CN203940899U - A kind of aluminium liquid lower limit proving installation - Google Patents
A kind of aluminium liquid lower limit proving installation Download PDFInfo
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- CN203940899U CN203940899U CN201420404680.9U CN201420404680U CN203940899U CN 203940899 U CN203940899 U CN 203940899U CN 201420404680 U CN201420404680 U CN 201420404680U CN 203940899 U CN203940899 U CN 203940899U
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- Prior art keywords
- aluminium liquid
- lower limit
- aluminium
- proving installation
- metal probe
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Abstract
The utility model relates to a kind of liquid level proving installation of liquid non-ferrous metal, especially a kind of aluminium liquid lower limit proving installation.Described aluminium liquid lower limit proving installation, comprise molten aluminium stove, metal probe A, in addition, also comprise temperature sensing device, control device, warning device, described temperature sensing device, temperature control equipment, warning device and metal probe A form loop, and described metal probe A only extends to aluminium liquid upper limit from described molten aluminium furnace upper end, and described temperature sensing device only extends to aluminium liquid lower limit from described molten aluminium furnace upper end.The beneficial effects of the utility model are: the utility model is by thermopair and protection tube; changing the position signalling of aluminium liquid lower limit into temperature signal shows by temperature controller; thereby ensure the stable operation of automatic liquid supply device by the warning of warning device; also avoid the trouble of frequent replacing metal probe simultaneously, saved production cost and human cost.
Description
Technical field
The utility model relates to a kind of liquid level proving installation of liquid non-ferrous metal, especially a kind of aluminium liquid lower limit proving installation.
Background technology
The test of aluminium liquid lower limit generally needs two metal probes, and metal probe must be inserted in aluminium liquid, and aluminium and aluminium alloy aggressivity under molten condition is very strong, particularly aluminium slag, the corrosivity such as its composition cryolite, lustrous and transparent spar, fluorine alumina are very strong, make generally be no more than 10 days the serviceable life of metal probe, not only work efficiency is lower to change so frequently metal probe, production cost, human cost are also increased, make the automatic liquid supply device can not steady operation simultaneously, how to address these problems and become industry problem demanding prompt solution.
Utility model content
For the weak point existing in the problems referred to above, the utility model provides that a kind of cost is lower, efficiency is higher, can ensure the aluminium liquid lower limit proving installation of automatic liquid supply device steady operation.
For achieving the above object, the utility model provides a kind of aluminium liquid lower limit proving installation, comprises molten aluminium stove, metal probe A, and described metal probe A is 2, for testing aluminium liquid upper limit; In addition, also comprise temperature sensing device, control device, warning device, described temperature sensing device, temperature control equipment, warning device and metal probe A form loop, described metal probe A only extends to aluminium liquid upper limit from described molten aluminium furnace upper end, and described temperature sensing device only extends to aluminium liquid lower limit from described molten aluminium furnace upper end.
Preferably, described temperature sensing device is made up of thermopair and protection tube, and described protection tube is enclosed within thermopair outside, and the lower end of thermopair is near protection tube inner chamber bottom surface, and described protection tube is selected from Si
3n
4protection tube and Si
3n
4one in-SiC protection tube.
Preferably, described control device is temperature controller.
Preferably, described warning device is bi-coloured light acoustic alarm device.
The beneficial effects of the utility model are: the utility model adopts Si
3n
4or Si
3n
4-SiC is as the material of protection tube, and silicon nitride Si
3n
4or silicon nitride combined silicon carbide Si
3n
4-SiC is that current anti-aluminium liquid corrodes best bi-material, can use more than 1 year in aluminium liquid, simultaneously, because aluminium and silicon nitride are all highly heat-conductive materials, the coefficient of heat conductivity of air is lower, when aluminium liquid is during higher than lower limit, the protection tube that contains silicon nitride passes to the temperature of thermopair and the actual temperature difference of aluminium liquid is little, and when aluminium liquid is during lower than lower limit, the protection tube that contains silicon nitride passes to the temperature of thermopair and the actual temperature difference of aluminium liquid is larger, thermocouple assay temperature sharply declines, and probe temperature can show by temperature controller, when this temperature is during lower than set temperature on temperature controller, warning device will be reported to the police, thereby send the signal that needs additive liq.That is to say that the utility model changes position signalling into temperature signal output, thereby ensure the stable operation of automatic liquid supply device, avoided the trouble of frequent replacing metal probe, saved production cost and human cost.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1, molten aluminium stove; 2, metal probe A; 3, protection tube; 4, thermopair; 5, bi-coloured light acoustic alarm device; 6, temperature controller;
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further explained.
A kind of aluminium liquid lower limit proving installation described in the utility model embodiment, as shown in Figure 1, comprises molten aluminium stove 1, metal probe A2, and described metal probe A2 is 2, for testing aluminium liquid upper limit; In addition, also comprise thermopair 4, protection tube 3, temperature controller 6, bi-coloured light acoustic alarm device 5, described protection tube 3 is enclosed within thermopair 4 outsides, and the lower end of thermopair 4 is near protection tube 3 inner chamber bottom surfaces, and described protection tube 3 is selected from Si
3n
4protection tube and Si
3n
4one in-SiC protection tube; described thermopair 4, temperature controller 6, bi-coloured light acoustic alarm device 5 pass through connection with metal probe A2; described metal probe A2 only extends to aluminium liquid upper limit from described molten aluminium stove 1 upper end, described protection tube 3 only extends to aluminium liquid lower limit from described molten aluminium stove 1 upper end.
The utility model adopts the additional silicon nitride Si of thermopair 4
3n
4or silicon nitride combined silicon carbide Si
3n
4-SiC protection tube 3, replaces original metal probe, both can prevent that metal probe is corroded, and has avoided the trouble of frequent replacing metal probe, has also saved production cost and human cost simultaneously, has ensured the stable operation of automatic liquid supply device.
Specific works principle is: when liquid aluminum is during higher than lower limit, because aluminium coefficient of heat conductivity is very high, 20 DEG C time, be 203.5w/ (m DEG C), silicon nitride is also highly heat-conductive material, 20 DEG C time, coefficient of heat conductivity is 16.7w/ (m DEG C), therefore the temperature that thermopair 4 senses is substantially identical with aluminium liquid actual temperature, and can respond to rapidly; When aluminium liquid is during lower than protection tube lower end; between aluminium liquid and protection tube 3 across air; and the coefficient of heat conductivity of air in the time of 700 DEG C only has 0.0671w/ (m DEG C); so the probe temperature that thermopair 4 senses sharply declines; probe temperature and aluminium liquid actual temperature have formed larger temperature difference; the temperature value now showing on temperature controller 6 is lower than technique minimum temperature; these temperature controller 6 actuatings of relay; and then connect bi-coloured light acoustic alarm device 5 and automatically control watering system, thereby realize automatic liquid supply.
Due to silicon nitride Si
3n
4or silicon nitride combined silicon carbide Si
3n
4-SiC is that current anti-aluminium liquid corrodes best bi-material, can use one to two year in aluminium liquid, so device provides reliable guarantee to the stable operation of production line for aluminium liquid automatic makeup.
Only as described above, be only preferred embodiment of the present utility model, such as professional who are familiar with this art.After understanding technological means of the present utility model, natural energy, according to actual needs, is changed under instruction of the present utility model.Therefore all equal variation and modifications of doing according to the utility model claim, all should still belong in the scope that the utility model patent contains.
Claims (6)
1. an aluminium liquid lower limit proving installation, comprise molten aluminium stove, metal probe A, it is characterized in that: also comprise temperature sensing device, control device, warning device, described temperature sensing device, temperature control equipment, warning device and metal probe A form loop, described metal probe A only extends to aluminium liquid upper limit from described molten aluminium furnace upper end, and described temperature sensing device only extends to aluminium liquid lower limit from described molten aluminium furnace upper end.
2. aluminium liquid lower limit proving installation as claimed in claim 1, is characterized in that: described temperature sensing device is made up of thermopair and protection tube, and described protection tube is enclosed within thermopair outside, and the lower end of thermopair is near protection tube inner chamber bottom surface.
3. aluminium liquid lower limit proving installation as claimed in claim 1, is characterized in that: described control device is temperature controller.
4. aluminium liquid lower limit proving installation as claimed in claim 1, is characterized in that: described warning device is bi-coloured light acoustic alarm device.
5. aluminium liquid lower limit proving installation as claimed in claim 1, is characterized in that: described metal probe A is 2, for testing aluminium liquid upper limit.
6. aluminium liquid lower limit proving installation as claimed in claim 1, is characterized in that: described protection tube is selected from Si
3n
4protection tube, Si
3n
4any one in-SiC protection tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404680.9U CN203940899U (en) | 2014-07-21 | 2014-07-21 | A kind of aluminium liquid lower limit proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404680.9U CN203940899U (en) | 2014-07-21 | 2014-07-21 | A kind of aluminium liquid lower limit proving installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203940899U true CN203940899U (en) | 2014-11-12 |
Family
ID=51860207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420404680.9U Expired - Fee Related CN203940899U (en) | 2014-07-21 | 2014-07-21 | A kind of aluminium liquid lower limit proving installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203940899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101403A (en) * | 2014-07-21 | 2014-10-15 | 南通高新工业炉有限公司 | Testing device for lower limit of molten aluminum |
-
2014
- 2014-07-21 CN CN201420404680.9U patent/CN203940899U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101403A (en) * | 2014-07-21 | 2014-10-15 | 南通高新工业炉有限公司 | Testing device for lower limit of molten aluminum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20200721 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |