JPS58109768A - Lining ring - Google Patents
Lining ringInfo
- Publication number
- JPS58109768A JPS58109768A JP20769281A JP20769281A JPS58109768A JP S58109768 A JPS58109768 A JP S58109768A JP 20769281 A JP20769281 A JP 20769281A JP 20769281 A JP20769281 A JP 20769281A JP S58109768 A JPS58109768 A JP S58109768A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- piston
- lining
- abutment
- lining ring
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
- F16J9/061—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging using metallic coiled or blade springs
- F16J9/063—Strip or wire along the entire circumference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
- F16J9/061—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging using metallic coiled or blade springs
- F16J9/062—Coiled spring along the entire circumference
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は内張リングに関し、特にシリンダと該シリンダ
内で往復動するピストンと、ピストンのピストンリング
溝内に収容されてシリンダと摺動接触するピストンリン
グとを含む形式の往復動装置において、ピストンリング
と共にピスト/リング内に収容されてピストンリングに
拡張力を与える内張リングに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lining ring, and more particularly to a type of lining ring that includes a cylinder, a piston that reciprocates within the cylinder, and a piston ring that is accommodated in a piston ring groove of the piston and makes sliding contact with the cylinder. In a reciprocating device, the lining ring is housed in a piston/ring together with a piston ring and applies an expansion force to the piston ring.
例えば作業物質に気体を使用したカスサイクル冷凍装置
においては例えば1ooK以下の極低瀧の気体を有効に
シールする必要がある。この場合主シール材として作用
するピストンリングとしてPTFE等のプラスチック、
ガラス繊維、グラファイト、ブロンズ、などを混入した
材料が使用されるが、全周に亘って均等な押付力を得る
ことができず、洩れが生じ易かった。また、前記の材料
を用いる限りでは適当な押付力を全周に亘って得ること
が困難である。ピストンリングにばね性の脚を設けてピ
ストンリング溝の底に接触せしめることも内燃機関など
において行われているが、構造が複雑である。For example, in a cass cycle refrigeration system that uses gas as the working material, it is necessary to effectively seal gas at extremely low levels of, for example, 1 OOK or less. In this case, plastic such as PTFE is used as the piston ring that acts as the main sealing material.
Materials mixed with glass fiber, graphite, bronze, etc. are used, but it is not possible to obtain an even pressing force over the entire circumference, and leaks are likely to occur. Further, as long as the above-mentioned materials are used, it is difficult to obtain an appropriate pressing force over the entire circumference. Providing spring legs on the piston ring and bringing them into contact with the bottom of the piston ring groove has also been used in internal combustion engines, but the structure is complicated.
本発明はピストンリングと共にピストンリング溝内に挿
入されて、ピストンリングに円周方向にはy均等な半径
方向押圧力を付与し得る如くする内張リングの改良に関
し、安価で耐久性があり、広い温度範囲で作動する内張
リングを得ることを目的とする。The present invention relates to an improvement of a lining ring that is inserted into a piston ring groove together with a piston ring and can apply a radial pressing force that is uniform in the circumferential direction to the piston ring, and is inexpensive and durable. The objective is to obtain a lined ring that operates over a wide temperature range.
本発明によれば、円周方向1ケ所に合口部を有し、その
厚さすなわちピストンの半径方向寸法がはソ一定で、そ
の幅すなわちシリンダの軸方向寸法の実効値が合口部を
限定する両端部に向って小となる如くなされた内張リン
グが提供される。According to the present invention, there is an abutment at one location in the circumferential direction, the thickness of the abutment, that is, the radial dimension of the piston is constant, and the effective value of the width, that is, the axial dimension of the cylinder, limits the abutment. A lining ring is provided which tapers towards both ends.
幅を両端部に向って次第に小となる如くしてもよく、複
数の円周方向に間隔をおかれて且つ幅方向寸法の異るス
ロットを設けることによって幅の実効値が両端部に向っ
て段階的に減少するようにしてもよい。The width may be gradually reduced toward the ends, and by providing a plurality of circumferentially spaced slots with different width dimensions, the effective value of the width may be reduced toward the ends. It may be decreased in stages.
以下添付図面を参照して本発明をきらに説明する。The present invention will be described in detail below with reference to the accompanying drawings.
第1図は模式的に示す往復動装置の例を示しンリンダl
内で往復運動するピストン2は連結ロッド8を介して回
転クランク4に連結される。ピストン2のピストンリン
グ溝5にはピストンリング6と内張リング7とが挿入さ
れている。Figure 1 schematically shows an example of a reciprocating device.
A piston 2 reciprocating within is connected to a rotating crank 4 via a connecting rod 8. A piston ring 6 and an inner ring 7 are inserted into the piston ring groove 5 of the piston 2.
内張リングとして第2図に示す同心リング7′、すなわ
ちその内外径の差が円周上の各位置において一定□なリ
ングを使用すると均一な半径方向押圧力をピストンリン
グ6に与えることが困難である。If a concentric ring 7' shown in Fig. 2 is used as the inner ring, that is, a ring whose inner and outer diameters have a constant difference at each position on the circumference, it is difficult to apply a uniform radial pressing force to the piston ring 6. It is.
第8図は単純な偏心り/グを示し、内外径はそれぞれ異
なる半径を有し、内外径の中心が偏してリング厚さHが
変化するり/グである。均一な半径方向押圧力をピスト
ンリングに与えることは困難である。FIG. 8 shows a simple eccentric ring, in which the inner and outer diameters have different radii, and the center of the inner and outer diameters is offset and the ring thickness H changes. It is difficult to apply a uniform radial pressing force to the piston rings.
第4図はコイルエキスパンダを有するシールリングを示
しているが、ガスサイクル冷凍機の場合、使用温度範囲
が広いので、特に低温においてシール材の収縮により収
縮力がコイルばねの拡張力に打ち勝ってシリンダとの間
にすきまを生ずる傾向があり、コイルばねの拡張力を特
とする特に常温附近の温度ではシール抵抗が過大となり
シールの過度な摩耗を生ずることになる。Figure 4 shows a seal ring with a coil expander, but in the case of a gas cycle refrigerator, the operating temperature range is wide, so the contraction force due to the contraction of the sealing material overcomes the expansion force of the coil spring, especially at low temperatures. There is a tendency to create a gap between the seal and the cylinder, and the seal resistance becomes excessive, especially at temperatures around room temperature, where the expansion force of the coil spring is particularly strong, resulting in excessive wear of the seal.
本発明は上述欠点を克服することを目的としている。The present invention aims to overcome the above-mentioned drawbacks.
第5図の実線は理想的な半径方向押圧力分布を得るため
の偏心リングのリング幅Tと角度ψ(第3図参照)との
関係を示すグラフであり、式で表すと
こ5に E−弾性率kg/ #l渭2
D:偏心リングの直径mm
△D:偏心リングの直径と内径との差朋ψ:合ロ部より
測った角度
破線は第3図の単純な偏心リンクのT1ψ関係を示し、
異りが明らかである。The solid line in Figure 5 is a graph showing the relationship between the ring width T of the eccentric ring and the angle ψ (see Figure 3) to obtain an ideal radial pressing force distribution. Elastic modulus kg/#l渭2 D: Eccentric ring diameter mm △D: Difference between eccentric ring diameter and inner diameter ψ: Angle measured from the joint part The dashed line is the T1ψ relationship of the simple eccentric link in Figure 3 shows,
The difference is obvious.
理想的な偏心リングは〃ロエがきわめて困難である。It is extremely difficult to find an ideal eccentric ring.
第6図は本発明のリングの一実施例を展開図として示し
ており、リング厚さHk一定とし、リング幅Tを各角度
について第5図の曲線に模擬的に変化せしめることによ
り面圧を全円周にわたってはソ一定としたものである。FIG. 6 shows an embodiment of the ring of the present invention as a developed view. The ring thickness Hk is kept constant, and the ring width T is changed to the curve shown in FIG. 5 at each angle in order to reduce the surface pressure. It is assumed to be constant over the entire circumference.
望1しくばばね用ステンレス鋼、升板用帝@等の薄板、
例えば厚さ0.1〜0.3順のものを、打抜き及びプレ
ス成形−タンプリンク処理(所望の場合)−歪取り熱処
理−−−−・(しIし研摩−m−仕上処理の各工程を経
て内張リングを得る。Desirable stainless steel for springs, thin plates such as steel for square plates,
For example, each step of the thickness order of 0.1 to 0.3 is punched and press-formed - tamp link treatment (if desired) - strain relief heat treatment - polishing - m - finishing treatment. After that, you will get the lining ring.
この内張リングをピストンのリング溝に装着し、合口を
有するリング状のシール材を合口を約180゜ずらせて
装着する。シール材はその全周にわたってはソ均等な面
圧でシリンダ壁に押しうけられる。This lining ring is installed in the ring groove of the piston, and a ring-shaped sealing material having an abutment is installed with the abutment shifted by about 180 degrees. The sealing material is pressed against the cylinder wall with uniform surface pressure over its entire circumference.
内張リングとシール材との円周方向位置ずれを防止する
ためには例えば内張リングの最大幅部分にシール材の合
口部の一方を接着する。In order to prevent the lining ring and the sealing material from being misaligned in the circumferential direction, for example, one of the abutment portions of the sealing material is bonded to the widest part of the lining ring.
第7図は本発明の変形例を示し、第7図(α)は平面図
、第7図(b)は側面図、第7図(c)は展開図である
。切欠きIL 12.18等を設けることにより幅T
の実効値が合口部(展開図において両端部)に向って例
えば第7図(c)に破線として示した如く次第に減少し
てゆくものを示している。FIG. 7 shows a modification of the present invention, in which FIG. 7(α) is a plan view, FIG. 7(b) is a side view, and FIG. 7(c) is a developed view. Width T can be reduced by providing notches IL 12.18, etc.
This shows that the effective value gradually decreases toward the abutment portion (both ends in the developed view), as shown by the broken line in FIG. 7(c), for example.
作業物質として気体を使用する所謂ガスサイクル冷凍機
は通常、圧縮機、連結管、冷凍部から構成される。圧縮
機は所定の運転圧力差を維持するもので高圧気体は連結
管を経て冷凍部に供給され、冷凍部において膨張して低
圧となって低温となる。A so-called gas cycle refrigerator that uses gas as a working substance is usually composed of a compressor, a connecting pipe, and a refrigeration section. The compressor maintains a predetermined operating pressure difference, and high-pressure gas is supplied to the refrigeration section through a connecting pipe, where it expands and becomes low pressure and low temperature.
低圧の気体は連結管を経て圧縮機に戻る。冷凍部のシリ
ンダ内でピストン(ディスプレーサ)が往復動する。な
お通常はティスブレーサ内には蓄冷材、例えば微細な金
属球が充填されて蓄熱型熱交換器として作用する。ディ
スプレーサに設けたシールリングにガス洩れが存在する
と熱交換器を通るガス流量が減少し、所定の温度まで冷
凍を行うことができなくなる。The low pressure gas returns to the compressor via the connecting pipe. A piston (displacer) reciprocates within the cylinder of the refrigeration section. Note that normally, a regenerator material, for example, fine metal balls, is filled in the tire bracer and acts as a regenerator type heat exchanger. If there is a gas leak in the seal ring provided on the displacer, the flow rate of gas passing through the heat exchanger will decrease, making it impossible to perform refrigeration to a predetermined temperature.
望ましくは段つきの合口を有し断面が矩形又は正方形の
7−シリンダの半径方向内側に本発明による内張リング
をその合口がシールリングの合口と180°異なるよう
に装着(必要ならば一部を接着してもよい)して、内張
リングが円周に沿ってはソ均等な半径方向外力に向う押
付力をシールリングに与えるようにする。シールリング
は内張リングの拡張力と内張リングの半径方向内面に作
用するガス圧力とによりシリンダに押しつけられガス洩
れは防止される。A lining ring according to the present invention is mounted on the radially inner side of a 7-cylinder, preferably having a stepped abutment and having a rectangular or square cross section, so that the abutment differs by 180° from the abutment of the seal ring (if necessary, a part of the lining ring is installed). (may be glued) so that the lining ring exerts a pressing force on the sealing ring towards the radial external force which is uniform along the circumference. The seal ring is pressed against the cylinder by the expansion force of the lining ring and the gas pressure acting on the radially inner surface of the lining ring, thereby preventing gas leakage.
本発明による内張リングを使用したガスサイクル冷凍機
を運転した結果、広い温度範囲について(常温から1O
K)安定した運転を行い所望の冷凍を発生し、1万時間
の運転について性能の低下を認めなかった。すなわち本
発明によれば耐久性に富み、シール効果の良好な内張リ
ングが安価に得られ、産業上有効である。As a result of operating a gas cycle refrigerator using the lining ring according to the present invention, it was found that over a wide temperature range (from room temperature to 1
K) Stable operation was performed, desired refrigeration was generated, and no deterioration in performance was observed after 10,000 hours of operation. That is, according to the present invention, a lining ring that is highly durable and has a good sealing effect can be obtained at a low cost, and is industrially effective.
尚第8図は冷凍部の概略図を示し、21はシリンダ、2
2はディスプレーサ(ピストン)、26はシールリング
、27は内張リング、28.29は室を示す。In addition, FIG. 8 shows a schematic diagram of the refrigeration section, 21 is a cylinder, 2
2 is a displacer (piston), 26 is a seal ring, 27 is a lining ring, and 28 and 29 are chambers.
第1図はシリンダとピストンとを含む往復動装置の概略
図。第2図は内張リングの一例を示す平面図。第3図は
偏心リングの平面図および断面図。
第4図はコイルエキスパンダを有するシールリングの一
部を切除した斜視図。第5図は偏心リングの厚さと円周
角度位置との関係を示すグラフ。第6図は本発明による
内張リングの実施例を示す展開図とその側面図。第7図
(α)は本発明の別の実施例を示す上面図。第7図(b
)は第7図(a)の側面図。
第7図(c)は展開図。第8図はガスサイクル冷凍装置
の冷凍部の概略図。
■、21ニアリンダ 2.22:ピストン5.25:リ
ング溝 6.26:シーシリ/グア、7′、7“、17
.27:内張リング11.12.13:切欠き
(外2名)FIG. 1 is a schematic diagram of a reciprocating device including a cylinder and a piston. FIG. 2 is a plan view showing an example of the lining ring. FIG. 3 is a plan view and a sectional view of the eccentric ring. FIG. 4 is a partially cutaway perspective view of a seal ring having a coil expander. FIG. 5 is a graph showing the relationship between the thickness of the eccentric ring and the circumferential angular position. FIG. 6 is a developed view and a side view of an embodiment of the lining ring according to the present invention. FIG. 7(α) is a top view showing another embodiment of the present invention. Figure 7 (b
) is a side view of FIG. 7(a). Figure 7(c) is a developed view. FIG. 8 is a schematic diagram of the refrigeration section of the gas cycle refrigeration system. ■, 21 Near cylinder 2.22: Piston 5.25: Ring groove 6.26: Sea cylinder/Guar, 7', 7", 17
.. 27: Inner ring 11.12.13: Notch (2 people outside)
Claims (1)
ンとを含む往復動装置のピストンのピストンリング溝内
にピストンリングと共に挿入される内張リングにおいて
、円周方向1ケ所に合口部を有し、その厚さすなわちピ
ストンの半径方向寸法かはソ一定で、その幅すなわちシ
リンダの軸方向寸法の実効値が前記合口部を限定する両
端部に向って小となる如くなされていることを特徴とす
る内張リング。 (2)前記幅が前記両端部に向って次第に小となる如く
なされていることを特徴とする特許請求の範囲第1項記
載の内張リング。 (8)複数の円周方向に間隔をおき且つ幅方向寸法の異
なるスロットを設けることによって前記実効匝が両端部
に向って段階的に減少する如くしたことを特徴とする特
許請求の範囲第1項記載の内張リング。 (→ 前記往復動装置がガスサイクル冷凍装置の一部を
構成し、ピストンリングが合口部を有するリング状のソ
ール材であることを特徴とする特許請求の範囲第1項記
載の内張リング。 (5)前記ピストンリングが合口部を有し、内張リング
の一端部がピストンリングにその合口部から遠い位置に
おいて接着等によって取付けられていることを特徴とす
る特許請求の範囲第1項記載の内張リング。[Scope of Claims] (1) In a lining ring that is inserted together with a piston ring into a piston ring groove of a reciprocating device that includes a cylinder and a piston that reciprocates within the cylinder, at one location in the circumferential direction. The piston has an abutment, the thickness of which is constant, that is, the radial dimension of the piston, and the effective value of the width, that is, the axial dimension of the cylinder, decreases toward both ends defining the abutment. An inner ring that is characterized by (2) The lining ring according to claim 1, wherein the width becomes gradually smaller toward the both ends. (8) A plurality of slots are provided at intervals in the circumferential direction and have different dimensions in the width direction, so that the effective size decreases stepwise toward both ends. Inner ring as described in section. (→ The lining ring according to claim 1, wherein the reciprocating device constitutes a part of a gas cycle refrigeration device, and the piston ring is a ring-shaped sole material having an abutment. (5) The piston ring has an abutment, and one end of the lining ring is attached to the piston ring by adhesive or the like at a position far from the abutment. lining ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20769281A JPS58109768A (en) | 1981-12-22 | 1981-12-22 | Lining ring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20769281A JPS58109768A (en) | 1981-12-22 | 1981-12-22 | Lining ring |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58109768A true JPS58109768A (en) | 1983-06-30 |
JPS6218787B2 JPS6218787B2 (en) | 1987-04-24 |
Family
ID=16543988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20769281A Granted JPS58109768A (en) | 1981-12-22 | 1981-12-22 | Lining ring |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58109768A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1182383A2 (en) * | 2000-08-25 | 2002-02-27 | Federal-Mogul Burscheid GmbH | Compression piston ring |
-
1981
- 1981-12-22 JP JP20769281A patent/JPS58109768A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1182383A2 (en) * | 2000-08-25 | 2002-02-27 | Federal-Mogul Burscheid GmbH | Compression piston ring |
EP1182383A3 (en) * | 2000-08-25 | 2005-01-12 | Federal-Mogul Burscheid GmbH | Compression piston ring |
Also Published As
Publication number | Publication date |
---|---|
JPS6218787B2 (en) | 1987-04-24 |
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