CN217305146U - Performance testing device for water quality measurement - Google Patents
Performance testing device for water quality measurement Download PDFInfo
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- CN217305146U CN217305146U CN202221151654.0U CN202221151654U CN217305146U CN 217305146 U CN217305146 U CN 217305146U CN 202221151654 U CN202221151654 U CN 202221151654U CN 217305146 U CN217305146 U CN 217305146U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The utility model discloses a water quality measurement's capability test device, include: the standard solution storage cavity is used for containing a standard solution to be tested; the water quality measuring device is connected with the standard solution storage cavity and is used for obtaining a measured value of the standard solution; the standard instrument comparison unit is connected with the standard solution storage cavity and is used for acquiring a nominal value of the standard solution; and the water temperature adjusting unit is used for adjusting the temperature of the standard solution. The utility model discloses can effectively guarantee quality of water sensor calibration and performance evaluation result accuracy, improve efficiency of software testing.
Description
Technical Field
The utility model relates to a water quality measurement technical field especially relates to a water quality measurement's capability test device.
Background
The existing online water quality detection methods all need to lead a water sample in a pipe network out of a branch pipe, flow and measurement are carried out simultaneously under the condition of a certain range of flow velocity, and the measured water sample is directly discharged after the measurement is finished. The long-term use not only can cause a large amount of drinking water to be discharged underground, waste water resources, but also can consume more electric energy, and is not suitable for being used in occasions without mains supply power supply. In order to realize that a detected water sample automatically flows into a water supply network after detection and can adapt to an application scene that the water flow speed in the water supply network is constantly changed and the change range is large, the conventional product adopts a method for periodically and self-circularly measuring the water quality on line by arranging a self-circulation measuring device in a water supply pipeline, and the detection method can not waste the detected drinking water and can not take away soil near the measuring device. However, since these products are mostly used in water supply lines of DN80 and above, the channel size is usually DN80 and above. At present, specific large-scale equipment is needed for calibration and test of the products, water consumption and reagent amount involved in the whole process are very large, water resource waste is easily caused, calibration and test efficiency is low, stability and uniformity of reagents used in the test process are difficult to guarantee, the measurement environment deviates from the actual application scene of a pipe network, and the accuracy of calibration and test results under the condition is difficult to control.
SUMMERY OF THE UTILITY MODEL
The utility model provides a water quality measuring's capability test device, it can effectively guarantee quality of water sensor calibration and performance evaluation result accuracy, improves efficiency of software testing.
In order to solve the technical problem, the utility model provides a water quality measuring performance testing device, include:
the standard solution storage cavity is used for containing a standard solution to be tested;
the water quality measuring device is connected with the standard solution storage cavity and is used for obtaining a measured value of the standard solution;
the standard instrument comparison unit is connected with the standard solution storage cavity and is used for acquiring a nominal value of the standard solution;
and the water temperature adjusting unit is used for adjusting the temperature of the standard solution.
Preferably, the performance testing device for water quality measurement further comprises a water pressure adjusting unit, and the water pressure adjusting unit is used for adjusting the pressure of the standard solution.
Preferably, an electric stirrer is arranged on the standard solution storage cavity.
Preferably, the performance testing device for water quality measurement further comprises a driving pump and a measuring pipeline, the measuring pipeline is communicated with the standard solution storage cavity, the water quality measuring device and the driving pump are arranged on the measuring pipeline, and the driving pump is at least used for driving the standard solution to flow in the measuring pipeline.
Preferably, the measuring pipeline is provided with a valve control, and the driving pump and the valve control are used for adjusting the flow rate of the standard solution entering the measuring pipeline.
Preferably, the water quality measuring device is a turbidity sensor, a residual chlorine sensor, or a pH sensor having a measuring vessel.
Preferably, the performance testing device for water quality measurement further comprises a connecting pipeline, the connecting pipeline is communicated with the standard solution storage cavity, and the standard instrument comparison unit is arranged on the connecting pipeline.
Preferably, the standard solution storage cavity is a light-proof material container.
Preferably, the standard solution storage cavity is a container made of a heat-insulating material.
Preferably, the standard solution storage cavity is a corrosion-resistant container.
The utility model provides a water quality measuring's capability test device, it includes standard solution deposit chamber, water quality measuring device, standard instrument contrast unit and temperature regulating unit, standard solution deposit chamber is used for holding the standard solution that awaits measuring, water quality measuring device is the device that needs carry out the performance evaluation, in work, the standard solution that awaits measuring that will dispose and accomplish is placed in standard solution deposit chamber, read the measured value that obtains the water quality parameter of standard solution in the standard solution deposit chamber through water quality measuring device, and measure the measured value that obtains the water quality parameter of standard solution in the standard solution deposit chamber through standard instrument contrast unit, then adjust the temperature of standard solution through the temperature regulating unit, measure respectively through water quality measuring device and standard instrument contrast unit once more and obtain measured value and nominal value, measured value and nominal value under the different temperatures through obtaining many times, the device can evaluate the performance of the water quality measuring device and compensate parameters so as to prevent the temperature from influencing the detection precision of the water quality measuring device.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the contents of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following description will particularly refer to specific embodiments of the present invention.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a performance testing device for water quality measurement according to the present invention;
fig. 2 is a schematic structural diagram of another embodiment of the performance testing device for water quality measurement according to the present invention;
in the figure: in the figure: 10. a standard solution storage chamber; 20. a water quality measuring device; 30. a circulation pipe; 40. driving the pump; 50. a water temperature adjusting unit; 60. a water pressure adjusting unit; 70. adjusting a valve; 80. a standard instrument comparison unit; 90. a stirrer; 100. a flow rate adjusting unit; 110. an off-line standard instrument comparison unit; 120. valve control; 130. measuring a pipeline; 140. connecting a pipeline; 150. the pump is driven.
Detailed Description
To make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
Example 1: referring to fig. 1, an embodiment of the present invention provides a performance testing apparatus for water quality measurement, including:
a standard solution storage chamber 10 for containing a standard solution to be tested;
the water quality measuring device 20 is connected with the standard solution storage cavity 10, and the water quality measuring device 20 is used for obtaining the measured value of the standard solution;
the standard instrument comparison unit 80 is connected with the standard solution storage cavity 10, and the standard instrument comparison unit 80 is used for acquiring a nominal value of the standard solution;
and a water temperature adjusting unit 50 for adjusting the temperature of the standard solution.
The embodiment provides a performance testing device for water quality measurement, which comprises a standard solution storage cavity 10, a water quality measuring device 20, a standard instrument comparison unit 80 and a water temperature adjusting unit 50, wherein the standard solution storage cavity 10 is used for containing a standard solution to be tested, the water quality measuring device 20 is a device needing performance evaluation, when the device works, the configured standard solution to be tested is placed in the standard solution storage cavity 10, a measured value of a water quality parameter of the standard solution in the standard solution storage cavity 10 is obtained by reading through the water quality measuring device 20, a measured value of a water quality parameter of the standard solution in the standard solution storage cavity 10 is obtained by measuring through the standard instrument comparison unit 80, then the temperature of the standard solution is adjusted through the water temperature adjusting unit 50, and the measured value and a nominal value are obtained by measuring through the water quality measuring device 20 and the standard instrument comparison unit 80 respectively, through the measured values and the nominal values at different temperatures obtained multiple times, the performance of the water quality measuring device 20 can be evaluated and the parameters can be compensated, so that the influence of the temperature on the detection accuracy of the water quality measuring device 20 can be prevented.
The performance testing device for water quality measurement in the embodiment has a simple overall structure, is convenient to test, and is more suitable for testing standard solution in a static state.
Specifically, the water quality measuring device 20 has a water quality sensor that is affected by the water temperature, but the present embodiment can obtain the influence of the temperature on the water quality sensor based on the test result, and can perform performance evaluation on the water quality measuring device 20.
Also, the water temperature adjusting unit 50 in the present embodiment may be a heating device provided on the standard solution storage chamber 10.
In a further implementation manner of this embodiment, the performance testing apparatus for water quality measurement further includes a water pressure adjusting unit 60, and the water pressure adjusting unit 60 is used for adjusting the pressure of the standard solution.
The water pressure adjusting unit 60 in this embodiment can adjust the water pressure of the standard solution, and then measure the measured value and the nominal value under different water pressures respectively through the water quality measuring device 20 and the standard instrument comparison unit 80, so as to prevent the influence of the water pressure on the detection accuracy of the water quality measuring device 20.
Specifically, the water pressure regulating unit 60 in the present embodiment may employ a booster pump or a liquid or gas booster device.
In a further embodiment of this embodiment, a motor-driven stirrer 90 is provided on the standard solution storage chamber 10.
The electric stirrer 90 in this embodiment can stir the standard solution in the standard solution storage cavity 10, so that the standard solution is more uniform, and the testing precision is ensured.
In a further implementation manner of this embodiment, the performance testing apparatus for water quality measurement further includes a driving pump 150 and a measuring pipe 130, the measuring pipe 130 is communicated with the standard solution storage chamber 10, the water quality measuring apparatus 20 and the driving pump 150 are disposed on the measuring pipe 130, and the driving pump 150 is at least used for driving the standard solution to flow in the measuring pipe 130.
The driving pump 150 in this embodiment can drive the standard solution in the standard solution storage chamber 10 into the measurement pipe 130, so that the water quality measuring device 20 installed on the measurement pipe 130 measures the standard solution.
In a further embodiment of the present embodiment, a valve control 120 is disposed on the measuring pipe 130, and the driving pump 150 and the valve control 120 are used for adjusting the flow rate of the standard solution entering the measuring pipe 130.
In a further possible embodiment of the present embodiment, the water quality measuring device 20 is a turbidity sensor, a residual chlorine sensor or a pH sensor with a measuring vessel.
In a further implementation manner of this embodiment, the performance testing apparatus for water quality measurement further includes a connection pipe 140, the connection pipe is communicated with the standard solution storage chamber 10, and the standard instrument comparison unit 80 is disposed on the connection pipe 140.
In a further embodiment of this embodiment, the standard solution storage chamber 10 is a light-shielding material container.
In a further embodiment of this embodiment, the standard solution storage chamber 10 is a container made of heat insulating material.
In a further embodiment of this embodiment, the standard solution storage chamber 10 is a corrosion-resistant container.
Example 2: referring to fig. 2, an embodiment of the present invention provides an online water quality measuring device performance testing system, including:
the standard solution storage cavity 10 is used for accommodating standard solutions with different water quality parameters;
the circulating pipeline 30, the circulating pipeline 30 communicates with the standard solution storage cavity 10;
a flow rate adjusting unit 100 at least for driving the standard solution to flow in the circulation pipe 30;
a standard instrument comparison unit 80 for obtaining the nominal values of the standard solutions with different water quality parameters;
the water quality measuring device 20 is arranged on the circulating pipeline 30, and the water quality measuring device 20 is used for obtaining the measured values of the standard solutions with different water quality parameters in the circulating pipeline 30;
the water quality measuring device 20 is calibrated, performance evaluated and parameter compensated based on the nominal value and the measured value.
The working process of the performance test system of the on-line water quality measuring device of the embodiment is
Firstly, preparing a plurality of standard solutions for water quality measurement, specifically, preparing a plurality of standard solutions for evaluating each water quality parameter;
then putting the standard solution for water quality measurement into a standard solution storage cavity 10;
then, the nominal value of each group of standard solution is obtained through measurement of a standard instrument comparison unit 80;
then, the standard solution in the standard solution storage chamber 10 is conveyed to the water quality measuring device 20 through the flow regulating unit 100 and measured by the water quality measuring device 20 to obtain a measured value of the standard solution;
and finally, calibrating, evaluating performance and compensating parameters of the water quality measuring device based on the nominal value and the measured value.
Therefore, the performance test system of the online water quality measuring device provided by the embodiment can greatly ensure the accuracy of the calibration and performance evaluation results of the water quality sensor, and in addition, the efficiency of the test can be improved.
In the performance test system of the online water quality measuring device in the embodiment, the nominal value and the measured value are obtained through the steps, and then the calibration, the performance evaluation and the parameter compensation are directly performed on the water quality measuring device based on the nominal value and the measured value, so that the measurement accuracy of the water quality measuring device can be improved, and the performance test of the water quality measuring device is simpler and more convenient.
In a further implementation manner of this embodiment, the online water quality measuring device performance testing system further includes: and the pressure adjusting unit is used for adjusting the pressure of the standard solutions with different water quality parameters in the circulating pipeline.
The online water quality measuring device performance test system in the embodiment can obtain the influence of water pressure on the measured value of the water quality measuring device, and can calibrate and correct parameters of the water quality measuring device based on the influence of the water pressure, so that the influence of the water pressure on the water quality measuring device can be prevented, and the measurement accuracy of the water quality measuring device can be improved.
In a further implementation manner of this embodiment, the system for testing the performance of the online water quality measuring device further includes: and the temperature adjusting unit is used for adjusting the temperature of the standard solution with different water quality parameters.
In this embodiment, the online performance testing system for the water quality measuring device can obtain the influence of the water temperature on the measured value of the water quality measuring device, and can calibrate and correct the parameters of the water quality measuring device based on the influence of the water temperature, so that the influence of the water temperature on the water quality measuring device can be prevented, and the measuring accuracy of the water quality measuring device can be further improved.
In a further implementation manner of this embodiment, the standard solution is a turbidity standard solution, a residual chlorine working standard solution, or a pH standard solution, and accordingly, the water quality measuring device specifically includes a turbidity sensor, a residual chlorine sensor, or a pH sensor and a corresponding measuring container.
The standard solution in this embodiment is a turbidity standard solution, a residual chlorine working standard solution, or a pH standard solution, and the water quality measuring device specifically includes a turbidity sensor, a residual chlorine sensor, or a pH sensor and a corresponding measuring container, but of course, the water quality measuring device in this embodiment may also include any water quality parameter sensor and a corresponding measuring container, such as a conductivity sensor and a measuring container thereof.
In a further embodiment of the present embodiment, the pressure regulating unit is configured to: and adjusting the water pressure of the standard solution passing through the water quality measuring device to obtain a pressure influence parameter of the water pressure in a rated pressure range of the measured value, and performing a water pressure influence test on the water quality measuring device based on the pressure influence parameter in the rated pressure range.
In this embodiment, measure in order to obtain the measured value through water quality measuring device to the standard solution of different hydraulic pressures, calculate the relation function that obtains water pressure and measured value, compensate through measuring the measured value of parameter under to different water pressure states based on the relation function, water pressure influence test operation process is simple and convenient, can obtain water pressure influence parameter fast, and it can be convenient for realize the settlement to water pressure influence parameter, has further promoted water quality measuring device's measuring accuracy.
In a further implementation of this embodiment, the temperature adjustment unit is configured to: and adjusting the temperature of the standard solution passing through the water quality measuring device to obtain a temperature influence parameter of the water temperature in a rated temperature range of the measured value, and performing a water temperature influence test on the water quality measuring device based on the temperature influence parameter in the rated temperature range.
In this embodiment, standard solutions with different temperatures are measured by the water quality measuring device to obtain a measured value, a relation function of the water temperature and the measured value is obtained through calculation, the measured value under different water temperatures is compensated by the measuring parameters based on the relation function, the water temperature influence test is simple and convenient to operate, the water temperature influence parameters can be rapidly obtained, the setting of the water temperature influence parameters can be conveniently realized, and the measuring accuracy of the water quality measuring device is further improved.
In a further implementation manner of this embodiment, the flow rate adjusting unit is further configured to: and adjusting the flow rate of the standard solution passing through the water quality measuring device to obtain a flow rate influence parameter of the flow rate in a rated flow rate range of the measured value, and performing a flow rate influence test on the water quality measuring device based on the flow rate influence parameter in the rated flow rate range.
In this embodiment, the online performance testing system for the water quality measuring device can obtain the influence of the flow rate on the measured value of the water quality measuring device, and can calibrate and correct the parameters of the water quality measuring device based on the influence of the flow rate, so that the influence of the flow rate on the water quality measuring device can be prevented, and the measurement accuracy of the water quality measuring device can be improved.
In a further implementation manner of this embodiment, the adjusting the water pressure, temperature or flow rate of the standard solution passing through the water quality measuring device to obtain a water pressure, temperature or flow rate influencing parameter of the water pressure, temperature or flow rate for the rated water pressure, temperature or flow rate range of the measured value, and the performing the water pressure, temperature or flow rate influencing test on the water quality measuring device based on the water pressure, temperature or flow rate influencing parameter of the rated water pressure, temperature or flow rate range specifically includes: the pressure, temperature or flow rate of the standard solution is changed through the pressure, temperature or flow rate adjusting unit according to the test requirement, the nominal value of the standard solution is obtained through the standard instrument comparison unit, the standard solution with different pressure, temperature or flow rate is measured through the water quality measuring device to obtain the measured value of the standard solution based on the change of the pressure, temperature or flow rate, and the difference value between the nominal value of the standard solution and the measured value of the standard solution based on the change of the pressure, temperature or flow rate is calculated to obtain the temperature compensation coefficient or judge whether the performance index requirement in the rated temperature range is met.
The influence test in this embodiment is easy and convenient to operate, can obtain water pressure, temperature and velocity of flow fast to the influence of water quality measuring device's measuring result, has further promoted water quality measuring device's measuring accuracy.
Specifically, the working process is as follows:
(1) preparing a residual chlorine working standard solution under the reference test condition;
(2) installing a residual chlorine measuring device on a performance test system of the water quality measuring device, injecting a prepared residual chlorine working standard solution into a storage cavity of a (working) standard solution, and controlling the temperature at a reference test temperature;
(3) starting a driving pump, exhausting, adjusting the water pressure and the water flow rate to rated working conditions, and calibrating the system according to the specification requirements (the system runs for a period of time after being started so that the adjustment and measurement of each unit are stable);
(4) continuously reading the measurement indication values of the residual chlorine measuring device and the standard instrument comparison unit for not less than 3 times, respectively taking the average values, and recording the average values as a measured value Xi and a nominal value Xa;
(5) after testing by adopting residual chlorine working standard solutions with different concentrations, m groups of measured values are obtained, wherein the measured values are (Xi1, Xa1), (Xi2, Xa2), … …, (Xim, Xam) (m is more than or equal to 2);
(6) and calculating a relation function formula of the nominal value and the measured value according to the m groups of measured values, and calibrating the measurement parameters of the residual chlorine measuring device by adopting a curve calibration method to ensure that Xi (x) of each calibration point is Xa.
By using the measuring device, the measured values of the residual chlorine measuring device at different temperatures, different pressures and different pH values can be obtained by changing the water temperature, the water pressure or the pH value, and a relation function formula of the nominal value and the measured value of the residual chlorine is calculated and obtained to compensate the measured parameters of the residual chlorine to a certain extent.
In the performance testing system of the online water quality measuring device in this embodiment, the standard instrument comparison unit includes an online standard instrument comparison unit and an offline standard instrument comparison unit 110, the online standard instrument comparison unit is used for obtaining the nominal values of the standard solutions with different water quality parameters, a sampling port is arranged on the circulating pipeline 30, and the offline standard instrument comparison unit is arranged at the sampling port.
The off-line standard instrument comparison unit in the embodiment can be used for calibrating and comparing the on-line standard instrument comparison unit, and the accuracy of the standard solution nominal value can be further ensured.
Specifically, the flow rate adjusting unit 100 in this embodiment includes a driving pump 40 and an adjusting valve 70, and in addition, a stirrer 90 is further disposed inside the standard solution storage chamber 10 in this embodiment, and the stirrer 90 may be an electric stirrer for ensuring the uniformity of the concentration of the internal (working) standard solution, and meanwhile, the storage chamber should have the characteristics of corrosion resistance, pressure resistance, light shielding, heat preservation, and the like.
The water temperature adjusting unit 50 in this embodiment facilitates controlling and adjusting the temperature of the standard solution, the water pressure adjusting unit 60 facilitates controlling and adjusting the water pressure of the standard solution, and the flow rate adjusting unit 100 facilitates controlling and adjusting the flow rate of the standard solution.
The embodiment is also correspondingly provided with a standard instrument comparison unit 80, specifically, the standard instrument comparison unit 80 can be a standard instrument on-line comparison unit, a measured solution flows through a pressure reducing valve and a regulating valve through a conveying pipeline and enters the standard instrument on-line comparison unit for magnitude determination after reaching a certain flow rate and pressure, wherein the on-line standard instrument is verified or calibrated by provincial and above metering mechanisms according to national standard regulations; besides the online quantity value determination by the online comparison unit, the device is also provided with an offline sampling port, sampling can be carried out to an offline standard instrument through the offline sampling port to carry out measurement and constant value, and the offline standard instrument can be verified or calibrated by provincial and above metering mechanisms according to the national standard. The other end of the standard instrument on-line comparison unit is connected with a standard solution storage cavity through a pipeline, and the (working) standard solution with a fixed value is circulated to the storage cavity for later use; the standard instrument on-line comparison unit can determine and adjust the nominal value of the (working) standard solution in the tested device in real time, and the real-time accuracy of the detection and calibration results is ensured.
The (working) standard solution, whose nominal value is determined, can be fed to the different units as required by means of control valves: by way of example: when the water quality measuring device is calibrated under the reference test condition, the valve control II, the valve control III, the valve control IV and the valve control I can be started, the water pressure, the water temperature and the flow rate of a (working) standard solution meet rated working conditions through the water pressure adjusting unit, the water temperature adjusting unit and the flow adjusting unit, then the water quality measuring device enters the water quality measuring device, and the water quality measuring device is calibrated according to the specification of a product specification; when the influence of water temperature on the measurement result is tested under the reference test condition, the valve control I, the valve control III, the valve control V and the valve control IV can be closed, so that the (working) standard solution enters the water temperature adjusting unit through the opened valve control II, the temperature of the (working) standard solution is regulated and controlled by a temperature regulating device (the upper limit of the temperature regulating range is not lower than 30 ℃ and the lower limit thereof is not higher than 0 ℃) and a high-precision temperature sensor (the measuring error is not more than +/-0.1 ℃) matched with the water temperature regulating unit, the (working) standard solution meeting the requirement of certain temperature change enters a system for circulation, obtaining a nominal value of the standard solution through a standard instrument comparison unit, obtaining a measured value of the standard solution under a certain temperature through measurement of a water quality measuring device, and evaluating the influence of the water temperature on a measuring result of the water quality measuring device by calculating a difference value between the nominal value of the standard solution and the measured value of the standard solution based on temperature change; when the influence of the water pressure on the measurement result is tested under the reference test condition, the valve control I, the valve control II, the valve control III and the valve control II can be closed, so that the (working) standard solution enters the water pressure regulating unit through the opened valve control, the pressure of the (working) standard solution is regulated and controlled by a pressure regulating device (the upper limit of the pressure regulating range is not lower than 1MPa, the lower limit is not higher than 0MPa) and a high-precision pressure sensor (the accuracy grade is not lower than 0.1 grade) matched with the water pressure regulating unit, the (working) standard solution meeting certain pressure change requirements enters a system for circulation, obtaining a nominal value of a standard solution through a standard instrument comparison unit, obtaining a measured value of the standard solution under a certain pressure through measurement of a water quality measuring device, and evaluating the influence of water pressure on a measuring result of the water quality measuring device by calculating a difference value between the nominal value of the standard solution and the measured value of the standard solution based on pressure change; besides the functions, the device can open and close the corresponding valve control according to the requirements, and realize the performance evaluation and parameter compensation of the water quality sensor under the influence of certain water temperature and water pressure.
The water quality measuring device is provided with a measured sensor (a turbidity sensor, a residual chlorine sensor, a pH sensor and the like) and a corresponding measuring container, a (working) standard solution meeting certain pressure, temperature and flow rate requirements enters the water quality measuring device, and the (working) standard solution after detection flows back to the standard solution storage cavity through a circulating pipeline to form a closed loop
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A performance testing device for water quality measurement is characterized by comprising:
the standard solution storage cavity is used for containing a standard solution to be tested;
the water quality measuring device is connected with the standard solution storage cavity and is used for obtaining a measured value of the standard solution;
the standard instrument comparison unit is connected with the standard solution storage cavity and is used for acquiring a nominal value of the standard solution;
and the water temperature adjusting unit is used for adjusting the temperature of the standard solution.
2. The apparatus for testing the performance of water quality measurement according to claim 1, further comprising a water pressure adjusting unit for adjusting the pressure of the standard solution.
3. The water quality measurement performance testing device according to claim 1, wherein an electric stirrer is arranged on the standard solution storage cavity.
4. The water quality measurement performance testing device according to claim 1, further comprising a driving pump and a measuring pipeline, wherein the measuring pipeline is communicated with the standard solution storage cavity, the water quality measuring device and the driving pump are arranged on the measuring pipeline, and the driving pump is at least used for driving the standard solution to flow in the measuring pipeline.
5. The water quality measurement performance testing device according to claim 4, wherein the measuring pipeline is provided with a valve control, and the driving pump and the valve control are used for adjusting the flow rate of the standard solution entering the measuring pipeline.
6. The water quality measurement performance testing device according to claim 1, wherein the water quality measuring device is a turbidity sensor, a residual chlorine sensor, or a pH sensor having a measuring vessel.
7. The water quality measurement performance testing device according to claim 1, further comprising a connecting pipeline, wherein the connecting pipeline is communicated with the standard solution storage cavity, and the standard instrument comparison unit is arranged on the connecting pipeline.
8. The water quality measurement performance testing device of claim 1, wherein the standard solution storage cavity is a light-shielding material container.
9. The water quality measurement performance testing device according to claim 1, wherein the standard solution storage chamber is a container made of a heat-insulating material.
10. The water quality measurement performance testing device according to claim 1, wherein the standard solution storage chamber is a corrosion-resistant container.
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| CN202221151654.0U CN217305146U (en) | 2022-05-13 | 2022-05-13 | Performance testing device for water quality measurement |
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| CN202221151654.0U CN217305146U (en) | 2022-05-13 | 2022-05-13 | Performance testing device for water quality measurement |
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