Research on Steam Hammer of Main Steam System in a Nuclear Reactor Type
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Abstract
Study the steam hammer by fast closing of main steam isolation valve of the nuclear island main steam system in some nuclear power type. Establish the model used "PIPENET" software and calculate the most steam hammer load in different pipes and the appearing time. The results show that the most steam hammer loads appear when closing the valve, the steam hammer load after the main steam isolation valve is larger than the one before the valve because of the relief device set before the valve. Meanwhile the opening and flow of the relief device are simulated. Further, analyse the steam hammer influence by the changing of the relief piping and the branch pipe from the main pipe. All above can be used for system design, stress calculation of pipe, and optimizing piping layout, which has great significance for improving the security of main steam system and nuclear power plants.
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