CN2828740Y - Device for measuring thickness of lining of metallurgical furnace - Google Patents
Device for measuring thickness of lining of metallurgical furnace Download PDFInfo
- Publication number
- CN2828740Y CN2828740Y CN 200520076037 CN200520076037U CN2828740Y CN 2828740 Y CN2828740 Y CN 2828740Y CN 200520076037 CN200520076037 CN 200520076037 CN 200520076037 U CN200520076037 U CN 200520076037U CN 2828740 Y CN2828740 Y CN 2828740Y
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- CN
- China
- Prior art keywords
- voltage
- furnace
- furnace lining
- lining
- resistor
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- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to a device for measuring thickness of a lining of a metallurgical furnace, which is characterized in that one end of a rectification bridge 1 which outputs low-voltage direct current voltage is directly connected with an induction coil 4 through a choking inductor L, and the other end is connected with a bottom electrode 5 through a resistor R2. The danger and the phenomenon of furnace leakage on the furnace lining can be judged by utilizing the magnitude of the current of the furnace lining. When the furnace lining is normal, the current passing through the resistor R2 is mall and the component voltage on the resistor R2 is also small. At this time, a comparator N outputs negative voltage and an alarm circuit can not be actuated. When a low-resistance phenomenon, such as thinned furnace lining, occurs on the furnace lining. The low resistance of the furnace lining can be caused by the leakage of molten metal. At this time, the voltage drop on the resistor R2 is increased. When the voltage drop exceeds the setting voltage of the comparator N, the voltage drop is arranged by a potentiometer RP2, the comparator N outputs positive voltage and the alarm circuit actuates to send out a warning signal. The device which is used for a crucible type metallurgical induction heating furnace has the advantages that electrodes are not required to be laid in the furnace lining, the furnace building efficiency is raised and the reliability and the safety of work are increased.
Description
Technical field
The utility model relates to a kind of lining thickness pick-up unit that is used for the crucible type metallurgical smelting furnace, belong to metallurgical smelting furnace alarm technique field.
Background technology
The runout warning device of Cai Yonging in the past, general need lay the electrode of stainless steel cloth as test voltage in furnace lining when tamped lining, and brickwork work is cumbersome.And be subject to disturb, misoperation takes place.
Summary of the invention
The purpose of this utility model is to overcome the defective that prior art exists, and proposes a kind of lining thickness pick-up unit.It can not be used in and lay stainless steel cloth in the furnace lining, improves the brickwork work efficiency.Technical solution of the present utility model: an end that it is characterized in that exporting the rectifier bridge of low-voltage dc voltage directly is connected with inductive coil by choke induction L, and the other end then links to each other with hearth electrode by resistance R 2.The electric current that causes according to the furnace lining changes in resistance changes the actual operating position of judging furnace lining.Advantage of the present utility model: saved the stainless steel wire of in furnace lining, laying.And, the suffered interference of device is reduced greatly owing to need not lay stainless steel wire, and be difficult for misoperation takes place, increased reliability, the security of device.
Description of drawings
Accompanying drawing is the example structure synoptic diagram of Metallurgical Furnace Lining Thickness Checkout Gear.
Among the figure 1 is rectifier bridge, the 2nd, cable, the 3rd, and the metallurgical induction heater, the 4th of crucible type, inductive coil, the 5th, hearth electrode, A are that phase inverter, L are that choke induction, R1, R2 are that resistance, RP2 are that potentiometer, N are comparer (model can be used LM324).
Embodiment
Contrast accompanying drawing, its structure are that the output terminal of the rectifier bridge 1 of output low-voltage dc voltage directly is connected with inductive coil 4 by choke induction L, and another output terminal of rectifier bridge 1 then links to each other with hearth electrode 5 by resistance R 2.
During work, external power supply, is added between inductive coil 4 and the hearth electrode 5 by rectifier bridge output low-voltage dc voltage through the rectifier bridge rectification by the transformer step-down.Rectifier bridge output low-voltage dc voltage one end is direct and inductive coil 4 by choke induction L.The other end joins by resistance R 2 and hearth electrode 5.When furnace lining just often, very little by the electric current of resistance R 2, the dividing potential drop on the resistance R 2 is also very little, comparer N output negative voltage at this moment, warning circuit is failure to actuate.If furnace lining generation low resistance phenomenon such as furnace lining attenuation, the molten metal seepage all can cause the furnace lining low resistance, and it is big that the pressure drop on the resistance R 2 at this moment becomes, when surpassing the setting voltage of comparer N, RP2 is given by potentiometer, and comparer N exports positive voltage, alerting signal is sent in the warning circuit action.This device is used for the metallurgical induction heater of crucible type.
Claims (1)
1, Metallurgical Furnace Lining Thickness Checkout Gear, the output terminal that it is characterized in that exporting the rectifier bridge (1) of low-voltage dc voltage directly is connected with inductive coil (4) by choke induction L, and another output terminal of rectifier bridge (1) then links to each other with hearth electrode (5) by resistance (R2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520076037 CN2828740Y (en) | 2005-10-07 | 2005-10-07 | Device for measuring thickness of lining of metallurgical furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520076037 CN2828740Y (en) | 2005-10-07 | 2005-10-07 | Device for measuring thickness of lining of metallurgical furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2828740Y true CN2828740Y (en) | 2006-10-18 |
Family
ID=37080296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520076037 Expired - Lifetime CN2828740Y (en) | 2005-10-07 | 2005-10-07 | Device for measuring thickness of lining of metallurgical furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2828740Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783511A (en) * | 2016-04-27 | 2016-07-20 | 佛山市高捷工业炉有限公司 | Device and method for checking damage and leakage of smelting furnace in non-contact induction manner |
| CN110230975A (en) * | 2019-06-20 | 2019-09-13 | 武汉钢铁有限公司 | A kind of steel slag thickness measuring device |
| CN111004882A (en) * | 2019-12-18 | 2020-04-14 | 上海大学 | Method and device for measuring thickness of furnace wall of hearth of blast furnace on line |
| CN116124389A (en) * | 2023-04-19 | 2023-05-16 | 合智熔炼装备（上海）有限公司 | Crucible leakage detection pre-judging device and detection method thereof |
-
2005
- 2005-10-07 CN CN 200520076037 patent/CN2828740Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105783511A (en) * | 2016-04-27 | 2016-07-20 | 佛山市高捷工业炉有限公司 | Device and method for checking damage and leakage of smelting furnace in non-contact induction manner |
| CN110230975A (en) * | 2019-06-20 | 2019-09-13 | 武汉钢铁有限公司 | A kind of steel slag thickness measuring device |
| CN110230975B (en) * | 2019-06-20 | 2021-01-12 | 武汉钢铁有限公司 | Steel slag layer thickness measuring device |
| CN111004882A (en) * | 2019-12-18 | 2020-04-14 | 上海大学 | Method and device for measuring thickness of furnace wall of hearth of blast furnace on line |
| CN116124389A (en) * | 2023-04-19 | 2023-05-16 | 合智熔炼装备（上海）有限公司 | Crucible leakage detection pre-judging device and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Suzhou Zhenwu Electric Furnace Co., Ltd. Assignor: Zhu Xingfa|Han Zhicheng Contract fulfillment period: 2008.8.18 to 2013.8.18 Contract record no.: 2008320001054 Denomination of utility model: Device for measuring metallurgical furnace lining thickness Granted publication date: 20061018 License type: Exclusive license Record date: 20081024 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.18 TO 2013.8.18; CHANGE OF CONTRACT Name of requester: SUZHOU ZHENWU ELECTRIC STOVE CO., LTD. Effective date: 20081024 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20061018 |
|
| EXPY | Termination of patent right or utility model |