CN202485415U - Runout-preventive alarm device of medium-frequency induction furnace - Google Patents
Runout-preventive alarm device of medium-frequency induction furnace Download PDFInfo
- Publication number
- CN202485415U CN202485415U CN2012201092223U CN201220109222U CN202485415U CN 202485415 U CN202485415 U CN 202485415U CN 2012201092223 U CN2012201092223 U CN 2012201092223U CN 201220109222 U CN201220109222 U CN 201220109222U CN 202485415 U CN202485415 U CN 202485415U
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- potentiometer
- runout
- comparison circuit
- alarm device
- detection circuit
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Abstract
The utility model discloses a runout-preventive alarm device of a medium-frequency induction furnace. The alarm device comprises a detection circuit, a comparison circuit and an alarm, the detection circuit consists of a reactor, a potentiometer and an ammeter which are connected in series, the comparison circuit comprises a resistor and a potentiometer which are connected in series, a variable end of the potentiometer of the comparison circuit is connected to an anode end of a signal comparator, the detection circuit is connected between the resistor and the potentiometer of the comparison circuit, and an output end of the signal comparator is connected with the alarm. The runout-preventive alarm device is simple in structure, and can assist equipment management staff to correctly judge the service condition of a furnace lining, and problems that the furnace lining is knocked out prematurely to be rebuilt due to worry over runout and unnecessary labor and material waste is caused are avoided.
Description
Technical field
The utility model belongs to metallurgical control technology field, relates in particular to the anti-runout warning device of a kind of medium-frequency induction furnace.
Background technology
The lining thickness of crucible type induction melting furnace is about 120mm, and in running, the meeting attenuation of prolongation furnace wall, furnace lining formation crackle along with service time all can cause the generation of runout accident.If the runout accident can not in time be found, dispose, the lighter burns out induction coil and yoke, and weight person burns out the induction coil copper pipe, and the copper liquid of high temperature contacts with cooling water and sets off an explosion, and jeopardizes equipment and personal safety.
The utility model content
The utility model is exactly the deficiency to prior art, proposes the anti-runout warning device of a kind of medium-frequency induction furnace.
Above-mentioned purpose realizes through following proposal:
A kind of medium-frequency induction furnace is prevented the runout warning device, it is characterized in that said warning device comprises detection circuit, comparison circuit and alarm; Said detection circuit comprises reactor, potentiometer and the ammeter of series connection; Said comparison circuit comprises the resistance and the potentiometer of series connection, and is connected to the positive terminal of signal comparator at the convertible tip of the potentiometer of said comparison circuit, and said detection circuit is connected between the resistance and potentiometer of said comparison circuit; Output at said signal comparator is connected with alarm.
The beneficial effect of the utility model: the medium frequency induction melting furnace of the utility model is prevented the runout warning device; Have simple in structure, with low cost; Can help equipment management personnel to judge the operating position of furnace lining exactly; Avoid too early furnace lining being destroyed rebuilding, cause unnecessary human and material resources waste because of the worry runout.The engineers and technicians of handled easily and maintenance judge the light and heavy degree of runout, prevent the generation and the expansion of runout accident, deal carefully with the copper liquid in the stove in advance, are reduced to bottom line to the loss that causes.Help ensuring safety in production.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Referring to Fig. 1, the anti-runout warning device of the medium-frequency induction furnace of the utility model comprises detection circuit, comparison circuit and alarm; Detection circuit comprises reactor 1, potentiometer 2 and the ammeter 3 of series connection; Comparison circuit comprises the resistance 4 and potentiometer 5 of series connection, and is connected to the positive terminal of signal comparator 6 at the convertible tip of the potentiometer 5 of comparison circuit, and detection circuit is connected between the resistance 4 and potentiometer 5 of comparison circuit; Output at signal comparator is connected with alarm 12.
The operation principle of this device is: referring to Fig. 1, copper liquid 10 is arranged in the smelting furnace, smelting furnace ground connection (mark 9) connects on the resistance 4+60v voltage, and DC low-voltage is applied between the power line and the earth (induction furnace ground connection 9) of induction coil 8 during use.Under the intact situation of furnace lining 11; The resistance of furnace lining 11 is very big, and electric current is very little, and the voltage drop on the resistance 4 is also very little; The voltage that is added on signal comparator 6 positive terminals that takes out from potentiometer 5 is above 6 volts; At this moment, signal comparator 6 output positive voltages, the tripping relay (not shown) of being failure to actuate.If furnace lining 11 is thinned to certain limit; The molten metal seepage perhaps takes place in the furnace lining 11; At this moment, furnace lining 11 resistance sharply reduce, and will form path from resistance 4, ammeter 3, potentiometer 2, reactor 1, induction coil 8, furnace lining 11 to the furnace lining earth point.At this moment, the reading of ammeter 3 is very big, and the pressure drop on the resistance 4 increases.Furnace lining 11 is thin more, the molten metal seepage is serious more, and the pressure drop on the resistance 4 is big more, and the voltage that is added on signal comparator 6 positive terminals that takes out from potentiometer 5 is just more little.When the voltage that is added on signal comparator 6 positive terminals that takes out from potentiometer 5 is lower than 6 volts, at this moment, signal comparator 6 output negative voltages, tripping relay moves and also sends alarm signal.
Claims (1)
1. the anti-runout warning device of medium-frequency induction furnace is characterized in that said warning device comprises detection circuit, comparison circuit and alarm; Said detection circuit comprises reactor, potentiometer and the ammeter of series connection; Said comparison circuit comprises the resistance and the potentiometer of series connection, and is connected to the positive terminal of signal comparator at the convertible tip of the potentiometer of said comparison circuit, and said detection circuit is connected between the resistance and potentiometer of said comparison circuit; Output at said signal comparator is connected with alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201092223U CN202485415U (en) | 2012-03-22 | 2012-03-22 | Runout-preventive alarm device of medium-frequency induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201092223U CN202485415U (en) | 2012-03-22 | 2012-03-22 | Runout-preventive alarm device of medium-frequency induction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202485415U true CN202485415U (en) | 2012-10-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201092223U Expired - Fee Related CN202485415U (en) | 2012-03-22 | 2012-03-22 | Runout-preventive alarm device of medium-frequency induction furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202485415U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034157A (en) * | 2014-07-02 | 2014-09-10 | 徐心亿 | Runout alarm circuit of crucible electric induction furnace |
| CN104567377A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Automatic-opening universal electric furnace switch with counting and face recognition function |
| CN104567385A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Information-based universal electric stove with counting and fingerprint recognition functions |
| CN104567400A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Universal electric furnace with alarming and face recognition functions |
| CN104567375A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Universal informatization electric furnace with alarming and face recognition function |
| CN104567380A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Flip type universal electric stove switch with human face recognition function |
| CN104567384A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Informationized universal electric stove |
| CN104567396A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Information-based universal electric stove with counting and human face recognition functions |
| CN104596270A (en) * | 2014-12-25 | 2015-05-06 | 贵州永兴科技有限公司 | Informationized universal electric furnace having alarming and fingerprint recognition functions |
| CN104596278A (en) * | 2014-12-25 | 2015-05-06 | 贵州永兴科技有限公司 | Translational start-typed all-purpose electric stove switch with functions of count and fingerprint recognition |
| CN104596254A (en) * | 2014-12-25 | 2015-05-06 | 贵州永兴科技有限公司 | Horizontal-movement opening type wire coil heater switch with fingerprint recognition function |
| CN110243182A (en) * | 2019-07-10 | 2019-09-17 | 无锡应达工业有限公司 | A kind of intermediate frequency furnace leak detection protection system |
-
2012
- 2012-03-22 CN CN2012201092223U patent/CN202485415U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034157A (en) * | 2014-07-02 | 2014-09-10 | 徐心亿 | Runout alarm circuit of crucible electric induction furnace |
| CN104567377A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Automatic-opening universal electric furnace switch with counting and face recognition function |
| CN104567385A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Information-based universal electric stove with counting and fingerprint recognition functions |
| CN104567400A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Universal electric furnace with alarming and face recognition functions |
| CN104567375A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Universal informatization electric furnace with alarming and face recognition function |
| CN104567380A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Flip type universal electric stove switch with human face recognition function |
| CN104567384A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Informationized universal electric stove |
| CN104567396A (en) * | 2014-12-25 | 2015-04-29 | 贵州永兴科技有限公司 | Information-based universal electric stove with counting and human face recognition functions |
| CN104596270A (en) * | 2014-12-25 | 2015-05-06 | 贵州永兴科技有限公司 | Informationized universal electric furnace having alarming and fingerprint recognition functions |
| CN104596278A (en) * | 2014-12-25 | 2015-05-06 | 贵州永兴科技有限公司 | Translational start-typed all-purpose electric stove switch with functions of count and fingerprint recognition |
| CN104596254A (en) * | 2014-12-25 | 2015-05-06 | 贵州永兴科技有限公司 | Horizontal-movement opening type wire coil heater switch with fingerprint recognition function |
| CN104567385B (en) * | 2014-12-25 | 2016-08-31 | 贵州永兴科技有限公司 | A kind of information-based universal electric furnace with counting and fingerprint identification function |
| CN104567396B (en) * | 2014-12-25 | 2016-09-28 | 贵州永兴科技有限公司 | A kind of information-based universal electric furnace with counting and face identification functions |
| CN110243182A (en) * | 2019-07-10 | 2019-09-17 | 无锡应达工业有限公司 | A kind of intermediate frequency furnace leak detection protection system |
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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: 20121010 Termination date: 20150322 |
|
| EXPY | Termination of patent right or utility model |