Supporting tool for pipeline welding

Abstract

The invention provides a supporting tool for pipeline welding, and relates to the technical field of pipeline welding. The supporting tool for pipeline welding comprises a first connecting assembly, a second connecting assembly and a supporting assembly. The first connecting assembly and the second connecting assembly are installed on the two sides of the supporting assembly correspondingly, and a supporting part is arranged on the supporting assembly and used for abutting against the lower portion of a pipe body at the pipeline welding position. The first connecting assembly and the second connecting assembly are used for being connected with pipe bodies on the two sides of the welding position of the pipeline correspondingly so as to apply downward or obliquely-downward pulling force to the pipeline. According to the tool, the to-be-welded position of the pipeline is supported through the supporting assembly, meanwhile, downward or obliquely downward pulling force is applied to pipe bodies on the two sides of the welded position of the pipeline through the first connecting assembly and the second connecting assembly, and therefore the pipe bodies on the two sides of the welded position of the pipeline can be effectively prevented from tilting upwards and deforming in the welding process; the welding efficiency is effectively improved, and the reworking probability of pipeline deformation is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, and in particular to a supporting tool for pipeline welding. Background Art

[0002] The containment spray system is one of the special safety facilities in nuclear power plants. It is used to spray boron-containing water into the containment when a water loss accident occurs in the containment of a nuclear power plant or the main steam pipe ruptures, thereby limiting the sharp increase in pressure in the containment, while shortening the duration of high pressure, reducing peak pressure and temperature, and preventing the containment from overpressure failure.

[0003] The containment spray system usually has a spray pipe and multiple spray heads welded on the spray pipe. However, during the process of welding the spray head to the spray pipe, the pipe body of the spray pipe located on both sides of the spray head is prone to upward deformation. Therefore, after welding each spray head on the spray pipe, it is necessary to wait for it to cool down (about 30 minutes) before welding the next spray head, resulting in process interruption and low welding efficiency. Moreover, if the spray pipe is deformed after welding the spray head, it is necessary to support the spray pipe with a jack for rework to restore the spray pipe to its original shape, which seriously wastes manpower and material resources. Summary of the invention

[0004] The purpose of the present invention is to provide a supporting tool for pipeline welding to alleviate the technical problem in the prior art that when the spray head is welded to the spray pipe, the pipe body of the spray pipe located on both sides of the spray head is easily deformed and tilted upward, resulting in the need to wait for each spray head to cool down after welding before welding the next spray head, causing process interruption and low welding efficiency. If the spray pipe is deformed, the spray pipe needs to be reworked to restore it to its original shape, which seriously wastes manpower and material resources.

[0005] In a first aspect, the present invention provides a support tool for pipeline welding, comprising a first connection assembly, a second connection assembly and a support assembly;

[0006] The first connecting assembly and the second connecting assembly are respectively installed on both sides of the supporting assembly, and a supporting portion is provided on the supporting assembly, and the supporting portion of the supporting assembly is used to abut under the pipe body at the pipe welding position to support the pipe;

[0007] The first connecting assembly and the second connecting assembly are used to be connected to the pipe bodies on both sides of the pipe welding point respectively, so as to apply a downward or oblique downward pulling force to the pipe.

[0008] In an optional embodiment, the first connecting assembly includes a first connecting rod and a first connecting member, and the second connecting assembly includes a second connecting rod and a second connecting member;

[0009] The first connecting rod and the second connecting rod are respectively connected to the position of the support assembly lower than the support part, and the first connecting member is fixed on the first connecting rod, and the second connecting member is fixed on the second connecting rod. The first connecting member and the second connecting member are used to be respectively connected to the pipe body on both sides of the pipeline welding point.

[0010] In an optional embodiment, the first connecting rod and the second connecting rod are both in the shape of straight rods, and the first connecting rod is arranged at an acute angle with the central axis of the support assembly, so that the connection between the first connecting member and the first connecting rod is higher than the connection between the first connecting rod and the support assembly;

[0011] The second connecting rod is disposed at an acute angle to the central axis of the supporting assembly, so that a connection point between the second connecting member and the second connecting rod is higher than a connection point between the second connecting rod and the supporting assembly.

[0012] In an optional embodiment, one end of the first connecting rod and one end of the second connecting rod are respectively connected to the supporting assembly, the first connecting member is fixed to the other end of the first connecting rod, and the second connecting member is fixed to the other end of the second connecting rod.

[0013] In an optional embodiment, the first connecting member and the second connecting member are hooks bent downward.

[0014] In an optional embodiment, a line between a connection point between the first connecting rod and the support assembly and a connection point between the second connecting rod and the support assembly is perpendicular to a central axis of the pipe, and a midpoint of the line is a symmetry point, and the first connecting assembly and the second connecting assembly are symmetrical about the center of the symmetry point.

[0015] In an optional embodiment, the connection between the first connecting member and the first connecting rod and the connection between the second connecting member and the second connecting rod are located on the same horizontal plane, and the horizontal and vertical spacing between the connection between the first connecting member and the first connecting rod and the central axis of the support assembly is equal to the horizontal and vertical spacing between the connection between the second connecting member and the second connecting rod and the central axis of the support assembly.

[0016] In an optional embodiment, the first connecting component and the second connecting component are both telescopic structures, and / or the first connecting component and the second connecting component are both able to move along the length direction of the supporting component and be fixedly connected to any position of the supporting component after movement.

[0017] In an optional embodiment, the supporting assembly includes a screw rod and a nut, the nut is threadedly connected to the screw rod, and the first connecting assembly and the second connecting assembly are respectively fixed on two sides of the nut.

[0018] In an optional embodiment, the support portion is a plate-like structure with a curved surface.

[0019] The support tool for pipeline welding provided by the present invention comprises a first connection component, a second connection component and a support component; the first connection component and the second connection component are respectively installed on both sides of the support component, and a support part is provided on the support component, and the support part of the support component is used to abut under the pipe body of the pipe welding position to support the pipe; the first connection component and the second connection component are used to connect with the pipe body on both sides of the pipe welding position respectively to apply a downward or inclined downward pulling force to the pipe. The support tool for pipeline welding provided by the present invention is used to support the pipe during the pipe welding operation. For example, when a structure such as a sprinkler head is welded to the pipe body of a sprinkler pipe, the support tool for pipeline welding can support the sprinkler pipe under the sprinkler pipe. Specifically, in the process of welding a structure such as a sprinkler head to a pipe such as a sprinkler pipe, the support component in the support tool for pipeline welding can be placed under the pipe, and the support part can be abutted under the pipe body of the pipe welding position, that is, the support part can be abutted under the position of the sprinkler head to be welded on the pipe. At this time, in order not to hinder the welding process, the position of the sprinkler head to be welded on the pipe can be set upward. While placing the support assembly under the pipeline, the first connection assembly and the second connection assembly in the pipeline welding support tooling are also required to be connected to the pipe bodies on both sides of the pipeline welding point. Then the welding operation can be carried out. During the welding process, when the pipe bodies on both sides of the pipeline welding point (that is, the pipe bodies on both sides of the sprinkler head) are heated and have a tendency to bend upward and deform, the first connection assembly and the second connection assembly on both sides of the support assembly can apply a downward or inclined downward pulling force to the pipes connected thereto, thereby effectively limiting the upward bending and deformation of the pipe bodies on both sides of the pipeline welding point, so that the pipeline can still maintain its original shape after the welding operation is completed, and there is no need to wait for the pipe at the welding point to cool down before carrying out the welding operation at the next welding point, so that the welding process of multiple sprinkler heads on the pipeline can be carried out continuously or simultaneously, thereby effectively improving the welding efficiency. In addition, since the pipeline can still maintain its original shape after the welding operation is completed, there is no need to support the pipeline with a jack to perform rework to restore the pipeline to its original shape, which can further improve the welding efficiency and reduce the consumption of manpower and material resources.

[0020] Compared with the prior art, the tooling provided by the present invention supports the pipe to be welded by means of a supporting assembly, and at the same time uses the first connecting assembly and the second connecting assembly to apply a downward or inclined downward pulling force to the pipe body on both sides of the pipe welding point, thereby effectively limiting the upward deformation of the pipe body on both sides of the pipe welding point during the welding process, effectively improving the welding efficiency and reducing the probability of rework due to pipe deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a support tool for pipeline welding provided in an embodiment of the present invention;

[0023] Figure 2 A schematic structural diagram of a pipeline welding support fixture, a pipeline and a spray head provided in an embodiment of the present invention.

[0024] Icons: 1-first connecting assembly; 10-first connecting rod; 11-first connecting piece; 2-second connecting assembly; 20-second connecting rod; 21-second connecting piece; 3-support assembly; 30-support part; 31-screw; 32-nut; 33-base; 34-sleeve; 4-pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] Example:

[0029] like Figure 1 and Figure 2As shown, the support tool for pipeline welding provided in this embodiment includes a first connecting component 1, a second connecting component 2 and a supporting component 3; the first connecting component 1 and the second connecting component 2 are respectively installed on both sides of the supporting component 3, and a supporting portion 30 is provided on the supporting component 3, and the supporting portion 30 of the supporting component 3 is used to abut against the bottom of the pipe body of the pipe 4 at the welding point to support the pipe 4; the first connecting component 1 and the second connecting component 2 are used to be connected to the pipe bodies on both sides of the welding point of the pipe 4 respectively, so as to apply a downward or oblique downward pulling force to the pipe 4.

[0030] The pipe welding support tool provided in this embodiment is used to support the pipe 4 during the pipe welding operation. For example, when welding structures such as a sprinkler head to the pipe body of a sprinkler pipe, the pipe welding support tool can support the sprinkler pipe from below the sprinkler pipe.

[0031] Specifically, in the process of welding structures such as sprinkler heads to pipes 4 such as sprinkler pipes, the support assembly 3 in the pipe welding support tooling can be placed under the pipe 4 first, and the support portion 30 can be abutted against the bottom of the pipe body at the welding point of the pipe 4, that is, the support portion 30 can be abutted against the bottom of the position of the sprinkler head to be welded on the pipe 4. At this time, in order not to hinder the welding process, the position of the sprinkler head to be welded on the pipe 4 can be set upward.

[0032] While placing the support assembly 3 under the pipe 4, the first connection assembly 1 and the second connection assembly 2 in the pipe welding support tooling need to be connected to the pipe bodies on both sides of the pipe 4 welding point. Then the welding operation can be carried out. During the welding process, when the pipe bodies on both sides of the pipe 4 welding point (that is, the pipe bodies on both sides of the sprinkler head) are heated and have a tendency to bend upward and deform, the first connection assembly 1 and the second connection assembly on both sides of the support assembly 3 can apply a downward or oblique downward pulling force to the pipe 4 connected thereto, thereby effectively limiting the upward bending and deformation of the pipe bodies on both sides of the pipe 4 welding point, so that the pipe 4 can still maintain its original shape after the welding operation is completed, and there is no need to wait for the pipe 4 at the welding point to cool down before carrying out the welding operation at the next welding point, so that the welding process of multiple sprinkler heads on the pipe 4 can be carried out continuously or simultaneously, thereby effectively improving the welding efficiency.

[0033] Furthermore, since the pipe 4 can still maintain its original shape after the welding operation is completed, there is no need to support the pipe 4 with a jack for rework to restore the pipe 4 to its original shape, which can further improve the welding efficiency and reduce the consumption of manpower and material resources.

[0034] Compared with the prior art, the tooling provided in this embodiment supports the portion of the pipe 4 to be welded by means of the support assembly 3, and at the same time uses the first connection assembly 1 and the second connection assembly 2 to apply a downward or inclined downward pulling force to the pipe body on both sides of the welding portion of the pipe 4, thereby effectively limiting the upward deformation of the pipe body on both sides of the welding portion of the pipe 4 during the welding process, thereby effectively improving the welding efficiency and reducing the probability of the pipe 4 being deformed and requiring rework.

[0035] The first connection component 1 and the second connection component 2 may be a cable or a rope. Figure 1 As shown, the first connecting assembly 1 includes a first connecting rod 10 and a first connecting piece 11, and the second connecting assembly 2 includes a second connecting rod 20 and a second connecting piece 21; the first connecting rod 10 and the second connecting rod 20 are respectively connected to the support assembly 3 at a position lower than the support portion 30, and the first connecting piece 11 is fixed on the first connecting rod 10, and the second connecting piece 21 is fixed on the second connecting rod 20, and the first connecting piece 11 and the second connecting piece 21 are used to respectively connect to the pipe body on both sides of the welding point of the pipe 4.

[0036] Compared with a pull cable or a pull rope, the first connecting rod 10 and the second connecting rod 20 can respectively increase the strength of the first connecting component 1 and the second connecting component 2, thereby making the pulling force of the first connecting component 1 and the second connecting component 2 on the pipeline 4 more reliable, and effectively improving the deformation resistance of the pipeline welding support tooling to the pipeline 4 being welded.

[0037] Further, such as Figure 1 As shown, the first connecting rod 10 and the second connecting rod 20 are both straight rod-shaped, and the first connecting rod 10 is set at an acute angle to the central axis of the support assembly 3, so that the connection between the first connecting member 11 and the first connecting rod 10 is higher than the connection between the first connecting member 10 and the support assembly 3; the second connecting rod 20 is set at an acute angle to the central axis of the support assembly 3, so that the connection between the second connecting member 21 and the second connecting rod 20 is higher than the connection between the second connecting rod 20 and the support assembly 3.

[0038] Compared with the first connecting rod 10 and the second connecting rod 20 being arranged perpendicular to the central axis of the support assembly 3, the acute angle arrangement can not only utilize the triangular structure to further enhance the supporting stability of the first connecting rod 10 and the second connecting rod 20 on the pipe 4, but also effectively shorten the distance between the first connecting member 11 and the pipe 4 and shorten the distance between the second connecting member 21 and the pipe 4, thereby effectively improving the ease of use of the support tooling for pipe welding.

[0039] Among them, there is no restriction on the acute angle between the first connecting rod 10 and the central axis of the support assembly 3, and the acute angle between the second connecting rod 20 and the central axis of the support assembly 3. In order to improve the supporting stability and anti-deformation effect of the pipeline welding support tooling on the pipeline 4, this embodiment preferably sets the acute angle between the first connecting rod 10 and the central axis of the support assembly 3, and the acute angle between the second connecting rod 20 and the central axis of the support assembly 3 to 45 degrees. Correspondingly, the angle between the first connecting rod 10 and the second connecting rod 20 is 90 degrees.

[0040] In order to save materials and reduce the space occupied by the support tooling for pipeline welding, in this embodiment, one end of the first connecting rod 10 and one end of the second connecting rod 20 are preferably connected to the support assembly 3 respectively, the first connecting member 11 is fixed to the other end of the first connecting rod 10, and the second connecting member 21 is fixed to the other end of the second connecting rod 20.

[0041] The first connecting member 11 and the second connecting member 21 may be connecting members such as clamps and clamps.

[0042] In order to improve the convenience of using the first connecting member 11 and the second connecting member 21, in this embodiment, the first connecting member 11 and the second connecting member 21 are preferably hooks bent downward.

[0043] When the first connector 11 and the second connector 21 are connected to the pipe bodies on both sides of the pipe 4 at the welding point, it is only necessary to hang the hooks on the pipe bodies respectively, and then make the support part 30 abut against the bottom of the pipe body at the welding point of the pipe 4.

[0044] It should be noted that, since the hook is bent downward, after the hook is hooked on the pipe body of the pipe 4, it can apply a downward pulling force to the pipe 4 when the pipe 4 has a tendency to warp upward and deform, thereby effectively preventing the pipe 4 from warping and deforming.

[0045] In order to improve the stability of the hook's contact with the pipe 4, in this embodiment, the curvature of the hook is preferably consistent with the curvature of the pipe body of the pipe 4. At this time, the inner wall of the hook can completely fit with the outer wall of the pipe 4, thereby effectively increasing the contact area between the hook and the pipe 4.

[0046] Specifically, the hook may be semicircular, and the inner diameter of the hook is not specifically limited and may be selected according to the outer diameter of the pipe 4. For example, when the outer diameter of the pipe 4 is 34 mm, the inner diameter of the hook may be 34 mm accordingly.

[0047] In this embodiment, if Figure 1 As shown, the line between the connection point between the first connecting rod 10 and the support assembly 3 and the connection point between the second connecting rod 20 and the support assembly 3 is perpendicular to the central axis of the pipeline 4, and the midpoint of the line is the symmetry point, and the first connecting assembly 1 and the second connecting assembly 2 are symmetrical about the symmetry point.

[0048] At this time, the first connecting member 11 bends downward from one end connected to the first connecting rod 10 to the other end, along the direction close to the central axis of the support assembly 3; the second connecting member 21 bends downward from one end connected to the second connecting rod 20 to the other end, along the direction close to the central axis of the support assembly 3, and the connecting line between the connection point of the first connecting rod 10 and the support assembly 3 and the connection point of the second connecting rod 20 and the support assembly 3 is perpendicular to the central axis of the pipe 4.

[0049] This arrangement not only ensures that the first connecting member 11, the support portion 30 and the second connecting member 21 are spaced apart along the axial direction of the pipe 4, thereby ensuring the stability of the pipe 4 on the support tooling for pipe welding, but also enables the first connecting member 11 and the second connecting member 21 to be hooked in opposite directions on the pipe 4, thereby forming a clamping effect on the pipe 4, effectively preventing the pipe 4 from being deflected or detached in the radial direction on the support portion 30, and improving the stability of the lifting pipe 4 on the support portion 30.

[0050] like Figure 1 As shown, the connection between the first connecting member 11 and the first connecting rod 10 and the connection between the second connecting member 21 and the second connecting rod 20 are located on the same horizontal plane, and the horizontal and vertical spacing between the connection between the first connecting member 11 and the first connecting rod 10 and the central axis of the support assembly 3 is equal to the horizontal and vertical spacing between the connection between the second connecting member 21 and the second connecting rod 20 and the central axis of the support assembly 3.

[0051] This arrangement can effectively improve the symmetry of the positions of the first connecting member 11 and the second connecting member 21 on both sides of the support assembly 3, thereby improving the supporting balance of the first connecting assembly 1 and the second connecting assembly 2 on the pipe 4, so that the pipe 4 can remain horizontal on the support portion 30, further improving the stability of the pipe 4 on the support portion 30.

[0052] In this embodiment, the first connecting component 1 and the second connecting component 2 are both telescopic structures, and / or the first connecting component 1 and the second connecting component 2 can both move along the length direction of the supporting component 3 and be fixedly connected to any position of the supporting component 3 after movement.

[0053] Regardless of whether the first connecting component 1 and the second connecting component 2 are both telescopic structures, or the first connecting component 1 and the second connecting component 2 are both able to move along the length direction of the supporting component 3, the heights of the first connecting component 1 and the second connecting component 2 from the ground can be adjusted for pipes 4 of different straightnesses, so that the supporting tooling for pipe welding can adapt to pipes 4 of different sizes.

[0054] When both the first connecting component 1 and the second connecting component 2 are telescopic structures, the first connecting component 1 and the second connecting component 2 can both adopt telescopic pipes or telescopic slide rails.

[0055] When both the first connecting component 1 and the second connecting component 2 can move along the length direction of the supporting component 3, this can be achieved by threaded connection or sliding connection. Correspondingly, the first connecting component 1 and the second connecting component 2 are fixedly connected to any position of the supporting component 3 after movement, which is achieved by fasteners such as threaded fitting or latches.

[0056] In this embodiment, it is preferred that both the first connecting component 1 and the second connecting component 2 can move along the length direction of the supporting component 3 and be fixedly connected to any position of the supporting component 3 after the movement. Furthermore, in order to improve the convenience of movement of the first connecting component 1 and the second connecting component 2 on the supporting component 3, as shown in FIG. Figure 1 As shown, the preferred supporting assembly 3 of this embodiment includes a screw rod 31 and a nut 32 , the nut 32 is threadedly connected to the screw rod 31 , and the first connecting assembly 1 and the second connecting assembly 2 are respectively fixed on both sides of the nut 32 .

[0057] In this embodiment, the first connecting component 1, the second connecting component 2 and the nut 32 can all be made of metal or alloy materials, such as galvanized steel.

[0058] Furthermore, the first connecting rod 10 in the first connecting assembly 1 and the second connecting rod 20 in the second connecting assembly 2 can both be made of angle steel. To prevent the first connecting member 11 and the second connecting member 21 from contaminating the pipeline 4, in this embodiment, the first connecting member 11 and the second connecting member 21 are preferably made of stainless steel. At this time, the first connecting member 11 can be welded to one end of the first connecting rod 10, and the second connecting member 21 can be welded to one end of the second connecting rod 20.

[0059] To ensure the installation stability of the first connecting assembly 1 and the second connecting assembly 2, one end of the first connecting rod 10 away from the first connecting member 11 and one end of the second connecting rod 20 away from the second connecting member 21 can be fixed to both sides of the nut 32 by welding.

[0060] In addition, if Figure 1 As shown, the support assembly 3 may further include a base 33, which is fixed to the bottom of the screw rod 31. The base 33 is used to increase the bottom area of ​​the support assembly 3, thereby improving the stability of the support assembly 3 on an object such as the ground.

[0061] Furthermore, the support assembly 3 may also include a sleeve 34, the inner wall of the sleeve 34 is provided with an internal thread adapted to the screw 31, the sleeve 34 is threadedly connected to the top of the screw 31, and the support portion 30 is fixed to the top of the sleeve 34. The sleeve 34 can drive the support portion 30 to rotate relative to the screw 31, which can not only further adjust the height of the support portion 30 from the ground, but also adjust the angle of the support portion 30 on the horizontal plane, so that the support portion 30 can better adapt to the position of the pipeline 4, effectively improving the convenience of use of the support tooling for pipeline welding.

[0062] like Figure 1 As shown, the support portion 30 is a plate-shaped structure with an arc surface. Compared with a straight plate-shaped structure, the support portion 30 can effectively improve the adaptability of the support portion 30 to the shape of the pipe 4, thereby effectively improving the support stability of the support portion 30 on the pipe 4.

[0063] To sum up, the support tooling for pipeline welding provided in this embodiment cooperates with each other through the support part 30, the first connecting component 1 and the second connecting component 2. During the welding process of the spray pipe and the spray head in the containment spray system, the process interruption caused by the cooling of the spray pipe and the spray head can be avoided, the welding efficiency can be improved, and at the same time, the deformation probability of the spray pipe can be reduced, the rework investment after welding can be avoided, and the investment of time and labor costs can be saved.

[0064] It has been verified through actual practice that when welding a single sprinkler pipe with 6-20 sprinkler heads preset, according to the existing welding method, the next sprinkler head can only be welded after the previous sprinkler head has cooled for half an hour. The total welding operation takes at least 3-10 working hours, which is extremely inefficient. However, when welding using the pipeline welding support fixture provided in this embodiment, the next sprinkler head can be welded immediately after the previous sprinkler head is welded. The welding operation of all sprinkler heads of a single sprinkler pipe can be completed within half an hour. In addition, after welding the sprinkler pipe and the sprinkler head using the pipeline welding support fixture provided in this embodiment, the deformation of the sprinkler pipe can be controlled within 0.3°, which can ensure the welding quality.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention 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 invention.

Claims

1. A support tool for pipeline welding, characterized in that: It comprises a first connecting component (1), a second connecting component (2) and a supporting component (3); The first connection assembly (1) and the second connection assembly (2) are respectively installed on two sides of the support assembly (3); the support assembly (3) is provided with a support portion (30); the support portion (30) of the support assembly (3) is used to abut against the bottom of the pipe body at the welding position of the pipe (4) to support the pipe (4); The first connection assembly (1) and the second connection assembly (2) are used to respectively connect to the pipe body on both sides of the welding point of the pipeline (4) to apply a downward or oblique downward pulling force to the pipeline (4).

2. The support tool for pipeline welding according to claim 1, characterized in that: The first connecting assembly (1) comprises a first connecting rod (10) and a first connecting member (11), and the second connecting assembly (2) comprises a second connecting rod (20) and a second connecting member (21); The first connecting rod (10) and the second connecting rod (20) are respectively connected to a position of the supporting assembly (3) lower than the supporting portion (30), and the first connecting member (11) is fixed to the first connecting rod (10), and the second connecting member (21) is fixed to the second connecting rod (20), and the first connecting member (11) and the second connecting member (21) are used to be respectively connected to the pipe body on both sides of the welding point of the pipe (4).

3. The support tool for pipeline welding according to claim 2, characterized in that: The first connecting rod (10) and the second connecting rod (20) are both in the shape of straight rods, and the first connecting rod (10) and the central axis of the supporting assembly (3) are arranged at an acute angle, so that the connection between the first connecting member (11) and the first connecting rod (10) is higher than the connection between the first connecting rod (10) and the supporting assembly (3); The second connecting rod (20) is arranged at an acute angle with the central axis of the supporting assembly (3), so that the connection between the second connecting member (21) and the second connecting rod (20) is higher than the connection between the second connecting rod (20) and the supporting assembly (3).

4. The support tool for pipeline welding according to claim 3, characterized in that: One end of the first connecting rod (10) and one end of the second connecting rod (20) are respectively connected to the supporting assembly (3), the first connecting member (11) is fixed to the other end of the first connecting rod (10), and the second connecting member (21) is fixed to the other end of the second connecting rod (20).

5. The support tool for pipeline welding according to claim 3 or 4, characterized in that: The first connecting member (11) and the second connecting member (21) are both hooks bent downward.

6. The support tool for pipeline welding according to claim 5, characterized in that: A line connecting the connection point between the first connecting rod (10) and the supporting assembly (3) and a line connecting the second connecting rod (20) and the supporting assembly (3) is perpendicular to the central axis of the pipeline (4), and the midpoint of the line is a symmetry point, and the first connecting assembly (1) and the second connecting assembly (2) are symmetrical about the center of the symmetry point.

7. The support tool for pipeline welding according to any one of claims 2 to 4, characterized in that: The connection between the first connecting member (11) and the first connecting rod (10) and the connection between the second connecting member (21) and the second connecting rod (20) are located on the same horizontal plane, and the horizontal and vertical spacing between the connection between the first connecting member (11) and the first connecting rod (10) and the central axis of the support assembly (3) is equal to the horizontal and vertical spacing between the connection between the second connecting member (21) and the second connecting rod (20) and the central axis of the support assembly (3).

8. The support tool for pipeline welding according to any one of claims 1 to 4, characterized in that: The first connecting component (1) and the second connecting component (2) are both telescopic structures, and / or the first connecting component (1) and the second connecting component (2) are both capable of moving along the length direction of the supporting component (3) and being fixedly connected to any position of the supporting component (3) after movement.

9. The support tool for pipeline welding according to claim 8, characterized in that: The support assembly (3) comprises a screw rod (31) and a nut (32), wherein the nut (32) is threadedly connected to the screw rod (31), and the first connecting assembly (1) and the second connecting assembly (2) are respectively fixed on two sides of the nut (32).

10. The support tool for pipeline welding according to any one of claims 1 to 4, characterized in that: The support portion (30) is a plate-shaped structure with a curved surface.

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