CN205958068U - Liquid level detector - Google Patents
Liquid level detector Download PDFInfo
- Publication number
- CN205958068U CN205958068U CN201620730737.3U CN201620730737U CN205958068U CN 205958068 U CN205958068 U CN 205958068U CN 201620730737 U CN201620730737 U CN 201620730737U CN 205958068 U CN205958068 U CN 205958068U
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- China
- Prior art keywords
- sensing element
- liquid level
- parasitic capacitance
- detection device
- capacitance value
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The application discloses liquid level detector, it includes at least one sensing element to and the detecting element that inducts who links to each other with sensing element output, sensing element includes induced surface, induced surface set up with fluid contact or exchangeable position, sensing element forms a parasitic capacitance value with liquid, sensing element forms the 2nd parasitic capacitance value with the air, the detecting element that inducts judges the liquid level information that induced surface located according to the difference of a parasitic capacitance value and the 2nd parasitic capacitance value. Implement the technical scheme of the utility model, can know with the parasitic capacitance value of liquid formation and the different of parasitic capacitance value of sensing element and air formation whether the induced surface position has had liquid to cover through sensing element. Thereby this liquid detection device's simple structure can realize the precision measurement of liquid level.
Description
Technical field
The application is related to field of industrial measurement, especially relates to a kind of liquid level detection device.
Background technology
It is known that the mode of Level Detection mainly includes Purely mechanical Liquid level, float cooperation dry-reed tube switch group
Half mechanical liquid level becoming controls and ultrasonic reflection type Liquid level.As the term suggests Purely mechanical Liquid level mostly is lever,
Or lever derives mechanism.One end connects ball float, and the other end connects various forms of water valves.Ball float passes through liquid level rise buoyancy, control
Switch motion made by other end water valve processed.This mode implements relatively easy, but has that mechanical moving element is easily stuck, difficult cleaning
The shortcomings of with Liquid level low precision.It is embedded with Magnet, the drive magnetic that fluctuates of float in the float that half mechanical liquid level controls
Ferrum, with dry-reed tube switch have close, away from action, thus realizing switching signal control.This mode implements equally organic
Tool moving component is easily stuck, difficult cleaning and the shortcomings of Liquid level low precision.Ultrasonic reflection type Liquid level is typically by ultrasonic
Wave launcher and receptor composition, its principle is various, and general in order to measure, emitter sends signal and receptor receives signal
Time, then distance letter is converted to by computing, similar with radar.But this mode has implemented check frequency, has been provided with firmly
Property require and price higher the shortcomings of.
Content of the invention
The application provides a kind of improved liquid level detection device.
According to the application's in a first aspect, the application provides a kind of liquid level detection device, it includes at least one sensing unit
Part, and the detector unit of inducting being connected with the output of described sensing element；Described sensing element includes sensitive surface, described sensitive surface
Be arranged on contact with liquid or mutual inductance position, described sensing element and liquid form the first parasitic capacitance value, described sensing unit
Part forms the second parasitic capacitance value with air, and described detector unit of inducting is according to the first parasitic capacitance value and the second parasitic capacitance value
Difference judging the liquid level information at described sensitive surface.
In liquid level detection device of the present utility model, also include nonmetallic water tank, described sensing element is arranged on described non-
The outer wall of metal water tank.
In liquid level detection device of the present utility model, described detector unit of inducting is arranged on the outside of described sensing element,
The inner side of described sensing element is relative with the outer wall of described nonmetallic water tank.
In liquid level detection device of the present utility model, also include being electrically connected with described sensing element and detector unit of inducting
Power input line and output line.
In liquid level detection device of the present utility model, the shape of described sensing element is in cuboid, described cuboid bottom
Both sides are provided with a pair of mounting ear, and described sensitive surface is arranged on the top of described cuboid.
In liquid level detection device of the present utility model, the shape of described sensing element is elongated, the sensing unit of strip
One end of part is provided with installed part, and the other end of the sensing element of strip is provided with sensitive surface.
The beneficial effect of the application is：The sensitive surface of sensing element is placed on and to be contacted with liquid by this liquid-detecting
Position or the position with liquid mutual inductance, the parasitic capacitance value being formed with liquid by sensing element and sensing element are formed with air
Parasitic capacitance value difference may know that sensitive surface position whether had liquid cover.Thus the knot of this liquid-detecting
Structure is simple, enables the accurate measurement of liquid level.
Brief description
Fig. 1 is the structural representation of the liquid level detection device in an embodiment of the present utility model；
Fig. 2 is the structural representation of the sensing element in an embodiment of the present utility model；
Fig. 3 is the structural representation of the sensing element in another embodiment of the present utility model；
Wherein, 1, sensing element；2nd, induct detector unit；3rd, sensitive surface；4th, nonmetallic water tank；41st, outer wall；5th, power supply is defeated
Enter line；6th, output line；7th, mounting ear；8th, installed part.
Specific embodiment
Combine accompanying drawing below by specific embodiment the application is described in further detail.
Fig. 1 shows one of this utility model liquid level detection device, and the shape of product of this liquid level detection device is variable
Property high, can be customized accordingly according to the actual demand of user.
As shown in figure 1, this liquid level detection device includes at least one sensing element 1, and export phase with this sensing element 1
Detector unit 2 of inducting even；This sensing element 1 includes sensitive surface 3, this sensitive surface 3 be arranged on contact with liquid or mutual inductance position
Put, this sensing element 1 and liquid form the first parasitic capacitance value, this sensing element 1 and air form the second parasitic capacitance value, should
Detector unit of inducting 2 judges the liquid level at this sensitive surface 3 according to the difference of the first parasitic capacitance value and the second parasitic capacitance value
Information.
Further, above-mentioned liquid level detection device also includes nonmetallic water tank 4, and it is nonmetallic that this sensing element 1 is arranged on this
The outer wall 41 of water tank 4.And this detector unit 2 shell of inducting is arranged on the outside of this sensing element 1, the inner side of this sensing element 1 with
The outer wall 41 of this nonmetallic water tank 4 is relatively.
Further, above-mentioned liquid level detection device also includes being electrically connected with this sensing element 1 and detector unit 2 of inducting
Power input line 5 and output line 6.
It should be noted that the Mechanical Builds of above-mentioned sensing element 1 are freely, can make any according to specifically used requirement
Form.
As shown in Fig. 2 in one embodiment, the shape of this sensing element 1 is in preferably cuboid, this cuboid bottom two
Side is provided with a pair of mounting ear 7, and this sensitive surface 3 is arranged on the top of this cuboid.
As shown in figure 3, in one embodiment, the shape of this sensing element 1 is preferably elongated, the sensing unit of strip
One end of part 1 is provided with installed part 8, and the other end of the sensing element 1 of strip is provided with sensitive surface 3.
To sum up, this liquid level detection device mechanical motion structure, will not be stuck, no wearing components, and working life is long.And should
The structure of liquid level detection device is simple, and cost substantially reduces.During installation, water tank need not make any change, only need to fill sensor patch
In tank outer wall 41, you can use；And buoyancy need not be considered, and flexible for installation, can according to requirements install in any form.
The cleaning of water tank is very convenient, and no breaks off secondary pollution source.The Liquid level of this liquid level detection device is accurate, can reach+-
1mm.The Mechanical Builds of sensing unit freely, can make any form according to specifically used requirement.In addition, in the inspection of multiple spot liquid level
Survey aspect, advantage highlights, and easily realizes.
Above content is further description the application made with reference to specific embodiment it is impossible to assert this Shen
Being embodied as please is confined to these explanations.For the application person of an ordinary skill in the technical field, do not taking off
On the premise of the present application design, some simple deduction or replace can also be made.
Claims (6)
1. a kind of liquid level detection device exports it is characterised in that including at least one sensing element, and with described sensing element
Connected detector unit of inducting；Described sensing element includes sensitive surface, and described sensitive surface is arranged on and is contacted with liquid or mutual inductance
Position, described sensing element and liquid form the first parasitic capacitance value, and described sensing element forms the second parasitic capacitance with air
Value, described detector unit of inducting judges at described sensitive surface according to the difference of the first parasitic capacitance value and the second parasitic capacitance value
Liquid level information.
2., it is characterised in that also including nonmetallic water tank, described sensing is first for liquid level detection device according to claim 1
Part is arranged on the outer wall of described nonmetallic water tank.
3. liquid level detection device according to claim 2 is it is characterised in that described detector unit of inducting is arranged on described sense
Answer the outside of element, the inner side of described sensing element is relative with the outer wall of described nonmetallic water tank.
4. liquid level detection device according to claim 1 is it is characterised in that also include and described sensing element and inspection of inducting
Survey power input line and the output line that unit is electrically connected with.
5. the liquid level detection device according to any one of Claims 1-4 is it is characterised in that the shape of described sensing element
In cuboid, described cuboid two bottom sides are provided with a pair of mounting ear, and described sensitive surface is arranged on the top of described cuboid.
6. the liquid level detection device according to any one of Claims 1-4 is it is characterised in that the shape of described sensing element
Elongated, one end of the sensing element of strip is provided with installed part, the other end setting thoughts of the sensing element of strip
Answer face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620730737.3U CN205958068U (en) | 2016-07-12 | 2016-07-12 | Liquid level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620730737.3U CN205958068U (en) | 2016-07-12 | 2016-07-12 | Liquid level detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205958068U true CN205958068U (en) | 2017-02-15 |
Family
ID=57971226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620730737.3U Expired - Fee Related CN205958068U (en) | 2016-07-12 | 2016-07-12 | Liquid level detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205958068U (en) |
-
2016
- 2016-07-12 CN CN201620730737.3U patent/CN205958068U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518100 Guangdong Shenzhen Baoan District Shiyan street, AI Qun Road, rich industrial park, Hui Fu Building 304 Patentee after: Shenzhen Zhanhua Technology Co., Ltd. Address before: 518000 -08, 6 B, block 196, Tong Tou Road, Shixin community, Shiyan street, Baoan District, Shenzhen, Guangdong. Patentee before: Shenzhen winner Technology Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170215 Termination date: 20190712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |