Reactor core neutron and temperature measurement detector assembly

The invention relates to the field of automation control, in particular to a reactor core neutron and temperature measurement detector assembly. The detector assembly comprises an end plug, a stainless steel sleeve, a reducing transition pipe, a sealing penetration piece, a connector installation pipe and a connector which are connected in sequence. A cavity is formed in the stainless steel sleeve and the reducing transition pipe, and a lower protective sleeve and a thin-walled pipe are arranged in the cavity from bottom to top; the cable adapter performs flexible lead adapter protection on the thermocouple and the armored cable of the self-powered detector, a flexible lead is welded with a contact pin of the connector, and the welding position of the contact pin is packaged by assembling the fixed sealing cylinder in the connector; the cold end of the thermocouple and the cable adapter are mounted in a fitting manner and are kept at the same height; the thermocouple and the self-powered detector penetrate th