CN201000351Y - Pressure type liquid level instrument - Google Patents
Pressure type liquid level instrument Download PDFInfo
- Publication number
- CN201000351Y CN201000351Y CNU2006201539782U CN200620153978U CN201000351Y CN 201000351 Y CN201000351 Y CN 201000351Y CN U2006201539782 U CNU2006201539782 U CN U2006201539782U CN 200620153978 U CN200620153978 U CN 200620153978U CN 201000351 Y CN201000351 Y CN 201000351Y
- Authority
- CN
- China
- Prior art keywords
- liquid level
- pressure
- cushion chamber
- type liquid
- pressure type
- 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
Links
Images
Abstract
The utility model discloses a pressure type liquid level instrument, which comprises a liquid box, an air liquid level cushion chamber and a pressure sensor, wherein the air liquid level cushion chamber is an enclosed container with two intercommunicating pores, the intercommunicating pore positioned on the bottom part is connected with the liquid box to be measured through a communicating pipe, and the intercommunicating pore positioned on the top part is connected with the pressure taking end of the pressure sensor through the communicating pipe; the output terminal of the pressure sensor is connected with a voltage amplifying circuit, and the voltage amplifying circuit is connected with a display instrument. The pressure sensor of the utility model has a simple structure, the air liquid level cushion chamber can reduce the error caused by the wave surface fluctuating and the temperature variation; the measurement is convenient and accurate, the utility model is safe and reliable, and the measuring range is wide from 1 cm to 20 m.
Description
Technical field
The utility model relates to a kind of liquid level instrument, specifically, relates to a kind of pressure type liquid level instrument.
Background technology
The structure and the kind of liquid level instrument are various, mainly contain float type (floatage-type, float-type, floating-type and gravity type), ultrasonic type and condenser type from big class, monitor and control the place to be very important in liquid level.General each level gauge is all according to its peculiar purposes design, most of liquid levels lack the mechanical filtering of considering the fluctuation liquid level, and the ability of anti-level fluctuation not is to the fluctuation Level Detection error of motion liquid case method preferably not still, in addition, most liquid level instrument measurement ranges are too little.
The utility model content
The purpose of this utility model is the deficiency that exists at existing liquid level instrument, provides a kind of motion and standstill liquid case that is applicable to, the pressure type liquid level instrument that the level gauging scope is bigger.
For achieving the above object, the utility model adopts following technical scheme:
A kind of pressure type liquid level instrument, comprise liquid case, air liquid level cushion chamber and pressure transducer, air liquid level cushion chamber is the closed container that leaves two intercommunicating pores, the intercommunicating pore that is positioned at the bottom was communicated with liquid case to be measured by communicating pipe, the intercommunicating pore that is positioned at the top joins by the pressure end of communicating pipe and pressure transducer, the output terminal of pressure transducer connects voltage amplifier circuit, and voltage amplifier circuit connects Displaying Meter again.
As preferably, the liquid level of above-mentioned air liquid level cushion chamber is equal with liquid case bottom surface.
As preferably, above-mentioned pressure transducer preferred 26PCCFA6G type pressure transducer or similar pressure transducer.Above-mentioned Displaying Meter is numeral or analog secondary instrument.Above-mentioned amplifying circuit INA128 instrument amplifier or interlock circuit.
Compared with prior art, the utlity model has following beneficial effect: the utility model pressure sensor structure is simple, and the air liquid level cushion chamber that has can reduce the error that fluctuate in the corrugated and temperature variation causes; It is accurately convenient, safe and reliable to measure, and the measurement range broad is for 1cm arrives 20m.
Description of drawings
Fig. 1 is a pressure type liquid level instrument structural representation;
Embodiment
As shown in Figure 1, a kind of pressure type liquid level instrument, comprise liquid case 1, air liquid level cushion chamber 3 and pressure transducer 5, air liquid level cushion chamber 3 is for leaving the closed container of two intercommunicating pores, the intercommunicating pore that is positioned at the bottom is by being communicated with liquid case 1 communicating pipe 4, the intercommunicating pore that is positioned at the top by communicating pipe 4 the pressure end with pressure transducer 5 join, the output terminal of pressure transducer 5 connects voltage amplifier circuit, voltage amplifier circuit connects Displaying Meter again.
Liquid case 1 inner dress liquid 2, opening communicates with atmosphere; The liquid level of air liquid level cushion chamber 3 is equal with liquid case to be measured 1 bottom surface, air liquid level cushion chamber 3 tops are compressed with airtight air, when the liquid level of liquid case 1 changes, the closed gas pressure change, pressure transducer 5 converts air pressure change to change in voltage, after voltage amplifier is placed on, send the demonstration of aanalogvoltage table or send A/D change-over circuit, carry out digital instrument again and show.
The interior diameter of communicating pipe 4 is smaller, is about 2～3mm, makes liquid flow slow, can reduce the error that liquid fluctuating causes; The internal diameter of communicating pipe 4 is smaller, be about 2～3mm, make inner airtight little air, air liquid level cushion chamber internal diameter is 2～3cm, cross-sectional area is big, be about 100 times of area of communicating pipe, easily cushion gas that temperature variation causes and expand and shrink the liquid level change of bringing, reduced the liquid level error that temperature variation causes.
Claims (5)
1, a kind of pressure type liquid level instrument, it is characterized in that comprising liquid case (1), air liquid level cushion chamber (3) and pressure transducer (5), air liquid level cushion chamber (3) is for leaving the closed container of two intercommunicating pores, the intercommunicating pore that is positioned at the bottom is by being communicated with liquid case (1) communicating pipe (4), the intercommunicating pore that is positioned at the top by communicating pipe (4) the pressure end with pressure transducer (5) join, the output terminal of pressure transducer (5) connects voltage amplifier circuit, and voltage amplifier circuit connects Displaying Meter again.
2, pressure type liquid level instrument according to claim 1 is characterized in that the liquid level of described air liquid level cushion chamber (3) is equal with liquid case (1) bottom surface.
3, pressure type liquid level instrument according to claim 1 is characterized in that described pressure transducer (5) is a 26PCCFA6G type pressure transducer.
4, pressure type liquid level instrument according to claim 1 is characterized in that described Displaying Meter is numeral or analog secondary instrument.
5, pressure type liquid level instrument according to claim 1 is characterized in that described voltage amplifier circuit INA128 instrument amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201539782U CN201000351Y (en) | 2006-11-29 | 2006-11-29 | Pressure type liquid level instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201539782U CN201000351Y (en) | 2006-11-29 | 2006-11-29 | Pressure type liquid level instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201000351Y true CN201000351Y (en) | 2008-01-02 |
Family
ID=39014755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201539782U Expired - Fee Related CN201000351Y (en) | 2006-11-29 | 2006-11-29 | Pressure type liquid level instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201000351Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104655235A (en) * | 2015-01-30 | 2015-05-27 | 上海和伍新材料科技有限公司 | Device and method for detecting depth of water in ultrasonic detection equipment |
| CN106762028A (en) * | 2017-02-22 | 2017-05-31 | 邵阳学院 | A kind of internal combustion engine oil mass real-time monitoring and automatic control and adjustment oil supply system |
| CN109471462A (en) * | 2018-12-20 | 2019-03-15 | 苏州能斯达电子科技有限公司 | A kind of liquid level intelligent monitoring device |
-
2006
- 2006-11-29 CN CNU2006201539782U patent/CN201000351Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104655235A (en) * | 2015-01-30 | 2015-05-27 | 上海和伍新材料科技有限公司 | Device and method for detecting depth of water in ultrasonic detection equipment |
| CN104655235B (en) * | 2015-01-30 | 2017-10-13 | 上海和伍精密仪器股份有限公司 | Depth of water detection means and method in ultrasonic detecting equipment |
| CN106762028A (en) * | 2017-02-22 | 2017-05-31 | 邵阳学院 | A kind of internal combustion engine oil mass real-time monitoring and automatic control and adjustment oil supply system |
| CN109471462A (en) * | 2018-12-20 | 2019-03-15 | 苏州能斯达电子科技有限公司 | A kind of liquid level intelligent monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201000351Y (en) | Pressure type liquid level instrument | |
| CN202631043U (en) | Formation gas volume measurement device of flexible package lithium ion battery | |
| CN103528642A (en) | Capacitance-type liquidometer capable of correcting dielectric constants in real time and liquid level measurement method thereof | |
| CN201060148Y (en) | Daqu volume weight measuring apparatus | |
| CN210922761U (en) | Liquid level detection device and control circuit thereof | |
| CN209570248U (en) | A kind of throw-in type liquid transmitter | |
| CN2676159Y (en) | Weighing type oil well meter | |
| CN202582655U (en) | Electronic liquid level meter | |
| CN204359393U (en) | A kind of pick-up unit of fluid level transmitter of improvement | |
| CN203287545U (en) | Control system for meteorological acquisition device | |
| CN211425747U (en) | Simple air pressure detection device for pressure container | |
| CN201780107U (en) | Differential pressure type electronic horizon sensor | |
| CN201094064Y (en) | Mechanical-electronic combined filtering accurate air bubble type water gauge | |
| CN201060079Y (en) | Intelligent differential pressure cell | |
| CN201035040Y (en) | Mining wind speed transducer based on pitot principle | |
| CN203365270U (en) | Solution density detection device based on pneumatic sensor | |
| CN201159661Y (en) | Equipressure transmission device | |
| CN204101124U (en) | The continuous coverage of a kind of novel solid level of filler material becomes send output unit | |
| CN202852169U (en) | Vacuum pumping valve capable of detecting vacuum degree conveniently | |
| CN101050987A (en) | Fluid pressure measurer | |
| CN201909621U (en) | Testing device used for maximum apertures of diaphragms of nickel-metal hydride batteries | |
| CN201096555Y (en) | Compensation type digital micro manometer | |
| CN2444213Y (en) | Measuring meter for outrange liquid level difference | |
| CN2876745Y (en) | Atmosphere meter | |
| CN204044018U (en) | A kind of manoscopy device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Termination date: 20141129 |
|
| EXPY | Termination of patent right or utility model |