High pressure composite pipe welding apparatus

Abstract

The application discloses high-pressure composite pipe welding equipment and relates to the technical field of welding equipment. The high-pressure composite pipe welding equipment comprises a mounting table and a mounting sleeve. A welding gun is mounted on the mounting table. A side plate is fixed to one side of the mounting table. The application realizes the dead-angle-free and full-coverage continuous welding of the butt joint of the high-pressure composite pipe through the cooperation of a rotating assembly, a bearing assembly, a deflection assembly, an identification assembly and a linkage assembly, guarantees the uniformity of the whole-circle weld formation, and in addition, in the welding process, the welding swing range is automatically widened for large-angle grooves, the wide-groove fusion is guaranteed, the swing range is automatically narrowed for small-angle grooves, the groove sidewall is protected, the heat input is strictly controlled, the self-adaptive and accurate welding of high-pressure composite pipes with different specifications and different groove taper is realized, the defects of liner dilution, interlayer peeling, incomplete fusion, slag inclusion and cracks are effectively avoided, and the welding quality of the high-pressure composite pipe and the long-term high-pressure service safety are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically high-pressure composite pipe welding equipment. Background Technology

[0002] High-pressure composite pipes, with their advantages of high strength, corrosion resistance, water hammer resistance, and excellent pressure bearing performance, are widely used in high-pressure and highly corrosive working environments such as municipal high-pressure gas transmission, high-rise high-pressure water supply, petrochemicals, hydrogenation units, and oil and gas gathering and transportation. At present, high-pressure composite pipes used in engineering are mainly divided into two categories: plastic high-pressure composite pipes and bimetallic metallurgical composite high-pressure steel pipes. Both types of pipes adopt multi-layer composite structures. Compared with traditional single-layer steel pipes and single-layer plastic pipes, their welding process requirements are more stringent, forming is more difficult, and there are more causes of defects. They place extremely high demands on the adaptive adjustment capability, bevel adaptation capability, and welding precision control of welding equipment.

[0003] In existing high-pressure composite pipe welding operations, metal high-pressure composite pipes, represented by bimetallic metallurgical composite high-pressure steel pipes, are metallurgically composite formed by carbon steel base and stainless steel or nickel-based corrosion-resistant inner lining. The thermal expansion coefficient, metallurgical properties, and corrosion resistance of the two materials are very different. Welding construction requires extremely high precision in beveling structure and welding trajectory control. Targeted beveling treatment is required. Beveling the pipe ends of metal high-pressure composite pipes can increase the fusion area between pipes, improve the overall structural strength of the welded joint, and meet the service requirements of high-pressure medium impact and water hammer load. On the other hand, a physical anti-melting step can be formed by a stepped bevel, which can realize the layered and zoned welding of the corrosion-resistant inner lining and the carbon steel base layer. This effectively prevents the outer carbon steel molten pool from invading the inner lining weld, avoids the dilution of chromium and nickel alloy elements in the weld, and ensures the corrosion resistance of the weld from the source. At the same time, it facilitates multi-layer and multi-pass low heat input welding and avoids the problem of delamination, peeling and cracking of the metallurgical interface of the composite pipe due to thermal stress.

[0004] In actual construction, metal high-pressure composite pipes of different specifications, wall thicknesses and working conditions need to be beveled at different angles, and cannot be uniformly adapted to a single bevel angle. Among them, thin-walled inner-lined composite pipes are adapted to small-angle narrow bevels, which can avoid excessive cutting of the base material and reduce the pressure-bearing section of the pipe wall. At the same time, the range of the molten pool is strictly controlled to prevent the thin corrosion-resistant inner lining from being punctured. Thick-walled high-pressure composite pipes adopt a large-angle wide bevel, which can expand the welding operation space, ensure full fusion of the bevel sidewalls, and avoid slag inclusion and incomplete fusion defects that are prone to occur in thick-walled welding. The standard stepped bevel, through its differentiated structure of a small-angle inner lining and a large-angle outer layer, takes into account both the requirements for preventing alloy dilution and efficient filling welding. After the bevel is processed, in order to ensure uniform fusion of the root and sidewalls of the bevel, eliminate welding dead corners, balance welding heat input, and avoid local overheating oxidation and stress concentration, the welding torch needs to move axially back and forth between the bevel gaps of the two sets of high-pressure composite pipes. By moving the electrode back and forth, the weld bead is evenly spread and the heat is evenly distributed, thereby improving the density of the bevel filling and the quality of the weld formation.

[0005] However, the reciprocating movement amplitude of the welding torch in existing traditional welding equipment is mostly preset and fixed parameters, which cannot be synchronously and adaptively adjusted according to the changes in the bevel angle and bevel opening width of the high-pressure composite pipe. This has significant technical defects. When the bevel angle increases and the bevel opening widens, the fixed small reciprocating movement amplitude cannot cover the entire bevel area, which will result in problems such as insufficient fusion of the bevel sidewall, incomplete filling, and weld formation depression. This can easily lead to stress concentration defects and induce cracks and leakage under high pressure conditions. When the bevel angle decreases and the bevel narrows, the fixed large reciprocating movement amplitude will cause the welding torch to swing beyond the limit, which is very easy to scratch and bump the bevel sidewall, causing slag inclusion, tungsten inclusion, and bevel damage. At the same time, it will cause a surge in local heat input, leading to quality problems such as interlayer thermal peeling of metal composite pipes and chromium depletion of the inner lining. To address these issues, we propose high-pressure composite pipe welding equipment. Summary of the Invention

[0006] The purpose of this invention is to provide high-pressure composite pipe welding equipment to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure composite pipe welding equipment, comprising an installation platform and an installation sleeve, wherein a welding torch is mounted on the installation platform, a side plate is fixed to one side of the installation platform, welding wire and a conveying component for conveying the welding wire are provided on the side plate, the installation sleeve is fitted onto the outside of the high-pressure composite pipe, and a locking component for locking after fitting is provided on the installation sleeve, the welding ends of the two sets of high-pressure composite pipes are beveled, an operating platform is rotatably connected to the outside of the installation sleeve, and a lifting component for assisting the lifting and lowering of the installation platform is provided on the operating platform, further comprising: A rotating assembly is disposed between the operating table and the mounting sleeve, and is used to drive the operating table to rotate, so that the operating table can rotate around the circumference of the mounting sleeve. A support component is disposed on one side of the operating table and is used for the support connection of the mounting table. A sliding component is provided between the support component and the mounting table to assist the sliding connection of the mounting table. The lifting component is used for lifting the support component. An oscillation assembly, mounted on a support assembly, is used to oscillate the mounting platform. The support assembly is equipped with a rotating assembly for driving the oscillation assembly. Through the cooperation of the rotating assembly, the oscillation assembly, and the sliding assembly, the mounting platform and the welding torch and welding wire on the mounting platform reciprocate between the bevels of the two sets of high-pressure composite pipes, parallel to the axial direction of the high-pressure composite pipes. On both sides of the mounting platform are identification assemblies for recognizing the bevel angles of the two sets of high-pressure composite pipes. A linkage assembly for auxiliary linkage is provided between the identification assembly and the oscillation assembly. Through the identification and transmission of the identification assembly and the linkage assembly, the amplitude of the reciprocating movement of the welding torch and welding wire increases synchronously with the increase of the bevel angle of the high-pressure composite pipe.

[0008] Preferably, the supporting component includes a top plate and a supporting frame, the supporting frame being located below the top plate, and the four corners between the top plate and the supporting frame being connected and fixed by multiple sets of fixing rods.

[0009] Preferably, the sliding assembly includes a transmission frame symmetrically fixed on both sides of the mounting platform, and multiple sets of mounting rods are slidably connected to the transmission frame through sliding holes, and the mounting rods are fixed to the bearing frame.

[0010] Preferably, the oscillation assembly includes a slide plate slidably connected to the transmission frame, and the two sets of slide plates are connected and fixed by two sets of symmetrically arranged connecting plates. The identification component and the linkage component are used to link the lifting and lowering of the connecting plate after identification. A transmission pin is fixed on the slide plate, and a transmission plate is provided on one side of the transmission frame. A transmission groove is opened on the transmission plate, and the transmission pin is slidably connected to the transmission groove.

[0011] Preferably, the rotating assembly includes a mounting bracket fixed to the top plate, a mounting shaft rotatably connected to the mounting bracket, one end of the transmission plate fixed to the mounting shaft, and a drive motor for driving the mounting shaft mounted on the mounting bracket.

[0012] Preferably, the identification component includes a mounting plate disposed on one side of the mounting platform, a fixed detection rod fixed on the mounting platform, an electromagnetic locking sleeve mounted on the mounting platform, a sliding detection rod slidably connected to the electromagnetic locking sleeve, and the fixed detection rod located between the sliding detection rod and the welding torch. In the initial state, the lower ends of the fixed detection rod and the sliding detection rod are flush, and the sliding detection rod and the welding torch are on the same axis. The mounting platform is provided with a moving component for moving the mounting plate. After the identification component identifies and drives the plate, the mounting platform is moved by the moving component, so that the sliding detection rod and the welding torch are not on the same axis, but the state after the lifting and lowering linkage of the connecting plate is maintained.

[0013] Preferably, the linkage component includes a groove formed at the bottom of the connecting plate, a slider slidably connected to the groove, one end of the sliding detection rod being fixed to the slider, and a positioning ring fixed on the sliding detection rod for positioning against the upper end of the mounting plate. Through positioning, the lower ends of the fixed detection rod and the sliding detection rod are made flush. A spring is sleeved on the outer side of the sliding detection rod, and the two ends of the spring are respectively connected to the slider and the mounting plate.

[0014] Preferably, the moving component includes a side frame mounted on one side of the mounting platform, and a cylinder for moving the mounting plate is mounted on the side frame.

[0015] Preferably, the rotating assembly includes a gear ring fixed to the outside of the mounting sleeve, a gear is rotatably connected to the operating table, the gear and the gear ring are meshed with each other, and an operating motor for driving the gear is provided on the operating table.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features a mechanical identification component and a linkage structure. Relying on the difference in physical contact stroke between the fixed detection rod and the sliding detection rod and the bevel slope, it can generate corresponding vertical sliding displacement according to different bevel tapers and different bevel opening widths, achieving accurate mechanical identification of the bevel angle. At the same time, the identification stroke is locked and fixed in real time by an electromagnetic locking sleeve, which can effectively avoid the problem of identification parameter deviation caused by welding vibration, equipment shaking, and high temperature environment interference. It solves the technical defects of traditional adaptive welding equipment that rely on electronic sensors, are prone to failure at high temperatures, have large drift errors, high failure rates, and high maintenance costs, and greatly improves the stability, reliability, and equipment environmental adaptability of bevel parameter identification. 2. This invention, through the multi-level mechanical linkage of the identification component, linkage component, and oscillation component, can automatically generate different transmission length differences based on the differentiated sliding stroke formed by the bevel slope push, thereby changing the effective swing stroke of the transmission plate in real time. This achieves an adaptive adjustment effect where the larger the bevel angle, the greater the axial reciprocating movement amplitude of the welding torch and welding wire, and the smaller the bevel angle, the narrower the swing amplitude. For large-angle wide bevels, the swing amplitude can be widened to ensure complete fusion and full filling of the sidewalls; for small-angle narrow bevels, the swing amplitude can be narrowed to avoid bevel scraping and eliminate slag inclusions and tungsten inclusion defects. It is fully adaptable to the bevel welding needs of high-pressure composite pipes with different wall thicknesses, different inner lining structures, and different working conditions. 3. After completing the bevel angle recognition and electromagnetic locking stroke, the present invention drives the recognition component to shift laterally as a whole through the moving component, so that the detection rod exits the welding torch welding motion axis, eliminating the mechanical obstruction and interference of the recognition structure on the axial reciprocating motion of the welding torch. This ensures both the mechanical accuracy of bevel recognition and the high-speed, stable and unobstructed operation of the welding reciprocating motion, solving the structural contradiction of traditional adaptive recognition mechanisms that are prone to interfering with welding motion and cannot simultaneously carry out detection and welding. 4. This invention combines circumferential welding with an axial adaptive reciprocating bar structure, which can evenly distribute the welding heat input and avoid local heat concentration. At the same time, through adaptive swing amplitude, it precisely matches the bevel shape and strictly controls the range and penetration depth of the molten pool under different bevel conditions. This effectively prevents the outer carbon steel base material from being excessively melted into the inner lining weld, eliminates the problem of chromium and nickel corrosion-resistant alloying elements dilution in the weld, and avoids defects such as interlayer thermal peeling, chromium depletion of the inner lining oxide, and microcracks. This makes the welded joint have both high strength and high corrosion resistance, and completely solves the problems of uncontrollable heat input, poor bevel compatibility, substandard weld performance, high-pressure leakage, corrosion failure, and short service life caused by traditional welding processes. It significantly improves the safety and stability of high-pressure composite pipelines under long-term high-pressure and strong corrosion conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a schematic diagram of the rotating component structure of the present invention; Figure 3 This is a schematic diagram showing the positional relationship between the mounting platform, welding torch, and welding wire of the present invention. Figure 4 This is a schematic diagram of the load-bearing component structure of the present invention; Figure 5 This is a schematic diagram showing the positional relationship between the mounting platform and the supporting components of the present invention; Figure 6 This is a schematic diagram of the sliding component, the yaw component, and the rotating component of the present invention; Figure 7 This is a schematic diagram of the identification component and the moving component of the present invention; Figure 8 This is a schematic diagram of the oscillation component and linkage component of the present invention; Figure 9 This is a schematic diagram showing the movement direction of the mounting platform during the transmission of the yaw component of the present invention; Figure 10 This is a schematic diagram showing the state of the identification component of the present invention before and after the transmission with the bevel. Figure 11 This is a schematic diagram showing the difference in transmission length of the swing component after the identification component and linkage component of the present invention are abutted against the bevels at different angles. Figure 12 This is a schematic diagram showing the change in sliding distance of the mounting platform after the identification component and linkage component of the present invention abut against the bevel at different angles. Figure 13 This is a schematic diagram of the state after the identification component of the present invention has identified and moved; Figure 14 This is a schematic diagram of the bevel angle at the end of the high-pressure composite pipe; Figure 15 This is a schematic diagram of the axial reciprocating movement direction of the welding torch of the present invention.

[0018] In the diagram: 101-Mounting platform; 102-Welding gun; 103-Side plate; 104-Welding wire; 105-Mounting sleeve; 106-Operating platform; 107-Lifting component; 201-Top plate; 202-Bearing frame; 203-Fixing rod; 301-Transmission frame; 302-Mounting rod; 401-Slide plate; 402-Transmission pin; 403-Connecting plate; 404-Transmission plate; 405-Transmission groove; 501-Mounting bracket; 502-Mounting shaft; 503-Drive motor; 601-Mounting plate; 602-Fixing detection rod; 603-Electromagnetic locking sleeve; 604-Sliding detection rod; 701-Slide groove; 702-Slider; 703-Spring; 801-Side frame; 802-Cylinder; 901-Gear ring; 902-Gear; 903-Operating motor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1-15 The high-pressure composite pipe welding equipment shown in the figure includes an installation platform 101 and an installation sleeve 105. A welding gun 102 is installed on the installation platform 101. A side plate 103 is fixed on one side of the installation platform 101. A welding wire 104 and a conveying component for conveying the welding wire 104 are provided on the side plate 103. The installation sleeve 105 is sleeved on the outside of the high-pressure composite pipe, and a locking component for locking after sleeved is provided on the installation sleeve 105. The welding ends of the two sets of high-pressure composite pipes are beveled. An operating platform 106 is rotatably connected to the outside of the installation sleeve 105. A lifting component 107 for assisting the lifting of the installation platform 101 is provided on the operating platform 106. It should be noted that: before welding, the pipe ends of the two sets of high-pressure composite pipes are beveled. The beveling angle is matched according to the pipe wall thickness, inner lining structure and pressure conditions to make the beveling of the two sets of pipes neat and the gap uniform, so as to ensure that the weld circumferential seam is uniform, without misalignment or eccentricity. After the end beveling of the two sets of high-pressure composite pipes is completed, the two sets of high-pressure composite pipes are supported by external support equipment and the central axes of the two sets of high-pressure composite pipes are aligned to maintain a high-precision concentric state. During the support process, the connecting ends of the two sets of high-pressure composite pipes are set together to complete the preparation before welding. After the preliminary preparation is completed, the installation sleeve 105 is put on the outside of the high-pressure composite pipe and locked and fixed by the locking component. After the locking and fixing is completed, the lifting component 107 set on the outside of the operating table 106 drives the overall bearing component to vertically lift and adjust. In the preliminary processing, the setting of the bevel of the high-pressure composite pipe, the treatment of the outer support of the high-pressure composite pipe, the locking of the locking component, the lifting of the lifting component 107 and the conveying of the conveying component are known technologies in the technical field of this application, and their specific mechanisms and principles will not be described in detail here. Furthermore, the specific welding principle and operation process of the welding torch 102 and the welding wire 104 are known technologies in the technical field of this application, and their specific mechanisms and principles will not be elaborated upon here.

[0021] Also includes: A rotating assembly is disposed between the operating table 106 and the mounting sleeve 105 for rotating the operating table 106, thereby causing the operating table 106 to rotate around the mounting sleeve 105. A support component is provided on one side of the operating table 106 for supporting the mounting table 101. A sliding component is provided between the support component and the mounting table 101 to assist the sliding connection of the mounting table 101. The lifting component 107 is used for lifting the support component. An oscillating component is mounted on the bearing component and is used to oscillate the mounting platform 101. The bearing component is equipped with a rotating component for driving the oscillating component. Through the cooperation of the rotating component, the oscillating component, and the sliding component, the mounting platform 101 and the welding torch 102 and welding wire 104 on the mounting platform 101 reciprocate between the bevels of the two sets of high-pressure composite pipes, parallel to the axial direction of the high-pressure composite pipes. On both sides of the mounting platform 101, there are identification components for identifying the bevel angles of the two sets of high-pressure composite pipes. A linkage component for auxiliary linkage is set between the identification component and the oscillating component. Through the identification and transmission of the identification component and the linkage component, the amplitude of the reciprocating movement of the welding torch 102 and welding wire 104 increases synchronously with the increase of the bevel angle of the high-pressure composite pipe. It should be noted that the coordinated operation of the rotating component, bearing component, swaying component, identification component, and linkage component enables seamless and continuous welding of the high-pressure composite pipe's butt joint circumferential seam, ensuring uniform and consistent weld formation throughout the entire circumference. Furthermore, during welding, the system automatically widens the welding sway for large-angle bevels to ensure full fusion, and automatically narrows the sway for small-angle bevels to protect the bevel sidewalls and strictly control heat input. This allows for adaptive and precise welding of high-pressure composite pipes of different specifications and bevel tapers, effectively avoiding defects such as lining dilution, interlayer peeling, lack of fusion, slag inclusions, and cracks, significantly improving the welding quality and long-term high-pressure service safety of the high-pressure composite pipe.

[0022] Preferably, the supporting component includes a top plate 201 and a supporting frame 202. The supporting frame 202 is located below the top plate 201, and the four corners between the top plate 201 and the supporting frame 202 are connected and fixed by multiple sets of fixing rods 203. It should be noted here that the support components facilitate the support and installation of the mounting platform 101.

[0023] Preferably, the sliding assembly includes a transmission frame 301 symmetrically fixed on both sides of the mounting platform 101, and a plurality of mounting rods 302 are slidably connected to the transmission frame 301 through sliding holes, and the mounting rods 302 are fixed on the bearing frame 202. It should be noted here that the transmission frame 301 and the mounting rod 302 assist in the sliding guidance of the mounting platform 101 after being subjected to force.

[0024] Preferably, the sway assembly includes a slide plate 401 slidably connected to the transmission frame 301. Two sets of slide plates 401 are connected and fixed by two sets of symmetrically arranged connecting plates 403. The identification assembly and the linkage assembly are used to lift and link the connecting plates 403 after identification. A transmission pin 402 is fixed on the slide plate 401. A transmission plate 404 is provided on one side of the transmission frame 301. A transmission groove 405 is opened on the transmission plate 404. The transmission pin 402 is slidably connected to the transmission groove 405. The rotation assembly includes a mounting bracket 501 fixed on the top plate 201. A mounting shaft 502 is rotatably connected to the mounting bracket 501. One end of the transmission plate 404 is fixed to the mounting shaft 502. A drive motor 503 for driving the mounting shaft 502 is installed on the mounting bracket 501. It should be noted here that: the drive motor 503 drives the mounting shaft 502 and the transmission plate 404 on the mounting shaft 502 to swing back and forth. During the swinging process of the transmission plate 404, the transmission pin 402 is squeezed by the groove wall of the transmission groove 405, which drives the slide plate 401 and the transmission frame 301 to move under force. During the movement, in conjunction with the sliding guide of the transmission frame 301 and the mounting rod 302, the mounting table 101 and the welding gun 102 and welding wire 104 on the mounting table 101 are driven to make parallel reciprocating linear motion along the pipe axis. In addition, the working principle and control method of the drive motor 503 are common drive components, and will not be described in detail here.

[0025] Preferably, the identification component includes a mounting plate 601 disposed on one side of the mounting platform 101, a fixed detection rod 602 fixed on the mounting platform 101, an electromagnetic locking sleeve 603 mounted on the mounting platform 101, a sliding detection rod 604 slidably connected to the electromagnetic locking sleeve 603, the fixed detection rod 602 being located between the sliding detection rod 604 and the welding torch 102, initially the lower ends of the fixed detection rod 602 and the sliding detection rod 604 being flush and the sliding detection rod 604 and the welding torch 102 being on the same axis, the mounting platform 101 being provided with a moving component for moving the mounting plate 601, after the identification component identifies and drives the mounting platform 101, the moving component moves the mounting platform 101. The sliding detection rod 604 is moved so that it is not on the same axis as the welding torch 102, but it maintains the state after the lifting and lowering linkage of the connecting plate 403. The linkage component includes a sliding groove 701 opened at the bottom of the connecting plate 403, a slider 702 slidably connected to the sliding groove 701, one end of the sliding detection rod 604 is fixed to the slider 702, and a positioning ring is fixed on the sliding detection rod 604 for positioning against the upper end of the mounting plate 601. Through the positioning action, the lower end of the fixed detection rod 602 is flush with the lower end of the sliding detection rod 604. A spring 703 is sleeved on the outer side of the sliding detection rod 604, and the two ends of the spring 703 are respectively connected to the slider 702 and the mounting plate 601. It should be noted here that: during the movement of the load-bearing component toward the bevel, the load-bearing component drives the entire mounting platform 101 to move downwards. Because the fixed detection rod 602 is located between the sliding detection rod 604 and the welding torch 102, during the downward movement, one end of the sliding detection rod 604 first abuts against the bevel, causing the sliding detection rod 604 to slide on the electromagnetic locking sleeve 603 of the mounting plate 601 until one end of the fixed detection rod 602 abuts against the bevel. Through the abutment action between the fixed detection rod 602 and the bevel, the load-bearing component stops moving downwards, and the sliding... As the detection rod 604 slides on the electromagnetic locking sleeve 603, it drives the connecting plate 403 to move upward synchronously through the connection between the slider 702 and the slide groove 701. During the upward movement of the connecting plate 403, the sliding plate 401 and the transmission pin 402 on the sliding plate 401 move upward synchronously. Due to the different inclination angles of different bevels, the vertical pushing stroke of the bevel slope on the sliding detection rod 604 is different, which forces the transmission pin 402 on the sliding plate 401 to move upward differently. In this way, the true angle of the current bevel is mechanically collected and identified, so as to achieve accurate mechanical identification.

[0026] Preferably, the moving component includes a side frame 801 mounted on one side of the mounting platform 101, and a cylinder 802 mounted on the side frame 801 for moving the mounting plate 601. It should be noted here that after the sliding detection rod 604 completes its adaptive vertical sliding and matches the current bevel taper by being pushed against the bevel slope, the electromagnetic locking sleeve 603 is energized and tightened to forcibly lock and fix the position of the sliding detection rod 604. After identification is completed and locking is achieved, the cylinder 802 extends and retracts to drive the mounting plate 601 to move laterally as a whole, which simultaneously drives the fixed detection rod 602, the electromagnetic locking sleeve 603, and the sliding detection rod 604 in the locked state to shift laterally as a whole, so that the sliding detection rod 604 and the welding gun 102 are no longer coaxial. In addition, the cylinder 802 and the electromagnetic locking sleeve 603 are conventional driving and locking components, and their working principles and control methods are known technologies in this application, so they will not be described in detail here.

[0027] Preferably, the rotating assembly includes a gear ring 901 fixed to the outside of the mounting sleeve 105, a gear 902 rotatably connected to the operating table 106, the gear 902 and the gear ring 901 being meshed with each other, and an operating motor 903 for driving the gear 902 is provided on the operating table 106. It should be noted here that: the output torque of the operating motor 903 drives the gear 902 to rotate. During the rotation of the gear 902, the gear 902 and the gear ring 901 mesh with each other, thereby driving the operating table 106 to rotate circumferentially around the axis of the mounting sleeve 105. In addition, the operating motor 903 is a conventional driving component, and its working principle and control method are known technologies in this application, so they will not be described in detail here.

[0028] In this plan, the high-pressure composite pipe welding equipment includes the following steps: Before welding, the ends of the two sets of high-pressure composite pipes are beveled. The bevel angle is matched according to the pipe wall thickness, inner lining structure and pressure conditions to make the bevels of the two sets of pipes neat and the gaps uniform. This ensures that the weld circumferential seam is uniform, without misalignment or eccentricity. After the end beveling of the two sets of high-pressure composite pipes is completed, the two sets of high-pressure composite pipes are supported by external support equipment to make the central axes of the two sets of high-pressure composite pipes coincide and always maintain a high-precision concentric state. During the support process, the connecting ends of the two sets of high-pressure composite pipes are set to abut each other, completing the preparation before welding. After the preliminary preparation is completed, the installation sleeve 105 is placed on the outside of the high-pressure composite pipe and locked and fixed by the locking component. After the locking and fixing is completed, the lifting component 107 set on the outside of the operating table 106 drives the overall bearing assembly to vertically lift and adjust. During the overall lifting and lowering of the bearing assembly, the installation table 101, welding gun 102, side plate 103 and welding wire 104 assembled on the outside of the side plate 103 are simultaneously vertically displaced. The head of the welding gun 102 and the end of the welding wire 104 are aligned with the center surface of the bevel joint of the two sets of high-pressure composite pipes to establish a standard welding reference. During the welding operation, the welding gun 102 generates a welding arc to melt and heat the pipe bevel base material. At the same time, the conveying component on the side plate 103 continuously and quantitatively feeds the welding wire 104, so that the welding wire 104 is fed synchronously with the welding gun 102 and melts and fills into the bevel gap of the two sets of high-pressure composite pipes to complete the bevel fusion, filling and cover welding operations. During the actual welding, the operating motor 903 outputs torque to drive the gear 902 to rotate. During the rotation of the gear 902, the gear 902 and the gear ring 901 mesh with each other, thereby driving the operating table 106 to rotate circumferentially around the axis of the mounting sleeve 105. During the rotation of the operating table 106, the upper bearing component, the mounting table 101, the welding gun 102 and the welding wire 104 are simultaneously driven to move in a circular motion around the pipe bevel, so as to realize the continuous welding of the high pressure composite pipe butt ring seam without dead angles and with full coverage, and ensure that the weld seam is formed uniformly and consistently. While performing circumferential rotary welding, the drive motor 503 drives the mounting shaft 502 and the transmission plate 404 on the mounting shaft 502 to reciprocate. During the reciprocating oscillation of the transmission plate 404, the transmission pin 402 is squeezed by the groove wall of the transmission groove 405, driving the slide plate 401 and the transmission frame 301 to move under force. During the movement, in conjunction with the sliding guide of the transmission frame 301 and the mounting rod 302, the mounting table 101 and the welding gun 102 and welding wire 104 on the mounting table 101 are driven to perform parallel reciprocating linear motion along the pipe axis (see...). Figure 9 and Figure 15 This axial reciprocating structure can evenly distribute the welding heat input, making the root of the bevel and the sidewalls fused evenly and densely, effectively improving the welding thermal stress of metal composite pipes and avoiding interlayer peeling and lining oxidation defects. During the entire welding process, before the equipment moves towards the bevel, in the initial state, the lower end faces of the fixed detection rod 602 and the sliding detection rod 604 on the identification component are flush, and the sliding detection rod 604 and the welding torch 102 maintain the same central axis (see...). Figure 6 , Figure 7 and Figure 8(In the state of motion), as the supporting component moves toward the bevel, the supporting component drives the mounting platform 101 to move downwards as a whole. Because the fixed detection rod 602 is located between the sliding detection rod 604 and the welding torch 102, during the downward movement, one end of the sliding detection rod 604 first abuts against the bevel, causing the sliding detection rod 604 to slide on the electromagnetic locking sleeve 603 of the mounting plate 601 until one end of the fixed detection rod 602 abuts against the bevel. Through the abutment action between the fixed detection rod 602 and the bevel, the supporting component stops moving downwards (see...). Figure 10 (In the state of sliding), as the sliding detection rod 604 slides on the electromagnetic locking sleeve 603, the connection between the slider 702 and the slide groove 701 causes the connecting plate 403 to move upward synchronously. During the upward movement of the connecting plate 403, the sliding plate 401 and the transmission pin 402 on the sliding plate 401 move upward synchronously. Due to the different inclination angles of the different bevels, the vertical pushing stroke of the bevel's inclined surface on the sliding detection rod 604 varies, causing a difference in the upward movement of the transmission pin 402 on the sliding plate 401 (see...). Figure 11 (Status), thereby mechanically collecting and identifying the true angle of the current bevel, achieving precise mechanical identification; After the sliding detection rod 604 completes its adaptive vertical sliding and matches the current bevel angle by being pushed against the bevel slope, the electromagnetic locking sleeve 603 is energized and tightened, forcibly locking and fixing the position of the sliding detection rod 604. After identification and locking are completed, the cylinder 802 extends and retracts, driving the mounting plate 601 to move laterally as a whole, simultaneously causing the fixed detection rod 602, the electromagnetic locking sleeve 603, and the sliding detection rod 604 in the locked state to shift laterally, so that the sliding detection rod 604 and the welding torch 102 are no longer coaxial (see...). Figure 14 (in the state), to eliminate the obstruction and interference caused by the detection rod to the welding axial reciprocating motion. In addition, during the lateral movement, due to the locking effect of the sliding detection rod 604, the upward pushing state of the slide plate 401 and the transmission pin 402 can be maintained. After the bevel identification is completed, based on the different bevel taper sizes, the sliding detection rod 604 generates differentiated vertical sliding strokes, which in turn changes the transmission base point height of the oscillation component, forming different transmission length differences, and ultimately adaptively changes the reciprocating swing amplitude of the welding torch 102, as detailed below: When the bevel angle of the high-pressure composite pipe is large, the vertical pushing stroke of the slope against the sliding detection rod 604 is small, causing the transmission pin 402 to move upward with a small stroke (the distance between the transmission pin 402 and the mounting shaft 502 is relatively long). A single swing of the transmission plate 404 can push the transmission frame 301 and the mounting table 101 to move with a large stroke, which ultimately increases the axial reciprocating movement amplitude of the welding gun 102 and the welding wire 104, matching the full coverage fusion requirement of the large-angle wide bevel, and ensuring that the two side walls of the bevel are fully fused and filled. When the bevel angle of the high-pressure composite pipe is small, the vertical pushing stroke of the sliding detection rod 604 increases, causing the transmission pin 402 to move upward with a large stroke (the distance between the transmission pin 402 and the mounting shaft 502 is shortened). A single swing of the transmission plate 404 can push the transmission frame 301 and the mounting table 101 to move with a small stroke, which ultimately reduces the axial reciprocating movement amplitude of the welding torch 102 and the welding wire 104, adapting to the narrow bevel and small welding gap, and avoiding defects such as excessive swing amplitude scraping the bevel sidewall, slag inclusion, incomplete fusion, and excessive heat input.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. High-pressure composite pipe welding equipment, including: The mounting platform (101) and mounting sleeve (105) are provided. A welding torch (102) is mounted on the mounting platform (101). A side plate (103) is fixed on one side of the mounting platform (101). A welding wire (104) and a conveying component for conveying the welding wire (104) are provided on the side plate (103). The mounting sleeve (105) is fitted on the outside of the high-pressure composite pipe. A locking component for locking after fitting is provided on the mounting sleeve (105). The welding ends of the two sets of high-pressure composite pipes are beveled. An operating table (106) is rotatably connected to the outside of the mounting sleeve (105). A lifting component (107) for assisting the lifting of the mounting platform (101) is provided on the operating table (106). Its characteristic is that it further includes: A rotating assembly is disposed between the operating table (106) and the mounting sleeve (105) for rotating the operating table (106). The rotating assembly causes the operating table (106) to rotate around the mounting sleeve (105). A support component is provided on one side of the operating table (106) for supporting the connection of the mounting platform (101). A sliding component is provided between the support component and the mounting platform (101) to assist the sliding connection of the mounting platform (101). The lifting component (107) is used for lifting the support component. A swaying component is mounted on a bearing component and is used to sway the mounting platform (101). The bearing component is provided with a rotating component for driving the swaying component. Through the cooperation of the rotating component, the swaying component and the sliding component, the mounting platform (101) and the welding torch (102) and welding wire (104) on the mounting platform (101) reciprocate between the bevels of the two sets of high-pressure composite pipes, parallel to the axial direction of the high-pressure composite pipes. The mounting platform (101) is provided with identification components on both sides for identifying the bevel angles of the two sets of high-pressure composite pipes. A linkage component for auxiliary linkage is provided between the identification component and the swaying component. Through the identification and transmission of the identification component and the linkage component, the amplitude of the reciprocating movement of the welding torch (102) and welding wire (104) increases synchronously with the increase of the bevel angle of the high-pressure composite pipe.

2. The high-pressure composite pipe welding equipment according to claim 1, characterized in that: The supporting component includes a top plate (201) and a supporting frame (202). The supporting frame (202) is located below the top plate (201). The four corners between the top plate (201) and the supporting frame (202) are connected and fixed by multiple sets of fixing rods (203).

3. The high-pressure composite pipe welding equipment according to claim 2, characterized in that: The sliding assembly includes a transmission frame (301) symmetrically fixed on both sides of the mounting platform (101). Multiple sets of mounting rods (302) are slidably connected to the transmission frame (301) through sliding holes. The mounting rods (302) are fixed on the bearing frame (202).

4. The high-pressure composite pipe welding equipment according to claim 3, characterized in that: The sway component includes a slide plate (401) slidably connected to the transmission frame (301). The two sets of slide plates (401) are connected and fixed by two sets of symmetrically arranged connecting plates (403). The identification component and the linkage component are used to lift and link the connecting plates (403) after identification. A transmission pin (402) is fixed on the slide plate (401). A transmission plate (404) is provided on one side of the transmission frame (301). A transmission groove (405) is opened on the transmission plate (404). The transmission pin (402) is slidably connected to the transmission groove (405).

5. The high-pressure composite pipe welding equipment according to claim 4, characterized in that: The rotating assembly includes a mounting bracket (501) fixed on the top plate (201), a mounting shaft (502) rotatably connected to the mounting bracket (501), one end of the transmission plate (404) fixed to the mounting shaft (502), and a drive motor (503) for driving the mounting shaft (502) mounted on the mounting bracket (501).

6. The high-pressure composite pipe welding equipment according to claim 5, characterized in that: The identification component includes a mounting plate (601) disposed on one side of the mounting platform (101). A fixed detection rod (602) is fixed on the mounting platform (101). An electromagnetic locking sleeve (603) is installed on the mounting platform (101). A sliding detection rod (604) is slidably connected to the electromagnetic locking sleeve (603). The fixed detection rod (602) is located between the sliding detection rod (604) and the welding torch (102). In the initial state, the lower ends of the fixed detection rod (602) and the sliding detection rod (604) are flush and the sliding detection rod (604) and the welding torch (102) are on the same axis. A moving component for moving the mounting plate (601) is provided on the mounting platform (101). After the identification component identifies and drives the component, the mounting platform (101) is moved by the moving component so that the sliding detection rod (604) and the welding torch (102) are not on the same axis but maintain the state after the lifting and lowering linkage of the connecting plate (403).

7. The high-pressure composite pipe welding equipment according to claim 6, characterized in that: The linkage component includes a slide groove (701) at the bottom of the connecting plate (403), a slider (702) is slidably connected to the slide groove (701), one end of the sliding detection rod (604) is fixed to the slider (702), and a positioning ring is fixed on the sliding detection rod (604) for positioning against the upper end of the mounting plate (601). Through the positioning action, the lower ends of the fixed detection rod (602) and the sliding detection rod (604) are flush. A spring (703) is sleeved on the outside of the sliding detection rod (604), and the two ends of the spring (703) are respectively connected to the slider (702) and the mounting plate (601).

8. The high-pressure composite pipe welding equipment according to claim 6, characterized in that: The moving component includes a side frame (801) mounted on one side of the mounting platform (101), and a cylinder (802) for moving the mounting plate (601) is mounted on the side frame (801).

9. The high-pressure composite pipe welding equipment according to claim 1, characterized in that: The rotating assembly includes a gear ring (901) fixed to the outside of the mounting sleeve (105), a gear (902) is rotatably connected to the operating table (106), the gear (902) and the gear ring (901) are meshed with each other, and an operating motor (903) for driving the gear (902) is provided on the operating table (106).

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