Elbow under-pressure leaking stoppage clamp

Abstract

The utility model relates to the technical field of pipeline maintenance, in particular to an elbow pressure leaking stoppage clamp which comprises a clamp body, an elbow and a sealing patch, the clamp body is detachably and fixedly mounted on the outer side of the elbow, a glue injection cavity is formed between the inner side of the clamp body and the outer side of the elbow, and the sealing patch is fixedly mounted on the outer side of the elbow corresponding to a leaking point. The sealing device is reasonable and compact in structure and convenient to use, through the arrangement of the sealing patch, preliminary physical blocking is formed on a leakage point before glue injection, continuous leakage of a high-pressure medium in the glue injection process is prevented, direct contact between sealing glue and pipeline metal is effectively isolated, and glue is prevented from permeating into a pipeline under high pressure to pollute a conveying medium; by arranging the sealant injection hole and the exhaust hole, the sealant injection cavity can be uniformly filled with sealant from bottom to top in the injection process, residual air in the sealant injection cavity overflows from the exhaust hole, an air bag is avoided, and the sealant injection device has the advantages of being stable, reliable and efficient.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline maintenance technical field is a bend pressure plugging fixture. BACKGROUND

[0002] In industrial pipeline systems, elbows as key components to change the direction of fluid, their irregular shape brings significant challenges to plugging work. The current plugging fixture for elbows generally has the problems of complex design and overall bulkiness, which not only leads to time-consuming and laborious processing and manufacturing, but also makes on-site installation operation extremely inconvenient, directly prolongs the time window of pipeline repair and increases maintenance cost. What is particularly severe is that the leakage points at the elbow position have the trend of continuous expansion and increase due to long-term fluid erosion or cavitation, and often still need to be supplemented with sealing glue after the initial plugging. Such repeated operation seriously threatens the long-term sealing performance of the fixture and easily causes secondary leakage accidents. At the same time, during the plugging process, there is a risk of continuous penetration of sealing glue into the pipeline interior, causing pollution to the conveying medium and affecting product quality or process safety. In addition, during actual glue injection operation, due to the complex and variable flow field distribution inside the fixture, it is easy to form air pockets that are difficult to discharge, significantly weakening the plugging effect and greatly reducing the sealing reliability.

[0003] The Chinese patent document with publication number CN222616337U discloses a pressure pipeline plugging sealing elbow clamp, aiming to solve the problem of elbow plugging. The sealing clamp adopts a split structure design, separately processes the top arc plate and the bottom arc plate, and combines them into a whole through bolt compression, which can theoretically achieve the task of plugging the leakage point of the elbow. However, this elbow fixture scheme still has obvious deficiencies: first, its structure design cannot effectively prevent sealing glue from entering the pipeline interior under pressure, and cannot avoid the risk of medium pollution; second, during the glue injection process, its internal structure also cannot avoid the generation of air pockets, affecting the filling density of the sealing glue; third, this scheme has high processing precision requirements and long design and manufacturing period, which seriously restricts the progress of rapid response and efficient disposal in emergency rescue scenarios.

[0004] Therefore, in view of the key problems of low processing and manufacturing efficiency, cumbersome on-site installation operation, unreliable long-term sealing performance, medium pollution, and air pocket hazards of existing elbow plugging fixtures, it is urgent to develop a new type of elbow plugging fixture. The fixture should have the core characteristics of fast processing and manufacturing, fast and convenient installation, excellent sealing performance, and high operational safety. The research and development and application of such efficient and reliable plugging fixtures have important practical significance and engineering value for ensuring the safe and stable operation of industrial pipeline systems, reducing maintenance cost of sudden leakage events, and improving emergency repair efficiency. SUMMARY

[0005] The utility model provides a bend pressure leak stoppage clamp, overcome the above prior art's insufficient, it can effectively solve the existing bend leak stoppage clamp exists the problem of medium pollution and air bag hidden danger.

[0006] The technical scheme of the utility model is realized through the following measures: a bend pressure leak stoppage clamp comprises a clamp body, a bend and a sealing patch, the clamp body is detachably fixedly installed on the outer side of the bend, a glue injection cavity is formed between the inner side of the clamp body and the outer side of the bend, the outer side of the bend corresponding to the leak point position is fixedly installed with the sealing patch, the lower side of the clamp body is provided with a glue injection hole which can communicate with the glue injection cavity, and the upper side of the clamp body is provided with an exhaust hole which can communicate with the glue injection cavity.

[0007] The following is the further optimization or / and improvement of the above-mentioned utility model technical scheme:

[0008] The clamp body can comprise a front side plate, a rear side plate, an upper arc-shaped plate, a lower arc-shaped plate, a left sealing plate and a lower sealing plate, the outer side of the left part of the bend is provided with the left sealing plate, the outer side of the lower part of the bend is provided with the lower sealing plate, the rear side plate is arranged at the rear of the bend corresponding to the position between the left sealing plate and the lower sealing plate, the upper arc-shaped plate is fixedly installed on the front side of the rear side plate corresponding to the upper position of the bend, the lower arc-shaped plate is fixedly installed on the front side of the rear side plate corresponding to the lower position of the bend, and the front side plate can be detachably fixedly installed with the rear side plate in front of the bend; the left side of the front side plate, the rear side plate, the upper arc-shaped plate and the lower arc-shaped plate is detachably fixedly installed with the right side of the left sealing plate, and the lower side of the front side plate, the rear side plate, the upper arc-shaped plate and the lower arc-shaped plate is detachably fixedly installed with the upper side of the lower sealing plate.

[0009] The clamp body can further comprise a sealing ring, the left side of the left sealing plate is provided with a first sealing hole, the first sealing hole is provided with a first sealing ring groove, the lower side of the lower sealing plate is provided with a second sealing hole, the second sealing hole is provided with a second sealing ring groove, and the first sealing ring groove and the second sealing ring groove are provided with the sealing ring; the left sealing plate comprises a first sealing plate and a second sealing plate which can be detachably fixedly installed together, and the lower sealing plate comprises a third sealing plate and a fourth sealing plate which can be detachably fixedly installed together.

[0010] The aforementioned left sealing plate may further include a first protrusion, a second protrusion, and a first fixing bolt. The upper rear side of the first sealing plate has a vertically penetrating first slot at its center, and the lower rear side of the first sealing plate has a vertically penetrating second slot at its center. The upper front side of the second sealing plate has a first protrusion located within the first slot at its center, and the lower front side of the second sealing plate has a second protrusion located within the second slot at its center. The front center of the first protrusion and the front center of the second protrusion each have a first fixing screw hole. Corresponding to the position of the first fixing screw hole, the front side of the first sealing plate has a front-to-back penetrating first fixing through hole. The first fixing through hole contains a first fixing bolt whose rear end is fixedly installed within the first fixing screw hole via a threaded connection. The lower sealing plate also includes a third protrusion, a fourth protrusion, and a second fixing bolt. The third sealing plate has a third slot that runs through the left and right sides in the middle of the rear left side, and a fourth slot that runs through the left and right sides in the middle of the rear right side. The fourth sealing plate has a third protrusion located in the third slot in the middle of the front left side, and a fourth protrusion located in the fourth slot in the middle of the front right side. The third protrusion and the fourth protrusion each have a second fixing screw hole in the middle of the front side. The front side of the third sealing plate corresponding to the position of the second fixing screw hole has a second fixing through hole that runs through the front and back. The second fixing through hole has a second fixing bolt that is fixedly installed in the second fixing screw hole by a threaded connection at its rear end.

[0011] The above may also include a first connecting bolt and a fixing block. Fixing blocks are fixedly installed on the upper left side of the upper arc plate, the lower right side of the upper arc plate, the lower left side of the lower arc plate, and the lower left side of the lower arc plate. The first sealing plate, the second sealing plate, the third sealing plate, and the fourth sealing plate are respectively fixedly installed together with the fixing blocks at the corresponding positions by the first connecting bolt.

[0012] The above may also include a second connecting bolt, wherein the first sealing plate is fixedly installed together with the left side of the front side plate by the second connecting bolt, the second sealing plate is fixedly installed together with the left side of the rear side plate by the second connecting bolt, the third sealing plate is fixedly installed together with the lower side of the front side plate by the second connecting bolt, and the fourth sealing plate is fixedly installed together with the lower side of the rear side plate by the second connecting bolt.

[0013] The above may also include third connecting bolts and connecting nuts. The front and rear side plates corresponding to the upper part of the upper arc plate are fixed together by a number of third connecting bolts and connecting nuts, and the front and rear side plates corresponding to the lower part of the lower arc plate are fixed together by a number of third connecting bolts and connecting nuts.

[0014] The above may also include a locking nut and a tightening bolt. The sealing patch is provided with at least one positioning blind hole. The outer side of the clamp body corresponding to each positioning blind hole position is provided with a mounting hole. A locking nut is fixedly installed on the outer side of the clamp body corresponding to the mounting hole position. A tightening bolt with its inner end located in the positioning blind hole is fixedly installed in the locking nut through a threaded connection.

[0015] The injection glue valve and the exhaust valve can be further included, the injection glue valve is installed on the clamp body corresponding to the position of the injection glue hole, and the exhaust valve is installed on the clamp body corresponding to the position of the exhaust hole.

[0016] The utility model discloses rational and compact structure, convenient to use, through setting up seal patch, forms the preliminary physical barrier to the leakage point before injection glue, prevents the high pressure medium in the injection process and continuously leaks outside, and effectively isolates the direct contact of sealant and pipeline metal, avoids the colloid to penetrate into the pipeline interior and pollute the conveying medium under high pressure, through setting up injection hole and exhaust hole, makes sealant even fill injection cavity from bottom to top in the injection process, and makes the air remaining in injection cavity overflow from exhaust hole, avoids the air bag to produce, through setting up the clamp body of detachable fixed installation with elbow outside, realizes quick installation, is applicable to quick rescue operation, has stable, reliable and efficient characteristics. BRIEF DESCRIPTION OF DRAWINGS

[0017] ATTACHMENT Figure 1 It is the front view structure schematic diagram of the embodiment 1 to 9 of the utility model.

[0018] ATTACHMENT Figure 2 It is the structure schematic diagram of the embodiment 1 to 9 of the utility model. Figure 1 It is the three-dimensional structure schematic diagram of middle rear side plate, upper arc plate and lower arc plate.

[0019] ATTACHMENT Figure 3 It is the structure schematic diagram of the embodiment 1 to 9 of the utility model. Figure 1

[0020] ATTACHMENT Figure 4 It is the structure schematic diagram of the embodiment 1 to 9 of the utility model. Figure 3

[0021] ATTACHMENT Figure 5 It is the structure schematic diagram of the embodiment 1 to 9 of the utility model. Figure 1

[0022] ATTACHMENT Figure 6 It is the structure schematic diagram of the embodiment 1 to 9 of the utility model. Figure 1

[0023] ​​​​The codes in the attached diagram are as follows: 1 for elbow, 2 for glue injection cavity, 3 for sealing patch, 4 for glue injection hole, 5 for vent hole, 6 for front side plate, 7 for rear side plate, 8 for upper arc plate, 9 for lower arc plate, 10 for first sealing plate, 11 for second sealing plate, 12 for third sealing plate, 13 for fourth sealing plate, 14 for sealing ring, 15 for second sealing hole, 16 for first protrusion, 17 for first fixing bolt, 18 for third protrusion, 19 for fourth protrusion, 20 for second fixing bolt, 21 for first connecting bolt, 22 for fixing block, 23 for second connecting bolt, 24 for third connecting bolt, 25 for connecting nut, 26 for locking nut, 27 for tightening bolt, 28 for glue injection valve, 29 for vent valve, and 30 for leak point. Detailed Implementation

[0024] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0025] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0026] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0027] Example 1: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, the elbow pressurized leak-sealing fixture includes a fixture body, an elbow 1, and a sealing patch 3. The fixture body is detachably and fixedly installed on the outside of the elbow 1. An injection cavity 2 is formed between the inner side of the fixture body and the outer side of the elbow 1. A sealing patch 3 is fixedly installed on the outer side of the elbow 1 corresponding to the leak point 30. An injection hole 4 that can communicate with the injection cavity 2 is provided on the lower side of the fixture body, and an exhaust hole 5 that can communicate with the injection cavity 2 is provided on the upper side of the fixture body.

[0028] In use, by setting the sealing patch 3, a preliminary physical barrier is formed on the leakage point before glue injection, preventing continuous leakage of high-pressure medium during glue injection, and effectively isolating the direct contact between the sealing glue and the pipeline metal, avoiding the penetration of the glue into the pipeline under high pressure to pollute the transported medium; by setting the glue injection hole 4 and the exhaust hole 5, the sealing glue can uniformly fill the glue injection cavity 2 from bottom to top during injection, and the residual air in the glue injection cavity 2 can overflow from the exhaust hole 5, avoiding the formation of airbags; by setting the clamp body capable of being detachably fixed and installed outside the elbow 1, quick installation is realized, which is suitable for quick rescue operation. The utility model effectively solves the key problems of the existing elbow 1 leak stoppage clamp, such as low manufacturing efficiency, complicated on-site installation operation, unreliable long-term sealing performance, medium pollution and airbag hazards.

[0029] In the pressure pipeline leak stoppage operation, the sealing patch 3 is fixed at the leakage point 30 of the elbow 1 in advance, which serves as a flexible transition layer and can closely fit the irregular curved surface of the elbow 1, effectively filling the surface micro concave and leakage gap, providing a smooth and continuous base surface for subsequent glue injection sealing, and significantly improving the bonding density of the sealing glue and the elbow 1 body; at the same time, the sealing patch 3 itself has excellent pressure resistance and corrosion resistance, which can form a preliminary physical barrier on the leakage point before glue injection, preventing continuous leakage of high-pressure medium during glue injection, and creating a safe and stable working environment for glue injection operation. In addition, the sealing patch 3 can also isolate the direct contact between the sealing glue and the pipeline metal, avoid the penetration of the glue into the pipeline under high pressure to pollute the transported medium, and reduce the risk of sealing failure caused by glue solidification shrinkage or thermal expansion and contraction, thereby fundamentally enhancing the long-term reliability and safety of the leak stoppage structure. According to the requirements, the sealing patch 3 and the elbow 1 can be fixed by vulcanization treatment, which makes the rubber sealing material and the metal surface of the elbow 1 chemically cross-link through high temperature and high pressure, forming a firm combination at the molecular level, completely eliminating the micro gaps that may exist in traditional mechanical fixation, and ensuring that the sealing interface still maintains a zero leakage state under extreme working conditions. This integrated structure can resist the impact, vibration and temperature fluctuations of the high-pressure medium in the pipeline for a long time, avoiding the risk of secondary leakage caused by loosening or displacement of the sealing patch 3; at the same time, the elastic sealing layer formed by vulcanization has excellent corrosion resistance and anti-aging performance, which can effectively isolate the direct contact between the transported medium and the metal elbow 1, prevent the electrochemical corrosion from aggravating the leakage point expansion, and prevent the sealing glue from penetrating into the pipeline during glue injection to pollute the medium, thereby fundamentally improving the long-term reliability and operational safety of the leak stoppage structure.

[0030] When performing sealant injection within the injection cavity 2 formed between the fixture body and the elbow 1, the injection hole 4 is positioned on the lower side of the fixture body, and the vent hole 5 is positioned on the upper side. This fully utilizes gravity, allowing the sealant to evenly fill the entire space of the injection cavity 2 from bottom to top during injection, effectively avoiding uneven filling caused by obstructed flow or local accumulation of the sealant. Simultaneously, the vent hole 5 on the upper side provides a natural escape channel for residual air within the cavity, ensuring that gas is completely expelled during the rising of the sealant, fundamentally eliminating the possibility of air pocket retention. This design not only significantly improves the adhesion and tightness between the sealant and the surface of the elbow 1, ensuring the integrity and continuity of the leak-sealing structure, but also greatly reduces the risk of localized sealing failure caused by the presence of air pockets, thereby ensuring high reliability and long-term stability of the leak-sealing effect.

[0031] The fixture body is quickly installed on the outside of elbow 1 using a detachable fixing method, which has significant multi-dimensional technical advantages: (1) In terms of rapid emergency rescue, the detachable design does not require welding or special tools. On-site operators can directly assemble modular components using standardized connectors (such as bolts), which greatly shortens the emergency response time and effectively controls the expansion of leakage accidents; (2) From the perspective of rapid processing and manufacturing, this method adopts a split prefabricated structure, each component can be processed independently and has strong versatility, avoiding the complex process of overall casting, significantly shortening the production cycle and meeting the timeliness requirements of emergency rescue.

[0032] The above-mentioned elbow pressure sealing fixture can be further optimized and / or improved according to actual needs:

[0033] Example 2: As shown in the attached document Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, the fixture body includes a front side plate 6, a rear side plate 7, an upper arc plate 8, a lower arc plate 9, a left sealing plate, and a lower sealing plate. A left sealing plate is provided on the outer left side of the elbow 1, and a lower sealing plate is provided on the outer lower side of the elbow 1. A rear side plate 7 is provided behind the elbow 1 at the position between the left sealing plate and the lower sealing plate. An upper arc plate 8 is fixedly installed on the front side of the rear side plate 7 at the position above the elbow 1, and a lower arc plate 9 is fixedly installed on the front side of the rear side plate 7 at the position below the elbow 1. A front side plate 6 is provided in front of the elbow 1 and can be detachably and fixedly installed together with the rear side plate 7. The left sides of the front side plate 6, rear side plate 7, upper arc plate 8, and lower arc plate 9 are detachably and fixedly installed together with the right side of the left sealing plate, respectively. The lower sides of the front side plate 6, rear side plate 7, upper arc plate 8, and lower arc plate 9 are detachably and fixedly installed together with the upper side of the lower sealing plate, respectively. During use, this design facilitates the quick installation of the clamp body onto the outside of elbow 1.

[0034] Example 3: As shown in the attached document Figure 1 , 2, 3, 4, 5, 6, further comprising a sealing ring 14, the left sealing plate is centrally provided with a first sealing hole, the first sealing hole is provided with a first sealing ring groove, the lower sealing plate is centrally provided with a second sealing hole 15, the second sealing hole 15 is provided with a second sealing ring groove, and the first sealing ring groove and the second sealing ring groove are both provided with the sealing ring 14; the left sealing plate comprises a first sealing plate 10 and a second sealing plate 11 which are detachably fixed together, and the lower sealing plate comprises a third sealing plate 12 and a fourth sealing plate 13 which are detachably fixed together. In the use process, the left sealing plate and the lower sealing plate are set in a split manner, so that the left sealing plate and the lower sealing plate can be quickly clamped on the outer side of the elbow 1 end, which significantly improves the flexibility and convenience of installation, so that it can adapt to the complex profile of the irregular end face of the elbow 1, and through the combination mode of respectively fitting the two sides of the elbow 1, the problem that the integral sealing plate is difficult to fit into or fit the arc surface of the elbow 1 is effectively solved. At the same time, by setting the sealing ring 14, a continuous and elastic sealing barrier can be formed, which can not only eliminate the inherent joint gap of the split structure of the left sealing plate and the lower sealing plate, prevent the sealing glue from leaking from the end during the glue injection process, but also compensate for the possible small concave-convex or unevenness of the surface of the elbow 1, and ensure that the sealing surface is tightly fitted with the end of the elbow 1.

[0035] Example 4: as in the preceding examples Figure 1 , 2, 3, 4, 5, 6, the left sealing plate further comprises a first protrusion 16, a second protrusion and a first fixing bolt 17, the upper rear middle part of the first sealing plate 10 is provided with a first slot penetrating up and down, the lower rear middle part of the first sealing plate 10 is provided with a second slot penetrating up and down, the upper front middle part of the second sealing plate 11 is provided with a first protrusion 16 located in the first slot, the lower front middle part of the second sealing plate 11 is provided with a second protrusion located in the second slot, the front middle part of the first protrusion 16 and the front middle part of the second protrusion are respectively provided with a first fixing screw hole, the front side of the first sealing plate 10 corresponding to the position of the first fixing screw hole is provided with a first fixing through hole penetrating front and back, the first fixing through hole is provided with a first fixing bolt 17 with a rear end fixedly installed in the first fixing screw hole through threaded connection; the lower sealing plate further comprises a third protrusion 18, a fourth protrusion 19 and a second fixing bolt 20, the left rear middle part of the third sealing plate 12 is provided with a third slot penetrating left and right, the right rear middle part of the third sealing plate 12 is provided with a fourth slot penetrating left and right, the left front middle part of the fourth sealing plate 13 is provided with a third protrusion 18 located in the third slot, the right front middle part of the fourth sealing plate 13 is provided with a fourth protrusion 19 located in the fourth slot, the front middle part of the third protrusion 18 and the front middle part of the fourth protrusion 19 are respectively provided with a second fixing screw hole, the front side of the third sealing plate 12 corresponding to the position of the second fixing screw hole is provided with a second fixing through hole penetrating front and back, the second fixing through hole is provided with a second fixing bolt 20 with a rear end fixedly installed in the second fixing screw hole through threaded connection. In the use process, by setting the first protrusion 16, the second protrusion, the first slot and the second slot, the end faces of the first sealing plate 10 and the second sealing plate 11 adopt the mortise and tenon buckling mode, which can significantly improve the structural stability and sealing reliability of the left sealing plate, and the concave-convex matching design of the mortise and tenon makes the end faces of the first sealing plate 10 and the second sealing plate 11 form accurate mechanical interlocking when buckling, effectively resisting the impact of the internal pressure of the pipeline on the sealing surface, preventing the end faces from being dislocated or separated due to vibration or pressure fluctuation; by setting the first fixing bolt 17, the left sealing plate tightly holds the straight pipe section at the end of the elbow 1; the lower sealing plate has the same principle as the left sealing plate, and the effect will not be described again. In addition, compared with the existing elbow 1 leak stop clamp (such as CN222616337U), the sealing plates (front sealing plate and bottom sealing plate) arranged at the end thereof adopt the design of embedding the built-in clamping groove into the inner part of the clamp, and the utility model adopts the externally arranged left sealing plate and lower sealing plate, which can directly cover and tightly adhere to the end face of the elbow 1 in cooperation with the sealing ring 14, eliminate the microscopic gap that may be caused by the cumulative tolerance of the multi-layer clamping groove, ensure that the sealing surface and the end of the elbow 1 form continuous and uninterrupted physical barriers, and fundamentally improve the adaptability of the sealing capacity of the irregular end face of the elbow 1; in addition, the externally arranged left sealing plate and lower sealing plate can be independently disassembled and replaced, without the need to disassemble the entire clamp system, which greatly reduces the difficulty and cost of later maintenance, while the built-in sealing plate must be disassembled and installed through the nested installation of the multi-layer clamping groove, which inevitably damages the overall structure of the clamp, resulting in low maintenance efficiency and increased risk of secondary leakage.Therefore, the utility model discloses not only can simplify the structure, still effectively promote maintainability and enhance the sealed reliability, the long -term operation performance of fixture whole is obviously optimized.

[0036] Embodiment 5: as shown in the accompanying Figure 1 、 2 , 3, 4, 5, 6 also include first connecting bolt 21 and fixed block 22, upper arc plate 8 left end upper side, upper arc plate 8 lower end right side, lower arc plate 9 left end lower side and lower arc plate 9 lower end left side all fixedly installed with fixed block 22, first sealing plate 10, second sealing plate 11, third sealing plate 12 and fourth sealing plate 13 are fixedly installed together through first connecting bolt 21 and the fixed block 22 of corresponding position.In the use process, through setting first connecting bolt 21 and fixed block 22, it is convenient for left sealing plate and lower sealing plate to be quickly and detachably fixedly installed together with upper arc plate 8 and lower arc plate 9.

[0037] Embodiment 6: as shown in the accompanying Figure 1 、 2 , 3, 4, 5, 6 also include second connecting bolt 23, first sealing plate 10 and front side plate 6 left side are fixedly installed together through second connecting bolt 23, second sealing plate 11 and rear side plate 7 left side are fixedly installed together through second connecting bolt 23, third sealing plate 12 and front side plate 6 lower side are fixedly installed together through second connecting bolt 23, fourth sealing plate 13 and rear side plate 7 lower side are fixedly installed together through second connecting bolt 23.In the use process, through setting second connecting bolt 23, it is convenient for left sealing plate and lower sealing plate to be quickly and detachably fixedly installed together with front side plate 6 and rear side plate 7.

[0038] Embodiment 7: as shown in the accompanying Figure 1 、 2 , 3, 4, 5, 6 also include third connecting bolt 24 and connecting nut 25, corresponding upper arc plate 8 upper position's front side plate 6 and rear side plate 7 are fixedly installed together through several third connecting bolt 24 and connecting nut 25, corresponding lower arc plate 9 lower position's front side plate 6 and rear side plate 7 are fixedly installed together through several third connecting bolt 24 and connecting nut 25.In the use process, through setting third connecting bolt 24 and connecting nut 25, it is convenient for front side plate 6 to be quickly and detachably fixedly installed together with the whole formed by rear side plate 7, upper arc plate 8 and lower arc plate 9.

[0039] Embodiment 8: as shown in the accompanying Figure 1 、 2, 3, 4, 5, 6, further comprising a locking nut 26 and a jacking bolt 27, the sealing patch 3 is provided with at least one positioning blind hole, the outer side of the clamp body corresponding to the position of each positioning blind hole is provided with a mounting hole, the outer side of the clamp body corresponding to the position of the mounting hole is fixedly provided with the locking nut 26, and the jacking bolt 27 with an inner end located in the positioning blind hole is fixedly provided in the locking nut 26 through thread connection. In the use process, the jacking bolt 27 is arranged, so that the inner end is located in the positioning blind hole, and the sealing patch 3 is pressed.

[0040] Embodiment 9: as shown in the accompanying Figure 1 , 2 , 3, 4, 5, 6, further comprising an injection glue valve 28 and an exhaust valve 29, the injection glue valve 28 is installed on the clamp body corresponding to the position of the injection glue hole 4, and the exhaust valve 29 is installed on the clamp body corresponding to the position of the exhaust hole 5. In the use process, the injection glue hole 4 is provided with the injection glue valve 28, so that the injection glue injection process can be accurately controlled, and the injection glue flow and pressure can be dynamically adjusted according to the actual leakage pressure through valve operation, so that the overflow of sealing glue caused by instantaneous high pressure or the impact on the clamp structure is avoided, and meanwhile, the uniform filling of sealing glue in each area of the injection cavity 2 is ensured; and the exhaust hole 5 is provided with the exhaust valve 29, so that the gas retention problem in the cavity during the injection process can be effectively solved, the valve design allows the initial air to be discharged before injection, and the accumulated gas is released in time during the injection process, so that the sealing defects caused by the formation of air bags are prevented. As described above, the double-valve cooperative mechanism not only guarantees the complete filling of the injection cavity 2, but also enhances the adhesion of the sealing glue to the surface of the elbow 1 through pressure balance, fundamentally eliminates the risk of local sealing failure caused by gas retention, and significantly improves the reliability and long-term sealing performance of the plugging operation.

[0041] The above technical features constitute the best embodiment of the utility model, have strong adaptability and best implementation effect, and can increase or decrease unnecessary technical features according to actual needs to meet the needs of different situations.

Claims

1. A clamp for plugging a leak in a bend under pressure, characterized in that The clamp body, the elbow and the sealing patch are included, the clamp body is detachably fixedly installed on the outer side of the elbow, the glue injection cavity is formed between the inner side of the clamp body and the outer side of the elbow, the sealing patch is fixedly installed on the outer side of the elbow corresponding to the leakage point position, the glue injection hole capable of communicating with the glue injection cavity is arranged on the lower side of the clamp body, and the exhaust hole capable of communicating with the glue injection cavity is arranged on the upper side of the clamp body; the locking nut and the jacking bolt are further included, at least one positioning blind hole is arranged on the sealing patch, the mounting hole is arranged on the outer side of the clamp body corresponding to the position of each positioning blind hole, the locking nut is fixedly installed on the outer side of the clamp body corresponding to the position of the mounting hole, and the jacking bolt with the inner end located in the positioning blind hole is fixedly installed in the locking nut in a threaded connection mode.

2. The elbow band-press plugging clamp according to claim 1, characterized in that The clamp body includes the front side plate, the rear side plate, the upper arc-shaped plate, the lower arc-shaped plate, the left sealing plate and the lower sealing plate, the left sealing plate is arranged on the outer side of the left part of the elbow, the lower sealing plate is arranged on the outer side of the lower part of the elbow, the rear side plate is arranged at the rear of the elbow corresponding to the position between the left sealing plate and the lower sealing plate, the upper arc-shaped plate is fixedly installed on the front side of the rear side plate corresponding to the position above the elbow, the lower arc-shaped plate is fixedly installed on the front side of the rear side plate corresponding to the position below the elbow, and the front side plate can be detachably fixedly installed together with the rear side plate at the front of the elbow; the left side of the front side plate, the rear side plate, the upper arc-shaped plate and the lower arc-shaped plate is detachably fixedly installed together with the right side of the left sealing plate, and the lower side of the front side plate, the rear side plate, the upper arc-shaped plate and the lower arc-shaped plate is detachably fixedly installed together with the upper side of the lower sealing plate.

3. The elbow band-press plugging clamp according to claim 2, characterized in that The sealing ring is further included, the first sealing hole is arranged on the left side of the left sealing plate, the first sealing ring groove is arranged in the first sealing hole, the second sealing hole is arranged on the lower side of the lower sealing plate, the second sealing ring groove is arranged in the second sealing hole, and the sealing ring is arranged in the first sealing ring groove and the second sealing ring groove; the left sealing plate includes the first sealing plate and the second sealing plate which can be detachably fixedly installed together, and the lower sealing plate includes the third sealing plate and the fourth sealing plate which can be detachably fixedly installed together.

4. The elbow band-press plugging clamp according to claim 3, characterized in that The left sealing plate further comprises a first protrusion, a second protrusion and a first fixing bolt, the upper part of the rear side of the first sealing plate is provided with a first slot penetrating up and down, the lower part of the rear side of the first sealing plate is provided with a second slot penetrating up and down, the upper part of the front side of the second sealing plate is provided with the first protrusion located in the first slot, the lower part of the front side of the second sealing plate is provided with the second protrusion located in the second slot, the front side of the middle part of the first protrusion and the front side of the middle part of the second protrusion are respectively provided with a first fixing hole, the front side of the first sealing plate corresponding to the position of the first fixing hole is provided with a first fixing through hole penetrating front and back, and the first fixing through hole is provided with the first fixing bolt fixedly installed in the first fixing hole through threaded connection at the rear end.

5. A clamp as claimed in claim 3 or 4, wherein The upper arc-shaped plate further comprises a first connecting bolt and a fixing block, the upper side of the left end of the upper arc-shaped plate, the right side of the lower end of the upper arc-shaped plate, the lower side of the left end of the lower arc-shaped plate and the left side of the lower end of the lower arc-shaped plate are fixedly installed with the fixing block, and the first sealing plate, the second sealing plate, the third sealing plate and the fourth sealing plate are fixedly installed together through the first connecting bolt and the fixing block at the corresponding positions.

6. The elbow band-press plugging clamp according to claim 1 or 2 or 3 or 4, characterized in that The upper arc-shaped plate further comprises a first connecting bolt and a fixing block, the upper side of the left end of the upper arc-shaped plate, the right side of the lower end of the upper arc-shaped plate, the lower side of the left end of the lower arc-shaped plate and the left side of the lower end of the lower arc-shaped plate are fixedly installed with the fixing block, and the first sealing plate, the second sealing plate, the third sealing plate and the fourth sealing plate are fixedly installed together through the first connecting bolt and the fixing block at the corresponding positions.

7. The elbow band-press plugging clamp of claim 5, wherein The upper arc-shaped plate further comprises a first connecting bolt and a fixing block, the upper side of the left end of the upper arc-shaped plate, the right side of the lower end of the upper arc-shaped plate, the lower side of the left end of the lower arc-shaped plate and the left side of the lower end of the lower arc-shaped plate are fixedly installed with the fixing block, and the first sealing plate, the second sealing plate, the third sealing plate and the fourth sealing plate are fixedly installed together through the first connecting bolt and the fixing block at the corresponding positions. The upper arc-shaped plate further comprises a first connecting bolt and a fixing block, the upper side of the left end of the upper arc-shaped plate, the right side of the lower end of the upper arc-shaped plate, the lower side of the left end of the lower arc-shaped plate and the left side of the lower end of the lower arc-shaped plate are fixedly installed with the fixing block, and the first sealing plate, the second sealing plate, the third sealing plate and the fourth sealing plate are fixedly installed together through the first connecting bolt and the fixing block at the corresponding positions.

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