CN212548082U - Gas-liquid two-phase flow water mist fire extinguisher - Google Patents

Abstract

The application discloses a gas-liquid two-phase flow water mist fire extinguisher, which comprises a shell, wherein a storage tank for storing a fire extinguishing medium, a spray gun for spraying the fire extinguishing medium and a conveying assembly for connecting the storage tank and the spray gun are arranged on the shell; the conveying assembly comprises a storage tank, a connecting hose of the spray gun and a rotary table, the connecting hose comprises a pipe body and a pipe joint, the pipe joint is connected with a corresponding component, and the pipe body comprises: the pipe joint comprises a sealing joint connected with the pipe joint, and 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, quick response and higher popularization value.

Description

Gas-liquid two-phase flow water mist fire extinguisher

Technical Field

The application relates to the field of fire fighting equipment, in particular to a gas-liquid two-phase flow water mist fire extinguisher.

Background

In more than thirty years, the economy of China is rapidly developed, the highway network is densely distributed, the transportation industry is continuously and rapidly developed, and the vehicle density on the highway is also increased. Accompanying this, there are many traffic accidents, frequent fires, and few fires caused by circuit faults, hazardous chemical substance leakage, high temperature, and the like of the vehicle. In any case, the process of gradual fire spreading from the beginning, especially the initial three to five minutes, is a precious gold time for fire extinguishing and disaster relief, and some fuel tanks are extremely dangerous if the fire burns for more than three minutes.

At present, common vehicle-mounted fire extinguishers are generally dry powder fire extinguishers and the like, are short in service time and poor in fire extinguishing effect, and generally have difficulty in achieving a cooling effect. Once the fire extinguishment for the initial fire fails, only the fire brigade in the closest distance waits for rescue. At present, the waiting rescue time is usually longer, when a rescue vehicle arrives, the accident vehicle generally burns bear fire, especially leakage or explosion of a single fuel tank, or the vehicle is provided with dangerous chemicals, and trapped people which cannot escape from the collided bus in time are also provided, and a plurality of similar risk conditions prompt that the expressway needs timely, fast and effective fire extinguishing equipment to quickly extinguish fire and rescue the accident site. At present, motor fire extinguishing vehicles in high-speed service areas are reinforced in some places, but on one hand, the number of the vehicles is limited, the distance between the two service areas and an accident site is usually not short, the distance is generally dozens of kilometers or even dozens of kilometers, and on the other hand, the distance is longer in some mountain areas.

Therefore, there is a large distance between the existing fire extinguisher and the actual use requirements.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application discloses a gas-liquid two-phase flow water mist fire extinguisher, which comprises a shell, wherein a storage tank for storing a fire extinguishing medium, a spray gun for spraying the fire extinguishing medium and a conveying assembly for connecting the storage tank and the spray gun are arranged on the shell;

the conveying assembly comprises a storage tank, a connecting hose of the spray gun and a rotary table, the connecting hose comprises a pipe body and a pipe joint, the pipe joint is connected with a corresponding component, and the pipe body comprises: the pipe joint comprises a sealing joint connected with the pipe joint, and a first conveying pipe and a second conveying pipe which are nested with each other.

Optionally, the first conveying pipe is positioned inside and hollow inside to form a first fluid channel;

the second delivery pipe is positioned at the outer side, and a radial gap between the first delivery pipe and the second delivery pipe forms a second fluid channel;

the sealing joint is provided with a first through hole communicated with the first fluid channel and a second through hole communicated with the second fluid channel, and the pipe joint is provided with a first outlet communicated with the first through hole and a second outlet communicated with the second through hole;

one of the first through hole and the second through hole is arranged along the axial direction of the pipe body, and the other one is arranged along the radial direction of the pipe body.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the sealing joint comprises:

the first fixing part is used for being connected with the first conveying pipe in a sealing mode and connected with the pipe joint in a sealing mode, and a first through hole is formed in the first fixing part;

and the second fixing part is used for being connected with the second conveying pipe in a sealing manner and is connected with the pipe joint in a sealing manner.

Optionally, the first fixing portion is provided with a stepped hole through which the first conveying pipe penetrates, the first fixing portion further comprises a cock matched with the stepped hole, the cock is used for expanding the pipe diameter of the first conveying pipe so as to clamp the first conveying pipe and the stepped hole, and the cock is provided with a first via hole which communicates the first fluid channel and the first through hole.

Optionally, the first fixing portion is further provided with the second through hole.

Optionally, the pipe joint comprises a connection region for receiving the sealing joint, the first outlet and the second outlet communicating into the connection region; the first fixing portion is arranged in the connecting area and is in sealing fit with the inner side wall of the connecting area, and the second fixing portion covers the pipe joint to close the connecting area.

Optionally, the first conveying pipe is matched with the center of the first fixing portion, and the second through hole is formed in the radial outer side of the first fixing portion and penetrates through the first fixing portion in the axial direction of the pipe body.

Optionally, the sealing joint is in the axial of body includes in proper order:

the second fixing part is used for being connected with the second conveying pipe in a sealing mode and is connected with the pipe joint in a sealing mode;

a screw coupling portion provided on the second fixing portion for coupling the pipe joint and closing a coupling region of the pipe joint;

the first fixing part extends into the connecting area and is in sealing fit with the inner side wall of the connecting area, and the first fixing part is used for being in sealing connection with the first conveying pipe; the first fixing part is provided with a first through hole and a second through hole.

Optionally, a part of the second fixing portion extends into the connecting region, and a second sealing member is disposed on a peripheral surface of the part, and the second sealing member is used for closing the connecting region.

Optionally, the pipe joint comprises a connecting region for receiving at least a portion of the sealing joint, the first outlet and the second outlet being arranged coaxially or radially side by side or in different orientations.

Optionally, the axis of the first outlet coincides with or is close to the axis of the connection zone.

The application also discloses an assembly method of the connecting hose of the gas-liquid two-phase flow water mist fire extinguisher, the gas-liquid two-phase flow water mist fire extinguisher adopts any one of the technical methods, and the assembly method comprises the following steps:

inserting at least a portion of the sealing joint into a connection area of the pipe joint until the sealing joint closes the connection area;

adjusting an axial position of the first fixing portion until the first fluid passage, the first through hole, and the first outlet communicate, and the second fluid passage, the second through hole, and the second outlet communicate.

The application also discloses a gas-liquid two-phase flow water mist fire extinguisher, which comprises a shell, wherein a storage tank for storing fire extinguishing medium, a spray gun for spraying the fire extinguishing medium and a conveying assembly for connecting the storage tank and the spray gun are arranged on the shell;

the conveying assembly comprises a connecting hose for connecting the storage tank and the spray gun and a rotary table for accommodating the connecting hose, wherein the rotary table comprises a bracket for fixing, an accommodating disc rotatably mounted on the bracket and a first locking mechanism arranged on the bracket and used for limiting the accommodating disc to rotate relative to the bracket; a second locking mechanism for controlling the storage tank to be opened or closed is arranged between the storage tank and the connecting hose;

the gas-liquid two-phase flow water mist fire extinguisher further comprises a trigger assembly linked with the first locking mechanism and/or the second locking mechanism, and the trigger assembly is arranged in the following mode:

the spray gun is detachably accommodated on the gun clamp, and the trigger assembly is arranged on the spray gun and triggers when the spray gun is far away from the gun clamp; and/or

The gas-liquid two-phase flow water mist fire extinguisher further comprises a shielding cover for sealing the shell, and the trigger assembly is arranged on the shielding cover and triggers when the shielding cover is far away from the shell.

Optionally, the first locking mechanism comprises:

a locking hole provided on the accommodating tray and opened toward the holder;

the lock pin is movably arranged on the bracket in a penetrating way, and has a locking state of being clamped with the lock hole and a releasing state of being separated from the lock hole;

the trigger assembly is configured to maintain the locking pin in the unlocked state.

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

Optionally, the storage tank comprises:

a liquid storage container for storing a liquid fire extinguishing medium;

a gas cylinder for storing a gaseous extinguishing medium;

the second locking mechanism is disposed at least between the gas cylinder and the connection hose.

Optionally, the trigger component comprises

The driving end is fixed on the spray gun and/or the shielding cover;

a passive end fixed to the first locking mechanism and/or the second locking mechanism;

and the flexible connecting piece is in stressed connection between the driving end and the driven end.

Optionally, the trigger assembly further comprises a plurality of guides for guiding the force receiving path of the flexible connector.

Optionally, the trigger assembly further includes a separation assembly disposed on the flexible connection, and the separation assembly is configured to disconnect the flexible connection under a preset condition.

Optionally, the separation assembly includes:

the first separation joint is integrally in a cylinder shape with one open end and the other closed end, the closed end of the first separation joint is used for connecting the flexible connecting piece, and a matching area is arranged inside the first separation joint;

and one end of the second separation joint is used for connecting the flexible connecting piece, and the other end of the second separation joint is detachably connected with the first separation joint through a matching area.

Optionally, a matching ring groove is formed in the second separation joint, a radially protruding matching ring rib is arranged on the inner side wall of the matching area, a guide inclined plane is arranged on the side wall of the matching ring groove, and the matching ring rib is a flexible part.

Optionally, the separation assembly further comprises a separation baffle, a separation hole is formed in the separation baffle, the flexible connecting piece penetrates through the separation hole, and the aperture of the separation hole is larger than the outer diameter of the second separation joint and smaller than the outer diameter of the first separation joint.

Optionally, the carousel is including being used for fixed support, installing pivot on the support and through installing epaxial the dish of acceping, it is close to accept the dish near pivot is equipped with and refutes and connects the storehouse, inside cavity of pivot and one end extend to accept the dish outside and store the jar and be connected, the other end extends to refute connect the storehouse with coupling hose's coupling is connected.

Optionally, the rotating shaft is arranged as follows:

the rotating shaft is hollow and is provided with two conveying pipelines which are respectively connected with the first conveying pipe and the second conveying pipe;

the pivot be equipped with two and wherein one with the stock solution container in the storage jar is connected, another with the gas cylinder in the storage jar is connected, and two pivots are located the one end of refuting the storehouse is passed through the hose and is passed through the coupling respectively with first conveyer pipe with second duct connections.

Optionally, the gas cylinder of storage jar is equipped with the first trachea that the coupling is connected and the second trachea that links to each other with the liquid storage container, the liquid storage container be equipped with the pressure-receiving mouth that the second trachea links to each other and with the pressure release mouth that the coupling links to each other.

Optionally, the gas-liquid two-phase flow water smoke fire extinguisher is equipped with gas circuit and liquid circuit, and wherein the gas circuit includes:

the first gas path is from the gas cylinder and the pressure reducing valve to the liquid storage container;

the second gas path is from the gas cylinder, the pressure reducing valve, the pipe joint, the sealing joint, the first conveying pipe, the sealing joint at the other end of the connecting hose, and the pipe joint at the other end of the connecting hose to the spray gun;

wherein the liquid way includes: the automatic liquid storage device comprises a liquid storage container, a pipe joint, a sealing joint, a second conveying pipe and a sealing joint, wherein the sealing joint is connected with the other end of a hose, and the pipe joint at the other end of the hose is connected to a spray gun;

the second gas path and the liquid path are combined in the spray gun to form gas-liquid two-phase flow water mist for fire extinguishing.

The gas-liquid two-phase flow water mist fire extinguisher has the advantages of good fire extinguishing effect, high stability, quick response and higher popularization value.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1a is a schematic view of a connecting hose of a two-phase gas-liquid flow water mist fire extinguisher according to an embodiment;

FIG. 1b is an enlarged schematic view of one end of the connection hose of the gas-liquid two-phase flow water mist fire extinguisher shown in FIG. 1 a;

FIG. 1c is a schematic view of a pipe joint according to an embodiment;

FIG. 1d is a schematic view of another embodiment of a pipe joint;

FIG. 2a is a schematic view of a tube of the connection hose according to an embodiment;

FIG. 2b is an enlarged view of one end of the tube shown in FIG. 2 a;

FIG. 2c is a schematic view of the sealing joint of the connecting hose of FIG. 2 a;

FIG. 2d is a schematic view of the connection hose of FIG. 2a mated together;

FIG. 3a is a schematic view of a two-phase gas-liquid flow water mist fire extinguisher according to an embodiment;

FIG. 3b is a schematic view of the interior of the gas-liquid two-phase flow water mist extinguisher housing of FIG. 3 a;

FIG. 4a is a schematic view of a second locking mechanism and trigger assembly according to an embodiment;

FIGS. 4b and 4c are enlarged schematic views of the separation assembly of FIG. 4 a;

FIG. 4d is a schematic diagram of a first locking mechanism and a trigger assembly according to an embodiment.

The reference numerals in the figures are illustrated as follows:

10. a pipe body;

11. sealing the joint; 111. a first fixed part; 1111. a first through hole; 1112. a second through hole; 1113. a stepped bore; 1114. a cock; 11141. a plug; 1115. a first via hole; 1116. a first seal member; 1117. a first ring groove; 1118. a second ring groove; 112. a second fixed part; 1121. a screw connection part; 1122. a second seal member; 113. shrinking the neck part; 1131. a second via hole;

12. a first delivery pipe; 121. a first fluid channel;

13. a second delivery pipe; 131. a second fluid passage;

20. a pipe joint; 201. a first outlet; 202. a second outlet; 203. a connecting region;

30. a housing; 301. a shielding cover;

31. storing the tank; 311. a reservoir; 312. a gas cylinder; 313. a foam tank;

32. a spray gun;

33. a delivery assembly; 331. a connecting hose; 332. a turntable; 333. a support; 3331. a rotating shaft; 334. a receiving tray; 3341. a connecting bin; 335. a first locking mechanism; 3351. a lock hole; 3352. a lock pin; 336. a second locking mechanism; 3361. a rocker arm;

34. a trigger component; 341. an active end; 342. a passive end; 343. a flexible connector; 344. a guide; 345. a separation assembly; 3451. a first separation joint; 3452. a mating zone; 3453. a second disconnect fitting; 3454. matching the ring groove; 3455. a guide ramp; 3456. matching with a ring rib; 3457. separating the baffles.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, 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 in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1a to 2c, the present application discloses a gas-liquid two-phase flow water mist fire extinguisher, comprising a housing 30, a storage tank 31 for storing a fire extinguishing medium, a spray gun 32 for spraying the fire extinguishing medium, and a delivery assembly 33 connecting the storage tank 31 and the spray gun 32 are provided on the housing 30;

the delivery assembly 33 includes a connection hose 331 connecting the storage tank 31 and the spray gun 32, and a turntable 332 for receiving the connection hose 331, the connection hose 331 includes a pipe body 10 and a pipe joint 20 connected to the pipe body 10, and the pipe body 10 includes: the pipe joint comprises a sealing joint 11 connected with a pipe joint 20, a first conveying pipe 12 and a second conveying pipe 13 which are nested with each other.

The case 30 in the present embodiment has various forms, such as a closed box structure, for protecting various parts; for example, a semi-open type frame structure is favorable for taking and placing each part and connecting and arranging pipelines; such as a fully open support platform structure, etc. Thus, the term "disposed on the housing" as used herein is to be understood to refer to a broad relationship of connection, not a specific spatial relationship. For example, in some embodiments, the storage tank 31 includes a reservoir 311 and a gas bottle 312, and may be disposed outside the housing 30 when the reservoir 311 is bulky. The specific spatial relationship can be adjusted as required according to actual conditions.

The gas-liquid two-phase flow water mist is mainly separately transmitted through the connecting hose, so the principle and details of the arrangement of the connecting hose will be explained in detail below.

The first delivery pipe 12 and the second delivery pipe 13 define two mutually isolated delivery passages, namely a first fluid passage 121 and a second fluid passage 131, and the first fluid passage 121 and the second fluid passage 131 can respectively deliver two different media, namely liquid media and gaseous media, on the delivered media, so that the effect of water mist fire extinguishing is realized in the end use. The first duct 12 and the second duct 13, nested inside each other, overcome the technical problems of the prior art solutions with parallel double ducts.

Referring to an embodiment, the first delivery pipe 12 is located inside and hollow to form a first fluid channel 121;

the second delivery pipe 13 is located outside and the radial gap between the first delivery pipe 12 and the second delivery pipe 13 forms a second fluid passage 131;

the sealing joint 11 is provided with a first through hole 1111 communicated with the first fluid channel 121 and a second through hole 1112 communicated with the second fluid channel 131, and the pipe joint 20 is provided with a first outlet 201 communicated with the first through hole 1111 and a second outlet 202 communicated with the second through hole 1112;

one of the first through hole 1111 and the second through hole 1112 is disposed along an axial direction of the pipe body 10, and the other is disposed along a radial direction of the pipe body 10.

For example, in the flow equivalent area, the technical scheme of parallel double pipes in the prior art is limited by the limitation of the overall pipe diameter of the conveying pipe, so that the cross section of each single conveying pipe is smaller, and in this embodiment, the effective flow area of the single conveying pipe can be effectively increased under the condition that the overall pipe diameter of the conveying pipe is not changed by nesting the first conveying pipe 12 and the second conveying pipe 13. In the distribution of the flow equivalent areas of the first fluid channel 121 and the second fluid channel 131, referring to an embodiment, the equivalent flow area of the first fluid channel 121 is greater than or equal to or less than the equivalent flow area of the second fluid channel 131. The specific distribution of the two fluid channels can be set as required according to the difference of the physicochemical properties of the conveying medium, the change of the conveying efficiency and the adjustment of the conveying pressure.

For example, the delivery tube of the present embodiment also has advantages over the prior art in terms of weight. In the prior art, the pressure of each delivery pipe is maintained by the pipe wall of the delivery pipe, so that the pressure resistance is extremely high. The common conveying pipe in the prior art is made of rubber. However, in the present embodiment, because the first conveying pipe 12 and the second conveying pipe 13 are nested with each other, the synchronization of the pressures can be realized, and particularly, the internal pressure and the external pressure of the first conveying pipe 12 can be influenced with each other, so that the material requirement for the pipe wall of the first conveying pipe 12 is reduced. Referring to an embodiment, the pressure of the first fluid channel 121 and the second fluid channel 131 are equal or close. Therefore, in terms of material selection, referring to an embodiment, the second conveying pipe 13 is made of wear-resistant and pressure-resistant material, and the first conveying pipe 12 is made of lightweight and thin-walled material. The following exemplifies a specific product structure to show the technical effects mentioned in the present embodiment. Liquid pipe and trachea all adopt the rubber material among the prior art, and the internal diameter is 3/8 "and 1/4 respectively, and the second conveyer pipe 13 of the conveyer pipe of exemplification in this embodiment adopts 1/2 for liquid pipe and internal diameter, increase about 1/3 than original, and first conveyer pipe 12 is the trachea and adopts the PU material that the cost is lower, lighter, thin, and external diameter and internal diameter are 6 respectively 4mm, reduce about 1/3 than original, and comprehensive accounting, the cost drops 15-20% when comparing 2 hoses, and weight is showing and lightens, and the flow equivalent area promotes obviously.

The technical solution in the present application can bring the above-mentioned beneficial effects, in addition to the nested arrangement of the first delivery pipe 12 and the second delivery pipe 13, the matching of the sealing joint 11 is also required. The effect of sealing joint 11 lies in corresponding the different medium of carrying nested transport to separate pipeline in to improve the adaptation ability to ordinary product, reduce the adaptation cost of the conveyer pipe in this application of current product adaptation, further improve the spreading value of conveyer pipe in this application.

The following description focuses on the delivery tube itself and the associated description of the interaction of the delivery tube with the coupler 20 is only intended to provide a better understanding of a portion of the delivery tube structure.

In the arrangement of the sealing joint 11, referring to an embodiment, the first fixing portion 111 is provided with a stepped hole 1113 through which the first conveying pipe 12 passes, the first fixing portion 111 further includes a cock 1114 matched with the stepped hole 1113, and the cock 1114 is used for expanding the pipe diameter of the first conveying pipe 12 to clamp the first conveying pipe 12 and the stepped hole 1113.

The stepped bore 1113 serves to engage the first delivery tube 12 which is expanded in diameter, thereby engaging the tap 1114 to effect clamping of the first delivery tube 12. In specific setting, the one end of step hole 1113 towards first conveyer pipe 12 is the path hole, and the one end of cooperating with cock 1114 is the major diameter hole, and cock 1114 can be through interference fit friction force promptly and keep the cooperation with step hole 1113, also can keep the cooperation with step hole 1113 through modes such as screw thread, gluing, welding.

In the assembly direction of the stepped hole 1113 and the cock 1114, referring to an embodiment, the sealing joint 11 has two opposite sides and a side facing the first delivery pipe 12 and the second delivery pipe 13 (a right side in fig. 2 c) and a side facing away from the first delivery pipe 12 and the second delivery pipe 13 (a left side in fig. 2 c), respectively, and the cock 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 is engaged with the stepped hole 1113.

The arrangement in this embodiment can facilitate installation of the cock 1114, as well as disassembly and maintenance of the first delivery tube 12 during use of the delivery tube. After the cock 1114 and the stepped hole 1113 are separated, the first conveying pipe 12 can be drawn out from the second conveying pipe 13 through the stepped hole 1113, thereby further reducing the requirements on the material and performance parameters of the first conveying pipe 12.

In the connection relationship of the pipes, referring to an embodiment, the cock 1114 is provided with a first through hole 1115 communicating the first fluid passage 121 and the first through hole 1111.

The first via hole 1115 achieves a communicating relationship between the first fluid channel 121 and the first through hole 1111. The first through hole 1111 communicates with the first outlet 201 of the pipe joint 20 after the pipe body 10 is assembled with the pipe joint 20, thereby enabling the delivery of the transport medium in the first fluid passage 121. The first through hole 1115 may be provided by the cock 1114 or by the first fixture 111.

Referring to fig. 2d, in one embodiment, stepped bore 1113 is open on a side facing away from first delivery tube 12 and is engaged with plug 11141, first via 1131 is open toward plug 11141, and plug 11141 closes stepped bore 1113 to bound first via 1131. As shown in fig. 2d, the first through hole 1131 is formed by two parts, one part is an open part on the cock 1114, and the other part is a closed part on the first fixing part 111. Wherein the open portion of the cock 1114 is in communication with the interior of the stepped bore 1113, and the closure of this portion is accomplished by the plug 11141 in this embodiment. The above arrangement has the advantage of ensuring a seal while facilitating maintenance of the fit, and is more advantageous for the removal and maintenance of the first delivery tube 12 as mentioned above.

Further, upon installation of the cock 1114, positioning of the cock 1114 may be accomplished by the plug 11141, in addition to the manner described above. For example, biasing structure extending toward plug 1114 may be provided on plug 11141 such that plug 1114 is retained within stepped bore 1113 by the biasing structure during installation of plug 11141 in place, thereby providing mating clamping of plug 114 and stepped bore 1113 to first delivery tube 12.

In the communication manner of the second fluid channel 131, referring to an embodiment, a necking portion 113 is disposed between the first fixing portion 111 and the second fixing portion 112, and a second through hole 1131 for communicating the second through hole 1112 with the second fluid channel 131 is disposed on the necking portion 113.

The second via 1131 realizes a communication relationship between the second fluid channel 131 and the second via 1112. The second through hole 1112 is communicated with the second outlet 202 of the pipe joint 20 after the pipe body 10 is assembled with the pipe joint 20, thereby realizing the output of the conveying medium in the second fluid channel 131. The constriction of the constriction portion 113 is arranged relative to the circumferential dimensions of the first fixing portion 111 and the second fixing portion 112, so that a receiving space is formed between the constriction portion 113 and the corresponding connecting region 203 of the pipe joint 20, and the second through hole 1112 is in communication with the receiving space.

The separation of the two fluid channels is realized by a sealing element. Referring to an embodiment, two first sealing members 1116 are disposed side by side on the circumference of the first fixing portion 111, and the first through hole 1111 is disposed between the two first sealing members 1116.

The first sealing members 1116 form a sealing space for restricting the relation between the first fixing portion 111 and the pipe joint 20 connected thereto, and when the first through hole 1111 is aligned with the first outlet 201 of the pipe joint 20, the first sealing members 1116 seal the communication boundary therebetween, thereby preventing interference between the first fluid passage 121 and the second fluid passage 131.

In order to further improve the conveying effect and avoid the conveying capability reduction caused by the circumferential dislocation, referring to an embodiment, the circumferential surface of the first fixing portion 111 is provided with a first annular groove 1117, the two first sealing members 1116 are disposed on two sides of the first annular groove 1117, and the first through hole 1111 is communicated with the first annular groove 1117.

The first ring groove 1117 can eliminate the alignment error between the first through hole 1111 and the first outlet 201, and also can provide a buffering confluence space, thereby improving the conveying efficiency. In the drawing, the second annular groove 1118 corresponding to the first annular groove 1117 is provided in the connecting region 203, and the action of the second annular groove 1118 on the first annular groove 1117 can further improve the action effect of the first annular groove 1117.

In terms of the mutual isolation of the media conveyed by the first conveying pipe 12 and the second conveying pipe 13 in the sealing joint 11, referring to an embodiment, a second sealing element 1122 is arranged on the circumference of the second fixing portion 112, the second through hole 1131 is arranged between the first sealing element 1116 and the second sealing element 1122, the second sealing element 1122 is used for cooperating with an external fitting to constrain the boundary of the second through hole 1131, and 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 through the first sealing element 1116.

Where the external component that mates with the second seal 1122 may be a separate component or a corresponding structure to the sealing joint 11 itself. In the embodiment of fig. 2c, there is actually an open space between the second via 1131 and the second via 1112, and the space needs to be constrained to allow the fluid to be transported in a closed manner. For example, in the solution of fig. 1b, the closing of the space is achieved by means of an external pipe connection 20. In fact, the enclosure of this space depends on the effect of the first and second seals 1116, 1122. The first and second seals 1116 and 1122 cooperatively bound the boundaries of the second via 1131, while the first seal 1116 also provides isolation for isolating the media transported in the first and second transport tubes 12 and 13. The structure of this embodiment can realize both keeping apart while control holistic joint volume and inside complexity, convenient production easily assembles.

In the above, the corresponding structure of the delivery pipe is described with emphasis on the delivery effect, the fitting between the sealing joint 11 and the pipe joint 20 is required for the delivery pipe, and hereinafter, the description will be given with emphasis on how the delivery pipe is fitted to the pipe joint 20.

In the details of the mating of the sealing joint 11 and the pipe joint 20, with reference to an embodiment, the sealing joint 11 comprises:

the first fixing part 111 is used for being connected with the first conveying pipe 12 in a sealing mode and is connected with the pipe joint 20 in a sealing mode, and a first through hole 1111 is formed in the first fixing part 111;

and a second fixing portion 112 for sealing connection of the second delivery pipe 13 and the pipe joint 20.

The first fixing portion 111 is sealingly connected to the pipe joint 20 to achieve a sealing connection between the first fluid passage 121 and the first outlet 201, and the second fixing portion 112 is sealingly connected to the pipe joint 20 to achieve a sealing connection between the second fluid passage 131 and the second outlet 202, thereby achieving a stable conveyance of the first fluid passage 121 and the second fluid passage 131.

In the arrangement details of the pipe joint 20, with reference to an embodiment, the pipe joint 20 includes a connection region 203 for housing the sealing joint 11, and the first outlet 201 and the second outlet 202 communicate into the connection region 203; the first fixing portion 111 is disposed at the connection region 203 and is in sealing engagement with an inner sidewall of the connection region 203, and the second fixing portion 112 is disposed at the pipe joint 20 to close the connection region 203.

The connection region 203 is provided with the first fixing portion 111, so that a more stable connection mode can be provided for the first fixing portion 111, the first fixing portion 111 is provided with the first through hole 1111 and the second through hole 1112, the first through hole 1111 and the second through hole 1112 can be positioned stably due to the stable position relation of the first fixing portion 111, the connection stability of all pipelines in the gas-liquid two-phase flow water mist fire extinguisher is ensured, and the conveying effect is improved.

The provision of the second fixing portion 112 covering the connection region 203 can improve the connection strength and stability between the sealing joint 11 and the pipe joint 20. Meanwhile, the arrangement mode of the cover can improve the sealing effect. In a specific implementation of the covering, the second fixing portion 112 may be provided with a corresponding protruding structure, and may also be implemented by the screw portion 1121 as described below. The screw portion 1121 can rotate relative to the second fixing portion 112 but is axially limited, so that technical advantages of convenience in assembly and fixing effect can be achieved.

In the spatial arrangement details of the pipelines, referring to an embodiment, the first delivery pipe 12 is matched with the central position of the first fixing portion 111, and the second through hole 1112 is arranged on the radial outer side of the first fixing portion 111 and penetrates the first fixing portion 111 in the axial direction of the pipe body 10.

The first delivery pipe 12 is disposed centrally with respect to the second delivery pipe 13 and is near the coaxial state, and can contribute to the stabilization of the second fluid passage 131. Therefore, in the present embodiment, the first delivery pipe 12 is fixed at the central position of the first fixing portion 111 by the first fixing portion 111, and the specific structure can refer to the arrangement of the cock 1114 and the stepped hole 1113 described above. It is reasonably preferable that the second through holes 1112 are displaced from the center of the first transport pipe 12, and in terms of number, the effect of transporting the medium in the second fluid channel 131 can be enhanced by providing a plurality of second through holes 1112 in the first fixing portion 111, or the effect can be achieved by enlarging the diameter of the second through holes 1112.

Referring to the above, from the viewpoint of the overall structure of the sealing joint 11, in one embodiment, the sealing joint 11 sequentially includes, in the axial direction of the pipe body 10:

a second fixing portion 112 for hermetically connecting the second delivery pipe 13 and the pipe joint 20;

a screw-in portion 1121 provided at the second fixing portion 112 for connecting the pipe joint 20 and closing a connection region 203 of the pipe joint 20;

the first fixing part 111 extends into the connecting area 203 and is in sealing fit with the inner side wall of the connecting area 203, and the first fixing part 111 is used for being connected with the first conveying pipe 12 in a sealing mode; the first fixing portion 111 is provided with a first through hole 1111 and a second through hole 1112.

In this embodiment, the sealing joint 11 can ensure stable connection with the pipe joint 20 while ensuring the distribution efficiency of the internal pipeline, thereby improving the use effect of the whole gas-liquid two-phase flow water mist fire extinguisher.

In terms of the implementation of the two seals, in an embodiment, a portion of the second fixing portion 112 extends into the connection region 203, and a second sealing member 1122 is disposed on a peripheral surface of the portion, and the second sealing member 1122 is used for closing the connection region 203.

The specific effect of the first seal 1116 can be referred to in the above description, and will not be described in detail. As for the second sealing member 1122, the second sealing member 1122 achieves an effect that the second fixing portion 112 closes the connection region 203. Compared to the sealing effect achieved by the covering, the second sealing member 1122 is disposed on the circumferential surface of the second fixing portion 112, so that the sealing failure caused by the movement between the pipe joint 20 and the sealing joint 11 can be avoided, the sealing effect is better, and the operation feeling is excellent.

In the structural arrangement of the pipe coupling 20 itself, with reference to an embodiment, the pipe coupling 20 comprises a connection region 203 for housing at least part of the sealing joint 11, a first outlet 201 and a second outlet 202, the first outlet 201 and the second outlet 202 being arranged coaxially or radially side by side or in different orientations.

Referring to the drawings, the arrangement of the first outlet 201 and the second outlet 202 has various manners. It is possible to adjust the media transported in the first fluid channel 121 and the second fluid channel 131 as required according to actual needs.

In the present embodiment, a preferable structure is proposed. Referring to an embodiment, the axis of the first outlet 201 coincides with or is close to the axis of the connection zone 203. The first outlet 201 is used for conveying the liquid-phase medium in this embodiment, and a high flow rate is required, so that the flow rate of the conveying medium can be increased by the fact that the axis of the connecting region 203 coincides with the first outlet. In actual products, certain errors can occur on the axes of the two due to reasons such as appearance, manufacturing difficulty, machining errors and the like, but in principle, the errors of the two are small.

The application also discloses an assembly method of the gas-liquid two-phase flow water mist fire extinguisher, the gas-liquid two-phase flow water mist fire extinguisher adopts any one of the technical methods, and the assembly method comprises the following steps:

inserting 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;

the axial position of the first fixing portion 111 is adjusted until the first fluid channel 121, the first through hole 1111 and the first outlet 201 are communicated, and the second fluid channel 131, the second through hole 1112 and the second outlet 202 are communicated.

The point of assembly is that the conduits are interconnected in place so that the conduits are independent of each other by the action of the first and second seals 1116, 1122.

The assembling method is mainly characterized in that the gas-liquid two-phase flow water mist fire extinguisher is assembled and disassembled in the using process. During production, the sealing joint 11 and the first delivery pipe 12 and the second delivery pipe 13 need to be assembled, the sealing joint 11 is connected with the second delivery pipe 13 through a self anti-dropping structure and a pressing cap, and the first delivery pipe 12 is assembled through the cock 1114 and the stepped hole 1113. The first delivery tube 12 can be conveniently removed and maintained for subsequent use. The above related expressions can be specifically referred to, and are not repeated herein.

In summary, the arrangement of the connection hose at least includes the following technical effects:

1. the cost is reduced;

(1) the manufacturing is simple, no hoop or cloth sleeve is needed, and the corresponding cost is reduced;

(2) the original design adopts 2 hoses which are independently arranged, so that the cost is higher under the limit of various performance parameter indexes;

2. performance is improved; in the prior art, the hose is usually made of rubber; compared with the prior art, the improved effective flow area of the conveying medium in the conveying pipe is effectively increased, larger flow is provided, and the integral use performance is promoted;

3. the volume is reduced; when the conveying pipe is folded and twisted after being used, the improved pipe body avoids the defects that the two original hoses are twisted mutually and occupy more space, and the folded and twisted pipe is neater and tighter on the rotary table, so that the space is saved; the volume is reduced, the storage is convenient, and the storage length of the pipe body can be lengthened by at least 20% under the condition that the rotary disc has the same volume.

The connection hose realizes the delivery of independent air source and liquid source, other components are matched to realize the technical effect mentioned earlier in the application, and referring to fig. 3a to 4d, the application discloses a gas-liquid two-phase flow water mist fire extinguisher, which comprises a shell 30, wherein a storage tank 31 for storing fire extinguishing medium, a spray gun 32 for spraying fire extinguishing medium and a delivery assembly 33 for connecting the storage tank 31 and the spray gun 32 are arranged on the shell 30;

the conveying assembly 33 comprises a connecting hose 331 for connecting the storage tank 31 and the spray gun 32 and a rotary table 332 for accommodating the connecting hose 331, wherein the rotary table 332 comprises a bracket 333 for fixing, an accommodating disc 334 rotatably mounted on the bracket 333 and a first locking mechanism 335 arranged on the bracket 333 for limiting the accommodating disc 334 to rotate relative to the bracket 333; a second locking mechanism 336 for controlling the opening or closing of the storage tank 31 is arranged between the storage tank 31 and the connecting hose 331;

the gas-liquid two-phase flow water mist fire extinguisher further comprises a trigger assembly 34 linked with the first locking mechanism 335 and/or the second locking mechanism 336, and the trigger assembly 34 is arranged as follows:

the spray gun 32 is detachably accommodated on a gun holder (not shown), and the trigger assembly 34 is arranged on the spray gun 32 and triggers when the spray gun 32 is far away from the gun holder; and/or

The gas-liquid two-phase flow water mist fire extinguisher further comprises a shielding cover 301 for closing the housing 30, and the trigger assembly 34 is disposed on the shielding cover 301 and is triggered when the shielding cover 301 is away from the housing 30.

The connection relationship between the housing 30 and each component in this embodiment is the same as that understood above, and specific reference may be made to the above specific description, which is not repeated herein.

The first locking mechanism 335 locks the rotating disc 332, and when the first locking mechanism 335 is locked, the rotating accommodating disc 334 cannot rotate relative to the bracket 333, so that the connecting hose 331 cannot be released, and the stability of accommodating the connecting hose 331 in a vehicle-mounted bumping environment is ensured. Accordingly, the second locking mechanism 336 provides for closure of the storage tank 31 without loss of the fire extinguishing medium in a vehicle-mounted bumpy environment. When the spray gun 32 is separated from the gun holder and/or the shielding cover 301 is opened relative to the housing 30 under the action of the trigger assembly 34, the first locking mechanism 335 and the second locking mechanism 336 are correspondingly unlocked, so that the gas-liquid two-phase flow water mist fire extinguisher can be used. The gun clip can be designed into a U-shaped clip holder fixed on the shell 30 and used for clamping the tubular part of the spray gun, and the design can give consideration to the stable effect during fixation and the convenient effect during separation.

The technical scheme who discloses this application is seen in the synthesis through the setting and the linkage of trigger component 34, first locking mechanical system 335 and second locking mechanical system 336, has solved the loaded down with trivial details problem of extinguishing device operating procedure among the prior art, has improved the work efficiency of putting out a fire when guaranteeing the stability of on-vehicle abominable operating mode down each part, and quick response has positive meaning in the operation of putting out a fire.

In the arrangement of the first locking mechanism 335, referring to an embodiment, the first locking mechanism 335 includes:

a lock hole 3351 provided in the accommodating tray 334 and opened toward the holder 333;

the lock pin 3352 is movably arranged on the bracket 333 in a penetrating way, and the lock pin 3352 has a locking state of being clamped with the lock hole 3351 and a releasing state of being separated from the lock hole 3351;

trigger assembly 34 is used to hold lock pin 3352 in the unlocked state.

The different positions of the locking pin 3352 enable locking and unlocking of the receiving tray 334 relative to the bracket 333. In one embodiment, lock pin 3352 is provided with a resilient member (not shown) that maintains itself in a locked position, which maintains the stability of first locking mechanism 335 in an on-board environment. The action of trigger assembly 34 drives locking pin 3352 against the force of the resilient member to effect release. In the illustrated details, the direction of movement of lock pin 3352 is maintained perpendicular to the direction of rotation of housing tray 334 to achieve maximum locking torque of lock pin 3352 to avoid accidental unlocking.

As can be seen from the above description, the connection hose 331 is accommodated and unfolded by the rotating disc 332, and similarly, the connection hose 331 can be used for transmitting different media by the rotating disc 332.

Referring to an embodiment, the rotary plate 332 includes a bracket 333 for fixing, a rotary shaft 3331 mounted on the bracket 333, and a receiving plate 334 mounted on the rotary shaft 3331, the receiving plate 334 is provided with a docking chamber 3341 near the rotary shaft 3331, the rotary shaft 3331 is hollow and has one end extending to the outside of the receiving plate 334 to be connected to a storage tank and the other end extending to the docking chamber 3341 to be connected to a pipe joint of a connection hose.

The docking bay 3341 is a space provided in the receiving tray 334 for installing a joint of each pipe, and the installation of the docking bay 3341 can prevent the connection hose wound around the receiving tray 334 from affecting the joint. The rotary shaft 3331 as a transmission medium passage has an advantage of not being affected by the rotation of the turntable 332, thereby enabling stable transmission.

In a specific implementation of the transmission of the rotating shaft 3331, referring to an embodiment, the rotating shaft 3331 is configured as follows:

the rotating shaft 3331 is hollow and has two conveying pipelines to connect the first conveying pipe and the second conveying pipe respectively;

the rotating shafts 3331 are provided with two rotating shafts 3331, one of the two rotating shafts 3331 is connected with a liquid storage container in the storage tank, the other rotating shaft 3331 is connected with a gas cylinder in the storage tank, and one ends of the two rotating shafts 3331, which are positioned in the connection cabin 3341, are respectively connected with the first conveying pipe and the second conveying pipe through hoses through pipe joints.

In the drawing, the separated transmission of the media is realized by the rotating shafts 3331 on two sides, and the arrangement has the advantages that the complexity of components can be reduced, and the requirements on cost and precision are reduced. The method for transmitting multiple media on one side in the embodiment has the advantages of high integration level and more compact device as a whole.

As mentioned above in relation to the locking mechanism, the gas cylinder is typically the pressure source. In fire-fighting equipment, can select to realize acquireing of water source through independent part, but at on-vehicle field, when the fire is on fire and is saving oneself, the condition that the circuit became invalid is probably appeared, in order to improve extinguishing device's adaptability in this application, refer to an embodiment, the gas cylinder of storage jar is equipped with the first trachea of being connected with the coupling and the second trachea that links to each other with the stock solution container, and the stock solution container is equipped with the pressurized mouth that links to each other with the second trachea and the pressure release mouth that links to each other with the coupling.

In summary, in this embodiment, the pipelines in the gas-liquid two-phase flow water mist fire extinguisher are provided with a gas circuit and a liquid circuit, wherein the gas circuit includes:

the first gas path is from the gas cylinder and the pressure reducing valve to the liquid storage container;

the second gas path is from the gas cylinder, the pressure reducing valve, the pipe joint, the sealing joint, the first conveying pipe, the sealing joint at the other end of the connecting hose, and the pipe joint at the other end of the connecting hose to the spray gun;

wherein the liquid way includes: the automatic liquid storage device comprises a liquid storage container, a pipe joint, a sealing joint, a second conveying pipe and a sealing joint, wherein the sealing joint is connected with the other end of a hose, and the pipe joint at the other end of the hose is connected to a spray gun;

the second gas path and the liquid path are merged in the spray gun to form gas-liquid two-phase flow water mist for fire extinguishing.

The setting has better stability and higher adaptability. When the gas cylinder is used as a driving source of the liquid storage container, high-pressure gas in the gas cylinder needs to be decompressed to medium pressure through a pressure reducing valve for use, for example, the pressure in the gas cylinder is 25MPa, the gas cylinder needs to be decompressed to 1-2 MPa through the pressure reducing valve and then enters the liquid storage container, and liquid in the liquid storage container enters the spray gun under the driving of the decompressed gas. The pressure reducing valve of the first air passage and the pressure reducing valve of the second air passage may be shared or may be separately provided. In a practical product, the pressure reducing valve may be integrated on the valve body of the gas cylinder or on the second locking mechanism.

In the arrangement of the second locking mechanism 336, referring to an embodiment, the second locking mechanism 336 is a valve disposed between the storage tank 31 and the connection hose 331.

The valve has good sealing performance. For better linkage with the trigger assembly 34, reference may be made to a rocker arm 3361 in the manner shown in the drawings. In the details of the arrangement of the storage tank 31, referring to an embodiment, the storage tank 31 includes:

a liquid storage container 311 for storing a liquid fire extinguishing medium;

a gas cylinder 312 for storing gaseous extinguishing medium;

the second locking mechanism 336 is provided at least between the gas cylinder 312 and the connection hose 331.

In use of the fire suppression apparatus, the gas cylinder 312 is typically the source of pressure and therefore has a high sealing requirement. In some embodiments, the reservoir 311 and the gas cylinder 312 are each provided with a valve. Further, in the case of a fire caused by combustible materials such as gasoline, a foaming agent is required to perform a fire extinguishing operation. Therefore, in one embodiment, the storage tank 31 further comprises a foam tank 313, and a controllable valve is arranged between the foam tank 313 and the connection hose 331. The controllable valve may be the second locking mechanism 336 described above, or may be a separate valve.

The first and second locking mechanisms 335 and 336 require unlocking by the trigger assembly 34. Referring to one embodiment, the trigger assembly 34 includes

An active end 341 fixed to the spray gun 32 and/or the shield cover 301;

a passive end 342 secured to the first locking mechanism 335 and/or the second locking mechanism 336;

and a flexible connecting member 343 forcedly connected between the active end 341 and the passive end 342.

The flexible connecting member 343 is used for transmitting 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 provision of the flexible connector 343 has the advantage of ease of deployment, but is prone to jamming. Thus, referring to one embodiment, the trigger assembly 34 further includes a plurality of guides 344, the guides 344 being used to guide the force path of the flexible linkage 343.

The guide 344 is in principle required to enable the reversal of the flexible connection 343, which can be achieved by means of rollers provided on the housing 30 or on the screening cover 301. The flexible connecting member 343 may be a flexible metal or fiber rope.

When the active end 341 is disposed on the shielding cover 301, the opening range of the shielding cover 301 is small, and the opening range can be overcome by the elasticity of the flexible member or the limiting mechanism. When the active end 341 is disposed on the lance 32, the flexible linkage 343 may affect the movement of the lance 32. Referring to an embodiment, the trigger assembly 34 further includes a disconnecting assembly 345 disposed on the flexible link, the disconnecting assembly 345 for disconnecting the flexible link 343 in a predetermined case.

The release assembly 345 overcomes the above-described problems to ensure that the spray gun 32 can be used to unlock the first locking mechanism 335 and/or the second locking mechanism 336, but does not interfere with the free movement of the spray gun 32 after the unlocking action is completed.

The predetermined condition for the detachment of the detachment assembly 345 may be that the flexible connector 343 is disconnected when the detachment assembly 345 is subjected to a pulling or pushing force greater than a predetermined value. For example, the decoupling assembly 345 may be implemented by providing a stress-weakening of the flexible connector 343, such as a location on the flexible connector that is susceptible to breakage, but this design may increase the maintenance cost of the fire suppression apparatus. Also referring to an embodiment, the separating assembly 345 includes:

a first separation joint 3451 integrally formed in a cylindrical shape with one end open and the other end closed, the closed end of the first separation joint 3451 being used for connecting the flexible connecting member 343, and the inside of the first separation joint 3451 being a fitting area 3452;

the second separation joint 3453 has one end for connecting the flexible connecting member 343 and the other end detachably connected to the first separation joint 3451 through the fitting area 3452.

When the first and second separation joints 3451 and 3453 are connected, they are substantially of a unitary structure and function as the flexible connection member 343. The flexible connecting piece 343 is used for transmitting torque, when the two are separated through the matching area 3452, disconnection of the flexible connecting piece 343 is realized, reconnection of the flexible connecting piece 343 can be conveniently realized after use is finished, and maintenance cost is reduced.

In terms of controlling the separating moment, in an embodiment, the second separating joint 3453 is provided with a matching ring groove 3454, the inner sidewall of the matching region 3452 is provided with a radially protruding matching ring rib 3456, the sidewall of the matching ring groove 3454 is provided with a guiding inclined plane 3455, and the matching ring rib 3456 is a flexible member.

The slope of the guiding ramp 3455 controls the separation moment between the two components, and the height of the ring rib 3456 also controls the above function. As mentioned above, the flexible part of the engaging rib 3456 can be understood as the engaging rib 3456 made of rubber, plastic or other easily deformable materials, and can also be understood as the engaging rib 3456 made of metal material with low height.

The preset condition for the separation of the separation assembly 345 may also be that the flexible connector 343 is disconnected when the separation assembly 345 interacts with a component. In the embodiment shown with reference to fig. 4c, the first separation joint 3451 is actually composed of a first part and a second part, wherein the main mating area 3452 is provided by the first part and the second part is arranged over the first part. In this embodiment, the mating ring rib 3456 releases the second separation joint 3453 by deforming or moving itself, and the deformation or movement of the mating ring rib 3456 is restricted by the second member, and only when the second member is close to the first member, the groove inside the second member is aligned 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 the first and second disconnect joints 3451 and 3453 can be better connected to ensure that the disconnect assembly 345 does not separate before the release action is completed during use.

At the same time, the second component can also provide a trigger condition for the release action of the release assembly 345. This trigger condition enables better control of the state of the flexible linkage 343. Referring to an embodiment, the separating assembly 345 further includes a separating baffle 3457, a separating hole (not shown) is formed inside the separating baffle 3457, the flexible connecting member 343 is inserted into the separating hole, and the diameter of the separating hole is larger than the outer diameter of the second separating joint 3453 and smaller than the outer diameter of the first separating joint 3451.

The separation damper 3457 acts on the second member through the outer edge of the separation hole, thereby satisfying the trigger condition of the unlocking action of the separation assembly 345, and achieving the separation of the first separation joint 3451 and the second separation joint 3453. By precise force application with a matched size, the separation operation of the separation assembly 345 can be realized better, more accurately and more quickly. Meanwhile, when the separating assembly 345 separates, the flexible connecting member 343 may be subjected to a large stress, and the arrangement of the embodiment can release the stress concentration on the separating assembly 345, but not on other parts, thereby improving the stability of the separating action.

The effects of the fire extinguishing apparatus of the present application will be exemplarily shown below. For example, a fire extinguishing apparatus equipped with the gas cylinder 312 and the liquid storage container 311 becomes a gas-liquid two-phase fire extinguishing apparatus. The preset liquid storage container 311 is stored with 50 liters of water agent, wherein the water agent can be mixed with foaming agent, the air cylinder 312 is stored with compressed air with pressure of more than 25MPa, the operation can be carried out for about 2 minutes, the fire extinguishing effect can be equivalent to that of a 2000 liter common water gun, particularly, the water tank and the like are well cooled, the oil tank is effectively protected from explosion, and the water tank is well extinguished on the leaked gasoline and diesel fire after the foam is added. The passenger car with the fire can win precious escape time for most passengers due to timely fire extinguishing, and the fire can be extinguished in the initial three minutes under the common condition.

More importantly, when the rotary disc 332 is provided with the connecting hose 331 with the length of more than 30 meters, the spray gun 32 can realize the water mist range with the length of more than 10 meters under the pressure driving of the gas cylinder 312, and can meet the fire point of any part of the vehicle and rescue the fire point of other vehicles with the length of 40 meters nearby. On the basis, by improving the assembling quantity of the fire extinguishing devices in the application, the fire fighting truck which flows in a high-speed whole network is basically formed according to the vehicle density of the highway in China at present, and the truck always arrives at the site in a few minutes in case of fire, so that precious time is won for rescue.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims (10)

1. The gas-liquid two-phase flow water mist fire extinguisher is characterized by comprising a shell, wherein a storage tank for storing a fire extinguishing medium, a spray gun for spraying the fire extinguishing medium and a conveying assembly for connecting the storage tank and the spray gun are arranged on the shell;

the conveying assembly comprises a storage tank, a connecting hose of the spray gun and a rotary table, the connecting hose comprises a pipe body and a pipe joint, the pipe joint is connected with a corresponding component, and the pipe body comprises: the pipe joint comprises a sealing joint connected with the pipe joint, and a first conveying pipe and a second conveying pipe which are nested with each other.

2. The gas-liquid two-phase flow water mist fire extinguisher according to claim 1, wherein the first delivery pipe is located inside and hollow inside to form a first fluid passage;

the second delivery pipe is positioned at the outer side, and a radial gap between the first delivery pipe and the second delivery pipe forms a second fluid channel;

the sealing joint is provided with a first through hole communicated with the first fluid channel and a second through hole communicated with the second fluid channel, and the pipe joint is provided with a first outlet communicated with the first through hole and a second outlet communicated with the second through hole;

one of the first through hole and the second through hole is arranged along the axial direction of the pipe body, and the other one is arranged along the radial direction of the pipe body.

3. The gas-liquid two-phase flow water mist fire extinguisher of claim 2, wherein the sealing joint comprises:

the first fixing part is used for being connected with the first conveying pipe in a sealing mode and connected with the pipe joint in a sealing mode, and a first through hole is formed in the first fixing part;

the second fixing part is used for being connected with the second conveying pipe in a sealing mode and is connected with the pipe joint in a sealing mode;

the first fixing part is provided with a stepped hole for the first conveying pipe to penetrate through, the first fixing part further comprises a cock matched with the stepped hole, the cock is used for expanding the pipe diameter of the first conveying pipe so as to clamp the first conveying pipe and the stepped hole, and the cock is provided with a first through hole for communicating the first fluid channel and the first through hole; the first fixing part is further provided with the second through hole.

4. A gas-liquid two-phase flow water mist fire extinguisher according to claim 3, wherein the pipe joint comprises a connection region for receiving the sealing joint, the first outlet and the second outlet communicating into the connection region; the first fixing portion is arranged in the connecting area and is in sealing fit with the inner side wall of the connecting area, and the second fixing portion covers the pipe joint to close the connecting area.

5. The gas-liquid two-phase flow water mist fire extinguisher of claim 2, wherein the pipe joint comprises a connection region for receiving at least a portion of the sealing joint, the first outlet and the second outlet being coaxially disposed or radially disposed side-by-side or disposed in different orientations.

6. The gas-liquid two-phase flow water mist fire extinguisher of claim 1, wherein the rotary disc comprises a bracket for fixing, a containing disc rotatably mounted on the bracket, and a first locking mechanism arranged on the bracket for limiting the containing disc to rotate relative to the bracket; a second locking mechanism for controlling the storage tank to be opened or closed is arranged between the storage tank and the connecting hose;

the gas-liquid two-phase flow water mist fire extinguisher further comprises a trigger assembly linked with the first locking mechanism and/or the second locking mechanism, and the trigger assembly is arranged in the following mode:

the spray gun is detachably accommodated on the gun clamp, and the trigger assembly is arranged on the spray gun and triggers when the spray gun is far away from the gun clamp; and/or

The gas-liquid two-phase flow water mist fire extinguisher further comprises a shielding cover for sealing the shell, and the trigger assembly is arranged on the shielding cover and triggers when the shielding cover is far away from the shell.

7. The two-phase flow water mist fire extinguisher of claim 1, wherein the rotary table comprises a bracket for fixing, a rotary shaft mounted on the bracket and a containing disc mounted on the rotary shaft, the containing disc is close to the vicinity of the rotary shaft and is provided with a connection chamber, the hollow part of the rotary shaft extends to the outside of the containing disc and is connected with a storage tank, and the other end of the rotary shaft extends to the connection chamber and the pipe joint of the connecting hose.

8. The gas-liquid two-phase flow water mist fire extinguisher according to claim 7, wherein the rotating shaft is provided as follows:

the rotating shaft is hollow and is provided with two conveying pipelines which are respectively connected with the first conveying pipe and the second conveying pipe;

the pivot be equipped with two and wherein one with the stock solution container in the storage jar is connected, another with the gas cylinder in the storage jar is connected, and two pivots are located the one end of refuting the storehouse is passed through the hose and is passed through the coupling respectively with first conveyer pipe with second duct connections.

9. The two-phase gas-liquid water mist fire extinguisher according to claim 8, wherein 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 a liquid storage container, and 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.

10. The gas-liquid two-phase flow water mist fire extinguisher according to claim 1, wherein the gas-liquid two-phase flow water mist fire extinguisher is provided with a gas path and a liquid path, wherein the gas path comprises:

the first gas path is from the gas cylinder and the pressure reducing valve to the liquid storage container;

the second gas path is from the gas cylinder, the pressure reducing valve, the pipe joint, the sealing joint, the first conveying pipe, the sealing joint at the other end of the connecting hose, and the pipe joint at the other end of the connecting hose to the spray gun;

wherein the liquid way includes: the automatic liquid storage device comprises a liquid storage container, a pipe joint, a sealing joint, a second conveying pipe and a sealing joint, wherein the sealing joint is connected with the other end of a hose, and the pipe joint at the other end of the hose is connected to a spray gun;

the second gas path and the liquid path are combined in the spray gun to form gas-liquid two-phase flow water mist for fire extinguishing.

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