Taylor couette flow axial heat transfer testing device and testing method

Abstract

The invention discloses a Taylor couette flow axial heat transfer testing device which comprises a housing, an upper end cover, a lower end cover, a flywheel and a testing unit. The upper end cover and the lower end cover are respectively connected in a sealing manner with the housing and form a tank-shaped gap cavity together with the flywheel arranged inside the housing; the upper end cover provides a heat source; the lower end cover is provided with a liquid inlet for filling fluid into a lower disk face gap of the tank-shaped gap cavity and a liquid outlet for outputting the fluid subjected to heat mixing; the flywheel drives the gap fluid to rotate by a rotating shaft so as to transfer heat of the upper end cover to the lower disk face gap through a tank-shaped vertical gap in the axial direction; the testing unit comprises a plurality of thermoscopes arranged on the housing, thermoscopes arranged at the liquid inlet and the liquid outlet of the lower end cover, and a flowmeter arranged at the liquid inlet of the lower end cover. The Taylor couette flow axial heat transfer testing device solves the problem that an existing testing device seldom researches a transfer rule of heat in gap annular flow in the axial direction and is difficult to provide technical parameters for flywheel gap flow passage structure design of a shielding motor main pump.

Description

technical field [0001] The invention relates to the technical field of convective heat transfer, in particular to a Taylor Coot flow axial heat transfer testing device and a testing method thereof. Background technique [0002] As the power source of the nuclear reactor core coolant cooling medium circulation, the nuclear main pump is known as the heart of the nuclear reactor. In the main pump of the nuclear reactor in service, the shaft seal pump is used as the main pump of the core coolant. However, the emergence of previous nuclear accidents has put forward higher requirements for nuclear power safety. In order to improve the safety of the system in principle, the shaft-sealed pump that was once widely used was shielded without leakage due to the technical difficulty of high-pressure dynamic sealing. Pump instead, used in the third generation nuclear power technology. The shielded main pump introduces high-temperature and high-pressure fluid into the motor through the c...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a Taylor Coot flow axial heat transfer test device, which solves the problem that the existing test devices rarely study the law of heat transfer in the axial direction in the gap circulation, and it is difficult to shield the flywheel gap channel structure of the main pump of the motor. The problem of providing technical parameters in design

[0006] Another object of the present invention is to provide a test method for the above-mentioned Taylor Coot flow axial heat transfer test device, to solve the lack of axial heat transfer measurement method in the gap circulation, and to solve the problem that the existing test method is difficult for liquid lubricated bearings. The problem of providing technical parameters in design

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