A flange temporary connecting device

Abstract

The utility model discloses a kind of flange temporary connecting devices, belong to pipeline maintenance field.Its technical scheme is, a kind of flange temporary connecting device, including flexible connecting piece, the first end of flexible connecting piece is equipped with tightening mechanism, and the second end of flexible connecting piece is detachably installed on the tightening mechanism;Multiple clamping plates are installed on the flexible connecting piece, clamping plate can be moved along the length direction of the flexible connecting piece, and the side edge of clamping plate is equipped with wedge slot, when the both ends of the flexible connecting piece are connected, the wedge slot is all towards the ring inside the annular ring formed by the flexible connecting piece.This scheme, multiple clamping plates are arranged around flange plate, two flange plates are clamped into wedge slot, with the gradually tightening contraction diameter of the annular ring formed by flexible connecting piece, wedge slot makes two flange plates gradually press tightly each other, realize the temporary fixing of flange plate, without repeatedly installing bolt in this process, greatly simplify the dismounting process of blind plate when pipeline maintenance, improve maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipeline maintenance, and in particular to a temporary flange connection device. Background Technology

[0002] Piping systems are a crucial component of industrial production processes, widely used in industries such as chemical, petroleum, and power, playing a key role in transporting fluids (such as liquids and gases) and connecting various production equipment. Flanges, as core connectors in piping systems, primarily function to achieve detachable connections between pipes and between pipes and equipment, while ensuring the sealing performance of the connection points to prevent fluid leakage. In traditional connection methods, flanges are typically secured with a ring of bolts and nuts, utilizing the preload of the bolts to ensure a tight fit between the flange faces, thus achieving a seal.

[0003] During production operations, pipeline systems frequently undergo equipment installation, periodic maintenance, and emergency failure repairs. During pipeline system maintenance, temporary sealing of nodes is necessary. This involves installing blind flanges between flanges to completely isolate the pipeline or equipment to be maintained from other operating parts, preventing leakage of media (such as toxic, harmful, flammable, or explosive fluids), ensuring the safety of maintenance personnel, and facilitating the smooth progress of maintenance work.

[0004] However, the installation and removal of blind flanges requires repeating the flange disassembly and assembly process twice. The operation steps are cumbersome, requiring each bolt to be tightened or loosened. This not only consumes a lot of time but also requires a lot of manpower. Especially in large-scale production systems, this traditional method will lead to extended equipment downtime and indirectly affect production efficiency. Summary of the Invention

[0005] This utility model addresses the problem of cumbersome and time-consuming steps in repeatedly disassembling and assembling flange bolts during flange maintenance by providing a temporary flange connection device.

[0006] To solve the above problems, the technical solution adopted by this utility model is a temporary flange connection device, including a flexible connector. The first end of the flexible connector is provided with a tightening mechanism, and the second end of the flexible connector is detachably mounted on the tightening mechanism. Multiple clamping plates are installed on the flexible connector, and the clamping plates can move along the length of the flexible connector. A wedge-shaped groove is provided on one side edge of each clamping plate. When the two ends of the flexible connector are connected, the wedge-shaped grooves all face the inner ring formed by the flexible connector. In use, multiple clamping plates surround the flange, and the two flanges are engaged in the wedge-shaped grooves. As the ring formed by the flexible connector gradually tightens and narrows, the wedge-shaped grooves gradually press the two flanges together, achieving temporary fixing of the flanges. This process eliminates the need for repeated bolt installation, greatly simplifying the disassembly and assembly process of blind flanges during pipeline maintenance and improving maintenance efficiency.

[0007] As a preferred embodiment of a temporary flange connection device, two flexible connectors are provided, located on opposite sides of the wedge-shaped groove along its width. The two flexible connectors provide stable traction to the clamping plate from both sides of the wedge-shaped groove. When the tightening mechanism operates, the tension on both sides is evenly applied to the clamping plate, preventing tilting or displacement of the clamping plate that might occur when only one flexible connector is under stress. The dual-sided force-bearing structure ensures a tighter contact between the wedge-shaped groove and the flange, resulting in a more uniform pressure distribution and enhanced stability of the temporary connection, further improving the reliability and safety of the device.

[0008] As a preferred embodiment of a temporary flange connection device, the flexible connector is attached to the side of the clamping plate away from the wedge groove. This ensures the clamping force of the wedge groove on the flange, reduces the risk of deformation of the clamping plate due to uneven stress, extends the service life of the device, and ensures stable stress on the flange sealing surface, thus improving the temporary sealing effect.

[0009] As a preferred embodiment of a temporary flange connection device, the flexible connector includes a steel strip body. A fixed seat is provided at the first end of the steel strip body, and a worm gear is rotatably mounted on the fixed seat. Multiple oblique grooves are provided at the second end of the steel strip body, passing through the fixed seat. The oblique grooves engage with the teeth of the worm gear. A square groove is formed in the clamping plate, through which the steel strip body passes. The engagement of the worm gear and the oblique grooves enables precise tightening control, allowing adjustment of the tightening force as needed. The high strength and stable deformation of the steel strip body ensure the robustness of the connection. The square groove design allows for flexible adjustment of the clamping plate position, adapting to flanges of different specifications and improving the versatility of the device.

[0010] As a preferred embodiment of a temporary flange connection device, the clamping plate is provided with a support plate, which is perpendicular to the clamping plate and extends to both sides of the clamping plate. One side of the support plate is flush with the flat groove wall of the wedge-shaped groove. The support plate contacts the surface of the flange, increasing the contact area and further improving the stability of the connection. It also improves the perpendicularity of the clamping plate, the wedge-shaped groove, and the flange, greatly enhancing the stability of the clamping plate installation.

[0011] As a preferred embodiment of a temporary flange connection device, a reinforcing rib is provided between the support plate and the clamping plate, and the reinforcing rib, the support plate, and the clamping plate are perpendicular to each other. This improves the overall structural strength of the clamping plate, enabling the device to withstand greater loads and meet the temporary connection requirements of high-pressure pipelines or heavy flanges, while also extending the service life of the device and reducing maintenance costs.

[0012] As a preferred embodiment of a temporary flange connection device, the surface of the inclined groove wall of the wedge-shaped groove is provided with anti-slip texture. After the clamping plate is tightened, the edge of the flange is engaged in the anti-slip texture, making the connection and fixation tighter and preventing loosening and displacement. This improves the stability of the temporary flange fixation.

[0013] As a preferred implementation of a temporary flange connection device, the number of clamping plates is the same as the number of bolt holes on the flange. Each clamping plate is installed corresponding to one bolt hole position on the flange, so that the clamping plates are evenly distributed on the flange circumference. At the same time, the positioning position and number are the same as the original bolt connection, ensuring the connection strength.

[0014] As can be seen from the above technical solutions, the advantages of this utility model are as follows: By using flexible connectors in conjunction with wedge-grooved clamping plates, temporary fixing of the flange can be achieved without repeated bolt installation, greatly simplifying the blind flange disassembly and assembly process during pipeline maintenance and significantly improving maintenance efficiency; the two flexible connectors form stable traction from both sides of the wedge-grooved grooves, making the pressure distribution more uniform and enhancing the stability and safety of the temporary connection; the flexible connectors are connected to the side away from the wedge-grooved grooves, ensuring clamping force while reducing clamping plate deformation, extending service life and improving sealing effect; the steel strip body and worm gear work together to achieve precise tightening control, and the square groove design allows for flexible clamping plate position adjustment, improving the versatility of the device and the connection's firmness; the support plate increases the contact area and improves installation verticality, while the reinforcing ribs enhance the overall structural strength, enabling the device to withstand greater loads and adapt to high-pressure or heavy-duty flange requirements, while extending service life and reducing maintenance costs; the anti-slip texture of the wedge-grooved grooves prevents flange loosening and displacement, further improving fixing stability; the number of clamping plates is the same as the flange bolt holes, ensuring their uniform distribution and guaranteeing the connection strength is consistent with the original bolt connection. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the card plate in a specific embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the flexible connector in a specific embodiment of the present invention.

[0019] Figure 4This is a schematic diagram of the tightening mechanism in a specific embodiment of the present invention.

[0020] Explanation of main figure symbols 1. Flexible connector, 11. Steel strip body, 12. Fixing seat, 13. Worm gear, 14. Angled groove, 2. Clamping plate, 3. Wedge groove, 4. Square groove, 5. Support plate, 6. Reinforcing rib plate, 7. Anti-slip texture. Detailed Implementation

[0021] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0022] like Figure 1 , 2 As shown, a temporary flange connection device includes a flexible connector 1. The first end of the flexible connector 1 is provided with a tightening mechanism, and the second end of the flexible connector 1 is detachably mounted on the tightening mechanism. Multiple clamping plates 2 are installed on the flexible connector 1, and the clamping plates 2 are movable along the length of the flexible connector 1. A wedge-shaped groove 3 is provided on one side edge of each clamping plate 2. A support plate 5 is also provided on each clamping plate 2, perpendicular to the clamping plate 2 and extending to both sides of the clamping plate 2. One side of the support plate 5 is flush with the flat groove wall of the wedge-shaped groove 3. A reinforcing rib 6 is also provided between the support plate 5 and the clamping plate 2, and the reinforcing rib 6, the support plate 5, and the clamping plate 2 are perpendicular to each other. The surface of the inclined groove wall of the wedge-shaped groove 3 is provided with anti-slip texture 7. When the two ends of the flexible connector 1 are connected, the wedge-shaped grooves 3 all face the inner ring formed by the flexible connector 1. The number of clamping plates 2 is the same as the number of bolt holes on the flange.

[0023] In this embodiment, the flexible connector 1 is a clamp structure, such as... Figure 3 , 4 As shown, the flexible connector 1 includes a steel strip body 11, a fixed seat 12 is provided at the first end of the steel strip body 11, a worm gear 13 is rotatably mounted on the fixed seat 12, and a plurality of oblique grooves 14 are provided at the second end of the steel strip body 11. The second end of the steel strip body 11 passes through the fixed seat 12, and the oblique grooves 14 are engaged with the teeth of the worm gear 13. A square groove 4 is provided in the clamping plate 2, and the steel strip body 11 passes through the square groove 4.

[0024] Furthermore, on the card plate 2, the flexible connector 1 is connected to the side away from the wedge groove 3. There are two flexible connectors 1, and in the width direction of the wedge groove 3, the two flexible connectors 1 are respectively located on both sides of the wedge groove 3.

[0025] When using this temporary flange connection device, first prepare a corresponding number of clamping plates according to the number of bolt holes on the flange. Distribute multiple clamping plates around the flange, aligning each clamping plate with a bolt hole position. Next, pass two flexible connectors (steel strip bodies) through the square grooves on the clamping plates from both sides of the wedge groove width direction, and connect them to the side of the clamping plate away from the wedge groove. Then, after the steel strip body is wrapped around the flange, pass its second end through the fixing seat at the first end. Subsequently, rotate the worm gear on the fixing seat. The worm gear teeth engage with the oblique groove at the second end of the steel strip body, causing the steel strip to tighten. During this process, the clamping plates can slide along the steel strip body to adapt to the flange specifications. At this time, the two flanges are inserted into the wedge grooves of the clamping plates, and the support plate forms a support from the bottom of the flanges, cooperating with the wedge grooves to clamp the flanges. As the steel strip gradually tightens and the diameter decreases, the wedge grooves press the two flanges together, and the anti-slip texture of the oblique groove wall engages with the flange edge, completing the temporary fixing of the flange. The entire process does not require repeated disassembly and assembly of bolts, making the operation convenient and efficient.

[0026] As can be seen from the above embodiments, the beneficial effects of this utility model are as follows: By cooperating with the flexible connector and the wedge-grooved clamping plate, temporary fixing of the flange can be achieved without repeated bolt installation, greatly simplifying the blind flange disassembly and assembly process during pipeline maintenance and significantly improving maintenance efficiency; the two flexible connectors form a stable traction from both sides of the wedge-grooved groove, making the pressure distribution more uniform and enhancing the stability and safety of the temporary connection; the flexible connector is connected to the side away from the wedge-grooved groove, ensuring both clamping force and reducing clamping plate deformation, extending service life and improving sealing effect; the steel strip body and worm gear cooperate to achieve precise tightening control, and the square groove design allows for flexible adjustment of the clamping plate position, improving the versatility of the device and the connection firmness; the support plate increases the contact area and improves the installation verticality, while the reinforcing ribs improve the overall structural strength, enabling the device to withstand greater loads and adapt to high-pressure or heavy-duty flange requirements, while extending service life and reducing maintenance costs; the anti-slip texture of the wedge-grooved groove prevents flange loosening and displacement, further improving fixing stability; the number of clamping plates is the same as the flange bolt holes, ensuring their uniform distribution and guaranteeing the consistency of connection strength with the original bolt connection.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flange temporary connection device, characterized in that, Includes a flexible connector (1), the first end of which is provided with a tightening mechanism, and the second end of which is detachably mounted on the tightening mechanism; a plurality of clamping plates (2) are installed on the flexible connector (1), the clamping plates (2) can move along the length direction of the flexible connector (1), and a wedge groove (3) is provided on one side edge of the clamping plate (2). When the two ends of the flexible connector (1) are connected, the wedge grooves (3) are all facing the ring formed by the flexible connector (1).

2. The flange temporary connection device according to claim 1, characterized in that, Two flexible connectors (1) are provided, and in the width direction of the wedge groove (3), the two flexible connectors (1) are respectively located on both sides of the wedge groove (3).

3. The flange temporary connection device according to claim 1, characterized in that, On the card plate (2), the flexible connector (1) is connected to the side away from the wedge groove (3).

4. The flange temporary connection device according to any one of claims 1-3, characterized in that, The flexible connector (1) includes a steel strip body (11), a fixed seat (12) is provided at the first end of the steel strip body (11), a worm gear (13) is rotatably mounted on the fixed seat (12), a plurality of oblique grooves (14) are provided at the second end of the steel strip body (11), the second end of the steel strip body (11) passes through the fixed seat (12), and the oblique grooves (14) are engaged with the teeth of the worm gear (13); a square groove (4) is provided in the clamping plate (2), and the steel strip body (11) passes through the square groove (4).

5. The flange temporary connection device according to any one of claims 1-3, characterized in that, The card plate (2) is provided with a support plate (5), the support plate (5) is perpendicular to the card plate (2), the support plate (5) extends to both sides of the card plate (2), and one side of the support plate (5) is flush with the flat groove wall of the wedge groove (3).

6. The flange temporary connection device according to claim 5, characterized in that, A reinforcing rib (6) is provided between the pallet (5) and the card plate (2), and the reinforcing rib (6), the pallet (5) and the card plate (2) are perpendicular to each other.

7. The flange temporary connection device according to any one of claims 1-3, characterized in that, The surface of the inclined groove wall of the wedge groove (3) is provided with anti-slip texture (7).

8. The flange temporary connection device according to any one of claims 1-3, characterized in that, The number of the card plates (2) is the same as the number of bolt holes on the flange.

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