Pipeline flange leakage stopping device

Abstract

The utility model relates to a pipeline flange leakage stopping device which comprises a first pipeline, a second pipeline, a first flange, a second flange, a lower clamping plate, an upper clamping plate, a fastening nut, a gasket, a threaded hole and a fastening connecting piece. The lower clamping plate is in contact connection with the liquid leakage position of the welding position of the pipeline and the flange, the gasket in the groove of the lower clamping plate is extruded by the upper clamping plate to block the liquid leakage position, the gasket on the inner arc face of the lower clamping plate prevents liquid blocked at the liquid leakage position from flowing out, it is guaranteed that the leaked liquid at the welding position of the pipeline and the flange is blocked, and the leaked liquid is prevented from overflowing outwards due to large pressure in the pipeline; the pipeline flange leakage stopping device can block the leakage point at the welding position of the flange and the pipeline under the condition that production is not stopped.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical pipelines, in particular to a pipeline flange leakage-stopping device. Background Art

[0002] The chemical production process is a continuous process carried out under complex conditions such as high temperature and high pressure, and the raw materials and products are generally flammable, explosive, toxic and harmful. Therefore, once a chemical feed pipeline leaks, the consequences will be disastrous. In the prior art, the connection between two pipelines generally uses two flanges to connect the two flanges together through equipment fasteners, and the outer sides of the two flanges are welded to the pipelines to form an integral sealed pipeline. Due to factors such as incomplete welding, slag inclusions, and corrosion by chemical media, sand holes or cracks will appear at the welding points between the flanges and the pipelines, and liquids will leak out through the sand holes or cracks. To address this problem, the previous method of dealing with this problem is to first isolate the pipe section, and then perform repair welding or replace a new pipe section. This method is not only time-consuming and labor-intensive and inefficient, but also when encountering a critical pipe section, it is necessary to stop the machine before processing, which will seriously affect normal production and cause losses to the company.

[0003] In summary, a pipeline flange leak-proof device is needed, which can plug the leakage point at the welding point between the flange and the pipeline without stopping production, so as to prevent leakage from occurring at the welding point between the flange and the pipeline and cause safety accidents. Summary of the invention

[0004] In order to solve the problem of leakage at the welding place between the flange and the pipeline, the utility model provides a pipeline flange leakage-stopping device. The pipeline flange leakage-stopping device has a simple structure, is easy to disassemble, and can be installed when used. By contacting and connecting the lower clamping plate with the position where the pipeline and the flange are leaking at the welding place, the gasket in the groove of the lower clamping plate is squeezed by the upper clamping plate to block the leakage, and the gasket on the inner arc surface of the lower clamping plate prevents the liquid blocked at the leakage from leaking out, thereby ensuring that the leakage at the welding place between the pipeline and the flange is blocked, and preventing the leakage from bubbling out due to the high pressure in the pipe, causing a safety accident, and affecting normal production. The pipeline flange leakage-stopping device can block the leakage point at the welding place between the flange and the pipeline without stopping production.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A pipe flange leak-proof device, characterized in that the pipe flange leak-proof device comprises a first pipe, a second pipe, a first flange, a second flange, a lower clamp, an upper clamp, a fastening nut, a gasket, a threaded hole and a fastening connector, the first pipe and the first flange are welded together, the second pipe and the second flange are welded together, the lower clamp comprises two first lower clamps and a second lower clamp, the first lower clamp comprises a leak-proof plate, a connector, a support plate, a first groove and a second groove, the leak-proof plate and the support plate are semicircular rings in the shape of an arc, the connector is in the shape of an arc, the connector connects the leak-proof plate and the support plate into a whole, the bottom of the leak-proof plate is provided with a first groove, the inner arc surface of the leak-proof plate is provided with a first groove Two grooves, the gasket is built into the first groove and the second groove, one end of the first lower clamp plate and the second lower clamp plate are respectively provided with a threaded hole, the fastening connector is inserted into the threaded hole to clamp the first lower clamp plate and the second lower clamp plate into a circular clamp plate, the upper clamp plate includes two first upper clamp plates and the second upper clamp plates with the same structure, the first upper clamp plate and the second upper clamp plate are semi-circular rings in the shape of an arc, one end of the first upper clamp plate and the second upper clamp plate are respectively provided with a threaded hole, the fastening connector is inserted into the threaded hole to clamp the first upper clamp plate and the second upper clamp plate into a circular clamp plate, the fastening nut is arranged on the upper clamp plate, the first flange and the second flange are connected, the leak-stop plate is close to the pipe and the flange welding, and the upper clamp plate is close to the support plate.

[0007] Furthermore, the material of the gasket is any one of polytetrafluoroethylene, polypropylene, polyvinyl chloride, and polyethylene.

[0008] Furthermore, the radius of the leak-stopping plate is smaller than the radius of the supporting plate, and the radius of the supporting plate is equal to the radius of the upper clamping plate.

[0009] Furthermore, the radius of the leak-stopping plate is equal to the radius of the supporting plate, and the radius of the supporting plate is equal to the radius of the upper clamping plate.

[0010] The features of this utility model are mainly reflected in:

[0011] The utility model provides a pipeline flange leak-proof device. The pipeline flange leak-proof device has a simple structure, is easy to disassemble, and can be installed when used. By contacting and connecting the lower clamping plate with the position where the pipeline and the flange are welded, the gasket in the groove of the lower clamping plate is squeezed by the upper clamping plate to block the leaking position. The gasket on the inner arc surface of the lower clamping plate prevents the liquid blocked at the leaking position from leaking out, ensuring that the leaking position at the pipeline and the flange welding position is blocked, and preventing the leaking liquid from bubbling out due to the high pressure in the pipe, causing a safety accident, and affecting normal production. The pipeline flange leak-proof device can block the leakage point at the welding position of the flange and the pipeline without stopping production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1This is a schematic diagram of the structure of the pipeline flange leak-proof device of the utility model.

[0013] Figure 2 A top view of the lower clamping plate of the pipeline flange leak-proof device of the utility model

[0014] Figure 3 A top view of the upper clamping plate of the pipeline flange leak-proof device of the utility model

[0015] Figure 4 This is a side view of the lower clamping plate of the pipeline flange leak-proof device of the utility model

[0016] Figure 5 This is a cross-sectional view of the lower clamping plate of the pipeline flange leak-proof device of the utility model

[0017] Among them, the figure markings are as follows: 1-first pipe, 2-second pipe, 3-first flange, 4-second flange, 5-lower clamp, 51-first lower clamp, 52-second lower clamp, 511-leak-stop plate, 512-connecting piece, 513-support plate, 514-first groove, 515-second groove, 6-upper clamp, 61-first upper clamp, 62-second upper clamp, 7-welding point, 8-fastening nut, 9-gasket, 10-threaded hole, 11-fastening connecting piece. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings of the structural schematic diagram of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1As shown, a pipeline flange leak-proof device comprises a first pipeline 1, a second pipeline 2, a first flange 3, a second flange 4, a lower clamp 5, an upper clamp 6, a fastening nut 8, a gasket 9, a threaded hole 10 and a fastening connector 11. The function of the lower clamp 5 is to use the gasket 9 arranged in the groove to block the leakage point at the welding point between the flange and the pipeline. The function of the upper clamp 6 is to use the downward rotation force of the fastening nut 8 to press the lower clamp 5 so that the leakage point at the welding point between the flange and the pipeline is squeezed by the gasket 9 to stop the leakage. The threaded hole 10 and the fastening connector 11 are used together to lock the upper clamp 6 into one body, the lower clamp 5 is locked into one body, the first pipeline 1 and the first flange 3 are welded together, and the second pipeline 2 and the second flange 4 are welded together. Together, the first pipe 1 and the first flange 3 are welded into one body, and the second pipe 2 and the second flange 4 are welded into a whole, so that the first pipe 1 and the second pipe 2 are connected together, and the liquid can flow in the first pipe 1 and the second pipe 2, and the lower clamping plate 5 includes two first lower clamping plates 51 and second lower clamping plates 52 with the same structure, and the first lower clamping plate includes a leak-proof plate 511, a connecting piece 512, a support plate 513, a first groove 514 and a second groove 515. The leak-proof plate 511 is used to block the leakage point at the welding point between the pipe and the flange, and the connecting piece 512 connects the leak-proof plate 511 and the support plate 513 together. The support plate 513 is used to contact and bear force with the upper clamping plate 6, and the leak-proof plate 511 and the support plate 513 are semicircular in arc shape. The first lower clamping plate 51 and the second lower clamping plate 52 are locked into two circular rings in series through threaded holes 10 and fastening connectors 11, and the connecting member 512 is arc-shaped. After the first lower clamping plate 51 and the second lower clamping plate 52 are locked, the connecting member 512 can be closed around the pipeline. The connecting member 512 connects the leak-proof plate (511) and the support plate (513) into a whole. The bottom of the leak-proof plate 511 is provided with a first groove 514, and the inner arc surface of the leak-proof plate 511 is provided with a second groove 515. The gasket 9 is built into the first groove 514 and the second groove 515. One end of the first lower clamping plate 51 and the second lower clamping plate 52 are respectively provided with threaded holes 10, and the fastening connector 11 is inserted into the threaded hole 10. The groove holes 10 hold the first lower clamping plate 51 and the second lower clamping plate 52 tightly into two circular rings connected in series that can pass through the pipe. The inner diameter of the lower clamping plate 5 is the same as the outer diameter of the pipe, so that the lower clamping plate 5 can pass through the pipe and be sleeved on the pipe. The upper clamping plate 6 includes two first upper clamping plates 61 and second upper clamping plates 62 with the same structure. The first upper clamping plate 61 and the second upper clamping plate 62 are semicircular rings in the shape of an arc. The inner diameter of the upper clamping plate 6 is the same as the outer diameter of the pipe, so that the upper clamping plate 6 can pass through the pipe and be sleeved on the pipe. One end of the first upper clamping plate 61 and the second upper clamping plate 62 are respectively provided with threaded holes 10. The fastening connector 11 is inserted into the threaded holes 10 to hold the first upper clamping plate 61 and the second upper clamping plate 62 tightly into a circular clamping plate.The fastening nut 8 is arranged on the upper clamping plate 6, and the first flange 3 and the second flange 4 are connected by fasteners, so that the liquid can flow in the first pipe 1 and the second pipe 2, and the leak-proof plate 511 is close to the flange welding point 7, so that the gasket 9 arranged in the first groove 514 blocks the leakage point on the welding point 7 between the pipe and the flange to prevent the liquid from leaking out. In order to prevent the liquid pressure in the pipe from being too high, the liquid blocked at the leakage point may leak out again from the leakage point, and the gasket in the second groove 515 arranged on the inner arc surface of the leak-proof plate 511 can prevent leakage again. The upper clamping plate 6 is close to the support plate 513, so that when the fastening nut 8 on the upper clamping plate 6 is tightened, the fastening nut 8 passes through the upper clamping plate 6 and presses against the support plate 513. The support plate 513 is pressed downward by the downward tightening force of the fastening nut 8. After the support plate 513 is subjected to force, it is pressed downward toward the leak-proof plate 511 through the connecting piece 512. The gasket 9 set in the first groove 514 at the bottom of the leak-proof plate 511 is squeezed and pressed against the welding point 7 between the pipeline and the flange, thereby stopping the leakage. The gasket set in the second groove 515 on the inner arc surface of the leak-proof plate 511 can prevent leakage again.

[0020] The material of the gasket 9 is any one of polytetrafluoroethylene, polypropylene, polyvinyl chloride, and polyethylene, and is corrosion-resistant. The radius of the leak-stop plate 511 is less than or equal to the radius of the support plate 513. When the size of the flange is small, the radius of the leak-stop plate 511 is smaller than the radius of the support plate 513, so that the leak-stop plate 511 can fit tightly at the welding point between the flange and the pipeline. When the size of the flange is large, the radius of the leak-stop plate 511 is equal to the radius of the support plate 513. This arrangement allows the pipeline flange leak-stopping device to be applicable to flanges of different sizes. The radius of the support plate 513 is equal to the radius of the upper clamping plate 6, so that when the fastening nut on the upper clamping plate 6 is screwed downward, it can pass through the upper clamping plate 6 and press on the support plate 513, so that the entire lower clamping plate 5 is subjected to force to stop leaking.

[0021] The specific workflow is as follows:

[0022] In the production process, when leakage occurs at the welding point between the pipeline and the flange, there is no need to stop the machine. The corresponding fastening connectors 11 provided on the first lower clamping plate 51 and the second lower clamping plate 52 are inserted into the threaded hole 10, so that the first lower clamping plate 51 and the second lower clamping plate 52 are tightly fastened to the pipeline along the welding point between the pipeline and the flange. The first groove 514 provided at the bottom of the leak-proof plate 511 is close to the welding point 7 between the flange and the pipeline, so that the gasket 9 presses the welding point 7 between the pipeline and the flange. The corresponding fastening connectors 11 provided on the first upper clamping plate 61 and the second upper clamping plate 62 are inserted into the threaded hole 10, so that the first upper clamping plate 6 1 and the second upper clamping plate 62 are against the support plate 513, and along the pipeline close to the lower clamping plate 5, they are tightly embraced into a circular upper clamping plate 6 to buckle the pipeline, and then the fastening nut 8 on the upper clamping plate 6 is tightened toward the direction of the lower clamping plate 5, and the fastening nut 8 passes through the upper clamping plate 6 and presses against the surface of the support plate 513, so that the leak-proof plate 511 connected to the support plate 513 is squeezed toward the welding place between the pipeline and the flange, and the gasket 9 arranged in the first groove 514 at the bottom of the leak-proof plate 511 is forced to squeeze the welding place between the flange and the pipeline, and the gasket 9 is forced to stop leakage, and then the fastening connector 11 is tightened in the threaded hole 10 to complete the installation.

[0023] The pipeline flange leak-stopping device can be conveniently used at the place where leakage occurs due to various reasons at the welding point between the pipeline and the flange, and plays a role of temporary leak-stopping. It is easy to disassemble and does not require shutdown for maintenance, which facilitates production and prevents safety accidents caused by leakage.

[0024] To sum up, the pipeline flange leak-stopping device has a simple structure, is easy to disassemble, and can be installed when used. It is connected by contacting the lower clamp plate with the leaking position of the pipeline and flange welding. The gasket in the groove of the lower clamp plate is squeezed by the upper clamp plate to block the leak. The gasket on the inner arc surface of the lower clamp plate prevents the blocked liquid from leaking out, ensuring that the leakage at the pipeline and flange welding point is blocked to prevent the leakage from bubbling out due to the high pressure in the pipe, causing safety accidents and affecting normal production. The pipeline flange leak-stopping device can block the leakage point at the flange and pipeline welding point without stopping production, thereby playing a role of temporary leak-stopping.

[0025] It should be noted that the above is only a preferred embodiment of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments. Without departing from the spirit or basic features of the utility model, the utility model can be implemented in other specific forms. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A pipeline flange leak-proof device, characterized in that: The pipeline flange leak-proof device comprises a first pipeline (1), a second pipeline (2), a first flange (3), a second flange (4), a lower clamping plate (5), an upper clamping plate (6), a fastening nut (8), a gasket (9), a threaded hole (10) and a fastening connector (11); the first pipeline (1) and the first flange (3) are welded together; the second pipeline (2) and the second flange (4) are welded together; the lower clamping plate (5) comprises two first lower clamping plates (51) and a second lower clamping plate (52) of the same structure; the first lower clamping plate (51) and the second lower clamping plate (52) are welded together; The clamping plate comprises a leak-proof plate (511), a connecting piece (512), a support plate (513), a first groove (514) and a second groove (515); the leak-proof plate (511) and the support plate (513) are semicircular rings in the shape of an arc; the connecting piece (512) is in the shape of an arc; the connecting piece (512) connects the leak-proof plate (511) and the support plate (513) into a whole; the bottom of the leak-proof plate (511) is provided with a first groove (514); the inner arc surface of the leak-proof plate (511) is provided with a second groove (515); 15), the gasket (9) is built into the first groove (514) and the second groove (515), one end of the first lower clamping plate (51) and the second lower clamping plate (52) are respectively provided with a threaded hole (10), the fastening member (11) is inserted into the threaded hole (10) to clamp the first lower clamping plate (51) and the second lower clamping plate (52) into a circular clamping plate, the upper clamping plate (6) includes two first upper clamping plates (61) and the second upper clamping plates (62) with the same structure, the first upper clamping plate (61) and the second upper clamping plate (62) ) is an arc-shaped semicircular ring, one end of the first upper clamping plate (61) and the second upper clamping plate (62) are respectively provided with a threaded hole (10), the fastening connection piece (11) is inserted into the threaded hole (10) to clamp the first upper clamping plate (61) and the second upper clamping plate (62) into a circular clamping plate, the fastening nut (8) is arranged on the upper clamping plate (6), the first flange (3) and the second flange (4) are connected, the leak-proof plate (511) is close to the flange welding point (7), and the upper clamping plate (6) is close to the support plate (513).

2. The pipeline flange leak-proof device according to claim 1, characterized in that: The material of the gasket (9) is any one of polytetrafluoroethylene, polypropylene, polyvinyl chloride, and polyethylene.

3. The pipeline flange leak-proof device according to claim 2, characterized in that: The radius of the leak-stopping plate (511) is smaller than the radius of the supporting plate (513), and the radius of the supporting plate (513) is equal to the radius of the upper clamping plate (6).

4. The pipeline flange leak-proof device according to claim 2, characterized in that: The radius of the leak-stopping plate (511) is equal to the radius of the supporting plate (513), and the radius of the supporting plate (513) is equal to the radius of the upper clamping plate (6).

Images