JPS5954201U

JPS5954201U - Accumulator sealed gas leak detection circuit

Info

Publication number: JPS5954201U
Application number: JP14797182U
Authority: JP
Inventors: 誠平田
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 1982-10-01
Filing date: 1982-10-01
Publication date: 1984-04-09
Also published as: JPH0110482Y2

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図は従来のアキュムレータを備えた油圧操作回路図
、第２図は従来のガス漏れ検出回路図、第３図はアキュ
ムレータのガス容量−ガス圧力特性曲線図、第４図は本
考案に係るアキュムレータ封入ガス漏れ検出回路の一実
施例を示す回路図である。ＰＳｌ・・・・・・圧接端子、ＰＳ２・・・・・・圧接
端子、ＭＳ・・・・・・電磁開閉器（コイル）、Ｎ・・
・・・・補助継電器（コイル）、Ｔ・・・・・・限時継
電器（コイル）、Ｊ・・・・・・警報用補助継電器（コ
イル）、Ｋ・・・・・・警報阻止用補助継電器（コイル
）。ＦＩＧ、１ −　　　　　　　　ト　ト　　　　　　　　ｖ（７７ス
容１１ＡＶＮ、　　ΔＶＡ　　　　　　−Fig. 1 is a hydraulic operation circuit diagram with a conventional accumulator, Fig. 2 is a conventional gas leak detection circuit diagram, Fig. 3 is a gas capacity-gas pressure characteristic curve diagram of the accumulator, and Fig. 4 is a diagram according to the present invention. FIG. 2 is a circuit diagram showing an embodiment of an accumulator-filled gas leakage detection circuit. PSl... Pressure contact terminal, PS2... Pressure contact terminal, MS... Electromagnetic switch (coil), N...
...Auxiliary relay (coil), T...Time-limiting relay (coil), J...Auxiliary relay for alarm (coil), K...Auxiliary relay for alarm blocking (coil). FIG, 1-toto v (77 spaces 11AVN, ΔVA-

Claims

[Scope of utility model registration request]

(1) In an accumulator that has an oil chamber to which oil is pumped once by an oil pump that is controlled to maintain the pressure within the set upper and lower limits of the oil pressure, and a gas chamber that compensates for volume fluctuations in this oil chamber, a time-limit relay that is actuated by a first contact that operates at the lower limit set value of the hydraulic pressure and can set a time less than the time required to reach the upper limit set value of the oil pressure; and a second contact that operates at the upper limit set value of the oil pressure. , an alarm means for outputting an alarm when a second contact is operating when the set time of the time-limited relay is reached, and a second alarm when the set time of the time-limited relay is reached;
1. An accumulator-filled gas leak detection circuit comprising: an alarm blocking means for returning the time-limited relay when the contact point of the accumulator is not operating.

(2) Utility Model Registration Scope of Claim In the accumulator-filled gas leak detection circuit as set forth in claim 1, the alarm means connects in series the time contact of the time relay and the contact of the auxiliary relay that is excited and closed by the second contact. An accumulator-filled gas leak detection circuit comprising an auxiliary relay for alarm generation having an excitation circuit.

(3) Scope of Utility Model Registration In the accumulator-filled gas leak detection circuit described in claim 1, the alarm blocking means includes:
A series connection circuit between the time contact of the time relay and the contact of the auxiliary relay, which is energized by the second contact and opens, and a series connection circuit between the contact of the electromagnetic switch and the self-holding contact, which is energized and closed by the first contact. An accumulator-filled gas leak detection circuit comprising an alarm blocking auxiliary relay having an excitation circuit connected in parallel with the following.

(4) Scope of Utility Model Registration In the accumulator-filled gas leak detection circuit according to any one of claims 1 to 3, the time-limiting relay is a contact of an electromagnetic switch that is excited and closed by a first contact; An accumulator-filled gas leak detection circuit comprising an excitation circuit in which a contact opened by excitation of an alarm blocking auxiliary relay of an alarm blocking means is connected in series, and a contact of the electromagnetic switch and a self-holding contact are connected in parallel.