JPS63171702U

JPS63171702U -

Info

Publication number: JPS63171702U
Application number: JP6401787U
Authority: JP
Priority date: 1987-04-30
Filing date: 1987-04-30
Publication date: 1988-11-08

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の側断面図、第２
図は第１図のものの動作を説明するための一部拡
大側断面図、第３図は従来の開閉器用油圧操作装
置の回路図、第４図は従来の圧力降下用手動弁の
側断面図、第５図は第４図のものの動作を説明す
るための一部拡大側断面図である。３０ｃ…シール座、３１…ボール、４０…ガイ
ドリング、４０ａ…円錐形状の内面、４２…圧力
降下用手動弁。なお、各図中、同一符号は同一又
は相当部分を示す。 Figure 1 is a side sectional view of one embodiment of this invention;
The figure is a partially enlarged side sectional view to explain the operation of the one in Figure 1, Figure 3 is a circuit diagram of a conventional hydraulic operating device for a switch, and Figure 4 is a side sectional view of a conventional manual valve for pressure reduction. , FIG. 5 is a partially enlarged side sectional view for explaining the operation of the device shown in FIG. 4. 30c... Seal seat, 31... Ball, 40... Guide ring, 40a... Conical inner surface, 42... Manual valve for pressure reduction. In each figure, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of Claim for Utility Model Registration] (1) A manual valve for pressure reduction in a pressure accumulator circuit for reducing the pressure of high-pressure liquid stored in a pressure accumulator, which comprises a circular seal seat with a substantially right-angled cross section, and a valve body. A pressure accumulator comprising: a valve portion consisting of a hollow ball; and a guide ring that is provided surrounding the seal seat, has an inner diameter slightly larger than the inner diameter of the seal seat, and has a conical inner surface. Manual valve for pressure reduction in the circuit. (2) A manual valve for reducing pressure in a pressure accumulator circuit as set forth in claim 1 of the utility model registration claim, which is provided with a guide ring integrally formed with a seal seat. (3) A manual valve for pressure reduction in a pressure accumulator circuit as set forth in claim 1 of the utility model registration claim, which is equipped with a guide ring made of either synthetic resin or brass.