Plugging device for gas pipeline

Abstract

The utility model relates to a gas pipeline plugging device which comprises a pressing mechanism and a rotary knob part, the pressing mechanism comprises a clamping assembly and a fixing block, the clamping assembly is arranged in the fixing block, the clamping assembly is provided with two symmetrically-arranged clamping faces, and a gas pipeline can be arranged between the two clamping faces; the rotary knob piece is in threaded connection with the fixing block, and when the rotary knob piece moves towards the fixing block, the two clamping faces move oppositely and are attached to the outer wall of the gas pipeline so as to block the leakage position of the pipeline. By means of the design, the poor sealing effect caused by complex installation of a traditional plugging device is avoided. In addition, once the gas pipeline leaks, the flammable and explosive characteristics of the gas can directly threaten life and property safety. According to the device, a leakage point can be quickly blocked under the condition that the main valve does not need to be cut off, and safety guarantee is provided for follow-up maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas pipeline, in particular to a plugging device for gas pipeline. BACKGROUND

[0002] As a key facility in the urban gas transmission and distribution system, the gas pipeline is mainly laid with hard pipes. When a local leakage occurs in the gas pipeline, the usual way of handling is to close the total valve to cut off the gas source. However, in actual operation, the position of the total valve may be difficult to determine quickly, and even may be far away from the leakage point, increasing the complexity and time cost of the repair. Therefore, in order to avoid further spread of gas leakage, it is usually necessary to temporarily plug the leakage part of the pipeline.

[0003] In view of the above problems, it is urgent to develop a plugging device for gas pipeline, which can quickly and safely plug the leakage part of the gas pipeline, has the advantages of simple operation, reliable plugging, no damage to the pipeline and adaptation to complex working conditions, thereby effectively improving the efficiency and safety of the later gas pipeline repair. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to overcome the deficiencies in the prior art, and to provide a plugging device for gas pipeline for quickly and safely plugging the leakage part of the gas pipeline.

[0005] The present application is achieved by the following technical solutions:

[0006] The present application provides a plugging device for gas pipeline, comprising:

[0007] The pressing mechanism comprises a clamping assembly and a fixed block, the clamping assembly is arranged in the fixed block, the clamping assembly has two symmetrical clamping surfaces, and the gas pipeline can be arranged between the two clamping surfaces;

[0008] The knob is threadedly connected with the fixed block, when the knob moves towards the fixed block, the two clamping surfaces move towards each other and fit the outer wall of the gas pipeline to plug the leakage position of the pipeline.

[0009] In an embodiment of the present application, a tapered groove is formed at one end of the knob towards the clamping assembly, a first inclined surface is arranged at the position of the tapered groove, the clamping assembly comprises two clamping pieces, each clamping piece has one clamping surface, the diameter of the tapered groove gradually increases along the direction close to the clamping assembly, a second inclined surface is arranged on the side of the two clamping pieces away from each other, and the first inclined surface fits with the second inclined surface.

[0010] When the knob moves towards the fixed block, the two clamping members extend into the tapered slot, the first inclined surface moves towards the direction of the two second inclined surfaces, the clamping surfaces of the two clamping members move towards each other and are in close contact with the outer wall of the gas pipeline to seal the leakage position of the pipeline.

[0011] In an embodiment of the present application, the clamping assembly further comprises a reset member, one end of the reset member is in abutment with one of the clamping members, and the other end is in abutment with the other clamping member.

[0012] When the knob moves away from the fixed block, the first inclined surface moves away from the two second inclined surfaces, and the reset member drives the clamping surfaces of the two clamping members to move away from each other and away from the outer wall of the gas pipeline.

[0013] In an embodiment of the present application, when the first inclined surface moves away from the two second inclined surfaces, the reset member drives the two clamping members to abut against the inner wall of the fixed block.

[0014] In an embodiment of the present application, the side walls of the two clamping members along the moving direction thereof are provided with clamping grooves, the inner wall of the fixed block is provided with a clamping block, and the clamping block is clamped in the clamping groove to limit the two clamping members in the fixed block and guide the two clamping members to move along the extension direction of the clamping groove.

[0015] In an embodiment of the present application, the clamping assembly further comprises a rubber layer, and the rubber layer is arranged on the clamping surface.

[0016] In an embodiment of the present application, the thickness of the rubber layer gradually decreases from the center of the clamping surface to both sides to increase the contact area of the rubber layer with the outer wall of the gas pipeline.

[0017] In an embodiment of the present application, the clamping surface is in an arc structure to be in close contact with the outer wall of the gas pipeline.

[0018] In an embodiment of the present application, the knob is provided with a hexagonal hole, and the axial direction of the hexagonal hole is perpendicular to the moving direction of the knob.

[0019] In an embodiment of the present application, the fixed block is provided with a handle to facilitate holding the handle.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] The pressing mechanism comprises a clamping assembly and a fixed block, the clamping assembly is arranged in the fixed block, the clamping assembly has two symmetrical clamping surfaces, the gas pipeline can be arranged between the two clamping surfaces, and stable clamping force can be provided for the gas pipeline. The knob is threadedly connected with the fixed block, when the knob moves towards the fixed block, the two clamping surfaces move towards each other, and finally adhere to the outer wall of the gas pipeline to block the leakage position of the pipeline. This design avoids the poor sealing effect caused by the complex installation of the traditional blocking device. In addition, once the gas pipeline leaks, the flammable and explosive characteristics of the gas will directly threaten the safety of life and property. The device can quickly block the leakage point without cutting off the main valve, providing safety protection for subsequent maintenance.

[0022] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and achieved by the structures indicated in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0024] Figure 1 The overall perspective view of the gas pipeline blocking device provided by an embodiment of the present application is shown in the figure.

[0025] Figure 2 The exploded perspective view of the gas pipeline blocking device provided by an embodiment of the present application is shown in the figure.

[0026] Figure 3 The overall side view of the gas pipeline blocking device provided by an embodiment of the present application is shown in the figure.

[0027] Figure 4 The P-P section view of the gas pipeline blocking device provided by an embodiment of the present application is shown in the figure. Figure 3

[0028] Explanation of reference signs:

[0029] 10, gas pipeline blocking device; 100, pressing mechanism; 110, clamping assembly; 111, clamping piece; 1111, clamping surface; 1112, second inclined surface; 1113, clamping groove; 112, reset piece; 120, fixed block; 122, handle; 200, knob; 210, conical groove; 220, first inclined surface; 230, hexagonal hole. DETAILED DESCRIPTION ​

[0030] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall into the scope of the present application.

[0031] In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall into the scope of the present application.

[0032] It should be noted that when an element is referred to as being “fixed” or “disposed” on another component, it can be directly on the other component or indirectly on the other component; when a component is referred to as being “connected” to another component, it can be directly connected to the other component or indirectly connected to the other component.

[0033] It should be understood that the terms “length”, “width”, “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application.

[0034] In addition, the terms “first”, “second” are only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with “first”, “second” can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of “multiple”, “several” is two or more, unless otherwise explicitly and specifically limited.

[0035] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings of the present disclosure are merely intended to facilitate the understanding of the present disclosure and are not intended to limit the scope of the present disclosure. Any modification, change in proportion or adjustment in size of the structures, as long as it does not affect the effects and purposes of the present disclosure, shall still fall within the scope of the present disclosure.

[0036] Please refer to Figures 1 to 4 The present disclosure provides a plugging device 10 for a gas pipeline, which comprises a pressing mechanism 100 and a knob 200. The pressing mechanism 100 comprises a clamping assembly 110 and a fixed block 120. The clamping assembly 110 is arranged in the fixed block 120 and has two symmetrical clamping surfaces 1111. A gas pipeline can be arranged between the two clamping surfaces 1111. The knob 200 is threadedly connected with the fixed block 120. When the knob 200 moves towards the fixed block 120, the two clamping surfaces 1111 move towards each other and are in close contact with the outer wall of the gas pipeline to plug the leakage position of the pipeline.

[0037] Specifically, the pressing mechanism 100 is composed of the clamping assembly 110 and the fixed block 120. The clamping assembly 110 is arranged in the fixed block 120 and has two symmetrical clamping surfaces 1111, which can provide a stable clamping force for the gas pipeline. The position and shape of the clamping surface 1111 are carefully designed to ensure close contact with the outer wall of the gas pipeline during clamping, thereby achieving efficient plugging. The knob 200 is threadedly connected with the fixed block 120. The rotation of the knob 200 can drive the clamping surface 1111 to move. When the knob 200 moves towards the fixed block 120, the two clamping surfaces 1111 of the clamping assembly 110 move towards each other and finally come into close contact with the outer wall of the gas pipeline to plug the leakage position of the pipeline. This design avoids the poor sealing effect caused by the complex installation of traditional plugging devices. In addition, once the gas pipeline leaks, the flammable and explosive characteristics of the gas will directly threaten the safety of life and property. The device can quickly plug the leakage point without cutting off the main valve, providing safety protection for subsequent maintenance.

[0038] Please refer to Figure 2 and Figure 4In an embodiment, the knob 200 is provided with a tapered slot 210 at one end thereof facing the clamping assembly 110, and the knob 200 is provided with a first inclined surface 220 at the position of the tapered slot 210. The clamping assembly 110 includes two clamping members 111, each of which has a clamping surface 1111. The diameter of the tapered slot 210 gradually increases in the direction close to the clamping assembly 110. The two clamping members 111 are provided with second inclined surfaces 1112 on the sides thereof facing away from each other, and the first inclined surface 220 is in abutment with the second inclined surfaces 1112. When the knob 200 moves in the direction of the fixed block 120, the two clamping members 111 extend into the tapered slot 210, the first inclined surface 220 moves in the direction of the two second inclined surfaces 1112, the clamping surfaces 1111 of the two clamping members 111 move towards each other, and abut against the outer wall of the gas pipeline to seal the leakage position of the pipeline.

[0039] Specifically, the knob 200 is provided with a tapered slot 210 at one end thereof facing the clamping assembly 110, and the inner wall of the tapered slot 210 is provided with a first inclined surface 220. The clamping assembly 110 includes two clamping members 111, each of which has a clamping surface 1111 for abutting against the outer wall of the gas pipeline. Meanwhile, the two clamping members 111 are provided with second inclined surfaces 1112 on the sides thereof facing away from each other, and the first inclined surface 220 is in abutment with the second inclined surfaces 1112. The diameter of the tapered slot 210 gradually increases in the direction close to the clamping assembly 110. When the knob 200 moves in the direction of the fixed block 120, the two clamping members 111 extend into the tapered slot 210, the first inclined surface 220 pushes the second inclined surfaces 1112, the clamping surfaces 1111 of the two clamping members 111 move towards each other, and abut against the outer wall of the gas pipeline to seal the leakage position of the pipeline.

[0040] Please refer to Figure 2 and Figure 4 In an embodiment, the clamping assembly 110 further includes a reset member 112, one end of the reset member 112 is in abutment with one of the clamping members 111, and the other end thereof is in abutment with the other clamping member 111. When the knob 200 moves in the direction away from the fixed block 120, the first inclined surface 220 moves in the direction away from the two second inclined surfaces 1112, and the reset member 112 drives the clamping surfaces 1111 of the two clamping members 111 to move away from each other and away from the outer wall of the gas pipeline.

[0041] Specifically, by providing the reset member 112, the clamping assembly 110 has an automatic reset function. When the knob 200 moves in the direction away from the fixed block 120, the first inclined surface 220 is separated from the second inclined surfaces 1112, and the reset member 112 generates a rebound force to drive the clamping surfaces 1111 of the two clamping members 111 to move away from each other and automatically away from the outer wall of the gas pipeline, so as to ensure that the device can quickly return to the initial state after the sealing is released, and provide convenience for repeated use.

[0042] Please refer toFigure 2 And Figure 4 In an embodiment, when the first inclined surface 220 is away from the second inclined surfaces 1112 of the two clamping members 111, the reset member 112 drives the two clamping members 111 to abut against the inner wall of the fixed block 120.

[0043] Specifically, when the first inclined surface 220 is away from the second inclined surfaces 1112 of the two clamping members 111, the elastic force generated by the reset member 112 pushes the two clamping members 111 to the inner wall of the fixed block 120, ensuring that the clamping members 111 are stably positioned in the fixed block 120 in the non-use state.

[0044] Please refer to Figure 2 In an embodiment, the side wall of the two clamping members 111 along the moving direction is provided with a clamping groove 1113, and the inner wall of the fixed block 120 is provided with a clamping block (not marked in the figure), which is clamped in the clamping groove 1113, so as to limit the two clamping members 111 in the fixed block 120 and guide the two clamping members 111 to move along the extension direction of the clamping groove 1113.

[0045] Specifically, the clamping block is clamped in the clamping groove 1113, which can effectively guide the clamping member 111 to move along the extension direction of the clamping groove 1113, ensure the movement path of the clamping member 111 is controlled, avoid the clamping member 111 from deviating or shaking during the movement, and guide the two clamping members 111 to move along the extension direction of the clamping groove 1113.

[0046] Please refer to Figure 2 And Figure 4 In an embodiment, the clamping assembly 110 further comprises a rubber layer (not shown in the figure), which is arranged on the clamping surface 1111. The thickness of the rubber layer gradually decreases from the center of the clamping surface 1111 to both sides, so as to increase the contact area between the rubber layer and the outer wall of the gas pipeline.

[0047] Specifically, the rubber layer design on the clamping surface 1111 further improves the sealing performance and adaptability of the sealing device. The rubber layer covers the clamping surface 1111, which can provide flexible contact and form better adhesion between the device and the outer wall of the gas pipeline. In addition, the structure design that the thickness of the rubber layer gradually decreases from the center of the clamping surface 1111 to both sides can increase the contact area and more evenly distribute the clamping force during the sealing process, so as to ensure that the surrounding of the leakage point is fully sealed and avoid damage caused by the direct contact between the hard clamping surface 1111 and the pipeline.

[0048] Please refer to Figure 1 In an embodiment, the clamping surface 1111 is an arc-shaped structure, so as to be adhesion with the outer wall of the gas pipeline.

[0049] Specifically, the arc-shaped clamping surface 1111 can be in contact with the outer wall of the gas pipeline in a larger range, so that the sealing device provides uniform stress distribution during clamping, thereby improving the sealing performance.

[0050] Please refer to Figure 2 In an embodiment, the knob 200 is provided with a hexagonal hole 230, and the axial direction of the hexagonal hole 230 is perpendicular to the moving direction of the knob 200.

[0051] Specifically, the hexagonal hole 230 is used to cooperate with an external tool to rotate the knob 200, so as to adjust the moving position of the knob 200.

[0052] Please refer to Figure 1 In an embodiment, the fixed block 120 is provided with a handle 122, so as to facilitate hand holding of the handle 122.

[0053] Specifically, the fixed block 120 is provided with the handle 122, so as to facilitate the operator to hold and control during installation or disassembly of the device, thereby improving the convenience and stability of use.

[0054] The above description of disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plugging device for a gas pipeline, characterized in that The utility model relates to a gas pipeline leak sealing device, comprising: a pressing mechanism, including a clamping assembly and a fixed block, the clamping assembly is arranged in the fixed block, the clamping assembly has two symmetrical clamping surfaces, and a gas pipeline can be arranged between the two clamping surfaces; a knob is threadedly connected with the fixed block, when the knob moves towards the fixed block, the two clamping surfaces move towards each other and fit the outer wall of the gas pipeline to seal the pipeline leakage position.

2. A gas pipeline blanking device according to claim 1, characterised in that, The end of the knob towards the clamping assembly is provided with a tapered slot, the knob is provided with a first inclined surface at the position of the tapered slot, the clamping assembly includes two clamping pieces, each clamping piece has a clamping surface, the diameter of the tapered slot gradually increases along the direction close to the clamping assembly, the side of the two clamping pieces away from each other is provided with a second inclined surface, and the first inclined surface fits the second inclined surface. When the knob moves towards the fixed block, the two clamping pieces extend into the tapered slot, the first inclined surface moves towards the direction of the two second inclined surfaces, so that the clamping surfaces of the two clamping pieces move towards each other and fit the outer wall of the gas pipeline to seal the pipeline leakage position.

3. A gas pipeline blanking device according to claim 2, wherein The clamping assembly further includes a reset piece, one end of the reset piece abuts against one of the clamping pieces, and the other end abuts against the other clamping piece; When the knob moves away from the fixed block, the first inclined surface moves away from the two second inclined surfaces, and at the same time, the reset piece drives the clamping surfaces of the two clamping pieces to move away from each other and away from the outer wall of the gas pipeline.

4. A gas pipeline blanking device as claimed in claim 3, characterised in that, When the first inclined surface moves away from the two second inclined surfaces, the reset piece drives the two clamping pieces to abut against the inner wall of the fixed block.

5. A gas pipeline blanking device as claimed in claim 4, characterised in that, The side walls of the two clamping pieces along the moving direction are provided with clamping grooves, the inner wall of the fixed block is provided with clamping blocks, the clamping blocks are clamped in the clamping grooves to limit the two clamping pieces in the fixed block and guide the two clamping pieces to move along the extension direction of the clamping grooves.

6. The gas piping plugging apparatus as recited in claim 1, wherein The clamping assembly further includes a rubber layer, and the rubber layer is arranged on the clamping surface.

7. A gas pipeline blanking device as claimed in claim 6, characterised in that, The thickness of the rubber layer gradually decreases from the center of the clamping surface to both sides to increase the fitting area of the rubber layer and the outer wall of the gas pipeline.

8. A gas pipeline blanking device as claimed in claim 6, characterised in that, The clamping surface is an arc structure to fit the outer wall of the gas pipeline.

9. The gas piping plugging apparatus as recited in claim 1, wherein The knob is provided with a hexagonal hole, and the axial direction of the hexagonal hole is perpendicular to the moving direction of the knob.

10. The gas piping plugging apparatus as recited in claim 1, wherein The fixed block is provided with a handle to facilitate holding the handle.

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