Quick plugging device for pressure test

Abstract

The utility model discloses a quick plugging device for pressure test, which comprises a mounting seat, a movable rod, an elastic sealing sleeve, a limiting part, an extrusion part and a driving piece, the movable rod can be movably arranged on the mounting seat along the axial direction of the movable rod, the elastic sealing sleeve is sleeved on the outer side of the movable rod, the limiting part is arranged on the mounting seat and abuts against one axial end of the elastic sealing sleeve, and the extrusion part is arranged on the elastic sealing sleeve. The extrusion part is arranged on the movable rod and abuts against the end, away from the limiting part, of the elastic sealing sleeve, the driving piece is arranged on the installation base and connected to the movable rod so as to drive the movable rod to move, and when the movable rod moves to drive the extrusion part to move towards the limiting part, the extrusion part and the limiting part extrude the two ends of the elastic sealing sleeve correspondingly; therefore, at least part of the elastic sealing sleeve elastically deforms outwards in the radial direction of the elastic sealing sleeve. According to the quick plugging device for the pressure test, when a pipeline needs to be plugged, operation is more convenient, more time and labor are saved, labor intensity can be reduced, sealing performance is better after plugging, and the plugging effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure test detection, in particular to a quick plugging device for pressure test. Background Art

[0002] After some equipment is manufactured, it needs to be subjected to a pressure test. As Figure 1 shown, taking the fuel tank 800 as an example, during the pressure test, the pipeline 801 connected to the fuel tank 800 needs to be plugged, and then gas is injected into the fuel tank 800 so that the fuel tank 800 maintains a set air pressure for a period of time, and then it is checked whether there is air leakage at the fuel tank 800, the pipeline 801, and the welding position between the two.

[0003] In the prior art, generally, a sealing rubber hose 802 with one end closed is sleeved outside the pipeline 801 of the fuel tank 800, and then the sealing rubber hose 802 is locked by a pipe clamp 803 to achieve plugging. The locking and disassembly operations are troublesome, time-consuming and laborious, and the sealing effect is poor when locked by the pipe clamp 803, and the problem of plugging failure is likely to occur. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a quick plugging device for pressure test, which is more convenient and time-saving when plugging a pipeline, can reduce the labor intensity, and has better sealing performance and plugging effect after plugging.

[0005] According to an embodiment of the utility model, the quick plugging device for pressure test includes a mounting seat, a movable rod, an elastic sealing sleeve, a limiting part, a pressing part and a driving part. The movable rod is arranged in the mounting seat so as to be movable along its own axial direction. The elastic sealing sleeve is sleeved outside the movable rod. The limiting part is arranged on the mounting seat and abuts against one end of the elastic sealing sleeve in the axial direction. The pressing part is arranged on the movable rod and abuts against the end of the elastic sealing sleeve far away from the limiting part. The driving part is arranged on the mounting seat and is connected to the movable rod to drive the movable rod to move. When the movable rod moves to drive the pressing part to move towards the limiting part, the pressing part and the limiting part respectively press the two ends of the elastic sealing sleeve, so that at least part of the elastic sealing sleeve elastically deforms radially outwards along its own direction.

[0006] The quick plugging device for pressure test according to an embodiment of the utility model has at least the following beneficial effects:

[0007] When it is necessary to block a pipeline, insert the movable rod and the elastic sealing sleeve into the pipeline, and then operate the driving member. The driving member drives the movable rod to move, so that the extrusion portion moves towards the limiting portion. The extrusion portion and the limiting portion can respectively extrude both ends of the elastic sealing sleeve. The elastic sealing sleeve is subjected to the extrusion forces at both ends and cannot elastically deform inward due to the restriction of the movable rod. Therefore, at least part of the elastic sealing sleeve will elastically deform outward along its radial direction, and the outer side wall of the elastic sealing sleeve can be pressed against the inner side wall of the pipeline, thereby realizing the blocking of the pipeline. Then, gas can be injected into the equipment for pressure test detection. After the detection is completed, operate the driving member to drive the extrusion portion to move away from the limiting portion along the direction away from the limiting portion, and the elastic sealing sleeve can return to its natural state and then separate from the inner side wall of the pipeline. Finally, the movable rod and the elastic sealing sleeve can be withdrawn. According to the quick blocking device for pressure test of the embodiment of the present invention, when it is necessary to block a pipeline, the operation is more convenient, more time-saving and labor-saving, the labor intensity can be reduced, and the sealing performance after blocking is better and the blocking effect is better.

[0008] According to some embodiments of the present invention, two annular slits are provided on the outer side wall of the elastic sealing sleeve, and the two annular slits are arranged along the axial direction of the elastic sealing sleeve, and the annular slits surround the elastic sealing sleeve.

[0009] According to some embodiments of the present invention, the distances between the two end faces in the axial direction of the elastic sealing sleeve and the adjacent annular slits are equal.

[0010] According to some embodiments of the present invention, the limiting portion is arranged in a sleeve shape and sleeved on the outer side of the movable rod.

[0011] According to some embodiments of the present invention, the limiting portion is coaxially arranged with the elastic sealing sleeve.

[0012] According to some embodiments of the present invention, when the elastic sealing sleeve is not squeezed, the outer side wall of the limiting portion is flush with the outer side wall of the elastic sealing sleeve.

[0013] According to some embodiments of the present invention, the end face of the extrusion portion close to the elastic sealing sleeve is parallel to the end face of the elastic sealing sleeve.

[0014] According to some embodiments of the present invention, the extrusion portion is arranged in a circular plate shape, and when the elastic sealing sleeve is not squeezed, the outer side wall of the extrusion portion is flush with the outer side wall of the elastic sealing sleeve.

[0015] According to some embodiments of the present invention, the extrusion portion is detachably connected to the movable rod.

[0016] According to some embodiments of the present utility model, the driving member includes a cylinder, the cylinder is disposed on the mounting base, the cylinder is provided with a piston rod, and the piston rod is connected to the movable rod.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, some advantages will become apparent from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0019] Figure 1 is a schematic diagram of plugging a pipeline in the prior art;

[0020] Figure 2 is a schematic structural diagram of the quick plugging device for pressure testing according to an embodiment of the present utility model;

[0021] Figure 3 is Figure 2 a cross-sectional view of;

[0022] Figure 4 is Figure 3 a partial enlarged view of;

[0023] Figure 5 is a schematic working diagram of the quick plugging device for pressure testing according to an embodiment of the present utility model;

[0024] Figure 6 is a schematic diagram after the quick plugging device for pressure testing according to an embodiment of the present utility model is separated from the pipeline;

[0025] Figure 7 is Figure 5 a cross-sectional view of;

[0026] Figure 8 is Figure 7 an enlarged view of the A position in;

[0027] Reference numerals in the drawings:

[0028] Mounting base 100;

[0029] Movable rod 200;

[0030] Elastic sealing sleeve 300; Annular notch 301;

[0031] Limiting portion 400;

[0032] Extrusion portion 500; Fastener 501;

[0033] Driving member 600; Cylinder 601; Piston rod 602;

[0034] Switch 700;

[0035] Fuel tank 800; pipeline 801; sealing hose 802; pipe clamp 803. Detailed implementation manner

[0036] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, "a plurality of" refers to two or more. If the first and the second are described, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0039] In the description of the present utility model, unless otherwise clearly defined, terms such as setting, installation, and connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0040] Below with reference to Figures 2 to 8 Describe a quick plugging device for pressure testing according to an embodiment of the present utility model.

[0041] With reference to Figures 2 to 8 As shown, the quick plugging device for pressure testing according to an embodiment of the present utility model includes a mounting seat 100, a movable rod 200, an elastic sealing sleeve 300, a limiting portion 400, a pressing portion 500, and a driving member 600.

[0042] Among them, the movable rod 200 is disposed on the mounting seat 100 so as to be movable along its own axial direction. The movable rod 200 may be a round rod structure, and the diameter of the movable rod 200 may be slightly smaller than the aperture of the pipeline 801 to be plugged.

[0043] The elastic sealing sleeve 300 is sleeved on the outside of the movable rod 200. In the natural state, that is, in the state of not being extruded, the outer diameter of the elastic sealing sleeve 300 can be slightly smaller than the aperture of the pipeline 801 to be blocked. The elastic sealing sleeve 300 is not fixed to the movable rod 200, that is, at least part of the elastic sealing sleeve 300 can move axially along the movable rod 200. The elastic sealing sleeve 300 can be made of elastic rubber, elastic silica gel or other suitable elastic materials.

[0044] The limiting part 400 is arranged on the mounting seat 100 and abuts against one end of the elastic sealing sleeve 300 in the axial direction. Specifically, the limiting part 400 can abut against the corresponding end face of the elastic sealing sleeve 300 at various positions in the circumferential direction of the elastic sealing sleeve 300.

[0045] The extrusion part 500 is arranged on the movable rod 200 and abuts against the end of the elastic sealing sleeve 300 far from the limiting part 400. Specifically, the extrusion part 500 can abut against the corresponding end face of the elastic sealing sleeve 300 at various positions in the circumferential direction of the elastic sealing sleeve 300.

[0046] The driving part 600 is arranged on the mounting seat 100 and is connected to the movable rod 200 to drive the movable rod 200 to move. Specifically, the driving part 600 can drive the movable rod 200 to move back and forth along its own axis.

[0047] Among them, when the movable rod 200 moves to drive the extrusion part 500 to move towards the limiting part 400, the extrusion part 500 and the limiting part 400 respectively extrude the two ends of the elastic sealing sleeve 300, so that at least part of the elastic sealing sleeve 300 elastically deforms along its own radial direction. For example, the middle section of the elastic sealing sleeve 300 in the axial direction can elastically deform outwards in the radial direction at various positions in the circumferential direction, or all parts of the elastic sealing sleeve 300 can elastically deform outwards in the radial direction.

[0048] In this embodiment, when the pipeline 801 needs to be blocked, such as Figure 5 and Figure 7As shown, the movable rod 200 and the elastic sealing sleeve 300 are inserted into the pipeline 801. Then, the driving member 600 is operated. The driving member 600 drives the movable rod 200 to move, so that the pressing portion 500 moves towards the limiting portion 400. The pressing portion 500 and the limiting portion 400 can respectively press both ends of the elastic sealing sleeve 300. The elastic sealing sleeve 300 is subjected to the pressing forces at both ends and cannot elastically deform inward due to the restriction of the movable rod 200. Therefore, at least part of the elastic sealing sleeve 300 will elastically deform outward along its own radial direction. The outer side wall of the elastic sealing sleeve 300 can be tightly pressed against the inner side wall of the pipeline 801, thereby realizing the plugging of the pipeline 801. Then, gas can be injected into the device for pressure test. After the test is completed, the driving member 600 is operated to make the movable rod 200 drive the pressing portion 500 to move in a direction away from the limiting portion 400, and the elastic sealing sleeve 300 can return to its natural state and then separate from the inner side wall of the pipeline 801, as Figure 6 shown. Finally, the movable rod 200 and the elastic sealing sleeve 300 can be withdrawn.

[0049] According to the quick plugging device for pressure test of the embodiment of the present invention, when plugging the pipeline 801, the operation is more convenient, more time-saving and labor-saving, the labor intensity can be reduced, and the sealing performance after plugging is better and the plugging effect is better.

[0050] It should be noted that when at least part of the elastic sealing sleeve 300 elastically deforms outward along its own radial direction, at least part of the inner side wall of the elastic sealing sleeve 300 will also closely adhere to the movable rod 200 to ensure the sealing performance.

[0051] In some embodiments of the present invention, as Figure 2 and Figure 4 shown, two annular slits 301 are provided on the outer side wall of the elastic sealing sleeve 300. The two annular slits 301 are arranged along the axial direction of the elastic sealing sleeve 300, and the annular slits 301 surround the elastic sealing sleeve 300. In this embodiment, by providing two annular slits 301 on the outer side wall of the elastic sealing sleeve 300, the tension between the part of the elastic sealing sleeve 300 between the two annular slits 301 and other parts can be reduced. Therefore, when the two axial ends of the elastic sealing sleeve 300 are respectively pressed by the limiting portion 400 and the pressing portion 500, the part of the elastic sealing sleeve 300 between the two annular slits 301 is more likely to elastically deform outward along the radial direction, and thus the contact with the inner side wall of the pipeline 801 is closer, so that the plugging effect on the pipeline 801 is better and the sealing performance is better.

[0052] In some embodiments of the present invention, as Figure 2 and Figure 4As shown, the distances between the two axial end faces of the elastic sealing sleeve 300 and the adjacent annular notches 301 are equal. For example, the two annular notches 301 can be parallel to each other, and the distance between one end face of the elastic sealing sleeve 300 and the adjacent annular notch 301 is equal to the distance between the other end face of the elastic sealing sleeve 300 and the adjacent annular notch 301.

[0053] In this embodiment, with such a setting, the portion of the elastic sealing sleeve 300 between the two annular notches 301 is more likely to elastically deform radially outward, and thus the contact with the inner wall of the pipeline 801 is closer, resulting in a better sealing effect and better tightness for the pipeline 801.

[0054] In some embodiments of the present utility model, such as Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, the limiting portion 400 is arranged in a sleeve shape and sleeved outside the movable rod 200. For example, the inner wall of the limiting portion 400 can be adapted to the outer wall of the movable rod 200. In this embodiment, with such a setting, when the end face of the limiting portion 400 abuts against the end face of the elastic sealing sleeve 300, not only is the contact area wider and the contact more uniform, making the elastic sealing sleeve 300 receive force more evenly, but also the portion of the elastic sealing sleeve 300 between the two annular notches 301 is more likely to elastically deform radially outward at various positions in the circumferential direction, so that the outer wall of the elastic sealing sleeve 300 is in closer contact with the inner wall of the pipeline 801, resulting in a better sealing effect and better tightness for the pipeline 801. In addition, the limiting portion 400 can also guide the movable rod 200, so that the movable rod 200 can move precisely along its own axis, and thus the effect of driving the pressing portion 500 to press the elastic sealing sleeve 300 is better.

[0055] In some embodiments of the present utility model, such as Figures 2 to 4 As shown, the limiting portion 400 and the elastic sealing sleeve 300 are coaxially arranged. With such a setting, when the end face of the limiting portion 400 abuts against the end face of the elastic sealing sleeve 300, not only is the contact area wider and the contact more uniform, making the elastic sealing sleeve 300 receive force more evenly, but also the portion of the elastic sealing sleeve 300 between the two annular notches 301 is more likely to elastically deform radially outward at various positions in the circumferential direction, so that the outer wall of the elastic sealing sleeve 300 is in closer contact with the inner wall of the pipeline 801, resulting in a better sealing effect and better tightness for the pipeline 801.

[0056] In some embodiments of the present utility model, such as Figures 2 to 4As shown, when the elastic seal sleeve 300 is not squeezed, the outer sidewall of the limiting portion 400 is flush with the outer sidewall of the elastic seal sleeve 300. That is, when the elastic seal sleeve 300 is not squeezed, the outer diameter dimension of the limiting portion 400 is equal to the outer diameter dimension of the elastic seal sleeve 300. In this way, not only can interference between the limiting portion 400 and the pipeline 801 be avoided when the elastic seal sleeve 300 is inserted into the pipeline 801, but also the end face of the limiting portion 400 can abut against various positions of the end face of the elastic seal sleeve 300. Furthermore, the abutting positions are more comprehensive and uniform, making the elastic seal sleeve 300 receive force more evenly. As a result, the portion of the elastic seal sleeve 300 between the two annular notches 301 is more likely to elastically deform radially outward at various positions in the circumferential direction, so that the outer sidewall of the elastic seal sleeve 300 abuts more closely against the inner sidewall of the pipeline 801, and the sealing effect on the pipeline 801 is better and the sealing performance is better.

[0057] In some embodiments of the present invention, as Figure 4 and Figure 8 shown, an extrusion surface is formed on the end face of the extrusion portion 500 close to the elastic seal sleeve 300, and the extrusion surface is parallel to the end face of the elastic seal sleeve 300. With such a setting, when the movable rod 200 drives the extrusion portion 500 to move towards the limiting portion 400, the abutting effect between the extrusion surface of the extrusion portion 500 and the end face of the elastic seal sleeve 300 can be better, making the elastic seal sleeve 300 receive force more evenly. As a result, the portion of the elastic seal sleeve 300 between the two annular notches 301 is more likely to elastically deform radially outward at various positions in the circumferential direction, so that the outer sidewall of the elastic seal sleeve 300 abuts more closely against the inner sidewall of the pipeline 801, and the sealing effect on the pipeline 801 is better and the sealing performance is better.

[0058] In some embodiments of the present invention, as Figures 2 to 4 shown, the extrusion portion 500 is arranged in a circular plate shape. When the elastic seal sleeve 300 is not squeezed, the outer sidewall of the extrusion portion 500 is flush with the outer sidewall of the elastic seal sleeve 300. That is, when the elastic seal sleeve 300 is not squeezed, the diameter dimension of the extrusion portion 500 is equal to the outer diameter dimension of the elastic seal sleeve 300. In this way, not only can interference between the extrusion portion 500 and the pipeline 801 be avoided when the elastic seal sleeve 300 is inserted into the pipeline 801, but also the end face of the extrusion portion 500 can abut against various positions of the end face of the elastic seal sleeve 300. Furthermore, the abutting is more comprehensive and uniform, making the elastic seal sleeve 300 receive force more evenly. As a result, the portion of the elastic seal sleeve 300 between the two annular notches 301 is more likely to elastically deform radially outward at various positions in the circumferential direction, so that the outer sidewall of the elastic seal sleeve 300 abuts more closely against the inner sidewall of the pipeline 801, and the sealing effect on the pipeline 801 is better and the sealing performance is better.

[0059] In some embodiments of the present utility model, such as Figures 2 to 4 and Figure 8 shown, the extrusion part 500 is detachably connected to the movable rod 200. For example, the extrusion part 500 and the movable rod 200 can be connected by a fastener 501, and the extrusion part 500 can be disassembled, so that it is more convenient to clean, repair or replace the extrusion part 500 and the elastic sealing sleeve 300.

[0060] It should be noted that the extrusion part 500 and the movable rod 200 can also be snap-connected or connected by threads.

[0061] In some embodiments of the present utility model, such as Figure 3 shown, the driving member 600 includes a cylinder 601, the cylinder 601 is arranged on the mounting seat 100, the cylinder 601 is provided with a piston rod 602, and the piston rod 602 is connected to the movable rod 200. Starting the cylinder 601, the cylinder 601 controls the movement of the piston rod 602, and the piston rod 602 can drive the movable rod 200 to move, with a simple structure and convenient operation.

[0062] It should be noted that the quick plugging device for pressure testing can also include a switch 700, and the switch 700 is connected to the driving member 600 to control the operation of the driving member 600. The driving member 600 can also be other structures, for example, it can also be an oil cylinder or an electric push rod.

[0063] The above has described the embodiments of the present utility model in detail with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the gist of the present utility model within the knowledge scope of those of ordinary skill in the art.

Claims

1. A rapid plugging device for pressure testing, characterized in that: include: Mounting seat; A movable rod is arranged on the mounting seat so as to be movable along its own axial direction; An elastic sealing sleeve, sleeved on the outer side of the movable rod; A limiting portion, disposed on the mounting seat and abutting against one axial end of the elastic sealing sleeve; An extrusion portion, disposed on the movable rod and abutting against an end of the elastic sealing sleeve away from the limiting portion; A driving member, disposed on the mounting seat and connected to the movable rod to drive the movable rod to move; When the movable rod moves to drive the extrusion part to move toward the limiting part, the extrusion part and the limiting part respectively squeeze the two ends of the elastic sealing sleeve, so that at least a part of the elastic sealing sleeve is elastically deformed outward along its own radial direction.

2. The rapid plugging device for pressure testing according to claim 1, characterized in that: The outer side wall of the elastic sealing sleeve is provided with two annular notches, the two annular notches are arranged along the axial direction of the elastic sealing sleeve, and the annular notches surround the elastic sealing sleeve.

3. The rapid plugging device for pressure testing according to claim 2, characterized in that: The distances between the two axial end surfaces of the elastic sealing sleeve and the adjacent annular notches are equal.

4. The rapid plugging device for pressure testing according to any one of claims 1 to 3, characterized in that: The limiting portion is configured in a sleeve shape and sleeved on the outer side of the movable rod.

5. The rapid plugging device for pressure testing according to claim 4, characterized in that: The limiting portion is coaxially arranged with the elastic sealing sleeve.

6. The rapid plugging device for pressure testing according to claim 5, characterized in that: When the elastic sealing sleeve is not squeezed, the outer side wall of the limiting portion is flush with the outer side wall of the elastic sealing sleeve.

7. The rapid plugging device for pressure testing according to any one of claims 1 to 3, characterized in that: An end surface of the extrusion portion close to the elastic sealing sleeve is parallel to an end surface of the elastic sealing sleeve.

8. The rapid plugging device for pressure testing according to claim 7, characterized in that: The extrusion portion is configured in a circular plate shape, and when the elastic sealing sleeve is not extruded, an outer side wall of the extrusion portion is flush with an outer side wall of the elastic sealing sleeve.

9. The rapid plugging device for pressure testing according to any one of claims 1 to 3, characterized in that: The extrusion portion is detachably connected to the movable rod.

10. The rapid plugging device for pressure testing according to any one of claims 1 to 3, characterized in that: The driving member comprises: A cylinder is arranged on the mounting seat, and the cylinder is provided with a piston rod, and the piston rod is connected to the movable rod.

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