A non-suspension repair structure for underground pipeline damage and construction method

Abstract

The application discloses a kind of underground pipeline damage exempt from suspension repair structure and construction method, repair structure includes pipeline, plugging structure and drain pipe, the plugging structure is established on pipeline, covers on damaged location, the drain pipe is connected with plugging structure;The plugging structure includes cover and plugging piece, the cover is established at the damaged mouth of pipeline, and the damaged mouth is plugged, the plugging piece is established on cover, and the drain pipe is connected with plugging piece.The plugging structure of the application uses the cooperation of cover and plugging piece, plugging piece is not installed on cover when welding, avoid the defect that cover is inconvenient to weld due to excessive pressure, plugging piece is installed on cover after welding is completed to realize the plugging of damaged pipeline, realizes the quick, safe damaged repair operation under the condition that pipeline operation is not suspended.

Description

Technical Field

[0001] This invention relates to the field of pipeline repair technology, specifically to a structure and construction method for repairing damaged underground pipelines without interruption. Background Technology

[0002] When constructing in areas with numerous underground pipelines, accidents involving construction machinery damaging existing pipelines frequently occur. The most convenient method for repairing damaged pipelines is to shut off the gate and then weld the repair. However, in most cases, the damage location is remote, making it impossible to determine the gate's position, or due to objective reasons, shutting off the gate for repair is not feasible. Repair must then be carried out while the pipeline is still in operation. This requires minimizing construction time, reducing operational complexity, and ensuring safety. Existing technologies for repairing pipelines in operation, such as the solution disclosed in CN109578741B, involve excessively long construction times and are cumbersome and complex, hindering rapid emergency repairs. This invention provides a structure and construction method for repairing damaged underground pipelines without interruption of work to solve the above problems. Summary of the Invention

[0003] This invention provides a structure and construction method for repairing damaged underground pipelines without interrupting operation, achieving rapid and safe pipeline repair without stopping pipeline operation.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] A repair structure for underground pipeline damage that does not require interruption includes a pipeline, a sealing structure, and a drainage pipe. The sealing structure is installed on the pipeline and covers the damaged area. The drainage pipe is connected to the sealing structure.

[0006] The sealing structure includes a cover and a sealing element. The cover is placed at the damaged opening of the pipe to seal the damaged opening, and the sealing element is placed on the cover. The drain pipe is connected to the sealing element.

[0007] Furthermore, the sealing component includes a connector and a plug, the connector being disposed on the cover, and the plug being detachably connected to the connector;

[0008] During repair, the drain pipe is connected to the connector; during sealing, the plug is placed on the connector.

[0009] Furthermore, the plug is provided with a water-draining groove, which is spaced apart on the plug and located at the lower part of the plug.

[0010] Furthermore, the cover is a tapered structure, and the sealing element is located at the top of the cover.

[0011] Furthermore, the angle between the inner wall of the cover and the outer wall of the pipe is an acute angle.

[0012] Furthermore, the cover has a fan-shaped structure, and the water outlet of the pipe rupture point faces the inner wall of the cover.

[0013] Furthermore, the cover is a tubular structure and is inclinedly installed at the broken opening of the pipe.

[0014] A construction method for repairing damaged underground pipelines without interruption of repair work includes the following steps:

[0015] S1, Component fabrication: Determine the structure of the cover according to the shape of the damaged opening on the pipe, and fabricate the cover and sealing parts of the corresponding size respectively, and connect the connector and the cover into one piece;

[0016] S2, Positioning Pre-installation: Cover the damaged part of the pipe with the cover, making it fit the pipe completely, and then connect the drain pipe to the connector to divert the material in the pipe to a safe location.

[0017] S3, Welding Fixing: Welding fixing is performed when the material overflowing from the pipe at the joint between the cover and the pipe does not affect the welding operation. Welding is performed from front to back according to the flow direction of the material inside the pipe.

[0018] S4, Pipe sealing: After welding is completed, remove the drain pipe and install the plug on the connector. After installation, check whether there are any leaks in the weld between the cover and the pipe, and perform repair welding as needed.

[0019] The beneficial effects of this invention are as follows:

[0020] The sealing structure uses a combination of a cover and a sealing component. During welding, the sealing component is not installed on the cover to avoid the defect of inconvenient welding of the cover due to excessive pressure. After welding, the sealing component is installed on the cover to seal the damaged pipeline, enabling fast and safe damage repair without interrupting pipeline operation.

[0021] A cover is used to cover the damaged part of the pipe. The drain pipe is used to divert the material from the pipe, reducing the pressure between the cover and the pipe. This reduces the difficulty of the cover application and improves the tightness of the fit. It also facilitates the welding and fixing of the cover and effectively prevents missed welds. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the usage state of the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of one side of an embodiment of the present invention;

[0024] Figure 3 This is a front sectional view of Embodiment 1 of the present invention;

[0025] Figure 4 This is a side view schematic diagram of Embodiment 2 of the present invention;

[0026] Figure 5 This is a front sectional view of Embodiment 2 of the present invention;

[0027] Figure 6 This is a side sectional view of Embodiment 3 of the present invention;

[0028] Figure 7 This is a front sectional view of Embodiment 4 of the present invention;

[0029] Figure 8 This is a schematic diagram of the plug structure of the present invention.

[0030] Reference numerals: 1-pipe, 2-sealing structure, 21-covering component, 22-sealing component, 221-connector, 222-plug, 3-drain pipe. Detailed Implementation

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0033] like Figure 1 As shown, a structure for repairing underground pipeline damage without interruption includes a pipeline 1, a sealing structure 2, and a drainage pipe 3. The sealing structure 2 is installed on the pipeline 1 and covers the damaged area. The drainage pipe 3 is connected to the sealing structure 2.

[0034] like Figure 3 , 5 As shown in Figures 6 and 7, the sealing structure 2 includes a cover 21 and a sealing element 22. The cover 21 is located at the damaged opening of the pipe to seal the damaged opening. The sealing element 22 is located on the cover 21. The drain pipe 3 is connected to the sealing element 22.

[0035] The sealing structure 2 consists of a cover 21 and a plug 22. The cover 21 covers the damaged area of ​​the pipe, and a flow channel is formed on the cover 21 through a connector 221. The plug 222 is connected to the connector 221 to form a closed space, thus repairing the damaged pipe. During welding, the material inside the pipe flows out from the channel on the connector 221 and is discharged through the drain pipe 3, reducing the pressure between the cover 21 and the outer wall of the pipe. This allows the cover 21 to stably cover the damaged area of ​​the pipe and perform the welding operation. After welding and fixing, the plug 222 is then installed on the connector 221 to seal the flow channel, thus sealing the damaged area of ​​the pipe and achieving pipe repair. Compared with existing pipe repair methods, this invention does not require the use of a leak-stopping device to seal the damaged area of ​​the pipe. By setting up a flow channel through the connector 221 to drain the water, the pressure is reduced, facilitating the installation and welding of the cover 21.

[0036] like Figure 2 , 3 As shown, the sealing member 22 further includes a connector 221 and a plug 222. The connector 221 is disposed on the cover member 21, and the plug 222 is detachably connected to the connector 221.

[0037] During repair, the drain pipe 3 is connected to the connector 221; during sealing, the plug 222 is placed on the connector 221.

[0038] like Figure 8 As shown, the plug 222 is further provided with a water-leaking groove, which is spaced apart on the plug 222 and located at the lower part of the plug 222. The water-leaking groove is provided to reduce the installation difficulty of the plug 222. After the cover 21 is welded, when the plug 222 is installed on the connector 221 to seal the flow channel, the pressure inside the channel is too high, making the installation of the plug 222 inconvenient. By providing a water-leaking groove on the plug 222, the material inside the pipe can flow out from the water-leaking groove when the plug 222 is first placed on the connector 221, reducing the installation difficulty of the plug 222. As the plug 222 is gradually installed, its installation state gradually stabilizes, and the water-leaking groove is gradually sealed. When the plug 222 is fully installed, the water-leaking groove is also completely sealed, at which point the damaged part of the pipe is also completely sealed.

[0039] Furthermore, the drainage channel has an arc-shaped structure, with the channel shape gradually decreasing from bottom to top.

[0040] According to the different shapes and sizes of pipe damage, the present invention uses sealing parts 22 of different shapes and specifications to ensure complete repair of the pipe while minimizing the impact on the pipe's shape.

[0041] like Figure 2 , 3As shown in Embodiment 1 of the present invention, it is applicable to situations where there is a long strip-shaped break in the pipe and the pressure inside the pipe is too high. The cover 21 adopts an oblique cone structure and covers the strip-shaped break in the pipe. The connector 221 is located at the top of the cover 21 and serves as a flow channel for the material inside the pipe. When the cover 21 is installed on the outer wall of the pipe, it guides the material discharged from the break in the pipe away, reduces the pressure between the cover 21 and the pipe wall, and facilitates the installation, positioning and welding of the cover 21.

[0042] In Embodiment 1, the angle between the inclination angle of the inner wall of the inclined cone cover 21 and the outer wall of the pipe is an acute angle, and it forms an acute reflection angle with the water outlet direction of the pipe rupture. The water outlet direction of the pipe rupture is aligned with the inner wall of the cover 21, and after impacting the inner wall of the cover 21, the reflection direction is towards the connector 221. The angle between the water outlet direction of the pipe rupture and the inclination angle of the inner wall of the cover 21 is an acute angle. The above structure can effectively reduce the impact and load of the water outlet on the cover 21, and at the same time, it can effectively guide the material sprayed from the rupture, making it convenient to be discharged through the drain pipe 3.

[0043] like Figure 4 , 5 As shown, in Embodiment 2 of the present invention, it is applicable to situations where there is a relatively uniform length and width of the pipe opening and the pressure inside the pipe is too high. The cover 21 has a fan-shaped structure and can directly cover the opening. The water outlet direction of the pipe opening is towards the inner wall of the cover 21.

[0044] In Example 2, the water outlet of the broken mouth faces the inner wall of the fan-shaped structure cover 21 and forms an acute reflection angle with the inner wall of the fan-shaped structure cover 21. After the water impacts the inner wall of the fan-shaped structure cover 21, it is refracted upward and discharged through the connector 221.

[0045] like Figure 6 As shown in Embodiment 3 of the present invention, the cover 21 is a cylindrical structure with an inclined cut-out at its lower part to fit the outer wall of the pipe. It is inclinedly set on the pipe and covers the damaged opening of the pipe. It is suitable for long strip-shaped damaged openings on the pipe and when the pressure inside the pipe is not high. The angle of its inner wall is the same as the angle of the inclined cone cover 21.

[0046] In Example 3, the outlet of the cylindrical cover 21 can be replaced by a valve instead of the plug 22. A ball valve or gate valve is installed at the top of the cylindrical cover 21. During welding, the valve is opened to drain and relieve pressure. After welding is completed, the valve can be closed directly.

[0047] like Figure 7As shown, in Embodiment 4 of the present invention, it is applicable to small point-like breaks. The connector 221 is directly installed at the pipe break, and the water outlet of the pipe break faces the inner wall of the connector 221, avoiding direct contact with the outlet of the connector 221. After the connector 221 is welded and fixed, the plug 222 is directly installed, and there is no need to install a drain pipe 3 for drainage.

[0048] Furthermore, the plug 222 is provided with a sealing gasket.

[0049] Furthermore, the connector 221 and the plug 222 are connected by threads.

[0050] Preferably, the connector 221 is a threaded nut and the plug 222 is a threaded plug.

[0051] A construction method for repairing damaged underground pipelines without interruption of repair work includes the following steps:

[0052] S1, Component fabrication: Determine the structure of the cover 21 according to the shape of the damaged opening on the pipe, and fabricate the cover 21 and the sealing part 22 of the corresponding size respectively, and connect the connector 221 and the cover 21 into one piece;

[0053] S2, Positioning and Pre-installation: Cover the damaged opening of the pipe with the cover 21, making it completely fit the pipe, and then connect the drain pipe 3 to the connector 221 to divert the material in the pipe to a safe position.

[0054] S3, Welding Fixing: Welding fixing is performed when the material overflowing from the joint between the cover 21 and the pipe does not affect the welding operation. Welding is performed in the direction of the material flow from front to back.

[0055] S4, Pipe sealing: After welding is completed, remove the drain pipe 3 and install the plug 222 on the connector 221. After installation, check whether there is any missing weld between the cover 21 and the pipe, and perform repair welding as needed. After the operation is completed, cover the outside with an anti-corrosion layer.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A structure for repairing underground pipelines without interruption of repair, characterized in that, It includes a pipe (1), a sealing structure (2) and a drain pipe (3), wherein the sealing structure (2) is installed on the pipe (1) and covers the damaged area, and the drain pipe (3) is connected to the sealing structure (2); The sealing structure (2) includes a cover (21) and a sealing element (22). The cover (21) is located at the broken opening of the pipe to seal the broken opening. The sealing element (22) is located on the cover (21). The drain pipe (3) is connected to the sealing element (22). The sealing component (22) includes a connector (221) and a plug (222). The connector (221) is located on the cover (21), and the plug (222) is detachably connected to the connector (221). During repair, the drain pipe (3) is connected to the connector (221), and during sealing, the plug (222) is located on the connector (221). The angle between the inner wall of the cover (21) and the outer wall of the pipe is an acute angle, and it forms an acute reflection angle with the water outlet direction of the pipe rupture. The water outlet direction of the pipe rupture is aligned with the inner wall of the cover (21). After impacting the inner wall of the cover (21), the reflection direction is towards the connector (221).

2. The underground pipeline damage repair structure without interruption as described in claim 1, characterized in that: The plug (222) is provided with a water leakage groove, which is spaced apart on the plug (222) and located at the lower part of the plug (222).

3. The underground pipeline damage repair structure without interruption as described in claim 1, characterized in that: The cover (21) has an oblique cone structure, and the sealing element (22) is located on top of the cover (21).

4. The underground pipeline damage repair structure without interruption as described in claim 1, characterized in that: The cover (21) has a fan-shaped structure, and the water outlet of the pipe rupture point faces the inner wall of the cover (21).

5. The underground pipeline damage repair structure without interruption as described in claim 1, characterized in that: The cover (21) is a tubular structure and is inclinedly installed at the broken opening of the pipe.

6. A construction method for a repair structure for damaged underground pipelines without interruption, as described in any one of claims 1-5, characterized in that, Includes the following steps: S1, Component fabrication: Determine the structure of the cover (21) according to the shape of the damaged opening on the pipe, and fabricate the cover (21) and the sealing part (22) of the corresponding size respectively, and connect the connector (221) and the cover (21) into one piece; S2, Positioning and Pre-installation: Cover the damaged opening of the pipe with the cover (21) so that it fits the pipe completely, and then connect the drain pipe (3) to the connector (221) to divert the material in the pipe to a safe location; S3, Welding and fixing: Welding and fixing shall be carried out when the material overflowing from the joint between the cover (21) and the pipe does not affect the welding operation, and welding shall be carried out in the direction of the material flow from front to back. S4, Pipe sealing: After welding is completed, remove the drain pipe (3), install the plug (222) on the connector (221), check whether there is any missing weld between the cover (21) and the pipe after installation, and perform repair welding as needed.

Images