System and method for calibrating helium flow of high-temperature gas cooled reactor
A high-temperature gas-cooled reactor and gas flow technology, applied in the field of electric power, can solve the problem that the helium flow device cannot be calibrated online, and achieve the effect of simple implementation
Pending Publication Date: 2022-04-15
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology
[0004] Aiming at the problem that the helium flow device of the high temperature gas-cooled reactor cannot be calibrated online, the present invention provides a system and method for calibrating the helium flow of the high temperature gas-cooled reactor
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Embodiment
[0066] During the heating and dehumidification process of the HTGR demonstration project, the following data were collected:
[0067] The outlet temperature, pressure, and flow rate of the secondary circuit are: 162.8°C, 6.51MPa, 24.69kg / s, and the specific enthalpy value is 690.38kj / kg; the inlet temperature, pressure, and flow rate of the secondary circuit are 166.1°C, 6.62MPa, 24.69kg / s The s specific enthalpy value is 704.66.
[0068] The outlet temperature and pressure of the primary circuit: 160.2℃, the pressure is 5.55MPa, the specific enthalpy value is 2272.82kg / s; the primary circuit inlet temperature and pressure are 156.4℃, 5.62Mpa, and the flow rate of the primary circuit is 65.1kg / s: the specific enthalpy value for 2269.36.
[0069] The calculated flow calibration coefficient of the primary circuit is 0.97.
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The invention discloses a system and a method for calibrating helium flow of a high-temperature gas cooled reactor. The system comprises an evaporator, an evaporator primary loop outlet measuring point, a main helium fan, a primary loop reactor system, an evaporator primary loop inlet measuring point and the like. Temperature and pressure measuring points used in the method can be checked off line; a secondary loop feed water flow measuring point can be accurately calibrated on line; in the checking process, no measuring point needs to be additionally arranged in a loop, and implementation is easy; the checking process can be carried out in a loop heating and dehumidifying stage without occupying an additional window.
Description
technical field [0001] The invention belongs to the technical field of electric power, and in particular relates to a system and method for calibrating the helium flow of a high-temperature gas-cooled reactor. Background technique [0002] The air volume is an important parameter of the fan. The accuracy of the air volume is not only related to the air volume measurement device, but also related to the pipeline characteristics. For the air volume measurement device of a thermal power plant, after the fan, air volume measurement point, and air duct are installed, additional measurement points should be installed on the air duct, and the online air volume measurement device should be calibrated with a calibrated air volume measurement instrument. Only in this way can the air volume be measured correctly and participate in the control of the unit. [0003] The main helium fan of the HTGR nuclear power plant is the core equipment of the HTGR nuclear power plant. The helium flow...
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IPC IPC(8): G01F1/00G01D21/02
Inventor 马晓珑郑金祁沛垚张瑞祥刘俊峰高美李康严义杰张延旭
Owner XIAN THERMAL POWER RES INST CO LTD