Coulomb method trace moisture meter electrolytic tank with light shield device

Abstract

The utility model relates to the technical field of coulometry trace moisture meter electrolytic tanks, and discloses a coulometry trace moisture meter electrolytic tank with a light shield device, which comprises a light shield body, an observation component is arranged at the top of the light shield body, a sample injection component is arranged on one side of the light shield body, and a sample discharge component is arranged on the other side of the light shield body. And an electrolytic tank assembly is arranged in the light shield body. The coulometry trace moisture meter electrolytic tank with the light shield device and the coulometry trace moisture meter are simple in structure and convenient to disassemble, have the functions of shielding light, dehumidifying, preserving heat and preventing corrosive gas from corroding the electrodes, and compared with a traditional trace moisture meter, the coulometry trace moisture meter electrolytic tank and the coulometry trace moisture meter have the advantages that the requirement for the instrument installation environment can be lowered, and the cost is lowered. According to the coulometry trace moisture meter electrolytic tank, the electrolyte state can be kept in a balanced state, the purpose of rapidly measuring a sample is achieved, the coulometry trace moisture meter electrolytic tank can ensure that the meter can prolong the service time of electrolysis, and the pollution of a Karl Fischer reagent to the environment is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of electrolytic cells for coulometric trace moisture analyzers, specifically to an electrolytic cell for coulometric trace moisture analyzers with a light-shielding device. Background Technology

[0002] Currently, Karl Fischer coulometric micromoisture analyzers are widely used in various industries such as petroleum, chemical, power, pharmaceutical, and agriculture. They are particularly useful for determining trace amounts of moisture in liquids, solids, and gases, such as ppm-level moisture content, and offer advantages such as high sensitivity, high selectivity, and ease of operation.

[0003] The Karl Fischer coulometric method is an electrochemical method based on the reaction between iodine, sulfur dioxide, water, and an organic base (such as pyridine). In an electrolytic cell, when Karl Fischer's reagent (mainly composed of iodine, sulfur dioxide, an organic base, and a solvent (such as methanol)) reaches equilibrium, a water-containing sample is injected. Water participates in the reaction of iodine and sulfur dioxide, producing pyridine hydroiodate and pyridine methylsulfate in the presence of pyridine and methanol. The consumed iodine is generated at the anode through electrolysis, thus sustaining the redox reaction until all the water is depleted. According to Faraday's law of electrolysis, the amount of iodine produced by electrolysis is proportional to the amount of electricity consumed, therefore, the water content can be determined.

[0004] Traditional coulometric micromoisture analyzers have two drawbacks in practical applications:

[0005] (1) The Karl Fischer coulometric micro-moisture analyzer has certain requirements for the temperature and humidity of the environment in which the instrument is placed. In practical applications, when the humidity in the air is high during the rainy season, the pool wall is prone to adsorbing moisture, and there is moisture at the connection between the pool wall and the electrode, which will lead to difficulties in electrolyte balance, and the instrument status value will be too high, failing to meet the measurement requirements; while when the air is dry in winter, the instrument status will show an abnormal state of negative value.

[0006] (2) Karl Fischer reagent is a toxic reagent. The waste liquid of Karl Fischer reagent after use is a harmful waste liquid that needs to be treated, causing environmental pollution. Karl Fischer reagent needs to be stored in a cool place in a sealed container. It will decompose or deteriorate under light conditions. The traditional electrolytic cell structure is easily affected by light, temperature and humidity conditions, which will reduce the service life of Karl Fischer reagent. Utility Model Content

[0007] The purpose of this invention is to provide an electrolytic cell for a coulometric trace moisture analyzer with a light-shielding device, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an electrolytic cell for a coulometric micro-moisture analyzer with a light-shielding device, comprising a light-shielding body, an observation component at the top of the light-shielding body, a sample injection component on one side of the light-shielding body, an electrolytic cell assembly inside the light-shielding body, the electrolytic cell assembly including a limiting bracket, the two ends of the limiting bracket being connected to the inner wall of the light-shielding body, the electrolytic cell body inside the limiting bracket, auxiliary handles symmetrically arranged on both sides of the top of the electrolytic cell body, a movable bracket rotatably arranged on the top of the auxiliary handles, a drying tube arranged inside the movable bracket, the drying tube being arranged inside the electrolytic cell body, and desiccant fixing boxes arranged on the inner walls of the four corners of the bottom of the light-shielding body.

[0009] As a preferred embodiment of the present invention, the observation component includes a movable slide, an observation port is provided at the bottom of the movable slide, a protective sliding plate adapted to it is slidably disposed on the inner wall of the movable slide, and an observation window is provided on the inner wall of the protective sliding plate.

[0010] As a preferred embodiment of the present invention, the sample injection assembly includes a sample injection port, a magnetic sealing plate is provided outside the sample injection port, and round iron blocks are provided around the sample injection port. The magnetic sealing plate is connected and fixed to the light shield body by the round iron blocks.

[0011] As a preferred embodiment of this utility model, a suction cup base is provided at the bottom of the light shield body, and movable locking holes are evenly arranged on the suction cup base. A squeezing button is provided on the inner wall of the movable locking hole, and a suction cup body is provided at the bottom of the squeezing button.

[0012] As a preferred technical solution of this utility model, the inner walls of the two sides of the movable slide are symmetrically provided with limiting slide grooves, the outer wall of the screw groove of the protective slide plate is symmetrically provided with limiting sliders that are adapted to the limiting slide grooves, and the top four corners of the protective slide plate are provided with auxiliary push blocks.

[0013] As a preferred technical solution of this utility model, a fixed back plate is provided above the magnetic sealing sheet, the fixed back plate is connected to the light shield body, the fixed back plate and the magnetic sealing sheet are connected and fixed by a movable soft strap, and a pull-out plate is provided on one side of the magnetic sealing sheet.

[0014] As a preferred embodiment of this invention, the inner wall of the light shield body is coated with a nano heat insulation film.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The electrolytic cell of the coulometric trace moisture analyzer with light shield device has a simple structure and is easy to disassemble. It has the functions of light shielding, dehumidification, heat preservation and preventing corrosion of the electrodes by corrosive gases. Compared with traditional trace moisture analyzers, it can relax the requirements of the instrument installation environment.

[0017] 2. The electrolytic cell of this coulometric micro-moisture analyzer with a light shield can maintain the electrolyte in a balanced state, achieving the purpose of rapid sample determination. The electrolytic cell of the coulometric micro-moisture analyzer can ensure that the instrument can extend the electrolysis time and reduce the environmental pollution of Karl Fischer reagent. Attached Figure Description

[0018] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the bottom side view structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the present invention;

[0022] Figure 4 This is a partial cross-sectional view of the present invention.

[0023] In the diagram: 1. Light shield body; 2. Observation component; 201. Moving slide; 202. Observation port; 203. Protective sliding plate; 204. Observation window; 205. Limiting slide; 206. Limiting slider; 207. Auxiliary push block; 3. Sample injection component; 301. Sample injection port; 302. Magnetic sealing plate; 303. Round iron block; 304. Fixed back plate; 305. Movable soft strap; 306. Pull-out plate; 4. Electrolytic cell component; 401. Limiting bracket; 402. Electrolytic cell body; 403. Auxiliary handle; 404. Movable bracket; 405. Drying tube; 406. Desiccant fixing box; 5. Suction cup base; 6. Movable locking hole; 7. Squeeze button; 8. Suction cup body; 9. Nano heat insulation film. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a technical solution: an electrolytic cell for a coulometric trace moisture analyzer with a light shield, comprising a light shield body 1, an observation component 2 disposed on the top of the light shield body 1, a sample injection component 3 disposed on one side of the light shield body 1, and an electrolytic cell assembly 4 disposed inside the light shield body 1. The electrolytic cell assembly 4 includes a limiting bracket 401, the two ends of which are connected to the inner wall of the light shield body 1, and the electrolytic cell body 402 disposed inside the limiting bracket 401. Auxiliary handles 403 are symmetrically arranged on both sides of the top of the body 402. A movable support 404 is rotatably mounted on the top of the auxiliary handles 403. A drying tube 405 is installed inside the movable support 404. The drying tube 405 is located inside the electrolytic cell body 402. Desiccant fixing boxes 406 are installed on the inner walls of the four corners of the bottom of the light shield body 1. A suction cup base 5 is installed at the bottom of the light shield body 1. Movable locking holes 6 are evenly arranged on the suction cup base 5. A squeeze button 7 is installed on the inner wall of the movable locking holes 6. The bottom is equipped with a suction cup body 8, and the inner wall of the light shield body 1 is coated with a nano heat insulation film 9. By coating the inner wall of the light shield body 1 with the nano heat insulation film 9, the influence of light on the Karl Fischer reagent is reduced, protecting the stability of the reagent. The light shield body 1 reduces the external heat transfer of the electrolytic cell body 402 to a certain extent, which helps to maintain a constant temperature inside the electrolytic cell body 402, maintain the activity of the reagent and the accuracy of the measurement results. The button drives the suction cup body 8 to press down to fix the suction cup base 5, which is convenient for disassembly and installation. The limiting bracket 401 can temporarily limit the electrolytic cell body 402 to ensure that the subsequent reagent injection does not deviate from the position. The movable bracket 404 can be rotated and adjusted to provide support for the drying tube 405. When the external humidity is high, the desiccant is placed in the desiccant fixing box 406 to reduce the humidity inside the light shield body 1, prevent the reagent from deteriorating due to moisture, and prevent the state from failing to meet the measurement requirements due to water adsorption on the cell wall of the electrolytic cell body 402 or moisture at the connection between the cell wall and the electrode.

[0026] The observation component 2 includes a movable slide 201, an observation port 202 at the bottom of the movable slide 201, a protective slide plate 203 adapted to the inner wall of the movable slide 201, an observation window 204 on the inner wall of the protective slide plate 203, symmetrical limit slides 205 on both sides of the inner wall of the movable slide 201, and symmetrical limit sliders 206 adapted to the limit slides 205 on the outer wall of the screw groove of the protective slide plate 203. Auxiliary push blocks 207 are provided at the four corners of the top of the protective slide plate 203. The observation port 202 is used to observe the internal condition of the electrolytic cell body 402. When changing the electrolyte or cleaning the internal components of the electrolytic cell body 402, the protective slide plate 203 is opened by the auxiliary push blocks 207 to remove the electrolytic cell body 402. The limit sliders 206 cooperate with the limit slides 205 to facilitate the movable and fixed protective slide plate 203 inside the movable slide 201.

[0027] The sample injection assembly 3 includes a sample injection port 301, a magnetic sealing plate 302 is provided on the outside of the sample injection port 301, and round iron blocks 303 are provided around the sample injection port 301. The magnetic sealing plate 302 is connected and fixed to the light shield body 1 by the round iron blocks 303. A fixed back plate 304 is provided above the magnetic sealing plate 302 and is connected to the light shield body 1. The fixed back plate 304 and the magnetic sealing plate 302 are connected and fixed by a movable soft strap 305. A pull plate 306 is provided on one side of the magnetic sealing plate 302. The sample injection port 301 is used to inject samples. The magnetic sealing plate 302 is fixed to the light shield body 1 by the movable soft strap 305, which facilitates the opening and closing of the magnetic sealing plate 302 by the pull plate 306. The round iron blocks 303 facilitate the adsorption of the magnetic sealing plate 302 and facilitate the sealing of the sample injection port 301.

[0028] Working principle: First, a nano-insulating film 9 is coated on the inner wall of the light shield body 1 to reduce the influence of light on the Karl Fischer reagent and protect its stability. The light shield body 1 also reduces the amount of heat entering the electrolytic cell body 402 from the outside, helping to maintain a constant temperature inside the electrolytic cell body 402, thus maintaining the activity of the reagent and the accuracy of the measurement results. The button drives the suction cup body 8 to press downwards, which facilitates the fixation of the suction cup base 5. Disassembly and installation are convenient. The limiting bracket 401 facilitates temporary positioning of the electrolytic cell body 402, ensuring that subsequent reagent injection does not deviate from the position. The movable bracket 404 facilitates rotation and adjustment, providing support for the drying tube 405. When the external humidity is high, desiccant is placed in the desiccant fixing box 406 to reduce the humidity inside the light shield body 1 and prevent the reagent from being damaged by light. To prevent moisture and deterioration, and to prevent water adsorption on the walls of the electrolytic cell body 402 or moisture at the connection between the cell wall and the electrode from causing the condition to fail to meet the measurement requirements, the observation port 202 is used to observe the internal condition of the electrolytic cell body 402. When changing the electrolyte or cleaning the internal components of the electrolytic cell body 402, the protective sliding plate 203 is opened by the auxiliary push block 207 to remove the electrolytic cell body 402. The limiting slider 206 cooperates with the limiting slide groove 205 to facilitate the movable fixing of the protective sliding plate 203 inside the movable slide groove 201. The sample injection port 301 is used to inject samples. The magnetic sealing plate 302 is fixed to the light shield body 1 by the movable soft band 305, which facilitates the opening and closing of the magnetic sealing plate 302 by the pull plate 306. The round iron block 303 facilitates the adsorption of the magnetic sealing plate 302, which facilitates the sealing of the sample injection port 301.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. An electrolytic cell for a coulometric trace moisture analyzer with a light-shielding device, characterized in that: The device includes a light shield body (1), an observation component (2) on the top of the light shield body (1), a sample injection component (3) on one side of the light shield body (1), an electrolytic cell component (4) inside the light shield body (1), the electrolytic cell component (4) including a limiting bracket (401), the two ends of the limiting bracket (401) being connected to the inner wall of the light shield body (1), an electrolytic cell body (402) inside the limiting bracket (401), auxiliary handles (403) symmetrically arranged on both sides of the top of the electrolytic cell body (402), a movable bracket (404) rotatably arranged on the top of the auxiliary handles (403), a drying tube (405) arranged inside the movable bracket (404), the drying tube (405) being arranged inside the electrolytic cell body (402), and a desiccant fixing box (406) arranged on the inner wall of the four corners of the bottom of the light shield body (1).

2. The electrolytic cell of a coulometric trace moisture analyzer with a light-shielding device according to claim 1, characterized in that: The observation component (2) includes a movable slide (201), the bottom of which is provided with an observation port (202), and a protective slide (203) adapted to it is slidably provided on the inner wall of the movable slide (201), and an observation window (204) is provided on the inner wall of the protective slide (203).

3. The electrolytic cell of a coulometric trace moisture analyzer with a light-shielding device according to claim 1, characterized in that: The sample injection assembly (3) includes a sample injection port (301), a magnetic sealing plate (302) is provided on the outside of the sample injection port (301), and round iron blocks (303) are provided around the sample injection port (301). The magnetic sealing plate (302) is connected and fixed to the light shield body (1) by setting the round iron blocks (303).

4. The electrolytic cell of a coulometric trace moisture analyzer with a light-shielding device according to claim 1, characterized in that: The bottom of the light shield body (1) is provided with a suction cup base (5), and the suction cup base (5) is provided with movable locking holes (6) evenly arranged. The inner wall of the movable locking holes (6) is provided with a squeeze button (7), and the bottom of the squeeze button (7) is provided with a suction cup body (8).

5. The electrolytic cell of a coulometric trace moisture analyzer with a light-shielding device according to claim 2, characterized in that: The inner walls of the movable slide (201) are symmetrically provided with limiting slides (205), and the outer wall of the screw groove of the protective slide (203) is symmetrically provided with limiting sliders (206) that are adapted to the limiting slides (205). The four corners of the top of the protective slide (203) are provided with auxiliary push blocks (207).

6. The electrolytic cell of a coulometric trace moisture analyzer with a light-shielding device according to claim 3, characterized in that: A fixed back plate (304) is provided above the magnetic sealing sheet (302). The fixed back plate (304) is connected to the light shield body (1). The fixed back plate (304) and the magnetic sealing sheet (302) are connected and fixed by a movable soft strap (305). A pull plate (306) is provided on one side of the magnetic sealing sheet (302).

7. The electrolytic cell of a coulometric trace moisture analyzer with a light-shielding device according to claim 1, characterized in that: The inner wall of the light shield body (1) is coated with a nano heat insulation film (9).

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