In-service pipeline under-pressure plugging auxiliary equipment

Abstract

The utility model discloses in-service pipeline under-pressure plugging auxiliary equipment, which relates to the technical field of pipeline repair and comprises a shunt pipe, a connecting tile is fixedly arranged at the bottom end of the shunt pipe, a to-be-sealed pipeline is arranged below the connecting tile, an extension pipe is fixedly arranged at the top end of the shunt pipe, and the extension pipe is connected with the shunt pipe. A mounting pipe is arranged at the top end of the extension pipe, and a sealing leather ring is arranged in the mounting pipe. The shunting pipe is arranged above the pipeline to be repaired, the extension pipe and the mounting pipe are arranged above the shunting pipe, and the sealing leather ring capable of sliding up and down is arranged in the mounting pipe, so that when the pipeline under pressure is sealed, the sealing leather ring can be inserted into the pipeline under the action of the positioning screw rod and the thread bushing at the top end of the sealing leather ring; and the sealing leather ring can deform under the action of the upper electromagnet and the lower electromagnet in the sealing leather ring, and the sealing leather ring deforms from the two ends to the middle, so that the outer side face of the sealing leather ring expands to block the to-be-sealed pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline repair, and particularly relates to an auxiliary device for plugging a live pipeline under pressure. Background Art

[0002] The pipeline plugging technology under pressure is a special technology for maintenance, repair and emergency repair of live pipelines, which is safe, economical, fast and efficient. It can complete operations such as pipeline replacement, displacement, valve replacement and branch line addition without interrupting the pipeline medium transportation. Also, when a pipeline leaks, it can quickly and safely repair the accident pipeline and restore the pipeline operation. In the past, for the emergency repair of sudden pipeline accidents, the traditional method had to stop the transportation, empty the pipeline and then carry out the repair or take some temporary remedial measures, which brought great potential safety hazards to the safe operation of the pipeline. The plugging technology under pressure without stopping the transportation is safe, reliable and pollution-free. It not only does not affect the normal transportation of the pipeline, but also can ensure the safe, efficient and environmental protection connection of new and old pipelines. The media applicable to the plugging technology under pressure without stopping the transportation include non-strongly corrosive media such as petroleum, natural gas, water, ethylene, coal gas, medium-quality oil, aviation oil, etc.

[0003] For example, the small-diameter pressure pipeline plugging device with the publication number of CN205013959U relates to a plugging device. It includes a plugging device body, a fixing rod, a side support seat, a central cylinder, a connecting cylinder, an operating mechanism, and a plugging head. A central cylinder is arranged in the center of the plugging device body. A connecting cylinder is sleeved outside one end of the central cylinder. An outer cylinder is also arranged between the central cylinder and the connecting cylinder. The fixing rod is around the central cylinder and its two ends are fixed on the side support seats at both ends of the plugging device body. The other end of the central cylinder is connected to the operating mechanism, and the plugging head is arranged at the top of the central cylinder and the connecting cylinder. The beneficial effect of the utility model is that it can realize plugging of a small-diameter pressure pipeline under pressure without stopping the transportation. The minimum diameter of the plugged pipeline can reach the nominal diameter of 40, and it is used for plugging operations of petroleum, petrochemical, and gas water pipes.

[0004] The above technical solution has some problems in practical applications. When the above technical solution is used for plugging, its plugging effect is limited by the contact effect between the plugging head and the pipeline, and the plugging head is prone to wear during multiple uses, affecting the plugging effect.

[0005] Therefore, it is very necessary to invent an auxiliary device for plugging a live pipeline under pressure to solve the above problems. Content of the Utility Model

[0006] The purpose of the utility model is to provide an auxiliary device for plugging a live pipeline under pressure to solve the problems raised in the above background art.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An auxiliary device for plugging a live pipeline under pressure, including a shunt pipe. A connecting tile is fixedly arranged at the bottom end of the shunt pipe. A pipeline to be sealed is arranged below the connecting tile. An extension pipe is fixedly arranged at the top end of the shunt pipe. An installation pipe is arranged at the top end of the extension pipe. A sealing leather ring is arranged inside the installation pipe. Lower electromagnets and upper electromagnets are respectively fixedly arranged at both ends inside the sealing leather ring. The lower electromagnets and the upper electromagnets are both arranged in a cylindrical structure, and a deceleration spring is arranged between the lower electromagnets and the upper electromagnets. A positioning screw rod is fixedly arranged at the top end of the sealing leather ring. A fixing plate is fixedly arranged at the top end of the installation pipe. A threaded sleeve is movably arranged in the middle of the fixing plate through a bearing, and the threaded sleeve is sleeved outside the positioning screw rod. A driving motor is fixedly arranged at the top end of the fixing plate, and a gear set is arranged between the driving motor and the threaded sleeve.

[0008] Preferably, positioning sliders are fixedly arranged on both inner walls of the installation pipe, and positioning sliding seats corresponding to the positioning sliders are fixedly arranged at the top end of the sealing leather ring.

[0009] Preferably, an extension cover is fixedly arranged in the middle of the extension pipe. A slot is opened in the middle of the extension cover, and one end of the slot extends into the extension pipe.

[0010] Preferably, a sealing plate is inserted into the slot, and the sealing plate is arranged in a circular structure corresponding to the extension pipe.

[0011] Preferably, a screw hole is penetrated through the middle of the bottom of the slot, and an adjusting screw rod is penetrated through the screw hole.

[0012] Preferably, one end of the adjusting screw rod is movably arranged in the middle of the sealing plate through a bearing, and a hand wheel is fixedly arranged at one end of the adjusting screw rod.

[0013] The technical effects and advantages of the present utility model:

[0014] 1. By arranging a shunt pipe above the pipeline to be repaired, an extension pipe and an installation pipe above the shunt pipe, and a sealing leather ring that can slide up and down inside the installation pipe, when sealing a pipeline under pressure, the sealing leather ring can be inserted into the pipeline under the action of the positioning screw rod and the threaded sleeve at its top end, and the sealing leather ring can be deformed under the action of the upper electromagnet and the lower electromagnet inside it. The sealing leather ring deforms from both ends to the middle, so that the outer side surface of the sealing leather ring expands to block the pipeline to be sealed. Compared with the traditional plugging head plugging, the expanded sealing leather ring has a better sealing effect and is not easily affected by wear;

[0015] 2. The utility model controls the horizontal expansion and collapse of the sealing rubber ring by arranging a lower electromagnet and an upper electromagnet at both ends inside the sealing rubber ring. The lower electromagnet and the upper electromagnet can switch the magnetic poles by switching the direction of the current, so as to control the sealing of the pipeline. By arranging a deceleration spring between the lower electromagnet and the upper electromagnet, the deceleration spring can prevent the sealing rubber ring from being damaged due to rapid expansion, thus ensuring the stability of the device during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 is a schematic cross-sectional view of the overall structure of the utility model.

[0018] Figure 3 is a schematic diagram of the structure of the sealing rubber ring of the utility model.

[0019] In the figure: 1, shunt pipe; 2, connecting tile; 3, pipeline to be sealed; 4, extension pipe; 5, installation pipe; 6, sealing rubber ring; 7, lower electromagnet; 8, upper electromagnet; 9, deceleration spring; 10, positioning screw; 11, fixing plate; 12, threaded sleeve; 13, driving motor; 14, gear set; 15, positioning slider; 16, positioning slide; 17, extension cover; 18, slot; 19, sealing plate; 20, screw hole; 21, adjusting screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides an auxiliary equipment for plugging a live pipeline under pressure as shown in Figures 1 - 3 , which includes a shunt pipe 1. A connecting tile 2 is fixedly arranged at the bottom end of the shunt pipe 1. A pipeline 3 to be sealed is arranged below the connecting tile 2. An extension pipe 4 is fixedly arranged at the top end of the shunt pipe 1. An installation pipe 5 is arranged at the top end of the extension pipe 4. A sealing rubber ring 6 is arranged inside the installation pipe 5. The sealing rubber ring 6 is in a drum-shaped structure when not deformed, so as to be easily inserted into the pipeline 3 to be sealed;

[0022] Specifically, lower electromagnets 7 and upper electromagnets 8 are fixedly arranged at both inner ends of the sealing rubber ring 6. The lower electromagnets 7 and the upper electromagnets 8 are both arranged in a cylindrical structure, and a deceleration spring 9 is arranged between the lower electromagnets 7 and the upper electromagnets 8. The arrangement of the deceleration spring 9 prevents the sealing rubber ring 6 from being damaged due to rapid deformation.

[0023] More specifically, a positioning screw 10 is fixedly arranged at the top end of the sealing rubber ring 6, a fixing plate 11 is fixedly arranged at the top end of the installation pipe 5, a threaded sleeve 12 is movably arranged in the middle of the fixing plate 11 through a bearing, and the threaded sleeve 12 is sleeved outside the positioning screw 10. A driving motor 13 is fixedly arranged at the top end of the fixing plate 11, and a gear set 14 is arranged between the driving motor 13 and the threaded sleeve 12. Positioning sliders 15 are fixedly arranged on both inner walls of the installation pipe 5, and positioning sliding seats 16 corresponding to the positioning sliders 15 are fixedly arranged at the top end of the sealing rubber ring 6. The cooperation between the positioning sliders 15 and the positioning sliding seats 16 can ensure that the sealing rubber ring 6 slides up and down without rotating, so as to facilitate the cooperation between the positioning screw 10 and the threaded sleeve 12.

[0024] Furthermore, an extension cover 17 is fixedly arranged in the middle of the extension pipe 4. A slot 18 is opened in the middle of the extension cover 17, and one end of the slot 18 extends into the extension pipe 4. A sealing plate 19 is inserted in the slot 18, and the sealing plate 19 is arranged in a circular structure corresponding to the extension pipe 4. A screw hole 20 is penetrated through the middle of the bottom of the slot 18, and an adjusting screw 21 is penetrated through the screw hole 20. One end of the adjusting screw 21 is movably arranged in the middle of the sealing plate 19 through a bearing, and a hand wheel is fixedly arranged at one end of the adjusting screw 21. The arrangement of the hand wheel facilitates the user to rotate the adjusting screw 21. The cooperation between the adjusting screw 21 and the screw hole 20 can realize the adjustment of the position of the sealing plate 19.

[0025] The working principle of the present utility model:

[0026] When the device is in use, first weld the shunt pipe 1 to the outside of the pipeline 3 to be sealed through the connecting tile 2, and install the extension pipe 4 at the top of the shunt pipe 1. Then, pass the hole-opening drill bit through the extension pipe 4 and drill a hole on the outside of the pipeline 3 to be sealed. After drilling, block the extension pipe 4 through the sealing plate 19 inside the extension pipe 4. After removing the drill bit, fix the installation pipe 5 at the top of the extension pipe 4. Then, adjust the position of the sealing plate 19 and start the drive motor 13. The drive motor 13 drives the threaded sleeve 12 to rotate through the gear set 14. The threaded sleeve 12 cooperates with the positioning screw rod 10, so that the positioning screw rod 10 drives the sealing rubber ring 6 to move downward until the sealing rubber ring 6 is inserted into the pipeline 3 to be sealed. At this time, switch the electrode directions of the upper electromagnet 8 and the lower electromagnet 7, so that the magnetic poles of the upper electromagnet 8 and the lower electromagnet 7 change. At this time, the upper electromagnet 8 and the lower electromagnet 7 attract each other, so that both ends of the sealing rubber ring 6 move towards the middle. At this time, the sealing rubber ring 6 expands in the horizontal direction to block the pipeline 3 to be sealed.

[0027] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary device for plugging an in-service pipeline under pressure, comprising a shunt pipe (1), characterized in that: A connecting tile (2) is fixedly provided at the bottom end of the shunt pipe (1), a pipeline (3) to be sealed is provided below the connecting tile (2), an extension pipe (4) is fixedly provided at the top end of the shunt pipe (1), a mounting pipe (5) is provided at the top end of the extension pipe (4), a sealing leather ring (6) is provided inside the mounting pipe (5), a lower electromagnet (7) and an upper electromagnet (8) are fixedly provided at both ends of the sealing leather ring (6), the lower electromagnet (7) and the upper electromagnet (8) are both provided in a columnar structure, and the lower electromagnet (7) ) and an upper electromagnet (8), a deceleration spring (9) is arranged between the upper and lower electromagnets (8), a positioning screw (10) is fixedly arranged at the top end of the sealing leather ring (6), a fixing plate (11) is fixedly arranged at the top end of the mounting tube (5), a threaded sleeve (12) is movably arranged at the middle of the fixing plate (11) through a bearing, and the threaded sleeve (12) is sleeved on the outer side of the positioning screw (10), a driving motor (13) is fixedly arranged at the top end of the fixing plate (11), and a gear set (14) is arranged between the driving motor (13) and the threaded sleeve (12).

2. The auxiliary equipment for plugging pipelines under pressure in service according to claim 1 is characterized by: Positioning slide blocks (15) are fixedly provided on the inner walls of both sides of the installation tube (5), and a positioning slide seat (16) corresponding to the positioning slide blocks (15) is fixedly provided on the top end of the sealing leather ring (6).

3. The auxiliary equipment for plugging pipelines under pressure in service according to claim 2 is characterized by: An extension cover (17) is fixedly arranged in the middle of the extension tube (4), a slot (18) is opened in the middle of the extension cover (17), and one end of the slot (18) extends to the inside of the extension tube (4).

4. The auxiliary device for plugging pipelines under pressure in service according to claim 3 is characterized by: A sealing plate (19) is inserted into the interior of the slot (18), and the sealing plate (19) is configured as a circular structure corresponding to the extension tube (4).

5. The auxiliary device for plugging pipelines under pressure in service according to claim 4 is characterized in that: A screw hole (20) is provided through the middle of the bottom of the slot (18), and an adjusting screw rod (21) is provided through the inside of the screw hole (20).

6. The auxiliary device for plugging pipelines under pressure in service according to claim 5 is characterized by: One end of the adjusting screw rod (21) is movably arranged in the middle of the sealing plate (19) through a bearing, and a hand wheel is fixedly arranged at one end of the adjusting screw rod (21).

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