Large-diameter pipeline welding auxiliary alignment tool

Abstract

The utility model discloses a large-diameter pipeline welding auxiliary alignment tool which comprises an annular body arranged in an annular shape and used for being arranged outside a pipeline to be welded in a sleeving mode, a plurality of hydraulic adjusting assemblies arranged on the annular body in a telescopic mode in the radial direction and a hydraulic driving assembly connected with the hydraulic adjusting assemblies. The multiple hydraulic adjusting assemblies are arranged in the circumferential direction of the annular body at intervals, and the hydraulic driving assembly is connected with the multiple hydraulic adjusting assemblies. According to the scheme, through cooperative cooperation of the annular body, the hydraulic driving assembly and the hydraulic adjusting assembly, precise alignment of pipe openings before pipeline welding is achieved, compared with the prior art, hydraulic pressure provided by the hydraulic driving assembly is far larger than acting force of manual adjustment, and therefore the auxiliary alignment device is suitable for auxiliary alignment of large-diameter pipeline welding; and auxiliary alignment of welding of pipelines with different pipe diameters can be achieved by adjusting the telescopic amount of the telescopic end of the hydraulic adjusting assembly, practicability is high, and the device is suitable for wide application and popularization.

Description

Technical Field

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

[0002] The main purpose of pipeline welding is to connect pipelines of different sections together to form a continuous fluid delivery channel and ensure the continuity and sealing of the fluid delivery channel, so as to transport fluid media such as water, oil, and gas. At present, in the process of pipeline welding, auxiliary alignment tools are usually used to align the pipe openings of the two pipes to improve welding accuracy, simplify the operation process, reduce errors and defects, and improve safety.

[0003] For example, Chinese utility model patent CN200967180Y discloses a pipe external aligner, which adopts a closed circular ring frame, and is evenly distributed around the circumference of the circular ring frame. A plurality of cantilever beam adjustment mechanisms composed of a cantilever beam and left and right adjustment screw assemblies installed on the cantilever beam are arranged; manual adjustment can be used to achieve precise adjustment and correction of the local misalignment of the pipe mouth, eliminate the misalignment of the two pipe mouths, and meet the technical requirements of aligning the pipe mouths before pipeline welding.

[0004] However, when welding large-diameter pipes, the pipe diameter of the large-diameter pipe is usually not less than 1500mm, and a single section of the large-diameter pipe generally weighs more than 6 tons. The above-mentioned pipe external alignment device achieves pipe mouth alignment by manual adjustment. The manual adjustment force is limited, which is obviously not suitable for pipe mouth alignment during large-diameter pipe welding. In addition, since the large-diameter pipe is too heavy and the pipe mouth diameter is large, if mechanical equipment such as a crane is used, local fine-tuning cannot be performed, so that the pipe mouth cannot be accurately aligned, which makes it easy to misalign during welding. Mechanical equipment such as cranes are prone to cause personal injury accidents during operation, and the safety is low. Utility Model Content

[0005] The utility model provides a large-diameter pipeline welding auxiliary alignment tool to solve the technical problem that the existing pipeline welding auxiliary alignment tool is not suitable for pipe mouth alignment during large-diameter pipeline welding.

[0006] According to one aspect of the utility model, there is provided a large-diameter pipeline welding auxiliary alignment tool, comprising an annular main body arranged in an annular shape for being sleeved on the outside of the pipeline to be welded, a hydraulic adjustment component arranged radially and telescopically on the annular main body for being arranged opposite to the pipe mouth of the pipeline to be welded so that the telescopic end can be extended to press the pipeline or contracted and reset under the drive of hydraulic force, and a hydraulic drive component connected to the hydraulic adjustment component for providing hydraulic force to drive the telescopic end of the hydraulic adjustment component to extend and retract. A plurality of hydraulic adjustment components are provided, and the plurality of hydraulic adjustment components are arranged at intervals along the circumference of the annular main body, and the hydraulic drive components are respectively connected to the plurality of hydraulic adjustment components.

[0007] As a further improvement of the above technical solution:

[0008] Furthermore, a pressing portion extending outward along the axial direction is arranged on the telescopic end of the hydraulic adjustment assembly.

[0009] Furthermore, the pressing end surface of the pressing portion is arranged in an arc shape.

[0010] Furthermore, an elastic pad is arranged on the pressing end surface of the pressing portion.

[0011] Furthermore, the annular body includes two semicircular rings with the same radius and connecting pieces detachably connected to opposite ends of the two semicircular rings for forming a closed circular ring.

[0012] Furthermore, the semicircular ring includes two semicircular tubes arranged at intervals along the axial direction and connecting parts respectively connected to the two semicircular tubes along the axial direction. There are multiple connecting parts, and the multiple connecting parts are arranged at intervals along the circumference of the semicircular ring. The fixed end of the hydraulic adjustment assembly is arranged on the connecting part.

[0013] Furthermore, the connecting piece includes two connecting blocks arranged on the circumferential ends of the semicircular tube of one of the semicircular rings, and the connecting blocks on the circumferential ends of the semicircular tube extend circumferentially and enclose a receiving groove for receiving the semicircular tube of the other semicircular ring. The connecting piece also includes a connecting screw axially passed through the connecting block and the receiving groove and a locking nut threadedly connected to the connecting screw.

[0014] Furthermore, the semicircular ring also includes a supporting pipe which is arranged obliquely and is respectively connected to the fixed end and the connecting part of the hydraulic adjustment assembly.

[0015] Furthermore, two support tubes are provided, and the two support tubes are symmetrically arranged on both axial sides of the fixed end of the hydraulic adjustment assembly.

[0016] Furthermore, the hydraulic drive assembly includes a hydraulic oil tank, a hydraulic pump connected to the hydraulic oil tank, and hydraulic pipes connected to the hydraulic pump and the plurality of hydraulic adjustment assemblies, respectively.

[0017] The utility model has the following beneficial effects:

[0018] The utility model discloses a large-diameter pipeline welding auxiliary alignment tool. Before pipeline welding, the annular main body is firstly sleeved on the pipeline to be welded. Then, according to the docking condition of the two pipeline orifices, the hydraulic driving component provides hydraulic pressure to the hydraulic adjusting component, so that the telescopic end of any hydraulic adjusting component arranged at intervals along the circumference of the annular main body is extended to perform local fine adjustment on the pipeline, or the telescopic ends of multiple hydraulic adjusting components are extended to press the pipeline at the same time to perform global fine adjustment on the pipeline, thereby comprehensively eliminating the error between the two pipeline orifices, so that the two pipeline orifices are accurately aligned, and the relevant requirements of pipeline welding are met. The requirements are then placed on the pipe mouth for spot welding and fixation, and the telescopic end of the hydraulic adjustment component can be driven to shrink by the hydraulic pressure, so that the next step of welding can be carried out. This solution realizes precise alignment of the pipe mouth before pipe welding through the coordinated cooperation of the annular main body, the hydraulic drive component and the hydraulic adjustment component. Compared with the prior art, the hydraulic pressure that can be provided by the hydraulic drive component is much greater than the force of manual adjustment, and is therefore suitable for auxiliary alignment of large-diameter pipe welding, and auxiliary alignment of pipe welding of different diameters can be achieved by adjusting the telescopic amount of the telescopic end of the hydraulic adjustment component, which is highly practical and suitable for wide promotion and utilization.

[0019] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 This is a structural schematic diagram of a large-diameter pipeline welding auxiliary alignment tooling device according to a preferred embodiment of the utility model;

[0022] Figure 2 This is a structural schematic diagram of a large-diameter pipeline welding auxiliary alignment tooling device according to a preferred embodiment of the utility model;

[0023] Figure 3 This is a structural schematic diagram of a large-diameter pipeline welding auxiliary alignment tooling device according to a preferred embodiment of the utility model;

[0024] Figure 4 It is a structural schematic diagram of a large-diameter pipeline welding auxiliary alignment tooling according to a preferred embodiment of the utility model.

[0025] Legend:

[0026] 100, annular body; 110, semicircular ring; 111, semicircular tube; 112, connecting part; 113, supporting tube; 120, connecting piece; 121, connecting block; 122, connecting screw; 200, hydraulic adjustment assembly; 210, pressing part; 300, hydraulic drive assembly; 310, hydraulic tube. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0028] Figure 1 This is a structural schematic diagram of a large-diameter pipeline welding auxiliary alignment tooling device according to a preferred embodiment of the utility model; Figure 2 This is a structural schematic diagram of a large-diameter pipeline welding auxiliary alignment tooling device according to a preferred embodiment of the utility model; Figure 3 This is a structural schematic diagram of a large-diameter pipeline welding auxiliary alignment tooling device according to a preferred embodiment of the utility model; Figure 4 It is a structural schematic diagram of a large-diameter pipeline welding auxiliary alignment tooling according to a preferred embodiment of the utility model.

[0029] like Figure 1 and Figure 2As shown, the large-diameter pipe welding auxiliary alignment tool of this embodiment includes an annular main body 100 arranged in an annular shape and used to be sleeved on the outside of the pipe to be welded, a hydraulic adjustment component 200 arranged radially and telescopically on the annular main body 100 and used to be arranged opposite to the pipe mouth of the pipe to be welded so that the telescopic end can be extended to press the pipe or retracted and reset under the drive of hydraulic pressure, and a hydraulic drive component 300 connected to the hydraulic adjustment component 200 and used to provide hydraulic pressure to drive the telescopic end of the hydraulic adjustment component 200 to extend and retract. The hydraulic adjustment component 200 is provided with a plurality of hydraulic adjustment components 200, and the plurality of hydraulic adjustment components 200 are arranged at intervals along the circumference of the annular main body 100, and the hydraulic drive components 300 are respectively connected to the plurality of hydraulic adjustment components 200. Specifically, the auxiliary alignment tool for large-diameter pipe welding of the utility model, before pipe welding, firstly sets the annular main body 100 on the outside of the pipe to be welded, and then according to the docking condition of the two pipe orifices, the hydraulic drive component 300 provides hydraulic pressure to the hydraulic adjustment component 200, so that the telescopic end of any hydraulic adjustment component 200 arranged at intervals along the circumference of the annular main body 100 is extended to perform local fine adjustment on the pipe, or the telescopic ends of multiple hydraulic adjustment components 200 are extended to press the pipe at the same time to perform global fine adjustment on the pipe, thereby comprehensively eliminating the error between the two pipe orifices, so that the two pipe orifices are accurately aligned, and the pipe welding is satisfied. Relevant requirements, and then the pipe mouth is spot welded and fixed, and the telescopic end of the hydraulic adjustment component 200 can be driven to shrink by hydraulic pressure, and then the next step of welding can be carried out. This solution realizes the precise alignment of the pipe mouth before pipe welding through the coordinated cooperation of the annular body 100, the hydraulic drive component 300 and the hydraulic adjustment component 200. Compared with the prior art, the hydraulic pressure that the hydraulic drive component 300 can provide is much greater than the force of manual adjustment, so it is suitable for auxiliary alignment of large-diameter pipe welding, and the auxiliary alignment of pipe welding of different pipe diameters can be achieved by adjusting the telescopic amount of the telescopic end of the hydraulic adjustment component 200. It is highly practical and suitable for wide promotion and utilization. Optionally, the hydraulic adjustment component 200 is a hydraulic jack. It should be understood that the specific structure of the hydraulic jack belongs to the well-known technology of those skilled in the art, and will not be repeated here. It should be understood that the radial direction in this embodiment refers to the radial direction of the annular body 100.

[0030] like Figure 2 and Figure 3As shown, in this embodiment, a pressing portion 210 extending outwardly in the axial direction is arranged on the telescopic end of the hydraulic adjustment component 200. Specifically, the telescopic end of the hydraulic adjustment component 200 presses the pipeline through the pressing portion 210, and the pressing portion 210 extends outwardly in the axial direction of the annular body 100, that is, the pressing area is increased, thereby reducing the pressure, improving the stability and safety of the telescopic end of the hydraulic adjustment component 200 when extending and pressing, and also ensuring that the pressing portion 210 can press on the outer walls of the two pipelines at the same time, thereby ensuring the alignment accuracy. It should be understood that the axial direction in this embodiment refers to the axial direction of the annular body 100.

[0031] like Figure 2 and Figure 3 As shown, in this embodiment, the pressing end surface of the pressing portion 210 is arranged in an arc shape. Specifically, by making the pressing end surface of the pressing portion 210 arranged in an arc shape, the pressing end surface of the pressing portion 210 is as close to the outer wall of the pipe as possible, thereby increasing the pressing area of ​​the hydraulic adjustment assembly 200 to reduce the pressure.

[0032] In this embodiment, an elastic pad is arranged on the pressing end surface of the pressing portion 210. Specifically, the elastic pad avoids the rigid contact between the pressing portion 210 and the pipeline, buffers the interaction force between the pressing portion 210 and the pipeline, avoids scratches and damage, and prolongs the service life of the hydraulic adjustment assembly 200. The elastic pad has a certain elastic deformation ability to adapt to the outer wall surface of the pipeline, thereby ensuring the uniformity and stability of the pressing effect. Optionally, the elastic pad is a rubber pad.

[0033] like Figure 2 and Figure 3 As shown, in this embodiment, the annular body 100 includes two semicircular rings 110 with the same radius and a connecting piece 120 detachably connected to the opposite ends of the two semicircular rings 110 for forming a closed circular ring. Specifically, the opposite ends of the two semicircular rings 110 are detachably connected together by the connecting piece 120 to form a closed circular ring sleeved on the pipe to be welded, and the hydraulic adjustment component 200 and the hydraulic drive component 300 cooperate to accurately align the pipe mouth of the pipe, and after spot welding and fixing, the two semicircular rings 110 can be quickly removed by removing the connecting piece 120, and further welding of the pipe can be carried out, thereby greatly improving the welding efficiency. It should be understood that the two semicircular rings 110 have two opposite ends, so there are two connecting pieces 120, which also connect the two opposite ends of the two semicircular rings 110 together.

[0034] like Figure 2 and Figure 3As shown, in this embodiment, the semicircular ring 110 includes two semicircular tubes 111 arranged at intervals along the axial direction and connecting parts 112 respectively connected to the two semicircular tubes 111 along the axial direction, and a plurality of connecting parts 112 are provided, and the plurality of connecting parts 112 are arranged at intervals along the circumferential direction of the semicircular ring 110, and the fixed end of the hydraulic adjustment component 200 is arranged on the connecting part 112. Specifically, the semicircular ring 110 is connected to the two semicircular tubes 111 respectively through a plurality of connecting parts 112, so that the structure of the semicircular ring 110 is compact and reliable, and a gap is left between two adjacent connecting parts 112 in the circumferential direction to provide an operating space for the spot welding of the pipeline, and then the hydraulic adjustment component 200 is installed through the connecting part 112. Optionally, the hydraulic adjustment component 200 is installed on the axial middle part of the connecting part 112 to ensure that when the hydraulic adjustment component 200 presses against the pipeline, the annular body 100 is balanced in force and the structure is stable and reliable. Optionally, the connecting part 112 is arranged in a plate shape to facilitate the installation of the hydraulic adjustment component 200.

[0035] like Figure 2 and Figure 3 As shown, in this embodiment, the connecting member 120 includes two connecting blocks 121 arranged on the circumferential ends of the semicircular tube 111 of one of the semicircular rings 110, the connecting blocks 121 on the circumferential ends of the semicircular tube 111 extend circumferentially and enclose a receiving groove for receiving the semicircular tube 111 of the other semicircular ring 110, and the connecting member 120 also includes a connecting screw 122 axially penetrated through the connecting block 121 and the receiving groove and a locking nut threadedly connected to the connecting screw 122. Specifically, when it is necessary to connect two semicircular rings 110, the connecting screw 122 is penetrated through the connecting block 121 and the receiving groove, and the locking nut is threadedly connected to the connecting screw 122, so that the two semicircular rings 110 are connected together. It should be understood that there are two connecting blocks 121 on one semicircular tube 111, so the connecting screw 122 needs to penetrate four connecting blocks 121 and two receiving grooves to connect the two semicircular rings 110 together.

[0036] like Figure 4 As shown, in this embodiment, the semicircular ring 110 further includes a support pipe 113 which is arranged obliquely and respectively connected to the fixed end and the connecting portion 112 of the hydraulic adjustment assembly 200. Specifically, the support pipe 113 is respectively connected to the fixed end and the connecting portion 112 of the hydraulic adjustment assembly 200 to improve the stability of the hydraulic adjustment assembly 200 during installation, and ensure that the structure of the hydraulic adjustment assembly 200 is stable and reliable when pressing against the pipeline.

[0037] like Figure 4As shown, in this embodiment, two support tubes 113 are provided, and the two support tubes 113 are symmetrically arranged on both sides of the fixed end of the hydraulic adjustment component 200. Specifically, the hydraulic adjustment component 200 is supported by the two support tubes 113 symmetrically arranged on both sides of the fixed end of the hydraulic adjustment component 200, so as to improve the structural stability and prevent the hydraulic adjustment component 200 from tilting, so that the movement direction of the telescopic end of the hydraulic adjustment component 200 is accurate, thereby improving the fine-tuning accuracy of the pipe orifice, thereby improving the alignment accuracy of the pipe orifice.

[0038] like Figure 1 As shown, in this embodiment, the hydraulic drive assembly 300 includes a hydraulic oil tank, a hydraulic pump connected to the hydraulic oil tank, and a hydraulic pipe 310 connected to the hydraulic pump and the plurality of hydraulic adjustment assemblies 200, respectively. Specifically, the hydraulic pump works to extract hydraulic medium from the hydraulic oil tank, and then delivers it to the plurality of hydraulic adjustment assemblies 200 through the hydraulic pipe 310 to provide hydraulic pressure to the plurality of hydraulic adjustment assemblies 200. Optionally, in this embodiment, the hydraulic oil tank and the hydraulic pump are integrated. It should be understood that the specific structure of the hydraulic pump belongs to the well-known technology of those skilled in the art.

[0039] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A large-diameter pipeline welding auxiliary alignment tool, characterized in that: The invention comprises an annular main body (100) arranged in an annular shape and used for sleeved outside a pipe to be welded, a hydraulic adjustment component (200) arranged in a radially telescopic manner on the annular main body (100) and used for being arranged opposite to the pipe mouth of the pipe to be welded so that the telescopic end can be extended to press the pipe or contracted to reset under the drive of hydraulic pressure, and a hydraulic drive component (300) connected to the hydraulic adjustment component (200) and used for providing hydraulic pressure to drive the telescopic end of the hydraulic adjustment component (200) to extend and retract. The hydraulic adjustment component (200) is provided with a plurality of hydraulic adjustment components (200), and the plurality of hydraulic adjustment components (200) are arranged at intervals along the circumference of the annular main body (100), and the hydraulic drive components (300) are respectively connected to the plurality of hydraulic adjustment components (200).

2. The large-diameter pipeline welding auxiliary alignment tool according to claim 1 is characterized in that: A pressing portion (210) extending outwardly in the axial direction is arranged on the telescopic end of the hydraulic adjustment component (200).

3. The large-diameter pipeline welding auxiliary alignment tool according to claim 2 is characterized in that: The pressing end surface of the pressing portion (210) is arranged in an arc shape.

4. The large-diameter pipeline welding auxiliary alignment tool according to claim 2 is characterized in that: An elastic pad is arranged on the pressing end surface of the pressing portion (210).

5. The large-diameter pipeline welding auxiliary alignment tool according to any one of claims 1 to 4, characterized in that: The annular body (100) comprises two semicircular rings (110) with the same radius and connecting pieces (120) which are detachably connected to the opposite ends of the two semicircular rings (110) and are used to form a closed circular ring.

6. The large-diameter pipeline welding auxiliary alignment tool according to claim 5 is characterized in that: The semicircular ring (110) comprises two semicircular tubes (111) arranged at intervals along the axial direction and connecting parts (112) respectively connected to the two semicircular tubes (111) along the axial direction. A plurality of connecting parts (112) are provided. The plurality of connecting parts (112) are arranged at intervals along the circumference of the semicircular ring (110). The fixed end of the hydraulic adjustment assembly (200) is arranged on the connecting part (112).

7. The large-diameter pipeline welding auxiliary alignment tool according to claim 6 is characterized in that: The connecting piece (120) comprises two connecting blocks (121) arranged at two circumferential ends of a semicircular tube (111) of one of the semicircular rings (110); the connecting blocks (121) at two circumferential ends of the semicircular tube (111) extend in the circumferential direction and enclose a receiving groove for receiving the semicircular tube (111) of the other semicircular ring (110); the connecting piece (120) further comprises a connecting screw (122) axially passing through the connecting block (121) and the receiving groove, and a locking nut threadedly connected to the connecting screw (122).

8. The large-diameter pipeline welding auxiliary alignment tool according to claim 6 is characterized in that: The semicircular ring (110) further comprises a support pipe (113) which is arranged obliquely and connected to the fixed end and the connecting portion (112) of the hydraulic adjustment assembly (200) respectively.

9. The large-diameter pipeline welding auxiliary alignment tool according to claim 8 is characterized in that: Two support tubes (113) are provided, and the two support tubes (113) are symmetrically arranged on both axial sides of the fixed end of the hydraulic adjustment component (200).

10. The large-diameter pipeline welding auxiliary alignment tool according to any one of claims 1 to 4, characterized in that: The hydraulic drive assembly (300) includes a hydraulic oil tank, a hydraulic pump connected to the hydraulic oil tank, and hydraulic pipes (310) connected to the hydraulic pump and the plurality of hydraulic adjustment assemblies (200) respectively.

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