3results about How to "Reduce electric power" patented technology

A heat exchanger system for operating a fuel cell stack is proposed, comprising: a first compressor and a second compressor for supplying cathode gas to the fuel cell stack, wherein the second compressor is fluidly arranged after the first compressor; a turbine mechanically coupled to the second compressor to which the discharged cathode gas from the fuel cell stack flows; a first heat exchanger thermally coupled to the cathode gas supplied between the first and second compressors; a second heat exchanger thermally coupled to the cathode gas supplied downstream of the second compressor; and a fourth heat exchanger thermally coupled to the discharged cathode gas downstream of the turbine; wherein the fourth heat exchanger is thermally variably coupled to the first and second heat exchangers to control the heat exchange for cooling the first and second heat exchangers.

The utility model discloses a kind of steel aluminium pipe joints, including first pipe and second pipe, first pipe is steel pipe, the second pipe is aluminium pipe;First pipe and second pipe coaxially are arranged, and the tail end of the first pipe is opposite the head end of the second pipe;Sealing thread structure for fixedly connecting both between the tail end of the first pipe and the head end of the second pipe is equipped;In the utility model brazing welding sealing layer is the sealing layer formed by brazing process, which guarantees the sealing property of pipe joint, unlike the restriction influence of power grid electric power in prior art, brazing process in the application, electric power requirement is not high, and in brazing process in the application, as long as power allows, multiple pipe joints can be simultaneously brazed, to improve production efficiency and also can be quickly realized by cooperation of external thread and internal thread Interfacing and thread fixing, its fixing efficiency is high, there is no requirement to the thickness of first pipe and second pipe, and it is convenient and fast when connecting.

The application provides a three-phase turbo-generator stator double-outline structure and a turbo-generator device, and relates to the technical field of turbo-generators. The structure comprises a stator, a first winding arranged on the stator, and an excitation end and a steam end located at opposite ends of the stator. The first winding comprises a first sub-winding and a second sub-winding, and the first sub-winding and the second sub-winding each comprise a plurality of first coils connected in sequence in a head-to-tail manner. The first sub-winding is led out through the excitation end, the second sub-winding is led out through the steam end, and the electric signal transmission direction of the first coils in the first sub-winding and the electric signal transmission direction of the first coils in the second sub-winding are the same. It can be seen that the double-outline structure is a double-end outline structure with the excitation end and the steam end as the two ends, and the current of the stator is led out through the excitation end and the steam end, so that the current of each outline end can be greatly reduced, the electric power of the generator can be effectively reduced, the magnetic leakage field and the electrical loss can be reduced, and a series of problems caused by the large current of the stator can be eliminated.