CN201945173U - Asbestos pad for turn-to-turn insulation of induction coil - Google Patents
Asbestos pad for turn-to-turn insulation of induction coil Download PDFInfo
- Publication number
- CN201945173U CN201945173U CN201020631295XU CN201020631295U CN201945173U CN 201945173 U CN201945173 U CN 201945173U CN 201020631295X U CN201020631295X U CN 201020631295XU CN 201020631295 U CN201020631295 U CN 201020631295U CN 201945173 U CN201945173 U CN 201945173U
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- turn
- induction coil
- asbestos pad
- insulation
- furnace
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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 - Fee Related
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Abstract
The utility model discloses an asbestos pad for the induction coil turn-to-turn insulation of a metallurgical coreless intermediate frequency induction furnace, which is characterized in that the asbestos pad is formed with a protrusion along the direction parallel with the induction coil from the outside of the induction coil so as to increase the insulation distance between adjacent turns. By the arrangement of the protrusion of the insulation asbestos pad at the outside of the induction coil, the insulation distance between adjacent turns is increased. Therefore, the leaked iron liquid can only drop down along the projecting part, so that the short circuit due to the communication between the induction coil and the ground and the turn-to-turn communication caused by the iron liquid leakage of the furnace lining is avoided. Meanwhile, the protrusion of the asbestos pad is low in cost, so that the asbestos pad of the utility model is economical and effective.
Description
Technical field
The utility model relates to a kind of induction coil turn-to-turn insulation asbestos pad, is particularly useful for the induction furnace that field of metallurgy is used.
Background technology
Coreless induction furnace, be in the refractory crucible outside, around a coil that is called inductor, it is equivalent to an air core transformer in fact, and inductor is equivalent to the primary winding of transformer, and metal charge is equivalent to 2 coils of short circuit, electric current produces alternating magnetic field by inductor, induced emf in metal charge has produced powerful electric current because of its short circuit connects in furnace charge, make furnace charge heating and fusing.According to the power frequency difference of using, coreless induction furnace can be divided into main frequency furnace (50Hz), intermediate frequency furnace (50-1000Hz) and coreless induction furnace (＞1000Hz).Wherein, intermediate frequency furnace is reduced to minimum degree and is made advantages such as contribution for working environment reaches the green engineering condition as far as possible because of the influence factor that can produce top quality foundry goods, provide flexible castings production system, foundry goods energy consumption to reduce to bottom line, device height automation control people, is used on a large scale in field of metallurgy.
And induction coil turn-to-turn short circuit often takes place is one of most common failure that is run into during medium-frequency induction furnace uses.And the main cause that produces turn-to-turn short circuit mainly contains following 2 points: 1. owing to furnace lining seepage iron liquid, iron liquid cooling but back induction coil is communicated with ground and the turn-to-turn connection, causes short circuit; 2. the asbestos pad that intercoil insulation is used when tiing a knot crucible is often ejected by crucible wall and makes the coil sections turn-to-turn not have asbestos pad, thereby causes short circuit.
The method that prevents turn-to-turn short circuit now commonly used for example adopts method costs such as parcel such as mica sheet very high, is a very big spending for mini steel plant.Therefore, has very big Practical significance if can develop a kind of cost-effective method that can solve turn-to-turn short circuit.
Summary of the invention
The utility model aims to provide a kind of induction coil turn-to-turn insulation asbestos pad that can as far as possible avoid the metallurgy of turn-to-turn short circuit with the centreless medium-frequency induction furnace.The technical scheme that the utility model adopted is as follows: a kind of metallurgical induction coil turn-to-turn insulation asbestos pad with the centreless medium-frequency induction furnace, it is characterized in that described asbestos pad forms protrusion from the induction coil outside along the direction that is parallel to induction coil, to increase the insulation distance between adjacent turn.
The beneficial effects of the utility model are: by the protrusion of insulation asbestos pad in the formation of the induction coil outside, increased the insulation distance between adjacent turn, make seepage iron liquid to drip downwards along projection, avoided because the induction coil that furnace lining seepage iron liquid causes is communicated with ground and turn-to-turn is communicated with the short circuit that causes, the cost that forms the asbestos pad protrusion simultaneously is very low, is that a kind of both economy has highly effective method.
Description of drawings
Fig. 1 has the structural representation of the induction coil turn-to-turn insulation of projection with asbestos pad.
1. crucible wall; 2. asbestos pad; 3. induction coil; 4. protrude; 5. seepage iron liquid.
The specific embodiment
As shown in Figure 1, metallurgy in the utility model induction coil turn-to-turn insulation asbestos pad of centreless medium-frequency induction furnace, it is characterized in that described asbestos pad forms protrusion from the induction coil outside along the direction that is parallel to induction coil, to increase the insulation distance between adjacent turn.
Claims (1)
1. a metallurgical induction coil turn-to-turn insulation asbestos pad with the centreless medium-frequency induction furnace is characterized in that described asbestos pad protrudes from the induction coil outside along the direction formation that is parallel to induction coil, to increase the insulation distance between adjacent turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020631295XU CN201945173U (en) | 2010-11-25 | 2010-11-25 | Asbestos pad for turn-to-turn insulation of induction coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020631295XU CN201945173U (en) | 2010-11-25 | 2010-11-25 | Asbestos pad for turn-to-turn insulation of induction coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945173U true CN201945173U (en) | 2011-08-24 |
Family
ID=44472513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020631295XU Expired - Fee Related CN201945173U (en) | 2010-11-25 | 2010-11-25 | Asbestos pad for turn-to-turn insulation of induction coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201945173U (en) |
-
2010
- 2010-11-25 CN CN201020631295XU patent/CN201945173U/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: 20110824 Termination date: 20111125 |