A high pressure safety valve calibrating device

Abstract

The utility model relates to the technical field of safety valve calibration device, and disclose a kind of high-pressure safety valve calibration device, including calibration platform, the side of calibration platform is equipped with support seat, the upper end of support seat is equipped with chuck limiting component, safety valve is placed on top shell body, start motor, can drive rotating shaft and gear rotation, so that gear ring plate drives strip plate rotation, the cooperation of strip plate and sliding slot being set can make base slide in clamping groove, chuck block and flexible pad move, complete the clamping of safety valve, and by the aid of flexible pad, reduce the direct contact pressure on the surface of safety valve, reduce the scratch on the surface of valve, while maintaining certain flexibility, avoid surface damage due to excessive pressure, then pull reinforcing clamp block, and make reinforcing frame drive sliding rod rotate in hinged seat, until reinforcing clamp block carries out the limitation to safety valve shell top end, realize the limitation to the up-down direction of safety valve, reinforcing effect is good, reduce the unstable situation of safety valve.

Description

Technical Field

[0001] This utility model relates to the technical field of safety valve calibration devices, specifically a high-pressure safety valve calibration device. Background Technology

[0002] A safety valve calibration device is a tool used to test and calibrate the performance of safety valves. Safety valves are essential components used to protect pressure vessels, pipelines, or other pressure systems from overpressure damage. When the system pressure exceeds the safety valve's set pressure, the safety valve automatically opens to release the pressure, thereby preventing explosion or damage to the equipment.

[0003] For example, the safety valve calibration device with announcement number CN221198935U includes a test bench body. A clamping plate is installed on the top of the test bench body, and fixed claws are symmetrically arranged on the top of the clamping plate. A screw is inserted and connected to the top of the fixed claws. A fixing nut is sleeved on the outside of the screw and on top of the fixed claws. A buffer member is installed at the bottom of the screw and at the bottom of the fixed claws. This invention, by providing a buffer member at the bottom of the fixed claws, allows the operator to adjust the initial length of the compression spring in the compression sleeve by rotating the fixing nut. When the fixed claws are working, the top side of the safety valve is clamped and fixed by the rubber sleeve. The moving block moves into the moving groove, driving the moving rod to squeeze the compression spring through the push block. The deformation and compression of the rubber sleeve and the compression spring achieve flexible clamping of the safety valve, avoiding direct clamping and damage to the surface of the safety valve by the fixed claws, and reducing the damage to the safety valve caused by rigid clamping.

[0004] The aforementioned patent proposes that the safety valve can be flexibly clamped by the deformation and compression of the rubber sleeve and the compression spring, thereby reducing damage to the surface of the safety valve. However, during the use of the safety valve calibration device, the clamping force of the three-jaw chuck is concentrated at three points, which may cause the valve to tilt or shift slightly during the clamping process, resulting in overall instability of the safety valve and easily affecting the test results. Utility Model Content

[0005] The purpose of this invention is to provide a high-pressure safety valve calibration device to solve the problem mentioned in the background art that the clamping force of the three-jaw chuck flexible clamping is concentrated at three points, which will cause the valve to deviate slightly during the clamping process, resulting in the overall instability of the safety valve.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure safety valve calibration device, including a calibration platform, a support base installed on one side of the calibration platform, and a chuck limiting component installed on the upper end of the support base, the chuck limiting component being used to limit the safety valve; The chuck limiting assembly includes a mounting component and a drive structure installed inside the mounting component. A limiting component is also installed on the mounting component, and a reinforcing component is installed at the top of the mounting component. With the cooperation of the drive structure and the limiting component, the safety valve can be clamped, and the reinforcing component can restrict the vertical movement of the safety valve.

[0007] Preferably, the mounting component includes a bottom housing and a top housing mounted on the upper end of the bottom housing. Grooves are provided on the side walls of both the bottom housing and the top housing, and the bottom housing and the grooves are assembled and fixed by screws.

[0008] Preferably, the drive structure includes a motor and a rotating shaft connected to the output end of the motor. A gear is sleeved on the outer side of the rotating shaft. A toothed ring plate is meshed with the upper end of the gear, and the toothed ring plate is slidably connected between the bottom housing and the top housing. A strip plate is installed on the upper end of the toothed ring plate. When the motor is started, the rotating shaft and the gear can be driven to rotate.

[0009] Preferably, the limiting member includes a base and a groove formed on the bottom wall of the base, with the strip plate located in the groove. A slot is formed on the surface of the top shell, and a chuck block is installed at the upper end of the base. A flexible pad is embedded in the side wall of the chuck block. With the cooperation of the strip plate and the groove, the base can slide in the slot, and the chuck block and the flexible pad can move.

[0010] Preferably, the reinforcing component includes a hinge seat and a reinforcing frame rotatably connected inside the hinge seat. A groove is provided on the side wall of the reinforcing frame, and a sliding rod is slidably connected in the groove. A reinforcing block is installed at the upper end of the sliding rod, and a flexible pad is also embedded on the bottom wall of the reinforcing block. Bolts for fixing are installed on the outer walls of both the hinge seat and the reinforcing frame.

[0011] Preferably, the limiting member and the reinforcing member are provided in three sets, and the three sets of the reinforcing member and the limiting member are arranged alternately. The limiting member and the reinforcing member are used to limit the safety valve.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By using the set calibration table, support base and chuck limiting components, the safety valve can be clamped by the cooperation of the drive structure and limiting components. In addition, the reinforcement components restrict the vertical direction of the safety valve, thereby achieving good reinforcement effect, reducing the instability of the safety valve, and facilitating calibration.

[0013] 2. By using the sliding rod and channel, the reinforcement block can be moved away from or closer to the reinforcement rod, which is beneficial for limiting the vertical movement of safety valves at different heights and increases the range of applications. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the chuck limiting component of this utility model; Figure 3 For the present utility model Figure 2 Enlarged 3D structural diagram at point A in the middle; Figure 4 This is a three-dimensional structural diagram of the reinforcement component of this utility model.

[0015] In the diagram: 1. Verification table; 2. Support base; 3. Chuck limiting assembly; 31. Mounting component; 311. Bottom shell; 312. Groove; 313. Top shell; 32. Drive structure; 321. Motor; 322. Shaft; 323. Gear; 324. Tooth ring plate; 325. Strip plate; 33. Limiting component; 331. Base; 332. Slide groove; 333. Chuck block; 334. Flexible pad; 335. Slot; 34. Reinforcing component; 341. Hinge seat; 342. Reinforcing frame; 343. Channel; 344. Slide rod; 345. Reinforcing block; 346. Bolt. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1: Please refer to Figures 1-4 A high-pressure safety valve calibration device includes a calibration table 1, a support base 2, and a chuck limiting component 3. The support base 2 is located on one side of the calibration table 1, and the chuck limiting component 3 is located at the upper end of the support base 2. The chuck limiting component 3 is used to limit the safety valve, and then the calibration is completed with the help of the calibration table 1. The safety valve testing bench 1 typically includes an adjustable pressure system. The safety valve to be tested is fixed on the testing bench 1 and connected to the testing bench 1 through a suitable connection interface. The air inlet of the safety valve is connected to the pressure source of the testing bench 1. The pressure source of the testing bench 1 (usually compressed air or liquid) begins to apply pressure to the safety valve. The pressure control system on the testing bench 1 can accurately adjust the pressure input to the safety valve. Observe whether the safety valve opens correctly under the set pressure. When the pressure drops to the safety valve closing pressure, check whether the safety valve can close accurately and check whether there is any leakage when the safety valve closes.

[0018] The chuck limiting component 3 includes a mounting part 31 and a drive structure 32 installed inside the mounting part 31. A limiting part 33 is also installed on the mounting part 31, and a reinforcing part 34 is also installed at the top of the mounting part 31. With the cooperation of the drive structure 32 and the limiting part 33, the safety valve can be clamped, and with the cooperation of the reinforcing part 34, the vertical direction of the safety valve is limited, thereby strengthening the safety valve and reducing instability.

[0019] Mounting component 31 includes a bottom housing 311 and a top housing 313 mounted on the upper end of the bottom housing 311. Grooves 312 are provided on the side walls of both the bottom housing 311 and the top housing 313, and the bottom housing 311 and the grooves 312 are assembled and fixed by screws.

[0020] The drive structure 32 includes a motor 321 and a rotating shaft 322 connected to the output end of the motor 321. A gear 323 is sleeved on the outer side of the rotating shaft 322. A toothed ring plate 324 is meshed with the upper end of the gear 323. The toothed ring plate 324 is slidably connected between the bottom housing 311 and the top housing 313. A strip plate 325 is installed on the upper end of the toothed ring plate 324. When the motor 321 is started, it can drive the rotating shaft 322 and the gear 323 to rotate, so that the toothed ring plate 324 drives the strip plate 325 to rotate.

[0021] The limiting component 33 includes a base 331 and a groove 332 formed on the bottom wall of the base 331, with the strip plate 325 located in the groove 332. A slot 335 is formed on the surface of the top housing 313. A chuck block 333 is installed at the upper end of the base 331. A flexible pad 334 is embedded in the side wall of the chuck block 333. With the cooperation of the strip plate 325 and the groove 332, the base 331 can slide in the slot 335, and the chuck block 333 and the flexible pad 334 can move to complete the clamping of the safety valve.

[0022] The reinforcement component 34 includes a hinge seat 341 and a reinforcement frame 342 rotatably connected inside the hinge seat 341. A channel 343 is provided on the side wall of the reinforcement frame 342. A slide rod 344 is slidably connected in the channel 343. A reinforcement block 345 is installed at the upper end of the slide rod 344. A flexible pad 334 is also embedded in the bottom wall of the reinforcement block 345. The flexible pad 334 reduces the direct contact pressure on the surface of the safety valve, reduces scratches on the valve surface, and maintains a certain degree of flexibility to avoid surface damage caused by excessive pressure.

[0023] The limiting member 33 and the reinforcing member 34 are each provided in three sets, and the three sets of reinforcing members 34 and limiting members 33 are arranged alternately. Both the limiting member 33 and the reinforcing member 34 are used to limit the safety valve.

[0024] In this embodiment: the safety valve is placed on the top housing 313, and the motor 321 is started, which drives the rotating shaft 322 and gear 323 to rotate. This causes the toothed ring plate 324 to drive the strip plate 325 to rotate. With the cooperation of the strip plate 325 and the slide groove 332, the base 331 can slide in the slot 335. The chuck block 333 and the flexible pad 334 move towards the center of the top housing 313 to clamp the safety valve. The flexible pad 334 reduces the direct contact pressure on the surface of the safety valve, reducing scratches on the valve surface, while maintaining a certain degree of flexibility to avoid surface damage due to excessive pressure. Then, the reinforcing block 345 is pulled, and the reinforcing frame 342 drives the slide rod 344 to rotate in the hinge seat 341 until the reinforcing block 345 restricts the top of the safety valve housing, thereby restricting the vertical direction of the safety valve. The reinforcement effect is good, reducing the instability of the safety valve and facilitating verification.

[0025] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figure 4 Bolts 346 for fixing are installed on the outer walls of both the hinge seat 341 and the reinforcing frame 342. The bolts 346 can lock the reinforcing frame 342 that rotates in the hinge seat 341, and can also lock the position of the slide rod 344. The slide rod 344 slides in the channel 343, causing the height of the reinforcing block 345 to change, and is locked in conjunction with the bolts 346, which can limit the valve body of the safety valve at different heights.

[0026] In this embodiment: the slide bar 344 slides in the channel 343, causing the height of the reinforcing block 345 to change, and is locked with the bolt 346, which can restrict the valve body of the safety valve at different heights.

[0027] It should be noted that the working principle of the calibration bench 1 is to simulate the pressure changes in the actual working environment and conduct a series of tests on the safety valve to ensure that it can be accurately started and closed under the set pressure conditions, thus ensuring its safety performance. This is not an innovative part of this application document, but is common knowledge, and those skilled in the art are capable of conceiving of the specific structure and structural layout.

[0028] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that provides control.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-pressure safety valve calibration device, comprising a calibration bench (1), characterized in that: A support base (2) is installed on one side of the calibration table (1), and a chuck limiting component (3) is installed on the upper end of the support base (2). The chuck limiting component (3) is used to limit the safety valve. The chuck limiting component (3) includes a mounting part (31) and a drive structure (32) installed inside the mounting part (31). A limiting part (33) is also installed on the mounting part (31), and a reinforcing part (34) is also installed on the top of the mounting part (31).

2. The high-pressure safety valve calibration device according to claim 1, characterized in that: The mounting component (31) includes a bottom shell (311) and a top shell (313) mounted on the upper end of the bottom shell (311). Grooves (312) are provided on the side walls of both the bottom shell (311) and the top shell (313).

3. The high-pressure safety valve calibration device according to claim 2, characterized in that: The drive structure (32) includes a motor (321) and a rotating shaft (322) connected to the output end of the motor (321). A gear (323) is sleeved on the outside of the rotating shaft (322). A toothed ring plate (324) is meshed on the upper end of the gear (323). The toothed ring plate (324) is slidably connected between the bottom shell (311) and the top shell (313). A strip plate (325) is installed on the upper end of the toothed ring plate (324).

4. The high-pressure safety valve calibration device according to claim 3, characterized in that: The limiting member (33) includes a base (331) and a groove (332) opened on the bottom wall of the base (331), and the strip plate (325) is located in the groove (332). A slot (335) is opened on the surface of the top shell (313). A chuck block (333) is installed at the upper end of the base (331), and a flexible pad (334) is embedded on the side wall of the chuck block (333).

5. The high-pressure safety valve calibration device according to claim 4, characterized in that: The reinforcement component (34) includes a hinge seat (341) and a reinforcement frame (342) rotatably connected inside the hinge seat (341). A groove (343) is provided on the side wall of the reinforcement frame (342). A slide rod (344) is slidably connected in the groove (343). A reinforcement block (345) is installed at the upper end of the slide rod (344). A flexible pad (334) is also embedded on the bottom wall of the reinforcement block (345). Bolts (346) for fixing are installed on the outer walls of both the hinge seat (341) and the reinforcement frame (342).

6. The high-pressure safety valve calibration device according to claim 5, characterized in that: The limiting member (33) and the reinforcing member (34) are each provided in three sets, and the three sets of the reinforcing member (34) and the limiting member (33) are arranged alternately.

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