CN203531950U - Fire preventing and extinguishing long-distance dynamic pressure grouting system for mine and monitoring device thereof - Google Patents
Fire preventing and extinguishing long-distance dynamic pressure grouting system for mine and monitoring device thereof Download PDFInfo
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- CN203531950U CN203531950U CN201320445504.5U CN201320445504U CN203531950U CN 203531950 U CN203531950 U CN 203531950U CN 201320445504 U CN201320445504 U CN 201320445504U CN 203531950 U CN203531950 U CN 203531950U
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Abstract
The utility model relates to a fire preventing and extinguishing long-distance dynamic pressure grouting system for a mine and the monitoring device thereof. The dynamic pressure grouting system comprises a pulping pool, slurry conveying pipes, a slurry pressure pump and a pollution discharge system, wherein the monitoring device comprises a controller, a flow sensor arranged in the slurry conveying pipe for detecting flow in a ground slurry conveying pipe, a ground pressure transmitter for detecting pressure of a ground slurry conveying pipe, and an underground pressure transmitter for detecting pressure of an underground slurry conveying pipe, and the controller is a PLC which comprises a detection terminal, a control terminal and an output terminal. The detection terminal acquires and transmits pipe pressure signals and flow signals to the control terminal of the PLC through the pressure transmitter and the flow sensor, and the control terminal generates control signals based on the pipe pressure signals and flow signals. The output terminal outputs control signals to the electric motor of the slurry pressure pump to control the motor and prevent damage on the slurry dynamic pressure grouting system due to the pressure of the slurry conveying pipes exceeding limit and non-uniform distribution of pressure.
Description
Technical field
The utility model relates to mine grouting preventing and extinguishing fire technology field, in particular to the remote dynamic pressure grouting system of the anti-fire extinguishing of a kind of mine and for the watch-dog of this dynamic pressure grouting system.
Background technology
In preventing and extinguishing fire of coal mine work, grouting technique has many successful application at home and abroad, through practice test, grouting technique is control mine coal spontaneous combustion one of effective measures the most, wherein, and after slurries flow to goaf, solid particulate matter precipitates down, be filled in the middle of float coal crack, form the isolation strip of effectively leaking out, thereby completely cut off, prevent that with contacting of air coal seam is oxidized; Increase the moisture in coal seam simultaneously, reach the development that suppresses oxidation of coal, thermolysis is played in the region of self-heating, the country rock in cooling goaf, reduces the coal petrography temperature in goaf; After slurries dehydration, can form a deposit, can effectively reduce the situation of leaking out in goaf.The temperature that grouting technique can effectively be controlled flame range reduces, and in general thick seam slicing system, can effectively prevent fires on the one hand, can form on the other hand good slurries top board, and the exploitation of lower leaf has been created to favourable condition.Therefore, this technology be one to the effectively anti-fire extinguishing means of mine coal spontaneous combustion.
In phase early 1990s, because industrial technology development is rapid, be applied on a large scale in industrial and mining enterprises, colliery Some Enterprises is applied the intensive production of high-yield and high-efficiency widely, and the mechanization degree in colliery is greatly improved, simultaneously, modern combine put coal-mining method range of application and constantly expands, the speed of its coal mining has also obtained day by day accelerating, but this has left a large amount of something lost coals to goaf, makes the problem of spontaneous combustion in goaf become more outstanding.General technological means and the various preventive measure that adopts prediction and forecast, although this has effectively reduced the fire probability that coal spontaneous combustion causes from the teeth outwards, in goaf, the coal spontaneous problem of getting angry still exists.How quick, the safe and effective goaf coal spontaneous combustion fire that puts out, makes it both can guarantee the safety in production of mine, can protect coal resources and ecological environment again, and this has very large social effect.
Due to current most of mines employings are longwall top coal cavings, so the scope of pit mining is constantly extended, China's coal-mine approximately with the speed of annual 10m left and right to downward-extension, caused the appearance of many new problems, wherein relatively concentrate distinct issues be mine slurries conveyance conduit to follow exploiting field along stretching continuous lengthening, cause the resistance of slurries conveyance conduit constantly to increase, the problems such as pipeline outlet pressure diminishes, the easy obstruction of pipeline become and become increasingly conspicuous.The conventional method addressing these problems is by utilizing the pressurizing tools such as force (forcing) pump to pressurize to improve the outlet pressure of pipeline at grouting station.Because pressure size in pipeline in grouting work belongs to uncontrollable factor, can not adjust in time it, and once excessive when pressure, may occur the situations such as conduit failure.The pipeline pressure monitor means of most mine are mainly to utilize manually to come it is measured, and therefore the pressure data of Real-Time Monitoring can not be provided; These factors cause existing grouting system can not meet well the requirement of colliery to safety.
Utility model content
The purpose of this utility model is to solve the grouting of preventing and extinguishing fire of coal mine grouting technique medium and long distance and the local pressure skewness that causes thus and the problem of the excessive damage slurries of the pressure conveyance conduit that causes, provide a kind of low cost, the remote slurries dynamic pressure of the anti-fire extinguishing of safe and reliable mine to carry watch-dog, thereby increasing under the prerequisite of the remote slurries transmitting power of mine, can monitor, the variation tendency of real time and on line monitoring mine dynamic pressure slurries conveyance conduit pressure especially, guarantee the anti-fire extinguishing grouting system of mine safety, reliability service.
The thinking that the utility model addresses the above problem is: the pressure limit threshold value of setting slurries conveyance conduit different monitoring points, utilize control technology, for example PLC control technology to realize: once loine pressure continues to transfinite and exceeds setting-up time, just make slurries force (forcing) pump quit work, and and alarm and the location pipeline region of transfiniting; In addition, for preventing pressure limit booster, open releasing pressure automatically system simultaneously and let out slurry, when loine pressure makes releasing pressure automatically system automatically closed during lower than default preset alarm threshold values, thereby guarantee reliable, the stable operation of the anti-fire extinguishing dynamic pressure of mine grouting system.
For solving above technical problem, the utility model proposes following technical scheme:
According to the watch-dog for the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) of the present utility model, described dynamic pressure grouting system (100) comprises slurrying pond (101), slurries conveyance conduit (102), slurries force (forcing) pump (103) and drainage (200), it is characterized in that, described watch-dog (300) comprises controller (310) and is arranged on the flow transmitter (320) for detection of ground slurries conveyance conduit flow in slurries conveyance conduit and for detection of the ground pressure transmitter (330) of surface grout injection station slurries conveyance conduit pressure and for detection of the down-hole pressure transmitter (340) of down-hole slurries conveyance conduit pressure, this controller (310) is designed to PLC controller, this PLC controller comprises test side, control end and output, wherein, in the control end that test side transfers to PLC by the pipeline pressure signal by pressure transmitter and flow transmitter collection and flow signal, control end produces control signal based on this pipeline pressure signal and flow signal, by output, this control signal is exported to the motor (M) of slurries force (forcing) pump (103), this motor (M) is controlled, in case grouting liquid conveyance conduit (102) pressure limit and pressure distribution inequality cause damage to slurries dynamic pressure grouting system (100).
According to a kind of expansion scheme of the present utility model, described watch-dog (300) also comprises for this slurries conveyance conduit (102) being carried out to self-relieving pipeline superpressure releasing pressure automatically system (500) when slurries conveyance conduit (102) superpressure.
According to a kind of expansion scheme of the present utility model, described slurries conveyance conduit (102) is connected with note nitrogen pipeline, utilizes valve to switch, and forms standby each other binary channel.
According to a kind of expansion scheme of the present utility model, described drainage (200) comprises holding wire, power line, dredge pump (203), blow-off line, pollution discharge pond and blowdown control cabinet, this blowdown control cabinet is controlled height of liquid level in pollution discharge pond, when liquid level surpasses setting high water level value, dredge pump is opened, by slurry reflux in slurrying pond (101).
According to a kind of expansion scheme of the present utility model, described dredge pump (203) has manual work pattern and automatic operation mode, wherein,
---in automatic operation mode, when pressing the automatic control button (SA) of sewage pump (203), the switching value that the control signal of dredge pump (203) transmits from floating-ball level switch (S): when the liquid level of dredge pump rises to high water level setting value, floating-ball level switch (S) closure, the first relay (KA
1) adhesive, and form auto-lock function, and drive contactor (KM) to obtain electric, dredge pump (203) is opened; When the liquid level of dredge pump (203) drops to low water stage setting value, the constant close contact in the major loop of blowdown control system (S1) disconnects, the first relay (KA
1) disconnect, contactor (KM) power-off, dredge pump (203) quits work;
---in manual work pattern, by the start button of sewage pump (203) (SB), the second relay (KA
2) adhesive, and form auto-lock function, and drive contactor (KM) to obtain electric, dredge pump (203) is opened; Press the stop button (SBS) of sewage pump (203), the constant close contact in the major loop of blowdown control system disconnects, the second relay (KA
2) disconnect, contactor (KM) power-off, dredge pump (203) quits work.
According to a kind of expansion scheme of the present utility model, described pipeline superpressure releasing pressure automatically system (500) comprises spring micro-open type safety valve (501), the ground slurries transfer pipeline of the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) is provided with ground pressure transmitter (330), down-hole slurries transfer pipeline is provided with down-hole pressure transmitter (340), when ground pressure transmitter (330) monitors surface grout injection station slurries transfer pipeline slurries pressure and reaches 0.8MPa, PLC controller (310) is controlled slurries force (forcing) pumps (103) and is quit work, spring micro-open type safety valve (501) is opened automatically simultaneously, the pressure limit situation occurring in slurries conveyance conduit (102) is carried out to pressure release, according to the blocking position of the pressure anomaly data judging down-hole slurries transfer pipeline of GPD60 type down-hole pressure transmitter (340) monitoring.
According to a kind of expansion scheme of the present utility model; described PLC controller can be realized the excessive overpressure protection function of damaging pipeline that causes of local pressure; wherein; pressure signal port (IIN0) and the flow signal port (IIN1) of PLC receive respectively the signal from ground pressure transmitter and electromagnetic flowmeter; after if pressure surpasses setting value lasting 50s; 02 port of PLC just sends control signal, makes the second relay (KA
2) closure, drive contactor to obtain electric, the constant close contact power-off in the major loop of PLC control system, quits work motor.
According to the remote dynamic pressure grouting system of the anti-fire extinguishing of mine of the present utility model (100), described dynamic pressure grouting system (100) comprises slurrying pond (101), slurries conveyance conduit (102), slurries force (forcing) pump (103) and drainage (200), it is characterized in that, described dynamic pressure grouting system also comprises watch-dog as above (300).
The watch-dog of the dynamic pressure grouting system that the utility model provides is simple in structure, easy to operate, security of operation, reliable and stable, without changing PLC switch board repeat circuit hardwired logic, flexibility is high, failure rate is low, and the device that system is used is all common devices, is convenient to maintenance in the future.In addition, the slurries of pressure relief opening are discharged in slurry pool by drainage is counter, on environment and not impact of personnel.
Accompanying drawing explanation
Fig. 1 is for pressing the structure composition frame chart of the signal of the remote dynamic pressure grouting system of the anti-fire extinguishing of mine of the present utility model;
Fig. 2 is for pressing the control logic figure of watch-dog of the present utility model;
Fig. 3 is for pressing the control logic figure of the pipeline superpressure releasing pressure automatically system of watch-dog of the present utility model;
Fig. 4 is for pressing the blowdown control chart of watch-dog of the present utility model;
Fig. 5 is for pressing the PLC control chart of watch-dog of the present utility model;
Fig. 6 is for pressing the PLC ladder diagram of watch-dog of the present utility model.
The specific embodiment
Fig. 1 illustrates by the structure composition frame chart of the signal of the remote dynamic pressure grouting system of the anti-fire extinguishing of mine of the present utility model.Fig. 2 illustrates the control logic figure by watch-dog of the present utility model.The remote dynamic pressure grouting system 100 of the anti-fire extinguishing of mine of the present utility model comprises slurrying pond 101, slurries conveyance conduit 102, slurries force (forcing) pump 103 and drainage 200, wherein, this dynamic pressure grouting system 100 also comprises watch-dog 300, this watch-dog comprises controller 310 and is arranged on the flow transmitter 320 for detection of ground slurries conveyance conduit flow in slurries conveyance conduit and for detection of the ground pressure transmitter 330 of ground slurries conveyance conduit pressure and for detection of the down-hole pressure transmitter 340 of down-hole slurries conveyance conduit pressure, this controller 310 is for base area surface pressure transmitter 330, pressure signal and flow signal that down-hole pressure transmitter 340 and flow transmitter 320 record are dynamically controlled the running status of slurries force (forcing) pump 103, in case grouting liquid conveyance conduit 102 pressure limits and pressure distribution inequality cause damage to slurries dynamic pressure grouting system 100.
In the present embodiment, slurrying pond 101 comprises flyash or loess slurries, and the slurries force (forcing) pump 103 of controlling for PLC controller provides slurries; Slurries conveyance conduit 102 for DN100mm(diameter be 4 inches) seamless steel pipe, coupling is mining snap joint.
The course of work of the remote slurries dynamic pressure of the anti-fire extinguishing of this mine grouting system is:
At mine grouting station, from Power Plant Ash storehouse dry ash floss hole, obtain flyash, adopt FU powder conveyer, rush grey mixer flyash is transported to slip casting factory building, in slurrying pond, add water and make centrotheca, by centrotheca precipitate, remaining water arranges and realizes mortar concentrated effect outward; In slip casting factory building, utilize the facilities such as stirring pool, movable mortar mixer, cement adding device, prepare qualified ash cement slurry; Adopt heavy grade gravity flow static pressure grouting, slurries conveyance conduit, the i.e. grouting standpipe of going into the well is connected by pipe-line system with note nitrogen standpipe, utilizes valve to switch, and forms standby each other binary channel-utilize pipeline to pour into gas (being mainly nitrogen), form inerting band, starvation; With valve, switch and to realize the note nitrogen of pipeline and the switching of grouting, i.e. same pipeline, can note respectively nitrogen and grouting-, can more effectively reduce underground goaf danger like this, the reliability of grouting system is improved.Slurries conveyance conduit is carried out to 10 minutes clear water of static pressure gravity flow, now utilize slurries deadweight to pour into completely; Then the fresh water pouring that stops static pressure gravity flow, utilizes valve switching device that static pressure grouting is switched to dynamic pressure injection mode, and the pressure that now dynamic pressure injection produces is the pressure superposition being produced by the outlet pressure of slurries force (forcing) pump and slurries deadweight; Finally change dynamic pressure fresh water pouring into 30 minutes, with flushing line, avoid slurries frozen plug pipeline.Utilize outlet pressure for 1.1MPa, bore for DN100mm(diameter be 4 inches) slurries force (forcing) pump (carry out slurries initial press, the slurries carrier pipe that lay at recycling slip casting station is transported to goaf by slurries.
Fig. 3 illustrates by the control logic figure of the pipeline superpressure releasing pressure automatically system 500 of watch-dog 300 of the present utility model.Pipeline superpressure releasing pressure automatically system 500 comprises spring micro-open type safety valve 501, the pressure relief opening design of pipeline superpressure releasing pressure automatically system 500 is above pollution discharge pond, prevent slurries contaminated environment-, when KGY50 type ground pressure transmitter 330 monitors slip casting station pipeline slurries pressure and reaches 0.8MPa, PLC controller 310 is controlled slurries force (forcing) pump 103 and is quit work, spring micro-open type safety valve 501 is opened automatically simultaneously, and the pressure limit phenomenon occurring in slurries conveyance conduit 102 is carried out to pressure release.Described pipeline superpressure releasing pressure automatically system is to occur rise sharply situation or when filling with pressure accumulation phenomena and occur with slurry place, when pressure relief opening force value reaches after 0.8MPa, safety valve is opened automatically, carries out the pressure release of pipeline initial stage of pressure according to down-hole pipeline.
Fig. 4 illustrates the blowdown control chart by watch-dog 300 of the present utility model.In the present embodiment not being shown specifically, drainage comprises holding wire, power line, dredge pump, blow-off line, pollution discharge pond and blowdown control cabinet, this blowdown control cabinet is controlled height of liquid level in pollution discharge pond, when liquid level surpasses setting high water level value, dredge pump is opened, by slurry reflux to slurrying pond.
As shown in Figure 4, this drainage can be carried out automatic/hand switching to dredge pump 103:
1) manual mode: press the start button SB of sewage pump, relay K A
2adhesive, and form auto-lock function, drive contactor KM to obtain electric, dredge pump is opened; Press the stop button SBS of sewage pump, the major loop of the constant close contact disconnection-blowdown control system in the major loop of blowdown control system is comprised of line breaker, A.C. contactor, realize the running of motor-, relay K A
2disconnect, contactor KM power-off, dredge pump quits work;
2) auto state: when pressing SA button, be auto state, the switching value that its signal transmits from floating-ball level switch S.When liquid level rises to high water level setting value, floating-ball level switch S is closed, relay K A
1adhesive, and form auto-lock function, drive contactor KM to obtain electric, dredge pump is opened; When liquid level drops to low water stage setting value, the constant close contact S1 in the major loop of blowdown control system disconnects, relay K A
1disconnect, contactor KM power-off, dredge pump quits work.
Fig. 5 and Fig. 6 illustrate respectively by the PLC control chart of watch-dog 300 of the present utility model and PLC ladder diagram.In this dynamic pressure grouting system, controller 310 is designed to PLC controller, this PLC controller comprises test side, control end and output, wherein, test side transfers to the pipeline pressure signal and the flow signal (4～20mA current signal) that by pressure transmitter and flow transmitter, gather in the control end of PLC; Control end produces control signal based on this pipeline pressure signal and flow signal according to the program of storage; By output, this control signal is exported to the motor M of slurries force (forcing) pump 103, to this motor, M controls, and reaches control effect.
As shown in Figure 5, close circuit breaker QF, system powers on, and the main disconnector in control loop is PLC, A.C. contactor and protection loop power supply.Press slurries force (forcing) pump start button, signal is delivered in PLC, and No. 02 port of PLC programme-control sends signal, relay K A
2adhesive, and drive contactor KM
2and KM
3must be electric, this process is called motor step-down (80%) start-up course, and the time is 12s.After 12s, No. 01 port in PLC sends signal, relay K A
1adhesive, now the contactor KM in the major loop of PLC control system
1electric, motor is mainly comprised of line breaker, A.C. contactor and self-coupling decompression transformer etc. with the major loop of full voltage starting running-PLC control system, by the realizations of three A.C. contactors, the rotation of motor is controlled, realize the running of motor-.Pressure signal port IIN0 and flow signal port IIN1 at PLC receive respectively the signal from KGY50 type ground pressure transmitter and electromagnetic flowmeter.If pressure surpasses setting value, and after lasting 50s, just 02 port of PLC sends signal, relay K A
2closure, drives contactor KM
3electric, the constant close contact KM in the major loop of PLC control system
3power-off, quits work motor.PLC controller is realized the excessive overpressure protection function of damaging pipeline that causes of local pressure.In Fig. 4, Fig. 5, FR represents drainage loop protection device, and FU represents the voltage measurement resistance of PLC control system, LD
1represent blowdown control device dredge pump start signal lamp, LD
2represent blowdown control device dredge pump shutdown signal lamp.
As shown in Figure 6, PLC when operation, by the automatic/hand method of operation of the switched system that arranges in tangible LCDs, switch, according to requirement of system design, be manually opened mode herein.In PLC arranges, I:0.01 represents the pressure input signal that PLC receives; Q:100.02 represents that PLC sends stop signal.P_on is the normal open sign in PLC, have after pressure signal input, directly by P_on port and comparator, carry out force value size relatively, if pressure input value is equal to or greater than, set maximum pressure value, signal equals EQ by P_EQ(and indicates) or P_GT(be greater than GT sign) pass in timer T018, now, timer is set as 50s, if force value is still large than setting value after 50s, timer sends signal and passes in Q:100.02, controls slurries force (forcing) pump and shuts down.The dynamic pressure grouting system device of hardware and software control combination can effectively be protected when loine pressure is gathered thus, has played the effect of pipeline explosion-proof, simultaneously for the safety of down-hole slurries conveyance conduit has played the initiatively effect of prevention.
According to a kind of unshowned embodiment, the watch-dog of the remote slurries dynamic pressure of the anti-fire extinguishing of this mine induction system can also comprise ipc monitor device, ipc monitor device comprises monitoring of software and Industrial Personal Computer (IPC), shows in real time the pressure distribution situation of monitoring slurries transfer pipeline by monitoring of software.This monitoring of software consists of data monitoring module, data analysis module, data management module and data outputting module, for the pressure of slurries conveyance conduit is carried out to Real-Time Monitoring and early warning, can show in real time omnidistance zoning plan and pressure curve thereof, there is overpressure alarm (setting maximum pressure/minimum pressure value), install the warning functions such as abnormal, can also show or history of printing curve by enquiry of historical data, there is TCP/IP access function etc., can realize the pressure of grouting pipeline is carried out to Real-Time Monitoring and early warning.
Claims (8)
1. for the watch-dog of the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100), described dynamic pressure grouting system (100) comprises slurrying pond (101), slurries conveyance conduit (102), slurries force (forcing) pump (103) and drainage (200), it is characterized in that, described watch-dog (300) comprises controller (310) and is arranged on the flow transmitter (320) for detection of ground slurries conveyance conduit flow in slurries conveyance conduit and for detection of the ground pressure transmitter (330) of surface grout injection station slurries conveyance conduit pressure and for detection of the down-hole pressure transmitter (340) of down-hole slurries conveyance conduit pressure, this controller (310) is designed to PLC controller, this PLC controller comprises test side, control end and output, wherein, in the control end that test side transfers to PLC by the pipeline pressure signal by pressure transmitter and flow transmitter collection and flow signal, control end produces control signal based on this pipeline pressure signal and flow signal, by output, this control signal is exported to the motor (M) of slurries force (forcing) pump (103), this motor (M) is controlled, in case grouting liquid conveyance conduit (102) pressure limit and pressure distribution inequality cause damage to slurries dynamic pressure grouting system (100).
2. the watch-dog for the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) as claimed in claim 1, it is characterized in that, described watch-dog (300) also comprises for this slurries conveyance conduit (102) being carried out to self-relieving pipeline superpressure releasing pressure automatically system (500) when slurries conveyance conduit (102) superpressure.
3. the watch-dog for the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) according to claim 1, is characterized in that: described slurries conveyance conduit (102) is connected with note nitrogen pipeline, utilizes valve to switch, and forms standby each other binary channel.
4. the watch-dog for the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) according to claim 1, it is characterized in that: described drainage (200) comprises holding wire, power line, dredge pump (203), blow-off line, pollution discharge pond and blowdown control cabinet, this blowdown control cabinet is controlled height of liquid level in pollution discharge pond, when liquid level surpasses setting high water level value, dredge pump is opened, by slurry reflux in slurrying pond (101).
5. the watch-dog for the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) according to claim 4, is characterized in that: described dredge pump (203) has manual work pattern and automatic operation mode, wherein,
---in automatic operation mode, when pressing the automatic control button (SA) of sewage pump (203), the switching value that the control signal of dredge pump (203) transmits from floating-ball level switch (S): when the liquid level of dredge pump rises to high water level setting value, floating-ball level switch (S) closure, the first relay (KA
1) adhesive, and form auto-lock function, and drive contactor (KM) to obtain electric, dredge pump (203) is opened; When the liquid level of dredge pump (203) drops to low water stage setting value, the constant close contact in the major loop of blowdown control system (S1) disconnects, the first relay (KA
1) disconnect, contactor (KM) power-off, dredge pump (203) quits work;
---in manual work pattern, by the start button of sewage pump (203) (SB), the second relay (KA
2) adhesive, and form auto-lock function, and drive contactor (KM) to obtain electric, dredge pump (203) is opened; Press the stop button (SBS) of sewage pump (203), the constant close contact in the major loop of blowdown control system disconnects, the second relay (KA
2) disconnect, contactor (KM) power-off, dredge pump (203) quits work.
6. the watch-dog for the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) according to claim 2, it is characterized in that: described pipeline superpressure releasing pressure automatically system (500) comprises spring micro-open type safety valve (501), the ground slurries transfer pipeline of the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) is provided with ground pressure transmitter (330), down-hole slurries transfer pipeline is provided with down-hole pressure transmitter (340), when ground pressure transmitter (330) monitors surface grout injection station slurries transfer pipeline slurries pressure and reaches 0.8MPa, PLC controller (310) is controlled slurries force (forcing) pumps (103) and is quit work, spring micro-open type safety valve (501) is opened automatically simultaneously, the pressure limit situation occurring in slurries conveyance conduit (102) is carried out to pressure release, according to the blocking position of the pressure anomaly data judging down-hole slurries transfer pipeline of GPD60 type down-hole pressure transmitter (340) monitoring.
7. the watch-dog for the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100) according to claim 1; it is characterized in that: described PLC controller can be realized the excessive overpressure protection function of damaging pipeline that causes of local pressure; wherein; pressure signal port (IIN0) and the flow signal port (IIN1) of PLC receive respectively the signal from ground pressure transmitter and electromagnetic flowmeter; after if pressure surpasses setting value lasting 50s; 02 port of PLC just sends control signal, makes the second relay (KA
2) closure, drive contactor to obtain electric, the constant close contact power-off in the major loop of PLC control system, quits work motor.
8. the remote dynamic pressure grouting system of the anti-fire extinguishing of mine (100), described dynamic pressure grouting system (100) comprises slurrying pond (101), slurries conveyance conduit (102), slurries force (forcing) pump (103) and drainage (200), it is characterized in that, described dynamic pressure grouting system also comprises the watch-dog (300) as described in one of claim 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320445504.5U CN203531950U (en) | 2013-07-24 | 2013-07-24 | Fire preventing and extinguishing long-distance dynamic pressure grouting system for mine and monitoring device thereof |
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| CN201320445504.5U CN203531950U (en) | 2013-07-24 | 2013-07-24 | Fire preventing and extinguishing long-distance dynamic pressure grouting system for mine and monitoring device thereof |
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| CN203531950U true CN203531950U (en) | 2014-04-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104033172A (en) * | 2014-06-26 | 2014-09-10 | 淮南矿业(集团)有限责任公司 | Automatic mortar spraying device |
| CN104120725A (en) * | 2014-06-17 | 2014-10-29 | 杭州华能大坝安全工程技术有限公司 | Automatic mortar conveying system applied to large hydropower station and construction method thereof |
| CN104806502A (en) * | 2015-05-18 | 2015-07-29 | 苏州美达斯机电有限公司 | Intelligent control circuit for water pump |
| CN105041374A (en) * | 2015-04-04 | 2015-11-11 | 西安科技大学 | Method for preventing and controlling gas and coal fire together in high-gas close-distance coal seam goaf |
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| CN109352829A (en) * | 2018-11-19 | 2019-02-19 | 大同煤矿集团有限责任公司 | A kind of mining grouting system and construction technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104120725A (en) * | 2014-06-17 | 2014-10-29 | 杭州华能大坝安全工程技术有限公司 | Automatic mortar conveying system applied to large hydropower station and construction method thereof |
| CN104120725B (en) * | 2014-06-17 | 2016-06-08 | 杭州华能大坝安全工程技术有限公司 | It is applied to automatic slurry transporting system and the constructional method thereof of large sized hydropower station |
| CN104033172A (en) * | 2014-06-26 | 2014-09-10 | 淮南矿业(集团)有限责任公司 | Automatic mortar spraying device |
| CN104033172B (en) * | 2014-06-26 | 2017-01-18 | 淮南矿业(集团)有限责任公司 | Automatic mortar spraying device |
| CN105041374A (en) * | 2015-04-04 | 2015-11-11 | 西安科技大学 | Method for preventing and controlling gas and coal fire together in high-gas close-distance coal seam goaf |
| CN104806502A (en) * | 2015-05-18 | 2015-07-29 | 苏州美达斯机电有限公司 | Intelligent control circuit for water pump |
| CN105676888A (en) * | 2016-04-15 | 2016-06-15 | 藤县顺舟造船有限公司 | Control box used for marine domestic sewage storage cabinet |
| CN108211758A (en) * | 2016-12-14 | 2018-06-29 | 浙江景创环保科技有限公司 | It is a kind of with pressure-detecting device and to carry out the spray tube of remote transmission monitoring |
| CN109352829A (en) * | 2018-11-19 | 2019-02-19 | 大同煤矿集团有限责任公司 | A kind of mining grouting system and construction technology |
| CN112627876A (en) * | 2020-12-17 | 2021-04-09 | 滨州学院 | Intelligent fire prevention and extinguishing integrated grouting device and method for coal mine |
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