Pipeline leaking stoppage Haff joint under pressure

Abstract

The utility model discloses a pipeline under-pressure leaking stoppage Haff joint which comprises a fixing frame, a replacing mechanism is arranged on the fixing frame, the replacing mechanism comprises a clamping mechanism, a clamping plate, a rotating shaft, a sealing sleeve, a limiting ring, a limiting block, an attaching block and a fixing mechanism, the clamping mechanism is installed on the fixing frame, the rotating shaft is installed on the fixing frame, and the sealing sleeve is installed on the fixing mechanism. The sealing sleeve is attached to the interior of the clamping plate and is positioned through the limiting ring and the limiting block, the attaching block on the limiting block abuts against the clamping plate, the stability of the sealing sleeve is ensured, the replacement process is simplified through the design, the attaching precision of the sealing sleeve and the pipeline is improved, the operation time is shortened, the labor intensity is reduced, and the replacement efficiency is improved through the flexible replacement mechanism. Operators can quickly meet the requirements of different pipeline sizes, and the adaptability and the use efficiency of the equipment are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline leak plugging, and more particularly to a half joint for pipeline leak plugging under pressure. Background Art

[0002] In the existing pipeline pressure plugging technology, the half joint is a common plugging tool and is widely used in emergency maintenance of various pipeline systems. However, the existing half joint design has a significant limitation, that is, during use, it is not possible to easily replace the corresponding closing sleeve according to the size of different pipelines. This defect is mainly due to the fact that the structural design of the half joint is not flexible enough. The connection method between the closing sleeve and the half joint body is relatively fixed, and there is a lack of a mechanism for quick disassembly and replacement. Whenever encountering pipelines of different diameters that need to be plugged, operators often need to spend extra time and energy to disassemble and reinstall them, which not only increases the complexity of the maintenance work, but also prolongs the downtime and affects the normal operation of the pipeline system.

[0003] Due to the inability to easily replace the sealing sleeve, the existing half joint is not flexible and efficient in actual application. This design deficiency directly affects the convenience of use. Specifically, when faced with various pipe sizes, operators need to prepare half joints of various specifications, which increases the difficulty and cost of spare parts management; secondly, the process of replacing the sealing sleeve on site is cumbersome, which is prone to operational errors and increases maintenance risks; thirdly, long-term downtime for maintenance not only affects production efficiency, but may also cause greater economic losses. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the problems existing in the prior art, the utility model provides a half joint for sealing leaks under pressure in pipelines to solve the technical problems mentioned in the background technology.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pipeline pressure plugging half joint, including a fixing frame, a replacement mechanism is provided on the fixing frame, the replacement mechanism includes a clamping mechanism, a clamping plate, a rotating shaft, a closing sleeve, a limiting ring, a limiting block, a fitting block and a fixing mechanism, the clamping mechanism is installed on the fixing frame, the rotating shaft is installed on the fixing frame, the clamping plate is rotatably connected to the rotating shaft, the closing sleeve is fitted in the clamping plate, an embedded groove is provided on the outer wall of the closing sleeve, the clamping plate is fitted in the embedded groove, a limiting ring is installed on the outer wall of the closing sleeve, the limiting block is inserted into the limiting ring, a fitting block is installed on the limiting block, the fitting block is pressed against the clamping plate, and the fixing mechanism is cooperatively connected to the limiting block.

[0008] The utility model is further configured such that the fixing mechanism includes a positioning rod, which is mounted on a limit block, and a plurality of positioning holes are provided on the side wall of the clamping plate, into which the positioning rod is inserted. The design of the fixing mechanism ensures the stability of the fixation.

[0009] The present invention is further configured such that two positioning rods are provided, and the two positioning rods are respectively provided with rounded corners, and the rounded corner design ensures the convenience of insertion.

[0010] The utility model is further configured such that a through slot is provided on the limit block, a fixing bolt is slidably provided in the through slot, and the fixing bolt is threadedly connected in the positioning hole. The design of the through slot ensures the positioning of the fixing bolt.

[0011] The present invention is further configured such that each of the fixing bolts is coaxially provided with a handle.

[0012] The utility model is further configured such that the clamping mechanism includes a pull plate, a transverse rod and a pull sleeve, the upper and lower clamping plates are respectively rotatably connected to the pull plates, the two pull plates are rotatably connected to the transverse rod, and the pull sleeve is sleeved on the transverse rod. The design of the clamping mechanism ensures the transmission of power.

[0013] The utility model is further configured such that a hydraulic cylinder is fixedly provided on the fixing frame, and a protruding end of the hydraulic cylinder is connected to the pulling sleeve.

[0014] The utility model is further configured such that sealing rings are respectively provided at both ends of the sealing sleeve, and the sealing rings are pressed on the pipeline.

[0015] (3) Beneficial effects

[0016] Compared with the existing technology, the utility model provides a half joint for sealing leaks under pressure in pipelines, which has the following beneficial effects:

[0017] 1. The replacement mechanism is cleverly designed so that the closing sleeve can be quickly and accurately installed on the clamping plate. The mechanism includes a clamping plate, a rotating shaft, a closing sleeve, a limiting ring, a limiting block, a fitting block and other components. The clamping plate is connected to the fixing frame through the rotating shaft. The closing sleeve fits in the clamping plate and is positioned by the limiting ring and the limiting block. The fitting block on the limiting block presses against the clamping plate to ensure that the closing sleeve is stable. This design not only simplifies the replacement process, but also improves the fitting accuracy between the closing sleeve and the pipeline, reduces operation time and labor intensity. Through this flexible replacement mechanism, operators can quickly respond to the needs of different pipeline sizes, significantly improving the adaptability and utilization efficiency of the equipment.

[0018] 2. The fixing mechanism ensures the stable fixation of the limit block through components such as the positioning rod, positioning hole, fixing bolt and handle. The positioning rod is installed on the limit block and inserted into the positioning hole of the clamping plate. The fixing bolt passes through the through groove of the limit block and is threaded in the positioning hole and is conveniently operated through the handle. This design not only ensures the stability of the limit block during operation, but also makes the entire fixing process simple and quick. The reliability of the fixing mechanism effectively prevents the displacement of the sealing sleeve under high-pressure environment, ensures the durability and safety of the plugging effect, thereby improving the stability and reliability of the overall equipment.

[0019] 3. The clamping mechanism consists of a pull plate, a transverse rod and a pull sleeve. The clamping plate is precisely controlled by the drive of the hydraulic cylinder. The upper and lower clamping plates are respectively connected to the pull plates, and the pull plates are connected by a transverse rod. The pull sleeve is sleeved on the transverse rod, and the protruding end of the hydraulic cylinder is connected to the pull sleeve. When the hydraulic cylinder is started, the pull sleeve drives the pull plate, and then the clamping plates clamp each other to ensure that the closing sleeve fits tightly on the pipe. This design not only improves the clamping strength and stability, but also makes the operation process more automated and efficient. The optimized design of the clamping mechanism effectively improves the operation convenience and leak plugging effect of the equipment, and ensures the rapidity and success rate of pressure plugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the half joint for sealing leaks under pressure in the pipeline in the present invention;

[0021] Figure 2 This is a schematic structural diagram of the clamping plate and the pulling plate in the present utility model;

[0022] Figure 3 This is a schematic structural diagram of the sealing sleeve in the present utility model;

[0023] Figure 4 This is a schematic structural diagram of the bonding block in the present utility model;

[0024] Figure 5 It is a structural schematic diagram of the fixing bolt in the utility model.

[0025] In the figure: 1. Fixed frame; 2. Clamping plate; 3. Rotating shaft; 4. Closing sleeve; 5. Limiting ring; 6. Limiting block; 7. Fitting block; 8. Embedded groove; 9. Positioning rod; 10. Positioning hole; 11. Rounded corner; 12. Through groove; 13. Fixing bolt; 14. Handle; 15. Pull plate; 16. Horizontal rod; 17. Pull sleeve; 18. Hydraulic cylinder; 19. Sealing ring. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0029] See also Figure 1-5 , a half joint for sealing leaks under pressure in a pipeline comprises a fixing frame 1, a replacing mechanism is provided on the fixing frame 1, the replacing mechanism comprises a clamping mechanism, a clamping plate 2, a rotating shaft 3, a closing sleeve 4, a limiting ring 5, a limiting block 6, a fitting block 7 and a fixing mechanism, the clamping mechanism is mounted on the fixing frame 1, the rotating shaft 3 is mounted on the fixing frame 1, the clamping plate 2 is rotatably connected to the rotating shaft 3, the closing sleeve 4 fits in the clamping plate 2, an embedded groove 8 is provided on the outer wall of the closing sleeve 4, the clamping plate 2 fits in the embedded groove 8, a limiting ring 5 is mounted on the outer wall of the closing sleeve 4, the limiting block 6 is inserted into the limiting ring 5, a fitting block 7 is mounted on the limiting block 6, the fitting block 7 is pressed against the clamping plate 2, and the fixing mechanism is cooperatively connected to the limiting block 6, the fixing mechanism comprises a positioning rod 9, the positioning rod 9 is mounted on the limiting block 6, and the side wall of the clamping plate 2 A plurality of positioning holes 10 are provided on the top, and the positioning rods 9 are inserted into the positioning holes 10. There are two positioning rods 9, and the two positioning rods 9 are respectively provided with rounded corners 11. A through groove 12 is provided on the limit block 6, and a fixing bolt 13 is slidably provided in the through groove 12. The fixing bolt 13 is threadedly connected in the positioning hole 10. A handle 14 is coaxially provided on each fixing bolt 13. The clamping mechanism includes a pull plate 15, a transverse rod 16 and a pull sleeve 17. The pull plates 15 are rotatably connected on the upper and lower clamping plates 2 respectively, and the transverse rod 16 is rotatably connected between the two pull plates 15. A pull sleeve 17 is sleeved on the transverse rod 16. A hydraulic cylinder 18 is fixed on the fixed frame 1, and the protruding end of the hydraulic cylinder 18 is connected to the pull sleeve 17. Sealing rings 19 are respectively provided at both ends of the closing sleeve 4, and the sealing ring 19 is pressed on the pipeline.

[0030] In this embodiment, when plugging a pressurized pipeline, first clamp the two closing sleeves 4 on the pipeline, then start the hydraulic cylinder 18, and then drive the pulling sleeve 17 to pull backward, which is transmitted to the clamping plate 2 through the pulling plate 15 and is rotatably connected to the fixing frame 1, so that the two clamping plates 2 are clamped to each other. Since the limit ring 5 is rotatably connected to the limit block 6, and the embedded groove 8 is rotatably connected to the clamping plate 2, it can be rotated so that the two closing sleeves 4 are clamped to each other on the pipeline and sealed, thereby completing the process of plugging leaks under pressure.

[0031] More specifically, when the corresponding closing sleeve 4 needs to be replaced, the closing sleeve 4 is first placed in the clamping plate 2, and then the limit block 6 is clamped on the limit ring 5, and then the positioning rod 9 is inserted into the positioning hole 10, and then the fixing bolt 13 is passed through the through groove 12 and threaded into the positioning hole 10, thereby ensuring the positioning of the limit block 6. When multiple limit blocks 6 need to be fixed, just install multiple ones, thereby ensuring the convenience of installation.

[0032] In summary, when the overall equipment is in use or operation: when plugging a leak in a pressurized pipeline, first, the two closing sleeves 4 are clamped on the pipeline, and then the hydraulic cylinder 18 is started, and then the pulling sleeve 17 is pulled backward, and transmitted to the clamping plate 2 through the pulling plate 15, and rotatably connected to the fixing frame 1, so that the two clamping plates 2 are clamped to each other, because the limiting ring 5 is rotatably connected to the limiting block 6, and the embedded groove 8 is rotatably connected to the clamping plate 2, it can be rotated so that the two closing sleeves 4 are clamped to each other on the pipeline and sealed, thereby completing the process of plugging leaks under pressure, when the corresponding closing sleeve 4 needs to be replaced, first the closing sleeve 4 is placed in the clamping plate 2, and then the limiting block 6 is clamped on the limiting ring 5, and then the positioning rod 9 is inserted into the positioning hole 10, and then the fixing bolt 13 is threaded through the through slot 12 and connected to the positioning hole 10, thereby ensuring the positioning of the limiting block 6, when multiple limiting blocks 6 need to be fixed, just install multiple, thereby ensuring the convenience of installation.

[0033] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A half joint for sealing leaks under pressure in a pipeline, comprising a fixing frame (1), characterized by: The fixing frame (1) is provided with a replacement mechanism, and the replacement mechanism comprises a clamping mechanism, a clamping plate (2), a rotating shaft (3), a closing sleeve (4), a limiting ring (5), a limiting block (6), a fitting block (7) and a fixing mechanism, wherein the clamping mechanism is installed on the fixing frame (1), the rotating shaft (3) is installed on the fixing frame (1), the clamping plate (2) is rotatably connected to the rotating shaft (3), the closing sleeve (4) is fitted in the clamping plate (2), an inner groove (8) is provided on the outer wall of the closing sleeve (4), the clamping plate (2) is fitted in the inner groove (8), a limiting ring (5) is installed on the outer wall of the closing sleeve (4), the limiting block (6) is inserted into the limiting ring (5), a fitting block (7) is installed on the limiting block (6), the fitting block (7) is pressed against the clamping plate (2), and the fixing mechanism is cooperatively connected to the limiting block (6).

2. The pipeline pressure plugging half joint according to claim 1 is characterized by: The fixing mechanism comprises a positioning rod (9), which is mounted on a limiting block (6). A plurality of positioning holes (10) are provided on the side wall of the clamping plate (2), and the positioning rod (9) is inserted into the positioning holes (10).

3. The pipeline pressure plugging half joint according to claim 2 is characterized by: Two positioning rods (9) are provided, and the two positioning rods (9) are respectively provided with rounded corners (11).

4. The pipeline pressure plugging half joint according to claim 3 is characterized by: The limiting block (6) is provided with a through slot (12), a fixing bolt (13) is slidably provided in the through slot (12), and the fixing bolt (13) is threadedly connected in the positioning hole (10).

5. The pipeline pressure plugging half joint according to claim 4 is characterized by: A handle (14) is coaxially provided on each fixing bolt (13).

6. The pipeline pressure plugging half joint according to claim 5 is characterized by: The clamping mechanism comprises a pull plate (15), a transverse rod (16) and a pull sleeve (17); the pull plates (15) are rotatably connected on the upper and lower clamping plates (2); the transverse rod (16) is rotatably connected between the two pull plates (15); and the pull sleeve (17) is sleeved on the transverse rod (16).

7. The pipeline pressure plugging half joint according to claim 6 is characterized by: A hydraulic cylinder (18) is fixedly provided on the fixed frame (1), and the extended end of the hydraulic cylinder (18) is connected to the pulling sleeve (17).

8. The pipeline pressure plugging half joint according to claim 7 is characterized by: The two ends of the sealing sleeve (4) are respectively provided with sealing rings (19), and the sealing rings (19) are pressed on the pipeline.

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