Gas-liquid two-phase flow water mist gun connecting hose and its assembling method

Abstract

The application discloses a gas-liquid two-phase flow water mist gun connecting hose and an assembling method thereof. The gas-liquid two-phase flow water mist gun connecting hose comprises a pipe body and a pipe joint connected with the pipe body. 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 first conveying pipe is located at the inner side and is internally hollow to form a first fluid channel. The second conveying pipe is located at the outer side and a radial gap between the first conveying pipe and the second conveying 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. 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 is arranged along the radial direction of the pipe body. The gas-liquid two-phase flow water mist gun connecting hose has the advantages of low manufacturing cost, convenient storage and transportation and high popularization value.

Description

Technical Field

[0001] This application relates to the field of fire protection equipment, and in particular to the connecting hose of a gas-liquid two-phase water mist gun and its assembly method. Background Technology

[0002] With increasingly stringent fire safety requirements, the high efficiency of water mist fire extinguishing technology, which utilizes gas-liquid two-phase flow, has attracted attention, making related equipment and products a key focus of technological research.

[0003] Two-phase water mist guns are widely used, including backpack water mist guns, cart-mounted water mist guns, and vehicle-mounted water mist guns. Cart-mounted and vehicle-mounted water mist guns, in particular, use longer hoses. Cart-mounted hoses are typically 10 meters long, while vehicle-mounted hoses can reach 25 meters, with some products even requiring custom lengths of 30 meters or longer. The hoses used in common two-phase water mist guns generally consist of two hoses, one for water and one for gas. These hoses are then connected to the gun, liquid storage container, and gas cylinder respectively via connectors, and the two hoses are held together side-by-side using clamps or cloth sleeves.

[0004] The inventors discovered that in the existing gas-liquid two-phase water mist gun connection hose, the two hoses are prone to twisting together when twisting, resulting in excessive space occupation; at the same time, adding clamps or cloth sleeves during the manufacturing of the connection hose is relatively troublesome and increases additional costs; the hose material is usually rubber products, and since two hoses are required, both the cost of the hoses and the total weight of the hoses are relatively high. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this application discloses a gas-liquid two-phase water mist gun connecting hose, including a tube body and a pipe connector connected to the tube body. The tube body includes: a sealing connector connected to the pipe connector, and a first delivery tube and a second delivery tube nested together.

[0006] The first delivery pipe is located on the inner side and is hollow inside to form a first fluid channel;

[0007] 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;

[0008] 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;

[0009] 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.

[0010] 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.

[0011] Optionally, the sealing joint includes:

[0012] 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;

[0013] The second fixing part is used to seal and connect the second delivery pipe and to seal and connect with the pipe joint.

[0014] 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.

[0015] Optionally, the first fixing part is further provided with a second through hole.

[0016] 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.

[0017] 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 penetrates the first fixing part axially in the pipe body.

[0018] Optionally, the sealing joint comprises, in sequence along the axial direction of the pipe body:

[0019] The second fixing part is used to seal and connect the second delivery pipe and to seal and connect with the pipe joint.

[0020] 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;

[0021] 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 conveying pipe. The first fixing part is provided with a first through hole and a second through hole.

[0022] 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.

[0023] 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.

[0024] Optionally, the axis of the first outlet coincides with or is close to the axis of the connecting area.

[0025] This application also discloses an assembly method for a connecting hose of a gas-liquid two-phase water mist gun, wherein the connecting hose of the gas-liquid two-phase water mist gun adopts any of the above-mentioned technical methods, and the assembly method includes:

[0026] 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;

[0027] 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.

[0028] The technical solution disclosed in this application optimizes the structure of the connecting hose for a gas-liquid two-phase water mist gun, and at least includes the following technical effects:

[0029] 1. Reduce costs;

[0030] (1) It is easy to make and does not require clamps or cloth covers, thus reducing the corresponding costs;

[0031] (2) The original design used two hoses, which were installed separately, resulting in higher costs due to limitations in various performance parameters.

[0032] 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.

[0033] 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 by at least 20% in terms of storage length.

[0034] 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

[0035] Figure 1a This is a schematic diagram of the connecting hose for a gas-liquid two-phase water mist gun in one embodiment;

[0036] Figure 1b for Figure 1a Enlarged schematic diagram of one end of the connecting hose of the gas-liquid two-phase water mist gun;

[0037] Figure 1c This is a schematic diagram of a pipe fitting in one embodiment;

[0038] Figure 1d This is a schematic diagram of a pipe fitting in another embodiment;

[0039] Figure 2a This is a schematic diagram of the water mist two-phase delivery pipe in one embodiment;

[0040] Figure 2b for Figure 2a Enlarged schematic diagram of one end of the tube;

[0041] Figure 2c for Figure 2a A schematic diagram of the sealing joint of the connecting hose for the gas-liquid two-phase water mist gun;

[0042] Figure 2d for Figure 2a A schematic diagram of the connection hose for gas-liquid two-phase flow.

[0043] The annotations in the figure are explained as follows:

[0044] 10. Pipe body;

[0045] 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;

[0046] 12. First delivery pipe; 121. First fluid channel;

[0047] 13. Second delivery pipe; 131. Second fluid channel;

[0048] 20. Pipe fitting; 201. First outlet; 202. Second outlet; 203. Connection area. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] refer to Figures 1a to 2c This application discloses a gas-liquid two-phase flow water mist gun connecting hose, including a tube body 10 and a pipe connector 20 connected to the tube body 10. The tube body 10 includes: a sealing connector 11 connected to the pipe connector 20, a first delivery pipe 12 nested with the pipe connector 20, and a second delivery pipe 13 nested with the pipe connector 20.

[0053] The first delivery pipe 12 is located on the inner side and is hollow inside to form a first fluid channel 121;

[0054] 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;

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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 2d As 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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:

[0080] 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.

[0081] 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.

[0082] 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, and 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.

[0083] 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.

[0084] 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 gun connecting hose and improving the delivery effect.

[0085] 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.

[0086] 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 radially outside the first fixing part 111 and passes through the first fixing part 111 axially in the pipe body 10.

[0087] 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.

[0088] 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:

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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 gun connection hose.

[0093] Regarding the sealing of both, 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] This application also discloses an assembly method for a connecting hose of a gas-liquid two-phase water mist gun, wherein the connecting hose of the gas-liquid two-phase water mist gun adopts any of the above-mentioned technical methods, and the assembly method includes:

[0099] 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;

[0100] 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.

[0101] 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.

[0102] This assembly method focuses on the assembly and disassembly of the connecting hose for the gas-liquid two-phase water mist gun 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, while 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.

[0103] 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.

[0104] 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 gun connecting hose, comprising a hose body and a connector connected to the hose body, characterized in that, The pipe body includes: a sealing joint connected to the pipe joint, and a first delivery pipe and a second delivery pipe 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 outside, and the radial gap between the first delivery pipe and the second delivery pipe forms a second fluid channel; 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 has a stepped hole for the first delivery pipe to pass through and 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 and seal the connection between the first delivery pipe and the first fixing part. The second fixing part is used to seal the connection between the second delivery pipe. The first fixing part has a first through hole communicating with the first fluid channel. The first through hole is arranged radially along the pipe body. The plug has a first through hole communicating with the first fluid channel and the first through hole. The first fixing part has a second through hole communicating with the second fluid channel. The second through hole is arranged axially along the pipe body. A second through hole communicating with the second through hole and the second fluid channel is provided between the first fixing part and the second fixing part. 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. The pipe joint includes a connection area for receiving the sealing joint. The first outlet and the second outlet communicate with the connection area. The first fixing part is disposed in the connection area and is sealed with the inner sidewall 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 gun connecting hose according to claim 1, characterized in that, The first conveying 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 penetrates the first fixing part axially in the pipe body.

3. The gas-liquid two-phase water mist gun connecting hose according to claim 1, characterized in that, The sealing joint comprises, in sequence along the axial direction of the pipe body: The second fixing part is used to seal and connect the second delivery pipe and to seal and connect with the pipe joint. 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; 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 conveying pipe. The first fixing part is provided with a first through hole and a second through hole.

4. The gas-liquid two-phase water mist gun connecting hose according to claim 3, characterized in that, A portion of the second fixing part extends into the connection area, and the circumferential surface of this portion has a second seal for sealing the connection area.

5. The gas-liquid two-phase water mist gun connecting hose 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.

6. A method for assembling the connecting hose of a gas-liquid two-phase water mist gun, characterized in that, The gas-liquid two-phase water mist gun connecting hose is as described in any one of claims 1 to 5, and the assembly method includes: 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; 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.

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