Pressure sensor accuracy test equipment

Abstract

The utility model provides a pressure sensor accuracy test device comprising a water tank filled with water, one side of the water tank is correspondingly provided with a pressure pump, the other side of the water tank is correspondingly provided with a pressure gauge, the top of the water tank is correspondingly provided with a measurement interface, the measurement interface is correspondingly provided with a pressure sensor to be tested, and the pressure sensor to be tested is connected with the pressure pump. And the pressure pump, the pressure gauge and the pressure sensor to be tested are correspondingly and electrically connected with an external controller. According to the utility model, a gas pressure environment is replaced by a liquid pressure environment, so that the pressure conduction delay is effectively avoided, and the timeliness of the test sensor is ensured; meanwhile, the device can provide a dynamic pressure environment so as to simulate the change of environmental pressure to adjust the water pressure condition in the water tank, so that the accuracy calibration test of the pressure sensor is realized, the use limitation of the device is effectively reduced, the use work is very convenient, and the practicability is strong.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of pressure sensors, and particularly relates to a pressure sensor accuracy test 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 available output electrical signal according to a certain rule. The pressure sensor is one of the most commonly used sensors in industrial practice, and is widely used in various industrial automatic control environments, involving many industries such as water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, electric power, ships, machine tools, pipelines, etc.

[0003] When in use, the pressure sensor usually needs to be calibrated and tested to determine whether its value is accurate. The traditional test method generally directly uses the existing pressure gauge calibrator, which can only provide a fixed pressure value and cannot provide a dynamic pressure environment, so it can only be used for the measurement of fixed pressure values, and its use limitations are relatively large; at the same time, the traditional pressure test equipment usually has a gas pressure environment, resulting in a time delay in pressure conduction and being unable to test the timeliness of the sensor. Therefore, it is necessary to propose an improvement measure to solve the above technical problems.

[0004] It should be noted that the above content belongs to the technical cognition scope of the inventor. Due to the vast and complex technical content in this field, the above content of this application does not necessarily constitute the prior art. Content of the Utility Model

[0005] 1. Technical problems to be solved by the utility model:

[0006] The utility model provides a pressure sensor accuracy test device to solve the technical problems existing in the above background art.

[0007] 2. Technical solution:

[0008] To achieve the above object, the technical solution provided by the utility model is: a pressure sensor accuracy test device, including a water tank filled with water, a pressure pump is correspondingly installed on one side of the water tank, a pressure gauge is correspondingly installed on the other side of the water tank, a measurement interface is correspondingly provided at the top of the water tank, a pressure sensor to be tested is correspondingly installed and connected at the measurement interface, and the pressure pump, the pressure gauge, and the pressure sensor to be tested are correspondingly electrically connected to an external controller.

[0009] Further, a water injection port is also correspondingly provided at the top of the water tank.

[0010] Further, the pressure pump adopts a plunger pump.

[0011] Further, it further includes a transparent protective cover. The bottom and the rear side of the transparent protective cover are open. At the corresponding positions at both ends of the rear side of the transparent protective cover, there are correspondingly provided T-shaped limiting insertion strips; on the outer wall of the water tank where a pressure gauge is installed, there are correspondingly provided vertical clamping strips at the corresponding positions on both sides. On the clamping strips, there are correspondingly provided vertically penetrating T-shaped clamping grooves, and the limiting insertion strips are correspondingly and vertically slidably inserted into the T-shaped clamping grooves of the clamping strips.

[0012] Further, on the outer wall of the water tank where a pressure pump is installed, there are correspondingly provided fixed rods on both sides. Between the outer ends of the two fixed rods, there is correspondingly connected an arc-shaped plate. At the corresponding position at the bottom of the arc-shaped plate, there is a threaded installation of an adjusting bolt. The head of the adjusting bolt is correspondingly placed at the bottom end. The threaded rod end of the adjusting bolt passes through the arc-shaped plate and is correspondingly connected with a resisting block, and the pressure pump is supported and resisted at the bottom through the resisting block.

[0013] Further, a rubber pad is correspondingly provided at the bottom of the water tank.

[0014] Further, a vibration sensor can be correspondingly magnetically installed on the outer wall of the water tank.

[0015] 3. Beneficial effects:

[0016] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0017] The present utility model is reasonably designed. By adopting a liquid pressure environment to replace a gas pressure environment, it effectively avoids the delay of pressure conduction to ensure the timeliness of the test sensor; at the same time, the present utility model realizes the automatic power control of the pressure pump through a controller, and controls and adjusts the pushing distance and pushing frequency of the pressure pump through the controller, so that the pressure change shows an alternating pattern of peaks and valleys, thereby being able to provide a dynamic pressure environment to simulate the change of environmental pressure to adjust the water pressure in the water tank, and further realizing the accuracy calibration test of the pressure sensor. This method effectively reduces its usage limitations and is very convenient to use.

[0018] In addition, the present utility model also detachably installs a transparent protective cover outside the pressure gauge on one side of the water tank, which can play a protective role for the pressure gauge to avoid being accidentally damaged by external objects, and the transparent protective cover can be quickly disassembled and assembled, and the staff can also clearly see the working condition of the pressure gauge inside. The settings of the fixed rod, arc-shaped plate, adjusting bolt, and resisting block can also play a supporting role for the pressure pump to avoid the pressure pump from shifting and sinking after long-term work and ensure its working reliability. Its overall design is simple and ingenious, and has strong practicability.

[0019] It should be noted that the structures not introduced in the present utility model, since they do not involve the design key points and improvement directions of the present utility model, are the same as the prior art or can be implemented by using the prior art, and will not be elaborated here. Description of the Drawings

[0020] Figure 1 Schematic diagram of the connection structure of the test equipment of the present utility model;

[0021] Figure 2 Schematic diagram of the structure with a transparent protective cover installed on the water tank of the present utility model;

[0022] Figure 3 Schematic diagram of the structure without a transparent protective cover installed on the water tank of the present utility model;

[0023] Figure 4 Schematic diagram of the structure of the transparent protective cover of the present utility model;

[0024] Figure 5 Schematic diagram of the side view of the installation of the adjusting bolt on one side of the water tank of the present utility model.

[0025] Reference numerals:

[0026] 1. Water tank; 101. Measurement interface; 102. Water injection port; 2. Pressure pump; 3. Pressure gauge; 4. Controller; 5. Transparent protective cover; 501. Limit insertion strip; 6. Clamping strip; 7. Fixed rod; 701. Arc-shaped plate; 8. Adjusting bolt; 801. Head; 9. Block; 10. Rubber pad. Detailed implementation manners

[0027] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0030] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "linked", "fixed", "provided with", "arranged at" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment

[0031] Refer to the attached Figures 1-5 Referring to the attached drawings, a pressure sensor accuracy testing device of this embodiment includes a water tank 1 filled with water. A water injection port 102 is correspondingly opened on one side of the top of the water tank 1. A valve or a sealing plug can be correspondingly installed at the water injection port 102, and the water tank 1 can be filled with water through the water injection port 102 and then sealed. A pressure pump 2 is correspondingly installed on one side of the water tank 1. Specifically, the pressure pump 2 can adopt a plunger pump capable of speed regulation. A pressure gauge 3 capable of outputting pressure values is correspondingly installed on the other side of the water tank 1 for monitoring and recording the pressure in the pipeline of the water tank 1. A measurement interface 101 is correspondingly provided on the other side of the top of the water tank 1, and a pressure sensor to be tested is correspondingly installed and connected at the measurement interface 101.

[0032] The pressure pump 2, the pressure gauge 3, and the pressure sensor to be tested at the measurement interface 101 are all correspondingly electrically connected to an external controller 4. The values of the pressure gauge 3 and the pressure sensor can be transmitted to the controller 4 for real-time comparison and display. The pressure pump 2 can achieve automatic power control through the controller 4. By controlling the controller 4, the pushing distance and pushing frequency of the pressure pump 2 are adjusted so that the pressure change presents alternately as peaks and valleys, thereby being able to simulate the environmental pressure change to adjust the water pressure in the water tank 1. Then, by comparing the value of the pressure sensor to be tested with the value of the pressure gauge 3, the accuracy calibration test of the pressure sensor can be realized.

[0033] It should be noted that a pressure sensor accuracy testing device according to this embodiment further includes a transparent protective cover 5, which can be made of a transparent plastic shell or a transparent glass shell. The bottom and the rear side of the transparent protective cover 5 are open. Corresponding T-shaped limiting insertion strips 501 are provided at both ends of the rear side of the transparent protective cover 5. On the outer wall of the water tank 1 where the pressure gauge 3 is installed, corresponding vertical clamping strips 6 are provided on both sides. Vertically penetrating T-shaped clamping grooves are correspondingly provided on the clamping strips 6. The limiting insertion strips 501 are correspondingly and vertically slidably inserted into the T-shaped clamping grooves of the clamping strips 6. The top of the rear side of the transparent protective cover 5 is correspondingly abutted against the top of the clamping strip 6 to achieve limiting and fixing. The transparent protective cover 5 plays a protective role for the pressure gauge 3 to prevent it from being accidentally damaged by external objects. Moreover, the installation and disassembly of the transparent protective cover 5 are very convenient, and the staff can also clearly see the working condition of the pressure gauge 3 inside it.

[0034] On the outer wall of the water tank 1 where the pressure pump 2 is installed, corresponding fixing rods 7 are provided on both sides. An arc-shaped plate 701 is correspondingly connected between the outer ends of the two fixing rods 7. An adjusting bolt 8 is correspondingly threadedly installed at the bottom of the arc-shaped plate 701. The head 801 of the adjusting bolt 8 is correspondingly placed at the bottom end. The threaded rod end of the adjusting bolt 8 passes through the arc-shaped plate 701 and is correspondingly connected with a resisting block 9. By adjusting the height of the resisting block 9 through the adjusting bolt 8, the resisting block 9 correspondingly supports and abuts against the bottom of the pressure pump 2, so as to play a supporting role for the pressure pump 2, prevent the pressure pump 2 from shifting and sinking after long-term work, and ensure its working reliability.

[0035] A non-slip rubber pad 10 is correspondingly provided at the bottom of the water tank 1 to play a role in anti-slip and noise reduction. The water tank 1 can be made of ferritic stainless steel. A vibration sensor can also be magnetically installed on the outer wall of the water tank 1 correspondingly. The vibration sensor can also be correspondingly electrically connected to the controller 4, so as to be able to stop the work of this testing device in time when the vibration intensity of the water tank 1 is too large, and avoid damage to the pressure gauge 3 and the pressure sensor.

[0036] The above embodiments only represent a certain implementation manner of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A pressure sensor accuracy testing device, characterized in that: It includes a water-filled water tank (1), a pressure pump (2) is correspondingly installed on one side of the water tank (1), a pressure gauge (3) is correspondingly installed on the other side of the water tank (1), a measurement interface (101) is correspondingly provided at the top of the water tank (1), and a pressure sensor to be tested is correspondingly installed and connected at the measurement interface (101). The pressure pump (2), the pressure gauge (3), and the pressure sensor to be tested are all correspondingly electrically connected to an external controller (4).

2. The accuracy testing device for a pressure sensor according to claim 1, characterized in that: An injection port (102) is also correspondingly provided at the top of the water tank (1).

3. The accuracy testing device for a pressure sensor according to claim 1, characterized in that: The pressure pump (2) is a plunger pump.

4. The accuracy testing device for a pressure sensor according to claim 1, characterized in that: It also includes a transparent protective cover (5). The bottom and the rear side of the transparent protective cover (5) are open. T-shaped limiting inserts (501) are correspondingly provided at both ends of the rear side of the transparent protective cover (5). Vertical clamping bars (6) are provided at corresponding positions on both outer walls of the water tank (1) where the pressure gauge (3) is installed. Vertical T-shaped clamping grooves are correspondingly provided on the clamping bars (6). The limiting inserts (501) are correspondingly vertically slidably inserted into the T-shaped clamping grooves of the clamping bars (6).

5. The accuracy testing device for a pressure sensor according to claim 1, characterized in that: Fixed rods (7) are correspondingly provided on both outer walls of the water tank (1) where the pressure pump (2) is installed. An arc-shaped plate (701) is correspondingly connected between the outer ends of the two fixed rods (7). An adjusting bolt (8) is correspondingly threadedly installed at the bottom of the arc-shaped plate (701). The head (801) of the adjusting bolt (8) is correspondingly placed at the bottom end. The threaded rod end of the adjusting bolt (8) passes through the arc-shaped plate (701) and is correspondingly connected to a resisting block (9), and the pressure pump (2) is supported and resisted by the resisting block (9).

6. The accuracy testing device for a pressure sensor according to claim 1, characterized in that: A rubber pad (10) is correspondingly provided at the bottom of the water tank (1).

7. An accuracy test device for a pressure sensor according to claim 1, characterized in that: A vibration sensor can also be correspondingly magnetically installed on the outer wall of the water tank (1).

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