JPS59139712U

JPS59139712U - Boiler water supply control device

Info

Publication number: JPS59139712U
Application number: JP3349183U
Authority: JP
Inventors: 純一近藤; 大和田　央益; 今井　良彦; 森田　忠司; 毅長谷川; 沼田　照治; 和彦中田
Original assignee: 三菱重工業株式会社; 菱日エンジニアリング株式会社
Priority date: 1983-03-10
Filing date: 1983-03-10
Publication date: 1984-09-18

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 the drawing]

第１図はドラムレベル検出器を例示した図、第２図は本
考案によるボイラの給水制御装置を例示した図、第３図
は負荷変動に対するドラムレベル−□□□□ 変化を示す図、第４図は負荷変動に対する燃料量制御信
号および給水量の変化を示す図である。１・・・圧力計、２・・・蒸気圧設定器、３・・・加減
算器、４・・・比例演算器、５・・・積分演算器、６・
・・加算器、７・・・燃料量制御信号、８・・・レベル
計、９・・・ドラムレベル設定器、１０・・・比例演算
器、１１・・・積分演算器、１２・・・加算器、１３・
・・給水量制御信号、　　　１４・・・給水制御弁、１
５・・・燃料制御弁、１６・・・加減算器、１７・・・
加算器、１Ｂ・・・関数発生器、Ａ・・・燃料量用比例
積分ＰＩ制御器、Ｂ・・・給水用ＰＩ制御器。第　２図Ａ、、Ｏ’−−−−−−−−−−−− −−ゴ乙−Figure 1 is a diagram illustrating a drum level detector, Figure 2 is a diagram illustrating a boiler water supply control system according to the present invention, Figure 3 is a diagram showing changes in drum level due to load fluctuations, FIG. 4 is a diagram showing changes in the fuel amount control signal and water supply amount with respect to load fluctuations. DESCRIPTION OF SYMBOLS 1... Pressure gauge, 2... Steam pressure setting device, 3... Adder/subtractor, 4... Proportional calculator, 5... Integral calculator, 6...
... Adder, 7... Fuel quantity control signal, 8... Level meter, 9... Drum level setter, 10... Proportional calculator, 11... Integral calculator, 12... Adder, 13.
...Water supply amount control signal, 14...Water supply control valve, 1
5...Fuel control valve, 16...Adder/subtractor, 17...
Adder, 1B...Function generator, A...Proportional-integral PI controller for fuel amount, B...PI controller for water supply. Figure 2 A,,O'----------

Claims

[Scope of utility model registration request]

a first controller for generating a boiler drum pressure control signal;
a second controller that generates a drum level control signal; and an output of a function generator that receives the output of the first controller;
A water supply control device for a boiler, characterized in that it is equipped with an adder that adds the output of the controller.