Pressure sensor testing equipment

Abstract

The utility model discloses a pressure sensor test device which comprises a limiting assembly and an air pressure assembly. The limiting assembly comprises a base abutting against the peripheral side of the pressure sensor, a baffle abutting against one end of the pressure sensor and an adjusting piece connected with the baffle and the base in a matched mode. The adjusting piece is used for enabling the baffle to move in the extending direction of the base. The air pressure assembly comprises an air guide rod installed on the side, away from the baffle, of the base, and the air guide rod can be driven to get close to the base and is used for applying air pressure to the pressure sensor. According to the pressure sensor testing equipment, the baffle plate is adjusted to move to different positions along the extension direction of the base through the adjusting piece, so that the limiting assembly can limit and fix various pressure sensors with different lengths, and the adaptability of the testing equipment to different pressure sensors is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensor testing, and particularly relates to a pressure sensor testing device. Background Art

[0002] A pressure sensor is a device or apparatus that can sense a pressure signal and convert the pressure signal into an electrical signal according to a certain rule. Pressure sensors are widely used in various fields. For example, in the oil and gas recovery field, pressure sensors can monitor the air pressure changes in pipelines, helping relevant technicians to promptly detect and handle possible abnormal pipeline pressures, thereby ensuring the safety of equipment.

[0003] In view of the above situation, before applying a pressure sensor to a specific device, its performance and detection accuracy should be tested to ensure that the pressure sensor can accurately feedback the pressure value. In the prior art, for pressure sensors of different specifications, different testing devices often need to be designed, resulting in poor adaptability of the testing device to pressure sensors of different specifications.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a pressure sensor testing device. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a pressure sensor testing device, which can solve the problem of poor adaptability of the testing device to pressure sensors of different specifications as described above.

[0006] To achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A pressure sensor testing device includes a limiting component and a pneumatic component; the limiting component includes a base that abuts against the periphery of the pressure sensor, a baffle that abuts against one end of the pressure sensor, and an adjusting member that is cooperatively connected to the baffle and the base, and the adjusting member is used to move the baffle along the extending direction of the base; the pneumatic component includes a gas guiding rod installed on the side of the base away from the baffle, and the gas guiding rod can be driven to approach the base for applying air pressure to the pressure sensor.

[0008] In one or more embodiments of the utility model, the adjusting member includes an adjusting screw and a limiting rod, the adjusting screw is threadedly connected to the baffle, the adjusting screw is also rotatably connected to the base along its axial direction, and one end of the limiting rod is fixedly connected to the surface of the baffle close to the base, and the other end is slidably inserted into the base.

[0009] In one or more embodiments of the present utility model, the air pressure assembly further includes a sealing head detachably sleeved on the outer periphery of the air guide rod, and an accommodating space for wrapping the detection end of the pressure sensor is formed between the sealing head and the air guide rod on the side close to the base.

[0010] In one or more embodiments of the present utility model, the sealing head includes a cylinder sleeved on the outer periphery of the air guide rod, and a sealing ring extending from the circumferential side of one end of the cylinder. The accommodating space is formed within the sealing ring, and the inner diameter of the sealing ring is adapted to the detection end of the pressure sensor.

[0011] In one or more embodiments of the present utility model, a first air passage for outputting gas is provided in the air guide rod, and a second air passage communicating with the first air passage is provided in the cylinder body. The second air passage is used for communicating with a pneumatic device.

[0012] In one or more embodiments of the present utility model, the inner diameter of the first air passage is smaller than the inner diameter of the second air passage.

[0013] In one or more embodiments of the present utility model, the pressure sensor testing device further includes a driving assembly for driving the air guide rod to move. The driving assembly includes a stroke rod and a guide sleeve. The air guide rod is detachably connected to the stroke rod, and the stroke rod is slidably disposed within the guide sleeve to limit the air guide rod to approach or move away from the base.

[0014] In one or more embodiments of the present utility model, the inner wall of the guide sleeve is provided with ridges extending along its axial direction, and the stroke rod is slidably connected to the ridges.

[0015] In one or more embodiments of the present utility model, the driving assembly further includes a mounting seat, a first connecting rod, and a second connecting rod. One end of the first connecting rod is hinged to the mounting seat, and one end of the second connecting rod is hinged to the first connecting rod and the other end is hinged to the end of the stroke rod away from the air guide rod.

[0016] In one or more embodiments of the present utility model, a connecting rod is provided at one end of the air guide rod, and the connecting rod is threadedly connected to the stroke rod.

[0017] Compared with the prior art, when testing the detection accuracy of the pressure sensor with the pressure sensor testing device of the present utility model, first, the baffle is moved relative to the base to a suitable distance through the adjusting member, then the pressure sensor is placed on the base, and the baffle is abutted against one end of the pressure sensor. After the pressure sensor is installed, air pressure is applied to the pressure sensor through the air guide rod, and finally, it is judged whether the detection accuracy of the pressure sensor meets the requirements according to the applied air pressure value and the detection value of the pressure sensor. In the pressure sensor testing device of the present utility model, the baffle is adjusted by the adjusting member to move to different positions along the extending direction of the base, so that the limiting component can limit and fix pressure sensors of various different lengths, improving the adaptability of the testing device of the present application to different pressure sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of a pressure sensor testing device in an embodiment of the present utility model;

[0020] Figure 2 is a schematic structural diagram of a limiting component, an air pressure component, and a driving component in an embodiment of the present utility model;

[0021] Figure 3 is a cross-sectional schematic diagram of an air pressure component and a driving component in an embodiment of the present utility model;

[0022] Figure 4 is Figure 3 the enlarged schematic diagram at A in

[0023] Main reference numerals:

[0024] 1. Limiting component; 11. Base; 12. Baffle; 13. Adjusting member; 131. Adjusting screw; 132. Limiting rod; 2. Air pressure component; 21. Air guide rod; 211. First air passage; 22. Sealing head; 221. Cylinder body; 222. Sealing ring; 223. Second air passage; 3. Driving component; 31. Stroke rod; 32. Guide sleeve; 33. Mounting seat; 34. First connecting rod; 35. Second connecting rod; 4. Connecting rod; 5. Rib. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Referring to Figure 1 , the pressure sensor testing device in an embodiment of the present utility model includes a limiting component 1, a pneumatic component 2, a driving component 3, and a testing table. The limiting component 1 is used to fix the pressure sensor, the pneumatic component 2 is used to apply air pressure to the pressure sensor, and the driving component 3 drives the pneumatic component 2 to approach the pressure sensor. The limiting component 1, the pneumatic component 2, and the driving component 3 are all installed on the testing table.

[0027] Referring to Figure 2 , the limiting component 1 includes a base 11 that abuts against the circumferential side of the pressure sensor, a baffle 12 that abuts against one end of the pressure sensor, and an adjusting member 13 that is cooperatively connected to the baffle 12 and the base 11. The adjusting member 13 is used to move the baffle 12 along the extending direction of the base 11.

[0028] In this embodiment, the adjusting member 13 includes an adjusting screw 131 and a limiting rod 132. The adjusting screw 131 is threadedly connected to the baffle 12 (the thread is not shown in the figure), and the adjusting screw 131 is also rotatably connected to the base 11 along its axial direction. One end of the limiting rod 132 is fixedly connected to the surface of the baffle 12 close to the base 11, and the other end is slidably inserted into the base 11. Specifically, an installation hole for the limiting rod 132 to pass through and slide is provided at the corresponding position of the base 11.

[0029] In this embodiment, by rotating the adjusting screw 131 clockwise or counterclockwise, the baffle 12 can be driven to approach or move away from the base 11 by using the thread of the screw. During the movement of the baffle 12, the limiting rod 132 can, on the one hand, limit the moving direction of the baffle 12, and on the other hand, limit the self-rotation of the baffle 12. Therefore, when installing the pressure sensor to the limiting component 1, the baffle 12 can be effectively driven to move through the cooperation of the adjusting screw 131 and the limiting rod 132, so that the distance between the baffle 12 and the base 11 can be adjusted, and thus pressure sensors of different lengths can be adapted.

[0030] Referring to Figure 2 and Figure 3 , the pneumatic component 2 includes a gas guide rod 21 installed on the side of the base 11 away from the baffle 12. The gas guide rod 21 can be driven to approach the base 11 and is used to apply air pressure to the pressure sensor.

[0031] Further, the air pressure assembly 2 further includes a sealing head 22 detachably sleeved on the outer periphery of the air guide rod 21. A receiving space for wrapping the detection end of the pressure sensor is formed between the sealing head 22 and the air guide rod 21 on the side close to the base 11. Exemplarily, the sealing head 22 can be threadedly connected to the air guide rod 21 or detachably connected to the air guide rod 21 through a pin.

[0032] Therefore, when applying air pressure to the pressure sensor, first place the detection end of the pressure sensor in the receiving space, and then apply air pressure to the pressure sensor through the air guide rod 21, so as to complete the test of the detection accuracy of the pressure sensor.

[0033] In this embodiment, referring to Figure 4 , the sealing head 22 includes a cylinder body 221 sleeved on the outer periphery of the air guide rod 21, and a sealing ring 222 extending from the circumferential side of one end of the cylinder body 221. The receiving space is formed within the sealing ring 222, and the inner diameter of the sealing ring 222 is adapted to the detection end of the pressure sensor. In this embodiment, the cylinder body 221 and the sealing ring 222 are integrally formed. By using sealing heads 22 with different inner diameters, different sizes of pressure sensors can be effectively adapted, thus further improving the adaptability to different pressure sensors.

[0034] Referring to Figure 4 , a first air passage 211 for outputting gas is provided in the air guide rod 21, and a second air passage 223 communicating with the first air passage 211 is provided in the cylinder body 221. The second air passage 223 is used to communicate with the air pressure device. Through the cooperation of the first air passage 211 and the second air passage 223, air pressure can be effectively applied to the pressure sensor.

[0035] Among them, in this embodiment, the inner diameter of the first air passage 211 is smaller than the inner diameter of the second air passage 223. Therefore, when installing the sealing head 22 on the outer periphery of the air guide rod 21, it is not necessary for the second air passage 223 of the sealing head 22 to be precisely aligned with the first air passage 211 of the air guide column, which improves the convenience of operation.

[0036] Referring to Figure 2 , the driving assembly 3 includes a stroke rod 31, a guide sleeve 32, a mounting seat 33, a first connecting rod 34, and a second connecting rod 35.

[0037] Referring to Figure 3, the air guide rod 21 is detachably connected to the stroke rod 31. The stroke rod 31 is slidably disposed within the guide sleeve 32 to limit the air guide rod 21 to approach or move away from the base 11. In this embodiment, one end of the air guide rod 21 is provided with a connecting rod 4, and the connecting rod 4 is threadedly connected to the stroke rod 31 so that the air guide rod 21 is detachably connected to the stroke rod 31. Therefore, in actual use, different pneumatic components 2 can be replaced according to different specifications of the pressure sensors to adapt to different pressure sensors. Among them, in this embodiment, the air guide rod 21 and the connecting rod 4 are integrally formed.

[0038] Referring to Figure 3 , the inner wall of the guide sleeve 32 is provided with a rib 5 extending along its axial direction, and the stroke rod 31 is slidably connected to the rib 5. By providing the rib 5, the rotation that may occur during the movement of the guide rod can be restricted. Continuing to refer to Figure 3 , one end of the first link 34 is hinged to the mounting seat 33, and one end of the second link 35 is hinged to the first link 34 and the other end is hinged to the end of the stroke rod 31 away from the air guide rod 21.

[0039] Therefore, by rotating the end of the first link 34 away from the mounting seat 33, the second link 35 can be driven to rotate, and then the stroke rod 31 can be driven to move along its axial direction, so that the air guide rod 21 approaches or moves away from the pressure sensor on the limit component 1, and thus the subsequent test of the detection accuracy of the pressure sensor can be completed.

[0040] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0041] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure sensor testing device, characterized in that: include: A limit assembly (1) comprises a base (11) abutting against the peripheral side of the pressure sensor, a baffle (12) abutting against one end of the pressure sensor, and an adjusting member (13) cooperatively connected to the baffle (12) and the base (11), wherein the adjusting member (13) is used to move the baffle (12) along the extension direction of the base (11); The pneumatic assembly (2) comprises an air guide rod (21) installed on a side of the base (11) away from the baffle (12), wherein the air guide rod (21) can be driven close to the base (11) to apply air pressure to the pressure sensor.

2. The pressure sensor testing device according to claim 1, characterized in that: The adjusting member (13) comprises an adjusting screw (131) and a limiting rod (132); the adjusting screw (131) is threadedly connected to the baffle (12); the adjusting screw (131) can also be rotatably connected to the base (11) along its axial direction; one end of the limiting rod (132) is fixedly connected to a surface of the baffle (12) close to the base (11), and the other end is slidably arranged in the base (11).

3. The pressure sensor testing device according to claim 1, characterized in that: The pneumatic assembly (2) further comprises a sealing head (22) which is detachably sleeved on the outer periphery of the air guide rod (21); the sealing head (22) and the air guide rod (21) form a housing space for enclosing the detection end of the pressure sensor on a surface close to the base (11).

4. The pressure sensor testing device according to claim 3, characterized in that: The sealing head (22) comprises a cylinder (221) sleeved on the outer periphery of the air guide rod (21), and a sealing ring (222) extending from the circumferential side of one end of the cylinder (221), the accommodating space is formed in the sealing ring (222), and the inner diameter of the sealing ring (222) is adapted to the detection end of the pressure sensor.

5. The pressure sensor testing device according to claim 4, characterized in that: The gas guide rod (21) is provided with a first gas channel (211) for outputting gas, the cylinder (221) is provided with a second gas channel (223) connected to the first gas channel (211), and the second gas channel (223) is used to communicate with a pneumatic device.

6. The pressure sensor testing device according to claim 5, characterized in that: The inner diameter of the first air channel (211) is smaller than the inner diameter of the second air channel (223).

7. The pressure sensor testing device according to claim 1, characterized in that: The invention also comprises a driving assembly (3) for driving the air guide rod (21) to move, wherein the driving assembly (3) comprises a travel rod (31) and a guide sleeve (32), wherein the air guide rod (21) is detachably connected to the travel rod (31), and the travel rod (31) is slidably arranged in the guide sleeve (32) to limit the air guide rod (21) from approaching or moving away from the base (11).

8. The pressure sensor testing device according to claim 7, characterized in that: The inner wall of the guide sleeve (32) is provided with a convex strip (5) extending along its axial direction, and the travel rod (31) is slidably connected to the convex strip (5).

9. The pressure sensor testing device according to claim 7, characterized in that: The driving assembly (3) further comprises a mounting seat (33), a first connecting rod (34) and a second connecting rod (35), wherein one end of the first connecting rod (34) is hinged to the mounting seat (33), and one end of the second connecting rod (35) is hinged to the first connecting rod (34), and the other end is hinged to an end of the travel rod (31) away from the gas guide rod (21).

10. The pressure sensor testing device according to claim 7, characterized in that: A connecting rod (4) is provided at one end of the air guide rod (21), and the connecting rod (4) is threadedly connected to the travel rod (31).

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