CN105004398B - Liquid level emasuring device - Google Patents
Liquid level emasuring device Download PDFInfo
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- CN105004398B CN105004398B CN201510460525.8A CN201510460525A CN105004398B CN 105004398 B CN105004398 B CN 105004398B CN 201510460525 A CN201510460525 A CN 201510460525A CN 105004398 B CN105004398 B CN 105004398B
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Abstract
The invention discloses a kind of liquid level emasuring device, pass through the coaxial pulley of two different-diameters, in the case where liquid level excursion is larger, weight in fluid to be measured and the weight displacement in known solution are smaller, so as to substantially increase level gauging scope, and reduce device volume, present invention preferably employs optical sensor, it is effective to improve the shortcomings that traditional measurement method anti-electromagnetic interference capability is weak, and the present invention is simple in construction, it is easy to accomplish.
Description
Technical field
The invention belongs to engineering measuring technology field, and in particular to a kind of design of liquid level emasuring device.
Background technology
Liquid level is one of major parameter of process control, and liquid level sensor is the dress for detecting liquid height information
Put, throughout the every field of production and life, it has important and is widely applied level gauging in industry and daily life.
In Chemical Manufacture, it can be used for the liquid level plane of detection reaction cylinder, oil slurrying liquid level, and the liquid in chemical storage tank is put down
Face etc.；In metallurgical industry, it can be used for detecting the steel in the pipeline molten iron plane and continuously casting production process of manufacture casting
Bag liquid level；It then can be used to detect in substantial amounts of gasoline, diesel oil storage tank in petroleum industry production and storage and daily life
Level height etc., it is played a part of knowledge in industrial production and daily life.
Traditional liquid level metering system has artificial detection ruler method, magnetic upset mensuration, ultrasonic Method for Measuring, permanent buoyancy and change
Buoyancy mensuration, the methods of static pressure type mensuration, but these traditional measuring methods, anti-electromagnetic interference capability is weak, measurement range
Limited by structure.
The content of the invention
Traditional liquid level measuring method anti-electromagnetic interference capability is weak the invention aims to solving in the prior art, measurement
A kind of the problem of scope is limited by structure, it is proposed that liquid level emasuring device.
The technical scheme is that：A kind of liquid level emasuring device, including it is assembly pulley, weight group, sensor group, known molten
Liquid, container and some metal wires；
Assembly pulley includes minor diameter pulley and major diameter pulley, two pulley coaxles and diameter difference；
Weight group includes surveying liquid level weight, weight equalizer, calibration weight and measurement weight, surveys liquid level weight and balance weight
Thing is respectively by wire suspension in major diameter pulley both sides, and calibration weight and measurement weight are respectively by wire suspension in minor diameter
Pulley both sides；
Known solution is contained in container, and calibration weight and measurement weight are placed in known solution；
Sensor group includes the first calibration sensor, measurement sensor and the second calibration sensor, the first calibration sensing
Device is arranged on the metal wire of suspension calibration weight, or on calibration weight, measurement sensor is arranged on suspension and measured
On the metal wire of weight, or on measurement weight, the second calibration sensor is arranged on container inner bottom part.
Preferably, reducing gear is housed on minor diameter pulley.
Preferably, survey liquid level weight and hang on assembly pulley the same side, weight equalizer and measurement weight suspension with calibration weight
In assembly pulley the same side.
Preferably, liquid level weight is surveyed during work to be placed in fluid to be measured, weight equalizer is placed in air.
Preferably, survey liquid level weight and weight equalizer is identical in quality, calibration weight and measurement weight are identical in quality.
Preferably, the quality of weight is measured much smaller than the quality for surveying liquid level weight.
Preferably, the first calibration sensor is any one in pulling force sensor, pressure sensor and displacement transducer.
Preferably, measurement sensor is any one in pulling force sensor, pressure sensor and displacement transducer.
Preferably, the second calibration sensor is pressure sensor.
The beneficial effects of the invention are as follows：The present invention by the coaxial pulleys of two different-diameters, liquid level excursion compared with
In the case of big, the weight in fluid to be measured and the weight displacement in known solution are smaller, so as to greatly increase
Level gauging scope is added, and has reduced device volume, present invention preferably employs optical sensor, effectively improves conventional measurement
The shortcomings that amount method anti-electromagnetic interference capability is weak, and the present invention is simple in construction, it is easy to accomplish.
Brief description of the drawings
Fig. 1 is the liquid level emasuring device structural representation that the embodiment of the present invention one provides.
Fig. 2 is the liquid level emasuring device structural representation that the embodiment of the present invention two and embodiment three provide.
Description of reference numerals：1-minor diameter pulley, 2-major diameter pulley, 3-survey liquid level weight, 4-weight equalizer,
5-calibration weight, 6-measurement weight, the 7-the first calibration sensor, 8-measurement sensor, the 9-the second calibration sensor,
10-known solution, 11-container.
Embodiment
Embodiments of the invention are further described below in conjunction with the accompanying drawings.
Embodiment one：
As shown in figure 1, the embodiments of the invention provide a kind of liquid level emasuring device, including assembly pulley, weight group, sensor
Group, known solution 10, container 11 and some metal wires.
Wherein, assembly pulley includes minor diameter pulley 1 and major diameter pulley 2, two pulley coaxles and diameter difference, passes through adjustment
The diameter ratio of two pulleys, the measurement range of whole liquid level emasuring device can be adjusted.Reducing gear is housed on minor diameter pulley 1,
To reduce the amount of spin of minor diameter pulley 1, so as to avoid causing metal wire at it because the rotating cycle of minor diameter pulley 1 is excessive
On wind repeatedly, this can make the effective diameter of minor diameter pulley 1 change, and finally cause fluid to be measured level gauging produce
Error.
Weight group includes surveying liquid level weight 3, weight equalizer 4, calibration weight 5 and measurement weight 6.Survey the He of liquid level weight 3
Weight equalizer 4 is hanged by metal wire respectively by wire suspension in the both sides of major diameter pulley 2, calibration weight 5 and measurement weight 6 respectively
It is hung on the both sides of minor diameter pulley 1.Survey liquid level weight 3 and hang on assembly pulley the same side, weight equalizer 4 and measurement with calibration weight 5
Weight 6 hangs on assembly pulley the same side.Survey liquid level weight 3 and weight equalizer 4 is identical in quality, calibration weight 5 and the measurement matter of weight 6
Measure quality of the quality much smaller than survey liquid level weight 3 that be identical, and measuring weight 6.
Known solution 10 is contained in container 11, and calibration weight 5 and measurement weight 6 are placed in known solution 10.Work
When, survey liquid level weight 3 and be placed in fluid to be measured, weight equalizer 4 is placed in air.
Sensor group includes the first calibration sensor 7, the calibration sensor 9 of measurement sensor 8 and second.The present invention is implemented
In example, the first calibration sensor 7 is pulling force sensor, on the metal wire of suspension calibration weight 5；Measurement sensor 8 is
Pulling force sensor, on the metal wire of suspension measurement weight 6；Second calibration sensor 9 is pressure sensor, installed in appearance
The inner bottom part of device 11.
The operation principle and process for the liquid level emasuring device that the embodiment of the present invention is provided are as follows：
In the case where liquid level emasuring device does not carry out level gauging, the first calibration sensor 7 and measurement sensor 8 it is defeated
Output F7And F8There is following relation：F7=F8。
The survey liquid level weight 3 of liquid level emasuring device is put into fluid to be measured, liquid level weight 3 is surveyed and is made by fluid to be measured buoyancy
With liquid level emasuring device balance is broken, certain altitude can be risen by surveying liquid level weight 3, meanwhile, measurement weight 6 highly declines,
Calibration weight 5 highly rises, and because the diameter of two coaxial pulleys is different, surveys liquid level weight 3, measurement weight 6 and calibration
Equally there is the shift length of weight 5 certain proportionate relationship (to survey liquid level weight 3 and measure the shift length ratio and two of weight 6
Diameter of pulley ratio is proportional, and measurement weight 6 is identical with the calibration shift length of weight 5), pass through known measurement sensor
8 output quantity F8, it is possible to accurately now surveyed depth of the liquid level weight 3 in fluid to be measured.
When fluid to be measured liquid level changes, liquid level emasuring device can reach a new poised state, now, equally
Can according to it is known to the output quantity F of measurement sensor 88The depth for surveying liquid level weight 3 in fluid to be measured is accurately obtained, and then
Obtain the situation of change of liquid level.
Because calibration weight 5 and measurement weight 6 are suspended on same pulley both sides, therefore, its displacement should be equal,
Under the conditions of knowing that solution 10 is unvaporized, F7+F8For a constant, pass through F7+F8The variable quantity of output, it is possible to which accurate alignment is
The evaporation situation of solution 10 is known, so as to calibrate fluid to be measured liquid level situation of change.
The liquid level situation of change of known solution 10 can be measured by being pasted onto the second calibration sensor 9 of the bottom of container 11,
Under the conditions of known solution 10 is unvaporized, the change of fluid to be measured liquid level will not cause the liquid level of known solution 10 to change, from
And by the exporting change situation of the second calibration sensor 9, it can calibrate and be surveyed caused by known solution 10 itself evaporates
Measure the change of fluid to be measured liquid level and produce error.
Embodiment two：
As shown in Fig. 2 first calibration sensor 7 passes for pressure in a kind of liquid level emasuring device provided in an embodiment of the present invention
Sensor, on calibration weight 5；Measurement sensor 8 is pressure sensor, on measurement weight 6.Liquid level emasuring device
Remaining structure and its operation principle and process it is identical with embodiment one.
Embodiment three：
As shown in Fig. 2 first calibration sensor 7 passes for displacement in a kind of liquid level emasuring device provided in an embodiment of the present invention
Sensor, on calibration weight 5；Measurement sensor 8 is displacement transducer, on measurement weight 6.Liquid level emasuring device
Remaining structure and its operation principle and process it is identical with embodiment one.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such especially statement and embodiment.This area
Those of ordinary skill can make according to these technical inspirations disclosed by the invention various does not depart from the other each of essence of the invention
The specific deformation of kind and combination, these deform and combined still within the scope of the present invention.
Claims (5)
1. a kind of liquid level emasuring device, it is characterised in that including assembly pulley, weight group, sensor group, known solution (10), appearance
Device (11) and some metal wires；
The assembly pulley includes minor diameter pulley (1) and major diameter pulley (2), two pulley coaxles and diameter difference；
The weight group includes surveying liquid level weight (3), weight equalizer (4), calibration weight (5) and measurement weight (6)；The survey
Liquid level weight (3) and weight equalizer (4) are respectively by wire suspension in major diameter pulley (2) both sides；It is described calibration weight (5) and
Weight (6) is measured respectively by wire suspension in minor diameter pulley (1) both sides；
The known solution (10) is contained in container (11)；The calibration weight (5) and measurement weight (6) are placed in known molten
In liquid (10)；
During work, the survey liquid level weight (3) is placed in fluid to be measured, and the weight equalizer (4) is placed in air, the survey liquid
Position weight (3) hangs on assembly pulley the same side, the weight equalizer (4) and the measurement weight (6) with the calibration weight (5)
Hang on assembly pulley the same side；The survey liquid level weight (3) and the weight equalizer (4) are identical in quality, the calibration weight (5)
It is identical in quality with the measurement weight (6), and the quality of the measurement weight (6) is much smaller than the survey liquid level weight (3)
Quality；
The sensor group includes the first calibration sensor (7), measurement sensor (8) and the second calibration sensor (9)；It is described
First calibration sensor (7) is arranged on the metal wire of suspension calibration weight (5), or on calibration weight (5)；It is described
Measurement sensor (8) is arranged on the metal wire of suspension measurement weight (6), or on measurement weight (6)；Described second
Calibration sensor (9) is arranged on container (11) inner bottom part.
2. liquid level emasuring device according to claim 1, it is characterised in that equipped with deceleration on the minor diameter pulley (1)
Mechanism.
3. liquid level emasuring device according to claim 1, it is characterised in that first calibration sensor (7) is pulling force
Any one in sensor, pressure sensor and displacement transducer.
4. liquid level emasuring device according to claim 1, it is characterised in that the measurement sensor (8) is pull sensing
Any one in device, pressure sensor and displacement transducer.
5. liquid level emasuring device according to claim 1, it is characterised in that second calibration sensor (9) is pressure
Sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460525.8A CN105004398B (en) | 2015-07-30 | 2015-07-30 | Liquid level emasuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460525.8A CN105004398B (en) | 2015-07-30 | 2015-07-30 | Liquid level emasuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105004398A CN105004398A (en) | 2015-10-28 |
| CN105004398B true CN105004398B (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510460525.8A Active CN105004398B (en) | 2015-07-30 | 2015-07-30 | Liquid level emasuring device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161910Y (en) * | 1993-08-25 | 1994-04-13 | 王文瑞 | Optical code liquid level indicator |
| CN2879138Y (en) * | 2006-04-11 | 2007-03-14 | 燕永存 | Float type liquid lever meter |
| CN101464177A (en) * | 2009-01-12 | 2009-06-24 | 郑贵林 | Liquid level detection type self-calibration high-precision water gauge |
| CN204854871U (en) * | 2015-07-30 | 2015-12-09 | 电子科技大学 | Liquid level measurer |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010164503A (en) * | 2009-01-19 | 2010-07-29 | Fuji Controls Co Ltd | Liquid level measuring device |
| CN102353423B (en) * | 2011-07-14 | 2012-11-14 | 苏州苏控自动化设备有限公司 | Homotaxial magnetic turning column liquid level meter |
-
2015
- 2015-07-30 CN CN201510460525.8A patent/CN105004398B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2161910Y (en) * | 1993-08-25 | 1994-04-13 | 王文瑞 | Optical code liquid level indicator |
| CN2879138Y (en) * | 2006-04-11 | 2007-03-14 | 燕永存 | Float type liquid lever meter |
| CN101464177A (en) * | 2009-01-12 | 2009-06-24 | 郑贵林 | Liquid level detection type self-calibration high-precision water gauge |
| CN204854871U (en) * | 2015-07-30 | 2015-12-09 | 电子科技大学 | Liquid level measurer |
Non-Patent Citations (1)
| Title |
|---|
| 浮子式液位测量系统的研制;姚宇翔;《中国优秀硕士学位论文全文数据库 信息科技辑》;20090215;第I140-388页 * |
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| Publication number | Publication date |
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| CN105004398A (en) | 2015-10-28 |
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