Gas pipeline plugging device

Abstract

The utility model provides a gas pipeline plugging device which comprises a fixing plate, a lead screw nut is installed in the middle of the fixing plate in an embedded mode, a first lead screw is installed in the lead screw nut, one end of a second lead screw extends to the top end of an installation base located at the top and is fixedly connected with a first rotating wheel, and clamping assemblies are installed in two sliding grooves. The clamping assemblies are connected with the second lead screw, the plugging assembly is installed at one end of the first lead screw, the first lead screw drives the two clamping assemblies to move in the opposite direction or the opposite direction through the first rotating wheel, and therefore the clamping assemblies clamp and fix a pipeline. And in this way, the axis of the plugging head and the axes of the two hoop bodies are located on the same axis after the pipeline is clamped, so that the plugging head can effectively plug the ends of the gas pipeline, the clamping and fixing mode is simpler and more convenient, the gas pipeline plugging efficiency is effectively improved, and the practicability is high. And meanwhile, the plugging effect of the gas pipeline can be effectively improved through double plugging of the air bag matched with the plugging head.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline sealing technology, specifically relating to a gas pipeline sealing device. Background Technology

[0002] Natural gas, as a clean energy source, is widely used in various industries. It requires dedicated gas pipelines for transportation. However, with societal development, gas pipelines frequently need to be rerouted or connected. Inspection, maintenance, and replacement of gas pipelines are frequent occurrences, often requiring disassembly. To prevent accidents caused by residual gas leaks, it is often necessary to seal the pipeline openings. A search revealed that application number "202422018875.6" discloses "a pipeline sealing device for gas engineering," which describes a device "including a fixing ring, a threaded cylinder, and a sealing platform. The circumferential wall of the fixing ring has multiple threaded holes evenly distributed, each threaded hole being threadedly connected to a clamping rod for clamping the gas pipeline. The threaded cylinder..." The connecting rod is connected to the fixed ring and is coaxial with the fixed ring. The sealing platform is frustum-shaped, and the large end of the sealing platform is provided with a threaded shaft. The threaded shaft cooperates with the threaded cylinder. When the threaded shaft rotates, the sealing platform can move along the axial direction of the fixed ring so that the circumferential surface of the sealing platform abuts against the inner edge of the gas pipeline opening. The above sealing device seals the gas pipeline through the frustum-shaped sealing platform. However, the above device has some shortcomings in use: when installing the above sealing device, the operator needs to manually adjust multiple clamping rods to clamp the arc-shaped clamping plate on the pipeline surface. This process is cumbersome. Moreover, if the lengths of the threads of the multiple clamping rods are adjusted differently, the circular clamping structure formed by the multiple arc-shaped clamping plates will not be on the same axis as the axis of the sealing platform, which will affect the sealing effect of the sealing platform on the pipeline. Utility Model Content

[0003] The purpose of this invention is to provide a gas pipeline sealing device, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a gas pipeline sealing device, comprising a fixing plate, a screw nut embedded in the middle of the fixing plate, a first screw installed inside the screw nut, two symmetrical sliding grooves on the front of the fixing plate, the two sliding grooves being located at the top and bottom of the screw nut respectively, mounting seats installed at the top and bottom of one side of the front of the fixing plate, a second screw installed between the two mounting seats, the second screw being a bidirectional screw, one end of the second screw extending to the top of the mounting seat and fixedly connected to a first rotating wheel, clamping assemblies installed in both sliding grooves, the clamping assemblies being connected to the second screw, a sealing assembly installed at one end of the first screw, and a second rotating wheel fixedly connected to the other end of the first screw;

[0005] The sealing assembly includes a sealing head, one end of which is equipped with an airbag, and the other end of which is equipped with a sleeve. The surface of the sleeve has a through first opening, and one end of the first lead screw has a second opening. The sleeve is sleeved and installed on one end of the first lead screw, and the sleeve and the first lead screw are fixed by bolts installed in the first and second openings.

[0006] As a preferred technical solution of this utility model, the clamping assembly includes a slider slidably installed in a groove, a connecting rod fixedly connected to the front end of the slider, an insertion hole opened at one end of the connecting rod, a clamping mechanism inserted into the insertion hole, an adjusting rod fixedly installed on one side of the connecting rod, a lead screw hole opened at one end of the adjusting rod, and a second lead screw threadedly connected to the lead screw hole.

[0007] As a preferred technical solution of this utility model, the clamping mechanism includes a clamping body, which is fixedly connected to a plug block. The plug block is inserted into a plug hole, and a first connecting screw hole is provided at the end of the connecting rod, which passes through the plug hole. A second connecting screw hole is provided on the surface of the plug block, and the plug block and the connecting rod are fixed by bolts installed in the first and second connecting screw holes.

[0008] As a preferred technical solution of this utility model, the size of the insert block matches the size of the socket.

[0009] As a preferred technical solution of this utility model, a rubber pad is installed on the inner wall of the clamp body.

[0010] As a preferred technical solution of this utility model, the sealing head has an air passage communicating with the airbag inside, an inflation tube is installed at the opening of the air passage, and a valve is installed on the surface of the inflation tube.

[0011] As a preferred technical solution of this utility model, the sealing head is frustum-shaped and is made of rubber.

[0012] As a preferred technical solution of this utility model, the axis of the sealing head is on the same axis as the axis of the two clamp bodies when they are closed.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the first rotating wheel causes the first screw to drive the two clamping components to move towards or away from each other, thereby clamping and fixing the pipeline. Moreover, this method ensures that the axis of the sealing head and the axis of the two clamp bodies are on the same axis after clamping the pipeline. Therefore, the sealing head can effectively seal the end of the gas pipeline. Furthermore, this clamping and fixing method is simpler and more convenient, effectively improving the gas pipeline sealing efficiency. At the same time, the double sealing effect of the airbag and the sealing head can effectively improve the sealing effect of the gas pipeline. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the fixing plate in this utility model;

[0017] Figure 3 This is a schematic diagram of the clamping component in this utility model;

[0018] Figure 4 This is a schematic diagram of the sealing component in this utility model;

[0019] Figure 5 This is a cross-sectional structural diagram of the sealing component in this utility model.

[0020] In the diagram: 1. Fixing plate; 2. Lead screw nut; 3. First lead screw; 4. Slide groove; 5. Mounting base; 6. Second lead screw; 7. First rotating wheel; 8. Clamping assembly; 81. Slider; 82. Connecting rod; 83. Insertion hole; 84. Clamping mechanism; 841. Clamping body; 842. Insert block; 843. Second connecting screw hole; 844. Rubber pad; 85. Adjusting rod; 86. Lead screw hole; 87. First connecting screw hole; 9. Sealing assembly; 91. Sealing head; 92. Airbag; 93. Sleeve; 94. First opening; 95. Air passage; 96. Inflation tube; 97. Valve; 10. Second rotating wheel; 11. Second opening. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 The present invention provides the following technical solution: a gas pipeline sealing device, comprising a fixing plate 1, a screw nut 2 embedded in the middle of the fixing plate 1, a first screw 3 installed inside the screw nut 2, two symmetrical sliding grooves 4 on the front of the fixing plate 1, the two sliding grooves 4 being located at the top and bottom of the screw nut 2 respectively, mounting seats 5 being installed at the top and bottom of one side of the front of the fixing plate 1, a second screw 6 being installed between the two mounting seats 5, the second screw 6 being a bidirectional screw, one end of the second screw 6 extending to the top of the mounting seat 5 and being fixedly connected to a first rotating wheel 7, clamping components 8 being installed in both sliding grooves 4, the clamping components 8 being connected to the second screw 6, a sealing component 9 being installed at one end of the first screw 3, and a second rotating wheel 10 being fixedly connected to the other end of the first screw 3.

[0023] In this embodiment, the sealing assembly 9 includes a sealing head 91, an airbag 92 is installed at one end of the sealing head 91, and a sleeve 93 is installed at the other end of the sealing head 91. A through first opening 94 is opened on the surface of the sleeve 93, and a second opening 11 is opened at one end of the first lead screw 3. The sleeve 93 is sleeved and installed on one end of the first lead screw 3. The sleeve 93 and the first lead screw 3 are fixed by bolts installed in the first opening 94 and the second opening 11. The sealing head 91 is frustum-shaped and made of rubber.

[0024] Specifically, the second rotating wheel 10 drives the first lead screw 3 to rotate, thereby allowing the sealing head 91 to be inserted into the end of the gas pipeline. The sealing head 91 then seals the end of the gas pipeline. Moreover, the sealing head 91 and the first lead screw 3 are easy to disassemble and replace. Therefore, when the sealing head 91 is damaged or its size is not suitable, the staff can quickly replace it with a sealing head 91 of the appropriate size, thereby improving the sealing effect.

[0025] In this embodiment, the clamping assembly 8 includes a slider 81 slidably installed in the slide groove 4. A connecting rod 82 is fixedly connected to the front end of the slider 81. One end of the connecting rod 82 is provided with an insertion hole 83. A clamping mechanism 84 is inserted and installed in the insertion hole 83. An adjusting rod 85 is fixedly installed on one side of the connecting rod 82. One end of the adjusting rod 85 is provided with a lead screw hole 86. The second lead screw 6 is threadedly connected to the lead screw hole 86.

[0026] Specifically, the first rotating wheel 7 drives the second lead screw 6 to rotate. Since the second lead screw 6 is a bidirectional lead screw, the adjusting rod 85 will drive the connecting rod 82 to move towards or away from each other, thereby causing the two clamping mechanisms 84 to move towards or away from each other at the same time. Thus, the clamping mechanism 84 can clamp and fix the sealing device to the gas pipeline.

[0027] In this embodiment, the clamping mechanism 84 includes a clamping body 841, which is fixedly connected to a plug 842. The plug 842 is inserted into a socket 83. A first connecting screw hole 87 is provided at the end of the connecting rod 82, which passes through the socket 83. A second connecting screw hole is provided on the surface of the plug 842. The plug 842 and the connecting rod 82 are fixed by bolts installed in the first connecting screw hole 87 and the second connecting screw hole 843. The size of the plug 842 matches the size of the socket 83.

[0028] Specifically, the insert block 842 is inserted into the insert hole 83 and fixed by bolts threadedly connecting it to the first connecting screw hole 87 and the second connecting screw hole 843, thereby completing the installation of the clamping mechanism 84. In this way, the clamping mechanism 84 can be replaced, allowing the staff to replace the clamping body 841 of the appropriate size according to the size of the gas pipeline, so that the clamping body 841 can better clamp and fix the gas pipeline.

[0029] In this embodiment, a rubber pad 844 is installed on the inner wall of the clamp body 841.

[0030] Specifically, the rubber pad 844 can increase the friction between the clamp body 841 and the surface of the gas pipeline, thereby effectively improving the stability of the clamp body 841 and the gas pipeline.

[0031] In this embodiment, the sealing head 91 has an air passage 95 that communicates with the airbag 92 inside, an inflation tube 96 is installed at the opening of the air passage 95, and a valve 97 is installed on the surface of the inflation tube 96.

[0032] Specifically, when the sealing head 91 is inserted into the end of the gas pipeline to seal it, the airbag 92 will enter the gas pipeline along with the sealing head 91. Then, the operator can connect the inflation pipe 96 to an external air pump and open the valve 97, so that the air pump inflates the airbag 92, causing it to expand and fit tightly against the inner wall of the gas pipeline. Afterward, the valve 97 is closed to prevent gas leakage from the airbag 92. In this way, the airbag 92, together with the sealing head 91, can perform double sealing of the gas pipeline, effectively improving the sealing effect of the gas pipeline.

[0033] In this embodiment, the axis of the sealing head 91 is on the same axis as the axis of the two clamp bodies 841 when they are closed.

[0034] Specifically, this method ensures that when the clamp body 841 is clamped and fixed to the surface of the gas pipeline, the sealing head 91 is directly facing the end of the gas pipeline. This improves the sealing effect of the sealing head 91 on the gas pipeline and avoids the sealing effect being affected by the offset between the sealing head 91 and the end of the gas pipeline.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gas pipeline plugging device comprising a fixing plate (1), characterized in that: A screw nut (2) is embedded in the middle of the fixing plate (1). A first screw (3) is installed inside the screw nut (2). Two sliding grooves (4) are symmetrically opened on the front of the fixing plate (1). The two sliding grooves (4) are located at the top and bottom of the screw nut (2) respectively. Mounting seats (5) are installed at the top and bottom of one side of the front of the fixing plate (1). A second screw (6) is installed between the two mounting seats (5). The second screw (6) is a bidirectional screw. One end of the second screw (6) extends to the top of the mounting seat (5) and is fixedly connected to the first rotating wheel (7). Clamping components (8) are installed in both sliding grooves (4). The clamping components (8) are connected to the second screw (6). A sealing component (9) is installed at one end of the first screw (3). The other end of the first screw (3) is fixedly connected to the second rotating wheel (10). The sealing assembly (9) includes a sealing head (91), one end of which is equipped with an airbag (92), and the other end of which is equipped with a sleeve (93). The surface of the sleeve (93) is provided with a through first opening (94), and one end of the first lead screw (3) is provided with a second opening (11). The sleeve (93) is sleeved and installed on one end of the first lead screw (3). The sleeve (93) and the first lead screw (3) are fixed by bolts installed in the first opening (94) and the second opening (11).

2. The gas pipeline sealing device according to claim 1, characterized in that: The clamping assembly (8) includes a slider (81) slidably installed in the slide groove (4). A connecting rod (82) is fixedly connected to the front end of the slider (81). One end of the connecting rod (82) is provided with an insertion hole (83). A clamping mechanism (84) is inserted into the insertion hole (83). An adjusting rod (85) is fixedly installed on one side of the connecting rod (82). One end of the adjusting rod (85) is provided with a lead screw hole (86). The second lead screw (6) is threadedly connected to the lead screw hole (86).

3. A gas pipeline sealing device according to claim 2, characterized in that: The clamping mechanism (84) includes a clamping body (841), which is fixedly connected to a plug (842). The plug (842) is inserted into a plug hole (83). A first connecting screw hole (87) through the plug hole (83) is provided at the end of the connecting rod (82). A second connecting screw hole through the plug (842) is provided on the surface of the plug (842). The plug (842) and the connecting rod (82) are fixed by bolts installed in the first connecting screw hole (87) and the second connecting screw hole (843).

4. A gas pipeline plugging apparatus according to claim 3, wherein: The size of the plug (842) matches the size of the socket (83).

5. A gas pipeline plugging apparatus according to claim 3, wherein: A rubber pad (844) is installed on the inner wall of the clamp body (841).

6. A gas pipeline plugging apparatus according to claim 1, wherein: The sealing head (91) has an air passage (95) that communicates with the airbag (92) inside. An inflation tube (96) is installed at the opening of the air passage (95), and a valve (97) is installed on the surface of the inflation tube (96).

7. A gas pipeline plugging apparatus according to claim 1, wherein: The sealing head (91) is frustum-shaped and is made of rubber.

8. A gas pipeline plugging apparatus according to claim 3, wherein: The axis of the closure head (91) is on the same axis as the axis of the two clamp bodies (841) when they are closed.

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