Safety valve test platform

Abstract

The invention relates to the technical field of safety valve test platforms, and discloses a safety valve test platform which comprises a test platform body and three clamps connected to the test platform body, the top surface of the test platform body is connected with a limiting assembly, and the limiting assembly comprises three vertical rods connected to the top surface of the test platform body. According to the safety valve test platform, the three vertical rods are arranged at the top of the test platform body, the L-shaped connecting plates are arranged at the tops of the vertical rods through the L-shaped lifting rods, the fixing disc is clamped through the clamping grooves in the multiple L-shaped connecting plates, and therefore the safety valve test platform can be used for testing the safety valve. And the safety valve body is extruded and fixed by a lower pressing disc connected through a spring at the bottom of the fixed disc, so that the safety valve body is pre-fixed, an operator can operate the hydraulic cylinder by loosening the hand, and the test platform body is further more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of safety valve testing platform technology, specifically a safety valve testing platform. Background Technology

[0002] A safety valve is a special valve whose opening and closing element is normally closed under external force. When the pressure of the medium in the equipment or pipeline rises above a specified value, it discharges the medium to the outside of the system to prevent the pressure of the medium in the pipeline or equipment from exceeding the specified value. Safety valves belong to the category of automatic valves and are mainly used on boilers, pressure vessels, and pipelines to control the pressure to not exceed the specified value, playing an important role in protecting personal safety and equipment operation.

[0003] When testing safety valves, safety valve testing platforms are used, such as portable safety valve calibration benches, also known as small safety valve offline testing benches. These portable devices are mainly used for offline testing of safety valves. The safety valve testing bench uses high-pressure air or nitrogen as a medium to test the sealing performance, pressure strength performance, and opening and reseating pressure of the safety valve. The pressure range is 0.3~15Mpa, and the diameter range is 15~150mm. It has a built-in 0.4-grade precision pressure gauge and is mainly suitable for on-site offline calibration of safety valves. The system has the advantages of small size, light weight, and easy portability.

[0004] When using this type of testing platform, first place two sealing flanges with sealing rings in the center of the three clamps. Then, place the safety valve on the sealing flanges and pull the clamps closer to the safety valve. At this point, because the safety valve is quite tall and lacks a top support component, the operator needs to support the safety valve with one hand to prevent the bottom of the safety valve from loosening and causing a poor seal. Then, the other hand operates the hydraulic pump to lift the sealing flange, causing the safety valve to rise and be clamped and limited by the clamps at the bottom periphery. Once the safety valve is fixed, its sealing performance and other tests can be performed. Therefore, based on the above, the existing testing platform has the following shortcomings in use: In the existing testing platform, during the clamping process of the safety valve, due to the high height of the safety valve and the lack of supporting and limiting components at the top, the operator needs to use one hand to support the safety valve to prevent the bottom of the safety valve from loosening and causing a loose seal with the sealing flange, while using the other hand to operate the hydraulic pump. This operation method is not convenient. On the one hand, when the operator operates the hydraulic cylinder, the other hand supporting the safety valve is prone to shaking, which may cause the bottom of the safety valve to loosen. On the other hand, it also causes inconvenience for the operator.

[0005] Patent CN216669255U discloses a safety valve test bench, including a chuck. The chuck has a transmission chamber inside and a fixed transmission chamber on the side of the chuck away from the transmission chamber. A first fixed shaft is disposed inside the chuck. A second fixed shaft is fixedly installed inside the first driven gear. A second driven gear is fixedly installed on the outer wall of the second fixed shaft below the first driven gear. A toothed plate is meshed on the outer wall of the second driven gear. A first clamping block is fixedly installed on the toothed plate at the end away from the first fixed shaft. By pressing a crank, the driving gear drives the first driven gear to rotate, and simultaneously the second fixed shaft rotates with the first driven gear. This causes the first clamping block to push and squeeze the safety valve, pushing it towards the second clamping block. By setting multiple clamping mechanisms under the action of the driving gear, multiple safety valves can be clamped simultaneously. Although the above device can solve the problem of clamping multiple safety valves simultaneously, it still has the problem of inconvenient operation. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a safety valve testing platform to solve the problems mentioned in the background art, enabling the safety valve to be pre-fixed before being fixed by the testing platform.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a safety valve test platform, comprising a test platform body and three clamps connected to the test platform body, wherein a limit assembly is connected to the top surface of the test platform body; The limiting assembly includes three vertical rods connected to the top surface of the test platform body. The bottom of the vertical rods is fixedly connected to the base. An L-shaped lifting rod is slidably connected inside the vertical rod. An L-shaped connecting plate is fixedly connected to the top surface of one end of the L-shaped lifting rod. A clamping groove is opened at the end of the L-shaped connecting plate. A fixed plate is clamped and connected to the middle position of the three L-shaped connecting plates through the clamping groove. Multiple springs are fixedly connected to the bottom surface of the fixed plate. A pressure plate is fixedly connected to the bottom end of the springs. The pressure plate is located at the center of the three clamps. Connecting blocks are fixedly connected to both sides of the pressure plate. Moving rods are slidably connected inside the connecting blocks. The tops of the two moving rods pass through the fixed plate, and horizontal rods are fixedly connected to the inner side of their ends. A lifting assembly is connected to the center of the horizontal rod. A moving assembly is connected to the bottom of one of the vertical rods.

[0008] Furthermore, the lifting assembly includes a large threaded rod fixedly connected to the top of the fixed plate, the large threaded rod being slidably connected to the center position of the transverse rod, and a threaded receiving ring being threadedly connected to the outer side of the large threaded rod, the top surface of the threaded receiving ring being in contact with the bottom surface of the transverse rod.

[0009] Furthermore, the moving component includes a slider fixedly connected to the bottom of a foot of one of the vertical rods. The top surface of the test platform body has a transverse groove corresponding to the position of the slider. A side block is fixedly connected to one side of the foot, and an insert block is slidably connected inside the side block. The top surface of the test platform body has two slots corresponding to the insert blocks, and the slots are located on one side of the transverse groove.

[0010] Furthermore, a groove is provided on the outer wall of the vertical rod, and a small threaded rod that is fixedly connected to the outer wall of the L-shaped lifting rod is slidably connected in the groove. A threaded ring is threadedly connected to the outer side of the small threaded rod at one end outside the groove, and the inner wall of the threaded ring abuts against the outer wall of the vertical rod.

[0011] Furthermore, the L-shaped connecting plates at the top of the vertical rods of the two additional feet, which are fixedly connected to the top surface of the test platform body, are connected to the fixing plate by bolts.

[0012] Furthermore, handles are fixedly connected to both sides of the outer wall of the threaded receiving ring.

[0013] Furthermore, scale lines are provided on the outer wall of the vertical rod.

[0014] Furthermore, the outer wall of the transverse bar is fitted with two symmetrically arranged anti-slip sleeves.

[0015] Furthermore, a padding layer is attached to the bottom surface of the pressure plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This type of safety valve testing platform features three vertical rods at the top of the platform body, with L-shaped connecting plates attached to the top of the rods via L-shaped lifting rods. The fixing plate is secured by clamping grooves on multiple L-shaped connecting plates, and the safety valve body is fixed by the pressure of a spring-connected lower pressure plate at the bottom of the fixing plate. This pre-fixation of the safety valve body allows operators to freely operate the hydraulic cylinder, further enhancing the ease of use of the testing platform. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention in a partially unfolded state; Figure 3 This is a three-dimensional structural diagram of the vertical rod, L-shaped lifting rod, and scale lines of the present invention; Figure 4 This is a three-dimensional structural diagram of the fixed plate and the lower pressure plate of the present invention; Figure 5 This is a schematic diagram of the structure of the large threaded rod and threaded receiving ring of the present invention; Figure 6This is a three-dimensional structural diagram of the movable rod and the transverse rod of the present invention; Figure 7 This is a three-dimensional structural diagram of a partial state of the vertical rod of the present invention.

[0018] In the diagram: 1. Test platform body; 101. Horizontal groove; 102. Slot; 103. Safety valve body; 2. Fixture; 3. Foot; 4. Vertical rod; 5. Slide groove; 6. L-shaped lifting rod; 7. L-shaped connecting plate; 8. Fixed plate; 9. Lower pressure plate; 10. Pad layer; 11. Horizontal rod; 12. Large threaded rod; 13. Moving rod; 14. Anti-slip sleeve; 15. Threaded receiving ring; 16. Bolt; 17. Connecting block; 18. Scale line; 19. Clamping groove; 20. Threaded ring; 21. Small threaded rod; 22. Handle; 23. Spring; 24. Slider; 25. Side block; 26. Insert block. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Please see Figure 1-7 A safety valve test platform includes a test platform body 1 and three clamps 2 connected to the test platform body 1, and a limit assembly is connected to the top surface of the test platform body 1. The limiting assembly includes three vertical rods 4 connected to the top surface of the test platform body 1. The bottom of the vertical rods 4 is fixedly connected to the foot 3. An L-shaped lifting rod 6 is slidably connected inside the vertical rods 4. An L-shaped connecting plate 7 is fixedly connected to the top surface of one end of the L-shaped lifting rod 6. A clamping groove 19 is opened at the end of the L-shaped connecting plate 7. A fixed plate 8 is clamped and connected to the middle position of the three L-shaped connecting plates 7 through the clamping groove 19. A plurality of springs 23 are fixedly connected to the bottom surface of the fixed plate 8. A pressure plate 9 is fixedly connected to the bottom end of the springs 23. The pressure plate 9 is located at the center of the three clamps 2. Connecting blocks 17 are fixedly connected to both sides of the pressure plate 9. Moving rods 13 are slidably connected inside the connecting blocks 17. The tops of the two moving rods 13 pass through the fixed plate 8, and a horizontal rod 11 is fixedly connected to the inner side of the end. A lifting assembly is connected to the center of the horizontal rod 11. A moving assembly is connected to the bottom of one of the vertical rods 4.

[0021] like Figure 1As shown, the safety valve test platform of this invention is similar in structure to existing safety valve test benches. For example, patent CN216669255U discloses a safety valve test bench. The main improvement of this invention is that the safety valve can be pre-fixed before the test platform is used to fix the safety valve. When the user places the safety valve body 103 on the sealing flange between the three clamps 2, the moving rods 13 on both sides of the fixed plate 8 can be lowered by the provided components. After it is lowered to a certain height, the bottom surface of the lower pressure plate 9 will abut against the top of the safety valve body 103 under the force of the spring 23. Then, the operator can release the hand and operate the manual hydraulic cylinder to move the sealing flange upward, thereby moving the safety valve body 103 upward. The clamp 2 can just fix the safety valve body 103. When the safety valve body 103 moves upward, the lower pressure plate 9 will be squeezed. Under the buffer of the spring 23, the fixed plate 8 will not be obstructed.

[0022] By setting three vertical rods 4 on the top of the test platform body 1, and setting L-shaped connecting plates 7 on the top of the vertical rods 4 via L-shaped lifting rods 6, the fixing plate 8 is snapped into place using the clamping grooves 19 on the multiple L-shaped connecting plates 7. The safety valve body 103 is pre-fixed by the pressing and fixing of the lower pressure plate 9 connected by spring 23 at the bottom of the fixing plate 8. This allows the operator to release their hands to operate the hydraulic cylinder, further making the use of the test platform body 1 more convenient.

[0023] As a preferred technical solution of the present invention, the lifting component includes a large threaded rod 12 fixedly connected to the top of the fixed plate 8, the large threaded rod 12 being slidably connected to the center position of the transverse rod 11, and a threaded receiving ring 15 being threadedly connected to the outer side of the large threaded rod 12, the top surface of the threaded receiving ring 15 being in contact with the bottom surface of the transverse rod 11.

[0024] Specifically, when the safety valve body 103 rises to a high height, its top will cause the lower pressure plate 9 to move upward, and the spring 23 will also be squeezed. At this time, when the lower pressure plate 9 moves upward, the connecting blocks 17 on both sides will slide on the outside of the horizontal rod 11, so the lower pressure plate 9 will not damage the safety valve body 103. When it is necessary to remove the safety valve body 103, simply lift the horizontal rod 11, causing the moving rods 13 on both sides to slide upward on both sides of the fixed plate 8, and at the same time, causing the lower pressure plate 9 to move upward and disengage from the top of the safety valve body 103. Then rotate the threaded receiving ring 15, so that the outside of the large threaded rod 12 rises. After rising to a certain position, simply align the bottom surface of the horizontal rod 11 with the top surface of the threaded receiving ring 15. At this time, the lower pressure plate 9 is completely disengaged from the top of the safety valve body 103, with a large gap. At this time, the moving component at the lower end of the foot 3 at the bottom of the outer vertical rod 4 can be used to move the vertical rod 4 to one side, so that the safety valve body 103 can be easily removed.

[0025] As a preferred embodiment of the present invention, the moving component includes a slider 24 fixedly connected to the bottom of a foot 3 at the bottom of one of the vertical rods 4. A transverse groove 101 corresponding to the position of the slider 24 is opened on the top surface of the test platform body 1. A side block 25 is fixedly connected to one side of the foot 3. An insert block 26 is slidably connected inside the side block 25. Two slots 102 corresponding to the insert blocks 26 are opened on the top surface of the test platform body 1. The slots 102 are located on one side of the transverse groove 101.

[0026] Specifically, when it is necessary to remove the safety valve body 103, and after the lower pressure plate 9 is completely disengaged from the safety valve body 103, the insert block 26 can be lifted to disengage it from the slot 102. Then, the vertical rod 4 is moved to drive the slider 24 at the bottom of the base 3 to slide into the horizontal groove 101, and to drive the L-shaped connecting plate 7 at the top of the L-shaped lifting rod 6 to disengage from one side of the fixed plate 8. At this time, the safety valve body 103 can be removed. When the slider 24 slides to the other end of the horizontal groove 101, the insert block 26 can be directly inserted into the other slot 102, ensuring that the vertical rod 4 will not move again, so that the staff can easily take out the safety valve body 103.

[0027] As a preferred technical solution of the present invention, a groove 5 is provided on the outer wall of the vertical rod 4. A small threaded rod 21, which is fixedly connected to the outer wall of the L-shaped lifting rod 6, is slidably connected in the groove 5. A threaded ring 20 is threadedly connected to the outer side of the small threaded rod 21 located outside the groove 5. The inner wall of the threaded ring 20 abuts against the outer wall of the vertical rod 4.

[0028] Specifically, when the height of the safety valve body 103 changes, the threaded ring 20 can be rotated to separate the inner wall of the threaded ring 20 from the outer wall of the vertical rod 4. Then, the L-shaped lifting rod 6 is slid to rise or fall within the vertical rod 4, which in turn drives the L-shaped connecting plate 7 and the fixed plate 8 at the top to rise or fall, thereby causing the lower pressure plate 9 to rise or fall, thus enabling the application of more specifications of safety valve bodies 103.

[0029] As a preferred embodiment of the present invention, the L-shaped connecting plates 7 at the top of the vertical rods 4 of the two base feet 3 that are fixedly connected to the top surface of the test platform body 1 are connected to the fixed plate 8 by bolts 16.

[0030] Specifically, the use of bolts 16 allows the L-shaped connecting plate 7 to be easily installed and disassembled with the fixed plate 8, facilitating future maintenance.

[0031] As a preferred embodiment of the present invention, handles 22 are fixedly connected to both sides of the outer wall of the threaded receiving ring 15. The handles 22 facilitate the rotation of the threaded receiving ring 15 by the operator.

[0032] As a preferred embodiment of the present invention, the outer wall of the vertical rod 4 is provided with scale lines 18. The scale lines 18 allow for easier measurement when moving the L-shaped lifting rod 6 up or down, thus facilitating the adjustment of the height of the other two L-shaped lifting rods 6.

[0033] As a preferred embodiment of the present invention, the outer wall of the transverse bar 11 is fitted with two symmetrically arranged anti-slip sleeves 14. The anti-slip sleeves 14 facilitate the lifting of the transverse bar 11.

[0034] As a preferred embodiment of the present invention, a pad 10 is snapped onto the bottom surface of the lower pressure plate 9. The pad 10 prevents the lower pressure plate 9 from squeezing the safety valve body 103 and causing damage, while the pad 10 can be snapped onto the lower pressure plate 9.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety valve testing platform, comprising a testing platform body (1) and three clamps (2) connected to the testing platform body (1), characterized in that, The test platform body (1) has a limit assembly connected to its top surface; The limiting assembly includes three vertical rods (4) connected to the top surface of the test platform body (1). The bottom of the vertical rods (4) is fixedly connected to the foot (3). An L-shaped lifting rod (6) is slidably connected inside the vertical rods (4). An L-shaped connecting plate (7) is fixedly connected to the top surface of one end of the L-shaped lifting rod (6). A clamping groove (19) is opened at the end of the L-shaped connecting plate (7). A fixed plate (8) is clamped and connected to the middle position of the three L-shaped connecting plates (7) through the clamping groove (19). Multiple springs are fixedly connected to the bottom surface of the fixed plate (8). (23) A lower pressure plate (9) is fixedly connected to the bottom end of the spring (23). The lower pressure plate (9) is located at the center of the three clamps (2). Connecting blocks (17) are fixedly connected to both sides of the lower pressure plate (9). Moving rods (13) are slidably connected inside the connecting blocks (17). The tops of the two moving rods (13) pass through the fixed plate (8), and the inner side of the ends is fixedly connected to a horizontal rod (11). A lifting component is connected to the center of the horizontal rod (11), and a moving component is connected to the bottom of one of the vertical rods (4).

2. The safety valve testing platform according to claim 1, characterized in that, The lifting assembly includes a large threaded rod (12) fixedly connected to the top of the fixed plate (8). The large threaded rod (12) is slidably connected to the center position of the transverse rod (11), and a threaded receiving ring (15) is threadedly connected to the outer side of the large threaded rod (12). The top surface of the threaded receiving ring (15) is in contact with the bottom surface of the transverse rod (11).

3. A safety valve testing platform according to claim 1 or 2, characterized in that, The moving component includes a slider (24) at the bottom of a foot (3) fixedly connected to the bottom of one of the vertical rods (4). The top surface of the test platform body (1) is provided with a transverse groove (101) corresponding to the position of the slider (24). A side block (25) is fixedly connected to one side of the foot (3). An insert (26) is slidably connected inside the side block (25). The top surface of the test platform body (1) is provided with two slots (102) corresponding to the insert (26). The slots (102) are located on one side of the transverse groove (101).

4. A safety valve testing platform according to claim 1 or 2, characterized in that, The outer wall of the vertical rod (4) is provided with a groove (5). A small threaded rod (21) is slidably connected in the groove (5) and fixedly connected to the outer wall of the L-shaped lifting rod (6). A threaded ring (20) is threadedly connected to the outer side of the small threaded rod (21) located outside the groove (5). The inner wall of the threaded ring (20) abuts against the outer wall of the vertical rod (4).

5. A safety valve testing platform according to claim 1 or 2, characterized in that, The other two feet (3) fixedly connected to the top surface of the test platform body (1), the top vertical rod (4), and the top L-shaped connecting plate (7) are connected to the fixed plate (8) by bolts (16).

6. A safety valve testing platform according to claim 2, characterized in that, The threaded receiving ring (15) has handles (22) fixedly connected to both sides of its outer wall.

7. A safety valve testing platform according to claim 1 or 2, characterized in that, The outer wall of the vertical rod (4) is provided with scale lines (18).

8. A safety valve testing platform according to claim 1 or 2, characterized in that, The outer wall of the transverse bar (11) is fitted with two symmetrically arranged anti-slip sleeves (14).

9. A safety valve testing platform according to claim 1 or 2, characterized in that, The bottom surface of the pressure plate (9) is fitted with a pad (10).

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