CN202333736U - Short-circuit protection device of inductor of medium frequency electric furnace - Google Patents
Short-circuit protection device of inductor of medium frequency electric furnace Download PDFInfo
- Publication number
- CN202333736U CN202333736U CN2011204342141U CN201120434214U CN202333736U CN 202333736 U CN202333736 U CN 202333736U CN 2011204342141 U CN2011204342141 U CN 2011204342141U CN 201120434214 U CN201120434214 U CN 201120434214U CN 202333736 U CN202333736 U CN 202333736U
- Authority
- CN
- China
- Prior art keywords
- short
- induction coil
- copper sheet
- circuit protection
- protection device
- 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.)
- Expired - Fee Related
Links
- 230000006698 induction Effects 0.000 claims abstract description 41
- 229910052802 copper Inorganic materials 0.000 claims abstract description 19
- 239000010949 copper Substances 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010425 asbestos Substances 0.000 claims abstract description 12
- 239000004744 fabric Substances 0.000 claims abstract description 12
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 12
- 230000015556 catabolic process Effects 0.000 description 3
- 150000001879 copper Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
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- General Induction Heating (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The utility model provides a short-circuit protection device of an inductor of a medium frequency electric furnace. The short-circuit protection device comprises induction coils, wherein asbestos cloth is wound outside the induction coils. The short-circuit protection device is characterized in that a copper sheet is arranged between the adjacent induction coils and is arranged at the outer side of the asbestos cloth; and the width of the copper sheet is the same as that of the induction coils. The copper sheet is arranged between the induction coils. When the induction sheet falls down, the fallen induction coil causes a short circuit while touching the copper sheet. The medium frequency electric furnace is controlled to be switched off by a short circuit alarming system, so as to effectively prevent the induction coils from being punctured and burnt.
Description
Technical field
The utility model relates to a kind of short-circuit protection of middle frequency furnace inductor, especially relates to a kind of short-circuit protection of controllable silicon middle frequency furnace inductor.
Background technology
Middle frequency furnace is a kind of supply unit that power frequency 50HZ alternating current is changed into intermediate frequency (300HZ is above to 10000HZ); The three-phase main-frequency alternating current, become direct current after the rectification, become adjustable electric current of intermediate frequency to direct current again; Supply is by the intermediate frequency alternating current that flows through in electric capacity and the induction coil; In induction coil, produce the highdensity magnetic line of force, and the metal material that holds in the cutting induction coil, very big eddy current in metal material, produced.This eddy current has some character of electric current of intermediate frequency equally, and promptly the free electron of metal self will produce heat having in the metallic object of resistance to flow.The body of heater of middle frequency furnace comprises the inductor that is formed by the induction coil spiral surrounding, and induction coil twines asbestos cloth outward, makes between each circle induction coil insulated from each otherly, prevents the induction coil contact short circuit.But when the induction coil of intermediate frequency electric furnace uses for a long time, induction coil can occur and drop, and the compressing asbestos cloth, cause short circuit, cause that induction coil is breakdown to be burnt, have a strong impact on the work of middle frequency furnace.
Summary of the invention
The utility model provides a kind of induction coil that prevents that effectively the inductor short circuit from causing to burn to the deficiency of middle frequency furnace inductor short-circuit protection of the prior art.
For solving the problems of the technologies described above, the utility model is able to solve through following technical proposals:
A kind of short-circuit protection of middle frequency furnace inductor comprises induction coil, and induction coil is wound with asbestos cloth outward; It is characterized in that; Be provided with copper sheet between the said adjacent induction coil, said copper sheet is arranged on the asbestos cloth outside, and its width is identical with width of induction coil.
In the technique scheme, said copper sheet thickness is no more than 2mm.
The beneficial effect of the utility model is: compared with prior art; Copper sheet is set between induction coil, under induction coil, falls behind, the induction coil of whereabouts causes short circuit after touching copper sheet at once; By the control middle frequency furnace outage of short-circuit alarming system, prevent that effectively induction coil is breakdown, burn.
Description of drawings
Fig. 1 is the structural representation of inductor.
Fig. 2 is an A-place profile among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
Referring to Fig. 1, the middle frequency furnace inductor comprises the induction coil 10 of shape in the shape of a spiral, and induction coil 10 peripheries are wound with asbestos cloth 20, and the thickness of general asbestos cloth 20 is no more than 3mm, all leaves the space between promptly every circle induction coil 10, and isolates through asbestos cloth 20.
Referring to Fig. 2, between adjacent induction coil 10, set up copper sheet 30, this copper sheet 30 is arranged on asbestos cloth 20 outsides, in the middle of the space of promptly every circle induction coil copper sheet 30 is set, and the width of this copper sheet 30 is identical with induction coil 10 width.
As preferably, the thickness of copper sheet 30 is no more than 2mm, to save raw material.
Claims (2)
1. the short-circuit protection of a middle frequency furnace inductor; Comprise induction coil (10); Induction coil (10) is outer to be wound with asbestos cloth (20), it is characterized in that, is provided with copper sheet (30) between the said adjacent induction coil (10); Said copper sheet (30) is arranged on asbestos cloth (20) outside, and its width is identical with induction coil (10) width.
2. the short-circuit protection of a kind of middle frequency furnace inductor according to claim 1 is characterized in that, said copper sheet (30) thickness is no more than 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204342141U CN202333736U (en) | 2011-10-31 | 2011-10-31 | Short-circuit protection device of inductor of medium frequency electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204342141U CN202333736U (en) | 2011-10-31 | 2011-10-31 | Short-circuit protection device of inductor of medium frequency electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202333736U true CN202333736U (en) | 2012-07-11 |
Family
ID=46445702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204342141U Expired - Fee Related CN202333736U (en) | 2011-10-31 | 2011-10-31 | Short-circuit protection device of inductor of medium frequency electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202333736U (en) |
-
2011
- 2011-10-31 CN CN2011204342141U patent/CN202333736U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121031 |