The invention discloses a loaded voltage-regulating electric transformer, wherein each phase winding of the loaded voltage-regulating electric transformer is sequentially composed of a low-voltage winding, a high-voltage winding, a coarse regulating voltage-regulating winding and a multi-level fine regulating voltage-regulating winding from inside to outside; the low-voltage winding is led out axially; the high-voltage winding and the coarse regulating voltage-regulating winding are led out from two ends radially; a leading-out wire at one end of the high-voltage winding is respectively connected to outgoing lines A, B and C of a three-phase transformer; one end of the coarse regulating voltage-regulating winding is connected to the positive electrode end of a loaded tap switch; after the high-voltage winding is connected with the other end of the coarse regulating voltage-regulating winding, the high-voltage winding is connected to the negative electrode end of the loaded tap switch; and two ends of the multi-level fine regulating voltage-regulating winding and a contact of each coil are respectively connected to each tap contact of the loaded tap switch through a lead According to the invention, at each position of the maximal tap, the rated tap and the minimum tap of the transformer, the load losses are basically equivalent, and the amount of external heat radiators of the transformer is reduced, thus not only is the cost of the transformer lowered, but also the power transformation efficiency of the transformer is improved

Loaded voltage-regulating electric transformer

The invention discloses a single-phase transformer. The single-phase transformer comprises an iron core main column, a first iron core side column and a second iron core side column, wherein a low-voltage coil, a medium-voltage coil and a high-voltage coil are sleeved on the iron core main column from the inside to the outside in turn; an excitation coil and a voltage regulation coil are sleeved on the first iron core side column from the inside to the outside in turn; and the excitation coil is connected with the medium-voltage coil sleeved on the iron core main column in parallel in order to regulate the voltage of the voltage regulation coil. By sleeving the voltage regulation coil on the first iron core side column, the coil is convenient to wind, manufacturing risks are reduced, the operation reliability of the transformer is improved, and the overall width of the transformer is effectively reduced.

Single-phase transformer

PROBLEM TO BE SOLVED: To efficiently update a corresponding data to be updated by minimizing connection with a karaoke device in an karaoke remote control device data update system. SOLUTION: When a prescribed data in which release information is related to a data storage section, and prescribed remote control devices 21 and 22 are connected to connection connectors C1 to C3 of a collective type cradle 12, and the other remote control devices 21 and 22 are connected to the other connectors at the back, the remote control devices connected at the back obtain the release information of the corresponding data from either or both of the other remote control devices. If own release information is "small", the corresponding data of the other remote control device is obtained and updated in priority. If it is "large", the corresponding data is transmitted to the other remote control device. COPYRIGHT: (C)2009,JPO&INPIT

Karaoke remote control device data update system

System
zum Verhindern des Berstens eines Transformatortanks (100), welches
auf einem Transformator bereitgestellt ist, und welches ein Bersten
des Transformatortanks aufgrund eines plotzlichen Druckanstiegs im Transformator
verhindert, wobei das System umfasst: ein Stutzteil (110),
das im Transformatortank (100) installiert ist und ein Abschirmblech
(111) zum Absorbieren eines magnetischen Feldes stutzt, so
dass das Abschirmblech nicht direkt am Transformatortank befestigt
ist; eine Vielzahl von Berstscheiben (120), die jeweils auf
eine Vielzahl von Rohren (121) aufgesetzt sind, die sich vom Transformatortank
nach ausen
erstrecken, und bersten, wenn der Druck im Transformatortank ein
vorbestimmtes Druckniveau erreicht, wodurch sich Durchbruche offnen; eine
Vielzahl von Entlastungstanks (130), die vertikal an einer Position,
die an den Transformator angrenzt, angebracht sind, und an die Rohre
(121) angekoppelt sind, wodurch Raum zum Speichern von Isolierol bereitgestellt
wird; einem Olstandsanzeiger
(140), der an einer niedrigeren Position in einem jeden der Entlastungstanks
(130) aufgesetzt ist, und...

System zum Verhindern des Berstens eines Transformatortanks

Disclosed is a high voltage generating device provided with: a high-voltage transformer consisting of an iron core, and a winding that has a wire wound around the aforementioned iron core; a rectifier installed adjacent to the aforementioned high-voltage transformer; a magnetic shield that blocks the magnetic field generated by the aforementioned winding; a tank within which the aforementioned high-voltage transformer, the aforementioned rectifier, and the aforementioned magnetic shield are placed; and insulation oil to be filled into the aforementioned tank. Apertures are formed at portions of the magnetic shield, and the magnetic shield is installed between the high-voltage transformer and the inner wall of the tank, and separately from the inner wall of the tank. In this case, the aforementioned magnetic shield is installed on the faces of the inner wall of the tank, except the face of the inner wall of the tank existing at the extension of a line extending from the high-voltage transformer towards the rectifier installed adjacent to the high-voltage transformer, and the faces of the inner wall of the tank that are in the axial direction of the winding.

High voltage generating device, and x-ray ct device using the same

PURPOSE:To facilitate changeover of voltage, by a method wherein the primary side or the secondary side which have two rated voltages is constituted of a first winding to which a low rated voltage is applied and a second winding to which a high rated voltage is applied, the insulation of terminals of both of the windings is ensured, and the terminals are led out to the outside of a tank. CONSTITUTION:An iron core 1 is provided with a low voltage winding 1, an intermediate voltage winding 3, a tap 4, and a high voltage winding 5, which are covered with a tank 6. The terminals of the intermediate voltage winding 3 and the high voltage winding 5 are led out to an SF6 gas insulating bus 7, through oil/gas wall bushings 81, 82, 83. Thereby voltage changeover work is enabled without extracting oil. Since it is unnecessary to increase insulation distance, a dual rated voltage transformer can be easily miniaturized.

Dual rated voltage transformer

PROBLEM TO BE SOLVED: To prevent local overheat in magnetic material shields and a tank and the thermal degradation of insulators protecting the shields or the like, by a method wherein insulators are respectively provided vertically between the shields and the inside of the tank in the height direction of the tank to form cooling flow paths. SOLUTION: Magnetic material shields 8 formed by laminating silicon steel plates of a thin plate thickness in a width W are provided side by side at the positions opposing to inside and outside winding wires 4 and 5 on the inside of a tank 7 housed with a transformer body, comprising a main leg 1, side legs 2, upper yoke parts 3 and the inside and outside winding wires 4 and 5, via prescribed gap parts in the lateral directions, in such a way that the longitudinal directions of the shields 8 are made perpendicular and the shields 8 are respectively provided with press metal fittings. Insulators are provided for protecting the shields 8, and insulators 10 are respectively provided vertical between the insulators and the inside of the tank 7 in the height direction of the tank to form cooling flow paths 11. As a result, local overheating in the shields 8 and the tank 7 and the thermal degradation of the insulators for protecting the shields 8 can be prevented from being caused.

Kudo Sakae

Papers

Dual rated voltage transformer

Magnetic shielding device for stationary induction electrical apparatus