Low-temperature fire extinguishing system

Abstract

This invention provides a cryogenic fire extinguishing system. In this system, a pressure storage device includes a shell and a pressure tank located within the shell. The shell is provided with a gas inlet channel, a first passage, and a second passage. The first passage is connected to the fire extinguishing tank, and the second passage is connected to the fire extinguishing pipeline. When the gas inlet channel is connected to the fire extinguishing pipeline and the fire extinguishing agent outlet of the fire extinguishing tank is connected to the fire extinguishing pipeline, the pressure tank is in an open state. When the pressure tank is in the open state, it is connected to the first passage and the first connecting pipeline, allowing the high-pressure gas inside the pressure tank to enter the fire extinguishing tank and provide auxiliary spray power. Furthermore, the pressure tank is connected to the second passage and the second connecting pipeline, allowing the high-pressure gas inside the pressure tank to enter the fire extinguishing pipeline and act as a breaking force for the viscous fire extinguishing agent at cryogenic temperatures. This solves the problem of insufficient spray power caused by pressure reduction in pressurized fire extinguishing tanks at extremely low temperatures.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing equipment technology, and in particular to a low-temperature fire extinguishing system. Background Technology

[0002] Most commercially available fire extinguishing systems designed for use in ultra-low temperature environments of -50°C and below rely on electrical signal control (such as temperature-sensing cables and infrared sensors), requiring an external power source to ensure proper system activation. Severe damage leading to a power outage will cause system failure. Current technologies utilize independent batteries as backup power, but these require frequent maintenance and charging, increasing maintenance costs. Existing cryogenic systems primarily use dry powder extinguishing agents, with very few water-based agents. Dry powder extinguishing agents cause significant environmental pollution and are difficult to clean up; if sprayed onto fuel oil, they can spoil the oil. Ultrafine dry powder also poses safety hazards to human health.

[0003] Water-based fire extinguishing agents do not have the aforementioned serious pollution problems. However, the applicant has found that the prior art has at least the following technical problems: water-based fire extinguishing agents become viscous at extremely low temperatures, failing to achieve good atomization during spraying. The existing technology addresses the problem of reduced protection space by increasing the number of nozzles, which leads to increased system costs. Furthermore, most nozzles exhibit a linear spray angle or an angle of only 10-20° at low temperatures, significantly reducing the protection space. Utility Model Content

[0004] The purpose of this utility model is to provide a low-temperature fire extinguishing system to solve the technical problem of poor atomization effect of water-based fire extinguishing agents at low temperatures in the prior art; the various technical effects of the preferred technical solutions provided by this utility model are described in detail below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The low-temperature fire extinguishing system provided by this utility model includes a fire extinguishing tank, a pressure storage device, a fire extinguishing pipeline, a first connecting pipeline, and a second connecting pipeline, wherein:

[0007] The pressure storage device includes a housing and a pressure tank located inside the housing. The housing is provided with a gas inlet channel, a first passage and a second passage. The first passage is in communication with the fire extinguishing tank and the second passage is connected to the fire extinguishing pipeline.

[0008] When the gas inlet channel is connected to the fire extinguishing pipeline, and the fire extinguishing agent outlet of the fire extinguishing tank is connected to the fire extinguishing pipeline, the pressure tank is in the open state.

[0009] When the pressure tank is in the open state, the pressure tank is connected to the first passage and the first connecting pipe. The high-pressure gas in the pressure tank can enter the fire extinguishing tank to provide auxiliary spray power. The pressure tank is also connected to the second passage and the second connecting pipe. The high-pressure gas in the pressure tank enters the fire extinguishing pipeline as the breaking power of the viscous fire extinguishing agent at low temperature.

[0010] Preferably, the pressure storage device further includes a trigger piston and a puncture needle, wherein:

[0011] A piston chamber is formed at the bottom of the inner cavity of the housing. The trigger piston is located in the piston chamber. The piercing needle is fixed to one end of the trigger piston and is positioned towards the opening of the pressure tank.

[0012] A sealing element is fitted onto the trigger piston, and the sealing element is in a sealing fit with the side wall of the piston chamber;

[0013] The piston chamber is connected to the first passage and the second passage, and the gas inlet passage is connected to the piston chamber. The pressure inside the fire extinguishing canister pushes the trigger piston to move toward the pressure tank, thereby causing the piercing needle to pierce the canister opening seal of the pressure tank, and thus connecting the pressure tank and the piston chamber.

[0014] Preferably, the piercing needle is provided with an axial channel and a transverse channel that are connected to each other. The transverse channel is connected to the piston chamber. When the piercing needle pierces the pressure tank, at least the axial channel extends into the pressure tank, and the high-pressure gas in the pressure tank can enter the piston chamber in sequence through the axial channel and the transverse channel.

[0015] Preferably, the pressure storage device further includes a fixed block and an elastic energy storage element, wherein:

[0016] The fixing block is fixed inside the housing and fixes the opening of the pressure tank;

[0017] The elastic energy storage component is located between the trigger piston and the fixed block, and is used to support the trigger piston.

[0018] Preferably, the pressure tank, the trigger piston, the elastic energy storage component, and the gas inlet channel are arranged along the same axis.

[0019] Preferably, the housing includes a sealed, fixedly connected bottom shell and an upper shell, and the pressure storage device further includes a first connector and a second connector, wherein:

[0020] The pressure tank is fixed inside the bottom shell, the piston chamber is formed in the upper shell, and the first connector and the second connector are respectively fixed on opposite sides of the upper shell and sealed to the upper shell.

[0021] The first passage is formed within the first connector, and the second passage is formed within the second connector.

[0022] Preferably, the low-temperature fire extinguishing system includes a branch pipe, the two ends of which are connected to the fire extinguishing pipeline and the gas inlet channel, respectively.

[0023] Preferably, the fire extinguishing canister includes a main valve body, a main piston, a canister body, and a trigger pipe connector, wherein,

[0024] The main valve body is provided with a through channel arranged in a horizontal direction and a connecting channel arranged in a vertical direction. The port of the connecting channel is connected to the side end of the through channel. The connector of the tank body extends into the connecting channel and is connected to the connecting channel. The main piston is installed in the through channel and can move horizontally in the through channel. The main piston is arranged perpendicular to the connector. The port of the through channel is connected to the fire extinguishing pipeline.

[0025] The through channel includes a nozzle section, a small-diameter section, and a large-diameter section, which are connected in sequence. The inner diameter of the small-diameter section is smaller than that of the large-diameter section. The fire extinguishing pipeline is connected to the nozzle section, and the connecting channel is connected to the small-diameter section.

[0026] A first mating groove is provided on the rear side wall of the main valve body, and the trigger pipe connector is installed in the first mating groove. The first mating groove is close to the large-diameter section and the first mating groove is connected to the large-diameter section through a first passage.

[0027] Preferably, the tank body is provided with a connecting pipe, the connector is provided with a second channel and a third channel, the upper end of the connecting pipe is connected to the lower end of the second channel, the upper end of the second channel is connected to the small diameter section, the lower end of the connecting pipe is located in the bottom area of ​​the tank body, and the lower end of the third channel is connected to the upper area of ​​the tank body.

[0028] The lower part of the tank contains a fire extinguishing agent, and the upper part of the tank is filled with gas;

[0029] An annular channel is provided between the connector and the connection channel, and the upper end of the third channel is connected to the annular channel;

[0030] A second mating groove is provided on the rear side wall of the main valve body. The lower end of the second mating groove is connected to the annular channel through a fourth channel. A high-pressure gas connector is installed in the second mating groove. The high-pressure gas connector is connected to the first connecting pipeline. The high-pressure gas in the first connecting pipeline can enter the pressurized space of the fire extinguishing tank in sequence through the high-pressure gas connector, the fourth channel, the annular channel, and the third channel.

[0031] Preferably, an opening piston is provided in the second mating groove, wherein:

[0032] The high-pressure gas connector and the fourth channel are sealed by an opening piston. The pressurized gas in the through channel can push the opening piston open, thereby making the high-pressure gas connector and the fourth channel in a connected state.

[0033] The cryogenic fire extinguishing system provided by this utility model has the following advantages compared with the prior art: It achieves the function of mixing high-pressure gas and extinguishing agent into a two-phase flow within the system without external power, relying solely on its mechanical structure. In this embodiment, the pressure storage device is connected to the fire extinguishing tank via a first connecting pipe, providing auxiliary power for the spraying of the fire extinguishing tank. Furthermore, the pressure storage device is connected to the fire extinguishing pipeline via a second connecting pipe, allowing the high-pressure gas from the pressure storage device to be introduced into the fire extinguishing pipeline, where it mixes and breaks up with the viscous extinguishing agent, forming a two-phase flow that is then sprayed out, resulting in a better spraying effect. This solves the problem of insufficient spraying power caused by pressure reduction in pressurized fire extinguishing tanks at ultra-low temperatures. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the overall structure of a low-temperature fire extinguishing system;

[0036] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of a cryogenic fire extinguishing system;

[0037] Figure 3 This is a horizontal cross-sectional view of the pressure storage device connected to the fire extinguishing tank via the first connecting pipe;

[0038] Figure 4 This is a schematic diagram of the pressure storage device;

[0039] Figure 5 yes Figure 4 A magnified view of a section at point A in the middle;

[0040] Figure 6 This is a cross-sectional view of the piercing needle;

[0041] Figure 7 This is a side view of the main control valve;

[0042] Figure 8 yes Figure 7 Cross-sectional view of AA in the middle;

[0043] Figure 9 yes Figure 7 Cross-sectional view of BB in the middle;

[0044] Figure 10 This is a cross-sectional view of DD in section 7;

[0045] Figure 11 yes Figure 8 Cross-sectional view of CC.

[0046] In the diagram: 1. Main valve body; 11. Through passage; 111. Nozzle section; 112. Small diameter section; 113. Large diameter section; 12. Connecting passage; 13. First mating groove; 14. Annular passage; 15. Second mating groove; 16. Third mating groove; 17. First passage; 18. Fourth passage; 19. Fifth passage; 2. Fire extinguishing pipeline; 3. Pressure storage device; 300. Piston chamber; 31. Shell; 311. Bottom shell; 312. Upper shell; 32. Pressure storage tank; 33. First connector; 331. First passage; 34. Second connector; 341. Second passage; 35. 1. Trigger piston; 36. Piercing needle; 361. Axial channel; 362. Lateral channel; 37. Fixing block; 38. Elastic energy storage component; 39. Gas inlet channel; 4. Tank body; 41. Connector; 411. Second channel; 412. Third channel; 42. Connecting pipe; 5. First connecting pipe; 6. Second connecting pipe; 7. Branch pipe; 8. Trigger pipe; 9. Main piston; 91. Movable sleeve; 911. Through hole; 92. Piston head; 10. Spring; 20. Trigger pipe connector; 30. High-pressure gas connector; 40. Opening piston; 50. Inflation valve. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0048] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0049] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] This utility model provides a low-temperature fire extinguishing system that solves the problem of insufficient spray power caused by pressure reduction in pressurized fire extinguishing tanks at ultra-low temperatures.

[0051] The following is combined Figures 1-11 The technical solution provided by this utility model will be described in more detail.

[0052] See Figures 1-5 As shown, the low-temperature fire extinguishing system provided by this utility model includes a fire extinguishing tank, a pressure storage device 3, a fire extinguishing pipeline 2, a first connecting pipeline 5, and a second connecting pipeline 6, wherein: see Figure 4 and Figure 5 As shown, the pressure storage device 3 includes a housing 31 and a pressure storage tank 32 located inside the housing 31. The housing 31 is provided with a gas inlet channel 39, a first passage 331, and a second passage 341. The first passage 331 is connected to the fire extinguishing tank, and the second passage 341 is connected to the fire extinguishing pipeline 2. When the gas inlet channel 39 is connected to the fire extinguishing pipeline 2, and the fire extinguishing agent outlet of the fire extinguishing tank is connected to the fire extinguishing pipeline 2, the pressure storage tank 32 is in the open state. (See also...) Figures 1-3 As shown, when the pressure tank 32 is in the open state, the pressure tank 32 is connected to the first passage 331 and the first connecting pipe 5. The high-pressure gas in the pressure tank 32 can enter the fire extinguishing tank to provide auxiliary spray power. The pressure tank 32 is also connected to the second passage 341 and the second connecting pipe 6. The high-pressure gas in the pressure tank 32 enters the fire extinguishing pipe 2 as the breaking power of the viscous fire extinguishing agent at low temperature.

[0053] The pressure tank 32 stores high-pressure compressed gas, which can be argon, nitrogen, carbon dioxide, etc.

[0054] The fire extinguishing pipeline 2 can be connected to the nozzle. The fire extinguishing tank can be activated using two existing technologies. First, a rapid-response, blind-spot-free mechanical fire source detection device (authorization number CN 216725611U) can be installed on the fire extinguishing pipeline 2. This device mechanically triggers the opening of the fire extinguishing tank, allowing the extinguishing agent to be sprayed out through the fire extinguishing pipeline 2. Second, see... Figure 1 As shown, a trigger pipe 8 is connected to the fire extinguishing tank, and a manual drive trigger of a non-pressurized fire extinguishing system with the prior art authorization announcement number CN216725612U is connected to the trigger pipe 8. This trigger is used to actively start the fire extinguishing tank, thereby enabling the fire extinguishing system to work.

[0055] See Figure 1 and Figure 2 As shown, when the fire source detection device on the fire extinguishing pipeline 2 or the manual drive trigger on the triggering pipeline 8 opens the fire extinguishing tank, the extinguishing agent in the fire extinguishing tank is sprayed out from the fire extinguishing pipeline 2. The pressure in the fire extinguishing tank enters the pressure storage device 3 through the gas inlet channel 39, and the pressure storage tank 32 can be opened. Part of the high-pressure gas in the pressure storage tank 32 enters the fire extinguishing tank through the first passage 331 and the first connecting pipeline 5 to provide auxiliary spray power. The other part of the high-pressure gas in the pressure storage tank 32 enters the fire extinguishing pipeline 2 through the second passage 341 and the second connecting pipeline 6, and mixes with the extinguishing agent in the fire extinguishing pipeline 2, thereby providing a two-phase fluid for spray atomization.

[0056] The first passage 331 and the second passage 341 can be designed with different diameters to control the gas flow rate of the pressure storage device 3, thereby adjusting the ratio of gas entering the fire extinguishing tank to gas entering the fire extinguishing pipeline 2 to achieve better results.

[0057] This embodiment provides a specific implementation method that enables the pressure tank 32 to be opened when the pressure inside the fire extinguisher enters the pressure storage device 3 through the gas inlet channel 39.

[0058] See Figure 4 , Figure 5 and Figure 6As shown, the pressure storage device 3 in this embodiment also includes a trigger piston 35 and a piercing needle 36. A piston chamber 300 is formed at the bottom of the inner cavity of the housing 31. The trigger piston 35 is located within the piston chamber 300. The piercing needle 36 is fixed to one end of the trigger piston 35 and is positioned towards the opening of the pressure storage tank 32. A sealing element is fitted onto the trigger piston 35, and the sealing element seals against the side wall of the piston chamber 300. The piston chamber 300 is connected to the first passage 331 and the second passage 341. The gas inlet passage 39 is connected to the piston chamber 300. The pressure inside the fire extinguishing tank pushes the trigger piston 35 towards the pressure storage tank 32, thereby causing the piercing needle 36 to pierce the sealing element at the opening of the pressure storage tank 32, thus connecting the pressure storage tank 32 and the piston chamber 300.

[0059] See Figures 1-3 As shown, the low-temperature fire extinguishing system includes a branch pipe 7, and the two ends of the branch pipe 7 are connected to the fire extinguishing pipeline 2 and the gas inlet channel 39, respectively.

[0060] For fire extinguishing tanks, the lower part of the tank body 4 contains the extinguishing agent, and the upper part of the tank body 4 is filled with gas. The extinguishing agent can be a water-based extinguishing agent, a foam extinguishing agent, a dry powder extinguishing agent, or a pure gas extinguishing agent. The upper part of the tank body 4 is filled with gas, which can be an inert gas such as helium, nitrogen, or argon, and the pressure can range from 10 bar to 30 bar. This gas provides pressure for the extinguishing agent, and when activated, the extinguishing agent will enter the fire extinguishing pipeline 2 under the action of the gas pressure inside the tank body 4.

[0061] See Figure 4 and Figure 5 As shown, when the fire extinguishing tank is opened, the extinguishing agent and gas inside the fire extinguishing tank enter the fire extinguishing pipeline 2. The pressurized gas inside the fire extinguishing tank enters the gas inlet channel 39 through the branch pipe 7, pushing the trigger piston 35 to move downward. The trigger piston 35 drives the piercing needle 36 to pierce the sealing membrane at the opening of the pressure tank 32, releasing the high-pressure gas inside the pressure tank 32. The high-pressure gas enters the piston chamber 300 (specifically the lower cavity of the piston chamber 300), and then enters the first passage 331 and the second passage 341.

[0062] As an optional implementation, see Figure 5 and Figure 6 As shown, the piercing needle 36 is provided with an axial channel 361 and a transverse channel 362 that are connected. The transverse channel 362 is connected to the piston chamber 300. The transverse channel 362 is horizontally arranged and passes through the piercing needle 36. When the piercing needle 36 pierces the pressure tank 32, at least the axial channel 361 extends into the pressure tank 32. The high-pressure gas in the pressure tank 32 can enter the piston chamber 300 in sequence through the axial channel 361 and the transverse channel 362.

[0063] After the piercing needle 36 pierces the opening of the pressure tank 32, the high-pressure gas inside the pressure tank 32 is sequentially introduced into the piston chamber 300 (specifically the lower cavity of the piston chamber 300) through the axial channel 361 and the transverse channel 362. Then the high-pressure gas enters the first passage 331 and the second passage 341.

[0064] As an optional implementation, see Figure 4 and Figure 5 As shown, the pressure storage device 3 also includes a fixing block 37 and an elastic energy storage component 38, wherein: the fixing block 37 is fixed inside the housing 31 and fixes the opening of the pressure storage tank 32; the elastic energy storage component 38 is located between the trigger piston 35 and the fixing block 37 and is used to support the trigger piston 35.

[0065] The elastic energy storage component 38 can be a spring, disc spring, wave spring, etc., used to support the trigger piston 35, prevent the trigger piston 35 from moving downward under vibration or impact, and facilitate the reset of the trigger piston 35.

[0066] As an optional implementation, see Figure 4 and Figure 5 As shown, the pressure tank 32, trigger piston 35, elastic energy storage component 38, and gas inlet channel 39 are arranged coaxially.

[0067] The above structure facilitates the entry of pressurized gas inside the fire extinguishing tank into the gas inlet channel 39 through the branch pipe 7, which pushes the trigger piston 35 to move downward. The trigger piston 35 drives the piercing needle 36 to pierce the sealing film at the opening of the pressure tank 32, ensuring that the piercing needle 36 accurately pierces the opening of the pressure tank 32.

[0068] As an optional implementation, see Figure 4 and Figure 5 As shown, the housing 31 includes a bottom shell 311 and an upper shell 312 that are sealed and fixedly connected. The pressure storage device 3 also includes a first connector 33 and a second connector 34, wherein: the pressure storage tank 32 is fixed inside the bottom shell 311, the piston chamber 300 is formed in the upper shell 312, the first connector 33 and the second connector 34 are respectively fixed on opposite sides of the upper shell 312 and sealed to the upper shell 312; the first passage 331 is formed in the first connector 33, and the second passage 341 is formed in the second connector 34.

[0069] The bottom shell 311 and the upper shell 312 are sealed and fixed by corresponding sealing rings, which will not be described in detail here. The first connector 33 is sealed to the upper shell 312 by corresponding sealing rings, and the second connector 34 is sealed to the upper shell 312 by corresponding sealing rings to prevent air leakage. When the gas inside the pressure tank 32 is released, the high-pressure gas enters the first connecting pipe 5 and the gas space of the fire extinguishing tank through the first passage 331 to provide auxiliary spray power; when the gas inside the pressure tank 32 is released, the high-pressure gas enters the second connecting pipe 6 and the fire extinguishing pipe 2 through the second passage 341, where it mixes with the fire extinguishing agent, thereby providing a two-phase fluid for spray atomization.

[0070] The specific structure of the fire extinguisher is explained below. (See also...) Figures 7-11 As shown, the fire extinguishing tank includes a main valve body 1, a main piston 9, a tank body 4, and a trigger pipe connector 20. The main valve body 1 has a horizontally oriented through-channel 11 and a vertically oriented connecting channel 12. The port of the connecting channel 12 is connected to the side end of the through-channel 11. The connector 41 of the tank body 4 extends into the connecting channel 12 and is connected to it. The main piston 9 is installed within the through-channel 11 and can move within the through-channel. 11 moves horizontally, the main piston 9 is perpendicular to the connector 41, and the port of the through channel 11 is connected to the fire extinguishing pipeline 2; the through channel 11 includes a nozzle section 111, a small diameter section 112 and a large diameter section 113, the nozzle section 111, the small diameter section 112 and the large diameter section 113 are connected in sequence, the inner diameter of the small diameter section 112 is smaller than the inner diameter of the large diameter section 113, the fire extinguishing pipeline 2 is connected to the nozzle section 111, and the connecting channel 12 is connected to the small diameter section 112.

[0071] The fire extinguishing pipeline 2 is connected to an existing automatic triggering device (such as the fast-response, blind-spot-free mechanical fire source detection device with authorization announcement number CN 216725611 U). When the automatic triggering device detects a flame, it will automatically open the gas in the gas storage tank. The gas will enter the through channel 11, thereby pushing the main piston 9 to move away from the nozzle section 111 until the connector 41 is connected to the nozzle section 111. Under the action of the gas pressure in the tank 4, the extinguishing agent in the tank 4 will enter the automatic triggering device along the connector 41, the small diameter section 112 and the nozzle section 111, and finally be sprayed out from the nozzle of the automatic triggering device.

[0072] See Figure 7 and Figure 8As shown, the main piston 9 includes a movable sleeve 91 and a piston head 92. The end of the movable sleeve 91 is fixedly connected to the piston head 92. A through hole 911 is provided on the side wall of the movable sleeve 91, which is close to the piston head 92. A first seal is provided between the movable sleeve 91 and the small-diameter section 112. There are two first seals. When not in use, the two first seals are located on both sides of the connecting channel 12 to prevent gas in the tank 4 from passing through the first seals. A second seal is provided between the piston head 92 and the large-diameter section 113 to enhance the sealing effect. When the gas in the automatic triggering device enters the through channel 11, the gas will enter the movable sleeve 91, and some of the gas will enter the large-diameter section 113 through the through hole 911, thereby applying a thrust to the piston head 92 and causing the main piston 9 to move.

[0073] See Figure 8 A spring 10 is located at piston head 92. After the mechanical multi-functional fire extinguisher is closed, the compression force of the spring 10 will cause the main piston 3 to move to its original position in the opposite direction. The spring 10 can also prevent the mechanical multi-functional fire extinguisher from being accidentally triggered due to inertia caused by vibration.

[0074] See Figures 7-11 As shown, a first mating groove 13 is provided on the rear side wall of the main valve body 1, and the trigger pipe connector 20 is installed in the first mating groove 13. The first mating groove 13 is close to the large diameter section 113 and the first mating groove 13 is connected to the large diameter section 113 through the first channel 17.

[0075] The aforementioned trigger pipe connector 20 is connected to the trigger pipe 8 and the aforementioned manual triggering device in the prior art. The manual triggering device is opened manually, and the gas in the gas tank will enter the space of the large-diameter section 113 through the trigger pipe connector 20 and the first channel 17, thereby pushing the main piston 9 to move away from the nozzle section 111 (to the left in the figure). At the same time, some of the gas in the large-diameter section 113 will also enter the movable sleeve 91 through the through hole 911. After the connector 41 and the nozzle section 111 can be connected, the extinguishing agent in the tank 4 will be sprayed out along the connector 41 and the small-diameter section 112 under the action of the gas pressure in the tank 4.

[0076] As an optional implementation, see Figure 2 The tank body 4 is equipped with a connecting pipe 42, see [link / reference]. Figure 10The connector 41 has a second channel 411 and a third channel 412. The upper end of the connecting pipe 42 is connected to the lower end of the second channel 411, and the upper end of the second channel 411 is connected to the small-diameter section 112. The lower end of the connecting pipe 42 is located in the bottom area of ​​the tank 4, and the lower end of the third channel 412 is connected to the upper area of ​​the tank 4. The lower area of ​​the tank 4 contains the extinguishing agent, and the upper area of ​​the tank 4 is filled with gas. An annular channel 14 is provided between the connector 41 and the connecting channel 12. The upper end of the three-channel 412 is connected to the annular channel 14; a second mating groove 15 is provided on the rear side wall of the main valve body 1, and the lower end of the second mating groove 15 is connected to the annular channel 14 through a fourth channel 18. A high-pressure gas connector 30 is installed in the second mating groove 15, and the high-pressure gas connector 30 is connected to the first connecting pipe 5. The high-pressure gas in the first connecting pipe 5 can sequentially enter the pressurized space of the fire extinguishing tank through the high-pressure gas connector 30, the fourth channel 18, the annular channel 14, and the third channel 412. See also Figure 8 and Figure 9 As shown, an opening piston 40 is provided in the second mating groove 15. The high-pressure gas connector 30 and the fourth channel 18 are blocked by the opening piston 40. The pressure gas in the through channel 11 can push open the opening piston 40, so that the high-pressure gas connector 30 and the fourth channel 18 are in a connected state.

[0077] See Figure 8 Regardless of whether the existing manual or automatic triggering device moves the main piston 9 away from the nozzle section 111 until the connector 41 connects with the nozzle section 111, the pressurized gas in the extinguishing tank enters the through channel 11, and the opening piston 40 is pushed open. At this time, the high-pressure gas connector 30, the fourth channel 18, and the annular channel 14 are connected, and the high-pressure gas in the first connecting pipe 5 in the pressure tank 32 can sequentially enter the pressurized space of the extinguishing tank through the high-pressure gas connector 30, the fourth channel 18, the annular channel 14, and the third channel 412. Thus, the high-pressure gas in the pressure tank 32 serves as the auxiliary spray power for the extinguishing agent.

[0078] See Figure 11 As shown, a third mating groove 16 is provided on the top wall of the main valve body 1. The third mating groove 16 is connected to the annular channel 14 through the fifth channel 19. An inflation valve 50 is installed in the third mating groove 16. The inflation valve 50 can be connected to the inflation tank. After the inflation valve 50 is opened, the gas in the inflation tank can enter the tank body 4 through the inflation valve 50, the fifth channel 19, the annular channel 14 and the third channel 412.

[0079] See Figure 3 , Figure 8 and Figure 9As shown, the high-pressure gas connector 30 is connected to the first connecting pipe 5. When the fire extinguisher is opened, its working pressure will open the pressure tank 32. The high-pressure gas in the pressure tank 32 enters the high-pressure gas connector 30 through the first passage 331 and the first connecting pipe 5. Under the action of the pressurized gas, the opening piston 40 is pushed open. The high-pressure gas can enter the pressurized space of the fire extinguisher in sequence through the high-pressure gas connector 30, the fourth channel 18, the annular channel 14, and the third channel 412, thus becoming the auxiliary power for the fire extinguisher to spray.

[0080] The cryogenic fire extinguishing system of this embodiment requires no external power; it achieves the function of mixing gas and extinguishing agent into a two-phase flow entirely within the system through its mechanical structure. In existing technologies, when spraying high-viscosity liquids, external compressed air or similar auxiliary power is required for breaking up the liquid. This embodiment eliminates the need for external power, achieving the aforementioned effect entirely within the system. It solves the problem of insufficient spray power caused by pressure reduction in pressurized fire extinguishing tanks at ultra-low temperatures. The pressure storage device 3 provides both auxiliary power for the spraying of the fire extinguishing tank and gas for breaking up viscous extinguishing agents. Ultra-low temperature refers to a temperature of approximately minus fifty degrees Celsius.

[0081] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A low-temperature fire extinguishing system, characterized in that, Includes fire extinguishing tank, pressurization device, fire extinguishing pipeline, first connecting pipeline and second connecting pipeline, wherein: The pressure storage device includes a housing and a pressure tank located inside the housing. The housing is provided with a gas inlet channel, a first passage and a second passage. The first passage is in communication with the fire extinguishing tank and the second passage is connected to the fire extinguishing pipeline. When the gas inlet channel is connected to the fire extinguishing pipeline, and the fire extinguishing agent outlet of the fire extinguishing tank is connected to the fire extinguishing pipeline, the pressure tank is in the open state. When the pressure tank is in the open state, the pressure tank is connected to the first passage and the first connecting pipe. The high-pressure gas in the pressure tank can enter the fire extinguishing tank to provide auxiliary spray power. The pressure tank is also connected to the second passage and the second connecting pipe. The high-pressure gas in the pressure tank enters the fire extinguishing pipeline as the breaking power of the viscous fire extinguishing agent at low temperature.

2. The low-temperature fire extinguishing system according to claim 1, characterized in that, The pressure storage device also includes a trigger piston and a puncture needle, wherein: A piston chamber is formed at the bottom of the inner cavity of the housing. The trigger piston is located in the piston chamber. The piercing needle is fixed to one end of the trigger piston and is positioned towards the opening of the pressure tank. A sealing element is fitted onto the trigger piston, and the sealing element is in a sealing fit with the side wall of the piston chamber; The piston chamber is connected to the first passage and the second passage, and the gas inlet passage is connected to the piston chamber. The pressure inside the fire extinguishing canister pushes the trigger piston to move toward the pressure tank, thereby causing the piercing needle to pierce the canister opening seal of the pressure tank, and thus connecting the pressure tank and the piston chamber.

3. The low-temperature fire extinguishing system according to claim 2, characterized in that, The piercing needle is provided with an axial channel and a transverse channel that are connected to each other. The transverse channel is connected to the piston chamber. When the piercing needle pierces the pressure tank, at least the axial channel extends into the pressure tank. The high-pressure gas in the pressure tank can enter the piston chamber in sequence through the axial channel and the transverse channel.

4. The low-temperature fire extinguishing system according to claim 2, characterized in that, The pressure storage device further includes a fixed block and an elastic energy storage element, wherein: The fixing block is fixed inside the housing and fixes the opening of the pressure tank; The elastic energy storage component is located between the trigger piston and the fixed block, and is used to support the trigger piston.

5. The low-temperature fire extinguishing system according to claim 4, characterized in that, The pressure tank, the trigger piston, the elastic energy storage component, and the gas inlet channel are arranged along the same axis.

6. The low-temperature fire extinguishing system according to claim 2, characterized in that, The housing includes a sealed, fixedly connected bottom shell and an upper shell, and the pressure storage device further includes a first connector and a second connector, wherein: The pressure tank is fixed inside the bottom shell, the piston chamber is formed in the upper shell, and the first connector and the second connector are respectively fixed on opposite sides of the upper shell and sealed to the upper shell. The first passage is formed within the first connector, and the second passage is formed within the second connector.

7. The low-temperature fire extinguishing system according to claim 1, characterized in that, The cryogenic fire extinguishing system includes a branch pipe, the two ends of which are connected to the fire extinguishing pipeline and the gas inlet channel, respectively.

8. The low-temperature fire extinguishing system according to claim 1, characterized in that, The fire extinguishing canister includes a main valve body, a main piston, a canister body, and a trigger pipe connector, wherein, The main valve body is provided with a through channel arranged in a horizontal direction and a connecting channel arranged in a vertical direction. The port of the connecting channel is connected to the side end of the through channel. The connector of the tank body extends into the connecting channel and is connected to the connecting channel. The main piston is installed in the through channel and can move horizontally in the through channel. The main piston is arranged perpendicular to the connector. The port of the through channel is connected to the fire extinguishing pipeline. The through channel includes a nozzle section, a small-diameter section, and a large-diameter section, which are connected in sequence. The inner diameter of the small-diameter section is smaller than that of the large-diameter section. The fire extinguishing pipeline is connected to the nozzle section, and the connecting channel is connected to the small-diameter section. A first mating groove is provided on the rear side wall of the main valve body, and the trigger pipe connector is installed in the first mating groove. The first mating groove is close to the large-diameter section and the first mating groove is connected to the large-diameter section through a first passage.

9. The low-temperature fire extinguishing system according to claim 8, characterized in that, The tank is provided with a connecting pipe, and the connector is provided with a second channel and a third channel. The upper end of the connecting pipe is connected to the lower end of the second channel, the upper end of the second channel is connected to the small-diameter section, the lower end of the connecting pipe is located in the bottom area of ​​the tank, and the lower end of the third channel is connected to the upper area of ​​the tank. The lower part of the tank contains a fire extinguishing agent, and the upper part of the tank is filled with gas; An annular channel is provided between the connector and the connection channel, and the upper end of the third channel is connected to the annular channel; A second mating groove is provided on the rear side wall of the main valve body. The lower end of the second mating groove is connected to the annular channel through a fourth channel. A high-pressure gas connector is installed in the second mating groove. The high-pressure gas connector is connected to the first connecting pipeline. The high-pressure gas in the first connecting pipeline can enter the pressurized space of the fire extinguishing tank in sequence through the high-pressure gas connector, the fourth channel, the annular channel, and the third channel.

10. The low-temperature fire extinguishing system according to claim 9, characterized in that, An opening piston is provided in the second mating groove, wherein: The high-pressure gas connector and the fourth channel are sealed by an opening piston. The pressurized gas in the through channel can push the opening piston open, thereby making the high-pressure gas connector and the fourth channel in a connected state.

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