CN215727865U - Electrochemical sensor with adjustable measuring range - Google Patents
Electrochemical sensor with adjustable measuring range Download PDFInfo
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- CN215727865U CN215727865U CN202121408765.0U CN202121408765U CN215727865U CN 215727865 U CN215727865 U CN 215727865U CN 202121408765 U CN202121408765 U CN 202121408765U CN 215727865 U CN215727865 U CN 215727865U
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Abstract
The application relates to an electrochemical sensor with adjustable measuring range, comprising: the detection device comprises a detection chamber, a first cover body, a second cover body, a third cover body, an electrolyte accommodating tank and at least one electrode; the first cover body is arranged on the detection chamber, a first detection hole is formed in the first cover body, and a first limiting groove is formed in the first cover body; the second cover body is arranged on the first limiting groove, and a second detection hole is formed in the second cover body; the third cover body is arranged on the second cover body, at least one through hole is formed in the third cover body, the sizes of the through holes are sequentially reduced, and the third cover body can rotate along the surface of the second cover body to enable the through hole and the second detection hole to be overlapped to form a detection channel; the electrolyte accommodating tank is arranged in the detection chamber; at least one electrode is disposed on the detection chamber for ionization. The adjustable electrochemical sensor of range of this application is through integrated different ranges in an organic whole, and the size difference that detects the through-hole that the range passes through on the third lid realizes, during the detection, begins toward low-range debugging from the high range, and is swift high-efficient, practices thrift the cost.
Description
Technical Field
The application relates to the technical field of sensors, in particular to an electrochemical sensor with an adjustable measuring range.
Background
An electrochemical sensor is a sensor that senses and detects a chemical quantity of an analyte by converting the chemical quantity into an electrical quantity based on the electrochemical properties of the analyte. The electrochemical sensor is mainly used for analyzing gas, liquid or solid components dissolved in the liquid, and measuring parameters of pH value, conductivity, oxidation-reduction potential and the like of the liquid.
The structure of the current electrochemical sensor is that an air inlet hole is arranged under a waterproof breathable film, and the gas sensors of the same type have different measuring ranges, such as 4CO-10ppm, 4CO-50ppm,4CO-100ppm and the like. The difference is that the diameters of the air inlet holes are different. For a measurement with a definite gas concentration, the customer needs to know the approximate range and then select the appropriate range and then select a specific model of sensor. When the gas concentration is unknown, a plurality of sensors are needed to be used for measuring, and the measuring ranges are sequentially from high to low, so that the relatively accurate gas concentration is obtained. It is necessary for users to configure sensors with different measuring ranges for field replacement, which results in reduced working efficiency.
SUMMERY OF THE UTILITY MODEL
The application aims to provide an electrochemical sensor with an adjustable measuring range, which can change the measuring range and improve the working efficiency of the sensor.
The embodiment of the application is realized as follows:
the application provides an adjustable electrochemical sensor of range, includes: the detection device comprises a detection chamber, a first cover body, a second cover body, a third cover body, an electrolyte accommodating tank and at least one electrode; the first cover body is arranged on the detection chamber, a first detection hole is formed in the first cover body, and a first limiting groove is formed in the first cover body; the second cover body is arranged on the first limiting groove, and a second detection hole is formed in the second cover body; the third cover body is arranged on the second cover body, at least one through hole is formed in the third cover body, the sizes of the through holes are sequentially reduced, and the third cover body can rotate along the surface of the second cover body to enable the through hole and the second detection hole to be overlapped to form a detection channel; the electrolyte accommodating tank is arranged in the detection chamber; at least one electrode is disposed on the detection chamber for ionization.
In one embodiment, the electrochemical sensor with adjustable measuring range further comprises: a first breathable film and a second breathable film; the first breathable film is arranged at the bottom of the second cover body; the first cover body is also provided with a second limiting groove; the second ventilated membrane is arranged on the surface of the second limiting groove.
In one embodiment, the electrochemical sensor with adjustable measuring range further comprises: filtering the medicinal powder, and arranging between the first and second gas-permeable films.
In one embodiment, the first and second breathable films are identical in shape and size.
In one embodiment, the edge of the third cover is bent inward along the edge of the first cover to form a bending surface, so that the edge of the third cover is annularly embedded on the edge of the first cover.
In one embodiment, the electrochemical sensor with adjustable measuring range further comprises: the gear teeth, the worm, the motor and the PLC; the gear teeth are arranged on the bending surface of the third cover body; the worm is meshed and connected with the gear teeth; the output shaft of the motor is connected with the worm; the PLC controller is connected with the motor.
In one embodiment, the second cover body is provided with a groove, and the second detection hole is arranged on the surface of the groove; and the groove is provided with a sealing ring for sealing the second detection hole and the through hole when the through hole and the second detection hole are overlapped to form a detection channel.
In one embodiment, a dust-proof film is disposed on the third cover.
In one embodiment, at least one concentration indicating mark is arranged on the surface of the first cover body; a window is arranged on the third cover body; the third cover body can rotate along the surface of the second cover body, so that the concentration indicating mark can be observed through the window.
In one embodiment, the shape of the through hole is one or a combination of a circle and a rectangle; the second detection hole is one of a circle or a rectangle; the first detection hole is one of circular or rectangular.
Compared with the prior art, the beneficial effect of this application is: the adjustable electrochemical sensor of range of this application is through integrated different ranges in an organic whole, and the size difference that detects the through-hole that the range passes through on the third lid realizes, and automatic control is adopted in the rotation of third lid, reducible manpower consumption. When gas content is detected, the electrochemical sensor with the adjustable measuring range is placed in a place corresponding to the position, the high-range and low-range debugging is started, the operation is fast and efficient, and the cost is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a cross-sectional view of an adjustable-range electrochemical sensor according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a tunable-range electrochemical sensor according to an embodiment of the present disclosure.
Fig. 3 is a partial schematic structural diagram of an electrochemical sensor with adjustable measuring range according to an embodiment of the present disclosure.
Fig. 4 is a schematic view of a portion of a tunable-range electrochemical sensor according to another embodiment of the present application.
Icon:
1-an electrochemical sensor with adjustable measuring range; 100-a detection chamber; 110-electrodes; 200-a first cover; 210-a first detection well; 220-a first limit groove; 230-a second limit groove; 240-concentration indicator; 300-a second cover; 310-a second detection well; 320-grooves; 330-sealing ring; 400-a third cover; 410-a through hole; 420-bending surface; 430-gear teeth; 440-a dust-proof film; 450-a window; 500-electrolyte holding tank; 600-a first breathable film; 610-a second breathable film; 620-filtering the powder; 700-worm; 800-motor; 900-PLC controller.
Detailed Description
The terms "first," "second," "third," and the like are used for descriptive purposes only and not for purposes of indicating or implying relative importance, and do not denote any order or order.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally arranged when products of the application are used, and are used only for convenience in describing the application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application.
In the description of the present application, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1, a cross-sectional view of a range-adjustable electrochemical sensor 1 according to an embodiment of the present application is shown. A range-adjustable electrochemical sensor 1, comprising: a detection chamber 100, a first cover 200, a second cover 300, a third cover 400, an electrolyte receiving tank 500, and at least one electrode 110. The detection chamber 100 is a cavity structure, and the electrolyte accommodating tank 500 is disposed in the detection chamber 100. An electrode 110 may be provided at the bottom of the detection chamber 100 for ionization. During the use, invert the adjustable electrochemical sensor of range 1, make electrolyte holding tank 500's notch upwards, to pouring the electrolyte in electrolyte holding tank 500, reuse and the lid that electrolyte holding tank 500 matches, it is sealed with electrolyte holding tank 500's notch, avoid electrolyte to reveal.
The first cover 200 is disposed on the testing chamber 100, and the first cover 200 is provided with a first testing hole 210, wherein the first testing hole 210 is one of a circular shape and a rectangular shape. The first cover 200 is further provided with a first limiting groove 220, the second cover 300 is disposed on the first limiting groove 220, the second cover 300 is provided with a second detecting hole 310, and the second detecting hole 310 is one of a circular shape and a rectangular shape.
In one embodiment, the first cover 200 may be made of stainless steel. The second cover 300 may be made of ABS plastic (the ABS plastic is a terpolymer of three monomers, namely acrylonitrile (a), butadiene (B) and styrene (S), and the relative contents of the three monomers may be changed at will to make various resins).
Fig. 2 is a schematic structural diagram of an electrochemical sensor 1 with adjustable measuring range according to an embodiment of the present disclosure. The third cover 400 is disposed on the second cover 300, at least one through hole 410 is disposed on the third cover 400, the size of the through hole 410 is sequentially reduced, the third cover 400 can rotate along the surface of the second cover 300, so that the through hole 410 and the second detection hole 310 are overlapped to form a detection channel (please refer to fig. 1), and the shape of the through hole 410 is one of circular or rectangular or a combination thereof.
When the size of the through hole 410 is greater than or equal to the size of the second sensing hole 310, the sensing range of the range-adjustable electrochemical sensor 1 is determined by the size of the second sensing hole 310.
When the size of the through hole 410 is smaller than the size of the second sensing hole 310, the sensing range of the range-adjustable electrochemical sensor 1 is determined by the size of the through hole 410.
Therefore, in the present embodiment, the measuring range of the electrochemical sensor with adjustable measuring range 1 can be adjusted by rotating the third cover 400, and the present embodiment integrates different measuring ranges on the same sensor by providing a plurality of through holes 410.
In one embodiment, the number of the through holes 410 may be 3, 4, 5, 6, etc.
In one embodiment, when the shape of the through hole 410 is circular, the shape of the second detection hole 310 is also circular, and correspondingly, the shape of the first detection hole 210 is circular. Wherein the diameter of the first sensing hole 210 is larger than that of the maximum-sized through hole 410.
Fig. 3 is a schematic structural diagram of a portion of the electrochemical sensor 1 with adjustable measuring range according to an embodiment of the present application. The range-adjustable electrochemical sensor 1 further comprises: a first breathable film 600 and a second breathable film 610, wherein the first breathable film 600 is arranged at the bottom of the second cover body 300; the first cover body 200 is provided with a second limit groove 230, and the second breathable film 610 is arranged on the surface of the second limit groove 230. The first breathable film 600 and the second breathable film 610 are identical in shape and size.
In one embodiment, the first gas permeable membrane 600 and the second gas permeable membrane 610 can be made of PTFE (polytetrafluoroethylene, abbreviated as PTFE), which is resistant to acid, alkali and various organic solvents. The first gas permeable membrane 600 and the second gas permeable membrane 610 can protect the span-adjustable electrochemical sensor 1 from contaminants, water, salts, and other corrosive liquids, and can quickly recover gas permeation after the span-adjustable electrochemical sensor 1 contacts the liquid, so as to ensure accurate measurement and stable performance of the span-adjustable electrochemical sensor 1.
In one embodiment, a filtering powder 620 is further disposed between the first gas permeable membrane 600 and the second gas permeable membrane 610. For example, when the gas to be detected is CO, the electrochemical sensor 1 with adjustable measurement range is inserted into the CO gas to be detected, and potassium permanganate is added between the first gas-permeable membrane 600 and the second gas-permeable membrane 610 to filter the medicinal powder 620, so as to remove H2S gas, nitrogen oxide, SO2Acid interference gas is waited, or an active carbon filter layer is added to remove volatile gas such as formaldehyde; when the gas to be detected is SO2At the same time, the electrochemical sensor 1 with adjustable measuring range is inserted into the sample to be detectedSO2In the gas, sulfide (such as H) is removed by adding silver sulfate between the first gas permeable membrane 600 and the second gas permeable membrane 6102S). Impurity gas can be filtered by adding the filtering powder 620, so that the influence of the impurity gas on the detection result is reduced, and the detection precision of the electrochemical sensor 1 with the adjustable measuring range is improved.
In an embodiment, the third cover 400 is a sheet metal part formed by sheet metal processing, and the edge of the third cover 400 is bent inward along the edge of the first cover 200 to form a bent surface 420, so that the edge of the third cover 400 is embedded on the edge of the first cover 200.
The second cover 300 is provided with a groove 320, and the second detection hole 310 is arranged on the groove surface 320; the groove 320 is provided with a sealing ring 330 for sealing the second detection hole 310 and the through hole 410 when the through hole 410 and the second detection hole 310 are overlapped to form a detection channel (see fig. 2). In an embodiment, the second cover 300 and the third cover 400 may be sealed by a sealing ring 330 made of a fluororubber material, so as to prevent gas from flowing into the electrochemical sensor 1 from a gap between the second cover 300 and the third cover 400 when the electrochemical sensor 1 detects the gas content.
Fig. 4 is a schematic structural diagram of a portion of an electrochemical sensor 1 with adjustable measuring range according to another embodiment of the present application. The range-adjustable electrochemical sensor 1 further comprises: gear teeth 430, worm 700, motor 800 and PLC controller 900. The gear teeth 430 are disposed on the bending surface 420 of the third cover 400 (see fig. 3), and the worm 700 is engaged with the gear teeth 430; the output shaft of the motor 800 is connected with the worm 700; the PLC controller 900 is connected to the motor 800.
In this embodiment, when the electrochemical sensor 1 with an adjustable measurement range is used to detect the gas content, the measurement is debugged from a high measurement range to a low measurement range. The motor 800 is controlled by the PLC controller 900, the output shaft of the motor 800 rotates to drive the worm 700 connected therewith to rotate, and further drives the gear teeth 430 meshed with the worm 700 to rotate, so that the third cover 400 rotates, and the through hole 410 with the maximum size on the third cover 400 rotates to coincide with the second detection hole 310 on the second cover 300, when a detection channel is formed, the PLC controller 900 controls the motor 800 to stop working, and at this time, the maximum range on the range-adjustable electrochemical sensor 1 can be used for gas content detection. When a small range needs to be replaced, the PLC controller 900 is used to control the motor 800 to work in the same manner as described above, and then the third cover 400 of the electrochemical sensor 1 with adjustable range is controlled to rotate by a designated angle according to the instruction, so that the small-sized through hole 410 rotates to coincide with the second detection hole 310 on the second cover 300 to form a detection channel, thereby achieving the detection requirements of different ranges.
The third cover 400 is provided with a dust-proof film 440. The span-tunable electrochemical sensor 1 is exposed to varying temperature and pressure environments, and temperature changes, dust, dirt, and moisture may have a significant effect on the electronic components of the span-tunable electrochemical sensor 1. The dust-proof film 440 can protect the span-adjustable electrochemical sensor 1 from contamination. In one embodiment, the dust-proof membrane 440 may be a PTFE gas permeable membrane with waterproof and gas permeable properties.
In an embodiment, at least one concentration indicating mark 240 is disposed on the surface of the first cover 200, a window 450 is disposed on the third cover 400, and the PLC controller 900 controls the motor 800 to operate, so as to drive the third cover 400 to rotate along the surface of the second cover 300, so that the concentration indicating mark 240 on the circumference of the surface of the first cover 200 is observed through the window 450. When the third cover 400 is rotated to a certain angle, the maximum concentration indicator 240 displayed on the first cover 200 is displayed through the window 450, for example, 100ppm, which represents that the span-indicating concentration of the span-adjustable electrochemical sensor 1 is 100 ppm. Corresponding concentration indicating marks 240, such as 10ppm, 50ppm, 100ppm, etc., can be provided on the first cover body 200 according to the actual detection requirements of the span-adjustable electrochemical sensor 1. And one concentration indicator 240 corresponds to one via 410 size, i.e., 10ppm corresponds to the smallest sized via 410, and so on.
In this application, before using the adjustable electrochemical sensor of range 1 to carry out gas content detection, at first, overturn the adjustable electrochemical sensor of range 1, make electrolyte holding tank 500's notch upwards, to pouring into the electrolyte in electrolyte holding tank 500, sealed with electrolyte holding tank 500's notch. A second air permeable membrane 610 is arranged on the second limit groove 230 of the first cover body 200, a filtering powder 620 is arranged on the second air permeable membrane 610, the second limit groove 230 is fully filled with the filtering powder 620, and a first air permeable membrane 600 is arranged on the surface of the filtering powder 620. The second cover body 300 is mounted on the first cover body 200, so that the bottom of the second cover body 300 is in contact with the surface of the first breathable film 600, and when the second cover body 300 is mounted, the relative position relationship between the concentration indication mark 240 on the periphery of the surface of the first cover body 200 and the position of the second detection hole 310 on the second cover body 300 is ensured through fool-proofing of a jig. The third cover 400 is formed by sheet metal working, and the edge of the third cover 400 is bent inward along the edge of the first cover 200 to form a bent surface 420, so that the edge of the third cover 400 is embedded on the edge of the first cover 200.
When the electrochemical sensor 1 with the adjustable measuring range is used for detecting the gas content, the electrochemical sensor can be debugged from a high measuring range to a low measuring range to find a proper measuring range. The PLC controller 900 controls the motor 800 to work, and further drives the third cover 400 to rotate along the surface of the second cover 300, so that the through hole 410 with the largest size and the second detection hole 310 coincide to form a detection channel. Meanwhile, the maximum concentration indicating mark 240 on the circumference of the surface of the first cap body 200 is observed through the window 450.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A tunable range electrochemical sensor, comprising:
a detection chamber;
the first cover body is arranged on the detection chamber, a first detection hole is formed in the first cover body, and a first limiting groove is formed in the first cover body;
the second cover body is arranged on the first limiting groove, and a second detection hole is formed in the second cover body;
the third cover body is arranged on the second cover body, at least one through hole is formed in the third cover body, the sizes of the through holes are sequentially reduced, and the third cover body can rotate along the surface of the second cover body, so that the through hole and the second detection hole are overlapped to form a detection channel;
the electrolyte accommodating tank is arranged in the detection chamber; and
at least one electrode, locate on said detection chamber, is used for ionizing.
2. The tunable range electrochemical sensor of claim 1, further comprising: a first breathable film and a second breathable film;
the first breathable film is arranged at the bottom of the second cover body;
the first cover body is also provided with a second limiting groove;
the second breathable film is arranged on the surface of the second limiting groove.
3. The tunable range electrochemical sensor of claim 2, further comprising:
and the filtering medicine powder is arranged between the first breathable film and the second breathable film.
4. The tunable range electrochemical sensor of claim 2, wherein the first and second gas permeable membranes are uniform in shape and size.
5. The tunable range electrochemical sensor of claim 1, wherein the edge of the third cover is folded inward along the edge of the first cover to form a folded surface, such that the third cover edge is annularly embedded on the first cover edge.
6. The tunable range electrochemical sensor of claim 5, further comprising:
the gear teeth are arranged on the bending surface of the third cover body;
the worm is meshed and connected with the gear teeth;
the output shaft of the motor is connected with the worm; and
and the PLC is connected with the motor.
7. The range-adjustable electrochemical sensor of claim 1, wherein the second cover has a groove, and the second sensing hole is formed in a surface of the groove;
and the groove is provided with a sealing ring for sealing the second detection hole and the through hole when the through hole and the second detection hole are overlapped to form a detection channel.
8. The tunable range electrochemical sensor of claim 1, wherein a dust barrier is disposed on the third cover.
9. The tunable-range electrochemical sensor of claim 1, wherein the first cover surface is provided with at least one concentration indicating mark;
a window is arranged on the third cover body;
the third cover body can rotate along the surface of the second cover body, so that the concentration indicating mark can be observed through the window.
10. The tunable range electrochemical sensor of claim 1 wherein the through-hole is one or a combination of circular or rectangular in shape;
the second detection hole is one of a circle or a rectangle;
the first detection hole is one of circular or rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121408765.0U CN215727865U (en) | 2021-06-23 | 2021-06-23 | Electrochemical sensor with adjustable measuring range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121408765.0U CN215727865U (en) | 2021-06-23 | 2021-06-23 | Electrochemical sensor with adjustable measuring range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215727865U true CN215727865U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121408765.0U Active CN215727865U (en) | 2021-06-23 | 2021-06-23 | Electrochemical sensor with adjustable measuring range |
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| CN (1) | CN215727865U (en) |
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2021
- 2021-06-23 CN CN202121408765.0U patent/CN215727865U/en active Active
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