JPS58132307U

JPS58132307U - Water supply control device

Info

Publication number: JPS58132307U
Application number: JP2970082U
Authority: JP
Inventors: 須賀　保雄
Original assignee: 株式会社東芝
Priority date: 1982-03-03
Filing date: 1982-03-03
Publication date: 1983-09-06

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の給水制御装置を示す概略図、第２図は給
水ポンプの運転条件を示す線図、第３図は本考案の給水
制御装置の一実施例を示す概略図、第４図乃至第６図は
給水ポンプの運転条件を示す線図である。１・・・給水ポンプ、２・・・給水調節弁、４・・・差
圧発信器、６．１４・・・調節計、８・・・差圧設定器
、１０・・・圧力発信器、１６・・・高値優先回路、２
０・・・関数発生器、２２・・・流量発信器。Fig. 1 is a schematic diagram showing a conventional water supply control device, Fig. 2 is a diagram showing operating conditions of a water supply pump, Fig. 3 is a schematic diagram showing an embodiment of the water supply control device of the present invention, and Fig. 4 6 to 6 are diagrams showing operating conditions of the water supply pump. DESCRIPTION OF SYMBOLS 1... Water supply pump, 2... Water supply control valve, 4... Differential pressure transmitter, 6.14... Controller, 8... Differential pressure setting device, 10... Pressure transmitter, 16...High value priority circuit, 2
0...Function generator, 22...Flow rate transmitter.

Claims

[Scope of utility model registration request]

A controller that generates a first rotational speed command signal to control the water supply pump so as to keep the differential pressure across the water supply control valve constant; and a first controller that indicates a detected value of the outlet pressure or rotational speed of the water supply pump. A transmitter that generates a detection signal, a transmitter that generates a second detection signal that indicates a detected value of flow rate, and a relationship between the flow rate and the outlet pressure or rotation speed of the water supply pump, using the second detection signal as input. a function generator having as an input-output characteristic a characteristic indicative of a limit of a safe operating state in the first rotation; A controller that generates a rotation speed command signal receives the first and second rotation speed command signals, and controls the water supply pump according to the first rotation speed command signal to keep the water pump within the limits of a safe operating state. When the operation is to be performed, the first rotation speed command signal is
If not, the water supply control device includes a priority circuit that provides the second rotation speed command signal to the water supply pump.