CN107884038A - A kind of liquid level detection device - Google Patents
A kind of liquid level detection device Download PDFInfo
- Publication number
- CN107884038A CN107884038A CN201711464492.XA CN201711464492A CN107884038A CN 107884038 A CN107884038 A CN 107884038A CN 201711464492 A CN201711464492 A CN 201711464492A CN 107884038 A CN107884038 A CN 107884038A
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- CN
- China
- Prior art keywords
- laser
- liquid level
- detection device
- cylinder
- bench
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
- G01F23/292—Light, e.g. infrared or ultraviolet
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The present invention relates to a kind of liquid level detection device.It is mainly used in the detection of high-temperature metal liquid level, particularly melting environment is more severe（Under more dust interference）High-temperature metal liquid level detects, and it is by laser bench, and the laser ranging being installed on laser bench forms with, pneumatic door and cylinder.The detection means carries out the folding of pneumatic fire door by the action of cylinder, carrys out discontinuous measurement metal liquid level height, measure the frequency and time spacing needs to control by computer according to measurement.Measurement apparatus avoids the whole liquid level detection device of tradition and easily occurs the defects of precision is inadequate, even breaks down under harsh environments.
Description
Technical field
The present invention relates to a kind of detection means for detecting molten metal liquid level under the condition of high temperature, particularly have in automation
Non-ferrous metal（Magnesium alloy and aluminium alloy etc.）Foundry furnace field, tool have a broad prospect of the use.
Background technology
, it is necessary to which whether the height for detecting non-ferrous metal liquid level frequently is uniform to monitor charging during non-ferrous metals casting,
What whether furnace charge added completely overflows very much, and the control for pouring fluence is also required to carry out the tune of corresponding cast parameter according to the height of liquid level
It is whole, etc..Thus it is possible to the height of no accurate measurement metal liquid level is to realize a crucial detection skill of casting process automation
Art.
At present, in the market typically has two kinds of survey liquid level modes using more laser range finder, and one kind is in casting smelting
Laser hole is set on stove bell, high temp glass is installed on laser hole, laser beam transparent glass is mapped to the metal of casting smelting stove
On liquid level, laser range finder measures the height of metal liquid level, this mode by receiving the part reflection laser of metal bath surface
In use, in many problems, it is common the problem of have：Furnace inner environment is more severe, high temperature, is particularly beaten in non-ferrous metal
Slag or protection it is bad and when aoxidizing, high temp glass surface often deposits many dust, prevents penetrating for laser,
Influence range accuracy and even produce ranging failure, in addition, under this mode, some high temp glass printing opacities and reflecting properties problem,
Cause that rangefinder receives is frequently not the laser signal that metal liquid level reflection comes, and can also influence range accuracy；Another kind side
Formula is the perforate directly on bell, and laser straight connected the hole measurement melt level, and this mode easily causes laser
Damage, because perforate is not blocked, the high-temperature flue gas in stove can directly rush at laser, and conventional laser ranging instrument, typically make
It is no more than 100 DEG C with temperature, more than 600 DEG C of flue gas directly sprays to rangefinder surface in stove, can cause in a short period of time
The damage of rangefinder, in addition for Mg alloy smelting furnace, magnesium alloy smelting process needs the state in protective gas protection
Lower melting, direct perforate is without sealing such as on bell, and air can be caused to enter, and stove is interior or protective gas is run out of from tapping,
So that the protecting effect for causing magnesium alloy fused mass is bad, oxidation produces substantial amounts of dust and make it that melt quality is impacted, together
Shi Fenchen can also influence the reflection of laser, and influence range accuracy.
The content of the invention
The purpose of the present invention is that the glass transmission laser ranging structure being commonly used for current market easily causes to survey
Away from inaccurate, or even break down, and bell ranging hole open type monitoring distance meter is easily damaged and easily causes protection in stove bad
Present situation, exploitation one kind can use under non-ferrous metal stove adverse circumstances, and can accurate measurement metal liquid level, service life length, height
The laser liquid-level measurement device of precision.
In order to reach above-mentioned purpose, mentality of designing of the invention is, using discontinuous level sensing, rather than it is conventional complete
Journey level sensing, because the fluctuation of liquid level is comparatively in stove, more slowly, and the whole sampling prison of liquid level detection device is not needed
Control liquid level, it is only necessary to according to smelting technology feature, the sampled measurements of discontinuity.
According to above-mentioned design philosophy, the liquid level detection device fundamental diagram invented is as follows（See Fig. 1, Fig. 2）：
The liquid level detection device is by laser bench（2）, and it is installed on laser bench（2）On laser range finder（1）, pneumatic door（4）
And cylinder（5）Composition, laser range finder（1）It is installed on laser bench（2）Upper end, leaving the laser hole on bell has a segment distance,
Prevent the heat above bell from scorching measuring instrument, laser bench（2）There is heat insulation protection cover upper end, to laser range finder（1）Carry out every
Thermal protection, laser range finder（1）The laser speed of injection（3）With metal liquid level（6）Planar shaped forms an angle, and the angle is less than
85 °, beneficial to preventing pneumatic door（4）During opening, high-temperature flue gas rushes at laser range finder（1）.Laser bench（2）On laser hole（7）
There is a pneumatic door top（4）, pneumatic door（4）By cylinder（5）Carry out folding, cylinder（5）Pneumatic door is opened in backhaul（4）, laser beam
（3）It may pass through laser hole（7）Directive metal liquid level（6）Upper its liquid level of measurement, after measurement, cylinder（5）Ejection, close
Pneumatic door（4）, prevent inner flue gas of the stove or protective gas from outflowing.
The present invention has following effect compared with conventional laser range unit：
1st, the liquid level of discontinuity detection high-temperature fusant, it is therefore prevented that furnace high-temperature flue gas direct baking laser range finder, and scalded it
It is bad, extend the service life of rangefinder；
2nd, relative to high temp glass Nonopaque type laser range finder, it is therefore prevented that dust is adsorbed in glass surface and to laser ranging in stove
The influence of instrument measurement accuracy；
3rd, interstitial laser rangefinder, the advantages of inheriting above two rangefinder, and the shortcomings that overcome them.
Brief description of the drawings：
Accompanying drawing 1 is a kind of front view of liquid level detection device of the present invention：
Accompanying drawing 2 is a kind of top view of liquid level detection device of the present invention：
In figure：1-laser range finder；2-laser bench；3-laser beam；4-pneumatic door；5-cylinder；6-metal liquid level；7—
Laser hole.
Embodiment：
Below by taking pouring magnesium-alloy quantitatively stove laser ranging instrument as an example, illustrate the embodiment of the laser range finder.
The measured hole of a diameter 50mm is opened on Mg alloy smelting furnace bell, laser range finder is installed on above the hole, by stove
Detecting to correct the cast parameter of automatic ration casting equipment for liquid level, reaches in the case where fluctuation occurs in liquid level, can keep
Quantitative accuracy it is accurate, because of pouring magnesium-alloy quantitatively stove, cast at intervals of 40 ~ 90S, so control program is set, is often poured into a mould every time
Once, remaining time keeps pneumatic door to be closed to cycle detection melt level height, and laser range finder measures every time
The time that liquid level needs is no more than 5S, so in measurement, opens pneumatic door, and laser injects melt liquid level, after the completion of to be measured,
Pneumatic door is closed.The accurate of measurement data had so both been ensure that, has protected laser range finder, has prevented high-temperature flue gas from being burnt
Ruin.
Claims (3)
1. a kind of liquid level detection device, it is by laser bench（2）, and it is installed on laser bench（2）On laser ranging with（1）, gas
Dynamic door（4）And cylinder（5）Composition, for detecting metal liquid level height.
2. a kind of liquid level detection device according to claim 1, it is characterized in that：Laser range finder（1）It is installed on laser bench
（2）Upper end, laser bench（2）There is heat insulation protection cover upper end, to laser range finder（1）It is thermally shielded protection, laser range finder（1）Penetrate
The laser speed gone out（3）With metal liquid level（6）Planar shaped is angled, and the angle is less than 90 °.
3. a kind of liquid level detection device according to claim 1, it is characterized in that：Laser bench（2）On laser hole（7）Top
There is a pneumatic door（4）, pneumatic door（4）By cylinder（5）Carry out folding, cylinder（5）Pneumatic door is opened in backhaul（4）, laser beam（3）Can
Through laser hole（7）Directive metal liquid level（6）Upper its height of measurement, when that need not measure, cylinder（5）Ejection, close pneumatic
Door（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464492.XA CN107884038A (en) | 2017-12-28 | 2017-12-28 | A kind of liquid level detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711464492.XA CN107884038A (en) | 2017-12-28 | 2017-12-28 | A kind of liquid level detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107884038A true CN107884038A (en) | 2018-04-06 |
Family
ID=61770549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711464492.XA Pending CN107884038A (en) | 2017-12-28 | 2017-12-28 | A kind of liquid level detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107884038A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720418A (en) * | 2021-09-13 | 2021-11-30 | 海宁哈工我耀机器人有限公司 | Device for detecting high-temperature metal liquid level in flame and smoke environment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003315037A (en) * | 2002-04-24 | 2003-11-06 | Mitsubishi Heavy Ind Ltd | Noncontact range finder in high soot and dust environment |
| CN101905303A (en) * | 2010-08-25 | 2010-12-08 | 中南大学 | Method for detecting liquid level of high-temperature metal melt by adopting laser sensor |
| CN202453039U (en) * | 2011-10-14 | 2012-09-26 | 上海工电能源科技有限公司 | Laser liquid-level measuring device |
| CN103076065A (en) * | 2013-01-27 | 2013-05-01 | 中国科学院合肥物质科学研究院 | Laser measuring device for detecting liquid level of liquid metal |
| CN103969226A (en) * | 2014-05-14 | 2014-08-06 | 中国科学技术大学 | Laser-induced breakdown spectroscopy measurement system used in dusty and high-temperature environments and application |
| CN106513648A (en) * | 2016-12-05 | 2017-03-22 | 熊运海 | Aluminum alloy furnace |
| CN207832281U (en) * | 2017-12-28 | 2018-09-07 | 湖北启宏热工设备有限公司 | A kind of liquid level detection device |
-
2017
- 2017-12-28 CN CN201711464492.XA patent/CN107884038A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003315037A (en) * | 2002-04-24 | 2003-11-06 | Mitsubishi Heavy Ind Ltd | Noncontact range finder in high soot and dust environment |
| CN101905303A (en) * | 2010-08-25 | 2010-12-08 | 中南大学 | Method for detecting liquid level of high-temperature metal melt by adopting laser sensor |
| CN202453039U (en) * | 2011-10-14 | 2012-09-26 | 上海工电能源科技有限公司 | Laser liquid-level measuring device |
| CN103076065A (en) * | 2013-01-27 | 2013-05-01 | 中国科学院合肥物质科学研究院 | Laser measuring device for detecting liquid level of liquid metal |
| CN103969226A (en) * | 2014-05-14 | 2014-08-06 | 中国科学技术大学 | Laser-induced breakdown spectroscopy measurement system used in dusty and high-temperature environments and application |
| CN106513648A (en) * | 2016-12-05 | 2017-03-22 | 熊运海 | Aluminum alloy furnace |
| CN207832281U (en) * | 2017-12-28 | 2018-09-07 | 湖北启宏热工设备有限公司 | A kind of liquid level detection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113720418A (en) * | 2021-09-13 | 2021-11-30 | 海宁哈工我耀机器人有限公司 | Device for detecting high-temperature metal liquid level in flame and smoke environment |
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