JPS603376U

JPS603376U - Contact widening circuit for valve control

Info

Publication number: JPS603376U
Application number: JP9732783U
Authority: JP
Inventors: 渡部　隆行
Original assignee: 三菱電機株式会社
Priority date: 1983-06-21
Filing date: 1983-06-21
Publication date: 1985-01-11

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図は従来の弁制御用接点増巾回路の構成図、第２図
はこの考案の一実施例による弁制御用接点増巾回路の構
成図、第３図は同実施例の全閉位置検出ａ接点、ｂ接点
、閉側トルクスイッチの動作状態を示す動作状態説明図
ある。１・・・制御電源、２ａ・・・全閉位置検出ａ接点、２
ｂ・・・全閉位置検出す接点、３・・・全閉接点増巾用
ラッチリレー、３ａ・・・全閉接点増巾用ラッチリレー
ａ接点、３ｂ・・・全閉接点増巾用ラッチリレーｂ接点
、５・・・閉側トリクスイッチ。なお図中同一符号は同
一、又は相当部分を示す。Fig. 1 is a block diagram of a conventional valve control contact widening circuit, Fig. 2 is a block diagram of a valve control contact widening circuit according to an embodiment of this invention, and Fig. 3 is a fully closed position of the same embodiment. FIG. 2 is an explanatory diagram of operating states showing operating states of a detection a contact, a b contact, and a closing-side torque switch. 1... Control power supply, 2a... Fully closed position detection a contact, 2
b...Contact for fully closed position detection, 3...Latch relay for fully closed contact increase width, 3a...Latch relay a contact for fully closed contact increase, 3b...Latch for fully closed contact increase width Relay B contact, 5...Close side trick switch. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

In a valve control contact amplification circuit that controls the fully closed position of a torque shutoff type electric valve or manual valve, a shutoff position is located behind the fully closed position of the electric valve or manual valve, and the circuit operates at the shutoff position. A contact amplification circuit for valve control, characterized in that a torque switch is provided, and the torque switch serves as an interlock for confirming closure.