CN114689662B - Self-cleaning electrode type conductivity sensor - Google Patents
Self-cleaning electrode type conductivity sensor Download PDFInfo
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- CN114689662B CN114689662B CN202210602908.4A CN202210602908A CN114689662B CN 114689662 B CN114689662 B CN 114689662B CN 202210602908 A CN202210602908 A CN 202210602908A CN 114689662 B CN114689662 B CN 114689662B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 134
- 238000012360 testing method Methods 0.000 claims abstract description 67
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 27
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 14
- 239000010432 diamond Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 210000000078 claw Anatomy 0.000 claims description 20
- 238000005259 measurement Methods 0.000 abstract description 29
- 230000007227 biological adhesion Effects 0.000 abstract description 8
- 238000011065 in-situ storage Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 description 9
- 239000002210 silicon-based material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
- G01N27/07—Construction of measuring vessels; Electrodes therefor
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- B08B1/32—
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/22—Measuring resistance of fluids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention provides a self-cleaning electrode type conductivity sensor, and relates to the technical field of sensors. The invention comprises an integrated electrode and a rotating mechanism; the integrated electrode comprises a substrate, wherein one end of the substrate is provided with a temperature electrode, the outer surface of the substrate is provided with an annular electrode, and the outer surface of the annular electrode is provided with a boron-doped diamond film layer; one end of the rotating mechanism is rotatably connected with a first end cover, the other end of the rotating mechanism is rotatably connected with a second end cover, and the integrated electrode is arranged on the first end cover and is in sliding connection with the first end cover; the rotating mechanism comprises a test cabin and a cleaning cabin fixedly connected with the test cabin; the test chamber is of an open structure; the inside of cleaning cabin is equipped with the cleaning brush, and temperature electrode and ring electrode slidable are equipped with rotating vane to the inside of cleaning cabin outside. The invention improves the synchronism of temperature and conductivity measurement, improves the biological adhesion resistance of the electrode, and has accurate and reliable measurement result; the in-situ cleaning of the electrode is realized, the cleaning is convenient, and the measurement precision is improved.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a self-cleaning electrode type conductivity sensor.
Background
The electrode type conductivity measurement technology is widely applied due to the advantages of high precision, small drift, no electromagnetic field interference and the like, and is a main mode and method for the current ocean salinity measurement research. The most important measurement structure in the electrode type conductivity sensor is a conductivity cell, which usually adopts multiple electrodes and measures the seawater conductivity by measuring the resistance of the seawater between electrodes in the conductivity cell. The conductivity cell adopts an open structure, so that the electrode is directly exposed in the natural sea. The electrode of the electrode type conductivity sensor has poor biological adhesion resistance and is easy to pollute, the performance of the electrode is influenced, and the drift and the error of measurement data are caused, so that the measurement precision of the electrode type conductivity sensor is influenced.
Currently, prior art electrode conductivity sensors are typically retrieved from the sea for cleaning or direct replacement with a new sensor. Therefore, the electrode type conductivity sensor needs frequent manual maintenance and replacement, thereby affecting the measurement efficiency of the electrode type conductivity sensor and increasing the workload and use cost of conductivity measurement; moreover, once cleaning or replacement is not timely, the measured data is inaccurate, and the reliability of the measured data is reduced.
Disclosure of Invention
The invention aims to provide a self-cleaning electrode type conductivity sensor, and aims to solve the problems that in the prior art, the electrode of the electrode type conductivity sensor is poor in biological adhesion resistance and easy to pollute, so that the measurement accuracy of the electrode type conductivity sensor is influenced, and the electrode of the electrode type conductivity sensor needs frequent manual cleaning, so that the workload of conductivity measurement is increased, and the measurement efficiency is reduced.
In order to solve the technical problem, the technical scheme of the invention is realized as follows:
the invention discloses a self-cleaning electrode type conductivity sensor, which comprises an integrated electrode and a rotating mechanism; the integrated electrode comprises a substrate, wherein a temperature electrode which is coaxial with the substrate is arranged at one end of the substrate, seven annular electrodes which are arranged in parallel are arranged on the outer surface of the substrate, a boron-doped diamond film layer is arranged on the outer surface of each annular electrode, and the seven annular electrodes and the temperature electrode are positioned at the same end of the substrate; one end of the rotating mechanism is rotatably connected with a first end cover, the first end cover is a watertight end cover, the integrated electrode is arranged in the axial direction of the first end cover and is in sliding connection with the first end cover, the other end of the rotating mechanism is rotatably connected with a second end cover, and the second end cover is also a watertight end cover; the rotating mechanism comprises a test cabin and a cleaning cabin; the end, provided with the temperature electrode, of the integrated electrode is positioned in the test cabin, and the test cabin is of an open structure, so that seven annular electrodes on the integrated electrode and the temperature electrode are exposed in a water body to be tested; the cleaning cabin is fixedly connected with the testing cabin, a cleaning brush is arranged inside the cleaning cabin, one end of the integrated electrode is provided with the temperature electrode, the end of the integrated electrode can slide to the inside of the cleaning cabin, and rotating blades are arranged outside the cleaning cabin.
The self-cleaning electrode type conductivity sensor adopts an integrated electrode in which a conductivity electrode and a temperature electrode are integrally arranged, seven annular electrodes on the outer surface of a substrate are conductivity measuring electrodes which are also called conductivity electrodes, and the distance between the temperature electrode and the conductivity electrode in the integrated electrode is very close, so that the synchronism of temperature measurement and conductivity measurement is improved; meanwhile, the conductivity electrode in the integrated electrode is provided with the boron-doped diamond film layer, so that the biological adhesion resistance of the conductivity electrode is improved, and the conductivity electrode is firm in structure, not easy to fall off and stable in performance; under the action of the rotating mechanism, the contact area of the temperature electrode and the conductivity electrode with the water body to be measured is effectively increased, the temperature electrode and the conductivity electrode are fully contacted with the water body to be measured, the response speed of the temperature electrode and the conductivity electrode is increased, and the measurement of the temperature and the conductivity is accurate and reliable; the sensor also realizes in-situ cleaning of the integrated electrode, greatly reduces signal drift, improves the measurement precision of the sensor, fully utilizes energy contained in the ocean, realizes kinetic energy conversion, is convenient to clean, improves the working efficiency, reduces the power consumption, realizes the capability of the sensor for working underwater for a long time, prolongs the service life of the sensor, is cleaned on site without recalibration, reduces the cost of manual maintenance and use cost, and is convenient to integrate into mobile observation platforms such as a buoy system, a remote control Robot (ROV), an autonomous unmanned underwater robot (AUV) and the like.
As a preferred embodiment, the testing chamber comprises a testing end connected with the first end cover and a plurality of arc-shaped claws arranged at the same side of the testing end at intervals, and the other ends of the arc-shaped claws are fixedly connected with the cleaning chamber. The test chamber is rotationally connected with the first end cover through the test end, the test chamber realizes an open structure through a plurality of arc claws, and seven annular electrodes and temperature electrodes on the integrated electrode are fully exposed in a water body to be tested; the arc claw has simple structure, easy realization, firm connection and good use performance.
In a preferred embodiment, the test end is provided with a plurality of pushing blades arranged at intervals in the circumferential direction. The cooperation of the rotating blades on the pushing blades and the cleaning cabin realizes smooth rotation of the rotating mechanism, external water flow drives the pushing blades and the rotating blades on the cleaning cabin to enable the pushing blades to rotate to push the cleaning cabin and the testing cabin, contact areas of the temperature electrode, the conductivity electrode and the water body to be tested are effectively improved, in addition, the rotating cleaning cabin and the testing cabin can also effectively prevent the water body to be tested from depositing on the surface of the integrated electrode, and the stability of sensor measurement is improved.
As a preferred embodiment, the pushing blade is disposed in an L shape, and an open end of the pushing blade faces the arc-shaped claw. The stress direction of the pushing blade faces the direction of the cleaning cabin and is consistent with the stress direction of the rotating blade on the cleaning cabin, so that the test cabin and the cleaning cabin synchronously rotate, the rotating speed is consistent, and the effect is good.
In a preferred embodiment, the testing end is rotatably coupled to the first end cap by a first bearing. A first through hole is formed in the testing end, and a first bearing is arranged in the first through hole; the axial of first end cover is equipped with the first mounting hole that is used for installing the integral type electrode, and the one end that first mounting hole is close to the test chamber outwards extends and makes one side of first end cover form the inside first erection column that has first mounting hole, and the inside in first bearing is installed to the first erection column of first end cover.
In a preferred embodiment, a circuit board is provided inside the first end cap, and a lead wire is provided inside the ring electrode, penetrates through the base body, enters the inside of the base body, and is connected with the circuit board inside the first end cap. In general, the substrate of the integrated electrode is made of high-resistance silicon material, wherein the temperature electrode uses a high-precision thermistor as a sensitive element, and the annular electrode is also made of high-resistance silicon material; in an integrated encapsulating mold, a temperature electrode and a high-resistance silicon material are integrally formed into a substrate of an integrated electrode and seven annular electrodes on the outer surface of the substrate, and then a boron-doped diamond film layer is plated on the surfaces of the seven annular electrodes to form the integrated electrode; the integrated electrode is of a hollow structure, and a lead of the annular electrode enters the hollow structure after being positioned firmly and accurately at low resistance, passes through the hollow structure together with a lead of the temperature electrode, penetrates out of the hollow structure and is introduced into the first end cover. The integrated electrode has high structural strength and high hardness, and when the integrated electrode bears water pressure, the structure is not damaged, and the measurement precision is not influenced by the variable quantity; moreover, the boron-doped diamond film layer is plated on the high-resistance silicon material, and the boron-doped diamond film layer is not easy to fall off, has stable structure and strong biological adhesion resistance, and also has the excellent characteristics of wide electrochemical window, high mechanical strength, strong corrosion resistance and the like; therefore, the integrated electrode has stable performance and is resistant to interference.
As a preferred embodiment, the first end cover is further provided with a driving motor, an output shaft of the driving motor is provided with a gear, and the integrated electrode is provided with a sawtooth strip meshed with the gear. The output shaft of the driving motor drives the gear to rotate, and the integrated electrode slides along the axial direction of the first end cover under the meshing action of the gear and the sawtooth racks, so that one end of the integrated electrode, which is provided with the temperature electrode and the annular electrode, enters and exits the cleaning cabin, and the cleaning work of the integrated electrode is completed. The gear and the sawtooth strip are matched closely and move stably, and after the driving motor stops, the integrated electrode is positioned, so that the integrated electrode is convenient to clean.
As a preferred embodiment, the rotating blade includes a first blade and a second blade, the second blade is L-shaped and is uniformly disposed at an end close to the test chamber, an open end of the second blade faces the test chamber, and the first blade is linear and is uniformly disposed at an end far away from the test chamber. The second blade is the same as the pushing blade in shape, but the installation direction is opposite; the arc-shaped claw is convex towards the outer direction of the test chamber, water flow can push the arc-shaped claw to move, the second blade, the arc-shaped claw and the pushing blade are perfectly matched, so that the stress of the whole rotating mechanism is uniform, the synchronous rotation of the rotating mechanism and the end connected with the first end cover and the end connected with the second end cover is realized, the stability of the rotating mechanism is favorably maintained, the rotating mechanism can freely rotate, and the using effect is good. First blade is along the radial outside extension of clean cabin, and this kind of first blade atress is easy, and under the effect of rivers, first blade can the fast rotation get up to drive clean cabin and the test cabin of connecting rotate.
As a preferred embodiment, the cleaning chamber is rotatably connected to the second end cap by a second bearing. The cleaning cabin is arranged in a hollow mode, a cavity is formed in the cleaning cabin, two ends of the cleaning cabin are both provided with openings, and the second bearing is arranged in one end, far away from the testing cabin, of the cleaning cabin; the second end cover extends outwards at one end close to the cleaning cabin to form a second mounting column, and the second mounting column of the second end cover is mounted inside the second bearing.
As a preferred embodiment, the cleaning brushes are arranged in multiple groups at intervals along the axial direction of the cleaning cabin, and each group of cleaning brushes is multiple and is uniformly arranged along the circumferential direction of the cleaning cabin. The cleaning brushes rotate around the surface of the integrated electrode under the rotating action of the cleaning cabin, and the multiple groups of cleaning brushes respectively clean different positions of the surface of the integrated electrode; the cleaning brushes form a channel at the axis of the cleaning cabin, the integrated electrode enters the channel, and the cleaning brushes clean the integrated electrode from different angles, so that attachments on the surface of the integrated electrode are accurately removed.
Compared with the prior art, the invention has the beneficial effects that: the invention adopts the integrated electrode which is formed by integrating the conductivity electrode and the temperature electrode, thus improving the synchronism of temperature measurement and conductivity measurement; the conductivity electrode in the integrated electrode is provided with the boron-doped diamond film layer, so that the biological adhesion resistance of the conductivity electrode is improved, the structure is firm, the conductivity electrode is not easy to fall off, and the performance is stable; under the action of the test chamber and the cleaning chamber, the contact area of the temperature electrode and the conductivity electrode with the water body to be measured is effectively increased, the temperature electrode and the conductivity electrode are fully contacted with the water body to be measured, the response speed of the temperature electrode and the conductivity electrode is increased, and the measurement of the temperature and the conductivity is accurate and reliable; the sensor also realizes in-situ cleaning of the integrated electrode, greatly reduces signal drift, improves the measurement precision of the sensor, fully utilizes energy contained in the ocean, realizes kinetic energy conversion, is convenient to clean, improves the working efficiency, reduces the power consumption, realizes the capability of the sensor for working underwater for a long time, prolongs the service life of the sensor, does not need to be recalibrated during in-situ cleaning, reduces the cost of manual maintenance and use cost, and is convenient to be integrated into mobile observation platforms such as a buoy system, a remote control Robot (ROV), an autonomous unmanned underwater robot (AUV) and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of a self-cleaning electrode type conductivity sensor according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic perspective view of FIG. 1 at the other side;
FIG. 4 is an enlarged view of the structure of the integrated electrode of FIG. 1;
FIG. 5 is a schematic cross-sectional view of the structure of FIG. 4;
FIG. 6 is an enlarged view of the first end cap of FIG. 1;
FIG. 7 is an enlarged schematic view of the test chamber of FIG. 1;
FIG. 8 is an enlarged schematic view of the cleaning chamber of FIG. 1;
FIG. 9 is an enlarged schematic view of the second endcap of FIG. 1;
FIG. 10 is a perspective view of FIG. 1 in a cleaning state;
in the figure: 10-a unitary electrode; 20-a rotating mechanism; 30-a first end cap; 40-a first bearing; 50-a second bearing; 60-a second end cap;
11-temperature electrode; 12-a substrate; 13-a first ring electrode; 14-a second ring electrode; 15-a third ring electrode; 16-a fourth annular electrode; 17-a fifth ring electrode; 18-a sixth ring electrode; 19-a seventh ring electrode;
21-a test end; 22-an arc-shaped claw; 23-a first via; 24-pushing the blade; 25-cleaning the cabin; 26-a first blade; 27-a second blade; 28-a cleaning brush;
31-a first mounting hole; 32-a first mounting post;
61-a second mounting post;
71-a drive motor; 72-gear; 73-sawtooth strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Referring to the attached drawings 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, the invention provides a self-cleaning electrode type conductivity sensor, which utilizes the energy contained in the water body to be measured to clean the electrodes through the flow of the water body to be measured, is convenient to clean, is cleaned on site without recalibration, and improves the working efficiency and the measurement accuracy. The self-cleaning electrode type conductivity sensor comprises an integrated electrode 10 and a rotating mechanism 20; the integrated electrode 10 comprises a substrate 12, wherein one end of the substrate 12 is provided with a temperature electrode 11 which is coaxially arranged with the substrate, the outer surface of the substrate 12 is provided with seven annular electrodes which are arranged in parallel, the outer surface of each annular electrode is provided with a boron-doped diamond film layer, and the seven annular electrodes and the temperature electrode 11 are positioned at the same end of the substrate 12; the seven annular electrodes on the outer surface of the substrate 12 are conductivity measuring electrodes, which are also called conductivity electrodes, the close arrangement of the temperature electrode 11 and the annular electrodes improves the synchronism of temperature measurement and conductivity measurement, and the arrangement of the boron-doped diamond film layer improves the anti-biological adhesion capability of the conductivity electrodes. One end of the rotating mechanism 20 is rotatably connected with a first end cover 30, the first end cover 30 is a watertight end cover, the integrated electrode 10 is arranged in the axial direction of the first end cover 30 and is in sliding connection with the first end cover 30, the other end of the rotating mechanism 20 is rotatably connected with a second end cover 60, and the second end cover 60 is also a watertight end cover; the rotating mechanism 20 includes a test chamber and a cleaning chamber 25; one end of the integrated electrode 10, which is provided with the temperature electrode 11, is positioned inside the test cabin, and the test cabin is of an open structure, so that seven annular electrodes on the integrated electrode 10 and the temperature electrode 11 are exposed in a water body to be tested; the cleaning cabin 25 is fixedly connected with the testing cabin, a cleaning brush 28 is arranged inside the cleaning cabin 25, one end of the integrated electrode 10, which is provided with the temperature electrode 11, can slide into the cleaning cabin 25, and a rotating blade is arranged outside the cleaning cabin 25; under the action of the rotating blades, the flow of the water body to be measured can drive the test cabin and the cleaning cabin 25 to rotate, so that the contact area between the temperature electrode 11 and the water body to be measured and the contact area between the conductivity electrode and the water body to be measured are effectively increased, the temperature electrode 11 and the conductivity electrode are fully contacted with the water body to be measured, the response speed of the temperature electrode 11 and the conductivity electrode is increased, and the measurement of the temperature and the conductivity is accurate and reliable. The sensor realizes in-situ cleaning of the integrated electrode 10, greatly reduces signal drift, improves the measurement precision of the sensor, realizes the capability of working underwater for a long time, prolongs the service life of the sensor, is cleaned on site without recalibration, reduces the cost of manual maintenance and the use cost, and is conveniently integrated into mobile observation platforms such as a buoy system, a remote-controlled Robot (ROV), an autonomous unmanned underwater robot (AUV) and the like.
Referring to fig. 1, 2, 3, 4 and 5, as a preferred embodiment, a lead wire is provided inside the ring electrode, and a circuit board is provided inside the first cap 30, and the lead wire penetrates through the base 12 into the inside of the base 12 and is connected to the circuit board inside the first cap 30. In general, the substrate 12 of the integrated electrode 10 is made of a high-resistance silicon material, wherein the temperature electrode 11 is a high-precision thermistor as a sensitive element, and the seven ring electrodes are also made of a high-resistance silicon material; in an integrated encapsulating mold, a temperature electrode 11 and a high-resistance silicon material are integrally molded into a substrate 12 of an integrated electrode 10 and seven annular electrodes on the outer surface of the substrate, and then a boron-doped diamond film layer is plated on the surfaces of the seven annular electrodes, so that the integrated electrode 10 is obtained; the interior of this integrated electrode 10 is a hollow structure, and the lead wire of the ring electrode enters the hollow structure after being positioned firmly and accurately with low resistance, passes through the hollow structure together with the lead wire of the temperature electrode 11, passes out of the hollow structure, and is introduced into the interior of the first end cap 30. The integrated electrode 10 has high structural strength and high hardness, and when the integrated electrode bears a certain water pressure, the structure cannot be damaged, and the measurement precision is not influenced by the variable quantity; moreover, the boron-doped diamond film layer is plated on the high-resistance silicon material, and the boron-doped diamond film layer is not easy to fall off, has stable structure and strong biological adhesion resistance, and also has the excellent characteristics of wide electrochemical window, high mechanical strength, strong corrosion resistance and the like; therefore, the integrated electrode 10 has stable performance and is resistant to interference. In general, the seven ring electrodes are composed of a first ring electrode 13, a second ring electrode 14, a third ring electrode 15, a fourth ring electrode 16, a fifth ring electrode 17, a sixth ring electrode 18 and a seventh ring electrode 19, wherein the first ring electrode 13 and the seventh ring electrode 19 are ground electrodes, the fourth ring electrode 16 is an exciting electrode, the second ring electrode 14, the third ring electrode 15, the fifth ring electrode 17 and the sixth ring electrode 18 are measuring electrodes, the first ring electrode 13, the second ring electrode 14, the third ring electrode 15 and the fourth ring electrode 16 form one measuring part, the fourth ring electrode 16, the fifth ring electrode 17, the sixth ring electrode 18 and the seventh ring electrode 19 form another measuring part, and the seven ring electrodes are main working parts for measuring the conductivity of the water body. The alternating current excitation signal flows in through the middle electrode, namely the fourth annular electrode 16, then flows out from the grounding electrodes, namely the first annular electrode 13 and the seventh annular electrode 19, when the current flows through the conductivity electrode, constant voltages processed by a circuit are generated, namely U14-15 and U17-18, the average value of the two sums of U14-15 and U17-18 is taken, and then the temperature value measured by the temperature electrode 11 is combined, so that the conductivity of the measured water body can be calculated.
Referring to fig. 1, 2, 3, 7 and 8, as a preferred embodiment, the testing chamber includes a testing end 21 connected to a first end cap 30 and a plurality of spaced arc-shaped claws 22 disposed on the same side of the testing end 21, and the other ends of the arc-shaped claws 22 are fixedly connected to a cleaning chamber 25. The test chamber is rotationally connected with the first end cover 30 through the test end 21, the test chamber realizes an open structure through the plurality of arc claws 22, and seven annular electrodes and the temperature electrode 11 on the integrated electrode 10 are fully exposed in a water body to be tested; the arc claw 22 has simple structure, easy realization, firm connection and good use performance. Preferably, the testing end 21 is provided with a plurality of pushing blades 24 arranged at intervals in the circumferential direction. Promote the rotating vane cooperation on blade 24 and the clean cabin 25, realized rotary mechanism 20's smooth rotation, external rivers drive and promote blade 24 and clean the rotating vane on the cabin 25 and make it promote clean cabin 25 and test chamber rotatory, the area of contact of temperature electrode 11 and conductivity electrode and the water that awaits measuring has effectively been improved, and, this kind of pivoted clean cabin 25 and test chamber can also effectively prevent the deposit of the water that awaits measuring on integral type electrode 10 surface, sensor measuring stability has been improved. Further, the pushing blade 24 is disposed in an L shape, and an open end of the pushing blade 24 faces the arc claw 22. The stress of the pushing blade 24 faces the direction of the cleaning cabin 25 and is consistent with the stress direction of the rotating blade on the cleaning cabin 25, so that the test cabin and the cleaning cabin 25 synchronously rotate at consistent rotating speed and good effect.
Referring to fig. 1, 2, 3, 6 and 10, as a preferred embodiment, the testing end 21 is rotatably coupled to the first end cap 30 by a first bearing 40. The interior of the testing end 21 is provided with a first through hole 23, and a first bearing 40 is arranged in the first through hole 23; the first end cover 30 is provided with a first mounting hole 31 in the axial direction for mounting the integrated electrode 10, the first mounting hole 31 extends outwards at one end close to the test chamber, so that a first mounting column 32 with the first mounting hole 31 inside is formed at one side of the first end cover 30, and the first mounting column 32 of the first end cover 30 is mounted inside the first bearing 40. Preferably, the first end cap 30 is further provided with a driving motor 71, an output shaft of the driving motor 71 is provided with a gear 72, and the integrated electrode 10 is provided with a sawtooth rack 73 engaged with the gear 72; specifically, the base body 12 of the integrated electrode 10 is provided with a serrated bar 73 that engages with the gear 72 at an end remote from the ring electrode. An output shaft of the driving motor 71 drives the gear 72 to rotate, and under the meshing action of the gear 72 and the sawtooth rack 73, the integrated electrode 10 slides along the axial direction of the first end cover 30, so that one end of the integrated electrode 10, which is provided with the temperature electrode 11 and the annular electrode, enters and exits the cleaning cabin 25, and the cleaning work of the integrated electrode 10 is completed. The gear 72 and the sawtooth rack 73 are matched tightly and move stably, and after the driving motor 71 stops, the integrated electrode 10 is positioned, so that the cleaning is convenient. In general, the driving motor 71 is a waterproof motor, the first end cover 30 is provided with a mounting plate for mounting the driving motor 71, the driving motor 71 is fixed on the mounting plate, and the mounting plate is fixed on the first end cover 30, so that the mounting of the driving motor 71 is realized; the circuit board is arranged in a cavity inside the first end cover 30 and is connected with a controller, the driving motor 71 is connected with the controller, and the controller controls the driving motor 71 to work by analyzing the degree of pollution on the surface of the integrated electrode 10, so that the integrated electrode 10 is cleaned; of course, a storage battery may be disposed in the first end cap 30, and the storage battery supplies power to the controller and the driving motor 71, so that the controller and the driving motor can complete corresponding operations.
Referring to fig. 1, 2, 3, 7 and 8, as a preferred embodiment, the rotating blade includes a first blade 26 and a second blade 27, the second blade 27 is disposed in an L shape and is uniformly disposed at one end close to the testing chamber, the open end of the second blade 27 faces the testing chamber, and the first blade 26 is disposed in a linear shape and is uniformly disposed at one end far from the testing chamber. The second blade 27 is the same shape as the pushing blade 24, but is installed in the opposite direction; the arc claw 22 is convex towards the outer direction of the test chamber, water flow can also push the arc claw 22 to move, and the second blade 27, the arc claw 22 and the pushing blade 24 are perfectly matched, so that the stress of the whole rotating mechanism 20 is uniform, synchronous rotation of one end of the rotating mechanism 20 connected with the first end cover 30 and one end of the rotating mechanism connected with the second end cover 60 is realized, the stability of the rotating mechanism 20 is favorably maintained, the rotating mechanism 20 can freely rotate, and the use effect is good. The first blade 26 extends outwards along the radial direction of the cleaning chamber 25, and the first blade 26 is easily stressed, and under the action of water flow, the first blade 26 can rotate rapidly, so that the cleaning chamber 25 and the test chamber connected with the cleaning chamber are driven to rotate. Referring to fig. 1, 2, 8 and 9, the cleaning chamber 25 is preferably pivotally connected to the second end cap 60 by the second bearing 50. The cleaning cabin 25 is arranged in a hollow mode, a cavity is formed in the cleaning cabin 25, two ends of the cleaning cabin 25 are arranged in an open mode, and the second bearing 50 is arranged in one end, away from the test cabin, of the cleaning cabin 25; the second end cap 60 extends outwardly at an end adjacent the cleaning chamber 25 to form a second mounting post 61, and the second mounting post 61 of the second end cap 60 is mounted inside the second bearing 50.
Referring to fig. 1, 2, 3, 8 and 10, as a preferred embodiment, the cleaning brushes 28 are arranged in a plurality of groups at intervals along the axial direction of the cleaning compartment 25, and each group of the cleaning brushes 28 is a plurality of cleaning brushes and is uniformly arranged along the circumferential direction of the cleaning compartment 25. The cleaning brushes 28 rotate around the surface of the integrated electrode 10 under the rotation action of the cleaning cabin 25, and the multiple groups of cleaning brushes 28 respectively clean different positions on the surface of the integrated electrode 10; the plurality of cleaning brushes 28 form a channel at the axis of the cleaning chamber 25 into which the integrated electrode 10 enters; of course, the length of the cleaning brush 28 may also be trimmed to ensure that the integral electrode 10 can enter the channel and that the cleaning brush 28 can complete the cleaning of the integral electrode 10, depending on the particular size of the integral electrode 10; the plurality of cleaning brushes 28 clean the integrated electrode 10 from different angles, thereby accurately removing the attachments from the surface of the integrated electrode 10. In general, a plurality of circles of threaded holes are uniformly formed in the circumferential direction of the inner wall of the cleaning cabin 25, a plurality of threaded holes are formed in each circle, and the cleaning brush 28 is installed inside the cleaning cabin 25 through the threaded holes, so that the cleaning brush 28 is convenient to install, convenient to disassemble and easy to replace, and is favorable for being taken down for cleaning; the cleaning brush 28 with this arrangement allows for replacement of the cleaning brush or brushes 28, taking into account wear of the cleaning brush 28, avoiding replacement of the cleaning compartment 25, and reducing costs. The self-cleaning electrode type conductivity sensor is integrated into a buoy system, a remote control Robot (ROV), an autonomous unmanned underwater vehicle (AUV) and other mobile observation platforms, under the normal condition, the self-cleaning electrode type conductivity sensor is fixed on the mobile observation platform through a first end cover 30, a threaded hole is formed in the outer side of the first end cover 30, a fixing screw is arranged on the mobile observation platform, the fixing screw enters the threaded hole to realize the fixed connection of the mobile observation platform and the first end cover 30, and the self-cleaning electrode type conductivity sensor is fixed on the mobile observation platform through the first end cover 30. Therefore, in the case where the first end cap 30 of the self-cleaning electrode type conductivity sensor is stationary, the external water flow pushes the test and cleaning chambers 25 to rotate by pushing the blades 24 and rotating the blades, while the integrated electrode 10 remains stationary, thereby achieving relative movement of the test and cleaning chambers 25 and the integrated electrode 10.
Therefore, compared with the prior art, the invention has the beneficial effects that: the invention adopts the integrated electrode 10 which is formed by integrating the conductivity electrode and the temperature electrode 11, thus improving the synchronism of temperature measurement and conductivity measurement; the conductivity electrode in the integrated electrode 10 is provided with the boron-doped diamond film layer, so that the biological adhesion resistance of the conductivity electrode is improved, the structure is firm, the shedding is not easy, and the performance is stable; under the action of the test cabin and the cleaning cabin 25, the contact areas of the temperature electrode 11 and the conductivity electrode with the water body to be measured are effectively increased, the temperature electrode 11 and the conductivity electrode are fully contacted with the water body to be measured, the response speed of the temperature electrode 11 and the conductivity electrode is increased, and the measurement of the temperature and the conductivity is accurate and reliable; the sensor also realizes in-situ cleaning of the integrated electrode 10, greatly reduces signal drift, improves the measurement precision of the sensor, fully utilizes energy contained in the ocean, realizes kinetic energy conversion, is convenient to clean, improves the working efficiency, reduces the power consumption, realizes the capability of the sensor for working underwater for a long time, prolongs the service life of the sensor, is cleaned on site without recalibration, reduces the cost of manual maintenance and use cost, and is convenient to integrate into mobile observation platforms such as a buoy system, a remote control Robot (ROV), an autonomous unmanned underwater robot (AUV) and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A self-cleaning electrode-based conductivity sensor, comprising:
the integrated electrode comprises a substrate, wherein a temperature electrode which is coaxial with the substrate is arranged at one end of the substrate, seven annular electrodes which are arranged in parallel are arranged on the outer surface of the substrate, a boron-doped diamond film layer is arranged on the outer surface of each annular electrode, and the seven annular electrodes and the temperature electrode are positioned at the same end of the substrate;
the electrode assembly comprises a rotating mechanism, a first end cover, a second end cover and a power supply, wherein one end of the rotating mechanism is rotatably connected with the first end cover, the first end cover is a watertight end cover, the integrated electrode is arranged in the axial direction of the first end cover and is in sliding connection with the first end cover, the other end of the rotating mechanism is rotatably connected with the second end cover, and the second end cover is also a watertight end cover; the rotating mechanism includes:
the integrated electrode is provided with a temperature electrode, one end of the integrated electrode, which is provided with the temperature electrode, is positioned in the test cabin, the test cabin comprises a test end connected with the first end cover and a plurality of arc-shaped claws arranged on the same side of the test end at intervals, and the test cabin is of an open structure, so that seven annular electrodes and the temperature electrode on the integrated electrode are exposed in a water body to be tested;
the cleaning cabin is fixedly connected with the testing cabin, the other end of the arc-shaped claw is fixedly connected with the cleaning cabin, a cleaning brush is arranged inside the cleaning cabin, the integrated electrode is arranged at one end of the temperature electrode and can slide to the inside of the cleaning cabin, and rotating blades are arranged outside the cleaning cabin.
2. The self-cleaning electrode-based conductivity sensor of claim 1, wherein:
and a plurality of pushing blades arranged at intervals are arranged on the circumference of the testing end.
3. The self-cleaning electrode-based conductivity sensor of claim 2, wherein:
the pushing blade is arranged in an L shape, and the opening end of the pushing blade faces the arc-shaped claw.
4. The self-cleaning electrode-based conductivity sensor of claim 1, wherein:
the test end is rotatably connected with the first end cover through a first bearing.
5. The self-cleaning electrode-based conductivity sensor of claim 1, wherein:
the circuit board is arranged in the first end cover, the lead is arranged in the annular electrode and penetrates through the base body to enter the base body and be connected with the circuit board in the first end cover.
6. The self-cleaning electrode-based conductivity sensor of claim 5, wherein:
the first end cover is further provided with a driving motor, an output shaft of the driving motor is provided with a gear, and the integrated electrode is provided with a sawtooth strip meshed with the gear.
7. Self-cleaning electrode-type conductivity sensor according to any one of claims 1 to 6, wherein:
the rotating blade comprises a first blade and a second blade, the second blade is L-shaped and is evenly arranged at one end close to the test chamber, the open end of the second blade faces the test chamber, and the first blade is linearly arranged and is evenly arranged at one end far away from the test chamber.
8. The self-cleaning electrode-based conductivity sensor of claim 1, wherein:
the cleaning cabin is rotatably connected with the second end cover through a second bearing.
9. The self-cleaning electrode-based conductivity sensor of claim 1, wherein:
the cleaning brushes are multiple groups which are arranged along the axial direction of the cleaning cabin at intervals, and each group of cleaning brushes are multiple and are uniformly arranged along the circumferential direction of the cleaning cabin.
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Inventor after: Gai Zhigang Inventor after: Liu Shousheng Inventor after: Chen Zhigang Inventor after: Sun Xiaoling Inventor after: Zhang Lili Inventor after: Zhou Xuesong Inventor after: Xia Guangsen Inventor after: Xu Mingxia Inventor after: Chai Xu Inventor after: Zhang Xueyu Inventor after: Guo Fengxiang Inventor after: Zhang Mei Inventor after: Wang Yibao Inventor after: Hu Ding Inventor after: Wang Shaoyan Inventor before: Xu Mingxia Inventor before: Liu Shousheng Inventor before: Chen Zhigang Inventor before: Sun Xiaoling Inventor before: Zhang Lili Inventor before: Zhou Xuesong Inventor before: Xia Guangsen Inventor before: Gai Zhigang Inventor before: Chai Xu Inventor before: Zhang Xueyu Inventor before: Guo Fengxiang Inventor before: Zhang Mei Inventor before: Wang Yibao Inventor before: Hu Ding Inventor before: Wang Shaoyan |