High-adaptability variable-angle pipeline first-aid repair plugging fixture

Abstract

The utility model discloses a high-adaptability variable-angle pipeline first-aid repair plugging fixture, which relates to the technical field of rapid plugging of oil and gas pipelines, is used for being mounted on a damaged pipeline, and comprises a middle section fixture and end part fixtures arranged at two ends of the middle section fixture, the end part clamp comprises an end part upper protective plate and an end part lower protective plate which can be buckled and fixed; the middle section clamp comprises a middle section upper protective plate and a middle section lower protective plate which can be buckled and fixed; the two ends of the middle section clamp are arranged on the outer sides of the end portion clamps in a sleeved mode, and the two ends of the middle section clamp are matched with the end portion clamps through spherical hinge structures. The problem that the defect of a deformed pipeline with an angle cannot be rapidly and permanently repaired is solved, the construction time can be shortened, and the emergency rescue efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technology of rapid plugging of oil and gas pipelines, and particularly to a high-adaptability variable-angle pipeline emergency repair plugging clamp. Background Art

[0002] Long-distance oil and gas pipelines play an increasingly important role in the national economic development and are one of the lifeline projects of the national economy. Due to their characteristics of numerous points, long lines, dispersion, and continuous production, their safety management is very difficult.

[0003] During the service process of pipelines, they will be affected by a series of internal and external factors, and the pipeline integrity will be further reduced. It is worth noting that due to the particularity of long-distance oil and gas pipelines, how to achieve rapid repair is a key problem that must be solved. In the face of deformed pipeline defects with angles, traditional pipeline clamps and B-type sleeves cannot achieve rapid permanent repair.

[0004] In order to maintain the safe and orderly operation of the pipeline system, it is necessary to design and manufacture a high-adaptability variable-angle pipeline emergency repair structure plugging clamp, which can be applied to damaged pipelines with angles at both ends of the defect, quickly plug the leak, solve the problem that it is difficult to quickly repair special pipe sections by traditional repair methods, and at the same time can be applied to underwater pipelines such as lakes and rivers to achieve non-welded rapid repair of underwater pipeline leaks. Utility Model Content

[0005] Aiming at the problems existing in the above-mentioned prior art, the purpose of the present utility model is to provide a high-adaptability variable-angle pipeline emergency repair plugging clamp, which is mainly used for damaged pipelines with angles at both ends of the defect to quickly plug the leak and carry out emergency repair.

[0006] To achieve the above utility model purpose, the present utility model adopts the following technical solutions:

[0007] A high-adaptability variable-angle pipeline emergency repair plugging clamp provided by the present utility model is used to be installed on a damaged pipeline, and it includes an intermediate section clamp and end clamps arranged at both ends of the intermediate section clamp. The end clamps include an end upper guard plate and an end lower guard plate that can be buckled and fixed. The intermediate section clamp includes an intermediate section upper guard plate and an intermediate section lower guard plate that can be buckled and fixed.

[0008] Both ends of the intermediate section clamp are sleeved outside the end clamps, and a spherical hinge structure is used for cooperation between both ends of the intermediate section clamp and the end clamps.

[0009] As a preferred solution of the present utility model, the end upper guard plate and the end lower guard plate are both fixed by a set of end fastening bolts and end fastening nuts.

[0010] As a preferred embodiment of the present utility model, the upper middle-section guard plate and the lower middle-section guard plate are fixed by a set of middle-section fastening bolts and middle-section fastening nuts.

[0011] As a preferred embodiment of the present utility model, a first sealing structure is provided between the end fixture and the pipeline, and a second sealing structure is provided between the end fixture and the middle-section fixture.

[0012] As a preferred embodiment of the present utility model, the first sealing structure includes an end sealing tensioning mechanism for circumferentially sealing the end fixture and the pipeline, and further includes an end circumferential sealing rubber strip and an end longitudinal sealing rubber strip.

[0013] As a preferred embodiment of the present utility model, the second sealing structure includes a middle-section sealing tensioning mechanism for sealing the end fixture and the middle-section fixture, and further includes a middle-section circumferential sealing rubber strip and a middle-section longitudinal sealing rubber strip.

[0014] As a preferred embodiment of the present utility model, the middle-section fixture is further provided with a drainage device for discharging the medium inside the middle-section fixture.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model solves the problem that it is impossible to perform rapid permanent repair for deformed pipelines with angles;

[0017] Moreover, the angle of the fixture of the present utility model is variable, avoiding the problem that the fixture cannot be installed due to errors generated during angle measurement;

[0018] The present utility model can adopt the fastening method of a bolt stretcher, reducing the construction time and improving the emergency repair efficiency. Description of the Drawings

[0019] Figure 1 is the front view of a high-adaptability variable-angle pipeline emergency repair and plugging fixture in the present utility model.

[0020] Figure 2 is Figure 1 the full cross-sectional view of

[0021] Figure 3 is Figure 1 the left view of

[0022] Wherein:

[0023] 1. End upper guard plate; 2. End lower guard plate; 3. Middle section upper guard plate; 4. Middle section lower guard plate; 5. Slip mechanism; 6. End sealing and tensioning mechanism; 7. End circumferential sealing rubber strip; 8. End longitudinal sealing rubber strip; 9. Middle section sealing and tensioning mechanism; 10. Middle section circumferential sealing rubber strip; 11. Middle section longitudinal sealing rubber strip; 12. End fastening bolt; 13. End fastening nut; 14. Middle section fastening bolt; 15. Middle section fastening nut; 16. Drainage device. Detailed implementation manner

[0024] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manner of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0025] As Figures 1 to 3 A highly adaptable variable-angle pipeline emergency repair and plugging clamp shown in the figure is used to be installed on a damaged pipeline. It includes a middle section clamp and end clamps provided at both ends of the middle section clamp. The end clamps include an end upper guard plate 1 and an end lower guard plate 2 that can be buckled and fixed. The middle section clamp includes a middle section upper guard plate 3 and a middle section lower guard plate 4 that can be buckled and fixed.

[0026] Among them, the end clamps are also provided with a slip mechanism 5 that functions to fix the clamp, which plays a role in preventing axial and longitudinal displacement from the pipeline.

[0027] Both ends of the middle section clamp are sleeved outside the end clamps, and a spherical hinge structure is used for cooperation between both ends of the middle section clamp and the end clamps.

[0028] In this embodiment, the end upper guard plate 1 and the end lower guard plate 2 are fixed by a set of end fastening bolts 12 and end fastening nuts 13.

[0029] In this embodiment, the middle section upper guard plate 3 and the middle section lower guard plate 4 are fixed by a set of middle section fastening bolts 14 and middle section fastening nuts 15.

[0030] In this embodiment, a first sealing structure is provided between the end clamps and the pipeline, and a second sealing structure is provided between the end clamps and the middle section clamps.

[0031] In this embodiment, the first sealing structure includes an end sealing and tensioning mechanism 6 for circumferentially sealing the end clamps and the pipeline, and also includes an end circumferential sealing rubber strip 7 and an end longitudinal sealing rubber strip 8.

[0032] In this embodiment, the second sealing structure includes an intermediate section sealing and tensioning mechanism 9 for sealing the end fixture and the intermediate section fixture, and also includes an intermediate section circumferential sealing rubber strip 10 and an intermediate section longitudinal sealing rubber strip 11.

[0033] In this embodiment, the intermediate section fixture is further provided with a drainage device 16, and the drainage device 16 is used to drain the medium in the intermediate section fixture.

[0034] In the above structure, the slip mechanism 5 functions to fix the fixture and prevent axial and longitudinal displacements from occurring with the pipeline; the end sealing and tensioning mechanism 6 uses external pressure to achieve circumferential sealing between the fixture body and the pipeline; the end circumferential sealing rubber strip 7, the end longitudinal sealing rubber strip 8, the intermediate section circumferential sealing rubber strip 10, and the intermediate section longitudinal sealing rubber strip 11 are made of nitrile rubber and are embedded in the sealing grooves processed on the guard plate, and their function is to form a sealing cavity by the extrusion of the guard plate; the intermediate section sealing and tensioning mechanism 9 uses external pressure to achieve sealing between the fixture bodies; the functions of the end fastening bolts 12, the end fastening nuts 13, the intermediate section fastening bolts 14, and the intermediate section fastening nuts 15 are to generate an extrusion force on the guard plate to form a sealing cavity; the function of the drainage device 16 is to drain the medium in the sealing cavity during the installation of the fixture when the pipeline leaks.

[0035] The specific installation process of the highly adaptable variable-angle pipeline emergency repair and plugging fixture in this embodiment is as follows:

[0036] 1. Before installing the fixture, remove foreign matters such as the anti-corrosion layer and rust on the pipeline surface;

[0037] 2. Detect the ovality of the pipeline. The sealing gasket allows for a small degree of irregularity on the pipeline surface, within a range of 0.8 mm;

[0038] 3. Apply lubricant evenly on the surface of the fixture sealing rubber strip;

[0039] 4. After installing the upper guard plate of the end fixture on the pipeline, install the upper guard plate of the intermediate section (place the fixture as much as possible at the center of the pipeline damage point); after the fixture is connected correctly, install the lower guard plate, bolts, and nuts of the end fixture and tighten the nuts evenly in sequence; finally, install the lower guard plate, bolts, and nuts of the intermediate section fixture and tighten the nuts evenly in sequence.

[0040] 5. When the fixture is completely fixed, the gap between the upper guard plate and the lower guard plate is 3 - 5 mm.

[0041] 6. Tighten the bolts of the sealing and tensioning mechanism so that the end circumferential sealing rubber strip is in close contact with the pipeline, and the intermediate section circumferential sealing rubber strip is in close contact with the end fixture to form a sealing cavity.

[0042] 7. After the sealing pressure test shows no leakage, tighten the bolts of the slip mechanism to fix the fixture on the pipeline.

[0043] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0044] The above-described embodiments merely represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A highly adaptable variable angle pipeline repair and plugging fixture, used for installation on damaged pipelines, characterized in that: It includes a middle section fixture and end fixtures arranged at both ends of the middle section fixture, the end fixture includes an end upper guard plate and an end lower guard plate that can be buckled and fixed, and the middle section fixture includes a middle section upper guard plate and a middle section lower guard plate that can be buckled and fixed; The two ends of the middle section fixture are sleeved on the outside of the end fixture, and the two ends of the middle section fixture are matched with the end fixture by adopting a ball joint structure.

2. The highly adaptable variable angle pipeline repair and plugging fixture according to claim 1 is characterized in that: The end upper guard plate and the end lower guard plate are fixed by a set of end fastening bolts and end fastening nuts.

3. The highly adaptable variable angle pipeline repair and plugging fixture according to claim 1 is characterized in that: The middle section upper guard plate and the middle section lower guard plate are fixed by a set of middle section fastening bolts and middle section fastening nuts.

4. The highly adaptable variable angle pipeline repair and plugging fixture according to claim 1 is characterized in that: A sealing structure 1 is provided between the end fixture and the pipeline, and a sealing structure 2 is provided between the end fixture and the middle section fixture.

5. The highly adaptable variable angle pipeline repair and plugging fixture according to claim 4 is characterized in that: The sealing structure 1 includes an end sealing tensioning mechanism for an annular sealing end fixture and a pipeline, and also includes an end annular sealing strip and an end longitudinal sealing strip.

6. The highly adaptable variable angle pipeline repair and plugging fixture according to claim 4 is characterized in that: The second sealing structure comprises a middle section sealing tensioning mechanism for sealing the end clamps and the middle section clamps, and also comprises a middle section annular sealing strip and a middle section longitudinal sealing strip.

7. The highly adaptable variable angle pipeline repair and plugging fixture according to claim 1 is characterized in that: The middle section fixture is also provided with a drainage device, and the drainage device is used to discharge the medium in the middle section fixture.

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