Composite performance testing device for polytetrafluoroethylene ripple compensator

Abstract

The utility model relates to the technical field of corrugated compensator testing, in particular to a polytetrafluoroethylene corrugated compensator composite performance testing device which comprises a frame and an oil circulation system arranged on one side of the frame, a bearing plate is fixedly installed on the frame, a supporting rod is fixedly installed on the bearing plate, and a top plate is fixedly installed on the supporting rod. A testing device for testing the performance of the compensator is arranged between the top plate and the bearing plate and comprises a mounting table and a movable plate which are arranged at the top of the bearing plate and used for fixing the compensator. According to the utility model, through the arrangement of the testing device, in the process of carrying out performance testing on the compensator, the compensator is heated and pressurized by adopting the oil circulation system, and the movable plate at the bottom is driven to move through the first oil cylinder, so that the compensator is driven to move in the vertical direction, and the compensator is elongated in the vertical direction to deform; and the elongation deformation distance is measured through an electronic ruler to obtain data.

Description

Technical Field

[0001] This utility model relates to the field of corrugated compensator testing technology, and in particular to a composite performance testing device for polytetrafluoroethylene corrugated compensators. Background Technology

[0002] PTFE (tetrafluoroethylene) bellows compensators (also known as expansion joints) are industrial instruments used in pipeline systems handling highly corrosive media. They compensate for thermal expansion and contraction displacement and installation deviations in the pipeline system, reducing vibration. They can eliminate the expansion, contraction, thermal expansion, or displacement of pipes, containers, or equipment caused by climate change or other reasons. They can also be installed at the inlet and outlet of pumps or at the ends of other high-frequency machinery to reduce or eliminate vibration, improving pipeline service life and sealing performance.

[0003] The compensation amount of an expansive is negatively correlated with its fatigue life; as the compensation demand increases, the fatigue life decreases significantly. In real-world operating conditions, expansive failure is often related to the difficulty in balancing compensation capacity and fatigue life. Therefore, it is essential to test both the compensation amount and fatigue life of the expansive. Existing expansive testing equipment mostly focuses on testing a single performance characteristic and largely employs manual pressure application or single-sensor testing, resulting in low testing accuracy, low testing efficiency, and the inability to synchronously record pressure and deformation data in real time during dynamic compression.

[0004] To address this, a composite performance testing device for polytetrafluoroethylene (PTFE) corrugated compensators is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a composite performance testing device for polytetrafluoroethylene corrugated compensators to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite performance testing device for a polytetrafluoroethylene (PTFE) corrugated compensator, comprising a frame and an oil circulation system disposed on one side of the frame. A bearing plate is fixedly installed on the frame, a support rod is fixedly installed on the bearing plate, and a top plate is fixedly installed on the support rod. A testing device for testing the compensator performance is provided between the top plate and the bearing plate. The testing device includes a mounting platform for fixing the compensator and a movable plate on the top of the bearing plate. A movable block is fixedly installed on the movable plate, and a connecting block is rotatably connected to the movable block. An angular displacement sensor is provided on the connecting block. Electronic rulers are provided on both the bearing plate and the top plate.

[0007] Preferably, a first hydraulic cylinder is fixedly installed on the top plate, and a movable plate is fixedly connected to the bottom end of the first hydraulic cylinder. The movable plate is slidably connected to the support rod, and the movable plate is fixedly connected to the electronic ruler installed on the top plate.

[0008] Preferably, the bottom end of the movable plate is fixedly connected to an installation plate, and the installation plate is fixedly connected to the connecting block. A cylinder is fixedly installed on the installation plate, and a pushing block is fixedly connected to the cylinder.

[0009] Preferably, a first slider is fixedly installed on the push block, a first slide rail is fixedly installed on the mounting plate, a push plate is movably connected between the push block and the movable plate, and a discharge pipe is provided on the movable plate.

[0010] Preferably, an installation frame is fixedly installed on the support plate, a second hydraulic cylinder is fixedly installed on the installation frame, a push plate is fixedly connected to the second hydraulic cylinder, and the push plate is fixedly connected to the installation platform.

[0011] Preferably, a second slider is fixedly installed at the bottom of the mounting platform, and a second slide rail is fixedly installed on the mounting frame.

[0012] Preferably, the bottom end of the mounting platform is fixedly connected to a curved plate, and the curved plate is fixedly connected to an electronic ruler on the support plate. The support plate is provided with an inlet pipe, and the inlet pipe extends into the mounting platform.

[0013] Preferably, both the mounting platform and the movable plate are provided with screw holes arranged from the center outwards.

[0014] The beneficial effects of this utility model are:

[0015] This invention employs a testing device to heat and pressurize the compensator during performance testing. A first hydraulic cylinder moves the bottom movable plate, causing the compensator to move vertically and elongate. The elongation and deformation distance is measured using an electronic ruler. A second hydraulic cylinder moves the mounting platform laterally, causing the compensator to displace and deform laterally. The deformation distance is then accurately measured using an electronic ruler.

[0016] This invention uses a cylinder to push the push block, which causes the movable plate at the bottom to rotate at an angle, thereby causing the top part of the compensator to undergo angular displacement deformation. The angular displacement sensor accurately records this deformation in real time. Therefore, the entire device synchronously records pressure and deformation data in real time during the dynamic compression process of the compensator, making the data more accurate. It eliminates the need for manual pressure application and improves testing efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a composite performance testing device for polytetrafluoroethylene corrugated compensators according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the mounting platform structure of a composite performance testing device for polytetrafluoroethylene corrugated compensators according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the moving plate structure of a composite performance testing device for polytetrafluoroethylene corrugated compensators according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the mounting frame structure of a composite performance testing device for polytetrafluoroethylene corrugated compensators according to an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the mounting plate structure of a composite performance testing device for polytetrafluoroethylene corrugated compensators according to an embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the movable plate structure of a composite performance testing device for polytetrafluoroethylene corrugated compensators according to an embodiment of the present invention.

[0024] The following are labeled in the diagram: 1. Frame; 2. Oil circulation system; 3. Bearing plate; 4. Support rod; 5. Top plate; 6. Mounting platform; 7. Movable plate; 8. Movable block; 9. Connecting block; 10. Angular displacement sensor; 11. Electronic ruler; 12. First oil cylinder; 13. Moving plate; 14. Mounting plate; 15. Cylinder; 16. Push block; 17. First slider; 18. First slide rail; 19. Push plate; 20. Discharge pipe; 21. Mounting frame; 22. Second oil cylinder; 23. Push plate; 24. Second slider; 25. Second slide rail; 26. Bend plate; 27. Discharge pipe; 28. Screw hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figures 1 to 6 As shown in the figure, a specific embodiment of this utility model provides a composite performance testing device for a polytetrafluoroethylene (PTFE) corrugated compensator, including a frame 1 and an oil circulation system 2 disposed on one side of the frame 1. A bearing plate 3 is fixedly installed on the frame 1, a support rod 4 is fixedly installed on the bearing plate 3, and a top plate 5 is fixedly installed on the support rod 4. A testing device for compensator performance testing is provided between the top plate 5 and the bearing plate 3. By setting up the testing device, mechanical methods can replace manual pressure application to test the compensator. During the test, the pressure and deformation data of the compensator under pressure can be recorded in real time. The testing device includes a mounting platform 6 for fixing the compensator and a movable plate 7 on the top of the bearing plate 3. A movable block 8 is fixedly installed on the movable plate 7, and a connecting block 9 is rotatably connected to the movable block 8. The connecting block 9 is provided with corner positions. The displacement sensor 10, the support plate 3, and the top plate 5 are all equipped with electronic rulers 11. The movable plate 7 is equipped with a discharge pipe 20, and the support plate 3 is equipped with a discharge pipe 27. The oil circulation system 2 is existing technology. It uses a double pump for pressurization and is equipped with a pressure sensor and an electronic throttle valve at the return end to control the constant return pressure. It will not be described in detail. The oil circulation system 2 is connected to the discharge pipe 20 and the discharge pipe 27 through a high-temperature flexible pipe, so that the external oil is filled into the compensator through the discharge pipe 27. The oil circulation system 2 heats the oil and selects an appropriate pressure so that it applies pressure to the compensator after entering the compensator. The oil is then discharged out through the discharge pipe 20 and recirculated through the oil circulation system 2. The temperature and pressure that the compensator withstands during the test can be obtained through the oil circulation system 2.

[0028] like Figures 1 to 6As shown, specifically, both the mounting platform 6 and the movable plate 7 are provided with screw holes 28 extending from the center outwards. During the testing of the compensator, the compensator is placed between the mounting platform 6 and the movable plate 7 and fixed in place using the screw holes 28. Because the screw holes 28 extend from the center outwards, compensators of different sizes can be fitted and installed between the mounting platform 6 and the movable plate 7. A first hydraulic cylinder 12 is fixedly mounted on the top plate 5, and a movable plate 13 is fixedly connected to the bottom end of the first hydraulic cylinder 12. The movable plate 13 is slidably connected to the support rod 4, and is fixedly connected to the electronic ruler 11 mounted on the top plate 5. This allows for testing of the vertical deformation compensation of the compensator. When the first hydraulic cylinder 12 is activated, it drives the bottom moving plate 13 to move, which in turn drives the bottom movable plate 7 to move. The movable plate 7 moves upward, which pulls the bottom compensator to extend upward and deform. During the movement of the moving plate 13, the electronic ruler 11 can move, so the electronic ruler 11 can judge and obtain the extension deformation data of the compensator. When it reaches a certain compensation amount, the first hydraulic cylinder 12 is kept stable, thereby testing its fatigue life under a certain compensation amount. The entire test is carried out under high temperature and pressure conditions of the compensator, which is more in line with the daily working conditions and can achieve real-time synchronous recording of pressure and deformation data during dynamic pressure.

[0029] like Figures 1 to 6 As shown, specifically, a mounting frame 21 is fixedly installed on the support plate 3, a second hydraulic cylinder 22 is fixedly installed on the mounting frame 21, a push plate 23 is fixedly connected to the second hydraulic cylinder 22, and the push plate 23 is fixedly connected to the mounting platform 6. A second slider 24 is fixedly installed at the bottom of the mounting platform 6, a second slide rail 25 is fixedly installed on the mounting frame 21, and a bent plate 26 is fixedly connected to the bottom of the mounting platform 6, and the bent plate 26 is fixedly connected to the electronic ruler 11 on the support plate 3. When performing tests in the lateral direction, the position and height of the movable plate 7 are adjusted by the first hydraulic cylinder 12 to make its position... The height is matched with the height of the top of the compensator and the first cylinder 12 is kept stable, thereby keeping the top of the compensator stable. The second cylinder 22 is activated to push the push plate 23 to move the mounting platform 6. The second slider 24 at the bottom of the mounting platform 6 slides on the second slide rail 25. The movement of the mounting platform 6 causes the bottom part of the compensator to move in the lateral direction. At the same time, the movement of the mounting platform 6 causes the bending plate 26 to move, which causes the electronic ruler 11 on the bearing plate 3 to extend and retract, thereby obtaining displacement data, and thus obtaining the deformation data of the compensator in the lateral direction under high temperature and high pressure.

[0030] like Figures 1 to 6As shown, specifically, a mounting plate 14 is fixedly connected to the bottom end of the movable plate 13, and the mounting plate 14 is fixedly connected to the connecting block 9. A cylinder 15 is fixedly mounted on the mounting plate 14, and a push block 16 is fixedly connected to the cylinder 15. A first slider 17 is fixedly mounted on the push block 16, and a first slide rail 18 is fixedly mounted on the mounting plate 14. A push plate 19 is movably connected between the push block 16 and the movable plate 7. A discharge pipe 20 is provided on the movable plate 7. When performing the compensator deformation tilt angle test, after the compensator is stably installed between the movable plate 7 and the mounting platform 6, the cylinder 15 is activated to drive the push block 16, thereby causing the first slider 17 on the push block 16 to slide on the first slide rail 18. At this time, the moving push block 16 causes the movable plate 7 and the movable block 8 at the bottom end to rotate through the push plate 19. The movable block 8 rotates on the connecting block 9. At the same time, an angle is provided on the connecting block 9. The displacement sensor 10, with its angular displacement sensor 10 shaft connected to the movable block 8, allows the angular displacement sensor 10 to measure the angular displacement change data of the movable plate 7. The rotation of the movable plate 7 causes a change in the top position of the compensator fixed at the bottom. Therefore, under high temperature and high pressure conditions, the angular position change data can be measured in real time, i.e., the rotational deformation data during angular changes can be measured. Thus, during the above process, under high temperature and high pressure conditions, pressure and deformation data can be recorded synchronously in real time, recording the lifespan under different compensation amounts under pressure. Furthermore, the test records of the entire device are tested using the electronic ruler 11 and the angular displacement sensor 10 and transmitted to an external data acquisition system to generate a report, making the entire measurement process more accurate. This process replaces manual pressure testing, resulting in higher testing efficiency.

[0031] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0032] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite performance testing device for polytetrafluoroethylene corrugated compensators, comprising a frame (1) and an oil circulation system (2) disposed on one side of the frame (1), characterized in that, A bearing plate (3) is fixedly installed on the frame (1), a support rod (4) is fixedly installed on the bearing plate (3), and a top plate (5) is fixedly installed on the support rod (4). A testing device for compensator performance testing is provided between the top plate (5) and the support plate (3). The testing device includes a mounting platform (6) for fixing the compensator and a movable plate (7) on the top of the support plate (3). A movable block (8) is fixedly installed on the movable plate (7). A connecting block (9) is rotatably connected to the movable block (8). An angular displacement sensor (10) is provided on the connecting block (9). An electronic ruler (11) is provided on both the support plate (3) and the top plate (5).

2. The composite performance testing device for polytetrafluoroethylene corrugated compensators according to claim 1, characterized in that, A first hydraulic cylinder (12) is fixedly installed on the top plate (5). A movable plate (13) is fixedly connected to the bottom end of the first hydraulic cylinder (12). The movable plate (13) is slidably connected to the support rod (4), and the movable plate (13) is fixedly connected to the electronic ruler (11) installed on the top plate (5).

3. The composite performance testing device for polytetrafluoroethylene corrugated compensators according to claim 2, characterized in that, The bottom end of the movable plate (13) is fixedly connected to the mounting plate (14), and the mounting plate (14) is fixedly connected to the connecting block (9). A cylinder (15) is fixedly installed on the mounting plate (14), and a push block (16) is fixedly connected to the cylinder (15).

4. The composite performance testing device for polytetrafluoroethylene corrugated compensators according to claim 3, characterized in that, The first slider (17) is fixedly installed on the push block (16), the first slide rail (18) is fixedly installed on the mounting plate (14), the push block (16) and the movable plate (7) are movably connected by a push plate (19), and the movable plate (7) is provided with a discharge pipe (20).

5. The composite performance testing device for polytetrafluoroethylene corrugated compensators according to claim 1, characterized in that, An installation frame (21) is fixedly installed on the bearing plate (3), and a second oil cylinder (22) is fixedly installed on the installation frame (21). A push plate (23) is fixedly connected to the second oil cylinder (22), and the push plate (23) is fixedly connected to the mounting table (6).

6. The composite performance testing device for polytetrafluoroethylene corrugated compensators according to claim 5, characterized in that, The bottom end of the mounting platform (6) is fixedly installed with a second slider (24), and the mounting frame (21) is fixedly installed with a second slide rail (25).

7. The composite performance testing device for polytetrafluoroethylene corrugated compensators according to claim 1, characterized in that, The bottom end of the mounting platform (6) is fixedly connected to a bent plate (26), and the bent plate (26) is fixedly connected to an electronic ruler (11) on the support plate (3). The support plate (3) is provided with an inlet pipe (27), and the inlet pipe (27) extends into the mounting platform (6).

8. The composite performance testing device for polytetrafluoroethylene corrugated compensators according to claim 1, characterized in that, Both the mounting platform (6) and the movable plate (7) are provided with screw holes (28) extending from the center to the outside.

Images