CN2363272Y - Pneumatic type liquid material level meter - Google Patents
Pneumatic type liquid material level meter Download PDFInfo
- Publication number
- CN2363272Y CN2363272Y CN 98218834 CN98218834U CN2363272Y CN 2363272 Y CN2363272 Y CN 2363272Y CN 98218834 CN98218834 CN 98218834 CN 98218834 U CN98218834 U CN 98218834U CN 2363272 Y CN2363272 Y CN 2363272Y
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- liquid level
- flexible sheet
- rheostat
- material level
- 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 discloses a pneumatic type liquid material level meter which is a liquid level indicator using a diaphragm as a transmitting element, and the liquid level is measured through measuring pressure. The elastic diaphragm is coated on the upper surface of a sealed diaphragm box, the lower part of the diaphragm box is provided with a hollow tube, a loop is composed of a dc power supply E, an ammeter B, and a varistor RW, and a resistance adjusting lever of the varistor RW is driven by the elastic diaphragm through a known method. The pressure in the hollow tube is changed following the liquid level in a bin, the elastic diaphragm is deformed, the resistance adjusting lever is driven by the elastic diaphragm to adjust the resistance of the varistor RW, the liquid level value is directly displayed by the ammeter, and thus the material level meter can realize a conventional display of the material level.
Description
The utility model relates to a kind of vapour-pressure type liquid level-sensing device, is a kind of liquid level indicator of measuring liquid levels with diaphragm as transmitting element by gaging pressure.
In the prior art, the method that the liquid material level is detected is a lot, as: float lifting, current potential contact, Photoelectric Detection etc.But to the material level detection method of gasoline, machine oil and many chemical liquids seldom, the general float liftings of adopting more because these chemicals this as insulator, inflammable again, explosive must be away from power supply.Chinese patent CN87203326 discloses a kind of " contactless level-sensing device ", has that the pressure transducer, the air inlet that are made of reed switch, bellows are chewed, throttling vapour lock, gas bleed valve and an aiutage, and aiutage only is housed in the storehouse, and reed switch, bellows are located at outside the storehouse.Chew by air inlet and be blown into fresh air in the storehouse, when material level surpassed aiutage, exhaust was hindered, and the aiutage internal gas pressure raises, and causes bellows to be heaved, and the reed switch conducting produces output signal.This level-sensing device all is located at reed switch, bellows etc. outside the storehouse, has avoided the influence of dust, water vapor etc., high life.But it mainly is used for measuring bulk materials such as graininess, powdery, is unsuitable for the liquid material level is detected.Pressurized air must be arranged as power source, cost is higher.Owing to there is air constantly to enter in the storehouse, for making atmospheric pressure balance inside and outside the storehouse, protect positive measuring reliability, feed bin must have the gas outlet, therefore is unsuitable for being used for volatile inflammable, explosive, toxic liquid.And can only export the signal whether material level arrives a certain desired location, and can not measure concrete material level value, be actually an alarm.
The purpose of this utility model provides a kind of simple in structure, and is with low cost, can make linear the demonstration to material level, and be particularly suitable for being used as to insulation or the vapour-pressure type liquid level-sensing devices inflammable, explosive, that poisonous substance detects such as oils, chemical industry classes.
The purpose of this utility model is achieved through the following technical measures.
A kind of vapour-pressure type liquid level-sensing device, has flexible sheet, flexible sheet is covered in the upper surface of diaphragm seal film magazine, the diaphragm case below is connected with a hollow tubular, by the loop that direct supply, reometer, rheostat constitute, its rheostatic resistance is adjusted lever and is driven by known methods by flexible sheet.
Rheostatic resistance is adjusted the lever middle part near terminal a bit being hinged on the fixed pivot, and end is hinged with the connecting rod that is articulated on the flexible sheet.After with simple structure the flexible sheet deflection being amplified, act on the rheostat, improve the precision that detects.
Be serially connected with a variable resistor in the loop that constitutes by direct supply, reometer, rheostat, adjust variable resistor to regulate initial zero-bit.
Below in conjunction with accompanying drawing fact Example of the present utility model is discussed in detail.
Accompanying drawing uses the structural representation of novel vapour-pressure type liquid level-sensing device for this.
The utility model vapour-pressure type liquid level-sensing device as shown in the figure, mainly is made up of hollow tubular 3, diaphragm case 4, flexible sheet 5, rheostat RW, variable resistor RF, reometer B and direct supply E.Diaphragm case 4 upper surfaces of sealing are covered with flexible sheet 5, and diaphragm case 4 belows are connected with a hollow tubular 3.By the loop that direct supply E, reometer B, variable resistor RF and rheostat RW constitute, the resistance of its rheostat RW is adjusted lever 6 middle parts near terminal a bit being hinged on the fixed pivot, and connecting rod 7 terminal and that be articulated on the flexible sheet 5 is hinged.
During work, deeply to liquid feed bin 1, the mouth of pipe is near feed bin 1 bottom for hollow tubular 3.When liquid in the storehouse 2 was increased to the nozzle position of hollow tubular 3, the air in the pipe was promptly sealed, and the reading of reometer B is set at zero at this moment.Along with liquid level in the feed bin 1 raises, air is compressed in the hollow tubular 3, pressure rises, make the outside under pressure bulging deformation of flexible sheet 5 of diaphragm case 4 tops that are communicated with it, adjust lever 6 and rotate by driving the resistance that is articulated in fixed pivot, make rheostat RW produce change in resistance, thereby the electric current that flows through among the reometer B is changed around fixed pivot with the hinged connecting rod 7 of flexible sheet 5, the reading of ammeter B changes, and shows the level value in the feed bin 1 at that time.When the liquid level in the feed bin 1 descended, the air pressure in the hollow tubular 3 descended, and flexible sheet 5 resets gradually, and the prevention of rheostat RW is changed in the opposite direction, and the reading of ammeter B shows new level value in the feed bin 1.
The utility model vapour-pressure type liquid level-sensing device is simple in structure, with low cost, can make linear the demonstration to material level; Detected liquid is away from power supply, can be used to seal feed bin simultaneously, therefore, be particularly suitable for being used as to oils, chemical industry class etc. this as insulating material, or inflammable, explosive, poisonous article detect.
Claims (3)
1. vapour-pressure type liquid level-sensing device, has flexible sheet, it is characterized in that: flexible sheet (5) is covered in the upper surface of diaphragm seal film magazine (4), diaphragm case (4) below is connected with a hollow tubular (3), by the loop that direct supply (E), reometer (B), rheostat (RW) constitute, the resistance of its rheostat (RW) is adjusted lever (6) and is driven by known methods by flexible sheet (5).
2. level-sensing device according to claim 1 is characterized in that: the resistance of described rheostat (RW) is adjusted lever (6) middle part near terminal a bit being hinged on the fixed pivot, and end is hinged with the connecting rod (7) that is articulated on the flexible sheet (5).
3. level-sensing device according to claim 1 is characterized in that: be serially connected with a variable resistor (RF) in the described loop by direct supply (E), reometer (B), rheostat (RW) formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98218834 CN2363272Y (en) | 1998-08-28 | 1998-08-28 | Pneumatic type liquid material level meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98218834 CN2363272Y (en) | 1998-08-28 | 1998-08-28 | Pneumatic type liquid material level meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2363272Y true CN2363272Y (en) | 2000-02-09 |
Family
ID=33971069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98218834 Expired - Fee Related CN2363272Y (en) | 1998-08-28 | 1998-08-28 | Pneumatic type liquid material level meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2363272Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408448B (en) * | 2008-11-21 | 2010-04-14 | 湖南大学 | High-frequency high-precision water-level change meter |
| CN104280094A (en) * | 2014-10-22 | 2015-01-14 | 广东美的生活电器制造有限公司 | Kettle water level detection device, kettle and kettle water level detection method |
| CN104296828A (en) * | 2014-09-24 | 2015-01-21 | 昆山腾朗电子有限公司 | Air pressure type liquid level detection device |
| CN104596612A (en) * | 2015-01-26 | 2015-05-06 | 中国科学院大气物理研究所 | Method and device for detecting liquid level and liquid capacity |
| CN110440872A (en) * | 2019-08-23 | 2019-11-12 | 江苏多维科技有限公司 | A kind of magnetic induction level-sensing device |
| CN110853467A (en) * | 2019-12-02 | 2020-02-28 | 李欣雨 | Ohm's law teaching aid |
| CN110907012A (en) * | 2019-12-09 | 2020-03-24 | 含山县全味调味品制造有限公司 | Liquid level measuring device for vegetable oil tank |
| CN111121914A (en) * | 2020-01-02 | 2020-05-08 | 上海辉博自动化仪表有限公司 | Sensing device for detecting material level |
| CN111289061A (en) * | 2020-02-13 | 2020-06-16 | 辽宁工程技术大学 | Coal mine disaster monitoring and early warning equipment and system thereof |
| CN114439677A (en) * | 2021-12-20 | 2022-05-06 | 华能澜沧江水电股份有限公司 | Speed regulator water head calculation compensation system and method based on volute water pressure |
-
1998
- 1998-08-28 CN CN 98218834 patent/CN2363272Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408448B (en) * | 2008-11-21 | 2010-04-14 | 湖南大学 | High-frequency high-precision water-level change meter |
| CN104296828A (en) * | 2014-09-24 | 2015-01-21 | 昆山腾朗电子有限公司 | Air pressure type liquid level detection device |
| CN104280094A (en) * | 2014-10-22 | 2015-01-14 | 广东美的生活电器制造有限公司 | Kettle water level detection device, kettle and kettle water level detection method |
| CN104596612A (en) * | 2015-01-26 | 2015-05-06 | 中国科学院大气物理研究所 | Method and device for detecting liquid level and liquid capacity |
| CN110440872A (en) * | 2019-08-23 | 2019-11-12 | 江苏多维科技有限公司 | A kind of magnetic induction level-sensing device |
| US12018973B2 (en) | 2019-08-23 | 2024-06-25 | MultiDimension Technology Co., Ltd. | Magnetic level gauge |
| CN110853467A (en) * | 2019-12-02 | 2020-02-28 | 李欣雨 | Ohm's law teaching aid |
| CN110907012A (en) * | 2019-12-09 | 2020-03-24 | 含山县全味调味品制造有限公司 | Liquid level measuring device for vegetable oil tank |
| CN111121914A (en) * | 2020-01-02 | 2020-05-08 | 上海辉博自动化仪表有限公司 | Sensing device for detecting material level |
| CN111289061A (en) * | 2020-02-13 | 2020-06-16 | 辽宁工程技术大学 | Coal mine disaster monitoring and early warning equipment and system thereof |
| CN114439677A (en) * | 2021-12-20 | 2022-05-06 | 华能澜沧江水电股份有限公司 | Speed regulator water head calculation compensation system and method based on volute water pressure |
| CN114439677B (en) * | 2021-12-20 | 2024-03-26 | 华能澜沧江水电股份有限公司 | Speed regulator water head calculation compensation system and method based on volute water pressure |
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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 |