CN207832281U - A kind of liquid level detection device - Google Patents
A kind of liquid level detection device Download PDFInfo
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- CN207832281U CN207832281U CN201721883930.1U CN201721883930U CN207832281U CN 207832281 U CN207832281 U CN 207832281U CN 201721883930 U CN201721883930 U CN 201721883930U CN 207832281 U CN207832281 U CN 207832281U
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- laser
- liquid level
- bench
- range finder
- cylinder
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Abstract
The utility model is related to a kind of liquid level detection devices.It is mainly used for the detection of high-temperature metal liquid level, especially melting environment is more severe（Under more dust interference）High-temperature metal liquid level detects, and by laser bench, and the laser range finder, pneumatic door and the cylinder that are installed on laser bench form.The detection device carries out the folding of pneumatic fire door by the action of cylinder, carrys out discontinuous and measures metal liquid level height, measures the frequency and time interval needs to control by computer according to measurement.The measuring device avoids traditional whole liquid level detection device and is susceptible to the defect that precision is inadequate, or even breaks down under harsh environments.
Description
Technical field
The present invention relates to a kind of detection devices of molten metal liquid level under detection condition of high temperature, especially 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
During non-ferrous metals casting, need to detect the height of non-ferrous metal liquid level frequently the whether equal of charging monitored
Even, what whether furnace charge added completely overflows very much, and the control for pouring fluence is also required to carry out accordingly pouring into a mould parameter according to the height of liquid level
Adjustment, etc..Thus it is possible to which the no accurate height for measuring metal liquid level is to realize a crucial detection of casting process automation
Technology.
Currently, in the market using more laser range finder generally there are two types of liquid level mode is surveyed, one 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, common problem has：Furnace inner environment is more severe, high temperature, is especially 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,
It influences range accuracy and even generates ranging failure, in addition, under this mode, some high temp glass light transmissions and reflecting properties problem,
Lead to 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 trepanning directly on bell, and laser is directly by the hole measurement melt level, and this mode easily causes laser
Damage, because trepanning is not blocked, the high-temperature flue gas in stove can directly rush at laser, and conventional laser ranging instrument, generally make
It is no more than 100 DEG C with temperature, 600 DEG C or more 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 protected in protective gas
Lower melting, direct trepanning 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,
The protecting effect of magnesium alloy fused mass will be caused bad in this way, oxidation generates a large amount of dust and makes melt quality impacted, together
Shi Fenchen can also influence the reflection of laser, and influence range accuracy.
Invention content
The purpose of the present invention is the glass transmission laser ranging structures being commonly used for current market to be easy to cause survey
Away from inaccurate, or even break down, and to be easily damaged and be easy to cause protection in stove bad for bell ranging hole open type monitoring distance meter
Present situation, exploitation is a kind of to be used under non-ferrous metal stove adverse circumstances, and it is long, high accurately to measure metal liquid level, service life
The laser liquid-level measurement device of precision.
In order to achieve the above objectives, mentality of designing of the invention is that using discontinuous level sensing, rather than routine is complete
Journey level sensing more slowly, does not need to liquid level detection device whole process sampling prison because the fluctuation of liquid level is comparatively in stove
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 operation principle invented is as follows：
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, leave the laser hole on bell have one section away from
From preventing the heat above bell from scorching measuring instrument, laser bench（2）There is heat insulation protection cover in upper end, to laser range finder（1）It carries out
Thermal insulation protection, laser range finder（1）The laser beam of injection（3）With metal liquid level（6）Planar shaped forms an angle, which is less than
85 °, conducive to pneumatic door is prevented（4）When opening, high-temperature flue gas rushes at laser range finder（1）.Laser bench（2）On laser hole（7）
There is a pneumatic door in top（4）, pneumatic door（4）By cylinder（5）It is opened and closed, 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 is closed
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：
1, 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 make it
It is ruined, extends the service life of rangefinder；
2, relative to high temp glass Nonopaque type laser range finder, it is therefore prevented that dust is adsorbed in glass surface and to laser in stove
The influence of stadia surveying precision；
3, interstitial laser rangefinder, the advantages of inheriting above two rangefinder, and the shortcomings that overcome them.
Description of the drawings：
Attached drawing 1 is a kind of front view of liquid level detection device of the present invention：
Attached drawing 2 is a kind of vertical view of liquid level detection device of the present invention：
In figure：1-laser range finder；2-laser bench；3-laser beams；4-pneumatic doors；5-cylinders；6-metal liquid levels；
7-laser holes.
Specific implementation mode：
Below by taking pouring magnesium-alloy quantitatively stove laser ranging instrument as an example, illustrate the specific embodiment party of the laser range finder
Formula.The laser bench of this laser range finder（2）For Up-Center-Down Structure, thermal isolating panel is installed in upper end, installs and swashs inside insulation cover
Optar（1）, laser bench（2）There is laser hole in lower end（7）, laser hole（7）Upper end has pneumatic door, pneumatic door to be installed on laser bench
（2）Lower end, and and cylinder（5）It is connected, laser bench（2）Lower end is connect with upper end by a metallic rod, laser range finder（1）It projects
Laser beam and metal liquid level（6）Surface is at 85 degree of angles, when ranging, cylinder（5）Backhaul pulls pneumatic fire door（4）It opens and swashs
Unthreaded hole（7）, laser beam（3）Pass through laser hole（7）, directive metal liquid level（6）Upper surface, laser beam（3）Through its reflection, into swash
Optar, to realize metal liquid level elevation carrection.
Claims (3)
1. a kind of liquid level detection device, by laser bench（2）, and it is installed on laser bench（2）On laser range finder（1）, gas
Dynamic door（4）And cylinder（5）Composition, laser range finder（1）It is installed on laser bench（2）Upper end has one section from the laser hole on bell
Distance, laser bench（2）There are heat insulation protection cover, laser bench in upper end（2）There is a laser hole in lower end（7）, laser hole（7）There is a gas in top
Dynamic door（4）, pneumatic door（4）By cylinder（5）It is opened and closed, works as pneumatic door（4）When unlatching, laser range finder（1）The laser of injection
Beam（3）It may pass through laser hole（7）It is mapped to metal liquid level（6）On.
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 in upper end, to laser range finder（1）It is thermally shielded protection, laser range finder（1）It penetrates
The laser beam gone out（3）With metal liquid level（6）Planar shaped is angled, which 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）It is opened and closed, cylinder（5）Pneumatic door is opened in backhaul（4）, laser beam（3）It can
Across laser hole（7）Directive metal liquid level（6）Upper its height of measurement, when that need not measure, cylinder（5）Ejection is closed pneumatic
Door（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883930.1U CN207832281U (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 |
|---|---|---|---|
| CN201721883930.1U CN207832281U (en) | 2017-12-28 | 2017-12-28 | A kind of liquid level detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207832281U true CN207832281U (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721883930.1U Active CN207832281U (en) | 2017-12-28 | 2017-12-28 | A kind of liquid level detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884038A (en) * | 2017-12-28 | 2018-04-06 | 湖北启宏热工设备有限公司 | A kind of liquid level detection device |
-
2017
- 2017-12-28 CN CN201721883930.1U patent/CN207832281U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884038A (en) * | 2017-12-28 | 2018-04-06 | 湖北启宏热工设备有限公司 | A kind of liquid level detection device |
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