A compressor on-site pipeline welding positioning device and use method thereof

Abstract

The present invention provides a compressor on-site pipeline welding positioning device and a method of using the same. The device includes a compressor skid base, a fixed pipeline, a movable pipeline, a movable pipeline holder assembly, a movable pipeline support block, a fixed pipeline holder assembly, a fixed pipeline support block and a holder positioning assembly; the movable pipeline holder assembly is clamped on the movable pipeline, the fixed pipeline holder assembly is clamped on the fixed pipeline, and the holder positioning assembly is respectively connected to the fixed pipeline holder assembly and the movable pipeline holder assembly. After the assembly is completed and the holder positioning assembly is removed, the fixed pipeline and the movable pipeline are coaxial and the distance is kept constant. The present invention is used both when there are no obstacles at the bottom of the fixed pipeline and when there are obstacles at the bottom of the fixed pipeline, which reduces the use requirements of the present invention on the surrounding environment of the fixed pipeline. The present invention has a simple structure. It is easy to operate, has a low manufacturing cost, and the holder positioning assembly is easy to install and remove.

Description

Technical Field

[0001] The invention belongs to the technical field of compressor on-site modification, and in particular relates to a compressor on-site pipeline welding positioning device and a use method thereof. Background Art

[0002] Natural gas is a clean fuel that can be used in power generation, heating, industrial production and other fields to replace traditional fossil fuels such as coal and oil. As economic development increases the demand for energy, natural gas development has attracted more and more attention. In order to improve efficiency, boosting equipment is needed in natural gas extraction, transportation and practical applications. Hydraulic compressors have been widely used in natural gas boosting related fields due to their simple process, few spare parts and low energy consumption.

[0003] With the continuous optimization of processes in the process of natural gas extraction, transportation and actual application, various automatic controls, new safety valves, and solenoid valve functions are continuously optimized and upgraded. The pipelines of early hydraulic compressors are no longer suitable for the relevant processes of existing hydraulic compressor boosting equipment. Therefore, the pipelines of hydraulic compressors must be modified on site. The pipelines of early hydraulic compressors are usually stainless steel pipelines, with specifications of φ34×5 and φ22×3 as the main specifications. For hydraulic compressor equipment whose pipelines need to be modified, there are currently two main modification methods: one is to transport the entire equipment back to the hydraulic compressor manufacturer for modification. The disadvantage of this method is that the modification cycle is long, the cost is high, and it affects the operation rate of the on-site equipment; the second is to weld the pipelines on site. Due to the limitations of on-site conditions and the existence of pipeline position and actual deformation, it is difficult to align the two pipelines. Therefore, it may be necessary to make corresponding transfer ends in height, length and width at the same time, resulting in a large number of welding points and prone to quality accidents.

[0004] That is to say, the existing on-site pipeline welding of hydraulic compressors has the problems of long transformation period, high cost, affecting the operation rate of on-site equipment or making it difficult to align the movable pipeline and the fixed pipeline. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a compressor on-site pipeline welding positioning device and a method for using the same, which effectively solves the problems of long transformation cycle, high cost, affecting the operation rate of on-site equipment or difficulty in aligning the movable pipeline and the fixed pipeline in the hydraulic compressor on-site pipeline welding in the prior art. To achieve the above purpose, the present invention provides the following technical solutions: a compressor on-site pipeline welding positioning device, comprising a compressor skid base, a fixed pipeline, a movable pipeline, a movable pipeline holder assembly, a movable pipeline support block, a fixed pipeline holder assembly, a fixed pipeline support block and a holder positioning assembly; the movable pipeline holder assembly is clamped on the movable pipeline, and the movable pipeline support block is located between the compressor skid base and the movable pipeline holder assembly; the fixed pipeline holder assembly is clamped on the fixed pipeline, and the fixed pipeline support block is located between the compressor skid base and the fixed pipeline holder assembly; the holder positioning assembly is respectively connected to the fixed pipeline holder assembly and the movable pipeline holder assembly, and after the assembly is completed and the holder positioning assembly is removed, the fixed pipeline and the movable pipeline are coaxial and the distance is kept constant.

[0006] Preferably, the movable pipe is a first pipe, the fixed pipe is a second pipe, the movable pipe clamp assembly is a first clamp assembly, the first clamp assembly includes a first upper clamp, a first intermediate connecting block and a first lower clamp, the first upper clamp, the first intermediate connecting block and the first lower clamp all include a minor arc and have the same radius, a nut is welded on the first lower clamp, and bolts pass through the first upper clamp, the first intermediate connecting block and the first lower clamp in sequence to fix the first clamp assembly and the first pipe.

[0007] Preferably, the fixed pipe socket assembly is a second socket assembly, the structure of the second socket assembly is the same as that of the first socket assembly, the socket positioning assembly is a first integral positioning assembly, the first integral positioning assembly is a T-shaped structure, the first integral positioning assembly is composed of a horizontal plate and a vertical plate, the horizontal plate of the first integral positioning assembly has two through holes, the vertical plate of the first integral positioning assembly has U-shaped grooves on both sides, and the specifications of the U-shaped grooves of the vertical plate of the first integral positioning assembly correspond to the specifications of the first pipe.

[0008] Preferably, the fixed pipe clamp assembly is a third clamp assembly, and the third clamp assembly includes a first fixed side clamp, a second middle connecting block and a first movable side clamp, the length of the first fixed side clamp is longer than the length of the first movable side clamp, a nut is welded on the side of the first fixed side clamp, and bolts pass through the first fixed side clamp, the second middle connecting block and the first movable side clamp in sequence to fix the third clamp assembly and the second pipe.

[0009] Preferably, the card seat positioning assembly is a split structure, the card seat positioning assembly includes a first split positioning seat and a first split positioning block, the first split positioning seat includes a first side panel and a second side panel, a U-shaped groove is provided on a side of the second side panel close to the first side panel, the specification of the U-shaped groove of the second side panel is consistent with the specification of the second pipe, a guide rail is provided on a side of the second side panel away from the first side panel, the number of the guide rails is two, the first split positioning block includes a third side panel and a fourth side panel, a U-shaped groove is provided on a side of the fourth side panel close to the third side panel, the specification of the U-shaped groove of the fourth side panel is consistent with the specification of the first pipe.

[0010] Preferably, the movable pipe is the third pipe, the fixed pipe is the fourth pipe, the movable pipe holder assembly is the fourth holder assembly, the fourth holder assembly includes a second upper holder, a first reducing adapter block and a second lower holder, the second upper holder and the second lower holder are both provided with an arc-shaped notch, a nut is welded on the second lower holder, and bolts pass through the second upper holder, the two first reducing adapter blocks and the second lower holder in sequence to fix the fourth holder assembly and the third pipe.

[0011] Preferably, the fixed pipe socket assembly is a fifth socket assembly, the structure of the fifth socket assembly is the same as that of the fourth socket assembly, the socket positioning assembly is a second integral positioning assembly, the second integral positioning assembly is a T-shaped structure, the second integral positioning assembly consists of a horizontal plate and a vertical plate, the horizontal plate of the second integral positioning assembly has two through holes, the vertical plate of the second integral positioning assembly has U-shaped grooves on both sides, and the specifications of the U-shaped grooves of the vertical plate of the second integral positioning assembly correspond to the specifications of the third pipe.

[0012] Preferably, the fixed pipe clamp assembly is a sixth clamp assembly, the sixth clamp assembly includes a second fixed side clamp, a second reducing adapter block and a second movable side clamp, the second fixed side clamp and the second movable side clamp are both provided with an arc-shaped notch, a nut is welded on the side of the second fixed side clamp, and bolts pass through the second fixed side clamp, the second reducing adapter block and the second movable side clamp in sequence to fix the sixth clamp assembly and the fourth pipe; the clamp positioning assembly is a split structure, the clamp positioning assembly includes a second split positioning seat and a second split positioning block, a U-shaped groove is provided on one side of the second split positioning seat, the specifications of the U-shaped groove of the second split positioning seat are consistent with the specifications of the fourth pipe, and a guide rail is provided on the back of the U-shaped groove.

[0013] The present invention also provides a method for using the compressor on-site pipeline welding positioning device, which is divided into a method for using S1 for fixing a pipeline bottom without obstacles and a method for using S2 for fixing a pipeline bottom with obstacles;

[0014] Wherein: the method S1 for fixing the bottom of the pipeline without obstacles comprises the following steps:

[0015] S11, chamfering the end faces of the first pipe and the second pipe to be welded, and removing burrs; determining the sizes of the movable pipe support block and the fixed pipe support block according to the site conditions, and fixing the movable pipe support block to the first lower clamping seat, and fixing the fixed pipe support block to the lower clamping seat corresponding to the second clamping seat assembly;

[0016] S12, connecting the first upper clamping seat, the upper clamping seat corresponding to the second clamping seat assembly and the first integral positioning assembly into a whole by tightening the plum handle screw;

[0017] S13, the integral clamp formed in step S12 is connected to the second pipe, and the second clamp assembly is pre-positioned by bolts, and the fixed pipe support block in step S11 and the compressor skid-mounted base are spot welded and limited;

[0018] S14, achieving engagement between the second clamping seat assembly and the second pipe by tightening bolts;

[0019] S15, pre-positioning the first holder assembly is realized through the whole formed in step S12, and the movable pipeline support block in step S11 is spot welded to the compressor skid-mounted base to limit the position;

[0020] S16, pushing the movable pipe so that when the first integral positioning assembly cannot be pushed after being limited, the first clamping seat assembly and the first pipe are engaged by tightening bolts;

[0021] S17, loosen the plum handle screw to separate the first integral positioning assembly from the first clamping seat assembly and the second clamping seat assembly. At this time, the first pipe and the second pipe are coaxial and at a fixed distance.

[0022] S18, perform corresponding spot welding.

[0023] Wherein: the method S2 for fixing the obstacle at the bottom of the pipeline comprises the following steps:

[0024] S21, chamfering the end faces of the first pipe and the second pipe to be welded, and removing burrs; determining the sizes of the movable pipe support block and the fixed pipe support block according to the site conditions, and fixing the movable pipe support block to the first lower clamping seat, and fixing the fixed pipe support block to the first fixed side clamping seat;

[0025] S22, connecting the first upper clamping seat and the first split positioning block into a whole by tightening the plum handle screw;

[0026] S23, connecting the first movable side holder and the first split positioning seat into a whole by tightening the plum handle screw;

[0027] S24, the whole formed in S22 is limited with the second pipeline, the position of the fixed pipeline support block is determined, the fixed pipeline support block is spot welded and limited on the compressor skid-mounted base, and the third clamping seat assembly and the second pipeline are clamped by tightening bolts;

[0028] S25, inserting the fourth side plate formed in S23 into the gap formed by the two guide rails for positioning, determining the position of the movable pipeline support block, and spot welding the movable pipeline support block on the compressor skid-mounted base for positioning;

[0029] S26, pushing the movable pipe so that when it cannot be pushed after being limited by the first split positioning block, the first clamping seat assembly and the first pipe are engaged by tightening bolts;

[0030] S27, loosen the plum handle screw of the first split positioning block, and pull the first split positioning block out of the first split positioning seat;

[0031] S28, loosen the plum handle screw of the first split positioning seat to separate the first split positioning seat from the third clamping seat assembly. At this time, the first pipe and the second pipe are coaxial and at a fixed distance.

[0032] S29, perform corresponding spot welding.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention provides a compressor on-site pipeline welding positioning device, in which a fixed pipeline clamping assembly is clamped on the fixed pipeline, and the positioning of the fixed pipeline clamping assembly is achieved through the clamping assembly positioning assembly, while pushing the movable pipeline to limit the position on the movable pipeline clamping assembly, thereby ensuring that the fixed pipeline and the movable pipeline are coaxial and the distance is kept constant, which is convenient for subsequent processes.

[0035] The compressor on-site pipeline welding positioning device provided by the present invention has both solutions for the condition that there is no obstacle at the bottom of the fixed pipeline and solutions for the condition that there is an obstacle at the bottom of the fixed pipeline, which reduces the use requirements of the present invention on the surrounding environment of the fixed pipeline. For the two commonly used pipelines of φ34×5 and φ22×3, most of the parts of the fixed pipeline holder assembly and the movable holder assembly are the same, making the present invention more versatile.

[0036] The compressor on-site pipeline welding positioning device provided by the present invention has a simple overall structure, convenient operation, and low manufacturing cost. Whether the card seat positioning component is an integral type or a separate type, installation and removal are easy to operate, and the positioning is accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is an overall schematic diagram of Embodiment 1 of the present invention;

[0038] Figure 2 is a structural schematic diagram of the first card holder assembly of the present invention;

[0039] Figure 3 is a schematic structural diagram of a first integral positioning assembly of the present invention;

[0040] Figure 4 is an overall schematic diagram of Embodiment 2 of the present invention;

[0041] Figure 5 is a schematic structural diagram of the third card holder assembly of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the first split positioning seat of the present invention;

[0043] Figure 7 It is a structural schematic diagram of the first split positioning block of the present invention;

[0044] Figure 8 is an overall schematic diagram of Embodiment 3 of the present invention;

[0045] Fig. 9 is a structural schematic diagram of a fourth card holder assembly of the present invention;

[0046] Fig.10 is an overall schematic diagram of Embodiment 4 of the present invention;

[0047] Fig.11 It is a schematic structural diagram of the sixth card holder assembly of the present invention.

[0048] In the figure: 110, first pipeline; 120, third pipeline; 210, second pipeline; 220, fourth pipeline; 300, first card seat assembly; 310, first upper card seat; 320, first middle connecting block; 330, first lower card seat; 300a, fourth card seat assembly; 310a, second upper card seat; 320a, first reducer adapter block; 330a, second lower card seat; 400, movable pipeline support block; 500, second card seat assembly; 500a, third card seat assembly; 510a, first fixed side card seat; 520a, second middle connecting block; 530a, The first movable side holder; 500b, the fifth holder assembly; 500c, the sixth holder assembly; 510c, the second fixed side holder; 520c, the second reducer adapter block; 530c, the second movable side holder; 600, the movable pipe support block; 700, the first overall positioning assembly; 700a, the second overall positioning assembly; 800, the first split positioning seat; 810, the first side plate; 820, the second side plate; 800a, the second split positioning seat; 900, the first split positioning block; 910, the third side plate; 920, the fourth side plate; 900a, the second split positioning block. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0050] It should be pointed out that the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0051] It should be understood that, in the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense.

[0052] Example 1

[0053] See attached Figures 1 to 3 The present embodiment provides a compressor on-site pipeline welding positioning device, including a compressor skid base, a fixed pipeline, a movable pipeline, a movable pipeline holder assembly, a movable pipeline support block 400, a fixed pipeline holder assembly, a fixed pipeline support block 600 and a holder positioning assembly.

[0054] The movable pipeline and the fixed pipeline have the same specifications; the movable pipeline holder assembly is clamped on the movable pipeline, the movable pipeline support block 400 is located between the compressor skid base and the movable pipeline holder assembly, and the movable pipeline support block 400 supports the movable pipeline holder assembly; the fixed pipeline holder assembly is clamped on the fixed pipeline, the fixed pipeline support block 600 is located between the compressor skid base and the fixed pipeline holder assembly, and the fixed pipeline support block 600 supports the fixed pipeline holder assembly;

[0055] The holder positioning assembly is respectively connected with the fixed pipe holder assembly and the movable pipe holder assembly. After the assembly is completed and the holder positioning assembly is removed, the fixed pipe and the movable pipe are coaxial and the distance between them is kept constant.

[0056] In the present embodiment 1, the movable pipe is the first pipe 110, the fixed pipe is the second pipe 210, the specifications of both are φ34×5, the movable pipe holder assembly is the first holder assembly 300, the fixed pipe holder assembly is the second holder assembly 500, the size of the second holder assembly 500 can be consistent with the first holder assembly 300, the holder positioning assembly is an integral structure, specifically the holder positioning assembly is the first integral positioning assembly 700. In the present embodiment 1, it is only suitable for the situation where there is no obstacle at the bottom of the second pipe 210.

[0057] The first clamping seat assembly 300 includes a first upper clamping seat 310, a first intermediate connecting block 320 and a first lower clamping seat 330. The number of the first intermediate connecting blocks 320 is two. The first upper clamping seat 310, the first intermediate connecting block 320 and the first lower clamping seat 330 all include a minor arc and have the same radius. A nut is welded on the first lower clamping seat 330. Bolts pass through the first upper clamping seat 310, the first intermediate connecting block 320 and the first lower clamping seat 330 in sequence to fix the first clamping seat assembly 300 and the first pipe 110. A plum handle screw mounting hole is set on the top of the first upper clamping seat 310.

[0058] The first overall positioning component 700 is a T-shaped structure. The first overall positioning component 700 is composed of a horizontal plate and a vertical plate. Two through holes are opened on the horizontal plate of the first overall positioning component 700, and U-shaped grooves are opened on both sides of the vertical plate of the first overall positioning component 700. The specifications of the U-shaped grooves of the vertical plate of the first overall positioning component 700 correspond to the specifications of the first pipe 110. The minimum spacing between the two U-shaped grooves of the vertical plate of the first overall positioning component 700 is generally 2mm. When the first pipe 110 and the second pipe 210 are positioned by this embodiment 1, when the first overall positioning component 700 is removed, the first pipe 110 and the second pipe 210 are coaxial and the shortest distance is 2mm.

[0059] This embodiment 1 also provides a method for using a compressor on-site pipeline welding positioning device, which is a method for fixing the bottom of the pipeline without obstacles S1, and the method includes the following steps:

[0060] S11, chamfer the end faces of the first pipe 110 and the second pipe 210 to be welded, and remove burrs; determine the sizes of the movable pipe support block 400 and the fixed pipe support block 600 according to the site conditions, and fix the movable pipe support block 400 to the first lower clamping seat 330, and fix the fixed pipe support block 600 to the lower clamping seat corresponding to the second clamping seat assembly 500;

[0061] S12, connecting the first upper clamping seat 310, the upper clamping seat corresponding to the second clamping seat assembly 500 and the first integral positioning assembly 700 into a whole by tightening the plum handle screw;

[0062] S13, the whole formed in step S12 is clamped on the second pipe 210, and the second clamping seat assembly 500 is pre-positioned by bolts, and the fixed pipe support block 600 in step S11 is spot welded to the compressor skid base to limit the position;

[0063] S14, the second clamping seat assembly 500 and the second pipe 210 are clamped together by tightening bolts;

[0064] S15, pre-positioning the first holder assembly 300 through the whole formed in step S12, and spot welding the movable pipe support block 400 in step S11 to the compressor skid-mounted base;

[0065] S16, pushing the movable pipe 110 so that when the first integral positioning assembly 700 cannot be pushed after being limited, the first clamping seat assembly 300 and the first pipe 110 are engaged by tightening bolts;

[0066] S17, loosen the plum handle screw to separate the first integral positioning assembly 700 from the first clamping assembly 300 and the second clamping assembly 500, at which time the first pipe 110 and the second pipe 210 are coaxial and at a fixed distance;

[0067] S18, perform corresponding spot welding.

[0068] Example 2

[0069] See attached Figure 2 , Figures 4 to 7, a compressor on-site pipeline welding positioning device is provided in this embodiment 2. In this embodiment 2, the movable pipeline is the first pipeline 110, and the fixed pipeline is the second pipeline 210. The specifications of both are φ34×5. The movable pipeline holder assembly is still the first holder assembly 300 as in embodiment 1, and the fixed pipeline holder assembly is the third holder assembly 500a. The holder positioning assembly is a split structure, and the holder positioning assembly includes a first split positioning seat 800 and a first split positioning block 900. In this embodiment 2, it is only suitable for the situation where there is an obstacle at the bottom of the second pipeline 210.

[0070] The third holder assembly 500a includes a first fixed side holder 510a, a second intermediate connecting block 520a and a first movable side holder 530a, the number of the second intermediate connecting blocks 520a is two, the first fixed side holder 510a, the second intermediate connecting block 520a and the first movable side holder 530a all include a minor arc and have the same radius, the length of the first fixed side holder 510a is longer than the length of the first movable side holder 530a, a nut is welded on the side of the first fixed side holder 510a, and bolts pass through the first fixed side holder 510a, the second intermediate connecting block 520a and the first movable side holder 530a in sequence to fix the third holder assembly 500a and the second pipe 210, and a plum handle screw mounting hole is provided on the side of the first movable side holder 530a.

[0071] The first split positioning seat 800 is an L-shaped structure, and the first split positioning seat 800 includes a first side plate 810 and a second side plate 820. The first side plate 810 is provided with a plum handle screw mounting hole, and the second side plate 820 is provided with a U-shaped groove on the side close to the first side plate 810. The specification of the U-shaped groove of the second side plate 820 is consistent with the specification of the second pipe 210. The second side plate 820 is provided with a guide rail 821 on the side away from the first side plate 810. The number of guide rails 821 is two. The first split positioning block 900 is an L-shaped structure. The first split positioning block 900 is an L-shaped structure. The body positioning block 900 includes a third side panel 910 and a fourth side panel 920. The third side panel 910 is provided with a plum handle screw mounting hole. The fourth side panel 920 is provided with a U-shaped groove on a side close to the third side panel 910. The specification of the U-shaped groove of the fourth side panel 920 is consistent with the specification of the first pipe 110. The first split positioning seat 800 and the first split positioning block 900 are positioned by inserting the fourth side panel 920 into the gap formed by the two guide rails 821. The shortest distance between the U-shaped groove of the second side panel 820 and the U-shaped groove of the fourth side panel is 2 mm.

[0072] This embodiment 2 also provides a method for using a compressor on-site pipeline welding positioning device, which is a method S2 for fixing obstacles at the bottom of a pipeline, and the method includes the following steps:

[0073] S21, chamfer the end faces of the first pipe 110 and the second pipe 210 to be welded, and remove burrs; determine the sizes of the movable pipe support block 400 and the fixed pipe support block 600 according to the site conditions, and fix the movable pipe support block 400 to the first lower clamping seat 330, and fix the fixed pipe support block 600 to the first fixed side clamping seat 510a;

[0074] S22, connecting the first upper clamping seat 310 and the first split positioning block 900 into a whole by tightening the plum handle screw;

[0075] S23, connecting the first movable side clamping seat 530a and the first split positioning seat 800 into a whole by tightening the plum handle screw;

[0076] S24, the whole formed in S22 is limited with the second pipeline 210, the position of the fixed pipeline support block 600 is determined, the fixed pipeline support block 600 is spot welded and limited on the compressor skid base, and the third clamping seat assembly 500a and the second pipeline 210 are clamped by tightening bolts;

[0077] S25, inserting the fourth side plate 920 formed in S23 into the gap formed by the two guide rails 821 for positioning, determining the position of the movable pipeline support block 400, and spot welding the movable pipeline support block 400 on the compressor skid-mounted base for positioning;

[0078] S26, pushing the movable pipe 110 so that when it cannot be pushed after being limited by the first split positioning block 900, the first clamping seat assembly 300 and the first pipe 110 are engaged by tightening bolts;

[0079] S27, loosen the plum handle screw of the first split positioning block 900, and pull the first split positioning block 900 out of the first split positioning seat 800;

[0080] S28, loosen the plum handle screw of the first split positioning seat 800, separate the first split positioning seat 800 from the third clamping seat assembly 500a, at which time the first pipe 110 and the second pipe 210 are coaxial and at a fixed distance;

[0081] S29, perform corresponding spot welding.

[0082] Example 3

[0083] See attached Figure 8 and Fig. 9, a compressor on-site pipeline welding positioning device is provided in this embodiment 3. In this embodiment 3, the movable pipeline is the third pipeline 120, and the fixed pipeline is the fourth pipeline 220. The specifications of both are φ22×3. The movable pipeline clamping assembly is the fourth clamping assembly 300a, and the fixed pipeline clamping assembly is the fifth clamping assembly 500b. The clamping assembly positioning assembly is an integral structure, and specifically, the clamping assembly positioning assembly is the second integral positioning assembly 700a. In this embodiment 3, it is only suitable for the situation where there is no obstacle at the bottom of the fourth pipeline 220.

[0084] The fourth card seat assembly 300a includes a second upper card seat 310a, a first diameter-reducing adapter block 320a and a second lower card seat 330a. The second upper card seat 310a and the second lower card seat 330a are both provided with an arc-shaped notch. The arc of the first diameter-reducing adapter block 320a that is recessed inward is a semicircle. A nut is welded on the second lower card seat 330a. Bolts pass through the second upper card seat 310a, the two first diameter-reducing adapter blocks 320a and the second lower card seat 330a in sequence to fix the fourth card seat assembly 300a and the third pipe 120. A plum handle screw mounting hole is provided on the top of the second upper card seat 310a. In order to reduce the number of parts manufactured, the second upper card seat 310a can adopt the first upper card seat 310 in Example 1, and similarly, the second lower card seat 330a can also adopt the first lower card seat 330 in Example 1.

[0085] The fifth card socket assembly 500b may be identical to the fourth card socket assembly 300a.

[0086] The difference between the second integral positioning assembly 700a in this embodiment 3 and the first integral positioning assembly 700 in embodiment 1 is that the opening sizes of the U-shaped grooves are inconsistent. Through the positioning of embodiment 3, the third pipe 120 and the fourth pipe are coaxial and the shortest distance is 2 mm.

[0087] The method of use of this embodiment 3 is similar to that of embodiment 1, and will not be described again here.

[0088] Example 4

[0089] See attached Figures 9 to 11 , a compressor on-site pipeline welding positioning device is provided in this embodiment 4. In this embodiment 4, the movable pipeline is the third pipeline 120, and the fixed pipeline is the fourth pipeline 220. The specifications of both are φ22×3. The movable pipeline holder assembly is still the fourth holder assembly 300a consistent with the embodiment 3, and the fixed pipeline holder assembly is the sixth holder assembly 500c. The holder positioning assembly is a split structure, and specifically the holder positioning assembly includes a second split positioning seat 800a and a second split positioning block 900a. In this embodiment 4, it is only suitable for the situation where there is an obstacle at the bottom of the fourth pipeline 220.

[0090] The sixth holder assembly 500c includes a second fixed side holder 510c, a second reducing adapter block 520c and a second movable side holder 530c. The second fixed side holder 510c and the second movable side holder 530c are both provided with an arc-shaped notch. The arc of the second reducing adapter block 520c that is recessed inward is a semicircle. The length of the second fixed side holder 510c is longer than that of the second movable side holder 530c. A nut is welded on the side of the second fixed side holder 510c. Bolts pass through the second fixed side holder 510c, the second reducing adapter block 520c and the second movable side holder 530c in sequence to fix the sixth holder assembly 500c and the fourth pipe 220. A plum blossom handle screw mounting hole is provided on the side of the second movable side holder 530c. To reduce the number of parts manufactured, the second fixed side holder 510c can adopt the second fixed side holder 510a in Example 2, and similarly, the second movable side holder 530c can also adopt the first movable side holder 530a in Example 1.

[0091] The second split positioning seat 800a is an L-shaped structure, and a plum handle screw mounting hole is provided on the second split positioning seat 800a. A U-shaped groove is provided on one side of the second split positioning seat 800a. The specifications of the U-shaped groove of the second split positioning seat 800a are consistent with the specifications of the fourth pipe 220. A guide rail is provided on the back of the U-shaped groove. The second split positioning block 900a is an L-shaped structure, and a plum handle screw mounting hole is provided on the second split positioning block 900a. The second split positioning block 900a is provided with a U-shaped groove.

[0092] In order to reduce the difficulty of manufacturing parts, the second split positioning seat 800a is different from the first split positioning seat 800 in Example 2 only in the size of the U-shaped groove opening, and the second split positioning block 900a is different from the first split positioning block 900 in Example 2 only in the size of the U-shaped groove opening. The shortest distance between the U-shaped groove of the second split positioning seat 800a and the U-shaped groove of the second split positioning block 900a is still 2 mm.

[0093] The method of use of this embodiment 4 is similar to that of embodiment 2, and will not be described again here.

[0094] It should be pointed out that, although hydraulic compressors are listed in all the embodiments of the present invention, the contents in the embodiments of the present invention are applicable to the field of on-site pipeline welding in the field of compressors.

[0095] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressor on-site pipeline welding positioning device, comprising a compressor skid base, a fixed pipeline and a movable pipeline, characterized in that: It also includes a movable pipeline clamping seat assembly, a movable pipeline support block (400), a fixed pipeline clamping seat assembly, a fixed pipeline support block (600) and a clamping seat positioning assembly; The movable pipe clamp assembly is clamped on the movable pipe, and the movable pipe support block (400) is located between the compressor skid base and the movable pipe clamp assembly; the fixed pipe clamp assembly is clamped on the fixed pipe, and the fixed pipe support block (600) is located between the compressor skid base and the fixed pipe clamp assembly; The holder positioning assembly is connected to the fixed pipe holder assembly and the movable pipe holder assembly respectively. After the assembly is completed and the holder positioning assembly is removed, the fixed pipe and the movable pipe are coaxial and the distance between them is kept constant. When there is no obstacle at the bottom of the fixed pipe, the holder positioning assembly is a first integral positioning assembly (700), the first integral positioning assembly (700) is a T-shaped structure, the first integral positioning assembly (700) is composed of a horizontal plate and a vertical plate, the horizontal plate of the first integral positioning assembly (700) is provided with two through holes, the vertical plates of the first integral positioning assembly (700) are provided with U-shaped grooves on both sides, and the specifications of the U-shaped grooves of the vertical plates of the first integral positioning assembly (700) correspond to the specifications of the movable pipe; When there is an obstacle at the bottom of the fixed pipe, the card seat positioning assembly is a split structure, and the card seat positioning assembly includes a first split positioning seat (800) and a first split positioning block (900), the first split positioning seat (800) includes a first side plate (810) and a second side plate (820), a U-shaped groove is provided on the side of the second side plate (820) close to the first side plate (810), and the specification of the U-shaped groove of the second side plate (820) is consistent with the specification of the fixed pipe, and a guide rail (821) is provided on the side of the second side plate (820) away from the first side plate (810), and the number of the guide rails (821) is two, and the first split positioning block (900) includes a third side plate (910) and a fourth side plate (920), a U-shaped groove is provided on the side of the fourth side plate (920) close to the third side plate (910), and the specification of the U-shaped groove of the fourth side plate (920) is consistent with the specification of the movable pipe.

2. The compressor on-site pipeline welding positioning device according to claim 1 is characterized in that: The movable pipeline is a first pipeline (110), the fixed pipeline is a second pipeline (210), the movable pipeline clamp assembly is a first clamp assembly (300), the first clamp assembly (300) comprises a first upper clamp (310), a first middle connecting block (320) and a first lower clamp (330), the first upper clamp (310), the first middle connecting block (320) and the first lower clamp (330) all comprise a minor arc and have the same radius, a nut is welded on the first lower clamp (330), and bolts pass through the first upper clamp (310), the first middle connecting block (320) and the first lower clamp (330) in sequence to fix the first clamp assembly (300) and the first pipeline (110) in connection.

3. The compressor on-site pipeline welding positioning device according to claim 2 is characterized in that: The fixed pipe clamp assembly is a second clamp assembly (500), and the structure of the second clamp assembly (500) is the same as that of the first clamp assembly (300).

4. The compressor on-site pipeline welding positioning device according to claim 2 is characterized in that: The fixed pipe clamp assembly is a third clamp assembly (500a), and the third clamp assembly (500a) comprises a first fixed side clamp assembly (510a), a second middle connecting block (520a) and a first movable side clamp assembly (530a), the length of the first fixed side clamp assembly (510a) is longer than the length of the first movable side clamp assembly (530a), a nut is welded on the side surface of the first fixed side clamp assembly (510a), and bolts pass through the first fixed side clamp assembly (510a), the second middle connecting block (520a) and the first movable side clamp assembly (530a) in sequence to fix the third clamp assembly (500a) and the second pipe (210) together.

5. The compressor on-site pipeline welding positioning device according to claim 1 is characterized in that: The movable pipe is a third pipe (120), the fixed pipe is a fourth pipe (220), the movable pipe clamp assembly is a fourth clamp assembly (300a), the fourth clamp assembly (300a) comprises a second upper clamp (310a), a first diameter reducing adapter block (320a) and a second lower clamp (330a), the second upper clamp (310a) and the second lower clamp (330a) are both provided with an arc-shaped notch, a nut is welded on the second lower clamp (330a), and bolts are sequentially passed through the second upper clamp (310a), the two first diameter reducing adapter blocks (320a) and the second lower clamp (330a) to fix the fourth clamp assembly (300a) and the third pipe (120).

6. The compressor on-site pipeline welding positioning device according to claim 5 is characterized in that: The fixed pipe clamp assembly is a fifth clamp assembly (500b), the structure of the fifth clamp assembly (500b) is the same as that of the fourth clamp assembly (300a), the clamp positioning assembly is a second integral positioning assembly (700a), the second integral positioning assembly (700a) is a T-shaped structure, the second integral positioning assembly (700a) is composed of a horizontal plate and a vertical plate, the horizontal plate of the second integral positioning assembly (700a) is provided with two through holes, the vertical plates of the second integral positioning assembly (700a) are provided with U-shaped grooves on both sides, and the specifications of the U-shaped grooves of the vertical plates of the second integral positioning assembly (700a) correspond to the specifications of the third pipe (120).

7. The compressor on-site pipeline welding positioning device according to claim 6 is characterized in that: The fixed pipe clamp assembly is a sixth clamp assembly (500c), and the sixth clamp assembly (500c) comprises a second fixed side clamp (510c), a second reducing adapter block (520c) and a second movable side clamp (530c), the second fixed side clamp (510c) and the second movable side clamp (530c) are both provided with an arc-shaped notch, a nut is welded on the side of the second fixed side clamp (510c), and bolts pass through the second fixed side clamp (510c), the second reducing adapter block (520c) and the second movable side clamp (530c) in sequence to fix the sixth clamp assembly (500c) and the fourth pipe (220) together.

8. The method for using the compressor on-site pipeline welding positioning device according to claim 3 is characterized in that: The method of use is a method S1 for fixing the bottom of the pipeline without obstacles, and the method comprises the following steps: S11, chamfering the end surfaces of the first pipe (110) and the second pipe (210) to be welded, and removing burrs; determining the sizes of the movable pipe support block (400) and the fixed pipe support block (600) according to the site conditions, and fixing the movable pipe support block (400) to the first lower clamping seat (330), and fixing the fixed pipe support block (600) to the lower clamping seat corresponding to the second clamping seat assembly (500); S12, connecting the first upper clamping seat (310), the upper clamping seat corresponding to the second clamping seat assembly (500), and the first integral positioning assembly (700) into a whole by tightening the plum handle screw; S13, the whole formed in step S12 is clamped on the second pipe (210), and the second clamping seat assembly (500) is pre-positioned by bolts, and the fixed pipe support block (600) in step S11 is spot welded to the compressor skid base for limiting position; S14, achieving engagement between the second clamping seat assembly (500) and the second pipe (210) by tightening bolts; S15, pre-positioning the first holder assembly (300) through the whole formed in step S12, and spot welding the movable pipeline support block (400) in step S11 to the compressor skid-mounted base; S16, pushing the first pipe (110) so that when the first integral positioning assembly (700) is limited and cannot be pushed, the first clamping seat assembly (300) and the first pipe (110) are engaged by tightening bolts; S17, loosen the plum handle screw to separate the first integral positioning assembly (700) from the first clamping seat assembly (300) and the second clamping seat assembly (500), at which time the first pipe (110) and the second pipe (210) are coaxial and at a fixed distance; S18, perform corresponding spot welding.

9. The method for using the compressor on-site pipeline welding positioning device according to claim 4, characterized in that: The method of use is the method S2 for fixing obstacles at the bottom of a pipeline, and the method comprises the following steps: S21, chamfering the end surfaces of the first pipe (110) and the second pipe (210) to be welded, and removing burrs; determining the sizes of the movable pipe support block (400) and the fixed pipe support block (600) according to the site conditions, and fixedly connecting the movable pipe support block (400) to the first lower clamping seat (330), and fixedly connecting the fixed pipe support block (600) to the first fixed side clamping seat (510a); S22, connecting the first upper clamping seat (310) and the first split positioning block (900) into a whole by tightening the plum handle screw; S23, connecting the first movable side clamping seat (530a) and the first split positioning seat (800) into a whole by tightening the plum handle screw; S24, the whole formed in S22 is limited with the second pipeline (210), the position of the fixed pipeline support block (600) is determined, the fixed pipeline support block (600) is spot welded and limited on the compressor skid base, and the third clamping seat assembly (500a) and the second pipeline (210) are clamped by tightening bolts; S25, inserting the fourth side plate (920) formed in the above S23 into the gap formed by the two guide rails (821) for positioning, determining the position of the movable pipeline support block (400), and spot welding the movable pipeline support block (400) on the compressor skid-mounted base for positioning; S26, pushing the movable pipe (110) so that when it cannot be pushed after being limited by the first split positioning block (900), the first clamping seat assembly (300) and the first pipe (110) are engaged by tightening bolts; S27, loosen the plum handle screw of the first split positioning block (900), and pull the first split positioning block (900) out of the first split positioning seat (800); S28, loosen the plum handle screw of the first split positioning seat (800), separate the first split positioning seat (800) from the third clamping seat assembly (500a), at which time the first pipe (110) and the second pipe (210) are coaxial and at a fixed distance; S29, perform corresponding spot welding.

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