CN110160598A - A kind of electrode-type liquid-level meter - Google Patents
A kind of electrode-type liquid-level meter Download PDFInfo
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- CN110160598A CN110160598A CN201910605784.3A CN201910605784A CN110160598A CN 110160598 A CN110160598 A CN 110160598A CN 201910605784 A CN201910605784 A CN 201910605784A CN 110160598 A CN110160598 A CN 110160598A
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- type liquid
- level meter
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
- G01F23/242—Mounting arrangements for electrodes
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
A kind of electrode-type liquid-level meter, the corrosion resistant measuring electrode of portion in contact with the electrolyte passes through and by the support of electrical isolation rod-shaped material and insulation, easy for installation, adapts to various corrosive mediums, can be used for having strong stirring environment, and allows after installation that measurement point is limited to be adjusted.
Description
Technical field
The present invention relates to a kind of production methods of electrode-type liquid-level meter, in particular to are corrosive and have for measured medium
In the environment of mechanical stirring disturbance.
Background technique
There are many type of liquidometer, are divided into contact and contactless liquidometer substantially.For mordant tested
Medium can generally use contactless liquidometer, such as ultrasonic wave or radar level gauge measuring instrumentss.It can also be with contact
Liquidometer, such as cable floating ball lever meter, side-mounted floating ball lever meter, connecting rod floating ball lever meter, inserted metal bar liquidometer
Deng contact liq part needs to be made into using resistant material, such as plastics, stainless steel, titanium, to prevent medium to liquidometer
Corrosion.Ultrasonic level gage, radar level gauge are using more, but cost is more expensive, and the foam on measuring medium surface, probe
Moisture condensation will affect the accuracy of measurement.Cable floating ball lever meter fitting depth facilitates adjustable, is in liquid-level switch using most
One kind, it is rubber material that probe material, which is generally PVC or PP or similar mixed plastic material, cable, to it is specific organically or
It is general to mix inorganic constituents corrosion resistance, and for there is the occasion of blender to need to prevent cable from winding and cutting with scissors to break.It is side-mounted
The available corrosion-resistant material of floating ball lever meter is more, but is mounted in side wall, needs to punch and seal in side wall, increases side
The risk of wall leakage, and it is easy failure for having particle or being possible to generate the media applications environment of crystallization, and installation is inconvenient,
Appearance does not accomplish neat appearance generally after installation,.The minimum spacing of connecting rod floating ball lever meter, measurement is restricted, and for having
Grain or the media applications environment for being possible to generate crystallization are easy failure.Inserted metal bar liquidometer is easy to make, but for
It wants at regular intervals between multiple bars when the anti-corrosion higher cost, especially multiple height measurement points of corrosive medium, or does electricity
Insulating supporting prevents metallic rod from interconnecting, this results in the areas of plane for being inserted into multiple measurement metallic rods big, and connects
Device can also be connected sometimes in having solid deposition or the medium for having certain viscosity, due to cost to be saved, the section of metallic rod
Product it is typically small, stirring environment in also can torsional deformation, influence using effect.The liquidometer of these contacts cannot all be applied
There is the occasion of fiber in medium.Side-mounted floating ball lever meter, connecting rod floating ball lever meter, inserted metal bar liquidometer are once pacified
After dress, it is difficult to change the measurement point height of instrument.
Summary of the invention
In order to keep liquid level emasuring device easy for installation, corrosion-resistant medium is adapted to, for there is strong stirring environment, is surveyed after installation
Amount point facilitates adjustable, and the present invention provides a kind of a kind of new invention --- electricity for being different from current all contact liquid level emasuring devices
Pole formula liquidometer.
Realize the technical scheme is that liquidometer insertion be filled in the container of fluid to be measured, pass through fluid level controller
Conducting wire between electrode control line connecting terminal is connected with the fluid level controller of control system, by measuring two level electrodes
Whether whether conducting to determine fluid to be measured floods the two level electrodes so that it is determined that fluid to be measured liquid level.Liquid of the present invention
It two by the rod-shaped skeleton of electrical isolation and no less than, position electrode, insulate from each other, is embedded in the rod-shaped skeletal internal of electrical isolation,
It stretches out electrode control line connecting terminal in electrical isolation baculum top of the trellis and exposes electrode in the rod-shaped skeleton lower part that is electrically insulated and connect liquid
The level electrode at end collectively constitutes electrode liquidometer.
The rod-shaped skeleton lower end thereof that is electrically insulated is inserted into conductive fluid to be measured, and liquid level is stretched out on top, and rod-shaped skeleton is
Electrical insulator, and play the role of supporting fixed level electrode.Level electrode top endpoint is as electrode control line connecting terminal
Expose out of top insulator that be electrically insulated rod-shaped skeleton, another termination electrode liquid receiving end of level electrode is from the rod-shaped skeleton that is electrically insulated
Lower part different height expose insulator except, fluid to be measured can be adequately exposed to.All effective level electrode liquid receiving ends
Within the liquid level variable range of fluid to be measured, the electrode as auxiliary that portion in contact with the electrolyte is low in electrode liquid receiving end, electricity
The high conduct measuring electrode of pole liquid receiving end physical location.The fluid level controller of control system and electrode control line connecting terminal phase
It connects, respectively from the electrode combination of auxiliary at different electric loops, fluid level controller mentions different measuring electrodes for electric loop
Power supply source.It can determine whether conducting liquid has been connected to this circuit by electric current in measurement electric loop or resistance
Two level electrodes.If electric current is not less than some value, it can determine that the liquid level of fluid to be measured has been at least up to the two liquid levels
The height of a relatively high level electrode in electrode；Can also be to determine level electrode by measuring the resistance of electric loop
It is no to be switched on, if the result of measurement resistance can consider that circuit is connected to no more than some resistance value, indicate tested
The liquid level of liquid has been at least up to one height relatively high in the two level electrodes.Otherwise it is considered that fluid to be measured extremely
It is not exposed to this relatively high level electrode position less.Any two level electrode can form circuit progress in principle
Measurement, but in order to express easily, and in practical applications relatively rationally, liquid receiving end physical location in all electrodes is minimum
One is named as auxiliary electrode, is not re-used as measuring electrode use in principle.Remaining electrode is all higher than auxiliary electrode in this way, all
It can be used as measuring electrode, be connected to control system as the measurement point for measuring different liquid levels, control system detects some measurement
Whether electrode and this auxiliary electrode are connected, and on state can determine that the liquid level of fluid to be measured is at least up to this measuring electrode
Height, failing on state can determine that the liquid level of fluid to be measured does not reach the height of this measuring electrode.It assists in this way
The measuring electrode collective effect of electrode and different height can detecte liquid level and be in some section, if all measurement points
It can be connected with auxiliary electrode, then liquid level is greater than or equal to highest measurement point；If connecing two adjacent measurement points of liquid height
Only one is connected with auxiliary electrode, then liquid level is between two measurement points；If all measurement points and auxiliary electrode cannot
Conducting, then liquid level is lower than minimum measurement point.
In the liquid level variation range of rod-shaped skeleton insertion fluid to be measured that is electrically insulated, it is not counted in including auxiliary electrode, Ke Yiyou
The measurement point of a large amount of different heights is used to monitor the section at the current place of liquid level, and whole conducts can be used in control system in this way
Measurement point can also only select a part as measurement point, increase the flexibility of selection, this is that emphasis of the present invention is to be protected
One of content.
In actual fabrication, above-mentioned level electrode integrally can be same material, can also be made of different functional sections,
Each functional section is made of different material, can there is different shapes, if final all functional sections accomplish it is electrical good
Good conducting.If electrode liquid receiving end wants contact liq, the conductor material with good corrosion resistance is needed, electrode control line connecting terminal needs
Molding electric binding terminal can be used, in electrode liquid receiving end and electrode control line connecting terminal with control system line
Between, it can be connect with the connecting wire of other electrode mutual insulatings.Electrode liquid receiving end can according to need using stainless steel etc.
Material production applies and is corroding not strong occasion, can also use the production of the inert materials such as graphite, gold, platinum, be applied to corrosion
The strong occasion of property.Electrode liquid receiving end is made with materials such as carbon steel, copper, lead, steel alloys, a part even electrode of contact liq connects
Liquid end integral coating conductive protecting layer, especially with one or more of such as gold, platinum, graphite, graphene conductive inert materials
Material is used as protective layer, this can above substitute the mode that ontology all uses precious metal inert material to make in application, and cost can drop
It is low, nor affect on the effect used.This is one of emphasis of the present invention content to be protected, the material of the above specific electrode, composition
Protection scope of the present invention is not reduced in the selection of part and electrode liquid receiving end protective layer.
In actual fabrication, the production method for the rod-shaped skeleton that is electrically insulated has very much.For example mold is used, electrode is first connect liquid
End and connecting wire such as insulated cable are placed in place, and the packing material that inside injection is electrically insulated after solidifying fills material
Mold is removed after material solidification, the rod-shaped skeleton that is entirely electrically insulated just has been made into integrally formed liquid level with liquid receiving end and connecting wire and has visited
Head, or even can also be integrally formed including connector, can carry out the operations such as shaping after being made into again makes liquid level in respect of preferably outer
Sight and using effect.The tube of electrical isolation can also be used to solidify as mold packing material in the above production, connected after solidification
With electrical isolation tube collectively as liquidometer the rod-shaped skeleton of electrical isolation, the tube material of electrical isolation can be plastics,
The material of the one or more such as organic glass, nylon, resin, glass fibre.The section of tube can be round, polygon
Shape, without fixed etc., do not affect using effect, protection scope of the present invention is not reduced in the shape selection in section.Curable
Packing material can also be adopted using the material being electrically insulated after resinae such as any solidification of epoxy resin, polyurethane, silica gel
Soften or melt when with heating, the plastics such as cured PVC, PP or mixed plastic are as filler material after cooling.Mold and filler material
Same material or different materials can be used.Specifically be electrically insulated above rod-shaped skeleton die material selection, it is whether dismountable,
The material of curable packing material is only for example, and protection scope of the present invention is not reduced in material selection.This is also present invention weight
One of point content to be protected.
If the rod-shaped skeleton of being electrically insulated is fixed on container or other supports are sentenced prevents from shaking, can it is electric absolutely
Some suitable position of the top of edge bracket makes connector, such as fastening seat, screw thread, flange, sucker component.In particular for close
The occasion of envelope, screw thread, flange can easily be accomplished to seal.Sealing element both can with the rod-shaped skeleton integral production that is electrically insulated,
It can also be respectively completed.Protection scope of the present invention is not reduced in the above specific way of fixed form and the selection of connector.
It is easy for installation that the beneficial effects of the invention are as follows liquid level emasuring devices, adapts to various corrosive mediums, can be used for having strong
Strong stirring environment, measurement point limited can adjust after installation.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the principle of the present invention figure.
Fig. 2 is one embodiment of the invention.
Fig. 3 is second embodiment of the invention.
Fig. 4 is third embodiment of the invention.
Fig. 5 is the 4th embodiment of the invention.
In the figures above: 1. containers, 2. fluids to be measured, the 3. rod-shaped skeletons of electrical isolation, 4. level electrodes, 5. electrode control lines
Connecting terminal, 6. electrode liquid receiving ends, 7. filler materials, 8. molds, the fluid level controller of 9. control systems, 10. fluid level controllers
With the conducting wire between electrode control line connecting terminal, 11. connecting wires, 12. first electrode liquid receiving ends, 13. second electrodes
Liquid receiving end, 14. third electrode liquid receiving ends, 15. the 4th electrode liquid receiving ends, 16. the 5th electrode liquid receiving ends, 17. connections
Part.
Specific embodiment
In Fig. 1, by rod-shaped skeleton (3) and no less than two of being electrically insulated, insulate from each other, be embedded in electrical isolation bar
Shape skeletal internal, electrode control line connecting terminal (5) are stretched out in electrical isolation baculum top of the trellis and in the rod-shaped skeleton that is electrically insulated
The level electrode (4) that electrode liquid receiving end (6) are exposed in side collectively constitutes electrode liquidometer.
In the internal conductive fluid to be measured (2) of rod-shaped skeleton (3) lower part insertion container (1) that is electrically insulated, liquid is stretched out on top
Face, rod-shaped skeleton are electrical insulator, and play the role of supporting fixed level electrode.The top endpoint conduct of level electrode (4)
Electrode control line connecting terminal (5) exposes out of the rod-shaped skeleton (3) of being electrically insulated top insulator, level electrode (4) it is another
Termination electrode liquid receiving end (6) exposes except insulator from the different height for the rod-shaped skeleton that is electrically insulated, and can be adequately exposed to test solution
Body (2).For the electrode liquid receiving end that physical bit is set low in electrode liquid receiving end as auxiliary electrode, electrode liquid receiving end physical location is high
Level electrode connects as measuring electrode, the fluid level controller (9) of control system with electrode control line connecting terminal (5).In this way
Line between the fluid level controller of control system, two fluid level controllers and electrode control line connecting terminal, two it is corresponding
Electrode control line connecting terminal, fluid to be measured, auxiliary electrode, can form electric loop at measuring electrode, and fluid level controller is electricity
Air circuit provides power supply.It can be by the electric current in measurement electric loop or the resistance between packet measuring electrode, auxiliary electrode, really
Determine two electrodes whether conducting liquid has been connected to this circuit.If electric current is not less than some setting value or the small Mr. Yu of resistance
A setting value illustrates that this circuit can be connected, and the liquid level of fluid to be measured has been at least up to relatively high one in the two electrodes
The height of a electrode；If electric current is less than some setting value or resistance is greater than some setting value, it is believed that fluid to be measured is at least
It is not exposed to this relatively high measuring electrode position, liquid level is less than the height of this this relatively high electrode, this
A height represents some depth determined of fluid to be measured.Such device can be used to measure whether fluid to be measured is measuring
When reach this depth.
Fig. 2 is one embodiment of the invention.Only there are two electrodes in Fig. 1, and one as auxiliary electrode one work
For measuring electrode, there are 5 level electrodes in Fig. 2, wherein first electrode liquid receiving end (12), second electrode liquid receiving end
(13), third electrode liquid receiving end (14), the 4th electrode liquid receiving end (15), the 5th electrode liquid receiving end (16) are respectively 5
The position of the electrode liquid receiving end of electrode, first electrode liquid receiving end (12) is minimum, its connected electrode is other as auxiliary electrode
Electrode is measuring electrode.In the present embodiment, the fluid level controller of control system into selected second electrode liquid receiving end (13),
4th electrode liquid receiving end (15) is as measurement point, for stating high and low two liquid levels of fluid to be measured, for control pump or
If other equipment can be with the higher 5th find that height as high liquid level control point is not satisfactory in operation
The measurement point of a electrode liquid receiving end (16) or lower third electrode liquid receiving end (14) as high liquid level.The present embodiment only indicates
5 electrodes are gone out, when implementation can make more or fewer electrodes and electrode liquid receiving end, make the adjustment of actual spot of measurement more
It is convenient.Citing of the present embodiment to number of poles, does not reduce protection scope of the present invention.
Fig. 3 is second embodiment of the invention.Single electrode is made of different functional sections, and each functional section is not using
Same material production.If first electrode liquid receiving end (12) wants contact liq, the conductor material with good corrosion resistance is needed, with stone
Ink is used as electrode liquid receiving end；Electrode control line connecting terminal (5) uses molding electric binding terminal；Electrode liquid receiving end and electrode
It is connected between control line connecting terminal with the connecting wire (11) with insulation protection.So in the present embodiment, the electricity of graphite material
Pole liquid receiving end can be resistant to very strong corrosion, electrode liquid receiving end can also be made with metallic copper, in the electrode liquid receiving end made
Gold is plated in outer surface, and liquidometer can be made to can be used for the corrosion such as high concentrated acid, alkali, salt outside gold with coating coated graphite alkene
In the fluid to be measured of characteristic.Embodiment is merely to illustrate that alternative and economical, the specific electrode of electrode component part
The selection of material, component part and electrode liquid receiving end protective layer do not reduce protection scope of the present invention.
It in Fig. 3, uses mold (8) for the plastic conduit of PVC, first electrode liquid receiving end and connecting wire is placed in properly
Position, inside injection filler material (7) low-temp reaction epoxy resin, epoxy resin after being fully cured together with mold for a period of time
(8) electrical isolation rod-shaped skeleton (3) of the pipeline being namely electrically insulated collectively as liquidometer.
In Fig. 3, if the mold (8) using dismountable PVC material smears release agent filling out as curable filler
Utensil is filled, first electrode liquid receiving end is placed in place with the conducting wire that is connected, inside injection filler material (7) low-temp reaction ring
Oxygen resin, epoxy resin internal shape for being formed an entirety after being fully cured for a period of time, due to epoxy resin with
PVC, PP material surface poor adhesion, it is easy to remove the integrally formed liquidometer that mold (8) form Fig. 4.It can also basis
In the shape for needing the shape of connector also to do progressive die tool (8), filler material forms the liquid of the integral type of band connection part after solidifying
Position meter, Fig. 5 be exactly include that connector connection (17) flange is integrally formed, electrode liquid receiving end exposed face and the rod-shaped skeleton that is electrically insulated
Flush.Liquidometer can be attached or be fixed to the corresponding connector of container (1) by connector (17).
All of above citing only describes one of implementation of the invention possibility, does not reduce protection model of the invention
It encloses.
Claims (10)
1. a kind of electrode-type liquid-level meter, insertion is filled in the container of fluid to be measured, is connect by fluid level controller and electrode control line
Conducting wire between line terminals is connected with the fluid level controller of control system, determines by the way that whether two level electrodes of measurement are connected
Fluid to be measured whether floods the two level electrodes so that it is determined that fluid to be measured liquid level, it is characterized in that: rod-shaped by being electrically insulated
Skeleton (3) and no less than two, insulate, are embedded in the rod-shaped skeletal internal of electrical isolation, from each other in electrical isolation baculum
Top of the trellis stretches out electrode control line connecting terminal (5) and exposes the liquid level of electrode liquid receiving end (6) in the rod-shaped skeleton lower part that is electrically insulated
Electrode (4) collectively constitutes electrode liquidometer.
2. electrode-type liquid-level meter according to claim 1, it is characterized in that electrode of the level electrode (4) at least by being sequentially connected
Control line connecting terminal (5), connecting wire (11), the functional sections such as electrode liquid receiving end (6) composition, each functional section is using different
Material production.
3. electrode-type liquid-level meter according to claim 1, it is characterized in that being wrapped in the production method for rod-shaped skeleton (3) that are electrically insulated
Include the filler material (7) that injection is electrically insulated after solidifying inside mold (8).
4. electrode-type liquid-level meter according to claim 2, it is characterized in that electrode liquid receiving end (6) material is anti-corrosion electric conducting material
Material.
5. electrode-type liquid-level meter according to claim 3, it is characterized in that the filler material of cured electrical isolation is resinae material
Material.
6. electrode-type liquid-level meter according to claim 3, it is characterized in that the filler material of cured electrical isolation is polyurethane.
7. electrode-type liquid-level meter according to claim 3, it is characterized in that the filler material of cured electrical isolation is silica gel.
8. electrode-type liquid-level meter according to claim 3, it is characterized in that mold (8) is plastic conduit.
9. electrode-type liquid-level meter according to claim 4, it is characterized in that corrosion-resistant conductive material is conductive inert material.
10. electrode-type liquid-level meter according to claim 4, it is characterized in that corrosion-resistant conductive material is metal material outer cladding
Conductive inert material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910605784.3A CN110160598A (en) | 2019-07-05 | 2019-07-05 | A kind of electrode-type liquid-level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910605784.3A CN110160598A (en) | 2019-07-05 | 2019-07-05 | A kind of electrode-type liquid-level meter |
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| Publication Number | Publication Date |
|---|---|
| CN110160598A true CN110160598A (en) | 2019-08-23 |
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| CN201910605784.3A Pending CN110160598A (en) | 2019-07-05 | 2019-07-05 | A kind of electrode-type liquid-level meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103872A (en) * | 2020-09-21 | 2020-12-18 | 上海铸奇环保科技有限公司 | Submerged probe protective sleeve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2212775Y (en) * | 1994-10-19 | 1995-11-15 | 山东省科学院能源研究所 | Bar-type liquid level and liquid temp transducer |
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| CN209927232U (en) * | 2019-07-05 | 2020-01-10 | 上海铸奇环保科技有限公司 | Electrode type liquid level meter |
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| CN2212775Y (en) * | 1994-10-19 | 1995-11-15 | 山东省科学院能源研究所 | Bar-type liquid level and liquid temp transducer |
| CN1595075A (en) * | 2004-06-18 | 2005-03-16 | 李虬 | Water level measuring apparatus |
| CN200974111Y (en) * | 2006-11-15 | 2007-11-14 | 上海宝钢设备检修有限公司 | Electrode type molten steel level stop |
| CN203657886U (en) * | 2013-12-11 | 2014-06-18 | 何杰恩 | Multi-point liquid level detection sensor |
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| CN112103872A (en) * | 2020-09-21 | 2020-12-18 | 上海铸奇环保科技有限公司 | Submerged probe protective sleeve |
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