Mobile online refractometer calibration device

Abstract

The utility model discloses a mobile online refractometer calibration device which comprises a liquid storage tank, a delivery pump, a reference refractometer, a calibrated refractometer, a temperature sensor, a gear flowmeter, a plurality of three-way valves and a waste liquid tank, the liquid storage tank is used for storing a detection medium or a cleaning medium and is respectively connected with the delivery pump and the waste liquid tank through a first three-way valve, the delivery pump is respectively connected to the reference refractometer and the calibrated refractometer through a second three-way valve and a third three-way valve, and the reference refractometer and the calibrated refractometer are connected in parallel in a pipeline; temperature sensors are respectively arranged at the inlet ends and the outlet ends of the two valves, gear flow meters are arranged at the outlet ends, and finally the valves are connected to a liquid storage tank through a fourth three-way valve and a fifth three-way valve. The mobile online refractometer calibration device can be used for calibration in an internal circulation mode, and can also be connected into a working condition pipeline provided with a calibrated refractometer to dynamically calibrate the calibrated refractometer on a user site in an external circulation mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of measurement calibration, the field of instrument process verification, particularly relate to a mobile on -line refractometer calibration device. BACKGROUND

[0002] The refractive index (also known as refractive index, refractive index) is the specific inherent property of matter, and changes according to temperature and wavelength. For pure substances, the refractive index can be used to identify and distinguish samples. For binary mixtures (such as solute dissolved in solvent), the refractive index can be used to measure the concentration (commonly known as brix for indicating the concentration of sucrose solution and salinity for indicating the concentration of sodium chloride solution). For binary or multi-component mixtures with known composition, quality control can also be performed by monitoring the refractive index. Online refractometry is a process analysis technology. Its basic application is to use the data stream provided by the online refractometer to realize process relative trend judgment and real-time monitoring. On this basis, combined with reference data from process variables and analytical laboratory and other data streams, comprehensive data analysis can be carried out to realize real-time monitoring of product key quality attributes and association with key process parameters, and finally realize real-time release of product indicators. This helps to improve product quality, reduce production cost, improve production efficiency, reduce laboratory testing demand, and determine the opportunity for process improvement, and ultimately reduce the risk and cost of product production.

[0003] Online refractometers are usually installed on the pipeline of the user's production line, and some are not convenient to disassemble or can only be disassembled after production is stopped and sent to the measurement and detection agency for offline calibration. For such online instruments, users prefer to calibrate them on site.

[0004] Therefore, a mobile online refractometer calibration device is needed to solve the above problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0006] A mobile online refractometer calibration device, comprising a liquid storage tank; the liquid storage tank is connected with a first three-way valve, the first three-way valve is connected with a waste liquid tank and a delivery pump respectively, the delivery pump is connected with a second three-way valve, the second three-way valve is connected with a reference refractometer and a third three-way valve respectively; a fourth three-way valve is connected with the liquid storage tank, the reference refractometer and a fifth three-way valve respectively, the reference refractometer is connected with two first temperature sensors at both ends respectively, the two first temperature sensors are located between the second three-way valve and the fourth three-way valve, and the liquid storage tank is used for storing detection medium or cleaning medium.

[0007] Preferably, the delivery pump is a gear pump.

[0008] Preferably, the liquid storage tank is connected with a two-way electromagnetic valve at the top, and the two-way electromagnetic valve is used to inject cleaning medium or detection medium into the liquid storage tank.

[0009] Preferably, the fifth three-way valve and the third three-way valve are respectively connected with a second temperature sensor.

[0010] Preferably, the two second temperature sensors are respectively connected with the calibrated refractometer, and the two second temperature sensors are arranged between the fifth three-way valve and the third three-way valve.

[0011] Preferably, the fifth three-way valve is connected with a first gear flow meter, and the first gear flow meter is arranged between the fifth three-way valve and a second temperature sensor.

[0012] Preferably, the fourth three-way valve is connected with a second gear flow meter, and the second gear flow meter is arranged between the fourth three-way valve and a first temperature sensor.

[0013] Preferably, the fifth three-way valve and the third three-way valve are respectively connected with an external pipe, and the two external pipes are used to be connected with a working condition pipeline, and the working condition pipeline is provided with the calibrated refractometer.

[0014] Preferably, the connection is in the form of pipeline connection.

[0015] Thanks to the above technical scheme, the present application has the following technical progress compared with the prior art:

[0016] The present application can calibrate the calibrated refractometer on site through the internal circulation mode or the external circulation mode, without sending the calibrated refractometer to a measurement and detection mechanism, avoiding data deviation caused by offline static calibration, and meeting the on-site calibration demand of users. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in these drawings without creative labor.

[0018] Fig. 1 The structure diagram of the internal circulation mode of the mobile online refractometer calibration device of the present application;

[0019] Fig. 2 The structure diagram of the external circulation mode of the mobile online refractometer calibration device of the present application.

[0020] Main element symbol explanation: 1, two-way electromagnetic valve; 2, liquid storage tank; 3, first three-way valve; 4, waste liquid tank; 5, delivery pump; 6, second three-way valve; 7, first temperature sensor; 8, reference refractometer; 10, second gear flowmeter; 11, fourth three-way valve; 12, fifth three-way valve; 13, first gear flowmeter; 14, second temperature sensor; 15, calibrated refractometer; 17, third three-way valve; 18, working condition pipeline; 20, external pipe.

[0021] The following specific embodiments will further illustrate the present application in combination with the above drawings Specific embodiments

[0022] In order to make the person skilled in the art better understand the present application, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Unless otherwise defined, all technical and scientific terms used in this paper have the same meaning as understood by those skilled in the art of the present application. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to be inclusive. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to these processes, methods, products or devices.

[0023] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a particular embodiment logically divided into parts. It is explicitly contemplated that embodiments described herein can be combined to include claims directed to combinations of the embodiments.

[0024] Referring to Figs. 1-2 The embodiment of the application provides a mobile online refractometer calibration device, which comprises a liquid storage tank 2; the liquid storage tank 2 is connected with a first three-way valve 3; the first three-way valve 3 is connected with a waste liquid tank 4 and a delivery pump 5 respectively; the delivery pump 5 is connected with a second three-way valve 6; the second three-way valve 6 is connected with a reference refractometer 8 and a third three-way valve 17 respectively; a fourth three-way valve 11 is connected with the top of the liquid storage tank 2, the reference refractometer 8 and a fifth three-way valve 12 respectively; the reference refractometer 8 is connected with two first temperature sensors 7 at two ends respectively; the two first temperature sensors 7 are located between the second three-way valve 6 and the fourth three-way valve 11; and the liquid storage tank 2 is used for storing a detection medium or a cleaning medium.

[0025] Further, the delivery pump 5 is a gear pump.

[0026] In an embodiment of the application, two-way electromagnetic valves 1 are connected with the top of the liquid storage tank 2; and the two-way electromagnetic valves 1 are used for injecting the cleaning medium or the detection medium into the liquid storage tank 2.

[0027] In an embodiment of the application, the fifth three-way valve 12 and the third three-way valve 17 are connected with a second temperature sensor 14 respectively.

[0028] In an embodiment of the application, two second temperature sensors 14 are connected with a calibrated refractometer 15 respectively; and the two second temperature sensors 14 are arranged between the fifth three-way valve 12 and the third three-way valve 17.

[0029] In an embodiment of the application, the fifth three-way valve 12 is connected with a first gear flowmeter 13; and the first gear flowmeter 13 is arranged between the fifth three-way valve 12 and a second temperature sensor 14.

[0030] In an embodiment of the application, the fourth three-way valve 11 is connected with a second gear flowmeter 10; and the second gear flowmeter 10 is arranged between the fourth three-way valve 11 and a first temperature sensor 7.

[0031] In an embodiment of the application, the fifth three-way valve 12 and the third three-way valve 17 are connected with external pipes 20 respectively; the two external pipes 20 are used for being connected with working condition pipelines 18; and the calibrated refractometer 15 is arranged on the working condition pipelines 18.

[0032] In an embodiment of the utility model, the connection is in the mode of pipeline connection.

[0033] The use flow of the utility model is:

[0034] Please refer to Fig. 1 , the internal circulation mode: close the connection of the first three-way valve 3 and the waste liquid tank 4, close the connection of the fifth three-way valve 12 and the external pipe 20, close the connection of the third three-way valve 17 and the external pipe 20, install the calibrated refractometer 15 to the work station, make the calibrated refractometer 15 connect with two second temperature sensors 14 respectively, add liquid medium or material into the liquid storage tank 2 through two electromagnetic valves 1, start the delivery pump 5, make the liquid medium or material circulate in the pipeline, after the difference between the indication of two first temperature sensors 7 and two second temperature sensors 14 meets the requirement of calibration, and the indication of the reference refractometer 8 and the calibrated refractometer 15 tends to be stable, record the refractive index or concentration indication and temperature indication of the reference refractometer 8 and the calibrated refractometer 15 respectively, take the refractive index or concentration indication of the reference refractometer 8 as the standard value of refractive index or concentration, take the average value of the temperature indication of two second temperature sensors 14 as the standard value of temperature, take the difference between the indication of the calibrated refractometer 15 and the standard value as the indication error of the calibrated refractometer 15, and get the refractive index or concentration indication error and temperature indication error of the calibrated refractometer 15 respectively.

[0035] Please refer to Fig. 2, the outer circulation mode: (the working condition pipeline 18 should contain two bypasses for reference to the flow path of the refractometer 8, and the working condition pipeline 18 is provided with a calibrated refractometer 15): close the connection between the fifth three-way valve 12 and the first gear flow meter 13, close the connection between the third three-way valve 17 and the corresponding second temperature sensor 14, close the connection between the fourth three-way valve 11 and the constant temperature liquid storage tank 2; close the connection between the second three-way valve 6 and the delivery pump 5; connect the two external pipes 20 to the two bypasses of the working condition pipeline 18 respectively, so that the calibrated refractometer 15 and the reference refractometer 8 form a parallel flow path, after the difference between the indications of the two first temperature sensors 7 meets the requirements of calibration, and the indications of the reference refractometer 8 and the calibrated refractometer 15 tend to be stable, record the refractive index or concentration indication and the temperature indication of the reference refractometer 8 and the calibrated refractometer 15 respectively, take the refractive index or concentration indication of the reference refractometer 8 as the standard value of the refractive index or concentration, take the average value of the temperature indications of the two first temperature sensors 7 as the standard value of the temperature, and take the difference between the indication of the calibrated refractometer 15 and the standard value as the indication error of the calibrated refractometer 15, to obtain the refractive index or concentration indication error and the temperature indication error of the calibrated refractometer 15 respectively. After the detection is completed, disconnect the bypass connection between the external pipe 20 and the working condition pipeline 18; open the connection between the first three-way valve 3 and the waste liquid tank 4, and discharge the material to the waste liquid tank 4, and add cleaning medium through the two solenoid valves 1 to clean the pipeline.

[0036] The above has made a detailed description of the utility model in general, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, without departing from the spirit of the utility model, the modifications or improvements are within the scope of the utility model.

Claims

1. A mobile in-line refractometer calibration device, characterized by: The application relates to a liquid storage tank (2) connected with a first three-way valve (3), the first three-way valve (3) being connected with a waste liquid tank (4) and a delivery pump (5) respectively, the delivery pump (5) being connected with a second three-way valve (6), the second three-way valve (6) being connected with a reference refractometer (8) and a third three-way valve (17) respectively, a fourth three-way valve (11) being connected with the liquid storage tank (2), the reference refractometer (8) and a fifth three-way valve (12) respectively, the reference refractometer (8) being connected with two first temperature sensors (7) at two ends, the two first temperature sensors (7) being arranged between the second three-way valve (6) and the fourth three-way valve (11), and the liquid storage tank (2) being used for storing detection medium or cleaning medium.

2. The mobile online refractometer calibration device of claim 1, wherein: The fifth three-way valve (12) and the third three-way valve (17) are connected with a second temperature sensor (14) respectively.

3. The mobile in-line refractometer calibration device of claim 2, wherein: The two second temperature sensors (14) are connected with a calibrated refractometer (15) respectively, and the two second temperature sensors (14) are arranged between the fifth three-way valve (12) and the third three-way valve (17).

4. The mobile online refractometer calibration device of claim 1, wherein: The liquid storage tank (2) is connected with two two-way electromagnetic valves (1) at the top, and the two two-way electromagnetic valves (1) are used for injecting the detection medium or the cleaning medium into the liquid storage tank (2).

5. The mobile online refractometer calibration device of claim 1, wherein: The fifth three-way valve (12) is connected with a first gear flowmeter (13), and the first gear flowmeter (13) is arranged between the fifth three-way valve (12) and a second temperature sensor (14).

6. The mobile online refractometer calibration device of claim 1, wherein: The fourth three-way valve (11) is connected with a second gear flowmeter (10), and the second gear flowmeter (10) is arranged between the fourth three-way valve (11) and a first temperature sensor (7).

7. The mobile online refractometer calibration device of claim 1, wherein: The fifth three-way valve (12) and the third three-way valve (17) are connected with an external pipe (20) respectively, and the two external pipes (20) are used for being connected with working condition pipelines (18), and the working condition pipelines (18) are provided with the calibrated refractometer (15).

Images