CN109322689A - A pressure-flow function control valve group for an anti-shock hydraulic support - Google Patents
A pressure-flow function control valve group for an anti-shock hydraulic support Download PDFInfo
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- CN109322689A CN109322689A CN201811284750.0A CN201811284750A CN109322689A CN 109322689 A CN109322689 A CN 109322689A CN 201811284750 A CN201811284750 A CN 201811284750A CN 109322689 A CN109322689 A CN 109322689A
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- 230000000703 anti-shock Effects 0.000 title 1
- 238000012544 monitoring process Methods 0.000 claims abstract description 82
- 239000003245 coal Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 102
- 239000012530 fluid Substances 0.000 claims description 58
- 230000008676 import Effects 0.000 claims description 49
- 230000003628 erosive effect Effects 0.000 claims description 25
- 238000002347 injection Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 23
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 20
- 239000004917 carbon fiber Substances 0.000 claims description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 14
- 230000003750 conditioning effect Effects 0.000 claims description 8
- 230000005674 electromagnetic induction Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000000875 corresponding effect Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 18
- 238000010586 diagram Methods 0.000 description 8
- 230000035939 shock Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Fluid-Pressure Circuits (AREA)
- Safety Valves (AREA)
Abstract
本发明具体涉及一种防冲液压支架用压力流量函数控制阀组，属于煤矿安全领域。所述控制阀组包括压力流量函数控制阀座、流量监测部分、压力监测部分、快速启动小流量序列控制部分、慢速启动大流量序列控制部分、远程液压升降柱控制部分、远程连接胶管和堵孔螺丝。本发明集远程升降柱控制、小冲击准静态让位、大冲击动态让位和冲击监测预测多功能于一体实现支护防治冲击地压目的。
The invention particularly relates to a pressure-flow function control valve group for an anti-scour hydraulic support, which belongs to the field of coal mine safety. The control valve group includes a pressure flow function control valve seat, a flow monitoring part, a pressure monitoring part, a quick start small flow sequence control part, a slow start large flow sequence control part, a remote hydraulic lifting column control part, a remote connection hose and a plug. hole screw. The invention integrates the functions of remote lifting column control, small impact quasi-static yield, large impact dynamic yield and impact monitoring and prediction to achieve the purpose of supporting and preventing rock burst.
Description
Technical field
The invention belongs to field of coal mine safety, and in particular to a kind of erosion control hydraulic support pressure flow function control valve
Group.
Background technique
With the increase of China's demand for energy and continuing to increase for mining rate, cutting depth is deepened increasingly, and km is deep
Mine it is commonplace.Hydraulic support is since vertically and horizontally stability is good, supporting intensity is high, advancing velocity is fast, adapts to country rock for it
The features such as property is strong, is widely used in stope drift active workings.It is big that bump region crustal stress easily occurs for deep mining, roadway deformation speed
Degree is fast, it is desirable that hydraulic support is slowly stepped down when should meet the quasi-static deformation in tunnel, guarantee poppet pressure can in tolerance range,
Meet bracket when bump causes tunnel Quasi dynamic to deform again quickly to step down, reduces shock loading to the pressure of bracket
Power, it is ensured that strut pressure can be within tolerance range at it.
Hydraulic support stand should adapt to following three kinds of situations, the first situation is that roof pressure is larger, the lower settling velocity of top plate
Degree is very slow (0.005 to 0.05mm/min), slow, the column piston of the column plunger shaft pressure buildup in passive driving phase
Cavity pressure through a long time is slowly increased, and is finally reached its yield load, is more than after yield load, safety valve will be slow
It opens, is at the constant-resistance stage, prevent hydraulic prop overload failure, this state is to embody the small flow of safety valve and open to overflow to close spy
The state of property.Second situation occurs in the production process zone of influence, fast speed of crushing (60-80mm/min), and column is living
It fills in cavity pressure to increase comparatively fast, is more than yield load, safety valve is opened, and since speed of crushing is fast, safety valve will occur
More frequently interruption is opened, and embodies the constant-resistance of bracket.The third situation in top plate quickly to press when, top plate sinking speed can
Up to 200-500mm/s, bump is bigger, and even more than several times.In this case, the pressure of bracket upright post plunger shaft may
Increase several times.For the hydraulic support that current tunnel uses, the thump dynamic loading that is generated due to bump usually beyond
The strength range of hydraulic support, the starting speed of the common safety valve of hydraulic support, draining flow it is limited and with surrouding rock deformation not
To coordinate, hydraulic support cannot step down in time, and cause hydraulic support pressure in the short time to exceed the range that hydraulic support can be born,
Cause column to bend, press the breakoff phenomenons such as thick, explosion and fracture, so that the several hundred framves destructions of hydraulic support, several hundred meters of tunnels collapse,
It seriously threatens the safety of personnel and slows down manufacturing schedule.
Therefore, the supporting characteristic of bracket depends primarily on country rock impact characteristics and bracket resigning characteristic, is embodied in branch
Frame control valve uninterrupted opens the overflow state for closing characteristic and the coordination with deformation characteristics of rocks.It can be seen that hydraulic support exists
Slow start big flow control valve sequence composition difference is reconfigured on the basis of configuration quick start control valve for small flows sequence to open
Dynamic overflow function and surrouding rock deformation coordination are the effective ways for solving the problems, such as country rock impact failure.Under rheological behavior of surrounding rocks deformation,
The constant-resistance characteristic of hydraulic support is realized by control valve for small flows.When fierce impact occurs for country rock, hydraulic support characteristic by
Control valve for small flows sequence and big flow control valve sequence fit reach the unlatching overflow closing property required under shock loading,
The highly pressurised liquid in column plunger shaft is discharged rapidly, makes the impact subsidence velocity of contracting velocity adaptive country rock under bracket, to keep away
Exempt from hydraulic support to be destroyed because of impact acceleration.
It is nursed according to bump country rock shock characteristic, long time scientific practice summary and bump country rock disturbance response branch
By guidance, now need it is a kind of allow bit function and dynamic quickly to allow the equipment of bit function at a slow speed with static state, specifically:
(1) the impact stress variation of bump generating process, it is desirable that there is the variable impact coordinated with country rock to open for supporting
Dynamic resigning stress；
(2) the impact change in displacement of bump generating process, it is desirable that there is the variable impact coordinated with country rock to open for supporting
The dynamic Bit Shift that allows；
(shock stiffness of 3 bump generating processes changes, it is desirable that supporting has the variable impacting start coordinated with country rock
Resigning rigidity；
(4) the impact velocity variation of bump generating process, it is desirable that there is the variable impact coordinated with country rock to open for supporting
The dynamic bit rate that allows；
(5) the impact energy variation of bump generating process, it is desirable that there is the variable impact coordinated with country rock to open for supporting
Dynamic resigning energy；
(6) the frequency of impact variation of bump generating process, it is desirable that there is the variable impact coordinated with country rock to open for supporting
The dynamic bit frequency that allows.
Summary of the invention
For the above technical problems, the present invention provides a kind of erosion control hydraulic support pressure flow function control valve
Group, comprising: pressure flow function control valve seat, flow monitoring part, pressure monitoring part, the small flow sequence control of quick start
Partially, slow start big flow sequence control section, Remote Hydraulic lifting column control section, long-range connection rubber tube and plug-hole spiral shell
Silk；
Wherein, pressure flow function control valve seat is connect with erosion control hydraulic support pillar interface, and respectively with flow monitoring
Partially, pressure monitoring part, quick start small flow sequence control section, slow start big flow sequence control section and long-range
One end of connection rubber tube connects；The other end of the long-range connection rubber tube is connect with Remote Hydraulic lifting column control section；
Monitoring network is accessed in the flow monitoring part and pressure monitoring part；
Remote Hydraulic lifting column control section is connect with liquid-injection equipment.
The pressure flow function control valve seat, by highly pressurised liquid import, flow monitoring part of interface, pressure monitoring part
Interface, quick start small flow sequence control section interface, slow start big flow sequence control section interface, Remote Hydraulic liter
Interface composition in column control section drops；
The highly pressurised liquid import accesses erosion control hydraulic support pillar interface；Idle pressure flow function control valve seat
Interface is blocked with plug-hole screw tightening.
The flow monitoring part, by fluid flow monitoring partial shell, fluid flow electromagnetic induction head, fluid flow electricity
Press conditioning circuit, flow monitoring plug composition；
The flow monitoring part of interface of the fluid flow electromagnetic induction head cut-in pressure flow function control valve seat；
The flow monitoring plug accesses monitoring network.
The pressure monitoring part, by fluid pressure monitoring partial shell, highly pressurised liquid import, the sensitive member of fluid pressure
Part, fluid pressure voltage conditioning circuit, pressure monitoring plug composition；
The pressure monitoring part of interface of the highly pressurised liquid import cut-in pressure flow function control valve seat；
The pressure monitoring plug accesses monitoring network.
Quick start small flow sequence control section, by low flow rate liquid overflow control valve shell, highly pressurised liquid into
Mouth, superpressure safety protecting box, drain overflow hole, spherical thimble, carbon fiber guide way, spring, carbon fiber spring base, scale hand
Handle, fluid hole, body cap composition；
The highly pressurised liquid import of quick start small flow sequence control section and the small flow sequence of quick start control
Part of interface connection.
The slow start big flow sequence control section, by big flow liquid flooding control valve chest, highly pressurised liquid into
Mouth, carbon fiber sliding block, damping overflow hole, big flow liquid outlet, spring, drain overflow hole, spherical thimble, carbon fiber guiding to
Body, spring, carbon fiber spring base, chasing lever, drain fluid hole, body cap composition；
The highly pressurised liquid import of the slow start big flow sequence control section and slow start big flow sequence control
Part of interface connection.
Remote Hydraulic lifting column control section by the hydraulic commutation control valve chest of lifting column, highly pressurised liquid import, turns
Dynamic circle block, intake chute, tower spring, spherical thimble, protection spring, body cap, chasing lever, high pressure leakage fluid dram, high pressure
Liquid injection port composition；
The high pressure liquid injection port is connect with liquid-injection equipment.
The long-range connection rubber tube, is made of highly pressurised liquid import, screw, high-pressure hose, nut；
Remote Hydraulic lifting column control section interface connects the highly pressurised liquid import of long-range connection rubber tube and tightens spiral shell
Silk connects the highly pressurised liquid import of Remote Hydraulic lifting column control section by high-pressure hose by nut.
A kind of control method of erosion control hydraulic support pressure flow function control valve group, using the above-mentioned hydraulic branch of erosion control
Frame pressure flow function control valve group, comprising the following steps:
Step 1, control valve is set according to field condition:
The chasing lever of quick start small flow sequence control section is transferred to respective threshold according to pressure design；It will at a slow speed
The chasing lever of starting big flow sequence control section is transferred to respective threshold according to pressure design；The threshold value is according to different coal mines
It is required that setting；
Step 2, in use process, control valve carries out corresponding actions according to field condition:
(1) under the conditions of static load, when pillar, which is slowly deformed load by top plate, is more than safe pressure, the liquid of hydraulic support pillar
Body enters flow function control valve seat by highly pressurised liquid import, is realized by flow monitoring part and pressure monitoring part to liquid
The monitoring of flow and pressure；
Enter quick start small flow sequence control section by quick start small flow sequence control section interface liquids,
The spherical thimble of respective threshold is pushed, liquid is flowed out from fluid hole, reduces fluid pressure in pillar cylinder；
When small flow sequence control section pressure is higher than pre-pressure, quick start small flow sequence control section
Superpressure safety protecting box pressure-rupturable to being depressured；
(2) when bump occurs, the ball of pushed at high pressure liquid slow start big flow sequence control section respective threshold
Shape thimble, liquid are flowed out from big flow liquid outlet, realize big flow quickly resigning energy-absorbing release, consume impact energy, protect liquid
Press pillar from impact failure；
By the cooperation of small flow sequence control section and big flow sequence control section, reach the pressure under different condition
Function requirements, so that fluid pressure is no more than pillar permission pressure in hydraulic prop cylinder, protection hydraulic prop is from destroying；
(3) when lifting column danger, by remotely controlling lifting column, the following contents is specifically included:
Long-range setting prop control process: chasing lever gets to fluid injection state, and the highly pressurised liquid for controlling liquid-injection equipment passes through high pressure
Liquid injection port enters the hydraulic commutation control part of lifting column, flows into hydraulic prop by highly pressurised liquid import, pillar rises；
Long-range drop column control process: chasing lever gets to tapping state, and intake chute rotates to top and high pressure leakage fluid dram connects
Logical, the liquid in control valve flows out release from high pressure leakage fluid dram by highly pressurised liquid import, and pillar unloads pressure drop column.
Beneficial effects of the present invention:
The present invention proposes a kind of erosion control hydraulic support pressure flow function applied to bump in deep part roadway support
Control valve group realizes lifting column process using long-range fluid injection, tapping control；Difference is combined into using small pressure control valve for small flows
Starting pressure threshold sequence is realized steps down under the conditions of small impact is quasi-static；Big pressure big flow control is utilized under large impact dynamic condition
Valve group processed synthesizes steps down under different starting pressure threshold sequences realization large impact dynamic conditions；Utilize pressure, flow monitoring part
It realizes and impact ground pressure monitoring and control efficiency is examined.Collect long-range lifting column control, the quasi-static resigning of small impact, large impact dynamic
Resigning and Impact monitoring prediction are multi-functional in integrally realization supporting prevention and treatment bump purpose.
The present invention has rational design, it is easy to accomplish, there is good practical value.
Detailed description of the invention
Fig. 1 is the structure of erosion control hydraulic support pressure flow function control valve group described in the specific embodiment of the invention
Schematic diagram；
Fig. 2 is the structural schematic diagram of pressure flow function control valve seat described in the specific embodiment of the invention；
Fig. 3 is the structural schematic diagram of flow monitoring part described in the specific embodiment of the invention；
Fig. 4 is the structural schematic diagram of pressure monitoring part described in the specific embodiment of the invention；
Fig. 5 is the structural schematic diagram of quick start small flow sequence control section described in the specific embodiment of the invention；
Fig. 6 is the structural schematic diagram of slow start big flow sequence control section described in the specific embodiment of the invention；
Fig. 7 is the structural schematic diagram of Remote Hydraulic lifting column control section described in the specific embodiment of the invention；
Fig. 8 is the structural schematic diagram of long-range connection rubber tube described in the specific embodiment of the invention.
In figure: 1, pressure flow function control valve seat；2, flow monitoring part；3, pressure monitoring part；4, quick start
Small flow sequence control section；5, slow start big flow sequence control section；6, Remote Hydraulic lifting column control section；7, remote
Journey connection rubber tube；8, plug-hole screw；11, highly pressurised liquid import；12, flow monitoring part；13, pressure monitoring part；14, quickly
Start small flow sequence control section；15, slow start big flow sequence control section；16, Remote Hydraulic lifting column control unit
Point；21, fluid flow monitors partial shell；22, fluid flow electromagnetic induction head；23, fluid flow voltage conditioning circuit；24,
Flow monitoring plug；31, fluid pressure monitors partial shell；32, highly pressurised liquid import；33, fluid pressure sensing element；34,
Fluid pressure voltage conditioning circuit；35, pressure monitoring plug；41, low flow rate liquid overflow control valve shell；42, highly pressurised liquid
Import；43, superpressure safety protecting box；44, drain overflow hole；45, spherical thimble；46, carbon fiber guide way；47, spring；48,
Carbon fiber spring base；49, chasing lever；410, fluid hole；411, body cap；51, big flow liquid flooding controls valve chest；
52, highly pressurised liquid import；53, carbon fiber sliding block；54, overflow hole is damped；55, big flow liquid outlet；56, spring；57, it leads
Hydrorrhea discharge orifice；58, spherical thimble；59, carbon fiber guide way；510, spring；511, carbon fiber spring base；512, chasing lever；
513, drain fluid hole；514, body cap；61, the hydraulic commutation control valve chest of lifting column；62, highly pressurised liquid import；63, it rotates
Round block；64, intake chute；65, tower spring；66, spherical thimble；67, spring is protected；68, body cap；69, chasing lever；
610, high pressure leakage fluid dram；611, high pressure liquid injection port；71, highly pressurised liquid import；72, screw；73, high-pressure hose；74, nut.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing and embodiment,
Further description is made to the present invention.It should be appreciated that described herein, specific examples are only used to explain the present invention, and
It is not used in the restriction present invention.
The present invention proposes a kind of erosion control hydraulic support pressure flow function applied to bump in deep part roadway support
Control valve group, as shown in Figure 1, include pressure flow function control valve seat 1, flow monitoring part 2, pressure monitoring part 3, quickly
Start small flow sequence control section 4, slow start big flow sequence control section 5, Remote Hydraulic lifting column control section 6,
Long-range connection rubber tube 7 and plug-hole screw；
Wherein, pressure flow function control valve seat 1 is connect with erosion control hydraulic support pillar interface, and respectively with flow monitoring
Part 2, pressure monitoring part 3, quick start small flow sequence control section 4,5 and of slow start big flow sequence control section
One end connection of long-range connection rubber tube 7；The other end of the long-range connection rubber tube 7 and Remote Hydraulic lifting column control section 6 connect
It connects；
Monitoring network is accessed in the flow monitoring part 2 and pressure monitoring part 3；
Remote Hydraulic lifting column control section 6 is connect with liquid-injection equipment.
The pressure flow function control valve seat 1 is as shown in Fig. 2, by highly pressurised liquid import 11, flow monitoring part of interface
12, pressure monitoring part of interface 13, quick start small flow sequence control section interface 14, the control of slow start big flow sequence
Part of interface 15, Remote Hydraulic lifting column control section interface 16 form；
The highly pressurised liquid import 11 accesses erosion control hydraulic support pillar interface；
The flow monitoring part 2 is as shown in figure 3, monitor partial shell 21, fluid flow electromagnetic induction by fluid flow
First 22, fluid flow voltage conditioning circuit 23, flow monitoring plug 24 form；
The flow monitoring part of interface of the 22 cut-in pressure flow function control valve seat 1 of fluid flow electromagnetic induction head
12；
The flow monitoring plug 24 accesses monitoring network；
The pressure monitoring part 3 is as shown in figure 4, monitor partial shell 31, highly pressurised liquid import 32, liquid by fluid pressure
Body pressure-sensing device 33, fluid pressure voltage conditioning circuit 34, pressure monitoring plug 35 form；
The pressure monitoring part of interface 13 of the 32 cut-in pressure flow function control valve seat 1 of highly pressurised liquid import；
The pressure monitoring plug 35 accesses monitoring network；
Quick start small flow sequence control section 4 is as shown in figure 5, by low flow rate liquid overflow control valve shell
41, highly pressurised liquid import 42, superpressure safety protecting box 43, drain overflow hole 44, spherical thimble 45, carbon fiber guide way 46, bullet
Spring 47, carbon fiber spring base 48, chasing lever 49, fluid hole 410, body cap 411 form；
The highly pressurised liquid import 42 and the small flow sequence control of quick start of quick start small flow sequence control section 4
Part of interface 14 processed connects；
The slow start big flow sequence control section 5 is as shown in fig. 6, control valve chest by big flow liquid flooding
51, highly pressurised liquid import 52, carbon fiber sliding block 53, damping overflow hole 54, big flow liquid outlet 55, spring 56, drain overflow
Discharge orifice 57, spherical thimble 58, carbon fiber guide way 59, spring 510, carbon fiber spring base 511, chasing lever 512, drain go out liquid
Hole 513, body cap 514 form；
The highly pressurised liquid import 52 and the sequence control of slow start big flow of the slow start big flow sequence control section 5
Part of interface 15 processed connects；
Remote Hydraulic lifting column control section 6 is as shown in fig. 7, by the hydraulic commutation control valve chest 61 of lifting column, height
Press liquid import 62 rotates round block 63, intake chute 64, tower spring 65, spherical thimble 66, protection spring 67, body cap
68, chasing lever 69, high pressure leakage fluid dram 610, high pressure liquid injection port 611 form；
The high pressure liquid injection port 611 is connect with liquid-injection equipment；
The long-range connection rubber tube 7 is as shown in figure 8, by highly pressurised liquid import 71, screw 72, high-pressure hose 73, nut 74
Composition；
Remote Hydraulic lifting column control section interface 16 connects the highly pressurised liquid import 71 of long-range connection rubber tube 7 and twists
Tight screw 72 connects the highly pressurised liquid import 62 of Remote Hydraulic lifting column control section 6 by high-pressure hose 73 by nut 74；
The interface of idle pressure flow function control valve seat 1 is blocked with plug-hole screw tightening；
The present invention proposes a kind of control method of erosion control hydraulic support pressure flow function control valve group, using above-mentioned anti-
Rush hydraulic support pressure flow function control valve group, comprising the following steps:
Step 1, control valve is set according to field condition:
The chasing lever 49 of quick start small flow sequence control section 4 is transferred to respective threshold according to pressure design；It will
The chasing lever 512 of slow start big flow sequence control section 5 is transferred to respective threshold according to pressure design；The threshold value according to
Different coal mines require setting；
Step 2, in use process, control valve carries out corresponding actions according to field condition:
(1) under the conditions of static load, when pillar, which is slowly deformed load by top plate, is more than safe pressure, the liquid of hydraulic support pillar
Body enters flow function control valve seat 1 by highly pressurised liquid import 11, is realized by flow monitoring part 2 and pressure monitoring part 3
Monitoring to fluid flow and pressure；
Enter the small flow sequence control unit of quick start by 14 liquid of quick start small flow sequence control section interface
Divide 4, push the spherical thimble 45 of respective threshold, liquid is flowed out from fluid hole 410, reduces fluid pressure in pillar cylinder；
When 4 pressure of small flow sequence control section is higher than pre-pressure, the small flow sequence control unit of quick start
Divide 4 43 pressure-rupturable of superpressure safety protecting box to be depressured；
(2) when bump occurs, the ball of 5 respective threshold of pushed at high pressure liquid slow start big flow sequence control section
Shape thimble 58, liquid are flowed out from big flow liquid outlet 55, realize big flow quickly resigning energy-absorbing release, consume impact energy, are protected
Hydraulic prop is protected from impact failure；
By the cooperation of small flow sequence control section 4 and big flow sequence control section 5, reach the pressure under different condition
Force function requirement, so that fluid pressure is no more than pillar permission pressure in hydraulic prop cylinder, protection hydraulic prop is from destroying；
(3) when lifting column danger, by remotely controlling lifting column, the following contents is specifically included:
Long-range setting prop control process: chasing lever 69 gets to fluid injection state, and the highly pressurised liquid for controlling liquid-injection equipment passes through height
It presses liquid injection port 611 to enter the hydraulic commutation control part 6 of lifting column, hydraulic prop, pillar liter is flowed by highly pressurised liquid import 62
It rises；
Long-range drop column control process: chasing lever 69 gets to tapping state, and intake chute 64 rotates to top and high pressure drain
Mouth 610 is connected to, and the liquid in control valve flows out release from high pressure leakage fluid dram 610 by highly pressurised liquid import 62, and pillar unloads pressure drop
Column.
Claims (9)
1. a kind of erosion control hydraulic support pressure flow function control valve group characterized by comprising the control of pressure flow function
Valve seat, flow monitoring part, pressure monitoring part, quick start small flow sequence control section, slow start big flow sequence
Control section, Remote Hydraulic lifting column control section, long-range connection rubber tube and plug-hole screw；
Wherein, pressure flow function control valve seat is connect with erosion control hydraulic support pillar interface, and respectively with flow monitoring part,
Pressure monitoring part, quick start small flow sequence control section, slow start big flow sequence control section and long-range connection
One end of sebific duct connects；The other end of the long-range connection rubber tube is connect with Remote Hydraulic lifting column control section；
Monitoring network is accessed in the flow monitoring part and pressure monitoring part；
Remote Hydraulic lifting column control section is connect with liquid-injection equipment.
2. erosion control hydraulic support pressure flow function control valve group according to claim 1, which is characterized in that the pressure
Force flow flow function control valve seat, by highly pressurised liquid import, flow monitoring part of interface, pressure monitoring part of interface, quick start
Small flow sequence control section interface, slow start big flow sequence control section interface, Remote Hydraulic lifting column control section
Interface composition；
The highly pressurised liquid import accesses erosion control hydraulic support pillar interface；The interface of idle pressure flow function control valve seat
It is blocked with plug-hole screw tightening.
3. erosion control hydraulic support pressure flow function control valve group according to claim 1, which is characterized in that the stream
Amount monitoring part, by fluid flow monitoring partial shell, fluid flow electromagnetic induction head, fluid flow voltage conditioning circuit, stream
Amount monitoring plug composition；
The flow monitoring part of interface of the fluid flow electromagnetic induction head cut-in pressure flow function control valve seat；
The flow monitoring plug accesses monitoring network.
4. erosion control hydraulic support pressure flow function control valve group according to claim 1, which is characterized in that the pressure
Power monitors part, monitors partial shell, highly pressurised liquid import, fluid pressure sensing element, fluid pressure voltage by fluid pressure
Conditioning circuit, pressure monitoring plug composition；
The pressure monitoring part of interface of the highly pressurised liquid import cut-in pressure flow function control valve seat；
The pressure monitoring plug accesses monitoring network.
5. erosion control hydraulic support pressure flow function control valve group according to claim 2, which is characterized in that described fast
Speed starting small flow sequence control section, by low flow rate liquid overflow control valve shell, highly pressurised liquid import, superpressure safeguard protection
Box, drain overflow hole, spherical thimble, carbon fiber guide way, spring, carbon fiber spring base, chasing lever, fluid hole, body cap
Composition；
The highly pressurised liquid import of quick start small flow sequence control section and quick start small flow sequence control section
Interface connection.
6. erosion control hydraulic support pressure flow function control valve group according to claim 5, which is characterized in that described slow
Speed starting big flow sequence control section, controls valve chest, highly pressurised liquid import, carbon fiber sliding shoe by big flow liquid flooding
Body, damping overflow hole, big flow liquid outlet, spring, drain overflow hole, spherical thimble, carbon fiber guide way, spring, carbon fiber
Spring base, chasing lever, drain fluid hole, body cap composition；
The highly pressurised liquid import of the slow start big flow sequence control section and slow start big flow sequence control section
Interface connection.
7. erosion control hydraulic support pressure flow function control valve group according to claim 6, which is characterized in that described remote
Journey hydraulic lifting post control section by the hydraulic commutation control valve chest of lifting column, highly pressurised liquid import, the round block of rotation, is led
Liquid bath, tower spring, spherical thimble, protection spring, body cap, chasing lever, high pressure leakage fluid dram, high pressure liquid injection port composition；
The high pressure liquid injection port is connect with liquid-injection equipment.
8. erosion control hydraulic support pressure flow function control valve group according to claim 1, which is characterized in that described remote
Journey connection rubber tube is made of highly pressurised liquid import, screw, high-pressure hose, nut；
Remote Hydraulic lifting column control section interface connects the highly pressurised liquid import of long-range connection rubber tube and tightens screw warp
Cross the highly pressurised liquid import that high-pressure hose connects Remote Hydraulic lifting column control section by nut.
9. a kind of control method of erosion control hydraulic support pressure flow function control valve group, which is characterized in that wanted using right
Erosion control hydraulic support pressure flow function control valve group described in asking 7, comprising the following steps:
Step 1, control valve is set according to field condition:
The chasing lever of quick start small flow sequence control section is transferred to respective threshold according to pressure design；By slow start
The chasing lever of big flow sequence control section is transferred to respective threshold according to pressure design；The threshold value is required according to different coal mines
Setting；
Step 2, in use process, control valve carries out corresponding actions according to field condition:
(1) under the conditions of static load, when pillar, which is slowly deformed load by top plate, is more than safe pressure, the liquid of hydraulic support pillar is logical
It crosses highly pressurised liquid import and enters flow function control valve seat, realized by flow monitoring part and pressure monitoring part to fluid flow
With the monitoring of pressure；
Enter quick start small flow sequence control section by quick start small flow sequence control section interface liquids, pushes
The spherical thimble of respective threshold, liquid are flowed out from fluid hole, reduce fluid pressure in pillar cylinder；
When small flow sequence control section pressure is higher than pre-pressure, quick start small flow sequence control section surpasses
Pressure safety protecting box pressure-rupturable is to be depressured；
(2) when bump occurs, the dome of pushed at high pressure liquid slow start big flow sequence control section respective threshold
Needle, liquid are flowed out from big flow liquid outlet, realize big flow quickly resigning energy-absorbing release, are consumed impact energy, are protected hydraulic branch
Column is from impact failure；
By the cooperation of small flow sequence control section and big flow sequence control section, reach the pressure function under different condition
It is required that protection hydraulic prop is from destroying so that fluid pressure is no more than pillar permission pressure in hydraulic prop cylinder；
(3) when lifting column danger, by remotely controlling lifting column, the following contents is specifically included:
Long-range setting prop control process: chasing lever gets to fluid injection state, and the highly pressurised liquid for controlling liquid-injection equipment passes through high pressure fluid injection
Mouth enters the hydraulic commutation control part of lifting column, passes through highly pressurised liquid import and flows into hydraulic prop, pillar rises；
Long-range drop column control process: chasing lever gets to tapping state, and intake chute rotates to top and is connected to high pressure leakage fluid dram, control
Liquid in valve processed flows out release from high pressure leakage fluid dram by highly pressurised liquid import, and pillar unloads pressure drop column.
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| DE2337390A1 (en) * | 1972-07-22 | 1974-02-07 | Dowty Mining Equipment Ltd | PIT SUPPORT FRAME |
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| CN202731962U (en) * | 2012-07-16 | 2013-02-13 | 兖州煤业股份有限公司 | Adjacent control system for hydraulic support |
| CN203189050U (en) * | 2013-01-31 | 2013-09-11 | 山东鲁捷机械有限公司 | Mining large flow hydraulic control one-way valve |
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| CN105569696A (en) * | 2016-03-04 | 2016-05-11 | 辽宁工程技术大学 | Extra-large flow high-pressure erosion-control pressure control valve for hydraulic support |
| CN107345485A (en) * | 2017-07-25 | 2017-11-14 | 山东科技大学 | Hydraulic support pilot operated safety valve |
| CN108708759A (en) * | 2018-05-18 | 2018-10-26 | 辽宁大学 | A kind of repeatable energy-absorbing tunnel erosion control hydraulic support and its anti-punching method |
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2018
- 2018-10-31 CN CN201811284750.0A patent/CN109322689B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2337390A1 (en) * | 1972-07-22 | 1974-02-07 | Dowty Mining Equipment Ltd | PIT SUPPORT FRAME |
| CN101899986A (en) * | 2010-07-30 | 2010-12-01 | 北京天地玛珂电液控制系统有限公司 | A hydraulically controlled one-way valve |
| CN202731962U (en) * | 2012-07-16 | 2013-02-13 | 兖州煤业股份有限公司 | Adjacent control system for hydraulic support |
| CN203189050U (en) * | 2013-01-31 | 2013-09-11 | 山东鲁捷机械有限公司 | Mining large flow hydraulic control one-way valve |
| CN103410537A (en) * | 2013-08-20 | 2013-11-27 | 深圳市神拓机电设备有限公司 | Safety valve |
| CN104216370A (en) * | 2013-12-05 | 2014-12-17 | 煤科集团沈阳研究院有限公司 | Remote monitoring and control system and monitoring method for underground hydraulic permeability increase operation on coal mine |
| CN105569696A (en) * | 2016-03-04 | 2016-05-11 | 辽宁工程技术大学 | Extra-large flow high-pressure erosion-control pressure control valve for hydraulic support |
| CN107345485A (en) * | 2017-07-25 | 2017-11-14 | 山东科技大学 | Hydraulic support pilot operated safety valve |
| CN108708759A (en) * | 2018-05-18 | 2018-10-26 | 辽宁大学 | A kind of repeatable energy-absorbing tunnel erosion control hydraulic support and its anti-punching method |
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| CN109322689B (en) | 2024-06-25 |
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