Pressure sensor calibration device

Abstract

The utility model discloses a pressure sensor calibration device, and relates to the technical field of pressure sensor calibration. The display screen is fixed on the left side of the upper end face in the placing bin, the fixed bottom plate is fixed on the right side of the upper end face in the placing bin, the folding assembly is arranged on the rear side of the fixed bottom plate, and the testing assembly is arranged at the upper end of the front side of the folding assembly. During testing, the rotating support plate can be rotated to be perpendicular to the fixed bottom plate, the limiting insertion rod can be inserted into the mounting pin hole, the rotating support plate can be completely limited, and the standard testing pressure gauge can be driven to move up and down through the arranged electric push rod. The arranged rubber cushion layer can be located between the standard test pressure gauge and the pressure sensor to be tested, the buffering effect can be achieved, under the effect of the electric push rod, the standard test pressure gauge and the pressure sensor to be tested can display and modify the displayed numerical value through the display screen, accurate testing can be achieved, and meanwhile the device can be folded, stored and convenient to carry.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure sensor calibration, in particular to a pressure sensor calibration device. Background Art

[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to certain rules. A pressure sensor is usually composed of a pressure sensitive element and a signal processing unit. According to different test pressure types, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. Pressure sensors are the most commonly used sensors in industrial practice. They are widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemicals, oil wells, electric power, ships, machine tools, pipelines and many other industries.

[0003] Pressure sensors are widely used in the industrial control industry. However, after long-term use, pressure sensors will inevitably produce certain errors with the initial standard values, which may cause inaccurate displayed values. However, returning them to the manufacturer for calibration is time-consuming. At the same time, since most pressure sensor calibration equipment is large in size, it is difficult for staff to quickly adjust and transport them, which greatly reduces the scope of application of the equipment and makes it inconvenient to carry to the site. Therefore, we propose a pressure sensor calibration device to solve this problem. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a pressure sensor calibration device, which can effectively solve the problems of the prior art.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a pressure sensor calibration device, comprising a placement chamber and a box cover rotatably connected to one side of the upper end surface of the placement chamber, and also comprising:

[0007] A display screen is fixed on the left side of the inner upper end surface of the placement chamber, and the display screen can be electrically connected to the pressure sensor to be tested;

[0008] The fixed bottom plate is fixed to the right side of the inner upper end surface of the storage bin, and the cross section of the fixed bottom plate is an "H"-shaped structure;

[0009] The folding assembly is set on the rear side of the fixed bottom plate to facilitate storage after the test;

[0010] The test assembly is arranged at the upper end of the front side of the folding assembly and is used to test the pressure sensor to be tested.

[0011] Furthermore, the folding component includes a rotating support plate, a mounting pin hole and a limiting insertion rod. The rotating support plate is rotatably connected to the rear side of the fixed base plate through a rotating shaft. The mounting pin holes are symmetrically distributed on the left and right sides of the fixed base plate. The limiting insertion rod is symmetrically arranged on the left and right sides of the rotating support plate, and the cross-section of the limiting insertion rod is a "U"-shaped structure. The other end of the limiting insertion rod can be inserted into the inside of the mounting pin hole.

[0012] Furthermore, a circular groove is provided on the upper end surface of the fixed bottom plate, and a pressure sensor to be tested is arranged inside the circular groove.

[0013] Furthermore, the test assembly includes an electric push rod, a standard test pressure device and a rubber pad. The electric push rod is fixed at the upper end of the front side of the rotating support plate, the standard test pressure device is fixed at the output end of the electric push rod, the rubber pad is arranged at the central position of the standard test pressure device, and the bottom of the rubber pad can contact the pressure sensor to be tested.

[0014] Furthermore, a receiving groove is provided at the inner upper end of the placement bin, and the receiving groove is located on the front side of the fixed bottom plate, a contouring layer is provided at the inner upper end of the receiving groove, and the upper end of the contouring layer can contact the standard test pressure device and the electric push rod.

[0015] Furthermore, a sponge layer is provided at the inner upper end of the upper cover of the box body, and the sponge layer can be in contact with the rotating support plate.

[0016] Furthermore, a lifting handle is fixed at the front center of the storage bin.

[0017] The utility model has the following beneficial effects:

[0018] During testing, the utility model can rotate the rotating support plate to a perpendicular angle with the fixed base plate, and then, the limiting plug rod can be inserted into the inside of the mounting pin hole, so that the rotating support plate can be completely limited for subsequent testing. The standard test pressure gauge can be driven to move up and down by the provided electric push rod, and the provided rubber pad layer can be located between the standard test pressure gauge and the pressure sensor to be tested, which can play a buffering role. Under the action of the electric push rod, the standard test pressure gauge and the pressure sensor to be tested can display and modify the displayed values ​​through the display screen, which can perform accurate testing and can also be folded and stored for easy carrying. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a top view schematic diagram of the pressure sensor calibration device of the utility model;

[0021] Figure 2 This is a bottom view schematic diagram of the pressure sensor calibration device of the utility model;

[0022] Figure 3 It is a top view schematic diagram of the test assembly of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Placement bin; 2. Display screen; 3. Fixed bottom plate; 4. Contour layer; 5. Rotating support plate; 6. Electric push rod; 7. Placement round groove; 8. Box cover; 9. Sponge layer; 10. Lifting handle; 11. Standard test pressure device; 12. Rubber cushion layer; 13. Installation pin hole; 14. Limiting rod; 15. Receiver tank. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] See also Figure 1-3 As shown, the utility model is a pressure sensor calibration device, including a placement chamber 1 and a box cover 8 rotatably connected to one side of the upper end surface of the placement chamber 1, and also includes:

[0027] The display screen 2 is fixed on the left side of the inner upper end surface of the placement bin 1, and the display screen 2 can be electrically connected to the pressure sensor to be tested. The fixed bottom plate 3 is fixed on the right side of the inner upper end surface of the placement bin 1, and the cross section of the fixed bottom plate 3 is an "H"-shaped structure. The upper end surface of the fixed bottom plate 3 is provided with a placement circular groove 7, and the pressure sensor to be tested is arranged inside the placement circular groove 7. The placement circular groove 7 can limit the pressure sensor to be tested to prevent it from being offset, and the pressure sensor to be tested can be electrically connected to the display screen 2, so that after the subsequent test assembly is tested, it can be compared and modified with the standard test pressure device 11;

[0028] The folding assembly is arranged at the rear side of the fixed bottom plate 3, so as to facilitate storage after the test is completed. The folding assembly includes a rotating support plate 5, a mounting pin hole 13 and a limiting plug rod 14. The rotating support plate 5 is rotatably connected to the rear side of the fixed bottom plate 3 through a rotating shaft. The mounting pin holes 13 are symmetrically distributed and opened on the left and right sides of the fixed bottom plate 3. The limiting plug rod 14 is symmetrically penetrated on the left and right sides of the rotating support plate 5, and the cross section of the limiting plug rod 14 is a "U"-shaped structure. The other end of the limiting plug rod 14 can be inserted into the inside of the mounting pin hole 13. The rotating support plate 5 can be rotated to a vertical angle with the fixed bottom plate 3, and then the limiting plug rod 14 can be inserted into the inside of the mounting pin hole 13, so that the rotating support plate 5 can be completely limited for subsequent testing;

[0029] The test assembly is arranged at the upper front end of the folding assembly and is used to test the pressure sensor to be tested. The test assembly includes an electric push rod 6, a standard test pressure device 11 and a rubber pad 12. The electric push rod 6 is fixed to the upper front end of the rotating support plate 5, and the standard test pressure device 11 is fixed to the output end of the electric push rod 6. The rubber pad 12 is arranged at the central position of the standard test pressure device 11, and the bottom of the rubber pad 12 can contact the pressure sensor to be tested. The standard test pressure device 11 can be driven to move up and down by the arranged electric push rod 6, and the arranged rubber pad 12 can be located between the standard test pressure device 11 and the pressure sensor to be tested, which can play a buffering role. Under the action of the electric push rod 6, the standard test pressure device 11 and the pressure sensor to be tested can display and modify the displayed values ​​through the display screen 2.

[0030] A receiving groove 15 is provided at the upper inner end of the placement bin 1, and the receiving groove 15 is located on the front side of the fixed bottom plate 3, a contour layer 4 is provided at the upper inner end of the receiving groove 15, and the upper end of the contour layer 4 can contact with the standard test pressure device 11 and the electric push rod 6. After use, the limiting plug rod 14 can be pulled out from the inside of the mounting pin hole 13, and then the rotating support plate 5 can be folded and rotated, and the contour layer 4 provided can wrap the standard test pressure device 11 and the electric push rod 6 with a flexible material, a sponge layer 9 is provided at the upper inner end of the box cover 8, and the sponge layer 9 can contact with the rotating support plate 5, and after the box cover 8 is closed, the sponge layer 9 can produce a certain deformation after contacting with the rotating support plate 5 to prevent the rotating support plate 5 from moving, and a lifting handle 10 is fixed at the front center of the placement bin 1, and the lifting handle 10 provided can facilitate manual handling of the entire equipment.

[0031] Working principle: First, the storage bin 1 can be placed on a flat ground, and then the upper cover 8 of the box body can be rotated to open. During the test, the rotating support plate 5 can be rotated to a vertical angle with the fixed bottom plate 3, and then the limiting plug rod 14 can be inserted into the inside of the mounting pin hole 13, so that the rotating support plate 5 can be completely limited for subsequent testing;

[0032] The electric push rod 6 can drive the standard test pressure device 11 to move up and down, and the rubber cushion layer 12 can be located between the standard test pressure device 11 and the pressure sensor to be tested, which can play a buffering role. Under the action of the electric push rod 6, the standard test pressure device 11 and the pressure sensor to be tested can display and modify the displayed values ​​through the display screen 2;

[0033] After use, the limiting rod 14 can be pulled out from the mounting pin hole 13, and then the rotating support plate 5 can be folded and rotated. The contoured layer 4 can wrap the standard test pressure device 11 and the electric push rod 6 with a flexible material. After the upper cover 8 of the box is closed, the sponge layer 9 can produce a certain deformation after contacting with the rotating support plate 5 to prevent the rotating support plate 5 from moving. A lifting handle 10 is fixed at the front center position of the placement bin 1, and the lifting handle 10 can facilitate manual transportation of the entire equipment.

[0034] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A pressure sensor calibration device, comprising a storage chamber (1) and a box cover (8) rotatably connected to one side of the upper end surface of the storage chamber (1), characterized in that: Also includes: A display screen (2) is fixed to the left side of the inner upper end surface of the placement chamber (1), and the display screen (2) can be electrically connected to the pressure sensor to be tested; A fixed bottom plate (3) is fixed to the right side of the internal upper end surface of the storage bin (1), and the cross section of the fixed bottom plate (3) is an "H"-shaped structure; A folding assembly is arranged on the rear side of the fixed bottom plate (3) to facilitate storage after the test is completed; The test assembly is arranged at the upper end of the front side of the folding assembly and is used to test the pressure sensor to be tested.

2. A pressure sensor calibration device according to claim 1, characterized in that: The folding assembly comprises a rotating support plate (5), a mounting pin hole (13) and a limiting insertion rod (14); the rotating support plate (5) is rotatably connected to the rear side of the fixed base plate (3) via a rotating shaft; the mounting pin holes (13) are symmetrically distributed and opened on the left and right sides of the fixed base plate (3); the limiting insertion rod (14) is symmetrically arranged on the left and right sides of the rotating support plate (5); the cross section of the limiting insertion rod (14) is a "U"-shaped structure; the other end of the limiting insertion rod (14) can be inserted into the inside of the mounting pin hole (13).

3. A pressure sensor calibration device according to claim 2, characterized in that: The upper end surface of the fixed bottom plate (3) is provided with a placement circular groove (7), and a pressure sensor to be measured is arranged inside the placement circular groove (7).

4. A pressure sensor calibration device according to claim 3, characterized in that: The test assembly comprises an electric push rod (6), a standard test pressure device (11) and a rubber cushion layer (12); the electric push rod (6) is fixed to the front upper end of the rotating support plate (5); the standard test pressure device (11) is fixed to the output end of the electric push rod (6); the rubber cushion layer (12) is arranged at the central position of the standard test pressure device (11), and the bottom of the rubber cushion layer (12) can contact the pressure sensor to be tested.

5. A pressure sensor calibration device according to claim 4, characterized in that: The upper inner end of the storage bin (1) is provided with a receiving groove (15), and the receiving groove (15) is located at the front side of the fixed bottom plate (3). The upper inner end of the receiving groove (15) is provided with a contouring layer (4), and the upper end of the contouring layer (4) can contact the standard test pressure device (11) and the electric push rod (6).

6. A pressure sensor calibration device according to claim 2, characterized in that: A sponge layer (9) is provided at the inner upper end of the box upper cover (8), and the sponge layer (9) can be in contact with the rotating support plate (5).

7. A pressure sensor calibration device according to claim 1, characterized in that: A lifting handle (10) is fixed at the front center of the storage bin (1).

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