JPS5987504U

JPS5987504U - Deaerator water level control device

Info

Publication number: JPS5987504U
Application number: JP18135182U
Authority: JP
Inventors: 政志中本
Original assignee: 株式会社東芝
Priority date: 1982-11-30
Filing date: 1982-11-30
Publication date: 1984-06-13

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図はタービンバイパス装置を有する蒸気タービンプ
ラントの概略系統図、第２図は従来の脱気器水位制御装
置の系統図、第３図はタービンバ　　、イバス時におけ
る脱気器、復水器の水位、給水流量、復水流量の変化線
図、第、４図は本考案の脱気器水位制御装置の系統図、
第５図および第６図はそれぞれ関数発生器の特性線図で
ある。９・・・復水器、１０・・・復水ポンプ、１２・・・脱
気器水位調節弁、１３・・・脱気器、１４・・・給水ポ
ンプ、１６・・・タービンバイパス弁、２０・・・復水
流量検出器、２１・・・給水流量検出器、２２・・・脱
気器水位検出器、２３・・・脱気器水位調節計、２５・
・・水位制御′　演算器、２６・・・復水器水位検出器
、２７・・・関数発生器。躬１１１コヨ島域、−ナーバーーーー −第４目　　　　　− パ〜甲　　１２８４曜１２−Fig. 1 is a schematic system diagram of a steam turbine plant with a turbine bypass device, Fig. 2 is a system diagram of a conventional deaerator water level control device, and Fig. 3 is a system diagram of a conventional deaerator water level control device. Change diagrams of water level, water supply flow rate, and condensate flow rate; Figures 4 and 4 are system diagrams of the deaerator water level control device of the present invention;
5 and 6 are characteristic diagrams of the function generator, respectively. 9... Condenser, 10... Condensate pump, 12... Deaerator water level control valve, 13... Deaerator, 14... Water supply pump, 16... Turbine bypass valve, 20... Condensate flow rate detector, 21... Water supply flow rate detector, 22... Deaerator water level detector, 23... Deaerator water level controller, 25...
...Water level control' computing unit, 26...Condenser water level detector, 27...Function generator. 11 1 Koyo Island area, - Naber - 4th - Pa ~ Ko 1 284 Yo 12 -

Claims

[Scope of Claim for Utility Model Registration] 1. Control valve to control the flow rate of condensate flowing from the condenser to the deaerator to keep it constant by operating a control valve according to the water level of the deaerator. The deaerator water level control device includes a condenser water level detection device that detects the water level of the condenser, and an operation signal correction device that corrects the operation signal to the control valve based on the water level signal from the condenser water level detection device. A deaerator water level control device comprising: '2 The operation signal correction device includes a function generator that outputs a control signal in the direction of closing the control valve when the condenser water level falls below a set value;
The deaerator water level control device according to claim 1, characterized in that it comprises an adder that adds the output signal from the function generator to the operation signal to the control valve. 3. The operation signal correction device is a function generator that generates a signal that controls the upper limit value of the operation signal to the control valve when the condenser water level falls below a predetermined value.
A deaerator water level control device as described in the first claim of the utility model registration.