CN105203187A - Variable-resistance type water level measurement device - Google Patents
Variable-resistance type water level measurement device Download PDFInfo
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- CN105203187A CN105203187A CN201510502977.8A CN201510502977A CN105203187A CN 105203187 A CN105203187 A CN 105203187A CN 201510502977 A CN201510502977 A CN 201510502977A CN 105203187 A CN105203187 A CN 105203187A
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- measurement device
- control unit
- resistance
- level measurement
- water level
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Abstract
The invention discloses a variable-resistance type water level measurement device which comprises a shell (1), a measurement and control unit (2), resistance guide rails (3) and a floating ball (4), wherein the measurement and control unit (2) is arranged at the inner upper part of the shell (1); a plurality of water permeating holes (5) are uniformly formed in the shell (1); the resistance guide rails (3) are symmetrically mounted on the inner side wall of the shell (1), and are connected with the measurement and control unit (2); the floating ball (4) is a good conductor, which is in contact with and electrically conducted with the resistance guide rails (3) through contactors (6); and under the action of floatage, the floating ball (4) is restricted by the resistance guide rails (3) during up-and-down movement. By the use of the floating ball and the resistance guide rails, a water level is measured according to the change of the resistance, and the variable-resistance type water level measurement device is high in measurement precision, simple in equipment and low in cost. The variable-resistance type water level measurement device is encapsulated in a steel pipe serving as a housing, so that the variable-resistance type water level measurement device is completely unaffected by the weather, and all-weather precise measurement can be realized; by the adoption of a barrel-shaped structure, the shell can be easily mounted in a mode of directly standing in water; the problems of debugging and the like do not need to be considered; and therefore, the variable-resistance type water level measurement device is very easy to mount.
Description
Technical field
The present invention relates to a kind of liquid level emasuring device, specifically a kind of rheostat level measurement device, belongs to technical field of liquid level measurement.
Background technology
Level measuring is widely used in every profession and trade, is mainly used in water conservancy, water power, the hydrology outdoor occasion such as open channel, reservoir, power station, ship lock, pumping plant.
At present, the level sensor mode of outdoor occasion level measuring mainly contains four kinds: float-ball type code sensor, throw-in type liquid transmitter, ultrasonic type fluid level transmitter, radar type fluid level transmitter.
The utilization of float-ball type code sensor hangs over the ball float on runner and the change of water level is mapped on the code value of the scrambler coaxial with change gear by the rotation between weight, thus measures corresponding water level.This metering system is safe and reliable, the life-span is long; Shortcoming needs to build special well logging, and well logging needs more than diameter 400mm usually, and indivedual occasions can install the well logging of diameter 100mm, but need install the repacking annexes such as angle sheave additional, and the construction of well logging can spend larger human and material resources, therefore constructs and comparatively bothers.
Throw-in type liquid transmitter is then at steel body transmitter positioned inside pressure-strain sheet, foil gauge side is communicated with ambient atmosphere by the cable with hollow tube, opposite side then contacts with testing liquid, utilizes the pressure reduction of two sides that foil gauge is out of shape, thus forms mV magnitude voltage signals corresponding to water level.This kind of mode easy construction is drop into liquid substantially; Shortcoming is that hollow tube easily blocks with cable bend, meanwhile, because foil gauge is directly long-term and by side medium contact, the time has been grown, can produce the phenomenon such as surface scale, analogue unit temperature drift drift, thus make measurement serious distortion.
Ultrasonic type fluid level transmitter is arranged on fixed position above liquid level, gets ultrasound wave by ultrasonic transducer, after chance liquid level turns back, then by transducer acquires to echo, thus confirms liquid level position.This mode is installed comparatively simple, and precision is also better, but comparatively large by weather effect, in inclement weather, almost cannot normally use.
Radar type fluid level transmitter and ultrasonic type fluid level transmitter principle of work similar, only do not use ultrasound wave, but use radar wave mode.Its impact by weather is less than ultrasound wave mode, and precision is higher.But this kind equipment is limited to very high cost and range of application is less at present.
Summary of the invention
The object of the present invention is to provide a kind of low cost, round-the-clock, precision is high and the rheostat level measurement device conveniently installed and used.
For achieving the above object, a kind of rheostat level measurement device of the present invention, comprise housing, measurement and control unit, resistance guide rail and conduction ball float, measurement and control unit is arranged on above enclosure interior, housing is uniformly distributed some permeable holes; The symmetrical holder housing madial wall of resistance guide rail, is connected with measurement and control unit; Ball float is good conductor of electricity, is conducted by tentacle and resistance guide rail contact, retrains when it moves up and down under buoyancy by resistance guide rail.
Its principle of work is: measurement and control unit, resistance guide rail, a formation resistance measurement loop between tentacle and conduction ball float; Conduction ball float fluctuates in enclosure interior under buoyancy of water effect, and the change of itself and resistance guide rail relative position causes the change of measuring resistance, and measurement and control unit goes out water level according to computing the resistor value.
The present invention utilizes ball float and resistance guide rail, and according to the measure of the change water level of resistance, measuring accuracy is high, and equipment is simple, cheap; It is the inside of shell that the present invention is encapsulated in steel pipe, therefore completely not by weather effect, can realize round-the-clock accurately measuring; Inventive shell is tubular structure, can complete installation easily, need not consider the problems such as debugging in the mode be directly erected in water, therefore installs and is very easy to.
Accompanying drawing explanation
Fig. 1 is that the present invention forms schematic diagram;
In figure: 1, housing, 2, measurement and control unit, 3, resistance guide rail, 4, conduction ball float, 5, permeable hole, 6, conductive roller, 7, tongue tube.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of rheostat level measurement device, comprise housing 1, measurement and control unit 2, resistance guide rail 3 and conduction ball float 4, measurement and control unit 2 is arranged on housing 1 inner upper, and described housing 1 is uniformly distributed some permeable holes 5; Resistance guide rail 3 symmetrical holder housing 1 madial wall, is connected with measurement and control unit 2; Ball float 4 is good conductor of electricity, to be contacted and conduct by tentacle 6 with resistance guide rail 3, retrains when it moves up and down under buoyancy by resistance guide rail 3.
Tentacle 6 can select to conduct electricity friction disc, also can select conductive roller, but conduction friction disc and resistance guide rail 6 conduct electricity by rubbing contact, time has grown conduction friction disc can be lossy, easily cause contact resistance to become large, affect measuring accuracy, the preferred conductive roller of the present invention.
Further, for guaranteeing that tentacle 6 and resistance guide rail 3 have good contact, between tentacle 6 and ball float 4, tension part is provided with.
Further, measurement and control unit 2 uses lithium battery as power supply, arranging solar panels is lithium cell charging, described housing 1 top is unmasked material, measurement and control unit 2 is provided with wireless transmission component, measurement result can pass through wireless transmission, does not need power lead and signal transmssion line, installs and uses convenient.
Further again, above-mentioned rheostat level measurement device also comprises accuracy correction unit, and described accuracy correction unit comprises the tongue tube 7 being arranged on housing 1 internal side wall fixed position and the magnet being arranged on ball float 4 inside.Due to the change of water level, when ball float 4 is through tongue tube 7, inner magnet interferes tongue tube to make dry contact action, measurement and control unit 2 draws ball float 4 location criteria information according to the signal that dry contact provides, the water level signal measured through resistance guide rail 3 with ball float 4 contrasts, can draw measuring error, measurement and control unit 2 carries out accuracy calibration according to measuring error.
Claims (5)
1. a rheostat level measurement device, comprise housing (1) and measurement and control unit (2), measurement and control unit (2) is arranged on housing (1) inner upper, it is characterized in that, also comprise resistance guide rail (3) and ball float (4), described housing (1) is uniformly distributed some permeable holes (5); Resistance guide rail (3) symmetry is arranged on housing (1) madial wall, is connected with measurement and control unit (2); Ball float (4) is good conductor, is contacted by tentacle (6) and conducts with resistance guide rail (3), by resistance guide rail (3) constraint when it moves up and down under buoyancy.
2. rheostat level measurement device according to claim 1, is characterized in that, described tentacle (6) is conductive roller.
3. rheostat level measurement device according to claim 2, is characterized in that, is provided with tension part between ball float (4) and tentacle (6).
4. the rheostat level measurement device according to the arbitrary claim of claims 1 to 3, is characterized in that, measurement and control unit (2) is with lithium battery as power supply, and arranging solar panels is lithium cell charging; Described housing (1) top is non-electromagnetic shielding material, and measurement and control unit (2) is provided with wireless transmission component.
5. rheostat level measurement device according to claim 4, it is characterized in that, also comprise accuracy correction unit, described accuracy correction unit comprises the tongue tube (7) being arranged on housing (1) internal side wall fixed position and the magnet being arranged on ball float (4) inside, when ball float 4 under buoyancy through tongue tube 7 time, the magnet of its inside interferes tongue tube to make dry contact action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502977.8A CN105203187A (en) | 2015-08-14 | 2015-08-14 | Variable-resistance type water level measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510502977.8A CN105203187A (en) | 2015-08-14 | 2015-08-14 | Variable-resistance type water level measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105203187A true CN105203187A (en) | 2015-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510502977.8A Pending CN105203187A (en) | 2015-08-14 | 2015-08-14 | Variable-resistance type water level measurement device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105203187A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895894A (en) * | 2017-02-23 | 2017-06-27 | 武汉世纪水元科技股份有限公司 | A kind of portable water-proof type wireless electron water gauge |
| CN108305538A (en) * | 2018-02-08 | 2018-07-20 | 何德学 | Conservation of momentum experimental demonstration device in a kind of physics teaching |
| CN109060078A (en) * | 2018-08-10 | 2018-12-21 | 厦门大学 | A kind of water level monitor device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933042A (en) * | 1974-04-05 | 1976-01-20 | The United States Of America As Represented By The Secretary Of The Navy | Water level gauge |
| CN2502247Y (en) * | 2001-11-04 | 2002-07-24 | 贾树宝 | Resistance-type water gage |
| CN102173055A (en) * | 2011-01-30 | 2011-09-07 | 河南工业职业技术学院 | Liquid level detection and oil liquid automatic compensation device |
| CN202903284U (en) * | 2012-11-13 | 2013-04-24 | 浙江工贸职业技术学院 | Sensor for digital type fuel gauge |
| CN204881785U (en) * | 2015-08-14 | 2015-12-16 | 徐州凌特自动化工程有限公司 | Water level measuring apparatus |
-
2015
- 2015-08-14 CN CN201510502977.8A patent/CN105203187A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933042A (en) * | 1974-04-05 | 1976-01-20 | The United States Of America As Represented By The Secretary Of The Navy | Water level gauge |
| CN2502247Y (en) * | 2001-11-04 | 2002-07-24 | 贾树宝 | Resistance-type water gage |
| CN102173055A (en) * | 2011-01-30 | 2011-09-07 | 河南工业职业技术学院 | Liquid level detection and oil liquid automatic compensation device |
| CN202903284U (en) * | 2012-11-13 | 2013-04-24 | 浙江工贸职业技术学院 | Sensor for digital type fuel gauge |
| CN204881785U (en) * | 2015-08-14 | 2015-12-16 | 徐州凌特自动化工程有限公司 | Water level measuring apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895894A (en) * | 2017-02-23 | 2017-06-27 | 武汉世纪水元科技股份有限公司 | A kind of portable water-proof type wireless electron water gauge |
| CN108305538A (en) * | 2018-02-08 | 2018-07-20 | 何德学 | Conservation of momentum experimental demonstration device in a kind of physics teaching |
| CN109060078A (en) * | 2018-08-10 | 2018-12-21 | 厦门大学 | A kind of water level monitor device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |
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| RJ01 | Rejection of invention patent application after publication |