Abstract
In order to promote the power stability of nuclear power units, the KME thermal balance principle is used to further analyze the factors affecting the flow of the standard orifice plate of the nuclear power plant KME system (Test Instrumentation). The high-accuracy three-coordinate measuring machine is used to detect the arc radius of the entrance edge of the standard orifice plate and the inner diameter of the standard orifice plate. Analysis the operation history data of the standard orifice plate of the nuclear power plant KME system. Study the running radius of the entrance edge of the same orifice plate and the inner diameter of the standard orifice plate under different operating units. Obtain the influence of the arc radius of the entrance edge of the standard orifice plate and the inner diameter of the standard orifice plate of different types of units.
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