Auxiliary tool for welding pipeline flange

Abstract

The utility model provides an auxiliary tool for pipeline flange welding, which relates to the technical field of pipeline flange welding and comprises two fixing components and a pressing and supporting component. The fixing assembly comprises a transverse positioning section and a vertical positioning section which is vertically and upwards arranged on the transverse positioning section; during auxiliary positioning, the abutting supporting assembly is located between the two fixing assemblies and abuts against the faces, away from the vertical positioning sections, of the transverse positioning sections of the two fixing assemblies at the same time, so that the faces, close to the vertical positioning sections, of the transverse positioning sections of the two fixing assemblies abut against the inner pipe walls of a pipeline and a flange. And one surface, far away from the pipeline, of the flange abuts against the vertical positioning section. According to the technical scheme, the pipeline, the inner pipe of the flange and the outer side of the flange are positioned and fixed, the thickness of the flange does not need to be considered, and therefore the flange has the advantages of being high in applicability and capable of being matched with various flange thicknesses.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline flange welding, in particular to an auxiliary tool for pipeline flange welding. Background Art

[0002] At present, pipelines are mostly used for fluid transportation. When the transportation distance is long, flanges are usually needed to connect the pipelines. Therefore, the flanges and pipelines need to be coaxially and concentrically welded together. Since welding is a manual operation, there is an inaccurate positioning, which causes the flange and pipeline to deviate, affecting the welding quality and the tightness of the subsequent pipeline flange connection.

[0003] To this end, the Chinese utility model patent with the authorization announcement number "CN217776067U" and the patent name "A positioning tool for assisting flange welding" discloses a method of fixing the upper edge of the flange by forming a flange groove between the vertical plate, the horizontal plate and the flange fixing plate, and fixing the lower edge of the flange with a movable first fixing head, so as to facilitate the rapid completion of the positioning welding of the flange, reduce the deviation between the flange and the pipeline, and improve the welding quality. However, the above technical solution also has some shortcomings. For example, in the above technical solution, the width of the flange groove along the plane where the horizontal plate is located is required to be the same as the thickness of the flange, that is, the technical solution is only suitable for the positioning of flanges of one size, and in field work, the specifications of pipeline flanges are often inconsistent, and there will be differences in thickness, so the applicability of the technical solution in this regard is not high.

[0004] Therefore, an auxiliary tool for pipeline flange welding with high applicability and adaptability to various flange thicknesses needs to be designed. Utility Model Content

[0005] The purpose of the utility model is to provide an auxiliary tool for pipe flange welding in view of the defects and shortcomings of the prior art, which at least solves one of the above-mentioned technical problems and has the advantages of high applicability and adaptability to various flange thicknesses.

[0006] To achieve the above object, the utility model provides an auxiliary tool for pipeline flange welding, comprising:

[0007] Two fixing components and a pressing support component; the fixing component includes a transverse positioning section and a vertical positioning section vertically arranged upward on the transverse positioning section; during auxiliary positioning, the pressing support component is located between the two fixing components and simultaneously presses the transverse positioning sections of the two fixing components on one side away from the vertical positioning section, so that the transverse positioning sections of the two fixing components close to the vertical positioning section are pressed against the inner pipe walls of the pipeline and the flange, and the side of the flange away from the pipeline is pressed against the vertical positioning section.

[0008] Optionally, the pressure support assembly includes a first positioning hole vertically arranged in the lateral positioning section. When assisting positioning, a first screw rod, whose first end passes through one of the first positioning holes and whose second end passes through another of the first positioning holes, is threadedly engaged with the first end of the first screw rod and presses against the first nut of one of the fixing assemblies, and is threadedly engaged with the second end of the first screw rod and presses against the second nut of the other of the fixing assemblies.

[0009] Optionally, the transverse positioning section has a first end and a second end, the vertical positioning section is configured between the first end and the second end of the transverse positioning section, and the first positioning hole is configured at a position of the transverse positioning section close to the first end.

[0010] Optionally, the distance from the vertical positioning section to the first end of the lateral positioning section is greater than the distance from the vertical positioning section to the second end of the lateral positioning section.

[0011] Optionally, the pressure support assembly also includes a second screw rod, a third nut and a fourth nut; a second positioning hole is vertically arranged near the second end of the lateral positioning section; during auxiliary positioning, the first end of the second screw rod passes through one of the second positioning holes, and the second end passes through the other second positioning hole; the third nut is threadedly engaged with the first end of the second screw rod and presses against one of the fixing assemblies, and the fourth nut is threadedly engaged with the second end of the second screw rod and presses against the other fixing assembly to support the second ends of the two fixing assemblies.

[0012] Optionally, the fixing assembly is a channel steel member, the transverse positioning section includes a middle web and flanges located on both sides of the web; and the vertical positioning section is a vertical plate protruding from the same transverse position of the two flanges.

[0013] Optionally, the pressure support assembly further includes a gasket, which can be arranged between the first nut and the fixing assembly, between the second nut and the fixing assembly, between the third nut and the fixing assembly, and between the fourth nut and the fixing assembly.

[0014] Optionally, the length of the first screw and the second screw is 10 mm-20 mm smaller than the inner diameter of the pipe.

[0015] Optionally, the first positioning hole and the second positioning hole have a diameter of 11 mm; the first screw and the second screw are both M8 full-thread screws; the first nut, the second nut, the third nut and the fourth nut are all M8 nuts; the gasket is a flat gasket compatible with the M8 screw.

[0016] Compared with the prior art, the advantages of this application are:

[0017] During auxiliary positioning, the two fixing components, under the pressure of the pressing support component, respectively press against the inner tube wall of the pipeline and the flange to limit the rotational freedom of the pipeline and the flange; at the same time, under the action of the outer side of the horizontal positioning section and the vertical positioning section of the fixing component, the axial movement freedom of the pipeline and the flange can be limited; in this way, it is convenient for workers to weld the pipeline and the flange coaxially and concentrically. Since this technical solution positions and fixes the inner tube of the pipeline and the flange and the outer side of the flange, that is, there is no need to consider the thickness of the flange, it has the advantages of high applicability and adaptability to a variety of flange thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A bottom view of a cleaning device according to an embodiment of the utility model;

[0020] Figure 2 This is a partial structural exploded view of the cleaning device according to an embodiment of the utility model;

[0021] Description of Reference Numerals

[0022] 1-fixing assembly; 11-lateral positioning section; 111-web; 112-flange; a-first positioning hole; b-second positioning hole; 12-vertical positioning section;

[0023] 2-pressure support assembly; 21-first screw; 22-first nut; 23-second nut; 24-second screw; 25-third nut; 26-fourth nut; 27-gasket;

[0024] 200-pipeline;

[0025] 300-Flange. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "back", "side", "circumferential" and the like in the present invention indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, the words "first", "second" and the like are only used to distinguish multiple components or structures with the same or similar structures, and do not represent any special limitation on the setting order or connection relationship.

[0028] Please refer to Figure 1 to Figure 2 The embodiment of the utility model provides an auxiliary tool for pipeline flange welding, which is used to assist the positioning and fixing of the pipeline 200 and the flange 300, so as to facilitate the sealing welding of the pipeline 200 and the flange 300. The auxiliary tool for pipeline flange welding includes two fixing components 1 and a pressing support component 2; wherein the fixing component 1 includes a transverse positioning section 11 and a vertical positioning section 12 vertically arranged on the transverse positioning section 11; during auxiliary positioning, part of the upper surface of the transverse positioning section 11 is used to press against the inner pipe wall of the pipeline 200 and the flange 300; the vertical positioning section 12 is used for the flange 300 to abut against the pipeline 200 away from the pipeline 200 to form an axial limit, that is, to limit the axial movement freedom of the pipeline 200 and the flange 300 during positioning welding; during auxiliary positioning, the pressing support component 2 is located between the two fixing components 1, and simultaneously presses against the side of the transverse positioning sections 11 of the two fixing components 1 away from the vertical positioning section 12, so that the side of the transverse positioning sections 11 of the two fixing components 1 close to the vertical positioning section 12 is pressed against the inner pipe wall of the pipeline 200 and the flange 300, and the side of the flange 300 away from the pipeline 200 abuts against the vertical positioning section 12.

[0029] Thus, during auxiliary positioning, the two fixing components 1, under the pressure of the pressing support component 2, respectively press against the inner tube wall of the pipe 200 and the flange 300 to limit the rotational freedom of the pipe 200 and the flange 300; at the same time, under the action of the outer side of the horizontal positioning section 11 and the vertical positioning section 12 of the fixing component 1, the axial movement freedom of the pipe 200 and the flange 300 can be limited; thus, it is convenient for workers to coaxially and concentrically weld the pipe 200 and the flange 300. Since the technical solution positions and fixes the inner tube of the pipe 200 and the flange 300 and the outer side of the flange 300, that is, there is no need to consider the thickness of the flange 300, and therefore, it has the advantages of high applicability and adaptability to various thicknesses of the flange 300.

[0030] Optionally, in this embodiment, the pressing support component 2 and the two fixing components 1 are split structures, and when auxiliary positioning is required, the pressing support component 2 is arranged between the two fixing components 1 to press the side of the lateral positioning section 11 of the two fixing components 1 away from the vertical positioning section 12; of course, in other embodiments, the pressing support component 2 and the two fixing components 1 are integrated structures, but the positional relationship between the pressing support component 2 and the two fixing components 1 can be adjusted. No specific limitation is made here.

[0031] Optionally, see Figure 1 and Figure 2 In this embodiment, the pressing support component 2 includes a first positioning hole a, a first screw rod 21, a first nut 22 and a second nut 23. Among them, the first positioning hole a is on the horizontal positioning section 11 of the vertically configured fixing component 1. Specifically, the first positioning hole a is configured in the horizontal positioning section 11 and is located on one side of the vertical positioning section 12. Preferably, it is configured at the midline position in the width direction of the horizontal positioning section 11. During auxiliary positioning, the first end of the first screw rod 21 passes through the first positioning hole a of one of the fixing components 1, and the second end passes through the first positioning hole a of the other fixing component 1; the first nut 22 is threadedly matched with the first end of the first screw rod 21 and presses against one of the fixing components 1; the second nut 23 is threadedly matched with the second end of the first screw rod 21 and presses against the other fixing component 1. In this way, during auxiliary positioning, the pressing support component 2 is located between the two fixed components 1 and simultaneously presses the side of the lateral positioning section 11 of the two fixed components 1 away from the vertical positioning section 12, so that the side of the lateral positioning section 11 of the two fixed components 1 close to the vertical positioning section 12 is pressed against the inner pipe wall of the pipe 200 and the flange 300. Of course, in other embodiments, the pressing support component 2 can also be a support pad, which can be placed between the two fixed components 1 to provide abutment support during auxiliary positioning. No specific restrictions are made here. In addition, the pressing support component 2 structure using a screw and a nut can adjust the distance between the two fixed components 1 within a certain range to adapt to the pipe 200 and the flange 300 within a certain inner diameter range, so as to enhance the application scenario of the auxiliary tool for welding the pipe 200 and the flange 300.

[0032] Optionally, see Figure 1 and Figure 2In the present embodiment, the transverse positioning segment 11 has a first end and a second end, the vertical positioning segment 12 is disposed between the first end and the second end of the transverse positioning segment 11, and the first positioning hole a is disposed at a position of the transverse positioning segment 11 close to the first end. In this way, it is convenient to manually adjust the fixing component 1 during or after the auxiliary positioning. Specifically, in the present embodiment, the distance from the vertical positioning segment 12 to the first end of the transverse positioning segment 11 is greater than the distance from the vertical positioning segment 12 to the second end of the transverse positioning segment 11. Of course, in other embodiments, the vertical positioning segment 12 may also be directly disposed at the end of the transverse positioning segment 11, which is not specifically limited herein.

[0033] In order to strengthen the supporting force between the two fixing components 1 during auxiliary positioning, the two fixing components 1 are pressed against the inner wall of the pipe 200 and the flange 300 to limit the freedom of movement of the pipe 200 and the flange 300; optionally, please refer to Figure 1 and Figure 2 In this embodiment, the pressing support component 2 also includes a second screw rod 24, a third nut 25 and a fourth nut 26; the transverse positioning section 11 is vertically provided with a second positioning hole b near the second end; during auxiliary positioning, the first end of the second screw rod 24 passes through one of the second positioning holes b, and the second end passes through the other second positioning hole b; the third nut 25 is threadedly matched with the first end of the second screw rod 24 and presses against one of the fixing components 1, and the fourth nut 26 is threadedly matched with the second end of the second screw rod 24 and presses against the other fixing component 1 to support the second ends of the two fixing components 1. In this way, an additional support point is provided at the second end of the transverse positioning section 11 located on the outer side of the inner pipe wall of the pipe 200 and the flange 300, so that the two fixing components 1 can provide more reliable support to prevent the pipe 200 and the flange 300 from loosening and shifting during welding, resulting in welding deviation.

[0034] Optionally, see Figure 2 In this embodiment, the fixing component 1 is a channel steel member, and the transverse positioning section 11 includes a middle web 111 and flanges 112 located on both sides of the web 111; the vertical positioning section 12 is a vertical plate protruding from the same transverse position of the two flanges 112. In this way, the fixing component 1 has the advantage of saving manufacturing materials. The first positioning hole a and the second positioning hole b are both vertically arranged at the midpoint of the width direction of the web 111, and are located on both sides of the vertical plate. Of course, in other embodiments, the fixing component 1 can also be a plate structure, that is, the transverse positioning section 11 is directly a plate; no specific limitation is made here.

[0035] In order to prevent the nut from damaging the inner side of the fixing component 1 when pressing the fixing component 1, optionally, refer to Figure 1In this embodiment, the pressure support assembly 2 also includes a gasket 27, which can be configured between the first nut 22 and the fixing assembly 1, between the second nut 23 and the fixing assembly 1, between the third nut 25 and the fixing assembly 1, and between the fourth nut 26 and the fixing assembly 1.

[0036] The first screw 21 and the second screw 24 need to match the inner diameters of the pipe 200 and the flange 300. Optionally, in this embodiment, the lengths of the first screw 21 and the second screw 24 are set to be 10mm-20mm smaller than the inner diameter of the pipe 200 to avoid interference with the inner wall of the pipe 200 during auxiliary positioning.

[0037] Optionally, the first positioning hole a and the second positioning hole b have a diameter of 11 mm; the first screw 21 and the second screw 24 are both M8 full-thread screws; the first nut 22, the second nut 23, the third nut 25 and the fourth nut 26 are all M8 nuts; the gasket 27 is a flat gasket 27 compatible with the M8 screw.

[0038] The use process of the auxiliary tool for pipe flange welding in this embodiment is roughly as follows:

[0039] First, assemble the first nut 22 and the washer 27 on the first end of the first screw rod 21, and pass it through the first positioning hole a of one of the fixing components 1; assemble the second nut 23 and the washer 27 on the second end of the first screw rod 21, and pass it through the first positioning hole a of the other fixing component 1;

[0040] Insert one end of the first screw 21 set on the two fixing components 1 into the inner hole of the flange 300 and place it against the side of the vertical positioning section 12;

[0041] Then, the two fixing components 1 are arranged such that one end of the first screw 21 is inserted into the inner tube of the pipe 200, and the pipe 200 is abutted against the side of the flange 300 away from the vertical positioning section 12;

[0042] Next, by adjusting the first nut 22 and the second nut 23, the side of the lateral positioning section 11 of the two fixing components 1 close to the vertical positioning section 12 is pressed against the inner pipe walls of the pipeline 200 and the flange 300, the weld gap between the flange 300 and the pipeline 200 is adjusted, and the side of the flange 300 away from the pipeline 200 is pressed against the vertical positioning section 12.

[0043] Finally, the second screw rod 24, the third nut 25, the fourth nut 26 and the gasket 27 are assembled with the second ends of the two fixing components 1. The flange 300 and the pipeline 200 can then be welded.

[0044] After welding, the fixing component 1 can be taken out by loosening the nut.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An auxiliary tool for pipe flange welding, characterized in that: include: Two fixing components (1) and a pressing support component (2); the fixing component (1) comprises a transverse positioning section (11) and a vertical positioning section (12) vertically arranged on the transverse positioning section (11); during auxiliary positioning, the pressing support component (2) is located between the two fixing components (1) and simultaneously presses the transverse positioning sections (11) of the two fixing components (1) on one side away from the vertical positioning section (12), so that the transverse positioning sections (11) of the two fixing components (1) on one side close to the vertical positioning section (12) are pressed against the inner pipe walls of the pipeline (200) and the flange (300), and the flange (300) on one side away from the pipeline (200) is pressed against the vertical positioning section (12).

2. The auxiliary tool for pipe flange welding according to claim 1, characterized in that: The pressing support component (2) comprises a first positioning hole (a) vertically arranged on the lateral positioning section (11). When assisting in positioning, a first screw rod (21) whose first end passes through one of the first positioning holes (a) and whose second end passes through another of the first positioning holes (a) is threadedly engaged with the first end of the first screw rod (21) and presses against a first nut (22) of one of the fixing components (1), and is threadedly engaged with the second end of the first screw rod (21) and presses against a second nut (23) of another of the fixing components (1).

3. The auxiliary tool for pipe flange welding according to claim 2, characterized in that: The transverse positioning section (11) has a first end and a second end, the vertical positioning section (12) is arranged between the first end and the second end of the transverse positioning section (11), and the first positioning hole (a) is arranged at a position of the transverse positioning section (11) close to the first end.

4. The auxiliary tool for pipe flange welding according to claim 3, characterized in that: The distance from the vertical positioning section (12) to the first end of the transverse positioning section (11) is greater than the distance from the vertical positioning section (12) to the second end of the transverse positioning section (11).

5. The auxiliary tool for pipe flange welding according to claim 3, characterized in that: The pressing support component (2) further comprises a second screw rod (24), a third nut (25) and a fourth nut (26); a second positioning hole (b) is vertically arranged near the second end of the lateral positioning section (11); during auxiliary positioning, the first end of the second screw rod (24) passes through one of the second positioning holes (b), and the second end passes through another of the second positioning holes (b); the third nut (25) is threadedly matched with the first end of the second screw rod (24) and presses against one of the fixing components (1); the fourth nut (26) is threadedly matched with the second end of the second screw rod (24) and presses against another of the fixing components (1) to support the second ends of the two fixing components (1).

6. The auxiliary tool for pipe flange welding according to claim 5, characterized in that: The fixing assembly (1) is a channel steel member, the transverse positioning section (11) comprises a middle web (111) and flanges (112) located on both sides of the web (111); the vertical positioning section (12) is a vertical plate protruding from the same transverse position of the two flanges (112).

7. The auxiliary tool for pipe flange welding according to claim 5, characterized in that: The pressure support assembly (2) further comprises a gasket (27), and the gasket (27) can be arranged between the first nut (22) and the fixing assembly (1), between the second nut (23) and the fixing assembly (1), between the third nut (25) and the fixing assembly (1), and between the fourth nut (26) and the fixing assembly (1).

8. The auxiliary tool for pipe flange welding according to claim 6, characterized in that: The lengths of the first screw (21) and the second screw (24) are 10 mm to 20 mm smaller than the inner diameter of the pipe (200).

9. The auxiliary tool for pipe flange welding according to claim 7, characterized in that: The first positioning hole (a) and the second positioning hole (b) have a diameter of 11 mm; the first screw (21) and the second screw (24) are both M8 full-thread screws; the first nut (22), the second nut (23), the third nut (25) and the fourth nut (26) are all M8 nuts; the gasket (27) is a flat gasket (27) compatible with the M8 screw.

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