CN220490287U

CN220490287U - Pressure sensor test fixture

Info

Publication number: CN220490287U
Application number: CN202322005373.5U
Authority: CN
Inventors: 温学林; 陈璐; 李闯; 林俞帆; 杜磊
Original assignee: Suzhou Changfeng Aviation Electronics Co Ltd
Current assignee: Suzhou Changfeng Aviation Electronics Co Ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-02-13
Anticipated expiration: 2033-07-28

Abstract

The utility model discloses a pressure sensor testing tool, which comprises a tool main body, wherein the tool main body is also provided with an exhaust hole, the exhaust hole is communicated with a testing channel, and the exhaust hole is matched with a first plug. In the structure, the vent hole is additionally arranged, when medium oil enters the test pipeline through the oil inlet, in the process of filling the test pipeline, air existing in the medium oil and/or air in the pipeline (oil pipeline, test channel and other spaces) can be preferentially discharged from the vent hole, so that the existence of medium oil bubbles in the test pipeline is greatly reduced, particularly the aggregation of gas at the pressure sensing end of the pressure sensor is reduced, the formation of bubbles is greatly reduced, the test pressure of the pressure sensor is stable, and the pressure sensor is calibrated or tested stably, particularly the calibration or test of the high-precision sensor is more accurate.

Description

Pressure sensor test fixture

Technical Field

The utility model relates to the technical field of sensor testing, in particular to a pressure sensor testing tool.

Background

The pressure sensor is the most commonly used sensor in industrial practice, and is widely applied to various industrial self-control environments and is used for designing various industries such as water conservancy and hydropower, aerospace, petrochemical industry, electric power and the like. The high-range pressure sensor is generally used in the fields of industry and transportation, and can be used for measuring and monitoring the pressure of fluid such as cooling liquid, lubricating oil and the like. In the manufacturing process of the sensor, a high-voltage testing environment needs to be built so as to calibrate and compensate the sensor, so that higher precision is realized. The industry typically creates a wide range of pressure environments by compressing silicone oil or hydraulic oil through a high pressure controller.

At present, the main principle of the traditional high-range pressure sensor testing tool is that a sensor is connected with an oil way, and sealing is realized through fastening of an interface, so that the pressure inside the oil way is ensured to be consistent with the pressure inside a controller, and a small amount of air in the oil way is not treated. Air in the high-pressure oil path cannot be discharged, and finally is extruded to be accumulated near the pressure sensing end of the pressure sensor, so that a plurality of bubbles are formed. The high pressure controller realizes different pressures by compressing and releasing the oil medium during the pressurizing process. Because the volume of the bubbles is small, the compression and release of the medium oil can generate acting force on the bubbles to enable the bubbles to continuously creep, so that the pressure sensor can not stabilize the pressure all the time, and the high-precision sensor can not be calibrated or tested.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a pressure sensor testing tool, which comprises a tool main body, wherein an oil inlet and at least one testing interface are arranged on the tool main body; a test channel is formed in the tool main body, and the oil inlet is communicated with the test interface through the test channel; the tool main body is further provided with an exhaust hole, the exhaust hole is communicated with the test channel, and the exhaust hole is matched with the first plug. In the structure, the vent hole is additionally arranged, when medium oil enters the test pipeline through the oil inlet, in the process of filling the test pipeline, air existing in the medium oil and/or air in the pipeline (oil pipeline, test channel and other spaces) can be preferentially discharged from the vent hole, so that the existence of medium oil bubbles in the test pipeline is greatly reduced, particularly the aggregation of gas at the pressure sensing end of the pressure sensor is reduced, the formation of bubbles is greatly reduced, the test pressure of the pressure sensor is stable, and the pressure sensor is calibrated or tested stably, particularly the calibration or test of the high-precision sensor is more accurate.

In one embodiment, the top end of the tool body is provided with an exhaust hole. In this application, through will the exhaust hole sets up the top of frock main part, during the use, will the frock main part is placed on the operation panel, does not need extra structure and operation, just can discharge the air that exists in the medium oil and/or the air in the pipeline (other spaces such as oil pipeline and test channel), easy operation, convenient to use. As for the number of the exhaust holes, the number is not particularly limited, and may be particularly limited according to the structure of the tool main body, and of course, the arrangement and setting of the plurality of exhaust holes may also be particularly limited according to the structure of the tool main body, and preferably, the arrangement is performed at the top end of the tool main body where the tool main body is placed.

In one embodiment, a viewing slot is formed at the exhaust port of the exhaust vent. The arrangement of the observation groove can facilitate the observation of the discharge of bubbles and the leakage of medium oil during the exhaust, thereby reducing the problem that the leakage of medium oil during the exhaust flows everywhere.

Preferably, the device further comprises a first sealing ring, and the first plug is matched with the exhaust hole through the first sealing ring.

In one embodiment, the device further comprises a product adapter, the product adapter mating with the test interface; and is used for connecting the pressure sensor.

In one embodiment, the test interface is formed on a side of the tool body. Through setting up at the side test interface, at this moment, the intercommunication test channel of test interface and pressure sensor's pressure sensing end can not be higher than the top surface, like this, combines the top surface to set up the exhaust hole for air in the medium oil is discharged more easily.

In one embodiment, the oil inlet is connected to a high pressure controller by a conduit.

In one embodiment, a high pressure valve is disposed on the conduit between the oil inlet and the high pressure controller.

In one embodiment, a first threaded joint is formed at the oil inlet; and meanwhile, one end of the pipeline connected with the oil inlet forms a second threaded joint.

In one embodiment, when the test interface is multiple and partially connected to a pressure sensor, a second plug is further included that mates with the test interface that is not connected to a pressure sensor.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural diagram of a pressure sensor test fixture of the present utility model;

FIG. 2 is a schematic structural view of the tooling body of the present utility model;

FIG. 3 is a schematic perspective view of the tooling body of the present utility model;

the reference numerals in the drawings are as follows: 1-a tool main body; 2-oil inlet; 3-a test interface; 4-a test channel; 5-exhaust holes; 6-a first plug; 7-observing grooves; 8-a first sealing ring; 9-product adapter; 10-a high voltage controller; 11-high pressure valve; 12-a first threaded joint; 13-a second threaded joint; 14-a second plug.

Detailed Description

The following is a clear and complete description of the present utility model, taken in conjunction with the accompanying drawings, and it is evident that the described embodiments are some, but not all, embodiments of the present utility model. Other embodiments of the utility model, which are encompassed by the present utility model, are within the scope of the utility model as would be within the skill of those of ordinary skill in the art without undue burden.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in fig. 1-3, this embodiment discloses a pressure sensor testing tool, including a tool main body 1, an oil inlet 2 and at least one testing interface 3 are provided on the tool main body 1, where the structure of the tool main body 1 is not specifically limited, and may be a regular structure or an irregular structure, in this case, a cuboid structure, the oil inlet 2 is preferably provided on one side of the tool main body 1, the formation of the oil inlet 2 is not specifically limited, may be formed by processing one end of the tool main body 1, or may be an independent body mounted on the tool main body 1, the position where the testing interface 3 is provided is not specifically limited, preferably provided on the side of the tool main body 1, and the testing interface 3 is preferably plural, and may be all connected to a pressure sensor, and may be partially connected to a pressure sensor, and when partially connected to a pressure sensor, the remaining testing interface 3 is connected to a second plug 14 to seal; a test channel 4 is formed in the tool main body 1, the shape and trend of the test channel 4 are not particularly limited, a circular channel is preferred, the trend is set according to the position of the test interface 3, in the embodiment, the test channel is close to a fishbone shape, and is particularly centipede trapezoid, and the oil inlet 2 is communicated with the test interface 3 through the test channel 4; the tool main body 1 is further provided with an exhaust hole 5, the exhaust hole 5 is communicated with the test channel 4, the exhaust hole 5 is matched with the first plug 6, in the embodiment, an internal thread is formed in the exhaust hole 5, and when the tool is used, the first plug 6 is screwed and fixed. The structure of the exhaust hole 5 is not particularly limited, such as a cylindrical hole, and preferably, the top end of the tool body 1 is provided with the exhaust hole 5. Further, the exhaust port of the exhaust hole 5 is formed with an observation groove 7, the structure of the observation groove 7 is not particularly limited, and the observation groove is disposed at the periphery of the exhaust port of the exhaust hole 5, preferably, the observation groove further comprises a first sealing ring 8, the first plug 6 is matched with the exhaust hole 5 through the first sealing ring 8, and the observation groove 7 is also used for placing the first sealing ring 8 when in use.

Further, the device also comprises a product adapter 9, wherein the product adapter 9 is matched with the test interface 3; meanwhile, the test interface 3 is used for connecting a pressure sensor, namely, the pressure sensor is connected through the product adapter 9, and a sealing ring is used for corresponding sealing when the product adapter 9 and the pressure sensor are installed.

Further, the oil inlet 2 is connected to the high-pressure controller 10 through a pipe, and as for the connection mode, there is no specific limitation, and preferably, a first screwed joint 12 is formed at the oil inlet 2; meanwhile, a second threaded joint 13 is formed at one end of the pipeline connected with the oil inlet 2, the first threaded joint 12 and the second threaded joint 13 are matched and arranged, the first threaded joint 12 and the second threaded joint are internal threads or external threads, a movable joint structure is formed, and the movable joint structure is convenient to install and detach. The high-pressure controller 10 selects a structure that can form the medium oil into high-pressure oil, and a medium oil container may or may not be arranged in the structure, and according to a specific model, the model of the high-pressure controller 10 is as follows: a high-pressure liquid pressure controller of the PPCHA70M is disclosed.

Further, a high-pressure valve 11 is arranged on a pipeline between the oil inlet 2 and the high-pressure controller 10.

Further, the tool body 1 is plural, and may be connected by using a connector, so as to realize testing of more sensors, and as for the connector, such as a pipeline, a loose joint, etc.

The application process of the utility model is as follows:

1. closing the high pressure valve 11, connecting the first threaded joint 12 and the second threaded joint 13;

2. the product adapter 9, the pressure sensor and the second plug 14 are installed (when the remaining test interface 3 needs to be plugged);

3. placing the first sealing ring 8 into the observation groove 7, manually screwing the first plug 6 into the exhaust hole 5, and fastening by screwing a tool is not applicable;

4. opening the high-pressure valve 11, adjusting the pressure of the high-pressure controller 10 to be 0.1-1.5MPa, preferably 1MPa, waiting for the sound of no air bubbles discharged at the exhaust hole 5, and after the oil is continuously leaked for 1-15 seconds, preferably 10 seconds, closing the high-pressure valve 11, and tightening the first plug 6 by using a wrench;

5. opening the high-pressure valve 11, adjusting the pressure of the high-pressure controller 10 to be the design pressure, and then starting to test the pressure sensor;

6. after the test is finished, the pressure emphasis of the high-pressure controller 10 is set to 0, the high-pressure valve 11 is closed, and the first plug 6, the product adapter 9, the pressure sensor and the second plug 14 (when the rest of the test interface 3 is required to be plugged) are removed.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. The pressure sensor testing tool is characterized by comprising a tool main body, wherein an oil inlet and at least one testing interface are arranged on the tool main body; a test channel is formed in the tool main body, and the oil inlet is communicated with the test interface through the test channel; the tool main body is further provided with an exhaust hole, the exhaust hole is communicated with the test channel, and the exhaust hole is matched with the first plug.

2. The pressure sensor testing tool of claim 1, wherein the top end of the tool body is provided with an exhaust hole.

3. The pressure sensor testing tool of claim 1 or 2, wherein an observation groove is formed at an exhaust port of the exhaust hole.

4. The pressure sensor testing tool of claim 3, further comprising a first seal ring, wherein the first plug is mated with the vent hole through the first seal ring.

5. The pressure sensor testing tool of claim 4, further comprising a product adapter, the product adapter mating with the test interface; and is used for connecting the pressure sensor.

6. The pressure sensor testing tool of claim 5, wherein the test interface is formed on a side of the tool body.

7. The pressure sensor testing tool of claim 6, wherein the oil inlet is connected to a high pressure controller through a pipe.

8. The pressure sensor testing tool of claim 7, wherein a high pressure valve is disposed on a pipeline between the oil inlet and the high pressure controller.

9. The pressure sensor testing tool of claim 8, wherein a first threaded joint is formed at the oil inlet; and meanwhile, one end of the pipeline connected with the oil inlet forms a second threaded joint.

10. The pressure sensor testing tool of claim 9, further comprising a second plug that mates with the test interface to which no pressure sensor is connected when the test interface is multiple and partially connected to a pressure sensor.