A fitting device for aligning pipe fittings and flanges.

Abstract

This utility model proposes a pipe fitting and flange mating device, belonging to the technical field of pipe fitting mating devices. It solves the problems of complex structural design, high operational difficulty, and low mating efficiency and quality of existing mating devices. It includes a supporting apex and a lifting screw, both positioned at the joint end of the mating pipe fitting. The supporting apex slides along the length of the lifting screw, with a portion of its two ends abutting against the inner wall of the joint end of the fitting, and the other portion extending to the outside of the joint end. The bottom end of the lifting screw abuts against the inner wall of the joint end of the fitting. It is mainly used for mating pipe fittings and flanges.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipe fitting alignment devices, and in particular relates to an alignment device for pipe fittings and flanges. Background Technology

[0002] In the petrochemical equipment manufacturing industry, pressure vessels are core equipment, and a large number of pipes or flanges need to be welded to their surfaces. The alignment accuracy of the pipes and flanges plays a crucial role in the welding quality and the safety of the entire equipment.

[0003] In the past, alignment operations relied mainly on manual adjustment or the use of simple clamps. Manual operation was not only inefficient, but also prone to inconsistent alignment accuracy due to human factors. Simple clamps, on the other hand, lacked stability in practical use and were ineffective against uneven pipe walls, easily becoming loose and affecting alignment accuracy.

[0004] Furthermore, misalignment can easily occur when flanges and pipe fittings are connected. Once misalignment occurs, repeated adjustments are required, which undoubtedly greatly prolongs operation time, reduces production efficiency, and increases manufacturing costs.

[0005] While some corresponding devices have emerged in the existing technology to address these issues, these devices generally have certain shortcomings. Some devices have overly complex structural designs, which not only increases the difficulty and cost of manufacturing but also causes considerable inconvenience during installation. Furthermore, these devices perform poorly in adapting to pipes of different diameters and fittings, making it difficult to meet diverse production needs.

[0006] Therefore, in order to improve the efficiency and quality of pipe fitting or flange alignment during the petrochemical equipment manufacturing process, reduce production costs, and ensure the safe and reliable operation of the equipment, there is an urgent need for an alignment device that is easy to operate, has precise positioning, and can adapt to pipe fittings of different diameters. Utility Model Content

[0007] In view of this, the present invention aims to propose a fitting device for pipe fittings and flanges, so as to solve the problems of complex structural design, high operation difficulty, and low fitting efficiency and quality of existing fitting devices.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a fitting and flange mating device, comprising a supporting apex and a lifting screw, wherein the supporting apex and the lifting screw are both disposed at the port of the mating end of the fitting, the supporting apex is slidably disposed on the lifting screw along the length direction of the lifting screw, a portion of the top edges of the two ends of the supporting apex abuts against the inner wall of the port of the fitting, and the other portion extends to the outside of the port of the fitting, and the bottom end of the lifting screw abuts against the inner wall of the port of the fitting.

[0009] Furthermore, the bottom of the supporting apex is slidably connected to the lifting screw, and both the upper and lower ends of the connection between the supporting apex and the lifting screw are provided with fixing nuts. The two fixing nuts respectively contact and cooperate with the upper and lower ends of the connection between the lifting screw, and the fixing nuts are screwed to the lifting screw.

[0010] Furthermore, the supporting apex is a V-shaped supporting apex, which includes a sliding connecting block and two supporting top plates. The two supporting top plates are inclined and symmetrically arranged on both sides of the top of the sliding connecting block. The lifting screw slides through the center of the sliding connecting block. The bottom ends of the two supporting top plates are connected to the sliding connecting block. A portion of the top edge of the two supporting top plates abuts against the inner wall of the connector port, and the other portion extends to the outside of the connector port.

[0011] Furthermore, the two fixing nuts are respectively located at the upper and lower ends of the sliding connecting block and screwed to the lifting screw.

[0012] Furthermore, the supporting apex is an inverted A-shaped supporting apex, which includes two supporting inclined apex plates and a connecting horizontal plate. The two supporting inclined apex plates are symmetrically arranged, and their bottom ends are connected. A portion of the top edge of the two supporting inclined apex plates abuts against the inner wall of the connecting pipe fitting port, while the other portion extends to the outside of the connecting pipe fitting port. The connecting horizontal plate is arranged between the two supporting inclined apex plates, and its two ends are respectively connected to the two supporting inclined apex plates. The lifting screw slides through the center of the two supporting inclined apex plates and the connecting horizontal plate.

[0013] Furthermore, the two fixing nuts are respectively located at the bottom of the connecting horizontal plate and at the bottom of the connection between the two supporting inclined top plates.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides a fitting device for pipe fittings and flanges. The top edges of the two ends of the support apex respectively abut against the inner walls of the fitting and flange, playing a positioning and supporting role. The concentricity between the fittings is ensured by the lifting screw and the fixing nut, realizing the rapid positioning and precise fitting of the fittings. 2. This utility model provides a fitting device for pipe fittings and flanges. By adjusting the height of the lifting screw, it can be adapted to pipe fittings of different diameters, and the device has a wide range of applications. 3. This utility model provides a device for aligning pipe fittings and flanges. The device has a simple structure and can be installed by a single person, which significantly improves work efficiency. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a structural diagram of a pipe fitting and flange mating device as described in Embodiment 1 of this utility model; Figure 2 This is a side view schematic diagram of a pipe fitting and flange mating device as described in Embodiment 1 of this utility model; Figure 3 This is a structural diagram of a pipe fitting and flange mating device as described in Embodiment 2 of this utility model; Figure 4 This is a side view schematic diagram of a pipe fitting and flange mating device as described in Embodiment 2 of this utility model.

[0016] 1-Lifting screw, 2-Connecting pipe fitting, 3-Fixing nut, 4-Supporting top plate, 5-Sliding connecting block, 6-Supporting inclined top plate, 7-Connecting horizontal plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present utility model can be combined with each other, and the described embodiments are only some embodiments of the present utility model, not all embodiments.

[0018] Example 1: See Figure 1-2 This embodiment describes a fitting device for aligning a pipe fitting and a flange. It includes a support apex and a lifting screw 1, both positioned at the joint end of the fitting 2. The support apex slides along the length of the lifting screw 1. A portion of the top edge of the support apex abuts against the inner wall of the joint end of the fitting 2, while the other portion extends to the outside of the joint end. The bottom end of the lifting screw 1 abuts against the inner wall of the joint end of the fitting 2. In this embodiment, the support apex... The bottom of the corner is slidably connected to the lifting screw 1. Both the upper and lower ends of the connection between the supporting corner and the lifting screw 1 are provided with fixing nuts 3. The two fixing nuts 3 respectively contact and cooperate with the upper and lower ends of the connection between the lifting screw 1. The fixing nuts 3 are screwed to the lifting screw 1. The top edges of the two ends of the supporting corner abut against the inner walls of the connecting pipe fitting 2 and the flange, respectively, playing a positioning and supporting role. The concentricity between the connecting pipe fittings 2 is ensured by the lifting screw 1 and the fixing nuts 3, realizing the rapid positioning and precise alignment of the connecting pipe fittings 2.

[0019] This embodiment adapts to pipe fittings of different diameters by adjusting the height of the lifting screw 1, thus making the device widely applicable. In this embodiment, the supporting apex is a V-shaped supporting apex, which includes a sliding connecting block 5 and two supporting top plates 4. The two supporting top plates 4 are inclined and symmetrically arranged on both sides of the top of the sliding connecting block 5. The lifting screw 1 slides through the center of the sliding connecting block 5. The bottom ends of the two supporting top plates 4 are connected to the sliding connecting block 5. A portion of the top edge of the two supporting top plates 4 abuts against the inner wall at the port of the connecting pipe fitting 2, and the other portion extends to the outside of the port of the connecting pipe fitting 2.

[0020] In this embodiment, the two fixing nuts 3 are respectively disposed at the upper and lower ends of the sliding connecting block 5 and screwed together with the lifting screw 1. The fixing nuts 3 are used to limit and fix the sliding connecting block 5. In this embodiment, taking the alignment of a DN300 pipe fitting and a flange as an example, the length of the support plate 4 in the V-shaped support apex is 200mm, the thickness is 10mm, and the included angle between it and the sliding connection block 5 is 45°. The lifting screw 1 is made of M20 thread, with a length of 250mm and a cross-sectional diameter of 25mm.

[0021] The operation steps in this embodiment are as follows: Step 1: Pass the lifting screw 1 through the two fixing nuts 3 at the top corner of the V-shaped support, rotate the wrench to make the lifting screw 1 rise in the sliding connecting block 5 until the overall diameter of the device is smaller than the inner diameter of the pipe to be aligned. Rotate the fixing nuts 3 and the lifting screw 1 to reduce the outer diameter of the entire device to 290mm, insert the pipe, and ensure that the top edges of the two support top plates 4 are in contact with the inner wall of the aligned pipe 2, and ensure that at least half of the length of the support top plates 4 is in close contact with the inner wall of the pipe; Step 2: Rotate the fixing nut 3 and the lifting screw 1 appropriately to adjust the relative position of the sliding connecting block 5 on the supporting top plate 4, so that the lifting screw 1 descends until its bottom contacts the inner wall of the connecting pipe fitting 2 and locks it. Step 3: Increase the tightening force of the fixing nut 3 and the lifting screw 1 so that the top edge of the supporting inclined plate 6 and the bottom of the lifting screw 1 are tightly fitted with the inner wall of the connecting pipe fitting 2; Step 4: Fit the flange onto the exposed part of the V-shaped support apex, and gently push it to the pipe opening to complete the precise alignment; Step 5: After welding is completed, rotate the fixing nut 3 and the lifting screw 1 to remove the device.

[0022] Example 2: See Figure 3-4This embodiment differs from Embodiment 1 in that the supporting apex is an inverted A-shaped supporting apex, comprising two supporting inclined apex plates 6 and a connecting horizontal plate 7. The two supporting inclined apex plates 6 are symmetrically arranged, with their bottom ends connected. A portion of the top edge of each of the two supporting inclined apex plates 6 abuts against the inner wall of the connecting pipe fitting 2 port, while the other portion extends to the outside of the connecting pipe fitting 2 port. The connecting horizontal plate 7 is disposed between the two supporting inclined apex plates 6, with both ends connected to the two supporting inclined apex plates 6 respectively. The lifting screw 1 slides through the center of the two supporting inclined apex plates 6 and the connecting horizontal plate 7.

[0023] In this embodiment, the two fixing nuts 3 are respectively set at the bottom of the connecting horizontal plate 7 and the bottom of the connection between the two supporting inclined top plates 6. The fixing nuts 3 play a role in limiting and fixing the top corner of the inverted A-shaped support.

[0024] In this embodiment, taking the alignment of a DN300 pipe fitting and a flange as an example, the length of the support inclined plate 6 in the inverted A-type support apex is 200mm and the thickness is 10mm. The included angle between the two support inclined plates 6 is 90°. The lifting screw 1 is made of M20 thread, with a length of 250mm and a cross-sectional diameter of 25mm.

[0025] The operation steps in this embodiment are as follows: Step 1: Pass the lifting screw 1 through the two fixing nuts 3 at the top corner of the inverted A-type support, rotate the wrench to make the lifting screw 1 rise at the top corner of the inverted A-type support until the overall diameter of the device is smaller than the inner diameter of the pipe to be aligned. Rotate the fixing nuts 3 and the lifting screw 1 to reduce the outer diameter of the entire device to 290mm, insert the pipe, and ensure that the top edges of the two support inclined top plates 6 are in contact with the inner wall of the aligned pipe fitting 2, and ensure that at least half of the length of the two support inclined top plates 6 is in close contact with the inner wall of the pipe fitting. Step 2: Rotate the fixing nut 3 and the lifting screw 1 appropriately to adjust the relative position of the inverted A-type support apex on the support top plate 4, so that the lifting screw 1 descends until its bottom contacts the inner wall of the connecting pipe fitting 2 and is locked. Step 3: Increase the tightening force of the fixing nut 3 and the lifting screw 1 so that the top edge of the supporting inclined plate 6 and the bottom of the lifting screw 1 are tightly fitted with the inner wall of the connecting pipe fitting 2; Step 4: Fit the flange onto the exposed part of the inverted A-type support apex, and gently push it to the pipe opening to complete the precise alignment; Step 5: After welding is completed, rotate the fixing nut 3 and the lifting screw 1 to remove the device.

[0026] This utility model device has a simple structure and can be installed by a single person, which significantly improves work efficiency.

[0027] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A pipe and flange alignment device, characterized by: It includes a support apex and a lifting screw (1), both of which are located at the port of the mating end of the connecting pipe fitting (2). The support apex slides along the length of the lifting screw (1) on the lifting screw (1). A portion of the top edge of the two ends of the support apex abuts against the inner wall of the port of the connecting pipe fitting (2), and the other portion extends to the outside of the port of the connecting pipe fitting (2). The bottom end of the lifting screw (1) abuts against the inner wall of the port of the connecting pipe fitting (2).

2. A pipe and flange alignment device according to claim 1, wherein: The bottom of the support apex is slidably connected to the lifting screw (1). The upper and lower ends of the connection between the support apex and the lifting screw (1) are provided with fixing nuts (3). The two fixing nuts (3) are respectively in contact with the upper and lower ends of the connection between the lifting screw (1). The fixing nuts (3) are screwed to the lifting screw (1).

3. A pipe and flange alignment device according to claim 2, wherein: The support apex is a V-shaped support apex, which includes a sliding connecting block (5) and two support top plates (4). The two support top plates (4) are inclined and symmetrically arranged on both sides of the top of the sliding connecting block (5). The lifting screw (1) slides through the center of the sliding connecting block (5). The bottom ends of the two support top plates (4) are connected to the sliding connecting block (5). A portion of the top edge of the two support top plates (4) abuts against the inner wall at the port of the connecting pipe fitting (2), and the other portion extends to the outside of the port of the connecting pipe fitting (2).

4. A pipe and flange alignment apparatus according to claim 3, wherein: The two fixing nuts (3) are respectively set at the upper and lower ends of the sliding connecting block (5) and screwed to the lifting screw (1).

5. A pipe and flange alignment apparatus according to claim 2, wherein: The supporting apex is an inverted A-shaped supporting apex, which includes two supporting inclined apex plates (6) and a connecting horizontal plate (7). The two supporting inclined apex plates (6) are symmetrically arranged, and the bottom ends of the two supporting inclined apex plates (6) are connected. A portion of the top edge of the two supporting inclined apex plates (6) abuts against the inner wall at the port of the connecting pipe fitting (2), and the other portion extends to the outside of the port of the connecting pipe fitting (2). The connecting horizontal plate (7) is arranged between the two supporting inclined apex plates (6), and the two ends of the connecting horizontal plate (7) are respectively connected to the two supporting inclined apex plates (6). The lifting screw (1) slides through the center of the two supporting inclined apex plates (6) and the connecting horizontal plate (7).

6. A pipe and flange alignment apparatus according to claim 5, wherein: The two fixing nuts (3) are respectively set at the bottom of the connecting horizontal plate (7) and at the bottom of the connection between the two supporting inclined top plates (6).

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