Pipeline under-pressure leaking stoppage clamp capable of eliminating transverse shearing force

Abstract

A pipeline under-pressure leaking stoppage clamp capable of eliminating transverse shearing force comprises a corrugated pipe and a set of fixing frame rods, the corrugated pipe comprises a first semi-arc-shaped corrugated pipe and a second semi-arc-shaped corrugated pipe which are symmetrically arranged and connected, the first semi-arc-shaped corrugated pipe and the second semi-arc-shaped corrugated pipe are detachably assembled, and the first semi-arc-shaped corrugated pipe and the second semi-arc-shaped corrugated pipe are fixedly connected with the fixing frame rods. A pair of first fixing end plates are symmetrically arranged at the two ends of the first semi-arc-shaped corrugated pipe, an emptying release valve is arranged on one first fixing end plate, and a pair of second fixing end plates are symmetrically arranged at the two ends of the second semi-arc-shaped corrugated pipe; the device can be suitable for middle and low pressure clamps with deformation or without deformation, can eliminate transverse shearing force for pipe sections with stress deformation and bend parts, is convenient to install, improves production efficiency, effectively avoids dangerous operation conditions, improves operation safety of personnel, and is reliable in structure and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline plugging, in particular to a pipeline pressure plugging fixture that eliminates transverse shearing force. Background Art

[0002] At present, the pipeline is usually plugged under pressure by using a rigid clamp through interference fit and then injecting glue to seal. The defect of the plugging clamp under pressure has no deformation margin, and the pipeline is forced to plug the leak. This process will produce a lateral shear force for welding stress deformation and elbows, leading to safety accidents. Traditional plugging tools have no deformation margin and are not easy to plug leaks in some non-straight pipe sections and weld protrusions. In addition, some straight pipe sections have stress deformation and elbow bending sections are forced to plug leaks under pressure, which can easily cause lateral shear force to break the pipeline, or the pipeline has been subjected to lateral shear force, causing metal fatigue cracking and stress corrosion cracking. This type of plugging method under pressure leads to frequent safety accidents of pipeline pulling and cracking. This accident not only affects the normal production progress, but also has the potential risk of personal injury accidents.

[0003] Therefore, there is an urgent need for a pipeline pressure plugging fixture that can eliminate lateral shear force. The fixture can be suitable for medium and low pressure, with or without deformation. It can eliminate lateral shear force for pipe sections with stress deformation and elbows, and is easy to install. While improving production efficiency, it effectively avoids dangerous operating conditions and improves the safety of personnel operations. Summary of the invention

[0004] A pipeline pressure plugging fixture for eliminating lateral shear force can be used for medium and low pressure fixtures with or without deformation. It can eliminate lateral shear force for pipe sections with stress deformation and elbows, and is easy to install. While improving production efficiency, it effectively avoids dangerous operating conditions and improves the safety of personnel operations. It effectively avoids dangerous operating conditions and improves the safety of personnel operations. It has a reliable structure and is easy to operate.

[0005] A pipe pressure plugging fixture for eliminating transverse shear force, comprising a corrugated pipe and a set of fixed rack rods, wherein:

[0006] The bellows includes a first semi-arc bellows and a second semi-arc bellows which are symmetrically arranged and connected, the first semi-arc bellows and the second semi-arc bellows are detachably assembled, a pair of first fixed end plates are symmetrically provided at both ends of the first semi-arc bellows, one of the first fixed end plates is provided with an emptying and discharge valve, a pair of second fixed end plates are symmetrically provided at both ends of the second semi-arc bellows, one of the second fixed end plates is provided with a glue injection valve, a group of fixed holes are symmetrically provided on the upper and lower sides of the first and second fixed end plates, a group of fixed frame rods are sequentially penetrated into the fixed holes, a medium pipe is provided in the bellows, and the cavity between the bellows and the medium pipe forms a glue injection cavity.

[0007] Preferably, a semicircular notch is provided in the middle portion of the first fixed end plate and the second fixed end plate, and a circular opening is formed after the first fixed end plate and the second fixed end plate are connected. The inner diameter of the circular opening is smaller than the inner diameter of the bellows, and the inner diameter of the circular opening is equal to the outer diameter of the medium pipeline.

[0008] Preferably, a plurality of elbow flanges are provided at the connection between the first semi-arc-shaped corrugated pipe and the second semi-arc-shaped corrugated pipe for connection.

[0009] Preferably, a group of connecting holes are symmetrically provided on both sides of the connection between the first fixed end plate and the second fixed end plate, and a "U"-shaped connecting block is installed between the two connecting holes. Both ends of the "U"-shaped connecting block are installed in the connecting holes and connected to the first fixed end plate or the second fixed end plate through end plate connecting bolts.

[0010] Preferably, a group of fixing bolts are provided at the connection between the fixing frame rod and the fixing hole.

[0011] Preferably, sealing gaskets are installed at the connection points between the elbow flange and the first semi-arc bellows and the second semi-arc bellows.

[0012] Preferably, a sealing strip is provided at the connection between the first semi-arc-shaped corrugated pipe and the second semi-arc-shaped corrugated pipe.

[0013] Preferably, a sealing sheet is provided at the connection between the first fixed end plate and the second fixed end plate and at the inner side of the semicircular notch.

[0014] Beneficial effects of the utility model: the device is a pipe pressure plugging fixture that eliminates lateral shear force. By setting a pair of semi-arc bellows as a fixture, the tension of the bellows itself can solve the problems of medium pipeline sealing, leakage point control, pressure relief, diversion, fixture pre-tightening, etc., so as to achieve rapid and safe plugging. The fixture adopts a lightweight structural design, making it easy to carry and operate. This makes the plugging process more convenient and flexible. The plugging operation of the fixture is simple and easy to install. After connecting the elbow flanges on a pair of semi-arc bellows, it is only necessary to install the fixed end plate and assemble the fixed frame rod, and then inject glue into the glue injection cavity, which can quickly control the leakage point and complete the plugging within the pressure range of the pipeline medium. By setting sealing strips and sealing sheets at the joints and sealing gaskets at the bolted joints, the reliability and durability of the plugging can be ensured, and possible leakage problems can be avoided. The operation process of this clamp is simple and clear. Compared with the traditional bolt-type structure installation, the cost of this clamp is lower, which saves costs, greatly reduces the economic losses caused by leakage accidents, and improves production efficiency. It is suitable for a variety of production scenarios, enhancing its practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a side view of a pipeline pressure plugging fixture for eliminating lateral shear force according to the utility model;

[0016] Figure 2 This is a schematic diagram of an exploded view of a pipeline pressure plugging fixture for eliminating lateral shear force according to the utility model;

[0017] Figure 3 It is a schematic diagram of a first fixed end plate and a second fixed end plate of a pipeline pressure plugging fixture for eliminating lateral shear force according to the utility model;

[0018] Figure 4 This is a cross-sectional view of a pipeline pressure plugging fixture for eliminating transverse shear force according to the utility model;

[0019] Figure 5 The utility model is a pipeline pressure plugging fixture for eliminating transverse shear force Figure 1 Partial schematic diagram of A in the figure.

[0020] In the figure:

[0021] Bellows 1, first semi-arc bellows 1-1, second semi-arc bellows 1-2, glue injection cavity 2, first fixed end plate 3, emptying and discharge valve 4, second fixed end plate 5, glue injection valve 6, fixed hole 7, fixed frame rod 8, medium pipeline 9, elbow flange 11, connecting hole 12, "U"-shaped connecting block 13, end plate connecting bolts 14, fixing bolts 15, sealing strip 16, sealing sheet 17. DETAILED DESCRIPTION

[0022] In order to make the technical solution of the present utility model easier to understand, the technical solution of the present utility model is now clearly and completely described in the form of specific embodiments in combination with the accompanying drawings.

[0023] Embodiment 1:

[0024] like Figure 1-5 As shown, the utility model is a pipe pressure plugging fixture for eliminating lateral shear force, comprising a bellows 1 and a set of fixing rods 8, wherein:

[0025] The bellows 1 includes a first semi-arc bellows 1-1 and a second semi-arc bellows 1-2 which are symmetrically arranged and connected. The first semi-arc bellows 1-1 and the second semi-arc bellows 1-2 are detachably assembled. A pair of first fixed end plates 3 are symmetrically provided at both ends of the first semi-arc bellows 1-1, one of which is provided with an emptying and discharge valve 4. A pair of second fixed end plates 5 are symmetrically provided at both ends of the second semi-arc bellows 1-2, one of which is provided with a glue injection valve 6. A group of fixed holes 7 are symmetrically provided on the upper and lower sides of the first fixed end plate 3 and the second fixed end plate 5, and a group of fixed frame rods 8 are sequentially penetrated into the fixed holes 7. A medium pipe 9 is provided in the bellows 1, and the cavity between the bellows 1 and the medium pipe 9 forms a glue injection cavity 2.

[0026] A semicircular notch is provided in the middle of the first fixed end plate 3 and the second fixed end plate 5. A circular opening is formed after the first fixed end plate 3 and the second fixed end plate 5 are connected. The inner diameter of the circular opening is smaller than the inner diameter of the bellows 1, and the inner diameter of the circular opening is equal to the outer diameter of the medium pipe 9.

[0027] Embodiment 2:

[0028] like Figure 1-5 As shown, the utility model is a pipeline pressure plugging fixture for eliminating lateral shear force, wherein:

[0029] A semicircular notch is provided in the middle of the first fixed end plate 3 and the second fixed end plate 5. A circular opening is formed after the first fixed end plate 3 and the second fixed end plate 5 are connected. The inner diameter of the circular opening is smaller than the inner diameter of the bellows 1, and the inner diameter of the circular opening is equal to the outer diameter of the medium pipe 9.

[0030] A plurality of elbow flanges 11 are provided at the connection between the first semi-arc bellows 1 - 1 and the second semi-arc bellows 1 - 2 for connection.

[0031] A group of connecting holes 12 are symmetrically provided on both sides of the connection between the first fixed end plate 3 and the second fixed end plate 5, and a "U"-shaped connecting block 13 is installed between the two connecting holes 12. Both ends of the "U"-shaped connecting block 13 are installed in the connecting holes 12 and connected to the first fixed end plate 3 or the second fixed end plate 5 through end plate connecting bolts 14.

[0032] A set of fixing bolts 15 are provided at the connection between the fixing rod 8 and the fixing hole 7 .

[0033] Sealing gaskets are installed at the connection between the elbow flange 11 and the first semi-arc bellows 1-1 and the second semi-arc bellows 1-2.

[0034] A sealing strip 16 is provided at the connection between the first semi-arc bellows 1 - 1 and the second semi-arc bellows 1 - 2 .

[0035] A sealing sheet 17 is provided at the connection between the first fixed end plate 3 and the second fixed end plate 5 and at the inner side of the semicircular notch.

[0036] When the device is in use, the first semi-arc bellows 1-1 and the second semi-arc bellows 1-2, as well as the first fixed end plate 3 and the second fixed end plate 5 fixedly connected to the first semi-arc bellows 1-1 and the second semi-arc bellows 1-2 are installed on the leaking pipe. After the elbow flange 11 is equipped with a sealing gasket, confirm that the elbow flange 11 is fully assembled, push the fixture to the leakage point of the medium pipeline 9, and then lock the "U"-shaped connecting block 13 at the upper and lower sides of the first fixed end plate 3 and the second fixed end plate 5 through the end plate connecting bolts 14. After tightening, the first fixed end plate 3 and the second fixed end plate 5 are interference-fitted with the leakage point of the medium pipeline 9, and check that the sealing part is evenly tightened to ensure that there is no leakage. Open the emptying and draining valve 4, empty the gas inside the injection cavity 2, close the emptying and draining valve 4, open the injection valve 6, and inject glue at the injection valve 6. After the injection is completed and no leakage is found, the fixing bolts 15 on both sides of the fixing frame rod 8 are locked to complete the leak. When the leaking section is a curved pipe, because the first semi-arc bellows 1-1 and the second semi-arc bellows 1-2 have elastic and displacement characteristics, they can adapt well to the shape of the curved pipe, greatly improving the production efficiency while effectively avoiding dangerous operating conditions.

[0037] It should be noted that the embodiments described herein are only partial embodiments of the present invention, rather than all implementations of the present invention, and the embodiments are only exemplary, and their role is only to provide a more intuitive and clear way to understand the content of the present invention, rather than to limit the technical solutions described in the present invention. Without departing from the concept of the present invention, all other implementation methods that ordinary technicians in the field can think of without creative work, and other simple replacements and various changes to the technical solutions of the present invention, all belong to the protection scope of the present invention.

Claims

1. A pipe pressure plugging fixture for eliminating lateral shear force, characterized in that: It comprises a corrugated tube (1) and a set of fixed frame rods (8), wherein: The bellows (1) comprises a first semi-arc bellows (1-1) and a second semi-arc bellows (1-2) which are symmetrically arranged and connected. The first semi-arc bellows (1-1) and the second semi-arc bellows (1-2) are detachably assembled. A pair of first fixed end plates (3) are symmetrically arranged at both ends of the first semi-arc bellows (1-1). One of the first fixed end plates (3) is provided with an emptying and draining valve (4). A pair of second fixed end plates (5) are symmetrically arranged at both ends of the second semi-arc bellows (1-2). One of the second fixed end plates (5) is provided with a glue injection valve (6). A group of fixed holes (7) are symmetrically arranged on the upper and lower sides of the first fixed end plate (3) and the second fixed end plate (5). A group of fixed racks (8) are sequentially inserted into the fixed holes (7). A medium pipeline (9) is arranged in the bellows (1). The cavity between the bellows (1) and the medium pipeline (9) forms a glue injection cavity (2).

2. A pipe pressure plugging fixture for eliminating lateral shear force as claimed in claim 1, characterized in that: Semicircular notches are provided in the middle of the first fixed end plate (3) and the second fixed end plate (5); a circular opening is formed after the first fixed end plate (3) and the second fixed end plate (5) are connected; the inner diameter of the circular opening is smaller than the inner diameter of the corrugated pipe (1); and the inner diameter of the circular opening is equal to the outer diameter of the medium pipe (9).

3. A pipe pressure plugging fixture for eliminating lateral shear force as claimed in claim 1, characterized in that: A plurality of elbow flanges (11) are provided at the connection between the first semi-arc-shaped corrugated pipe (1-1) and the second semi-arc-shaped corrugated pipe (1-2) for connection.

4. A pipe pressure plugging fixture for eliminating lateral shear force as claimed in claim 1, characterized in that: A group of connection holes (12) are symmetrically provided on both sides of the connection between the first fixed end plate (3) and the second fixed end plate (5); a "U"-shaped connection block (13) is arranged between the two connection holes (12); both ends of the "U"-shaped connection block (13) are arranged in the connection holes (12) and are connected to the first fixed end plate (3) or the second fixed end plate (5) via end plate connection bolts (14).

5. A pipe pressure plugging fixture for eliminating lateral shear force as claimed in claim 1, characterized in that: A group of fixing bolts (15) are provided at the connection between the fixing frame rod (8) and the fixing hole (7).

6. A pipe pressure plugging fixture for eliminating lateral shear force as claimed in claim 3, characterized in that: Sealing gaskets are installed at the connection points between the elbow flange (11) and the first semi-arc-shaped corrugated pipe (1-1) and the second semi-arc-shaped corrugated pipe (1-2).

7. A pipe pressure plugging fixture for eliminating transverse shear force as claimed in claim 1, characterized in that: A sealing strip (16) is provided at the connection between the first semi-arc-shaped corrugated pipe (1-1) and the second semi-arc-shaped corrugated pipe (1-2).

8. A pipe pressure plugging fixture for eliminating lateral shear force as claimed in claim 2, characterized in that: A sealing sheet (17) is provided at the connection between the first fixed end plate (3) and the second fixed end plate (5) and at the inner side of the semicircular notch.

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