JPS602115U

JPS602115U - Steam temperature control device

Info

Publication number: JPS602115U
Application number: JP9235783U
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

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図及び第
４図はそれぞれ本考案の他の実施例を示す要部構成図で
ある。　　゛１・・・１次過熱器、２・・・過熱温度低減器、３・・
・２次過熱器、４・・・注水流量調節弁、５・・・過熱
温度低減器出口蒸気温度調節計、６・・・主蒸気温度調
節計、７．９及び１１・・・温度検出器、１３・・・減
算器、１４・・・演算器、１５・・・加算器、１６・・
・注水流量検出器、１７・・・注水流量調節計、１８・
・・過熱温度低減器入口蒸気流量検出器。　　　−FIG. 1 is a configuration diagram showing an example of a conventional steam temperature control device;
FIG. 2 is a block diagram showing one embodiment of the present invention, and FIGS. 3 and 4 are block diagrams of main parts showing other embodiments of the present invention, respectively.゛1... Primary superheater, 2... Superheating temperature reducer, 3...
・Secondary superheater, 4...Water injection flow control valve, 5...Superheating temperature reducer outlet steam temperature controller, 6...Main steam temperature controller, 7.9 and 11...Temperature detector , 13... Subtractor, 14... Arithmetic unit, 15... Adder, 16...
・Water injection flow rate detector, 17...Water injection flow rate controller, 18.
・Superheat temperature reducer inlet steam flow rate detector. −

Claims

[Scope of utility model registration request]

In a boiler having a superheater and a superheat temperature reducer using a water injection method in the steam flow path from the boiler drum to the load, the outlet steam temperature of the superheater located after the superheat temperature reducer on the steam flow is input, a superheater outlet temperature controller for controlling the temperature to a constant value; a temperature detection means for detecting the inlet steam temperature of the superheating temperature reducer; a means for estimating the inlet steam flow rate of the superheating temperature reducer; The output of the vessel inlet steam temperature detection means, the output of the attenuator inlet steam flow rate estimating means, and the output of the superheater outlet steam temperature regulator are input, and it is specified based on a predetermined correspondence relationship on the heat balance of these input values. a computing unit that determines the output of the computing unit; a superheating temperature reducer outlet steam temperature regulator that performs an adjustment operation so that the superheating temperature reducer outlet steam temperature matches the output of the superheater outlet temperature regulator; and the output of the computing unit. and an adder for adding the output of the superheating temperature reducer outlet steam temperature regulator; and a water injection flow rate control mechanism that takes the output of this adder as an input and adjusts the water injection flow rate to the superheating temperature reducer in proportion to this input. A steam temperature control device comprising: