Design method and system for heat dissipation and ventilation parameters of reactor hall
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A design method and reactor technology, applied in computer-aided design, design optimization/simulation, calculation, etc., can solve problems such as air temperature cannot be too high, heat dissipation efficiency is low, and parameters are too many.
Pending Publication Date: 2022-03-11
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology
Since the air source comes from the vicinity of the sodium pump motor (in the reactor hall), it is necessary to ensure that the air temperature near the sodium pump cannot be too high, so as to avoid the low heat dissipation efficiency of the air supply system of the sodium pump motor and fail to me
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Embodiment 1
[0106] like figure 1 and figure 2 As shown, the main equipment in the reactor hall includes: primary circuit sodium pump motor, secondary circuit sodium pump motor, equipment preheating trap, slender equipment cleaning container, large and medium-sized equipment cleaning container, new components, loader, and in-plant transportation barrel Wait.
[0107] This embodiment provides a method for designing the heat dissipation and ventilation parameters of the reactor hall, including:
[0108] S1: According to the structural parameters of the ventilation system, the reactor hall, and the main heat dissipation equipment in the reactor hall, establish the fluid domain model inside the reactor hall.
[0109] The structural parameters include:
[0110] (1) The size parameters of the reactor hall, and the size of the main buildings in the hall;
[0111] (2) The distribution and size of sodium pumps and sodium pipelines;
[0112] (3) The layout and size of the air supply duct, the ...
Embodiment 2
[0180] like Figure 11 As shown, this embodiment provides a system for implementing the method for designing heat dissipation and ventilation parameters of the reactor hall in Embodiment 13, including: a model building module, a grid discretization module, a simulation analysis module, a calculation module, a judgment module and an execution module,
[0181] The model building module is used to establish the fluid domain model inside the reactor hall according to the structural parameters of the ventilation system, the reactor hall, and the main cooling equipment in the reactor hall;
[0182] The grid discretization module is connected with the model building module, and is used for grid discretization of the fluid domain model;
[0183] The simulation analysis module is connected with the grid discretization module, and is used to simulate and analyze the grid model for different hall air supply volumes according to the given fluid domain parameters including the heat dissipa...
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Abstract
The invention provides a design method and system for heat dissipation and ventilation parameters of a reactor hall, and the method comprises the steps: building a reactor hall fluid domain model, carrying out the grid discretization, obtaining different hall air supply amounts and motor air inlet temperatures through simulation, and carrying out the fitting to obtain a first formula; motor air supply is considered, different motor inlet air and exhaust air temperatures are obtained through simulation, and a second formula is obtained through fitting; calculating the heat dissipation value of the motor to obtain a third formula of the heat dissipation value of the motor and the exhaust air temperature of the motor, calculating the exhaust air temperature corresponding to the design value of the heat dissipation value of the motor according to the formula, calculating the air inlet temperature corresponding to the exhaust air temperature according to the second formula, calculating the ventilation quantity of the motor, and judging whether the ventilation quantity is greater than the design value of the ventilation quantity of the motor; if yes, the hall air output input value is increased, the step S4 is executed again, and if not, hall ventilation parameters are output. According to the hall air supply volume obtained through the method, it can be guaranteed that the air temperature in the hall meets the design requirement, and it can be guaranteed that air supply and heat dissipation of the sodium pump motor meet the design requirement.
Description
technical field [0001] The invention relates to the field of nuclear technology, in particular to a design method and system for heat dissipation and ventilation parameters of a reactor hall. Background technique [0002] The typical ventilation system of a fast reactor belongs to the nuclear island ventilation system. Its main function is to discharge a large amount of waste heat generated by the reactor device, other equipment, and pipelines, so as to avoid the rise of the air temperature inside the reactor pit, reactor hall and reactor building room, and ensure the normal operation of process equipment and The requirements for personnel to enter meet the relevant requirements for safe operation of the power plant. The ventilation system of the reactor hall is an important part of the typical ventilation system of the fast reactor. It is an important facility to ensure the normal operation of the staff and equipment in the hall. Therefore, the scientific design of the vent...
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