Lining structure for pipeline weld joint welding

Abstract

The utility model relates to the technical field of pipeline weld joint welding, in particular to a lining structure for pipeline weld joint welding. A lining structure for pipeline weld joint welding comprises a pipeline plugging air bag and a woven mesh pipe, the woven mesh pipe wraps the outer side of the pipeline plugging air bag, the pipeline plugging air bag is used for being filled with gas, and the woven mesh pipe is arranged in a telescopic mode. The method has the following beneficial effects that pipeline welding can be carried out without argon inflation protection in the stainless alloy steel pipeline welding seam, heat generated by welding is reduced, heating is uniform, the interlayer temperature is reduced, welding deformation is controlled, welding seam low-lying or internal weld beading generation is reduced, the welding seam quality is improved, the welding speed is increased, and the production cost is reduced. The welding inflation construction cost is reduced, the requirement for controlling the through flow of large-caliber and small-caliber pipelines is met, and running of pipeline fluid is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline weld welding, and particularly relates to an inner lining structure for pipeline weld welding. BACKGROUND

[0002] The weld welding of a process pipeline is currently basically manually operated by a welder, and has the problems of low automation degree, high construction difficulty, high requirement for welder skills, low welding efficiency, high construction cost, easy production of internal welding beads, and the like.

[0003] The welding beads are produced, which affects the weld quality, welding speed, pipeline inner diameter flow rate and pipeline fluid operation. CONTENT OF THE UTILITY MODEL

[0004] In order to reduce the production of welding beads, improve the weld quality, improve the welding speed, improve the pipeline inner diameter flow rate and ensure the pipeline fluid operation, the present application provides an inner lining structure for pipeline weld welding.

[0005] The inner lining structure for pipeline weld welding provided by the present application adopts the following technical scheme: the inner lining structure comprises a pipeline plugging air bag and a woven mesh pipe, the woven mesh pipe is wrapped outside the pipeline plugging air bag, the pipeline plugging air bag is used for filling gas, and the woven mesh pipe is telescopically arranged.

[0006] After the woven mesh pipe is wrapped outside the pipeline plugging air bag and pushed to the pipeline weld, the woven mesh pipe is used for protecting the air bag due to high-temperature resistance; the pipeline plugging air bag can be uniformly inflated to compress air, so that the woven mesh pipe wrapped in the pipeline plugging air bag is expanded to be close to the weld, plays a role of a welding gasket, meets the welding requirement, especially does not need to perform internal argon inflation protection on the stainless steel pipeline weld, can perform pipeline welding, reduces the heat generated by welding, uniformly receives heat, reduces the interlayer temperature, controls welding deformation, reduces the production of weld low or internal welding beads, improves the weld quality, improves the welding speed, reduces the welding inflation construction cost, meets the requirement of controlling the flow rate of large and small diameter pipelines and ensures the pipeline fluid operation.

[0007] Preferably, the inner lining structure further comprises a guide support, the guide support is arranged in the pipeline plugging air bag, and the guide support is used for supporting the pipeline plugging air bag and abutting against the inner wall of the pipeline.

[0008] Due to the existence of the behavior of pushing the pipeline sealing air bag from the pipeline opening to the pipeline weld, the pipeline sealing air bag or the woven mesh tube is more prone to wear and tear due to contact and friction with the inner wall of the pipeline. By adopting the technical scheme, a guide bracket is added, the pipeline sealing air bag is not inflated during movement, the pipeline sealing air bag and the pipeline inside are in contact, and the guide bracket is used instead of abutting against the inner wall of the pipeline, thereby reducing the wear and tear of the pipeline sealing air bag and the woven mesh tube.

[0009] Preferably, the guide bracket comprises an intermediate rod and an abutting rod, the intermediate rod is arranged in the pipeline sealing air bag along the axial direction of the pipeline, the intermediate rod and the pipeline sealing air bag are connected through a sealing element, one end of the abutting rod is connected with the intermediate rod, and the other end of the abutting rod is used for abutting against the inner wall of the pipeline.

[0010] By adopting the technical scheme, the sealing performance between the intermediate rod and the pipeline sealing air bag is ensured, one end of the abutting rod is connected with the intermediate rod, and the other end abuts against the inner wall of the pipeline, thereby providing a stable support point.

[0011] Preferably, the abutting rod comprises an abutting inner rod and an abutting outer rod, one end of the abutting outer rod is connected with the intermediate rod, the other end of the abutting outer rod is sleeved on the abutting inner rod, the abutting inner rod is axially positionable and reciprocally slidable in the abutting outer rod, and one end of the abutting inner rod away from the abutting outer rod is used for abutting against the inner wall of the pipeline.

[0012] By adopting the technical scheme, the abutting inner rod is axially positionable and reciprocally slidable in the abutting outer rod, the length of the abutting rod can be adjusted according to the actual size of the pipeline, and the abutting rod is better adapted to different diameters of the pipeline.

[0013] Preferably, one end of the abutting inner rod away from the abutting outer rod is provided with an abutting arc plate, the length direction of the abutting arc plate is arranged along the axial direction of the pipeline, the inner arc surface of the abutting arc plate is connected with the abutting inner rod, and the outer arc surface of the abutting arc plate is used for abutting against the inner wall of the pipeline.

[0014] By adopting the technical scheme, the outer arc surface of the abutting arc plate is used for abutting against the inner wall of the pipeline, the contact area is increased, and the support effect is improved.

[0015] Preferably, a plurality of balls are arranged on the abutting arc plate, the balls are embedded on the outer arc surface of the abutting arc plate, and the plurality of balls are distributed on the abutting arc plate.

[0016] By adopting the technical scheme, the balls reduce the frictional resistance when the abutting arc plate contacts the inner wall of the pipeline, the abutting rod moves more smoothly, and wear or displacement caused by excessive friction is avoided.

[0017] Preferably, the abutting inner rod is provided with elastic positioning members embedded in the rod wall of the abutting inner rod in the radial direction of the abutting inner rod, and the abutting outer rod is provided with a plurality of positioning holes through which the elastic positioning members partially pass, the positioning holes being equidistantly and axially spaced apart on the abutting outer rod.

[0018] By adopting the above technical solution, when the abutting inner rod axially slides along the abutting outer rod, the elastic positioning members and the positioning holes are matched, the elastic positioning members partially pass through the positioning holes, and the length adjustment of the abutting rod is realized.

[0019] Preferably, the elastic positioning member comprises a positioning cone block and a positioning spring, the rod wall of the abutting inner rod is provided with an embedding groove for embedding the elastic positioning member in the radial direction of the abutting inner rod, the positioning spring is embedded in the embedding groove, one end of the positioning spring is connected with the groove bottom of the embedding groove, the other end of the positioning spring is connected with the positioning cone block, and the positioning cone block is partially embedded in the embedding groove and is used for slidingly embedding into the positioning hole.

[0020] By adopting the above technical solution, when the abutting inner rod axially and positionally reciprocally slides along the abutting outer rod, the positioning cone block is completely embedded in the embedding groove, at this time, the positioning spring is in a compressed state; when the positioning cone block is matched with the positioning hole, the elastic force of the positioning spring makes the positioning cone block partially pass through the positioning hole, and the length adjustment of the abutting rod is completed.

[0021] In summary, the present application has at least one of the following beneficial technical effects:

[0022] 1. The pipe plugging air bag is inflated with compressed air in a uniform manner, the woven mesh tube wrapped around the pipe plugging air bag is expanded to be close to the weld, and the welded gasket is formed, so that the welding requirement is met.

[0023] 2. The heat generated by welding is reduced, the heat is uniformly received, the welding deformation is controlled, the generation of low-lying or internal welding bumps is reduced, the welding quality is improved, the welding speed is increased, and the welding inflation construction cost is reduced.

[0024] 3. The abutting rod is replaced by the guide support to abut against the inner wall of the pipe, and the abrasion of the pipe plugging air bag and the woven mesh tube is reduced.

[0025] 4. The length of the abutting rod can be adjusted according to the actual size of the pipe, so that the abutting rod is better adapted to different pipe diameters. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0027] Figure 2 is a schematic diagram of the overall structure of embodiment 2 of the present application;

[0028] Figure 3 is Figure 2 a partial enlarged schematic view of part A in figure 1;

[0029] Figure 4 is a sectional view schematic diagram of part structure of embodiment 2 of the present application.

[0030] Explanation of reference numerals: 110, pipeline plugging air bag; 111, air bag body; 112, air pipe; 120, woven mesh pipe; 130, guide support; 131, middle rod; 132, abutting rod; 133, sealing element; 134, abutting inner rod; 135, abutting outer rod; 140, elastic positioning element; 141, positioning cone block; 142, positioning spring; 143, embedded groove; 144, positioning hole; 150, abutting arc plate; 151, ball. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below with reference to the accompanying drawings.

[0032] The present application discloses an inner lining structure for pipeline weld welding, which is used to reduce the generation of welding bumps, improve the weld quality, increase the welding speed, reduce the welding construction cost, improve the pipeline inner diameter flow rate and ensure the pipeline fluid operation.

[0033] Embodiment 1

[0034] Reference Figure 1 An inner lining structure for pipeline weld welding, comprising a pipeline plugging air bag 110 and a woven mesh pipe 120, wherein the woven mesh pipe 120 is wrapped outside the pipeline plugging air bag 110, the pipeline plugging air bag 110 is used to fill gas, the woven mesh pipe 120 is arranged in an extendable manner, after the woven mesh pipe 120 is wrapped outside the pipeline plugging air bag 110, it is pushed to the pipeline weld, the woven mesh pipe 120 is used to protect the air bag due to its high temperature resistance; the pipeline air bag can be inflated in a non-contained manner, so that the woven mesh pipe 120 wrapped in the pipeline plugging air bag 110 is inflated to be close to the weld, the welding requirement is met, the pipeline is welded, the heat generated by welding is reduced, the heat is evenly distributed, the interlayer temperature is reduced, the welding deformation is controlled, the generation of welding bumps is reduced, the weld quality is improved, the welding speed is increased, the control of pipeline flow rate is achieved and the pipeline fluid operation is ensured.

[0035] Specifically, the pipeline plugging air bag 110 comprises an air bag body 111 and an air pipe 112, the pipeline plugging air bag 110 can be inflated through the air pipe 112 by using an air pump, a rubber tube, a gas cylinder and other various ways, the air bag body 111 is made of flexible material, which can be polyurethane rubber or silicone, etc., and has good elasticity and heat resistance.

[0036] The implementation principle of the embodiment 1 of the present application is that the pipe plugging air bag 110 can be inflated by using air cylinders, leather tigers, air pumps and other various ways, so that the telescopic pure copper woven mesh pipe 120 is inflated close to the weld, the welding requirements are met, the pipe welding is carried out, the weld quality is guaranteed, the internal welding tumor is controlled, the requirements of controlling the pipe flow rate are met, the operation time is short, the use effect is good, and the pipe can be repeatedly used; the welding heat is reduced, the heating is uniform, the interlayer temperature is reduced, the welding deformation is controlled, and the welding quality is improved.

[0037] Embodiment 2

[0038] Reference Figures 2-4 The difference between the embodiment and the above-mentioned embodiments is that the guiding support 130 is further included, and the positioning accuracy and stability of the inner lining structure are further improved. In the embodiment, the guiding support 130 includes the middle rod 131 and the abutting rod 132. The middle rod 131 is arranged in the pipe plugging air bag 110 along the pipe axial direction. The middle rod 131 and the pipe plugging air bag 110 are connected through the sealing element 133. The sealing element 133 can be an O-ring or a sealing gasket, so as to ensure the sealing performance between the middle rod 131 and the air bag. One end of the abutting rod 132 is connected with the middle rod 131, and the other end of the abutting rod 132 is used for abutting against the inner wall of the pipe. The abutting rod 132 is provided with a plurality of abutting rods 132. Among them, two abutting rods 132 form a group, and the two abutting rods 132 in each group are arranged on the middle rod 131 in the axial direction. There are four groups of abutting rods 132. Two groups of abutting rods 132 form an abutting structure, and the two abutting structures are arranged at two ends of the pipe plugging air bag 110 in the axial direction. The two groups of abutting rods 132 of one abutting structure are symmetrically arranged on both sides of the middle rod 131 with the middle rod 131 as the symmetric axis.

[0039] Specifically, the abutting rod 132 includes the abutting inner rod 134 and the abutting outer rod 135. One end of the abutting outer rod 135 is connected with the middle rod 131, and the other end of the abutting outer rod 135 is sleeved on the abutting inner rod 134. The abutting inner rod 134 is connected with the abutting outer rod 135 in the axial direction and can be positioned and reciprocally slid. One end of the abutting inner rod 134 away from the abutting outer rod 135 is used for abutting against the inner wall of the pipe. The abutting inner rod 134 is connected with the abutting outer rod 135 in the axial direction and can be positioned and reciprocally slid. The length of the abutting rod 132 can be adjusted according to the actual size of the pipe, so that the abutting rod 132 is better adapted to different pipe diameters.

[0040] The abutting inner rod 134 is provided with elastic positioning members 140, the elastic positioning members 140 are embedded on the rod wall of the abutting inner rod 134 in the radial direction of the abutting inner rod 134, the abutting outer rod 135 is provided with a plurality of positioning holes 144 for the elastic positioning members 140 to partially pass through, the plurality of positioning holes 144 are equidistantly and axially arranged on the abutting outer rod 135, the elastic positioning member 140 comprises a positioning cone block 141 and a positioning spring 142, the rod wall of the abutting inner rod 134 is provided with an embedding groove 143 for the elastic positioning member 140 in the radial direction of the abutting inner rod 134, the positioning spring 142 is embedded in the embedding groove 143, one end of the positioning spring 142 is connected with the groove bottom of the embedding groove 143, the other end of the positioning spring 142 is connected with the positioning cone block 141, and the positioning cone block 141 is partially embedded in the embedding groove 143, and the positioning cone block 141 is used for being slidably embedded in the positioning hole 144.

[0041] The abutting inner rod 134 is provided with an abutting arc plate 150 at one end away from the abutting outer rod 135, the length direction of the abutting arc plate 150 is arranged in the axial direction of the pipeline, the inner arc surface of the abutting arc plate 150 is connected with the abutting inner rod 134, and the outer arc surface of the abutting arc plate 150 is used for abutting against the inner wall of the pipeline, thereby increasing the contact area and improving the supporting effect; the abutting arc plate 150 is provided with a plurality of rolling balls 151, the rolling balls 151 are embedded on the outer arc surface of the abutting arc plate 150, and the plurality of rolling balls 151 are uniformly distributed on the abutting arc plate 150; the rolling balls 151 are used for reducing the frictional resistance when the abutting arc plate 150 contacts the inner wall of the pipeline, so that the abutting rod 132 is more smooth during movement, and abrasion or displacement caused by excessive friction is avoided.

[0042] The implementation principle of the inner lining structure for pipeline weld welding in the embodiment of the application is as follows: due to the behavior of pushing the pipeline sealing air bag 110 from the pipeline opening to the pipeline weld, the pipeline sealing air bag 110 or the woven mesh pipe 120 is more likely to be abraded by contacting and rubbing the inner wall of the pipeline, the guide support 130 is additionally arranged, the pipeline sealing air bag 110 is not inflated during movement, the pipeline sealing air bag 110 contacts the inner wall of the pipeline, and the guide support 130 is used instead of abutting against the inner wall of the pipeline, thereby reducing the abrasion of the pipeline sealing air bag 110 and the woven mesh pipe 120.

[0043] The embodiments of the specific embodiment are the preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A lining structure for pipe weld welding, characterized by: The utility model provides a pipeline plugging air bag (110) and braided mesh pipe (120) are included, braided mesh pipe (120) is covered outside pipeline plugging air bag (110), pipeline plugging air bag (110) is used to fill gas, braided mesh pipe (120) can be telescopic arrangement.

2. A lining structure for pipe weld welding according to claim 1, characterized in that: Also include guiding support (130), guiding support (130) is worn in pipeline plugging air bag (110) and guiding support (130) is used to support pipeline plugging air bag (110) and is in contact with the inner wall of pipeline.

3. A lining structure for pipe weld welding according to claim 2, characterized in that: The guiding support (130) includes an intermediate rod (131) and an abutting rod (132), the intermediate rod (131) is axially arranged in the pipeline plugging air bag (110), the intermediate rod (131) and the pipeline plugging air bag (110) are connected by a sealing element (133), one end of the abutting rod (132) is connected to the intermediate rod (131), and the other end of the abutting rod (132) is used to abut against the inner wall of the pipeline.

4. A lining structure for pipe weld welding according to claim 3, characterized in that: The abutting rod (132) includes an abutting inner rod (134) and an abutting outer rod (135), one end of the abutting outer rod (135) is connected to the intermediate rod (131), the other end of the abutting outer rod (135) is sleeved on the abutting inner rod (134), the abutting inner rod (134) is axially and reciprocally slidably connected to the abutting outer rod (135) along the abutting outer rod (135), and one end of the abutting inner rod (134) away from the abutting outer rod (135) is used to abut against the inner wall of the pipeline.

5. A lining structure for pipe weld welding according to claim 4, characterized in that: One end of the abutting inner rod (134) away from the abutting outer rod (135) is provided with an abutting arc plate (150), the length direction of the abutting arc plate (150) is arranged along the axial direction of the pipeline, the inner arc surface of the abutting arc plate (150) is connected to the abutting inner rod (134), and the outer arc surface of the abutting arc plate (150) is used to abut against the inner wall of the pipeline.

6. A lining structure for pipe weld welding according to claim 5, characterized in that: A plurality of rolling balls (151) are arranged on the abutting arc plate (150), the rolling balls (151) are embedded on the outer arc surface of the abutting arc plate (150), and the plurality of rolling balls (151) are uniformly distributed on the abutting arc plate (150).

7. A lining structure for pipe weld welding according to claim 4, characterized in that: The abutting inner rod (134) is provided with an elastic positioning element (140), the elastic positioning element (140) is embedded on the rod wall of the abutting inner rod (134) along the radial direction of the abutting inner rod (134), a plurality of positioning holes (144) are formed in the abutting outer rod (135) and used for allowing the elastic positioning element (140) to partially pass through, and the plurality of positioning holes (144) are equidistantly and spaced apart along the axial direction of the abutting outer rod (135).

8. A lining structure for pipe weld welding according to claim 7, characterized in that: The elastic positioning member (140) comprises a positioning taper block (141) and a positioning spring (142), a bar wall of the abutting inner rod (134) is provided with an embedding groove (143) for embedding the elastic positioning member (140) along the abutting inner rod (134) in a radial direction, the positioning spring (142) is embedded in the embedding groove (143), one end of the positioning spring (142) is connected with a groove bottom of the embedding groove (143), the other end of the positioning spring (142) is connected with the positioning taper block (141), and the positioning taper block (141) is partially embedded in the embedding groove (143). The positioning taper block (141) is used for slidingly embedding into the positioning hole (144).

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