Online concentration meter

Abstract

The utility model relates to the technical field of concentration meters, and particularly discloses an on-line concentration meter, which comprises an on-line concentration meter body, a plug arranged on the circumferential surface of the on-line concentration meter body, eight interfaces of the plug, and a reflection structure arranged on the circumferential surface of the on-line concentration meter body, the reflection structure comprises a prism, the prism is made of sapphire materials, the prism is arranged below the plug, and the plug is arranged below the prism. The reflection structure further comprises an LED light source, a light path optical fiber and a CCD array, by arranging the reflection structure, the instrument firstly changes the refraction angle in soluble liquid, the corresponding refractive index also changes, the refractive index and the concentration temperature rule are as follows: the refractive index is increased, the concentration is increased, the temperature is increased when the concentration is not changed, and the refractive index is reduced; therefore, the refractive index can directly reflect the concentration change, the temperature fluctuation influences the refractive index and the concentration, the sample concentration can be continuously detected, linkage control with a PLC and an upper computer can be realized by arranging a plug, the hysteresis quality between offline monitoring data is reduced, and the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of concentration meter technology, and in particular to an online concentration meter. Background Technology

[0002] An online concentration meter is an industrial instrument used to detect the concentration of solutes (such as sugar content, salinity, acid and alkali concentration) in liquids in real time. It can be directly installed in production equipment such as pipelines and reaction vessels to achieve continuous and automated concentration measurement and control.

[0003] A search of Chinese patent publication number "CN219574058U" reveals "a high-precision online concentration meter." This device uses a lifting mechanism to move the top cover up and down, allowing direct addition of solution to the container. The top cover is then moved down to close the container, enabling the online concentration meter to measure the solution concentration. The aluminum foil on the top cover and container surface effectively isolates static electricity and electromagnetic interference, resulting in higher measurement accuracy. After measurement, the top cover is moved up, allowing the container to be held by the handle and the solution poured into the appropriate location – a very convenient and efficient method. This design effectively isolates static electricity and electromagnetic interference, provides high precision, and facilitates easy access to and from the solution without requiring additional components, significantly reducing manufacturing costs.

[0004] Based on the above search and existing technology, it was found that the above patent has certain defects. The concentration measurement method of this concentration meter is contact measurement. Therefore, when using it, it is necessary to make relatively precise adjustments according to the concentration of the measured solution and the actual situation. As a result, it is not convenient to use and needs to be improved. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides an online concentration meter, which solves the technical problem of insufficient convenience of existing concentration meters.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An online concentration meter includes an online concentration meter body, wherein a plug is provided on the circumferential surface of the online concentration meter body, and the plug has a total of eight interfaces;

[0010] The online concentration meter body has a reflective structure on its circumferential surface;

[0011] The reflective structure includes a prism made of sapphire and located below the plug. The reflective structure also includes an LED light source, an optical fiber, and a CCD array. The light emitted by the LED light source will enter the interior of the prism along one side of the optical fiber and be reflected onto the contact surface between the online concentration meter body and the liquid material, and then adaptively reflected to the other side of the prism.

[0012] Preferably, the upper end of the online concentration meter body is provided with a first display area, which is a refractive index and temperature display area, and the upper end of the online concentration meter body is provided with a second display area, which is a concentration value display area.

[0013] Preferably, the upper end of the online concentration meter body is provided with a first display lamp, which is a refractive index nD display lamp, and the upper end of the online concentration meter body is provided with a second display lamp, which is a temperature T display lamp. The first display area, the second display area, the first display lamp, and the second display lamp can display the reflection data of the reflective structure.

[0014] (III) Beneficial Effects

[0015] Firstly, by setting up a reflective structure, in soluble liquids, the instrument first changes the refractive index due to the change in the refraction angle. The refractive index and concentration follow a temperature relationship: as the refractive index increases, the concentration increases; when the concentration does not change, the refractive index decreases with increasing temperature. Therefore, the refractive index can directly reflect the concentration change. Temperature fluctuations affect both the refractive index and the concentration, thus enabling continuous detection of sample concentration. At the same time, it does not affect unnecessary adjustments to the online concentration meter itself, improving convenience. Furthermore, by setting up a plug, it can achieve linkage control with PLC and host computer, reducing the lag between offline monitoring data and improving practicality.

[0016] Secondly, by setting up a first display area and a second display area, the refractive index, temperature, and concentration values ​​of the reflective structure can be displayed, making it easier for staff to understand the situation intuitively and improving convenience. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the online concentration meter body of this utility model;

[0020] Figure 3This is a three-dimensional structural diagram of the prism of this utility model;

[0021] Figure 4 This is a plan view of the plug interface of this utility model;

[0022] Figure 5 This is a schematic diagram illustrating the refraction principle of the reflective structure of this utility model.

[0023] Legend: 11. Online concentration meter body; 12. Plug; 13. Prism; 14. First display area; 15. Second display area; 16. First indicator light; 17. Second indicator light. Detailed Implementation

[0024] This application provides an online concentration meter that effectively solves the technical problem of insufficient convenience in existing concentration meters. By setting up a reflective structure, in soluble liquids, the instrument first changes the refractive index due to the change in the refraction angle. The refractive index and concentration follow a temperature relationship: as the refractive index increases, the concentration increases; when the concentration does not change, the refractive index decreases with increasing temperature. Therefore, the refractive index can directly reflect the concentration change. Temperature fluctuations affect both the refractive index and concentration, thus enabling continuous detection of sample concentration. At the same time, it does not affect unnecessary adjustments to the online concentration meter body, improving convenience. Furthermore, by setting up a plug, it can achieve linkage control with a PLC and host computer, reducing the lag between offline monitoring data and improving practicality. By setting up a first display area and a second display area, the refractive index, temperature, and concentration values ​​of the reflective structure can be displayed, allowing staff to intuitively understand the situation and improving convenience.

[0025] Example

[0026] like Figure 1 - Figure 5 As shown, the technical solution in this application embodiment effectively solves the technical problem of insufficient convenience of existing concentration meters. The overall idea is as follows:

[0027] To address the problems existing in the prior art, this utility model provides an online concentration meter, including an online concentration meter body 11, and a plug 12 with eight interfaces on the circumferential surface of the online concentration meter body 11.

[0028] The online concentration meter body 11 has a reflective structure on its circumferential surface;

[0029] The reflective structure includes a prism 13, which is made of sapphire. The prism 13 is located below the plug 12. The reflective structure also includes an LED light source, an optical fiber, and a CCD array. The light emitted by the LED light source will enter the interior of the prism 13 along one side of the optical fiber and be reflected to the contact surface between the online concentration meter body 11 and the liquid material, and adaptively reflected to the other side of the prism 13.

[0030] The eight interfaces of plug 12 are as follows: 1. White; 2. Brown; 3. Green; 4. Yellow; 5. Gray; 6. Pink; 7. Blue; 8. Red. Power supply DC24: Brown+, Blue-; Concentration analog quantity: Red+, White-; Temperature analog quantity: Yellow+, Green-; Modbus485: Pink A+, Gray B-.

[0031] Light emitted from the LED light source enters the sapphire prism 13 from one side through the optical fiber and reaches the contact surface between the prism 13 and the liquid material. Due to the different refractive indices of the liquid at the contact surface, part of the light is totally reflected to the other side of the prism 13. The position of the totally reflected light changes due to the change of the critical angle (the critical angle varies depending on the refractive index of the liquid). The CCD array is used to accurately detect the position of the totally reflected light, and each position corresponds to a different refractive index.

[0032] By setting up a reflective structure, the instrument first changes the refractive index in soluble liquids due to the change in the refraction angle. The refractive index and concentration follow a temperature relationship: as the refractive index increases, the concentration increases; when the concentration does not change, the refractive index decreases with increasing temperature. Therefore, the refractive index can directly reflect the concentration change. Temperature fluctuations affect both the refractive index and the concentration, thus enabling continuous detection of sample concentration. Furthermore, by setting plug 12, it can achieve linkage control with PLC and host computer, reducing the lag between offline monitoring data and improving practicality.

[0033] The upper end of the online concentration meter body 11 is provided with a first display area 14, which is a refractive index and temperature display area, and the upper end of the online concentration meter body 11 is provided with a second display area 15, which is a concentration value display area.

[0034] The upper end of the online concentration meter body 11 is provided with a first indicator light 16, which is a refractive index nD indicator light, and the upper end of the online concentration meter body 11 is provided with a second indicator light 17, which is a temperature T indicator light.

[0035] The first display area 14, the second display area 15, the first display lamp 16, and the second display lamp 17 can display the reflection data of the reflective structure;

[0036] By setting up the first display area 14 and the second display area 15, the refractive index, temperature and concentration values ​​of the reflective structure can be displayed, making it easier for staff to understand the situation intuitively and improving convenience.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An in-line concentration meter comprising an in-line concentration meter body (11), characterized in that, The online concentration meter body (11) is provided with eight interfaces on the circumferential surface of the plug (12); The online concentration meter body (11) is provided with a reflection structure on the circumferential surface; The reflection structure includes a prism (13) made of sapphire, which is located below the plug (12); The reflection structure further includes an LED light source, an optical fiber, and a CCD array. The light emitted by the LED light source enters the prism (13) from one side of the optical fiber and is reflected to the contact surface of the liquid material below the online concentration meter body (11) and then to the other side of the prism (13).

2. An in-line concentration meter as claimed in claim 1, characterized in that The online concentration meter body (11) is provided with a first display area (14) at the upper end; The first display area (14) is a refractive index and temperature display area.

3. An in-line concentration meter as claimed in claim 2, characterised in that, The online concentration meter body (11) is provided with a second display area (15) at the upper end; The second display area (15) is a concentration value display area.

4. An in-line concentration meter as claimed in claim 3, characterised in that, The online concentration meter body (11) is provided with a first display lamp (16) at the upper end; The first display lamp (16) is a refractive index nD display lamp.

5. An in-line concentration meter as claimed in claim 4, characterised in that, The online concentration meter body (11) is provided with a second display lamp (17) at the upper end; The second display lamp (17) is a temperature T display lamp.

6. An in-line concentration meter as claimed in claim 5, characterised in that, The first display area (14), the second display area (15), the first display lamp (16), and the second display lamp (17) can display the reflection data of the reflection structure.

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