Title:
DEVICE TO MONITOR ATTACHMENT OF SCALE TO HEAT EXCHANGER
Document Type and Number:
Japanese Patent JP2675703
Kind Code:
B2
Abstract:
PURPOSE: To carry out an elaborate scale removal by judging whether or not scale is much attached particularly near a plurality of heat exchanging tubes in a supply water heater, etc.
CONSTITUTION: Respective output signals of process measurement sections 44, 45-1-45-n, 46, 47, 48 at supply water inlet and outlet, extraction steam inlet, and drain outlet and inlet are inputted to a performance operation section 49, and there operation is carried out in order to evaluate the heat exchanging performance for each group of heat exchanging tubes 31. The output signals of the performance operation section 49 as the results of the calculations are inputted to a judgement section 51. To the judgement section 51 the output signal of a pressure difference operation section 43 and also the load signals 50 of an electric power plant, etc., are inputted, and from the judgement section 51 the result 52 of scale skin formation judgement is outputted. And the spots where scale attaches are judged by this. With this arrangement it is possible to carry out an especially elaborate scale removal work for the heat exchanging tubes 31 near the spot where scale attaches.
Inventors:
Michio Watanabe
Application Number:
JP32005491A
Publication Date:
November 12, 1997
Filing Date:
November 07, 1991
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
F28G15/00; F22B37/38; F28G13/00; (IPC1-7): F22B37/38; F28G15/00
Domestic Patent References:
| JP539902A |
Attorney, Agent or Firm:
Kazuo Sato (3 others)