CN207163963U - Electrochemical sensor with capillary channel - Google Patents
Electrochemical sensor with capillary channel Download PDFInfo
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- CN207163963U CN207163963U CN201721038485.9U CN201721038485U CN207163963U CN 207163963 U CN207163963 U CN 207163963U CN 201721038485 U CN201721038485 U CN 201721038485U CN 207163963 U CN207163963 U CN 207163963U
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- capillary channel
- electrode
- liquid storage
- storage cylinder
- electrochemical sensor
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Abstract
The utility model discloses a kind of electrochemical sensor with capillary channel, the sensor includes housing, end cap and electrode, liquid storage cylinder is provided with the housing, capillary channel is offered on case inside wall and bottom, end cap is arranged on liquid storage cylinder openend, electrode is fixed on liquid storage cylinder bottom, and is contacted by the first imbibition film with the capillary channel of liquid storage cylinder.By using above-mentioned technical proposal, junction is frivolous, and neatly, it is convenient to split.By using the technical scheme, in liquid storage cylinder electrolyte is perfused with 1/3~1/2 space, capillary channel is set in liquid storage cylinder, and sensor is either inverted or is laterally located, and electrolyte can be made to be infiltrated by the capillarity of capillary channel to whole liquid storage cavity space, and then reach at electrode, and fully contacted with electrode, the stability and reliability of the sensor are ensure that, simultaneously, the structure of capillary channel is easy to process, and cost is cheap.
Description
Technical field
It the utility model is related to electrochemical sensor field, more particularly to a kind of electrochemical sensor with capillary channel.
Background technology
Electrochemical sensor is the output that the concentration variable of the need measure gas in air is converted into certain corresponding relation
The device of signal.The conventional method of detection to gas is to use electrochemical gas sensor, using fixed electric potential electroanalysis to be substantially former
Reason.Electrochemical sensor is installed in inside electronic detector, and the installation direction of itself depends on instrument internal pcb board connector
Position and PCB itself mounting means, be constant in normal service life time limit inner sensor position.
Existing electrochemical sensor, because the electrolyte in sensor has hygroscopic effect, so can not load too much,
Otherwise sensor leakage can be caused, be typically only capable to load electrolyte with 1/3rd space of sensor housing liquid storage cylinder,
The problem of will necessarily so causing electrolyte fully to contact electrode.Once sensor deflection or inversion, it is likely that make
Into faulty sensor, or when sensor is upside down in instrument, after a period of time that works, electrode zone is due to liquid point
The volatilization of son, electrolyte can be fewer and fewer, and the electrolyte away from electrode zone can not normally be fed, and directly affect sensor
Normal function, easily cause serious accident.For in general electrochemical sensor, generally solves this by setting wick
Kind problem, i.e., the glass waterleaf paper of a strip is set from the region of electrolyte to electrode zone.It is different for sensor
Orientation is placed, it is necessary to assemble the wick of different directions, this directly affects the efficiency of assembling and material cost of product.
Utility model content
To solve problems of the prior art, the utility model specifically provides a kind of electrochemistry with capillary channel and passed
Sensor, makes which kind of state no matter sensor be in, and electrolyte can be reached at electrode all the time, and electrolysis is fully contacted with electrode.
Above-mentioned purpose of the present utility model technical scheme is that：
A kind of electrochemical sensor with capillary channel, the sensor include housing, end cap and electrode, set in the housing
There is liquid storage cylinder, capillary channel is offered on case inside wall and bottom, end cap is arranged on liquid storage cylinder openend, and electrode is fixed on liquid storage
Bottom of chamber portion, and contacted by the first imbibition film with the capillary channel of liquid storage cylinder.
By using above-mentioned technical proposal, electrolyte is perfused with liquid storage cylinder in 1/3~1/2 space, is set in liquid storage cylinder
Capillary channel is put, sensor is either inverted or is laterally located, and electrolyte can be made to be infiltrated by the capillarity of capillary channel
To whole liquid storage cavity space, and then reach at electrode, the first imbibition film is set between capillary channel and electrode, made in capillary channel
Electrolyte fully contacts electrode, ensure that the stability and reliability of the sensor, meanwhile, the structure of capillary channel is easy to process,
Cost is cheap.
The utility model is further arranged to：Capillary channel is to be extended along case inside wall to housing bottom.
By using above-mentioned technical proposal, capillary channel is the groove-like structure of the elongated strip shaped continuously extended, ensures sensor
Different conditions place when, electrolyte can along capillary channel wetting contact to liquid storage cylinder in electrode.
The utility model is further arranged to：Electrode includes working electrode, reference electrode and to electrode, working electrode and right
Isolated between electrode by the second imbibition film.
By using above-mentioned technical proposal, further electrolyte is contacted with electrode using the infiltration of the second imbibition film, ensure
Working electrode and electrochemical reaction between electrode is normally carried out.
The utility model is further arranged to：Capillary channel surface spraying has electrolyte soakage layer.
By using above-mentioned technical proposal, in order to improve wetting capacity of the capillary channel to electrolyte, sprayed in capillary channel
One layer of material for having affinity to electrolyte, reduce contact angle of the electrolyte to capillary rooved face, improve the capillary of capillary channel
Effect.
The utility model is further arranged to：Air admission hole is offered on end cap.
By using above-mentioned technical proposal, be tested gas and entered by the air admission hole on end cap in sensor, so with electricity
Electrochemical reaction occurs for pole, forms electric signal.
The utility model is further arranged to：Flange is provided with the inside of end cap, filter is installed in flange.
By using above-mentioned technical proposal, filter provides mechanicalness protection for sensor, also unwanted with filtering out
The effect of gas, ensure the sensitivity of sensor.As filter material uses activated carbon, activated carbon can filter out most chemical substances, but
Carbon monoxide can not be filtered out.
The utility model is further arranged to：Stitch groove is provided with housing, stitch, stitch and electricity are installed in stitch groove
Pole connects.Stitch groove is isolated by electrode sealing ring with liquid storage cylinder.
By using above-mentioned technical proposal, electrochemical sensor is dense with gas by reacting and producing with tested gas
Spend proportional electric signal and carry out work, the electric signal of sensor is exported by the stitch being connected with electrode, stitch and detection of electrons
Instrument connects.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model housing；
In figure, 1, housing；2nd, end cap；3rd, liquid storage cylinder；4th, capillary channel；5th, the first imbibition film；6th, working electrode；7th, reference electricity
Pole；8th, to electrode；9th, the second imbibition film；10th, air admission hole；11st, flange；12nd, filter；13rd, stitch groove；14th, stitch；15th, it is electric
Pole sealing ring.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
A kind of electrochemical sensor with capillary channel as shown in Figures 1 and 2, the sensor can be that carbon monoxide senses
Device, ammonia gas sensor etc. are used to determine the electrochemical sensor of gas concentration, and it includes housing 1, end cap 2 and electrode, in housing 1
Liquid storage cylinder 3 is provided with, capillary channel 4 is offered on the madial wall of housing 1 and bottom；End cap 2 is by way of clamping or screw fastens
Installed in the openend of liquid storage cylinder 3, air admission hole 10 is offered on end cap 2, the inner side of end cap 2 is provided with flange 11, and flange 11 is circumferential
One set is enclosed or is symmetrically arranged projection, and filter 12 is provided with flange 11；Electrode is arranged in liquid storage cylinder 3.It is preferred that
Ground, for capillary channel 4 to be extended along the madial wall of housing 1 to the bottom of housing 1, capillary channel 4 is the groove of the elongated strip shaped continuously extended
Shape structure, when ensureing that sensor different conditions are placed, electrolyte can be along the wetting contact of capillary channel 4 to the electricity in liquid storage cylinder 3
Pole.For square casing, capillary channel 4 is what vertical and horizontal were set, and for cylindrical shell, capillary channel 4 is from bottom to side
The radial setting of wall.
Electrode is fixed on the bottom of liquid storage cylinder 3 by end cap 2, and is connect by the capillary channel 4 of the first imbibition film 5 and liquid storage cylinder 3
Touch, the electrolyte in capillary channel 4 is fully contacted with electrode.Electrode includes working electrode 6, reference electrode 7 and to electrode
8, working electrode 6 and to being isolated between electrode 8 by the second imbibition film 9.Stitch groove 13 is provided with housing 1, in stitch groove 13
Stitch 14 is installed, stitch 14 is connected with electrode.Electric signal caused by sensor is exported by the stitch 14 being connected with electrode, pin
Pin 14 is connected with electronic detector.
Preferably, the surface spraying of capillary channel 4 has electrolyte soakage layer.Stitch groove 13 passes through electrode sealing ring 15 and liquid storage cylinder
3 isolation.
The specific embodiment of the utility model is only that it is not to the utility model to explanation of the present utility model
Limitation, those skilled in the art can make no creative tribute to the present embodiment as needed after this specification is read
The modification offered, but as long as all being protected in right of the present utility model by Patent Law.
Claims (8)
1. a kind of electrochemical sensor with capillary channel, it is characterised in that the sensor includes housing (1), end cap (2) and electricity
Pole, the housing are groove-like housing, and liquid storage cylinder (3) is provided with housing, capillary is offered on case inside wall and its bottom
Groove (4), end cap are arranged on liquid storage cylinder openend, and electrode is fixed on liquid storage cylinder bottom, and passes through the first imbibition film (5) and liquid storage cylinder
Capillary channel contact.
2. the electrochemical sensor according to claim 1 with capillary channel, it is characterised in that capillary channel is along case inside
Wall is extended to housing bottom.
3. the electrochemical sensor according to claim 1 with capillary channel, it is characterised in that electrode includes working electrode
(6), reference electrode (7) and to electrode (8), working electrode and between electrode pass through the second imbibition film (9) isolate.
4. the electrochemical sensor according to claim 1 with capillary channel, it is characterised in that capillary channel surface spraying has electricity
Solve liquid soakage layer.
5. the electrochemical sensor according to claim 1 with capillary channel, it is characterised in that air admission hole is offered on end cap
(10)。
6. the electrochemical sensor according to claim 1 with capillary channel, it is characterised in that be provided with flange on the inside of end cap
(11) filter (12), is installed in flange.
7. the electrochemical sensor according to claim 1 with capillary channel, it is characterised in that stitch groove is provided with housing
(13) stitch (14), is installed, stitch is connected with electrode in stitch groove.
8. the electrochemical sensor according to claim 7 with capillary channel, it is characterised in that stitch groove is sealed by electrode
Ring (15) is isolated with liquid storage cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038485.9U CN207163963U (en) | 2017-08-18 | 2017-08-18 | Electrochemical sensor with capillary channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721038485.9U CN207163963U (en) | 2017-08-18 | 2017-08-18 | Electrochemical sensor with capillary channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207163963U true CN207163963U (en) | 2018-03-30 |
Family
ID=61716989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721038485.9U Active CN207163963U (en) | 2017-08-18 | 2017-08-18 | Electrochemical sensor with capillary channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207163963U (en) |
-
2017
- 2017-08-18 CN CN201721038485.9U patent/CN207163963U/en active Active
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