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4090results about "Transformers/inductances cooling" patented technology

Cooling methods

A superconducting system comprises a superconducting coil (3) mounted in a support (12). The coil is surrounded by a cryogen chamber (17) which is located radially outwardly from the coil (3) on the other side of the support (12). The cryogen chamber is in fluid communication with a cryogen recondensing unit (33) whereby vaporized cryogen may flow from the cryogen chamber (17) to the cryogen recondensing unit (33) to be recondensed in use before returning to the cryogen chamber. Thermally conductive means (25) is arranged to facilitate heat transfer from the superconducting coil (3) to the cryogen chamber (17) to vaporize cryogen contained therein in use and thereby remove heat from the coil. The thermally conductive means (25) is highly thermally conductive at cryogenic temperatures. In use, the highly thermally conductive means (25) facilitates transfer of heat from the coil (3) to the interior of the cryogen chamber (17) to vaporize cryogen located therein. A thermal conduction path is therefore used to transfer heat from the coil to the cryogen in the cryogen chamber. Cryogen vaporized in the cryogen chamber then flows to the cryogen recondensing unit (33) to be recondensed before returning to the chamber, while the vaporized cryogen acts as the heat transfer medium over the longer distance between the cryogen chamber and the recondensing unit.
Owner:TESLA ENG

Intelligent control method and intelligent control device of transformer cooling system

The invention discloses an intelligent control method and an intelligent control device of a transformer cooling system. The method comprises the following steps: detecting the cooling oil temperature and the load current value of the upper layer and the lower layer of a transformer; determining the group number, the table number and the time of a start/ stop cooler; starting/ stopping at least one oil pump; starting/ stopping at least one fan in a delay mode; detecting the current of the oil pump and the fan; entering a device debug mode; and recording events. The device comprises a DSP and ARM double-core hardware platform, wherein a DSP plate comprises a cooling oil temperature data acquisition and analysis module, an oil pump motor current data acquisition and processing module, an oil pump motor control module, a fan motor current data acquisition and processing module and a fan motor control module; and the ARM plate comprises a user interface, a communication module and a data storage module. The invention combines control, relay protection, real-time monitoring and diagnosis as a whole, has more intelligent on-line real-time control, can define and configure the parameter of the transformer cooling system, improves the production efficiency and saves the operation and maintenance cost of the transformer.
Owner:XIAN SHUANGHE SOFTWARE ENG +1

Liquid nitrogen strong cooling transformer and refrigerating method thereof

The invention relates to a liquid nitrogen strong cooling transformer and a refrigerating method thereof. The transformer comprises a transformer oil tank and a liquid nitrogen tank; the liquid nitrogen tank is connected with a liquid nitrogen outlet pipe; the transformer oil tank is connected with a gas nitrogen outlet pipe; an evaporating pipe is coiled in the transformer oil tank; one end of the evaporating pipe is communicated with the liquid nitrogen outlet pipe and the other end of the evaporating pipe is communicated with the gas nitrogen outlet pipe; the gas nitrogen outlet pipe is sequentially provided with a liquid nitrogen compressor, a condenser and a throttling valve; the tail end of the gas nitrogen outlet pipe extends into the liquid nitrogen tank; a temperature sensor is arranged in the transformer oil tank; and the liquid nitrogen outlet pipe is provided with a heat preservation electromagnetic valve electrically connected with the temperature sensor. The liquid nitrogen strong cooling transformer and the refrigerating method thereof have the beneficial effects that 1, heat exchange is carried out between liquid nitrogen and transformer oil, heat exchange efficiency is high and gas nitrogen is retransformed into liquid nitrogen by the liquid nitrogen compressor and the condenser and is recycled; and 2, the transformer oil in upper and lower cavities of the transformer oil tank is repeatedly circulated by a transformer oil circulating pipe and a circulating oil pump so as to enable the oil temperature to be balanced.
Owner:王文中
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