Pipeline plugging structure capable of operating under pressure

Abstract

The utility model discloses a pipeline plugging structure capable of operating under pressure, which comprises a plugging connecting piece, an upper sealing piece and a lower sealing piece, the lower closed pipe is welded at the lower end of the three-way pipe; the deviation preventing assembly comprises a connecting pipe, a rubber disc, a bearing, an adjusting screw rod and a rotary disc; the connecting pipe is fixed to the middle of the lower end of the lower sealing pipe and communicated with the lower sealing pipe, the bearing is fixed to the middle of the lower end of the rubber disc, the adjusting screw is screwed into the connecting pipe, the upper end of the adjusting screw is inserted into the bearing, and the rotary disc is fixed to the lower end of the adjusting screw. The three-way pipe solves the problems that an existing three-way pipe is welded to a pipeline, after a new pipeline is replaced, the cut pipeline in the three-way pipe needs to be placed in the three-way pipe again, when the three-way pipe is used and liquid media in the pipeline flow to the position, the pipeline placed in the position can move downwards under the gravity action of the liquid media, and the stability of the pipeline is affected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline maintenance technical field especially, relate to the pipeline plugging structure of pressure operation. BACKGROUND

[0002] Pipeline maintenance refers to the process of diagnosing, repairing and restoring normal operation of faults, damages or performance degradation in pipeline systems. This may include replacing damaged pipeline sections, repairing pipeline interfaces, adjusting valves and pumps and other equipment, as well as cleaning, lubrication and corrosion prevention and other measures. The pipeline plugging structure of pressure operation is a special device that can be plugged under the operation state of the pipeline. This structure is usually used in pipelines that need to be temporarily closed or repaired to ensure safe and efficient operation. The existing pipeline plugging method of pressure operation first welds two three-way pipes at both ends of the pipeline to be repaired, then installs a special gate valve, drills a hole, plugs it, replaces a new pipeline, and plugs it. Through the above series of operations, the pressure pipeline plugging operation is realized.

[0003] The existing three-way pipe is welded on the pipeline. After replacing the new pipeline, the cut pipeline in the three-way pipe needs to be placed in the three-way pipe again. When the liquid medium in the pipeline flows to this place, the pipeline placed here will move down under the action of the liquid medium gravity, affecting the stability of the pipeline. Therefore, a pipeline plugging structure of pressure operation is needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model discloses in view of the prior art's problem, proposes the following technical scheme: to solve the problem of the existing three-way pipe welded on the pipeline, after replacing the new pipeline, the cut pipeline in the three-way pipe needs to be placed in the three-way pipe again, when the liquid medium in the pipeline flows to this place, the pipeline placed here will move down under the action of the liquid medium gravity, affecting the stability of the pipeline.

[0005] The utility model discloses a pipeline plugging structure of pressure operation, including:

[0006] The plugging connecting piece includes a three-way pipe and a lower closed pipe;

[0007] The lower closed pipe is welded at the lower end of the three-way pipe;

[0008] The anti-deviation assembly includes a connecting pipe, a rubber disc, a bearing, an adjusting screw and a turntable;

[0009] The connecting pipe is fixed in the middle part of the lower end of the lower closed pipe and communicates with the lower closed pipe, the bearing is fixed in the middle part of the lower end of the rubber disc, the adjusting screw is screwed in the connecting pipe, and the upper end of the adjusting screw is inserted into the bearing, and the turntable is fixed at the lower end of the adjusting screw.

[0010] As the preferred technical scheme, the rubber disc and the bearing are located inside the tee pipe, and the upper surface of the rubber disc is attached to the lower surface of the maintenance pipe.

[0011] As the preferred technical scheme, the tee pipe is divided into two halves, and is installed on the pipe to be maintained by welding.

[0012] As the preferred technical scheme, the plugging connecting piece further comprises a plugging plate and a blind cover;

[0013] The plugging plate is fixed on the upper end pipe flange of the tee pipe by screws, and the blind cover is fixed on the upper end pipe flange of the tee pipe by bolts and is located at the upper end of the plugging plate.

[0014] As the preferred technical scheme, the limiting assembly is further included.

[0015] The limiting assembly comprises a fixed groove, a spring column and a U-shaped clamping block.

[0016] The upper end of the fixed groove is fixed on the lower surface of the lower closed pipe and is located at the side of the connecting pipe, the upper end of the spring column is fixed inside the fixed groove, and the upper surface of the U-shaped clamping block is fixed on the lower end of the spring column.

[0017] As the preferred technical scheme, the upper segment of the U-shaped clamping block is movably connected inside the fixed groove, and the lower segment is movably connected on the rotating disc.

[0018] The beneficial effects of the utility model are as follows:

[0019] Firstly, the utility model discloses a preventing deviation assembly, which is arranged on the tee pipe, and is used for preventing the rubber disc from deviating from the original position in the tee pipe.

[0020] Secondly, based on the beneficial effects, the limiting assembly is arranged, when the rotating disc rotates and approaches the lower surface of the lower closed pipe, the U-shaped clamping block is pushed upward, the rotating disc is continuously rotated until the rotating disc rotates to the uppermost end, and the U-shaped clamping block is released, at this time, the spring column in the fixed groove is stretched, and the U-shaped clamping block is clamped on the connecting column in the middle of the rotating disc, which can prevent the rotating disc from moving due to external force and causing the rubber disc in the tee pipe to deviate from the original position. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is the plugging connecting piece structure schematic view of the utility model;

[0023] Figure 3 It is the position schematic view of the utility model's limiting assembly;

[0024] Figure 4 It is the Figure 3 The enlarged view of A in the middle;

[0025] Figure 5 It is the limiting assembly structure schematic view of the utility model.

[0026] In the drawing, the component list represented by each sign is as follows:

[0027] 10, three-way pipe; 11, lower closed pipe; 12, plug plate; 13, blind cover; 20, connecting pipe; 21, rubber disc; 22, bearing; 23, adjusting screw; 24, rotating disc; 30, fixed groove; 31, spring column; 32, U-shaped clamping block. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model embodiment more clear, the utility model technical scheme will be described clearly and completely below in combination with embodiments.

[0029] Please refer to Figures 1-3 The embodiment is a pipeline plugging structure that can work under pressure, comprising:

[0030] The plugging connecting piece comprises a three-way pipe 10 and a lower closed pipe 11.

[0031] The lower closed pipe 11 is welded at the lower end of the three-way pipe 10.

[0032] The three-way pipe 10 serves as a connection and support, and is used for installing special gate valves, hole openers and plugging devices during plugging, and the lower closed pipe 11 can avoid damaging the three-way pipe 10 when cutting the pipeline in the three-way pipe 10.

[0033] The anti-deviation assembly comprises a connecting pipe 20, a rubber disc 21, a bearing 22, an adjusting screw 23 and a rotating disc 24.

[0034] The connecting pipe 20 is fixed at the middle part of the lower end of the lower closed pipe 11 and communicates with the lower closed pipe 11, the bearing 22 is fixed at the middle part of the lower end of the rubber disc 21, the adjusting screw 23 is screwed in the connecting pipe 20, the upper end of the adjusting screw 23 is inserted in the bearing 22, and the rotating disc 24 is fixed at the lower end of the adjusting screw 23.

[0035] The connecting pipe 20 plays a connecting and adjusting role, the rubber disc 21 plays a supporting and limiting role, the bearing 22 facilitates the rotation and movement of the adjusting screw 23, and the rotating disc 24 facilitates the hand operation of the adjusting screw 23;

[0036] The rubber disc 21 and the bearing 22 are located inside the three-way pipe 10, and the upper surface of the rubber disc 21 is attached to the lower surface of the pipe to be repaired;

[0037] The three-way pipe 10 is divided into upper and lower halves and is installed on the pipe to be repaired by welding;

[0038] The three-way pipe 10 is divided into upper and lower halves and is installed on the pipe to be repaired by welding, which can ensure the firmness of the connection between the three-way pipe 10 and the pipe to be repaired;

[0039] The plugging connecting piece further comprises a plugging plate 12 and a blind cover 13;

[0040] The plugging plate 12 is fixed on the upper end pipe flange of the three-way pipe 10 by screws, and the blind cover 13 is fixed on the upper end pipe flange of the three-way pipe 10 by bolts and is located at the upper end of the plugging plate 12;

[0041] The plugging plate 12 plays a sealing role, and the blind cover 13 plays a sealing role, which can prevent the liquid medium in the pipe from flowing out through the three-way pipe 10.

[0042] Working principle:

[0043] Before repair, rotate the rotating disc 24 to move the rubber disc 21 downward, weld the two three-way pipes 10 on the two ends of the damaged part of the pipe to be repaired, and replace the new pipe after a series of operations such as hole opening, plugging, and replacement;

[0044] After the pipe replacement is completed, the cut pipe inside the three-way pipe 10 is put into the three-way pipe 10, the plugging plate 12 is put in, the screws are inserted into the mounting holes formed on the side of the upper end flange of the three-way pipe 10, the screws are tightened, the flange at the upper end of the three-way pipe 10 is fixed together with the plugging plate 12, and finally the blind cover 13 is fixed on the flange at the upper end of the three-way pipe 10 by bolts;

[0045] At this time, the rotating disc 24 is rotated to drive the adjusting screw 23 to rotate in the connecting pipe 20, so that the adjusting screw 23 moves upward along the connecting pipe 20, drives the bearing 22 and the rubber disc 21 to move upward, and further drives the cut pipe inside the three-way pipe 10 to move upward, and when the adjusting screw 23 rotates to the uppermost end, the cut pipe inside the three-way pipe 10 is inlaid with the original pipe.

[0046] This step can avoid the pipe from sliding downward when the liquid medium flows, which affects the stability of the pipe.

[0047] Please refer to Figures 4-5As shown, the embodiment is based on the above-mentioned embodiment 1 and further comprises;

[0048] The limiting assembly comprises a fixed groove 30, a spring column 31 and a U-shaped clamping block 32.

[0049] The upper end of the fixed groove 30 is fixed on the lower surface of the lower closed pipe 11 and located at the side of the connecting pipe 20, the upper end of the spring column 31 is fixed inside the fixed groove 30, and the upper surface of the U-shaped clamping block 32 is fixed on the lower end of the spring column 31.

[0050] The fixed groove 30 serves as a connection and limiting function, the spring column 31 can realize position change, and the U-shaped clamping block 32 serves as a limiting function.

[0051] The upper segment of the U-shaped clamping block 32 is movably connected inside the fixed groove 30, and the lower segment is movably connected on the rotating disc 24.

[0052] Working principle:

[0053] When the rotating disc 24 rotates and approaches the lower surface of the lower closed pipe 11, the U-shaped clamping block 32 is pushed upward, the spring column 31 inside the fixed groove 30 is compressed, and the upper segment of the U-shaped clamping block 32 moves into the fixed groove 30.

[0054] Continue to rotate the rotating disc 24 until the rotating disc 24 rotates to the uppermost end, and the U-shaped clamping block 32 is loosened, at this time, the spring column 31 inside the fixed groove 30 is stretched, and the U-shaped clamping block 32 is clamped on the connecting column in the middle of the rotating disc 24.

[0055] This step can avoid the rotating disc 24 from moving due to external force, so as to cause the position of the rubber disc 21 in the three-way pipe 10 to deviate.

[0056] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them.

Claims

1. A pipe plugging structure operable under pressure, characterised in that, The utility model relates to a pipeline maintenance device, including: The plugging connector includes a tee pipe (10) and a lower closed pipe (11); The lower closed pipe (11) is welded at the lower end of the tee pipe (10); The anti-deviation assembly includes a connecting pipe (20), a rubber disc (21), a bearing (22), an adjusting screw rod (23) and a rotating disc (24); The connecting pipe (20) is fixed at the middle part of the lower end of the lower closed pipe (11) and communicates with the lower closed pipe (11), the bearing (22) is fixed at the middle part of the lower end of the rubber disc (21), the adjusting screw rod (23) is screwed in the connecting pipe (20), and the upper end of the adjusting screw rod (23) is inserted into the bearing (22), and the rotating disc (24) is fixed at the lower end of the adjusting screw rod (23).

2. The pressurizable pipe plugging structure of claim 1, wherein, The rubber disc (21) and the bearing (22) are located in the tee pipe (10), and the upper surface of the rubber disc (21) is attached to the lower surface of the pipeline to be maintained.

3. The pressurizable pipe plugging structure of claim 1, wherein, The tee pipe (10) is divided into two halves, which are installed on the pipeline to be maintained by welding.

4. The pressurizable pipe plugging structure of claim 1, wherein, The plugging connector further includes a plug plate (12) and a blind cover (13); The plug plate (12) is fixed by screws at the upper end of the pipeline flange of the tee pipe (10), and the blind cover (13) is fixed by bolts at the upper end of the pipeline flange of the tee pipe (10) and located at the upper end of the plug plate (12).

5. The pressurizable pipe plugging structure of claim 1, wherein, Further including a limiting assembly; The limiting assembly includes a fixed groove (30), a spring column (31) and a U-shaped clamping block (32); The upper end of the fixed groove (30) is fixed to the lower surface of the lower closed pipe (11) and located at the side of the connecting pipe (20), the upper end of the spring column (31) is fixed inside the fixed groove (30), and the upper surface of the U-shaped clamping block (32) is fixed to the lower end of the spring column (31).

6. A pressurisable pipeline isolation structure according to claim 5, wherein, The upper segment of the U-shaped clamping block (32) is movably connected in the fixed groove (30), and the lower segment is movably connected on the rotating disc (24).

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