CN208505420U - Capacitance level transducer - Google Patents
Capacitance level transducer Download PDFInfo
- Publication number
- CN208505420U CN208505420U CN201821129312.2U CN201821129312U CN208505420U CN 208505420 U CN208505420 U CN 208505420U CN 201821129312 U CN201821129312 U CN 201821129312U CN 208505420 U CN208505420 U CN 208505420U
- Authority
- CN
- China
- Prior art keywords
- electrode
- sleeve
- level transducer
- capacitance level
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to a kind of capacitance level transducers, comprising: detection device, first electrode, second electrode and sleeve electrode.Detection device is electrically connected first electrode, second electrode and sleeve electrode, the inner wall interval of first electrode and sleeve electrode is arranged to form first capacitor, the inner wall interval of second electrode and sleeve electrode is arranged to form the second capacitor, and first electrode and second electrode interval are arranged to form third capacitor.Based on this, it even if small variation occurs for liquid level, can also be reflected in capacitance, keep the detection accuracy of liquid level sensor higher.
Description
Technical field
The utility model relates to instrument fields, more particularly to a kind of capacitance level transducer.
Background technique
Liquid level sensor is a kind of pressure sensor for measuring liquid level, can be divided into from working principle and measurement method non-
Often more type.Wherein, because principle is simple, the more low advantage of component costs is widely used capacitance level transducer
In industries such as petroleum, chemical industry, metallurgy, electric power, papermaking, pharmacy, liquid level real-time detection is carried out in large scale equipment.
But in fuel tank, the solar water heater water tank small field that capacitance level transducer is applied to such as automobile
Jing Shi, inventors have found that the detection accuracy of conventional condenser liquid level sensor is lower, cannot accurately real-time detection to liquid level
Variation.
Utility model content
Based on this, it is necessary to for the lower problem of conventional condenser liquid level sensor detection accuracy, provide a kind of capacitor
Formula liquid level sensor.
The utility model embodiment provides a kind of capacitance level transducer, comprising: detection device, first electrode, second
Electrode and sleeve electrode,
Detection device is electrically connected first electrode, second electrode and sleeve electrode, first electrode and sleeve electrode it is interior
Wall interval is arranged to form first capacitor, and the inner wall interval of second electrode and sleeve electrode is arranged to form the second capacitor, first electrode
It is arranged to form third capacitor with second electrode interval.
It in one of the embodiments, further include hollow columnar magnet, sleeve electrode is magnetic conduction electrode, hollow columnar magnet
First end and sleeve electrode be socketed, the second end of hollow columnar magnet is hanging.
In one of the embodiments, further include circuit box, the first opening is opened up on circuit box, circuit box is opened by first
The second end of mouth and hollow columnar magnet is clamped, and detection device is arranged inside circuit box, is offered on the side wall of sleeve electrode
Airflow hole.
It in one of the embodiments, further include electrode mounting plate,
The connection of the inner wall of electrode mounting plate and circuit box, first electrode and second electrode pass through the first opening, interval setting
In the one side of electrode mounting plate；Through-hole is offered on electrode mounting plate；Detection device passes through through-hole by conducting wire, respectively with the
One electrode and second electrode electrical connection.
The quantity of airflow hole is multiple in one of the embodiments,.
Detection device includes liquid level acquisition module and communication module, liquid level acquisition module point in one of the embodiments,
Not electricity Lian Jie first electrode, second electrode and sleeve electrode, output liquid level acquires signal to communication module, and communication module is by liquid
Position acquisition Signal coding simultaneously exports direct current carrier signal.
Circuit output mouth is offered on circuit box in one of the embodiments, the output lead of communication module passes through line
Road delivery outlet exports direct current carrier signal.
Circuit box includes box body and box cover in one of the embodiments, and the first opening and circuit output mouth are provided with box
On body, the second opening is also opened up on box body, box cover is arranged in the second opening.
The outside of first electrode and second electrode is enclosed with insulating layer in one of the embodiments,.
First electrode and second electrode are rodlike in one of the embodiments,.
Above-mentioned capacitance level transducer is made by the way that first electrode and second electrode to be arranged at intervals in sleeve electrode
First electrode, second electrode are also spaced setting with the inner wall of sleeve electrode, form three capacitors, and minor change occurs for liquid level
It can be reflected in capacitance, keep the detection accuracy of liquid level sensor higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of capacitance level transducer in an embodiment；
Fig. 2 is the cross-sectional view of capacitance level transducer shown in FIG. 1；
Fig. 3 is the structural schematic diagram of capacitance level transducer in another embodiment；
Fig. 4 is the cross-sectional view of capacitance level transducer shown in Fig. 3；
Fig. 5 is the structural schematic diagram of capacitance level transducer in another embodiment；
Fig. 6 is the cross-sectional view of capacitance level transducer shown in fig. 5；
Fig. 7 is the enlarged diagram of the circle part A of capacitance level transducer in Fig. 6.
Specific embodiment
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can come in many different forms in fact
It is existing, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes public affairs to the utility model
It is more thorough and comprehensive to open content.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element and it is in combination be integrated, or may be simultaneously present centering elements.Term as used herein " installation ", " one
End ", " other end " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more related listed items.
As shown in Figure 1, 2, the utility model embodiment provides a kind of capacitance level transducer, comprising: detection device 10,
First electrode 20, second electrode 30 and sleeve electrode 40.
Detection device 10 is electrically connected first electrode 20, second electrode 30 and sleeve electrode 40, first electrode 20 and set
Cylinder electrode 40 inner wall interval is arranged to form first capacitor, and the inner wall interval of second electrode 30 and sleeve electrode 40 is arranged to form the
Two capacitors, first electrode 20 and the setting of the interval of second electrode 30 form third capacitor.
Specifically, first electrode 20 and second electrode 30 are arranged in sleeve electrode 40, first electrode 20 and second electrode
30 interval settings, first electrode 20, second electrode 30 are arranged with the inner wall interval of sleeve electrode 40 respectively, and detection device 10 is distinguished
It is electrically connected first electrode 20, second electrode 30 and sleeve electrode 40.Because of first electrode 20, second electrode 30 and sleeve electrode 40
It is not in contact, they can form three capacitors between any two.When detecting liquid level, by first electrode 20,30 and of second electrode
One end of sleeve electrode 40 is put into liquid container, if liquid level changes, the capacitance of three capacitors can change, therefore only
Want liquid level that small variation occurs, the variation for the total capacitance value that detection device 10 detects also can be it is obvious that mention the present embodiment
The detection accuracy of capacitance level transducer out is higher.
When in the heating water tank that existing capacitance level transducer is used for the equipment such as solar water heater, electric heater
When, electrode surface assembles scaling, and the testing result of liquid level sensor is caused error occur.In one embodiment, such as Fig. 3,4
It is shown, it further include hollow columnar magnet 50.Sleeve electrode 40 is magnetic conduction electrode, first end and the sleeve electricity of hollow columnar magnet 50
Pole 40 is socketed, and the second end of hollow columnar magnet 50 is hanging.Specifically, sleeve electrode 40 is magnetic conduction electrode, magnetic conduction electrode is in
Empty columnar magnet 50 is socketed, and can be magnetized by hollow columnar magnet 50, so that the water inside sleeve electrode 40 is also magnetized, is not easy
Crystallization forms scale in first electrode 20 and second electrode 30.Wherein, sleeve electrode 40 can select not only magnetic conduction but also conductive material
Material, for example, magnetic conduction steel.
It in one embodiment, as shown in Figure 5,6, further include circuit box 60.The first opening 61 is opened up on circuit box 60, electricity
Road box 60 is clamped by the first opening 61 and the second end of hollow columnar magnet 50, and detection device 10 is arranged in circuit box 60
Portion offers airflow hole 41 on the side wall of sleeve electrode 40.Circuit box 60 for placing detection device 10, prevent from being exposed to by
It surveys above liquid, make moist or is corroded, circuit therein is made to break down.Airflow hole 41 is provided with the side wall of sleeve electrode 40
On, it opens up height and is higher than in fluid to be measured highest liquid level, for the sky in sleeve electrode 40 to be discharged when liquid level increases
Gas keeps 40 inner and outer air pressure of sleeve electrode identical.Further, in order to preferably keep the air pressure inside and outside sleeve electrode 40 always,
The quantity of airflow hole 41 can be multiple.
In one embodiment, as shown in fig. 6, further including electrode mounting plate 70.Electrode mounting plate 70 and circuit box 60
Inner wall connection, first electrode 20 and second electrode 30 are arranged at intervals in the one side of electrode mounting plate 70 by the first opening 61.
Through-hole 71 is offered on electrode mounting plate 70.Detection device 10 passes through through-hole 71 by conducting wire, respectively with first electrode 20 and the
The electrical connection of two electrodes 30.
Specifically, electrode mounting plate 70 is connect with 60 inner wall of circuit box, make to form upper plenum and lower sky in 60 shape of circuit box
Chamber, upper plenum are closed cavity, and detection device 10 is arranged in upper plenum；Lower cavity is cavity open at one end, and lower cavity is logical
The first opening 61 is crossed to be connected to the hollow cavity of hollow columnar magnet 50.It is spaced on the face that electrode mounting plate 70 is contacted with lower cavity
First electrode 20 and second electrode 30 are set, and first electrode 20 and second electrode 30 pass through the first opening 61 and hollow columnar magnet
50, in the hollow cavity for extending to sleeve electrode 40.Through-hole 71, the detection conducting wire of detection device 10 are provided on electrode mounting plate 70
By through-hole 71, it is electrically connected respectively with first electrode 20 and second electrode 30.Electrode installation partition is for being arranged first electrode 20
With second electrode 30, and keep apart detection device 10 with fluid to be measured, to make detection device 10 from inspection
Survey the influence of environment, the working life of extension detection device 10.Wherein, the quantity of through-hole 71 can be one, be also possible to two
It is a.
In one embodiment, as shown in fig. 6, detection device 10 includes liquid level acquisition module 11 and communication module 12, liquid
Position acquisition module 11 is electrically connected first electrode 20, second electrode 30 and sleeve electrode 40, and output liquid level acquisition signal is extremely
Liquid level is acquired Signal coding and exports direct current carrier signal by communication module 12, communication module 12.In one of the embodiments,
Liquid level acquisition module 11 includes the first pcb board and the liquid level information Acquisition Circuit being arranged on the first pcb board, liquid level information acquisition
Two collection terminals of circuit are electrically connected first electrode 20, second electrode 30, and output end is electrically connected with communication module 12.Sleeve
Electrode 40 is electrically connected by the ground terminal of conducting wire and liquid level Acquisition Circuit along hollow columnar magnet 50 and the setting of 60 inner wall of circuit box
It connects.In one embodiment, communication module 12 includes the second pcb board and the telecommunication circuit being arranged on the second pcb board, communication electricity
The output end of the input terminal electrical connection liquid level information Acquisition Circuit on road.
In one embodiment, as shown in figure 5, offering circuit output mouth 62 on circuit box 60, communication module 12 it is defeated
Conducting wire exports direct current carrier signal by circuit output mouth 62 out.
In one embodiment, as shown in Figure 5,6, circuit box 60 includes box body 63 and box cover 64, the first opening 61 and line
Road delivery outlet 62 is provided on box body 63, the second opening 631 is also opened up on box body 63, the setting of box cover 64 is at the second opening 631.
Box cover 64 is detachably connected with box body 63, and when the testing result that detection device 10 exports often error occurs, service personnel can
To open the lid 64 by the 631 maintenance intracorporal detection device 10 of box of the second opening.
When fluid to be measured conduction, in one embodiment, the outside of first electrode 20 and second electrode 30 is enclosed with absolutely
Edge layer.It prevents because of fluid to be measured conduction, caused liquid container electrification generates electric shock or electric leakage accident.
In one embodiment, first electrode 20 and second electrode 30 are rodlike.It is beneficial to probe into liquid level, electricity
Hold the linear relationship that variation changes with liquid level to become apparent from.
In one embodiment, as shown in fig. 7, the hanging one end of first electrode 20, second electrode 30 it is hanging one end it is equal
It is flushed with the free end of sleeve electrode 40.When detection, first electrode, second electrode and sleeve electrode form the length phase of capacitor
Together, three capacitors are cooperatively formed, liquid level can be preferably embodied.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of capacitance level transducer characterized by comprising detection device, first electrode, second electrode and sleeve
Electrode,
The detection device is electrically connected the first electrode, second electrode and the sleeve electrode, the first electrode with
The inner wall interval of the sleeve electrode is arranged to form first capacitor, and the second electrode and the inner wall interval of the sleeve electrode are set
It sets to form the second capacitor, the first electrode and second electrode interval are arranged to form third capacitor.
2. capacitance level transducer according to claim 1, which is characterized in that it further include hollow columnar magnet, it is described
Sleeve electrode is magnetic conduction electrode, and the first end of the hollow columnar magnet and the sleeve electrode are socketed, the hollow columnar magnetic
The second end of iron is hanging.
3. capacitance level transducer according to claim 2, which is characterized in that it further include circuit box, the circuit box
On open up the first opening, the circuit box is clamped by first opening and the second end of the hollow columnar magnet, described
Detection device is arranged inside the circuit box, offers airflow hole on the side wall of the sleeve electrode.
4. capacitance level transducer according to claim 3, which is characterized in that it further include electrode mounting plate,
The electrode mounting plate is connect with the inner wall of the circuit box, and the first electrode and the second electrode pass through described the
One opening, is arranged at intervals in the one side of the electrode mounting plate；Through-hole is offered on the electrode mounting plate；The detection dress
It sets and the through-hole is passed through by conducting wire, be electrically connected respectively with the first electrode and the second electrode.
5. capacitance level transducer according to claim 3 or 4, which is characterized in that the quantity of the airflow hole is more
It is a.
6. capacitance level transducer according to claim 4, which is characterized in that the detection device includes liquid level acquisition
Module and communication module, the liquid level acquisition module is electrically connected the first electrode, second electrode and sleeve electrode, defeated
Liquid level acquires signal to the communication module out, and liquid level is acquired Signal coding and exports direct current carrier by the communication module to be believed
Number.
7. capacitance level transducer according to claim 6, which is characterized in that it is defeated to offer route on the circuit box
The output lead of outlet, the communication module exports the direct current carrier signal by the circuit output mouth.
8. capacitance level transducer according to claim 7, which is characterized in that the circuit box includes box body and box
Lid, first opening and the circuit output mouth are provided on the box body, and the second opening is also opened up on the box body, described
Box cover is arranged in second opening.
9. according to capacitance level transducer described in claim 6 to 8 any one, which is characterized in that the first electrode
Insulating layer is enclosed with the outside of the second electrode.
10. capacitance level transducer according to claim 9, which is characterized in that the first electrode and described second
Electrode is rodlike.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821129312.2U CN208505420U (en) | 2018-07-16 | 2018-07-16 | Capacitance level transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821129312.2U CN208505420U (en) | 2018-07-16 | 2018-07-16 | Capacitance level transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208505420U true CN208505420U (en) | 2019-02-15 |
Family
ID=65291006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821129312.2U Active CN208505420U (en) | 2018-07-16 | 2018-07-16 | Capacitance level transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208505420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324623A (en) * | 2021-06-23 | 2021-08-31 | 北京锐达仪表有限公司 | Capacitance guided wave magnetic composite liquid level meter and measuring device |
-
2018
- 2018-07-16 CN CN201821129312.2U patent/CN208505420U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324623A (en) * | 2021-06-23 | 2021-08-31 | 北京锐达仪表有限公司 | Capacitance guided wave magnetic composite liquid level meter and measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8046194B2 (en) | Method for predictive maintenance and/or method for determining electrical conductivity in a magneto-inductive flow-measuring device | |
| US6938478B2 (en) | Impedance level meter for liquids in tanks | |
| US5051921A (en) | Method and apparatus for detecting liquid composition and actual liquid level | |
| US3753092A (en) | Liquid testing device for measuring changes in dielectric properties | |
| CN207976198U (en) | A kind of capacitance type liquid level detection device | |
| CN203657886U (en) | Multi-point liquid level detection sensor | |
| CN202548088U (en) | Method for detecting moisture in oil and device for method | |
| CN204758082U (en) | Intelligent drinking cup of non -contact level sensor and applied this sensor | |
| CN105996657B (en) | Intelligent STRAW CUP | |
| TW202107046A (en) | Dual polarity mutual capacitive liquid sensing | |
| CN208505420U (en) | Capacitance level transducer | |
| CN108871498A (en) | Condenser type adaptive universal liquid level emasuring device and method | |
| CN110231071A (en) | A kind of liquid level emasuring device based on capacitance type sensor | |
| CN102980630A (en) | Intelligent digital capacitive liquid level sensor | |
| US20150323372A1 (en) | Temperature Compensated Transmission Line Based Liquid Level Sensing Apparatus and Method | |
| CN101393461A (en) | Radio frequency admittance admittance level controller | |
| CN205580564U (en) | Magnetic force level detection device | |
| CN109870214A (en) | Water detection structure and household appliance | |
| CN106841317B (en) | Device for measuring conductivity of polluted soil and monitoring change of electrical parameters in electroosmosis process in real time | |
| CN211262379U (en) | Water level sensor | |
| CN107449489A (en) | A kind of fuel level sensor and oil level measuring device for vehicle | |
| CN209485490U (en) | Liquid level detection device | |
| CN207263261U (en) | A kind of fuel level sensor and oil level measuring device for vehicle | |
| DE59705693D1 (en) | DEVICE FOR DETECTING AND LOCATING LEAKAGE LIQUIDS ON SEALING SYSTEMS | |
| CN105371922B (en) | A kind of magnetic force Level measurement device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |