CN113153413B - Automatic spraying wave-absorbing system for wind tunnel wind guiding tunnel of coal mine - Google Patents
Automatic spraying wave-absorbing system for wind tunnel wind guiding tunnel of coal mine Download PDFInfo
- Publication number
- CN113153413B CN113153413B CN202110475015.3A CN202110475015A CN113153413B CN 113153413 B CN113153413 B CN 113153413B CN 202110475015 A CN202110475015 A CN 202110475015A CN 113153413 B CN113153413 B CN 113153413B
- Authority
- CN
- China
- Prior art keywords
- air
- water
- wind
- valve
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005507 spraying Methods 0.000 title claims abstract description 30
- 239000003245 coal Substances 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 153
- 238000002347 injection Methods 0.000 claims abstract description 32
- 239000007924 injection Substances 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 15
- 230000000670 limiting effect Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 7
- 230000002708 enhancing effect Effects 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims description 2
- 238000003379 elimination reaction Methods 0.000 claims description 2
- 238000004880 explosion Methods 0.000 description 38
- 230000035939 shock Effects 0.000 description 21
- 239000007789 gas Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 238000005192 partition Methods 0.000 description 9
- 238000009423 ventilation Methods 0.000 description 7
- 239000011324 bead Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/02—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
- E21F5/04—Spraying barriers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/14—Fluid barriers or rock dusters made to work by, or at the same time as, shots or explosions
- E21F5/143—Fluid barriers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Special Spraying Apparatus (AREA)
Abstract
The invention discloses an automatic spraying wave-absorbing system for a wind-guiding chamber of a coal mine air shaft, which comprises an air cannon, a water feeding pump, a spraying tank, a cannon pump connecting pipe, a water feeding pipe, a water injection pipe, an inflation pipe, an electromagnetic valve, a trigger switch and an uninterrupted power supply.
Description
Technical Field
The invention relates to the technical field of coal mine safety, in particular to an automatic spraying wave-absorbing system of a coal mine air shaft air guide chamber, which is used for reducing explosion impact suffered by a coal mine ground main ventilator.
Background
The main ventilation fan on the ground of the coal mine is used for conveying fresh air underground and exhausting toxic and harmful gases, and the continuous, safe and reliable operation of the main ventilation fan is related to the safety of the whole mine. In order to protect the main ventilator from the damage of the down-hole explosion shock wave, the main ventilator should be generally arranged in a branch roadway called a wind tunnel of a wind shaft wellhead, and an explosion door for explosion venting is arranged at the wind shaft wellhead. The explosion-proof principle of this arrangement is: when explosion occurs underground, explosion shock waves blow out the explosion door, and explosion energy is mainly discharged to the atmosphere through a wellhead, so that a main ventilator positioned at the tail end of the wind guiding chamber is prevented from damaging impact. However, when the explosion power is great, such as a coal dust explosion, the relatively weak shock waves entering the wind tunnel are also sufficient to cause damaging impacts to the main ventilator.
In order to further protect the safety of the main ventilator, a technical proposal of arranging an explosion-proof gate in the air guiding chamber is proposed so as to put down the explosion-proof gate before the explosion shock wave arrives, seal the air guiding chamber and isolate the main ventilator out of the explosion shock range. However, this assumption is technically difficult to achieve and presents new problems. The explosion-proof gate is necessarily large in mass, and is difficult to realize quick closing after detecting an explosion signal. The explosion-proof gate is supposed to be capable of being pre-closed, but when the explosion-proof gate is subjected to explosion impact, the explosion-proof gate can be deformed and damaged to be difficult to open again, and rescue works such as ventilation and the like can be quickly restored after mine disaster are seriously delayed. Whether to find a safety protection technical measure which can act rapidly and does not influence the rescue work after mine disaster or not is still further innovated.
Disclosure of Invention
The invention aims to solve the problem of unhealthy safety protection technical measures of a main ventilation fan of a coal mine, and provides an automatic spraying wave-absorbing system for a wind guiding chamber of a coal mine wind shaft and a use method thereof.
In order to achieve the above purpose, the invention is implemented according to the following technical scheme:
an automatic spraying wave elimination system for a wind tunnel wind-guiding cave of a coal mine comprises an air cannon, a water supply pump, a spray box, a cannon pump connecting pipe, a water supply pipe, a water injection pipe, an air charging pipe, a water charging valve, an air charging valve, an electromagnetic valve, a trigger switch and an uninterrupted power supply, wherein the air cannon and the water supply pump are arranged on the ground near a wind tunnel wellhead;
further, the spray box comprises a box body, a supporting plate, a middle partition plate, a cover plate, overflow valves and spray holes, wherein the box body is of a non-cover cuboid metal shell-shaped structure, at least one water supply hole is formed in the side surface of the box body, the supporting plate is a metal plate provided with the water supply holes, the plurality of supporting plates are uniformly welded in the box body and used for enhancing the compression resistance of the box body, the middle partition plate is a metal plate provided with the plurality of overflow holes, the plurality of overflow holes are uniformly distributed, the overflow valves are arranged in the overflow holes, the middle partition plate is tightly attached to the upper edge of the supporting plate and welded in the box body, the box body is divided into an upper layer and a lower layer, the cover plate is fixed on the upper part of the box body through screws, and the spray Kong Buman cover plate is used for enhancing the compression resistance of the box body;
further, the overflow valve consists of a rubber valve plug and an elastic strip, and is arranged in the overflow hole in a rivet or bonding mode;
further, the trigger switch comprises a shell, a fixed contact, a moving contact, a pressure-bearing film, a compression ring, a limiting block and a binding post, wherein the shell is an insulator, and the fixed contact, the limiting block and the binding post are all fixed at the bottom of the shell through screws;
furthermore, the fixed contact and the binding post are respectively provided with two groups, each group is connected with a cable, the movable contact is adhered to the pressure-bearing film, the whole movable contact is arranged at the upper part of the shell through a compression ring, and the compression ring is fixed on the shell through screws;
furthermore, the spray header is of a metal bent pipe structure, one end of the spray header is provided with external threads, and the spray header is installed in the spray hole in a threaded connection mode;
further, the gun pump connecting pipe is a metal pipe, and two ends of the gun pump connecting pipe are respectively connected with the water supply pump and the air gun through flange plates;
further, a water injection valve is arranged on the water supply pipe, and an inflation valve is arranged on the inflation pipe;
furthermore, the water filling valve and the electromagnetic valve are both stop valves, and the charging valve is a one-way stop valve.
The technical principle of the auxiliary explosion door provided by the invention is as follows:
(1) Normal operating conditions. The air cannon is inflated to the working pressure, the water pump is filled with water to the maximum water storage capacity, and the water supply pipe and the lower layer of the spray box are filled with water; the water filling valve is arranged in a close state, a small amount of water can be fed, and if the system has a small amount of water leakage, the water can be timely supplemented. Because the water pressure is smaller, the overflow valve in the spray box does not act, and the water at the lower layer of the spray box cannot enter the upper layer to leak. The trigger switch is in a normally open state.
(2) And (5) an explosion working condition. When explosion happens underground, when explosion shock waves pass through the installation position of the trigger switch, the trigger switch is pressed, the electromagnetic valve working circuit is conducted, the electromagnetic valve acts, air is sprayed and exploded, the air flow of the sprayed and exploded air enters the water supply pump air cavity, the piston is pushed to extrude water in the water cavity, the bottom water pressure of a spray box communicated with the water supply pump rises in multiple, the overflow valve on the middle partition plate is opened, high-pressure water enters the upper layer of the spray box and is sprayed outwards through the spray header, and a water curtain section is formed in the air guide chamber. When the explosion shock wave enters the water curtain section, the explosion shock wave interacts with the water bead particles in the water curtain, a considerable part of heat and kinetic energy are transferred to the water bead particles, and the shock wave strength is weakened. After the impact wave interacts with the water curtain, the impact wave continuously propagates along the wind guiding chamber with a large amount of water droplet particles, and in the interaction process with the wall surface of the wind guiding chamber, a considerable part of water droplet particles moving at high speed are adhered to the wall surface, so that the energy of the explosion airflow is attenuated again, and the impact wave finally reaching the main ventilator is obviously weakened.
(3) Resetting after disaster. After the air cannon is sprayed and exploded, the air cannon can be automatically inflated to the rated spraying and explosion pressure. The high-pressure gas in the air cavity of the water supply pump can be gradually released into the atmosphere from the exhaust hole, so that the air pressure in the air cavity is gradually restored to normal pressure. Opening a water injection valve to inject water into the water cavity of the water feed pump, pushing the piston body to move towards the air cavity by water injection pressure, and placing the water injection valve at a close closing position after reaching the maximum water injection position. If the trigger switch and the circuit are not damaged, the system can be restored to the normal state.
The invention has the following advantages and beneficial effects:
the invention can detect the explosion shock wave in advance, automatically form a spray water curtain in the wind-guiding chamber, effectively absorb and dissipate the energy of the explosion shock wave through the interaction of the explosion shock wave and the airflow after the explosion shock wave and the water drop particles in the water curtain, and realize the attenuation of the explosion shock wave, thereby enhancing the protection of the main ventilator.
The installation and the use have no obvious influence on normal ventilation and post-disaster recovery ventilation of the mine, and various problems and hidden dangers possibly generated by the explosion-proof gate are avoided. The structures such as the spray box, the water supply pipe and the like are embedded in the wall surface of the wind tunnel, and only the spray header is exposed, so that the induced ventilation resistance is negligible. The water drops reaching the main ventilator are fully atomized and cannot harm the main ventilator.
After the primary spraying wave-absorbing operation is completed, the invention can quickly recover to the normal working condition. When continuous explosion accidents are encountered, the wave-absorbing effect can be exerted for many times.
The invention has the advantages of low construction cost and less daily maintenance and overhaul work.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of the feed pump of the present invention;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
FIG. 4 is a top view of the spray box of the present invention;
FIG. 5 is a cross-sectional view of B-B of FIG. 4;
FIG. 6 is a cross-sectional view of C-C of FIG. 4;
FIG. 7 is a perspective view of the trigger switch of the present invention;
FIG. 8 is a cross-sectional view of D-D of FIG. 7;
FIG. 9 is a schematic view of the mounting arrangement of the present invention;
FIG. 10 is a schematic circuit diagram of the trigger switch of the present invention;
in the figure, 1-air cannon, 2-water feeding pump, 3-spray tank, 4-cannon pump connecting pipe, 5-water feeding pipe, 6-water injection pipe, 8-air charging pipe, 7-water injection valve, 9-air charging valve, 10-solenoid valve, 11-trigger switch, 12-uninterrupted power source, 13-cable, 14-air shaft, 15-air guiding chamber, 16-explosion door, 201-flange plate, 202-piston body, 203-limiting ring, 204-water injection hole, 205-exhaust hole, 206-water cavity, 207-air cavity, 208-support, 301-box body, 302-support plate, 303-middle partition plate, 304-cover plate, 305-overflow valve, 3051-rubber valve plug, 3052-elastic strip, 306-spray head, 111-shell body, 112-static contact, 113-moving contact, 114-pressure-bearing rubber sheet, 115-compression ring, 116-limiting block and 117-binding post.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments, wherein the exemplary embodiments and descriptions of the invention are for purposes of illustration, but are not intended to be limiting.
The automatic spraying wave-absorbing system for the wind tunnel of the coal mine is shown in figures 1-10, is installed in the wind tunnel, and referring to figure 1, comprises an air cannon 1, a water supply pump 2, a spray box 3, a cannon pump connecting pipe 4, a water supply pipe 5, a water injection pipe 6, an inflation pipe 8, a water injection valve 7, an inflation valve 9, an electromagnetic valve 10, a trigger switch 11 and an uninterruptible power supply 12, wherein the air cannon 1 and the water supply pump 2 are installed on the ground near the wellhead of the wind tunnel 14, the trigger switch 11 is arranged in the middle lower part or a return air main tunnel of a shaft 12 of the wind tunnel, the spray box 3 is installed in an underground wind tunnel 15, the ground and the underground parts are connected through the water supply pipe 5, the air cannon 1 is an industrial blocking remover, the water supply pump 2 is pushed to work by utilizing the explosion airflow formed by suddenly releasing compressed air, one end of the water supply pump 2 is connected with the output end of the air cannon 1 through the cannon connecting piece 4, and the other end is connected with the spray box 3 through the water supply pipe 5.
Referring to fig. 2 and 3, in this embodiment, the main body of the water feeding pump 2 is a circular pipe structure, the inside of the water feeding pump 2 is provided with a piston body 202 and a limiting ring 203, the piston body 202 divides the inside of the water feeding pump 2 into a water cavity 206 and a gas cavity 207, the limiting rings 203 are two and are both fixed on the inner wall of the water feeding pump 2 and are used for limiting the movement position of the piston body 203, the piston body 202 moves between the two groups of limiting rings 203 to correspondingly change the volumes of the water cavity 206 and the gas cavity 207, the wall surface of the water feeding pump body is provided with a water injection hole 204 and a gas exhaust hole 205 which are communicated with the main body, the water injection hole 204 is communicated with the water cavity 206 and is used for supplying water into the water cavity 206, the gas exhaust hole 205 is communicated with the gas cavity 207 and is used for releasing the air in the gas cavity 207, the bottom of the water feeding pump 2 is provided with a plurality of supports 208 for mounting and fixing, the top of spray box 3 is provided with a plurality of shower heads 306, the one end of water injection pipe 6 is installed in water injection hole 204 of feed pump 2, the other end termination running water pipe, air cannon 1 is connected to the one end of gas tube 8, the other termination compressed air source, solenoid valve 10 is installed on air cannon 1, trigger switch 11 arranges in the well shaft's well lower part or return air main road so that can advance the discovery explosion shock wave, trigger switch 11 can establish two sets or multiunit, install at a certain distance, each is drawn forth to ground through independent circuit, connect solenoid valve 10 and uninterrupted power source 12 after the parallel connection, arbitrary one set of trigger switch 11 action can make the circuit switch on, trigger solenoid valve 10 action, uninterrupted power source 12 is general product, by the electric wire netting power supply for guarantee system continuous stable power supply, the cable is mining illumination cable.
Referring to fig. 4-6, in this embodiment, the spray box 3 includes a box 301, a support plate 302, an intermediate partition 303, a cover plate 304, overflow valves 305, and spray holes 310, where multiple groups of spray boxes 3 may be installed in the wind tunnel 15 at certain intervals, the box 3 is a non-covered rectangular metal shell structure, at least one water supply hole 307 is provided on a side surface of the box 3, the support plate 302 is a metal plate with water holes, the multiple support plates 302 are uniformly welded in the box 301 for enhancing the pressure resistance of the box 301, the intermediate partition 303 is a metal plate with multiple overflow holes 308, the multiple overflow holes 308 are uniformly distributed, the overflow valves 305 are installed in the overflow holes 308, the intermediate partition 303 is tightly attached to the support plate 302 and welded in the box 1, and divides the box 3 into an upper layer and a lower layer, the upper layer only stores water when spraying, the cover plate 304 is fixed on the upper portion of the box 301 by screws, and the spray holes 310 are fully distributed with the cover plate 304;
in this embodiment, the overflow valve 305 is composed of a rubber valve plug 3051 and an elastic strip 3052, and is installed in the overflow hole 308 by means of rivet or bonding; the spray header 306 is of a metal bent pipe structure, one end of the spray header 306 is provided with external threads, and the external threads are installed in the spray holes 310 in a threaded connection mode; the spray range can be set by adjusting the orientation of the shower head 306. When the system executes spraying action, the water pressure of the lower layer of the spraying box 3 rises in multiple times, the overflow valve 305 is opened, and high-pressure water enters the upper layer space and is sprayed outwards through the spraying head 306. The jet of water should be directed against the blast shock wave. The jet water flow and the reflection flow which meets the wall surface jointly form the wave-absorbing water curtain.
Referring to fig. 7 and 8, in this embodiment, the trigger switch 11 includes a housing 111, a fixed contact 112, a moving contact 113, a pressure-bearing film 114, a compression ring 115, a limiting block 116, and a binding post 117, where the housing 111 is an insulator, and the fixed contact 112, the limiting block 116, and the binding post 117 are all fixed at the bottom of the housing 111 by mounting screws; the fixed contact 112 and the binding post 117 are respectively provided with two groups, each group is connected with a cable, the movable contact is adhered to the pressure-bearing film 114, the whole movable contact is arranged at the upper part of the shell 111 through the compression ring 115, and the compression ring 115 is fixed on the shell 111 through screws; when the pressure-bearing rubber 114 is pressed by external shock waves, the movable contact 113 is driven to move towards the bottom of the shell, and after the pressure-bearing rubber contacts with the two groups of fixed contacts 112 are contacted, a circuit is conducted, the electromagnetic valve 10 acts, and the spraying system is triggered to act. The limiting block 116 is a hard insulator and is used for preventing the static contact from being crushed. The cable 13 is a mining illumination cable.
In this embodiment, the cannon pump connecting pipe 4 is a metal pipe, and two ends of the cannon pump connecting pipe 4 are respectively connected with the water supply pump 2 and the air cannon 1 through a flange 201;
in the embodiment, a water filling valve 7 is arranged on the water supply pipe 5, and an air filling valve 9 is arranged on the air filling pipe 8; the water injection valve 7 and the electromagnetic valve 10 are both stop valves, the air charging valve 9 is a one-way stop valve, the air charging valve 9 has a one-way reverse stop function besides a switching function, so that the air cannon 1 is prevented from returning to the outside when an air source fails, and the electromagnetic valve 10 is an electric detonating device of the air cannon 1 and is arranged on the air cannon 1. The solenoid valve 10 is powered on and the air cannon with compressed air begins to spray.
The installation and construction method of the embodiment comprises the following steps:
according to the sizes of the spray box 3 and the water supply pipe 5, holes and grooves required by installation are excavated in the bottom plate at one end of the wind tunnel 15 close to the wind tunnel shaft 14, and drilling holes leading to the ground are constructed at corresponding positions. The spray box 3 and the water supply pipe 5 are installed, so that the wall surface of the wind-guiding chamber 15 is not exposed except the spray header 306, the ground anchor is used for fixing firmly, and the installation gap is filled with cement slurry. The water supply pump 2 and the air cannon 1 are connected in sequence and fixed by a ground anchor. Is connected with a water injection pipe 6, a water injection valve 7, an air charging pipe 8 and an air charging valve 9. A solenoid valve 10 is mounted on the air cannon 1. A trigger switch 11 is installed underground and connected with a solenoid valve 10 and an uninterruptible power supply 12 to form a circuit. The water injection valve 7 is opened to inject water into the system, and after the spray tank 3, the water supply pipe 5 and the water supply pump 2 are filled with water, the water injection valve 7 is adjusted to be close to the closed position, and water injection is stopped. The inflation valve 9 is opened to inflate the air cannon 1 to the rated working pressure of the air cannon 1. The trigger switch 11 is manually pressed downhole to perform a simulation test on the system. And after passing the test, placing the system in a normal working state. The ground part of the system can take necessary measures to prevent rain, contact by idle people, and the like.
The technical principle of the automatic spraying wave-absorbing system provided by the invention is as follows:
under normal working conditions, the air cannon 1 is inflated to working pressure, the water pump 2 is filled with water to the maximum water storage capacity, and the water supply pipe 5 and the lower layer of the spray tank 3 are filled with water; the water filling valve 7 is arranged in a close state, a small amount of water can be fed, and if the system has a small amount of water leakage, the water can be timely supplemented. Because the water pressure is smaller, the overflow valve in the spray box 3 does not act, and water at the lower layer of the spray box 3 cannot enter the upper layer to leak. The air charging valve 9 is in a normally open state, and can be out of air at any time after the pressure of the air cannon 1 is reduced. The solenoid valve 10 is in a normally closed state. The trigger switch 11 is in a normally open state.
When explosion happens underground, when explosion shock waves pass through the installation position of the trigger switch 11, the working circuit of the trigger switch 11 is pressed, the electromagnetic valve 10 is conducted, the electromagnetic valve 10 acts, the air cannon 1 is exploded, the explosion airflow enters the air cavity 207 of the water supply pump 2, the piston is pushed to extrude water in the water cavity 206, the water pressure at the bottom layer of the spray box 3 communicated with the water supply pump 2 rises in multiple times, the overflow valve 305 on the middle partition plate 303 is opened, high-pressure water enters the upper layer of the spray box 3 and is sprayed outwards through the spray header 306, and a water curtain section is formed in the air guide chamber 15; when the explosion shock wave enters the water curtain section, the explosion shock wave interacts with the water bead particles in the water curtain, a considerable part of heat and kinetic energy are transferred to the water bead particles, and the shock wave strength is weakened. After the impact wave interacts with the water curtain, the impact wave continuously propagates along the wind guiding chamber 15 with a large amount of water droplet particles, and in the process of interacting with the wall surface of the wind guiding chamber 15, a considerable part of water droplet particles moving at high speed are adhered to the wall surface, so that the energy of the explosion airflow is attenuated again, and the impact wave finally reaching the main ventilator is obviously weakened.
After explosion, the air cannon 1 can automatically inflate to rated pressure, high-pressure air in the air cavity 207 of the water feeding pump 2 can be gradually released into the atmosphere from the exhaust hole 205, so that the air pressure in the air cavity 207 is gradually restored to normal pressure, the water injection valve 7 is opened to inject water into the water cavity 206 of the water feeding pump 2, the water injection pressure pushes the piston body to move towards the air cavity 207, and when the maximum water injection position is reached, the water injection valve 7 is placed at a close position. If the trigger switch 11 and the line 13 are not damaged, the system can be restored to the normal state.
The technical scheme of the invention is not limited to the specific embodiment, and all technical modifications made according to the technical scheme of the invention fall within the protection scope of the invention.
Claims (9)
1. The utility model provides an automatic spray wave elimination system for colliery air shaft wind-guiding cave, a serial communication port, including air cannon, feed pump, spray tank, big gun pump connecting pipe, feed pipe, water injection pipe, gas tube, water injection valve, inflation valve, solenoid valve, trigger switch, uninterrupted power source, air cannon and feed pump are installed subaerial near the air shaft well head, trigger switch arranges in the well lower part of air shaft or the return air main road, spray tank installs in the wind-guiding cave in underground, the one end of feed pump passes through the big gun pump connecting piece and links to each other with the output of air cannon, the other end is connected with the spray tank through the feed pipe, the main part of feed pump is circular pipeline structure, the inside of feed pump is equipped with piston body and stop collar, the piston body divide into water cavity and air cavity with the inside of feed pump, the stop collar is two, all fixes on the inner wall of feed pump for inject the motion position of piston body, be provided with water injection hole and the exhaust hole that communicates in the main part on the wall surface of feed pump, water injection hole and water cavity intercommunication for to the water cavity, release the air cavity is connected with the air cavity, be used for releasing in the air cavity, be connected with the air pump top of another air pump, the air pump is connected with the air pump is installed at the air cavity, the air cavity is connected with the air pump top of another air pump, the air pump is connected with the air intake pipe.
2. The automatic spraying wave absorbing system for the wind tunnel wind scoops of the coal mine wind shaft according to claim 1, wherein the spraying box comprises a box body, a supporting plate, an intermediate baffle plate, a cover plate, an overflow valve and spraying holes, the box body is of a non-cover cuboid metal shell-shaped structure, at least one water supply hole is formed in the side surface of the box body, the supporting plate is a metal plate provided with the water supply holes, the plurality of supporting plates are uniformly welded in the box body and used for enhancing the compression resistance of the box body, the intermediate baffle plate is the metal plate provided with the overflow holes and uniformly distributed, the overflow valve is installed in the overflow holes, the intermediate baffle plate is tightly attached to the upper edge of the supporting plate and welded in the box body, the box body is divided into an upper layer and a lower layer, the cover plate is fixed on the upper portion of the box body through screws, and the spraying Kong Buman cover plate is arranged.
3. The automatic spraying wave-absorbing system for the wind tunnel of the coal mine wind shaft according to claim 2, wherein the overflow valve consists of a rubber valve plug and an elastic strip, and is installed in the overflow hole by means of rivets or bonding.
4. The automatic spraying wave-absorbing system for the wind tunnel of the coal mine wind shaft according to claim 1, wherein the trigger switch comprises a shell, a fixed contact, a moving contact, a pressure-bearing film, a compression ring, a limiting block and a binding post, wherein the shell is an insulator, and the fixed contact, the limiting block and the binding post are all fixed at the bottom of the shell through screw installation.
5. The automatic spraying wave-absorbing system for the wind tunnel of the coal mine wind shaft according to claim 4, wherein the fixed contacts and the binding posts are respectively provided with two groups, each group is connected with a cable, the moving contacts are adhered to the pressure-bearing film, the whole moving contacts are arranged on the upper part of the shell through the pressing ring, and the pressing ring is fixed on the shell through screws.
6. The automatic spraying wave-absorbing system for the wind tunnel wind-guiding chamber of the coal mine according to any one of claims 1 to 5, wherein the spraying head is of a metal bent pipe structure, one end of the spraying head is provided with external threads, and the spraying head is installed in the spraying hole in a threaded connection mode.
7. The automatic spraying wave-absorbing system for the wind tunnel wind-guiding chamber of the coal mine wind shaft according to claim 6, wherein the gun pump connecting pipe is a metal pipe, and two ends of the gun pump connecting pipe are respectively connected with the water supply pump and the air gun through flange plates.
8. The automatic spraying wave absorbing system for the wind tunnel of the coal mine as claimed in claim 7, wherein the water feeding pipe is provided with a water injection valve, and the air charging pipe is provided with an air charging valve.
9. The automatic spray wave absorbing system for the wind tunnel of the coal mine wind shaft according to claim 8, wherein the water injection valve and the electromagnetic valve are stop valves, and the inflation valve is a one-way stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110475015.3A CN113153413B (en) | 2021-04-29 | 2021-04-29 | Automatic spraying wave-absorbing system for wind tunnel wind guiding tunnel of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110475015.3A CN113153413B (en) | 2021-04-29 | 2021-04-29 | Automatic spraying wave-absorbing system for wind tunnel wind guiding tunnel of coal mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113153413A CN113153413A (en) | 2021-07-23 |
| CN113153413B true CN113153413B (en) | 2023-06-30 |
Family
ID=76872434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110475015.3A Active CN113153413B (en) | 2021-04-29 | 2021-04-29 | Automatic spraying wave-absorbing system for wind tunnel wind guiding tunnel of coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113153413B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202055865U (en) * | 2011-05-30 | 2011-11-30 | 湖南科技大学 | Safety air bag automatic plugging device of mine anti-explosion well cover |
| RU2658690C1 (en) * | 2017-04-14 | 2018-06-22 | Юрий Владимирович Горлов | Multifunctional automatic system of localization of explosions of dust and gas-air mixtures in underground mining workings containing devices for localization of explosions |
| CN108756988A (en) * | 2018-06-08 | 2018-11-06 | 河南理工大学 | It is a kind of to be used to protect the advance relief features of the blast wave of coal mine air-shaft facility |
-
2021
- 2021-04-29 CN CN202110475015.3A patent/CN113153413B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202055865U (en) * | 2011-05-30 | 2011-11-30 | 湖南科技大学 | Safety air bag automatic plugging device of mine anti-explosion well cover |
| RU2658690C1 (en) * | 2017-04-14 | 2018-06-22 | Юрий Владимирович Горлов | Multifunctional automatic system of localization of explosions of dust and gas-air mixtures in underground mining workings containing devices for localization of explosions |
| CN108756988A (en) * | 2018-06-08 | 2018-11-06 | 河南理工大学 | It is a kind of to be used to protect the advance relief features of the blast wave of coal mine air-shaft facility |
Non-Patent Citations (1)
| Title |
|---|
| 计算判断防爆门性能方法探讨;姜天文;赵益;孙建华;曲征;;煤矿机械(01);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113153413A (en) | 2021-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109653647B (en) | Reinforced concrete protection safety airtight door | |
| CN202055865U (en) | Safety air bag automatic plugging device of mine anti-explosion well cover | |
| CN102155250B (en) | Self-reset explosion-proof door | |
| CN203321519U (en) | Full-automatic belt lane wind current isolation device | |
| CN108756988B (en) | A blast wave subducts structure in advance for protecting colliery air shaft facility | |
| CN102061929B (en) | Blowback fast explosion suppression device for coal mining working face | |
| CN113153413B (en) | Automatic spraying wave-absorbing system for wind tunnel wind guiding tunnel of coal mine | |
| CN211174109U (en) | Coal-winning machine spraying dust device | |
| CN201363065Y (en) | Anti-clip double-plank disaster relief door with drawing steel wire rope | |
| CN109395281B (en) | Gas storage type automatic fire extinguisher for electric automobile | |
| CN205387929U (en) | High -gas coal mine gas drainage system | |
| CN202327268U (en) | Explosion-proof relief valve | |
| CN200992927Y (en) | General pneumatic control rescuing door | |
| CN203702224U (en) | Explosion-proof well lid device | |
| CN206071637U (en) | Dual back-fire relief explosion venting device | |
| CN209984828U (en) | Gas storage type automatic fire extinguishing device for electric automobile | |
| CN210597471U (en) | Safe anticollision fire hydrant | |
| CN204552823U (en) | A kind of mine air filling type expansion brattice | |
| CN215721033U (en) | Backwater-proof and gas return-proof device for gas pipeline | |
| CN209959930U (en) | Vacuum breaker with reliable structure | |
| CN202250188U (en) | Comprehensive equipment for preventing accidents in 'one ventilation and three prevention' of stope | |
| CN201851144U (en) | Coal extraction face blowback type quick explosion suppression device | |
| CN212535763U (en) | A explosion-proof well lid plugging device for in mine | |
| CN203603957U (en) | Shock-resistant shaft well explosion-proof door | |
| CN110848439A (en) | Active bidirectional explosion-proof quick gate valve and quick explosion-proof method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |