Multi-station base for pressure module calibration

Abstract

The utility model relates to the technical field of sensor pressure calibration devices, in particular to a multi-station base for pressure module calibration, which comprises a base body internally provided with a medium channel, and a gland groove for placing a gland is arranged on the upper surface of the base body. A plurality of pressure module bearing units are arranged along the bottom wall of the gland groove; each pressure module bearing unit comprises a plurality of pressure module double supports, each pressure module double support is provided with a pressure module caulking groove for placing two pressure modules, and the bottom wall of each pressure module caulking groove is provided with a medium branch channel communicated with the medium channel. The device not only is simple in structure and good in air tightness, but also can effectively expand the capacity of the pressure module caulking groove for bearing the pressure module, thereby realizing the verification of a large batch of pressure sensors at a time. And the verification efficiency of the pressure module can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor pressure calibration devices, in particular to a multi-station base for pressure module calibration. Background Art

[0002] Pressure sensors are usually composed of a pressure module and a signal processing unit. They are devices or apparatuses that can sense pressure signals and convert them into usable output electrical signals according to certain rules. 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] In automobile braking systems, pressure sensors are usually used to collect the pressure values ​​of brake fluid. In order to ensure that the pressure sensors put on the market are qualified products, manufacturers need to perform pressure tests on pressure sensors before leaving the factory in order to analyze the performance of the corresponding pressure sensors and screen out qualified products.

[0004] The pressure module used in the pressure sensor for the automobile braking system is the core component. The media involved in the test process must comply with the requirements of FMVSS 116, that is, Dot 3 brake fluid, Dot 4 brake fluid and Dot 5.1 brake fluid, and the medium temperature range when the sensor is working is -40℃~140℃, and the working pressure range (gauge pressure) is 0~1.143Mpa G. Therefore, the pressure module in the calibration needs to undergo high and low temperature shocks of -40℃~140℃, as well as pressure shocks of 0~1100bar and random vibration tests.

[0005] The calibration devices currently in use all use a data acquisition board with a probe to calibrate the pressure sensor during the pressure process. In order to achieve rapid calibration, the traditional calibration method generally uses gas instead of hydraulic pressure, and simulates the automobile braking system environment by externally controlling the temperature and pressure of the gas to calibrate the pressure module. As the core of the existing calibration device, the base is not only used to place the pressure module, but also needs to provide medium pressure to the pressure module; however, the bases of the existing calibration devices have complex structures, poor air tightness, and cannot be expanded, which results in a small number of pressure modules that can be calibrated at a single time.

[0006] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0007] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and provide a multi-station base for pressure module calibration, so as to solve the technical problems of the prior art that the base structure of the calibration device is complex, the air tightness is poor, and the number of pressure modules calibrated at a single time is small.

[0008] The above objectives are achieved through the following technical solutions:

[0009] A multi-station base for pressure module calibration, comprising a base body with a medium channel arranged inside, a gland groove for a gland to be placed in the upper surface of the base body, and a plurality of pressure module bearing units are arranged along the bottom wall of the gland groove;

[0010] Each of the pressure module bearing units includes a plurality of pressure module double supports, each of which is provided with a pressure module embedding groove capable of accommodating two pressure modules, and a bottom wall of each of the pressure module embedding grooves is provided with a medium branch channel capable of communicating with the medium channel.

[0011] Furthermore, the pressure module bearing unit includes four pressure module double supports, and adjacent pressure module double supports are arranged at equal intervals.

[0012] Further, the pressure module embedding grooves located on the left side of each of the pressure module double supports constitute the left column of pressure module embedding grooves, and the pressure module embedding grooves located on the right side of each of the pressure module double supports constitute the right column of pressure module embedding grooves;

[0013] Correspondingly, the medium channel includes a left medium channel corresponding to the left column pressure module embedding groove, and a right medium channel corresponding to the right column pressure module embedding groove.

[0014] Furthermore, the medium channel also includes a connecting channel capable of connecting the left medium channel and the right medium channel.

[0015] Furthermore, a sealing ring groove for embedding a sealing ring is provided on the bottom wall of the pressure module embedding groove, and the medium branch channel is provided on the bottom wall of the sealing ring groove.

[0016] Furthermore, there are two gland grooves, including a first gland groove and a second gland groove that are interconnected;

[0017] Correspondingly, there are two glands, including a first gland corresponding to the first gland groove, and a second gland corresponding to the second gland groove.

[0018] Furthermore, there are four pressure module bearing units, including a first pressure module bearing unit and a second pressure module bearing unit located in the first gland groove, and a third pressure module bearing unit and a fourth pressure module bearing unit located in the second gland groove;

[0019] The first pressure module carrying unit and the third pressure module carrying unit are located in the same column, and the second pressure module carrying unit and the fourth pressure module carrying unit are located in the same column.

[0020] Furthermore, the base body is made of stainless steel.

[0021] Furthermore, the inlet and outlet of the medium channel are arranged on the side of the base body. Beneficial Effects

[0022] The utility model provides a multi-station base for pressure module calibration. By arranging a plurality of pressure module bearing units with double pressure module supports on the base body, a large number of pressure modules can be loaded; it can meet the input of any liquid or gas pressure medium. The device is not only simple in structure and good in air tightness, but also can effectively expand the pressure module embedding groove that carries the pressure module, thereby realizing the calibration of a large number of pressure sensors at a time. It can effectively improve the calibration efficiency of the pressure module. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a multi-station base for pressure module calibration according to the utility model;

[0024] Figure 2 A top view of a multi-station base for calibrating a pressure module according to the utility model;

[0025] Figure 3 This is a cross-sectional view of a multi-station base for pressure module calibration according to the utility model;

[0026] Figure 4 This is a schematic diagram of a multi-station base for pressure module calibration according to the utility model after installation with some pressure modules;

[0027] Figure 5 This is a schematic diagram of assembling a multi-station base for pressure module calibration described in the utility model with a pressure module and a pressure cover.

[0028] Graphic marking:

[0029] 1- Base body;

[0030] 2- medium channel, 201- left medium channel, 202- right medium channel, 203- communication channel;

[0031] 3- gland, 301- first gland, 302- second gland;

[0032] 4- gland groove, 401- first gland groove, 402- second gland groove;

[0033] 5-pressure module bearing unit, 501-pressure module double support, 502-pressure module embedded groove, 503-medium branch channel, 504-left column pressure module embedded groove, 505-right column pressure module embedded groove, 506-, 507-first pressure module bearing unit, 508-second pressure module bearing unit, 509-third pressure module bearing unit, 510-fourth pressure module bearing unit;

[0034] 6- Pressure module;

[0035] 7-Through hole of pressure module;

[0036] 8-Sealing ring. DETAILED DESCRIPTION

[0037] The utility model is further described in detail below in conjunction with the drawings and embodiments.

[0038] like Figures 1 to 3 As shown, a multi-station base for pressure module calibration includes a base body 1 with a medium channel 2 disposed therein, characterized in that a gland groove 4 for a gland 3 to be placed is provided on the upper surface of the base body 1, and a plurality of pressure module bearing units 5 are provided along the bottom wall of the gland groove 4 for placing a pressure module 6;

[0039] Each of the pressure module bearing units 5 includes a plurality of pressure module double supports 501 , each of which is provided with a pressure module embedding groove 502 for placing two pressure modules 6 , and a bottom wall of each of the pressure module embedding grooves 502 is provided with a medium branch channel 503 that can communicate with the medium channel 2 .

[0040] Specifically, the pressure modules 6 are provided with pressure module through holes 7 for the entry of pressure medium so as to monitor the pressure. In this embodiment, the pressure module through holes 7 and the corresponding medium branch channels 503 are coaxial.

[0041] It should be noted that the base body 1 is made of stainless steel, which has good pressure resistance and corrosion resistance. No matter whether the pressure medium is liquid or gas, it will not cause damage to it, thereby ensuring the service life.

[0042] The inlet and outlet of the medium channel 2 are arranged on the side of the base body 1, and this structure can facilitate the subsequent connection with the medium supply pipe.

[0043] As a specific embodiment of this solution, the pressure module bearing unit 5 includes four pressure module double supports 501, and adjacent pressure module double supports 501 are arranged at equal intervals;

[0044] Specifically, the pressure module carrying unit 5 is in a rectangular shape, and the four pressure module double supports 501 are arranged therein, and the centers of the pressure module double supports 501 are coaxial.

[0045] The pressure module embedding grooves 502 located on the left side of each of the pressure module double supports 501 constitute a left column of pressure module embedding grooves 504, and the pressure module embedding grooves 502 located on the right side of each of the pressure module double supports 501 constitute a right column of pressure module embedding grooves 505;

[0046] Correspondingly, the medium channel 2 includes a left medium channel 201 corresponding to the left column pressure module embedding groove 504, and a right medium channel 202 corresponding to the right column pressure module embedding groove 505;

[0047] In this structure, the left medium channel 201 and the right medium channel 202 which are independent of each other are used to realize the independent pressure medium supply to the left column pressure module embedding groove 504 and the right column pressure module embedding groove 505 .

[0048] In this embodiment, the medium channel 2 further includes a connecting channel 203 that can connect the left medium channel 201 and the right medium channel 202. The left medium channel 201 and the right medium channel 202 are connected through the connecting channel 203, thereby ensuring that the pressure in each place in the medium channel 2 is balanced, and then the same pressure can be provided to each pressure module 6, thereby improving the accuracy of subsequent calibration.

[0049] It should be noted that, in this embodiment, it is necessary to ensure that one of the left medium channel 201 or the right medium channel 202 is used to communicate with the pressure medium, and the other one and the communication channel 203 are blocked.

[0050] like Figure 4 and Figure 5 As shown, in this embodiment, a sealing ring groove 506 for embedding the sealing ring 8 is provided on the bottom wall of the pressure module embedding groove 502, and the medium branch channel 503 is provided on the bottom wall of the sealing ring groove 506. With this structure, the air tightness between the pressure module through hole 7 and the medium branch channel 503 can be increased, thereby promoting the medium pressure to enter the pressure module through hole 7 better.

[0051] As a specific embodiment of the present solution, there are two gland grooves 4, including a first gland groove 401 and a second gland groove 402 which are interconnected;

[0052] Correspondingly, there are two glands 3, including a first gland 301 corresponding to the first gland groove 401, and a second gland 302 corresponding to the second gland groove 402;

[0053] The pressure cover in this embodiment is mainly used to press the top of the pressure module 6 so that it will not fall out of the pressure module embedding groove 502 when receiving the pressure from the bottom side;

[0054] As for how to press the pressure cover 3, it is not specifically described in this embodiment, and conventional pressing and tightening methods can be adopted.

[0055] like Figure 2 As shown, correspondingly, there are four pressure module bearing units 5, including a first pressure module bearing unit 507 and a second pressure module bearing unit 508 located in the first gland groove 401, and a third pressure module bearing unit 509 and a fourth pressure module bearing unit 510 located in the second gland groove 402;

[0056] The first pressure module carrying unit 507 and the third pressure module carrying unit 509 are located in the same column, and the second pressure module carrying unit 508 and the fourth pressure module carrying unit 510 are located in the same column;

[0057] That is, the row formed by the first pressure module carrying unit 507 and the third pressure module carrying unit 509 is parallel to the row formed by the second pressure module carrying unit 508 and the fourth pressure module carrying unit 510;

[0058] Each column of pressure module carrying units 5 includes a corresponding left media channel 201 and a right media channel 202. In the present embodiment, since there are four media channels and one connecting channel, namely, two left media channels 201, two right media channels 202 and one connecting channel 203, it is only necessary to ensure that any one of the four media channels serves as the media pressure inlet, and the remaining channels are blocked.

[0059] This structure can further realize the placement of the pressure modules 6 , and thus realize the calibration of a large number of pressure modules 6 .

[0060] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be thought of by anyone familiar with the technology within the technical scope disclosed by the utility model are included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the scope of the claims.

Claims

1. A multi-station base for calibrating a pressure module, comprising a base body (1) having a medium channel (2) arranged therein, characterized in that The upper surface of the base body (1) is provided with a gland groove (4) into which the gland (3) can be placed, and a plurality of pressure module bearing units (5) are provided along the bottom wall of the gland groove (4); Each of the pressure module bearing units (5) comprises a plurality of pressure module double supports (501), each of the pressure module double supports (501) being provided with a pressure module embedding groove (502) capable of accommodating two pressure modules (6), and a bottom wall of each of the pressure module embedding grooves (502) being provided with a medium branch channel (503) capable of communicating with the medium channel (2).

2. A multi-station base for pressure module calibration according to claim 1, characterized in that The pressure module bearing unit (5) comprises four pressure module double supports (501), and adjacent pressure module double supports (501) are arranged at equal intervals.

3. The multi-station base for pressure module calibration according to claim 2, characterized in that: The pressure module embedding grooves (502) located on the left side of each of the pressure module double supports (501) constitute a left column of pressure module embedding grooves (504), and the pressure module embedding grooves (502) located on the right side of each of the pressure module double supports (501) constitute a right column of pressure module embedding grooves (505); Correspondingly, the medium channel (2) comprises a left medium channel (201) corresponding to the left column pressure module embedding groove (504), and a right medium channel (202) corresponding to the right column pressure module embedding groove (505).

4. The multi-station base for pressure module calibration according to claim 3, characterized in that: The medium channel (2) further comprises a connecting channel (203) capable of connecting the left medium channel (201) and the right medium channel (202).

5. A multi-station base for pressure module calibration according to claim 1 or 2, characterized in that The bottom wall of the pressure module embedding groove (502) is provided with a sealing ring groove (506) for embedding the sealing ring (8), and the bottom wall of the sealing ring groove (506) is provided with the medium branch channel (503).

6. The multi-station base for pressure module calibration according to claim 1, characterized in that There are two gland grooves (4), including a first gland groove (401) and a second gland groove (402) that are connected to each other; Correspondingly, there are two glands (3), including a first gland (301) corresponding to the first gland groove (401), and a second gland (302) corresponding to the second gland groove (402).

7. A multi-station base for pressure module calibration according to claim 6, characterized in that There are four pressure module bearing units (5), including a first pressure module bearing unit (507) and a second pressure module bearing unit (508) located in the first gland groove (401), and a third pressure module bearing unit (509) and a fourth pressure module bearing unit (510) located in the second gland groove (402); The first pressure module carrying unit (507) and the third pressure module carrying unit (509) are located in the same column, and the second pressure module carrying unit (508) and the fourth pressure module carrying unit (510) are located in the same column.

8. The multi-station base for pressure module calibration according to claim 1, characterized in that , the base body (1) is made of stainless steel.

9. The multi-station base for pressure module calibration according to claim 1, characterized in that The inlet and outlet of the medium channel (2) are arranged on the side of the base body (1).

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