JPS60143201A - Bellows accumulator - Google Patents

Bellows accumulator

Info

Publication number
JPS60143201A
JPS60143201A JP58249437A JP24943783A JPS60143201A JP S60143201 A JPS60143201 A JP S60143201A JP 58249437 A JP58249437 A JP 58249437A JP 24943783 A JP24943783 A JP 24943783A JP S60143201 A JPS60143201 A JP S60143201A
Authority
JP
Japan
Prior art keywords
gas
bellows
pressure
chamber
gas chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP58249437A
Other languages
Japanese (ja)
Other versions
JPH0249401B2 (en
Inventor
Toshiyuki Yamaguchi
山口　敏之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eagle Industry Co Ltd
Original Assignee
Eagle Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eagle Industry Co Ltd filed Critical Eagle Industry Co Ltd
Priority to JP58249437A priority Critical patent/JPH0249401B2/en
Publication of JPS60143201A publication Critical patent/JPS60143201A/en
Publication of JPH0249401B2 publication Critical patent/JPH0249401B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
    • F15B1/103—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means the separating means being bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/315—Accumulator separating means having flexible separating means
    • F15B2201/3153—Accumulator separating means having flexible separating means the flexible separating means being bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/415—Gas ports

Abstract

PURPOSE:To heighten compression ratio and to prevent breakage of a bellows by enclosing in a gas chamber gas and liquid for eliminating dead space for compression of gas in the gas chamber at the maximum expansion of a bellows in a two-phase state. CONSTITUTION:In a gas chamber 7, enclosed are gas (a) and liquid (b) for eliminating dead space for compression of gas (a) in the gas chamber 7 at the maximum expansion of a bellows 6 in a two-phase state. Therefore, even if sealed-in pressure is low, compression ratio can be increased within the range of 10-100, so that the chamber can be used at a stroke up to high-pressure area. Furthermore, even if leakage of gas is caused at a gas enclosing port 3 or fluid pressure more than expected is loaded to the sealed-in pressure, the bellows 6 can be compressed in such a manner as to be equal to pressure on line side A to prevent breakage of the bellows 6.

Description

【発明の詳細な説明】 本発明はベローズアキュムレータの改良に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in bellows accumulators.

従来から、第１図に示すように、ガス封入口（３）とラ
イン側（Ａ）に連なる連通孔（４）を付されたシェル（
１）の内部に、一端を前記シェル（１）の連通孔（４）
側の端壁（２）に固着されるとともに他端に端蓋（５）
を固着された伸縮自在なベローズ（６）を内装してなる
ベローズアキュムレータが知られている。このアキ二ム
レータのシェル（１）内部は、前記ベローズ（６）と端
蓋（５）によりガスを封入するガス室（７）とライン側
から前記連通孔（４）を通って圧力流体が出入りする流
体室（８）とに仕切られ、前記ベローズ（６）の伸縮に
伴なう画室（７）（８）の容積の増減とその圧力の均衡
により圧力の調整を行なうものであるが、前記ガス室（
７）に単にガスのみを封入する構造であるため、っぎの
ような問題点を有している。Conventionally, as shown in Fig. 1, a shell (
1), one end of which is connected to the communicating hole (4) of the shell (1).
It is fixed to the side end wall (2) and has an end cap (5) on the other end.
A bellows accumulator is known which includes a retractable bellows (6) fixed therein. Inside the shell (1) of this Achinimulator, pressure fluid enters and exits through the gas chamber (7), which is sealed with gas by the bellows (6) and end cap (5), and the communication hole (4) from the line side. The fluid chamber (8) is partitioned into a fluid chamber (8), and the pressure is adjusted by increasing and decreasing the volume of the compartments (7) and (8) as the bellows (6) expands and contracts, and by balancing the pressure. gas chamber (
7) has a structure in which only gas is sealed, so it has the following problems.

■流体室（８）に圧力流体が流入してぺ四−ズ（６）が
伸びきった状態において、さらにライン側（Ａ）から圧
力が加わってもガス室（７）内のガスの圧縮に対するデ
ッドスペースがそのまま残り、ガス室（７）に封入され
たガスがそれ以上圧縮されないため、ベローズ（６）に
差圧力が加わり、該ベローズ（６）が破損してしまう。■When pressurized fluid flows into the fluid chamber (8) and the pipes (6) are fully extended, even if pressure is applied from the line side (A), the gas in the gas chamber (7) will not be compressed. Since the dead space remains and the gas sealed in the gas chamber (7) is not compressed any further, a differential pressure is applied to the bellows (6), resulting in damage to the bellows (6).

■上記構成のアキームレータによると、ガス室（７）全
容積とガス圧縮時のデッドスペースとの圧縮比が２〜２
．５の範囲に限られているため、封入圧に対しての使用
可能範囲が狭い範囲に限定されてしま−う。■According to the Akeemulator with the above configuration, the compression ratio between the total volume of the gas chamber (7) and the dead space during gas compression is 2 to 2.
．． 5, the usable range for the sealing pressure is limited to a narrow range.

本発明のベローズアキュムレータは以上の従来技術の問
題点に鑑み、前記ガス室内に、従来から用いられている
ガスとともに、前記ベローズの最大伸張時におけるガス
室の前記ガスの圧縮に対するデッドスペースをなくす液
体を封入してなり、前記圧縮比を高め、かつベローズの
破損を防止するように構成したものである。In view of the above-mentioned problems of the prior art, the bellows accumulator of the present invention has a liquid in the gas chamber that eliminates the dead space for the compression of the gas in the gas chamber when the bellows is at its maximum extension, along with the conventionally used gas. The bellows is sealed to increase the compression ratio and prevent damage to the bellows.

以下、本発明の一実施例を図面にしたがって説明すると
、第２図に示す本実施例のベローズアキュムレータにお
けるガス室（７）には、ガス（ａ）と、ベローズ（６）
の最大伸張時（第３図参照）におけるガス室（７）のガ
ス（ａ）の圧縮に対するデッドスペースに等しい容量以
上の液体（ｂ）が封入されている。その他の構成は上記
従来例と同様であるため、第１図に付した符号と同一の
符号を付してその説明を省略する。An embodiment of the present invention will be described below with reference to the drawings. In the bellows accumulator of this embodiment shown in FIG. 2, a gas chamber (7) contains a gas (a) and a bellows (6).
The liquid (b) is filled in a volume equal to or more than the dead space for the compression of the gas (a) in the gas chamber (7) at the time of maximum expansion (see FIG. 3). The rest of the structure is the same as that of the conventional example, so the same reference numerals as those shown in FIG. 1 are given, and the explanation thereof will be omitted.

上記構成になるベローズアキュムレータによれば、封入
圧が低くても、上記圧ｉ比を１０〜１００の範囲まで引
き上げることができるため、高圧域にいたるまでの一挙
使用が可能となる。また併せてガス封入口（３）がガス
（ａ）漏れがあった場合や封入圧に対して予想以上の流
体圧が負荷された場合でも、ライン側（Ａ）の圧力と均
圧するまで圧縮可能なためベローズ（６）の破損を未然
に防止することが、できる。According to the bellows accumulator having the above structure, even if the sealing pressure is low, the pressure i ratio can be raised to a range of 10 to 100, so that it can be used up to a high pressure range at once. In addition, even if there is a gas (a) leak at the gas filling port (3) or a fluid pressure higher than expected is applied to the filling pressure, it can be compressed until the pressure equalizes with the pressure on the line side (A). Therefore, damage to the bellows (6) can be prevented.

本発明のベローズアキュムレータは以上説明したように
、ガス室内にガスと上記所要量以上の液体な二相状態で
封入してなり、これにより従来技術に残されていた問題
点を一挙に解消したものである。As explained above, the bellows accumulator of the present invention has a two-phase gas sealed in the gas chamber and a liquid in an amount exceeding the above-mentioned required amount, thereby solving the problems remaining in the conventional technology at once. It is.

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

第１図は従来のベローズアキュムレータの一例を示す断
面図、第２図と第３図は本発明の一実施例に係るペロー
ズアキームレータを示す断面図である。 （１）シェル　（２）端壁　（３）ガス封入口（４）連
通孔　（５）端蓋　（６′）ベローズ（７）ガス室　（
８）流体室　（ａ）ガス（ｂ）液体　（Ａ）ライン側FIG. 1 is a sectional view showing an example of a conventional bellows accumulator, and FIGS. 2 and 3 are sectional views showing a bellows accumulator according to an embodiment of the present invention. (1) Shell (2) End wall (3) Gas filling port (4) Communication hole (5) End cover (6') Bellows (7) Gas chamber (
8) Fluid chamber (a) Gas (b) Liquid (A) Line side

Claims (1)

【特許請求の範囲】[Claims] シェルの内部に、一端を前記シェルの一方の端壁に固着
されるとともに他端に端蓋を固着された伸縮自在のベロ
ーズを内装し、前記シェル内の空間を、前記ベローズと
端蓋により７、外側のガス室とライン側に連通する内側
の流体室に仕切ってなるベローズアキュムレータにおい
て、前記ガス室内ニ、ガスと、前記ベローズの最大伸張
時にお・けるガス室の前記ガスの圧縮に対するデッドス
ペースをなくす液体を二相状態に封入してなることを特
徴とするベローズアキュムレータ。A retractable bellows having one end fixed to one end wall of the shell and an end cover fixed to the other end is installed inside the shell, and the space inside the shell is divided into 7 by the bellows and the end cover. In a bellows accumulator partitioned into an outer gas chamber and an inner fluid chamber communicating with the line side, there is a dead space for the gas in the gas chamber and for compression of the gas in the gas chamber when the bellows is at its maximum extension. A bellows accumulator characterized by containing a two-phase liquid that eliminates the
JP58249437A 1983-12-29 1983-12-29 BEROOZUAKYUMUREETA Expired - Lifetime JPH0249401B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58249437A JPH0249401B2 (en) 1983-12-29 1983-12-29 BEROOZUAKYUMUREETA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58249437A JPH0249401B2 (en) 1983-12-29 1983-12-29 BEROOZUAKYUMUREETA

Publications (2)

Publication Number Publication Date
JPS60143201A true JPS60143201A (en) 1985-07-29
JPH0249401B2 JPH0249401B2 (en) 1990-10-30

Family

ID=17192952

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58249437A Expired - Lifetime JPH0249401B2 (en) 1983-12-29 1983-12-29 BEROOZUAKYUMUREETA

Country Status (1)

Country Link
JP (1) JPH0249401B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0335394U (en) * 1989-08-15 1991-04-05
JP2007519869A (en) * 2004-01-29 2007-07-19 ハイダック　テクノロジー　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング Accumulator, especially pulsation damping device
WO2010066321A1 (en) * 2008-12-09 2010-06-17 Hydac Technology Gmbh Hydraulic accumulator, in particular bellows accumulator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0335394U (en) * 1989-08-15 1991-04-05
JP2007519869A (en) * 2004-01-29 2007-07-19 ハイダック　テクノロジー　ゲゼルシャフト　ミット　ベシュレンクテル　ハフツング Accumulator, especially pulsation damping device
US7857006B2 (en) 2004-01-29 2010-12-28 Hydac Technology Gmbh Pressure accumulator, especially pulsation damper
WO2010066321A1 (en) * 2008-12-09 2010-06-17 Hydac Technology Gmbh Hydraulic accumulator, in particular bellows accumulator
US8875740B2 (en) 2008-12-09 2014-11-04 Hydac Technology Gmbh Hydraulic accumulator, in particular bellows accumulator

Also Published As

Publication number Publication date
JPH0249401B2 (en) 1990-10-30

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