Flange clamping device

Abstract

The utility model discloses a flange clamping device belongs to pipeline connecting device technical field. The flange clamping device includes clamping mechanism, and clamping mechanism is provided with control assembly, drive mechanism and clamp, and control assembly includes control valve, and control valve is connected with drive mechanism, and drive mechanism is connected with clamp, and transition structure, and transition structure is connected with clamping mechanism through clamp. The quick installation and positioning are realized through the cooperation between positioning groove and protruding between clamping mechanism and transition structure, and the speed of installation and dismounting in product detection process is accelerated, and the test efficiency is improved. The clamping or retraction of claw hook is controlled through drive mechanism and control assembly of clamp, and drive mechanism adopts cylinder, reduces the cost of detection equipment, and avoids the problem that the detection environment is polluted simultaneously.

Description

Technical Field

[0001] This utility model relates to a flange clamping device, belonging to the technical field of pipeline connection devices. Background Technology

[0002] In recent years, with the continuous advancement of valve testing technology, the requirements for valve testing efficiency have become increasingly stringent. Production lines and testing lines will gradually replace the original manual operations. When testing valves, it is necessary to seal the valves and pipelines. At present, the most common connection method is still to use sealing rings and bolts, but its efficiency is low and cannot meet the requirements of enterprises for testing efficiency.

[0003] Chinese patent document CN114962835A discloses a jaw-type quick clamping device for flange connection, which replaces screw connection and improves testing efficiency. However, the jaw is driven by multiple hydraulic cylinders, which is costly and prone to leakage, affecting the consistency of clamping force and causing pollution to the testing environment. In addition, the hydraulic cylinders are not connected, so they cannot achieve synchronous clamping, resulting in uneven force on the flange. Utility Model Content

[0004] This utility model provides a flange clamping device that solves the problems of high cost, easy hydraulic oil leakage, pollution of the testing environment, and uneven force on the flange caused by the use of hydraulic cylinders for driving in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a flange clamping device, including

[0007] A clamping mechanism is provided with a control component, a drive mechanism, and a clamp. The control component includes a control valve, which is connected to the drive mechanism, and the drive mechanism is connected to the clamp.

[0008] A transition structure is provided, which is connected to the clamping mechanism via the clamp.

[0009] In one embodiment of this utility model, the transition structure includes a fifth flange and a protrusion, with the protrusion and the fifth flange disposed on both sides of the transition structure.

[0010] In one embodiment of this utility model, the clamping mechanism includes a fourth flange, which is provided with a positioning groove and a sealing element. The sealing element is nested in the fourth flange, and the positioning groove engages with the protrusion. This facilitates quick disassembly and clamping of the product. The sealing element is fixedly connected to the fourth flange and will not fall off, eliminating the need for repeated installation, saving installation time, and improving testing efficiency.

[0011] In one embodiment of this utility model, the control valve includes a first control valve and a second control valve, the first control valve and the second control valve are connected in parallel, and both the first control valve and the second control valve are connected to the drive mechanism.

[0012] In one embodiment of this utility model, the clamp is provided with a claw hook and a spring. One end of the claw hook is connected to the driving mechanism, and the end of the claw hook away from the driving mechanism abuts against the transition structure. The two ends of the spring are respectively connected to the driving mechanism and the claw hook.

[0013] In one embodiment of this utility model, the clamp further includes a waist-shaped hole and a base. The waist-shaped hole is an irregularly shaped waist-shaped hole, and the claw hook is connected to the base through the waist-shaped hole.

[0014] In one embodiment of this utility model, the number of claw hooks is 4, the driving mechanism is a cylinder, and the number of driving mechanisms is adapted to the number of claw hooks.

[0015] In one embodiment of this invention, a heat insulation layer is provided between the flange pipe of the driving mechanism and the clamping mechanism. This layer can keep the liquid in the pipeline warm and prevent low temperatures from affecting the movement of the driving mechanism.

[0016] In one embodiment of this utility model, a first flange is included, and the clamping mechanism includes a third flange, wherein the first flange is connected to the third flange.

[0017] In one embodiment of this utility model, the control component further includes a pressure reducing valve, which is connected in series with the control valve.

[0018] Beneficial effects

[0019] This utility model provides a flange clamping device comprising a clamping mechanism and a transition structure. The clamping mechanism and the transition structure achieve rapid installation and positioning through a positioning groove and a protrusion, and clamping is achieved through the claw hooks of the fixture, accelerating the installation and disassembly process during product testing and improving testing efficiency. The fixture controls the clamping or retraction of the claw hooks through a drive mechanism and control components. The drive mechanism uses a cylinder, reducing the cost of the testing equipment and avoiding pollution of the testing environment. The device controls the movement of the drive mechanism through two parallel control valves, resulting in simple control logic and eliminating the need for electrical control, thus enhancing the safety of the testing equipment. Attached Figure Description

[0020] Figure 1 A perspective view of the flange clamping device provided by this utility model.

[0021] Figure 2 A perspective view of the transition structure provided by this utility model.

[0022] Figure 3 The front view of the clamping mechanism provided by this utility model.

[0023] Figure 4 A perspective view of the clamping mechanism provided by this utility model.

[0024] Figure 5 A perspective view of the clamping mechanism provided by this utility model in the released state.

[0025] Figure 6 A schematic diagram illustrating the control principle provided by this utility model.

[0026] In the picture:

[0027] 1. First flange; 2. Product; 21. Second flange; 3. Clamping mechanism; 31. Third flange; 32. Drive mechanism; 33. Control assembly; 331. Pressure reducing valve; 332. Control valve; 3321. First control valve; 3322. Second control valve; 34. Clamp; 341. Claw hook; 342. Waist-shaped hole; 343. Base; 344. Spring; 35. Fourth flange; 351. Positioning groove; 352. Seal; 36. Thermal insulation layer; 4. Transition structure; 41. Fifth flange; 42. Protrusion. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] like Figures 1 to 6 As shown, this application provides a flange clamping device that solves the problems of existing technologies that use hydraulic cylinders for driving, resulting in high costs, easy hydraulic oil leakage, pollution of the testing environment, and uneven force on the flange due to the lack of synchronous clamping by the disconnected hydraulic cylinders. The flange clamping device includes a first flange 1, a product 2, a clamping mechanism 3, and a transition structure 4. The first flange 1 is a medium outlet flange. One end of the first flange 1 is connected to the clamping mechanism 3. The end of the clamping mechanism 3 opposite to the first flange 1 is connected to the transition structure 4. The end of the transition structure 4 opposite to the clamping mechanism 3 is connected to the product 2, forming a complete detection loop. The medium flows through the first flange 1 into the pipe in the middle of the clamping mechanism 3, and then sequentially into the transition structure 4 and the product 2 through the clamping mechanism 3, allowing for the testing of the product 2's performance. A second flange 21 is provided at one end of the product 2; the product 2 is connected to the transition structure 4 through the second flange 21.

[0032] In some embodiments, the clamping mechanism 3 is provided with a third flange 31, which is connected to the first flange 1 by bolts or screws. A drive mechanism 32, a control component 33, and a clamp 34 are provided on the side of the third flange 31 opposite to the first flange 1. The drive mechanism 32 is mounted on the flange tube of the clamping mechanism 3, the control component 33 is mounted on and connected to the drive mechanism 32, and the clamp 34 is connected to the drive mechanism 32. The control component 33 controls the movement of the clamp 34 by controlling the movement of the drive mechanism 32. A fourth flange 35 is provided on the side of the clamping mechanism 3 opposite to the third flange 31, and the fourth flange 35 is connected to the transition structure 4. When the transition structure 4 is connected to the fourth flange 35, the control component 33 controls the drive mechanism 32 to move, thereby causing the clamp 34 to clamp the transition structure 4. After the product 2 is inspected, the clamp 34 is opened, and the transition structure 4 and the product 2 can be removed together.

[0033] In some embodiments, the clamp 34 includes a claw hook 341, a waist-shaped hole 342, a base 343, and a spring 344. One end of the claw hook 341 is connected to the drive mechanism 32, and the other end is claw-shaped, capable of hooking the transition structure 4. The waist-shaped hole 342 is an irregularly shaped waist-shaped hole, located in the middle of the claw hook 341. The claw hook 341 is connected to the base 343 through the waist-shaped hole 342. The base 343 is mounted on the flange tube of the clamping mechanism 3. The waist-shaped hole 342 and the base 343 can be connected by a pin and a bearing. An anti-detachment pin is also provided between the claw hook 341 and the base 343 to prevent the clamped transition structure 4 and product 2 from falling off in the event of pressure loss, air interruption, or leakage in the drive mechanism 32. The two ends of the spring 344 are connected to the drive mechanism 32 and the claw hook 341, respectively. When the drive mechanism 32 stops moving, the spring 344 can pull back the claw hook 341 to clamp the transition structure 4.

[0034] In some embodiments, the fourth flange 35 is provided with a positioning groove 351 and a sealing element 352 on the side near the transition structure 4. The sealing element 352 is nested in the groove of the fourth flange, and when the transition structure is connected to the fourth flange 35, it can abut against the transition structure 4 to form a seal. The positioning groove 351 can cooperate with the transition structure 4 to position the transition structure 4, enabling the rapid installation of the transition structure 4. Moreover, due to the limiting effect of the positioning groove 351, the transition structure 4 and the product will not fall off when the claw hook 341 is released.

[0035] In some embodiments, the drive mechanism 32 is a cylinder, and the number of drive mechanisms 32 is adapted to the number of clamps 34. Each clamp 34 is equipped with one drive mechanism 32, and multiple drive mechanisms 32 are connected in series to ensure that the control component 33 can control the drive mechanisms 32 to move simultaneously, while driving the claw hooks 341 of the clamp 34 to clamp the transition structure 4, ensuring that the flange of the transition structure 4 is subjected to uniform force. In this embodiment, there are four sets of clamps 34 and drive mechanisms 32, evenly distributed on the outside of the clamping mechanism 3, and the piston rod end of the cylinder is connected to the tail end of the clamp 34. A heat insulation layer 36 is provided between the drive mechanism 32 and the flange pipe. The detection medium is a low-temperature substance, which can keep the liquid in the pipeline warm and prevent low temperature damage to the internal seals of the drive mechanism 32, which would lead to leakage and affect the movement of the drive mechanism 32.

[0036] In some embodiments, the control component 33 includes a pressure reducing valve 331 and a control valve 332. There are two control valves 332: a first control valve 3321 and a second control valve 3322. The first control valve 3321 and the second control valve 3322 are connected in parallel and are connected to the drive mechanism 32. High-pressure gas is introduced into the pipeline. The pressure reducing valve 331 is installed in the pipeline to regulate the gas pressure. The control valve 332 is opened or closed by rotating a handle. When the first control valve 3321 is open, air enters from the rodless side, the piston rod extends, and the claw hook 341 releases. When the first control valve 3321 is closed and the second control valve 3322 is open, air enters from the rod side, the piston rod retracts, and the claw hook 341 tightens, achieving a clamping function.

[0037] In some embodiments, the transition structure 4 includes a fifth flange 41 and a protrusion 42, which are disposed on both sides of the transition structure 4. The transition structure 4 is connected to the second flange 21 of the product 2 through the fifth flange 41. The protrusion 42 cooperates with the positioning groove 351 to connect the transition structure 4 to the clamping mechanism 3, and clamps it by abutting against the claw hook 341, which facilitates the quick disassembly and clamping of the product 2, thereby improving the inspection efficiency.

[0038] Optionally, the seal 352 is a sealing ring made of polytetrafluoroethylene. The seal 352 is fixedly connected to the fourth flange 35 and will not fall off. This eliminates the need for repeated installation, saves installation time, and improves testing efficiency.

[0039] The working principle of this utility model is as follows: Before testing product 2, the first flange 1 is connected to the third flange 31 of the clamping mechanism 3. Then, the fifth flange 41 of the transition structure 4 and the second flange 21 of product 2 are installed in the preparation room. Product 2, with the transition structure 4 connected, is transported to the testing site. The side of the transition structure 4 with the protrusion 42 is connected to the positioning groove 351 on the fourth flange 35. The drive mechanism 32 is controlled by the control component 33 to move, thereby driving the claw hook 341 on the clamp 34 to clamp the transition structure 4, connecting the product 2 to be tested to the pipeline of the testing equipment, and the testing begins. After the testing is completed, the control component 33 controls the drive mechanism 32 to extend, pushing the claw hook 341 to open and releasing the transition structure 4. At this time, the transition structure 4 and product 2 can be removed. This flange clamping device has a simple and compact structure. The transition structure 4, with its protrusion 42, engages with the positioning groove 351 on the fourth flange 35, allowing the product 2 to be quickly clamped onto the testing equipment, thus improving clamping speed. Simultaneously, the engagement of the positioning groove 351 with the protrusion 42, along with the anti-detachment pin, prevents the product from falling when the claw hook 341 is released. Furthermore, the device is driven by a cylinder, reducing testing costs and avoiding pollution of the testing environment.

[0040] This device replaces bolted connections with quick clamping, saving on-site assembly time. Specifically, during testing, there are multiple products 2 under test. If bolted connections were used, it would consume a lot of time. Using this device, a corresponding number of transition structures 4 can be fabricated, and the products 2 under test can be assembled with the transition structures 4 in advance in the preparation room, and the testing can be carried out simultaneously with the testing task, greatly saving actual testing time.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0043] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A flange clamping device, characterized in that, include: The clamping mechanism (3) is provided with a control component (33), a drive mechanism (32) and a clamp (34). The control component (33) includes a control valve (332), which is connected to the drive mechanism (32) and the drive mechanism (32) is connected to the clamp (34). Transition structure (4), which is connected to clamping mechanism (3) via clamp (34).

2. The flange clamping device according to claim 1, characterized in that, The transition structure (4) includes a fifth flange (41) and a protrusion (42), with the protrusion (42) and the fifth flange (41) disposed on both sides of the transition structure (4).

3. A flange clamping device according to claim 2, characterized in that, The clamping mechanism (3) includes a fourth flange (35), which is provided with a positioning groove (351) and a sealing element (352). The sealing element (352) is nested in the fourth flange (35), and the positioning groove (351) cooperates with the protrusion (42).

4. A flange clamping device according to claim 1, characterized in that, The control valve (332) includes a first control valve (3321) and a second control valve (3322), which are connected in parallel. Both the first control valve (3321) and the second control valve (3322) are connected to the drive mechanism (32).

5. A flange clamping device according to claim 1, characterized in that, The clamp (34) is provided with a claw hook (341) and a spring (344). One end of the claw hook (341) is connected to the drive mechanism (32), and the end of the claw hook (341) away from the drive mechanism (32) abuts against the transition structure (4). The two ends of the spring (344) are respectively connected to the drive mechanism (32) and the claw hook (341).

6. A flange clamping device according to claim 5, characterized in that, The clamp (34) also includes a waist-shaped hole (342) and a base (343). The waist-shaped hole (342) is an irregularly shaped waist-shaped hole, and the claw hook (341) is connected to the base (343) through the waist-shaped hole (342).

7. A flange clamping device according to claim 6, characterized in that, The number of claw hooks (341) is 4, the driving mechanism (32) is a cylinder, and the number of driving mechanisms (32) is adapted to the number of claw hooks (341).

8. A flange clamping device according to claim 7, characterized in that, A heat insulation layer (36) is provided between the drive mechanism (32) and the flange tube of the clamping mechanism (3).

9. A flange clamping device according to claim 1, characterized in that, The clamping mechanism (3) includes a first flange (1) and a third flange (31), wherein the first flange (1) is connected to the third flange (31).

10. A flange clamping device according to claim 4, characterized in that, The control component (33) also includes a pressure reducing valve (331), which is connected in series with the control valve (332).

Images