CN204854879U - Device of compensation is switched to inside and outside gas circuit of non - pressure release bubble level gauge - Google Patents
Device of compensation is switched to inside and outside gas circuit of non - pressure release bubble level gauge Download PDFInfo
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- CN204854879U CN204854879U CN201520569857.5U CN201520569857U CN204854879U CN 204854879 U CN204854879 U CN 204854879U CN 201520569857 U CN201520569857 U CN 201520569857U CN 204854879 U CN204854879 U CN 204854879U
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- solenoid valve
- air pump
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- intelligent control
- way solenoid
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Abstract
The utility model discloses a device of compensation is switched to inside and outside gas circuit of non - pressure release bubble level gauge, comprises an intelligent control unit, still include the piston air pump, the inlet end and the 2nd air cleaner intercommunication of piston air pump, give vent to anger end and two solenoid valve one end intercommunications of piston air pump, two solenoid valve's the other end passes through trachea and air out head intercommunication, the trachea still with three solenoid valve's first inlet end intercommunication, three solenoid valve's second inlet end and air cleaner intercommunication, three solenoid valve's the end of giving vent to anger is connected with diffusion silicon pressure sensor, diffusion silicon pressure sensor be connected with intelligent control unit, air out head sets up in the liquid that awaits measuring, it still is provided with the temperature sensor who is connected with intelligent control unit in the liquid to await measuring. The utility model discloses stability of measuring tool improves, and long -time the measurement does not have the drift, sensor measurements does not have drift, need not the pressure release, reduce air pump operating time, increased air pump life, reduced whole consumption.
Description
Technical field
The utility model relates to technical field of automation, is specifically related to gas circuit inside and outside a kind of non-pressure release bubble liquid level gauge and switches the device compensated.Be applicable to gas circuit inside and outside bubble liquid level gauge and switch compensate for zero shift.
Background technology
Traditional bubble liquid level counts single gas circuit, use two independently pressure transducer measurement tracheal strips external pressures, because pressure transducer self exists drift, the pressure reduction measured can be caused to occur drift, the liquid level of final measurement also there will be drift, thus cannot improve Measurement sensibility and precision.
And the scheme that the utility model provides uses same pressure transducer, tracheal strips external pressure is measured in the mode timesharing switched by gas circuit, owing to using same pressure transducer, and switching time is very short, can think that pressure transducer drift is fixing at short notice, after external and internal pressure does difference, drift can be offset, thus solves the drift of existing bubble liquid level gauge appearance, finally improves stability and the precision of bubble liquid level gauge.
Utility model content
The purpose of this utility model is the problems referred to above being to exist for prior art, provides gas circuit inside and outside a kind of non-pressure release bubble liquid level gauge to switch the device compensated.Construct two gas circuits by three-way solenoid valve, inner air path measures liquid downforce, an outside gas circuit as with reference to gas circuit, for measuring atmospheric pressure.Compensate under the prerequisite of not pressure release due to the zero point drift of pressure transducer own and extraneous factor impact cause can not Measurement accuracy.
Above-mentioned purpose of the present utility model is achieved through the following technical solutions:
Inside and outside a kind of non-pressure release bubble liquid level gauge, gas circuit switches the device compensated, comprise intelligent control unit, also comprise piston air pump, the inlet end of piston air pump is communicated with the second air strainer, the outlet side of piston air pump is communicated with two way solenoid valve one end, the other end of two way solenoid valve is communicated with head of giving vent to anger by tracheae, tracheae is also communicated with the first inlet end of three-way solenoid valve, second inlet end of three-way solenoid valve is communicated with the first air strainer, the outlet side of three-way solenoid valve is connected with diffusion silicon pressure sensor, diffusion silicon pressure sensor is connected with intelligent control unit, head of giving vent to anger is arranged in testing liquid, the temperature sensor be connected with intelligent control unit is also provided with in testing liquid.
The utility model compared with prior art, has the following advantages:
1, Measurement sensibility improves, and long-time nothing of measuring is drifted about.
2, sensor measurement inferred-zero drift.
3, without the need to pressure release, reduce the air pump working time, add air pump serviceable life, reduce overall power.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-intelligent control unit; 2-diffusion silicon pressure sensor; 3-three-way solenoid valve; 4-first air strainer; 5-three-way connection; 6-tracheae; 7-temperature sensor; 8-gives vent to anger head; 9-gas container; 10-two way solenoid valve; 11-piston air pump; 12-second air strainer; 13-keyboard; 14-display.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail.
Inside and outside a kind of non-pressure release bubble liquid level gauge, gas circuit switches the device compensated, comprise intelligent control unit 1, also comprise piston air pump 11, the inlet end of piston air pump 11 is communicated with the second air strainer 12, the outlet side of piston air pump 11 is communicated with two way solenoid valve 10 one end, the other end of two way solenoid valve 10 8 to be communicated with giving vent to anger by tracheae 6, tracheae 6 is also communicated with the first inlet end of three-way solenoid valve 3, second inlet end of three-way solenoid valve 3 is communicated with the first air strainer 4, the outlet side of three-way solenoid valve 3 is connected with diffusion silicon pressure sensor 2, diffusion silicon pressure sensor is connected with intelligent control unit 1, give vent to anger and 8 be arranged in testing liquid, the temperature sensor 7 be connected with intelligent control unit 1 is also provided with in testing liquid.
Two way solenoid valve 10 is opened by intelligent control unit 1, control three-way solenoid valve 3 and connect diffusion silicon pressure sensor 2 and three-way connection 5, start piston air pump 11, piston air pump 11 sucks air from the second air strainer 12 be attached thereto, and will inject tracheae 6, and discharge from gas container 9 after air compressing, after the liquid in tracheae 6 drains completely, pressurized air, through gas container 9, enters into liquid with the form of bubble, and finally enters in air.
Intelligent control unit is by diffusion silicon pressure sensor 2, and measure tracheae 6 internal pressure not in increase, now internal and external pressure balance, unnecessary gas can enter into liquid from gas container with the form of bubble.
After going out to have bubble to go out, close two way solenoid valve 10, stop piston air pump 11, and the pressure value P 1 of tracheae 6 compressed air inside is measured by diffusion silicon pressure sensor 2, control three-way solenoid valve afterwards and connect the first air strainer 4 and diffusion silicon pressure sensor 2 that are attached thereto, and the force value of the first air strainer 4 inside is measured by diffusion silicon pressure sensor 2, now the first air strainer 4 is directly connected with air, and the pressure therefore measured is atmospheric pressure P2.Intelligent control unit 1 obtains liquid press down force value P by tracheae 6 compressed air pressure value P 1 being deducted atmospheric pressure value P2, and according to following formula measuring and calculating level value, and show over the display.
h=P/(ρg)
Fluid density ρ is relevant to actual temperature, and therefore temperature sensor 7 measures the temperature of a liquid, and can search the corresponding liquid actual density prestored by intelligent control unit 1 according to temperature value.Gravity acceleration g is by tabling look-up and being stored by the input through keyboard of intelligent control unit.
Inside and outside gas circuit switching is carried out owing to employing three-way solenoid valve 3 in the utility model, therefore in measuring process without the need to pressure release, inside and outside airline pressure value is measured by same diffusion silicon pressure sensor 2 and is drawn, therefore liquid downforce P=P1-P2, can balance out due to the zero point drift of diffusion silicon pressure sensor 2 own and extraneous factor impact cause can not Measurement accuracy, and then improve measuring accuracy and stability
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (1)
1. inside and outside a non-pressure release bubble liquid level gauge, gas circuit switches the device compensated, comprise intelligent control unit (1), it is characterized in that, also comprise piston air pump (11), the inlet end of piston air pump (11) is communicated with the second air strainer (12), the outlet side of piston air pump (11) is communicated with two way solenoid valve (10) one end, the other end of two way solenoid valve (10) is communicated with head of giving vent to anger (8) by tracheae (6), tracheae (6) is also communicated with the first inlet end of three-way solenoid valve (3), second inlet end of three-way solenoid valve (3) is communicated with the first air strainer (4), the outlet side of three-way solenoid valve (3) is connected with diffusion silicon pressure sensor (2), diffusion silicon pressure sensor (2) is connected with intelligent control unit (1), head (8) of giving vent to anger is arranged in testing liquid, the temperature sensor (7) be connected with intelligent control unit (1) is also provided with in testing liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520569857.5U CN204854879U (en) | 2015-08-01 | 2015-08-01 | Device of compensation is switched to inside and outside gas circuit of non - pressure release bubble level gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520569857.5U CN204854879U (en) | 2015-08-01 | 2015-08-01 | Device of compensation is switched to inside and outside gas circuit of non - pressure release bubble level gauge |
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| Publication Number | Publication Date |
|---|---|
| CN204854879U true CN204854879U (en) | 2015-12-09 |
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| CN201520569857.5U Active CN204854879U (en) | 2015-08-01 | 2015-08-01 | Device of compensation is switched to inside and outside gas circuit of non - pressure release bubble level gauge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352563A (en) * | 2015-12-10 | 2016-02-24 | 江南大学 | Anti-corrosion liquid level detection device and anti-corrosion liquid level detection method |
| CN109323737A (en) * | 2018-09-19 | 2019-02-12 | 宁波市机电工业研究设计院有限公司 | Water level measurement method and device |
| CN110455371A (en) * | 2019-08-12 | 2019-11-15 | 深圳市宏电技术股份有限公司 | A kind of air bubble type liquid level gauge detection host, air bubble type liquid level gauge and system |
| CN110455372A (en) * | 2019-08-12 | 2019-11-15 | 深圳市宏电技术股份有限公司 | A kind of air bubble type liquid level gauge detection device, system and method |
-
2015
- 2015-08-01 CN CN201520569857.5U patent/CN204854879U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352563A (en) * | 2015-12-10 | 2016-02-24 | 江南大学 | Anti-corrosion liquid level detection device and anti-corrosion liquid level detection method |
| CN105352563B (en) * | 2015-12-10 | 2018-11-30 | 江南大学 | A kind of anticorrosion liquid level detection device |
| CN109323737A (en) * | 2018-09-19 | 2019-02-12 | 宁波市机电工业研究设计院有限公司 | Water level measurement method and device |
| CN110455371A (en) * | 2019-08-12 | 2019-11-15 | 深圳市宏电技术股份有限公司 | A kind of air bubble type liquid level gauge detection host, air bubble type liquid level gauge and system |
| CN110455372A (en) * | 2019-08-12 | 2019-11-15 | 深圳市宏电技术股份有限公司 | A kind of air bubble type liquid level gauge detection device, system and method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 430000 unit 1, floor 1-5, building 3-11, phase III, optical core center, 303 Guanggu Avenue, Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: WUHAN NEWFIBER PHOTOELECTRIC Co.,Ltd. Address before: 11 / F, building C3, optical valley software park, special No.1, Guanshan Avenue, Donghu Development Zone, Wuhan City, Hubei Province, 430074 Patentee before: WUHAN NEWFIBER OPTOELECTRONIC TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |