CN2519903Y - Liquid level sensor - Google Patents
Liquid level sensor Download PDFInfo
- Publication number
- CN2519903Y CN2519903Y CN 01279498 CN01279498U CN2519903Y CN 2519903 Y CN2519903 Y CN 2519903Y CN 01279498 CN01279498 CN 01279498 CN 01279498 U CN01279498 U CN 01279498U CN 2519903 Y CN2519903 Y CN 2519903Y
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- CN
- China
- Prior art keywords
- liquid level
- electrode
- liquid
- level sensor
- exploring electrode
- 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.)
- Expired - Fee Related
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model belongs to liquid level measurement and control fields, and provides a liquid level sensor which is suitable for inserting upwards from the lower of containers, which is characterized in that the end of the metal detection electrode is designed to be a bending structure which is higher than the highest liquid level.
Description
The utility model belongs to the liquid level controlling field.
The existing now technology of utilizing the electric conductivity detection of liquid level of conducting liquid, normally the height that exploring electrode comes detection of liquid level is set at differing heights, as application number is the content of describing in the Chinese patent " liquid level controlling device and manufacture method thereof " of CN99124984: detecting electrode and temperature element are housed in the probing shell, link to each other with master control system by multi-core socket, probe inserts liquid container from the top of liquid container, height that can detection of liquid level.
But above-mentioned liquid level sensor only is suitable for from liquid container top the application scenario of insertion downwards, and is not suitable for from the liquid container bottom the upwards application scenario of insertion.
The purpose of this utility model provides a kind of upwards liquid level sensor of insertion that is suitable for from the liquid container bottom.
The technical scheme that realizes above purpose is: overlap insulating sleeve on the exploring electrode of liquid level sensor, make between the exploring electrode mutually insulated and isolate with liquid, bending structure of end design thereon, dogleg section is higher than high liquid level (HLL), because dogleg section can not immerse in the liquid, also just less scaling, eliminate the sensor failure that fouling causes, thereby guaranteed the reliability of sensor.
Description of drawings:
Accompanying drawing 1 is the liquid level sensor structure principle chart.
Accompanying drawing 2 is liquid level sensor embodiment synoptic diagram.
Below, be described further in conjunction with the accompanying drawings:
Accompanying drawing 1 is the liquid level sensor structure principle chart.Liquid level sensor is upward through liquid container from the below wall 5 inserts the containers and is fixing, and exploring electrode 4 and public electrode 9 are fixed in the stay pipe 6, and overlap insulating sleeve 2 and 10 respectively, makes its mutually insulated and isolates with liquid, only stays the end of electrode exposed; Public electrode 9 is dipped in the liquid, and when the height shown in the liquid level arrival dotted line 3, exploring electrode 4 immerses liquid, and by liquid and public electrode 9 conductings, can obtain liquid level signal through processing of circuit; The upper design of exploring electrode 4 has a bending structure 1, and dogleg section is higher than high liquid level (HLL), so dogleg section can not immerse in the liquid, and is also just less scaling, thereby eliminated the influence of fouling to sensor reliability; To guide electrical box 7 into the lead that exploring electrode 4, public electrode 9 link to each other, can adopt directly draw, mode such as plug connector or connection terminal links to each other with governor circuit through cable 8; Also can link to each other, by signal processing circuit output and the corresponding electric signal of liquid level height with the signal processing circuit 11 in being built in sensor.Adopt the liquid level sensor of said structure to be suitable for from the liquid container bottom the upwards application scenario of insertion, also eliminated the influence of fouling simultaneously sensor reliability.
Embodiment of the present utility model is as follows: see accompanying drawing 2, public electrode 14, exploring electrode 12,13 all overlap insulating sleeve, be fixed in the stay pipe 15, exploring electrode 12 is high liquid level detection electrode, exploring electrode 13 is low liquid level detection electrode, each design of the upper end of exploring electrode 12,13 has a bending structure, dogleg section is higher than high liquid level (HLL), to guide electrical box 16 into the lead that exploring electrode 12,13, public electrode 14 link to each other, adopt directly draw, modes such as plug connector or connection terminal link to each other with governor circuit; Also can link to each other, by signal processing circuit output and the corresponding electric signal of liquid level height with the signal processing circuit 17 in being built in sensor.The temperature that this programme also can increase the quantity of exploring electrode as required or the built-in temperature sensitive element is measured liquid in sensor except that public electrode, all designs a bending structure and makes dogleg section be higher than high liquid level (HLL) in other electrode upper end.
Claims (1)
- A kind of liquid level sensor comprises at least one public electrode (9) and at least 1 exploring electrode (4), stay pipe (6), electrical box parts such as (7); Remove end overcoat insulating sleeve on the exploring electrode, make itself and liquid and other exploring electrode insulation isolation, it is characterized in that: described exploring electrode has designed a bending structure (1) respectively, and makes dogleg section be higher than high liquid level (HLL).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01279498 CN2519903Y (en) | 2001-12-28 | 2001-12-28 | Liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01279498 CN2519903Y (en) | 2001-12-28 | 2001-12-28 | Liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2519903Y true CN2519903Y (en) | 2002-11-06 |
Family
ID=33682719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01279498 Expired - Fee Related CN2519903Y (en) | 2001-12-28 | 2001-12-28 | Liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2519903Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445252A (en) * | 2011-12-10 | 2012-05-09 | 河南科技大学 | Resistor type water-level digital sensor |
| CN106441500A (en) * | 2015-08-12 | 2017-02-22 | 珠海任驰光电科技有限公司 | Electric-conductive liquid level sensor applied to severe environments |
| CN106546303A (en) * | 2015-09-23 | 2017-03-29 | 珠海任驰光电科技有限公司 | The capacitance level transducer being applied under adverse circumstances |
| CN110494719A (en) * | 2017-01-10 | 2019-11-22 | 罗伯特·博世有限公司 | Detect the liquid level sensor of the liquid level of liquid |
-
2001
- 2001-12-28 CN CN 01279498 patent/CN2519903Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445252A (en) * | 2011-12-10 | 2012-05-09 | 河南科技大学 | Resistor type water-level digital sensor |
| CN106441500A (en) * | 2015-08-12 | 2017-02-22 | 珠海任驰光电科技有限公司 | Electric-conductive liquid level sensor applied to severe environments |
| CN106546303A (en) * | 2015-09-23 | 2017-03-29 | 珠海任驰光电科技有限公司 | The capacitance level transducer being applied under adverse circumstances |
| CN110494719A (en) * | 2017-01-10 | 2019-11-22 | 罗伯特·博世有限公司 | Detect the liquid level sensor of the liquid level of liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |