Industrial instrument manual pressure test bench

Abstract

This utility model discloses a manual pressure withstand test bench for industrial instruments, including a workbench, a pressure transmitter located in the middle of the workbench, an adapter clamping mechanism located behind the pressure transmitter, and test mechanisms located on both the left and right sides of the pressure transmitter; a mounting plate is fixed at the rear end of the workbench, a support block is fixed in the middle of the mounting plate, a gearbox is fixed on the support block, a drive motor is fixed at the upper end of the gearbox, and a first transmission gear, a drive gear, an idler gear, and a second transmission gear are located inside the gearbox. The drive gear meshes with the first transmission gear on the right and with the idler gear on the left. This manual pressure withstand test bench for industrial instruments is further equipped with an adapter clamping mechanism and test mechanisms. The adapter clamping mechanism achieves fast and accurate clamping through gear synchronous transmission and limit guide design, while the test mechanisms rely on modular air circuits and intelligent control to improve testing efficiency and safety. The two work together to ensure the high efficiency, reliability, and repeatability of the pressure withstand test for industrial instruments.

Description

Technical Field

[0001] This utility model relates to the field of industrial instrument pressure resistance testing technology, specifically an industrial instrument manual pressure resistance testing bench. Background Technology

[0002] Industrial instrument pressure resistance testing is a mandatory safety test that verifies the mechanical strength and sealing performance of the instrument housing, seals, and connecting components by applying static or dynamic pressure higher than the rated operating pressure within a specified time. It aims to detect material defects, assembly flaws, and potential leakage risks, ensuring that the instrument does not rupture, deform, or leak media under extreme operating conditions. It uses water or air pressure media and comprehensively evaluates through pressure curve monitoring, visual inspection, and leakage judgment (such as the bubble method or pressure drop method). It is applicable to key industrial equipment such as pressure transmitters, flow meters, and valves, and is a core link in ensuring safe production, equipment reliability, and compliance certification.

[0003] Based on existing manual pressure testing benches for industrial instruments, it has been found that during the testing process, a significant amount of time is required to fix the industrial instruments (especially pressure transmitters), and sometimes even the instruments need to be held by hand. This is very time-consuming, labor-intensive, and lacks rigor. In particular, some test benches do not have an emergency pressure relief function, resulting in low safety. Therefore, this utility model designs a manual pressure testing bench for industrial instruments to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a manual pressure resistance test bench for industrial instruments to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A manual pressure resistance test bench for industrial instruments includes a workbench, a pressure transmitter located in the center of the workbench, an adapter clamping mechanism located behind the pressure transmitter, and test mechanisms located on both the left and right sides of the pressure transmitter. A mounting plate is fixed to the rear end of the workbench, a support block is fixed to the center of the mounting plate, a gearbox is fixed to the support block, and a drive motor is fixed to the upper end of the gearbox. The gearbox contains a first transmission gear, a drive gear, an idler gear, and a second transmission gear. The drive gear meshes with the first transmission gear on its right side and with the idler gear on its left side. The idler gear meshes with the second transmission gear on its left side. The gears are connected in the following ways: the first transmission gear is connected to the first transmission clamping plate in front, the second transmission gear is connected to the second transmission clamping plate in front, and a limiting slide plate is fixed to the front end of the gearbox. The first and second transmission clamping plates are slidably connected to the limiting slide plate. The lower support of the workbench is fixed to the mounting platform. An electrical control box and an air supply pump are fixed to the upper end of the mounting platform. The air supply pump is connected to an air supply pipeline at its air delivery end. The upper end of the air supply pipeline is connected to a pressure transmitter through a first connecting hose. The left end of the pressure transmitter is connected to a delivery pipeline through a second connecting hose. A pressure gauge and an electrically controlled ball valve are installed on the delivery pipeline.

[0007] Optionally, the first transmission clamp and the second transmission clamp are provided with racks at one end near the gearbox body, and the racks mesh with the first transmission gear and the second transmission gear respectively.

[0008] Optionally, the gas delivery pipeline extends upward to the upper end of the workbench and is located to the right of the pressure transmitter, while the delivery pipeline is located to the left of the pressure transmitter.

[0009] Optionally, the two ends of the first connecting hose and the second connecting hose are respectively connected to the gas transmission pipeline and the delivery pipeline via flanges.

[0010] Optionally, the pressure gauge and the electrically controlled ball valve are installed sequentially along the extension direction of the delivery pipeline.

[0011] Optionally, the limiting slide plate is provided with a guide groove that matches the sliding trajectory of the first transmission clamp and the second transmission clamp.

[0012] Optionally, the inner sidewalls of the first and second transmission clamps are provided with clamping tooth grooves.

[0013] Optionally, the electrical control box and the air supply pump are fixed side by side on the upper part of the mounting platform.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, an adaptive clamping mechanism is provided. Through a multi-stage transmission design of a drive motor, gearbox, and transmission gear set, the adaptive clamping mechanism realizes the synchronous reverse movement of the first transmission clamping plate and the second transmission clamping plate, ensuring the uniform distribution of clamping force. The guide groove structure of the limiting slide plate effectively constrains the movement trajectory of the clamping plate and avoids deflection. The inner tooth groove of the clamping plate improves the clamping stability by increasing the friction coefficient and can be adapted to various specifications of instruments such as cylindrical and flange interfaces. The gear transmission system adopts an idler wheel reverse drive design, realizing the synchronous movement of the clamping plates on both sides under the drive of a single motor, significantly reducing the manual adjustment time. Moreover, the clamping force is precisely controlled by the gear module to avoid overpressure damage to the instrument under test.

[0016] 2. This utility model includes a testing mechanism with a modular air circuit design. The air supply pump and electrical control box are integrated on the mounting platform to achieve physical isolation between the air circuit and the electrical circuit, which complies with the high-pressure test safety specifications. The air supply pipeline and the delivery pipeline are respectively located on the left and right sides of the pressure transmitter. The flexible connection of the first connecting hose and the second connecting hose compensates for installation errors, and the flange sealing connection ensures that there is no leakage in the high-pressure air circuit. The pressure gauge and the electrically controlled ball valve are arranged sequentially along the pipeline to achieve the dual functions of real-time pressure monitoring and rapid pressure relief. Combined with the automatic control logic of the electrical control box, it can support complex test processes such as stepped pressure increase and pressure holding time. Attached Figure Description

[0017] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from a frontal view.

[0019] Figure 3 This is a three-dimensional top view of the structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of this utility model from a left-side plan view;

[0021] Figure 5 This is a three-dimensional sectional view of the structure of this utility model. Figure 1 ;

[0022] Figure 6 This is a three-dimensional sectional view of the structure of this utility model. Figure 2 ;

[0023] Figure 7 This is a three-dimensional sectional view of the structure of this utility model. Figure 3 ;

[0024] Figure 8 This utility model Figure 7 A magnified three-dimensional structural diagram of point A in the middle.

[0025] In the diagram: 1. Workbench; 2. Pressure transmitter; 3. Adapter clamping mechanism; 301. Mounting plate; 302. Support block; 303. Drive motor; 304. Gearbox; 305. First transmission gear; 306. Drive gear; 307. Idler gear; 308. Second transmission gear; 309. First transmission clamp; 310. Second transmission clamp; 311. Limiting slide plate; 4. Test mechanism; 401. Mounting platform; 402. Electrical control box; 403. Air supply pump; 404. Air delivery pipeline; 405. First connecting hose; 406. Second connecting hose; 407. Delivery pipeline; 408. Pressure gauge; 409. Electrically controlled ball valve. Detailed Implementation

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] 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.

[0029] Please see Figures 1-8This manual withstand pressure test bench for industrial instruments achieves instrument clamping and fixing as well as withstand pressure testing functions through the coordinated operation of the adapting clamping mechanism 3 and the testing mechanism 4. The specific workflow is as follows:

[0030] Assembly and workflow of the clamping mechanism 3

[0031] Assembly Relationship: A mounting plate 301 is welded to the rear end of the workbench 1. A support block 302 is bolted to the middle of the mounting plate 301. A gearbox 304 is connected to the support block 302 via a flange. A drive motor 303 is bolted to the upper end of the gearbox 304. A drive gear 306 is coaxially mounted inside the gearbox. The right side of the drive gear 306 meshes with a first transmission gear 305, and the left side meshes with an idler gear 307. The idler gear 307 further meshes with a second transmission gear 308. The gear shafts of the first transmission gear 305 and the second transmission gear 308 extend forward to the outside of the gearbox 304 and are connected to a first transmission clamping plate 309 and a second transmission clamping plate 310 via couplings. A limiting slide plate 311 is welded to the front end of the gearbox 304. The limiting slide plate 311 has a guide groove parallel to the length direction of the workbench 1. The bottoms of the first transmission clamping plate 309 and the second transmission clamping plate 310 are embedded in the guide groove to achieve sliding constraint.

[0032] Clamping Action: After starting the drive motor 303, the drive gear 306 rotates clockwise, driving the first transmission gear 305 on the right to rotate counterclockwise. Simultaneously, power is transmitted in the opposite direction to the second transmission gear 308 via the idler gear 307, causing it to rotate clockwise. The first transmission gear 305 pushes the first transmission clamping plate 309 to move to the left along the guide groove via the coupling, while the second transmission gear 308 pushes the second transmission clamping plate 310 to move to the right along the guide groove. The two clamping plates move synchronously towards the center until the grooves on the inner sidewalls fit against the outer wall of the pressure transmitter 2, completing the clamping process. Figure 2 The middle arrow indicates the direction of movement.

[0033] Assembly and testing process of test mechanism 4

[0034] Gas connection: A mounting platform 401 is welded to the bracket at the lower end of the workbench 1. The upper end of the mounting platform 401 is bolted to the electrical control box 402 and the air supply pump 403. The outlet of the air supply pump 403 is connected to the air supply pipe 404 through a flange. The air supply pipe 404 extends vertically upward to the table surface of the workbench 1, and its top end is connected to the right end interface of the pressure transmitter 2 through a first connecting hose 405. The left end interface of the pressure transmitter 2 is connected to the delivery pipe 407 through a second connecting hose 406. The delivery pipe 407 extends downward along the left side of the workbench 1, and a pressure gauge 408 and an electrically controlled ball valve 409 are installed sequentially on the pipe.

[0035] Pressure Resistance Test: After clamping, the operator locks the flanges of the first connecting hose 405 and the second connecting hose 406 to the interface of the pressure transmitter 2. The electrical control box 402 controls the air supply pump 403 to start, and high-pressure gas enters the pressure transmitter 2 through the gas delivery pipeline 404 and the first connecting hose 405, and then flows into the delivery pipeline 407 through the second connecting hose 406. The pressure gauge 408 displays the pressure value in the pipeline in real time. When the preset pressure is reached, the electrical control box 402 shuts off the air supply pump 403 and enters the pressure holding state. If there is no leakage in the pressure transmitter 2 and the pressure gauge 408 reading is stable, the sealing performance is deemed qualified. After the test, the electrically controlled ball valve 409 opens to release pressure.

[0036] Among them, the idler wheel 307 and gear set design of the clamping mechanism 3 ensure that the clamping plates on both sides move in opposite directions synchronously; the guide groove of the limiting slide plate 311 and the tooth groove of the clamping plate work together to improve the clamping accuracy; the left and right separate pipes of the test mechanism 4 are connected to the flange hose to achieve rapid sealing docking.

[0037] The working principle of this utility model is as follows: The operator places the pressure transmitter 2 to be tested in the middle of the workbench 1 and starts the drive motor 303 of the clamping mechanism 3. The drive motor 303 drives the drive gear 306 in the gearbox 304 to rotate. The drive gear 306 transmits power synchronously through the first transmission gear 305 meshing on the right and the idler gear 307 meshing on the left. The idler gear 307 further drives the second transmission gear 308 to rotate in the opposite direction. The first transmission gear 305 pushes the first transmission clamp 309 to move towards the center through the rack meshing with the first transmission clamp 309. The second transmission gear 308 pushes the second transmission clamp 308 to move towards the center synchronously through the rack meshing with the second transmission clamp 310. The two clamps slide in a straight line under the constraint of the guide groove of the limiting slide plate 311 until the tooth groove of the inner wall tightly clamps the pressure transmitter 2. After clamping is completed, the operator connects the first connecting hose 405 to the right end interface of the pressure transmitter 2 and the second connecting hose 406 to its left end interface to form a closed air path. Close the electrically controlled ball valve 409, start the air supply pump 403 on the mounting platform 401, and high-pressure gas is input to the pressure transmitter 2 through the gas delivery pipeline 404 and the first connecting hose 405. The pressure gauge 408 monitors the pressure value in the delivery pipeline 407 in real time. When the preset pressure threshold is reached, the electrical control box 402 controls the air supply pump 403 to stop pressurizing and enter the pressure holding stage, observing the sealing performance and stability of the pressure transmitter 2. After the test is completed, the electrically controlled ball valve 409 is opened to release pressure, and the instrument under test is disassembled.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial instrument manual pressure test bench, comprising a workbench (1), a pressure transmitter (2) is arranged in the middle of the workbench (1), characterized in that: The pressure transmitter (2) is provided with an adapter clamping mechanism (3) at the rear, and test mechanisms (4) are provided on both the left and right sides of the pressure transmitter (2); the rear end of the workbench (1) is fixed with a mounting plate (301), the middle of the mounting plate (301) is fixed with a support block (302), the support block (302) is fixed with a gearbox (304), the upper end of the gearbox (304) is fixed with a drive motor (303), the gearbox (304) is provided with a first transmission gear (305), a drive gear (306), an idler gear (307) and a second transmission gear (308) inside the gearbox (304), the drive gear (306) meshes with the first transmission gear (305) on the right and with the idler gear (307) on the left, the idler gear (307) meshes with the second transmission gear (308) on the left, and the first transmission gear (305) is connected to the first transmission clamp in front. The first transmission plate (309) and the second transmission gear (308) are connected to the second transmission clamping plate (310) in front of the gearbox (304). The first transmission clamping plate (309) and the second transmission clamping plate (310) are slidably connected to the limit sliding plate (311). The lower end of the workbench (1) is fixed to the mounting platform (401). The upper end of the mounting platform (401) is fixed to the electrical control box (402) and the air supply pump (403). The air supply pump (403) is connected to the air supply pipeline (404) at the air supply end. The upper end of the air supply pipeline (404) is connected to the pressure transmitter (2) through the first connecting hose (405). The left end of the pressure transmitter (2) is connected to the conveying pipeline (407) through the second connecting hose (406). The pressure gauge (408) and the electric ball valve (409) are installed on the conveying pipeline (407).

2. An industrial instrument manual pressure resistance test bench according to claim 1, characterized in that: The first transmission clamp (309) and the second transmission clamp (310) are provided with racks at one end near the gearbox body (304), and the racks mesh with the first transmission gear (305) and the second transmission gear (308) respectively.

3. The industrial instrument manual pressure resistance test table according to claim 1, characterized in that: The gas transmission pipe (404) extends upward to the upper end of the workbench (1) and is located to the right of the pressure transmitter (2), while the delivery pipe (407) is located to the left of the pressure transmitter (2).

4. The industrial instrument manual pressure resistance test bench according to claim 1, characterized in that: The first connecting hose (405) and the second connecting hose (406) are respectively connected to the gas transmission pipeline (404) and the delivery pipeline (407) via flanges.

5. The manual withstand voltage test bench for industrial instruments according to claim 1, characterized in that: The pressure gauge (408) and the electrically controlled ball valve (409) are installed sequentially along the extension direction of the delivery pipeline (407).

6. The manual withstand voltage test bench for industrial instruments according to claim 1, characterized in that: The limiting slide plate (311) is provided with a guide groove that matches the sliding trajectory of the first transmission clamp (309) and the second transmission clamp (310).

7. The manual withstand voltage test bench for industrial instruments according to claim 1, characterized in that: The inner sidewalls of the first transmission clamp (309) and the second transmission clamp (310) are provided with clamping tooth grooves.

8. The manual withstand voltage test bench for industrial instruments according to claim 1, characterized in that: The electrical control box (402) and the air supply pump (403) are fixed side by side on the upper end of the mounting platform (401).

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