Pressure sensor calibration device

Abstract

The utility model relates to the technical field of non-standard instrument calibration, in particular to a pressure sensor calibration device which comprises a base, a control panel is fixedly installed on the front side of the upper end of the base, a support seat is fixedly installed on the rear side of the upper end of the base, a plurality of fixing grooves are formed in the upper end of the support seat, and a pneumatic pull rod is fixedly installed in the middle of the upper end of the support seat. When the device is used, the pneumatic pull rod is started through an external air source to pull the limiting sliding rod, the limiting sliding rod slides downwards in the limiting sliding hole in a directional mode, then the hanging seat at the upper end of the limiting sliding rod drives the supporting plate upper pressing seat to press downwards, the shaft wheel seat is matched with the shaft wheel to roll on the inner wall of the limiting inner groove, and therefore pressure is stably exerted on the pressure sensor. The plurality of pressure sensors record pressure data, and pressure compensation is realized according to the length of the support plate, so that calculation and display are carried out on the control panel, comparison and calibration are carried out on the data recorded on the tension meter, and the accuracy of calibration data can be ensured while the calibration efficiency is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of non-standard instrument calibration, and particularly relates to a pressure sensor calibration device. Background Technique

[0002] A pressure sensor is one of the most commonly used sensors in industrial practice. It is widely used in various industrial automatic control environments, involving many industries such as water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, electric power, ships, machine tools, pipelines, etc. Hereinafter, the principles and applications of some commonly used sensors will be briefly introduced. There is also a medical pressure sensor. Equipment calibration refers to the act of testing and adjusting a measuring device or a standard part to understand its accuracy.

[0003] Before a pressure sensor is used, it needs to be calibrated. Common calibration devices for pressure sensors are mostly single-body calibrations, which cannot synchronously calibrate multiple pressure sensors. Inevitably, corresponding errors will occur during single and multiple calibrations, which leads to deviations when pressure sensors with non-uniform calibration standards are used. Therefore, those skilled in the art have provided a pressure sensor calibration device to solve the problems raised in the above background technique. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a pressure sensor calibration device, which includes a base. A control panel is fixedly installed on the front side of the upper end of the base, and a support seat is fixedly installed on the rear side of the upper end of the base. A plurality of fixing grooves are opened on the upper end of the support seat, and a pneumatic pull rod is fixedly installed in the middle of the upper end of the support seat. A slidable calibration group is arranged in the middle of the upper end of the support seat, and the calibration group is fixedly installed on the pneumatic pull rod. A triangular hanging bracket is fixedly installed along the side of the upper end of the base, and a hanging bracket dynamometer is arranged in the middle of the triangular hanging bracket;

[0005] The support seat includes a vertical frame, a stable support seat, a limit inner groove, a limit collar and a limit sliding hole. The vertical frame is fixedly installed along the edge of the rear side of the upper end surface of the base. The stable support seat is fixedly installed on the inner side of the vertical frame. The fixing grooves are opened on the upper end of the stable support seat. The same limit collar is fixedly installed on the inner side of the stable support seat. The limit inner groove is opened on the upper part of the inner side end surface of the vertical frame;

[0006] The calibration group includes a hanging seat, a support plate, a pressing seat, a shaft wheel seat, a shaft wheel, a limit sliding rod and a return spring. The upper end of the pneumatic pull rod is fixedly installed with the limit sliding rod. The limit sliding rod passes through the limit sliding hole and is fixedly installed with the hanging seat. The hanging seat is suspended at the lower end of the dynamometer, and the support plate is fixedly installed annularly at the rear side of the hanging seat.

[0007] Preferably: The pressure sensors are installed in the fixing grooves in a limited manner, and a plurality of pressure sensors are connected to the control panel through wire control plugging.

[0008] Preferably, a limiting sliding hole is formed in the middle of the limiting collar, and the limiting sliding hole is correspondingly arranged and slid with the calibration group.

[0009] Preferably, a return spring is arranged between the hanging seat and the limiting collar, and the return spring is sleeved on the limiting sliding rod.

[0010] Preferably, a pressing seat is fixedly installed at the other end of the support plate, and the pressing seat can make the applied pressure balanced and reduce the occurrence of overpressure.

[0011] Preferably, a shaft wheel seat is fixedly installed on the inner side of the pressing seat, a shaft wheel is sleeved on the shaft wheel seat, the shaft wheel seat is slidably arranged in the limiting inner groove, and the shaft wheel rolls on the inner wall of the limiting inner groove.

[0012] The technical effects and advantages of the present utility model:

[0013] When the present utility model is in use, the pneumatic pull rod is started by an external air source to pull the limiting sliding rod. The limiting sliding rod slides downward directionally in the limiting sliding hole, and the tensiometer records the corresponding pulling force. Then, the hanging seat at the upper end of the limiting sliding rod drives the pressing seat on the support plate to press down. The shaft wheel seat cooperates with the shaft wheel to roll on the inner wall of the limiting inner groove, so as to stably press the pressure sensor. A plurality of pressure sensors record the pressure data of the pressing, and perform pressure compensation according to the length of the support plate, so as to perform measurement and display on the control panel, and compare and calibrate with the data recorded on the tensiometer. While maintaining the calibration efficiency, it can also ensure the accuracy of the calibration data. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram provided by the present application;

[0015] Figure 2 is the structural schematic diagram of the support seat provided by the present application;

[0016] Figure 3 is the structural schematic diagram of the calibration group provided by the present application;

[0017] In the figure: 1, base; 2, control panel; 3, support seat; 4, fixed groove; 5, calibration group; 6, triangular hanging bracket; 7, tensiometer; 8, pressure sensor; 9, pneumatic pull rod;

[0018] 31, vertical frame; 32, stable support seat; 34, limiting inner groove; 35, limiting collar; 36, limiting sliding hole;

[0019] 51, hanging seat; 52, support plate; 53, pressing seat; 54, shaft wheel seat; 55, shaft wheel; 56, limiting sliding rod; 57, return spring. Detailed Embodiment

[0020] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0021] Please refer to Figures 1 to 3 , in this embodiment, a pressure sensor calibration device is provided, including a base 1. A control panel 2 is fixedly installed on the front side of the upper end of the base 1. A support seat 3 is fixedly installed on the rear side of the upper end of the base 1. A plurality of fixing grooves 4 are formed in the upper end of the support seat 3. A pressure sensor 8 is installed in the fixing groove 4 in a limited way. A plurality of pressure sensors 8 are connected to the control panel 2 by wire control. A pneumatic pull rod 9 is fixedly installed in the middle of the upper end of the support seat 3. A slidable calibration group 5 is arranged in the middle of the upper end of the support seat 3. The calibration group 5 is fixedly installed on the pneumatic pull rod 9. A triangular hanging bracket 6 is fixedly installed along the side of the upper end of the base 1. A hanging bracket tensiometer 7 is arranged in the middle of the triangular hanging bracket 6;

[0022] The support seat 3 includes a vertical frame 31, a stable support seat 32, a limit inner groove 34, a limit collar 35 and a limit sliding hole 36. The vertical frame 31 is fixedly installed along the edge of the rear side of the upper end surface of the base 1. The stable support seat 32 is fixedly installed on the inner side of the vertical frame 31. The fixing groove 4 is formed in the upper end of the stable support seat 32. The same limit collar 35 is fixedly installed on the inner side of the stable support seat 32. A limit sliding hole 36 is formed in the middle of the limit collar 35. The limit sliding hole 36 is arranged corresponding to the calibration group 5 for sliding. A limit inner groove 34 is formed in the upper part of the inner side end surface of the vertical frame 31;

[0023] The calibration group 5 includes a hanging seat 51, a support plate 52, a pressing seat 53, a shaft wheel seat 54, a shaft wheel 55, a limit sliding rod 56 and a return spring 57. The limit sliding rod 56 is fixedly installed at the upper end of the pneumatic pull rod 9. The limit sliding rod 56 passes through the limit sliding hole 36 and is fixedly installed with the hanging seat 51. The hanging seat 51 is suspended at the lower end of the tensiometer 7. A return spring 57 is arranged between the hanging seat 51 and the limit collar 35. The return spring 57 is sleeved on the limit sliding rod 56. The support plate 52 is fixedly installed in a ring shape on the rear side of the hanging seat 51. The other end of the support plate 52 is fixedly installed with the pressing seat 53. The pressing seat 53 can make the applied pressure balanced and reduce the occurrence of overpressure. The shaft wheel seat 54 is fixedly installed on the inner side of the pressing seat 53. The shaft wheel 55 is sleeved on the shaft wheel seat 54. The shaft wheel seat 54 is slidably arranged in the limit inner groove 34. The shaft wheel 55 rolls on the inner wall of the limit inner groove 34.

[0024] The working principle of the present utility model is:

[0025] When the utility model is in use, a plurality of pressure sensors 8 are pre-placed and fixed in the fixed groove 4. The pneumatic pull rod 9 is started by an external air source to pull the limit slide rod 56. The limit slide rod 56 slides downward in the limit slide hole 36 in a directional manner, and the tensiometer 7 records the corresponding tensile force. Then, the suspension seat 51 at the upper end of the limit slide rod 56 drives the pressure seat 53 on the support plate 52 to press downward. The shaft wheel seat 54 cooperates with the shaft wheel 55 to roll on the inner wall of the limit inner groove 34, so as to stably apply pressure to the pressure sensor 8. The plurality of pressure sensors 8 record the pressure data during the pressure application, and perform pressure compensation according to the length of the support plate 52, so as to perform measurement and display on the control panel 2, and compare and calibrate with the data recorded on the tensiometer 7. Therefore, while maintaining the calibration efficiency, the accuracy of the calibration data can also be ensured.

[0026] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model shall be implemented by conventional means in the art without special instructions and limitations.

Claims

1. A pressure sensor calibration device, comprising a base (1), characterized in that: A control panel (2) is fixedly installed on the front side of the upper end of the base (1); a support seat (3) is fixedly installed on the rear side of the upper end of the base (1); a plurality of fixing grooves (4) are provided on the upper end of the support seat (3); a pneumatic pull rod (9) is fixedly installed on the middle part of the upper end of the support seat (3); a slidable calibration group (5) is provided on the middle part of the upper end of the support seat (3); the calibration group (5) is fixedly installed on the pneumatic pull rod (9); a triangular hanger (6) is fixedly installed on the side of the upper end of the base (1); a hanger dynamometer (7) is provided in the middle part of the triangular hanger (6); The support seat (3) comprises a vertical frame (31), a stable frame seat (32), a limiting inner groove (34), a limiting collar (35) and a limiting sliding hole (36); the vertical frame (31) is fixedly installed along the edge of the rear side of the upper end surface of the base (1); the stable frame seat (32) is fixedly installed on the inner side of the vertical frame (31); the fixing groove (4) is arranged at the upper end of the stable frame seat (32); the same limiting collar (35) is fixed on the inner side of the stable frame seat (32); and the limiting inner groove (34) is arranged on the upper part of the inner side end surface of the vertical frame (31); The calibration group (5) comprises a suspension seat (51), a support plate (52), a pressure seat (53), an axle wheel seat (54), an axle wheel (55), a limit slide bar (56) and a reset spring (57); the limit slide bar (56) is fixedly installed on the upper end of the pneumatic pull rod (9); the limit slide bar (56) passes through the limit slide hole (36) and is fixedly installed on the suspension seat (51); the suspension seat (51) is suspended on the lower end of the dynamometer (7); and the support plate (52) is fixedly installed on the rear side of the suspension seat (51) in an annular shape.

2. A pressure sensor calibration device according to claim 1, characterized in that: A pressure sensor (8) is installed in the fixing groove (4) at a limit position, and a plurality of pressure sensors (8) are plugged into the control panel (2) via wire control.

3. A pressure sensor calibration device according to claim 1, characterized in that: A limiting sliding hole (36) is provided in the middle of the limiting sleeve ring (35), and the limiting sliding hole (36) is arranged to slide correspondingly to the calibration group (5).

4. A pressure sensor calibration device according to claim 1, characterized in that: A return spring (57) is provided between the hanging seat (51) and the limiting collar (35), and the return spring (57) is sleeved on the limiting slide rod (56).

5. A pressure sensor calibration device according to claim 4, characterized in that: The other end of the support plate (52) is fixedly mounted with a pressure seat (53).

6. A pressure sensor calibration device according to claim 5, characterized in that: The inner side of the pressure seat (53) is fixedly mounted with a shaft wheel seat (54), the shaft wheel seat (54) is sleeved with a shaft wheel (55), the shaft wheel seat (54) is slidably arranged in the limiting inner groove (34), and the shaft wheel (55) rolls on the inner wall of the limiting inner groove (34).

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