Temperature compensation kettle cover and temperature compensation kettle of irradiation monitoring pipe test device

Abstract

The invention discloses a temperature compensation kettle cover and a temperature compensation kettle of an irradiation monitoring pipe test device. The temperature compensation kettle comprises a kettle body, a temperature compensation plate and a temperature compensation kettle cover, the temperature compensation kettle cover comprises a kettle cover and a plurality of compensation temperature sensors arranged on the kettle cover, at least three compensation temperature sensors are uniformly arranged on the outer side of the circumferential surface of the kettle cover, and one compensation temperature sensor is arranged in the middle of the outer side of the kettle cover. Each compensation temperature sensor is connected to an external automatic control system, and the temperature of each compensation temperature sensor is tested in real time. The temperature compensation kettle cover is used for being connected with a kettle body matched with the temperature compensation kettle cover for use, and when the difference value between the mean value of all the compensation temperature sensors and the external reference temperature exceeds a set threshold value, the external automaticcontrol system conducts heating by controlling the temperature compensation plate between the kettle cover and the kettle body to compensate the temperature of the kettle cover. According to the invention, temperature loss can be effectively prevented, and the temperature in the cavity is kept accurate and uniform.

Description

technical field [0001] The invention belongs to the field of electric power, in particular to the field of nuclear power, in particular to a temperature compensation kettle cover and a temperature compensation kettle of a radiation supervision tube test device in the field of nuclear power. Background technique [0002] Due to the long-term radiation of the pressure vessel in the nuclear power plant, the performance or structure of the pressure vessel will change, which is not conducive to the safe operation of the nuclear power plant. Therefore, it is necessary to carry out long-term continuous monitoring of the pressure vessel. The radiation supervision tube is made of the base metal and weld material of the pressure vessel, and is taken out as planned for performance testing and analysis during the reactor life, so as to monitor and predict the performance change of the pressure vessel material after irradiation. [0003] However, due to the differences in material and ma...

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Problems solved by technology

[0003] However, due to the differences in material and manufacturing process of the supervisory tube, the test results will be affected. In order to eliminate the influence of the supervisory tube itself, an online detection test device for the irradiation supervisory tube is needed. Since the kettle body is mainly subjected to high temperature and high pressure , and the lid of the kettle needs to open multiple through holes to control the filling and discharging of gas and the input of data lines and control lines in addition to being able to withstand high temperature and high pressure. Therefore, the material of the kettle lid must be easy to process and install, which results in Due to the difference in the material of the kettle body, the heat dissipation caused by the different materials, as well as the through holes and the installation contact surface will cause local abnormal temperature points in the cavity of the high temperature and autoclave near the lid of the kettle, which will affect the cavity. The overall temperature uniformity of the

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