CN2660662Y - Anti-radiation type 3-phase high voltage rectifying transformer - Google Patents
Anti-radiation type 3-phase high voltage rectifying transformer Download PDFInfo
- Publication number
- CN2660662Y CN2660662Y CN 200320111060 CN200320111060U CN2660662Y CN 2660662 Y CN2660662 Y CN 2660662Y CN 200320111060 CN200320111060 CN 200320111060 CN 200320111060 U CN200320111060 U CN 200320111060U CN 2660662 Y CN2660662 Y CN 2660662Y
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- winding
- screen
- phase high
- iron core
- frequency
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Abstract
The utility model relates to a radiation-protection 3-phase high-voltage rectiformer, comprising an ion core, a first winding and a second winding. A shielding layer is arranged on the first winding and the second winding respectively, and an insulating layer is arranged between the first winding and shielding layer of the first winding and between the second winding and shielding layer of the second winding respectively; the shielding layers of the first winding and the second winding and as well as the ion core are grounded. The utility model is capable to keep the high-frequency signals from running back to the input grid; minimize the contamination to the high-frequency component of the grid; and keep the operation of the broadcast and TV equipment and as well as communication equipment on the same circuit from influence.
Description
Technical field
The utility model relates to a kind of radiation proof type three-phase high-voltage rectifier transformer, is applicable to the high-frequency dielectric firing equipment.
Background technology
At present, the high-frequency dielectric firing equipment mainly contains two parts and forms, and a part is the radio-frequency generator of medium heating usefulness, and another part is the hydraulic press of hot-forming usefulness.Radio-frequency generator is the core apparatus of high-frequency dielectric firing equipment, its energy input is the 380V50Hz three-phase alternating-current supply, after boosting by the three-phase voltage increasing transformer, carries out rectification, finish the power source conversion of AC/DC, in order to the high voltage direct current power supply of vacuum tube oscillator to be provided.Radio-frequency generator comes down to the high-power high-frequency oscillator of a 6-28MHz.Because the frequency height, power is big, thereby radiation is very severe.Although radio-frequency generator manufacturer has taked the measure of subregion shielding, filtering and impedance matching, the high-frequency signal that electric network source is caused pollutes still quite serious.Its main cause is because due to the coupling capacitance that exists between first and second winding of transformer.When secondary winding was coupled or senses high-frequency signal, the high-frequency signal on the secondary winding can pass to winding one time by coupling capacitance, formed the pollution channel to electric network source.When in a single day the high-frequency dielectric firing equipment puts into operation, its harm has two: one, causes the equipment such as radio and television on the same electrical network can't operate as normal; The 2nd, high-frequency signal to farther space radiation, seriously disturbs the operate as normal of radio facility by power network line, and jeopardizes health of human body.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of radiation proof type three-phase high-voltage rectifier transformer.
The technical scheme that its technical problem that solves the utility model adopts:
The utility model includes iron core, a winding, secondary winding is characterized in that being respectively equipped with screen on first and second winding, described screen is complete screen, be about to winding inboard, the outside, top, bottom, all be closed.And between first and second winding and its screen, be respectively equipped with insulating barrier; The equal ground connection of the screen of first and second winding and iron core.
The material of described screen is Copper Foil or aluminium foil.
Earthing mode has two kinds: the one, and the screen of an iron core and the winding shell ground of meeting sb. at the airport, the screen of secondary winding connects power supply ground.Two is the screen of first and second winding and the iron core shell ground of all meeting sb. at the airport.
The beneficial effects of the utility model are that it can be blocked high-frequency signal and scurries to returning of input electrical network, make the spoke degree of the contaminated radio-frequency component of electrical network be reduced to bottom line, and the radio and television equipment on the same circuit and the work of communication equipment are immune.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the structural representation of the utility model embodiment 2.
Fig. 3 is the equivalent circuit diagram of embodiment 1.
Fig. 4 is the equivalent circuit diagram of embodiment 2.
In Fig. 1,2,1 iron core, 2 winding N
1, 3 secondary winding N
2, 4 first and second winding screens, 5 first and second winding insulation layers, 6 power supply ground, 7 casing ground, C
1, C
2Be the electric capacity that first and second winding forms screen (or ground) respectively, C
12Be the commissure electric capacity between first and second winding.
Embodiment
By embodiment shown in Figure 11 as can be known, include 1, winding 2 of iron core, secondary winding 3, be respectively equipped with screen 4 on first and second winding, described screen 4 is complete screen, be about to winding inboard, the outside, top, bottom, all be closed.And between first and second winding and its screen 4, be respectively equipped with insulating barrier 5; The screen 4 of an iron core 1 and a winding 2 shell ground 7 of meeting sb. at the airport, the screen 4 of secondary winding 3 connects power supply ground 6.In the present embodiment, the material of the screen 4 of first and second winding is Copper Foil or aluminium foil.
The operation principle of embodiment 1 following (referring to Fig. 3):
When secondary winding is loaded with the radio-frequency component of certain amplitude, at first by secondary coil N
2The first order filter capacitor C2 that forms with power supply ground (or screen) filters radio-frequency component significantly, since the electrostatic screen effect, the commissure capacitor C between first and second winding
12Coupling influence be reduced to bottom line.For C
2Do not filter fully and by C
12Be coupled to winding N one time
1Remaining radio-frequency component, by a winding N
1Second level filter capacitor C to casing ground (or screen) formation
1Further filter, make winding N one time
1On high fdrequency component reduce to the degree of not having harm.
By embodiment shown in Figure 22 as can be known, its difference from Example 1 is the screen 4 of first and second winding and the iron core 1 shell ground 7 of all meeting sb. at the airport.Its operation principle is with embodiment 1 (referring to Fig. 4).
In the high-frequency dielectric firing equipment, use the utility model relatively to see the following form with using its performance of general transformer:
| Item compared | Adopt general transformer | Adopt the utility model |
| Field intensity of high frequency in the high-voltage rectifier power source shielding cavity | The cavity space high frequency radiation is very strong, fluorescent tube inserts shielded enclosure, can send high light. | The cavity space high frequency radiation is very faint, fluorescent tube inserts shielded enclosure, can be not luminous. |
| The measurability of primary power source parameter | As long as voltmeter, clamp on amperemeter are near the primary power source line, just be subjected to the high-frequency electric field effect, reading has just appearred in ammeter, and power parameter can't be tested. | Normally working voltage table, clamp on amperemeter testing power supply parameter, be not subjected to the high-frequency electric field effect, power parameter can be tested. |
| Listened to the visuality of the television set on the same electrical network | Television set is subjected to High-frequency Interference serious, picture and sound can't occur. | The TV function is watched, is listened to. |
Claims (4)
1, a kind of radiation proof type three-phase high-voltage rectifier transformer, it includes iron core (1), a winding (2), secondary winding (3), it is characterized in that on first and second winding, being respectively equipped with screen (4), and between first and second winding and its screen (4), be respectively equipped with insulating barrier (5); The equal ground connection of the screen of first and second winding and iron core.
2, radiation proof type three-phase high-voltage rectifier transformer according to claim 1, the material that it is characterized in that described screen is Copper Foil or aluminium foil.
3, radiation proof type three-phase high-voltage rectifier transformer according to claim 2, the screen that it is characterized in that an iron core and the winding shell ground (7) of meeting sb. at the airport, the screen of secondary winding connects power supply ground (6).
4, radiation proof type three-phase high-voltage rectifier transformer according to claim 2 is characterized in that the screen of first and second winding and the iron core shell ground (7) of all meeting sb. at the airport.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111060 CN2660662Y (en) | 2003-10-17 | 2003-10-17 | Anti-radiation type 3-phase high voltage rectifying transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111060 CN2660662Y (en) | 2003-10-17 | 2003-10-17 | Anti-radiation type 3-phase high voltage rectifying transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2660662Y true CN2660662Y (en) | 2004-12-01 |
Family
ID=34344051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320111060 Expired - Fee Related CN2660662Y (en) | 2003-10-17 | 2003-10-17 | Anti-radiation type 3-phase high voltage rectifying transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2660662Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101952910B (en) * | 2008-07-24 | 2012-11-28 | 能源技术有限公司 | Hybrid transformer with transformation and improved harmonics functions, unbalanced current, and a power supply system thereof |
| CN106406210A (en) * | 2016-08-24 | 2017-02-15 | 苏州哈度软件有限公司 | Electrolytic tank electrical equipment control system |
| CN111584219A (en) * | 2020-06-10 | 2020-08-25 | 青岛鼎信通讯股份有限公司 | Three-phase high-frequency transformer applied to power electronic transformer |
-
2003
- 2003-10-17 CN CN 200320111060 patent/CN2660662Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101952910B (en) * | 2008-07-24 | 2012-11-28 | 能源技术有限公司 | Hybrid transformer with transformation and improved harmonics functions, unbalanced current, and a power supply system thereof |
| CN106406210A (en) * | 2016-08-24 | 2017-02-15 | 苏州哈度软件有限公司 | Electrolytic tank electrical equipment control system |
| CN111584219A (en) * | 2020-06-10 | 2020-08-25 | 青岛鼎信通讯股份有限公司 | Three-phase high-frequency transformer applied to power electronic transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |