A large pipeline butt flange correction tool

Abstract

The utility model discloses a large -scale pipeline butt flange correction tool relates to large -scale pipeline dismounting technical field, include: fixed establishment and push mechanism, and fixed establishment includes mainboard, a plurality of first connecting plate and a plurality of pin rod axle, and one end of pin rod axle is connected with the one end of first connecting plate away from mainboard, and the other end inserts the bolt hole of fixed side flange, and push mechanism includes a plurality of cylindrical connecting pieces, a plurality of first nuts, leads to screw and push block, and first threaded section passes through second through -hole and is connected with first nut thread, and first cylindrical section is provided with the first threaded hole perpendicular to the axis of connection bolt, and leads to screw is connected in first threaded hole, and the one end of leads to screw is drive end, and the other end is rotatably connected with push block, and the side away from leads to screw of push block is provided with V -shaped mouth, and V -shaped mouth abuts the outer periphery of the flange of the side of adjustment, simple structure, convenient to use, effectively reduce the labor intensity, effectively improve the operation efficiency, effectively guarantee the operation safety.

Description

Technical Field

[0001] This utility model relates to the field of large pipeline disassembly and assembly technology, and in particular to a large pipeline flange straightening tool. Background Technology

[0002] Currently, in steel enterprises, large-diameter pipelines transport various media. When pipelines age and corrode, or when equipment maintenance requires frequent disassembly or gasket replacement, the pipeline is prone to misalignment due to internal stress, pipe deformation, and gravity after the flange bolts are disconnected.

[0003] Pipe connections require precise alignment of mating flanges before gaskets and bolts can be inserted. Misalignment of mating flanges can cause gasket and pipe fluid leakage, leading to environmental pollution and safety hazards.

[0004] Existing technologies generally rely on multiple people using pry bars to insert into the mating flanges or using chain hoists to pull and correct the center hole at multiple points. This method has many drawbacks: the labor intensity of workers is high and the efficiency is low. At the same time, pipeline operations are mostly at heights, which makes it easy to fall and cause high safety risks, which does not meet the needs of modern industrial safety development. Utility Model Content

[0005] The purpose of this utility model is to provide a large-scale pipe flange straightening tool to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively reduces labor intensity, effectively improves work efficiency, and effectively ensures work safety.

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

[0007] This utility model provides a large pipe flange straightening tool, including: a fixing mechanism and a pushing mechanism. The fixing mechanism includes a main board, multiple first connecting plates, and multiple pin shafts. The upper part of the main board has multiple first through holes, and the lower part has multiple second through holes. One end of the first connecting plate is bolted to the first through hole. One end of the pin shaft is used to connect to the end of the first connecting plate away from the main board, and the other end is used to insert into the bolt hole of the fixed side flange. The pushing mechanism includes multiple cylindrical connectors, multiple first nuts, a lead screw, and a pushing block. The cylindrical connector includes an integrally connected first threaded section and a first cylindrical section. The first threaded section is used to pass through the second through hole and be threadedly connected to the first nut. The first cylindrical section has a first threaded hole perpendicular to the axis of the connecting bolt. The lead screw is threaded to the first threaded hole. One end of the lead screw is a driving end, and the other end is rotatably connected to the pushing block. The side of the pushing block away from the lead screw is provided with a V-shaped opening, which is used to abut against the outer periphery of the receiving side flange.

[0008] Preferably, the fixing mechanism further includes multiple second connecting plates, multiple screws, and multiple second nuts. The bottom of the first connecting plate is provided with multiple third through holes. One end of the screw is vertically fixedly connected to the bottom end of the second connecting plate, and the other end passes through the first through hole and the third through hole and is threadedly connected to the second nut.

[0009] Preferably, the pin shaft includes a second threaded section, a second cylindrical section, and a limiting plate. The second threaded section and the limiting plate are integrally connected to both ends of the second cylindrical section. The top end of the second connecting plate is provided with a second threaded hole, and the top end of the first connecting plate is provided with a fourth through hole. The second threaded section passes through the fourth through hole and the bolt hole of the fixed side flange and is threadedly connected to the second threaded hole. The limiting plate is used to abut against the side of the first connecting plate away from the flange to be fixed.

[0010] Preferably, the pin shaft further includes a U-shaped ring, which is disposed on the side of the limiting plate away from the second cylindrical section for connection with the safety rope.

[0011] Preferably, it also includes a plurality of spacer sleeves, which are used to fit onto the second cylindrical section to fit the bolt holes of the fixed side flange.

[0012] Preferably, the drive end of the lead screw is integrally connected with a nut.

[0013] Preferably, the screw also includes a connecting bolt, and the lead screw further includes a pin and a stud. A fifth through hole is provided in the middle of the push block. A countersunk hole is provided at the end of the fifth through hole near the V-shaped opening. The junction of the countersunk hole and the fifth through hole is a limiting platform. The pin is integrally connected to the end of the lead screw away from the driving end. The stud is integrally connected to the end of the pin away from the lead screw. A third threaded hole is provided at the end of the stud away from the pin. The pin is inserted into the fifth through hole. The connecting bolt passes through the countersunk hole and connects with the threaded hole of the third threaded hole to make the lead screw and the push block rotatably connected.

[0014] Preferably, the fifth through hole includes a first inner hole and a second inner hole that are connected. The diameter of the first inner hole is smaller than the diameter of the second inner hole. The first inner hole is connected to the countersunk hole. The second inner hole is located on the side of the first inner hole away from the countersunk hole. The diameter of the stud is larger than the diameter of the first inner hole and can extend into the second inner hole. The stud is used to extend into the first inner hole.

[0015] Preferably, the device further includes a plurality of first washers and a plurality of second washers, wherein the first washers are disposed between the second nut and the first connecting plate, and the second washers are disposed between the first nut and the main board.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] This utility model provides a large-scale pipe flange straightening tool. The fixing mechanism can quickly connect to the main board and is connected to the flange to be fixed via a pin shaft, providing a stable foundation support for the entire straightening tool. This ensures structural stability during subsequent straightening operations and improves the reliability of the equipment during use. Rotating the lead screw drives the jacking block to move in a specific direction. The V-shaped opening engages with the outer periphery of the flange to be adjusted, accommodating flanges of different diameters and providing stable support and accurate adjustment force during the jacking process. This effectively improves the accuracy of flange position adjustment, ensuring precise alignment of both flanges. The tool has a simple structure, is easy to use, effectively reduces labor intensity, improves work efficiency, and ensures operational safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of the large pipe flange straightening tool provided by this utility model;

[0020] Figure 2 This is a schematic diagram of the back of the large pipe flange straightening tool provided by this utility model;

[0021] Figure 3 This is a partial schematic diagram of the large pipe flange straightening tool provided by this utility model;

[0022] Figure 4 This is a front view of the large pipe flange straightening tool provided by this utility model.

[0023] Figure 5 This is a schematic diagram of the back of the large pipe flange straightening tool provided by this utility model;

[0024] In the diagram: 1. Fixing mechanism; 100. Main board; 101. Second through hole; 102. First through hole; 2. Pushing mechanism; 200. Cylindrical connector; 201. First threaded hole; 202. First threaded section; 3. Lead screw; 301. Nut; 302. Pin; 303. Stud; 304. Third threaded hole; 4. Pushing block; 401. Fifth through hole; 402. V-shaped opening; 403. Limiting platform; 404 1. Countersunk hole; 5. Connecting bolt; 6. Second connecting plate; 601. Second threaded hole; 602. Screw; 7. Spacer sleeve; 8. First connecting plate; 801. Fourth through hole; 802. Third through hole; 9. Pin shaft; 901. Second threaded section; 902. U-ring; 10. Second nut; 11. First washer; 12. First nut; 13. Second washer; 14. Fixed side flange; 15. Flange to be adjusted. Detailed Implementation

[0025] 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.

[0026] The purpose of this utility model is to provide a large-scale pipe flange straightening tool to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively reduces labor intensity, effectively improves work efficiency, and effectively ensures work safety.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] This embodiment provides a large pipe flange straightening tool, such as... Figures 1-5As shown, it includes: a fixing mechanism 1 and a pushing mechanism 2. The fixing mechanism 1 includes a main board 100, multiple first connecting plates 8 and multiple pin shafts 9. The upper part of the main board 100 is provided with multiple first through holes 102 and the lower part is provided with multiple second through holes 101. One end of the first connecting plate 8 is installed in the first through hole 102 by bolts. One end of the pin shaft 9 is used to connect with the end of the first connecting plate 8 away from the main board 100, and the other end is used to insert into the bolt hole of the fixing side flange 14. The pushing mechanism 2 includes multiple cylindrical connectors 200, multiple first nuts 12, and a lead screw. The cylindrical connector 200, consisting of a first threaded section 202 and a first cylindrical section integrally connected by a push block 4 and a push block 4, provides a first threaded hole 201 perpendicular to the axis of the connecting bolt 5. A lead screw 3 is threaded into the first threaded hole 201, with one end serving as the drive end and the other end rotatably connected to the push block 4. A V-shaped opening 402 is provided on the side of the push block 4 away from the lead screw 3, abutting against the outer periphery of the receiving-adjustment flange 15. The fixing mechanism 1 can quickly connect to the main board 100 and is connected to the flange 14 to be fixed via a pin shaft 9, providing a stable foundation support for the entire straightening tool, ensuring structural stability during subsequent straightening operations, and improving the reliability of the equipment during use. When the lead screw 3 is rotated, it can drive the push block 4 to move along a specific direction. The V-shaped opening and the outer periphery of the flange 15 to be adjusted can not only adapt to flanges of different diameters, but also provide stable support and accurate adjustment force during the push process, effectively improving the accuracy of flange position adjustment and ensuring that the flanges on both sides can be accurately aligned.

[0030] In a preferred embodiment, the fixing mechanism 1 further includes multiple second connecting plates 6, multiple screws 602, and multiple second nuts 10. The bottom of the first connecting plate 8 is provided with multiple third through holes 802. One end of each screw 602 is vertically fixed to the bottom end of the second connecting plate 6, and the other end passes through the first through hole 102 and the third through hole 802 before being threadedly connected to the second nut 10. This further enhances the stability and reliability of the connections between the components of the fixing mechanism 1. The cooperation of the second connecting plates 6, screws 602, and second nuts 10 makes the connection between the first connecting plate 8 and the main plate 100 tighter, better able to withstand various forces generated during flange straightening, reducing the risk of component loosening and improving the overall service life of the tool.

[0031] In a preferred embodiment, the pin shaft 9 includes a second threaded section 901, a second cylindrical section, and a limiting plate. The second threaded section 901 and the limiting plate are integrally connected to both ends of the second cylindrical section. The top end of the second connecting plate 6 is provided with a second threaded hole 601, and the top end of the first connecting plate 8 is provided with a fourth through hole 801. The second threaded section 901 passes through the fourth through hole 801 and the bolt hole of the fixing side flange 14, and is then threadedly connected to the second threaded hole 601. The limiting plate is used to abut against the side of the first connecting plate 8 away from the side flange 14 to be fixed. This design forms a tight and stable connection structure between the pin shaft 9, the first connecting plate 8, and the side flange 14 to be fixed. The limiting plate abuts against the first connecting plate 8 to prevent the pin shaft 9 from shifting or loosening during use, ensuring the accuracy and reliability of the tool when fixing the flange, making the entire fixing operation more stable and secure.

[0032] In a preferred embodiment, the pin shaft 9 further includes a U-shaped ring 902, which is disposed on the side of the limiting plate away from the second cylindrical section for connection with the safety rope. The U-shaped ring greatly improves the safety of the tool when working at heights. By connecting with the safety rope, it is possible to effectively prevent the tool from accidentally falling from a height, avoiding damage to personnel and equipment below, meeting the requirements of modern industrial safety development, and reducing safety risks during construction.

[0033] In a preferred embodiment, the tool further includes multiple spacer sleeves 7. These spacer sleeves 7 are fitted onto the second cylindrical section to accommodate the bolt holes of the fixed-side flange 14. The design of the spacer sleeves 7 enhances the tool's versatility for different sizes of flanges 14 to be fixed. By selecting appropriate spacer sleeves 7 to fit onto the second cylindrical section, the pin shaft 9 can be adapted to flange bolt holes of various diameters and spacings, improving the tool's applicability in different scenarios, expanding its application range, and meeting diverse needs.

[0034] In a preferred embodiment, the drive end of the lead screw 3 is integrally connected to a nut 301. The nut 301 facilitates the operator's rotation of the lead screw 3. During adjustment, the operator can more easily use tools such as a wrench to rotate the nut 301 and thus rotate the lead screw 3, causing the push block 4 to move as required. This improves the convenience and efficiency of the operation, making the adjustment process smoother and more precise.

[0035] In a preferred embodiment, the screw 3 further includes a connecting bolt 5, a lead screw 3 including a pin head 302 and a stud 303, a fifth through hole 401 in the middle of the push block 4, a countersunk hole 404 at the end of the fifth through hole 401 near the V-shaped opening 402, and a limiting platform 403 at the junction of the countersunk hole 404 and the fifth through hole 401. The pin head 302 is integrally connected to the end of the lead screw away from the driving end, and the stud 303 is integrally connected to the end of the pin head 302 away from the lead screw. One end is provided with a third threaded hole 304, and the pin head 302 is inserted into the fifth through hole 401. The connecting bolt 5 passes through the countersunk hole 404 and connects with the threaded hole of the third threaded hole 304 to make the lead screw and the push block 4 rotatably connected. This structure ensures that the lead screw 3 and the push block 4 can achieve a stable and smooth rotational connection. When the lead screw 3 is rotated, it can accurately drive the push block 4 to move, providing a reliable mechanical connection guarantee for the precise adjustment of the flange position, and ensuring the transmission accuracy and stability of the straightening tool during use.

[0036] In a preferred embodiment, the fifth through hole 401 includes a first inner hole and a second inner hole that communicate with each other. The diameter of the first inner hole is smaller than the diameter of the second inner hole. The first inner hole communicates with the countersunk hole 404. The second inner hole is located on the side of the first inner hole away from the countersunk hole 404. The diameter of the stud 303 is larger than the diameter of the first inner hole and can extend into the second inner hole. The stud 303 is used to extend into the first inner hole. This special hole structure design of the fifth through hole 401, in conjunction with the size of the stud 303, can play a limiting and guiding role, further improving the stability and transmission accuracy of the connection between the lead screw 3 and the push block 4. During the process of the lead screw 3 driving the push block 4 to move, it ensures that the push block 4 moves in the correct direction, preventing deviation or shaking, thereby improving the accuracy of flange straightening.

[0037] In a preferred embodiment, the system further includes multiple first washers 11 and multiple second washers 13. The first washers 11 are disposed between the second nut 10 and the first connecting plate 8, and the second washers 13 are disposed between the first nut 12 and the main plate 100. The placement of the first washers 11 and the second washers 13 effectively reduces friction and wear between the nut and the connecting plate / main plate 100, while also providing a buffering effect between the components. This not only helps to improve the service life of each component but also improves the tightness and stability of the connection to a certain extent, further ensuring the reliability and performance of the straightening tool during use.

[0038] In a preferred embodiment, the main board 100 is a trapezoidal main board 100. Two first through holes 102 are provided on both sides of the top end of the trapezoidal main board 100, and two second through holes 101 are provided on both sides of the bottom end. The trapezoidal shape of the main board 100 helps optimize the overall structural layout of the tool, making it more spatially efficient. The through holes located at specific positions on the top and bottom facilitate connection with other components, better withstand and transmit stress and force during the correction process, improve the structural strength and stability of the main board 100, and thus enhance the performance and reliability of the entire correction tool.

[0039] Example 2

[0040] This embodiment also provides a method for using the large pipe flange straightening tool as described in any of the above embodiments, including the following steps:

[0041] Tool preparation stage: Select a spacer sleeve 7 with an appropriate diameter based on the actual condition of the pipe flange to be corrected. Different pipe flanges may have different bolt hole diameters and spacings, so it is necessary to select a spacer sleeve 7 that can match the bolt holes of the flange 14 to be fixed, and fit it on the second cylindrical section of the pin shaft 9.

[0042] Installation steps of fixing mechanism 1

[0043] Connecting the motherboard 100 to the first connecting plate 8: Install one end of the first connecting plate 8 onto the first through hole 102 on the upper part of the motherboard 100 with a bolt to achieve a preliminary connection.

[0044] Connecting components such as the second connecting plate 6: One end of the screw 602 is vertically fixed to the bottom end of the second connecting plate 6. Then, the other end of the screw 602 passes through the first through hole 102 and the third through hole 802 at the bottom of the first connecting plate 8. A second nut 10 is then used for threaded connection, and a first washer 11 is installed between the second nut 10 and the first connecting plate 8. This installation method ensures a tight and stable connection between the components.

[0045] Installation of pin shaft 9: Pass the second threaded section 901 of pin shaft 9 sequentially through the fourth through hole 801 at the top of the first connecting plate 8, the bolt hole of the fixing flange 14, and finally thread it into the second threaded hole 601 at the top of the second connecting plate 6. At this time, the limiting plate will press against the side of the first connecting plate 8 away from the flange 14 to be fixed, ensuring a stable connection. Also, install a U-shaped ring on the side of the limiting plate away from the second cylindrical section and connect a safety rope (if working at height).

[0046] Installation stage of jacking mechanism 2

[0047] Install the cylindrical connector 200 and the lead screw 3: Pass the first threaded section 202 of the cylindrical connector 200 through the second through hole 101 at the bottom of the main board 100, and then thread it with the first nut 12. Install the second washer 13 between the first nut 12 and the main board 100. At the same time, thread the lead screw 3 into the first threaded hole 201 perpendicular to the axis of the first cylindrical section of the cylindrical connector 200.

[0048] Connecting the lead screw 3 and the push block 4: Insert the pin 302 on the side of the lead screw 3 away from the drive end into the fifth through hole 401 in the middle of the push block 4, let the connecting bolt 5 pass through the countersunk hole 404 near the V-shaped opening end of the fifth through hole 401, and make a threaded connection with the third threaded hole 304 on the stud 303, so that the lead screw 3 and the push block 4 can be rotated.

[0049] Flange straightening operation

[0050] Determine the tool position: Select the position with the largest eccentricity of the pipe flange as the operating point, and fix the fixing mechanism 1 on one side of the flange to be fixed.

[0051] Align the push block 4 with the flange 15 to be adjusted: By rotating the nut 301 at the drive end of the lead screw 3, the lead screw 3 is rotated, thereby moving the push block 4. The V-shaped opening on the push block 4 is then accurately aligned with the outer periphery of the flange to be adjusted on the other side.

[0052] Adjusting the flange position: Repeatedly rotate the adjusting screw 3 of the nut 301 to push the push block 4 to move, thereby making a small adjustment to the flange position until the center of the flanges on both sides is aligned, so as to achieve precise flange connection.

[0053] By following the above steps, this large pipe flange straightening tool can be used efficiently and accurately to complete the straightening of large pipe flanges, improve pipe installation quality and work efficiency, and ensure construction safety.

[0054] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A large pipe flange straightening tool, characterized in that: include: The fixing mechanism includes a main board, multiple first connecting plates and multiple pin shafts. The upper part of the main board is provided with multiple first through holes and the lower part is provided with multiple second through holes. One end of the first connecting plate is installed in the first through hole by bolts. One end of the pin shaft is used to connect with the end of the first connecting plate away from the main board, and the other end is used to insert into the bolt hole of the fixing side flange. The jacking mechanism includes multiple cylindrical connectors, multiple first nuts, a lead screw, and a jacking block. Each cylindrical connector includes an integrally connected first threaded section and a first cylindrical section. The first threaded section is used to pass through a second through hole and be threadedly connected to the first nut. The first cylindrical section has a first threaded hole perpendicular to the axis of the connecting bolt. The lead screw is threadedly connected to the first threaded hole. One end of the lead screw is a driving end, and the other end is rotatably connected to the jacking block. The jacking block has a V-shaped opening on the side away from the lead screw, which is used to abut against the outer periphery of the receiving adjustment flange.

2. The large pipe flange straightening tool according to claim 1, characterized in that: The fixing mechanism also includes multiple second connecting plates, multiple screws and multiple second nuts. The bottom of the first connecting plate is provided with multiple third through holes. One end of the screw is vertically fixed to the bottom end of the second connecting plate, and the other end passes through the first through hole and the third through hole and is threadedly connected to the second nut.

3. The large pipe flange straightening tool according to claim 2, characterized in that: The pin shaft includes a second threaded section, a second cylindrical section, and a limiting plate. The second threaded section and the limiting plate are integrally connected to both ends of the second cylindrical section. The top end of the second connecting plate is provided with a second threaded hole, and the top end of the first connecting plate is provided with a fourth through hole. The second threaded section passes through the fourth through hole and the bolt hole of the fixed side flange and is threadedly connected to the second threaded hole. The limiting plate is used to abut against the side of the first connecting plate away from the flange to be fixed.

4. The large pipe flange straightening tool according to claim 3, characterized in that: The pin shaft also includes a U-shaped ring, which is disposed on the side of the limiting plate away from the second cylindrical section for connection with the safety rope.

5. The large pipe flange straightening tool according to claim 4, characterized in that: It also includes multiple spacer sleeves, which are used to fit onto the second cylindrical section to fit the bolt holes of the fixed side flange.

6. The large pipe flange straightening tool according to claim 5, characterized in that: The drive end of the lead screw is integrally connected with a nut.

7. The large pipe flange straightening tool according to claim 6, characterized in that: It also includes a connecting bolt, the lead screw also includes a pin and a stud, the middle of the push block is provided with a fifth through hole, the end of the fifth through hole near the V-shaped opening is provided with a countersunk hole, the junction of the countersunk hole and the fifth through hole is a limiting platform, the pin is integrally connected to the end of the lead screw away from the driving end, the stud is integrally connected to the end of the pin away from the lead screw, the end of the stud away from the pin is provided with a third threaded hole, the pin is inserted into the fifth through hole, and the connecting bolt passes through the countersunk hole and connects with the threaded hole of the third threaded hole to make the lead screw and the push block rotatably connected.

8. The large pipe flange straightening tool according to claim 7, characterized in that: The fifth through hole includes a first inner hole and a second inner hole that are connected. The diameter of the first inner hole is smaller than the diameter of the second inner hole. The first inner hole is connected to the countersunk hole. The second inner hole is located on the side of the first inner hole away from the countersunk hole. The diameter of the stud is larger than the diameter of the first inner hole and can extend into the second inner hole. The stud is used to extend into the first inner hole.

9. The large pipe flange straightening tool according to claim 8, characterized in that: It also includes a plurality of first washers and a plurality of second washers, wherein the first washers are disposed between the second nut and the first connecting plate, and the second washers are disposed between the first nut and the main board.

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