CN219285089U - Reference electrode system of solid-liquid layering pH sensor - Google Patents
Reference electrode system of solid-liquid layering pH sensor Download PDFInfo
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- CN219285089U CN219285089U CN202222910723.8U CN202222910723U CN219285089U CN 219285089 U CN219285089 U CN 219285089U CN 202222910723 U CN202222910723 U CN 202222910723U CN 219285089 U CN219285089 U CN 219285089U
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Abstract
The utility model discloses a reference electrode system of a solid-liquid layered pH sensor, which comprises: the solid gel comprises a shell, an outer reference element, a solid gel and an outer reference gel; an outer reference gel and a solid gel are sequentially arranged in the shell, and the solid gel is positioned at the bottom of the outer reference gel; an external reference element is arranged in the shell, and the external reference element is inserted into the external reference gel; the exudation interface is arranged at one end of the shell, and the exudation interface is arranged at one end close to the solid gel, so that the reverse osmosis rate of pollutants can be effectively reduced, the medium exchange rate is slowed down by the first layer in a layered gel mode, the response speed of the electrode is ensured by the second layer, and the stability and the accuracy of the measured value of a product are improved while the service life of the sensor is prolonged.
Description
Technical Field
The utility model belongs to the field of pH sensors, and particularly relates to a reference electrode system of a solid-liquid layered pH sensor.
Background
The pH sensor is a high intelligent on-line continuous monitor, and consists of a sensor and a secondary meter. Can be matched with three or two composite electrodes to meet various use places. The pH meter is matched with pure water and ultrapure water electrodes, and can be suitable for pH measurement of water quality (such as chemical makeup water, saturated steam, condensed water and the like) with conductivity less than 3 mu s/cm.
According to the internal requirements of the industry and the service life requirements of the pH/ORP sensor reference system, a solid isolation layer is added at the front part of the gel system, the reaction speed is ensured to be measured, and the time period that an external medium reversely permeates into the Ag/AgCl reference system is prolonged, so that the reference system is ensured to provide a stable reference potential of a measuring loop for a long time. The structure is composed of two modules, namely solid electrolyte and liquid electrolyte.
Because in this product test environment, there are a lot of pollutant enrichment and reverse osmosis to the sensor inside. When the concentration of the pollutants reaches a certain degree, the Ag/AgCl system is damaged, and the accuracy of the measured value is affected; the existing sensor structure cannot effectively prolong the reverse osmosis period of pollutants, cannot guarantee the measurement reaction speed, influences the service life of electrodes in high-pollution environments, and has poor quality.
Disclosure of Invention
The utility model aims to provide a reference electrode system of a solid-liquid layered pH sensor, which aims to solve the technical problems in the background art.
In order to achieve the above object, the present utility model discloses a reference electrode system of a solid-liquid layered pH sensor, comprising: the solid gel comprises a shell, an outer reference element, a solid gel and an outer reference gel;
an external reference gel and a solid gel are sequentially arranged in the shell, and the solid gel is positioned at the bottom of the external reference gel;
an external reference element is arranged in the shell, and the external reference element is inserted into the external reference gel;
the exudation interface is disposed at one end of the housing and the exudation interface is disposed at an end proximate the solid gel.
As a preferred embodiment, the external reference element is Ag/AgCl.
As a preferred solution, one end of the external reference element is connected with an electric wire, and the electric wire is connected to the transducer.
As a preferable scheme, the exudation interface is a microporous structure made of ceramic or teflon.
As a preferred embodiment, the housing is a glass tube.
As a preferred scheme, the shell is of a cylindrical hollow structure.
As a preferable scheme, one end of the shell is connected with a connector in a matched mode, and threads are arranged on the outer side of the connector.
As a preferable scheme, the shell is fixedly connected with the connector through a connecting block.
Compared with the prior art, the utility model has the following advantages:
the method can effectively reduce the reverse osmosis rate of pollutants, and the first layer slows down the medium exchange rate and the second layer ensures the response speed of the electrode in a layered gel mode. Furthermore, the stability and the accuracy of the measured value of the product are improved while the service life of the sensor is prolonged, in addition, the fluidity is reduced by a solid-liquid layered combination structure mode, so that the exchange of polluted media is reduced, the service life of the pH/ORP sensor is prolonged, and the effect is good for high-pressure high-flow-rate application scenes.
Drawings
Fig. 1 is a schematic diagram of a reference electrode system of a solid-liquid layered pH sensor according to an embodiment of the present utility model.
FIG. 2 is a schematic distribution diagram of a solid gel and an external reference gel according to an embodiment of the present utility model.
Wherein, 1, joint, 2, connecting block, 3, casing, 4, solid gel, 5, exudation interface, 6, external reference gel, 7, external reference element, 8, electric wire.
Detailed Description
The technical scheme of the utility model is explained in detail by specific examples.
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the utility model, fall within the scope of protection of the utility model.
A reference electrode system of a solid-liquid layered pH sensor according to an embodiment of the present utility model is described in detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1-2, a reference electrode system of a solid-liquid layered pH sensor according to an embodiment of the utility model includes: a shell 3, an outer reference element 7, a solid gel 4 and an outer reference gel 6;
an outer reference gel 6 and a solid gel 4 are sequentially arranged in the shell 3, and the solid gel is positioned at the bottom of the outer reference gel 6;
an outer reference element 7 is arranged in the shell 3, and the outer reference element 7 is inserted into the outer reference gel 6;
a exuding interface 5 is provided at one end of the housing 3, and the exuding interface 5 is provided at an end close to the solid gel 4.
Specifically, the reference electrode comprises a exudation interface 5 (microporous structure of ceramics, teflon and other materials), an external reference element 7 (Ag/AgCl), an external reference gel 6 and a shell 3. The electric potential sensed by the external reference element 7 is transmitted to the instrument through a lead, the connecting block 2 comprises a first cylinder and a second cylinder, the first cylinder and the second cylinder are coaxially arranged, the radius of the section of the first cylinder is larger than that of the section of the second cylinder, the joint 1 is connected at one end part of the first cylinder, the shell 3 is connected at the end part of the second cylinder,
furthermore, by means of solid-liquid combination, the exchange rate of the medium is slowed down, the service life of the sensor is prolonged, the measuring medium has strong fluidity and contains ions and organic matters with high concentration, destructive substances can permeate out of the interface 5 through the sensor to exchange with the reference solution, and although gel in the sensor is in a static state, the diffusion speed is still fast, so that the electrode can be damaged within a certain period range. Therefore, the solid permeation layer without fluxion is added before the gel, the reaction speed of the reference system in the gel can be ensured, the diffusion of the concentration of the medium is buffered, the solid permeation layer is similar to a waterproof breathable layer, and the rapid medium exchange caused by the gel flow can be blocked.
Furthermore, the method can effectively reduce the reverse osmosis rate of pollutants, and the first layer slows down the medium exchange rate and the second layer ensures the response speed of the electrode in a layered gel mode. Furthermore, the stability and the accuracy of the measured value of the product are improved while the service life of the sensor is prolonged, in addition, the fluidity is reduced by a solid-liquid layered combination structure mode, so that the exchange of polluted media is reduced, the service life of the pH/ORP sensor is prolonged, and the effect is good for high-pressure high-flow-rate application scenes.
As a preferred embodiment, the external reference element 7 is Ag/AgCl.
As a preferred solution, the external reference element 7 is connected at one end to a wire 8, the wire 8 being connected to the transducer.
Preferably, the exudation interface 5 is a microporous structure made of ceramic or teflon.
As a preferred embodiment, the housing 3 is a glass tube.
As a preferred solution, the housing 3 is a cylindrical hollow structure.
As a preferable scheme, one end of the shell 3 is connected with a joint 1 in a matching way, and threads are arranged on the outer side of the joint 1.
As a preferred solution, the housing 3 is fixedly connected to the joint 1 by means of a connecting block 2.
In conclusion, through the structure mode of solid-liquid layered combination, the fluidity is reduced, and then the exchange of the polluted medium is reduced, the service life of the pH/ORP sensor is prolonged, the effect is better for high-pressure high-flow-rate application scenes, the flow of the polluted medium can be effectively blocked through the arrangement of the solid gel 4, the reverse osmosis period of pollutants is prolonged, the problem of the service life of an electrode in high pollution can be solved to a certain extent, the stability and the accuracy of the measured value of a product are increased, and the quality of the product is improved.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.
Claims (8)
1. A reference electrode system for a solid-liquid layered pH sensor, comprising: the solid gel comprises a shell, an outer reference element, a solid gel and an outer reference gel; it is characterized in that the method comprises the steps of,
an external reference gel and a solid gel are sequentially arranged in the shell, and the solid gel is positioned at the bottom of the external reference gel;
an external reference element is arranged in the shell, and the external reference element is inserted into the external reference gel;
the shell is provided with a exudation interface at one end, and the exudation interface is arranged at one end close to the solid gel.
2. The reference electrode system of claim 1, wherein the external reference element is Ag/AgCl.
3. The reference electrode system of claim 1, wherein the external reference element has a wire connected to one end, the wire being connected to the transducer.
4. The reference electrode system of claim 1, wherein the exudation interface is a microporous structure of ceramic or teflon.
5. The reference electrode system of claim 1, wherein the housing is a glass tube.
6. The reference electrode system of claim 5, wherein the housing is a cylindrical hollow structure.
7. The reference electrode system of a solid-liquid layered pH sensor according to claim 1, wherein one end of the housing is cooperatively connected with a connector, and threads are provided on the outside of the connector.
8. The reference electrode system of claim 7, wherein the housing is fixedly connected to the connector via a connecting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222910723.8U CN219285089U (en) | 2022-11-02 | 2022-11-02 | Reference electrode system of solid-liquid layering pH sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222910723.8U CN219285089U (en) | 2022-11-02 | 2022-11-02 | Reference electrode system of solid-liquid layering pH sensor |
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| Publication Number | Publication Date |
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| CN219285089U true CN219285089U (en) | 2023-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222910723.8U Active CN219285089U (en) | 2022-11-02 | 2022-11-02 | Reference electrode system of solid-liquid layering pH sensor |
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| CN (1) | CN219285089U (en) |
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- 2022-11-02 CN CN202222910723.8U patent/CN219285089U/en active Active
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