Gas-liquid two-phase flow water mist fire extinguisher

Abstract

The application discloses a gas-liquid two-phase flow water mist fire extinguisher, which comprises a shell, a storage tank for storing fire extinguishing medium, a spray gun for spraying the fire extinguishing medium and a conveying assembly connecting the storage tank and the spray gun are arranged on the shell; the conveying assembly comprises a connecting hose connecting the storage tank and the spray gun and a rotating disc for accommodating the connecting hose; the connecting hose comprises a pipe body and a pipe joint for connecting the pipe body and corresponding components; the pipe body comprises a sealing joint connected with the pipe joint, a first conveying pipe and a second conveying pipe which are nested with each other. The gas-liquid two-phase flow water mist fire extinguisher has the advantages of good fire extinguishing effect, high stability, rapid response and high popularization value.

Description

Technical Field

[0001] This application relates to the field of fire protection equipment, and in particular to gas-liquid two-phase water mist fire extinguishers. Background Technology

[0002] Over the past thirty years, my country's economy has developed rapidly, its expressway network has expanded extensively, and the transportation industry has continued to grow rapidly, resulting in an ever-increasing density of vehicles on expressways. This has led to a surge in traffic accidents, accompanied by frequent fires. Fires caused by vehicle electrical malfunctions, hazardous chemical leaks, and high temperatures are also not uncommon. Regardless of the cause, fires generally progress gradually from initial ignition to widespread combustion. The first three to five minutes are crucial for firefighting and rescue efforts; fuel tanks that burn for more than three minutes become extremely dangerous.

[0003] Currently, commonly used vehicle-mounted fire extinguishers are generally dry powder fire extinguishers, which have short operating times, poor extinguishing effects, and are generally ineffective at cooling down the fire. Once an initial fire fails to be extinguished, the only option is to wait for the nearest fire department. The current situation is that the waiting time for rescue is usually quite long, and by the time rescue vehicles arrive, the accident vehicle is often engulfed in flames. This is especially true for vehicles with leaking or exploding fuel tanks, vehicles carrying hazardous materials, or buses that have been struck and passengers trapped and unable to escape in time. These and other similar risk situations highlight the need for timely, rapid, and effective fire extinguishing equipment on highways for quick fire suppression and rescue at accident scenes. Currently, some areas have increased the number of mobile fire extinguishers in highway service areas, but on the one hand, the number is limited, and on the other hand, service areas are often quite far from accident sites, generally tens of kilometers away, and even longer in some mountainous areas.

[0004] Therefore, there is a significant gap between existing fire extinguishers and actual usage needs. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this application discloses a gas-liquid two-phase water mist fire extinguisher, including a shell, on which a storage tank for storing fire extinguishing medium, a spray gun for spraying fire extinguishing medium, and a delivery assembly connecting the storage tank and the spray gun are provided.

[0006] The delivery assembly includes a connecting hose connecting the storage tank and the spray gun, and a turntable for receiving the connecting hose. The connecting hose includes a tube body and a pipe fitting for connecting the tube body and corresponding components. The tube body includes a sealing joint connected to the pipe fitting, and a first delivery tube and a second delivery tube nested together.

[0007] Optionally, the first delivery pipe is located on the inner side and is hollow inside to form a first fluid channel;

[0008] The second delivery pipe is located on the outside, and the radial gap between the first delivery pipe and the second delivery pipe forms a second fluid channel;

[0009] The sealing joint is provided with a first through hole communicating with the first fluid channel and a second through hole communicating with the second fluid channel, and the pipe joint is provided with a first outlet communicating with the first through hole and a second outlet communicating with the second through hole;

[0010] One of the first through hole and the second through hole is arranged along the axial direction of the tube body, and the other is arranged along the radial direction of the tube body.

[0011] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0012] Optionally, the sealing joint includes:

[0013] A first fixing part is used to seal and connect the first delivery pipe and to the pipe joint, and the first fixing part is provided with a first through hole;

[0014] The second fixing part is used to seal and connect the second delivery pipe and to seal and connect with the pipe joint.

[0015] Optionally, the first fixing part is provided with a stepped hole for the first delivery pipe to pass through. The first fixing part also includes a plug that cooperates with the stepped hole. The plug is used to expand the diameter of the first delivery pipe to clamp the first delivery pipe and the stepped hole. The plug is provided with a first through hole that connects the first fluid channel and the first through hole.

[0016] Optionally, the first fixing part is further provided with a second through hole.

[0017] Optionally, the pipe fitting includes a connection area for receiving the sealing joint, the first outlet and the second outlet communicating into the connection area; the first fixing part is disposed in the connection area and seals against the inner wall of the connection area, and the second fixing part covers the pipe fitting to close the connection area.

[0018] Optionally, the first delivery pipe is aligned with the center of the first fixing part, and the second through hole is located radially outside the first fixing part and passes through the first fixing part axially in the pipe body.

[0019] Optionally, the sealing joint comprises, in sequence along the axial direction of the pipe body:

[0020] The second fixing part is used to seal and connect the second delivery pipe and to seal and connect with the pipe joint.

[0021] A threaded connection is provided on the second fixing part, used to connect the pipe joint and close the connection area of ​​the pipe joint;

[0022] A first fixing part extends into the connection area and is sealed to the inner wall of the connection area. The first fixing part is used to seal the connection of the first delivery pipe. The first fixing part is provided with a first through hole and a second through hole.

[0023] Optionally, a portion of the second fixing part extends into the connection area, and the peripheral surface of this portion has a second seal for sealing the connection area.

[0024] Optionally, the pipe fitting includes a connection area for accommodating at least a portion of the sealing joint, a first outlet, and a second outlet, wherein the first outlet and the second outlet are coaxially arranged, radially side-by-side, or oriented in different directions.

[0025] Optionally, the axis of the first outlet coincides with or is close to the axis of the connecting area.

[0026] This application also discloses an assembly method for the connecting hose of a gas-liquid two-phase water mist fire extinguisher, wherein the gas-liquid two-phase water mist fire extinguisher adopts any of the above-mentioned technical methods, and the assembly method includes:

[0027] Insert at least a portion of the sealing joint into the connection area of ​​the pipe joint until the sealing joint seals the connection area;

[0028] Adjust the axial position of the first fixing part until the first fluid channel, the first through hole and the first outlet are connected, and the second fluid channel, the second through hole and the second outlet are connected.

[0029] This application also discloses a gas-liquid two-phase water mist fire extinguisher, including a housing, on which a storage tank for storing fire extinguishing medium, a spray gun for spraying fire extinguishing medium, and a delivery assembly connecting the storage tank and the spray gun are provided.

[0030] The delivery assembly includes a connecting hose connecting the storage tank and the spray gun, and a turntable for receiving the connecting hose. The turntable includes a bracket for fixing, a receiving tray rotatably mounted on the bracket, and a first locking mechanism disposed on the bracket for limiting the rotation of the receiving tray relative to the bracket. A second locking mechanism for controlling the opening or closing of the storage tank is provided between the storage tank and the connecting hose.

[0031] The gas-liquid two-phase water mist fire extinguisher also includes a triggering component that is linked to the first locking mechanism and / or the second locking mechanism, and the triggering component is configured as follows:

[0032] The spray gun is detachably housed in a clip, and the triggering component is disposed on the spray gun and triggers when the spray gun is moved away from the clip; and / or

[0033] The gas-liquid two-phase water mist fire extinguisher also includes a shielding cover for sealing the housing, and the triggering component is disposed on the shielding cover and is triggered when the shielding cover moves away from the housing.

[0034] Optionally, the first locking mechanism includes:

[0035] A keyhole is provided on the receiving tray and opens toward the bracket;

[0036] A locking pin is movably mounted on the bracket, and the locking pin has a locked state that engages with the lock hole and an unlocked state that is separated from the lock hole;

[0037] The triggering component is used to hold the locking pin in the released state.

[0038] Optionally, the second locking mechanism is a valve disposed between the storage tank and the connecting hose.

[0039] Optionally, the storage tank includes:

[0040] Liquid storage containers are used to store liquid fire extinguishing media;

[0041] Gas cylinders are used to store gaseous fire extinguishing media;

[0042] The second locking mechanism is provided at least between the gas cylinder and the connecting hose.

[0043] Optionally, the triggering component includes

[0044] The active end is fixed to the spray gun and / or the shielding cover;

[0045] The passive end is fixed to the first locking mechanism and / or the second locking mechanism;

[0046] A flexible connector is used to connect the active end and the passive end under stress.

[0047] Optionally, the triggering component further includes a plurality of guides for guiding the force path of the flexible connector.

[0048] Optionally, the triggering component further includes a separation component disposed on the flexible connection, the separation component being used to disconnect the flexible connection under a preset condition.

[0049] Optionally, the separation component includes:

[0050] The first separation joint is cylindrical in shape, with one end open and the other end closed. The closed end of the first separation joint is used to connect the flexible connector, and the interior of the first separation joint is a mating area.

[0051] The second separation connector has one end for connecting to the flexible connector, and the other end is detachably connected to the first separation connector through a mating area.

[0052] Optionally, the second separation joint is provided with a mating ring groove, the inner sidewall of the mating area is provided with a radially protruding mating ring rib, the sidewall of the mating ring groove is provided with a guide slope, and the mating ring rib is a flexible component.

[0053] Optionally, the separation assembly further includes a separation baffle with a separation hole inside. The flexible connector passes through the separation hole, and the diameter of the separation hole is larger than the outer diameter of the second separation connector and smaller than the outer diameter of the first separation connector.

[0054] Optionally, the turntable includes a bracket for fixing, a rotating shaft mounted on the bracket, and a receiving tray mounted on the rotating shaft. The receiving tray has a connection compartment near the rotating shaft. The rotating shaft is hollow inside and extends to the outside of the receiving tray at one end to connect with the storage tank, and extends to the connection compartment at the other end to connect with the pipe joint of the connecting hose.

[0055] Optionally, the rotating shaft is configured as follows:

[0056] The rotating shaft is hollow inside and has two conveying pipes to connect the first conveying pipe and the second conveying pipe respectively;

[0057] The rotating shaft has two shafts, one of which is connected to the liquid storage container in the storage tank, and the other is connected to the gas cylinder in the storage tank. The two rotating shafts are located at one end of the connecting chamber and are connected to the first delivery pipe and the second delivery pipe respectively through the hose and the pipe joint.

[0058] Optionally, the gas cylinder of the storage tank is provided with a first gas pipe connected to the pipe joint and a second gas pipe connected to the liquid storage container. The liquid storage container is provided with a pressure receiving port connected to the second gas pipe and a pressure releasing port connected to the pipe joint.

[0059] Optionally, the gas-liquid two-phase water mist fire extinguisher is provided with a gas path and a liquid path, wherein the gas path includes:

[0060] The first gas path runs from the gas cylinder and pressure reducing valve to the liquid storage container.

[0061] Second air line, from gas cylinder, pressure reducing valve, pipe joint, sealing joint, first delivery pipe, sealing joint connecting the other end of the hose, and pipe joint connecting the other end of the hose to the spray gun.

[0062] The liquid circuit includes: a self-storage container, a pipe joint, a sealing joint, a second delivery pipe, a sealing joint connecting the other end of the hose, and a pipe joint connecting the other end of the hose to the spray gun.

[0063] The second gas path and the liquid path merge within the spray gun to form a two-phase gas-liquid water mist for fire extinguishing.

[0064] The gas-liquid two-phase water mist fire extinguisher described in this application has good fire extinguishing effect, high stability, and rapid response, and has high promotional value.

[0065] The specific beneficial technical effects will be further explained in the specific implementation methods in conjunction with the specific structures or steps. Attached Figure Description

[0066] Figure 1a This is a schematic diagram of the connecting hose of a gas-liquid two-phase water mist fire extinguisher in one embodiment.

[0067] Figure 1b for Figure 1a Enlarged schematic diagram of one end of the connecting hose of a gas-liquid two-phase water mist fire extinguisher;

[0068] Figure 1c This is a schematic diagram of a pipe fitting in one embodiment;

[0069] Figure 1d This is a schematic diagram of a pipe fitting in another embodiment;

[0070] Figure 2a This is a schematic diagram of the tube body connecting the flexible hose in one embodiment;

[0071] Figure 2b for Figure 2a Enlarged schematic diagram of one end of the tube;

[0072] Figure 2c for Figure 2a A schematic diagram of the sealing joint of the connecting hose;

[0073] Figure 2d for Figure 2a A schematic diagram of the connecting hose fittings;

[0074] Figure 3a This is a schematic diagram of a gas-liquid two-phase water mist fire extinguisher in one embodiment;

[0075] Figure 3b for Figure 3a A schematic diagram of the internal structure of a gas-liquid two-phase water mist fire extinguisher.

[0076] Figure 4a This is a schematic diagram of the second locking mechanism and triggering component in one embodiment;

[0077] Figure 4b and Figure 4c for Figure 4a Enlarged schematic diagram of the separated components;

[0078] Figure 4d This is a schematic diagram of the first locking mechanism and the triggering component in one embodiment.

[0079] The annotations in the figure are explained as follows:

[0080] 10. Pipe body;

[0081] 11. Sealing joint; 111. First fixing part; 1111. First through hole; 1112. Second through hole; 1113. Stepped hole; 1114. Plug; 11141. Plug; 1115. First through hole; 1116. First sealing element; 1117. First annular groove; 1118. Second annular groove; 112. Second fixing part; 1121. Threaded part; 1122. Second sealing element; 113. Neck; 1131. Second through hole;

[0082] 12. First delivery pipe; 121. First fluid channel;

[0083] 13. Second delivery pipe; 131. Second fluid channel;

[0084] 20. Pipe fitting; 201. First outlet; 202. Second outlet; 203. Connection area;

[0085] 30. Housing; 301. Cover;

[0086] 31. Storage tank; 311. Liquid storage container; 312. Gas cylinder; 313. Foam tank;

[0087] 32. Spray gun;

[0088] 33. Conveying assembly; 331. Connecting hose; 332. Turntable; 333. Bracket; 3331. Rotating shaft; 334. Receiving tray; 3341. Connecting compartment; 335. First locking mechanism; 3351. Locking hole; 3352. Locking pin; 336. Second locking mechanism; 3361. Rocker arm;

[0089] 34. Triggering component; 341. Active end; 342. Passive end; 343. Flexible connector; 344. Guide component; 345. Separation component; 3451. First separation joint; 3452. Mating area; 3453. Second separation joint; 3454. Mating annular groove; 3455. Guide slope; 3456. Mating annular rib; 3457. Separation baffle. Detailed Implementation

[0090] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0091] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0092] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0093] refer to Figures 1a to 2c This application discloses a gas-liquid two-phase water mist fire extinguisher, including a housing 30, a storage tank 31 for storing fire extinguishing medium, a spray gun 32 for spraying fire extinguishing medium, and a delivery assembly 33 connecting the storage tank 31 and the spray gun 32.

[0094] The delivery assembly 33 includes a connecting hose 331 connecting the storage tank 31 and the spray gun 32 and a turntable 332 for receiving the connecting hose 331. The connecting hose 331 includes a tube body 10 and a pipe fitting 20 connected to the tube body 10. The tube body 10 includes a sealing joint 11 connected to the pipe fitting 20, a first delivery pipe 12 nested with the pipe fitting 20, and a second delivery pipe 13 nested with the pipe fitting 20.

[0095] The housing 30 in this embodiment has various forms, such as a closed box structure to protect the components; a semi-open frame structure to facilitate the placement and removal of components and the connection and arrangement of pipelines; or a fully open support platform structure, etc. Therefore, the phrase "provided on the housing" should be understood as a broad connection relationship rather than a specific spatial relationship. For example, in some embodiments, the storage tank 31 includes a liquid storage container 311 and a gas cylinder 312. When the liquid storage container 311 is large, it can be placed on the outside of the housing 30. The specific spatial relationship can be adjusted as needed according to the actual situation.

[0096] The gas-liquid two-phase water mist is mainly transmitted separately through connecting hoses. Therefore, the following text will focus on explaining the setting principle and details of the connecting hoses.

[0097] The first delivery pipe 12 and the second delivery pipe 13 define two isolated delivery channels, namely the first fluid channel 121 and the second fluid channel 131. The first fluid channel 121 and the second fluid channel 131 can respectively deliver liquid and gaseous media, thereby achieving a water mist fire extinguishing effect during end-use. The nested first delivery pipe 12 and the second delivery pipe 13 overcome the technical problems existing in the parallel dual-pipe technical solutions of the prior art.

[0098] Referring to one embodiment, the first delivery pipe 12 is located on the inner side and is hollow inside to form a first fluid channel 121;

[0099] The second delivery pipe 13 is located on the outside and the radial gap between the first delivery pipe 12 and the second delivery pipe 13 forms the second fluid channel 131;

[0100] The sealing joint 11 is provided with a first through hole 1111 communicating with the first fluid channel 121 and a second through hole 1112 communicating with the second fluid channel 131. The pipe joint 20 is provided with a first outlet 201 communicating with the first through hole 1111 and a second outlet 202 communicating with the second through hole 1112.

[0101] One of the first through hole 1111 and the second through hole 1112 is arranged along the axial direction of the tube body 10, and the other is arranged along the radial direction of the tube body 10.

[0102] For example, regarding the equivalent flow area, the existing parallel dual-pipe technology is limited by the overall diameter of the conveying pipe, resulting in a small cross-section for each individual conveying pipe. In this embodiment, by nesting the first conveying pipe 12 and the second conveying pipe 13, the effective flow area of ​​each individual conveying pipe can be effectively increased without changing the overall diameter of the conveying pipe. Regarding the allocation of the equivalent flow area between the first fluid channel 121 and the second fluid channel 131, in one embodiment, the equivalent flow area of ​​the first fluid channel 121 is greater than or equal to, but less than, the equivalent flow area of ​​the second fluid channel 131. The specific allocation of the two fluid channels can be set as needed based on the different physicochemical properties of the conveying medium, changes in conveying efficiency, and adjustments to the conveying pressure.

[0103] For example, the conveying pipe in this embodiment also has an advantage in terms of weight compared to the prior art. In the prior art, the pressure of each conveying pipe is maintained by its own pipe wall, thus requiring extremely high pressure resistance. The common material for conveying pipes in the prior art is rubber. However, in this embodiment, because the first conveying pipe 12 and the second conveying pipe 13 are nested together, pressure synchronization can be achieved, especially since the internal and external pressures of the first conveying pipe 12 can influence each other, thereby reducing the material requirements for the pipe wall of the first conveying pipe 12. Referring to one embodiment, the pressures of the first fluid channel 121 and the second fluid channel 131 are equal or close. Therefore, in terms of material selection, referring to one embodiment, the second conveying pipe 13 is made of a wear-resistant and pressure-resistant material, and the first conveying pipe 12 is made of a lightweight, thin-walled material. The following is an exemplary example of a specific product structure to demonstrate the technical effects mentioned in this embodiment. In the prior art, both the liquid tube and the air tube are made of rubber, and their inner diameters are 3 / 8" and 1 / 4" respectively. In this embodiment, the exemplary second delivery tube 13 is a liquid tube with an inner diameter of 1 / 2", which is about 1 / 3 larger than the original. The first delivery tube 12 is an air tube made of low-cost, lightweight, and thin PU material, with an outer diameter and inner diameter of 6*4mm, which is about 1 / 3 smaller than the original. Overall, the cost is reduced by 15-20% compared to using two tubes, the weight is significantly reduced, and the flow-equivalent area is significantly improved.

[0104] In addition to the nested arrangement of the first conveying pipe 12 and the second conveying pipe 13, the technical solution in this application also requires the cooperation of the sealing joint 11 to bring about the above-mentioned beneficial effects. The function of the sealing joint 11 is to deliver the different media in the nested conveying to the corresponding separate pipelines, thereby improving the adaptability to ordinary products, reducing the adaptation cost of existing products to the conveying pipe of this application, and further enhancing the promotional value of the conveying pipe of this application.

[0105] The following description focuses on the delivery pipe itself. The description of the interaction between the delivery pipe and the pipe fitting 20 is only for the purpose of better understanding some of the structure of the delivery pipe.

[0106] In one embodiment, the first fixing part 111 is provided with a stepped hole 1113 for the first conveying pipe 12 to pass through. The first fixing part 111 also includes a plug 1114 that cooperates with the stepped hole 1113. The plug 1114 is used to expand the diameter of the first conveying pipe 12 to clamp the first conveying pipe 12 and the stepped hole 1113.

[0107] The function of the stepped hole 1113 is to cooperate with the expanded diameter first delivery pipe 12, thereby cooperating with the plug 1114 to clamp the first delivery pipe 12. In specific design, the end of the stepped hole 1113 facing the first delivery pipe 12 is a small diameter hole, and the end that cooperates with the plug 1114 is a large diameter hole. The plug 1114 can maintain its fit with the stepped hole 1113 through interference fit, i.e., friction, or through threads, adhesive, welding, etc.

[0108] In the assembly direction of the stepped hole 1113 and the plug 1114, referring to one embodiment, the sealing joint 11 has opposite sides and is respectively one side facing the first delivery pipe 12 and the second delivery pipe 13. Figure 2c The right side of the middle) and the side opposite to the first conveying pipe 12 and the second conveying pipe 13 ( Figure 2c (on the left side of the middle), the stopcock 1114 is installed into the sealing joint 11 from the side of the sealing joint 11 facing away from the first delivery pipe 12 and the second delivery pipe 13 and mates with the stepped hole 1113.

[0109] The configuration in this embodiment facilitates both the installation of the stopcock 1114 and the disassembly and maintenance of the first delivery pipe 12 during use. When the stopcock 1114 separates from the stepped hole 1113, the first delivery pipe 12 can be extracted from the second delivery pipe 13 through the stepped hole 1113, further reducing the requirements for the material and performance parameters of the first delivery pipe 12.

[0110] Regarding the connection of the pipeline, referring to one embodiment, the stopcock 1114 is provided with a first through hole 1115 that connects the first fluid channel 121 and the first through hole 1111.

[0111] The first through hole 1115 establishes a connection between the first fluid channel 121 and the first through hole 1111. After the pipe body 10 and the pipe connector 20 are assembled, the first through hole 1111 connects to the first outlet 201 of the pipe connector 20, thereby enabling the output of the conveyed medium in the first fluid channel 121. The first through hole 1115 can be provided by a stopcock 1114 or by a first fixing part 111.

[0112] refer to Figure 2d In one embodiment, the stepped hole 1113 is open on the side opposite to the first conveying pipe 12 and mates with the plug 11141, the first through hole 1131 is open toward the plug 11141, and the plug 11141 closes the stepped hole 1113 to constrain the boundary of the first through hole 1131. Figure 2dAs shown, the first through-hole 1131 consists of two parts: an open portion on the plug 1114 and a closed portion on the first fixing part 111. The open portion on the plug 1114 communicates with the interior of the stepped hole 1113, and in this embodiment, this portion is closed using a plug 11141. The advantage of this design is that it ensures a seal while facilitating maintenance of the connection, and it is more conducive to the disassembly and maintenance of the first delivery pipe 12 mentioned above.

[0113] Furthermore, in the installation of the stopcock 1114, in addition to the method described above, the stopcock 1114 can also be positioned using the plug 11141. For example, a force-applying structure extending toward the stopcock 1114 can be provided on the plug 11141, so that during the installation of the plug 11141, the force-applying structure will hold the stopcock 1114 within the stepped hole 1113, thereby achieving the cooperation between the stopcock 114 and the stepped hole 1113 to clamp the first delivery pipe 12.

[0114] Regarding the connection method of the second fluid channel 131, referring to one embodiment, a neck 113 is provided between the first fixing part 111 and the second fixing part 112, and a second through hole 1131 connecting the second through hole 1112 and the second fluid channel 131 is provided on the neck 113.

[0115] The second through hole 1131 establishes a connection between the second fluid channel 131 and the second through hole 1112. After the pipe body 10 and the pipe connector 20 are assembled, the second through hole 1112 connects to the second outlet 202 of the pipe connector 20, thereby enabling the output of the conveyed medium within the second fluid channel 131. The necking of the neck 113, relative to the circumferential dimensions of the first fixing part 111 and the second fixing part 112, forms an accommodating space between the neck 113 and the corresponding connection area 203 of the pipe connector 20, and the second through hole 1112 connects to this accommodating space.

[0116] The isolation between the two fluid channels is achieved by a sealing element. Referring to one embodiment, the first fixing part 111 has two first sealing elements 1116 arranged side by side in the circumferential direction, and the first through hole 1111 is disposed between the two first sealing elements 1116.

[0117] A sealing space is formed on the two first seals 1116, which constrains the relationship between the first fixing part 111 and the pipe joint 20 connected thereto. When the first through hole 1111 and the first outlet 201 on the pipe joint 20 are aligned, the two first seals 1116 seal the communication boundary between them, thereby avoiding interference between the first fluid channel 121 and the second fluid channel 131.

[0118] In order to further improve the conveying effect and avoid the decrease in conveying capacity caused by circumferential misalignment, according to one embodiment, a first annular groove 1117 is provided on the circumferential surface of the first fixing part 111, two first sealing members 1116 are disposed on both sides of the first annular groove 1117, and the first through hole 1111 communicates with the first annular groove 1117.

[0119] The first annular groove 1117 can eliminate the alignment error between the first through hole 1111 and the first outlet 201, and also provide a buffer confluence space, thereby improving the conveying efficiency. In the attached figure, the connecting area 203 is provided with a second annular groove 1118 corresponding to the first annular groove 1117. The second annular groove 1118 has the same effect as the first annular groove 1117, and can further improve the effect of the first annular groove 1117.

[0120] Regarding the mutual isolation of the media transported by the first delivery pipe 12 and the second delivery pipe 13 within the sealing joint 11, referring to one embodiment, a second sealing element 1122 is provided circumferentially on the second fixing part 112, and a second through hole 1131 is disposed between the first sealing element 1116 and the second sealing element 1122. The second sealing element 1122 is used to cooperate with external accessories to constrain the boundary of the second through hole 1131. The flow areas of the first through hole 1115 and the first through hole 1111 are isolated from the flow areas of the second through hole 1131 and the second through hole 1112 by the first sealing element 1116.

[0121] The external component that mates with the second seal 1122 can be a separate component or a corresponding structure integrated into the sealing joint 11 itself. (See attached document.) Figure 2c In this design, there is actually an open space between the second via 1131 and the second through hole 1112. This space needs to be constrained to achieve closed-loop fluid transport. For example... Figure 1b In this solution, the space is sealed using an external pipe joint 20. In practice, the sealing of this space relies on the effectiveness of the first seal 1116 and the second seal 1122. The first seal 1116 and the second seal 1122 work together to constrain the boundary of the second through-hole 1131, while the first seal 1116 also isolates the media transported by the first delivery pipe 12 and the second delivery pipe 13. The structure of this embodiment can control the overall joint volume and internal complexity while achieving isolation between the two, facilitating production and assembly.

[0122] The above text focuses on describing the corresponding structure of the conveying pipe. For the conveying pipe to achieve the conveying effect, it requires the cooperation between the sealing joint 11 and the pipe joint 20. The following text will focus on explaining how the conveying pipe cooperates with the pipe joint 20.

[0123] Regarding the details of the mating of the sealing joint 11 and the pipe fitting 20, referring to one embodiment, the sealing joint 11 includes:

[0124] The first fixing part 111 is used to seal and connect the first conveying pipe 12 and to seal and connect with the pipe joint 20. The first fixing part 111 is provided with a first through hole 1111.

[0125] The second fixing part 112 is used to seal the connection of the second delivery pipe 13 and to seal the connection with the pipe joint 20.

[0126] The first fixing part 111 is sealed to the pipe joint 20 to achieve a sealed connection between the first fluid channel 121 and the first outlet 201. The second fixing part 112 is sealed to the pipe joint 20 to achieve a sealed connection between the second fluid channel 131 and the second outlet 202, thereby achieving stable delivery of the first fluid channel 121 and the second fluid channel 131.

[0127] Regarding the details of the pipe connector 20, referring to one embodiment, the pipe connector 20 includes a connection area 203 for receiving the sealing connector 11, a first outlet 201 and a second outlet 202 communicating into the connection area 203; a first fixing part 111 is disposed in the connection area 203 and seals against the inner wall of the connection area 203, and a second fixing part 112 covers the pipe connector 20 to close the connection area 203.

[0128] The connection area 203 accommodates the first fixing part 111, which provides a more stable connection for the first fixing part 111. The first fixing part 111 is provided with a first through hole 1111 and a second through hole 1112. The stable positional relationship of the first fixing part 111 can realize the stability of the positioning of the first through hole 1111 and the second through hole 1112, thereby ensuring the connection stability of each pipeline inside the gas-liquid two-phase water mist fire extinguisher and improving the delivery effect.

[0129] The second fixing part 112 covering the connection area 203 improves the connection strength and stability between the sealing joint 11 and the pipe joint 20. Simultaneously, the covering design enhances the sealing effect. Specifically, the covering can be implemented by providing a corresponding protruding structure on the second fixing part 112, or, as described below, by using the threaded connection part 1121. The threaded connection part 1121 can rotate relative to the second fixing part 112 but is axially limited, thus achieving the technical advantages of convenient assembly and effective fixing.

[0130] Regarding the spatial arrangement of the various pipelines, referring to one embodiment, the first delivery pipe 12 is aligned with the center of the first fixing part 111, and the second through hole 1112 is located on the radially outer side of the first fixing part 111 and passes through the first fixing part 111 in the axial direction of the pipe body 10.

[0131] The first delivery pipe 12 is centrally located relative to the second delivery pipe 13 and is nearly coaxial, which is beneficial to the stability of the second fluid channel 131. Therefore, in this embodiment, the first delivery pipe 12 is fixed at the center of the first fixing part 111 by the first fixing part 111. The specific structure can be referred to the setting of the stopcock 1114 and the stepped hole 1113 mentioned above. It is reasonable and preferred that the second through hole 1112 avoids the center position of the first delivery pipe 12. In terms of quantity, the effect of the second fluid channel 131 in conveying the medium can be improved by setting multiple second through holes 1112 on the first fixing part 111, or by increasing the diameter of the second through holes 1112.

[0132] Referring to the above, from the overall structure of the sealing joint 11, in one embodiment, the sealing joint 11 includes, in the axial direction of the pipe body 10, the following components in sequence:

[0133] The second fixing part 112 is used to seal the connection of the second delivery pipe 13 and to seal the connection with the pipe joint 20.

[0134] A threaded part 1121 is provided on the second fixing part 112 and is used to connect the pipe connector 20 and close the connection area 203 of the pipe connector 20.

[0135] The first fixing part 111 extends into the connecting area 203 and is sealed to the inner wall of the connecting area 203. The first fixing part 111 is used to seal the connection of the first conveying pipe 12. The first fixing part 111 is provided with a first through hole 1111 and a second through hole 1112.

[0136] In this embodiment, the sealing joint 11 can ensure a stable connection with the pipe joint 20 while ensuring the efficiency of internal pipeline distribution, thereby improving the overall performance of the gas-liquid two-phase water mist fire extinguisher.

[0137] In achieving the sealing between the two, referring to one embodiment, a portion of the second fixing part 112 extends into the connection area 203, and the circumferential surface of this portion has a second sealing member 1122, which is used to seal the connection area 203.

[0138] The specific effects of the first sealing element 1116 can be found in the relevant descriptions above, and will not be repeated here. Regarding the second sealing element 1122, it achieves the effect of sealing the connection area 203 of the second fixing part 112. Compared to achieving a sealing effect through a covering as described above, the second sealing element 1122 is located on the circumferential surface of the second fixing part 112, which can prevent sealing failure caused by movement between the pipe joint 20 and the sealing joint 11, resulting in a better sealing effect and superior operating feel.

[0139] In terms of the structural arrangement of the pipe connector 20 itself, referring to one embodiment, the pipe connector 20 includes a connection area 203 for accommodating at least a portion of the sealing connector 11, a first outlet 201 and a second outlet 202, wherein the first outlet 201 and the second outlet 202 are arranged coaxially, radially side by side, or in different orientations.

[0140] Referring to the attached diagram, the first outlet 201 and the second outlet 202 can be configured in various ways. They can be adjusted as needed according to actual requirements, and correspondingly, the media transported in the first fluid channel 121 and the second fluid channel 131 can also be adjusted as needed.

[0141] In this embodiment, a preferred structure is proposed. Referring to one embodiment, the axis of the first outlet 201 coincides with or is close to the axis of the connecting region 203. The first outlet 201, in this embodiment, is used to transport the liquid medium and requires a high flow rate; therefore, coinciding with the axis of the connecting region 203 can improve the flow rate of the transported medium. In actual products, due to appearance, manufacturing difficulty, processing errors, etc., there may be some error between the axes of the two, but in principle, the error is relatively small.

[0142] This application also discloses an assembly method for a gas-liquid two-phase water mist fire extinguisher, wherein the gas-liquid two-phase water mist fire extinguisher adopts any of the above-mentioned technical methods, and the assembly method includes:

[0143] Insert at least a portion of the sealing joint 11 into the connection area 203 of the pipe joint 20 until the sealing joint 11 closes the connection area 203;

[0144] Adjust the axial position of the first fixing part 111 until the first fluid channel 121, the first through hole 1111 and the first outlet 201 are connected, and the second fluid channel 131, the second through hole 1112 and the second outlet 202 are connected.

[0145] The key to the assembly is to ensure that the various pipelines are properly connected to each other, so that the pipelines can be made independent of each other under the action of the first seal 1116 and the second seal 1122.

[0146] This assembly method focuses on the assembly and disassembly of the gas-liquid two-phase water mist fire extinguisher during use. During production, the assembly between the sealing joint 11, the first delivery pipe 12, and the second delivery pipe 13 is required. The sealing joint 11 connects to the second delivery pipe 13 via its anti-detachment structure and pressure cap. The first delivery pipe 12 is assembled via the stopcock 1114 and the stepped hole 1113. The first delivery pipe 12 allows for convenient disassembly and maintenance during subsequent use. For details, please refer to the relevant descriptions above; they will not be repeated here.

[0147] In summary, the design of the connecting hose described above provides at least the following technical benefits:

[0148] 1. Reduce costs;

[0149] (1) It is easy to make and does not require clamps or cloth covers, thus reducing the corresponding costs;

[0150] (2) The original design used two hoses, which were installed separately, resulting in higher costs due to limitations in various performance parameters.

[0151] 2. Performance improvement; In existing technologies, hoses are usually made of rubber; The improved hose has a significantly increased effective flow area for the medium being transported, providing a larger flow rate and improving overall performance.

[0152] 3. Reduced volume; When using the retractable conveying pipe, the improved pipe body avoids the drawbacks of the original two hoses twisting together and taking up more space. The retracting on the turntable is neater and tighter, saving space. The reduced volume brings convenience in storage. At the same time, with the same turntable volume, the pipe body can be extended in terms of storage length by at least 20%.

[0153] The connecting hose enables the independent delivery of air and liquid sources; the coordination of other components is necessary to achieve the technical effects mentioned earlier in this application. (Refer to...) Figures 3a to 4d This application discloses a gas-liquid two-phase water mist fire extinguisher, including a housing 30, a storage tank 31 for storing fire extinguishing medium, a spray gun 32 for spraying fire extinguishing medium, and a delivery assembly 33 connecting the storage tank 31 and the spray gun 32.

[0154] The delivery assembly 33 includes a connecting hose 331 connecting the storage tank 31 and the spray gun 32, and a turntable 332 for receiving the connecting hose 331. The turntable 332 includes a bracket 333 for fixing, a receiving tray 334 rotatably mounted on the bracket 333, and a first locking mechanism 335 disposed on the bracket 333 for limiting the rotation of the receiving tray 334 relative to the bracket 333. A second locking mechanism 336 for controlling the opening or closing of the storage tank 31 is provided between the storage tank 31 and the connecting hose 331.

[0155] The gas-liquid two-phase water mist fire extinguisher also includes a triggering component 34 that is linked to the first locking mechanism 335 and / or the second locking mechanism 336. The triggering component 34 is configured as follows:

[0156] The spray gun 32 is detachably housed in a clip (not shown), and a triggering component 34 is disposed on the spray gun 32 and is triggered when the spray gun 32 is moved away from the clip; and / or

[0157] The gas-liquid two-phase water mist fire extinguisher also includes a shielding cover 301 for sealing the housing 30, and a triggering component 34 is disposed on the shielding cover 301 and is triggered when the shielding cover 301 is away from the housing 30.

[0158] The connection relationship between the housing 30 and each component in this embodiment is the same as that described above. For details, please refer to the specific description above, which will not be repeated here.

[0159] The first locking mechanism 335 locks the turntable 332. When the first locking mechanism 335 is locked, the rotating receiving tray 334 cannot rotate relative to the bracket 333, thus preventing the release of the connecting hose 331 and ensuring the stability of the connecting hose 331 under vehicle-mounted bumpy conditions. Correspondingly, the second locking mechanism 336 seals the storage tank 31, preventing the leakage of extinguishing medium under vehicle-mounted bumpy conditions. Under the action of the triggering component 34, when the spray gun 32 leaves the gun clip and / or the shielding cover 301 opens relative to the housing 30, the first locking mechanism 335 and the second locking mechanism 336 will release accordingly, making the gas-liquid two-phase water mist fire extinguisher of this application usable. The gun clip can be designed as a U-shaped clamp fixed on the housing 30 to hold the tubular part of the spray gun. This design can balance the stability when fixed and the convenience when separated.

[0160] In summary, the technical solution disclosed in this application solves the problem of cumbersome operation steps of fire extinguishing devices in the prior art by setting and linking the trigger component 34, the first locking mechanism 335 and the second locking mechanism 336. While ensuring the stability of each component under harsh vehicle conditions, it improves the efficiency of fire extinguishing and has positive significance for rapid response in fire extinguishing operations.

[0161] Regarding the configuration of the first locking mechanism 335, referring to one embodiment, the first locking mechanism 335 includes:

[0162] The keyhole 3351 is located on the receiving tray 334 and faces the bracket 333.

[0163] Locking pin 3352 is movably mounted on bracket 333. Locking pin 3352 has a locked state that engages with lock hole 3351 and an unlocked state that is separated from lock hole 3351.

[0164] Trigger component 34 is used to keep locking pin 3352 in the unlocked state.

[0165] The different states of the locking pin 3352 enable locking and unlocking of the storage tray 334 relative to the bracket 333. In one embodiment, the locking pin 3352 is provided with an elastic element (not shown) that holds it in the locked state. In a vehicle environment, this elastic element maintains the stability of the first locking mechanism 335. The trigger component 34 drives the locking pin 3352 to overcome the force of the elastic element, thereby releasing the lock. In the details shown in the figure, the direction of movement of the locking pin 3352 is perpendicular to the direction of rotation of the storage tray 334, thereby achieving the maximum locking torque of the locking pin 3352 and preventing accidental unlocking.

[0166] As can be seen from the above description, the retraction and unfolding of the connecting hose 331 are achieved through the turntable 332. Similarly, the transmission of different media by the connecting hose 331 can also be achieved through the turntable 332.

[0167] Referring to one embodiment, the turntable 332 includes a bracket 333 for fixing, a rotating shaft 3331 mounted on the bracket 333, and a receiving tray 334 mounted on the rotating shaft 3331. The receiving tray 334 is provided with a connecting compartment 3341 near the rotating shaft 3331. The rotating shaft 3331 is hollow inside and one end extends to the outside of the receiving tray 334 to connect with the storage tank, and the other end extends to the connecting compartment 3341 to connect with the pipe joint of the connecting hose.

[0168] The splice compartment 3341 is a space located within the receiving tray 334 for accommodating the joints of various pipelines. The splice compartment 3341 prevents the soft connecting pipes wrapped around the receiving tray 334 from affecting the joints. The advantage of the rotating shaft 3331 as a transmission medium channel is that it is not affected by the rotation of the turntable 332, thus enabling stable transmission.

[0169] The specific implementation of the transmission via the rotating shaft 3331 is described in one embodiment, where the rotating shaft 3331 is configured as follows:

[0170] The rotating shaft 3331 is hollow inside and has two conveying pipes to connect to the first conveying pipe and the second conveying pipe respectively;

[0171] Two shafts 3331 are provided, one of which is connected to the liquid storage container in the storage tank and the other is connected to the gas cylinder in the storage tank. The two shafts 3331 are located at one end of the connecting chamber 3341 and are connected to the first delivery pipe and the second delivery pipe respectively through hoses and pipe joints.

[0172] In the accompanying drawings, the media are transmitted separately via rotating shafts 3331 on both sides. This arrangement reduces component complexity, lowers cost, and simplifies accuracy requirements. The single-sided transmission of multiple media method mentioned in this embodiment offers the advantages of high integration and a more compact overall device.

[0173] As mentioned above regarding the locking mechanism, gas cylinders are generally pressure sources. In fire-fighting equipment, water can be obtained through independent components. However, in the vehicle-mounted field, circuit failure is very likely to occur during fire self-rescue. To improve the adaptability of the fire extinguishing device in this application, referring to one embodiment, the gas cylinder of the storage tank is provided with a first gas pipe connected to a pipe connector and a second gas pipe connected to a liquid storage container. The liquid storage container is provided with a pressure receiving port connected to the second gas pipe and a pressure releasing port connected to the pipe connector.

[0174] In summary, in this embodiment, the piping arrangement of the gas-liquid two-phase water mist fire extinguisher is as follows: it includes a gas path and a liquid path, wherein the gas path includes:

[0175] The first gas path runs from the gas cylinder and pressure reducing valve to the liquid storage container.

[0176] Second air line, from gas cylinder, pressure reducing valve, pipe joint, sealing joint, first delivery pipe, sealing joint connecting the other end of the hose, and pipe joint connecting the other end of the hose to the spray gun.

[0177] The liquid circuit includes: a self-storage container, a pipe joint, a sealing joint, a second delivery pipe, a sealing joint connecting the other end of the hose, and a pipe joint connecting the other end of the hose to the spray gun.

[0178] The second gas path and the liquid path merge inside the spray gun to form a two-phase gas-liquid water mist for fire extinguishing.

[0179] This setup offers better stability and greater adaptability. When the gas cylinder is used as the driving source for the liquid storage container, the high-pressure gas inside the cylinder needs to be reduced to medium pressure via a pressure reducing valve before use. For example, if the pressure inside the cylinder is 25 MPa, it needs to be reduced to 1-2 MPa before entering the liquid storage container. The liquid in the storage container then enters the spray gun driven by the reduced-pressure gas. The pressure reducing valves for the first and second gas paths can be shared or separate. In actual products, the pressure reducing valves can be integrated into the valve body of the gas cylinder or into the second locking mechanism.

[0180] In one embodiment, the second locking mechanism 336 is a valve disposed between the storage tank 31 and the connecting hose 331.

[0181] The valve has good sealing performance. To better achieve linkage with the trigger component 34, the rocker arm 3361 can be configured as shown in the attached figures. Regarding the details of the storage tank 31, referring to one embodiment, the storage tank 31 includes:

[0182] Liquid storage container 311 is used to store liquid fire extinguishing media;

[0183] Cylinder 312 is used to store gaseous fire extinguishing media;

[0184] The second locking mechanism 336 is provided at least between the gas cylinder 312 and the connecting hose 331.

[0185] In the use of fire extinguishing devices, the gas cylinder 312 is generally a pressure source, thus requiring a high degree of sealing. In some embodiments, both the liquid storage container 311 and the gas cylinder 312 are equipped with valves. Furthermore, in the face of fires caused by flammable materials such as gasoline, foam agents are needed for fire extinguishing. Therefore, in one embodiment, the storage tank 31 also includes a foam tank 313, and a controllable valve is provided between the foam tank 313 and the connecting hose 331. The controllable valve can be the second locking mechanism 336 mentioned above, or it can be an independent valve.

[0186] The first locking mechanism 335 and the second locking mechanism 336 require a trigger component 34 to unlock. Referring to one embodiment, the trigger component 34 includes...

[0187] The active end 341 is fixed to the spray gun 32 and / or the shielding cover 301;

[0188] The passive end 342 is fixed to the first locking mechanism 335 and / or the second locking mechanism 336;

[0189] The flexible connector 343 is connected between the active end 341 and the passive end 342 under stress.

[0190] The flexible connector 343 is used to transmit the torque received by the active end 341 to the passive end 342, thereby realizing the unlocking action of the first locking mechanism 335 and / or the second locking mechanism 336. The flexible connector 343 has the advantage of easy arrangement, but it is prone to jamming. Therefore, referring to one embodiment, the triggering component 34 further includes a plurality of guides 344, which are used to guide the force path of the flexible connector 343.

[0191] The guide 344, in principle, needs to enable the reversal of the flexible connector 343, which can be achieved by rollers mounted on the housing 30 or the shielding cover 301. The flexible connector 343 can be made of flexible metal rope or fiber rope.

[0192] When the active end 341 is mounted on the shielding cover 301, the opening range of the shielding cover 301 is small, which can be overcome by the elasticity of the flexible component itself or by a limiting mechanism. When the active end 341 is mounted on the spray gun 32, the flexible connector 343 may affect the movement of the spray gun 32. Referring to one embodiment, the triggering component 34 further includes a separation component 345 disposed on the flexible connector, which is used to disconnect the flexible connector 343 under a preset condition.

[0193] The separation component 345 can overcome the above problems, thereby ensuring that the spray gun 32 can be used to release the first locking mechanism 335 and / or the second locking mechanism 336, but will not affect the free movement of the spray gun 32 after the release action is completed.

[0194] The preset condition for the separation component 345 to separate is that when the separation component 345 is subjected to a tensile or pushing force greater than a preset value, the flexible connector 343 will disconnect. For example, the separation component 345 can be achieved by setting a weak point in the stress of the flexible connector 343, such as setting a part that is prone to breakage at a certain position on the flexible connection. However, this design will increase the maintenance cost of the fire extinguishing device. Alternatively, in one embodiment, the separation component 345 includes:

[0195] The first separation joint 3451 is a cylindrical shape with one end open and the other end closed. The closed end of the first separation joint 3451 is used to connect the flexible connector 343. The interior of the first separation joint 3451 is the mating area 3452.

[0196] The second separation connector 3453 has one end for connecting the flexible connector 343, and the other end is separable from the first separation connector 3451 through the mating area 3452.

[0197] When the first separating joint 3451 and the second separating joint 3453 are connected, they are actually an integral structure and function the same as the flexible connector 343. They are used to transmit torque. When the two separate through the mating area 3452, the flexible connector 343 is disconnected. At the same time, the flexible connector 343 can be easily reconnected after use, reducing maintenance costs.

[0198] Regarding the control of the separation torque, referring to one embodiment, the second separation joint 3453 is provided with a mating annular groove 3454, the inner sidewall of the mating area 3452 is provided with a radially protruding mating annular rib 3456, the sidewall of the mating annular groove 3454 is provided with a guide slope 3455, and the mating annular rib 3456 is a flexible component.

[0199] The slope of the guide ramp 3455 can control the separation torque between the two, and the height of the ring rib 3456 can also achieve the above function. As mentioned above, the ring rib 3456 is a flexible part, which can be understood as the ring rib 3456 being a material that is easily deformed, such as rubber or plastic, or it can be understood as the ring rib 3456 being a metal material with a low protrusion height.

[0200] Another preset scenario for the separation of the separation component 345 is that the flexible connector 343 disconnects when the separation component 345 interacts with a certain component. (See reference) Figure 4cIn the illustrated embodiment, the first separation joint 3451 is actually composed of a first component and a second component, wherein the main mating area 3452 is provided by the first component, and the second component covers the first component. In this embodiment, the mating ring rib 3456 releases the second separation joint 3453 through its own deformation or movement, and the deformation or movement of the mating ring rib 3456 is constrained by the second component. Only when the second component approaches the first component does the groove inside the second component align with the mating ring rib 3456, thereby releasing the deformation or movement stroke of the mating ring rib 3456. The advantage of this embodiment is that it can better achieve the connection between the first separation joint 3451 and the second separation joint 3453, ensuring that the separation assembly 345 will not separate before completing the unlocking action during use.

[0201] Simultaneously, the second component can also provide a trigger condition for the release action of the separation assembly 345. This trigger condition can better control the state of the flexible connector 343. Referring to one embodiment, the separation assembly 345 further includes a separation baffle 3457, which has a separation hole (not shown) inside. The flexible connector 343 passes through the separation hole, and the diameter of the separation hole is larger than the outer diameter of the second separation connector 3453 and smaller than the outer diameter of the first separation connector 3451.

[0202] The separation baffle 3457 acts on the second component through the outer edge of the separation hole, thereby satisfying the trigger condition for the release action of the separation assembly 345 and realizing the separation of the first separation joint 3451 and the second separation joint 3453. By applying precise force according to the dimensions, the separation operation of the separation assembly 345 can be achieved better, more accurately, and faster. At the same time, during the separation process of the separation assembly 345, the flexible connector 343 may be subjected to large stress. The setting of this embodiment can concentrate and release the stress on the separation assembly 345, rather than other parts, thus improving the stability of the separation action.

[0203] The following will exemplarily demonstrate the effectiveness of the fire extinguishing device described in this application. For example, a fire extinguishing device equipped with a gas cylinder 312 and a liquid storage container 311 becomes a two-phase gas-liquid fire extinguishing device. The liquid storage container 311 is pre-filled with 50 liters of water-based agent, which can be mixed with foaming agent. The gas cylinder 312 contains compressed air at a pressure of over 25 MPa, allowing operation for approximately 2 minutes. The fire extinguishing effect is equivalent to that of a 2000-liter ordinary water gun, especially effective in cooling fuel tanks, effectively protecting them from explosion. Adding foam further enhances its effectiveness in extinguishing leaked gasoline and diesel fires. In the event of a fire on a passenger bus, timely fire extinguishing can buy valuable escape time for most passengers. Generally, timely fire extinguishing within the first three minutes can extinguish the fire.

[0204] More importantly, when the turntable 332 is equipped with a connecting hose 331 of 30 meters or more, under the pressure of the aforementioned gas cylinder 312, the spray gun 32 can achieve a water mist range of over 10 meters. This not only addresses fires on any part of the vehicle itself but also extinguishes fires on other vehicles within a 40-meter radius. Based on this, by increasing the number of fire extinguishing devices installed in this application, and considering the current vehicle density on domestic highways, a mobile fire truck network can be essentially formed across the entire highway network. Within minutes of a fire breaking out, these trucks will always arrive at the scene, gaining valuable time for rescue operations.

[0205] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0206] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A gas-liquid two-phase water mist fire extinguisher, characterized in that, The device includes a housing, on which are provided a storage tank for storing extinguishing media, a spray gun for spraying extinguishing media, a triggering assembly, and a delivery assembly connecting the storage tank and the spray gun. The storage tank includes a liquid storage container and a gas cylinder. The delivery assembly includes a connecting hose connecting the storage tank and the spray gun, and a turntable for receiving the connecting hose; The connecting hose includes a hose body and a fitting for connecting the hose body and corresponding components. The hose body includes: a sealing fitting connected to the fitting, and a first and second delivery hose nested together. The first delivery pipe is located on the inner side and is hollow inside to form a first fluid channel; the second delivery pipe is located on the outer side and the radial gap between the first delivery pipe and the second delivery pipe forms a second fluid channel; the sealing joint has a first through hole communicating with the first fluid channel and a second through hole communicating with the second fluid channel, and the pipe joint has a first outlet communicating with the first through hole and a second outlet communicating with the second through hole; the second through hole is arranged along the axial direction of the pipe body, and the first through hole is arranged along the radial direction of the pipe body; the sealing joint includes a first fixing part and a second fixing part that are sealed and connected to the pipe joint, the first fixing part is used to seal and connect the first delivery pipe, and the first fixing part has the first through hole and the second through hole, and the second fixing part is used for sealing and connecting. The second delivery pipe has a stepped hole on the first fixing part for the first delivery pipe to pass through. The first fixing part also includes a plug that mates with the stepped hole. The plug is used to expand the diameter of the first delivery pipe to clamp the first delivery pipe and the stepped hole. The plug has a first through hole that connects the first fluid channel and the first through hole. A neck is provided between the first fixing part and the second fixing part. The neck has a second through hole that connects the second through hole and the second fluid channel. The pipe joint includes a connection area for receiving the sealing joint. The first outlet and the second outlet are connected to the connection area. The first fixing part is disposed in the connection area and seals against the inner wall of the connection area. The second fixing part covers the pipe joint to close the connection area.

2. The gas-liquid two-phase water mist fire extinguisher according to claim 1, characterized in that, The pipe fitting includes a connection area for accommodating at least a portion of the sealing joint, a first outlet, and a second outlet, wherein the first outlet and the second outlet are coaxially arranged, radially side by side, or oriented in different directions.

3. The gas-liquid two-phase water mist fire extinguisher according to claim 1, characterized in that, The turntable includes a bracket for fixing, a rotating shaft mounted on the bracket, a receiving tray mounted on the rotating shaft, and a first locking mechanism disposed on the bracket for restricting the rotation of the receiving tray relative to the bracket.

4. The gas-liquid two-phase water mist fire extinguisher according to claim 3, characterized in that, The triggering component is used to link the first locking mechanism and the second locking mechanism. The second locking mechanism is disposed between the storage tank and the connecting hose and is used to control the opening or closing of the storage tank. The triggering component includes an active end, a passive end, a flexible connector connected between the active end and the passive end, and a separation component. The active end is fixed to the spray gun and / or the shielding cover that closes the housing, and the passive end is fixed to the first locking mechanism and the second locking mechanism. The separation component includes a first separation joint with an internal mating area and a second separation joint that mates with the mating area. The first separation joint is cylindrical with one end open and the other end closed. The closed end of the first separation joint is used to connect to the flexible connector. One end of the second separation joint is used to connect to the flexible connector, and the other end is detachably connected to the first separation joint through the mating area.

5. The gas-liquid two-phase water mist fire extinguisher according to claim 4, characterized in that, The triggering component is configured as follows: The spray gun is detachably housed in a clip, and the triggering component is disposed on the spray gun and triggers when the spray gun is moved away from the clip; and / or The gas-liquid two-phase water mist fire extinguisher also includes a shielding cover for sealing the housing, and the triggering component is disposed on the shielding cover and triggers when the shielding cover moves away from the housing.

6. The gas-liquid two-phase water mist fire extinguisher according to claim 3, characterized in that, The rotating shaft is configured as follows: the rotating shaft is hollow inside and has two delivery pipes to be connected to the first delivery pipe and the second delivery pipe respectively; or, the rotating shaft has two shafts, one of which is connected to the liquid storage container and the other is connected to the gas cylinder, and the two rotating shafts are connected to the first delivery pipe and the second delivery pipe respectively through hoses and pipe joints.

7. The gas-liquid two-phase water mist fire extinguisher according to claim 6, characterized in that, The receiving tray is provided with a connecting compartment near the rotating shaft. The rotating shaft is hollow inside and one end extends to the outside of the receiving tray to connect with the storage tank, while the other end extends to the connecting compartment to connect with the pipe joint of the connecting hose.

8. The gas-liquid two-phase water mist fire extinguisher according to claim 1, characterized in that, The gas cylinder of the storage tank is provided with a first gas pipe connected to the pipe joint and a second gas pipe connected to the liquid storage container. The liquid storage container is provided with a pressure receiving port connected to the second gas pipe and a pressure releasing port connected to the pipe joint.

9. The gas-liquid two-phase water mist fire extinguisher according to claim 1, characterized in that, The gas-liquid two-phase water mist fire extinguisher is provided with a gas path and a liquid path, wherein the gas path includes: The first gas path runs from the gas cylinder and pressure reducing valve to the liquid storage container. Second air line, from gas cylinder, pressure reducing valve, pipe joint, sealing joint, first delivery pipe, sealing joint connecting the other end of the hose, and pipe joint connecting the other end of the hose to the spray gun. The liquid circuit includes: a self-storage container, a pipe joint, a sealing joint, a second delivery pipe, a sealing joint connecting the other end of the hose, and a pipe joint connecting the other end of the hose to the spray gun. The second gas path and the liquid path merge within the spray gun to form a two-phase gas-liquid water mist for fire extinguishing.

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