Automatic explosive-proof device

Abstract

An automatic explosive-proof device comprises a trigger device, a pressure and liquid storage device, a shock wave receiving and sensing device and a spraying device, the trigger device comprises a sleeve and a trigger piston arranged in the sleeve, a first inlet hole is formed in the sleeve, the pressure and liquid storage device is communicated with the first inlet hole, and the pressure and liquid storage device is communicated with the shock wave receiving and sensing device. The trigger piston is of a hollow structure, a second inlet hole communicated with the hollow structure is formed in the trigger piston, a first sealing part capable of blocking the first inlet hole is arranged on the trigger piston, one end of the trigger piston is connected with the shock wave receiving and sensing device, and the hollow structure of the trigger piston is communicated with the spraying device. Through cooperative arrangement of the pressure and liquid storage device and the trigger device, regular inspection and replacement of a fire extinguishing medium are not needed, the safety is improved, the cost is reduced, fire extinguishing liquid is sprayed out of the spraying device under high pressure, unnecessary casualties are reduced, the trigger structure is simple, the manufacturing cost is low, installation is convenient, and the use efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of mine safety equipment, and particularly relates to an automatic explosion isolation device. BACKGROUND

[0002] The safety of construction in a mine has always been an important issue in the mining industry, and ensuring the safety of underground operation is also explicitly stipulated in the relevant national standards.

[0003] The automatic explosion isolation device is a key equipment for preventing the propagation of flame after an explosion in a mine. The working principle is that the shock wave will reach the explosion isolation device earlier than the flame when an explosion occurs. Therefore, the explosion isolation main machine is triggered by the shock wave generated by the explosion. After triggering, the fire extinguishing powder in the storage cover is sprayed out through the powder spraying port under the action of high-pressure gas, so as to achieve the blocking of the flame transmission.

[0004] However, the prior art has the following defects: 1. The fire extinguishing powder needs to be checked and replaced regularly, otherwise it will condense into blocks and cannot effectively block the continuation of the explosion when an explosion accident occurs, causing devastating destruction and impact on the entire underground construction; 2. The high-pressure gas and the fire extinguishing powder are sprayed out at the same time, which will cause a strong impact on nearby workers, causing unnecessary casualties; 3. One-way triggering, only when an explosion occurs on the side where the shock wave receiver is located, the explosion isolation main machine can be triggered, so two explosion isolation devices are usually installed opposite each other in the tunnel to implement fire extinguishing for an explosion occurring on either side. However, this method undoubtedly increases the use cost. SUMMARY

[0005] In order to solve the above technical problems, the present application aims to provide an automatic explosion isolation device.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows.

[0007] An automatic explosion isolation device, comprising a trigger device, a pressure storage and liquid storage device, a shock wave receiving and sensing device, and a spraying device, the trigger device comprising a sleeve and a trigger piston arranged in the sleeve, the sleeve being provided with a first inlet hole, the pressure storage and liquid storage device being in communication with the first inlet hole, the trigger piston being of a hollow structure and being provided with a second inlet hole in communication with the hollow structure, the trigger piston being provided with a first sealing portion capable of blocking the first inlet hole, one end of the trigger piston being connected with the shock wave receiving and sensing device, and the hollow structure of the trigger piston being in communication with the spraying device. The pressure storage and liquid storage device and the first inlet hole can be connected by a pipeline. The sleeve and the trigger piston have been sealed to prevent leakage of high-pressure liquid.

[0008] Further preferably, the other end of the trigger piston is connected with the shock wave receiving and sensing device, the first sealing part divides the hollow structure of the trigger piston into a left chamber and a right chamber, the second inlet hole has two holes respectively arranged on the left and right sides of the first sealing part and communicates with the left chamber and the right chamber, and the left chamber and the right chamber respectively communicate with the corresponding spraying device.

[0009] Further preferably, the sleeve is provided with a liquid passing channel. When the shock wave arrives, the first sealing part moves to expose the first inlet hole, and the first inlet hole and the second inlet hole communicate through the liquid passing channel. The arrangement of the liquid passing channel increases the docking space of the first inlet hole and the second inlet hole, prevents the first inlet hole and the second inlet hole from failing to directly align and communicate after the first sealing part and the trigger piston move after being impacted by the shock wave, and causes the high-pressure liquid to fail to be sprayed out for fire extinguishing.

[0010] Further preferably, the liquid passing channel is composed of the space surrounded by the inner wall of the sleeve, the first sealing part, and the outer wall of the trigger piston.

[0011] Further preferably, a second sealing part is arranged on the trigger piston away from the right side of the first sealing part, and the liquid passing channel is composed of the space surrounded by the right inner wall of the sleeve, the first sealing part, the outer wall of the trigger piston, and the second sealing part.

[0012] Further preferably, the first sealing part is respectively provided with a second liquid passing channel and a first liquid passing channel on the left and right sides, the first liquid passing channel is composed of the space surrounded by the right inner wall of the sleeve, the first sealing part, and the outer wall of the trigger piston, and the second liquid passing channel is composed of the space surrounded by the left inner wall of the sleeve, the first sealing part, and the outer wall of the trigger piston.

[0013] Further preferably, a third sealing part and a second sealing part are arranged on the trigger piston away from the left and right sides of the first sealing part, the first liquid passing channel is composed of the space surrounded by the right inner wall of the sleeve, the first sealing part, the outer wall of the trigger piston, and the second sealing part, and the second liquid passing channel is composed of the space surrounded by the left inner wall of the sleeve, the first sealing part, the outer wall of the trigger piston, and the third sealing part.

[0014] Further preferably, the shock wave receiving and sensing device is composed of a shock wave receiver and is connected with the trigger piston.

[0015] Further preferably, the shock wave receiving and sensing device is composed of a shock wave receiver and a push rod, the shock wave receiver is arranged on the push rod, the push rod is a hollow structure, and the trigger piston is communicated with the spraying device through the push rod.

[0016] Further preferably, the high-pressure fire extinguishing liquid stored in the pressure storage and liquid storage device can be high-pressure carbon dioxide liquid or high-pressure liquid nitrogen or a mixture of high-pressure gas and water.

[0017] Further preferably, the pressure storage and liquid storage device has at least two, and the spraying device has at least two on one side of the trigger piston and is communicated with the hollow structure of the trigger piston (12).

[0018] Further preferably, the pressure storage and liquid storage device is connected in parallel through a tee joint, a check valve and a stop valve are arranged on each parallel connection pipeline respectively, and the spraying device is connected in parallel through a tee joint. The parallel connection design of multiple pressure storage and liquid storage devices increases the amount of fire extinguishing medium and correspondingly increases the fire extinguishing time. The check valve is arranged to prevent the backflow of high-pressure liquid, the stop valve is arranged to control the high-pressure liquid in the pressure storage and liquid storage device to be in a standby spraying state or a prohibited spraying state, and the parallel connection design of multiple spraying devices increases the fire extinguishing range.

[0019] The present application has the following beneficial effects relative to the prior art: through the cooperation of the pressure storage and liquid storage device and the trigger device, the fire extinguishing medium does not need to be regularly checked and replaced, the service life of the explosion-proof device is increased, the continuation of the explosion is effectively blocked when the explosion accident occurs, the safety of use is increased, and the use cost is reduced; the fire extinguishing liquid is sprayed out from the spraying device under the high-pressure pushing, the danger of direct impact on nearby workers caused by the direct spraying of the high-pressure gas and the fire extinguishing powder mixture is avoided, and unnecessary personnel casualties are reduced; the trigger structure is simple, the manufacturing cost is low, the installation is convenient, and the use efficiency is high; through the cooperation of the pressure storage and liquid storage device and the trigger device and the arrangement of the left and right liquid passing channels and the shock wave receiving and sensing devices connected to both ends of the trigger piston in the trigger device, the explosion of any side in the tunnel can trigger the fire extinguishing, the safety is improved, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic diagram of the first embodiment of the present application.

[0021] Figure 2 It is a structure schematic diagram of the first embodiment of the present application in a working state.

[0022] Figure 3 It is a structure schematic diagram of the second embodiment of the present application.

[0023] Figure 4 It is a structure schematic diagram of the third embodiment of the present application.

[0024] Figure 5 Structure diagram of the fourth embodiment of the present application.

[0025] Figure 6 Structure diagram of the fourth embodiment of the present application in working state.

[0026] Figure 7 Structure diagram of the fifth embodiment of the present application.

[0027] Figure 8 Structure diagram of the sixth embodiment of the present application.

[0028] Wherein, 1. Trigger device; 11. Sleeve; 111. First access hole; 12. Trigger piston; 121. First sealing part; 122. Second access hole; 123. Second sealing part; 124. Right chamber; 125. Left chamber; 126. Third sealing part.

[0029] 2. Pressure and liquid storage device.

[0030] 3. Shock wave receiving and sensing device; 31. Shock wave receiver; 32. Push rod.

[0031] 4. Spraying device.

[0032] 5. Liquid passage; 51. First liquid passage; Second liquid passage.

[0033] 6. Three-way piece.

[0034] 7. Check valve.

[0035] 8. Stop valve.

[0036] 9. Sealing ring. Embodiment

[0037] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the present application will be described clearly and completely below by combining the drawings in the specific embodiments. Obviously, the embodiments described below are only some of the embodiments of the present application, not all. Based on the embodiments in the present patent, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present patent.

[0038] At the same time, the terms "center", "longitudinal", "lateral", "up", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used in this specification to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be regarded as the scope of implementation of this application. First embodiment

[0039] As attached Figure 1 and Figure 2 As shown, an automatic explosion-proof device includes a trigger device 1, a pressure-liquid storage device 2 storing high-pressure fire-extinguishing liquid, a shock wave receiving and sensing device 3, and a spraying device 4. The trigger device 1 includes a sleeve 11 and a trigger piston 12 arranged in the sleeve 11, and the sleeve 11 is provided with a first entry hole 111. The pressure-liquid storage device 2 is connected to the first entry hole 111. The trigger piston 12 is a hollow structure and is provided with a second entry hole 122 connected to the hollow structure. The trigger piston 12 is provided with a first sealing portion 121 that can block the first entry hole 111. One end of the trigger piston 12 is connected to the shock wave receiving and sensing device 3, and the hollow structure of the trigger piston 12 is connected to the spraying device 4.

[0040] When a shock wave comes, the shock wave receiving sensing device 3 receives the force of the shock wave to push the trigger piston 12 to move in the sleeve 11, driving the first sealing portion 121 to move to expose the first entry hole 111 on the sleeve 11. At this time, the first entry hole 111 is connected to the second entry hole 122, and the high-pressure liquid in the pressure and liquid storage device 2 passes through the first entry hole 111 and the second entry hole 122, and is sprayed out from the spray device 4 through the hollow structure of the trigger piston 12 to achieve fire extinguishing.

[0041] The sleeve 11 is provided with a liquid passage 5 to increase the docking space between the first inlet hole 111 and the second inlet hole 122, so as to prevent the first sealing portion 121 and the trigger piston 12 from moving after being subjected to a shock wave, so that the first inlet hole 111 and the second inlet hole 122 fail to be directly aligned and connected, resulting in failure of high-pressure liquid to spray out and extinguish the fire.

[0042] The liquid passage 5 is formed by the space surrounded by the inner wall of the sleeve 11, the first sealing part 121 and the outer wall of the trigger piston 12. Taking the first sealing part 121 and the trigger piston 12 as an example, the diameter of the first sealing part 121 is larger than that of the trigger piston 12, and the first sealing part 121 is tightly attached to the inner wall of the sleeve 11, thereby forming the liquid passage 5, which facilitates the high-pressure liquid to pass through.

[0043] The second sealing part 123 is arranged on the trigger piston 12 away from the first sealing part 121, and the liquid passage 5 is formed by the space surrounded by the inner wall of the sleeve 11, the first sealing part 121, the outer wall of the trigger piston 12 and the second sealing part 123. Taking the first sealing part 121, the second sealing part 123 and the trigger piston 12 as an example, the diameters of the first sealing part 121 and the second sealing part 123 are larger than that of the trigger piston 12, and the first sealing part 121 and the second sealing part 123 are tightly attached to the inner wall of the sleeve 11, thereby forming the liquid passage 5, which facilitates the high-pressure liquid to pass through, and further optimizes the liquid to flow out from the position where the trigger piston 12 extends out of the sleeve 11 when the high-pressure liquid passes through the liquid passage 5.

[0044] The shock wave receiving and sensing device 3 is composed of a shock wave receiver 31 and a push rod 32, the shock wave receiver 31 is arranged on the push rod 32, the push rod 32 is a hollow structure, and the trigger piston 12 communicates with the spraying device 4 through the push rod 32. The shock wave receiver 31 receives the shock wave, and under the action of the shock wave, the push rod 32 pushes the trigger piston 12 to move in the sleeve 11. When the first sealing part 121 moves to expose the first entering hole 111 on the sleeve 11, at this time, the first entering hole 111 and the second entering hole 122 communicate through the liquid passage 5, and the high-pressure liquid in the pressure storage and liquid storage device 2 passes through the first entering hole 111 and the second entering hole 122, and is sprayed out of the spraying device 4 through the hollow trigger piston 12 and the hollow push rod 32, thereby achieving fire extinguishing.

[0045] The high-pressure fire extinguishing liquid stored in the pressure storage and liquid storage device 2 can be high-pressure carbon dioxide liquid, high-pressure liquid nitrogen or a mixture of high-pressure gas and water. Second embodiment

[0046] As shown in the accompanying drawings Figure 3The automatic explosion isolation device comprises a trigger device 1, a pressure liquid storage device 2 storing high-pressure fire extinguishing liquid, a shock wave receiving and sensing device 3, and a spraying device 4. The trigger device 1 comprises a sleeve 11 and a trigger piston 12 arranged in the sleeve 11. The sleeve 11 is provided with a first access hole 111, and the pressure liquid storage device 2 is in communication with the first access hole 111. The trigger piston 12 is hollow and is provided with a second access hole 122 in communication with the hollow structure. The trigger piston 12 is provided with a first sealing part 121 capable of blocking the first access hole 111. One end of the trigger piston 12 is connected with the shock wave receiving and sensing device 3, and the hollow structure of the trigger piston 12 is in communication with the spraying device 4. The shock wave receiving and sensing device 3 is composed of a shock wave receiver 31 arranged directly on the trigger piston 12.

[0047] When the shock wave arrives, the shock wave receiver 31 of the shock wave receiving and sensing device 3 receives the force of the shock wave to push the trigger piston 12 to move in the sleeve 11, drive the first sealing part 121 to move to expose the first access hole 111 on the sleeve 11. At this time, the first access hole 111 is in communication with the second access hole 122, and the high-pressure liquid in the pressure liquid storage device 2 passes through the first access hole 111 and the second access hole 122, passes through the hollow trigger piston 12, and is sprayed from the spraying device 4 to achieve fire extinguishing.

[0048] The sleeve 11 is provided with a liquid passing channel 5 to increase the docking space of the first access hole 111 and the second access hole 122, so that after the first sealing part 121 and the trigger piston 12 move after being impacted by the shock wave, the first access hole 111 and the second access hole 122 can be directly aligned and communicated, so that the high-pressure liquid can be sprayed for fire extinguishing.

[0049] The liquid passing channel 5 is composed of the space surrounded by the inner wall of the sleeve 11 and the outer wall of the first sealing part 121 and the trigger piston 12. Taking the first sealing part 121 and the trigger piston 12 as examples in a cylindrical shape, the diameter of the first sealing part 121 is greater than the diameter of the trigger piston 12 and is tightly fitted on the inner wall of the sleeve 11, thereby forming the liquid passing channel 5 for the high-pressure liquid to pass through.

[0050] The trigger piston 12 is provided with a second sealing part 123 away from the first sealing part 121, and the liquid passage 5 is formed by the space surrounded by the inner wall of the sleeve 11, the first sealing part 121, the outer wall of the trigger piston 12 and the second sealing part 123. Taking the first sealing part 121, the second sealing part 123 and the trigger piston 12 as cylindrical shapes as an example, the diameters of the first sealing part 121 and the second sealing part 123 are greater than the diameter of the trigger piston 12 and are tightly fitted to the inner wall of the sleeve 11, thereby forming the liquid passage 5, facilitating the passage of high-pressure liquid, and more optimally avoiding the outflow of high-pressure liquid from the position where the trigger piston 12 extends out of the sleeve 11 when the high-pressure liquid passes through the liquid passage 5.

[0051] The high-pressure fire extinguishing liquid stored in the pressure storage and liquid storage device 2 can be high-pressure carbon dioxide liquid or high-pressure liquid nitrogen or a mixture of high-pressure gas and water. Third embodiment

[0052] As shown in the accompanying drawings, Figure 4 An automatic explosion-proof device, based on the first embodiment, the pressure storage and liquid storage device 2 and the spraying device 4 are at least two respectively, the pressure storage and liquid storage device 2 is connected in parallel through a tee joint 6, a check valve 7 and a stop valve 8 are respectively arranged on each parallel connection pipeline, and the spraying device 4 is connected in parallel through a tee joint 6. The parallel design of multiple pressure storage and liquid storage devices 2 increases the amount of fire extinguishing medium and correspondingly increases the fire extinguishing time, and the parallel design of multiple spraying devices increases the fire extinguishing range. The check valve 7 arranged on the pipeline connecting the pressure storage and liquid storage device 2 and the first inlet hole 111 can prevent the backflow of high-pressure liquid, and the stop valve 8 can control the high-pressure liquid in the pressure storage and liquid storage device 2 to be in a standby spraying state or a prohibited spraying state, for example, closing the stop valve 8 during transportation can effectively prevent the trigger piston 12 from moving the first sealing part 121 to make the first inlet hole 111 and the second inlet hole 122 communicate, causing the high-pressure liquid to be sprayed, or when the pressure storage and liquid storage device 2 is being filled with liquid, the trigger piston 12 is prevented from moving the first sealing part 121 to make the first inlet hole 111 and the second inlet hole 122 communicate, causing the high-pressure liquid to be sprayed. Fourth embodiment

[0053] As shown in the accompanying drawings, Figure 5 and Figure 6As shown, an automatic explosion isolation device comprises a trigger device 1, a pressure and liquid storage device 2 storing high-pressure fire extinguishing liquid, a shock wave receiving and sensing device 3, and a spraying device 4. The trigger device 1 comprises a sleeve 11 and a trigger piston 12 arranged in the sleeve 11. The sleeve 11 is provided with a first access hole 111. The pressure and liquid storage device 2 is in communication with the first access hole 111. The trigger piston 12 is hollow and provided with a second access hole 122 in communication with the hollow structure. The trigger piston 12 is provided with a first sealing portion 121 capable of blocking the first access hole 111. One end of the trigger piston 12 is connected with the shock wave receiving and sensing device 3. The hollow structure of the trigger piston 12 is in communication with the spraying device 4. The other end of the trigger piston 12 is connected with the shock wave receiving and sensing device 3. The first sealing portion 121 divides the hollow structure of the trigger piston 12 into a left chamber 125 and a right chamber 124. The second access hole 122 has two holes arranged on the left and right sides of the first sealing portion 121 respectively and in communication with the left chamber 125 and the right chamber 124. The left chamber 125 and the right chamber 124 are respectively in communication with the corresponding spraying device 4.

[0054] When a shock wave comes from the right side, the shock wave receiving and sensing device 3 connected with the right end of the trigger piston 12 receives the force of the shock wave and pushes the trigger piston 12 to move leftward in the sleeve 11, driving the first sealing portion 121 to move and expose the first access hole 111 on the sleeve 11. At this time, the first access hole 111 is in communication with the second access hole 122 arranged on the right side of the first sealing portion 121. The high-pressure liquid in the pressure and liquid storage device 2 passes through the first access hole 111 and the second access hole 122, passes through the hollow trigger piston 12, and is sprayed from the spraying device 4, thereby achieving fire extinguishing. If a shock wave comes from the left side, the shock wave receiving and sensing device 3 connected with the left end of the trigger piston 12 receives the force of the shock wave and pushes the trigger piston 12 to move rightward in the sleeve 11, driving the first sealing portion 121 to move and expose the access hole 111 on the sleeve 11. At this time, the access hole 111 is in communication with the second access hole 122 arranged on the left side of the first sealing portion 121. The high-pressure liquid in the pressure and liquid storage device 2 passes through the first access hole 111 and the second access hole 122, passes through the hollow trigger piston 12, and is sprayed from the spraying device 4, thereby achieving fire extinguishing.

[0055] The first sealing part 121 is provided with a second liquid passage 52 and a first liquid passage 51 on the left and right sides, respectively. The first liquid passage 51 is composed of the space surrounded by the inner wall of the sleeve 11 on the right side, the first sealing part 121, and the outer wall of the trigger piston 12. The second liquid passage 52 is composed of the space surrounded by the inner wall of the sleeve 11 on the left side, the first sealing part 121, and the outer wall of the trigger piston 12. Taking the first sealing part 121 and the trigger piston 12 as examples in the form of a cylinder, the diameter of the first sealing part 121 is greater than that of the trigger piston 12 and closely fits the inner wall of the sleeve 11, thereby forming the second liquid passage 52 and the first liquid passage 51 on the left and right sides of the first sealing part 121 to facilitate the passage of high-pressure liquid. The arrangement of the first liquid passage 51 and the second liquid passage 52 increases the docking space of the first inlet hole 111 and the second inlet hole 122, prevents the first sealing part 121 and the trigger piston 12 from moving after being impacted by a shock wave, and ensures that the first inlet hole 111 and the second inlet hole 122 are directly aligned and connected, so that high-pressure liquid can be sprayed out to extinguish the fire.

[0056] The second sealing part 123 is arranged on the trigger piston 12 away from the right side of the first sealing part 121. The first liquid passage 51 is composed of the space surrounded by the inner wall of the sleeve 11 on the right side, the first sealing part 121, the outer wall of the trigger piston 12, and the second sealing part 123. Taking the first sealing part 121, the second sealing part 123, and the trigger piston 12 as examples in the form of a cylinder, the diameters of the first sealing part 121 and the second sealing part 123 are greater than that of the trigger piston 12 and closely fit the inner wall of the sleeve 11, thereby forming the first liquid passage 51 to facilitate the passage of high-pressure liquid, and more optimally avoiding the outflow of high-pressure liquid from the position where the trigger piston 12 extends out of the sleeve 11 when passing through the first liquid passage 51.

[0057] The third sealing part 126 is arranged on the trigger piston 12 away from the left side of the first sealing part 121. The second liquid passage 52 is composed of the space surrounded by the inner wall of the sleeve 11 on the left side, the first sealing part 121, the outer wall of the trigger piston 12, and the third sealing part 126. Taking the first sealing part 121, the third sealing part 126, and the trigger piston 12 as examples in the form of a cylinder, the diameters of the first sealing part 121 and the third sealing part 126 are greater than that of the trigger piston 12 and closely fit the inner wall of the sleeve 11, thereby forming the second liquid passage 52 to facilitate the passage of high-pressure liquid, and more optimally avoiding the outflow of high-pressure liquid from the position where the trigger piston 12 extends out of the sleeve 11 when passing through the second liquid passage 52.

[0058] The shock wave receiving sensing device 3 comprises a shock wave receiver 31 and a push rod 32. The shock wave receiver 31 is mounted on the push rod 32, which has a hollow structure. The trigger piston 12 is connected to the spray device 4 via the push rod 32. The shock wave is received by the shock wave receiver 31, and under the action of the shock wave, the push rod 32 pushes the trigger piston 12 to move within the sleeve 11. When the first sealing portion 121 moves leftward or rightward to expose the first inlet hole 111 in the sleeve 11, the first inlet hole 111 and the second inlet hole 122 are connected via the first liquid passage 51 or the second liquid passage 52. The high-pressure liquid in the pressure and liquid storage device 2 passes through the first inlet hole 111 and the second inlet hole 122, passes through the hollow structure of the trigger piston 12 and the hollow structure of the push rod 32, and is sprayed out of the spray device 4 to extinguish the fire.

[0059] The high-pressure fire extinguishing liquid stored in the pressure and liquid storage device 2 can be high-pressure carbon dioxide liquid, high-pressure liquid nitrogen, or a mixture of high-pressure gas and water. Fifth embodiment

[0060] As attached Figure 7 As shown, an automatic explosion-proof device includes a trigger device 1, a pressure storage device 2 storing a high-pressure fire extinguishing liquid, a shock wave receiving sensor 3 and a spraying device 4, wherein the trigger device 1 includes a sleeve 11 and a trigger piston 12 arranged in the sleeve 11, the sleeve 11 is provided with a first entry hole 111, the pressure storage device 2 is connected to the first entry hole 111, the trigger piston 12 is a hollow structure, and is provided with a second entry hole 122 connected to the hollow structure, the trigger piston 12 is provided with a first sealing portion 121 that can block the first entry hole 111, and one end of the trigger piston 12 is connected to the shock wave receiving sensor Device 3 is connected, the hollow structure of the trigger piston 12 is connected to the spraying device 4, the other end of the trigger piston 12 is connected to the shock wave receiving sensing device 3, the first sealing portion 121 divides the hollow structure of the trigger piston 12 into a left chamber 125 and a right chamber 124, and there are two second inlet holes 122 respectively arranged on the left and right sides of the first sealing portion 121, which are connected to the left chamber 125 and the right chamber 124, and the left chamber 125 and the right chamber 124 are respectively connected to the corresponding spraying devices 4, and the shock wave receiving sensing device 3 is composed of a shock wave receiver 31, which is directly arranged on the trigger piston 12.

[0061] When the shock wave comes from the right side, the shock wave receiver 31 arranged at the right end of the trigger piston 12 receives the force of the shock wave and pushes the trigger piston 12 to move leftward in the sleeve 11, driving the first sealing part 121 to move to expose the first access hole 111 on the sleeve 11, at this time the first access hole 111 is in communication with the second access hole 122 arranged at the right side of the first sealing part 121, the high-pressure liquid in the pressure storage and liquid storage device 2 passes through the first access hole 111 and the second access hole 122, and is sprayed out of the spraying device 4 through the hollow trigger piston 12, achieving fire extinguishing. If the shock wave comes from the left side, the shock wave receiver 31 arranged at the left end of the trigger piston 12 receives the force of the shock wave and pushes the trigger piston 12 to move rightward in the sleeve 11, driving the first sealing part 121 to move to expose the access hole 111 on the sleeve 11, at this time the first access hole 111 is in communication with the second access hole 122 arranged at the left side of the first sealing part 121, the high-pressure liquid in the pressure storage and liquid storage device 2 passes through the first access hole 111 and the second access hole 122, and is sprayed out of the spraying device 4 through the hollow trigger piston 12, achieving fire extinguishing.

[0062] The first sealing part 121 is arranged with a second liquid passage 52 and a first liquid passage 51 at the left and right sides, respectively, the first liquid passage 51 is composed of the space surrounded by the right inner wall of the sleeve 11, the first sealing part 121 and the outer wall of the trigger piston 12, and the second liquid passage 52 is composed of the space surrounded by the left inner wall of the sleeve 11, the first sealing part 121 and the outer wall of the trigger piston 12. Taking the first sealing part 121 and the trigger piston 12 as an example in the form of a cylinder, the diameter of the first sealing part 121 is larger than that of the trigger piston 12 and is tightly fitted to the inner wall of the sleeve 11, thereby forming the second liquid passage 52 and the first liquid passage 51 at the left and right sides of the first sealing part 121 to facilitate the passage of high-pressure liquid. The arrangement of the first liquid passage 51 and the second liquid passage 52 increases the docking space of the first access hole 111 and the second access hole 122, preventing the first access hole 111 and the second access hole 122 from failing to directly align and communicate after the first sealing part 121 and the trigger piston 12 move after being impacted by the shock wave, so that the high-pressure liquid cannot be sprayed out to extinguish the fire.

[0063] The second sealing part 123 is arranged on the trigger piston 12 away from the right side of the first sealing part 121. The first liquid passage 51 is formed by the space surrounded by the inner wall of the sleeve 11 right side, the first sealing part 121, the outer wall of the trigger piston 12 and the second sealing part 123. Taking the first sealing part 121, the second sealing part 123 and the trigger piston 12 as cylindrical shape for example, the diameters of the first sealing part 121 and the second sealing part 123 are greater than the diameter of the trigger piston 12 and closely adhere to the inner wall of the sleeve 11, thereby forming the first liquid passage 51, facilitating the high-pressure liquid to pass through, and more optimally avoiding the high-pressure liquid from flowing out from the position where the trigger piston 12 extends out of the sleeve 11 when passing through the first liquid passage 51.

[0064] The third sealing part 126 is arranged on the trigger piston 12 away from the left side of the first sealing part 121. The second liquid passage 52 is formed by the space surrounded by the inner wall of the sleeve 11 left side, the first sealing part 121, the outer wall of the trigger piston 12 and the third sealing part 126. Taking the first sealing part 121, the third sealing part 126 and the trigger piston 12 as cylindrical shape for example, the diameters of the first sealing part 121 and the third sealing part 126 are greater than the diameter of the trigger piston 12 and closely adhere to the inner wall of the sleeve 11, thereby forming the second liquid passage 52, facilitating the high-pressure liquid to pass through, and more optimally avoiding the high-pressure liquid from flowing out from the position where the trigger piston 12 extends out of the sleeve 11 when passing through the second liquid passage 52.

[0065] The high-pressure fire extinguishing liquid stored in the pressure storage device 2 can be high-pressure carbon dioxide liquid, high-pressure liquid nitrogen or high-pressure gas and water mixture, etc. Sixth embodiment

[0066] As shown in the accompanying drawings Figure 4As shown, an automatic explosion isolation device, on the basis of the first embodiment, the pressure storage and liquid storage device 2 at least two, the spraying device 4 in the trigger piston left and right sides at least two each. The pressure storage and liquid storage device 2 through tee 6 parallel, respectively provided with check valve 7 and stop valve 8 on each parallel connection pipeline, the spraying device 4 through tee 6 parallel. Multiple pressure storage and liquid storage device 2 parallel design, increase the number of fire extinguishing medium, corresponding to increase the fire extinguishing time, multiple spraying device parallel design, increase the range of fire. In the pressure storage and liquid storage device 2 and the first into the hole 111 connection pipeline is provided with check valve 7, can prevent the backflow of high pressure liquid, set stop valve 8 can control the pressure storage and liquid storage device 2 in the high pressure liquid in the spraying state or prohibit the spraying state, for example, when the transport closed stop valve 8 can effectively prevent the first into the hole 111 and the second into the hole 122 communication, resulting in high pressure liquid spray, or in the pressure storage and liquid storage device 2 when the pressure liquid, avoid the trigger piston 12 caused by the first seal part 121 movement, make the first into the hole 111 and the second into the hole 122 communication, resulting in high pressure liquid spray.

[0067] The second, third embodiment is omitted in the working state structure diagram, but the working principle can refer to the first embodiment.

[0068] The fifth, sixth embodiment is omitted in the working state structure diagram, but the working principle can refer to the fourth embodiment.

[0069] The spraying device 4 and the shock wave receiver 31 for prior art.

[0070] The piston 12 and sleeve 11 inside the trigger device 1 connection has been sealed with sealing ring 9 or sealing pad and other sealing materials, in the standby state will not have high pressure liquid seepage, also will not from the spraying device 4 outside the position of the spray.

[0071] The pressure storage and liquid storage device 2 and the first into the hole 111 can be communicated through the pipeline.

[0072] The above description of the disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic explosion-proof device, comprising a trigger device (1), a pressure and liquid storage device (2), a shock wave receiving and sensing device (3) and a spraying device (4), characterized in that: The trigger device (1) comprises a sleeve (11) and a trigger piston (12) arranged in the sleeve (11); a first inlet hole (111) is provided on the sleeve (11); the pressure and liquid storage device (2) is in communication with the first inlet hole (111); the trigger piston (12) is a hollow structure, and a second inlet hole (122) in communication with the hollow structure is provided on the trigger piston (12); a first sealing portion (121) capable of blocking the first inlet hole (111) is provided on the trigger piston (12); one end of the trigger piston (12) is connected to the shock wave receiving and sensing device (3); and the hollow structure of the trigger piston (12) is in communication with the spraying device (4).

2. The automatic explosion-proof device according to claim 1, characterized in that: The other end of the trigger piston (12) is connected to the shock wave receiving sensing device (3). The first sealing portion (121) divides the hollow structure of the trigger piston (12) into a left chamber (125) and a right chamber (124). The second inlet holes (122) are provided on the left and right sides of the first sealing portion (121), respectively, and are connected to the left chamber (125) and the right chamber (124). The left chamber (125) and the right chamber (124) are respectively connected to the corresponding spraying device (4).

3. The automatic explosion-proof device according to claim 1, characterized in that: A liquid passage (5) is provided in the sleeve (11).

4. The automatic explosion-proof device according to claim 3, characterized in that: The liquid passage (5) is composed of a space enclosed by the inner wall of the sleeve (11), the first sealing portion (121), and the outer wall of the trigger piston (12).

5. The automatic explosion-proof device according to claim 3, characterized in that: A second sealing portion (123) is provided on the trigger piston (12) away from the right side of the first sealing portion (121), and the liquid passage (5) is composed of a space enclosed by the right inner wall of the sleeve (11), the first sealing portion (121), the outer wall of the trigger piston (12), and the second sealing portion (123).

6. The automatic explosion-proof device according to claim 2, characterized in that: A second liquid passage (52) and a first liquid passage (51) are respectively provided on the left and right sides of the first sealing portion (121). The first liquid passage (51) is composed of a space enclosed by the right inner wall of the sleeve (11), the first sealing portion (121), and the outer wall of the trigger piston (12). The second liquid passage (52) is composed of a space enclosed by the left inner wall of the sleeve (11), the first sealing portion (121), and the outer wall of the trigger piston (12).

7. The automatic explosion-proof device according to claim 6, characterized in that: A third sealing portion (126) and a second sealing portion (123) are provided on both sides of the trigger piston (12) away from the first sealing portion (121). The first liquid passage (51) is composed of a space surrounded by the right inner wall of the sleeve (11), the first sealing portion (121), the outer wall of the trigger piston (12), and the second sealing portion (123). The second liquid passage (52) is composed of a space surrounded by the left inner wall of the sleeve (11), the first sealing portion (121), the outer wall of the trigger piston (12), and the third sealing portion (126).

8. An automatic explosion-proof device according to any one of claims 1 to 7, characterized in that: The shock wave receiving sensing device (3) is composed of a shock wave receiver (31) and is connected to the trigger piston (12).

9. The automatic explosion-proof device according to any one of claims 1 to 7, characterized in that: The shock wave receiving sensing device (3) is composed of a shock wave receiver (31) and a push rod (32). The shock wave receiver (31) is arranged on the push rod (32). The push rod (32) is a hollow structure. The trigger piston (12) is connected to the spraying device (4) through the push rod (32).

10. An automatic explosion-proof device according to any one of claims 1 to 7, characterized in that: The high-pressure fire extinguishing liquid stored in the pressure and liquid storage device (2) is a mixture of high-pressure gas and water, or high-pressure liquid nitrogen, or high-pressure carbon dioxide liquid.

11. The automatic explosion-proof device according to any one of claims 1 to 7, characterized in that: There are at least two pressure and liquid storage devices (2), and at least two spraying devices (4) are located on one side of the trigger piston (12) and are in communication with the hollow structure of the trigger piston (12).

12. The automatic explosion-proof device according to claim 11, characterized in that: The pressure and liquid storage devices (2) are connected in parallel via a tee (6), and a check valve (7) and a stop valve (8) are provided on each parallel connection pipeline. The spraying devices (4) are connected in parallel via a tee (6).

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