Distraction device for pipeline plugging blind plate
By designing a semi-ringed ring opening device for pipes, the problem of inconvenience in accessing traditional welded iron is solved, and flexible, safe and efficient operation of plugging blind plates is achieved.
Patent Information
- Application Number
- CN202421497869.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-27
AI Technical Summary
When traditional pipelines are pumped and blocked blind plates, welded iron is needed, which has problems such as inconvenience, inflexibility, and safety hazards.
A stretching device including four half-ringed rings is designed. Through the slow movement of the snap ring and the pipe, the nut is adjusted to adjust the position of the snap ring, the flange is stretched, and the blind plate is plugged.
It realizes the flexibility and safety of blind plate extraction and blocking operations, avoids the use of welding iron, simplifies the operation process, and improves work efficiency.
Smart Images
Figure CN222634116U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pipeline maintenance, and in particular relates to a propping device for a blind plate used for pipeline extraction and plugging. Background Art
[0002] When inspecting and repairing industrial gas pipelines, it is necessary to install blind plates at the valves and flange connections of the pipelines. Therefore, the operation involves sealing or removing the blind plates. In order not to affect the normal progress of other production, the main pipeline is generally not stopped. After the gas branch pipe reduces the gas pressure in the pipeline, the blind plates are removed and blocked with gas. In this way, the blind plates can be removed and blocked without affecting production and construction.
[0003] Generally, a blind plate is drawn out by welding a support iron at the installation position of the blind plate of the pipeline flange. The gap at the joint surface of the valve and the flange is propped open by welding the support iron, so as to carry out the operation of drawing out and plugging the blind plate. However, this method of coordinating the drawing out and plugging of the blind plate is inconvenient and inflexible, and the welded support iron is inconvenient to use. The support iron needs to be welded when drawing out and plugging blind plates in different pipelines, and the support iron needs to be removed when replacing and repairing the pipeline, which increases the workload and is time-consuming and labor-intensive. At the same time, the welding support iron has the problems of unsatisfactory supporting effect and certain safety hazards in hot work. Therefore, a support device that is flexible and convenient to use is needed to cooperate with the operation of drawing out and plugging the blind plate. Utility Model Content
[0004] The utility model aims to provide a propping device for a blind plate for pipeline extraction and plugging, so as to solve the problem that the propping iron needs to be welded and is inconvenient to use when the blind plate is extracted and plugged in the traditional pipeline.
[0005] The technical scheme of the utility model is: a propping device for opening a blind plate for extracting and blocking a pipeline, a valve is arranged on the pipeline, the valve is connected to a flange, a blind plate is arranged between the flange and the valve, and the device comprises four semi-annular clamping rings, every two clamping rings constitute a group of split clamps and are arranged on the pipeline, the valve and the flange are arranged between the two groups of clamping rings, a first connecting piece is arranged on the outer wall of the arc portion of the clamping ring, second connecting pieces are arranged on the outer walls of the two ends of the opening portion of the clamping ring respectively, the second connecting pieces on each group of clamping rings are connected by bolts, a stud support rod is penetrated between the first connecting pieces on the two groups of clamping rings, and adjusting nuts are threadedly connected on both sides of the connection between the stud support rod and the first connecting piece.
[0006] As a further improvement of the utility model, a friction pad is provided on the inner wall of the clamping ring.
[0007] The beneficial effects of the utility model are as follows: the two sets of clamping rings are fixed to the pipeline by tightening the bolts, and the positions of the clamping rings on both sides of the flange are adjusted by adjusting the nuts to rotate forward and reversely. The clamping rings and the pipeline as a whole are slowly moved a certain distance, and the flange is stretched to a certain gap, so as to perform the blind plate extraction and plugging operation.
[0008] The utility model can eliminate the safety risk existing when the blind plate is blocked by drawing out the blind plate because there is no welding support iron on both sides of the flange blind plate; the utility model can be installed in a short time during daily maintenance and can be used at any time without open flame welding on the gas pipeline, and is convenient, simple, flexible, safe and efficient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a structural front view of the utility model;
[0010] Figure 2 It is a structural side view of the utility model;
[0011] Figure 3 It is a front view of the setting state of the utility model.
[0012] In the figure: 1-adjusting nut; 2-stud support rod; 3-clamping ring; 4-bolt; 5-first connecting piece; 6-second connecting piece; 7-pipeline; 8-valve; 9-flange; 10-blind plate; 11-through hole; 12-friction pad. DETAILED DESCRIPTION
[0013] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0014] like Figure 1-Figure 3 As shown, a device for opening a blind plate for pipeline extraction and plugging is provided, a valve 8 is provided on the pipeline 7, the valve 8 is connected to a flange 9, a blind plate 10 is provided between the flange 9 and the valve 8, comprising four semi-annular clamps 3, every two clamps 3 constitute a group of split clamps and are provided on the pipeline 7, the valve 8 and the flange 9 are provided between two groups of clamps 3, a first connecting piece 5 is provided on the outer wall of the arc portion of the clamp 3, and second connecting pieces 6 are respectively provided on the outer walls of the two ends of the opening of the clamp 3, the second connecting pieces 6 on each group of clamps 3 are connected by bolts 4, a stud support rod 2 is penetrated between the first connecting pieces 5 on the two groups of clamps 3, and adjusting nuts 1 are threadedly connected on both sides of the connection between the stud support rod 2 and the first connecting piece 5; through holes 11 are respectively provided on the first connecting piece 5 and the second connecting piece 6; a friction pad 12 is provided on the inner wall of the clamp 3.
[0015] When in use, the two stud support rods 2 are respectively passed through the through holes 11 on the first connecting piece 5 and installed between the first connecting pieces 5 on the two groups of clamping rings 3. Adjusting nuts 1 are respectively sleeved on both sides of the connection between the stud support rods 2 and the first connecting piece 5 through threads. Each group of clamping rings 3 is then installed on the pipes 7 on both sides of the valve 8 and the flange 9. The inner arc surface of the clamping ring 3 and the outer arc surface of the pipe 7 are matched. Bolts 4 are inserted between the through holes 11 on the second connecting piece 6 of each group of clamping rings 3 and tightened, so as to fix each group of clamping rings 3 to the pipe 7. The two semi-annular clamping rings 3 form a group of split clamps, which have the advantages of easy access and installation, strong applicability and practicality. The friction pad 12 on the inner wall of the clamping ring 3 can also reduce the wear of the pipe 7 and the clamping ring 3, thereby improving the stability and safety of component use.
[0016] After the above-mentioned components are installed, the valve 8 is cut off and closed before the blind plate 10 is removed. After all the connecting bolts at the flange 9 are removed, the positions of the clamping rings 3 on both sides of the flange 9 are adjusted by adjusting the nut 1 to rotate forward and reverse. In this process, a group of clamping rings 3 connected to the side of the valve 8 remain stationary, and a group of clamping rings 3 connected to the side of the flange 9 clamp and drive the pipeline 7 to move slowly for a certain distance as a whole, thereby opening a certain gap between the valve 8 and the flange 9, so as to remove the blind plate 10. After the blind plate 10 is removed, the various components are removed to achieve a flexible access effect.
Claims
1. A device for opening a blind plate for pipeline extraction and plugging, wherein a valve is provided on the pipeline, the valve is connected to a flange, and a blind plate is provided between the flange and the valve, characterized in that: The invention comprises four semi-annular clamping rings (3), wherein every two of the clamping rings (3) form a group of split clamps and are arranged on a pipeline (7), the valve (8) and the flange (9) are arranged between the two groups of clamping rings (3), the outer wall of the arc portion of the clamping ring (3) is provided with a first connecting piece (5), and the outer walls of the two ends of the opening of the clamping ring (3) are respectively provided with second connecting pieces (6), the second connecting pieces (6) on each group of clamping rings (3) are connected by bolts (4), and a stud support rod (2) is provided between the first connecting pieces (5) on the two groups of clamping rings (3), and adjusting nuts (1) are threadedly connected on both sides of the connection between the stud support rod (2) and the first connecting piece (5).
2. A device for opening a blind plate for pipeline extraction and plugging according to claim 1, characterized in that: The inner wall of the clamping ring (3) is provided with a friction pad (12).