Pressure sensor metering calibration connecting device

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By designing a pressure sensor measurement and calibration connection device and using a rotating lower connection piece and a telescopic piece to protect the sensor, the problem of sensor damage during measurement and calibration is solved, and accurate pressure or tension value adjustment and calibration accuracy are achieved.

CN223389340UActive Publication Date: 2025-09-26CHINT NEW ENERGY TECH CO LTD

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Patent Information

Application Number: CN202422534292.9
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-10-21
Publication Date: 2025-09-26
Estimated Expiration: 2034-10-21

AI Technical Summary

Technical Problem

In the prior art, during the measurement and calibration process of an S-type pressure sensor, a small displacement change may cause a huge force change due to the rigid connection, which may easily cause damage to the calibrated pressure sensor.

Method used

A pressure sensor measurement and calibration connection device is designed, which includes an upper end cover, an upper connecting piece, a telescopic piece and a lower connecting piece. The distance is changed by rotating the lower connecting piece, and the telescopic piece is used to protect the sensor from damage. The deformation is adjusted to change the pressure or tension value.

Benefits of technology

It effectively protects the calibrated pressure sensor from damage, while accurately adjusting the pressure or tension value to improve calibration accuracy and safety.

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Abstract

The utility model provides a pressure sensor metering calibration connecting device comprising an upper end cover, the inner side wall of which is provided with a first blocking part; the upper connecting piece is partially located in the upper end cover, and a second blocking part is arranged on the side wall of the upper connecting piece located in the upper end cover; the telescopic piece is arranged between the upper end cover and the upper connecting piece; the lower connecting piece is positioned below the upper connecting piece and is rotatably connected with the upper connecting piece; and the lower end cover is rotatably arranged at the bottom of the lower connecting piece. Deformation of the device can be changed by adjusting the distance between the upper connecting piece and the lower connecting piece, so that pressure values or tension values received by the metering calibration standard piece and the calibrated pressure sensor are changed. Meanwhile, the calibrated pressure sensor can be protected from being damaged during pressure or tension calibration through the telescopic piece.

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Description

Technical Field

[0001] The present application relates to the field of instrument measurement and testing, and in particular to a pressure sensor measurement and calibration connection device. Background Art

[0002] Tension / compression testing of materials and structures is a common practice in industries such as photovoltaics, machinery, and plastics. Among various types of equipment, S-type pressure sensors are commonly used in tension / compression testing equipment to monitor force data.

[0003] In order to ensure the test accuracy, it is necessary to regularly calibrate the S-type pressure sensor involved in tension / compression testing. The most common calibration method is to compare the force value of the third-party calibration standard (a higher-level traceable item, usually also an S-type pressure sensor) with the calibrated pressure sensor, such as Figure 1 As shown in the figure, during metrological calibration, two pressure sensors must be brought into contact before the pressure is adjusted. Pressure adjustment can only be achieved by moving the pressure sensor being calibrated. However, because the two sensors are rigidly connected, a small change in displacement can result in a significant change in force. Consequently, in actual operation, the pressure sensor being calibrated can easily exceed its range and be damaged. Utility Model Content

[0004] In order to solve one of the above technical problems, the utility model provides a pressure sensor measurement and calibration connection device.

[0005] The present invention provides a pressure sensor measurement and calibration connection device, comprising:

[0006] An upper end cover, the upper end cover is a cylindrical structure with an open bottom and a closed top, and a first blocking portion is provided on the inner side wall of the upper end cover;

[0007] An upper connecting member, partially located inside the upper end cover, a side wall of the upper connecting member located inside the upper end cover is provided with a second blocking portion, and the second blocking portion is located above the first blocking portion, and the first blocking portion and the second blocking portion restrict the upper connecting member from being separated from the upper end cover;

[0008] a telescopic member, disposed between the upper end cover and the upper connecting member;

[0009] a lower connecting member, located below the upper connecting member and rotatably connected to the upper connecting member, wherein when the lower connecting member and the upper connecting member rotate, the distance between the lower connecting member and the upper connecting member changes;

[0010] The lower end cover is rotatably arranged on the bottom of the lower connecting member.

[0011] Preferably, a threaded hole is provided at the bottom of the upper connecting member, and a stud is provided at the top of the lower connecting member, and the stud is threadedly connected to the threaded hole.

[0012] Preferably, the bottom of the upper end cover is bent inward to form the first blocking portion.

[0013] Preferably, the top edge of the upper connecting member protrudes outward to form the second blocking portion.

[0014] Preferably, an upper rotating handle is provided on the side wall of the upper connecting member located outside the upper end cover.

[0015] Preferably, a lower rotating handle is provided on the side wall of the lower connecting member.

[0016] Preferably, a rotation joint is provided between the lower connecting member and the lower end cover.

[0017] Preferably, an upper hook groove is provided on the top of the upper end cover, and the upper hook groove is used to connect a measurement calibration standard.

[0018] Preferably, a lower hook groove is provided at the bottom of the lower end cover, and the lower hook groove is used to connect the calibrated pressure sensor.

[0019] Preferably, the telescopic member is a spring.

[0020] The beneficial effects of the present invention are as follows: The proposed pressure sensor calibration connection device is connected between a calibration standard and the pressure sensor being calibrated. Adjusting the distance between the upper and lower connecting members changes the device's deformation, thereby altering the pressure or tension values received by the calibration standard and the pressure sensor being calibrated. Furthermore, the telescopic member protects the pressure sensor being calibrated from damage during pressure or tension calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 This is an installation diagram for the existing solution in which a third-party metrology agency uses a standard component to perform metrological calibration with the S-type pressure sensor being measured;

[0023] Figure 2 This is a structural diagram of the pressure sensor measurement and calibration connection device according to an embodiment of the present utility model;

[0024] Figure 3This is a schematic diagram of the connection between the pressure sensor measurement and calibration connection device according to an embodiment of the present utility model, the measurement and calibration standard, and the pressure sensor to be calibrated during pressure calibration;

[0025] Figure 4 This is a schematic diagram of the connection between the pressure sensor metrology calibration connection device described in an embodiment of the present utility model and the metrology calibration standard and the calibrated pressure sensor when performing tension calibration.

[0026] Description of reference numerals:

[0027] 1- metrological calibration standard, 2- calibrated pressure sensor, 3- upper end cover, 4- first blocking part, 5- upper connecting piece, 6- second blocking part, 7- threaded hole, 8- lower connecting piece, 9- stud, 10- lower end cover, 11- rotating joint, 12- upper rotating handle, 13- lower rotating handle, 14- upper hook slot, 15- lower hook slot, 16- telescopic part. DETAILED DESCRIPTION

[0028] In order to make the technical solutions and advantages of the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, and are not an exhaustive list of all the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless they conflict.

[0029] like Figure 2 As shown, this embodiment provides a pressure sensor measurement and calibration connection device, which includes:

[0030] The upper end cover 3 is a hollow cylindrical structure with an open bottom;

[0031] The upper connecting member 5 is partially located inside the upper end cover 3 and cannot be completely separated from the upper end cover 3;

[0032] The telescopic member 16 is provided between the upper end cover 3 and the upper connecting member 5 and is in a compressed state;

[0033] a lower connecting member 8 rotatably disposed below the upper connecting member 5 ;

[0034] The lower end cover 10 is rotatably disposed at the bottom of the lower connecting member 8 .

[0035] Specifically, in this embodiment, the upper end cover 3 is a cylindrical structure with an open bottom and a closed top, a hollow interior, and an n-shaped cross-section, which can be used to contact or connect the measurement and calibration standard 1. The upper half of the upper connector 5 can be located inside the upper end cover 3. The upper connector 5 can move up and down inside the upper end cover 3, but cannot be completely separated from the upper end cover 3. This is because a first blocking portion 4 is provided on the inner side wall of the upper end cover 3, and accordingly, a second blocking portion 6 is provided on the side wall of the upper connector 5 located inside the upper end cover 3, and the second blocking portion 6 is located above the first blocking portion 4. When the upper connector 5 moves up and down inside the upper end cover 3, the interaction between the first blocking portion 4 and the second blocking portion 6 can limit the upper connector 5 from being separated from the upper end cover 3. The first blocking portion 4 and the second blocking portion 6 can be annular, so that they can form a 360° barrier to the position between the upper connector 5 and the upper end cover 3.

[0036] Inside the upper end cover 3, a telescopic member 16 is provided between the upper end cover 3 and the upper connector 5. This telescopic member 16 can present a compressed state or a stretched state under the action of an external force, and specifically can be realized by a spring. One end of this telescopic member 16 is fixed to the inner top surface of the upper end cover 3, and the other end is fixed to the top of the upper connector 5. And when the first blocking portion 4 contacts with the second blocking portion 6, that is, when the distance between the top of the upper end cover 3 and the top of the upper connector 5 can no longer be increased, this telescopic member 16 is still in a compressed state. In this way, it is possible to ensure that when the upper end cover 3 and the upper connector 5 are in the limit position when the first blocking portion 4 contacts with the second blocking portion 6, they can only be compressed and cannot be extended between the upper end cover 3 and the upper connector 5.

[0037] A lower connecting member 8 is disposed below the upper connecting member 5. The lower connecting member 8 is rotatably connected to the upper connecting member 5, and as the lower connecting member 8 and the upper connecting member 5 rotate, the distance between the lower connecting member 8 and the upper connecting member 5 also changes. For example, when the lower connecting member 8 rotates clockwise, the distance between the lower connecting member 8 and the upper connecting member 5 decreases. Conversely, when the lower connecting member 8 rotates counterclockwise, the distance between the lower connecting member 8 and the upper connecting member 5 increases.

[0038] A lower end cap 10 is rotatably provided at the bottom of the lower connecting member 8 for contacting or connecting with the calibrated pressure sensor 2 .

[0039] The pressure sensor calibration connection device of this embodiment is connected between a calibration standard 1 and a pressure sensor 2 to be calibrated. Adjusting the distance between the upper connector 5 and the lower connector 8 changes the device's deformation, thereby altering the pressure or tension values received by the calibration standard 1 and the pressure sensor 2 to be calibrated. Furthermore, the telescopic member 16 protects the pressure sensor 2 to be calibrated from damage during pressure or tension calibration.

[0040] In some optional embodiments, the first blocking portion 4 can be formed by bending the bottom of the upper end cover 3 inward. Correspondingly, the second blocking portion 6 can be formed by protruding the top edge of the upper connecting member 5 outward, thereby making full use of the internal space of the upper end cover 3 and forming a maximum travel between the upper end cover 3 and the upper connecting member 5.

[0041] The diameter of the circle formed by the first blocking portion 4 is equal to or slightly larger than the diameter of the upper connecting member 5, so as not to affect the upper connecting member 5 from moving up and down inside the upper end cover 3. The diameter of the circle formed by the second blocking portion 6 is larger than the diameter of the circle formed by the first blocking portion 4, so that when the upper connecting member 5 moves downward inside the upper end cover 3, the upper surface of the first blocking portion 4 can come into contact with the lower surface of the second blocking portion 6 to form an obstruction.

[0042] In some optional embodiments, a threaded hole 7 is provided at the bottom of the upper connecting member 5 , and a stud 9 is provided at the top of the lower connecting member 8 , and the stud 9 is threadedly connected to the threaded hole 7 .

[0043] The threaded hole 7 opened at the bottom of the upper connecting member 5 has a certain depth. Correspondingly, the height of the stud 9 at the top of the lower connecting member 8 is the same as the depth of the threaded hole 7, so that on the basis of ensuring the matching connection between the upper connecting member 5 and the lower connecting member 8, a more obvious distance change can be provided for the upper connecting member 5 and the lower connecting member 8.

[0044] In some optional embodiments, an upper rotating handle 12 is provided on the side wall of the upper connecting member 5 located outside the upper end cover 3 , and a lower rotating handle 13 is provided on the side wall of the lower connecting member 8 .

[0045] The upper rotating handle 12 on the upper connecting member 5 and the lower rotating handle 13 on the lower connecting member 8 can both provide convenient operating space for the mutual rotation between the upper connecting member 5 and the lower connecting member 8, and it is also easier to grasp the rotation angle and the distance between the upper connecting member 5 and the lower connecting member 8.

[0046] In some optional embodiments, the top of the upper end cover 3 is provided with an upper hook groove 14 for connecting the calibration standard 1. The bottom of the lower end cover 10 is provided with a lower hook groove 15 for connecting the calibrated pressure sensor 2.

[0047] During pressure calibration, the calibration standard 1 and the pressure sensor 2 to be calibrated can directly contact the upper end cap 3 and the lower end cap 10. During tension calibration, however, the calibration standard 1 and the pressure sensor 2 to be calibrated need to be fixed or bound to the upper end cap 3 and the lower end cap 10. To this end, upper and lower hook slots 14 and 15 are provided on the upper and lower end caps 3 and 10, respectively. These can be fixed or bound to the upper and lower end caps 3 and 10 using tools such as string, facilitating calibration operations.

[0048] In some optional embodiments, a rotation joint 11 is provided between the lower connecting member 8 and the lower end cover 10 .

[0049] The rotary joint 11 can ensure that when the lower connecting member 8 rotates, the lower end cover 10 remains stationary and does not rotate along with the rotation of the lower connecting member 8 .

[0050] When the pressure sensor measurement and calibration connection device of this embodiment is used for pressure calibration, the pressure sensor measurement and calibration connection device is placed between the measurement and calibration standard 1 and the calibrated pressure sensor 2, so that the measurement and calibration standard 1 contacts the upper end cover 3 and the calibrated pressure sensor 2 contacts the lower end cover 10. Figure 3 By manually rotating the upper rotating handle 12 or the lower rotating handle 13, the distance between the upper connecting member 5 and the lower connecting member 8 is changed, thereby changing the overall deformation of the pressure sensor calibration connection device, thereby changing the pressure value received by the calibration standard 1 and the calibrated pressure sensor 2. During this process, the presence of the telescopic member 16 can protect the calibrated pressure sensor 2 from damage.

[0051] When performing tension calibration, first connect the calibration standard 1 to the upper end cover 3 and the calibrated pressure sensor 2 to the lower end cover 10 using tools such as ropes. Figure 4 As with pressure calibration, manually rotating the upper or lower handle 12, 13 changes the distance between the upper and lower connectors 5, 8. This, in turn, alters the overall deformation of the pressure sensor calibration connection, thereby changing the tension applied to the calibration standard 1 and the pressure sensor 2 being calibrated. During this process, the distance between the upper and lower connectors 5, 8, can be manually adjusted, protecting the pressure sensor 2 being calibrated from damage.

[0052] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A pressure sensor measurement and calibration connection device, characterized in that: include: An upper end cover, the upper end cover is a cylindrical structure with an open bottom and a closed top, and a first blocking portion is provided on the inner side wall of the upper end cover; An upper connecting member, partially located inside the upper end cover, a side wall of the upper connecting member located inside the upper end cover is provided with a second blocking portion, and the second blocking portion is located above the first blocking portion, and the first blocking portion and the second blocking portion restrict the upper connecting member from being separated from the upper end cover; a telescopic member, disposed between the upper end cover and the upper connecting member; a lower connecting member, located below the upper connecting member and rotatably connected to the upper connecting member, wherein when the lower connecting member and the upper connecting member rotate, the distance between the lower connecting member and the upper connecting member changes; The lower end cover is rotatably arranged on the bottom of the lower connecting member.

2. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: A threaded hole is provided at the bottom of the upper connecting piece, and a stud is provided at the top of the lower connecting piece, and the stud is threadedly connected to the threaded hole.

3. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: The bottom of the upper end cover is bent inward to form the first blocking portion.

4. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: The top edge of the upper connecting member protrudes outward to form the second blocking portion.

5. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: An upper rotating handle is provided on the side wall of the upper connecting piece located outside the upper end cover.

6. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: A lower rotating handle is provided on the side wall of the lower connecting piece.

7. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: A rotation joint is provided between the lower connecting member and the lower end cover.

8. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: An upper hook slot is provided on the top of the upper end cover, and the upper hook slot is used to connect a measurement calibration standard.

9. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: A lower hook groove is provided at the bottom of the lower end cover, and the lower hook groove is used to connect the calibrated pressure sensor.

10. The pressure sensor measurement and calibration connection device according to claim 1, characterized in that: The telescopic member is a spring.