JPS5918110U - Drum level control device for waste heat boiler - Google Patents

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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のドラムレベル制御装置の一例を示す図、
第２図は本考案によるドラムレベルル制御装置の実施例
を示す図、第３図は弁開度と蒸気負荷変動との関係を示
すグラフである。 １．２・・・流量検出器、３・・・ドラムレベル検出器
、４・・・加減演算器、５・・・ドラムレベル調節計、
６・・・設定器、７・・・給水流量調節弁、８・・・排
熱ボイラ、９・・・検出器、１０・・・蒸気加減弁、１
１・・・蒸気タービン、１２・・・変化率演算器。FIG. 1 is a diagram showing an example of a conventional drum level control device.
FIG. 2 is a diagram showing an embodiment of the drum level control device according to the present invention, and FIG. 3 is a graph showing the relationship between valve opening degree and steam load fluctuation. 1.2...Flow rate detector, 3...Drum level detector, 4...Adjustment calculator, 5...Drum level controller,
6... Setting device, 7... Water supply flow rate control valve, 8... Exhaust heat boiler, 9... Detector, 10... Steam control valve, 1
1... Steam turbine, 12... Rate of change calculator.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 排熱ボイラに送られる給水流量信号と、排熱ボイラから
送り出される蒸気流量信号と、排熱ボイラの水位信号と
の三要素信号を用いて排熱ボイラ入口側に設けた給水流
量調節弁を開閉制御するものにおいて、前記給水流量調
節弁に開閉信号を印加せしめるドラムレベル調節計に蒸
気加減弁の開度信号を加えたことを特徴とする排熱ボイ
ラのドラムレベル制御装置。The water supply flow rate control valve installed at the inlet of the waste heat boiler is opened and closed using three-element signals: the water supply flow rate signal sent to the waste heat boiler, the steam flow rate signal sent from the waste heat boiler, and the water level signal of the waste heat boiler. A drum level control device for a waste heat boiler, characterized in that an opening signal of a steam control valve is added to a drum level controller that applies an opening/closing signal to the water supply flow rate control valve.