Patent ID: 9632028
Date: 2017-04-25
CPC Classifications: F01K,G01N

Claim:
1. A dryness measurement device comprising: a pipe arranged in a horizontal direction; a light incident portion allowing light to be incident along a vertical surface passing a lowest part of the pipe; a light transmitting portion allowing light transmitted through or reflected on wet steam flowing in the pipe to be transmitted; a detecting portion detecting an intensity of transmitted light; and a dryness measurement portion measuring a dryness of the wet steam based on the detected intensity of light, wherein the light transmitting portion has a solid shape including a horizontal plane portion and the light transmitting portion is arranged in a bottom portion of the pipe so that a first portion where the vertical surface crosses the horizontal plane portion of the light transmitting portion is higher than a second portion where the vertical surface crosses the lowest part, as well as so that a portion crossing the horizontal plane portion is in a lowest position on a cross line where a cross section of the pipe including a point where light is incident on the horizontal plane portion crosses an inner surface of the pipe and the light transmitting portion.