CN210714765U - Fully-mechanized coal mining face crossheading fireproof system - Google Patents
Fully-mechanized coal mining face crossheading fireproof system Download PDFInfo
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- CN210714765U CN210714765U CN201921617055.1U CN201921617055U CN210714765U CN 210714765 U CN210714765 U CN 210714765U CN 201921617055 U CN201921617055 U CN 201921617055U CN 210714765 U CN210714765 U CN 210714765U
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Abstract
The utility model discloses a fully-mechanized mining face crossheading fire protection system, which comprises a fire door wall arranged in a roadway of the fully-mechanized mining face, wherein the roadway is positioned underground, and the fire door wall further comprises an action unit which is connected with the fire door wall and can control a switch of the fire door wall, a fire detection unit arranged in the roadway, an underground monitoring substation arranged underground and a monitoring central station arranged on the ground; the action unit and the fire detection unit are in communication connection with the underground monitoring substation, and the monitoring substation is in communication connection with the monitoring center station. The utility model discloses in, work as when the condition of a fire detecting element detects the condition of a fire and takes place, the monitoring center station sends the operating instruction who closes the fire door wall, action unit control the fire door wall is closed, has realized taking place the condition of a fire door wall self-closing, seals fast, can grasp best relief of disaster time, and does not need the operation personnel operation of going into the well, but the loss that the greatly reduced accident brought for the mine.
Description
Technical Field
The utility model relates to a mine fire prevention technical field especially relates to a combine and adopt face crossheading fire protection system.
Background
In recent years, the fully mechanized top coal caving technology is vigorously popularized and the application range is enhanced, so that the production efficiency of a coal mine is greatly improved, but the method has the advantages that the caving height is large, the residual coal quantity in a goaf is increased, the spontaneous combustion and ignition risk of mine coal is increased, and the fire prevention work of the fully mechanized top coal caving technology is more important.
Among the fire extinguishing measures, isolation fire extinguishing is a fire extinguishing method which is used under the condition that fire cannot be directly extinguished, a fire area is isolated and closed by a fire door wall, and fire extinguishing materials are injected into the isolated fire area to extinguish the fire. Therefore, the effectiveness of the insulation fire suppression must be ensured to prevent further spread of the fire zone.
The existing gate walls along the groove are constructed in advance with gate stacks, then spare gate walls are arranged nearby or at two sides of the gate stacks, when a fire accident happens and the tunnel needs to be closed, personnel need to enter the well for operation, the fire gate walls are installed or closed manually, personal safety of the operating personnel is seriously threatened, time is consumed, optimal disaster relief time is easily missed, and the accident is expanded.
In view of the above problems, it is desirable to provide a fully mechanized mining face crossheading fire protection system capable of automatically closing a fire door wall, so as to avoid workers going into a well, achieve a fast fire sealing area, and greatly reduce the loss of a mine caused by an accident.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a can realize the comprehensive face crossheading fire protection system that fire door wall self-closing.
The technical scheme of the utility model provides a combine and adopt face crossheading fire protection system, including setting up the fire door wall in the tunnel of combining the face, the tunnel is located in the pit, still include with the fire door wall connect and can control the action unit of fire door wall switch, set up the fire detection unit in the tunnel, set up in the underground monitoring substation in the pit and set up in the control central station on ground;
the input end of the action unit is in communication connection with the output end of the underground monitoring substation, the output end of the fire detection unit is in communication connection with the input end of the underground monitoring substation, and the underground monitoring substation is in communication connection with the monitoring center station.
Furthermore, the action unit comprises a fire door wall control host, an execution device and a trigger device, wherein the execution device and the trigger device are connected with the fire door wall;
the input end of the trigger device is in communication connection with the output end of the underground monitoring substation, the input end of the fire door wall control host is in communication connection with the output end of the trigger device, and the output end of the fire door wall control host is in communication connection with the input end of the execution device.
Preferably, the trigger device is an electrical breaker, the fire door wall control host is a programmable logic controller, and the execution device is an air cylinder.
Preferably, the fire detection unit includes a carbon monoxide detection device and a smoke detection device.
As an embodiment, the fully mechanized mining face gateway fire protection system further comprises an automation control platform in communication connection with the monitoring center station, and a grouting system performing grouting operation in communication connection with the automation control platform.
Further, the grouting system comprises a grouting control host, a grouting pipeline arranged in the roadway and provided with a grouting valve, and a grouting device for controlling the grouting valve to be opened or closed;
the input end of the grouting control host is in communication connection with the output end of the automatic control platform, and the output end of the grouting control host is in communication connection with the input end of the grouting device.
As an embodiment, the fully mechanized mining face gateway fire protection system further comprises an automatic control platform in communication connection with the monitoring center station, and a nitrogen injection system performing nitrogen injection operation in communication connection with the automatic control platform.
Further, the nitrogen injection system comprises a nitrogen injection control host, a nitrogen injection pipeline which is arranged in the roadway and is provided with a nitrogen injection valve, and a nitrogen injection device for controlling the nitrogen injection valve to be opened or closed;
the input end of the nitrogen injection control host is in communication connection with the output end of the automatic control platform, and the output end of the nitrogen injection control host is in communication connection with the input end of the nitrogen injection device.
As an implementation mode, the fully-mechanized mining face gateway fire protection system further comprises a polymer material injection control host, a polymer material injection pipeline arranged in the roadway and provided with a polymer material injection valve, and a polymer material injection device which is in communication connection with the polymer material injection control host and controls the polymer material injection valve to open or close.
In one embodiment, the fully mechanized mining face gateway fire protection system further comprises a backwater pipeline and/or an observation pipeline arranged in the roadway.
After adopting above-mentioned technical scheme, have following beneficial effect:
when the fire detection unit detects that a fire occurs, a fire occurrence signal is sent to the monitoring center through the underground monitoring substation, and the monitoring center sends an operation instruction for closing the fire door wall to control the action unit to close the fire door wall; the fire door wall can be automatically closed in case of fire, the sealing is quick, the best disaster relief time can be grasped, the operation of workers going into the well is not needed, and the loss of the mine caused by accidents can be greatly reduced.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
fig. 1 is a control schematic diagram of a fire door wall in a fully mechanized coal mining face gateway fire protection system in an embodiment of the present invention;
fig. 2 is a control schematic diagram of grouting in the fully mechanized mining face crossheading fire protection system in an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating the control of nitrogen injection in the fully mechanized mining face crossheading fire protection system according to an embodiment of the present invention;
fig. 4 is a schematic front view of a fire door wall according to an embodiment of the present invention;
fig. 5 is a schematic top view of a fire door wall according to an embodiment of the present invention.
Reference symbol comparison table:
fig. 1 to 3: the system comprises a monitoring central station 01, an underground monitoring substation 02, a fire detection unit 03, a carbon monoxide detection device 31, a smoke detection device 32, an action unit 04, a trigger device 41, a fireproof door wall control host 42, an execution device 43, an automatic control platform 05, a grouting system 06, a grouting control host 61, a grouting device 62, a nitrogen injection system 07, a nitrogen injection control host 71 and a nitrogen injection device 72;
fig. 4 to 5: the fire door comprises a fire door wall 101, a grouting pipeline 102, a nitrogen injection pipeline 103, a high polymer material injection pipeline 104, a reverse water valve 105, an observation valve 106, a grouting valve 63, a nitrogen injection valve 73 and a high polymer material injection valve 81.
Detailed Description
The following describes the present invention with reference to the accompanying drawings.
It is easily understood that, according to the technical solution of the present invention, a plurality of structural modes and implementation modes that can be mutually replaced by those of ordinary skill in the art can be achieved without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are only exemplary illustrations of the technical solutions of the present invention, and should not be construed as limiting or restricting the technical solutions of the present invention in its entirety or as a limitation of the present invention.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.
The fully-mechanized coal mining face gateway fireproof system in the embodiment comprises a fireproof door wall 101 arranged in a roadway of the fully-mechanized coal mining face, the roadway is located underground, and the fully-mechanized coal mining face gateway fireproof system further comprises an action unit 04 connected with the fireproof door wall 101 and capable of controlling the opening and closing of the fireproof door wall 101, a fire detection unit 03 arranged in the roadway, an underground monitoring substation 02 arranged underground and a monitoring central station 01 arranged on the ground;
the input end of the action unit 04 is in communication connection with the output end of the underground monitoring substation 02, the output end of the fire detection unit 03 is in communication connection with the input end of the underground monitoring substation 02, and the underground monitoring substation 02 is in communication connection with the monitoring center station 01;
when the fire detection unit 03 detects that a fire occurs, the monitoring center station 01 sends an operation instruction for closing the fire door wall 101, and the action unit 04 controls the fire door wall 101 to be closed.
Specifically, a plurality of fire door walls 101 as shown in fig. 4 are arranged in the gateway roadway of the fully mechanized coal mining face at intervals, and each fire door wall 101 is provided with two sides, so that when a fire occurs and the fire door walls 101 need to be closed, door panels (not shown) arranged on two sides of the fire door are pushed to close the fire door. If a closed area F is arranged between two adjacent fireproof door walls 101 in the gate roadway in the figure 5, when a fire occurs in the area A or the area B, the two fireproof door walls 101 are closed to separate the area A from the area B.
As shown in fig. 1, a fire detection device 03 for detecting whether a fire occurs is installed in a roadway, the fire detection device 03 is in communication connection with an underground monitoring substation 02, when the fire detection device 03 detects that a fire occurs, a fire signal is sent to the underground monitoring substation 02, data communication can be performed between the underground monitoring substation 02 and an underground monitoring central station 01, the underground monitoring substation 02 sends the fire signal to the monitoring central station 01, after receiving the fire signal, the monitoring central station 01 returns an operation instruction for closing a fire door wall to the underground monitoring substation 02, and the underground monitoring substation 02 sends the operation instruction for closing the fire door wall to an action unit 04, and the action unit 04 controls the fire door wall 101 to be closed.
Wherein, the condition of a fire detecting element 03 includes carbon monoxide detection device 31 and smog detection device 32, and for realizing the detection effect of preferred, carbon monoxide detection device 31 and smog detection device 32 generally set up in the return air crossheading, and the condition of a fire takes place for any position in the tunnel in the air-out department of return air crossheading in the fully mechanized face tunnel, and carbon monoxide and the smog of production all can flow to the return air crossheading along with the air current.
In this embodiment, the critical concentration of carbon monoxide and smoke is set to 500ppm, and when the concentration of carbon monoxide and smoke reaches 500ppm, the carbon monoxide detection device 31 and the smoke detection device 32 determine that a fire occurs and send a fire signal to the underground monitoring substation 02, and in the application of the fully mechanized mining face, the critical concentration can be calibrated according to the roadway condition.
Preferably, the underground monitoring substation 02 and the monitoring center station 01 can adopt an underground monitoring substation and a ground safety monitoring center station in the existing coal mine safety monitoring system, and data communication is realized between the underground monitoring substation and the ground safety monitoring center station through an industrial ethernet network, so that communication is performed by digital signals. The control of the fire door wall can be incorporated into the coal mine safety monitoring system by the arrangement, so that the integrity of the coal mine safety monitoring system is improved.
Further, the action unit 04 comprises a fire door wall control host 42, an execution device 43 connected with the fire door wall 101, and a trigger device 41; the input end of the trigger device 41 is in communication connection with the output end of the underground monitoring substation 02, the input end of the fire door wall control host 42 is in communication connection with the output end of the trigger device 41, and the output end of the fire door wall control host 42 is in communication connection with the input end of the execution device 43;
when the triggering device 41 receives the operation instruction of closing the fire door wall sent by the underground monitoring substation 02, the triggering device 41 triggers the fire door wall control host 42 to start the executing device 43 to close the fire door wall 101.
Specifically, the triggering device 41 is an electrical breaker, the fire door wall control host 42 is a Programmable Logic Controller (PLC), and the executing device 43 is an air cylinder. When the breaker receives the operation instruction for closing the fireproof door wall, the output point of the breaker is closed, the corresponding node on the PLC is closed, the cylinder control switch is started, the cylinder power supply is switched on to start acting, and the door plate is pushed to close the fireproof door wall.
The control system for the fire door wall in the fully-mechanized coal mining face crossheading fire protection system can quickly respond to close the fire door wall when a fire occurs in a roadway, so that a fire area is sealed, and the fire area is prevented from being diffused.
In a preferred embodiment, the fully-mechanized mining face gateway fire protection system further comprises an automatic control platform 05 in communication connection with the monitoring central station 01, and a grouting system which is in communication connection with the automatic control platform 05 and performs grouting operation;
when the monitoring center station 01 sends out the operation instruction for closing the fireproof door wall, the automatic control platform 05 sends out the grouting operation instruction or the grouting prompt to the grouting system 06.
When a fire occurs, after the fire door walls 101 are closed to seal and isolate a fire area, slurry needs to be injected into the closed area, the closed area F between the two fire door walls 101 is sealed, the effectiveness of isolation is guaranteed, and the fire is prevented from spreading. Therefore, the automatic control of the grouting system 06 is realized through the automatic control platform 05, and the automatic control platform 05 also adopts an automatic control platform in the existing safety detection monitoring system, specifically a control platform consisting of a server, an output device and an input device. The grouting system 06 and the automatic control platform 05 are communicated through an industrial Ethernet, and automatic grouting or manual grouting of the grouting system 06 can be controlled on the automatic control platform 05.
In the fully-mechanized mining face crossheading fire protection system, when a monitoring central station 01 sends an instruction for closing a fire door wall, if the grouting system 06 is set to automatic grouting at the moment, the automatic control platform 05 sends an operation instruction for grouting to the grouting system 06, and then the grouting system 06 starts automatic grouting; if the grouting system 06 is set to manual grouting at this time, the automatic control platform 05 sends out a grouting reminding signal, the grouting reminding signal is output through an output device of the automatic control platform 05, and the output device can adopt a display, an acousto-optic reminding device and the like.
The grouting system 06 comprises a grouting control host 61, a grouting pipeline 102 arranged in a roadway and provided with a grouting valve 63, and a grouting device 62 for controlling the opening or closing of the grouting valve 63;
the input end of the grouting control host 61 is in communication connection with the output end of the automatic control platform 05, and the output end of the grouting control host 61 is in communication connection with the input end of the grouting device 62;
the grouting control host 61 receives the operation instruction of automatic grouting, and the grouting device 62 controls the grouting valve 63 to open and start grouting.
As shown in fig. 5, a grouting pipeline 102 is installed in the roadway, wherein a slurry conveying pipe is arranged in the right roadway side and penetrates through the whole closed area F for conveying slurry, a slurry injection pipe is arranged in the left roadway side, and an injection port faces the inside of the closed area F for injecting slurry into the closed area F. A grouting valve 63 (see fig. 4), specifically an electromagnetic valve, is also provided on the grouting line 102.
The grouting operation instruction sent by the automation control platform 05 is received by the grouting control host 61 and then is transmitted to the grouting device 62, the grouting device 62 starts grouting after opening the grouting valve 63, and the grouting can be set to be stopped when the grouting is continued until the concentration of carbon monoxide and the concentration of smoke are reduced to 24 ppm. The grouting control host is a PLC control cabinet arranged in the grouting chamber, and the grouting device 62 is a liquid pump.
The above-mentioned for the slip casting control system among the face crossheading fire protection system of fully mechanized mining, after taking place the condition of a fire door wall self-closing, then start the slip casting control system, under automatic slip casting state, then automatic slip casting to closed area F, if under manual slip casting state, then send the slip casting and remind, whether slip casting is selected by the staff according to the fire district condition.
In a preferred embodiment, the fully mechanized mining face gateway fire protection system further comprises a nitrogen injection system 07, and the nitrogen injection system 07 is in communication connection with the automation control platform 05;
when the monitoring center station 01 sends out the operation instruction for closing the fire door wall, the automatic control platform 05 sends out the operation instruction for nitrogen injection or the nitrogen injection prompt to the nitrogen injection system 07.
After the fire area is closed, grouting is carried out in the closed area F, and meanwhile, non-combustible and non-combustion-supporting nitrogen is injected, so that fire spreading when the fire door wall is not closed is prevented. Similar to the grouting control system, the automatic control of the nitrogen injection system 07 is realized through the automatic control platform 05, and the automatic or manual nitrogen injection of the nitrogen injection system 07 can be controlled on the automatic control platform 05.
In the fully-mechanized coal mining face crossheading fire protection system, when the monitoring central station 01 sends out an instruction for closing a fire door wall, if automatic nitrogen injection is set in the nitrogen injection system 07 at the moment, the automatic control platform 05 sends out an operation instruction for nitrogen injection to the nitrogen injection system 07, and then the nitrogen injection system 07 starts automatic nitrogen injection; if the nitrogen injection system 07 is set to manually inject nitrogen, the automatic control platform 05 sends a nitrogen injection reminding signal, the nitrogen injection reminding signal is output through an output device of the automatic control platform 05, and the output device can adopt a display, an acousto-optic reminding device and the like.
The nitrogen injection system 07 comprises a nitrogen injection control host 71, a nitrogen injection pipeline 103 which is arranged in a roadway and is provided with a nitrogen injection valve 73, and a nitrogen injection device 72 for controlling the nitrogen injection valve 73 to be opened or closed;
the input end of the nitrogen injection control host 71 is in communication connection with the output end of the automatic control platform 05, and the output end of the nitrogen injection control host 71 is in communication connection with the input end of the nitrogen injection device 72;
the nitrogen injection control host 71 receives the operation instruction of nitrogen injection, and the nitrogen injection device 72 controls the nitrogen injection valve 73 to open and start nitrogen injection.
As shown in fig. 5, as in the grouting system 06, a nitrogen injection pipeline 103 is installed in the roadway, a nitrogen delivery pipe is installed in the right side roadway, a nitrogen injection pipe is installed in the left side roadway, and an injection port faces the inside of the closed area F and is used for injecting nitrogen into the closed area F. A nitrogen injection valve 73, specifically, an electromagnetic valve, is provided on the nitrogen injection pipeline 103.
The operation instruction of the nitrogen injection sent by the automation control platform 05 is received by the nitrogen injection control host 71 and then is transmitted to the nitrogen injection device 72, the nitrogen injection device 72 starts nitrogen injection after opening the nitrogen injection valve 73, and the nitrogen injection can be set to stop until the concentration of carbon monoxide and the concentration of smoke are reduced to 24 ppm. Wherein the nitrogen injection control host is a PLC control cabinet arranged in the nitrogen injection chamber, and the nitrogen injection device 73 is an air pump.
The nitrogen injection control system in the fully mechanized coal mining face crossheading fire protection system is started when the fire door wall is automatically closed. The nitrogen injection control system and the grouting control system are controlled in parallel, the start of the nitrogen injection control system and the start of the grouting control system are not in sequence, and nitrogen injection and grouting can be carried out simultaneously.
In a preferred embodiment, the fully-mechanized mining face gateway fire protection system further includes a polymer injection material control host, a polymer injection material pipeline 104 disposed in the roadway and provided with a polymer injection material valve 81, and a polymer injection material device communicatively connected to the polymer injection material control host and controlling the polymer injection material valve to open or close.
The high polymer material is a remedial measure for sealing the fireproof door wall, when the sealed area F between the two fireproof door walls 101 is subjected to grouting through the grouting system, the middle space of the fireproof door wall cannot be tightly filled, the high polymer material can be injected to seal the fireproof door wall tightly, and the sealing effect of the sealed area F is ensured.
As shown in fig. 5, like the grouting system 06 and the nitrogen injection system 07, a polymer material injection pipeline 104 is installed in the roadway, a polymer material delivery pipe is installed in the right lane side, a polymer material injection pipe is installed in the left lane side, the injection port faces the closed region F, and a polymer material injection valve 81, specifically, an electromagnetic valve is installed on the polymer material injection pipeline 104.
And injecting a high-molecular material as a remedial measure, wherein the closed area is basically closed when the device is started, and the closed condition of the closed area F needs to be investigated by workers, so that the device needs to be manually started by the workers. When the staff thinks need pour into the macromolecular material and further seal through the reconnaissance, then manual opening annotates the macromolecular material switch, annotates the macromolecular material control host computer input to control and annotate the operating command of macromolecular material and convey and annotate the macromolecular material device, annotate the macromolecular material device and open and annotate behind the macromolecular material valve 81 and begin to annotate the nitrogen.
Further, as shown in fig. 4, the fully-mechanized mining face gateway fire protection system further comprises a backwater pipeline (hidden in fig. 5 and not shown) and an observation pipeline (hidden in fig. 5 and not shown) which are arranged in the roadway, wherein a backwater valve 105 is arranged on the backwater pipeline, and an observation valve 106 is arranged on the observation pipeline. Wherein the counter-water conduit is used to drain excess water from the slurry injected into the enclosed area F. When grouting is not performed, the closed area F is not closed, the water return valve 105 is closed to prevent toxic gas in the closed area F from overflowing, and after grouting is completed, the water return valve 105 is opened to overflow. The observation pipeline is used for observing the gas condition in the closed area F, and when the observation pipeline is used for observing the gas condition in the closed area F, the observation valve 106 is manually opened, so that the gas condition in the closed area F can be observed.
In conclusion, the fully-mechanized mining face crossheading fire protection system in the embodiment is provided with the fire door wall control system, the grouting control system, the nitrogen injection control system and the polymer material injection system, so that the fire is detected, the fire door wall is automatically closed to isolate a fire area, the grouting and the nitrogen injection are automatically performed in the closed area F, the fire area is completely closed, measures can be taken at the best disaster relief time, the fire spread can be effectively avoided, and the loss caused by the fire accident is reduced to the maximum extent.
What has been described above is merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other modifications can be made, and the protection scope of the present invention should be considered.
Claims (10)
1. A fully-mechanized mining face crossheading fire protection system comprises a fire door wall arranged in a roadway of the fully-mechanized mining face, wherein the roadway is positioned underground, and the fully-mechanized mining face crossheading fire protection system is characterized by further comprising an action unit which is connected with the fire door wall and can control the fire door wall to open and close, a fire detection unit arranged in the roadway, an underground monitoring substation arranged underground and a monitoring central station arranged on the ground;
the input end of the action unit is in communication connection with the output end of the underground monitoring substation, the output end of the fire detection unit is in communication connection with the input end of the underground monitoring substation, and the underground monitoring substation is in communication connection with the monitoring center station.
2. The fully-mechanized coal mining face gateway fire protection system according to claim 1, wherein the action unit comprises a fire door wall control host, an execution device connected with the fire door wall and a trigger device;
the input end of the trigger device is in communication connection with the output end of the underground monitoring substation, the input end of the fire door wall control host is in communication connection with the output end of the trigger device, and the output end of the fire door wall control host is in communication connection with the input end of the execution device.
3. The fully-mechanized coal mining face gateway fire protection system according to claim 2, wherein the triggering device is an electrical breaker, the fire door wall control host is a programmable logic controller, and the execution device is a cylinder.
4. The fully mechanized coal mining face gateway fire protection system of claim 1, wherein the fire detection unit comprises a carbon monoxide detection device and a smoke detection device.
5. The fully-mechanized coal mining face gateway fire protection system according to claim 1, further comprising an automation control platform in communication with the monitoring central station, and a grouting system performing grouting operations in communication with the automation control platform.
6. The fully-mechanized mining face gateway fireproof system according to claim 5, wherein the grouting system comprises a grouting control host, a grouting pipeline arranged in a roadway and provided with a grouting valve, and a grouting device for controlling the grouting valve to open or close;
the input end of the grouting control host is in communication connection with the output end of the automatic control platform, and the output end of the grouting control host is in communication connection with the input end of the grouting device.
7. The gateway fire protection system according to claim 1, further comprising an automation control platform in communication with the monitoring central station, and a nitrogen injection system in communication with the automation control platform for performing a nitrogen injection operation.
8. The fully-mechanized mining face gateway fireproof system according to claim 7, wherein the nitrogen injection system comprises a nitrogen injection control host, a nitrogen injection pipeline arranged in a roadway and provided with a nitrogen injection valve, and a nitrogen injection device for controlling the nitrogen injection valve to be opened or closed;
the input end of the nitrogen injection control host is in communication connection with the output end of the automatic control platform, and the output end of the nitrogen injection control host is in communication connection with the input end of the nitrogen injection device.
9. The fully-mechanized coal mining face gateway fire protection system according to claim 1, further comprising a polymer material injection control host, a polymer material injection pipeline arranged in a roadway and provided with a polymer material injection valve, and a polymer material injection device in communication connection with the polymer material injection control host and controlling the polymer material injection valve to open or close.
10. The fully mechanized coal mining face gateway fire protection system of claim 1, further comprising a back water conduit, and/or an observation conduit disposed within the roadway.
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| CN201921617055.1U CN210714765U (en) | 2019-09-26 | 2019-09-26 | Fully-mechanized coal mining face crossheading fireproof system |
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| CN201921617055.1U CN210714765U (en) | 2019-09-26 | 2019-09-26 | Fully-mechanized coal mining face crossheading fireproof system |
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