CN206945086U - Liquid tank level measuring system - Google Patents
Liquid tank level measuring system Download PDFInfo
- Publication number
- CN206945086U CN206945086U CN201720653606.4U CN201720653606U CN206945086U CN 206945086 U CN206945086 U CN 206945086U CN 201720653606 U CN201720653606 U CN 201720653606U CN 206945086 U CN206945086 U CN 206945086U
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- liquid level
- level sensor
- microprocessor
- liquid
- measuring system
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a kind of liquid tank level measuring system, including fluid reservoir, the first liquid level sensor, the second liquid level sensor, transmitter, microprocessor, display and PLC, first liquid level sensor is located at height different in fluid reservoir from the second liquid level sensor；The pressure signal output end of first liquid level sensor and the second liquid level sensor is connected with the pressure signal input of transmitter respectively, the current signal output end of the transmitter and the current signal input of microprocessor connect, the data output end of the microprocessor and the data input pin of display connect, and the signal output part of the microprocessor and the signal input part of PLC connect.The utility model is measured by 2 values, and traditional liquid level sensor can be avoided to be greatly enhanced the liquid level measurement precision of large-scale liquid storage tank because the influence of Media density and temperature causes measurement inaccurate, avoid the generation of tank boil-overs accident, ensure safety in production.
Description
Technical field
It the utility model is related to the technical field of level gauging, and in particular to a kind of liquid tank level measuring system.
Background technology
Existing static pressure type storage tank liquid-level meter is due to the limitation of its structure, and not only measurement accuracy is easily by measured medium
The influence of density and temperature change, and cannot be guaranteed production security reliability, for frequent contaminated product or fall oil storage tank this
Kind influence it is especially huge, therefore can to related process operate bring greatly it is not convenient, tank boil-overs accident can occur when serious.
Utility model content
The purpose of this utility model is to overcome the shortcomings of above-mentioned background technology, and provides a kind of degree of accuracy height, sensitivity
Strong liquid tank level measuring system.
To achieve the above object, the liquid tank level measuring system designed by the utility model, including fluid reservoir, the first liquid
Level sensor, the second liquid level sensor, transmitter, microprocessor, display and PLC, first level sensing
Device is located at height different in fluid reservoir from the second liquid level sensor；First liquid level sensor and the second liquid level sensor
Pressure signal output end is connected with the pressure signal input of transmitter respectively, the current signal output end of the transmitter with it is micro-
The current signal input connection of processor, the data output end of the microprocessor and the data input pin of display connect,
The signal output part of the microprocessor and the signal input part of PLC connect.
Further, it also includes alarm, the alarm signal output ends of the PLC and the alarm signal of alarm
The connection of number input.
Yet further, the alarm is buzzer and/or photophore.
Further, the photophore is red light emitting diodes.
Compared with prior art, the utility model has the following advantages that：
First, liquid tank level measuring system of the present utility model is measured using the liquid level sensor of two different heights
The pressure of diverse location in fluid reservoir, and by the pressure values measured by transmitter be changed into current forms be sent to it is coupled
Microprocessor in, microprocessor converses liquid in fluid reservoir according to the corresponding relation between the pressure and height value prestored
The height value in face is simultaneously exported to display, and 2 value measurements can avoid traditional liquid level sensor because of Media density and the shadow of temperature
Pilot causes measurement inaccurate, can effectively reduce Media density and liquid level measurement precision error that temperature change is brought, can be greatly
Ground improves the liquid level measurement precision of large-scale liquid storage tank, avoids the generation of tank boil-overs accident, ensures safety in production.
Second, measuring system of the present utility model is also devised with alarm, when liquid level is more than preset value alarm device
Alarm signal is sent, warning function can be played, it is not necessary to which artificial frequently inspection achieves that the real-time prison to liquid level in fluid reservoir
Control, not only alleviates the labor intensity of worker, and improve the automatization level of factory.
Brief description of the drawings
Fig. 1 is a kind of circuit connection diagram of liquid tank level measuring system；
In figure：The liquid level sensors of 1- first, the liquid level sensors of 2- second, 3- transmitters, 4- microprocessors, 5- displays,
6-PLC controllers, 7- alarms, 8- fluid reservoirs.
Embodiment
Performance of the present utility model is described in detail with reference to case study on implementation, but they are not formed to this practicality newly
The restriction of type, it is only for example.Simultaneously by illustrating the utility model the advantages of, will become clearer and be readily appreciated that.
A kind of liquid tank level measuring system of the present utility model as shown in the figure, including fluid reservoir 8, the first liquid level sensor
1st, the second liquid level sensor 2, transmitter 3, microprocessor 4, display 5, PLC 6 and alarm 7, the first liquid level pass
Sensor 1 is located at height different in fluid reservoir 8 from the second liquid level sensor 2；First liquid level sensor 1 and the second liquid level sensor
2 pressure signal output end is connected with the pressure signal input of transmitter 3 respectively, the current signal output end of transmitter 3 with
The current signal input connection of microprocessor 4, the data output end of microprocessor 4 are connected with the data input pin of display 5,
The signal output part of microprocessor 4 is connected with the signal input part of PLC 6, the alarm signal output ends of PLC 6
It is connected with the alarm signal input of alarm 7, alarm 7 is buzzer and/or photophore, and photophore is the pole of emitting red light two
Pipe.
Operation principle of the present utility model is：First liquid level sensor 1 and the second liquid level sensor 2 are put into fluid reservoir
Liquid in any position, the first liquid level sensor 1 is located above the second liquid level sensor 2, is produced for induced liquid
Pressure, and the pressure signal measured is sent to microprocessor 4 by transmitter 3.According to the pressure principle P of liquid1-P2=ρ
Gh, P1=ρ gH- ρ g Δ h, can obtain P with negligible density ρ influence1、P2With H relational expression.Wherein, P1For the first level sensing
The pressure of device 1, P2For the pressure of the second liquid level sensor 2, ρ is the density of liquid storage pot liquid, and g is local gravitational acceleration, h
For the vertical range of two liquid level sensors of installation, Δ h are that the second liquid level sensor 2 and tank bottom leave row up and down in fluid reservoir
The distance of silt.Understand, one-to-one relation be present between fixed range two pressures point pressure values and height values, that is, pass through pressure
Intensity values just can determine that the height value residing for liquid level.By the way that the corresponding relation of pressure values and height value is stored in into microprocessor in advance
In device, microprocessor just can determine that liquid level height value according to the pressure signal received and export.By measuring in fluid reservoir
The pressure P of two liquid level sensor present positions can obtain h values, and h values add the first liquid level sensor to the vertical of fluid reservoir bottom again
The height of liquid level in distance, as fluid reservoir.For the simplicity of calculating, placement location of second liquid level sensor in fluid reservoir
The preferably bottom of fluid reservoir.So, obtaining h values by measuring the pressure P of liquid level sensor present position in fluid reservoir is exactly
The height of liquid level in fluid reservoir.
Liquid tank level measuring system disclosed in the present embodiment, according to liquid pressure pass corresponding between liquid level height value
System, realize to the automatic measurement of liquid level position height value in fluid reservoir and output in real time, without reusing manual inspection
Mode.After liquid level is obtained, the industry standard signal that pressure values are transformed to 4-20mA by transmitter sends microprocessor to.
Wherein, the intensity of industry standard signal is directly proportional to pressure values.Retransmit, have after pressure signal is converted into industry standard signal
Transmit farther beneficial to by signal..In addition, measuring system of the present utility model is also devised with alarm, when liquid level is more than
Preset value alarm device sends alarm signal, can play warning function.
Described above is embodiment of the present utility model, the utility model is not limited to, for the technology of this area
For personnel, the utility model can have various modifications and variations.All made within spirit of the present utility model and principle
Any modification, equivalent substitution and improvements etc. all should be contained within right of the present utility model.
Claims (4)
1. a kind of liquid tank level measuring system, including fluid reservoir (8), it is characterised in that：Also include the first liquid level sensor
(1), the second liquid level sensor (2), transmitter (3), microprocessor (4), display (5) and PLC (6), described
One liquid level sensor (1) is located at height different in fluid reservoir (8) from the second liquid level sensor (2)；First level sensing
Pressure signal input of the pressure signal output end of device (1) and the second liquid level sensor (2) respectively with transmitter (3) is connected,
The current signal output end of the transmitter (3) is connected with the current signal input of microprocessor (4), the microprocessor
(4) data output end is connected with the data input pin of display (5), and signal output part and the PLC of the microprocessor (4) are controlled
The signal input part connection of device (6) processed.
2. liquid tank level measuring system according to claim 1, it is characterised in that：It also includes alarm (7), described
The alarm signal output ends of PLC (6) are connected with the alarm signal input of alarm (7).
3. liquid tank level measuring system according to claim 2, it is characterised in that：The alarm (7) is buzzer
And/or photophore.
4. liquid tank level measuring system according to claim 3, it is characterised in that：The photophore is emitting red light two
Pole pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653606.4U CN206945086U (en) | 2017-06-06 | 2017-06-06 | Liquid tank level measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720653606.4U CN206945086U (en) | 2017-06-06 | 2017-06-06 | Liquid tank level measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206945086U true CN206945086U (en) | 2018-01-30 |
Family
ID=61363849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720653606.4U Expired - Fee Related CN206945086U (en) | 2017-06-06 | 2017-06-06 | Liquid tank level measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206945086U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108814502A (en) * | 2018-06-29 | 2018-11-16 | 歌尔股份有限公司 | A kind of dish-washing machine level measuring control method and system |
| CN109709993A (en) * | 2018-12-29 | 2019-05-03 | 江苏和顺环保有限公司 | Liquid level intelligent control method |
| CN109827636A (en) * | 2019-03-14 | 2019-05-31 | 国投新疆罗布泊钾盐有限责任公司 | Digital liquid level measuring instrument |
| CN110954440A (en) * | 2019-12-11 | 2020-04-03 | 安徽省锐凌计量器制造有限公司 | Density liquid level detection device and detection method |
| WO2021031775A1 (en) * | 2019-08-16 | 2021-02-25 | 南京华鼎纳米技术研究院有限公司 | Implementation method for large book deacidification system |
| CN113375754A (en) * | 2021-04-30 | 2021-09-10 | 上海新昇半导体科技有限公司 | Liquid level detector capable of avoiding foam interference and liquid level detection method |
| CN113916323A (en) * | 2021-09-10 | 2022-01-11 | 深圳伊讯科技有限公司 | Oil storage tank optic fibre liquid level intelligent monitoring system |
| CN113911581A (en) * | 2021-10-26 | 2022-01-11 | 大庆市镁华仪仪表衡器有限公司 | Instrument electronic integrated transmitter |
| CN114216498A (en) * | 2021-11-19 | 2022-03-22 | 领翌技术(横琴)有限公司 | IBC barrel status detection device |
-
2017
- 2017-06-06 CN CN201720653606.4U patent/CN206945086U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108814502A (en) * | 2018-06-29 | 2018-11-16 | 歌尔股份有限公司 | A kind of dish-washing machine level measuring control method and system |
| CN109709993A (en) * | 2018-12-29 | 2019-05-03 | 江苏和顺环保有限公司 | Liquid level intelligent control method |
| CN109827636A (en) * | 2019-03-14 | 2019-05-31 | 国投新疆罗布泊钾盐有限责任公司 | Digital liquid level measuring instrument |
| WO2021031775A1 (en) * | 2019-08-16 | 2021-02-25 | 南京华鼎纳米技术研究院有限公司 | Implementation method for large book deacidification system |
| CN110954440A (en) * | 2019-12-11 | 2020-04-03 | 安徽省锐凌计量器制造有限公司 | Density liquid level detection device and detection method |
| CN113375754A (en) * | 2021-04-30 | 2021-09-10 | 上海新昇半导体科技有限公司 | Liquid level detector capable of avoiding foam interference and liquid level detection method |
| CN113916323A (en) * | 2021-09-10 | 2022-01-11 | 深圳伊讯科技有限公司 | Oil storage tank optic fibre liquid level intelligent monitoring system |
| CN113911581A (en) * | 2021-10-26 | 2022-01-11 | 大庆市镁华仪仪表衡器有限公司 | Instrument electronic integrated transmitter |
| CN113911581B (en) * | 2021-10-26 | 2022-04-26 | 大庆市镁华仪仪表衡器有限公司 | Instrument electronic integrated transmitter |
| CN114216498A (en) * | 2021-11-19 | 2022-03-22 | 领翌技术(横琴)有限公司 | IBC barrel status detection device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180130 Termination date: 20180606 |
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| CF01 | Termination of patent right due to non-payment of annual fee |