Auxiliary fixture assembly for pipe welding processing of a photo-thermal power station

Abstract

The utility model discloses a kind of auxiliary fixture assemblies for photothermal power station pipeline welding processing, it is related to pipeline welding fixture technical field, including first adjusting column, first bearing frame, intermediate bearing frame, second bearing frame, two first bolts and several gyro wheels;Horizontal first adjusting column is fixedly connected by bearing platform, the bottom end of first bearing frame and second bearing frame is slidably covered in the outside of first adjusting column, the top of first bearing frame, intermediate bearing frame and second bearing frame is arc plate, and the top surface of the both sides of arc plate is rotatably connected with gyro wheel;It further includes vertical second adjusting column, fixed rod, second bolt, lower pressing frame and positioning mechanism;Second adjusting column is fixed on the top surface of bearing platform, and the middle of fixed rod is slidably covered outside second adjusting column, and lower pressing frame is fixed on the right end of fixed rod, and the bottom end of lower pressing frame is elastically supported V-shaped plate, and the four corners of V-shaped plate are rotatably connected with gyro wheel.Gyro wheel allows pipeline to rotate when welding, and the bottom end of lower pressing frame is elastically supported V-shaped plate, and pipeline is not easy to scratch.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding fixture technology, specifically an auxiliary fixture assembly for pipeline welding processing in solar thermal power plants. Background Technology

[0002] The auxiliary clamping assembly for pipeline welding in solar thermal power plants is a tool set designed specifically for pipeline welding scenarios in solar thermal power plants. Its core function is to ensure the accuracy, quality and efficiency of pipeline welding through functions such as precise positioning, stable clamping and posture adjustment. It can adapt to the special working conditions and corresponding welding process requirements faced by pipelines in solar thermal power plants, such as high temperature, high pressure and corrosion resistance.

[0003] In contrast, a pipe welding clamp with application number CN202321919271.8, while capable of clamping and positioning the main pipe and branch pipes, ensuring the radial alignment of the branch pipe axis with the main pipe, and offering ease of operation, has significant limitations: this clamp is only suitable for scenarios where branch pipes are welded to the side of the main pipe, and cannot be compatible with the straight pipe connections commonly found in concentrated solar power (CSP) plants. Furthermore, because the clamp is directly clamped onto the pipe, the lack of elastic cushioning in the contact between the clamp and the pipe causes clamp marks or deformation on the pipe's outer surface, making it difficult to meet the specific requirement of a smooth surface for pipe welding in CSP plants.

[0004] Based on this, this solution proposes "an auxiliary fixture assembly for welding and processing pipelines in solar thermal power plants" to address the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary clamping assembly for welding pipelines in solar thermal power plants, in order to solve the problem of lack of elastic buffer design mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An auxiliary fixture assembly for welding pipelines in a solar thermal power plant includes a support platform and a horizontal adjustment mechanism and a vertical adjustment mechanism respectively connected to the support platform;

[0008] The horizontal adjustment mechanism includes: a first adjustment column with a rectangular cross-section, a first and second support frame arranged vertically and having the same structure, two first bolts and several rollers, and an intermediate support frame fixed in the middle of the first adjustment column;

[0009] The two ends of the horizontally arranged first adjusting column are fixedly connected by the bearing platform. The bottom ends of the first bearing frame and the second bearing frame are respectively slidably sleeved on the outer surface of the first adjusting column and located on both sides of the intermediate bearing frame. The bottom ends of the first bearing frame and the second bearing frame are provided with a first through hole with internal thread, and the first bolt is threadedly connected to the first through hole.

[0010] The top of the first support frame, the second support frame, and the intermediate support frame are arc-shaped plates, and rollers supporting the bottom of the pipe are rotatably connected to the top surfaces on both sides of the arc-shaped plates. The rotation axis of the rollers is horizontal.

[0011] The vertical adjustment mechanism includes: a second vertical adjustment column, a fixing rod, a second bolt, and a lower pressure frame;

[0012] The second adjusting column is fixed on the top surface of the support platform. The middle of the fixing rod is slidably sleeved on the outer surface of the second adjusting column. The left end of the fixing rod is horizontal and has a second through hole with internal thread. The second bolt is threaded to the second through hole. The right end of the fixing rod is horizontal and has a lower pressure frame fixed thereon. The lower pressure frame elastically supports the V-shaped plate. Four rollers with horizontal rotation axes are rotatably connected at the four corners of the V-shaped plate.

[0013] The four rollers rotatably connected to the intermediate support frame and the four rollers connected to the V-shaped plate are positioned vertically corresponding to each other.

[0014] Furthermore, the support platform is a U-shaped structure with right angles at the bends, and the support platform surrounds three sides of the first adjusting column.

[0015] Furthermore, the lower pressure frame is a split mechanism and includes a fixed sleeve that is fixedly fitted onto the middle part of the right end of the fixed rod, a spring, and a Y-shaped rod that slides with the fixed sleeve;

[0016] The fixing sleeve is an inverted T-shape, the horizontal tube of the fixing sleeve is fixedly sleeved on the fixing rod, and the vertical tube of the fixing sleeve is hollow inside;

[0017] The two ends of the Y-shaped rod slide through the fixing sleeve and the fixing rod, respectively;

[0018] The Y-shaped rod has a ring protrusion fixed inside the vertical tube, and the ring protrusion slides against the inner wall of the vertical tube; a spring abuts between the top surface of the ring protrusion and the top plate of the vertical tube.

[0019] The bottom end of the Y-shaped rod is fixed to the V-shaped plate.

[0020] Furthermore, the top of the Y-shaped rod is a sphere, and the outer diameter of the sphere is larger than the inner diameter of the top plate of the vertical tube.

[0021] Furthermore, it also includes a sealing rod, a sealing nut, and a movable sealing block. The sealing rod includes a fixed screw and a fixed sealing block. The sealing nut and the movable sealing block are threaded onto the outside of the screw. The movable sealing block and the fixed sealing block are symmetrical frustum structures with a rubber layer on the outer surface of the frustum structure. The thinner end of the movable sealing block and the fixed sealing block can extend into the inside of the pipe.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. The horizontal adjustment mechanism and support platform design offer significant flexibility and stability: The first adjustment column, in conjunction with the first and second support frames and the first bolt, allows for flexible adjustment of the support position to accommodate pipes of different lengths. The rectangular cross-section of the first adjustment column restricts the rotation of the support frame, ensuring stable support after adjustment and preventing pipe displacement.

[0024] 2. Roller design enhances welding precision and ease of operation: The rollers on the first support frame, second support frame, intermediate support frame and lower pressure frame can support the pipe evenly from multiple directions to ensure the pipe is under balanced force; the rotatable rollers allow the pipe to rotate freely during welding, which is convenient for adjusting the welding angle, while limiting the lateral displacement of the pipe, ensuring the pipe axis is aligned and improving welding precision.

[0025] 3. The lower pressure frame and all rollers achieve all-round fixation and convenient operation: The V-shaped plate at the bottom of the lower pressure frame enhances the load-bearing capacity, and together with the four rectangular rollers, it forms an all-round wrapping and fixation with the four rollers from the middle support frame below to prevent the pipe from shaking; the design of the elastic support V-shaped plate of the lower pressure frame provides cushioning to avoid scratches on the outer surface of the pipe, facilitates quick loading and unloading of the pipe, and improves operating efficiency. Attached Figure Description

[0026] Figure 1 This is a side view of the auxiliary fixture assembly for welding pipelines in a thermal power plant disclosed in this utility model.

[0027] Figure 2 This is a schematic diagram of the structure of the lower pressure frame disclosed in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the first adjusting column and the second adjusting column disclosed in this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the second bolt disclosed in this utility model;

[0030] Figure 5 This is a schematic diagram of the second support frame and the first bolt structure disclosed in this utility model;

[0031] Figure 6 This is a schematic diagram of the split-structure lower pressure frame disclosed in this utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the sealing rod and movable sealing block disclosed in this utility model.

[0033] In the diagram: 1. Support platform; 2. First adjusting column; 3. Second adjusting column; 4. First support frame; 5. Second support frame; 6. First bolt; 7. Roller; 8. Lower pressure frame; 9. Second bolt; 11. Y-shaped rod; 111. Ring protrusion; 12. Fixed rod; 13. Sealing rod; 14. Movable sealing block. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-7 An auxiliary fixture assembly for welding pipelines in a solar thermal power plant includes a support platform 1 and a horizontal adjustment mechanism and a vertical adjustment mechanism respectively connected to the support platform 1.

[0036] The support platform 1 is the mounting base for the entire auxiliary clamp assembly, serving to support the horizontal adjustment mechanism and the vertical adjustment mechanism.

[0037] The horizontal adjustment mechanism includes: a first adjustment column 2 with a rectangular cross section, a first support frame 4 and a second support frame 5 arranged vertically and identically, two first bolts 6 and several rollers 7, and an intermediate support frame located between the first support frame 4 and the second support frame 5.

[0038] The two ends of the horizontally arranged first adjusting column 2 are fixedly connected by the support platform 1. The bottom ends of the first support frame 4 and the second support frame 5 are slidably sleeved on the outer surface of the first adjusting column 2. The bottom ends of the first support frame 4 and the second support frame 5 are rectangular shells with a cross-section matching the outer surface of the first adjusting column 2. The bottom ends of the first support frame 4 and the second support frame 5 are provided with first through holes with internal threads. The first bolts 6 are threaded to each first through hole. The first support frame 4 and the second support frame 5 can be thickened at the locations of the first through holes to increase the length of the first through holes. The first bolts 6 are arranged horizontally. By tightening the first bolts 6 until the end face of the first bolt tightly presses against the outer surface of the first adjusting column 2, the positions of the first support frame 4 and the second support frame 5 can be fixed. Loosening the first bolts allows the first support frame 4 and the second support frame 5 to slide along the outer surface of the first adjusting column 2. A handle can be provided on the outside of the first bolt 6. The first bolt is T-shaped to facilitate rotation of the first bolt 6.

[0039] The first adjusting column with a rectangular cross-section prevents the first and second support frames from rotating, and the first bolt can lock the position of the first support frame to ensure stable support.

[0040] The top of the first support frame 4 and the second support frame 5 is an arc-shaped plate. Rollers 7 that support the bottom of the pipe are rotatably connected to the top surfaces of the arc-shaped plate on both sides. The rotation axis of the rollers 7 is horizontal. The arc-shaped plate is low in the middle and high on both sides. The rollers 7 are rotatably connected to the higher sides. The rollers play the role of supporting the two sides of the bottom of the pipe.

[0041] The vertical adjustment mechanism includes: a second vertical adjustment column 3, a fixing rod 12, a second bolt 9, a lower pressure frame 8, and a positioning mechanism.

[0042] The second adjusting column 3 is fixed to the top surface of the support platform 1. The fixing rod 12 is cross-shaped, including vertically intersecting hollow vertical tubes and a hollow horizontal bar at the left end, which is perpendicular to the first adjusting column 2. The middle (vertical tube) of the fixing rod 12 slides on the outer surface of the second adjusting column 3, allowing the fixing rod to move up and down. The left end of the fixing rod 12 is horizontally positioned and has a second through hole with internal threads. The axially horizontal second bolt 9 is threaded into the second through hole, thus the second bolt 9 serves to fix the height of the fixing rod 12. A handle can be provided on the second bolt 9 for easy rotation. The right end of the fixing rod 12 is horizontally positioned and fixed with a lower pressure frame 8. The lower pressure frame 8 elastically supports a V-shaped plate, and four horizontally rotating rollers 7 are rotatably connected at the four corners of the V-shaped plate. The V-shaped plate is located directly above the middle of the fixing rod 12 and is used to press down on the top surface of the pipe.

[0043] The top of the intermediate support frame is also an arc-shaped plate. Four rollers are rotatably connected at the four corners of the arc-shaped plate to support the bottom of the pipe. The four rollers from the intermediate support frame and the V-shaped plate are vertically aligned, that is, distributed in two vertical planes, and can be used to clamp the circumference of the two pipes being connected.

[0044] The V-shaped plate enhances load-bearing capacity, and four rectangularly distributed rollers, along with the lower rollers, provide all-around pipe fixation. The lower pressure bracket 8 provides elastic support to the V-shaped plate, preventing pipe deformation. The pipe connection point is located below the V-shaped bracket.

[0045] The bottom end of the lower pressure frame 8 can be connected to a V-shaped plate by a spring, or the preferred embodiment described later can be used.

[0046] The sliding fixing rod can be used to adapt to different pipe sizes, and then locked with a second bolt to improve stability and adaptability. The vertical adjustment mechanism is for easy installation and removal of pipes by lifting the lower pressure frame 8, and can also adapt to pipes of different sizes.

[0047] The first and second bolts have the same structure, which reduces the number of parts. Both the first and second support frames are rotatably connected to symmetrically distributed rollers. The symmetrical rollers provide uniform support on both sides of the pipe and can adjust the welding angle as the pipe rotates, ensuring axis alignment and improving welding accuracy.

[0048] In a preferred embodiment, the support platform 1 is a U-shaped structure with right angles at the bends, and the support platform 1 surrounds three sides of the first adjusting column 2. The first adjusting column 2 is located in the hollow part of the support platform 1.

[0049] In a preferred embodiment, the lower pressure frame 8 is a split mechanism and includes a fixed sleeve that is fixedly sleeved on the middle part of the right end of the fixed rod 12, a spring, and a Y-shaped rod 11 that slides with the fixed sleeve.

[0050] The fixing sleeve is an inverted T-shape. The horizontal tube of the fixing sleeve is fixedly connected to the middle part of the right end of the fixing rod 12. The vertical tube of the fixing sleeve is hollow inside.

[0051] The two ends of the Y-shaped rod 11 slide through the fixing sleeve and the fixing rod respectively, and the two ends of the Y-shaped rod 11 are exposed through the fixing sleeve and the fixing rod 12.

[0052] The Y-shaped rod 11 has a ring-shaped protrusion 111 fixed inside the vertical pipe, which slides against the inner wall of the vertical pipe. A spring abuts between the top surface of the ring-shaped protrusion 111 and the top plate of the vertical pipe, thus creating an elastic connection between the Y-shaped rod 11 and the fixing sleeve. This design helps protect the pipe, allowing the V-shaped plate to press more tightly against the pipe, and even if the pipe experiences slight displacement, the rollers are less likely to damage it. Additionally, it reduces the precision requirements for the height of the fixing rod 12.

[0053] The bottom end of the Y-shaped rod 11 is fixed with a V-shaped plate, making the overall shape of the Y-shaped rod 11 an inverted Y shape. When the top of the Y-shaped rod 11 is manually lifted, the spring is compressed, and the V-shaped plate can be lifted away from the pipe. When installing pipes with very similar diameters, the pipe can be installed horizontally between the upper and lower rollers by manually lifting the Y-shaped rod 11, and then the Y-shaped rod 11 can be lowered down.

[0054] Furthermore, the top of the Y-shaped rod 11 is a sphere, and the outer diameter of the sphere is larger than the inner diameter of the top plate of the vertical tube. In order to pass through the Y-shaped rod 11, the top plate of the vertical tube of the fixing sleeve is annular, so that the sphere will not detach downward from the fixing sleeve.

[0055] In a preferred embodiment, the system further includes a sealing rod 13, a sealing nut, and a movable sealing block 14. The sealing rod 13 includes a fixed screw and a fixed sealing block, both coaxially designed. The sealing nut and the movable sealing block 14 are threaded onto the outside of the screw. The movable sealing block 14 and the fixed sealing block are symmetrical frustum structures with a rubber layer on their outer surface. The sealing nut is located outside the movable sealing block 14. The thinner ends of the movable sealing block 14 and the fixed sealing block face both ends of the clamped pipe, with only the thinner ends able to extend into the pipe. The rubber layer increases the friction between the movable sealing block 14 and the fixed sealing block and the pipe, protecting the pipe from damage. The pipe is then clamped between the movable sealing block 14 and the fixed sealing block, and the sealing nut secures the movable sealing block 14 to the screw. This ensures coaxiality for the two connected pipes and also allows them to rotate synchronously. Alternatively, the sealing rod 13 can be manually rotated to achieve simultaneous rotation of the two pipes.

[0056] In a preferred embodiment, the arc-shaped plate on the first support frame 4 is connected to two rollers 7, and the arc-shaped plate on the second support frame 5 is connected to two rollers 7.

[0057] The length of the V-shaped plate along the pipe, the length of the arc-shaped plate along the pipe, and the number of rollers on the V-shaped plate, the first support frame, and the second support frame 5 are designed as needed to suit different pipes.

[0058] Working Principle: When using an auxiliary clamp assembly for welding pipelines in a solar thermal power plant, the positions of the first support frame 4 and the second support frame 5 on the first adjusting column 2 are first adjusted according to the size of the pipeline to be welded. After sliding both to a position matching the pipeline, the first bolt 6 is tightened. The square column structure of the first adjusting column 2 restricts the rotation of the support frame, ensuring stable support. The pipeline is then placed on the symmetrical rollers 7 above the first support frame 4 and the second support frame 5, at which point the rollers 7 on both sides provide balanced support from the bottom. Then, the fixing rod 12 is slid down on the cylindrical second adjusting column 3 to adapt to the pipeline size, and then locked with the second bolt 9 to complete the basic size adaptation. Alternatively, the position of the fixing rod 12 can be readjusted on-site according to the position of the V-shaped plate.

[0059] During welding, since the rollers 7 are rotatably connected to the pipe, the pipe can be manually rotated around its axis, facilitating the adjustment of the welding angle and ensuring precise handling of the welding position along the circumference of the pipe. Simultaneously, the symmetrically distributed rollers 7 limit lateral displacement of the pipe, ensuring that the axes of the two pipe sections remain aligned, thus improving welding accuracy. After welding is complete, the fixing rod 12 is moved upwards.

[0060] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary fixture assembly for welding pipelines in a solar thermal power plant, characterized in that: It includes a support platform (1) and a horizontal adjustment mechanism and a vertical adjustment mechanism respectively connected to the support platform (1); The horizontal adjustment mechanism includes: a first adjustment column (2) with a rectangular cross section, a first support frame (4) and a second support frame (5) arranged vertically and having the same structure, two first bolts (6) and several rollers (7), and an intermediate support frame fixed in the middle of the first adjustment column (2); The two ends of the horizontally arranged first adjusting column (2) are fixedly connected by the bearing platform (1). The bottom ends of the first bearing frame (4) and the second bearing frame (5) are respectively slidably sleeved on the outer surface of the first adjusting column (2) and located on both sides of the intermediate bearing frame. The bottom ends of the first bearing frame (4) and the second bearing frame (5) are provided with a first through hole with internal thread. The first bolt (6) is threadedly connected to the first through hole. The top of the first support frame (4), the second support frame (5), and the intermediate support frame are respectively arc-shaped plates. The top surfaces of the two sides of the arc-shaped plates are rotatably connected to rollers (7) that support the bottom surface of the pipe. The rotation axis of the rollers (7) is horizontal. The vertical adjustment mechanism includes: a second vertical adjustment column (3), a fixing rod (12), a second bolt (9), and a lower pressure frame (8); The second adjusting column (3) is fixed on the top surface of the support platform (1). The middle of the fixing rod (12) is slidably sleeved on the outer surface of the second adjusting column (3). The left end of the fixing rod (12) is horizontal and has a second through hole with internal thread. The second bolt (9) is threadedly connected to the second through hole. The right end of the fixing rod (12) is horizontal and has a lower pressure frame (8) fixed. The lower pressure frame (8) elastically supports the V-shaped plate. Four rollers (7) with horizontal rotation axes are rotatably connected at the four corners of the V-shaped plate. The four rollers (7) rotatably connected on the intermediate support frame and the four rollers (7) connected on the V-shaped plate are vertically aligned.

2. The auxiliary fixture assembly for welding pipelines in a solar thermal power plant according to claim 1, characterized in that: The support platform (1) is a U-shaped structure with right angles at the bends, and the support platform (1) surrounds three sides of the first adjusting column (2).

3. The auxiliary fixture assembly for welding pipelines in a solar thermal power plant according to claim 1, characterized in that: The lower pressure frame (8) is a split mechanism and includes a fixed sleeve that is fixedly sleeved on the middle part of the right end of the fixed rod (12), a spring, and a Y-shaped rod (11) that slides with the fixed sleeve. The fixing sleeve is an inverted T-shape, the horizontal tube of the fixing sleeve is fixedly sleeved on the fixing rod (12), and the vertical tube of the fixing sleeve is hollow inside; The two ends of the Y-shaped rod (11) slide through the fixed sleeve and the fixed rod (12) respectively. The Y-shaped rod (11) has a ring protrusion (111) fixed inside the vertical tube. The ring protrusion (111) slides against the inner wall of the vertical tube. A spring abuts between the top surface of the ring protrusion (111) and the top plate of the vertical tube. The bottom end of the Y-shaped rod (11) is fixed to the V-shaped plate.

4. The auxiliary fixture assembly for welding pipelines in a solar thermal power plant according to claim 3, characterized in that: The top of the Y-shaped rod (11) is a sphere, and the outer diameter of the sphere is larger than the inner diameter of the top plate of the vertical tube.

5. The auxiliary fixture assembly for welding pipelines in a solar thermal power plant according to claim 1, characterized in that: It also includes a sealing rod (13), a sealing nut, and a movable sealing block (14). The sealing rod (13) includes a fixed screw and a fixed sealing block. The sealing nut and the movable sealing block (14) are threaded onto the outside of the screw. The movable sealing block (14) and the fixed sealing block are symmetrical frustum structures. The outer surface of the frustum structure has a rubber layer. The thinner end of the movable sealing block (14) and the fixed sealing block can extend into the inside of the pipe.

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