Safety valve verification detection platform convenient for multi-caliber safety valve detection

Abstract

The invention discloses a safety valve verification detection platform convenient for multi-caliber safety valve detection, and relates to the technical field of safety valve verification, and the safety valve verification detection platform is characterized by comprising a mounting rack, a base, a clamping seat, a second rack mounted on the clamping seat through a locking mechanism, and a switching turntable rotatably arranged on the mounting rack, when the power piece drives the clamping base to move, the second rack is meshed with an incomplete gear on the switching rotary disc, the switching rotary disc is driven to rotate so as to switch different types of safety valve connectors, meanwhile, when the transverse plate abuts against the surface of a safety valve pipe opening through the triggering mechanism, locking of the second rack by the locking mechanism is relieved, and the safety valve connectors can be switched. The detection platform can automatically adapt to safety valves with different calibers and switch the safety valves with the different calibers for verification, connectors do not need to be manually selected and matched, verification efficiency and convenience are improved, and the detection platform has a good use effect.

Description

Technical Field

[0001] The present invention relates to the technical field of safety valve calibration, and more particularly to a safety valve calibration and testing platform which is convenient for testing multi-caliber safety valves. Background Art

[0002] Safety valve is an important safety device, widely used in various pressure vessels and piping systems. It is mainly used to automatically open and release part of the medium when the internal pressure of the system exceeds the preset value, so as to reduce the system pressure and prevent safety accidents such as explosion or leakage caused by excessive pressure. The reliability and accuracy of the safety valve are directly related to the safe operation of the entire system. Therefore, regular calibration and maintenance of the safety valve is particularly important.

[0003] Safety valve calibration refers to a series of tests and adjustments to the safety valve to ensure that it can open and close accurately and reliably in actual operation. The calibration process usually includes checking the safety valve's sealing, opening pressure, return pressure and other key parameters to ensure that these parameters meet the design requirements and usage standards. Through calibration, problems with the safety valve can be discovered and repaired in a timely manner to ensure its long-term stable operation, thereby protecting the safety of the entire system.

[0004] However, in the existing technology, there are some obvious shortcomings in the calibration of safety valves, especially when calibrating multi-caliber safety valves. Since safety valves of different specifications require connectors of different specifications for testing, the calibrator often needs to carry a toolbox containing connectors of various specifications, which not only increases the complexity and burden of the calibration work, but may also cause the calibration to fail smoothly due to mismatch or omission of connector specifications.

[0005] Therefore, in order to solve the above technical problems, the present application proposes a safety valve calibration and testing bench that is convenient for testing multi-caliber safety valves. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention aims to provide a safety valve calibration and testing bench that is convenient for testing multi-caliber safety valves.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a safety valve calibration and testing platform conveniently used for testing multi-caliber safety valves, comprising a mounting frame and a base disposed on the mounting frame, a bracket for placing the safety valve to be calibrated further disposed on the base, and a clamping seat further mounted on the mounting frame via a power member. The safety valve calibration and testing platform conveniently used for testing multi-caliber safety valves further comprises: The second rack is mounted on the clamping seat through a locking mechanism, and the switching dial set on the mounting frame is rotated. When the clamping seat is driven by the power member to move toward the safety valve, the second rack is engaged with the incomplete gear set on the switching dial; The horizontal plate is installed on the clamp seat through a trigger mechanism, and the trigger mechanism is also connected to the locking mechanism. When the clamp seat moves close to the safety valve and the horizontal plate abuts against the surface of the safety valve pipe mouth, the locking mechanism is driven by the trigger mechanism to release the lock of the rack 2, thereby realizing the separation action of the rack 2 and the incomplete gear in the meshing state.

[0008] Preferably, the locking mechanism includes a mounting plate arranged on the clamping seat, and the second rack is arranged on the mounting plate through a second spring. When the locking mechanism locks the second rack, the second spring is in a stretched and deformed state.

[0009] Preferably, the locking mechanism also includes a U-shaped block rotatably set on rack 2, and a forward and reverse screw rod rotatably set on the mounting plate. The forward and reverse screw rods are threadedly connected to the U-shaped block, and a connecting rod is also rotatably installed at the groove position of the U-shaped block, and the other end of the connecting rod is fixed to the mounting frame.

[0010] Preferably, the rack bar 2 is intermittently provided with special-shaped teeth at the position of the teeth, and the special-shaped teeth protrude outward to form a protrusion.

[0011] Preferably, the trigger mechanism includes a frame arranged on the clamping seat, the cross plate is rotatably arranged on the frame, and a cross-moving member connected to the cross plate is arranged in the frame, and a driving rod is also installed on the cross-moving member, and the end of the driving rod is connected to the forward and reverse screw rods through a continuous driving member. After the cross plate is abutted against and deflected from the surface of the safety valve pipe mouth, a relative displacement is generated between the cross plate, the driving rod and the frame through the cross-moving member, and the continuous driving member is used to maintain power transmission when the driving rod and the forward and reverse screw rods generate a deflection angle.

[0012] Preferably, the continuous driving member is a universal joint and a telescopic rod, the universal joint is arranged between the driving rod and the telescopic rod, and the end of the telescopic rod away from the universal joint is transmission-connected to the forward and reverse screw rods.

[0013] Preferably, the transverse moving member includes a slide rail opened in the frame, a protruding groove is provided in the slide rail, an arc-shaped piece is installed on the surface of the protruding groove through a spring, the concave side of the arc-shaped piece is in contact with a cam, and the cam is provided on the outer surface of the driving rod.

[0014] Preferably, the U-shaped block is further provided with an extension section, a reset piece is provided at a position on the mounting frame corresponding to the extension section, and a vertical rod is further provided at a position on the mounting frame corresponding to the horizontal plate.

[0015] Preferably, the switching turntable is provided with a plurality of safety valve connectors of different models, and the plurality of safety valve connectors are arranged along an arc.

[0016] Preferably, the safety valve calibration and testing bench convenient for testing multi-caliber safety valves further comprises a clamping mechanism, which is arranged on a base. After the clamping base moves close to the safety valve and causes the cross plate to abut against the surface of the safety valve pipe orifice, the clamping mechanism is used to insert the safety valve into the corresponding safety valve interface.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. Automatic adaptation to multi-caliber safety valves: Through the meshing of rack 2 and the incomplete gear, and the design of multiple safety valve connectors of different models on the switching turntable, automatic adaptation and calibration of safety valves of different calibers are achieved. There is no need to manually select connectors, and connectors of different specifications are automatically switched, which reduces manual operation time and improves the overall efficiency of safety valve calibration.

[0018] 2. Rack 2 is intermittently provided with special-shaped teeth at specific positions. The outward protrusion of the special-shaped teeth forms a protrusion. This design makes it possible for the incomplete gear to rotate to the tooth-missing position when continuously calibrating safety valves of the same specification, and rack 2 will not cause the incomplete gear to continue rotating, thereby keeping the specification of the connector from being switched. At the same time, when calibrating the next smaller safety valve, the special-shaped teeth can mesh with the incomplete gear again, driving the switching dial to rotate to achieve the switching of the connector, thereby enhancing the adaptability of the calibration bench to safety valves of different specifications.

[0019] The design of the transverse moving part can prevent the cross plate from interfering with the switching dial in the central position. Specifically, when the cross plate contacts the surface of the safety valve pipe orifice and triggers rotation, the cross plate is stopped by the transverse moving part, while the shelf continues to move under the drive of the clamp seat. At this time, a relative displacement occurs between the cross plate and the shelf, avoiding motion interference and facilitating the installation of various components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic structural diagram of the present invention as a whole; Figure 2 It is a schematic diagram of the structure of the present invention from another angle and with a partial enlargement; Figure 3 It is a schematic diagram of a local structure of the present invention; Figure 4 This is a schematic diagram of the structure of the third angle of the entire invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure enlarged in the middle; Figure 6 Schematic diagram of the structure of the trigger mechanism of the present invention; Figure 7 It is a schematic structural diagram of the entire locking mechanism of the present invention; Figure 8 It is a structural schematic diagram of the cross section of the rack in the present invention; Figure 9 Schematic diagram of the structure of rack 2 and incomplete gear in the present invention; Figure 10 It is a structural schematic diagram of the switching turntable in the present invention.

[0021] 1. Mounting frame; 2. Bracket; 21. Base; 22. Active disk; 23. Placement disk; 24. Toothed disk; 25. Curved groove; 26. Limiting track; 27. Driving block; 28. Clamping piece; 29. ​​Rack 1; 3. Switching turntable; 31. Incomplete gear; 4. Clamping seat; 5. Rack 2; 51. Special-shaped teeth; 6. Horizontal plate; 61. Driving rod; 62. Shelf; 63. Universal joint; 64. Telescopic rod; 65. Slide rail; 66. Spring 1; 67. Arc-shaped piece; 68. Cam; 7. Reset piece; 8. U-shaped block; 81. Spring 2; 82. Mounting plate; 83. Connecting rod; 84. Extension section; 85. Forward and reverse screw rod; 9. Vertical rod. DETAILED DESCRIPTION

[0022] like Figure 1-10 As shown, the present invention provides a safety valve calibration and testing platform that is convenient for testing multi-caliber safety valves, including a mounting frame 1 and a base 21 arranged on the mounting frame 1, a bracket 2 for placing the safety valve to be calibrated is also provided on the base 21, and a clamping seat 4 is also installed on the mounting frame 1 through a power component, and the above constitutes a basic workbench for calibrating the safety valve. When the safety valve needs to be calibrated, the safety valve to be calibrated can be placed on the bracket 2. A hydraulic system and an air intake system are also provided on the safety valve calibration and testing platform. After the safety valve is installed, the safety valve is pressurized by the hydraulic system so that it can be fixed on the mounting frame 1, and then the inside of the safety valve is pressurized by the air intake system to realize the calibration operation of the safety valve. This is the existing technology for calibrating the safety valve, and the details will not be repeated.

[0023] In order to improve the convenience of safety valve calibration, the safety valve calibration test bench for multi-caliber safety valves also includes: By means of the rack 2 5 mounted on the clamping seat 4 through the locking mechanism and the switching turntable 3 arranged on the mounting frame 1, when the clamping seat 4 is driven by the power member to move close to the direction of the safety valve, the rack 2 5 is engaged with the incomplete gear 31 arranged on the switching turntable 3. The power member used here is generally set as a hydraulic telescopic device, which is also the prior art and will not be described in detail. When the clamping seat 4 is moved close to the direction of the safety valve through the power member, the clamping seat 4 drives the rack 2 5 to move through the locking mechanism until the rack 2 5 is engaged with the incomplete gear 31, thereby causing the incomplete gear 31 to rotate, and at this time the switching turntable 3 rotates.

[0024] A transverse plate 6 is also provided on the clamping seat 4 through a trigger mechanism, and the trigger mechanism is also connected to the locking mechanism. When the clamping seat 4 moves toward the direction of the safety valve and the transverse plate 6 abuts against the surface of the safety valve pipe mouth, the trigger mechanism drives the locking mechanism to release the lock of the rack 2 5, thereby realizing the separation action of the rack 2 5 and the incomplete gear 31 in the meshing state. When the clamping seat 4 moves toward the safety valve under the action of the power part, the transverse plate 6 abuts against the outer surface of the valve mouth of the safety valve placed on the bracket 2. At this time, the locking mechanism releases the lock of the rack 2 5 through the trigger mechanism, and the rack 2 5 is separated from the incomplete gear 31. At this time, the switching turntable 3 stops rotating.

[0025] It should be noted here that a plurality of safety valve connectors of different models are provided on the switching turntable 3, and the plurality of safety valve connectors are arranged along an arc. A single switching turntable 3 is provided with safety valve connectors of different models. When the clamp seat 4 is moved close to the safety valve by the power member, the cross plate 6 moves synchronously. During the movement of the cross plate 6, the rack 2 5 also moves synchronously until the rack 2 5 engages with the incomplete gear 31, and the incomplete gear 31 rotates, thereby causing the switching turntable 3 to rotate, so that the switching of safety valves of different models on the switching turntable 3 can be realized.

[0026] In order to achieve the above effect, it should be noted that during initial use, the largest-sized connector on the switching dial 3 needs to be aligned with the valve port position of the safety valve, and then the power part is started to move the clamp seat 4 toward the direction close to the safety valve. It should be noted here that when the horizontal plate 6 on the clamp seat 4 moves to the position of the maximum-sized caliber of this type of safety valve, the rack 2 5 will just engage with the incomplete gear 31. That is to say, if the valve port caliber of the safety valve placed on the bracket 2 at this time is just the maximum valve port specification of this type of safety valve, the horizontal plate 6 will be against the outer surface of the valve port of the safety valve. At this time, the locking mechanism will be directly unlocked to the rack 2 5 through the trigger mechanism, and the rack 2 5 will not engage with the incomplete gear 31, and the switching dial 3 will not rotate. At this time, the switching dial 3 will not rotate, so that the largest-sized connector on the switching dial 3 will not change. At this time, the largest-sized safety valve corresponds to the largest-sized connector.

[0027] If the safety valve placed on the bracket 2 is one size or several sizes smaller than the maximum size, the cross plate 6 will move a longer distance and then abut against the outer surface of the valve port of the safety valve with the smaller size. In this process, the rack 2 5 drives the incomplete gear 31 to rotate the switching dial 3, so that the switching dial 3 rotates to the connector position of the valve port size corresponding to the safety valve.

[0028] It should be noted here that, since the specifications of the safety valves are standardized, the differences between the specifications are fixed values. That is to say, if the specifications of the safety valves placed on the bracket 2 are changed from the largest specification to the next-level specification, and the next-level specification is, the moving distance when the horizontal plate 6 abuts against the outer surface of their valve ports is regular. Therefore, at this time, it is only necessary to set the positions of the various connectors on the switching turntable 3. The specific setting needs to meet the following requirements: when the horizontal plate 6 abuts against the outer surface of the valve port of the largest safety valve, the rack 2 5 and the incomplete gear 31 are in a state of being about to engage, and ... When the safety valve of the next-level specification is used, when the horizontal plate 6 moves, that is, the distance from the outer surface position of the valve port of the safety valve of the largest specification to the outer surface position of the valve port of the safety valve of the next-level specification is a fixed value. When this distance causes the rack 2 5 to move, the incomplete gear 31 will be rotated to cause the switching turntable 3 to rotate one position, that is, just rotate to the position of the connector of the next-level specification. Similarly, the positions of the connectors of different specifications on the switching turntable 3 can be set. This can be obtained through simple calculations or experiments by those skilled in the art, and the details will not be repeated here.

[0029] It should also be noted that when placing the safety valves to be calibrated, they need to be placed from large to small specifications, that is, the large-diameter safety valves should be calibrated first, and then the small-diameter safety valves should be calibrated. This is to prevent the problem that after the small-diameter safety valves are calibrated first, the switching dial 3 cannot be switched to the large-diameter safety valve connector, which affects the overall use.

[0030] It should also be noted that when calibrating safety valves of different specifications, in order to be able to calibrate multiple safety valves of the same specification, the rack 2 5 is intermittently provided with special-shaped teeth 51 at the position of the teeth, and the special-shaped teeth 51 protrude outward to form a protrusion, see Figure 9, this type of rack 2 5 cooperates with the incomplete gear 31. At this time, taking the calibration of the safety valve of the next specification compared to the largest specification as an example, the power piece moves the cross plate 6 to abut the outer surface of the valve port of the safety valve being calibrated at this time. At this time, driven by the rack 2 5, the incomplete gear 31 rotates to rotate the switching turntable 3, so that the next-level connector is aligned with the valve port position of the safety valve. At this time, due to the mutual cooperation of the trigger mechanism and the locking mechanism, the rack 2 5 is separated from the incomplete gear 31, and the switching turntable 3 no longer rotates. Then, the hydraulic system on the calibration test bench is used to connect the air intake system to the valve port of the safety valve through the connector, and then the calibration operation is carried out. After the calibration is completed, the safety valve is unlocked by the hydraulic system, and the clamp seat 4 is restored to its initial position by the power piece. Then, when the next safety valve of this specification is calibrated, the power is started again. The above steps are exactly the same, except that when the rack 25 moves to the position where it meshes with the incomplete gear 31, the incomplete gear 31 rotates to the tooth-missing position due to the previous drive of the rack 25. At this time, the rack 25 will not cause the incomplete gear 31 to rotate, and the switching dial 3 will not switch. In this way, the design of the incomplete gear 31 can keep the specifications of the connector from being switched when the safety valves of the same specification are continuously calibrated. When calibrating the next safety valve of a smaller specification, since the special-shaped teeth 51 are intermittently provided on the rack 25, when the cross plate 6 moves to a farther distance, the rack 25 will also move a farther distance. In this way, the special-shaped teeth 51 will mesh with the teeth behind the tooth-missing position on the incomplete gear 31 again, thereby rotating the incomplete gear 31 again, and rotating the switching dial 3 again to achieve the switching of the connector.

[0031] When calibrating safety valves of different specifications, there is no need to carry a tool box with connectors of different specifications. Instead, the connectors of different specifications can be directly integrated into the switching turntable 3. After the safety valve is placed on the bracket 2, when the clamp 4 is moved close to the safety valve by the power piece, the provided rack 2 5 and the incomplete gear 31 can automatically switch the connectors of different specifications on the switching turntable 3, and automatically switch the connectors of corresponding specifications for safety valves of different specifications. There is no need for manual selection, and there is no need for an additional tool box for placing the connectors. The overall use is more convenient, and when continuously calibrating safety valves of the same specification, the specifications of the connectors can also be automatically maintained without manual operation, which has a better use effect.

[0032] In one embodiment of the present invention, the locking mechanism includes a mounting plate 82 provided on the clamping seat 4, and the rack 2 5 is provided on the mounting plate 82 by a spring 2 81. When the locking mechanism locks the rack 2 5, the spring 2 81 is in a pulled-up deformed state. In this way, when the locking mechanism unlocks the rack 2 5, the spring 2 81 will restore its deformation, thereby moving the rack 2 5 closer to the mounting plate 82, thereby disengaging the rack 2 5 from the incomplete gear 31. Since the spring 2 81 is initially in a deformed state, after the locking mechanism unlocks the rack 2 5, the spring 2 81 can quickly recover, thereby allowing the rack 2 5 to quickly disengage from the incomplete gear 31.

[0033] When rack 2 5 is locked, the locking mechanism also includes a U-shaped block 8 rotatably arranged on rack 2 5, and a forward and reverse screw rod 85 rotatably arranged on the mounting plate 82. The forward and reverse screw rod 85 is threadedly connected to the U-shaped block 8, and a connecting rod 83 is also rotatably installed at the groove position of the U-shaped block 8. The other end of the connecting rod 83 is fixed to the mounting frame 1. The trigger mechanism includes a frame 62 arranged on the clamp seat 4. The cross plate 6 is rotatably arranged on the frame 62, and a transverse member connected to the cross plate 6 is provided in the frame 62, and a driving rod 61 is also installed on the transverse member. The end of the driving rod 61 is connected to the forward and reverse screw rod 85 through a continuous driving member. After the cross plate 6 is abutted against the surface of the safety valve pipe orifice and deflected, the cross plate 6 and the driving rod 61 and the frame 62 are relative to each other through the transverse member. The continuous driving member is used to maintain power transmission when the driving rod 61 and the forward and reverse screw rod 85 produce a deflection angle.

[0034] When the cross plate 6 abuts against the outer surface of the valve port of the safety valve, the cross plate 6 rotates due to the force applied, and the forward and reverse screw rods 85 are driven to rotate by the transverse moving member, the driving rod 61 and the continuous driving member. When the forward and reverse screw rods 85 rotate, the U-shaped block 8 is deformed, the groove spacing of the U-shaped block 8 increases, and the clamping state of the connecting rod 83 is released. At this time, the U-shaped block 8 can rotate relative to the connecting rod 83, and the spring 2 81 returns to its original position, so that the rack 2 5 is disengaged from the incomplete gear 31.

[0035] It should be noted here that, after the cross plate 6 is resisted by the outer surface of the valve port of the safety valve and has generated a certain rotation, the clamping force of the U-shaped block 8 on the connecting rod 83 can be released through the forward and reverse screw rods 85. That is to say, the cross plate 6 is not released from the locking of the rack 2 5 at the moment of contact with the outer surface of the valve port of the safety valve, but it still has a certain moving distance, which causes the cross plate 6 to rotate and synchronously rotate the forward and reverse screw rods 85. That is to say, this distance must also be taken into consideration for the placement position of the connectors of different specifications on the switching turntable 3, specifically: the moving spacing of the cross plate 6 - the sum of the spacing between the valve ports of safety valves of different specifications and the distance in which the cross plate 6 rotates and the clamping force of the U-shaped block 8 on the connecting rod 83 is released through the forward and reverse screw rods 85. This sum of distances requires the rack 2 5 to drive the incomplete gear 31 and the switching turntable 3 to rotate until the connector of the next specification corresponds to the valve port position of the safety valve. This can also be obtained through simple calculation and processing, and the details will not be repeated.

[0036] It should also be noted that when the safety valve is placed on the bracket 2, the safety valve needs to be located in the center of the bracket 2. This can be achieved by setting a mark on the bracket 2 and performing simple operations, which will not be repeated here.

[0037] In another embodiment of the present invention, the continuous driving member is a universal joint 63 and a telescopic rod 64. The universal joint 63 is arranged between the driving rod 61 and the telescopic rod 64, and the end of the telescopic rod 64 away from the universal joint 63 is transmission-connected to the forward and reverse screw rods 85. The transverse member includes a slide rail 65 provided in the frame 62, and a protruding groove is provided in the slide rail 65. An arc piece 67 is installed on the surface of the protruding groove through a spring 66. The concave side of the arc piece 67 abuts against a cam 68, and the cam 68 is provided on the outer surface of the driving rod 61. Please refer to Figure 8This is a design cross-sectional view of the transverse moving part. When the cross plate 6 abuts against the outer surface of the valve port of the safety valve and rotates, the cam 68 also rotates. Due to the outward protrusion design of the two ends of the cam 68, when the cam 68 rotates, the protrusions at both ends will squeeze the arc piece 67, causing the spring 1 66 to contract and deform until the cam 68 deflects a certain angle, and the cam 68 disengages from the arc piece 67. At this time, the cam 68 slides through the slide rail 65, and the rack 62 continues to move under the drive of the clamp seat 4. At this time, a relative displacement occurs between the cross plate 6 and the rack 62, that is, at this time the rack 62 continues to move, while the cross plate 6 no longer moves. In order to achieve this effect, a torsion spring can be installed between the cross plate 6 and the rack 62. When the cross plate 6 rotates, the torsion spring deforms, and the elastic force generated by the deformation of the torsion spring overcomes the friction between the cam 68 and the slide rail 65 bracket 2, so that when the rack 62 moves, the cross plate 6 can produce a relative displacement between the rack 62. When the horizontal plate 6 stops moving, the rack 2 5 continues to move under the drive of the clamping seat 4. At this time, the designed universal joint 63 and telescopic rod 64 can enable the driving rod 61 to maintain power transmission without being separated from the forward and reverse screw rods 85. The advantage of the design here is that due to the design of the switching turntable 3, if the horizontal plate 6 wants to continue to move, the switching turntable 3 will interfere with its movement. Here, the transverse moving part is designed to make the horizontal plate 6 stop moving after the rotation is triggered, and the universal joint 63 and telescopic rod 64 are set to enable the rack 2 5 to maintain power transmission with the driving rod 61 while continuing to move, thereby overcoming the influence of the motion limit brought by the larger switching turntable 3 located in the central position here, and can also maintain power transmission to facilitate reverse drive after the verification is completed.

[0038] It should be noted here that there are mutually adapted blocks and slots between the two telescopic ends of the telescopic rod 64, so that when the telescopic rod 64 is extended or shortened, the rotational action can still be transmitted.

[0039] What needs to be explained in detail here is that, when driving in the reverse direction, that is, after a safety valve is checked, the power piece is used to drive in the reverse direction, so that the clamp seat 4 moves away from the safety valve position. At this time, the rack 2 5 also moves in the reverse direction. However, due to the setting of the spring 2 81, the rack 2 5 does not come into contact with the incomplete gear 31 at this time. An extension section 84 is also provided on the U-shaped block 8, and a reset member 7 is provided at a position corresponding to the extension section 84 on the installation. A vertical rod 9 is also provided at a position corresponding to the horizontal plate 6 on the mounting frame 1. When the reverse movement is made until the extension section 84 is against the reset member 7, the U-shaped block 8 rotates again, thereby ejecting the rack 2 5 outward, and the rack 2 5 is reset. The new one is ejected, and at the same time, the horizontal plate 6 is against the vertical rod 9. At this time, the horizontal plate 6 is under pressure, but because the cam 68 is in the slide rail 65 and cannot move, a relative displacement occurs between the horizontal plate 6 and the shelf 62 again until the cam 68 moves to the position of the arc piece 67 again. At this time, the cam 68 returns to its original position, thereby restoring the horizontal plate 6 to its original position. At this time, the forward and reverse screw rods 85 rotate and clamp the connecting rod 83 through the U-shaped block 8 again. At this time, all mechanisms return to their initial positions to facilitate the next calibration of the safety valve. The overall use is relatively convenient. The safety valve only needs to be placed manually, and subsequent operations can be performed automatically. It is easy to operate and easy to carry, and is suitable for popularization and use.

[0040] Here, see Figure 5 The reset member 7 is preferably a columnar structure so that it can push the extension section 84 to restore the connecting rod 83 and the U-shaped block 8 to their initial angles to eject the rack 2 5.

[0041] In order to further improve the overall use effect, the safety valve calibration and testing bench that is convenient for testing multi-caliber safety valves also includes a clamping mechanism, which is arranged on the base 21. After the clamping seat 4 moves close to the safety valve and makes the cross plate 6 butt against the surface of the safety valve pipe mouth, the clamping mechanism is used to plug the safety valve into the corresponding safety valve interface, so that the safety valve can be easily plugged into the corresponding connector, and then the hydraulic system on the calibration and testing bench is used to make the intake system butt against the safety valve through the connector, and the intake system, connector and safety valve are clamped by the clamping seat 4 and the hydraulic system, thereby facilitating subsequent calibration operations.

[0042] In another embodiment of the present invention, the clamping mechanism includes a placement disk 23 threadedly mounted on the bracket 2, and an active disk 22 is rotatably arranged on the base 21, a toothed disk 24 is arranged on the active disk 22, and a circular ring is also threadedly mounted on the base 21, a limiting track 26 is arranged on the circular ring, a curved groove 25 is provided on the active disk 22, and a driving block 27 with one end slidingly mounted in the limiting track 26 is embedded in the curved groove 25, and a clamping member 28 is fixed on the driving block 27. A rack 29 is provided at a position corresponding to the toothed disk 24 on the frame 62. When the clamping seat 4 moves close to the safety valve, And when the cross plate 6 abuts against the outer surface of the valve port of the safety valve, the rack 29 engages with the toothed disc 24 to rotate the active disc 22. When the active disc 22 rotates, the driving block 27 slides in a straight line in the limit track 26 through the curved groove 25 provided thereon, until the clamping member 28 abuts against the outer surface of the safety valve through the driving block 27. It should be noted that the clamping member 28 is elastically arranged and can be connected to the driving block 27 by an elastic member, so that safety valves of different specifications can be clamped. This is a prior art and will not be described in detail. After the clamping is completed, that is, the clamping member 28 When the active disc 22 contacts the surface of the safety valve, the active disc 22 is still rotating, but the clamping member 28 cannot move any further. At this time, the active disc 22 forms a whole with the clamping member 28 and the safety valve. If the active disc 22 needs to continue rotating, the clamping member 28 will clamp the safety valve and rotate together. Moreover, since the top of the clamping member 28 slides with the bottom of the placement disc 23, the placement disc 23 is also driven to rotate. When the placement disc 23 rotates, it moves downward through the threaded mechanism with the bracket 2, thereby moving the safety valve downward, so that the safety The valve is plugged downward into the corresponding connector on the switching dial 3. When the power part is driven in the reverse direction, the active disk 22 is first rotated by the rack 1 29. During the rotation, the clamping member 28 moves away from the safety valve until the clamping member 28 and the driving block 27 move to the maximum stroke. At this time, since the reciprocating stroke is consistent, the active disk 22 rotates the placement disk 23 in the opposite direction through the driving block 27 and the clamping member 28. At this time, the placement disk 23 moves upward and the safety valve is pulled out upward, so that the safety valve can be installed and disassembled conveniently, further improving the overall use effect.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A safety valve calibration and testing platform convenient for testing multi-caliber safety valves, comprising a mounting frame (1) and a base (21) arranged on the mounting frame (1), a bracket (2) for placing the safety valve to be calibrated is further arranged on the base (21), and a clamping seat (4) is further installed on the mounting frame (1) through a power member, characterized in that: The safety valve calibration test bench convenient for testing multi-caliber safety valves also includes: The second rack (5) is mounted on the clamping seat (4) through a locking mechanism, and the switching turntable (3) provided on the mounting frame (1) is rotated. When the clamping seat (4) is driven by the power member to move toward the safety valve, the second rack (5) is engaged with the incomplete gear (31) provided on the switching turntable (3); The horizontal plate (6) is mounted on the clamp seat (4) through a trigger mechanism, and the trigger mechanism is also connected to the locking mechanism. When the clamp seat (4) moves toward the safety valve and the horizontal plate (6) abuts against the surface of the safety valve pipe mouth, the locking mechanism is driven by the trigger mechanism to release the lock of the rack 2 (5), thereby realizing the separation action of the rack 2 (5) and the incomplete gear (31) in the meshing state.

2. The safety valve calibration and testing bench conveniently used for testing multi-caliber safety valves according to claim 1, characterized in that: The locking mechanism comprises a mounting plate (82) arranged on the clamp seat (4); the second rack (5) is arranged on the mounting plate (82) via the second spring (81); when the locking mechanism locks the second rack (5), the second spring (81) is in a pulled-up deformed state.

3. The safety valve calibration and testing bench convenient for testing multi-caliber safety valves according to claim 2, characterized in that: The locking mechanism further comprises a U-shaped block (8) rotatably mounted on the second rack (5), and a forward and reverse screw rod (85) rotatably mounted on the mounting plate (82), wherein the forward and reverse screw rod (85) is threadedly connected to the U-shaped block (8), and a connecting rod (83) is rotatably mounted at a groove position of the U-shaped block (8), and the other end of the connecting rod (83) is fixedly connected to the mounting frame (1).

4. The safety valve calibration and testing bench conveniently used for testing multi-caliber safety valves according to claim 3 is characterized by: The second rack (5) is intermittently provided with special-shaped teeth (51) at the position of the teeth, and the special-shaped teeth (51) protrude outward to form a protrusion.

5. The safety valve calibration and testing bench conveniently used for testing multi-caliber safety valves according to claim 4, characterized in that: The trigger mechanism includes a frame (62) arranged on the clamp seat (4), the transverse plate (6) is rotatably arranged on the frame (62), and a transverse member connected to the transverse plate (6) is arranged in the frame (62), and a driving rod (61) is also installed on the transverse member, and the end of the driving rod (61) is connected to the forward and reverse screw rods (85) through a continuous driving member. After the transverse plate (6) abuts against the surface of the safety valve pipe mouth and deflects, the transverse plate (6) and the driving rod (61) and the frame (62) are relatively displaced by the transverse member, and the continuous driving member is used to maintain power transmission when the driving rod (61) and the forward and reverse screw rods (85) generate a deflection angle.

6. The safety valve calibration and testing bench conveniently used for testing multi-caliber safety valves according to claim 5, characterized in that: The continuous driving member is a universal joint (63) and a telescopic rod (64), the universal joint (63) is arranged between the driving rod (61) and the telescopic rod (64), and the end of the telescopic rod (64) away from the universal joint (63) is transmission-connected to the forward and reverse screw rods (85).

7. The safety valve calibration and testing bench conveniently used for testing multi-caliber safety valves according to claim 6, characterized in that: The transverse moving member includes a slide rail (65) provided in a frame (62), a protruding groove provided in the slide rail (65), an arc-shaped piece (67) being installed on the surface of the protruding groove via a spring (66), a cam (68) being abutted on the concave side of the arc-shaped piece (67), and the cam (68) being provided on the outer surface of the driving rod (61).

8. The safety valve calibration and testing bench conveniently used for testing multi-caliber safety valves according to claim 7, characterized in that: An extension section (84) is also provided on the U-shaped block (8), a reset member (7) is provided at a position corresponding to the extension section (84) on the mounting frame, and a vertical rod (9) is also provided at a position corresponding to the horizontal plate (6) on the mounting frame (1).

9. The safety valve calibration and testing bench conveniently used for testing multi-caliber safety valves according to claim 8, characterized in that: The switching turntable (3) is provided with a plurality of safety valve connectors of different models, and the plurality of safety valve connectors are arranged along an arc.

10. The safety valve calibration and testing bench conveniently used for testing multi-caliber safety valves according to claim 9, characterized in that: The safety valve calibration and testing bench convenient for testing multi-caliber safety valves further comprises a clamping mechanism, which is arranged on a base (21). After the clamping base (4) moves close to the safety valve and the cross plate (6) abuts against the surface of the safety valve pipe mouth, the clamping mechanism is used to plug the safety valve into the corresponding safety valve interface.

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