JP2000257991A - Accumulator - Google Patents
AccumulatorInfo
- Publication number
- JP2000257991A JP2000257991A JP11056565A JP5656599A JP2000257991A JP 2000257991 A JP2000257991 A JP 2000257991A JP 11056565 A JP11056565 A JP 11056565A JP 5656599 A JP5656599 A JP 5656599A JP 2000257991 A JP2000257991 A JP 2000257991A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- accumulator
- cylindrical
- moving body
- projection
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、液体の体積変化を
吸収するアキュムレータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulator for absorbing a change in volume of a liquid.
【０００２】[0002]
【従来の技術】液体を循環させるループ配管には液体の
膨張収縮を吸収するためアキュムレータが設けられてい
る。図３はループ配管の一例を示す。冷媒ループ配管３
０には冷媒を循環させるポンプ３１と、冷媒を冷却する
熱交換器３２と、冷媒により冷却される負荷３３が接続
され、冷媒の体積膨張を吸収するアキュムレータ３４が
設けられている。2. Description of the Related Art An accumulator is provided in a loop pipe for circulating a liquid to absorb expansion and contraction of the liquid. FIG. 3 shows an example of a loop pipe. Refrigerant loop piping 3
0 is connected to a pump 31 for circulating the refrigerant, a heat exchanger 32 for cooling the refrigerant, and a load 33 cooled by the refrigerant, and is provided with an accumulator 34 for absorbing the volume expansion of the refrigerant.
【０００３】図４はアキュムレータの構成を示す。中空
の円筒体１の一端には第１端材２が設けられ、他端には
第２端材３が取り付けられている。円筒体１の内面と摺
動可能に嵌合して移動体４が設けられている。この移動
体４の第１端材２側には円筒状の突起５が設けられてい
る。一端を第１端材２に固定され他端を移動体４に固定
され内径が円筒状突起５の外径より大きい円筒状のベロ
ーズ６が設けられている。第１端材２、移動体４が有す
る円筒状突起５、ベローズ６で囲まれる空間が液体室７
を構成し、円筒体１、第２端材３、移動体４が有する円
筒状突起５、ベローズ６で囲まれる空間が気体室８を構
成する。第１端材２には開口９が設けられ、液体が出入
りし、気体室８には封入口１０が設けられ加圧気体が供
給された後、密封される。FIG. 4 shows the structure of an accumulator. A first end member 2 is provided at one end of the hollow cylindrical body 1, and a second end member 3 is attached to the other end. The moving body 4 is provided so as to be slidably fitted to the inner surface of the cylindrical body 1. A cylindrical projection 5 is provided on the first end member 2 side of the moving body 4. A cylindrical bellows 6 having one end fixed to the first end member 2 and the other end fixed to the moving body 4 and having an inner diameter larger than the outer diameter of the cylindrical projection 5 is provided. The space surrounded by the first scrap 2, the cylindrical projection 5 of the moving body 4, and the bellows 6 is a liquid chamber 7.
The space surrounded by the cylindrical body 1, the second end piece 3, the cylindrical projection 5 of the moving body 4, and the bellows 6 forms the gas chamber 8. The first end piece 2 is provided with an opening 9 to allow liquid to enter and exit, and the gas chamber 8 is provided with a sealing port 10 to be supplied with pressurized gas and then sealed.
【０００４】[0004]
【発明が解決しようとする課題】このようなアキュムレ
ータを有するループ配管はロケットで宇宙基地に打ち上
げられる装置に装備されており、打ち上げ時激しい振動
が発生する。振動はアキュムレータの軸方向（円筒体１
の軸方向）と直角方向にも生じ、液体室７の液体がこの
方向に振動し、ベローズ６の付け根部に大きな応力が発
生し、ここで疲労破損が発生する場合があった。このた
め従来は図５に示すように円筒状突起５を第１端材２に
押しつけ、液体室７の液体を少なくした状態で打ち上げ
を行っていた。しかしこのようにすると打ち上げ時はア
キュムレータとして機能できなくなるという問題があっ
た。A loop pipe having such an accumulator is mounted on a device which is launched by a rocket to a space base, and violent vibration occurs at launch. The vibration is in the axial direction of the accumulator (cylindrical body 1
(The axial direction of the bellows), the liquid in the liquid chamber 7 vibrates in this direction, and a large stress is generated at the base of the bellows 6, which may cause fatigue failure. For this reason, conventionally, as shown in FIG. 5, the cylindrical projection 5 was pressed against the first end member 2 and the launch was performed in a state where the liquid in the liquid chamber 7 was reduced. However, in this case, there is a problem in that it cannot function as an accumulator during launch.
【０００５】本発明は、上述の問題点に鑑みてなされた
もので、振動時も動作できるアキュムレータを提供する
ことを目的とする。[0005] The present invention has been made in view of the above problems, and has as its object to provide an accumulator that can operate even during vibration.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明では、一方の端面を第１端材で塞
ぎ、他方の端面を第２端材で塞いだ中空円筒体と、この
円筒体内面を摺動し第１端材側に円筒状突起を有する移
動体と、前記第１端材に一端が接合し前記移動体に他端
が接合し前記円筒状突起の外側に取り付けられた円筒状
ベローズとを備えたアキュムレータにおいて、一端を前
記第１端材に取り付け、外径が前記ベローズの内径より
小さく、内径が前記円筒状突起の外径より大きい中空の
ベローズ保護円筒を設ける。According to a first aspect of the present invention, there is provided a hollow cylindrical body having one end face closed by a first end piece and the other end face closed by a second end piece. A movable body that slides on the inner surface of the cylinder and has a cylindrical projection on the first end member side; and one end is joined to the first end member, the other end is joined to the movable body, and attached to the outside of the cylindrical projection. An accumulator provided with a cylindrical bellows provided, one end of which is attached to the first end member, and a hollow bellows protection cylinder having an outer diameter smaller than the inner diameter of the bellows and an inner diameter larger than the outer diameter of the cylindrical projection. .
【０００７】かかるベローズ保護円筒を設けることによ
り、円筒軸方向に直角方向の振動に対し、アキュムレー
タ内のかなりの部分の液体をベローズ保護円筒内に閉じ
込めることができるので、ベローズに加わる振動力を大
幅に少なくし、ベローズ付け根に発生する応力も少なく
することができる。By providing such a bellows protection cylinder, a considerable part of the liquid in the accumulator can be confined in the bellows protection cylinder against vibrations perpendicular to the cylinder axis direction, so that the vibration force applied to the bellows is greatly reduced. And the stress generated at the root of the bellows can be reduced.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施形態を図面を
参照して説明する。図１は実施形態のアキュムレータの
構成を示す。図２は液体室の体積を最も小さくした状態
を示す。なお、図４と同じ符号は同じものを示す。中空
の円筒体１の一端には第１端材２が設けられ、他端には
第２端材３が取り付けられている。これらの第１端材
２、第２端材３は円筒体１に対し、装着後、溶接等によ
り固着するように構成されている。円筒体１の内面と摺
動可能に嵌合して移動体４が設けられている。移動体４
は円筒状で外周にはテフロンなどの滑り材４ａが設けら
れ、円筒体１の内面を摺動する。この摺動により液体室
７と気体室８の体積が変化する。この移動体４の第１端
材２側には円筒状の突起５が設けられている。この移動
体４と突起５の体積は後述する気体室８の体積に含まれ
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of the accumulator of the embodiment. FIG. 2 shows a state where the volume of the liquid chamber is minimized. The same reference numerals as those in FIG. 4 indicate the same components. A first end member 2 is provided at one end of the hollow cylindrical body 1, and a second end member 3 is attached to the other end. The first end member 2 and the second end member 3 are configured to be fixed to the cylindrical body 1 by welding or the like after being mounted. The moving body 4 is provided so as to be slidably fitted to the inner surface of the cylindrical body 1. Moving object 4
Has a sliding member 4a such as Teflon provided on the outer periphery thereof, and slides on the inner surface of the cylindrical body 1. Due to this sliding, the volumes of the liquid chamber 7 and the gas chamber 8 change. A cylindrical projection 5 is provided on the first end member 2 side of the moving body 4. The volumes of the moving body 4 and the projections 5 are included in the volume of the gas chamber 8 described later.
【０００９】一端を第１端材２に固定され他端を移動体
４に固定され、内径が円筒状突起５の外径より大きい円
筒状のベローズ６が設けられている。第１端材２、移動
体４が有する円筒状突起５、ベローズ６で囲まれる空間
が液体室７を構成し、円筒体１、第２端材３、移動体４
が有する円筒状突起５、ベローズ６で囲まれる空間が気
体室８を構成する。第１端材２には開口９が設けられ、
液体が出入りし、気体室８には封入口１０が設けられ加
圧気体が供給された後、密封される。A cylindrical bellows 6 having one end fixed to the first end member 2 and the other end fixed to the moving body 4 and having an inner diameter larger than the outer diameter of the cylindrical projection 5 is provided. A space surrounded by the first end piece 2, the cylindrical projection 5 of the moving body 4, and the bellows 6 constitutes a liquid chamber 7, and includes the cylindrical body 1, the second end piece 3, and the moving body 4.
The space surrounded by the cylindrical projections 5 and the bellows 6 of the above constitutes the gas chamber 8. An opening 9 is provided in the first scrap 2,
After the liquid enters and exits, the gas chamber 8 is provided with a sealing port 10 and is supplied with pressurized gas and then sealed.
【００１０】以上の構成は図４に示した従来の構造部分
である。本発明では、第１端材２の内面側にベローズ保
護円筒１１を設けている。ベローズ保護円筒１１は外径
がベローズ６の内径よりやや小さく、内径が移動体４の
円筒状突起５の円筒の外径よりも大きな円筒である。ま
た高さは円筒状突起５の高さとほぼ同じで、図２に示す
ように円筒状突起５を第１端材２に押し当てたとき、先
端が円筒状突起５の付け根と多少の間隙を生ずる程度の
寸法とする。The above structure is the conventional structure shown in FIG. In the present invention, the bellows protection cylinder 11 is provided on the inner side of the first end member 2. The bellows protection cylinder 11 is a cylinder whose outer diameter is slightly smaller than the inner diameter of the bellows 6 and whose inner diameter is larger than the outer diameter of the cylinder of the cylindrical projection 5 of the moving body 4. The height is almost the same as the height of the cylindrical projection 5, and when the cylindrical projection 5 is pressed against the first end member 2 as shown in FIG. The dimensions should be such that they would occur.
【００１１】次に振動時の動作について説明する。円筒
軸方向と直角方向に振動が加わる場合、図１に示すよう
に液体室７内のかなりの部分の液体はベローズ保護円筒
１１内で振動するため、ベローズ６に液体から加わる振
動力は少なく、ベローズ付け根に発生する応力も少なく
なる。なお、円筒軸方向の振動に対しては、ベローズ６
の全体が均等に伸縮するので、付け根部に大きな応力は
発生しない。Next, the operation during vibration will be described. When vibration is applied in a direction perpendicular to the cylinder axis direction, a considerable part of the liquid in the liquid chamber 7 vibrates in the bellows protection cylinder 11 as shown in FIG. The stress generated at the bellows root is also reduced. In addition, bellows 6
Does not expand or contract evenly, so that no large stress is generated at the base.
【００１２】[0012]
【発明の効果】以上の説明より明らかなように、本発明
は、アキュムレータの中にベローズ保護円筒を設けるこ
とにより、ベローズにとって最も厳しい方向からの振動
に対してもベローズに発生する応力を少なくし、ベロー
ズを保護し、振動中もアキュムレータの機能を発揮させ
ることができる。またベローズに発生する応力を少なく
することにより寿命を長くすることができる。As is apparent from the above description, the present invention reduces the stress generated in the bellows by providing the bellows protection cylinder in the accumulator even when the bellows vibrates from the most severe direction. In addition, the bellows can be protected and the function of the accumulator can be exhibited even during vibration. The life can be extended by reducing the stress generated in the bellows.
【図１】本発明のアキュムレータの構成を示す図であ
る。FIG. 1 is a diagram showing a configuration of an accumulator of the present invention.
【図２】本発明のアキュムレータの液体室の体積を最も
小さくした状態を示す。FIG. 2 shows a state where the volume of the liquid chamber of the accumulator of the present invention is minimized.
【図３】アキュムレータを備えたループ配管の一例を示
す。FIG. 3 shows an example of a loop pipe provided with an accumulator.
【図４】従来のアキュムレータの構成を示す図である。FIG. 4 is a diagram showing a configuration of a conventional accumulator.
【図５】従来のアキュムレータの液体室の体積を最も小
さくした状態を示す。FIG. 5 shows a state where the volume of the liquid chamber of the conventional accumulator is minimized.
１ 円筒体 ２ 第１端材 ３ 第２端材 ４ 移動体 ４ａ 滑り材 ５ 円筒状突起 ６ ベローズ ７ 液体室 ８ 気体室 ９ 開口 １0 封入口 １１ ベローズ保護円筒 DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 1st end material 3 2nd end material 4 Moving body 4a Sliding material 5 Cylindrical protrusion 6 Bellows 7 Liquid chamber 8 Gas chamber 9 Opening 10 Enclosure port 11 Bellows protection cylinder
Claims (1)
面を第２端材で塞いだ中空円筒体と、この円筒体内面を
摺動し第１端材側に円筒状突起を有する移動体と、前記
第１端材に一端が接合し前記移動体に他端が接合し前記
円筒状突起の外側に取り付けられた円筒状ベローズとを
備えたアキュムレータにおいて、一端を前記第１端材に
取り付け、外径が前記ベローズの内径より小さく、内径
が前記円筒状突起の外径より大きい中空のベローズ保護
円筒を設けたことを特徴とするアキュムレータ。1. A hollow cylindrical body having one end face closed with a first end piece and the other end face closed with a second end piece, and a cylindrical projection on the first end piece side by sliding on the inner surface of the cylinder. An accumulator comprising: a moving body having a cylindrical bellows having one end joined to the first end member, the other end joined to the moving body, and attached to the outside of the cylindrical projection. An accumulator, wherein the accumulator is provided with a hollow bellows protection cylinder having an outer diameter smaller than the inner diameter of the bellows and an inner diameter larger than the outer diameter of the cylindrical projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05656599A JP4172668B2 (en) | 1999-03-04 | 1999-03-04 | accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05656599A JP4172668B2 (en) | 1999-03-04 | 1999-03-04 | accumulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000257991A true JP2000257991A (en) | 2000-09-22 |
| JP4172668B2 JP4172668B2 (en) | 2008-10-29 |
Family
ID=13030666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05656599A Expired - Fee Related JP4172668B2 (en) | 1999-03-04 | 1999-03-04 | accumulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4172668B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016194609A1 (en) * | 2015-05-29 | 2016-12-08 | イーグル工業株式会社 | Metal bellows-type accumulator |
-
1999
- 1999-03-04 JP JP05656599A patent/JP4172668B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016194609A1 (en) * | 2015-05-29 | 2016-12-08 | イーグル工業株式会社 | Metal bellows-type accumulator |
| US10473123B2 (en) | 2015-05-29 | 2019-11-12 | Eagle Industry Co., Ltd. | Metal bellows type accumulator |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4172668B2 (en) | 2008-10-29 |
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