Gas pipeline under-pressure plugging device

Abstract

The utility model relates to the technical field of gas pipeline transformation equipment, and discloses a gas pipeline under-pressure plugging device which comprises an elastic plugging body, the elastic plugging body is sleeved outside a sleeve rod, a pushing part is sleeved on the sleeve rod at the upper part of the elastic plugging body, a screw rod is rotatably arranged in the sleeve rod, and the pushing part is sleeved on the pushing part. A movable sleeve is arranged on the screw rod in a threaded mode, a connecting part is arranged on the movable sleeve, and the connecting part extends out of an adjusting groove formed in the sleeve rod and then is connected with the pushing part; during working, along with rotation of the screw rod, the movable sleeve is driven to push the pushing part to move in the axial direction of the sleeve rod, and the pushing part can push the elastic plugging body to expand and deform to complete plugging of an inner cavity of a pipeline; according to the utility model, the horizontal displacement of the pushing part can be realized only by rotating the screw rod, so that the elastic plugging body is extruded to deform and tightly abut against the interior of the pipeline, the sealing work is completed, the operation is simple and convenient, and the practicability is strong.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal gas pipeline reconstruction equipment technical field especially, relates to a kind of coal gas pipeline pressurized plugging device. BACKGROUND

[0002] In the process of gas pipeline reconstruction, in order not to affect the use of gas by residents, the pipeline mouth to be reconstructed is usually plugged by plugging method. In the prior art, the plugging method is to use soil to plug. When the pipeline is being reconstructed, high temperature is generated to the pipeline. The soil will crack and generate gaps when receiving high temperature, which is prone to gas leakage. Moreover, the soil block cannot be effectively cleaned after the valve is installed.

[0003] Based on this, the patent with publication number CN222527170U discloses a kind of gas pipeline pressurized plugging equipment, including screw rod, sleeve rod and elastic plugging body, screw rod bottom is sequentially provided with nut one, gasket one, elastic plugging body, gasket two, nut two, spring and nut three from top to bottom, sleeve rod bottom is integrally formed with sleeve wrench for rotating nut one, handle structure for rotating sleeve rod is arranged on both sides of the top of sleeve rod. The device is inserted into the pipeline to be plugged, the sleeve rod is rotated by the handle structure, and the sleeve wrench is rotated to make the distance between the gasket one and the gasket two smaller, so that the elastic plugging body is extruded and deformed. The deformed elastic plugging body plugs the pipeline, thereby realizing the pressurized plugging of the gas pipeline. The sleeve rod can be removed as a whole, which facilitates the installation of branch valves at the pipeline reconstruction site.

[0004] The above-mentioned patent solves the problem of pressurized plugging of the pipeline to some extent, but when adjusting the nut to extrude the elastic plugging body, the sleeve wrench integrally arranged at the bottom of the sleeve rod needs to be arranged outside the nut to perform the screwing operation. Due to the limited space, it is not only inconvenient to rotate and adjust the sleeve rod, but also inconvenient to disassemble the nut from the screw rod after adjusting the nut to the right position, thereby preventing the installation of the valve body. Therefore, there is an urgent need for a coal gas pipeline pressurized plugging device that is easy to operate and adjust. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of coal gas pipeline pressurized plugging device, only need to rotate screw rod, it can realize the horizontal displacement of pusher, thereby extruding the elastic plugging body to make it deformed and tightly abut in the pipeline, thereby completing sealing work, easy to operate, and practical.

[0006] The utility model adopts the following technical solutions:

[0007] The utility model provides a kind of coal gas pipeline pressure plugging device, including elastic plugging body, the elastic plugging body is set in sleeve rod outside, the sleeve rod bottom is provided with two locking nuts, spring is set in the sleeve rod outside between two locking nuts, the sleeve rod on the upper portion of elastic plugging body is set with push part, the sleeve rod is rotationally arranged with screw rod, screw rod is threadedly provided with moving sleeve, the moving sleeve is provided with connecting part, the connecting part is connected with push part after being stretched from the adjusting slot being set in the sleeve rod;When working, the moving sleeve pushes push part and moves along the sleeve rod axial direction with the rotation of screw rod, push part will push elastic plugging body to occur swelling deformation and complete the plugging of pipeline lumen.

[0008] Preferably, the adjusting groove is spaced apart along the circumferential direction of the sleeve rod, and a plurality of connecting parts connected with the moving sleeve are arranged in each adjusting groove.

[0009] Preferably, the push part and the connecting part are detachably connected.

[0010] Preferably, the push part and the connecting part are connected by bolts.

[0011] Preferably, a countersunk hole for mounting the bolt is formed in the push part.

[0012] Preferably, the connecting part is threadedly connected with the moving sleeve.

[0013] Preferably, the end of the connecting part in contact with the push part is provided with an arc structure coaxial with the push part.

[0014] Preferably, a stop ring is coaxially arranged at the end of the push part close to the elastic plugging body.

[0015] Preferably, a rotating sleeve is rotationally arranged at the end of the sleeve rod, and the rotating sleeve is connected with the screw rod.

[0016] Preferably, a rotating sleeve is rotationally arranged at the end of the sleeve rod, and a ratchet is arranged in the rotating sleeve, and a ratchet wheel is arranged on the screw rod;The ratchet is symmetrically arranged with two ratchets, and an adjusting block is arranged between the two ratchets, and an adjusting rod for adjusting the adjusting block is movably arranged at the top of the rotating sleeve.

[0017] The utility model discloses the beneficial effect compared with prior art is: the utility model discloses a screw rod is arranged in rotation in the sleeve rod, and the movable sleeve is arranged on the screw rod in the thread, can make movable sleeve with the rotation of screw rod along the axial movement of screw rod, and then push the pusher and move the extrusion of elastic plugging body, make its deformation complete the plugging work in the pipeline, only need to rotate screw rod can complete operation, need not additional installation additional structure, and the operation is simple, and the space is limited less, simultaneously through to the diameter of sleeve rod is optimized and is set up, plus the whole sleeve rod outside no other redundant structure, can realize the direct wear of subsequent valve body and installs, simplifies the operation process, and the practicality is strong. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is structural schematic diagram of the embodiment of the application;

[0019] Figure 2 It is sectional view of sleeve rod of the embodiment of the application;

[0020] Figure 3 It is Figure 2 the enlarged view of A;

[0021] Figure 4 It is structural schematic diagram of pusher of the embodiment of the application;

[0022] Figure 5 It is the overhead sectional view of the rotating sleeve of the embodiment of the application. DETAILED DESCRIPTION

[0023] The utility model will be described clearly and completely with the drawings and examples below:

[0024] As Figures 1 to 5 The utility model discloses a coal gas pipeline pressure plugging device, including elastic plugging body 1, elastic plugging body 1 adopts the rubber material quality processing and preparation with high temperature resistance, and the through -hole is set up in the middle part of elastic plugging body 1, so as to be sleeved in the sleeve rod 2 outside, also help to expand under the extrusion of external force, so as to realize the plugging of pipeline, elastic plugging body 1 is sleeved in the sleeve rod 2, and the sleeve rod 2 bottom is provided with external thread, and two lock nuts 3 are connected on it in the thread, and the sleeve rod 2 outside between two lock nuts 3 is sleeved with spring 4, wherein the sleeve rod 2 outside of elastic plugging body 1 bottom end is sleeved with gasket, one lock nut 3 is closely contacted with gasket, and another lock nut 3 is located on the sleeve rod 2 below spring 4, and spring 4 both ends press the opposite end face of two lock nuts 3 respectively, and then play the purpose of two lock nuts 3 relaxation.

[0025] The push part 5 is sleeved on the sleeve rod 2 at the upper part of the elastic blocking body 1, and the push part 5 is in a cylindrical structure as a whole, a gasket is sleeved on the sleeve rod 2 between the push part 5 and the elastic blocking body 1, a screw rod 6 is rotationally arranged in the sleeve rod 2, a moving sleeve 7 is threadedly arranged on the screw rod 6, a connecting part 8 is arranged on the moving sleeve 7, and the connecting part 8 is connected with the push part 5 after extending out of an adjusting groove 9 arranged on the sleeve rod 2; in operation, the moving sleeve 7 pushes the push part 5 to move along the sleeve rod 2 in the axial direction with the rotation of the screw rod 6, and the push part 5 pushes the elastic blocking body 1 to expand and deform, thereby completing the blocking of the inner cavity of the pipeline. Since the driving structure is integrated in the sleeve rod 2, the diameter of the sleeve rod 2 is optimized to be not greater than the diameter that can pass through when the valve body is installed, the occupation of external space is reduced, and when the push part 5 is moved, no additional driving tool or driving structure is needed, only the screw rod 6 that extends out of the end of the sleeve rod 2 needs to be rotated, the occupation of space is reduced, the process of installing and dismounting the sleeve wrench is simplified compared with the prior art, and the practicability is high.

[0026] In the embodiment, in order to facilitate the rotation of the screw rod 6, a rotating sleeve 10 is rotationally arranged at the end of the sleeve rod 2 through a bearing, the rotating sleeve 10 is connected with the screw rod 6, the rotation of the screw rod 6 is completed by rotating the rotating sleeve 10, and the convenience of operation is improved. Since the rotating sleeve 10 is coaxially arranged with the screw rod 6 and only moves in the circumferential direction in operation, the space requirement is not high, and the rotating sleeve 10 does not need to be dismounted after the pipeline inner cavity is blocked, and the practicability is high. The rotating sleeve 10 can be covered with a rubber sleeve to improve the comfort of hands during operation.

[0027] As a preferred example, the rotating sleeve 10 can also be rotationally arranged at the end of the sleeve rod 2 through a bearing, and a ratchet 11 is elastically arranged in the rotating sleeve 10, and a ratchet wheel 12 is coaxially arranged on the screw rod 6; the two ratchets 11 are symmetrically arranged, an adjusting lug 13 is movably arranged between the two ratchets 11, an adjusting rod 14 connected with the adjusting lug 13 is movably arranged at the top of the rotating sleeve 10, the adjusting lug 13 is driven to move to the two sides respectively by the adjusting rod 14, so that the ratchet 11 on the opposite side is pushed away, the ratchet 11 on the opposite side is engaged with the ratchet wheel 12, and the forward and reverse rotation of the screw rod 6 is realized; the arrangement of the ratchet 11 and the ratchet wheel 12 can further improve the convenience of adjusting the screw rod 6 in the limited space.

[0028] Further, in the embodiment, the adjusting grooves 9 are spaced apart along the circumferential direction of the sleeve rod 2, each adjusting groove 9 is correspondingly provided with a connecting part 8 connected with the moving sleeve 7, and the connecting part 8 is connected with the pushing part 5 to ensure the stability of the pushing part 5 and enhance the stress capacity of the pushing part 5. Preferably, the pushing part 5 and the connecting part 8 are detachably connected, which facilitates targeted replacement of specified parts and reduces maintenance costs; preferably, the pushing part 5 and the connecting part 8 are connected by bolts, and bolt holes 15 are formed in the pushing part 5 and the connecting part 8, and the bolts are arranged in the bolt holes 15 to connect the two parts; preferably, the bolt holes 15 formed in the pushing part 5 are counterbores to accommodate the ends of the bolts and avoid increasing the occupation of the surrounding space due to the protruding bolts.

[0029] In addition, the connecting part 8 is threadedly connected with the moving sleeve 7 to facilitate disassembly and replacement of the connecting part 8; specifically, the bottom of the connecting part 8 is provided with external threads, and the moving sleeve 7 is provided with a mounting hole having internal threads; the side of the connecting part 8 away from the moving part is provided with an arc-shaped structure coaxial with the pushing part 5 to increase the contact area when the two parts are connected and improve the stability of the connection; in addition, the end of the pushing part 5 close to the elastic sealing body 1 is coaxially provided with a stop ring 16 fixedly connected with the pushing part 5, and the stop ring 16 abuts against the sidewall of the arc-shaped structure at one end of the connecting part 8 in the initial state; when the pushing part 5 abuts against the elastic sealing body 1 under stress, the stop ring 16 can share part of the force acting on the bolt, thereby improving the stability of the position of the pushing part 5.

[0030] In use, the elastic sealing body 1 is inserted into the pipeline to be sealed, the rotating sleeve 10 is rotated to drive the screw rod 6 to rotate, the moving sleeve 7 drives the pushing part 5 to move through the connecting part 8 to extrude the elastic sealing body 1, the elastic sealing body 1 is deformed under pressure and the outer diameter increases, thereby sealing the inside of the pipeline; then the valve body is opened, the valve core of the valve body is installed in the pipeline opening through the sleeve rod 2, after the valve body is installed in the pipeline opening, the screw rod 6 is controlled to rotate in the opposite direction, the moving sleeve 7 moves away from the elastic sealing body 1 with the pushing part 5, the elastic sealing body 1 gradually returns to the original state, then the device is quickly removed as a whole, and the valve body is closed.

Claims

1. A coal gas pipeline pressure blocking device, comprising an elastic blocking body, the elastic blocking body is sleeved on a sleeve rod, the bottom of the sleeve rod is provided with two locking nuts, the sleeve rod between the two locking nuts is sleeved with a spring, characterized in that: The push part is sleeved on the sleeve rod of the elastic blocking body upper part, the screw rod is rotationally arranged in the sleeve rod, the moving sleeve is threadedly arranged on the screw rod, the connecting part is arranged on the moving sleeve, and the connecting part is connected with the push part after extending out of the adjusting slot arranged on the sleeve rod. ​ 2. The coal gas pipeline plugging device under pressure according to claim 1, characterized in that: The adjusting slots are arranged at intervals along the circumferential direction of the sleeve rod, and the connecting part connected with the moving sleeve is arranged in each adjusting slot.

3. The coal gas pipeline plugging device under pressure according to claim 2, characterized in that: The push part and the connecting part are detachably connected.

4. The coal gas pipeline plugging device under pressure according to claim 3, characterized in that: The push part and the connecting part are connected through bolts.

5. The coal gas pipeline plugging device under pressure according to claim 4, characterized in that: A countersunk hole for mounting the bolt is arranged on the push part.

6. The coal gas pipeline plugging device under pressure according to claim 5, characterized in that: The connecting part and the moving sleeve are threadedly connected.

7. The coal gas pipeline plugging device under pressure according to claim 6, characterized in that: The end of the connecting part in contact with the push part is arranged as an arc structure coaxial with the push part.

8. The coal gas pipeline plugging device under pressure according to claim 7, characterized in that: A stop ring is coaxially arranged on the end of the push part close to the elastic blocking body.

9. The coal gas pipeline plugging device under pressure according to claim 1, characterized in that: A rotating sleeve is rotationally arranged at the end of the sleeve rod, and the rotating sleeve is connected with the screw rod.

10. The coal gas pipeline plugging device under pressure according to claim 1, characterized in that: A rotating sleeve is rotationally arranged at the end of the sleeve rod, and the rotating sleeve is connected with the screw rod. The adjusting slots are arranged at intervals along the circumferential direction of the sleeve rod, and the connecting part connected with the moving sleeve is arranged in each adjusting slot. The push part and the connecting part are detachably connected. The push part and the connecting part are connected through bolts. A countersunk hole for mounting the bolt is arranged on the push part. The connecting part and the moving sleeve are threadedly connected. The end of the connecting part in contact with the push part is arranged as an arc structure coaxial with the push part. A stop ring is coaxially arranged on the end of the push part close to the elastic blocking body. A rotating sleeve is rotationally arranged at the end of the sleeve rod, and the rotating sleeve is connected with the screw rod. A rotating sleeve is rotationally arranged at the end of the sleeve rod, and the rotating sleeve is connected with the screw rod. The adjusting slots are arranged at intervals along the circumferential direction of the sleeve rod, and the connecting part connected with the moving sleeve is arranged in each adjusting slot.

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