Gauge adjusting table for pressure gauge

Abstract

The utility model relates to the technical field of pressure gauge debugging, and discloses a pressure gauge adjusting table which comprises a box body, a precise one-way valve vacuum generator and a pneumatic slide valve, a sealing cover is detachably installed on the top of the box body, and a high-pressure-resistant pressure gauge quick-change connector used for installation is arranged on the top of the sealing cover. The top of the high-pressure-resistant pressure gauge quick-change connector is in threaded connection with a calibrated pressure gauge, the upper surface of the sealing cover is in threaded connection with a calibration sample pressure gauge used for observation, and a bottom plate used for fixing is detachably installed at the bottom of the inner side wall of the box body. According to the pressure gauge adjusting table, through cooperative arrangement of the box body and the sealing cover, the device can be more convenient and practical, the size of the device can be effectively reduced, a worker can move the device conveniently when adjusting a gauge when using the device, and the situation that a traditional gauge adjusting device can only be fixed at one position and cannot be moved conveniently is changed. When a worker adjusts a meter, the worker needs to run back and forth.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge debugging, and specifically relates to a pressure gauge calibration table. Background Technique

[0002] A pressure gauge calibration table, usually referring to a pressure gauge calibration bench, is an auxiliary device for calibrating pressure and differential pressure transmitters, ordinary precision pressure gauges, pressure switches, pressure sensors and other pressure instruments. It provides a stable pressure source for the calibration work and cooperates with a pressure standard device to complete the detection and calibration work. The pressure gauge calibration bench uses a gas-liquid booster as the pressure source and compressed air as the power source. The output liquid pressure is proportional to the driving gas source pressure. By adjusting the driving gas source pressure, the corresponding liquid pressure can be obtained. According to different measured parts, different gas-liquid boosters are selected for the pressurization test, and the pressurization medium can be water or hydraulic oil.

[0003] When the prior art is actually used, the following problems exist:

[0004] 1. The prior art equipment has a large volume, relatively complex internal components, a high manufacturing cost, a cumbersome operation of the calibration table, and low efficiency, and cannot meet the requirements of modern industry for high-efficiency and accurate debugging;

[0005] 2. The prior art may not be able to conveniently calibrate and detect the calibration table regularly. These problems not only affect the efficiency of the calibration work, but may also cause production accidents due to inaccurate calibration. Content of the Utility Model

[0006] (I) Technical Problems to be Solved

[0007] In order to overcome the above defects of the prior art, the utility model provides a pressure gauge calibration table, which solves the problems in the prior art:

[0008] 1. The prior art equipment has a large volume, relatively complex internal components, a high manufacturing cost, a cumbersome operation of the calibration table, and low efficiency, and cannot meet the requirements of modern industry for high-efficiency and accurate debugging;

[0009] 2. The prior art may not be able to conveniently calibrate and detect the calibration table regularly. These problems not only affect the efficiency of the calibration work, but may also cause production accidents due to inaccurate calibration.

[0010] (II) Technical Solutions

[0011] To achieve the above object, the utility model is realized by the following technical solutions: A pressure gauge calibration table, comprising a box body, a precision one-way valve vacuum generator and a pneumatic slide valve. A sealing cover is detachably installed on the top of the box body. A high-pressure resistant pressure gauge quick-change joint for installation is provided on the top of the sealing cover. A pressure gauge to be calibrated is threadedly connected to the top of the high-pressure resistant pressure gauge quick-change joint. A calibration sample pressure gauge for observation is threadedly connected to the upper surface of the sealing cover. A bottom plate for fixation is detachably installed at the bottom of the inner side wall of the box body.

[0012] Preferably, a threaded hole for connection is provided on the bottom surface of the inner side wall of the box body, and a screw rod for fixation is threadedly connected to the inner side wall of the threaded hole.

[0013] Preferably, an exhaust switch is fixedly installed on the upper surface of the sealing cover, and a high-pressure reducing valve electromagnetic switch is fixedly installed on the upper surface of the sealing cover.

[0014] Preferably, a medium-pressure reducing valve electromagnetic switch is fixedly installed on the upper surface of the sealing cover, and a low-pressure reducing valve electromagnetic switch is fixedly installed on the upper surface of the sealing cover.

[0015] Preferably, a high-pressure reducing valve is fixedly installed on the upper surface of the sealing cover, a medium-pressure reducing valve is fixedly installed on the upper surface of the sealing cover, and a low-pressure reducing valve is fixedly installed on the upper surface of the sealing cover.

[0016] Preferably, a pneumatic component joint is fixedly installed on the top of the sealing cover, and a precision exhaust valve is fixedly installed on the top of the sealing cover.

[0017] Preferably, a DC power supply box for power supply is fixedly installed on the upper surface of the bottom plate, a high-pressure resistant solenoid valve is fixedly installed on the upper surface of the bottom plate, and a high-pressure resistant nylon compressed air pipe for connection is detachably installed at one end of the high-pressure resistant solenoid valve.

[0018] Preferably, a high-pressure resistant one-way valve is fixedly installed on the upper surface of the bottom plate, a seven-hole high-pressure resistant air distribution row is fixedly installed on the upper surface of the bottom plate, a full-copper high-pressure resistant ball valve is fixedly installed on the side of the seven-hole high-pressure resistant air distribution row, and a silencer is fixedly installed at one end of the full-copper high-pressure resistant ball valve.

[0019] (III) Beneficial effects

[0020] The utility model provides a pressure gauge calibration table, which has the following beneficial effects:

[0021] 1. The pressure gauge calibration table can be made more convenient and practical through the cooperation between the box body and the sealing cover, effectively reducing the volume of the device. When the staff adjusts the gauge using the device, they can move the device more conveniently, changing the traditional calibration device that can only be fixed in one place. When the staff calibrates the gauge, they no longer need to run back and forth, improving the working efficiency of the device to meet the high-efficiency and precision requirements of modern industry for calibration tables.

[0022] 2. The pressure gauge calibration table can be made more convenient and stable through the cooperation between the high-pressure resistant pressure gauge quick-change joint, the pressure gauge to be calibrated, and the calibration sample pressure gauge. With the cooperation between the high-pressure resistant pressure gauge quick-change joint and the pressure gauge to be calibrated, after the staff calibrates one gauge, they can conveniently remove the gauge and replace it with the next one for calibration, improving the working efficiency of the workers. With the setting of the calibration sample pressure gauge, the staff can have a more accurate reference standard when calibrating the pressure gauge to be calibrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Structural schematic diagram of the present utility model;

[0024] Figure 2 Structural schematic diagram of the sealing cover of the present utility model;

[0025] Figure 3 Structural schematic diagram of the box body of the present utility model;

[0026] Figure 4 Structural schematic diagram of the calibration sample pressure gauge of the present utility model;

[0027] Figure 5 Structural schematic diagram of the pneumatic slide valve of the present utility model;

[0028] Figure 6 Structural schematic diagram of the precision one-way valve vacuum generator of the present utility model.

[0029] In the figure: 1. Exhaust switch; 2. High-pressure reducing valve electromagnetic switch; 3. Medium-pressure reducing valve electromagnetic switch; 4. Low-pressure reducing valve electromagnetic switch; 5. High-pressure resistant pressure gauge quick-change joint; 6. Pressure gauge to be calibrated; 7. High-pressure reducing valve; 8. Medium-pressure reducing valve; 9. Low-pressure reducing valve; 10. Calibration sample pressure gauge; 11. Pneumatic component joint; 12. Precision exhaust valve; 13. DC power supply box; 14. High-pressure resistant nylon air pressure pipe; 15. High-pressure resistant solenoid valve; 16. High-pressure resistant one-way valve; 17. Seven-hole high-pressure resistant air distribution row; 18. All-copper high-pressure resistant ball valve; 19. Silencer; 20. Precision one-way valve vacuum generator; 21. Pneumatic slide valve; 22. Box body; 23. Sealing cover; 24. Threaded hole; 25. Screw; 26. Base plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Please refer to Figures 1 to 6 , the present utility model provides a technical solution: a pressure gauge calibration table, which is mainly applied to the scenario of calibrating a pressure gauge.

[0032] Embodiment 1:

[0033] Please refer to Figures 1 to 6 , in order to better protect the internal components of the device, a box body 22 is provided;

[0034] It includes a box body 22. A threaded hole 24 for connection is opened on the bottom surface of the inner side wall of the box body 22. A screw rod 25 for fixation is threadedly connected to the inner side wall of the threaded hole 24. Through the cooperation between the threaded hole 24 and the screw rod 25, the bottom plate 26 can be firmly installed on the box body 22.

[0035] Embodiment 2:

[0036] Please refer to Figures 1 to 6 , in order to make each component of the device have a more suitable fixed position, a bottom plate 26 is provided;

[0037] The bottom of the inner side wall of the box body 22 is detachably installed with a bottom plate 26 for fixation. A DC power supply box 13 for power supply is fixedly installed on the upper surface of the bottom plate 26. A high-pressure-resistant solenoid valve 15 is fixedly installed on the upper surface of the bottom plate 26. One end of the high-pressure-resistant solenoid valve 15 is detachably installed with a high-pressure-resistant nylon compressed air pipe 14 for connection. Through the setting of the DC power supply box 13, the device can be better powered. Through the setting of the high-pressure-resistant nylon compressed air pipe 14, the gas can flow smoothly between the various components of the device. Through the high-pressure-resistant solenoid valve 15, the flow or stop of the gas can be more conveniently controlled. A high-pressure-resistant one-way valve 16 is fixedly installed on the upper surface of the bottom plate 26. A seven-hole high-pressure-resistant air distribution row 17 is fixedly installed on the upper surface of the bottom plate 26. A full-copper high-pressure-resistant ball valve 18 is fixedly installed on the side of the seven-hole high-pressure-resistant air distribution row 17. A silencer 19 is fixedly installed at one end of the full-copper high-pressure-resistant ball valve 18. Through the cooperation of the high-pressure-resistant one-way valve 16, the seven-hole high-pressure-resistant air distribution row 17 and the full-copper high-pressure-resistant ball valve 18, the gas flow direction is controlled, and the noise can be reduced through the silencer 19 when needed.

[0038] Embodiment 3:

[0039] Please refer toFigures 1 to 6 , in order to make it more convenient for the staff to operate, a sealing cover 23 is provided;

[0040] The sealing cover 23 is detachably installed on the top of the box body 22. An exhaust switch 1 is fixedly installed on the upper surface of the sealing cover 23. A high-pressure reducing valve electromagnetic switch 2 is fixedly installed on the upper surface of the sealing cover 23. A medium-pressure reducing valve electromagnetic switch 3 is fixedly installed on the upper surface of the sealing cover 23. A low-pressure reducing valve electromagnetic switch 4 is fixedly installed on the upper surface of the sealing cover 23. A high-pressure reducing valve 7 is fixedly installed on the upper surface of the sealing cover 23. A medium-pressure reducing valve 8 is fixedly installed on the upper surface of the sealing cover 23. A low-pressure reducing valve 9 is fixedly installed on the upper surface of the sealing cover 23. A pneumatic component joint 11 is fixedly installed on the top of the sealing cover 23. A precision exhaust valve 12 is fixedly installed on the top of the sealing cover 23. Through the exhaust switch 1, the high-pressure reducing valve electromagnetic switch 2, the medium-pressure reducing valve electromagnetic switch 3, the low-pressure reducing valve electromagnetic switch 4, the high-pressure reducing valve 7, the medium-pressure reducing valve 8, the low-pressure reducing valve 9, the pneumatic component joint 11 and the precision exhaust valve 12, these components cooperate to control and regulate the gas pressure and monitor the pressure change during the calibration process.

[0041] All the electrical components mentioned in this article are electrically connected to the external main controller and 220V mains electricity, and the main controller can be a conventional known device such as a computer for control.

[0042] In the present utility model, the working steps of the device are as follows:

[0043] 1. First, ensure that all components are installed correctly, the air source and power supply are firmly connected, and open the DC power supply box 13 to provide power for the electromagnetic switches and pressure reducing valves, etc.;

[0044] 2. Secondly, connect the pressure gauge to be calibrated 6 to the meter adjustment table through the high-pressure resistant pressure gauge quick-change joint 5, observe the calibration sample pressure gauge 10, and confirm that its reading is accurate as the reference standard for calibration;

[0045] 3. Then, adjust the pressure values of the high-pressure reducing valve 7, the medium-pressure reducing valve 8, and the low-pressure reducing valve 9 as needed. Through the corresponding high-pressure reducing valve electromagnetic switch 2, medium-pressure reducing valve electromagnetic switch 3, and low-pressure reducing valve electromagnetic switch 4, control the opening and closing of the pressure reducing valves, and use the pneumatic slide valve 21 and the precision one-way valve vacuum generator 20 to control and regulate the gas pressure more precisely. Observe the reading of the pressure gauge to be calibrated 6 and compare it with the reading of the calibration sample pressure gauge 10, record the difference, and adjust the calibration parameters of the pressure gauge to be calibrated 6 according to the difference until its reading is the same as or within the specified error range of the reading of the calibration sample pressure gauge 10;

[0046] 4. Finally, turn off all electromagnetic switches and pressure reducing valves, disconnect the gas source connection, remove the pressure gauge to be calibrated 6 from the quick-change connector 5 of the high-pressure resistant pressure gauge, mark or record the calibration result, clean the pressure gauge adjustment table, and prepare for the next calibration work.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure gauge calibration bench, comprising a box body (22), a precision one-way valve vacuum generator (20) and a pneumatic slide valve (21), characterized in that: A sealing cover (23) is detachably installed on the top of the box body (22). A high-pressure resistant pressure gauge quick-change joint (5) for installation is provided on the top of the sealing cover (23). A pressure gauge to be calibrated (6) is threadedly connected to the top of the high-pressure resistant pressure gauge quick-change joint (5). A calibrated sample pressure gauge (10) for observation is threadedly connected to the upper surface of the sealing cover (23). A bottom plate (26) for fixation is detachably installed at the bottom of the inner side wall of the box body (22).

2. The pressure gauge calibration table according to claim 1, characterized in that: Threaded holes (24) for connection are formed in the bottom surface of the inner side wall of the box body (22), and a screw rod (25) for fixation is threadedly connected to the inner side wall of the threaded holes (24).

3. A pressure gauge calibration table according to claim 1, characterized in that: An exhaust switch (1) is fixedly installed on the upper surface of the sealing cover (23), and a high-pressure reducing valve electromagnetic switch (2) is fixedly installed on the upper surface of the sealing cover (23).

4. A pressure gauge calibration bench according to claim 1, characterized in that: A medium-pressure reducing valve electromagnetic switch (3) is fixedly installed on the upper surface of the sealing cover (23), and a low-pressure reducing valve electromagnetic switch (4) is fixedly installed on the upper surface of the sealing cover (23).

5. A pressure gauge calibration table according to claim 1, characterized in that: A high-pressure reducing valve (7) is fixedly installed on the upper surface of the sealing cover (23), a medium-pressure reducing valve (8) is fixedly installed on the upper surface of the sealing cover (23), and a low-pressure reducing valve (9) is fixedly installed on the upper surface of the sealing cover (23).

6. A pressure gauge calibration bench according to claim 1, characterized in that: A pneumatic component joint (11) is fixedly installed on the top of the sealing cover (23), and a precision exhaust valve (12) is fixedly installed on the top of the sealing cover (23).

7. A pressure gauge calibration table according to claim 1, characterized in that: A DC power supply box (13) for power supply is fixedly installed on the upper surface of the bottom plate (26). A high-pressure resistant solenoid valve (15) is fixedly installed on the upper surface of the bottom plate (26). One end of the high-pressure resistant solenoid valve (15) is detachably installed with a high-pressure resistant nylon compressed air pipe (14) for connection.

8. A pressure gauge calibration table according to claim 1, characterized in that: A high-pressure resistant check valve (16) is fixedly installed on the upper surface of the bottom plate (26). A seven-hole high-pressure resistant air distribution row (17) is fixedly installed on the upper surface of the bottom plate (26). A full-copper high-pressure resistant ball valve (18) is fixedly installed on the side of the seven-hole high-pressure resistant air distribution row (17). A silencer (19) is fixedly installed at one end of the full-copper high-pressure resistant ball valve (18).

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