A portable spring safety valve calibration and detection device

Abstract

The present invention relates to the field of safety valve detection technology, and in particular to a portable spring safety valve calibration and testing device, comprising a bracket and a force sensor mounted on the bracket, a circular hole being opened in the middle of the bottom of the bracket, a hydraulic cylinder being fixedly connected to the top of the bracket, and a screw being slidably connected to the hydraulic cylinder and in contact with the force sensor. When the bracket is placed on the spring safety valve, the present invention pulls the curved plate to swing downward 180 degrees. The curved plate drives the positioning plate to swing downward and approach the spring safety valve through the swing plate. The hydraulic cylinder is then activated to drive the three positioning plates to move toward each other and contact the spring safety valve through the swing plate. The positioning plate centers the spring safety valve so that the spring safety valve and the bracket are installed perpendicular to each other. In this way, there is no need to manually adjust the spring safety valve and the bracket to a mutually perpendicular state. The bracket and the spring safety valve can be automatically adjusted to a mutually perpendicular state before pressure testing is performed, thereby improving detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of safety valve detection, in particular to a portable spring safety valve calibration and detection device. Background Art

[0002] Safety valves are automatic valves primarily used in boilers, pressure vessels, and pipelines. They control pressure to a level below a specified value, playing a crucial role in protecting personnel and equipment operation. Safety valves must undergo a pressure test before use, requiring the use of a safety valve testing device.

[0003] Chinese patent publication number CN118329434A discloses a portable safety valve online calibrator, comprising a storage rack and a detection rack; the detection rack comprises a detection portion, a lifting portion, and a plurality of locking portions uniformly slidably disposed on the circumferential side of a mounting ring; the detection portion comprises a sleeve; a plurality of arc-shaped plates are fixed to the bottom surface of the sleeve; an annular plate is fixed to the circumferential side of the sleeve; the lifting portion comprises a threaded ring threadedly rotatably disposed on each arc-shaped plate; a rotating ring is rotatably disposed on the circumferential side of the threaded ring; a plurality of extension plates are uniformly fixed to the circumferential side of the rotating ring; a sliding frame is slidably disposed on each extension plate; and an L-shaped plate is fixed to the bottom surface of the sliding frame. Although the above patent can perform pressure testing on spring safety valves, in order to ensure that the relative position between the bracket and the spring safety valve is perpendicular, manual adjustment and positioning of the coaxial vertical position between the bracket and the safety valve is required. Manual adjustment still has a small error, which can easily cause the pressure application direction to be different from the force direction of the valve stem, resulting in the measured limit trip pressure being inconsistent with the actual lifting force applied to the valve stem, thereby affecting the accuracy of the test.

[0004] The present invention aims to solve the problems existing in the above patents. To this end, a portable spring safety valve calibration and testing device is proposed, which can automatically make the bracket and the spring safety valve perpendicular to each other and then perform pressure testing to improve the detection accuracy. Summary of the Invention

[0005] In order to overcome the need to manually adjust and position the coaxial vertical position between the bracket and the safety valve, manual adjustment will still have a small error, which can easily lead to the pressure direction being different from the force direction of the valve stem, resulting in the measured limit jump pressure being inconsistent with the actual lifting force exerted on the valve stem, thereby affecting the accuracy of the detection. The present invention provides a portable spring safety valve calibration and detection device that can automatically make the bracket and the spring safety valve perpendicular to each other and then perform pressure detection to improve the detection accuracy.

[0006] The present invention is achieved through the following technical solutions:

[0007] A portable spring safety valve calibration and detection device includes a bracket and a force sensor installed on the bracket, a circular hole is opened in the middle of the bottom of the bracket, a hydraulic cylinder is fixedly connected to the top of the bracket, a screw in contact with the force sensor is slidably connected to the hydraulic cylinder, a connector is connected to the hydraulic cylinder, a connecting end is installed inside the bracket, and also includes a swing frame, an arc plate, a swing plate, a positioning plate, a rubber clamp, a hydraulic cylinder, a limit assembly and an adjustment assembly. The adjustment assembly is installed at the lower part of the bracket for adjusting the contact area between the bracket and the spring safety valve, and the inner side of the bracket is connected to the swing frame with a rotation evenly spaced interval along the circumference, and the swing frame is fixed with The curved plate has a rubber clamping frame symmetrically fixed on the curved plate and is clamped on the bracket. The inner side of the curved plate is rotatably connected to a swing plate. The tail end of the curved plate on each curved plate is rotatably connected to a positioning plate. The inner side of the curved plate is rotatably connected to a hydraulic cylinder. The end of the telescopic rod of the hydraulic cylinder is rotatably connected to one of the swing plates. When the curved plate swings and drives the positioning plate to swing close to the spring safety valve through the swing plate, the telescopic rod of the hydraulic cylinder extends and drives the three positioning plates to move and contact the spring safety valve through the swing plate, so that the positioning plate centers the spring safety valve and is perpendicular to the bracket. The limit assembly is installed at the lower part of the bracket to limit the curved plate.

[0008] Further description, it also includes a sealing gasket fixed to the arc-shaped plate to fill the gap between adjacent arc-shaped plates.

[0009] To further illustrate, the limiting assembly includes an external threaded ring fixed to the circumference of the bottom of the bracket, and a threaded limiting ring is threadedly connected to the outer side of the external threaded ring for limiting the arc plate.

[0010] Further explanation, the adjustment component includes a limit plate that is evenly spaced and slidably connected to the circumference of the bracket to adjust the contact area between the bracket and the spring safety valve. A straight hole is opened in the middle of the limit plate, and a rack is fixed to the inner side of the straight hole of the limit plate. The bracket is evenly spaced along the circumference and is connected to a spur gear that meshes with the rack to drive the rack to move. A trigger assembly is provided on the bracket to drive the spur gear to rotate.

[0011] Further explanation, the trigger assembly includes an inner ring gear rotatably connected to the circumference of the bracket, the inner ring gear passes through the limit plate and engages with the spur gear, the bottom of the bracket is rotatably connected to a torsion bar, and the torsion bar is fixedly sleeved with a driving gear that engages with the inner ring gear to drive the inner ring gear to rotate.

[0012] Further explanation, the portable spring safety valve calibration and detection device also includes a fixed component, which includes a cylinder that is slidably mounted on the bracket, a fixed ring is fixedly connected to the inner side of the cylinder along the circumferential direction, a movable rod is slidably mounted on the fixed ring along the circumferential direction, a clamping rod is rotatably mounted on the movable rod, adjacent clamping rods are staggered and used to clamp the valve stem of the spring safety valve, a torsion spring is connected between the clamping rod and the movable rod, trigger rods are evenly spaced circumferentially on the inner side of the cylinder, and the trigger rods are in a trajectory that deviates from the circumferential motion of the movable rod to drive the clamping rod to swing, an n-type plate is fixed to the cylinder, and an adjusting nut that is rotatably connected to the screw thread is rotatably connected to the n-type plate, and a rotating component is provided on the cylinder to drive the movable rod to move in a circle.

[0013] Further explanation, the rotating assembly includes a rotating shaft that is rotatably connected to the top of the cylinder, a disc is fixedly connected to the end of the rotating shaft, and the disc is fixedly connected to the movable rod in the circumferential direction for driving the movable rod to move in a circular motion. A worm gear is fixedly mounted on the rotating shaft, and a drive rod is rotatably connected to the cylinder, and a worm that meshes with the worm gear is fixedly connected to the end of the drive rod.

[0014] Further explanation: the portable spring safety valve calibration and detection device also includes protective pads fixed to the outer bottom of the bracket at even intervals to protect the spring safety valve.

[0015] The beneficial effects of the present invention are:

[0016] 1. When placing the bracket on the spring safety valve, pull the curved plate to swing downward 180 degrees. The curved plate drives the positioning plate to swing downward close to the spring safety valve through the swing plate. Then start the hydraulic cylinder to drive the three positioning plates to move towards each other through the swing plate to contact the spring safety valve. The positioning plate centers the spring safety valve so that the spring safety valve and the bracket are installed perpendicular to each other. In this way, there is no need to manually adjust the spring safety valve and the bracket to a state where they are perpendicular to each other. The bracket and the spring safety valve can be automatically adjusted to a state where they are perpendicular to each other before pressure testing, thereby improving detection accuracy.

[0017] 2. Under the action of the clamping rod, whenever the bracket is placed on the spring safety valve, the clamping rod swings and contacts the valve stem of the spring safety valve, thus completing the connection between the valve stem of the spring safety valve and the screw. In this way, the screw can be connected to the valve stems of spring safety valves of different thicknesses through the swing of the clamping rod. There is no need to use different types of connection tools according to the valve stems of spring safety valves of different thicknesses, thereby facilitating the connection between the screw and the valve stem of the spring safety valve and improving the connection efficiency.

[0018] 3. Under the action of the protective pad, whenever the bracket is placed on the spring safety valve, the protective pad contacts the spring safety valve, and the protective pad protects the spring safety valve, which can prevent the friction between the bracket and the spring safety valve from causing wear of the spring safety valve, thereby ensuring the safety of the spring safety valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the screw of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the curved plate and the positioning plate of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the hydraulic cylinder of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the arc plate and the threaded limiting ring in operation of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the adjustment component of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing component of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the clamping rod and the trigger rod of the present invention.

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the clamping rod of the present invention in operation.

[0028] Figure 10 It is a schematic diagram of the top structure of the clamping rod of the present invention.

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the protection pad of the present invention.

[0030] The names and serial numbers of the parts in the figure are: 1-bracket, 2-force sensor, 3-connector, 4-hydraulic cylinder, 41-screw, 5-connecting end, 6-spring safety valve, 7-swing frame, 8-arc plate, 81-sealing gasket, 9-swing plate, 10-positioning plate, 11-rubber clamp, 111-hydraulic cylinder, 12-external thread ring, 121-thread limit ring, 13-limiting plate, 131-rack, 132-spur gear, 133-inner ring gear, 134-torsion bar, 135-driving gear, 14-cylinder, 141-n-type plate, 142-adjusting nut, 143-driving rod, 144-worm, 145-worm wheel, 146-rotating shaft, 147-disc, 148-movable rod, 149-clamping rod, 1491-torsion spring, 1410-fixing ring, 1411-trigger rod, 15-protection pad. DETAILED DESCRIPTION

[0031] First of all, it should be noted that in the various described embodiments, identical components are provided with identical reference numerals or identical component names, wherein the disclosure contained throughout the entire description can be transferred to the same components having the same reference numerals or identical component names. Positional designations selected in the description, such as top, bottom, lateral, etc., also refer to the directly described and illustrated figures and are transferred to the new position in the event of a change in position.

[0032] Example: A portable spring safety valve calibration and detection device, please refer to Figures 1-6 As shown, it includes a bracket 1 and a force sensor 2 installed on the top of the bracket 1, a circular hole is opened in the middle of the bottom of the bracket 1, and a hydraulic cylinder 4 is fixedly connected to the middle of the top of the bracket 1, and a screw 41 is slidably connected to the hydraulic cylinder 4. The upper part of the screw 41 contacts the force sensor 2, and a connector 3 is connected to the left side of the hydraulic cylinder 4. A connecting end 5 is installed on the left rear side of the top of the bracket 1, and also includes a swing frame 7, an arc plate 8, a sealing gasket 81, a swing plate 9, a positioning plate 10, a rubber clamp 11, a hydraulic cylinder 111, a limit assembly and an adjustment assembly. The adjustment assembly is installed at the lower part of the bracket 1. When the adjustment assembly is in operation, the adjustment assembly can adjust the contact area between the bracket 1 and the spring safety valve 6. Three swing frames 7 are connected to the bottom of the bracket 1 at evenly spaced intervals along the circumferential direction. The upper part of the swing frame 7 is fixed with an arc plate 8. The three arc plates 8 are fixed with sealing gaskets 81 on both sides away from each other. When the arc plate 8 swings downward one hundred and eighty degrees The sealing gasket 81 can fill the gap between the adjacent curved plates 8. The three curved plates 8 are symmetrically fixed with rubber brackets 11 on one side close to each other. The rubber bracket 11 is stuck on the bracket 1. The middle part of the inner side of the three curved plates 8 is rotatably connected to two swing plates 9. The tail ends of the two curved plates 8 on each curved plate 8 are rotatably connected to a positioning plate 10. The middle part of the inner side of the curved plate 8 is rotatably connected to a hydraulic cylinder 111. The end of the telescopic rod of the hydraulic cylinder 111 is rotatably connected to the middle of the lower swing plate 9. When the curved plate 8 swings through the swing plate 9 to drive the positioning plate 10 to swing close to the spring safety valve 6, the telescopic rod of the hydraulic cylinder 111 extends and drives the three positioning plates 10 to move and contact the spring safety valve 6 through the swing plate 9, so that the positioning plate 10 will center the spring safety valve 6 and be perpendicular to the bracket 1. The limit assembly is installed at the lower part of the bracket 1. When the limit assembly is in operation, the limit assembly can limit the curved plate 8.

[0033] See also Figure 3 and Figure 5 As shown, the limiting assembly includes an external threaded ring 12 and a threaded limiting ring 121. The external threaded ring 12 is fixedly connected to the bottom of the bracket 1 along the circumferential direction, and the threaded limiting ring 121 is threadedly connected to the outer side of the external threaded ring 12. When the threaded limiting ring 121 moves downward and contacts the arc plate 8, the threaded limiting ring 121 can limit the arc plate 8.

[0034] See also Figure 6 As shown, the adjustment component includes a limit plate 13, a rack 131, a spur gear 132 and a trigger component. Six limit plates 13 are slidingly connected at even intervals along the circumferential direction at the lower part of the bracket 1. When the limit plate 13 moves, the limit plate 13 can adjust the contact area between the bracket 1 and the spring safety valve 6. A straight hole is opened in the middle of the limit plate 13. A rack 131 is fixed to the inner side of the straight hole of the limit plate 13. Six spur gears 132 are connected to the rotation evenly spaced along the circumferential direction at the lower part of the bracket 1. The six spur gears 132 are respectively engaged with the six racks 131. When the spur gears 132 rotate, the spur gears 132 can drive the racks 131 to move. The rack 131 drives the limit plate 13 to move. A trigger assembly is provided at the lower part of the bracket 1. When the trigger assembly is in operation, the trigger assembly can drive the spur gear 132 to rotate. The trigger assembly includes an inner ring gear 133, a torsion bar 134 and a driving gear 135. The inner side of the lower part of the bracket 1 is circumferentially connected to the inner ring gear 133, the inner ring gear 133 passes through the limit plate 13 and meshes with the spur gear 132. The left rear side of the bottom of the bracket 1 is rotatably connected to the torsion bar 134, and the lower part of the torsion bar 134 is fixedly sleeved with a driving gear 135. The driving gear 135 meshes with the inner ring gear 133, and the driving gear 135 can drive the inner ring gear 133 to rotate.

[0035] First, twist the torsion bar 134 to rotate alternately forward and backward, and the torsion bar 134 drives the driving gear 135 to rotate alternately forward and backward, and the driving gear 135 drives the inner ring gear 133 to rotate alternately forward and backward, and the inner ring gear 133 drives the spur gear 132 to rotate alternately forward and backward, and the spur gear 132 rotates alternately forward and backward to drive the rack 131 to move inward and outward, and the rack 131 drives the limit plate 13 to move inward and outward, and the limit plate 13 moves inward and outward to adjust the size of the through hole of the bracket 1, and also adjust the contact area between the bracket 1 and the spring safety valve 6. When the limit plate 13 moves to the required position, stop twisting the torsion bar 134, and the limit plate 13 stops moving inward and outward. In this way, the contact area between the bracket 1 and the spring safety valve 6 can be adjusted according to the size of the spring safety valve 6, thereby improving the adaptability. Then, place the bracket 1 on the spring safety valve 6, the limit plate 13 also contacts the spring safety valve 6, and make the valve stem of the spring safety valve 6 pass through the through hole of the bracket 1. Since the limit plate 13 is adjusted to the required position, the valve stem of the spring safety valve 6 can just pass through the through hole of the bracket 1, and the valve stem of the spring safety valve 6 contacts the bottom end of the screw 41. Then pull the three arc plates 8 to swing downward 180 degrees. The arc plate 8 drives the rubber bracket 11 to disengage from the bracket 1. The arc plate 8 swings downward and the bracket 7 drives the positioning plate 10 to swing downward 180 degrees through the swing plate 9. Stop pulling the arc plate 8 to swing downward. The sealing gasket 81 fills the gap between the adjacent arc plates 8, so that the adjacent arc plates 8 are in better contact. At this time, the arc plate 8 is under the threaded limit ring 121 When the spring safety valve 6 is in the right position, the positioning plate 10 is close to the spring safety valve 6, and the hydraulic cylinder 111 is started. The telescopic rod of the hydraulic cylinder 111 is extended to drive the swing plate 9 to swing upward. The swing plate 9 swings upward to drive the three positioning plates 10 to move toward the direction of the spring safety valve 6. The three positioning plates 10 are in contact with the spring safety valve 6. The three positioning plates 10 center the spring safety valve 6, which makes the spring safety valve 6 and the bracket 1 in a mutually perpendicular state to complete the installation. The valve stem of the spring safety valve 6 is in correspondence with the screw 41. In this way, there is no need to manually adjust the spring safety valve 6 and the bracket 1 to a mutually perpendicular state. The bracket 1 and the spring safety valve 6 can be automatically adjusted to a mutually perpendicular state to perform pressure testing, thereby improving the detection accuracy. Then, the threaded limit ring 121 is twisted to reverse through the external threaded ring 12 The thread moves downward, and when the thread limit ring 121 moves downward and is sleeved on the outer upper part of the three arc plates 8, stop twisting the thread limit ring 121. The thread limit ring 121 limits the three arc plates 8 to prevent the arc plates 8 from swinging and affecting the centering of the positioning plate 10 on the spring safety valve 6, thereby ensuring the accuracy of the pressure detection of the spring safety valve 6. Then, the valve stem of the spring safety valve 6 is connected to the screw 41 through a suitable type of connecting tool, and then the connector 3 is connected to the manual hydraulic pump, and then the data line of the host is connected to the force sensor 2 and the connecting end 5. The host is operated to set the pressure value, and then the manual hydraulic pump is continuously pressed. The manual hydraulic pump discharges the hydraulic oil into the hydraulic cylinder 4, and the hydraulic cylinder 4 drives the screw 41 to move upward.The upward movement of the screw 41 drives the valve stem of the spring safety valve 6 to move upward, thereby detecting the release pressure of the spring safety valve 6, and the force sensor 2 detects the force pulling the screw 41. The force sensor 2 transmits the detected pressure data to the host for display. When the spring safety valve 6 is opened, the host records the pressure data transmitted by the force sensor 2, stops pressing the manual hydraulic pump, and the hydraulic cylinder 4 stops driving the screw 41 to move upward. The screw 41 stops pulling the valve stem of the spring safety valve 6 upward through the connecting tool. The operator can understand whether the opening pressure of the spring safety valve 6 meets the design requirements by checking the data of the host, so that it can be opened accurately and timely when needed. When the opening pressure test of the spring safety valve 6 is completed, the hydraulic cylinder 4 drives the screw 41 to move downward and reset. The screw 41 is reset and drives the valve stem of the spring safety valve 6 to move downward and reset through the connecting tool, and then the data line is connected from the force sensor 2 to the The connecting end 5 is unplugged, and the manual hydraulic pump is disconnected from the connecting head 3 at the same time. The connecting tool is removed to disconnect the screw 41 from the valve stem of the spring safety valve 6. The hydraulic cylinder 111 is started to drive the three positioning plates 10 to move away from each other and reset through the swing plate 9. The positioning plate 10 is reset and disengaged from the spring safety valve 6. Then the threaded limiting ring 121 is twisted to rotate forward and move upward through the external threaded ring 12 to reset. The threaded limiting ring 121 is reset and disengaged from the arc plate 8, which stops limiting the arc plate 8. Then the arc plate 8 is pulled upward to swing 180 degrees to reset. The arc plate 8 drives the positioning plate 10 to swing 180 degrees upward to reset through the swing plate 9. The arc plate 8 resets and drives the rubber bracket 11 to swing 180 degrees upward to reset. The rubber bracket 11 is reset and clamped on the bracket 1. The rubber bracket 11 clamps the arc plate 8 on the bracket 1. Finally, the bracket 1 is removed from the spring safety valve 6 and placed in the box for carrying.

[0036] See also Figure 7-10As shown, the portable spring safety valve 6 calibration and detection device also includes a fixing assembly installed between the bracket 1 and the screw 41, the fixing assembly includes a cylinder 14, an n-type plate 141, an adjusting nut 142, a rotating assembly, a movable rod 148, a clamping rod 149, a torsion spring 1491, a fixing ring 1410 and a trigger rod 1411, the bracket 1 is slidably sleeved with the cylinder 14, the inner upper part of the cylinder 14 is fixedly connected to the fixing ring 1410 along the circumferential direction, and the fixing ring 1410 is slidably sleeved along the circumferential direction. Six movable rods 148 are equipped, and a clamping rod 149 is rotatably mounted on the movable rod 148. Adjacent clamping rods 149 are staggered. When the clamping rod 149 swings and contacts the valve stem of the spring safety valve 6, the clamping rod 149 can clamp the valve stem of the spring safety valve 6. A torsion spring 1491 is connected between the clamping rod 149 and the movable rod 148. Six trigger rods 1411 are evenly spaced along the circumferential direction at the bottom of the cylinder 14. The trigger rod 1411 is in a trajectory that deviates from the circumferential motion of the movable rod 148. When the clamping rod 149 is in a staggered arrangement, the spring safety valve 6 can be clamped. When the rod 149 rotates, the trigger rod 1411 can drive the clamping rod 149 to swing. The top of the cylinder 14 is fixed with an n-type plate 141. The middle of the n-type plate 141 is rotatably connected with an adjusting nut 142. The adjusting nut 142 is threadedly connected to the screw 41. A rotating assembly is provided on the cylinder 14. When the rotating assembly is in operation, the rotating assembly can drive the movable rod 148 to move in a circular motion. The rotating assembly includes a driving rod 143, a worm 144, a worm gear 145, a rotating shaft 146 and a disc 1 47. A rotating shaft 146 is rotatably connected to the middle of the top of the cylinder 14, and a disk 147 is fixedly connected to the bottom end of the rotating shaft 146. The disk 147 is circumferentially fixedly connected to the upper parts of six movable rods 148. When the disk 147 rotates, the disk 147 can drive the movable rods 148 to move in a circle. A worm gear 145 is fixedly mounted on the middle part of the rotating shaft 146. A driving rod 143 is rotatably connected to the upper left side of the cylinder 14. A worm 144 is fixedly connected to the right end of the driving rod 143, and the worm 144 is meshed with the worm gear 145.

[0037] When the bracket 1 is placed on the spring safety valve 6, the valve stem of the spring safety valve 6 is in the cylinder 14, and the adjusting nut 142 is twisted to rotate and drive the n-type plate 141 to move up and down, and the n-type plate 141 moves up and down to drive the cylinder 14 to move up and down, and the cylinder 14 drives the disc 147 to move up and down through the rotating shaft 146, and the disc 147 drives the clamping rod 149 to move up and down through the movable rod 148. When the clamping rod 149 moves up and down to a position suitable for clamping the valve stem of the spring safety valve 6, stop twisting the adjusting screw 41, and then twist the driving rod 143 to rotate and drive the worm 144 to rotate, the worm 144 drives the worm gear 145 to rotate forward, the worm gear 145 drives the rotating shaft 146 to rotate forward, the rotating shaft 146 drives the disc 147 to rotate forward, the disc 147 drives the movable rod 148 to rotate forward, and the movable rod 148 drives the clamping rod 149 to rotate forward. The clamping rod 149 rotates forward and contacts the trigger rod 1411. Since the trigger rod 1411 is in a trajectory deviating from the circular motion of the movable rod 148, the trigger rod 1411 drives the clamping rod 149 to swing inward, the torsion spring 1491 is compressed, and the clamping rod 149 swings inward and contacts the valve stem of the spring safety valve 6. The clamping rod 149 clamps the valve stem of the spring safety valve 6 and fixes it. The clamping rod 149 stops swinging, and the clamping rod 149 fixes the cylinder 14 through the movable rod 148 and the disc 147. The cylinder 14 moves the n-type plate 141 and the adjusting nut 142, stops twisting the driving rod 143, and the disc 147 stops driving the clamping rod 149 to rotate forward through the movable rod 148, thereby completing the connection between the valve stem of the spring safety valve 6 and the screw 41, and the subsequent operation can be carried out to complete the detection of the opening pressure of the spring safety valve 6. When the opening pressure test of the spring safety valve 6 is completed, the torsion drive rod 143 is rotated to drive the worm 144 to rotate in the opposite direction, the worm 144 drives the worm gear 145 to reverse, the worm gear 145 drives the disc 147 to reverse through the rotating shaft 146, the reversed disc 147 drives the clamping rod 149 to reverse through the movable rod 148, the trigger rod 1411 stops limiting the clamping rod 149, and due to the action of the torsion spring 1491, the clamping rod 149 swings outward and resets to disengage from the valve stem of the spring safety valve 6, and stops twisting the drive rod 143. In this way, the swinging of the clamping rod 149 can make it possible to connect the screw 41 to the valve stem of the spring safety valve 6 of different thicknesses, without having to use different types of connection tools according to the valve stems of the spring safety valve 6 of different thicknesses, thereby making it more convenient to connect the screw 41 to the valve stem of the spring safety valve 6 and improving the connection efficiency.

[0038] See also Figure 11 As shown, the portable spring safety valve 6 calibration and detection device also includes a protection pad 15. The protection pads 15 are fixed to the outer bottom of the bracket 1 at even intervals. The protection pads 15 can protect the spring safety valve 6.

[0039] When bracket 1 is placed on spring safety valve 6, it drives protective pad 15 into contact with spring safety valve 6. Bracket 1 is placed on spring safety valve 6 via protective pad 15, which protects spring safety valve 6. When bracket 1 is removed, bracket 1 drives protective pad 15 out of contact with spring safety valve 6. This prevents friction between bracket 1 and spring safety valve 6, which could cause wear and tear, thereby ensuring the safety of spring safety valve 6.

[0040] Finally, it is necessary to point out that the above content is only used to help understand the technical solution of the present invention and cannot be understood as limiting the scope of protection of the present invention; non-essential improvements and adjustments made by technical personnel in this field based on the above content of the present invention are all within the scope of protection required by the present invention.

Claims

1. A portable spring safety valve calibration and detection device, comprising a bracket (1) and a force sensor (2) mounted on the bracket (1), a circular hole being opened in the middle of the bottom of the bracket (1), a hydraulic cylinder (4) being fixedly connected to the top of the bracket (1), a screw (41) being slidably connected to the hydraulic cylinder (4) and in contact with the force sensor (2), a connector (3) being connected to the hydraulic cylinder (4), and a connecting end (5) being mounted on the inner portion of the bracket (1), characterized in that: The invention also includes a swing frame (7), an arc plate (8), a swing plate (9), a positioning plate (10), a rubber clamp (11), a hydraulic cylinder (111), a limit assembly and an adjustment assembly, wherein the adjustment assembly is mounted on the lower portion of the bracket (1) and is used to adjust the contact area between the bracket (1) and the spring safety valve (6). The inner side of the bracket (1) is connected to the swing frame (7) at a circumferentially uniform interval rotation, the swing frame (7) is fixed with an arc plate (8), and the arc plate (8) is symmetrically fixed with a rubber clamp (11) stuck on the bracket (1). The inner side of the arc plate (8) is connected to the swing plate (9) in a rotatable manner. The tail end of the arc plate (8) on each arc plate (8) is connected to the swing plate (9). A positioning plate (10) is rotatably connected between the two plates, and a hydraulic cylinder (111) is rotatably connected to the inner side of the arc plate (8). The end of the telescopic rod of the hydraulic cylinder (111) is rotatably connected to one of the swing plates (9). When the arc plate (8) swings through the swing plate (9) to drive the positioning plate (10) to swing close to the spring safety valve (6), the telescopic rod of the hydraulic cylinder (111) extends and drives the three positioning plates (10) to move and contact the spring safety valve (6) through the swing plate (9), so that the positioning plate (10) centers the spring safety valve (6) and is perpendicular to the bracket (1). The limiting assembly is installed at the lower part of the bracket (1) and is used to limit the arc plate (8); The limiting assembly includes an external threaded ring (12) fixed to the bottom circumference of the bracket (1), and a threaded limiting ring (121) is connected to the outer side of the external threaded ring (12) through a thread, and is used to limit the arc plate (8); The regulating assembly includes a limit plate (13) that is evenly spaced and slidably connected to the circumference of the bracket (1) to adjust the contact area between the bracket (1) and the spring safety valve (6). A straight hole is opened in the middle of the limit plate (13). A rack (131) is fixed to the inner side of the straight hole of the limit plate (13). A spur gear (132) meshing with the rack (131) is connected to the bracket (1) at evenly spaced rotations along the circumference to drive the rack (131) to move. A trigger assembly is provided on the bracket (1) for driving the spur gear (132) to rotate; The trigger assembly includes an inner gear ring (133) rotatably connected to the circumference of the bracket (1), the inner gear ring (133) penetrates the limit plate (13) and meshes with the spur gear (132), the bottom of the bracket (1) is rotatably connected to a torsion bar (134), and a driving gear (135) meshing with the inner gear ring (133) is fixedly mounted on the torsion bar (134) to drive the inner gear ring (133) to rotate.

2. A portable spring safety valve calibration and detection device according to claim 1, characterized in that: It also includes a sealing gasket (81) fixed to the arc-shaped plate (8) to fill the gap between adjacent arc-shaped plates (8).

3. A portable spring safety valve calibration and detection device according to claim 2, characterized in that: The portable spring safety valve (6) calibration and detection device also includes a fixing assembly, which includes a cylinder (14) that is slidably mounted on the bracket (1), a fixing ring (1410) is fixedly connected to the inner side of the cylinder (14) along the circumferential direction, a movable rod (148) is slidably mounted on the fixing ring (1410) along the circumferential direction, a clamping rod (149) is rotatably mounted on the movable rod (148), and adjacent clamping rods (149) are staggered and used to clamp the valve stem of the spring safety valve (6). The clamping rod (149) and the movable rod (1 48), a torsion spring (1491) is connected between the cylinder (14), and trigger rods (1411) are evenly spaced along the circumferential direction on the inner side of the cylinder (14). The trigger rods (1411) are in a trajectory that deviates from the circumferential motion of the movable rod (148) to drive the clamping rod (149) to swing. An n-type plate (141) is fixed to the cylinder (14), and an adjusting nut (142) threadedly connected to the screw (41) is rotatably connected to the n-type plate (141). A rotating component is provided on the cylinder (14) for driving the movable rod (148) to move in a circular motion.

4. A portable spring safety valve calibration and detection device according to claim 3, characterized in that: The rotating assembly includes a rotating shaft (146) rotatably connected to the top of the cylinder (14), a disc (147) is fixedly connected to the end of the rotating shaft (146), and the disc (147) is fixedly connected to the movable rod (148) in the circumferential direction for driving the movable rod (148) to move in a circular motion. A worm gear (145) is fixedly sleeved on the rotating shaft (146), and a driving rod (143) is rotatably connected to the cylinder (14), and a worm (144) meshing with the worm gear (145) is fixedly connected to the end of the driving rod (143).

5. A portable spring safety valve calibration and detection device according to claim 4, characterized in that: The portable spring safety valve (6) calibration and detection device further includes protective pads (15) fixed to the outer bottom of the bracket (1) at even intervals to protect the spring safety valve (6).

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