Small perfluorohexanone fire extinguishing tank

Abstract

This invention belongs to the technical field of fire extinguishing equipment, specifically relating to a small perfluorohexanone fire extinguishing canister, including a canister body and a valve seat installed at the canister opening. It also includes a thermal release valve, a safety valve, a filling valve, and an interface valve, spaced apart on the valve seat. The valve seat has an annular end away from the canister body, with a splash plate welded along the central axis of the thermal release valve at the annular portion. The thermal release valve automatically ruptures when heated to a set temperature range, connecting the canister body and the valve seat to release the extinguishing agent. The bottom of the canister body, along its central axis, is sequentially equipped with a rubber elastic cover, a first heat-conducting column, an elastic support base, and a second heat-conducting column. The rubber elastic cover separates the interior of the canister into two functional chambers. This invention employs a modular mechanical structure to prevent fire damage to the external power supply from causing extinguishing failure and to reduce the amount of extinguishing agent leakage due to heat, thus maintaining the fire extinguishing performance of the canister at a normal level.

Description

Technical Field

[0001] This invention belongs to the field of fire extinguishing equipment technology, specifically relating to a small perfluorohexanone fire extinguishing canister. Background Technology

[0002] Fire extinguishing equipment is generally placed in areas such as fire cabinets in the form of canisters containing extinguishing agents. Depending on the type of extinguishing agent, it is classified into gas extinguishing canisters, dry powder extinguishing canisters, and liquid extinguishing canisters. Gas extinguishing canisters can be filled with heptafluoropropane, perfluorohexanone, etc., and the glass part at the gas outlet automatically breaks upon reaching a certain temperature, thus automatically releasing the extinguishing agent.

[0003] Existing perfluorohexanone fire extinguishers often have a built-in motor drive structure. For example, the retrieved Chinese invention patent application (publication number: CN116251323A) discloses a non-pressurized perfluorohexanone fire extinguishing device. The motor provides power for the movement of the adjusting plate, causing the two inner chambers to open alternately. The perfluorohexanone in the first inner chamber is used to extinguish the fire, while the other part of the perfluorohexanone is temporarily stored in the second inner chamber, reducing the waste of perfluorohexanone.

[0004] In practical use, perfluorohexanone fire extinguishers still have the following aspects that urgently need improvement: 1. Fire extinguishing canisters rely on an electric motor to release perfluorohexanone. If the power supply is damaged by a fire, the extinguishing agent inside cannot be sprayed out, resulting in the complete failure of the fire extinguishing function.

[0005] 2. Fire extinguishing canisters are typically equipped with a safety valve and a heat-sensitive release valve. When the external temperature reaches a certain range, the pressure inside the canister increases, causing the safety valve to open. However, if the heat-sensitive release valve fails to open in time, partial leakage of the extinguishing agent occurs. As the number of leaks increases, the fire extinguishing performance of the canister will be severely reduced. Summary of the Invention

[0006] The purpose of this invention is to provide a small perfluorohexanone fire extinguishing canister that can adopt a modular mechanical structure to avoid fire damage to the external power supply leading to fire extinguishing failure, and to reduce the amount of fire extinguishing agent leakage due to heat, so as to maintain the fire extinguishing performance of the canister at a normal level.

[0007] The specific technical solution adopted by this invention is as follows: A small perfluorohexanone fire extinguishing canister includes a canister body and a valve seat installed at the canister opening, and further includes: Thermal release valve, safety valve, filling valve and interface valve are installed at intervals on the valve seat; The valve seat is annular at the end away from the tank, and a splashing disc is welded to the annular part along the central axis of the thermal release valve. The thermal release valve automatically breaks when heated to a set temperature range, making the tank and the valve seat conductive, and releasing the extinguishing agent.

[0008] As an optional solution, the bottom of the tank is provided with a rubber elastic cover, a first heat-conducting column, an elastic support base and a second heat-conducting column in sequence along its central axis. The rubber elastic cover separates the interior of the tank into two functional chambers. One functional chamber is used to store the extinguishing agent, and the other functional chamber is used to house the first heat-conducting column, the elastic support base, and the second heat-conducting column. Wherein, when the pressure of the extinguishing agent in the functional chamber reaches the set pressure range under the pressure of the extinguishing agent, the rubber elastic cover deforms along the central axis of the second heat-conducting column under the squeezing force of the extinguishing agent, so as to reduce the pressure of the extinguishing agent in the heated expansion state and push the first heat-conducting column to contact the second heat-conducting column, so that the extinguishing agent in the functional chamber loses heat to the outside along the first heat-conducting column and the second heat-conducting column.

[0009] As an alternative, the rubber elastic cover is annular with a central hole, the top of the first heat-conducting column is grooved to fit the central hole of the rubber elastic cover, and the bottom is cylindrical extending along the central axis of the central hole of the rubber elastic cover. The multiple elastic support seats surround the first heat-conducting column and support the rubber elastic cover, so that the middle of the rubber elastic cover pushes the first heat-conducting column along the central axis of the second heat-conducting column under the extrusion pressure of the fire extinguishing agent until the first heat-conducting column contacts the second heat-conducting column.

[0010] As an alternative, one end of the second heat-conducting column extends out of the tank and is sequentially welded with a second annular flange and heat dissipation fins along its radial direction, with spokes welded to the outer side of the heat dissipation fins; The second annular flange, heat dissipation fins, and spokes are in contact with air outside the tank, creating a temperature difference between the second heat-conducting column and the first heat-conducting column. The heat of the extinguishing agent inside the tank can be transferred to the second heat-conducting column along the first heat-conducting column under the action of the temperature gradient.

[0011] As an alternative, a third annular flange is fitted on the first heat-conducting column at the position outside the tank body. A support rod is welded radially to the outside of the third annular flange. A second groove is provided on the support rod and volatile heat-absorbing gel is filled inside the second groove. When the temperature of the second heat-conducting column rises, a temperature difference is generated between it and the third annular flange, causing the second heat-conducting column to transfer heat to the third annular flange and the support rod under the action of the temperature gradient. When the volatile heat-absorbing gel is heated and evaporates, it carries away the heat on the support rod.

[0012] As an optional solution, a concave tube is installed through the bottom of the tank and sleeved outside the second heat-conducting column. An elastic expansion member is welded inside the concave tube along the axial direction of the second heat-conducting column, and a sealing ring is bonded to the top of the second heat-conducting column. The second heat-conducting column compresses the elastic expansion member under the thrust of the first heat-conducting column until the sealing ring seals the gap between the second heat-conducting column and the concave tube.

[0013] As an alternative, the concave tube has two stepped grooves inside, one of which is used to accommodate the elastic expansion member, and the other stepped groove is aligned with the sealing ring along the axial direction of the first heat-conducting column. Wherein, the length dimension of the elastic telescopic member in its extended state is greater than the sum of the depth dimensions of the two stepped grooves.

[0014] As an optional solution, the elastic support base has a first groove on the side near the first heat-conducting column, and a second hinge joint, a swing arm and the first hinge joint are sequentially connected between the first groove and the first heat-conducting column along the radial direction of the first heat-conducting column. The second hinge joint, the swing arm, and the first hinge joint provide support along the radial direction of the first heat-conducting column when the first heat-conducting column moves, preventing the first heat-conducting column from tilting.

[0015] As an alternative, the volatile endothermic gel includes water, ethanol, and menthol, and bamboo charcoal fibers for blocking the flow of the volatile endothermic gel are placed inside the second groove.

[0016] As an alternative, the functional chamber is provided with a first annular flange connected to a concave tube, and the first heat-conducting column passes through the first annular flange and is aligned with the second groove.

[0017] The technical effects achieved by this invention are as follows: This invention provides a modular small fire extinguishing canister, which is made of stainless steel and modularly composed of a valve seat, safety valve, filling valve and interface valve. The overall structure is compact and small in size, which is convenient for deployment in confined spaces. Since the whole is a mechanical structure, the small fire extinguishing canister avoids fire damage to the external power supply, which would cause the fire extinguishing to fail.

[0018] This invention provides a small fire extinguishing canister with automatic heat dissipation and pressure relief. When the extinguishing agent inside the canister expands due to heat, it is depressurized by a compressed rubber elastic cover. A movable heat-conducting column and heat dissipation fins transfer the heat of the extinguishing agent to the outside air. Furthermore, the heat dissipation rate of the extinguishing agent is increased by utilizing the heat absorption effect of a volatile heat-absorbing gel, thereby reducing the amount of extinguishing agent leakage due to heat and maintaining the fire extinguishing performance of the canister at a normal level. After the extinguishing agent inside the small fire extinguishing canister dissipates heat to the normal operating temperature range, the heat-conducting column and heat dissipation fins automatically retract, sealing the volatile heat-absorbing gel and reducing the waste of the volatile heat-absorbing gel. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a perfluorohexanone small fire extinguishing canister according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of a perfluorohexanone small fire extinguishing canister according to Embodiment 2 of the present invention; Figure 3 This is a cross-sectional view of the tank in Embodiment 2 of the present invention; Figure 4 This is the invention Figure 3 A sectional view of a local structure in the middle; Figure 5 This is the invention Figure 3 Exploded view of a local structure in the middle; Figure 6 This is the invention Figure 5 Schematic diagram of the structure of the first heat-conducting column; Figure 7 This is the invention Figure 5 Bottom view of the third annular flange and support rod; Figure 8 This is the invention Figure 5 Top view of the second annular flange and heat dissipation fins.

[0020] The attached diagram lists the components represented by each number as follows: 1. Tank body; 2. Valve seat; 3. Thermal release valve; 4. Splash plate; 5. Safety valve; 6. Filling valve; 7. Interface valve; 8. Pressure gauge; 9. Rubber elastic cover; 10. First heat-conducting column; 11. Elastic support seat; 12. First hinge joint; 13. Swing arm; 14. Second hinge joint; 15. First groove; 16. First annular flange; 17. Second heat-conducting column; 18. Concave tube; 19. Elastic telescopic component; 20. Sealing ring; 21. Second annular flange; 22. Heat dissipation fins; 23. Spokes; 24. Third annular flange; 25. Support rod; 26. Second groove; 27. Fourth annular flange. Detailed Implementation

[0021] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0022] Example 1: like Figure 1 As shown, a small perfluorohexanone fire extinguishing canister includes a canister body 1 and a valve seat 2 installed at the canister opening of the canister body 1. The valve seat 2 is welded with a splash plate 4, a safety valve 5, a filling valve 6, and an interface valve 7. The end of the valve seat 2 away from the canister body 1 is annular, and a heat-sensitive release valve 3 is inserted along the central axis of the annular section. The heat-sensitive release valve 3 automatically ruptures when heated to a set temperature range, making the canister body 1 and the valve seat 2 conductive, and releasing the fire extinguishing agent.

[0023] See attached document Figure 1 The tank body 1 is filled with perfluorohexanone, nitrogen and ethylene glycol as extinguishing agents along the filling valve 6. After filling, the pressure gauge 8 threaded on the interface valve 7 is used to monitor the pressure of the extinguishing agent inside the tank body 1. When the pressure of the extinguishing agent reaches 1.6MPa to 2.5MPa, the tank body 1 and valve seat 2 can be put into normal use.

[0024] During installation, a small fire extinguishing tank is modularly assembled using a stainless steel tank body 1, valve seat 2, safety valve 5, filling valve 6, and interface valve 7. The overall structure is compact and small in size, making it easy to deploy in confined spaces. Because the whole structure is mechanical, the small fire extinguishing tank avoids fire damage to the external power supply, which could lead to fire extinguishing failure.

[0025] When the internal pressure of tank 1 exceeds the upper pressure limit of 2.5MPa, the expanding extinguishing agent opens the safety valve 5 to release pressure and prevent tank 1 from bursting due to excessive internal pressure. The safety valve 5 will automatically close when the internal pressure of tank 1 is lower than the upper pressure limit of 2.5MPa, thus achieving overpressure protection.

[0026] When put into use, the heat-sensitive release valve 3 is filled with organic solutions with high expansion coefficients such as kerosene and ether, and a preset fire detection temperature threshold (e.g., 68°C) is provided. No external power supply or manual operation is required. When a fire occurs and the ambient temperature reaches the threshold, the glass tube of the heat-sensitive release valve 3 breaks, automatically releasing the extinguishing agent to achieve unattended automatic fire extinguishing. It responds promptly and extinguishes fires efficiently. The extinguishing agent is diverted along the edge of the splash plate 4 to increase the extinguishing agent radiation area.

[0027] During maintenance, staff can briefly open the filling valve 6 to perform internal pressure testing, airtightness testing, and fire extinguishing agent discharge and replacement in tank 1 without disassembling the core structure of the tank, simplifying the operation and maintenance process and reducing the difficulty of maintenance.

[0028] The working principle of this invention is as follows: When put into use, the inside of the heat-sensitive release valve 3 is filled with organic solutions with high expansion coefficients such as kerosene and ether, and a preset fire sensing temperature threshold (e.g., 68°C) is provided. No external power supply or manual operation is required. When a fire occurs and the ambient temperature reaches the threshold, the glass tube of the heat-sensitive release valve 3 breaks, automatically releasing the extinguishing agent, realizing unattended automatic fire extinguishing, with timely response and high fire extinguishing efficiency. The extinguishing agent is diverted along the edge of the splash plate 4.

[0029] Example 2: To reduce the waste of extinguishing agent caused by leakage of safety valve 5, this solution improves the perfluorohexanone miniature fire extinguishing canister of Example 1.

[0030] like Figures 2-8As shown, a perfluorohexanone small fire extinguishing canister is basically the same as that in Example 1, except that: a rubber elastic cover 9, a first heat-conducting column 10, an elastic support seat 11 and a second heat-conducting column 17 are arranged sequentially along the central axis of the bottom of the canister 1. During installation, the lower edge of the rubber elastic cover 9 is welded to the inner wall of the canister 1, the top of the first heat-conducting column 10 is welded to the middle of the rubber elastic cover 9, the elastic support seat 11 is in the shape of an inverted "V" and the bottom of the inverted "V" is welded to the inner wall of the canister 1, and the second heat-conducting column 17 penetrates the bottom of the canister 1 along the axial direction of the first heat-conducting column 10. The rubber elastic cover 9 separates the interior of the tank 1 to form two functional chambers. One functional chamber is used to store the extinguishing agent, and the other functional chamber is used to set up the first heat-conducting column 10, the elastic support seat 11, and the second heat-conducting column 17. When in use, the pressure of the extinguishing agent in the functional chamber under thermal expansion reaches the set pressure range (lower than the pressure required to open the safety valve 5). Under the squeezing force of the extinguishing agent, the rubber elastic cover 9 deforms along the central axis of the second heat-conducting column 17 and squeezes the elastic support seat 11 to reduce the pressure of the extinguishing agent under thermal expansion, reduce the extinguishing agent leakage from the safety valve 5, and push the first heat-conducting column 10 to contact the second heat-conducting column 17, so that the extinguishing agent in the functional chamber dissipates heat to the outside along the first heat-conducting column 10 and the second heat-conducting column 17, thereby reducing the degree of thermal expansion of the extinguishing agent. When the extinguishing agent cools down and its pressure is lower than the set pressure range, the elastic potential energy stored in the elastic support seat 11 is released, causing the elastic support seat 11 to extend toward the functional chamber where the extinguishing agent is located and expand the rubber elastic cover 9. The rubber elastic cover 9 drives the first heat-conducting column 10 away from the second heat-conducting column 17 until it is reset, leaving a buffer space for the subsequent thermal expansion of the extinguishing agent.

[0031] See attached document Figure 4 , Figure 5 and Figure 6 The rubber elastic cover 9 is an annular shape with a round hole in the middle. The top of the first heat-conducting column 10 is a groove that fits the round hole of the rubber elastic cover 9, and the bottom is a cylinder extending along the central axis of the round hole of the rubber elastic cover 9. Before installation, the middle of the rubber elastic cover 9 is tightly bonded to the groove at the top of the first heat-conducting column 10 so that it can be installed as a whole into the inside of the tank 1. Among them, four elastic support seats 11 surround the first heat-conducting column 10 and support the rubber elastic cover 9. Under the extrusion pressure of the extinguishing agent, the middle of the rubber elastic cover 9 pushes the first heat-conducting column 10 along the central axis of the second heat-conducting column 17 until the first heat-conducting column 10 contacts the second heat-conducting column 17. Since both the first heat-conducting column 10 and the second heat-conducting column 17 are made of copper, their thermal conductivity is greater than that of the tank 1 based on stainless steel. When the extinguishing agent is heated, it can transfer heat to both of them.

[0032] See attached document Figure 3 , Figure 4 and Figure 5 The functional chamber is provided with a first annular flange 16 connected to the concave tube 18. The first heat-conducting column 10 passes through the first annular flange 16 and is aligned with the second groove 26. When the first heat-conducting column 10 moves, the first annular flange 16 straightens the first heat-conducting column 10 so that the first heat-conducting column 10 always remains in a positive position with the second heat-conducting column 17.

[0033] See attached document Figure 3 , Figure 4 and Figure 5 The elastic support base 11 has a first groove 15 on one side near the first heat-conducting column 10. The first groove 15 and the first heat-conducting column 10 are connected in sequence along the radial direction of the first heat-conducting column 10 by a second hinge joint 14, a swing arm 13 and a first hinge joint 12. The end of the first hinge joint 12 away from the swing arm 13 is welded to the lower surface of the top of the first heat-conducting column 10, and the end of the second hinge joint 14 away from the swing arm 13 is welded to the inner side of the first groove 15. When the first heat-conducting column 10 moves, the second hinge joint 14, the swing arm 13 and the first hinge joint 12 provide support along the radial direction of the first heat-conducting column 10 as the first heat-conducting column 10 moves, providing a limiting effect for the first heat-conducting column 10, preventing the first heat-conducting column 10 from tilting, and ensuring that the first heat-conducting column 10 and the second heat-conducting column 17 are aligned during the use of the small fire extinguishing tank.

[0034] See attached document Figure 4 , Figure 5 and Figure 8 One end of the second heat-conducting column 17 extends out of the interior of the tank 1 and is sequentially welded with a second annular flange 21 and heat dissipation fins 22 along its radial direction. Spokes 23 are welded to the outer side of the heat dissipation fins 22. See [reference needed] Figure 8 The number of heat dissipation fins 22 is set to 6. One end of each heat dissipation fin 22 is welded to the outside of the second annular flange 21. Spokes 23 are welded between the sides of two adjacent heat dissipation fins 22 that are close to each other. When put into use, the second annular flange 21, heat dissipation fins 22, and spokes 23 are in contact with the air outside the tank body 1, creating a temperature difference between the second heat-conducting column 17 and the first heat-conducting column 10. Under the action of the temperature gradient, the heat of the extinguishing agent inside the tank body 1 can be transferred to the second heat-conducting column 17 along the first heat-conducting column 10. When the second heat-conducting column 17 comes into contact with the air, it dissipates heat into the air. Furthermore, the heat dissipation fins 22 and spokes 23 increase the contact area between the second heat-conducting column 17 and the air. Compared with the second heat-conducting column 17 dissipating heat alone, more heat is dissipated per unit time, which can improve the cooling rate of the extinguishing agent and thus quickly restore the thermal expansion pressure of the extinguishing agent to the normal operating pressure.

[0035] See attached document Figure 4 , Figure 5 and Figure 7The first heat-conducting column 10 is fitted with a third annular flange 24 made of copper metal on the outside of the tank body 1. A support rod 25 made of copper metal is welded radially to the outside of the third annular flange 24. There are 6 support rods 25. Each support rod 25 is provided with a second groove 26 and volatile heat-absorbing gel filling the second groove 26. When the first heat-conducting column 10 and the second heat-conducting column 17 are not in contact, the first heat-conducting column 10 drives the third annular flange 24 and the support rod 25 to move in the positive direction along its axial direction until the heat dissipation fins 22 are close to the support rods 25, so that the heat dissipation fins 22 cover the second grooves 26 to seal the volatile heat-absorbing gel and avoid the volatile heat-absorbing gel from evaporating and being wasted. The volatile heat-absorbing gel includes water, ethanol, and menthol in a preset ratio. After mixing the water, ethanol, and menthol, the mixture is stirred into a gel. Bamboo charcoal fiber for blocking the flow of the volatile heat-absorbing gel is placed inside the second groove 26. When the first heat-conducting column 10 squeezes and pushes the second heat-conducting column 17, the first heat-conducting column 10 drives the third annular flange 24 and the support rod 25 to move in the opposite direction along their axial direction until the heat dissipation fins 22 disengage from the support rod 25, causing the second groove 26 to open. At the same time, when the temperature of the second heat-conducting column 17 rises, a temperature difference is generated between it and the third annular flange 24, so that the second heat-conducting column 17 transfers heat to the third annular flange 24 and the support rod 25 under the action of the temperature gradient. When the volatile heat-absorbing gel is heated and evaporates, it takes away the heat on the support rod 25, thereby increasing the heat dissipation rate of the extinguishing agent.

[0036] As an optional embodiment, five second grooves 26 are configured, each filled with volatile heat-absorbing gel. As the water, ethanol, and menthol in the volatile heat-absorbing gel slowly evaporate, staff regularly inspect and replenish the volatile heat-absorbing gel in the small fire extinguishing canister.

[0037] As an optional embodiment, the support rod 25 is integrally milled and formed with a fourth annular flange 27. During installation, the workers pass screws through the fourth annular flange 27 to fix the support rod 25 to the steel frame of the fire safety area, thereby improving the stability of the small fire extinguisher during installation.

[0038] See attached document Figure 3 , Figure 4 and Figure 5A concave tube 18 is welded through the bottom of the tank body 1 and sleeved on the outside of the second heat-conducting column 17. An elastic expansion member 19 is welded inside the concave tube 18 along the axial direction of the second heat-conducting column 17. A sealing ring 20 is bonded to the top of the second heat-conducting column 17. During installation, one end of the elastic expansion member 19 is welded to the inner wall of the concave tube 18, and the other end is welded to the lower surface of the top of the second heat-conducting column 17. Under the action of its own elastic potential energy, the elastic expansion member 19 pushes the second heat-conducting column 17, so that one end of the second heat-conducting column 17 extends from the concave tube 18 into the inside of the tank body 1, and the other end drives the third annular flange 24 and the support rod 25 to move in the positive direction along its axial direction until the heat dissipation fins 22 are tightly attached to the support rod 25, so that the heat dissipation fins 22 cover the second groove 26. When the first heat-conducting column 10 pushes the second heat-conducting column 17 in the opposite direction, the second heat-conducting column 17 compresses the elastic telescopic member 19 under the thrust of the first heat-conducting column 10 until the sealing ring 20 seals the gap between the second heat-conducting column 17 and the concave tube 18, opening the second groove 26 while ensuring the airtightness of the concave tube 18.

[0039] See attached document Figure 3 , Figure 4 and Figure 6 The concave tube 18 is pre-machined with two stepped grooves by milling. One stepped groove is used to accommodate the elastic expansion member 19, and the other stepped groove is directly opposite the sealing ring 20 along the axial direction of the first heat-conducting column 10. When the first heat-conducting column 10 squeezes and pushes the second heat-conducting column 17, the second heat-conducting column 17 squeezes the elastic expansion member 19 into one stepped groove and drives the sealing ring 20 into the other stepped groove. Meanwhile, the length of the elastic expansion member 19 in its extended state is greater than the sum of the depths of the two stepped grooves, giving the elastic expansion member 19 sufficient elastic potential energy to push the second heat-conducting column 17 and drive the third annular flange 24 and the support rod 25 to move along their axial direction until the heat dissipation fins 22 are in close contact with the support rod 25.

[0040] The working principle of this invention is as follows: When in use, the pressure of the extinguishing agent in the functional chamber under thermal expansion reaches the set pressure range and is lower than the pressure required to open the safety valve 5. Under the extrusion pressure of the extinguishing agent, the rubber elastic cover 9 deforms along the central axis of the second heat-conducting column 17 and squeezes the elastic support seat 11 to reduce the pressure of the extinguishing agent under thermal expansion and reduce the extinguishing agent leakage from the safety valve 5.

[0041] Simultaneously, the first heat-conducting column 10 squeezes and pushes the second heat-conducting column 17, and drives the third annular flange 24 and the support rod 25 to move in the opposite direction along their axial direction, so that the extinguishing agent in the functional chamber loses heat to the outside along the first heat-conducting column 10 and the second heat-conducting column 17 until the heat dissipation fins 22 detach from the support rod 25. The heat of the extinguishing agent inside the tank 1 is transferred to the second heat-conducting column 17 along the first heat-conducting column 10 under the action of the temperature gradient. When the second heat-conducting column 17 comes into contact with the air, it dissipates heat into the air, and the heat dissipation fins 22 and spokes 23 increase the contact area between the second heat-conducting column 17 and the air.

[0042] When the temperature of the second heat-conducting column 17 rises, a temperature difference is generated between it and the third annular flange 24, causing the second heat-conducting column 17 to transfer heat to the third annular flange 24 and the support rod 25 under the action of the temperature gradient. The volatile heat-absorbing gel evaporates when heated and carries away the heat on the support rod 25.

[0043] When the extinguishing agent cools down and its pressure is lower than the set pressure range, the elastic potential energy stored in the elastic support seat 11 is released, causing the elastic support seat 11 to extend toward the functional chamber where the extinguishing agent is located and expand the rubber elastic cover 9. The rubber elastic cover 9 drives the first heat-conducting column 10 away from the second heat-conducting column 17 until it is reset, leaving a buffer space for the subsequent thermal expansion of the extinguishing agent.

[0044] The above description is merely an optional embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A small fire extinguishing tank of perfluorohexanone comprising a tank body (1) and a valve seat (2) mounted to the tank mouth of the tank body (1), characterized in that, Also includes: The thermal release valve (3), safety valve (5), filling valve (6) and interface valve (7) are installed at intervals on the valve seat (2); The valve seat (2) is annular at one end away from the tank (1), and a splashing disk (4) is welded along the central axis of the thermal release valve (3) at the annular end. The thermal release valve (3) automatically breaks after being heated to the set temperature range, so that the tank (1) and the valve seat (2) are connected and the extinguishing agent can be released.

2. The perfluorohexanone miniature fire extinguishing canister according to claim 1, characterized in that: The bottom of the tank (1) is provided with a rubber elastic cover (9), a first heat-conducting column (10), an elastic support seat (11), and a second heat-conducting column (17) in sequence along its central axis. The rubber elastic cover (9) separates the interior of the tank (1) to form two functional chambers. One functional chamber is used to store the extinguishing agent, and the other functional chamber is used to house the first heat-conducting column (10), the elastic support seat (11), and the second heat-conducting column (17). When the pressure of the extinguishing agent in the functional chamber reaches the set pressure range under the extrusion pressure of the extinguishing agent, the rubber elastic cover (9) deforms along the central axis of the second heat-conducting column (17) under the extrusion pressure of the extinguishing agent to reduce the pressure of the extinguishing agent under the extrusion pressure and push the first heat-conducting column (10) to contact the second heat-conducting column (17), so that the extinguishing agent in the functional chamber loses heat to the outside along the first heat-conducting column (10) and the second heat-conducting column (17).

3. A small perfluorohexanone fire extinguishing canister according to claim 2, characterized in that: The rubber elastic cover (9) is an annular shape with a central hole. The top of the first heat-conducting column (10) is a groove that fits the central hole of the rubber elastic cover (9), and the bottom is a cylinder that extends along the central axis of the central hole of the rubber elastic cover (9). Among them, multiple elastic support seats (11) surround the first heat-conducting column (10) and support the rubber elastic cover (9), so that the middle of the rubber elastic cover (9) pushes the first heat-conducting column (10) along the central axis of the second heat-conducting column (17) under the extrusion pressure of the fire extinguishing agent until the first heat-conducting column (10) contacts the second heat-conducting column (17).

4. A small perfluorohexanone fire extinguishing canister according to claim 2, characterized in that: One end of the second heat-conducting column (17) extends out of the interior of the tank (1) and is sequentially welded with a second annular flange (21) and heat dissipation fins (22) along its radial direction. Spokes (23) are welded to the outside of the heat dissipation fins (22). The second annular flange (21), heat dissipation fins (22) and spokes (23) are in contact with air outside the tank (1), causing a temperature difference between the second heat-conducting column (17) and the first heat-conducting column (10). The heat of the extinguishing agent inside the tank (1) can be transferred to the second heat-conducting column (17) along the first heat-conducting column (10) under the action of the temperature gradient.

5. A small perfluorohexanone fire extinguishing canister according to claim 2, characterized in that: The first heat-conducting column (10) is fitted with a third annular flange (24) at the position outside the tank (1). A support rod (25) is welded radially to the outside of the third annular flange (24). A second groove (26) is provided on the support rod (25) and volatile heat-absorbing gel is filled inside the second groove (26). When the temperature of the second heat-conducting column (17) rises, a temperature difference is generated between it and the third annular flange (24), so that the second heat-conducting column (17) transfers heat to the third annular flange (24) and the support rod (25) under the action of the temperature gradient. When the volatile heat-absorbing gel is heated and evaporates, it takes away the heat on the support rod (25).

6. A small perfluorohexanone fire extinguishing canister according to claim 2, characterized in that: The bottom of the tank (1) is fitted with a concave tube (18) that is sleeved on the outside of the second heat-conducting column (17). An elastic expansion member (19) is welded inside the concave tube (18) along the axial direction of the second heat-conducting column (17). A sealing ring (20) is bonded to the top of the second heat-conducting column (17). The second heat-conducting column (17) compresses the elastic telescopic member (19) under the thrust of the first heat-conducting column (10) until the sealing ring (20) seals the gap between the second heat-conducting column (17) and the concave tube (18).

7. A small perfluorohexanone fire extinguishing canister according to claim 6, characterized in that: The concave tube (18) has two stepped grooves inside. One stepped groove is used to accommodate the elastic expansion member (19), and the other stepped groove is directly opposite the sealing ring (20) along the axial direction of the first heat-conducting column (10). Wherein, the length dimension of the elastic telescopic member (19) in the extended state is greater than the sum of the depth dimensions of the two stepped grooves.

8. A small perfluorohexanone fire extinguishing canister according to claim 2, characterized in that: The elastic support base (11) has a first groove (15) on the side near the first heat-conducting column (10). The first groove (15) and the first heat-conducting column (10) are connected in sequence along the radial direction of the first heat-conducting column (10) by a second hinge joint (14), a swing arm (13) and a first hinge joint (12). The second hinge joint (14), the swing arm (13) and the first hinge joint (12) provide support along the radial direction of the first heat-conducting column (10) when the first heat-conducting column (10) moves, preventing the first heat-conducting column (10) from tilting.

9. A small perfluorohexanone fire extinguishing canister according to claim 5, characterized in that: The volatile heat-absorbing gel includes water, ethanol, and menthol, and bamboo charcoal fiber for blocking the flow of the volatile heat-absorbing gel is placed inside the second groove (26).

10. A small perfluorohexanone fire extinguishing canister according to claim 6, characterized in that: The functional chamber is provided with a first annular flange (16) connected to the concave tube (18), and the first heat-conducting column (10) passes through the first annular flange (16) and is aligned with the second groove (26).

Images