Rapid maintenance and first-aid repair device for high-pressure oil and gas pipeline

Abstract

The utility model discloses a rapid maintenance and first-aid repair device for a high-pressure oil and gas pipeline. The rapid maintenance and first-aid repair device comprises an upper sleeve, a lower sleeve and a fixture, the longitudinal section of the upper sleeve and the longitudinal section of the lower sleeve are each of a semicircular structure, and the two sides of each semicircular structure horizontally extend outwards to form connecting positions. A groove is axially formed in the inner top surface of the upper sleeve along the central position, and the fixture is embedded into the groove; the clamp is of a square body structure, the upper end face of the clamp is of a plane structure, the lower end face of the clamp is of an arc-shaped structure sunken towards the upper end face, an O-shaped groove is formed in the center of the arc-shaped structure, and an O-shaped sealing ring is placed in the O-shaped groove. During first-aid repair, the upper sleeve and the lower sleeve wrap a to-be-repaired pipeline and are connected in a fastened mode, the O-shaped sealing ring is arranged on a leakage opening of the to-be-repaired pipeline in a sleeving mode, and a local sealing cavity is formed between the O-shaped sealing ring and the leakage opening. According to the rapid maintenance and repair device, rapid maintenance and repair can be achieved when the high-pressure oil and gas pipeline breaks down, the emergency treatment time is remarkably shortened, the emergency efficiency is improved, and safe operation of the gas pipeline is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline safety, and in particular relates to a high-pressure oil and gas pipeline rapid maintenance and repair device. Background Art

[0002] Pipeline transportation is one of the five major modes of transportation, along with railways, highways, water transportation and aviation. It is related to my country's economic and social development, energy security, public safety, and even national security. As the "main artery" of energy transportation, by the end of 2021, the total mileage of my country's oil and gas pipelines will reach 165,000 kilometers, including 31,000 kilometers of crude oil pipelines, 32,000 kilometers of refined oil pipelines, and 102,000 kilometers of natural gas pipelines. The situation of "one network across the country" for oil and gas pipelines has basically been formed. By the end of 2022, the total mileage of my country's oil and gas pipelines will reach 185,000 kilometers. With the improvement and increase of projects such as the West-East Gas Pipeline, the urban gasification rate is getting higher and higher. Tens of thousands of kilometers of oil and gas pipelines will be put into operation every year. At the same time, due to the increase in the service life of old pipelines, the inadequate quality of pipeline laying construction, the corrosiveness of the transport medium, and third-party damage, pipeline leakage accidents occur from time to time.

[0003] The number of leaking points in high-pressure pipelines that need to be excavated and repaired each year increases year by year, seriously affecting the normal and safe operation of oil and gas pipelines. The traditional method is to stop the pipeline for pipe replacement, or to replace the pipeline by opening and plugging the pipeline with pressure without stopping the pipeline. Pipeline pressure plugging construction without stopping the pipeline is a highly difficult engineering technology. It can seal and repair the pipeline without stopping the pipeline transportation. At the same time, pipeline pressure plugging has the following disadvantages: 1. High safety risk. When opening the hole under the pressure of the pipeline, if the operation is improper or the construction conditions are unstable, there will be safety hazards, such as explosion and fire. 2. Damage to the pipeline itself. When the pipeline is pressurized, if the hole is not opened properly, it will cause damage to the pipeline, resulting in pipeline leakage or explosion. 3. Restriction on the opening position. When the pipeline is opened under pressure, due to safety considerations, it is necessary to select a suitable opening position, which brings certain restrictions on the flexibility and convenience of construction. 4. Pressure opening equipment is a highly specialized skill and equipment. The processing and manufacturing of the entire equipment and the cost of pressure opening operations are high.

[0004] There are no successful rapid repair cases for high-pressure pipeline plugging in China. The plugging of low-pressure pipeline leakage is generally sealed by glue injection through fixtures, that is, after opening a hole on the fixture surface, epoxy resin glue is injected through an injection pump. Therefore, it is of great significance to design a set of fast and flexible high-pressure pipeline plugging and repair equipment to facilitate the fixed-point rapid repair and plugging of pipeline defect locations. Bringing convenience and benefits to our production and life. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides a high-pressure oil and gas pipeline rapid maintenance and repair device, which can quickly repair and repair the high-pressure oil and gas pipeline when a failure occurs, solving the problem that the leakage of the high-pressure oil and gas pipeline cannot be quickly sealed in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: to provide a high-pressure oil and gas pipeline rapid maintenance and repair device, including an upper sleeve, a lower sleeve and a clamp; the longitudinal sections of the upper sleeve and the lower sleeve are both semicircular structures, and the two sides of the semicircular structure extend horizontally outward to form a connection; the inner top surface of the upper sleeve is axially provided with a groove along the center position, and the clamp is embedded in the groove; the clamp is a square body structure, the upper end face of which is a plane structure, and the lower end face is an arc structure recessed toward the upper end face, an O-shaped groove is provided at the center position of the arc structure, and an O-shaped sealing ring is placed in the O-shaped groove; during emergency repairs, the upper sleeve and the lower sleeve are covered on the pipeline to be repaired and tightly connected, and the O-shaped sealing ring is sleeved on the leakage port of the pipeline to be repaired and forms a local sealed cavity between the leakage port.

[0007] Furthermore, in the above-mentioned high-pressure oil and gas pipeline rapid maintenance and repair device, a plurality of first bolt holes are provided on the outer top surface of the upper sleeve at positions corresponding to the clamps, and the bolts pass through the first bolt holes to press the clamps.

[0008] Furthermore, in the above-mentioned high-pressure oil and gas pipeline rapid maintenance and repair device, 9-20 first bolt holes are evenly distributed on the upper sleeve.

[0009] Furthermore, in the above-mentioned high-pressure oil and gas pipeline rapid maintenance and repair device, the fixture corresponds to the position of the oil leak on the pipeline to be repaired, and its area is 9-500 times the area of ​​the oil leak.

[0010] Furthermore, in the above-mentioned high-pressure oil and gas pipeline rapid maintenance and repair device, the curvature of the lower end surface of the clamp is adapted to and closely fits the curvature of the pipeline to be repaired.

[0011] Furthermore, in the above-mentioned high-pressure oil and gas pipeline rapid maintenance and repair device, after the upper sleeve and the lower sleeve are butted up and down, their internal shapes are adapted to the external shapes of the pipeline to be repaired.

[0012] Furthermore, in the above-mentioned high-pressure oil and gas pipeline rapid maintenance and repair device, the connection points extending outward on both sides of the upper sleeve and the lower sleeve are fastened together by a connecting piece.

[0013] The beneficial technical effects of the utility model are:

[0014] The rapid maintenance and repair device of the utility model can solve the problem of rapid repair of gas pipelines, can significantly reduce the emergency processing time of pipeline leakage, improve emergency efficiency, reduce gas outage time, reduce direct and indirect economic losses caused by pipeline failure, and ensure the safe operation of gas pipelines, which has great social significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a diagram showing the coordination between the utility model's rapid maintenance and repair device and the pipeline to be repaired;

[0016] Figure 2 This is a front view of the upper sleeve of the utility model rapid maintenance and repair device;

[0017] Figure 3 It is a top view of the upper sleeve of the rapid maintenance and repair device of the utility model;

[0018] Figure 4 It is a three-dimensional picture of the fixture;

[0019] Figure 5 This is the front view of the fixture.

[0020] In the figure:

[0021] 1- pipe to be repaired 2- upper sleeve 3- lower sleeve 4- fixture 5- groove 6- O-ring 7- O-groove 8- first bolt hole 9- second bolt hole DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] It should be noted that the terms "first", "second", etc. in the specification, claims and drawings of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence, and it should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0024] like Figure 1 As shown in the figure, a high-pressure oil and gas pipeline rapid maintenance and repair device provided by the utility model comprises an upper sleeve 2, a lower sleeve 3 and a clamp 4. The upper sleeve 2 and the lower sleeve 3 have the same structure, and their longitudinal sections are both semicircular steel plates. The two sides of the semicircular structure extend horizontally outward to form a connection, and a second bolt hole 9 is provided on the connection for connecting the two. A groove 5 is axially opened on the inner top surface of the upper sleeve 2 along the center position, and the clamp 4 is embedded in the groove, such as Figure 2The upper sleeve 2 is provided with 9-20 first bolt holes 8, preferably 16, on the outer top surface. The first bolt holes 8 correspond to the positions of the fixture 4. The bolts are inserted into the first bolt holes 8 and pressed against the fixture 4 to further tighten the fixture 4. Figure 3 The fixture 4 is a square body structure, the upper end surface of which is a flat structure, and the lower end surface is an arc structure that is concave toward the upper end surface. An O-shaped groove 7 is opened at the center position of the upper edge of the lower end surface, and an O-shaped sealing ring 6 is placed in the O-shaped groove 7. Figure 4 , 5 shown.

[0025] The clamp 4 corresponds to the position of the oil leakage port of the pipeline 1 to be repaired, and its area is 9-500 times the area of ​​the oil leakage port of the pipeline 1 to be repaired, so as to better seal the oil leakage port.

[0026] The lower end surface of the fixture 4 should be adapted to and closely fit with the outer diameter of the pipe to be repaired, and the upper end surface should be adapted to and closely fit with the top surface of the groove, thereby ensuring the sealing performance of the O-ring 6.

[0027] After the upper sleeve 2 and the lower sleeve 3 are butt-jointed, their inner shapes should match the outer shape of the pipe 1 to be repaired to facilitate fastening.

[0028] The connection points extending outwardly on both sides of the upper sleeve 2 and the lower sleeve 3 are connected by second bolts, which is convenient for fastening the fixture to ensure the sealing effect of the O-ring 6.

[0029] The process of emergency repair using the utility model is as follows:

[0030] First, select the upper sleeve 2, lower sleeve 3 and fixture 4 that meet the requirements according to the size of the pipeline to be repaired and the leakage area, install the fixture 4 in the groove 5 of the upper sleeve 2, and place the O-ring 6 in the groove 5.

[0031] Secondly, the upper sleeve 2 and the lower sleeve 3 are symmetrically wrapped on the pipe to be repaired 1. During the wrapping process, the position of the clamp 4 must correspond to the position of the leaking port, and the O-ring 6 must be wrapped on the leaking port. The upper sleeve 2 and the lower sleeve 3 are fastened together by the second bolt, and the lower end surface of the clamp is ensured to fit closely with the outer diameter of the pipe to be repaired.

[0032] Then, the first bolt is screwed into the first bolt hole 8, and its end is pressed against the fixture to further ensure that the fixture is in close contact with the outer wall of the pipeline to be repaired. Thus, a local sealing cavity is formed between the O-ring and the leaking port, and the O-ring seals the leaking port.

[0033] Finally, an experiment was conducted to verify that the experimental fixture corresponded to the oil leak on the pipeline to be repaired, and its area was 9 times the area of ​​the oil leak. The experiment proved that the leak position could withstand 12MPa water pressure shock without leakage. The entire repair process took 1 hour, which was short and efficient, solving the problem of rapid repair of gas pipelines.

[0034] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art can make equivalent substitutions or changes based on the technical solutions and utility model concepts disclosed in the utility model, and the obtained technical solutions should be included in the protection scope of the utility model.

Claims

1. A high-pressure oil and gas pipeline rapid maintenance and repair device, characterized by: The invention comprises an upper sleeve (2), a lower sleeve (3) and a clamp (4); the longitudinal sections of the upper sleeve (2) and the lower sleeve (3) are both semicircular structures, and the two sides of the semicircular structure extend horizontally outward to form a connection; the inner top surface of the upper sleeve (2) is provided with a groove (5) axially along the center position, and the clamp is embedded in the groove; the clamp (4) is a square body structure, the upper end surface of which is a plane structure, and the lower end surface is an arc structure recessed toward the upper end surface, and an O-shaped groove (7) is provided at the center position of the arc structure, and an O-shaped sealing ring is placed in the O-shaped groove (7); during emergency repair, the upper sleeve (2) and the lower sleeve (3) are covered on the pipeline to be repaired (1) and are tightly connected, and the O-shaped sealing ring (6) is covered on the leakage port of the pipeline to be repaired (1) and forms a local sealing cavity between the leakage port.

2. A high-pressure oil and gas pipeline rapid maintenance and repair device as claimed in claim 1, characterized in that: A plurality of first bolt holes (8) are provided on the outer top surface of the upper sleeve (2) at positions corresponding to the clamp (4), and bolts pass through the first bolt holes (8) to press the clamp (4).

3. A high-pressure oil and gas pipeline rapid maintenance and repair device as claimed in claim 2, characterized in that: 9 to 20 first bolt holes (8) are evenly distributed on the upper sleeve (2).

4. A high-pressure oil and gas pipeline rapid maintenance and repair device as claimed in any one of claims 1 to 3, characterized in that: The clamp (4) corresponds to the position of the oil leak on the pipeline (1) to be repaired, and its area is 9-500 times the area of ​​the oil leak.

5. A high-pressure oil and gas pipeline rapid maintenance and repair device as claimed in claim 4, characterized in that: The curvature of the lower end surface of the clamp (4) matches and fits tightly to the curvature of the pipeline (1) to be repaired.

6. A high-pressure oil and gas pipeline rapid maintenance and repair device as claimed in claim 5, characterized in that: After the upper sleeve (2) and the lower sleeve (3) are butt-jointed, their internal shapes are adapted to the external shape of the pipeline (1) to be repaired.

7. A high-pressure oil and gas pipeline rapid maintenance and repair device as claimed in claim 6, characterized in that: The connecting parts extending outwards on both sides of the upper sleeve (2) and the lower sleeve (3) are fastened together by a connecting piece.

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