CN206038103U - Electric capacity level sensor - Google Patents
Electric capacity level sensor Download PDFInfo
- Publication number
- CN206038103U CN206038103U CN201620933620.5U CN201620933620U CN206038103U CN 206038103 U CN206038103 U CN 206038103U CN 201620933620 U CN201620933620 U CN 201620933620U CN 206038103 U CN206038103 U CN 206038103U
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- CN
- China
- Prior art keywords
- outer tube
- level sensor
- liquid level
- interior
- capacitive liquid
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses an electric capacity level sensor, including the outer tube, establish the interior probe in the outer tube to and install the sensor head at the outer tube top, and install the data acquisition and processing circuit of being connected with interior probe in sensor head's the cavity, outer tube and the coaxial setting of interior probe, and form measuring chamber between the two, still be equipped with the logical groove that is used for being surveyed liquid entering measuring chamber on the outer tube, outer tube and interior probe with electric capacity level sensor during the use dip by in the survey liquid, are surveyed the logical groove of fluid passage and can pass in and out the measuring chamber between outer tube and the interior probe fast for the height of liquid and highly keeping fast all the time unanimously of the outer liquid of measuring chamber in the measuring chamber, consequently the utility model provides an electric capacity level sensor, measurement liquid level that can be accurate and quick.
Description
Technical field
The utility model is related to level gauging field, more particularly to a kind of capacitive liquid level sensor.
Background technology
Capacitive liquid level sensor is that measuring the device of liquid level, which has, and sensitivity is high, response speed according to capacitance principle
Hurry up, simple structure and the advantages of strong adaptability, be widely used in every profession and trade.
Two electrodes of two inner and outer pipes of capacitive liquid level sensor equivalent to capacitor, into the liquid between inner and outer pipes
Then equivalent to the medium between two-plate, when the height change of fluid to be measured submergence measuring electrode, cause its capacitance variations, enter
And the change of the medium level is converted into into standard electric signal and is shown.
Current capacitive liquid level sensor, fluid to be measured are passed in and out between inner and outer pipes by the inlet opening of outer pipe bottom
Measurement chamber, liquid in-out speed are slow, and especially when the higher liquid of some concentration is measured, inlet opening is easily blocked, liquid it is easy to hang
In measurement cavity wall, the height for measuring intracavity liquid is inconsistent with liquid height outside measurement chamber, cause measuring speed slowly, accuracy
It is low.
Therefore how to enable capacitive liquid level sensor accurately and quickly measure liquid level to be that those skilled in the art are current
The technical issues that need to address.
Utility model content
The purpose of this utility model is to provide a kind of capacitive liquid level sensor so as to can accurately and quickly measure liquid
Position.
For solving above-mentioned technical problem, the utility model provides a kind of capacitive liquid level sensor, including outer tube, described in being located at
Interior rapier in outer tube, and the sensor head at the top of the outer tube, be provided with the cavity of the sensor head with
The data acquisition processing circuit of the interior rapier connection, the outer tube and the interior rapier are coaxially disposed, and are formed between the two
Measurement chamber, is additionally provided with the groove for passing in and out the measurement chamber for fluid to be measured on the outer tube.
Preferably, the groove is the strip extended along the outer tube length direction.
Preferably, the groove is the strip on the top for extending to the outer tube from the bottom of the outer tube.
Preferably, the outer tube is provided with multiple grooves, length direction etc. of multiple grooves along the outer tube
Apart from interval setting.
Preferably, the sensor head includes pedestal, housing, end cap and the insulating bushing installed in the base central,
The top of the outer tube is welded on the insulating bushing.
Preferably, the pedestal is provided with the passage connected with the measurement chamber.
Preferably, the pedestal is provided with installation screw thread, and the installation screw thread is located at the lower section of the passage.
The capacitive liquid level sensor that the utility model is provided, including outer tube, the interior rapier being located in outer tube, and is arranged on
Sensor head at the top of outer tube, is provided with the data acquisition processing circuit being connected with interior rapier, outer tube in the cavity of sensor head
Be coaxially disposed with interior rapier, and form measurement chamber between the two, be additionally provided with outer tube and the logical of measurement chamber entered for fluid to be measured
Groove.Two pole plates of outer tube and interior rapier equivalent to capacitor, into the liquid for entering measurement chamber between outer tube and interior rapier
Equivalent to the medium between two-plate, when the height change of fluid to be measured, the height for measuring intracavity liquid also synchronously changes, and enters
And cause the change of electric capacity, then the change of fluid to be measured height just can be converted into by standard electric by data acquisition processing circuit
Stream signal simultaneously shows；The outer tube of capacitive liquid level sensor and interior rapier are immersed in fluid to be measured during use, fluid to be measured
Measurement chamber between outer tube and interior rapier can quickly be passed in and out by groove so that outside the height of measurement intracavity liquid and measurement chamber
The height of liquid quickly can be consistent all the time, therefore the capacitive liquid level sensor that the utility model is provided, can be accurately and fast
The measurement liquid level of speed.
Description of the drawings
Fig. 1 is that a kind of decomposing state of specific embodiment of capacitive liquid level sensor provided by the utility model is illustrated
Figure；
Fig. 2 is a kind of structural representation of specific embodiment of capacitive liquid level sensor provided by the utility model；
Sectional views of the Fig. 3 for Fig. 2.
Specific embodiment
Core of the present utility model is to provide a kind of capacitive liquid level sensor so as to can accurately and quickly measure liquid
Position.
In order that those skilled in the art more fully understand the utility model scheme, below in conjunction with the accompanying drawings and it is embodied as
The utility model is described in further detail for mode.
Fig. 1 to Fig. 3 is refer to, Fig. 1 is a kind of specific embodiment party of capacitive liquid level sensor provided by the utility model
The decomposing state schematic diagram of formula；Fig. 2 is a kind of specific embodiment of capacitive liquid level sensor provided by the utility model
Structural representation；Sectional views of the Fig. 3 for Fig. 2.
The capacitive liquid level sensor that the utility model specific embodiment is provided, including outer tube 1, in being located in outer tube 1
Rapier 2, and the sensor head 3 at the top of outer tube 1, are provided with the number being connected with interior rapier 2 in the cavity of sensor head 3
According to acquisition process circuit, outer tube 1 and interior rapier 2 are coaxially disposed, and form measurement chamber between the two, be additionally provided with outer tube 1 for
Fluid to be measured enters the groove 4 in measurement chamber.
Outer tube 1 and interior rapier 2 are measured into entering between outer tube 1 and interior rapier 2 equivalent to two pole plates of capacitor
, equivalent to the medium between two-plate, when the height change of fluid to be measured, the height for measuring intracavity liquid is also same for the liquid in chamber
Step change, and then cause the capacitance variations of capacitor, then just can be by fluid to be measured height by data acquisition processing circuit
Change is converted into standard electric signal and shows.
The outer tube 1 and interior rapier 2 of capacitive liquid level sensor are immersed in fluid to be measured during use, compared with through hole, groove 4
It is not easily blocked, and fluid to be measured can quickly passes in and out the measurement chamber between outer tube 1 and interior rapier 2 by groove 4 so that measurement chamber
The height of interior liquid quickly can be consistent all the time with the height of liquid outside measurement chamber, therefore the capacitive liquid that the utility model is provided
Level sensor, can accurately and quickly measure liquid level.
Wherein, two pole plates of outer tube 1 and interior rapier 2 equivalent to capacitor, then outer tube 1 and interior rapier 2 are conduction material
Material is made, and generally adopts rapier in metal outer pipe and metal, and specifically, outer tube 1 and interior rapier 2 can adopt stainless steel material
Make, in stainless steel outer tube and stainless steel rapier can intensity it is high, electric conductivity is good, corrosion-resistant so that capacitive liquid level sensor
The measurement of various medium liquid levels can be suitable for.
The capacitive liquid level sensor that the utility model specific embodiment is provided, the concrete set-up mode of groove 4 have various,
For ease of processing, groove 4 can be the strip extended along 1 length direction of outer tube.For enabling fluid to be measured to enter more quickly
Go out to measure chamber, prevent groove 4 to be blocked, groove 4 can extend to the top of outer tube 1 from the bottom of outer tube 1；Can also be in outer tube
1 is provided with multiple grooves 4, is the intensity for ensureing outer tube 1, and multiple grooves 4 can be set along the length direction equidistant intervals of outer tube 1
Put, it is also possible to enable fluid to be measured quickly to pass in and out measurement chamber, while ensureing that groove 4 is not plugged up.
The utility model is to the length of groove 4, size, number and set-up mode and is not specifically limited, can basis
The size of capacitive liquid level sensor is adjusted, as long as guaranteeing quickly and accurately to measure liquid level, it is ensured that the intensity of outer tube 1,
Within protection domain of the present utility model.
When capacitive liquid level sensor is used, outer tube 1 and interior rapier 2 are stretched in fluid to be measured, sensor head 3 be usually provided at by
Survey outside liquid container, sensor head 3 is generally made up of pedestal 7, housing 9, end cap 10 and insulating bushing 8 etc., pedestal 7, housing 9
The cavity for placing data acquisition processing circuit is formed with 10 grade of end cap, 2 top of interior rapier is connected with data acquisition processing circuit
Connect, pedestal 7, housing 9 are typically constructed of metal, insulating bushing 8 is arranged on 7 center of pedestal, prevents outer tube 1 from directly connecing with pedestal 7
Touch, increase security.
On the basis of above-mentioned each specific embodiment, sensor head 3 is arranged on the top of outer tube 1, is to ensure that connection is steady
It is fixed, the top of outer tube 1 can be welded on insulating bushing 8, firm welding reliability, can effectively prevent outer tube 1 from coming off, it is ensured that
The structural stability of capacitive liquid level sensor.Can also be from other connected modes such as threaded connections, also of the present utility model
Within protection domain.
On the basis of any of the above-described specific embodiment, it is to ensure that the air pressure in measurement chamber is kept with external pressure all the time
Unanimously, it is ensured that accuracy of measurement, can be to be provided with the passage 5 connected with measurement chamber on pedestal 7, sensor is typically mounted on
On fluid to be measured container, passage 5 is located on pedestal 7, can effectively prevent liquid blocking passage 5, it is ensured that measurement is accurate
Property.
Passage 5 connect with measurement chamber by being located at the breather line inside pedestal 7, and for convenience of processing, passage 5 can be with
It is the clear opening through pedestal 7 and outer tube 1；In the case where 1 intensity of pedestal 7 and outer tube is ensured, can be machined with pedestal 7 many
Individual passage 5.
In addition, for convenience of the installation of capacitive liquid level sensor, screw thread 6, sensor can be installed to process on pedestal 7
3 can be connected with fluid to be measured container threads, stable connection reliability；Specifically, screw thread 6 can will be installed and is located at passage 5
Lower section, so using capacitive liquid level sensor measure liquid level when, passage 5 is always positioned at outside fluid to be measured container, keep in
Outer air pressure is consistent, and passage 5 is not directly contacted with container, is difficult to be blocked by dust.
It is of course also possible to use other connected modes, mounting flange is such as set on pedestal 7, capacitive liquid level sensor with
Fluid to be measured vessel flange connection etc., within protection domain of the present utility model.
Above capacitive liquid level sensor provided by the utility model is described in detail.It is used herein specifically
Individual example is set forth to principle of the present utility model and embodiment, and the explanation of above example is only intended to help and understands this
The method and its core concept of utility model.It should be pointed out that for those skilled in the art, without departing from
On the premise of the utility model principle, some improvement and modification can also be carried out to the utility model, these improve and modify
Fall in the utility model scope of the claims.
Claims (7)
1. a kind of capacitive liquid level sensor, it is characterised in that including outer tube (1), the interior rapier (2) being located in the outer tube (1),
And the sensor head (3) being arranged at the top of the outer tube (1), it is provided with the cavity of sensor head (3) interior with described
The data acquisition processing circuit that rapier (2) connects, outer tube (1) and the interior rapier (2) are coaxially disposed, and shape between the two
Into measurement chamber, the groove (4) for passing in and out the measurement chamber for fluid to be measured on outer tube (1), is additionally provided with.
2. capacitive liquid level sensor according to claim 1, it is characterised in that groove (4) are along the outer tube (1)
The strip that length direction extends.
3. capacitive liquid level sensor according to claim 2, it is characterised in that groove (4) are from the outer tube (1)
Bottom extend to the outer tube (1) top strip.
4. capacitive liquid level sensor according to claim 2, it is characterised in that outer tube (1) is provided with multiple described
Groove (4), multiple groove (4) are equidistantly spaced along the length direction of the outer tube (1).
5. the capacitive liquid level sensor according to Claims 1-4 any one, it is characterised in that sensor head (3)
Including pedestal (7), housing (9), end cap (10) and the insulating bushing (8) installed in the pedestal (7) center, outer tube (1)
Top be welded on the insulating bushing (8).
6. capacitive liquid level sensor according to claim 5, it is characterised in that the pedestal is provided with and the measurement chamber
The passage (5) of connection.
7. capacitive liquid level sensor according to claim 6, it is characterised in that the pedestal is provided with installation screw thread (6),
It is described that the lower section that screw thread (6) is located at the passage (5) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620933620.5U CN206038103U (en) | 2016-08-24 | 2016-08-24 | Electric capacity level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620933620.5U CN206038103U (en) | 2016-08-24 | 2016-08-24 | Electric capacity level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206038103U true CN206038103U (en) | 2017-03-22 |
Family
ID=58303286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620933620.5U Active CN206038103U (en) | 2016-08-24 | 2016-08-24 | Electric capacity level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206038103U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917743A (en) * | 2017-12-21 | 2018-04-17 | 交通运输部天津水运工程科学研究所 | A kind of tantalum wire tolerance formula Wave Sensor device |
| CN112323048A (en) * | 2019-08-05 | 2021-02-05 | Asm Ip私人控股有限公司 | Level sensor for chemical source container |
| CN114001797A (en) * | 2021-10-25 | 2022-02-01 | 中航通飞华南飞机工业有限公司 | Water tank water amount measuring system and method based on large fire-fighting aircraft |
-
2016
- 2016-08-24 CN CN201620933620.5U patent/CN206038103U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917743A (en) * | 2017-12-21 | 2018-04-17 | 交通运输部天津水运工程科学研究所 | A kind of tantalum wire tolerance formula Wave Sensor device |
| CN112323048A (en) * | 2019-08-05 | 2021-02-05 | Asm Ip私人控股有限公司 | Level sensor for chemical source container |
| CN112323048B (en) * | 2019-08-05 | 2024-02-09 | Asm Ip私人控股有限公司 | Liquid level sensor for chemical source container |
| CN114001797A (en) * | 2021-10-25 | 2022-02-01 | 中航通飞华南飞机工业有限公司 | Water tank water amount measuring system and method based on large fire-fighting aircraft |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |