Temperature measuring device and system for built-in header of pressure vessel

The utility model discloses a temperature measuring device and system for a built-in header of a pressure vessel, and relates to thermocouple mode measurement, the structure of the measuring device is improved based on the existing measuring principle, the thermocouple is limited and guided through a guide measuring tube matched with the thermocouple, and the temperature of the built-in header of the pressure vessel is measured. According to the utility model, measurement errors caused by the fact that the head of the thermocouple is separated from a measurement part in the measurement process are avoided, the leakproofness and the measurement accuracy in the built-in header are ensured, the header temperature in a transient reactor thermal hydraulic system test can be accurately measured under complex working conditions, and meanwhile, the thermocouple is detachable and convenient to replace and maintain in time. 本实用新型公开了一种压力容器内置联箱的温度测量装置及系统，涉及热电偶方式测量，本方案基于现有的测量原理进行测量装置结构上的改进，通过与热电偶匹配的导向测量管对热电偶进行限位和导向，避免在测量过