Pipeline under-pressure blocking mechanism

Abstract

The utility model relates to the technical field of pipeline under-pressure blocking, and discloses a pipeline under-pressure blocking mechanism which comprises a blocking assembly located above a pipeline, the upper portion of the surface of the pipeline is communicated with a short pipe, the blocking assembly comprises an open valve and a balloon blocker, and the bottom of the open valve and the top of the short pipe are fixedly installed through a bolt; according to the pipeline under-pressure blocking mechanism, a balloon blocker is placed on an open valve, a threaded rod is rotated to drive two threaded sleeves to move towards the middle, the two threaded sleeves drive two limiting plates to move towards the middle through a connecting plate, the two limiting plates can clamp the front side and the rear side of the open valve, and a limiting frame is fixed to the open valve; the balloon blocker is limited on the open valve through the connecting frame and the limiting frame, so that the balloon blocker does not need to be supported and then a bolt is not needed to be rotated, the stable effect of the balloon blocker can be well guaranteed, and the balloon blocker is more convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline pressure blocking, in particular to a pipeline pressure blocking mechanism. Background Art

[0002] In the prior art, if it is necessary to repair, replace valves or replace pipelines on an industrial liquid or gas pipeline that is normally running under pressure, the pipeline must be blocked under pressure first, that is, the pipeline must be sealed and stopped from running, and all the media must be released before repairs, branch pipes, valves or pipelines can be carried out.

[0003] At present, when blocking a pipeline under pressure, it is necessary to weld a short pipe on the pipeline, install the valve on the short pipe, make a hole on the pipeline with a hole opener, and then install the balloon blocker on the valve with bolts.

[0004] When a pipeline is blocked by a balloon blocker, the balloon blocker needs to be installed on the open valve through multiple bolts, and the bolts need to be turned to remove it after use. When the balloon blocker is placed on the open valve and the bolts are turned, the balloon blocker needs to be supported to prevent it from falling, and multiple screw holes need to be aligned to install the bolts, which results in a lot of time and energy being consumed and the pipeline pressure blocking is slow. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pipeline pressure blocking mechanism, which solves the problem of needing to support the balloon blocker to prevent it from falling and align multiple screw holes to install bolts, which results in a lot of time and effort.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a pipeline pressure blocking mechanism, including a blocking component located above the pipeline, a short tube is connected above the pipeline surface, the blocking component includes an opening valve and a balloon blocker, the bottom of the opening valve and the top of the short tube are fixedly installed by bolts, the balloon blocker is arranged above the opening valve, one side of the balloon blocker is fixedly connected to a connecting frame, the bottom of the connecting frame is fixedly connected to a limiting frame, the rear part of the inner cavity of the limiting frame is rotatably connected to a threaded rod through a bearing, one end of the threaded rod passes through the limiting frame and extends to the outside of the limiting frame, the front and rear parts of the threaded rod surface and the inside of the limiting frame are threadedly connected with a threaded sleeve, a sliding groove is provided on one side of the inner cavity of the limiting frame, the interior of the sliding groove is slidably connected to one side of the threaded sleeve surface through a slider, the other side of the threaded sleeve surface is fixedly connected to a connecting plate, and one side of the connecting plate is fixedly connected to a limiting plate adapted to the opening valve.

[0007] Preferably, a cover plate is fixedly mounted on the top of the balloon blocker by means of bolts, and a sliding tube is slidably connected to the top of the cover plate by means of an opening.

[0008] Preferably, one end of the sliding tube located inside the balloon blocker is connected to an air bag, and the other end of the sliding tube is connected to an air inlet nozzle.

[0009] Preferably, a plurality of screw holes are provided on the top of the valve opening and the bottom of the balloon occluder.

[0010] Preferably, an alignment plate is fixedly connected to one side of the bottom of the connecting frame.

[0011] Compared with the existing technology, it has the following beneficial effects:

[0012] (1) The utility model places the balloon blocker on the open valve, and rotates the threaded rod to drive the two threaded sleeves to move toward the middle. The two threaded sleeves drive the two limit plates to move toward the middle through the connecting plate. The two limit plates are clamped on the front and rear sides of the open valve, and the limit frame is fixed on the open valve, so that the balloon blocker is limited on the open valve through the connecting frame and the limit frame. There is no need to support the balloon blocker and then rotate the bolt, which can well ensure the stability of the balloon blocker and make the installation of the balloon blocker more convenient.

[0013] (2) The utility model places the alignment plate on the sliding tube close to the open valve, so that the balloon blocker is horizontally aligned with the open valve through the alignment plate, and then two limit plates are clamped on the front and rear sides of the open valve to align the balloon blocker with the open valve. The screw holes of the balloon blocker and the open valve can be easily aligned, making it more convenient to install the balloon blocker on the open valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the external structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of the valve opening and balloon occluder of the utility model.

[0016] Figure 3 It is a structural schematic diagram of the connecting frame, the limiting frame, the threaded rod, the threaded sleeve, the sliding groove, the connecting plate, the limiting plate and the alignment plate of the utility model.

[0017] Figure 4 It is a bottom view of the internal structure of the pipeline, short pipe and open valve of the utility model.

[0018] In the figure: 1. pipeline; 2. blocking assembly; 3. short pipe; 4. connecting frame; 5. limiting frame; 6. threaded rod; 7. threaded sleeve; 8. slide groove; 9. connecting plate; 10. limiting plate; 11. alignment plate; 12. screw hole; 21. open valve; 22. balloon blocker; 23. cover plate; 24. sliding tube; 25. air bag; 26. air inlet nozzle. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figure 1-4 The utility model provides a technical solution: a pipeline pressure blocking mechanism, including a blocking component 2 located above the pipeline 1, a short tube 3 is connected above the surface of the pipeline 1, the blocking component 2 includes an open valve 21 and a balloon blocker 22, the bottom of the open valve 21 and the top of the short tube 3 are fixedly installed by bolts, the balloon blocker 22 is arranged above the open valve 21, one side of the balloon blocker 22 is fixedly connected to a connecting frame 4, the bottom of the connecting frame 4 is fixedly connected to a limiting frame 5, the rear part of the inner cavity of the limiting frame 5 is rotatably connected to a threaded rod 6 through a bearing, and the threaded rod The threads on the front and rear sides of the surface of 6 are in opposite directions. One end of the threaded rod 6 penetrates the limit frame 5 and extends to the outside of the limit frame 5. The end of the threaded rod 6 extending to the outside of the limit frame 5 is fixedly connected with a handle. The front and rear parts of the surface of the threaded rod 6 and the inside of the limit frame 5 are threadedly connected with a threaded sleeve 7. A slide groove 8 is provided on one side of the inner cavity of the limit frame 5. The inside of the slide groove 8 is slidably connected to one side of the surface of the threaded sleeve 7 through a slider. A connecting plate 9 is fixedly connected to the other side of the surface of the threaded sleeve 7. A limiting plate 10 adapted to the opening valve 21 is fixedly connected to one side of the connecting plate 9.

[0021] Furthermore, in order to facilitate the blocking of the inside of the pipeline 1, a cover plate 23 is fixedly installed on the top of the balloon blocker 22 by bolts, and a sliding tube 24 is slidably connected to the top of the cover plate 23 through an opening, one end of the sliding tube 24 is located inside the balloon blocker 22 and is connected to an air bag 25, and the other end of the sliding tube 24 is connected to an air inlet nozzle 26, and a plurality of screw holes 12 are provided on the top of the open valve 21 and the bottom of the balloon blocker 22.

[0022] It should be noted that the sliding tube 24 is driven by external power to move up and down.

[0023] Furthermore, in order to facilitate the front-to-back horizontal alignment of the open valve 21 and the balloon blocker 22 , an alignment plate 11 is fixedly connected to one side of the bottom of the connecting frame 4 .

[0024] When in use, a short tube 3 is welded on the pipeline 1 in advance, and the valve opening 21 is installed on the short tube 3 through multiple bolts, and a hole is punched at the bottom of the short tube 3 through a hole opener to extend it to the inside of the pipeline 1, and then the balloon blocker 22 is placed on the valve opening 21, so that the alignment plate 11 is close to the left side of the valve opening 21, so that the balloon blocker 22 is horizontally aligned with the front and rear of the valve opening 21, and then the threaded rod 6 is rotated to drive the two threaded sleeves 7 to move toward the middle, and the two threaded sleeves 7 drive the two connecting plates 9 to move toward the middle, and the two connecting plates 9 will drive the two limiting plates 10 to move toward the middle, so that the two limiting plates 10 are clamped in the middle on the front and rear sides of the valve opening 21, and at the same time, the balloon blocker 22 will be gradually driven by the limiting frame 5 to align horizontally with the valve opening 21 left and right, so that the balloon blocker 22 is limited on the valve opening 21, and the screw hole 12 on the balloon blocker 22 will be aligned with the screw hole 12 on the valve opening 21, and then the bolt is passed through the screw hole 12 to install the valve opening 21 and the balloon blocker 22;

[0025] By driving the sliding tube 24 to move downward, the sliding tube 24 drives the airbag 25 to move downward into the pipeline 1, and the sliding tube 24 is ventilated through the air inlet nozzle 26. The gas enters the airbag 25, causing the airbag 25 to gradually expand and block the internal space of the pipeline 1, thereby blocking one side of the internal space of the pipeline 1, so that the damaged valve or pipeline on the other side of the pipeline 1 can be disassembled and repaired.

Claims

1. A pipeline pressure blocking mechanism, comprising a blocking component (2) located above a pipeline (1), characterized in that: A short tube (3) is connected above the surface of the pipeline (1); the blocking assembly (2) comprises an open valve (21) and a balloon blocker (22); the bottom of the open valve (21) and the top of the short tube (3) are fixedly installed by bolts; the balloon blocker (22) is arranged above the open valve (21); a connecting frame (4) is fixedly connected to one side of the balloon blocker (22); the bottom of the connecting frame (4) is fixedly connected to a limiting frame (5); the rear part of the inner cavity of the limiting frame (5) is rotatably connected to a threaded rod (6) via a bearing; One end of the threaded rod (6) passes through the limit frame (5) and extends to the outside of the limit frame (5); the front and rear parts of the surface of the threaded rod (6) and located inside the limit frame (5) are threadedly connected to a threaded sleeve (7); a slide groove (8) is provided on one side of the inner cavity of the limit frame (5); the interior of the slide groove (8) is slidably connected to one side of the surface of the threaded sleeve (7) through a slider; a connecting plate (9) is fixedly connected to the other side of the surface of the threaded sleeve (7); and a limit plate (10) adapted to the opening valve (21) is fixedly connected to one side of the connecting plate (9).

2. A pipeline pressure blocking mechanism according to claim 1, characterized in that: A cover plate (23) is fixedly mounted on the top of the balloon blocker (22) by means of bolts, and a sliding tube (24) is slidably connected to the top of the cover plate (23) by means of an opening.

3. A pipeline pressure blocking mechanism according to claim 2, characterized in that: One end of the sliding tube (24) located inside the balloon blocker (22) is connected to an air bag (25), and the other end of the sliding tube (24) is connected to an air inlet nozzle (26).

4. A pipeline pressure blocking mechanism according to claim 1, characterized in that: A plurality of screw holes (12) are provided on the top of the open valve (21) and the bottom of the balloon blocker (22).

5. The pipeline pressure blocking mechanism according to claim 1, characterized in that: An alignment plate (11) is fixedly connected to one side of the bottom of the connecting frame (4).

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