CN200975907Y - Water coal slurry level laser measuring apparatus - Google Patents
Water coal slurry level laser measuring apparatus Download PDFInfo
- Publication number
- CN200975907Y CN200975907Y CN 200620117890 CN200620117890U CN200975907Y CN 200975907 Y CN200975907 Y CN 200975907Y CN 200620117890 CN200620117890 CN 200620117890 CN 200620117890 U CN200620117890 U CN 200620117890U CN 200975907 Y CN200975907 Y CN 200975907Y
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- liquid level
- water mixture
- coal water
- range finder
- integrated chip
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000003250 coal slurry Substances 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 239000003245 coal Substances 0.000 claims abstract description 46
- 239000000203 mixture Substances 0.000 claims abstract description 43
- 239000002002 slurry Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 102220090095 rs1042713 Human genes 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005211 surface analysis Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses a laser measuring apparatus for coal water mixture level, which is composed of a barrel of coal water mixture and a laser range finder that is arranged on the top of the barrel; an outlet of the laser range finder is connected with an inlet of a conversion circuit of the laser range finder; S of the apparatus is the range-height from the bottom of the coal water mixture barrel to the laser emitting and sending device, D is the actual measuring range-height, L is the actual range-height of the liquid level of the coal water mixture after measuring; while L=S-D; wherein, S is a fixed value, the value of D is measured by the laser measuring apparatus, and the value of L which represents the actual range-height is obtained. The measuring values is converted by the conversion circuit and connected with the liquid level indicator of coal water mixture; the fan-out of the conversion circuit is connected with the indicating apparatus for the liquid total amount; and at the same time the low liquid level and the high liquid level can be alarmed.
Description
Technical field
The utility model discloses a kind of measurement mechanism, particularly a kind of slurry position laser measuring device for measuring that is applied in the coal water mixture process.
Background technology
Coal water mixture is a kind of novel clean energy, and the reserves of China's coal are very abundant, and coal water mixture has long-range prospect as a branch of coal deep processing.
In production technology, the medicament of the coal according to 70% and an amount of water and 1%, the continuous feeding mouth that joins bowl mill, through pulverizing after a while, outlet by bowl mill connects the outflow coal water mixture, by helicoidal pump coal water mixture is transported to storage tank, in storage tank, continues to stir, enter other jar buffer memory then by process requirements.
In coal water mixture preparation technology, the measurement of slurry position is indispensable.But because having thickness, coal water mixture easily does, solid-liquid two-phase characteristics, and liquid level big ups and downs when stirring in addition are so measurement brings very big difficulty to liquid level.Divide the medium that the inapplicable thickness of touch sensor is easily done, non-contacting sensor incompatibility liquid level big ups and downs characteristics from the sensor condition of compatibility.
In order to address the above problem, Floating Ball Liquid Level instrument, liquid level that front and back occurred are directly perceived, reliable, economic, practical, but measuring error is big.Though the integrated pressure table has solved the deposition problems of stressed end face, can only be used for static measurement, can not be used for kinetic measurement.Ultrasonic liquid leveller is because the sine of incident angle and the ratio of the sine of reflection angle equal the ratio of both velocities of wave, velocity of wave is identical in same media plane, incident angle equals reflection angle, if but liquid level is apart from detector variation range 4-1M, during 5 ° at liquid level pitch angle, then reflection wave is distributed in apart between the probe 0.76M-0.705M, can only collect certain a bit of reflection wave, can not survey whole ranges.The use face that facts have proved ultrasonic liquid leveller is narrow.Though microwave measuring instrument has had a little improvement than ultrasonic meter, because hydrone is very strong to the absorption of microwave, will make reflection wave very faint, therefore increase the measurement difficulty, and influenced its measuring accuracy.
The utility model content
The purpose of this utility model is, provides a kind of coal water mixture slurry position laser measuring device for measuring, to solve the low problem of measuring accuracy under the dynamical state that exists at present in coal water mixture slurry bit test.
The utility model is to adopt following technological means to realize:
A kind of coal water mixture is starched the position laser measuring device for measuring, comprises coal water mixture bucket and side's disposed thereon laser range finder; The output terminal of described laser range finder is connected with the input end of laser range finder change-over circuit; The output terminal of above-mentioned change-over circuit connects the input end of coal water mixture slurry position display instrument and coal water mixture slurry position control circuit respectively;
Above-mentioned laser range finder change-over circuit, the input end of its liquid level signal is connected with the output terminal of laser range finder; Its detected liquid level signal is input to the in-phase input end of IC1; The output valve of the IC2 of the output signal of IC1 and liquid level setting value is input to the IC3 input end; IC3 amplifies the difference signal of its input, and its output terminal connects the normal phase input end of the IC4 that calculates total amount of liquid, to show the actual liquid level difference; IC3 is input to the IC4 that calculates total amount of liquid with its output signal, and simultaneously its output signal is input to the inverting input of the IC5 that controls low liquid level warning and the normal phase input end of the IC6 of control high liquid level warning respectively.
Aforesaid laser range finder change-over circuit makes R4 and R3 dividing potential drop obtain setting by adjusting R4 and obtains partial pressure value.
Aforesaid laser range finder change-over circuit is by floorage at the bottom of regulating R9 enlargement factor being equaled jar.
Aforesaid laser range finder change-over circuit is by the low liquid level signal threshold values of R13 control.
Aforesaid laser range finder change-over circuit is controlled high liquid level signal threshold values by R17.
The utility model compared with prior art has remarkable advantages and beneficial effect:
A kind of coal water mixture slurry of the utility model position laser measuring device for measuring has solved a conventional art difficult problem, has utilized the high directivity of laser, has the height depth of parallelism, the characteristics of concentration of energy, laser beam are mapped to any position on the coal water mixture inclined-plane of violent rotation, can overcome the signal attenuation of longer distance.Simultaneously, also have the function that detects flow, saved electromagnetic flowmeter.From the total amount that the height of liquid level can be converted slurry, can convert instantaneous delivery from the transient change amount of liquid level, can obtain integrated flow from the integration of certain time period of liquid level.
Description of drawings
Fig. 1 is the utility model laser measuring device for measuring synoptic diagram;
Fig. 2 is a laser measuring device for measuring change-over circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is illustrated:
See also shown in Figure 1ly, be the utility model laser measuring device for measuring synoptic diagram; As can be seen from the figure, 1 is the coal water mixture jar, 110 is a jar interior coal water mixture, 2 for being arranged on the stirring motor above the coal water mixture jar, 21 is the axostylus axostyle of stirring motor, 22 are arranged on stirring axostylus axostyle 21 ends, and be deep in the coal water mixture its flabellum that stirs 22,11 for being arranged on the coal water mixture escape hole of coal water mixture jar side-lower, a side that above coal water mixture, departs from stirring motor, be provided with coal water mixture laser range finder 3, below laser range finder, be provided with Laser emission and the sensing device 32 of aiming at the coal water mixture liquid level, in its laser range finder, also be provided with photoelectric coupling circuit and sensor (not shown);
What be connected with laser range finder is that the conversion of signals that the light signal of laser measurement is exported by photoelectric coupling circuit is to measure the change-over circuit 6 of shows signal.
S among the figure is from the coal water mixture pot bottom to Laser emission and the distance height of sensing device 32, and D is a laser beam emitting device 32 to the actual measurement of coal water mixture liquid level apart from height, and L is the actual range height of coal water mixture liquid level after measuring; From figure, can analyze its L=S-D; Wherein, S is a fixed value, only measures the D value, just can know the actual liquid level L value of coal water mixture.
The coal water mixture liquid level forms a funnel-form vortex during for stirring, as shown in Figure 1 10, because the characteristics that laser had, when the laser beam incident of a branch of φ=3mm in any one scope of this whirlpool, analyze from microcosmic, because inclined-plane 10 is not absolute level and smooth, the fact is verified, always there is an atomic little plane that the former road of incident light is returned, and accepted by sensor.Why this instrument can be measured chamfer distance and utilize this Shu Guang just.But that laser reactive only is direct range D, is not the indirect distance L of reaction liquid level.The transfer process of following this circuit of surface analysis:
See also shown in Figure 2ly, be the schematic diagram of laser measuring device for measuring change-over circuit 6, at first, take out the reflection liquid levels from laser range finder 3 and insert the in-phase input end of IC1 to the signal of sensor distance D, IC1 there is no gain effect to this signal, just improves input impedance.In IC2, make R4 and resistance R 3 dividing potential drops obtain setting value by adjusting resistance R 4 and equal S.Integrated chip IC2 and IC1 do not have amplification equally, just are provided with in order to increase input impedance.More than two signals compare at IC3 and obtain an actual liquid level difference L.
IC4 is used for calculating total amount of liquid Q, and its principle is total amount of liquid=liquid level * jar floorage, in-phase input end input liquid level L value, by adjusting resistance R 9 enlargement factor is equaled jar at the bottom of floorage.
Low liquid level warning signal is at first regulated resistance R 13 and is made end liquid level warning signal threshold value=R13/R14.When the L signal is lower than setting threshold, obtain one on the occasion of making the triode conducting at the IC5 output terminal so, low liquid level signal descends to triggering and reports to the police.When L is higher than low liquid level signal, then produces negative value triode is ended at IC5 output terminal WL.
High liquid level warning is at first regulated resistance R 17 and is made R17/R16=high liquid level warning signal threshold value, when L is higher than high liquid level signal, the IC6 output terminal is reported to the police for just making the triode conducting, and when L was lower than high liquid level signal, output terminal was a negative value, triode is ended, then do not produce high liquid level warning.What the above in an embodiment ICI～IC6 that need illustrate adopted all is 0P07 integrated chip operational amplifier, but also can adopt other to have the amplifier of similar functions.
It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this instructions has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of utility model, and it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (5)
1, a kind of coal water mixture is starched the position laser measuring device for measuring, comprises coal water mixture bucket and side's disposed thereon laser range finder; It is characterized in that: the output terminal of laser range finder is connected with the input end of laser range finder change-over circuit; The output terminal of above-mentioned change-over circuit connects the input end of coal water mixture slurry position display instrument and coal water mixture slurry position control circuit respectively;
Above-mentioned laser range finder change-over circuit, the input end of its liquid level signal is connected with the output terminal of laser range finder; Its detected liquid level signal is input to the in-phase input end of integrated chip IC1; The output valve of the integrated chip IC2 of the output signal of integrated chip IC1 and liquid level setting value is input to integrated chip IC3 input end; Integrated chip IC3 amplifies the difference signal of its input, and its output terminal connects the normal phase input end of the integrated chip IC4 that calculates total amount of liquid, to show the actual liquid level difference; Integrated chip IC3 is input to the integrated chip IC4 that calculates total amount of liquid with its output signal, and simultaneously its output signal is input to the inverting input of the integrated chip IC5 that controls low liquid level warning and the normal phase input end of the integrated chip IC6 of control high liquid level warning respectively.
2, a coal water mixture slurry laser measuring device for measuring according to claim 1, it is characterized in that: described laser range finder change-over circuit, resistance R 4 is for setting the divider resistance of partial pressure value.
3, a coal water mixture according to claim 1 slurry position laser measuring device for measuring is characterized in that: described laser range finder change-over circuit, resistance R 9 is the adjusting resistance of floorage at the bottom of making enlargement factor and equaling jar.
4, a coal water mixture slurry laser measuring device for measuring according to claim 1, it is characterized in that: described laser range finder change-over circuit, resistance R 13 is the controlling resistance of low liquid level signal threshold values.
5, a coal water mixture slurry laser measuring device for measuring according to claim 1, it is characterized in that: described laser range finder change-over circuit, resistance R 17 is the controlling resistance of high liquid level signal threshold values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620117890 CN200975907Y (en) | 2006-05-30 | 2006-05-30 | Water coal slurry level laser measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620117890 CN200975907Y (en) | 2006-05-30 | 2006-05-30 | Water coal slurry level laser measuring apparatus |
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| CN200975907Y true CN200975907Y (en) | 2007-11-14 |
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| CN 200620117890 Expired - Fee Related CN200975907Y (en) | 2006-05-30 | 2006-05-30 | Water coal slurry level laser measuring apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865714A (en) * | 2010-06-28 | 2010-10-20 | 三一重工股份有限公司 | Mortar truck, and finished product bucket volume detection system and method thereof |
| CN101886943A (en) * | 2010-06-13 | 2010-11-17 | 北京市三一重机有限公司 | Liquid level measurer for mortar box or mud box |
| CN102426044A (en) * | 2011-11-08 | 2012-04-25 | 西安航天自动化股份有限公司 | Liquid level measurement system for float bowl of hydraulic power floating type ship elevator |
| CN102023044B (en) * | 2009-09-16 | 2013-04-17 | 戈文燕 | Direct measuring device and direct measuring method for loading capacity of grinder equipment |
| CN104406653A (en) * | 2014-11-21 | 2015-03-11 | 国家电网公司 | Water level monitoring alarm system |
-
2006
- 2006-05-30 CN CN 200620117890 patent/CN200975907Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023044B (en) * | 2009-09-16 | 2013-04-17 | 戈文燕 | Direct measuring device and direct measuring method for loading capacity of grinder equipment |
| CN101886943A (en) * | 2010-06-13 | 2010-11-17 | 北京市三一重机有限公司 | Liquid level measurer for mortar box or mud box |
| CN101865714A (en) * | 2010-06-28 | 2010-10-20 | 三一重工股份有限公司 | Mortar truck, and finished product bucket volume detection system and method thereof |
| CN101865714B (en) * | 2010-06-28 | 2011-11-16 | 三一重工股份有限公司 | Mortar truck, and finished product bucket volume detection system and method thereof |
| CN102426044A (en) * | 2011-11-08 | 2012-04-25 | 西安航天自动化股份有限公司 | Liquid level measurement system for float bowl of hydraulic power floating type ship elevator |
| CN104406653A (en) * | 2014-11-21 | 2015-03-11 | 国家电网公司 | Water level monitoring alarm system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |