A multi-directional self-adaptive stop device for large-diameter pipeline weld repair

Abstract

The present application relates to a kind of multi-directional self-adaptive stop device for large-diameter pipeline weld repair, belong to the technical field of pipeline welding, including installation base plate, electric slide rail is installed at the top of installation base plate, two groups of electric sliding blocks are slidably installed on electric slide rail, each group of electric sliding block is fixedly installed with self-adaptive clamping device, self-adaptive clamping device includes mounting bracket, clamping hoop is installed at the top of mounting bracket, multiple telescopic cylinders are evenly arranged in the circumferential direction of the outer ring of clamping hoop, the telescopic shaft of telescopic cylinder is slidably penetrated through clamping hoop and is fixedly connected with self-adaptive clamp plate;It also includes control module, the side of each self-adaptive clamp plate close to repair pipeline is installed with pressure sensor one, displacement sensor for detecting the displacement of electric sliding block is installed on electric slide rail, pressure sensor one and displacement sensor are electrically connected with control module.The present application can clamp in all directions to pipeline, and adapt to different pipeline pipe diameter, and can be self-adaptively adjusted, and good stability.

Description

Technical Field

[0001] This invention relates to a multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines, belonging to the field of pipeline welding technology. Background Technology

[0002] With the widespread application of large-diameter pipelines in thermal power, nuclear power and other fields, the quality problems of their weld repair are becoming increasingly prominent. In traditional repair processes, pipelines are prone to axial and radial sway due to their own weight or external loads, resulting in defects such as porosity, cracks and lack of fusion in the repaired welds, which seriously threaten the safety of pipeline service.

[0003] To suppress pipe swaying during repairs, simple clamps are typically used as a temporary stabilizing measure on construction sites. However, this method has the following significant limitations: 1. The inner diameter of the clamp needs to be precisely matched with the outer diameter of the pipe. Different pipe diameters require different specifications of clamps, which lacks versatility. At the same time, when dealing with pipes with varying wall thickness or irregular pipe sections, the clamp is difficult to form a uniform and reliable clamping force.

[0004] 2. The installation and tightening of clamps rely entirely on manual operation. The adjustment process is cumbersome and inefficient. Furthermore, the clamping stability is greatly affected by human factors, making it difficult to ensure that the pipeline remains in a stable constrained state during the repair process.

[0005] Therefore, improvements are urgently needed. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention designs a multi-directional adaptive stop device for repairing weld seams of large-diameter pipes. It can clamp the pipe in all directions, adapt to different pipe diameters, and can adaptively adjust with good stability.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A multi-directional adaptive stop device for repairing weld seams in large-diameter pipes includes a mounting base plate. An electric slide rail is mounted on the top of the mounting base plate. Two sets of electric sliders are slidably mounted on the electric slide rail. An adaptive clamping device is fixedly mounted on each set of electric sliders. The adaptive clamping device includes a mounting frame. A clamping clamp is mounted on the top of the mounting frame. Multiple telescopic cylinders are evenly arranged around the outer ring of the clamping clamp in the circumferential direction. The telescopic shaft of the telescopic cylinder slides through the clamping clamp and is fixedly connected to an adaptive clamping plate. It also includes a control module. Each of the adaptive clamps is equipped with a pressure sensor on the side near the repair pipe. The electric slide rail is equipped with a displacement sensor for detecting the displacement of the electric slider. Both the pressure sensor and the displacement sensor are electrically connected to the control module.

[0008] Furthermore, the clamping clamp includes a lower mounting clamp and an upper mounting clamp, the lower mounting clamp being fixedly mounted on the top of the mounting frame, and the upper mounting clamp being detachably mounted on the top of the lower mounting clamp.

[0009] Furthermore, both ends of the mounting base are vertically mounted with stop plates, and an elastic limiting device is provided between the stop plates and the mounting frame. The elastic limiting device includes a mounting box, and an elastic energy-absorbing mechanism is provided inside the mounting box. A U-shaped top rod is fixedly connected to the outer end of the elastic energy-absorbing mechanism, and a flexible top block is fixedly connected to the end of the U-shaped top rod near the mounting frame. The flexible top block is set to fit against the mounting frame.

[0010] Furthermore, the elastic energy absorption mechanism includes two parallel and spaced slide rods. The mounting box has an accommodating space inside, and guide grooves are provided on both sides of the accommodating space. The two slide rods are slidably installed in the two guide grooves respectively. The inner end of one slide rod is vertically fixedly connected to a crossbar. An elastic energy dissipation component is provided between the crossbar and the inner end of the accommodating space.

[0011] Furthermore, the elastic energy dissipation component includes a spring and a second crossbar arranged parallel to the first crossbar. Both ends of the second crossbar are vertically fixedly connected to a second sliding rod. The two second sliding rods are slidably installed in two guide grooves respectively. The spring is fixedly connected between the first crossbar and the second crossbar.

[0012] Furthermore, a sliding rod fixedly connected to the crossbar has multiple meshing teeth integrally provided on its side, and another sliding rod has a sleeve groove. An extension rod is slidably installed in the sleeve groove. The free end of the extension rod is integrally fixedly connected to one of the sliding rods. A multiple meshing teeth are integrally provided on the side of the extension rod. A gear is rotatably installed in the accommodating space. The gear meshes with the meshing teeth and the meshing teeth respectively.

[0013] Furthermore, a guide rod is vertically fixedly connected to the side of the crossbar one near the crossbar two, and a guide rod is vertically fixedly connected to the side of the crossbar two near the crossbar one. The guide rod one and the guide rod two are coaxially arranged opposite each other, and the spring is movably sleeved on the outside of the guide rod one and the guide rod two.

[0014] Furthermore, a second pressure sensor is provided on the side of the flexible top block near the mounting frame, and the second pressure sensor is electrically connected to the control module.

[0015] Furthermore, each of the adaptive clamping plates is provided with an anti-slip corrugated rubber pad on its clamping surface.

[0016] Furthermore, the telescopic cylinder is a pneumatic cylinder or a hydraulic cylinder, and the telescopic cylinder is electrically connected to the control module.

[0017] Compared with the prior art, the present invention has the following features and beneficial effects: 1. This invention, by setting up an electric slide rail, an electric slider, a displacement sensor, and a control module, can automatically adjust the spacing between two sets of adaptive clamping devices according to the position of the pipe weld, achieving precise alignment and clamping of pipes of different lengths and different weld positions. At the same time, multiple telescopic cylinders and adaptive clamping plates are evenly arranged circumferentially on the clamping clamp, and pressure sensors are installed on the adaptive clamping plates. The control module independently controls the extension and retraction of each telescopic cylinder according to the feedback signal of each pressure sensor, so that each adaptive clamping plate fits the outer wall of the pipe with a uniform clamping force. This not only achieves adaptive clamping of pipes of different diameters, but also avoids local deformation or surface damage of the pipe caused by uneven clamping force.

[0018] 2. This invention incorporates an elastic limiting device between the stop plate and the mounting bracket. This device absorbs the axial impact force and vibration energy generated during welding through an elastic energy-absorbing mechanism, effectively reducing the adverse effects of impact vibration on weld repair accuracy. Simultaneously, the U-shaped top rod and flexible top block enable flexible limiting, preventing rigid collisions. The elastic energy-absorbing mechanism employs a gear and double rack meshing transmission structure, allowing crossbar one and crossbar two to slide synchronously in opposite directions. Combined with the elastic buffering effect of the spring, this achieves balanced absorption and dispersion of bidirectional impact forces, significantly improving the device's impact resistance and stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the operation of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a side view of the present invention; Figure 4 This is a connection block diagram of the present invention; Figure 5 This is a top view of the elastic limiting device of the present invention; Figure 6 This is a three-dimensional structural schematic diagram of the elastic limiting device of the present invention from a first perspective; Figure 7 yes Figure 6 A magnified schematic diagram of the structure at point A; Figure 8 This is a three-dimensional structural schematic diagram of the elastic limiting device of the present invention from a second perspective.

[0020] The attached diagrams are labeled as follows: 100, repair pipe; 200, control module; 300, displacement sensor; 400, pressure sensor one; 500, pressure sensor two; 1, mounting base plate; 101, electric slide rail; 102, electric slider; 103, stop plate; 2, adaptive clamping device; 201, mounting bracket; 202, lower mounting clamp; 2021, reinforcing rib; 203, upper mounting clamp; 204, telescopic cylinder; 2 5. Adaptive clamping plate; 3. Elastic limiting device; 301. U-shaped top rod; 302. Flexible top block; 303. Mounting box; 3031. Guide slide groove; 4. Slide rod one; 401. Crossbar one; 402. Engaging tooth one; 403. Guide rod one; 404. Sleeve slide groove; 5. Crossbar two; 501. Guide rod two; 502. Slide rod two; 5021. Extension rod; 5022. Engaging tooth two; 6. Gear; 7. Spring. Detailed Implementation

[0021] The present invention will now be described in more detail with reference to the embodiments.

[0022] Example 1 Please see Figures 1 to 4 The multi-directional adaptive stop device for repairing large-diameter pipe welds in this embodiment includes a mounting base plate 1. An electric slide rail 101 is fixedly installed on the top of the mounting base plate 1. In this embodiment, two electric slide rails 101 are provided, and the two electric slide rails 101 are arranged parallel to each other.

[0023] Two sets of electric sliders 102 are slidably mounted on the electric slide rail 101. In this embodiment, each set of electric sliders 102 includes two sliders, which are slidably mounted on the two electric slide rails 101 respectively.

[0024] Each set of electric sliders 102 is fixedly equipped with an adaptive clamping device 2, so that the distance between the two sets of adaptive clamping devices 2 can be adjusted along the electric slide rail 101.

[0025] Specifically, the adaptive clamping device 2 includes a mounting frame 201, a clamping clamp is mounted on the top of the mounting frame 201, and multiple telescopic cylinders 204 are evenly arranged around the outer ring of the clamping clamp. After the telescopic shaft of the telescopic cylinder 204 slides through the side wall of the clamping clamp, it is fixedly connected to an adaptive clamping plate 205. Each adaptive clamping plate 205 is equipped with a pressure sensor 400 on the side facing the repair pipe 100.

[0026] In this embodiment, five telescopic cylinders 204 are provided, and the five telescopic cylinders 204 are equally spaced.

[0027] A displacement sensor 300 is installed on the electric slide rail 101 to detect the displacement of the electric slider 102.

[0028] Please see Figure 4 The device also includes a control module 200, a pressure sensor 400 and a displacement sensor 300, all of which are electrically connected to the control module 200, and the telescopic cylinder 204 is also electrically connected to the control module 200.

[0029] Specifically, the telescopic cylinder 204 is preferably a hydraulic cylinder to provide a more stable and controllable clamping force. In applications requiring rapid response, the telescopic cylinder 204 can also be a pneumatic cylinder.

[0030] The control solenoid valve of the telescopic cylinder 204 is electrically connected to the control module 200, which can be a programmable logic controller (PLC) or an embedded microcontroller.

[0031] In actual use, the operator first sets the target position of the electric slider 102 according to the length of the pipe to be repaired 100 and the position of the weld through the control module 200. The displacement sensor 300 provides real-time feedback on the actual position of the electric slider 102. The control module 200 drives the electric slider 102 to slide along the electric slide rail 101, so that the two sets of adaptive clamping devices 2 are respectively located at appropriate positions on both sides of the weld.

[0032] Subsequently, the control module 200 activates each telescopic cylinder 204, pushing each adaptive clamping plate 205 to move towards the outer wall of the repair pipe 100. When the adaptive clamping plate 205 contacts the outer wall of the pipe, the pressure sensor 400 detects the contact pressure in real time and feeds it back to the control module 200. The control module 200 independently adjusts the extension and retraction of each telescopic cylinder 204 according to the preset clamping force threshold until the readings of all pressure sensors 400 reach the set range, so that each adaptive clamping plate 205 fits the outer wall of the pipe with uniform force, realizing adaptive clamping of pipes of different diameters.

[0033] Furthermore, the clamping clamp includes a lower mounting clamp 202 and an upper mounting clamp 203.

[0034] Specifically, please refer to Figure 2 and Figure 3 The lower mounting clamp 202 is fixedly installed on the top of the mounting bracket 201, and the upper mounting clamp 203 is detachably installed on the top of the lower mounting clamp 202 by bolts. This split structure makes it easy to put the repair pipe 100 into the clamping clamp, and is especially suitable for large-diameter pipes that have been installed on site.

[0035] Furthermore, each adaptive clamping plate 205 is provided with an anti-slip corrugated rubber pad (not shown in the figure) on its clamping surface.

[0036] The corrugated rubber pad can significantly increase the friction between the adaptive clamp 205 and the outer wall of the repair pipe 100, preventing the pipe from rotating circumferentially or slipping axially during welding, while also preventing the rigid clamp from directly contacting the pipe surface and causing scratches.

[0037] Example 2 Please see Figures 5 to 8 The multi-directional adaptive stop device for large-diameter pipe weld repair in this embodiment is based on the above embodiment one. Both ends of the mounting base plate 1 are vertically installed with stop plates 103, and an elastic limiting device 3 is provided between the stop plates 103 and the mounting frame 201.

[0038] Specifically, the elastic limiting device 3 includes a mounting box 303, and an elastic energy-absorbing mechanism is provided inside the mounting box 303.

[0039] A U-shaped top rod 301 is fixedly connected to the outer end of the elastic energy absorption mechanism. A flexible top block 302 is fixedly connected to one end of the U-shaped top rod 301 near the mounting frame 201. The flexible top block 302 is fitted to the mounting frame 201. In this embodiment, a pressure sensor 500 is also provided on the side of the flexible top block 302 near the mounting frame 201. The pressure sensor 500 is electrically connected to the control module 200.

[0040] As can be seen from the above description, when an axial impact force is generated during the welding process, the mounting bracket 201 will be displaced along the electric slide rail 101, squeezing the flexible top block 302 and the U-shaped top rod 301, thereby compressing the elastic energy absorption mechanism. The elastic energy absorption mechanism absorbs the impact energy, effectively reducing the impact of axial vibration on the accuracy of weld repair.

[0041] Meanwhile, pressure sensor 2500 monitors the pressure between flexible top block 302 and mounting bracket 201 in real time. Control module 200 can determine the impact intensity based on the pressure signal and issue an alarm or adjust control parameters when necessary.

[0042] Further, please refer to Figures 5 to 8 The elastic energy absorption mechanism includes two parallel and spaced slide rods 4. The mounting box 303 has an internal accommodating space. Guide grooves 3031 are provided on both sides of the accommodating space. The two slide rods 4 are slidably installed in the two guide grooves 3031 respectively. The inner end of one of the slide rods 4 is vertically fixedly connected to a crossbar 401. An elastic energy dissipation component is provided between the crossbar 401 and the inner end of the accommodating space.

[0043] Specifically, the elastic energy dissipation component includes a spring 7 and a second crossbar 5 arranged parallel to the first crossbar 401. Both ends of the second crossbar 5 are vertically fixedly connected to a second slide bar 502. The two slide bars 502 are slidably installed in two guide grooves 3031 respectively. The spring 7 is fixedly connected between the first crossbar 401 and the second crossbar 5.

[0044] A guide rod 403 is vertically fixed to the side of crossbar 1 401 near crossbar 2 5, and a guide rod 2 501 is vertically fixed to the side of crossbar 2 5 near crossbar 1 401. The guide rod 1 403 and the guide rod 2 501 are coaxial and arranged opposite each other. The spring 7 is movably sleeved on the outside of the guide rod 1 403 and the guide rod 2 501 to prevent the spring 7 from bending laterally during compression.

[0045] In order to achieve balanced absorption of bidirectional impact force, the slide bar 4, which is fixedly connected to the crossbar 401, is integrally provided with multiple meshing teeth 402 on its side. Another slide bar 4 is provided with a sleeve groove 404, and an extension rod 5021 is slidably installed in the sleeve groove 404. The free end of the extension rod 5021 is integrally fixedly connected to one of the slide bars 502. The side of the extension rod 5021 is integrally provided with multiple meshing teeth 5022.

[0046] Meanwhile, a gear 6 is also rotatably installed in the accommodating space, and the gear 6 meshes with meshing tooth 402 and meshing tooth 5022 respectively.

[0047] As can be seen from the above description, when the impact force on one side pushes the crossbar 401 to move inward, the gear 6 is driven to rotate through the meshing tooth 402. The gear 6 then drives the extension rod 5021 and the slide rod 502 fixedly connected to it to slide outward through the meshing tooth 5022, thereby compressing the spring 7. In this way, the unilateral impact force can be converted into bidirectional compression of the spring 7, realizing the efficient absorption and dispersion of axial impact force.

[0048] The working principle of this invention is as follows: First, the section of the pipe to be repaired 100 is placed on the lower mounting clamps 202 of the two sets of adaptive clamping devices 2, and the mounting clamps 203 are installed. At the same time, the mounting base plate 1 is fixed. The outer diameter parameters and weld position of the pipe to be repaired are input through the control module 200. The control module 200 drives the electric slider 102 to move to the predetermined position according to the feedback signal of the displacement sensor 300.

[0049] Then, the control module 200 starts all the telescopic cylinders 204. Each adaptive clamp 205 moves towards the outer wall of the pipe under the drive of the telescopic cylinders 204. When the pressure sensor 400 detects that the contact pressure reaches the preset lower limit, the corresponding telescopic cylinder 204 slows down its extension speed. When the pressure reaches the preset upper limit, the telescopic cylinder 204 stops extending and maintains the position. After all the telescopic cylinders 204 have been adjusted independently, each adaptive clamp 205 firmly clamps the repair pipe 100 with uniform circumferential pressure.

[0050] During welding repair, if the pipeline experiences axial impact due to thermal deformation or external disturbance, the mounting bracket 201 will move along the electric slide rail 101. This movement is transmitted to the elastic limiting device 3 through the flexible top block 302. The spring 7 in the elastic energy absorption mechanism is compressed to absorb the impact energy. The gear 6, meshing tooth 402, and meshing tooth 5022 make the elastic energy absorption mechanisms on both sides move synchronously to achieve bidirectional buffering. At the same time, the pressure sensor 500 monitors the impact pressure in real time, and the control module 200 can determine whether process adjustments or shutdown inspections are needed based on this data.

[0051] After the repair is completed, the control module 200 controls the telescopic cylinder 204 to retract, releases the adaptive clamp 205, and removes the upper mounting clamp 203 to take out the repaired pipe 100.

[0052] In the description of this invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines, characterized in that: The system includes a mounting base plate (1), on which an electric slide rail (101) is mounted. Two sets of electric sliders (102) are slidably mounted on the electric slide rail (101). Each set of electric sliders (102) is fixedly mounted with an adaptive clamping device (2). The adaptive clamping device (2) includes a mounting frame (201), on which a clamping clamp is mounted. Multiple telescopic cylinders (204) are evenly arranged around the outer ring of the clamping clamp. The telescopic shaft of the telescopic cylinder (204) slides through the clamping clamp and is fixedly connected to an adaptive clamping plate (205). The system also includes a control module (200). Each of the adaptive clamps (205) has a pressure sensor (400) installed on the side closest to the repair pipe (100). The electric slide rail (101) has a displacement sensor (300) installed to detect the displacement of the electric slider (102). Both the pressure sensor (400) and the displacement sensor (300) are electrically connected to the control module (200).

2. The multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 1, characterized in that: The clamping clamp includes a lower mounting clamp (202) and an upper mounting clamp (203). The lower mounting clamp (202) is fixedly installed on the top of the mounting frame (201), and the upper mounting clamp (203) is detachably installed on the top of the lower mounting clamp (202).

3. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 1, characterized in that: Both ends of the mounting base plate (1) are vertically mounted with stop plates (103). An elastic limiting device (3) is provided between the stop plates (103) and the mounting frame (201). The elastic limiting device (3) includes a mounting box (303). An elastic energy-absorbing mechanism is provided inside the mounting box (303). A U-shaped top rod (301) is fixedly connected to the outer end of the elastic energy-absorbing mechanism. A flexible top block (302) is fixedly connected to one end of the U-shaped top rod (301) near the mounting frame (201). The flexible top block (302) is set to fit against the mounting frame (201).

4. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 3, characterized in that: The elastic energy absorption mechanism includes two parallel and spaced slide rods (4). The mounting box (303) has an internal accommodating space. Guide grooves (3031) are provided on both sides of the accommodating space. The two slide rods (4) are slidably installed in the two guide grooves (3031). A crossbar (401) is vertically fixed to the inner end of one of the slide rods (4). An elastic energy dissipation component is provided between the crossbar (401) and the inner end of the accommodating space.

5. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 4, characterized in that: The elastic energy dissipation component includes a spring (7) and a crossbar (5) set with a parallel crossbar (401). Both ends of the crossbar (5) are vertically fixedly connected to a slide bar (502). The two slide bars (502) are slidably installed in two guide grooves (3031). The spring (7) is fixedly connected between the crossbar (401) and the crossbar (5).

6. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 5, characterized in that: A sliding rod (4) fixedly connected to a crossbar (401) has multiple meshing teeth (402) integrally provided on its side. Another sliding rod (4) has a sleeve groove (404) provided on its side. An extension rod (5021) is slidably installed in the sleeve groove (404). The free end of the extension rod (5021) is integrally fixedly connected to one of the sliding rods (502). A multiple meshing teeth (5022) are integrally provided on the side of the extension rod (5021). A gear (6) is rotatably installed in the accommodating space. The gear (6) meshes with the meshing teeth (402) and the meshing teeth (5022) respectively.

7. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 5, characterized in that: A guide rod (403) is vertically fixed to the side of the crossbar 1 (401) near the crossbar 2 (5), and a guide rod 2 (501) is vertically fixed to the side of the crossbar 2 (5) near the crossbar 1 (401). The guide rod 1 (403) and the guide rod 2 (501) are coaxially opposite each other, and the spring (7) is movably sleeved outside the guide rod 1 (403) and the guide rod 2 (501).

8. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 3, characterized in that: A pressure sensor 2 (500) is provided on the side of the flexible top block (302) near the mounting bracket (201), and the pressure sensor 2 (500) is electrically connected to the control module (200).

9. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 1, characterized in that: Each of the adaptive clamping plates (205) is provided with an anti-slip corrugated rubber pad on its clamping surface.

10. A multi-directional adaptive stop device for repairing weld seams in large-diameter pipelines according to claim 1, characterized in that: The telescopic cylinder (204) is a pneumatic cylinder or a hydraulic cylinder, and the telescopic cylinder (204) is electrically connected to the control module (200).

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