NOZZLE THERMOCOUPLE ATTACHING MECHANISM

摘要

PROBLEM TO BE SOLVED: To provide a nozzle thermocouple attaching mechanism capable of accurately measuring the temp. of the designated region of a nozzle without receiving the effect of the heat flow from the heater mounted on the nozzle in good response and reproducibility. SOLUTION: A heat insulating member 12 having a shape capable of hermetically sealing a large diameter temp.-sensitive member 11 and a thermocouple inserting hole 4 is mounted on the leading end part of a thermocouple 10 measuring nozzle temp. The thermocouple inserting hole 4 bored in a nozzle 1 at a predetermined region is formed into a shape having a production diameter capable of bringing the temp.-sensitive member 11 to a close contact state and the predetermined angle corresponding to the leading end part of the thermocouple 10 and the leading end part of the thermocouple 10 is inserted into the thermocouple inserting hole 4 under pressure by the ring-shaped pressing metal fitting 5 through the heat insulating member 12 and the thermocouple 10 is attached and fixed to the nozzle 1. The thermocouple inserting hole 4 is brought to a hermetically sealed state by the heat insulating member 12 and the contact area of the temp.-sensitive part of the thermocouple 10 can be increased by the temp.-sensitive member 11.