Measuring method for temperature of supercritical once-through boiler membrane wall

This invention relates to a temperature measuring means of hypercritical monotube boiler membrane water-cold wall. The method as follows: (1) measure and count the stress of water-cold wall, according to outcome to select tapping point on water-cold wall;(2)at the tapping point of water-cold wall, at transverse direction open hole of diameter 1.1 mm and external margin 2 mm;(3) Greet thermometric couple in the hole, via it to measure water-cold wall's temperature of fire side. The advantage: (1) thermo couple measuring end directly contact wall of fire side, can measure pipe surface temperature of fire side truly. (2) for the thermocouple lay interior of open pore, avoid directly accept furnace inside high temperature radiation, abrasion and erode and so on badness impact, widely prolong service life generally for several years upwards;(3) if thermocouple deformed, the change will be easy;(4) avoid bursting of a tube, reduce possibility of trouble, cut down operating cost.