CN219865125U - Triggering mechanism of underground explosion-proof device - Google Patents
Triggering mechanism of underground explosion-proof device Download PDFInfo
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- CN219865125U CN219865125U CN202321138305.XU CN202321138305U CN219865125U CN 219865125 U CN219865125 U CN 219865125U CN 202321138305 U CN202321138305 U CN 202321138305U CN 219865125 U CN219865125 U CN 219865125U
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- 238000004880 explosion Methods 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims description 16
- 230000001629 suppression Effects 0.000 claims description 9
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 239000000843 powder Substances 0.000 abstract description 6
- 230000003068 static effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model relates to a triggering mechanism of an underground explosion-proof device, a third piston which is in sealed sliding connection with the side wall of an air box and extends into a high-pressure air cylinder is arranged in the inner cavity of the air box, a fourth piston which is in sealed sliding connection with the inner cavity of the air box backwards is fixedly connected to the third piston, a piston rod is fixedly connected with the third piston, a first piston which extends forwards and penetrates through the front side wall of the air box is also in sealed sliding connection with the third piston, the first piston is in sealed sliding connection with the front side wall of the air box, the contact area of the end surface of the fourth piston with high-pressure air is larger than the contact area of the rear end surface of the third piston with the high-pressure air, and communication structures for communicating the inner cavity of the air box with the high-pressure air cylinder are also arranged on the third piston and the second piston. The force of the explosion impact driving the first piston to slide is smaller, and the sliding driving communication structure of the first piston is used for communicating the inner cavity of the gas tank with the high-pressure gas cylinder, so that the second piston is pushed to pass out of the second opening by means of the high-pressure gas, and the high-pressure gas is released in time to drive the fire extinguishing powder to extinguish fire.
Description
Technical Field
The utility model relates to the field of machinery, in particular to the technical field of mechanical parts, and particularly relates to a triggering mechanism of an underground explosion-proof device.
Background
The gas explosion in the coal mine is very dangerous, so that the explosion needs to be isolated to prevent the explosion from expanding and spreading to cause secondary explosion. In order to perform explosion suppression, two types of explosion suppression devices are arranged, one type of explosion suppression device can only perform one-way explosion suppression, the other type of explosion suppression device can perform two-way explosion suppression, and high-pressure gas is required to be released in any explosion suppression mode, so that the high-pressure gas drives fire extinguishing powder to be sprayed out of the explosion suppression device, and the fire extinguishing is realized.
In the present automatic explosion-proof device, the triggering mechanism of the underground explosion-proof device comprises a high-pressure air cylinder for storing high-pressure air and two sealing sliding joints connected through a piston rod, wherein one end of one piston is connected with a front receiving plate, after explosion, the first piston is driven to slide by explosion impact, so that the second piston is driven to penetrate out of the second opening through the piston rod, the high-pressure air in the high-pressure air cylinder is released, but when the explosion impact is smaller or the explosion distance is far, the impact of the explosion is insufficient, and the first piston and the piston rod drive the second piston to penetrate out of the second perforation, so that the high-pressure air cannot be released, and danger is caused.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a triggering mechanism of an underground explosion-proof device, which releases high-pressure gas in time to drive fire extinguishing powder to extinguish fire when the explosion impact is small or the explosion distance is long.
The utility model is realized through the following technical scheme that the triggering mechanism of the underground explosion-proof device comprises a high-pressure air cylinder which stores high-pressure air and is provided with a first opening and a second opening, and a second piston which is connected through a piston rod and is in sealing sliding connection with the second opening, wherein an air tank is fixedly connected to the first opening in a sealing way, a third piston which is in sealing sliding connection with the side wall of the air tank and extends into the high-pressure air cylinder is arranged in an inner cavity of the air tank, a fourth piston which is in sealing sliding connection with the inner cavity of the air tank in a backward way is fixedly connected to the third piston, a first piston which extends forwards and penetrates through the front side wall of the air tank is also in sealing sliding connection with the third piston, the first piston is connected with a front receiving plate which is positioned in front of the air tank, a sinking groove for the first piston to penetrate is formed in the piston, the area of the end face of the fourth piston, which is in contact with the high-pressure air, is larger than the area of the rear end face of the third piston, the third piston and the second piston are also provided with a structure which is communicated with the inner cavity of the high-pressure air tank.
When the fire extinguishing device is used, when explosion does not occur, the communication structure does not communicate the inner cavity of the gas tank with the high-pressure gas cylinder, the whole device is kept in a static state, when the explosion occurs, the explosion impact drives the first piston to move backwards through the front receiving plate, so that the first piston is driven to slide backwards in the third piston, the communication structure communicates the inner cavity of the gas tank with the high-pressure gas cylinder, high-pressure gas in the high-pressure gas cylinder enters the gas tank along the communication structure and enters the front of the fourth piston, the high-pressure gas drives the fourth piston to move backwards, namely drives the third piston to move backwards, the third piston drives the second piston to move backwards through the piston rod, finally drives the second piston to move to the outer side of the second opening, the high-pressure gas is ejected out of the second opening, compared with the condition that the explosion impact cannot drive the second piston to pass through the second perforation, the explosion impact drives the first piston to slide downwards, the first piston is driven to slide, the communication structure communicates the inner cavity of the gas tank with the high-pressure gas cylinder, the high-pressure gas cylinder is driven by the high-pressure gas cylinder to move backwards, namely the third piston is driven to move backwards, the third piston is driven to move forwards, and the high-pressure gas is driven to move, and the second piston to fire extinguishing powder is driven to extinguish.
Preferably, the communication structure comprises a plurality of vent holes which are formed in the third piston and located in the high-pressure air cylinder, the vent holes are communicated with a through hole for the first piston to slide in a sealing mode, grooves which extend out of the third piston along the axial direction are formed in the circumferential surface of the first piston, the grooves are located in front of the vent holes and correspond to the vent holes, and the axial distance from the grooves to the vent holes is smaller than the length from the grooves to the outside of the third piston.
When the preferred scheme is used, the circumferential surface of the first piston blocks the vent hole when explosion does not occur, and high-pressure gas cannot enter the through hole; when explosion occurs, the first piston moves backwards, so that the groove moves to the position right below the vent hole, and high-pressure gas enters the gas tank along the gap between the groove and the through hole, namely, the communication between the gas tank and the high-pressure gas cylinder is realized.
Preferably, the plurality of vent holes are uniformly distributed along the circumferential direction, and the grooves are closed along the circumferential direction to form a third annular groove.
The preferred embodiment facilitates the entry of high pressure gas from the high pressure cylinder into the recess through the plurality of vent holes.
Preferably, the fourth piston is screwed onto the third piston.
The preferred scheme is convenient for the disassembly, assembly and replacement of the fourth piston and the third piston.
Preferably, the end cover of the air box is in threaded connection with the front end surface of the air box, and the first piston is in sealed sliding connection with the end cover.
The arrangement of the end cover is convenient for the installation of the fourth piston and the first piston in the inner cavity of the gas tank.
Preferably, the front end face of the end cover is fixedly connected with a fixed ring, the side face of the fixed ring, which is connected with the end cover, is provided with an annular limiting groove, the limiting groove extends to the inner circumferential face of the fixed ring, the limiting groove and the end cover form a first annular groove, a second annular groove which is arranged corresponding to the first annular groove is formed in the first piston, and annular locking plates are arranged in the first annular groove and the second annular groove.
This preferred scheme is convenient for restrict the slip of first piston through the setting of locking plate, has avoided when this device installs, has triggered the removal of first piston, when the explosion, and the slip of first piston is direct with the locking plate rupture, consequently does not influence the slip of first piston.
The beneficial effects of the utility model are as follows: when explosion occurs, the first piston is driven to move backwards by the explosion impact through the front receiving plate, the first piston slides backwards in the third piston, the communication structure is used for communicating the inner cavity of the air box with the high-pressure air cylinder, high-pressure air in the high-pressure air cylinder enters the air box along the communication structure and enters the front of the fourth piston, the fourth piston is driven to move backwards by the high-pressure air, namely the third piston is driven to move backwards by the third piston, the second piston is driven to move backwards by the piston rod, finally, the second piston is driven to move to the outer side of the second opening, the high-pressure air is ejected from the second opening, the sliding force of the first piston is smaller relative to the condition that the explosion impact cannot drive the second piston to pass through the second perforation, the sliding force of the first piston drives the communication structure to communicate the inner cavity of the air box with the high-pressure air cylinder, and the second piston is driven to pass out from the second opening by the high-pressure air cylinder, and high-pressure air is released in time, and the high-pressure air is driven to drive the second piston to pass out of the second opening, and fire extinguishing powder is driven to extinguish.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
the figure shows:
1. the device comprises a first piston, 2, a second piston, 3, a third piston, 4, a fourth piston, 5, a piston rod, 6, a high-pressure air cylinder, 7, an air box, 8, a through hole, 9, a vent hole, 10, an end cover, 11, a fixed ring, 12 and a locking plate.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Referring to fig. 1-2, the triggering mechanism of the underground explosion-proof device comprises a high-pressure air cylinder 6, a second piston 2, a first opening, a second opening and a high-pressure air cylinder 6, wherein the high-pressure air cylinder 6 stores high-pressure air and is provided with a first opening and a second opening, the second piston 2 is connected through a piston rod 5 and is in sealed sliding connection with the second opening, and the first opening, the second opening and the high-pressure air cylinder 6 are coaxially arranged.
The first opening is fixedly connected with an air box 7 in a sealing way, a third piston 3 which is connected with the side wall of the air box in a sliding way in the high-pressure air cylinder 6 in a sealing way is arranged in the inner cavity of the air box, the third piston 3 is connected with a fourth piston 4 which is connected with the inner cavity of the air box in a sliding way in a backward sealing way in a threaded way, and the fourth piston 4 is matched with the inner cavity of the air box.
The piston rod 5 is fixedly connected with the third piston 3, the third piston 3 is internally provided with a first piston 1 which extends forwards and penetrates through the front side wall of the air box 7 in a sealing sliding manner, the first piston 1 is connected onto the front side wall of the air box 7 in a sealing sliding manner, the first piston 1 is connected with a front receiving plate positioned in front of the air box 7, a sinking groove for the first piston 1 to penetrate is formed in the piston, the area of the end face of the fourth piston 4, which is contacted with high-pressure air, is larger than the area of the rear end face of the third piston 3, which is contacted with the high-pressure air, and the third piston 3 and the second piston 2 are further provided with a communication structure for communicating the inner cavity of the air box with the high-pressure air cylinder 6.
The communication structure is including seting up on the third piston 3 and being located a plurality of air vents 9 of high-pressure inflator 6, a plurality of air vents 9 evenly arrange along circumference, air vent 9 intercommunication supplies the sealed gliding through-hole 8 of first piston 1, set up on the periphery of first piston 1 along the recess that extends to outside the third piston 3 of axial, the recess is located air vent 9 the place ahead and corresponds the setting with air vent 9, and the recess is along circumference closure formation third annular, and the axial distance of recess to air vent 9 is less than the length that the recess extends to outside the third piston 3.
An end cap 10 of the air box 7 is screwed on the front end surface of the air box 7, and the first piston 1 is in sealing sliding connection with the end cap 10.
The front end face of the end cover 10 is fixedly connected with a fixed ring 11, the side face, connected with the end cover 10, of the fixed ring 11 is provided with an annular limiting groove, the limiting groove extends to the inner circumferential face of the fixed ring 11, the limiting groove and the end cover 10 form a first annular groove, the first piston 1 is provided with a second annular groove which is arranged corresponding to the first annular groove, and annular locking plates 12 are arranged in the first annular groove and the second annular groove.
When the explosion does not occur in use, the circumferential surface of the first piston 1 blocks the vent hole 9, high-pressure gas cannot enter the through hole 8, namely the communication structure does not communicate the inner cavity of the gas tank with the high-pressure gas cylinder 6, and the whole device is kept in a static state;
when explosion happens, the first piston 1 is driven to move backwards by the explosion impact through the front receiving plate, the locking plate 12 is broken by the backward movement of the first piston 1, meanwhile, the first piston 1 slides backwards in the third piston 3, the groove moves to the position right below the vent hole 9, high-pressure gas enters the gas tank 7 along the gap between the groove and the through hole 8, namely, the communication between the gas tank 7 and the high-pressure gas cylinder 6 is realized, the high-pressure gas enters the front of the fourth piston 4, the fourth piston 4 is driven to move backwards by the high-pressure gas, namely, the third piston 3 moves backwards by the third piston 3, the second piston 2 is driven to move backwards by the piston rod 5, finally, the second piston 2 is driven to the outer side of the second opening, the high-pressure gas is ejected from the second opening, and compared with the situation that the explosion impact cannot drive the second piston 2 to penetrate out of the second through hole, the high-pressure gas is driven by the high-pressure gas, the sliding of the first piston 1 is driven by the high-pressure gas, the inner cavity of the gas tank is communicated with the high-pressure gas cylinder 6 by the communication structure, and the high-pressure gas is driven by the high-pressure gas to push the second piston 2 to move out of the second opening, and the high-pressure gas is released in time, and the fire extinguishing powder is driven.
Of course, the above description is not limited to the above examples, and the technical features of the present utility model that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present utility model and not for limiting the same, and the present utility model has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present utility model and the scope of the appended claims.
Claims (6)
1. The utility model provides an explosion suppression device trigger mechanism in pit, includes stores high-pressure gas and sets up first opening second open-ended high-pressure inflator (6), connects and sealed second piston (2) in the sliding connection second opening through piston rod (5), its characterized in that: the utility model discloses a high-pressure gas cylinder, including first opening, second opening, third opening, fourth opening, first opening, second opening, third opening, first opening, sealing fixedly connected with gas tank (7) has sealed sliding connection in the first opening is equipped with in the gas tank inner chamber and is equipped with sealed sliding connection on the gas tank lateral wall and extends to third piston (3) in high-pressure gas cylinder (6) in, the rigid coupling has fourth piston (4) of back sealed sliding in gas tank inner chamber on third piston (3), piston rod (5) and third piston (3) rigid coupling, still sealed sliding connection has first piston (1) that extends forward and runs through the preceding lateral wall of gas tank (7) in third piston (3), first piston (1) sealed sliding connection is on the preceding lateral wall of gas tank (7), and first piston (1) are connected with the preceding receiver plate that is located gas tank (7) the place ahead, set up the heavy groove that supplies first piston (1) to penetrate in the piston, the terminal surface area of fourth piston (4) and high-pressure gas cylinder's contact is greater than the terminal surface of third piston (3) rear end surface and high-pressure gas cylinder's contact, still set up intercommunication structure with high-pressure gas cylinder (6) on third piston (2).
2. The downhole flameproof device triggering mechanism according to claim 1, wherein: the communication structure comprises a plurality of vent holes (9) which are formed in the third piston (3) and located in the high-pressure air cylinder (6), the vent holes (9) are communicated with a through hole (8) for the first piston (1) to slide in a sealing mode, grooves which extend to the outside of the third piston (3) along the axial direction are formed in the circumferential surface of the first piston (1), the grooves are located in front of the vent holes (9) and correspond to the vent holes (9), and the axial distance from the grooves to the vent holes (9) is smaller than the length from the grooves to the outside of the third piston (3).
3. The downhole flameproof device triggering mechanism according to claim 2, wherein: the vent holes (9) are uniformly distributed along the circumferential direction, and the grooves are closed along the circumferential direction to form a third annular groove.
4. The downhole flameproof device triggering mechanism according to claim 1, wherein: the fourth piston (4) is connected to the third piston (3) in a threaded manner.
5. The downhole flameproof device triggering mechanism according to claim 1, wherein: an end cover (10) of the air box (7) is in threaded connection with the front end surface of the air box (7), and the first piston (1) is in sealing sliding connection with the end cover (10).
6. The downhole flameproof device triggering mechanism according to claim 5, wherein: the fixed ring (11) is fixedly connected to the front end face of the end cover (10), an annular limiting groove is formed in the side face, connected with the end cover (10), of the fixed ring (11), the limiting groove extends to the inner circumferential face of the fixed ring (11), a first annular groove is formed in the fixed ring (11), the limiting groove and the end cover (10), a second annular groove corresponding to the first annular groove is formed in the first piston (1), and annular locking plates (12) are arranged in the first annular groove and the second annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321138305.XU CN219865125U (en) | 2023-05-12 | 2023-05-12 | Triggering mechanism of underground explosion-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321138305.XU CN219865125U (en) | 2023-05-12 | 2023-05-12 | Triggering mechanism of underground explosion-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219865125U true CN219865125U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321138305.XU Active CN219865125U (en) | 2023-05-12 | 2023-05-12 | Triggering mechanism of underground explosion-proof device |
Country Status (1)
| Country | Link |
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| CN (1) | CN219865125U (en) |
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2023
- 2023-05-12 CN CN202321138305.XU patent/CN219865125U/en active Active
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