Combined liquid blocking device for tile opening and welding of conveying pipeline and using method of combined liquid blocking device

Abstract

The invention belongs to the technical field of conveying pipeline maintenance, and particularly relates to a combined liquid blocking device for conveying pipeline shingling and welding and a using method.The combined liquid blocking device comprises a mother plate with a U-shaped groove, a semicircular cementing liquid blocking plate and a height adjusting device, one end of the height adjusting device is connected with the mother plate, the cementing liquid blocking plate is clamped in the U-shaped groove of the mother plate, and the other end of the height adjusting device is connected with the U-shaped groove of the mother plate; the other end of the height adjusting device abuts against the inner wall of the pipeline, the semicircular cementing liquid blocking plate abuts against the inner wall of the pipeline in a matched mode, a drainage hole is formed in a panel of the semicircular cementing liquid blocking plate, and a pipe joint is fixed to the drainage hole. Based on the technical problem that residual flowing liquid media in a pipeline cannot be welded for leaking stoppage, the liquid stopping device suitable for being used in various different pipe diameters is designed, the functions of 1 / 2 pipeline daub sealing and leakage prevention, connection hose liquid discharging and double nipple adjusting and radial limiting are achieved, the purpose of rapidly stopping flowing of residual liquid in the pipeline through a power pipe network is achieved, and the working efficiency is improved. And the effect of helping a welder to quickly weld and process the pipeline leakage point is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline maintenance, and in particular relates to a combined liquid blocker for welding tile openings in a pipeline and a use method thereof. Background Art

[0002] After years of operation, industrial pipelines often experience leaks, leading to fluid loss and resulting in economic losses. Due to aging, loose valves or pipelines located in low-lying areas, welders are unable to weld directly to the leaking points on the outside of the pipeline. Instead, they resort to cutting the pipeline with tile-cutting. After the tile-cutting, the remaining liquid inside the pipeline cannot be drained in time, preventing welders from cutting and welding within the remaining liquid. This directly impacts the progress of pipeline welding and maintenance, delays production network operations, and causes significant economic losses for the company. Summary of the Invention

[0003] A combined liquid blocker for welding tile openings in a conveying pipeline and a method of use. Based on the technical difficulty of preventing residual flowing liquid media in the pipeline from being welded and plugged, a liquid blocker device suitable for use with a variety of pipe diameters is designed. It has the functions of sealing and leak-proofing 1 / 2 pipeline mortar, draining liquid from the connecting hose, and adjusting radial limit for the thread, thereby achieving the purpose of quickly blocking the flow of residual liquid in the power pipeline network and helping welders to quickly weld and deal with pipeline leaks.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A combined liquid barrier for welding tile openings in a conveying pipeline comprises a motherboard with a U-shaped groove, a semicircular glue-mounted liquid barrier plate and a height adjustment device, one end of the height adjustment device being connected to the motherboard, the glue-mounted liquid barrier plate being clamped in the U-shaped groove of the motherboard, the other end of the height adjustment device being mounted on the top of the inner wall of the pipeline, the semicircular glue-mounted liquid barrier plate being mounted on the top of the inner wall of the pipeline, a drainage hole being provided on the panel of the semicircular glue-mounted liquid barrier plate, and a pipe joint being fixed at the drainage hole.

[0006] The height adjustment device includes an upper support seat, an adjusting nut, a positive top screw and a negative top screw. The positive top screw and the negative top screw are respectively screwed on the two ends of the adjusting nut. One end of the positive top screw and the negative top screw after being screwed with the adjusting nut is connected to the motherboard, and the other end is connected to the top of the upper support seat.

[0007] The end of the positive buckle top screw or the reverse buckle top screw is provided with a pin hole, the end surface of the motherboard is fixed with a lower column pin seat, and the lower column pin seat is also provided with a pin hole, and the end of the positive buckle top screw or the reverse buckle top screw is connected to the lower column pin seat through a column pin.

[0008] The glue-mounted liquid-blocking board comprises a T-shaped main board and a glue panel with a U-shaped groove. The glue panel is fixedly sleeved on the outer surface of the main board, and the head of the main board is fitted in the U-shaped groove of the motherboard.

[0009] A method for using a combined liquid blocker for welding a conveying pipeline includes the following steps:

[0010] 1) According to the diameter of the pipe to be welded, select a glue-mounted liquid-blocking plate with a suitable diameter and assemble the glue-mounted liquid-blocking plate with the motherboard;

[0011] 2) Connect the drainage hose to the pipe joint on the semicircular glue-mounted liquid-blocking plate panel;

[0012] 3) Cut the pipeline at the front end of the leak input direction, first install the assembled liquid blocker into the pipeline, and screw the adjusting nut in the height adjustment device to make the height adjustment device and the glue-mounted liquid blocker press against the inner wall of the pipeline respectively. At this time, the glue-mounted liquid blocker is sealed with the lower semicircle of the pipeline;

[0013] 4) Lead the drainage hose out of the pipe from the tile opening;

[0014] 5) Weld the leaking point.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The present invention completely solves the technical bottleneck problem of welders being unable to cut and weld pipeline leaks when the pipeline is wet, greatly reducing the workers' operating intensity and shortening the welding maintenance time.

[0017] 2) The structure of the present invention is simple to assemble, and is convenient for combined application with various pipe diameters.

[0018] 3) This invention achieves the production goals of safe, stable, and efficient pipeline maintenance. Compared with the original maintenance process, it solves the bottleneck problem of the original inability to perform maintenance under water, greatly reduces the operating intensity of workers, and achieves the goal of safe production of equipment.

[0019] 4) The present invention only requires two welders and two adjustments to the wire alignment device to install and remove the liquid blocker. A pipeline welding repair project can be quickly completed in 60 minutes, saving 3-4 workers compared to the previous method and reducing the pipeline welding time by 120-480 minutes, greatly shortening the maintenance time and thus improving the production efficiency of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 1 Middle: 1. Motherboard; 2. Glue-mounted liquid-blocking board; 3. Height adjustment device.

[0022] Figure 2 It is an enlarged main view of the motherboard in the present invention.

[0023] Figure 3 yes Figure 2 side view.

[0024] Figure 2 and Figure 3 Middle: 1-2, U-shaped groove; 1-3, lower pin seat; 1-4, pin.

[0025] Figure 4 This is an enlarged view of the assembly structure of the glue-bound liquid-blocking board and the motherboard.

[0026] Figure 5 yes Figure 4 side view.

[0027] Figure 4 and Figure 5 Middle: 2-1, pipe joint; 2-2, plastic panel; 2-3, main board.

[0028] Figure 6 It is a structural diagram of a height adjustment device.

[0029] Figure 7 yes Figure 6 Magnified image of .

[0030] Figure 6 and Figure 7 Middle: 3-1, forward-facing jackscrew; 3-2, reverse-facing jackscrew; 3-3, adjusting nut; 3-4, upper support seat. DETAILED DESCRIPTION

[0031] The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0032] See Figure 1-Figure 7 A combined liquid barrier for welding tile openings in a conveying pipeline comprises a motherboard 1 with a U-shaped groove 1-2, a semicircular glue-mounted liquid barrier plate 2 and a height adjustment device 3, one end of the height adjustment device 3 is connected to the motherboard 1, the glue-mounted liquid barrier plate 2 is clamped in the U-shaped groove 1-2 of the motherboard 1, the other end of the height adjustment device 3 is mounted on the top of the inner wall of the pipeline, the semicircular glue-mounted liquid barrier plate 2 is mounted on the inner wall of the pipeline, a drainage hole is provided on the panel of the semicircular glue-mounted liquid barrier plate 2, and a pipe joint 2-1 is fixed at the drainage hole.

[0033] The height adjustment device 3 includes an upper support seat 3-4, an adjusting nut 3-3, a positive top screw 3-1 and a negative top screw 3-2. The positive top screw 3-1 and the negative top screw 3-2 are respectively screwed on the two ends of the adjusting nut 3-3. One end of the positive top screw 3-1 and the negative top screw 3-2 screwed with the adjusting nut 3-3 is connected to the motherboard 1, and the other end is connected to the upper support seat 3-4.

[0034] The end of the positive buckle top screw 3-1 or the reverse buckle top screw 3-2 is provided with a pin hole, and the end face of the motherboard 1 is fixed with a lower column pin seat 1-3, and the lower column pin seat 1-3 is also provided with a pin hole. The end of the positive buckle top screw 3-1 or the reverse buckle top screw 3-2 is connected to the lower column pin seat 1-3 through a column pin 1-4.

[0035] The glue-bound liquid-blocking board 2 includes a T-shaped main board 2-3 and a glue panel 2-2 with a U-shaped groove. The glue panel 2-2 is fixedly sleeved on the outer surface of the main board 2-3, and the head of the main board 2-3 is engaged with the U-shaped groove 1-2 of the motherboard 1.

[0036] A method for using a combined liquid blocker for welding a conveying pipeline includes the following steps:

[0037] 1) Select a glue-mounted liquid-blocking plate 2 with a suitable diameter according to the diameter of the pipe to be welded, and assemble the glue-mounted liquid-blocking plate 2 with the motherboard 1;

[0038] 2) Connect the drainage hose to the pipe joint 2-1 on the panel of the semicircular glue-mounted liquid-blocking plate 2;

[0039] 3) Cut the pipeline at the front end of the leak input direction, first install the assembled liquid blocker into the pipeline, and screw the adjusting nut 3-3 in the height adjustment device 3 to make the height adjustment device 3 and the glue-mounted liquid blocker 2 press against the inner wall of the pipeline respectively. At this time, the glue-mounted liquid blocker 2 is in a sealed connection with the lower semicircle of the pipeline;

[0040] 4) Lead the drainage hose out of the pipe from the tile opening;

[0041] 5) Weld the leaking point.

[0042] The glue-mounted liquid-blocking plate 2 can be adaptively manufactured, assembled and used for various pipe diameters such as DN219, DN273, DN325, DN377 and DN426.

[0043] The motherboard 1 is made of 20mm thick steel plate and is 200mm long. A 10mm wide by 10mm high slot is cut at the centerline of the motherboard's lower end for connection to the liquid-blocking plate 2. Multiple glue-bonded liquid-blocking plates are available with radii of R140, R170, R188, and R250. The mainboard is 3mm steel plate, with 3mm glue applied to both sides and ends to accommodate interchangeable pipes of varying diameters. Drain holes are provided in the glue-bonded liquid-blocking plate 2, where two 2-inch drain pipe connectors with two-way valves are installed.

[0044] The height adjustment device 3 is composed of an adjustment nut and two tensioning screws with positive and negative buckles. The lower end is fixed to the upper end of the motherboard, and the upper end is adjusted to press into the pipeline to play a radial fixing and limiting function.

[0045] When enterprise welder operators confirm that the industrial transmission pipeline network is leaking and cannot be welded externally, the device and method of the present invention can be used to quickly complete internal welding and leak repair work at leak points of various pipe diameters.

[0046] The welder cuts the pipe at the front end of the leaking point, opening the tile for welding. First, based on the pipe diameter, the welder inserts the glued liquid barrier plate 2 into the U-shaped groove of the motherboard 1. The height adjustment device 3 is then manually fixed radially into the pipe, sealing the glued liquid barrier plate 2 against the pipe wall to achieve the desired liquid barrier. During the welding process, the two-way valve on the pipe joint is opened and an external drain hose is connected to ensure that the hydraulic discharge does not affect the pipe welding. Finally, once the leaking point is welded and defect-free, the welder removes the combined liquid barrier and reinstalls the partially removed pipe tile for welding. The work is concluded only after the pipe is tested for leaks.

Claims

1. A combined liquid blocker for welding pipes, characterized in that: It includes a motherboard with a U-shaped groove, a semicircular glue-mounted liquid-blocking plate and a height adjustment device, one end of the height adjustment device is connected to the motherboard, the glue-mounted liquid-blocking plate is clamped in the U-shaped groove of the motherboard, the other end of the height adjustment device is mounted on the top of the inner wall of the pipeline, the semicircular glue-mounted liquid-blocking plate is mounted on the inner wall of the pipeline, a drainage hole is provided on the panel of the semicircular glue-mounted liquid-blocking plate, and a pipe joint is fixed at the drainage hole.

2. A combined liquid blocker for welding pipes according to claim 1, characterized in that: The height adjustment device includes an upper support seat, an adjusting nut, a positive top screw and a negative top screw. The positive top screw and the negative top screw are respectively screwed on the two ends of the adjusting nut. One end of the positive top screw and the negative top screw after being screwed with the adjusting nut is connected to the motherboard, and the other end is connected to the top of the upper support seat.

3. A combined liquid blocker for welding pipes according to claim 2, characterized in that: The end of the positive buckle top screw or the reverse buckle top screw is provided with a pin hole, the end surface of the motherboard is fixed with a lower column pin seat, and the lower column pin seat is also provided with a pin hole, and the end of the positive buckle top screw or the reverse buckle top screw is connected to the lower column pin seat through a column pin.

4. A combined liquid blocker for welding pipes according to claim 2, characterized in that: The adjusting nut is a hexagonal adjusting nut.

5. The combined liquid resistor for welding of pipeline tiles according to claim 1, characterized in that: The glue-mounted liquid-blocking board comprises a T-shaped main board and a glue panel with a U-shaped groove. The glue panel is fixedly sleeved on the outer surface of the main board, and the head of the main board is fitted in the U-shaped groove of the motherboard.

6. A method for using the combined liquid blocker for welding the pipeline as claimed in any one of claims 1 to 5, characterized in that: The method comprises the following steps: 1) According to the diameter of the pipe to be welded, select a glue-mounted liquid-blocking plate with a suitable diameter and assemble the glue-mounted liquid-blocking plate with the motherboard; 2) Connect the drainage hose to the pipe joint on the semicircular glue-mounted liquid-blocking plate panel; 3) Cut the pipeline at the front end of the leak input direction, first install the assembled liquid blocker into the pipeline, and screw the adjusting nut in the height adjustment device to make the height adjustment device and the glue-mounted liquid blocker press against the inner wall of the pipeline respectively. At this time, the glue-mounted liquid blocker is sealed with the lower semicircle of the pipeline; 4) Lead the drainage hose out of the pipe from the tile opening; 5) Weld the leaking point.

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