JPS608509A - Hyraulic operating apparatus - Google Patents

Abstract

PURPOSE:To facilitate air deflating operation for a pipeline by providing the forward end portion of a dead-end pipe with a deflation check vale which can be connected o the air by operating in the air in a hydraulic operating apparatus having a dead-end pipeline. CONSTITUTION:With a hydraulic operating apparatus including a hydraulic cylinder 4 for operating a power breaker 1, pressurized oil in an accumulator 3 retaining discharged oil of a hydraulic pump 2 under high pressure is conducted through a solenoid valve 5 and a pipeline 10 to a hydraulic relay 6, thereby operating an incorporated valve. Thus, the pressurized oil is conducted through a pipeline 11 to the hydraulic cylinder 4 to be operated, thereby operating the breaker 1. In order to facilitate deflation after assembly work, check valves 16-18 are disposed at the end portions of respective pipelines. Each valve 16-18 comprises a spring 19 and a valve 20, and an open tool 22 is mounted on a check valve body 21 to open the valve 20 against the spring for conducting air deflation.

Description

【発明の詳細な説明】 この発明は例えば電力用しゃ断器等の操作に使用するた
めの油田操作装置の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an oil field operating device for use in operating, for example, a power circuit breaker.

一般にしゃ断器に使用される油圧操作装置は高速開閉動
作が要求される他、しゃ断器の動作時間のばらつきが数
ミリセカンド以内に入るように要求される。このためア
キュームレータに数百気圧の油圧エネルギを貯え、多数
の増幅弁を介して操作されるのが一般的である。一方、
多数の弁を介することにより数個所に閉塞さ・れた管路
をもつことになり、この部分に組立段階で介在した空気
の除去に時間を要し、実用的にも経済的にも問題が多い
。Hydraulic operating devices used in circuit breakers are generally required to open and close at high speed, and are also required to have variations in operating time of the circuit breaker within a few milliseconds. For this reason, it is common to store several hundred atmospheres of hydraulic energy in an accumulator and operate it via a large number of amplifying valves. on the other hand,
Due to the large number of valves, the pipes are blocked in several places, and it takes time to remove the air that is present in these parts during the assembly process, which poses problems both practically and economically. many.

この発明はこれらの点を改良するために動作信頼性の高
い油圧操作装置を提供しようとするものである。以下こ
の発明の一実施例を図について説明する。第［図におい
て、（１）はしゃ断器、（２）は油ポンプ−（３）はア
キュームレータ、（４）はしゃ断器］１）を操作する油
圧シリンダ、（５）は電磁弁、（６）は油圧リレー、（
７）は低圧タンク、（８）乃至Ｑ３は管路、ｏ４は投入
電磁弁、ａｏは引きはずし電磁弁である。The present invention aims to improve these points by providing a hydraulic operating device with high operational reliability. An embodiment of the present invention will be described below with reference to the drawings. [In the figure, (1) is the breaker, (2) is the oil pump, (3) is the accumulator, (4) is the breaker] 1) is the hydraulic cylinder that operates the breaker, (5) is the solenoid valve, (6) is a hydraulic relay, (
7) is a low pressure tank, (8) to Q3 are conduits, o4 is a closing solenoid valve, and ao is a tripping solenoid valve.

ここで、油ポンプ（２）で送り込まれた油は管路（８）
（９ンを通してアキュームレータ（３）と電磁弁（５）
１％　Ｋ　送り込まれ層圧に保持さね、る。さらに投入
電磁弁０彎の動作によりアキュームレータ１８）内の高
圧油は管路ａ０を経由して油圧リレー（６）に導かれ、
内蔵している弁を動作させ、管路Ｉを通って油圧シリン
ダ（４）に導かれる。このように数段の弁を介して管路
が形成されており、組立初期に介在した空気の除去が容
易ではない。そこで本発明では各管路の端部に逆止め弁
αｅＱη０＆を内蔵させ、空気抜き作業や真空引き及び
油の給油作業を容易ならしめようとするものである。Here, the oil sent by the oil pump (2) is transferred to the pipe (8).
(Accumulator (3) and solenoid valve (5)
1% K is fed and maintained at layer pressure. Furthermore, by the operation of the input solenoid valve 0, the high pressure oil in the accumulator 18) is guided to the hydraulic relay (6) via the pipe a0,
A built-in valve is operated, and the oil is guided through the pipe I to the hydraulic cylinder (4). In this way, a conduit is formed through several stages of valves, and it is not easy to remove air that is present during the initial stage of assembly. Therefore, in the present invention, a check valve αeQη0& is built into the end of each pipe line to facilitate air venting, evacuation, and oil replenishment.

これら逆止め弁明（１７）　Ｏ８は第２図に示すように
、ばねＱ傷と弁（イ）とからなっており、充圧状態でも
逆止弁体（財）に開放工具四を大気側から螺装すること
により弁を開放し、空気抜き作業ができ、完了後工具を
取り去れば速やかに弁は運転状態に復旧できる特徴を有
している。As shown in Figure 2, these check valves (17) O8 consist of a spring Q and a valve (A), and even in a pressurized state, the check valve element (I) must be touched with the opening tool 4 from the atmospheric side. By screwing on the valve, the valve can be opened and air removed, and once the tool is removed, the valve can be quickly restored to operating condition.

またこの逆止め弁を介して真空ポンプを直結し、組立後
油圧操作装置内を真空化することが可能であり、真空ポ
ンプを取り去っても油圧操作装置内の真空度がそのまま
維持でき、このような状態に油を供給することにより信
頼性の高い油圧操作装置を提供できる。In addition, by directly connecting a vacuum pump through this check valve, it is possible to evacuate the inside of the hydraulic operating device after assembly, and even if the vacuum pump is removed, the degree of vacuum inside the hydraulic operating device can be maintained. By supplying oil under such conditions, a highly reliable hydraulic operating device can be provided.

【図面の簡単な説明】[Brief explanation of the drawing]

第を図はこの発明の一実施例を示す配管図、第２図は逆
止め弁の拡大断面図である。 図中、（１）はしゃ断器、（２）は油圧ポンプ、（８）
はアキュームレータ、（４）は油圧シリンダ、（５）は
電磁弁、（６）は油圧リレー、（γ）は低圧タンク、（
８）乃至（至）は管路、ａ肴は投入電磁弁、Ｏ１９は引
きはずし′電磁弁、αＱ乃至（至）は逆止め弁、０１は
ばね、四多ま弁、Ｃυは逆止弁体、に）は開放工具であ
る。 代理人　大　岩　増　雄 ｙｌ　（／７．／ａ） ／／ 第２図Figure 1 is a piping diagram showing an embodiment of the present invention, and Figure 2 is an enlarged sectional view of the check valve. In the diagram, (1) is a breaker, (2) is a hydraulic pump, (8)
is an accumulator, (4) is a hydraulic cylinder, (5) is a solenoid valve, (6) is a hydraulic relay, (γ) is a low pressure tank, (
8) to (to) are the pipes, a is the input solenoid valve, O19 is the trip solenoid valve, αQ to (to) are the check valves, 01 is the spring, the four-way valve, and Cυ is the check valve body. , to) is an opening tool. Agent Masuo Oiwa (/7./a) // Figure 2

Claims (1)

【特許請求の範囲】[Claims] 行きどまり管路をもつ油圧操作装置において、行きどま
り管路の先端部に脱気用に大気中より掃作することによ
り大気と連通を可能にする逆止め弁を設けたことを特徴
とする油圧操作装置。A hydraulic operating device having a dead-end pipe, characterized in that a check valve is provided at the tip of the dead-end pipe to enable communication with the atmosphere by sweeping from the atmosphere for deaeration. Operating device.