High-pressure fire-resistant composite hose assembly with high sealing performance

Abstract

The invention relates to the technical field of metal hoses, and discloses a high-sealing-performance high-pressure fire-resistant composite hose assembly which comprises a hose body, pipe connecting bases are welded to the two ends of the hose body, a first pipe connector and a second pipe connector are connected to the two pipe connecting bases respectively, and a sealing pipe connector is connected to the second pipe connector in a threaded mode; the adjacent hoses are connected through a first pipe joint and a second pipe joint; the sealing pipe joint is inserted into the first pipe joint; the sealing pipe joint is sleeved with a plurality of first sealing rings. When adjacent hose bodies are connected, the first pipe joint of one hose is connected with the second pipe joint of the other hose; a sealing pipe joint is arranged on the second pipe joint and inserted into the first pipe joint, so that the connecting length of the first pipe joint and the second pipe joint is increased, and the connecting stability is improved; and through the arrangement of a plurality of first sealing rings, the sealing pipe joint and the first pipe joint are sealed, and the sealing performance during hose connection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal hoses, and more specifically, to a high-sealing high-pressure fire-resistant composite hose assembly. Background Art

[0002] In the field of engineering technology, as a key connecting component, a metal hose generally includes structures such as a corrugated flexible pipe, a wire mesh sleeve, and a pipe joint. The application fields of metal hoses cover multiple industries such as aerospace, petrochemical, mining electronics, mechanical shipbuilding, medical and health, textile electronics, energy construction, etc.

[0003] Traditional hoses usually adopt a single-layer or multi-layer stainless steel braided structure. The hose is used in a harsh environment and is often applied to high-temperature and high-pressure environments or even fire environments. In a high-pressure environment, the hose body and the welded part with the joint are prone to deformation or even cracking; in a pulsed pressure working condition, the problem of metal fatigue will cause the service life of the hose to be greatly shortened; the fire-resistant coating on the hose body is prone to peeling off in a fire environment, and the fire-resistant aging time is short. And the hose has high requirements for sealing performance during use.

[0004] For existing hoses to improve sealing, pressure resistance and fire resistance performance, the structure of the hose body is usually improved. However, when the hose is in use, at the connection between adjacent hoses, the sealing, pressure resistance and fire resistance performance of the pipe joint are also important factors affecting the performance of the hose system.

[0005] Therefore, it is necessary to propose a high-sealing high-pressure fire-resistant composite hose assembly to at least partially solve the problems existing in the prior art. Summary of the Invention

[0006] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Detailed Implementation section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0007] To at least partially solve the above problems, the present invention provides a high-sealing high-pressure fire-resistant composite hose assembly, including:

[0008] A hose body, with pipe socket seats welded at both ends of the hose body. A first pipe joint and a second pipe joint are respectively connected to the two pipe socket seats. A sealing pipe joint is screwed onto the second pipe joint; adjacent hoses are connected through the first pipe joint and the second pipe joint, and the sealing pipe joint is inserted into the first pipe joint; a plurality of first sealing rings are sleeved on the sealing pipe joint.

[0009] Preferably, the hose body includes a flexible bushing, a corrugated pipe, a metal mesh sleeve, a high-pressure resistant braided layer, a fire-resistant braided layer, and a protective layer arranged in sequence from the inside to the outside. An integral circumferential weld is formed between the hose body and the connecting seat.

[0010] Preferably, a first flange is circumferentially arranged in the middle of the outer wall of the first pipe joint, and a plurality of first through holes are uniformly arranged along the circumferential direction of the first flange; a second flange is circumferentially arranged at the end of the second pipe joint, and a plurality of second through holes are uniformly arranged along the circumferential direction of the second flange. The first through holes and the second through holes are in corresponding positions and are connected by bolts; a second sealing ring is arranged between the first flange and the second flange.

[0011] Preferably, annular grooves for accommodating the first sealing ring are arranged on both the first pipe joint and the sealing pipe joint.

[0012] Preferably, the second pipe joint includes an inner ring body and an outer ring body. An annular groove is formed between the inner ring body and the outer ring body. The end of the first pipe joint is inserted into the annular groove. The second flange is connected to the end of the outer ring body. An installation groove is arranged at the end of the inner ring body, and internal threads are arranged on the side wall of the installation groove. External threads are arranged at the end of the sealing pipe joint, and the sealing pipe joint is screwed into the installation groove and abuts against the end of the inner ring body.

[0013] Preferably, a first transmission groove is arranged at the end of the first pipe joint. A first pressure sensing plate is slidably arranged in the first transmission groove. A rubber sealing ring is arranged on the outer wall of the first pressure sensing plate. An elastic pull rope is connected between the first pressure sensing plate and the bottom of the first transmission groove. An air inlet hole is arranged in the first transmission groove and is communicated with the inside of the first pipe joint.

[0014] Preferably, a plurality of rotating grooves are arranged along the circumferential direction of the first pressure sensing plate, and the rotating grooves are arranged close to the notch of the first transmission groove; hinge seats are arranged in the rotating grooves, hinge rods are rotatably connected to the hinge seats, and torsion springs are arranged at the hinge joints; a sector-shaped limiting plate is connected to the hinge rods.

[0015] Preferably, a second pressure sensing plate is arranged on the side of the first pressure sensing plate away from the notch of the first transmission groove. The second pressure sensing plate is concentric with the first pressure sensing plate and is spaced apart by a preset distance. The elastic pull rope passes through the second pressure sensing plate; a plurality of side grooves are arranged on the first pressure sensing plate, springs are arranged in the side grooves, and the ends of the springs are connected to the second pressure sensing plate; a plurality of limiting rods are circumferentially connected to the second pressure sensing plate, the limiting rods are slidably arranged in the first pressure sensing plate and extend into the rotating grooves, and limiting grooves corresponding to the limiting rods are arranged on the hinge rods.

[0016] Preferably, the second pipe joint includes: a second transmission groove, a safety protection groove, and an elastic separation ring. The second transmission groove is arranged between the inner ring body and the outer ring body, and the second transmission groove corresponds to the first transmission groove in a ring shape. Moreover, the notch size of the second transmission groove is larger than that of the first transmission groove. The safety protection groove is concentrically arranged outside the second transmission groove. The elastic separation ring is connected between the second transmission groove and the safety protection groove. A weak surface is arranged on the elastic separation ring, and a tip is arranged at the end of the fan-shaped limiting plate.

[0017] Preferably, the safety protection groove includes: a flame-retardant ring and a heat-shrinkable ring. The flame-retardant ring is made of an elastic protection material and is sleeved outside the elastic separation ring. The heat-shrinkable ring is made of a shape memory alloy material and is sleeved outside the flame-retardant ring.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] For the high-sealing high-pressure fire-resistant composite hose assembly provided by the present invention, pipe socket seats are welded to both ends of the hose body, and a first pipe joint and a second pipe joint are respectively arranged on the pipe socket seats at both ends. When adjacent hose bodies are connected, the first pipe joint of one hose is connected to the second pipe joint of the other hose. A sealing pipe joint is arranged on the second pipe joint, and the sealing pipe joint is inserted into the first pipe joint to extend the connection length between the first pipe joint and the second pipe joint and improve the connection stability. And through the arrangement of a plurality of first sealing rings, the sealing between the sealing pipe joint and the first pipe joint is achieved, and the sealing performance during hose connection is improved.

[0020] For the high-sealing high-pressure fire-resistant composite hose assembly of the present invention, other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0022] Figure 1 is a schematic structural diagram of the high-sealing high-pressure fire-resistant composite hose assembly of the present invention;

[0023] Figure 2 is a schematic cross-sectional structural diagram of the connection part of the hose assembly pipe joint in the present invention;

[0024] Figure 3 is a schematic cross-sectional structural diagram of the second pipe joint in the present invention;

[0025] Figure 4 For the present invention Figure 2 is a partial enlarged structural diagram of part A in the present invention;

[0026] Figure 5 It is a partial structural schematic diagram of the first transmission groove in the present invention (the fan-shaped limit plate is folded);

[0027] Figure 6 It is a partial structural schematic diagram of the first transmission groove in the present invention (the fan-shaped limit plate is folded);

[0028] Figure 7 It is a schematic diagram of the lateral structure of the first pressure sensing plate in the present invention.

[0029] In the figure: 1. Hose body; 2. Pipe connection seat; 3. First pipe joint; 4. Second pipe joint; 5. Sealing pipe joint; 6. First sealing ring; 11. First flange; 12. Second flange; 13. Second sealing ring; 14. Inner ring body; 15. Outer ring body; 16. Mounting groove; 17. First transmission groove; 21. First pressure sensing plate; 22. Rubber sealing ring; 23. Elastic pull rope; 24. Air inlet; 25. Rotating groove; 26. Articulated seat; 27. Articulated rod; 28. Fan-shaped limit plate; 29. ​​Second pressure sensing plate; 30. Second transmission groove; 31. Side groove; 32. Spring; 33. Limit rod; 34. Limit groove; 35. Safety protection groove; 36. Elastic separation ring; 37. Flame retardant ring; 38. Heat shrink ring. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0031] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0032] Embodiment 1:

[0033] like Figure 1 , Figure 2 As shown, the present invention provides a high-sealing high-pressure fire-resistant composite hose assembly, comprising:

[0034] A hose body 1, with connecting pipe seats 2 welded at both ends of the hose body 1, a first pipe joint 3 and a second pipe joint 4 are respectively connected to the two connecting pipe seats 2, and a sealing pipe joint 5 is threaded on the second pipe joint 4; adjacent hoses are connected through the first pipe joint 3 and the second pipe joint 4, and the sealing pipe joint 5 is inserted into the first pipe joint 3; a plurality of first sealing rings 6 are sleeved on the sealing pipe joint 5.

[0035] The working principle and beneficial effects of the above technical solution are:

[0036] The present invention provides a high-pressure fire-resistant composite hose assembly with high sealing performance. During use, pipe socket seats 2 are welded to both ends of the hose body 1, and a first pipe joint 3 and a second pipe joint 4 are respectively arranged on the pipe socket seats 2 at both ends. When adjacent hose bodies 1 are connected, the first pipe joint 3 of one hose is connected to the second pipe joint 4 of another hose; a sealing pipe joint 5 is arranged on the second pipe joint 4, and the sealing pipe joint 5 is inserted into the first pipe joint 3 to extend the connection length between the first pipe joint 3 and the second pipe joint 4 and improve the connection stability; and through the arrangement of a plurality of first sealing rings 6, the space between the sealing pipe joint 5 and the first pipe joint 3 is sealed, improving the sealing performance when the hoses are connected.

[0037] Embodiment 2:

[0038] Based on the above Embodiment 1, the hose body 1 includes a flexible liner, a corrugated pipe, a metal mesh sleeve, a high-pressure braided layer, a fire-resistant braided layer, and a protective layer arranged in sequence from the inside to the outside, and an integral circumferential weld is formed between the hose body 1 and the pipe socket seat 2.

[0039] The working principle and beneficial effects of the above technical solution are as follows:

[0040] The hose body 1 is arranged as a multi-layer structure. The pipe blank is processed into a corrugated pipe by hydroforming or mechanical rolling, and a flexible liner is assembled inside the corrugated pipe to form a flexible foundation, enabling the hose body 1 to bend; then a metal mesh sleeve is woven outside the corrugated pipe by a knitting machine to ensure the stiffness of the hose body 1; a high-pressure braided layer is woven outside the metal mesh sleeve, and the high-pressure braided layer is formed by at least three layers of steel wire spiral weaving. The steel wire is made of high-compressive steel wires such as 304 stainless steel to improve the compressive performance of the hose body 1; a fire-resistant braided layer is woven outside the high-pressure braided layer, and the fire-resistant braided layer is formed by at least three layers of glass fiber spiral weaving. The glass fiber has good fire-resistant and heat-insulating properties and can be used in high-temperature and flammable environments to block heat transfer; after weaving is completed, the protective layer is coated on the surface of the fire-resistant braided layer to wrap each layer inside the hose body 1, reducing the bump damage during the use of the hose; after each layer structure is assembled and woven, the hose body 1 is formed, and finally the hose body 1 is welded to the pipe socket seats 2 at both ends.

[0041] Embodiment 3:

[0042] As Figure 2 shown, based on the above Embodiment 1, a first flange 11 is circumferentially arranged in the middle of the outer wall of the first pipe joint 3, and a plurality of first through holes are uniformly arranged along the circumferential direction of the first flange 11; a second flange 12 is circumferentially arranged at the end of the second pipe joint 4, and a plurality of second through holes are uniformly arranged along the circumferential direction of the second flange 12. The positions of the first through holes and the second through holes correspond to each other and are connected by bolts; a second sealing ring 13 is arranged between the first flange 11 and the second flange 12.

[0043] The working principle and beneficial effects of the above technical solution are as follows:

[0044] The first flange 11 on the first pipe joint 3 and the second flange 12 on the second pipe joint 4 are connected by bolts. The flange connection method increases the area of the connection surface of the pipe joint, improves the connection stability, and further improves the high-pressure resistance performance of the hose assembly; the second sealing ring 13 between the first flange 11 and the second flange 12 helps to eliminate the flange assembly gap and seals the outer circles of the first pipe joint 3 and the second pipe joint 4 at the same time.

[0045] Example 4:

[0046] Based on the above Example 3, annular grooves for accommodating the first sealing ring 6 are provided on both the first pipe joint 3 and the sealed pipe joint 5.

[0047] The working principle and beneficial effects of the above technical solution are as follows:

[0048] The sealed pipe joint 5 is provided with an annular groove for fixing the first sealing ring 6; the corresponding annular groove is provided on the first pipe joint 3 for accommodating the first sealing ring 6 and ensuring the accurate axial position of the sealed pipe joint 5.

[0049] Example 5:

[0050] As Figure 2 、 Figure 3 shown, based on the above Example 1, the second pipe joint 4 includes: an inner ring body 14 and an outer ring body 15. An annular groove is formed between the inner ring body 14 and the outer ring body 15. The end of the first pipe joint 3 is inserted into the annular groove. The second flange 12 is connected to the end of the outer ring body 15. An installation groove 16 is provided at the end of the inner ring body 14, and internal threads are provided on the side wall of the installation groove 16. External threads are provided at the end of the sealed pipe joint 5, and the sealed pipe joint 5 is screwed into the installation groove 16 and abuts against the end of the inner ring body 14.

[0051] The working principle and beneficial effects of the above technical solution are as follows:

[0052] The second pipe joint 4 is provided with an inner and outer double-layer structure. The first pipe joint 3 is inserted into the middle annular groove, and the inner ring body 14 is inserted into the first pipe joint 3 to form an inner and outer double-insertion structure, which can effectively block the fluid and is not easily disengaged under high pressure, improving the sealing performance and pressure resistance performance of the hose assembly. The sealed pipe joint 5 is threadedly connected to the end of the inner ring body 14 and adopts a detachable connection method. By using sealed pipe joints 5 of different lengths, the requirements for the connection strength in different pressure environments can be met, effectively avoiding the situation of disengagement due to insufficient connection length under high pressure; in addition, after using for a period of time, the sealed pipe joint 5 can be disassembled and replaced, reducing the possibility of sealing failure of the first sealing ring 6 and facilitating the later maintenance of the pipeline.

[0053] Example 6:

[0054] As Figures 4 - 7 shown, on the basis of the above-mentioned Embodiment 5, a first transmission groove 17 is provided at the end of the first pipe joint 3. A first pressure sensing plate 21 is slidably arranged in the first transmission groove 17. A rubber sealing ring 22 is arranged on the outer wall of the first pressure sensing plate 21. An elastic pulling rope 23 is connected between the first pressure sensing plate 21 and the bottom of the first transmission groove 17. An air inlet hole 24 is arranged in the first transmission groove 17, and the air inlet hole 24 is communicated with the inside of the first pipe joint 3.

[0055] The working principle and beneficial effects of the above technical solution are as follows:

[0056] A first transmission groove 17 is arranged in the first pipe joint 3. The first transmission groove 17 is communicated with the inside of the hose through the air inlet hole 24 and has the same pressure. When the fluid pressure in the hose increases, the pressure in the first transmission groove 17 increases, and the first pressure sensing plate 21 is pushed to slide in the first transmission groove 17. The first pressure sensing plate 21 gradually approaches the notch of the first transmission groove 17. When the first pressure sensing plate 21 moves, the elastic pulling rope 23 is pulled to make it elongate. The rubber sealing ring 22 outside the first pressure sensing plate 21 contacts the inner wall of the first transmission groove 17, improving the sealing performance in the first transmission groove 17, preventing fluid leakage, and responding more accurately to the high-pressure environment. A limiting structure such as a limiting block is arranged at the notch of the first transmission groove 17 to ensure that the first pressure sensing plate 21 does not come out of the first transmission groove 17.

[0057] Embodiment 7:

[0058] Figures 4 - 7 As shown, on the basis of the above-mentioned Embodiment 6, a plurality of rotating grooves 25 are arranged on the first pressure sensing plate 21 along the circumferential direction, and the rotating grooves 25 are arranged close to the notch of the first transmission groove 17; a hinge seat 26 is arranged in the rotating grooves 25, a hinge rod 27 is rotatably connected to the hinge seat 26 and a torsion spring is arranged at the hinge; a sector-shaped limiting plate 28 is connected to the hinge rod 27.

[0059] The working principle and beneficial effects of the above technical solution are as follows:

[0060] When the first pressure sensing plate 21 moves in the first transmission groove 17, the sector-shaped limiting plate 28 is pressed against the inner wall of the first transmission groove 17, increasing the resistance during the movement of the first pressure sensing plate 21, making the pressure required to push the first pressure sensing plate 21 increase, playing a role in increasing resistance. At this time, the hinge rod 27 is in a retracted state. When the first pressure sensing plate 21 moves to the notch of the first transmission groove 17, the hinge rod 27 unfolds under the action of the torsion spring, the sector-shaped limiting plate 28 unfolds and abuts against the inside of the second pipe joint 4, locking the first pipe joint 3 and the second pipe joint 4, and preventing the first pipe joint 3 and the second pipe joint 4 from being separated and falling off under the action of high pressure.

[0061] Example 8:

[0062] Figures 4 - 6 As shown, on the basis of the above Example 7, a second pressure sensing plate 29 is provided on the side of the first pressure sensing plate 21 away from the notch of the first transmission groove 17. The second pressure sensing plate 29 is concentric with the first pressure sensing plate 21 and is spaced apart by a preset distance. The elastic drawstring 23 passes through the second pressure sensing plate 29. A plurality of side grooves 31 are provided on the first pressure sensing plate 21. Springs 32 are provided in the side grooves 31 and the ends of the springs 32 are connected to the second pressure sensing plate 29. A plurality of limiting rods 33 are connected to the second pressure sensing plate 29 along the circumferential direction. The limiting rods 33 are slidably disposed in the first pressure sensing plate 21 and extend into the rotating groove 25. Limiting grooves 34 corresponding to the limiting rods 33 are provided on the hinge rod 27.

[0063] The working principle and beneficial effects of the above technical solution are as follows:

[0064] The second pressure sensing plate 29 is movably provided on the first pressure sensing plate 21. When the first pressure sensing plate 21 moves to the notch of the first transmission groove 17, the sector-shaped limiting plate 28 unfolds. At the same time, under the action of pressure, the second pressure sensing plate 29 moves towards the first pressure sensing plate 21 and compresses the spring 32 to store energy. The second pressure sensing plate 29 drives the limiting rod 33 to slide in the first pressure sensing plate 21. At this time, the sector-shaped limiting plate 28 has been unfolded in place, and the limiting rod 33 is inserted into the limiting groove 34 on the hinge rod 27, so that the hinge rod 27 no longer rotates, locking the position of the sector-shaped limiting plate 28. When the first pipe joint 3 and the second pipe joint 4 are under high pressure, they are automatically locked and stabilized through the sector-shaped limiting plate 28, preventing a gap from occurring between the first pipe joint 3 and the second pipe joint 4, strengthening at the weak position of the pipe joint connection, and improving the compressive performance of the hose assembly.

[0065] When the pressure decreases, under the elastic force of the spring 32, the torsion spring and the elastic drawstring 23, all components return to their original positions.

[0066] Example 9:

[0067] As Figure 4 shown, on the basis of the above Example 8, the second pipe joint 4 includes: a second transmission groove 30, a safety protection groove 35 and an elastic separation ring 36. The second transmission groove 30 is provided between the inner ring body 14 and the outer ring body 15. The second transmission groove 30 corresponds to the first transmission groove 17 in a ring shape, and the notch size of the second transmission groove 30 is larger than the notch size of the first transmission groove 17. The safety protection groove 35 is concentrically provided outside the second transmission groove 30. The elastic separation ring 36 is connected between the second transmission groove 30 and the safety protection groove 35. A weak surface is provided on the elastic separation ring 36, and a tip is provided at the end of the sector-shaped limiting plate 28.

[0068] AsFigure 1 As shown in the figure, on the basis of the above-mentioned Embodiment 9, the safety protection groove 35 includes: a flame retardant ring 37 and a heat shrinkable ring 38. The flame retardant ring 37 is made of an elastic protection material and is sleeved outside the elastic partition ring 36; the heat shrinkable ring 38 is made of a shape memory alloy material and is sleeved outside the flame retardant ring 37.

[0069] The working principle and beneficial effects of the above technical solution are as follows:

[0070] When the hose assembly is in a high-pressure state, it is more likely to have connection detachment and breakage in a fire environment. A second transmission groove 30 is provided in the second pipe joint 4 to provide space for the expansion of the fan-shaped limiting plate 28; the notch size of the second transmission groove 30 is larger than that of the first transmission groove 17, so that after the fan-shaped limiting plate 28 expands, it can contact both the first transmission groove 17 and the second transmission groove 30 at the same time to achieve the limiting function. A safety protection groove 35 is provided outside the second transmission groove 30 and is separated by an elastic partition ring 36. The elastic partition ring 36 can block the inward contraction tendency of the flame retardant ring 37. When the fan-shaped limiting plate 28 expands, the tip of the fan-shaped limiting plate 28 contacts the elastic partition ring 36 and scratches a crack on its weak surface. At this time, if a fire environment is encountered, the heat shrinkable ring 38 will quickly tighten after heating up, pulling the flame retardant ring 37 to tighten. Under the combined action of the elastic force of the flame retardant ring 37 and the contraction force of the heat shrinkable ring 38, it passes through the weak surface of the elastic partition ring 36 and shrinks in the second transmission groove 30; on the one hand, the flame retardant ring 37 is pressed against the side surface of the fan-shaped limiting plate 28 to eliminate the installation gap of the fan-shaped limiting plate 28 and improve the limiting stability; on the one hand, the flame retardant ring 37 and the heat shrinkable ring 38 press the inner ring body 14 to prevent the inner ring body 14 and the first pipe joint 3 from deforming and separating too much under the action of high temperature; on the other hand, the flame retardant ring 37 is made of a flame retardant material and is filled in the second transmission groove 30 to improve the sealing and fire prevention performance of the connection, prevent the fire from spreading into the hose, and has higher safety.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0072] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the examples shown and described herein.

Claims

1. A high-sealing high-pressure fire-resistant composite hose assembly, characterized in that, Comprising: A hose body (1), with connection seats (2) welded to both ends of the hose body (1). A first pipe joint (3) and a second pipe joint (4) are respectively connected to the two connection seats (2). A sealing pipe joint (5) is screwed onto the second pipe joint (4). Adjacent hoses are connected through the first pipe joint (3) and the second pipe joint (4), and the sealing pipe joint (5) is inserted into the first pipe joint (3). A plurality of first sealing rings (6) are sleeved on the sealing pipe joint (5).

2. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 1, wherein The hose body (1) includes a flexible bushing, a corrugated pipe, a metal mesh sleeve, a high-pressure resistant braided layer, a fire-resistant braided layer, and a protective layer arranged in sequence from the inside to the outside. An integral annular weld is formed between the hose body (1) and the connection seat (2).

3. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 1, characterized in that, A first flange (11) is circumferentially arranged in the middle of the outer wall of the first pipe joint (3), and a plurality of first through holes are evenly arranged along the circumferential direction of the first flange (11). A second flange (12) is circumferentially arranged at the end of the second pipe joint (4), and a plurality of second through holes are evenly arranged along the circumferential direction of the second flange (12). The positions of the first through holes and the second through holes correspond to each other and are connected by bolts. A second sealing ring (13) is arranged between the first flange (11) and the second flange (12).

4. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 1, wherein Both the first pipe joint (3) and the sealing pipe joint (5) are provided with annular grooves for accommodating the first sealing ring (6).

5. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 3, wherein The second pipe joint (4) includes an inner ring body (14) and an outer ring body (15). An annular groove is formed between the inner ring body (14) and the outer ring body (15). The end of the first pipe joint (3) is inserted into the annular groove. The second flange (12) is connected to the end of the outer ring body (15). An installation groove (16) is arranged at the end of the inner ring body (14), and internal threads are arranged on the side wall of the installation groove (16). External threads are arranged at the end of the sealing pipe joint (5), and the sealing pipe joint (5) is screwed into the installation groove (16) and abuts against the end of the inner ring body (14).

6. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 5, characterized in that, A first transmission groove (17) is arranged at the end of the first pipe joint (3). A first pressure sensing plate (21) is slidably arranged in the first transmission groove (17). A rubber sealing ring (22) is arranged on the outer wall of the first pressure sensing plate (21). An elastic pull cord (23) is connected between the first pressure sensing plate (21) and the bottom of the first transmission groove (17). An air inlet hole (24) is arranged in the first transmission groove (17), and the air inlet hole (24) is communicated with the inside of the first pipe joint (3).

7. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 6, characterized in that, A plurality of rotating grooves (25) are arranged along the circumferential direction of the first pressure sensing plate (21), and the rotating grooves (25) are arranged close to the notch of the first transmission groove (17). A hinge seat (26) is arranged in the rotating groove (25). A hinge rod (27) is rotatably connected to the hinge seat (26), and a torsion spring is arranged at the hinge. A sector-shaped limiting plate (28) is connected to the hinge rod (27).

8. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 7, characterized in that, On one side of the first pressure sensing plate (21) away from the notch of the first transmission groove (17), a second pressure sensing plate (29) is provided. The second pressure sensing plate (29) is concentric with the first pressure sensing plate (21) and spaced apart by a preset distance. The elastic drawstring (23) passes through the second pressure sensing plate (29). A plurality of side grooves (31) are provided on the first pressure sensing plate (21). Springs (32) are provided in the side grooves (31) and the ends of the springs (32) are connected to the second pressure sensing plate (29). A plurality of limiting rods (33) are circumferentially connected to the second pressure sensing plate (29). The limiting rods (33) are slidably arranged in the first pressure sensing plate (21) and extend into the rotating groove (25). Limiting grooves (34) corresponding to the limiting rods (33) are provided on the articulated rod (27).

9. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 3, wherein The second pipe joint (4) includes: a second transmission groove (30), a safety protection groove (35) and an elastic separation ring (36). The second transmission groove (30) is arranged between the inner ring body (14) and the outer ring body (15). The second transmission groove (30) is ring-corresponding to the first transmission groove (17), and the notch size of the second transmission groove (30) is larger than the notch size of the first transmission groove (17). The safety protection groove (35) is concentrically arranged outside the second transmission groove (30). The elastic separation ring (36) is connected between the second transmission groove (30) and the safety protection groove (35). A weak surface is provided on the elastic separation ring (36). The end of the sector-shaped limiting plate (28) is provided with a tip.

10. The high-sealing high-pressure fire-resistant composite hose assembly according to claim 9, characterized in that, The safety protection groove (35) includes: a flame retardant ring (37) and a heat shrinkable ring (38). The flame retardant ring (37) is made of an elastic protection material. The flame retardant ring (37) is sleeved outside the elastic separation ring (36). The heat shrinkable ring (38) is made of a shape memory alloy material. The heat shrinkable ring (38) is sleeved outside the flame retardant ring (37).

Images