Pipeline butt joint clamp and pipeline butt joint method

Abstract

The invention provides a pipeline butt joint clamp and a pipeline butt joint method, and the clamp comprises a plurality of fastening parts which are used for pressing and abutting a to-be-butt-jointed pipeline; the first pipe clamp comprises a first cambered surface part and first connecting parts located at the two ends of the first cambered surface part, a plurality of fastening parts are connected to the first cambered surface part, and a first receding hole is formed in the first cambered surface part and used for receding for welding operation; the second pipe clamp comprises a second cambered surface part and second connecting parts located at the two ends of the second cambered surface part, a plurality of fastening parts are connected to the second cambered surface part, a second receding hole is formed in the second cambered surface part and used for receding for welding operation, and the second connecting parts are used for being in one-to-one correspondence with the first connecting parts and being connected with the first connecting parts. And a space for clamping a to-be-butted pipeline is formed between the first cambered surface part and the second cambered surface part. According to the method, a large amount of time can be saved, the assembling efficiency of the pipeline butt-joint ports is improved, the pipeline butt-joint quality is high, and the method has the advantages of being easy and convenient to construct and easy to popularize in a large range.

Description

Technical Field

[0001] The invention relates to the field of pipeline construction, and in particular to a pipeline butt joint clamp and a pipeline butt joint method. Background Art

[0002] At present, there are many process pipelines and energy medium pipelines in the fields of metallurgy, petrochemical industry, power construction, large, medium and small industrial engineering construction, and the pipeline network is complex. During the construction process, there are many pipeline joints, and the personnel and machinery costs are high. The conventional method of connecting pipelines is slow and affects the construction progress, and the quality of pipeline connection cannot be guaranteed.

[0003] The construction of large, medium and small pipelines plays a key role in the entire construction process. During the construction, many problems are prone to occur at the interfaces of various pipelines, such as substandard parallelism of the pipe mouths, uneven pipe mouths, uneven gaps at the interfaces, serious internal and external pipe mouths, and tapered mouths, which cannot guarantee the quality of pipeline docking. If the above problems are not found during the construction process, then after the project is put into production, it will be easy for the pipeline interfaces to break, leak seriously, and other phenomena that directly affect production, causing huge losses to the construction unit. Summary of the invention

[0004] The purpose of the present invention is to provide a pipe docking clamp and a pipe docking method, which can save a lot of time, improve the efficiency of pipe docking interface assembly, and have high quality of pipe docking, simple construction, and easy large-scale promotion.

[0005] In order to achieve the above object, the present invention provides a pipe butt joint clamp, which comprises:

[0006] A plurality of fastening components, wherein the fastening components are used to press against the pipes to be connected;

[0007] A first pipe clamp, the first pipe clamp comprising a first arc surface and first connecting parts located at two ends of the first arc surface, a plurality of the fastening components are connected to the first arc surface, and a first clearance hole is provided on the first arc surface for making way for welding operation;

[0008] The second pipe clamp includes a second arc surface and second connecting parts located at both ends of the second arc surface, a plurality of the fastening components are connected to the second arc surface, a second clearance hole is provided on the second arc surface for making way for welding operation, and the second connecting part is used to correspond to and connect with the first connecting part one by one, so that a space for clamping the pipe to be connected is formed between the first arc surface and the second arc surface.

[0009] Optionally, the pipe docking clamp includes a connecting bolt and a fastening nut, and the second connecting part is connected to the first connecting part through the connecting bolt and the fastening nut.

[0010] Optionally, the fastening components include nuts and fastening bolts that are threadedly matched with each other, a plurality of the nuts are fixedly connected to the first arc surface portion, a plurality of the nuts are fixedly connected to the second arc surface portion, and the fastening bolts are used to press against the pipe to be connected.

[0011] Optionally, a plurality of mounting holes are provided on the first arc surface portion and the second arc surface portion, and a nut is fixedly connected to each of the mounting holes.

[0012] Based on another aspect of the present invention, the present invention further provides a pipeline docking method, using the pipeline docking clamp as described above, the pipeline docking method comprises:

[0013] Placing two pipes to be butted together at a position where they can be butted together, so that the central axes of the two pipes to be butted together are located on the same straight line;

[0014] Putting the pipe docking clamp on the docking position of the two pipes to be docked, so that the distance between the two pipes to be docked is less than a preset value, and the first clearance hole and the second clearance hole can expose the docking position of the two pipes to be docked;

[0015] Align the second connection part with the first connection part one by one and connect them tightly;

[0016] Adjusting and fastening the two pipes to be butted together by using a plurality of fastening components, so that the two pipes to be butted together are butted in place;

[0017] Partially welding the two pipes to be butted together through the first clearance hole and the second clearance hole;

[0018] The pipe butt joint fixture is removed, and the circumferential welding of the two pipes to be butt jointed is continued.

[0019] Optionally, the pipe docking method includes manufacturing the pipe docking clamp so that the radii of the first arc surface portion and the second arc surface portion are both larger than the radius of the pipe to be docked, and the sum of the central angle corresponding to the first arc surface portion and the central angle corresponding to the second arc surface portion is not greater than 360°.

[0020] Optionally, the step of making the pipe docking clamp includes opening a plurality of mounting holes on the first arc surface portion and the second arc surface portion, and welding a nut in each of the mounting holes.

[0021] Optionally, the preset value is 2mm-4mm.

[0022] Optionally, when the butt joints of the two pipes to be butted are different, the two pipes to be butted are trimmed so that the inner and outer diameters of the pipe walls at the butt joints of the two pipes to be butted are the same.

[0023] Optionally, the pipe docking method includes: raising the two pipes to be docked by 100 mm-300 mm, and placing the two pipes to be docked at a docking position using lifting equipment.

[0024] As configured above, the pipe docking fixture of the present invention clamps the pipe through the first pipe clamp and the second pipe clamp, and can adjust the positions of the two pipes to be docked through multiple fastening components. Compared with the traditional pipe docking method, the present invention can save a lot of time, improve the efficiency of the assembly of the pipe docking interface, and the quality of the pipe docking is high, which greatly reduces the probability of defects such as fracture and leakage at the pipe docking interface after the project is put into production, ensuring the quality of the project and the safety of subsequent production. At the same time, the present invention also has the advantages of simple construction and easy large-scale promotion, and has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Those skilled in the art should understand that the drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0026] Figure 1 A schematic diagram of a pipe docking clamp according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 Side view of

[0028] Figure 3 The figure is a schematic diagram of a first pipe clamp of a pipe docking clamp according to an embodiment of the present invention.

[0029] The reference numerals are as follows:

[0030] 1-first pipe clamp; 11-first arc surface; 12-first clearance hole; 13-first connecting portion; 2-second pipe clamp; 21-second arc surface; 22-second connecting portion; 3-fastening component; 31-nut; 32-fastening bolt; 41-connecting bolt; 42-fastening nut; 5-pipeline to be connected. DETAILED DESCRIPTION

[0031] In this document, unless otherwise specified, the terms "upper", "lower", "left", "right", "inside", "outside", "front", "back", "top", "bottom", etc. are used to indicate directions or positional relationships based on the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction and operation. Therefore, they cannot be understood as limiting the present invention.

[0032] The specific implementation of the present invention will be described in more detail below in conjunction with the schematic diagram. The advantages and features of the present invention will become clearer based on the following description. It should be noted that the drawings are all in a very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0033] Figure 1 is a schematic diagram of a pipe docking clamp according to an embodiment of the present invention. Figure 2 yes Figure 1 Refer to Figure 1 and Figure 2 An embodiment of the present invention provides a pipe docking clamp, which includes a plurality of fastening components 3, a first pipe clamp 1 and a second pipe clamp 2.

[0034] The first pipe clamp 1 includes a first arc portion 11 and a first connection portion 13 located at both ends of the first arc portion 11, a plurality of fastening components 3 are connected to the first arc portion 11, and a first clearance hole 12 is provided on the first arc portion 11 for making way for welding operation. The second pipe clamp 2 includes a second arc portion 21 and a second connection portion 22 located at both ends of the second arc portion 21, a plurality of fastening components 3 are connected to the second arc portion 21, and a second clearance hole 23 is provided on the second arc portion 21 for making way for welding operation, and the second connection portion 22 is used to correspond to and connect with the first connection portion 13 one by one, so that a space for clamping the pipe 5 to be connected is formed between the first arc portion 11 and the second arc portion 21. The fastening component 3 is used to press against the pipe 5 to be connected to play the role of fastening the pipe 5 to be connected, and the two pipes 5 to be connected are pressed against by the fastening component 3. For example, the fastening component 3 is divided into two groups, and each group of fastening components 3 is pressed against one pipe 5 to be connected. Preferably, all the fastening components 3 of each group are distributed on the same plane and the plane is perpendicular to the axis of the pipe 5 to be connected. The first pipe clamp 1 and the second pipe clamp 2 can be made of a plate with a thickness of 8mm-12mm. The first clearance hole 12 and the second clearance hole 23 can be, for example, both strip holes, and the long side of the strip hole is perpendicular to the axis of the pipe to be connected.

[0035] The number of the first connection parts 13 is at least two, and they are symmetrically distributed at both ends of the first arc surface part 11. Similarly, since the second connection parts 22 correspond to the first connection parts 13 one by one, the number of the second connection parts 22 is also at least two, and they are symmetrically distributed at both ends of the second arc surface part 21. In this embodiment, the number of the first connection parts 13 is 4, of which two first connection parts 13 are located on the side where one pipe 5 to be connected is located, and the remaining two first connection parts 13 are located on the side where another pipe 5 to be connected is located, and the distribution of the second connection parts 22 is similar.

[0036] Further, the pipe docking clamp includes a connecting bolt 41 and a fastening nut 42, and the second connecting portion 22 is connected to the first connecting portion 13 by the connecting bolt 41 and the fastening nut 42. Exemplarily, the second connecting portion 22 and the first connecting portion 13 can both be straight plates, and the second connecting portion 22 and the first connecting portion 13 are both provided with through holes for assembling the connecting bolt 41.

[0037] Furthermore, the fastening component 3 includes nuts 31 and fastening bolts 32 that are threadedly matched with each other. A plurality of nuts 31 are fixedly connected to the first arc portion 11, and a plurality of nuts 31 are fixedly connected to the second arc portion 21. The screws of the fastening bolts 32 are used to press against the pipe 5 to be connected, and the pipe 5 to be connected can be tightened by rotating the fastening bolts 32. Preferably, a plurality of mounting holes are provided on the first arc portion 11 and the second arc portion 21, and a nut 31 is fixedly connected to each mounting hole. In other embodiments, the nuts 31 can also be fixed to the sides of the first arc portion 11 and the second arc portion 21, such as Figure 2 and Figure 3 As shown. It is understandable that it is more secure to set the mounting hole to fix the nut 31. In some other embodiments, the fastening component 3 can be a stud, the first arc portion 11 directly cooperates with the stud thread, and the second arc portion 21 directly cooperates with the stud thread, and the stud is used to press against the pipe to be connected.

[0038] Based on another aspect of the present invention, the present invention also provides a pipe docking method, using the above pipe docking clamp, the pipe docking method includes step S1, step S2, step S3, step S4, step S5 and step S6, and step S1, step S2, step S3, step S4, step S5 and step S6 are described in detail below.

[0039] Step S1: placing two pipes 5 to be butted at a position where they can be butted together, so that the central axes of the two pipes 5 to be butted are located on the same straight line.

[0040] Specifically, the two pipes 5 to be butted are raised by 100 mm to 300 mm, and the two pipes 5 to be butted are placed at the position where they can be butted by using a lifting device. For example, according to the requirements of the on-site construction plan layout, the two pipes 5 to be butted are raised by about 200 mm using sleepers or other objects that can be raised, and the two pipes 5 to be butted are initially placed at the position where they can be butted by using a crane or other lifting tools, so that the central axes of the two pipes 5 to be butted are located on the same straight line, and the two pipes 5 to be butted are effectively fixed to prevent the two pipes 5 to be butted from rolling and sliding.

[0041] Step S2: Put the pipe joint clamp on the joint of the two pipes 5 to be joined, so that the distance between the two pipes 5 to be joined is less than a preset value, and the first clearance hole 12 and the second clearance hole 23 can expose the joint of the two pipes 5 to be joined. Exemplarily, the preset value is 2mm-4mm.

[0042] For example, first, the first pipe clamp 1 and the second pipe clamp 2 are put on a pipe 5 to be connected, and then a hand winch or other retractable tool is used to pull another pipe 5 to be connected between the first pipe clamp 1 and the second pipe clamp 2, so that the gap between the two pipes 5 to be connected is within the range of about 3 mm, and the first clearance hole 12 and the second clearance hole 23 can expose the connection between the two pipes 5 to be connected, so as to facilitate the subsequent welding of the connection.

[0043] Step S3: The second connection part 22 is connected to the first connection part 13 in a one-to-one correspondence and is fastened and connected. That is, the second connection part 22 is fastened and connected to the first connection part 13 by the connecting bolt 41 and the fastening nut 42 .

[0044] Step S4: The two pipes 5 to be butted are adjusted and fastened by a plurality of fastening components 3 so that the two pipes 5 to be butted are butted in place.

[0045] The two pipes 5 to be butted are supported by a plurality of fastening bolts 32, and the positions of the two pipes 5 to be butted can be adjusted according to the parallelism of the cross sections of the two pipes 5 to be butted, and can be adjusted in the up, down, left, and right directions until the gap between the two pipes 5 to be butted and various parameters affecting the butt quality meet the specification requirements.

[0046] Step S5: Locally welding the two pipes 5 to be butted together is performed through the first clearance hole 12 and the second clearance hole 23 .

[0047] Exemplarily, the two pipes 5 to be butted are spot-welded and fixed through the first clearance hole 12 and the second clearance hole 23 .

[0048] Step S6: Remove the pipe joint fixture and continue to perform circumferential welding on the two pipes 5 to be joined.

[0049] It is understandable that when the docking interfaces of the two pipes 5 to be docked are different, the two pipes 5 to be docked need to be trimmed before docking so that the inner and outer diameters of the pipe walls at the docking points of the two pipes 5 to be docked are the same to ensure the quality of the pipe docking interfaces.

[0050] The pipe docking method further includes making a pipe docking fixture, so that the radius of the first arc surface portion 11 and the second arc surface portion 21 are both larger than the radius of the pipe 5 to be docked, and the sum of the central angle corresponding to the first arc surface portion 11 and the central angle corresponding to the second arc surface portion 21 is not greater than 360°. Preferably, the radius of the first arc surface portion 11 and the second arc surface portion 21 are the same. For example, a steel plate with a thickness of 10 mm and a width of 200 mm is flame bent, and the bending radius is 1.5 times the radius of the pipe to be docked to obtain the first arc surface portion 11 and the second arc surface portion 21, and the sum of the arc lengths of the first arc surface portion 11 and the second arc surface portion 21 can be equivalent to the outer circumference of the pipe to be docked.

[0051] The steps of making the pipe docking clamp include opening a plurality of mounting holes on the first arc surface portion 11 and the second arc surface portion 21, and welding a nut 31 in each mounting hole. For example, three mounting holes are opened on each of the first arc surface portion 11 and the second arc surface portion 21, and then the nuts 31 are riveted into the mounting holes.

[0052] As configured above, the pipe docking fixture of the present invention clamps the pipe through the first pipe clamp 1 and the second pipe clamp 2, and can adjust the positions of the two pipes 5 to be docked through multiple fastening components 3. Compared with the traditional pipe docking method, the present invention can save a lot of time, improve the efficiency of the assembly of the pipe docking interface, and the quality of the pipe docking is high, which greatly reduces the probability of defects such as fracture and leakage at the pipe docking interface after the project is put into production, ensuring the quality of the project and the safety of subsequent production. At the same time, the present invention also has the advantages of simple construction and easy promotion on a large scale, and has a very broad application prospect.

[0053] It should be noted that references to "one embodiment", "an embodiment", "a specific embodiment", "some embodiments", etc. in the specification only indicate that the described embodiment may include a particular feature, structure or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. In addition, when a particular feature, structure or characteristic is described in conjunction with an embodiment, whether or not explicitly described, it is within the knowledge of a person skilled in the relevant art to implement such feature, structure or characteristic in conjunction with other embodiments.

[0054] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0055] It should also be noted that, although the present invention has been disclosed as a preferred embodiment, the above embodiment is not intended to limit the present invention. For any technician familiar with the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

[0056] It should also be understood that, unless otherwise specified or indicated, the terms "first", "second", "third", etc. in the specification are merely used to distinguish between the various components, elements, steps, etc. in the specification, and are not used to indicate the logical relationship or sequential relationship between the various components, elements, steps, etc.

[0057] It should also be recognized that the terms described herein are only used to describe specific embodiments and are not intended to limit the scope of the invention. It should be noted that the singular forms "a" and "an" used herein and in the appended claims include plural references unless the context clearly indicates otherwise. For example, a reference to "a step" or "a device" means a reference to one or more steps or devices, and may include secondary steps and secondary devices. All conjunctions used should be understood in the broadest sense. And, the word "or" should be understood to have the definition of a logical "or", rather than a logical "exclusive or", unless the context clearly indicates otherwise. In addition, the implementation of the method and / or device in the embodiments of the present invention may include performing the selected task manually, automatically, or in combination.

Claims

1. A pipe joint clamp, characterized in that: include: A plurality of fastening components, wherein the fastening components are used to press against the pipes to be connected; A first pipe clamp, the first pipe clamp comprising a first arc surface and first connecting parts located at two ends of the first arc surface, a plurality of the fastening components are connected to the first arc surface, and a first clearance hole is provided on the first arc surface for making way for welding operation; The second pipe clamp includes a second arc surface and second connecting parts located at both ends of the second arc surface, a plurality of the fastening components are connected to the second arc surface, a second clearance hole is provided on the second arc surface for making way for welding operation, and the second connecting part is used to correspond to and connect with the first connecting part one by one, so that a space for clamping the pipe to be connected is formed between the first arc surface and the second arc surface.

2. The pipe joint clamp according to claim 1, characterized in that: The pipe docking clamp comprises a connecting bolt and a fastening nut, and the second connecting part is connected to the first connecting part through the connecting bolt and the fastening nut.

3. The pipe joint clamp according to claim 1, characterized in that: The fastening component includes nuts and fastening bolts that are threadedly matched with each other. A plurality of the nuts are fixedly connected to the first arc surface portion, and a plurality of the nuts are fixedly connected to the second arc surface portion. The fastening bolts are used to press against the pipe to be connected.

4. The pipe joint clamp according to claim 3, characterized in that: The first arc surface portion and the second arc surface portion are both provided with a plurality of mounting holes, and a nut is fixedly connected in each of the mounting holes.

5. A method for butt jointing pipes, using the pipe butt jointing fixture as claimed in any one of claims 3 to 4, characterized in that: include: Placing two pipes to be butted together at a position where they can be butted together, so that the central axes of the two pipes to be butted together are located on the same straight line; Putting the pipe docking clamp on the docking position of the two pipes to be docked, so that the distance between the two pipes to be docked is less than a preset value, and the first clearance hole and the second clearance hole can expose the docking position of the two pipes to be docked; Align the second connection part with the first connection part one by one and connect them tightly; Adjusting and fastening the two pipes to be butted together by using a plurality of fastening components, so that the two pipes to be butted together are butted in place; Partially welding the two pipes to be butted together through the first clearance hole and the second clearance hole; The pipe butt joint fixture is removed, and the circumferential welding of the two pipes to be butt jointed is continued.

6. The pipeline docking method according to claim 5, characterized in that: The pipe docking method includes manufacturing the pipe docking fixture so that the radii of the first arc surface portion and the second arc surface portion are both larger than the radius of the pipe to be docked, and the sum of the central angle corresponding to the first arc surface portion and the central angle corresponding to the second arc surface portion is not greater than 360°.

7. The pipeline docking method according to claim 6, characterized in that: The steps of making the pipe joint clamp include: opening a plurality of mounting holes on the first arc surface portion and the second arc surface portion, and welding a nut in each of the mounting holes.

8. The pipeline docking method according to claim 5, characterized in that: The preset value is 2mm-4mm.

9. The pipeline docking method according to claim 5, characterized in that: When the butt joints of the two pipes to be butted are different, the two pipes to be butted are trimmed so that the inner and outer diameters of the pipe walls at the butt joints of the two pipes to be butted are the same.

10. The pipeline docking method according to claim 5, characterized in that: The pipeline docking method comprises: raising the two pipelines to be docked by 100 mm to 300 mm, and placing the two pipelines to be docked at docking positions by using hoisting equipment.

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