Flange leaking stoppage clamp

Abstract

The utility model belongs to the technical field of pipeline repair, and discloses a flange leaking stoppage clamp which comprises a glue injection ring set and a fastening assembly, the glue injection ring set comprises two glue injection blocks which are spliced with each other, and the glue injection blocks cover the outer sides of a flange plate and a blind flange and are used for sealing a gap between the flange plate and the blind flange. The fastening assembly comprises a first clamping plate and a second clamping plate, the first clamping plate is arranged on the side, away from the flange blind plate, of the flange plate, the second clamping plate is arranged on the side, away from the flange plate, of the flange blind plate, and the first clamping plate is connected with the second clamping plate. Sealing between the glue injection block and the flange plate and between the glue injection block and the blind flange plate is achieved by injecting a sealing material into the sealing grooves, sealant overflow is avoided, the sealing performance is good, connection between the flange plate and the blind flange plate is reinforced by connecting the first clamping plate and the second clamping plate, the connection strength is improved, and the service life of the flange plate is prolonged. Bolt breakage caused by too large pressure is avoided, safety is high, and the structure is reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline repair, in particular to a flange leak plugging clamp. Background Art

[0002] In a pipeline system, a flange is usually used to connect two pipelines, and a flange blind plate connected to the flange is provided at the end of the pipeline to seal the end of the pipeline. In order to avoid leakage at the pipeline joint, a sealing gasket is usually provided on the flange to achieve sealing at the pipeline joint.

[0003] However, with long-term use, the gasket may be damaged and fail due to various external factors, thus causing leakage. The traditional flange leakage repair process is to design and process the corresponding flange fixture with injection holes based on the on-site working condition survey data, install it on the outside of the leaking flange and inject glue to maintain the internal and external pressure balance to achieve sealing repair.

[0004] During the repair process, due to limited space, as the sealant is injected, internal pressure will be generated, which makes it easy for the sealant to overflow from between the flange clamp and the flange, resulting in poor sealing effect. When repairing the leakage between the flange and the flange blind plate, as the internal pressure increases, the pressure will be transmitted to the bolts used to achieve the flange connection, causing the bolts to be stressed. When the force is too large, there is a risk of bolt breakage, which is highly dangerous and has low structural reliability.

[0005] Therefore, a flange leak plugging fixture is urgently needed to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a flange leak plugging fixture with good sealing performance, high safety and reliable structure.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] A flange leak plugging fixture is provided, which is used to repair the leakage point between the flange plate and the flange blind plate, and the flange leak plugging fixture comprises:

[0009] A glue injection ring group, the glue injection ring group includes two glue injection blocks spliced ​​to each other, the two glue injection blocks spliced ​​to each other are covered on the outside of the flange and the flange blind plate, and are used to close the gap between the flange and the flange blind plate, and each of the glue injection blocks is provided with a sealing groove corresponding to the flange and the flange blind plate and a glue injection hole for injecting sealant into the gap between the flange and the flange blind plate;

[0010] The fastening assembly comprises a first clamping plate and a second clamping plate, wherein the first clamping plate is arranged on a side of the flange away from the flange blind plate, and the second clamping plate is arranged on a side of the flange blind plate away from the flange, and the first clamping plate and the second clamping plate are detachably connected.

[0011] Optionally, the thickness of the flange plate and the flange blind plate are both greater than the groove width of the sealing groove.

[0012] Optionally, the first clamping plate and the second clamping plate are both provided with a through hole and an avoidance groove, the avoidance groove is provided on the hole wall of the through hole, the through hole is used for the pipeline to extend, and the avoidance groove is used to avoid the bolts connecting the flange plate and the flange blind plate.

[0013] Optionally, the first clamping plate includes two clamping blocks, which are symmetrically distributed on both sides of the pipe connected to the flange, each clamping block is provided with a semicircular groove, and the two clamping blocks are connected to each other to form the through hole.

[0014] Optionally, the fastening assembly further comprises a connecting screw and a connecting nut, wherein the connecting screw passes through the two clamping blocks, and the connecting nut is connected to both ends of the connecting screw extending out of the clamping blocks and abuts against the sides of the two clamping blocks facing away from each other.

[0015] Optionally, the clamping block comprises a clamping body and a clamping connection portion, wherein the clamping connection portion is fixedly arranged on two sides of the clamping body, the clamping body is provided with the semicircular groove, and the clamping connection portion is provided with a first through hole for the connecting screw to pass through.

[0016] Optionally, the fastening assembly also includes a clamping screw and a clamping nut, the clamping screw passes through the first clamp plate and the second clamp plate, the clamping nut is connected to both ends of the clamping screw extending out of the first clamp plate and the second clamp plate, and abuts against the side of the first clamp plate and the second clamp plate facing away from each other.

[0017] Optionally, the glue injection ring group also includes a glue injection screw and a glue injection nut, the glue injection screw passes through the two glue injection blocks, the glue injection nut is connected to the two ends of the glue injection screw extending out of the glue injection block, and abuts against the sides of the two glue injection blocks facing away from each other.

[0018] Optionally, the glue injection block includes a glue injection body and a glue injection connection part, the glue injection connection part is fixed on both sides of the glue injection body, the glue injection body is provided with the glue injection hole and the sealing groove, and the glue injection connection part is provided with a second through hole for the glue injection screw to pass through.

[0019] Optionally, the glue injection ring group also includes a glue injection joint, and the glue injection joint is connected to the glue injection hole.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides a flange leak plugging clamp, which opens a sealing groove corresponding to the flange and the flange blind plate on a glue injection block covered on the outer sides of the flange and the flange blind plate, so that sealing between the glue injection block and the flange and between the glue injection block and the flange blind plate is achieved by injecting sealing material into the sealing groove, thereby avoiding overflow of the sealant and achieving good sealing performance, and a first clamping plate is arranged on the side of the flange away from the flange blind plate, and a second clamping plate is arranged on the side of the flange blind plate away from the flange, and the first clamping plate and the second clamping plate are connected to reinforce the connection between the flange and the flange blind plate, thereby improving the connection strength, avoiding the breakage of bolts connecting the flange and the flange blind plate due to excessive internal pressure during glue injection, and having high safety and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a connection diagram of the flange leak plugging fixture provided by the utility model when it is working;

[0023] Figure 2 It is a schematic diagram of the connection between the flange plate and the flange blind plate that are sealed by the flange leak plugging fixture of the utility model;

[0024] Figure 3 It is a three-dimensional view of the flange leak plugging fixture provided by the utility model;

[0025] Figure 4 It is a structural schematic diagram of a glue injection ring group in a flange leak plugging fixture provided by the utility model;

[0026] Figure 5 The utility model is a schematic diagram of the structure of the fastening components in the flange leak plugging fixture.

[0027] In the figure:

[0028] 100, flange; 200, blind flange; 300, pipe;

[0029] 1. Glue injection ring assembly; 11. Glue injection block; 111. Sealing groove; 112. Glue injection hole; 113. Insertion protrusion; 12. Glue injection screw; 13. Glue injection nut; 14. Glue injection joint;

[0030] 2. Fastening assembly; 21. First clamping plate; 211. Through hole; 212. Avoidance groove; 213. Clamping block; 22. Second clamping plate; 23. Connecting screw; 24. Connecting nut; 25. Clamping screw; 26. Clamping nut. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] In a pipeline system, a flange is usually used to connect two pipelines, and a flange blind plate connected to the flange is provided at the end of the pipeline to seal the end of the pipeline. In order to avoid leakage at the pipeline joint, a sealing gasket is usually provided on the flange to achieve sealing at the pipeline joint.

[0036] However, with long-term use, the gasket may be damaged and fail due to various external factors, thus causing leakage. The traditional flange leakage repair process is to design and process the corresponding flange fixture with injection holes based on the on-site working condition survey data, install it on the outside of the leaking flange and inject glue to maintain the internal and external pressure balance to achieve sealing repair.

[0037] During the repair process, due to limited space, as the sealant is injected, internal pressure will be generated, which makes it easy for the sealant to overflow from between the flange clamp and the flange, resulting in poor sealing effect. When repairing the leakage between the flange and the flange blind plate, as the internal pressure increases, the pressure will be transmitted to the bolts used to achieve the flange connection, causing the bolts to be stressed. When the force is too large, there is a risk of bolt breakage, which is highly dangerous and has low structural reliability.

[0038] Therefore, in order to avoid sealant overflow, improve sealing, and avoid bolts from being broken due to excessive force during injection, and to improve the safety and reliability of the overall structure, this embodiment provides a flange leak plugging fixture, which is used to repair the leakage point between the flange plate and the flange blind plate.

[0039] like Figures 1 to 5 As shown, the flange leak-proof fixture includes a glue injection ring group 1 and a fastening assembly 2, the glue injection ring group 1 includes two glue injection blocks 11 spliced ​​to each other, the two glue injection blocks 11 spliced ​​to each other are coated on the outside of the flange 100 and the flange blind plate 200, and are used to close the gap between the flange 100 and the flange blind plate 200, each of the glue injection blocks 11 is provided with a sealing groove 111 corresponding to the flange 100 and the flange blind plate 200 and a glue injection hole 112 for injecting sealant into the gap between the flange 100 and the flange blind plate 200, the fastening assembly 2 includes a first clamping plate 21 and a second clamping plate 22, the first clamping plate 21 is arranged on the side of the flange 100 away from the flange blind plate 200, the second clamping plate 22 is arranged on the side of the flange blind plate 200 away from the flange 100, and the first clamping plate 21 and the second clamping plate 22 are detachably connected.

[0040] By opening a sealing groove 111 corresponding to the flange 100 and the flange blind plate 200 on the injection block 11 covering the outer side of the flange 100 and the flange blind plate 200, the sealing material is injected into the sealing groove 111 to achieve sealing between the injection block 11 and the flange 100 and between the injection block 11 and the flange blind plate 200, thereby avoiding overflow of the sealant and achieving good sealing performance. In addition, a first clamping plate 21 is arranged on the side of the flange 100 away from the flange blind plate 200, and a second clamping plate 22 is arranged on the side of the flange blind plate 200 away from the flange 100. By connecting the first clamping plate 21 and the second clamping plate 22, the connection between the flange 100 and the flange blind plate 200 is reinforced to improve the connection strength, thereby avoiding the breakage of the bolts connecting the flange 100 and the flange blind plate 200 due to excessive internal pressure during injection of the glue, thereby achieving high safety and reliable structure.

[0041] In this embodiment, each injection block 11 is provided with a plurality of injection holes 112 arranged at intervals, so as to realize injection in multiple directions at the same time, thereby improving the injection speed and uniformity of the injection. In addition, since two sealing grooves 111 are provided on the injection block 11, a plug-in protrusion 113 for inserting between the flange 100 and the blind flange plate 200 is formed between the two sealing grooves 111, and the injection hole 112 is provided on the area of ​​the injection block 11 where the plug-in protrusion 113 is provided, so as to utilize the extension of the plug-in protrusion 113 to directly inject the sealant into the deep gap between the flange 100 and the blind flange plate 200 through the injection hole 112.

[0042] Optionally, the thickness of the flange 100 and the blind flange 200 are both greater than the groove width of the sealing groove 111. Since there is a position error between the sealing groove 111 and the flange 100 or the blind flange 200 during assembly, by making the thickness of the flange 100 and the blind flange 200 greater than the groove width of the sealing groove 111, the flange 100 and the blind flange 200 are used to enclose the sealing groove 111 into a closed chamber, thereby avoiding the position error between the sealing groove 111 and the flange 100 and the blind flange 200 after assembly, and ensuring the sealing performance.

[0043] Alternatively, if Figure 1 , Figure 2 , Figure 5 As shown, the first clamping plate 21 and the second clamping plate 22 are both provided with a through hole 211 and an avoidance groove 212, and the avoidance groove 212 is provided on the hole wall of the through hole 211, and the through hole 211 is used for the pipe 300 to extend, and the avoidance groove 212 is used to avoid the bolts connecting the flange 100 and the blind flange 200. By providing the through hole 211 and the avoidance groove 212 on the first clamping plate 21 and the second clamping plate 22, it is convenient for the pipe 300 to extend and avoid the bolts connecting the flange 100 and the blind flange 200, so that the first clamping plate 21 and the flange 100, and the second clamping plate 22 and the blind flange 200 are more closely fitted.

[0044] Alternatively, if Figure 5 As shown, the first clamping plate 21 includes two clamping blocks 213, which are symmetrically distributed on both sides of the pipe 300 connected to the flange 100, and each clamping block 213 is provided with a semicircular groove, and the two clamping blocks 213 are connected to each other to form a through hole 211. Since the pipe 300 extends from the side of the flange 100 away from the blind flange plate 200, the first clamping plate 21 is formed by two clamping blocks 213 connected to each other, so that the first clamping plate 21 is convenient for disassembly and assembly.

[0045] Alternatively, if Figure 1 , Figure 2 , Figure 5As shown, the fastening assembly 2 further includes a connecting screw 23 and a connecting nut 24. The connecting screw 23 passes through the two clamping blocks 213, and the connecting nut 24 is connected to the two ends of the connecting screw 23 extending out of the clamping blocks 213, and abuts against the sides of the two clamping blocks 213 that are away from each other. By making the connecting screw 23 pass through the two clamping blocks 213, and the connecting nut 24 is connected to the two ends of the connecting screw 23 extending out of the clamping blocks 213, and abuts against the sides of the two clamping blocks 213 that are away from each other, it is convenient to split and connect the two clamping blocks 213, thereby improving the convenience of operation.

[0046] Optionally, the clamping block 213 includes a clamping body and a clamping connection part, the clamping connection part is fixedly arranged on both sides of the clamping body, the clamping body is provided with a semicircular groove, and the clamping connection part is provided with a first through hole for the connecting screw 23 to pass through. By arranging the clamping connection part on both sides of the clamping body, it is convenient to connect the screw 23 to realize the connection between the two clamping blocks 213.

[0047] Alternatively, if Figure 1 , Figure 2 , Figure 5 As shown, the fastening assembly 2 also includes a clamping screw 25 and a clamping nut 26. The clamping screw 25 passes through the first clamping plate 21 and the second clamping plate 22, and the clamping nut 26 is connected to the two ends of the clamping screw 25 extending from the first clamping plate 21 and the second clamping plate 22, and abuts against the side of the first clamping plate 21 and the second clamping plate 22 that are away from each other. By passing the clamping screw 25 through the first clamping plate 21 and the second clamping plate 22, and the clamping nut 26 is connected to the two ends of the clamping screw 25 extending from the first clamping plate 21 and the second clamping plate 22, and abuts against the side of the first clamping plate 21 and the second clamping plate 22 that are away from each other, it is only necessary to screw the clamping nut 26 and adjust the distance between the two clamping nuts 26 located on both sides of the first clamping plate 21 and the second clamping plate 22 to achieve the adjustment of the clamping force between the first clamping plate 21 and the second clamping plate 22. In this embodiment, the connection between the first clamping plate 21 and the second clamping plate 22 is achieved by four groups of clamping screws 25 and clamping nuts 26.

[0048] Alternatively, if Figure 1 , Figure 2 , Figure 4 As shown, the glue injection ring assembly 1 also includes a glue injection screw 12 and a glue injection nut 13. The glue injection screw 12 passes through the two glue injection blocks 11, and the glue injection nut 13 is connected to the two ends of the glue injection screw 12 extending from the glue injection block 11, and abuts against the sides of the two glue injection blocks 11 that are away from each other. By passing the glue injection screw 12 through the two glue injection blocks 11, and the glue injection nut 13 is connected to the two ends of the glue injection screw 12 extending from the glue injection block 11, and abuts against the sides of the two glue injection blocks 11 that are away from each other, it is convenient to split and connect the two glue injection blocks 11, thereby improving the convenience of operation.

[0049] Optionally, the glue injection block 11 includes a glue injection body and a glue injection connection part, the glue injection connection part is fixedly arranged on both sides of the glue injection body, the glue injection body is provided with a glue injection hole 112 and a sealing groove 111, and the glue injection connection part is provided with a second through hole for the glue injection screw 12 to pass through. By arranging the glue injection connection part on both sides of the glue injection body, the glue injection screw 12 realizes the connection between the two clamping blocks 213.

[0050] Alternatively, if Figure 1 , Figure 2 , Figure 4 As shown, the glue injection ring assembly 1 further includes a glue injection joint 14, and the glue injection joint 14 is connected to the glue injection hole 112. By arranging the glue injection joint 14 on the glue injection hole 112, it is convenient for the glue injection block 11 to be connected to the glue injection equipment.

[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A flange plugging fixture, which is used to repair a leak between a flange plate (100) and a flange blind plate (200), and is characterized in that: The flange plugging fixture comprises: A glue injection ring group (1), the glue injection ring group (1) comprising two glue injection blocks (11) spliced ​​to each other, the two glue injection blocks (11) spliced ​​to each other covering the outer sides of the flange (100) and the flange blind plate (200), and used to seal the gap between the flange (100) and the flange blind plate (200), each of the glue injection blocks (11) being provided with a sealing groove (111) corresponding to the flange (100) and the flange blind plate (200) and a glue injection hole (112) for injecting sealant into the gap between the flange (100) and the flange blind plate (200); A fastening assembly (2), the fastening assembly (2) comprising a first clamping plate (21) and a second clamping plate (22), the first clamping plate (21) being arranged on a side of the flange (100) away from the flange blind plate (200), the second clamping plate (22) being arranged on a side of the flange blind plate (200) away from the flange (100), the first clamping plate (21) and the second clamping plate (22) being detachably connected.

2. The flange leak plugging fixture according to claim 1, characterized in that: The thickness of the flange plate (100) and the flange blind plate (200) are both greater than the groove width of the sealing groove (111).

3. The flange leak plugging fixture according to claim 1, characterized in that: The first clamping plate (21) and the second clamping plate (22) are both provided with a through hole (211) and an avoidance groove (212), wherein the avoidance groove (212) is provided on the hole wall of the through hole (211), the through hole (211) is used for the pipeline (300) to extend, and the avoidance groove (212) is used for avoiding bolts connecting the flange plate (100) and the flange blind plate (200).

4. The flange leak plugging fixture according to claim 3, characterized in that: The first clamping plate (21) includes two clamping blocks (213), and the two clamping blocks (213) are symmetrically distributed on both sides of the pipe (300) connected to the flange (100), and each of the clamping blocks (213) is provided with a semicircular groove, and the two clamping blocks (213) are connected to each other to form the through hole (211).

5. The flange leak plugging fixture according to claim 4, characterized in that: The fastening assembly (2) further comprises a connecting screw (23) and a connecting nut (24), wherein the connecting screw (23) passes through the two clamping blocks (213), and the connecting nut (24) is connected to the two ends of the connecting screw (23) extending out of the clamping blocks (213), and abuts against the sides of the two clamping blocks (213) facing away from each other.

6. The flange leak plugging fixture according to claim 5, characterized in that: The clamping block (213) comprises a clamping body and a clamping connection part, wherein the clamping connection part is fixedly arranged on two sides of the clamping body, the clamping body is provided with the semicircular groove, and the clamping connection part is provided with a first through hole for the connecting screw (23) to pass through.

7. The flange leak plugging fixture according to claim 1, characterized in that: The fastening assembly (2) also includes a clamping screw (25) and a clamping nut (26), wherein the clamping screw (25) passes through the first clamping plate (21) and the second clamping plate (22), and the clamping nut (26) is connected to the two ends of the clamping screw (25) extending out of the first clamping plate (21) and the second clamping plate (22), and abuts against the side of the first clamping plate (21) and the second clamping plate (22) facing away from each other.

8. The flange leak plugging fixture according to claim 1, characterized in that: The glue injection ring assembly (1) further comprises a glue injection screw (12) and a glue injection nut (13); the glue injection screw (12) passes through the two glue injection blocks (11); the glue injection nut (13) is connected to the two ends of the glue injection screw (12) extending out of the glue injection blocks (11) and abuts against the sides of the two glue injection blocks (11) facing away from each other.

9. The flange leak plugging fixture according to claim 8, characterized in that: The glue injection block (11) comprises a glue injection body and a glue injection connection part, the glue injection connection part is fixedly arranged on both sides of the glue injection body, the glue injection body is provided with the glue injection hole (112) and the sealing groove (111), and the glue injection connection part is provided with a second through hole for the glue injection screw (12) to pass through.

10. The flange leak plugging fixture according to claim 1, characterized in that: The glue injection ring assembly (1) further comprises a glue injection joint (14), wherein the glue injection joint (14) is connected to the glue injection hole (112).

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