CN102045903A - Method for protecting induction heating coil by utilizing water flow relay - Google Patents
Method for protecting induction heating coil by utilizing water flow relay Download PDFInfo
- Publication number
- CN102045903A CN102045903A CN 201010616191 CN201010616191A CN102045903A CN 102045903 A CN102045903 A CN 102045903A CN 201010616191 CN201010616191 CN 201010616191 CN 201010616191 A CN201010616191 A CN 201010616191A CN 102045903 A CN102045903 A CN 102045903A
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- China
- Prior art keywords
- water flow
- flow relay
- induction coil
- delay time
- preset
- 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.)
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Abstract
The invention discloses a method for protecting an induction heating coil by utilizing a water flow relay. The method is characterized in that the water flow relay is arranged on the effluent pipeline of an induction coil; the upper limit and lower limit of water flow can be preset; the water flow relay instantly gives an acousto-optic alarm once the water flow exceeds the preset upper limit or the preset lower limit, and the water flow relay can automatically cut off a heating power supply after the preset delay time. By the method, cooling water with enough flow can be always ensured to flow out of the induction coil. The method has the following beneficial effects: if the condition that the cooling water supply is suddenly stopped or other abnormal conditions happen to the induction coil in the high temperature heating process, the system will give an alarm to give a prompt and automatically cut off the heating power supply after the preset delay time, thus reliably protecting the induction coil.
Description
Technical field
The present invention relates to the guard method of a kind of induction heating cooling water flow,, belong to the industrial furnace field, particularly electric induction furnace heating field.
Background technology
Conventional at present induction coil guard method is: into and out of water end (W.E.) hydraulic pressure sensor is installed at the induction coil cooling water, is protected induction coil with this.If cooling water pressure is lower than default lower limit, can cut off heating power supply immediately, the protection induction coil.But still have a weak point: when the turnover water route is stopped up, or when being in closed condition, hydraulic pressure sensor still has hydraulic pressure to show, do not transfinite, and can not cut off heating power supply, thereby might burn induction coil, causes serious accident.
The present invention proposes in the induction coil water side water flow relay to be installed, and protects induction coil with this.
Summary of the invention
The invention provides a kind of induction coil guard method; overcome the existing technical problem that the hydraulic pressure sensor method exists of installing; its technical scheme is: on the induction coil outlet pipeline water flow relay is installed; preestablish the upper limit (0.1～100 cubic meters per second) and the lower limit (0.00001～10 cubic meters per second) of discharge; in case discharge exceeds after the predefined upper limit or the lower limit; can be immediately with the sound (50～120 decibels) of big decibel; the light of flicker is reported to the police; and afterwards at predefined delay time (from 0 second to 10 minutes); can cut off heating power supply automatically, reach the purpose of protection induction coil.
Exceed upper limit alarm, cut off heating power supply, be excessive for fear of cooling water flow, break through cooling water pipe or wash joint open, cause the accident of metalling run out; Exceed lower limit and report to the police, cut off heating power supply, be too small for fear of cooling water flow, not enough to the induction coil cooling, make that the induction coil temperature that is heating is too high, cooling water is overheated even boiling, cause cooling water pipe to soften, collapse out, even burn out induction coil.
Preestablish time-delay, thereby be to fluctuate once in a while for fear of cooling water flow to cause the misoperation of transfiniting to cut off heating power supply.This delay time can rule of thumb be set by operating personnel oneself, from 0 second to 10 minutes.If within delay time, discharge is got back in the limit, and then water flow relay is failure to actuate, and can not cut off heating power supply.
Beneficial effect
Adopt the device of this method; induction coil is in high-temperature heating process, and as the unexpected stop supplies of cooling water or other abnormal conditions (for example: stop up, discharge fluctuates for a long time etc.), system can carry out alarm; and the automatic cut-out of time-delay heating power supply, thereby protect induction coil reliably.
Adopt the load coil of this method protection, can guarantee all the time that the cooling water of enough flows flows out from induction coil, thereby induction coil can use relievedly.
Embodiment
Embodiment 1:
On the induction coil outlet pipeline, water flow relay is installed; preestablish discharge on be limited to 100 cubic meters per seconds, be limited to 10 cubic meters per seconds down; in case discharge exceeds after the predefined upper limit or the lower limit; can report to the police with 120 decibels sound, the light of flicker immediately; and (that is: do not delay time after 0 second at predefined delay time; the just action immediately as long as transfinite), cut off heating power supply automatically, thereby the protection induction coil is not burnt out.
Embodiment 2:
On the induction coil outlet pipeline, water flow relay is installed; preestablish discharge on be limited to 0.1 cubic meters per second, be limited to 0.00001 cubic meters per second down; in case discharge exceeds after the predefined upper limit or the lower limit; can report to the police with 50 decibels sound, the light of flicker immediately; and after predefined delay time 10 minutes; automatically cut off heating power supply, thereby the protection induction coil is not burnt out.
Embodiment 3:
On the induction coil outlet pipeline, water flow relay is installed; preestablish discharge on be limited to 1 cubic meters per second, be limited to 0.3 cubic meters per second down; in case discharge exceeds after the predefined upper limit or the lower limit; can report to the police with 80 decibels sound, the light of flicker immediately; and at predefined delay time after 5 seconds; automatically cut off heating power supply, thereby the protection induction coil is not burnt out.
Claims (5)
1. method with water flow relay protection load coil; it is characterized in that: on the outlet pipeline of induction coil, water flow relay is housed; can preestablish the upper and lower bound of discharge; when discharge exceeds the predefined upper limit or in limited time following; promptly produce sound and light alarm; and after predefined delay time, cut off heating power supply automatically.
2. the method with water flow relay protection load coil according to claim 1, it is characterized in that: the upper limit setting range of discharge is 0.1～100 cubic meters per second.
3. the method with water flow relay protection load coil according to claim 1, it is characterized in that: the lower limit set scope of discharge is 0.00001～10 cubic meters per second.
4. the method with water flow relay protection load coil according to claim 1, it is characterized in that: the decibel value of alarm sound is between 50～120.
5. the method with water flow relay protection load coil according to claim 1, it is characterized in that: predefined delay time is between 0 second to 10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010616191 CN102045903A (en) | 2010-12-31 | 2010-12-31 | Method for protecting induction heating coil by utilizing water flow relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010616191 CN102045903A (en) | 2010-12-31 | 2010-12-31 | Method for protecting induction heating coil by utilizing water flow relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102045903A true CN102045903A (en) | 2011-05-04 |
Family
ID=43911510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010616191 Pending CN102045903A (en) | 2010-12-31 | 2010-12-31 | Method for protecting induction heating coil by utilizing water flow relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102045903A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520278A (en) * | 2011-12-07 | 2012-06-27 | 中国电力科学研究院 | Device used for thermal stability and temperature rise test of transformer sleeve |
| CN108132623A (en) * | 2017-12-13 | 2018-06-08 | 佛山市顺德区美的洗涤电器制造有限公司 | For the method for heating and controlling and device of dish-washing machine |
| EP3672007A1 (en) * | 2018-12-17 | 2020-06-24 | Siemens Aktiengesellschaft | Determination of the flow speed in a coolant circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1822726C (en) * | 1990-11-29 | 1993-06-23 | Самаркандский Кооперативный Институт Центросоюза Им.В.В.Куйбышева | Foodstuffs drying installation |
| CN2361032Y (en) * | 1998-04-28 | 2000-01-26 | 南海市黄岐良奇钢瓶总厂 | Water flow electric relay |
| CN1425516A (en) * | 2002-07-02 | 2003-06-25 | 吉林大学 | Electromagnetic induction rivet heater |
-
2010
- 2010-12-31 CN CN 201010616191 patent/CN102045903A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1822726C (en) * | 1990-11-29 | 1993-06-23 | Самаркандский Кооперативный Институт Центросоюза Им.В.В.Куйбышева | Foodstuffs drying installation |
| CN2361032Y (en) * | 1998-04-28 | 2000-01-26 | 南海市黄岐良奇钢瓶总厂 | Water flow electric relay |
| CN1425516A (en) * | 2002-07-02 | 2003-06-25 | 吉林大学 | Electromagnetic induction rivet heater |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520278A (en) * | 2011-12-07 | 2012-06-27 | 中国电力科学研究院 | Device used for thermal stability and temperature rise test of transformer sleeve |
| CN102520278B (en) * | 2011-12-07 | 2014-07-23 | 中国电力科学研究院 | Device used for thermal stability and temperature rise test of transformer sleeve |
| CN108132623A (en) * | 2017-12-13 | 2018-06-08 | 佛山市顺德区美的洗涤电器制造有限公司 | For the method for heating and controlling and device of dish-washing machine |
| EP3672007A1 (en) * | 2018-12-17 | 2020-06-24 | Siemens Aktiengesellschaft | Determination of the flow speed in a coolant circuit |
| WO2020126330A1 (en) | 2018-12-17 | 2020-06-25 | Siemens Aktiengesellschaft | Determining the flow velocity in a coolant circuit |
| US11910579B2 (en) | 2018-12-17 | 2024-02-20 | Siemens Aktiengesellschaft | Determining the flow velocity in a coolant circuit |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110504 |