Instrument performance testing device for sensors

Abstract

The application relates to the technical field of instrument performance test, and discloses a sensor instrument performance test device, which comprises an instrument performance test device, the instrument performance test device comprises a solution tank, a heater, a stirrer, a cooler, a heat exchanger, a sample water cup and pipeline valves, the stirrer is installed at the top of the solution tank and used for stirring internal solution, the heater is installed on the inner wall of the solution tank and used for regulating the temperature of the internal solution of the solution tank, the solution tank is connected with a buffer tank through a pipeline and a circulating pump, and the buffer tank is in communication with a damper, a filter and the cooler through pipelines in sequence. The sensor instrument performance test device, the instrument performance test device can test the stability and reliability of a pH sensor from strong acid to strong alkali, from normal temperature to high temperature, from normal pressure to high pressure, and meanwhile, solution temperature regulation is more accurate, solution circulation is more smooth, so that the instrument performance test device can finely and conveniently detect the pH sensor.

Description

Technical Field

[0001] This application relates to the field of instrument performance testing technology, specifically to an instrument performance testing device for sensors. Background Technology

[0002] A pH sensor is a device used to detect hydrogen ions (H+) in a solution. + A pH sensor is a device that converts pH concentration into an electrical signal output; its core function is to measure the acidity or alkalinity (pH value) of a solution. During testing, the pH sensor is evaluated using an instrument performance testing device. This device is typically a flow cell or clamp that allows for rapid solution switching. The pH sensor is quickly moved from one buffer solution to another with a significantly different pH value, while a data logger or computer-connected software records the pH value change over time, thus completing the pH sensor test.

[0003] Existing instrument performance testing devices suffer from insufficient precision in solution temperature control and inconvenient solution replacement for different pH values, resulting in inaccurate and slow pH sensor detection.

[0004] Therefore, there is an urgent need for a sensor performance testing device to solve the problem of insufficient accuracy and speed in pH sensor detection. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a performance testing device for sensors, which has the advantage of improving the detection accuracy of pH sensors and solves the problem of insufficient accuracy and speed in pH sensor detection.

[0006] To achieve the above objectives, this application provides the following technical solution: a sensor instrument performance testing device, comprising an instrument performance testing device, which includes a solution tank, a heater, a stirrer, a cooler, a heat exchanger, a sample cup, and pipeline valves. The stirrer is installed on the top of the solution tank for stirring the internal solution. The heater is installed on the inner wall of the solution tank for regulating the temperature of the solution inside the tank. The solution tank is connected to a buffer tank via pipelines and a circulation pump. The buffer tank is connected to a damper, a filter, and a cooler in sequence via pipelines. The cooler is connected to the solution tank via pipes and a shut-off valve, forming a circulation loop. The cooler is connected to the sample cup via a pipe and a shut-off valve, and the sample cup is connected to the solution tank via a pipe and a shut-off valve, forming a second circulation loop. The filter is connected to the solution tank via a pipe in sequence through a shut-off valve, forming a third circulation loop. A temperature controller is installed on the pipe between the filter and the damper, and the temperature controller is connected to the solution tank through the pipe.

[0007] Preferably, a shut-off valve is installed on the top of the sample cup.

[0008] Preferably, the cooler is connected to another cooler via a pipe to form a circulation loop.

[0009] Preferably, the solution tank is provided with a drain outlet at the bottom, a ball valve is provided on the drain outlet, and a pH electrode interface is provided at the top of the solution tank.

[0010] Preferably, a metering pump is connected to the bottom of the solution tank via a pipe, and the metering pump is connected to a heat dissipation tank and a water heater via a pipe. A cooler body is installed on the pipe connecting the heat dissipation tank to the damper and the filter.

[0011] Preferably, a pH electrode interface 2 is provided on the pipe between the filter and the solution tank.

[0012] In summary, the beneficial effects of this application are: This sensor uses an instrument performance testing device that tests the stability and reliability of the pH sensor from strong acids to strong bases, from room temperature to high temperature, and from normal pressure to high pressure. At the same time, it detects more precise solution temperature regulation and smoother solution circulation, enabling the instrument performance testing device to perform precise and convenient testing of the pH sensor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the instrument performance testing device of this application; Figure 2 This is a rear view structural diagram of the instrument performance testing device of this application; Figure 3 This is a front view structural diagram of the instrument performance testing device of this application; Figure 4 This is a schematic diagram of the instrument performance testing device system structure of this application.

[0014] The components are: 1. pH electrode interface one; 2. Metering pump; 3. pH electrode interface two; 4. Cooler body; 5. Heat dissipation tank; 6. Water heater; 7. Drain outlet. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0016] Please see Figure 1-4The sensor instrument performance testing device includes an instrument performance testing device, which comprises a solution tank, a heater, a stirrer, a cooler, a heat exchanger, a sample cup, and pipeline valves. The stirrer is installed on the top of the solution tank for stirring the internal solution. The heater is installed on the inner wall of the solution tank for regulating the temperature of the solution inside the tank. The solution tank is connected to a buffer tank via pipelines and a circulation pump. The buffer tank is connected to a damper, a filter, and a cooler in sequence via pipelines.

[0017] With the above technical solution, after the pH sensor is placed inside the solution tank, a solution is added to the solution tank, the stirrer is started to stir the solution, and the heater is started to heat the solution. Solutions with different pH values ​​enter the solution tank to test the performance of the pH sensor. Specifically, the cooler is connected to the solution tank through pipes and shut-off valves to form a circulation loop. The circulation pump is started, and the circulation pump sequentially flows the solution into the buffer tank and the damper. After being filtered by the filter, the solution flows back into the solution tank through the shut-off valve. This circuit performs high-temperature and high-pressure detection on the pH sensor.

[0018] The cooler is connected to the sample cup via pipes and a shut-off valve, and the sample cup is connected to the solution tank via pipes and a shut-off valve, forming a second circulation loop. This loop is used for room temperature measurement of the pH sensor. The solution enters the sample cup from the filter. The solution in the sample cup can be tested to determine the pH value and ensure the accuracy of the test. The tested solution is then returned to the solution tank.

[0019] The filter is connected to the solution tank via pipes, which are then connected to the shut-off valve in sequence, forming a third circulation loop. The filtered solution is returned to the solution tank through a shut-off valve, while the filtered solids are returned to the solution tank through a bypass.

[0020] A temperature controller is installed on the pipe between the filter and the damper, and the temperature controller is connected to the solution tank through the pipe.

[0021] Through the above technical solution, the temperature controller can detect the temperature of the circulating solution and observe the temperature of the solution in real time. When the temperature controller detects the corresponding temperature, it controls the electric heating to achieve the required measured temperature.

[0022] Specifically, a check valve is installed on the top of the sample cup.

[0023] The above technical solution enables the check valve to prevent acid and alkaline gases from entering the indoor environment.

[0024] Specifically, the cooler is connected to another cooler through pipes to form a circulation loop.

[0025] Through the above technical solution, the two coolers form a circulation loop to cool the solution.

[0026] Specifically, a drain outlet 7 is provided at the bottom of the solution tank, and a ball valve is provided on the drain outlet 7. A pH electrode interface 1 is provided at the top of the solution tank. A metering pump 2 is connected to the bottom of the solution tank through a pipe. The metering pump 2 is connected to a heat dissipation tank 5 and a water heater 6 through a pipe. A cooler body 4 is provided on the pipe connecting the heat dissipation tank 5 to the damper and the filter. A pH electrode interface 2 3 is provided on the pipe between the filter and the solution tank.

[0027] When in use, the instrument performance testing device is mainly used to test the performance of instrument sensors under multiple operating conditions, such as different acid and alkali concentrations, high temperature, high pressure, normal temperature, and normal pressure. This system is used to establish these different operating conditions.

[0028] Figure 4 In the diagram, P1O1 represents the circulating pump, T101 represents the solution tank, T102 represents the sample cup, PV101 and PV102 represent the back pressure valve, BV101 and BV102 represent the ball valve, EX101 represents the cooler, GV101, GV102, GV103 and GV104 represent the shut-off valve, CV1 and CV2 represent the check valve, BF101 represents the damper, BF102 represents the buffer tank, PI101, PI102 and PI103 represent the pressure gauge, LS101 represents the level switch, FL101 represents the filter, AG101 represents the stirrer, H101 represents the heater, and TI101 represents the temperature controller.

[0029] This system consists of a solution tank of approximately 60L, a 2KW electric heater, a 1.2MPa diaphragm metering pump, a high-pressure back pressure valve, a cooler, a thermometer, an electric contact pressure gauge, a stirrer, and corresponding valves, forming a closed-loop circulation system. The container is electrically heated to provide the required temperature. The pump and back pressure valve provide the required pressure.

[0030] First, add solutions of different concentrations into the solution tank and mix them thoroughly using a stirrer.

[0031] High-temperature setup: Two 2.0kW electric heaters (H101, H102) are installed in water tank T101, and the medium temperature can be maintained between 30-95 degrees Celsius via a temperature controller. A stirrer is used to agitate the medium, ensuring uniform temperature. Four instrument sensors are installed on the solution tank to measure parameters of the medium at different temperatures, thus analyzing the impact of temperature on instrument performance.

[0032] High pressure establishment: Diaphragm pump P101 has a flow rate of 330 L / H and a pressure of 1.2 MPa. Metering pump 2 has a PTFE body, is temperature resistant to 100℃, and has a pressure gauge at the pump outlet. The required pressure is then established through a high-pressure back pressure valve PV101. The back pressure valve is set to a maximum of 1.0 MPa (adjustable, minimum 0.1 MPa). This area is the high-pressure zone. Sensors pH105 and pH106 are used to measure the parameters of the sensors under different pressure conditions.

[0033] At ambient temperature and pressure: The system is equipped with a cooling zone that can rapidly cool the sample water to ambient temperature through heat exchange, providing a suitable temperature for sensor measurement and for use in the sample cup. Sensors at pH 107 and pH 108 are used to measure parameters under ambient temperature and pressure conditions; the solution in the sample cup is used for measurements by the COD analyzer, total phosphorus analyzer, and total nitrogen analyzer.

[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sensor instrument performance testing device, comprising an instrument performance testing device, characterized in that: The instrument performance testing device includes a solution tank, a heater, a stirrer, a cooler, a heat exchanger, a sample cup, and pipeline valves. The stirrer is installed on the top of the solution tank to stir the internal solution. The heater is installed on the inner wall of the solution tank to regulate the temperature of the solution inside the tank. The solution tank is connected to a buffer tank through pipelines and a circulation pump. The buffer tank is connected to a damper, a filter, and a cooler in sequence through pipelines. The cooler is connected to the solution tank via pipes and a shut-off valve, forming a circulation loop. The cooler is connected to the sample cup via a pipe and a shut-off valve, and the sample cup is connected to the solution tank via a pipe and a shut-off valve, forming a second circulation loop. The filter is connected to the solution tank via a pipe in sequence through a shut-off valve, forming a third circulation loop. A temperature controller is installed on the pipe between the filter and the damper, and the temperature controller is connected to the solution tank through the pipe.

2. The sensor instrument performance testing device according to claim 1, characterized in that: A shut-off valve is installed on the top of the sample cup.

3. The sensor instrument performance testing device according to claim 1, characterized in that: The cooler is connected to another cooler via a pipe to form a circulation loop.

4. The sensor instrument performance testing device according to claim 1, characterized in that: The solution tank is provided with a drain outlet (7) at the bottom, and a ball valve is provided on the drain outlet (7). The solution tank is provided with a pH electrode interface (1) at the top.

5. The sensor instrument performance testing device according to claim 1, characterized in that: The bottom of the solution tank is connected to a metering pump (2) via a pipe. The metering pump (2) is connected to a heat dissipation tank (5) and a water heater (6) via a pipe. A cooler body (4) is installed on the pipe connecting the heat dissipation tank (5) to the damper and the filter.

6. The sensor instrument performance testing device according to claim 1, characterized in that: A pH electrode interface 2 (3) is provided on the pipe between the filter and the solution tank.

Images