Flow meter pipe body deformation measuring method of nuclear power unit water supply system

The invention discloses a method for measuring the deformation of a pipe body of a pipe section type flowmeter of a water supply system of a nuclear power unit. The method comprises the following steps: filling a sealed pipe body with water through a water pump; heating and pressurizing the water in the pipe body until the water temperature and the water pressure reach preset test temperature and pressure; the micrometer monitors deformation data of the pipe body in real time and transmits the deformation data to the computer. By the adoption of the technical scheme, the flow meter pipe body deformation measuring method of the nuclear power unit water supply system can simulate the high-temperature and high-pressure working environment of the pipe body in the mode that water in the pipe body is heated and pressurized, so that the deformation of the pipe body in the high-temperature and high-pressure working environment can be measured, the flow measuring precision is improved, and the measuring accuracy is im