High-pressure fire-resistant armored metal hose assembly and preparation process thereof

Abstract

The invention relates to the technical field of metal hoses, and discloses a high-pressure fire-resistant armored metal hose assembly and a preparation process thereof.The high-pressure fire-resistant armored metal hose assembly comprises a hose body and anti-explosion connectors welded to the two ends of the hose body; the hose body comprises a flexible lining, a corrugated pipe, a metal net sleeve, a high-pressure-resistant woven layer, a fire-resistant woven layer and a protective layer which are sequentially arranged from inside to outside, and an integrated annular welding seam is formed in the connecting position of the hose body and the anti-explosion connector. The high-pressure braid layer and the fire-resistant braid layer are arranged in the hose body, a stable layered structure is formed through weaving of compression-resistant and fire-resistant materials, and the compression-resistant and fire-resistant performance of the hose body is improved; the explosion-proof joints are welded at the two ends of the hose body to form an integral annular welding seam, so that the connection strength is improved, and the joints of the explosion-proof joints and the hose body are prevented from fracture and failure in a high-temperature and high-pressure environment.

Description

Technical Field

[0001] The present invention relates to the technical field of metal hoses, and more particularly to a high-pressure fire-resistant armored metal hose assembly and a preparation process thereof. Background Art

[0002] Metal hoses are important connecting components in engineering technology, consisting of corrugated flexible tubes, mesh sleeves, and connectors. They serve as compensating elements, sealing components, connecting elements, and shock absorbers in various gas and liquid transmission pipeline systems, as well as length, temperature, position, and angle compensation systems. They are used in a variety of fields, including aerospace, petrochemicals, mining electronics, machinery and shipbuilding, healthcare, textile electronics, energy and construction.

[0003] Traditional armored hoses often utilize single- or multi-layer stainless steel braided structures, which provide a certain degree of flexibility. However, they suffer from insufficient high-pressure bearing capacity and poor fire resistance when used under extreme operating conditions. Under high pressure, armored metal hoses are prone to deformation and cracking in the hose body and at the welds between the hose and the fittings. Furthermore, metal fatigue can significantly reduce the hose's lifespan under pulsed pressure conditions. In a fire, the fire-resistant coating on existing hoses is prone to detachment, resulting in a short fire-resistant lifespan. Long-lasting fire-resistant coatings can lead to fire spread.

[0004] Therefore, it is necessary to propose a high-pressure fire-resistant armored metal hose assembly and a preparation process thereof to at least partially solve the problems existing in the prior art. Summary of the Invention

[0005] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, the present invention provides a high-pressure fire-resistant armored metal hose assembly, comprising:

[0007] The hose body and the explosion-proof joints welded to both ends of the hose body. The hose body includes a flexible sleeve, a bellows, 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 integrated annular weld is formed at the connection between the hose body and the explosion-proof joint.

[0008] Preferably, the high-voltage resistant braided layer is formed by spirally braiding at least three layers of steel wires.

[0009] Preferably, the fire-resistant braided layer is formed by spirally weaving at least three layers of glass fibers.

[0010] Preferably, a high-pressure fire-resistant armored metal hose assembly preparation process is applied to the high-pressure fire-resistant armored metal hose assembly, and the preparation process is:

[0011] forming a bellows by hydroforming and fitting a flexible bushing inside the bellows;

[0012] Weaving a metal mesh sleeve on the outside of the corrugated pipe by a weaving machine;

[0013] A high-pressure resistant braided layer and a fire-resistant braided layer are woven on the outside of the metal mesh sleeve;

[0014] The protective layer is wrapped on the surface of the fire-resistant braided layer to form a hose body;

[0015] The explosion-proof joints are welded to both ends of the hose body by a ring welding device.

[0016] Preferably, the annular welding device comprises:

[0017] The hose positioning unit is connected to both sides of the machine and includes a first positioning component and a second positioning component. The first positioning component is used to support the inside of the hose body, and the second positioning component is used to support the explosion-proof joint.

[0018] Annular welding unit: the annular welding unit is connected to the top of the machine, the hose body passes through the center of the annular welding unit, and the annular welding unit moves axially along the hose body. The annular welding unit is provided with a circumferentially movable welding gun, which welds the connection between the hose body and the explosion-proof joint.

[0019] Preferably, the first positioning component includes:

[0020] Horizontal telescopic frame, which is installed on both sides of the machine and can move horizontally;

[0021] The positioning seat is connected to the horizontal telescopic frame and is configured as a ring-shaped seat;

[0022] Positioning wire racks, at least three positioning wire racks are evenly connected to the outside of the positioning seat;

[0023] The wire roller is rotatably connected to a positioning wire frame on one side, and the wire roller shaft is connected to the first motor output end on one side of the positioning wire frame. Positioning wire is wound around the wire roller, and multiple strands of positioning wire are connected to the positioning seat on the other side.

[0024] Preferably, a guide frame is connected to the positioning wire frame, and the guide frame is connected to a guide wheel by rotating at the center of the horizontal axis; a plurality of guide holes are evenly arranged on the positioning seat; one end of the positioning wire passes around the guide wheel and passes through the guide hole, and after the positioning wire passes through the hose body, the other end passes through the guide hole on the positioning seat on the other side and is detachably connected to the limit block, and the outer diameter of the limit block is larger than the diameter of the guide hole.

[0025] Preferably, the second positioning component includes:

[0026] The fixing frame has one end connected to the edge of the positioning seat and the other end extending toward the center of the positioning seat and located outside the positioning seat.

[0027] The cylinder is connected to the outside of the fixing frame, and the cylinder rod is coaxially arranged with the positioning seat;

[0028] A joint positioning frame, which is connected to the cylinder rod and is arranged close to the positioning seat;

[0029] Guide rods, multiple guide rods are vertically connected to the joint positioning frame and pass through the fixing frame to be slidably connected thereto;

[0030] A positioning arm, one end of which is connected to the joint positioning frame, and the other end of which is in contact with the inner wall of the explosion-proof joint.

[0031] Preferably, the positioning arm comprises:

[0032] The rotary joint is arranged in the middle of the positioning arm, the rotary joint is rotatably connected to the edge of the positioning seat, and the positioning seat is provided with a rotary seat corresponding to the rotary joint;

[0033] The ball head is set at one end of the positioning arm. The joint positioning frame is evenly connected to multiple support arms in the circumferential direction, and a slide groove is set on the support arm. The ball head is slidably connected in the slide groove and will not fall out;

[0034] The clamping head is arranged at the other end of the positioning arm. The part where the positioning arm is connected to the clamping head is bent and a recessed area is formed at the connection. The clamping head abuts against the inner wall of the explosion-proof joint, and the edge of the explosion-proof joint is clamped in the recessed area.

[0035] Preferably, the annular welding unit includes: a transverse movement mechanism, a welding ring, an electric flip frame and an auxiliary clamp. The transverse movement mechanism is connected to the top of the machine and is used to drive the welding ring to move in the horizontal direction; an annular electric slide is provided in the welding ring, and the electric slide drives the welding gun to move to adjust the welding angle and position; the electric flip frame is connected to one side of the outer wall of the welding ring, and the electric flip frame can be flipped left and right under the drive of the second motor; the auxiliary clamp is connected to the electric flip frame, and two electric clamps are symmetrically provided on the auxiliary clamp for clamping and releasing the hose body.

[0036] Preferably, a plurality of multifunctional supports are arranged along the circumferential direction of the positioning seat, and mounting parts are arranged on both sides of the multifunctional supports. The mounting part on one side is connected to the horizontal telescopic frame, and the mounting part on the other side is connected to the camera. The camera is used to collect the weld image at the welding point between the hose body and the explosion-proof joint. The controller receives the weld image and analyzes the weld quality, and controls the annular welding unit to perform repair welding at the missing weld.

[0037] Compared with the prior art, the present invention has at least the following beneficial effects:

[0038] The present invention provides a high-pressure, fire-resistant armored metal hose assembly, in which a high-pressure braided layer and a fire-resistant braided layer are arranged in the hose body. A stable layered structure is formed by weaving pressure-resistant and fire-resistant materials, thereby improving the pressure resistance and fire resistance of the hose body, and the fire-resistant braided layer is not easy to fall off; explosion-proof joints are welded at both ends of the hose body to form an integral annular weld, thereby improving the connection strength and preventing the explosion-proof joint and the hose body from breaking and failing at the connection under high temperature and high pressure environment.

[0039] The present invention provides a process for preparing a high-pressure fire-resistant armored metal hose assembly, which has the beneficial effects of the above-mentioned high-pressure fire-resistant armored metal hose assembly.

[0040] The high-pressure fire-resistant armored metal hose assembly and its preparation process described in the present invention, as well as other advantages, objectives and features of the present invention will be reflected in part through the following description, and will also be understood by technicians in this field through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0042] Figure 1 This is a schematic cross-sectional view of a high-pressure fire-resistant armored metal hose assembly according to the present invention;

[0043] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the hose body in the present invention;

[0044] Figure 3 Schematic diagram of the structure of the annular welding device in the present invention;

[0045] Figure 4 Schematic diagram of the structure of the welding ring in the present invention;

[0046] Figure 5 Schematic diagram of the structure of the hose positioning unit in the present invention;

[0047] Figure 6 Schematic diagram of the structure of the fixing frame in the present invention;

[0048] Figure 7 It is a structural schematic diagram of the positioning seat in the present invention;

[0049] Figure 8 Schematic diagram of the structure of the positioning arm in the present invention;

[0050] Figure 9This is a schematic diagram of the first structure of the electric turning frame of the present invention (only one side of the electric clamp is shown);

[0051] Figure 10 It is a structural schematic diagram of the auxiliary splint in the present invention.

[0052] In the figure: 1. Hose body; 2. Explosion-proof connector; 3. Flexible bushing; 4. Bellows; 5. Metal mesh; 6. High-pressure resistant braided layer; 7. Fire-resistant braided layer; 8. Protective layer; 10. Machine; 11. First positioning assembly; 12. Second positioning assembly; 13. Welding gun; 14. Horizontal telescopic frame; 15. Positioning seat; 16. Positioning wire frame; 17. Wire roller; 18. First motor; 19. Positioning wire; 21. Guide frame; 22. Guide wheel; 23. Guide Guide hole; 24. Limit block; 25. Fixing frame; 26. Cylinder; 27. Joint positioning frame; 28. Guide rod; 29. Positioning arm; 31. Rotary joint; 32. Ball head; 33. Clamping head; 34. Rotating seat; 35. Support arm; 36. Slide groove; 37. Recessed area; 41. Transverse movement mechanism; 42. Welding ring; 43. Electric flip frame; 44. Auxiliary splint; 45. Multi-function support; 46. Camera; 47. Electric gripper; 48. Second motor. DETAILED DESCRIPTION

[0053] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0054] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0055] Example 1:

[0056] like Figure 1 、 Figure 2 As shown, the present invention provides a high-pressure fire-resistant armored metal hose assembly, characterized in that it includes:

[0057] The hose body 1 and the explosion-proof joint 2 welded to both ends of the hose body 1, the hose body 1 includes a flexible sleeve 3, a bellows 4, a metal mesh sleeve 5, a high-pressure resistant braided layer 6, a fire-resistant braided layer 7 and a protective layer 8 arranged in sequence from the inside to the outside, and an integrated annular weld is formed at the connection between the hose body 1 and the explosion-proof joint 2.

[0058] The working principle and beneficial effects of the above technical solution are:

[0059] The present invention provides a high-pressure fire-resistant armored metal hose assembly. The hose body 1 is set as a multi-layer structure. The tube blank is processed into a bellows 4 by hydraulic forming or mechanical rolling, and a flexible liner 3 is assembled in the bellows 4 to form a flexible foundation, so that the hose body 1 can bend; then a metal sheath 5 is woven on the outside of the bellows 4 by a braiding machine to ensure the rigidity of the hose body 1; a high-pressure braided layer 6 is woven on the outside of the metal mesh sheath 5. The high-pressure braided layer 6 is formed by spirally braiding at least three layers of steel wire. The steel wire is made of high-pressure steel wire such as 304 stainless steel to improve the pressure resistance of the hose body 1. ; A fire-resistant braided layer 7 is woven outside the high-pressure braided layer 6. The fire-resistant braided layer 7 is formed by spirally weaving at least three layers of glass fiber. The glass fiber has good fire resistance and heat insulation properties and can be used in high-temperature flammable environments to block heat transfer; after weaving is completed, the protective layer 8 is covered on the surface of the fire-resistant braided layer 7 to wrap the internal layers of the hose body 1 to reduce the damage caused by bumps during use of the hose; the various layers of structure are assembled and woven to form the hose body 1, and finally the hose body 1 is welded to the explosion-proof joints 2 at both ends; circumferential welding is adopted during welding to form an integral annular weld at the connection.

[0060] Through the above-mentioned structural design, a high-pressure braided layer 6 and a fire-resistant braided layer 7 are arranged in the hose body 1. A stable layered structure is formed by weaving pressure-resistant and fire-resistant materials, thereby improving the pressure-resistant and fire-resistant properties of the hose body 1, and the fire-resistant braided layer 7 is not easy to fall off; explosion-proof joints 2 are welded at both ends of the hose body 1 to form an integral annular weld, thereby improving the connection strength and preventing the explosion-proof joint 2 from breaking and failing at the connection between the hose body 1 under high temperature and high pressure environments.

[0061] Example 2:

[0062] like Figure 1 、 Figure 2 As shown, based on the above embodiment 1, a high-pressure fire-resistant armored metal hose assembly preparation process is applied to the high-pressure fire-resistant armored metal hose assembly described in the claims, and the preparation process is:

[0063] A bellows 4 is formed by hydroforming, and a flexible bushing 3 is assembled in the bellows 4;

[0064] Weaving a metal mesh sleeve 5 on the outside of the corrugated tube 4 by a weaving machine;

[0065] A high-pressure resistant braided layer 6 and a fire-resistant braided layer 7 are woven on the outside of the metal mesh sleeve 5;

[0066] The protective layer 8 is covered on the surface of the fire-resistant braided layer 7 to form the hose body 1;

[0067] The explosion-proof joints 2 are welded to both ends of the hose body 1 by a ring welding device.

[0068] The working principle and beneficial effects of the above technical solution are:

[0069] The above-mentioned preparation process is adopted when preparing the metal hose assembly. A high-pressure braided layer 6 and a fire-resistant braided layer 7 are arranged in the hose body 1. A stable layered structure is formed by weaving pressure-resistant and fire-resistant materials to improve the pressure resistance and fire resistance of the hose body 1; explosion-proof joints 2 are welded at both ends of the hose body 1 to form an integral annular weld, thereby improving the connection strength and preventing the explosion-proof joint 2 from breaking and failing at the connection between the hose body 1 in a high temperature and high pressure environment.

[0070] Example 3:

[0071] like Figure 3-Figure 5 As shown, based on the above embodiment 2, the annular welding device includes:

[0072] The hose positioning unit is connected to both sides of the machine 10 and includes a first positioning component 11 and a second positioning component 12. The first positioning component 11 is used to support the inside of the hose body 1, and the second positioning component 12 is used to support the explosion-proof joint 2;

[0073] The annular welding unit is connected to the top of the machine 10. The hose body 1 passes through the center of the annular welding unit, and the annular welding unit moves axially along the hose body 1. The annular welding unit is provided with a circumferentially movable welding gun 13, which welds the connection between the hose body 1 and the explosion-proof joint 2.

[0074] The working principle and beneficial effects of the above technical solution are:

[0075] When the annular welding device is used, the hose positioning unit is set on both sides of the machine 10. Two positioning components 11 are set on the hose positioning unit to support and position the hose body 1 and the explosion-proof joint 2 respectively, so that the explosion-proof joint 2 contacts and remains stable at both ends of the hose body 1, and the relative positions of the two are accurate; then the annular welding unit is started to move axially along the hose body 1, and the annular welding unit is moved to one end of the hose body 1, and the welding gun 13 is aligned with the welding position; the connection between the hose body 1 and the explosion-proof joint 2 is welded by the welding gun 13, and the welding gun 13 is driven to move in a circular direction at the same time, and the welding gun 13 forms an integrated annular weld at the connection. After the welding of the explosion-proof joint 2 on one side is completed, the annular welding unit is started again to move in the opposite direction so that it corresponds to the welding position at the other end of the hose body 1, and the hose body 1 and the explosion-proof joint 2 on the other side are welded.

[0076] Through the above structural design, the welding of the two explosion-proof joints 2 can be achieved by positioning in one time, which improves the consistency of welding and the welding efficiency. The direction of the annular link is adopted, the weld is formed in one time and there is no breakpoint in the middle of the annular weld, which effectively ensures the welding strength of the hose body 1 and the explosion-proof joint 2, can bear higher pressure, and has better sealing.

[0077] Example 4:

[0078] like Figure 5 As shown, based on the above embodiment 3, the first positioning component 11 includes:

[0079] Horizontal telescopic frames 14 are provided on both sides of the machine 10 and can move horizontally;

[0080] The positioning seat 15 is connected to the horizontal telescopic frame 14 and is configured as a ring-shaped seat;

[0081] Positioning wire racks 16, at least three positioning wire racks 16 are evenly connected to the outside of the positioning seat 15;

[0082] The wire roller 17 is rotatably connected to the positioning wire rack 16 on one side, and the rotating shaft of the wire roller 17 is connected to the output end of the first motor 18 on one side of the positioning wire rack 16. A positioning wire 19 is wound around the wire roller 17, and multiple strands of positioning wire 19 are connected to the positioning seat 15 on the other side.

[0083] The working principle and beneficial effects of the above technical solution are:

[0084] When the first positioning assembly 11 is in use, the multiple strands of positioning wire 19 are passed through the explosion-proof joint 2, the hose body 1 and the other explosion-proof joint 2 in sequence. When the wire is passed through, it can be connected to the threading rod for guidance; then the positioning wire 19 is connected to the positioning seat 15 on the other side; the two explosion-proof joints 2 and the hose body 1 are hung on the positioning wire 19 at the same time; then the horizontal telescopic frame 14 is moved, and the horizontal telescopic frame 14 is driven by hydraulic or pneumatic pressure to make the length of the positioning wire 19 between the positioning assemblies 11 on both sides adapt to the length of the metal hose assembly; after the horizontal telescopic frame 14 is adjusted, the first motor 18 is started to drive the wire roller 17 to rotate, and the positioning wire 19 is wound around On the wire roller 17, the positioning wire 19 is then tightened. The positioning wire 19 has sufficient rigidity to support the hose body 1 and the explosion-proof joint 2, and the deformation is controlled within a preset range; after the multiple strands of positioning wire 19 are tightened, they are just supported on the inner walls of the hose body 1 and the explosion-proof joint 2, and the inner wall diameters of the two are equal, and then the hose body 1 and the explosion-proof joint 2 are synchronously positioned by the positioning wire 19; one end of the explosion-proof joint 2 is connected to the second positioning component 12, and during the tightening process of the positioning wire 19, the hose body 1 is synchronously straightened, and its two ends enter the explosion-proof joint 2 and maintain stable contact; then the connection can be welded through the annular welding unit.

[0085] Through the above structural design, a horizontally movable first positioning component 11 is adopted, which can be flexibly moved away or closer during the positioning process of the metal hose assembly to adapt to different hose lengths; a positioning wire 19 is adopted as a support member of the metal hose assembly, which can provide support from the inside of the metal hose assembly, and straighten the flexible hose body 1 while tightening the positioning wire 19, so that its two ends can be quickly connected to the explosion-proof connector 2; and the entire hose body 1 is in a straightened state and will not partially fall under the action of gravity, thereby reducing the risk of displacement of the hose body 1 during welding, reducing the stress at the weld, and avoiding cracks. The positioning wire 19 is used to reduce space occupation, and compared with the external clamping positioning method of the metal hose, it reduces the risk of surface wear.

[0086] Example 5:

[0087] like Figure 5 、 Figure 7 As shown, on the basis of the above-mentioned embodiment 1, a guide frame 21 is connected to the positioning wire frame 16, and the guide frame 21 is rotatably connected to a guide wheel 22 at the center of the horizontal axis; a plurality of guide holes 23 are evenly arranged on the positioning seat 15; one end of the positioning wire 19 passes around the guide wheel 22 and passes through the guide hole 23, and after the positioning wire 19 passes through the hose body 1, the other end passes through the guide hole 23 on the positioning seat 15 on the other side, and is detachably connected to the limit block 24, and the outer diameter of the limit block 24 is larger than the diameter of the guide hole 23.

[0088] The working principle and beneficial effects of the above technical solution are:

[0089] One end of the positioning wire 19 is wound around the wire roller 17. After being drawn out from the wire roller 17, it loops around the guide wheel 22 on the guide frame 21 and then, guided by the guide hole 23, passes horizontally through the positioning seat 15. The distance between the guide hole 23 and the center of the positioning seat 15 is adapted to the inner diameter of the metal hose. By providing multiple groups of guide holes 23 on the positioning seat 15, each group of guide holes 23 is at a different distance from the center of the positioning seat 15, it can accommodate metal hoses of different diameters. At the same time, each group of guide holes 23 corresponds to a different angle of the guide frame 21. The guide frame 21 can be configured to rotate so that the guide wheel 22 on the guide frame 21 is aligned with the guide hole 23, allowing the positioning wire 19 to pass horizontally through the guide hole 23, thereby reducing wear caused by the positioning wire 19 contacting the positioning seat 15.

[0090] Example 6:

[0091] like Figure 5 、 Figure 6 As shown, based on the above embodiment 1, the second positioning component 12 includes:

[0092] The fixing frame 25 has one end connected to the edge of the positioning seat 15 and the other end extending toward the center of the positioning seat 15 and located outside the positioning seat 15.

[0093] Cylinder 26, cylinder 26 is connected to the outside of the fixing frame 25, and the rod of cylinder 26 is coaxially arranged with the positioning seat 15;

[0094] The joint positioning frame 27 is connected to the rod of the cylinder 26 and is arranged near the positioning seat 15;

[0095] Guide rods 28, multiple guide rods 28 are vertically connected to the joint positioning frame 27 and pass through the fixing frame 25 to be slidably connected thereto;

[0096] The positioning arm 29 has one end connected to the joint positioning frame 27 and the other end abutting against the inner wall of the explosion-proof joint 2 .

[0097] The working principle and beneficial effects of the above technical solution are:

[0098] In the initial position, the end of positioning arm 29 is located inside explosion-proof joint 2 and does not make contact. When second positioning assembly 12 is in use, explosion-proof joint 2 moves along positioning wire 19 and approaches positioning seat 15. Positioning arm 29 blocks explosion-proof joint 2, and the end of positioning arm 29 is located inside explosion-proof joint 2. Cylinder 26 is then activated, causing its rod to push joint positioning bracket 27 toward positioning seat 15. Joint positioning bracket 27 pushes one end of positioning arm 29 toward the center of positioning seat 15 and the other end away from the center of positioning seat 15 until the end of positioning arm 29 makes contact with explosion-proof joint 2, securing the explosion-proof joint 2.

[0099] Example 7:

[0100] like Figure 7 、 Figure 8 As shown, based on the above embodiment 6, the positioning arm 29 includes:

[0101] The rotary joint 31 is provided in the middle of the positioning arm 29. The rotary joint 31 is rotatably connected to the edge of the positioning seat 15. The positioning seat 15 is provided with a rotary seat 34 corresponding to the rotary joint 31.

[0102] The ball head 32 is provided at one end of the positioning arm 29. The joint positioning frame 27 is evenly connected to a plurality of support arms 35 in the circumferential direction. The support arms 35 are provided with a slide groove 36. The ball head 32 is slidably connected to the slide groove 36 and will not fall out.

[0103] The clamping head 33 is arranged at the other end of the positioning arm 29. The part where the positioning arm 29 is connected to the clamping head 33 is bent and a recessed area 37 is formed at the connection. The clamping head 33 abuts against the inner wall of the explosion-proof joint 2, and the edge of the explosion-proof joint 2 is clamped in the recessed area 37.

[0104] The working principle and beneficial effects of the above technical solution are:

[0105] When the positioning arm 29 is in use, the joint positioning frame 27 moves to push the ball head 32 toward the positioning seat 15. At the same time, the ball 32 slides along the slide groove 36 toward the center of the joint positioning frame 27, adapting to the rotation of the positioning arm 29 and maintaining stability. When the positioning arm 29 rotates, the rotary joint 31 rotates within the rotary seat 34, and the clamping head 33 at the other end of the positioning arm 29 rotates away from the center of the positioning seat 15, so that the clamping head 33 abuts against the inner wall of the explosion-proof joint 2, positioning the explosion-proof joint 2 in the circumferential direction. As the positioning arm 29 rotates, it pushes the explosion-proof joint 2 to move, causing the edge of the explosion-proof joint 2 to slide along the curved end of the positioning arm 29 until it moves into the retaining area 37, positioning the explosion-proof joint 2 in the axial direction. Through the above structural design, the structure of the positioning arm 29 is improved. The cooperation of multiple slide grooves 36 and the ball 32 enables it to rotate stably under the drive of the joint positioning frame 27. The design of the clamping head 33 and the retaining area 37 can achieve synchronous positioning of the explosion-proof joint 2 in the circumferential and axial directions.

[0106] Example 8:

[0107] like Figure 3 、 Figure 9 、 Figure 10 As shown, on the basis of the above-mentioned embodiment 3, the annular welding unit includes: a transverse movement mechanism 41, a welding ring 42, an electric flip frame 43 and an auxiliary clamping plate 44. The transverse movement mechanism 41 is connected to the top of the machine 10, and is used to drive the welding ring 42 to move in the horizontal direction; an annular electric slide is provided in the welding ring 42, and the electric slide drives the welding gun 13 to move, and is used to adjust the welding angle and position; the electric flip frame 43 is connected to one side of the outer wall of the welding ring 42, and the electric flip frame 43 can be flipped left and right under the drive of the second motor 48; the auxiliary clamping plate 44 is connected to the electric flip frame 43, and two electric clamping claws 47 are symmetrically provided on the auxiliary clamping plate 44, which are used to clamp and release the hose body 1.

[0108] The working principle and beneficial effects of the above technical solution are:

[0109] When the circular welding unit is in use, the transverse movement mechanism 41 is activated to drive the welding ring 42 horizontally to the welding position. The circular electric slide rail within the welding ring 42 is activated to move the slider on it, which in turn drives the welding gun 13 to move in a circular motion during welding. A multi-degree-of-freedom robotic arm is mounted on the slider to adjust the position and angle of the welding gun 13 to align with the welding position. An electric tilting frame 43 is mounted on the outer wall of the welding ring 42 and can rotate left or right under the drive of a second motor 48. When welding the explosion-proof joint 2 on one side, the second motor 48 rotates the electric flip frame 43 to the side away from the welding position, and the electric flip frame 43 drives the auxiliary clamp 44 to approach the hose body 1; then the electric clamp 47 on this side is started to move closer to clamp the hose body 1; when it is necessary to weld the explosion-proof joint 2 on the other side, the electric clamp 47 is released, and the second motor 48 is started to move the electric clamp 47 away from the hose body 1, and the welding ring 42 is moved; when the welding ring 42 moves to the welding position on the other side, the second motor 48 is started to flip the electric clamp 47 to the other side, and the electric clamp 47 on the other side is started to move closer to clamp the hose body 1.

[0110] Through the above structural design, in addition to fixing the two ends of the metal hose assembly, the hose body 1 near the welding position is also fixed at the same time; that is, the accessories in the welding area of the hose body 1 are locally strengthened and fixed, thereby further improving the stability of the hose body 1, solving the problem of local deformation of the hose body 1 when the length is large, improving the positioning effect of the hose body 1, and ensuring the welding effect.

[0111] Example 9:

[0112] like Figure 3 、 Figure 7 As shown, on the basis of the above-mentioned embodiment 4, a plurality of multifunctional supports 45 are provided along the circumferential direction of the positioning seat 15, and mounting portions are provided on both sides of the multifunctional support 45. The mounting portion on one side is connected to the horizontal telescopic frame 14, and the mounting portion on the other side is connected to the camera 46. The camera 46 is used to collect the weld image at the welding point between the hose body 1 and the explosion-proof joint 2. The controller receives the weld image and analyzes the weld quality, and controls the annular welding unit to perform repair welding at the missing weld.

[0113] The working principle and beneficial effects of the above technical solution are:

[0114] The positioning seat 15 is connected to the horizontal telescopic frame 14 through the multifunctional support 45. The multi-point connection ensures the installation stability of the positioning seat 15. A camera 46 is set on the multifunctional support 45. The camera 46 collects the weld image of the hose body 1 and the explosion-proof joint 2. The controller receives the weld image and analyzes it to locate the position where the weld is missing or the thickness is insufficient. This position is a weak point in the weld and is prone to breakage under high pressure. The controller controls the action of the annular welding unit to move the welding gun 13 to this position for repair welding. Through the above-mentioned structural design, the camera 46 is integrated into the welding device, and the weld can be inspected in situ after welding. Even if a weld defect is identified and repair welding is performed, the in-situ detection method does not require repeated positioning, reduces the transfer links of each workstation, and effectively improves the production efficiency of the metal hose assembly.

[0115] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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 understood as limiting the present invention.

[0116] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0117] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A high-pressure fire-resistant armored metal hose assembly, characterized in that: include: A hose body (1) and explosion-proof joints (2) welded to both ends of the hose body (1); the hose body (1) comprises a flexible bushing (3), a bellows (4), a metal mesh sleeve (5), a high-pressure resistant braided layer (6), a fire-resistant braided layer (7) and a protective layer (8) arranged in sequence from the inside to the outside; an integral annular weld is formed at the connection between the hose body (1) and the explosion-proof joint (2).

2. A high-pressure fire-resistant armored metal hose assembly according to claim 1, characterized in that: The high-pressure resistant braided layer (6) is formed by spirally braiding at least three layers of steel wires.

3. The high-pressure fire-resistant armored metal hose assembly according to claim 1, characterized in that: The fire-resistant braided layer (7) is formed by spirally braiding at least three layers of glass fibers.

4. A process for preparing a high-pressure fire-resistant armored metal hose assembly, characterized in that: A high-pressure fire-resistant armored metal hose assembly used in any one of claims 1-3 is characterized in that the preparation process is: forming a bellows (4) by hydraulic forming, and assembling a flexible bushing (3) in the bellows (4); Weaving a metal mesh sleeve (5) on the outside of the corrugated tube (4) using a weaving machine; A high-pressure-resistant braided layer (6) and a fire-resistant braided layer (7) are braided on the outside of the metal mesh sleeve (5); The protective layer (8) is covered on the surface of the fire-resistant braided layer (7) to form a hose body (1); The explosion-proof joints (2) are welded to both ends of the hose body (1) by means of a ring welding device.

5. The process for preparing a high-pressure fire-resistant armored metal hose assembly according to claim 4, characterized in that: The annular welding device includes: A hose positioning unit is connected to both sides of the machine (10), and comprises a first positioning component (11) and a second positioning component (12), wherein the first positioning component (11) is used to support the interior of the hose body (1), and the second positioning component (12) is used to support the explosion-proof joint (2); The annular welding unit is connected to the top of the machine (10), the hose body (1) passes through the center of the annular welding unit, and the annular welding unit moves axially along the hose body (1). A welding gun (13) that can move in an annular direction is provided on the annular welding unit, and the welding gun (13) welds the connection between the hose body (1) and the explosion-proof joint (2).

6. The process for preparing a high-pressure fire-resistant armored metal hose assembly according to claim 5, characterized in that: The first positioning component (11) comprises: A horizontal telescopic frame (14), which is arranged on both sides of the machine (10) and can move in the horizontal direction; A positioning seat (15), the positioning seat (15) is connected to the horizontal telescopic frame (14) and is configured as a ring-shaped seat; Positioning wire racks (16), at least three positioning wire racks (16) are evenly connected to the outside of the positioning seat (15); The wire roller (17) is rotatably connected to a positioning wire frame (16) on one side, and a rotating shaft of the wire roller (17) is connected to an output end of a first motor (18) on one side of the positioning wire frame (16). A positioning wire (19) is wound around the wire roller (17), and multiple strands of the positioning wire (19) are connected to a positioning seat (15) on the other side.

7. The process for preparing a high-pressure fire-resistant armored metal hose assembly according to claim 6, characterized in that: A guide frame (21) is connected to the positioning wire frame (16), and the guide frame (21) is rotatably connected to a guide wheel (22) at the center of the horizontal axis; a plurality of guide holes (23) are evenly arranged on the positioning seat (15); one end of the positioning wire (19) passes around the guide wheel (22) and passes through the guide hole (23); after the positioning wire (19) passes through the hose body (1), the other end passes through the guide hole (23) on the other side positioning seat (15) and is detachably connected to a limit block (24), and the outer diameter of the limit block (24) is larger than the diameter of the guide hole (23).

8. The process for preparing a high-pressure fire-resistant armored metal hose assembly according to claim 7, characterized in that: The second positioning assembly (12) includes: A fixing frame (25), one end of which is connected to the edge of the positioning seat (15), and the other end of which extends toward the center of the positioning seat (15) and is located outside the positioning seat (15). The cylinder (26) is connected to the outside of the fixing frame (25), and the rod of the cylinder (26) is coaxially arranged with the positioning seat (15); A joint positioning frame (27), the joint positioning frame (27) is connected to the rod of the cylinder (26) and is arranged close to the positioning seat (15); Guide rods (28), a plurality of guide rods (28) are vertically connected to the joint positioning frame (27) and pass through the fixing frame (25) to be slidably connected thereto; A positioning arm (29), one end of which is connected to the joint positioning frame (27), and the other end of which is in contact with the inner wall of the explosion-proof joint (2).

9. The process for preparing a high-pressure fire-resistant armored metal hose assembly according to claim 8, characterized in that: The positioning arm (29) comprises: A rotary joint (31), the rotary joint (31) is arranged in the middle of the positioning arm (29), the rotary joint (31) is rotatably connected to the edge of the positioning seat (15), and the positioning seat (15) is provided with a rotary seat (34) corresponding to the rotary joint (31); A ball head (32) is provided at one end of the positioning arm (29), and a plurality of support arms (35) are evenly connected to the joint positioning frame (27) in the circumferential direction, and a slide groove (36) is provided on the support arm (35), and the ball head (32) is slidably connected in the slide groove (36) and will not fall out; The clamping head (33) is arranged at the other end of the positioning arm (29). The portion where the positioning arm (29) is connected to the clamping head (33) is bent and forms a recessed area (37) at the connection. The clamping head (33) abuts against the inner wall of the explosion-proof joint (2), and the edge of the explosion-proof joint (2) is recessed in the recessed area (37).

10. The process for preparing a high-pressure fire-resistant armored metal hose assembly according to claim 5, characterized in that: The annular welding unit comprises: a transverse movement mechanism (41), a welding ring (42), an electric turning frame (43) and an auxiliary clamping plate (44). The transverse movement mechanism (41) is connected to the top of the machine platform (10) and is used to drive the welding ring (42) to move in the horizontal direction; an annular electric slide is provided in the welding ring (42), and the electric slide drives the welding gun (13) to move and is used to adjust the welding angle and position; the electric turning frame (43) is connected to one side of the outer wall of the welding ring (42), and the electric turning frame (43) can be turned left and right under the drive of a second motor (48); the auxiliary clamping plate (44) is connected to the electric turning frame (43), and two electric clamping claws (47) are symmetrically provided on the auxiliary clamping plate (44) for clamping and releasing the hose body (1).

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