JPS602114U

JPS602114U - Steam temperature control device

Info

Publication number: JPS602114U
Application number: JP9235683U
Authority: JP
Inventors: 和幸飯塚
Original assignee: 株式会社東芝
Priority date: 1983-06-16
Filing date: 1983-06-16
Publication date: 1985-01-09
Also published as: JPH0227288Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は、従来の蒸気温度制御装置の一例を示す構成図
、第２図は本考案の一実施例を示す構成図、第３図は本
考案の他の実施例（要部）を示す構成図である。１・・・１次過熱器、２・・・１次減温器、３・・・２
次過熱器、４・・・２次減温器、５・・・３次過熱器、
６・・・３次過熱器出口温度調節計、７，１０．１４及
び１５・・・温度検出器、８・・・２次減温器出口温度
調節計、９・・・第２注水弁、１１・・・２次過熱器出
口温度調節計、１２・・・１次減温器出口温度調節計、
１３・＝・第１注水弁、１６・・・主蒸気流量検出器、
１７及び２０・・・演算器、１８及び２５・・・注水流
量検出器、１９・・・加減算器、２１及び２２・・・加
算器、２３及び２４・・・注水流量調節計。Fig. 1 is a block diagram showing an example of a conventional steam temperature control device, Fig. 2 is a block diagram showing an embodiment of the present invention, and Fig. 3 is a block diagram showing another embodiment (main part) of the present invention. FIG. 1... Primary superheater, 2... Primary desuperheater, 3... 2
Secondary superheater, 4...Second superheater, 5...Third superheater,
6...Third superheater outlet temperature controller, 7, 10.14 and 15...Temperature detector, 8...Secondary desuperheater outlet temperature controller, 9...Second water injection valve, 11... Secondary superheater outlet temperature controller, 12... Primary desuperheater outlet temperature controller,
13...=first water injection valve, 16...main steam flow rate detector,
17 and 20...Arithmetic unit, 18 and 25...Water injection flow rate detector, 19...Adder/subtractor, 21 and 22...Adder, 23 and 24...Water injection flow rate controller.

Claims

[Scope of utility model registration request]

A plurality of superheaters and attemperators using a water injection method are installed in each steam flow path from the boiler drum to the load, and the main steam temperature and the superheater outlet temperature of each stage are controlled by the heating and cooling of the water injection. A superheater outlet temperature controller that generates a control output to control the outlet temperature to a set value, and a water injection flow rate estimation that detects the water injection flow rate of each desuperheater located after the superheater when viewed from the upstream side of the steam flow. means, a main steam flow rate detector for detecting the main steam flow rate, and an adder/subtractor for subtracting the sum of the water injection flow rate of the temperature-reducing mold located downstream of the superheater from the output of the main steam flow rate detector; A computing unit which generates a predetermined function output by inputting the output of the adder/subtractor or the output of the main steam flow rate detector if the superheater is the final stage, and the output of the temperature controller and the output of the computing unit. an adder for adding, and a desuperheater outlet temperature regulator that generates a control output for controlling the outlet temperature of the attemperator in the preceding stage of the superheater using the output of the adder as a set value, and applies it to the water injection flow rate adjustment mechanism. A steam temperature control device comprising: