JPS62206259A - Rod seal for stirling engine - Google Patents

Rod seal for stirling engine

Info

Publication number
JPS62206259A
JPS62206259A JP4629986A JP4629986A JPS62206259A JP S62206259 A JPS62206259 A JP S62206259A JP 4629986 A JP4629986 A JP 4629986A JP 4629986 A JP4629986 A JP 4629986A JP S62206259 A JPS62206259 A JP S62206259A
Authority
JP
Japan
Prior art keywords
ring
seal
rod
chamber
stirling engine
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
JP4629986A
Other languages
Japanese (ja)
Other versions
JPH0681929B2 (en
Inventor
Daisaku Kobayashi
大作 小林
Tsunesaku Itabane
板羽　常作
Koichiro Kasahara
笠原　浩一郎
Yutaka Momose
豊 百瀬
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.)
Riken Corp
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
Riken Corp
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 Aisin Seiki Co Ltd, Riken Corp filed Critical Aisin Seiki Co Ltd
Priority to JP4629986A priority Critical patent/JPH0681929B2/en
Publication of JPS62206259A publication Critical patent/JPS62206259A/en
Publication of JPH0681929B2 publication Critical patent/JPH0681929B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
    • F02G1/053—Component parts or details
    • F02G1/0535—Seals or sealing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2243/00—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)

Abstract

PURPOSE:To improve a sealing property and durability by providing a seal in which an elastic ring having flexibility and a resin ring having rigidity are combined, on the lower part of a rod seal using for an oil sealing chamber of a Stirling engine. CONSTITUTION:An oil scraper 6, an oil sealing chamber 7, and a seal ring 11 are provided in order from an operating gas chamber 3 side, on a rod 4 connecting an operating piston 2 to a crank 9. The oil sealing chamber 7 is connected to the operating gas chamber 3 via a check valve 10, and the lowest pressure of the operating gas is always introduced into the oil sealing chamber, and the gas is again discharged into the gas chamber 3 via the oil scraper 6. The seal ring 11 is of a resin ring having rigidity, and an elastic ring 8; having an inclined surface 15 is provided on its outer periphery. Thereby, the closely contacting property of the seal ring can be increased while also improving durability.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、スターリング機関のロッドシール、詳しくは
シリンダ内の作動ピストンの動きを、たとえば、クラン
ク機構の如き駆動部に、両者に結合されたロッドを介し
て伝達させるスターリング機関のロッドまわりの作動ガ
スの漏洩を防止するロッドシールに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rod seal of a Stirling engine, in particular a movement of a working piston in a cylinder, to a drive part such as a crank mechanism, which is connected to both. This invention relates to a rod seal that prevents leakage of working gas around the rod of a Stirling engine that is transmitted via the rod.

（従来の技術） スターリング機関のロッドまわりのシールを効果的に成
し、シリンダ内を往復動するピストンによって区画され
る作動空間内の作動ガス（たとえば、ヘリウムガス）の
ロッドまわりからの洩れを防止させるシール装置として
は例えば第５図に示すようなものが公知である。第５図
において、スターリング機関のシリンダｌ内に作動ピス
トン２を配し、低温部となる圧縮室（作動空間）３を作
るが、この圧縮室３は図示しないが、隣り合うシリング
の高温部となる膨張室と、クーラ、蓄熱器およびヒータ
を介して連結され、作動ガスを、圧縮室３と膨張室との
間を往復させる間に、等温圧縮、等容変化、等温膨張お
よび等容変化をさせ、作動ピストン２を往復動させる。(Prior art) Effectively forms a seal around the rod of a Stirling engine, preventing leakage of working gas (for example, helium gas) from around the rod in the working space defined by the piston reciprocating within the cylinder. As a sealing device for this purpose, for example, one shown in FIG. 5 is known. In Fig. 5, an operating piston 2 is placed inside a cylinder l of a Stirling engine to create a compression chamber (operating space) 3 which serves as a low-temperature section. Although not shown, this compression chamber 3 is connected to a high-temperature section of an adjacent cylinder. It is connected to the expansion chamber 3 via a cooler, a heat storage device, and a heater, and while the working gas is reciprocated between the compression chamber 3 and the expansion chamber, isothermal compression, isovolume change, isothermal expansion, and isovolume change are performed. to cause the operating piston 2 to reciprocate.

この作動ピストン２の往復動は、ロッド４を介して、駆
動部９により外部に機械的仕事として取り出される。This reciprocating motion of the actuating piston 2 is extracted as mechanical work to the outside by the drive unit 9 via the rod 4.

圧縮室３からロッド４に沿って作動ガスが洩れ、平均作
動ガス圧の低下による出力低下を防１卜するために、圧
縮室３から駆動部９側へと、順次、オイルスクレーパ６
、油封室７、オイルシールリング８を配したシール装置
を、シリンダｌのロッド側端部に隣接配置しである。シ
リンダ１のロッド側端部にはガスリング５が配置され、
該ガスリング５を通って洩れた作動ガスは管路により逆
止め弁１０を経て作動室３に還流される。油封室７は、
逆止め弁１０を介して圧縮室３に連結される。油封室７
は作動ガスの最低サイクル圧に相当する圧に保ち、オイ
ルスクレーパ６を介して油封室７に入った作動ガスを圧
縮室３に戻す。In order to prevent the working gas from leaking from the compression chamber 3 along the rod 4 and reducing the output due to a decrease in the average working gas pressure, an oil scraper 6 is installed sequentially from the compression chamber 3 to the drive unit 9 side.
A sealing device including an oil seal chamber 7 and an oil seal ring 8 is arranged adjacent to the rod side end of the cylinder l. A gas ring 5 is arranged at the rod side end of the cylinder 1,
The working gas leaked through the gas ring 5 is returned to the working chamber 3 via a check valve 10 via a conduit. The oil seal chamber 7 is
It is connected to the compression chamber 3 via a check valve 10. Oil seal chamber 7
is maintained at a pressure corresponding to the lowest cycle pressure of the working gas, and the working gas that has entered the oil seal chamber 7 via the oil scraper 6 is returned to the compression chamber 3.

（本発明が解決しようとする問題点） 従来のシール装置では、ロッドを往復動できるようにす
るため、オイルシールリングは剛性の高いものを使用す
る必要があった。油封室に作用する作動圧が約１０ｋｇ
／−以下と低い場合には、オイルシールリング自体の剛
性が高いため、ロッドに対する追従性が不足し、シール
性が不充分である、という問題があった。(Problems to be Solved by the Present Invention) In conventional sealing devices, in order to allow the rod to reciprocate, it was necessary to use a highly rigid oil seal ring. The working pressure acting on the oil seal chamber is approximately 10 kg.
When it is as low as /- or less, the oil seal ring itself has high rigidity, so there is a problem that the followability to the rod is insufficient and the sealing performance is insufficient.

本発明は、前述した問題点を解決するために提案される
ものである。The present invention is proposed to solve the above-mentioned problems.

（問題点を解決するための手段） 本発明は、前述した問題点を解決するために、シールリ
ングがロッドに接する剛性の高い環状リングと、該環状
リングと固着されかつ環状リングと同軸状の截頭円錐形
の柔軟性の大なる弾性リングとより形成され、該弾性リ
ングの外周テーパー面が前記シール装置のシールリング
が当接する金属ホルダーのテーパー面に合致するように
形成されていることを特徴とする技術的手段を用いる。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a seal ring that includes a highly rigid annular ring that contacts the rod, and a seal ring that is fixed to the annular ring and coaxial with the annular ring. It is formed of a truncated conical elastic ring with great flexibility, and the outer peripheral tapered surface of the elastic ring is formed to match the tapered surface of the metal holder with which the seal ring of the sealing device comes into contact. Use characteristic technical means.

（作用） 本発明によれば、油封室内の油圧が弾性リングに背面か
ら作用し、弾性リングのテーパー面には半径方向の力が
生じ、柔軟性のある弾性リングはシール装置の金属ホル
ダーに圧接されるので、環状リングはロッドに圧接され
る。従ってシールリングの背圧が有効に作用し、低圧時
でもロッドへの追従性が良好になる。(Function) According to the present invention, the hydraulic pressure in the oil seal chamber acts on the elastic ring from the back, a radial force is generated on the tapered surface of the elastic ring, and the flexible elastic ring is pressed into contact with the metal holder of the sealing device. As a result, the annular ring is pressed against the rod. Therefore, the back pressure of the seal ring acts effectively, and the followability to the rod is improved even at low pressure.

（実施例） 本発明の詳細を図に示す実施例に基づいて説明する。第
１の実施例を示す第１図及び第２の実施例を示す第２図
を参照する。尚、第５図と間構成のものは、同一符号を
記して、その説明を省略する。(Example) The details of the present invention will be explained based on the example shown in the drawings. Reference is made to FIG. 1, which shows a first embodiment, and FIG. 2, which shows a second embodiment. Components similar to those in FIG. 5 are denoted by the same reference numerals, and their explanations will be omitted.

シリンダ内を往復動し、作動空間となる圧縮室３を形成
する作動ピストン２と駆動部９とを結合するロッド４ま
わりに、第５図と同様に、圧縮室３側から駆動部９側へ
と、順次、ガスリング５、オイルスクレーパ６、油封室
７、シールリング８゜（第１図）、８”　（第２図）を
配設する。油封室７を、逆止弁１０を介して圧縮室３に
連通させ、油封室７を作動ガスの最低サイクル圧に相当
する圧に保ち、オイルスクレーパ６を介して油封室７に
入った高圧作動ガスを圧縮室３に戻す。Around the rod 4 that reciprocates inside the cylinder and connects the actuating piston 2, which forms the compression chamber 3 serving as the working space, and the drive part 9, from the compression chamber 3 side to the drive part 9 side, as in FIG. Then, the gas ring 5, oil scraper 6, oil seal chamber 7, seal ring 8° (Fig. 1), and 8'' (Fig. 2) are arranged in order. It communicates with the compression chamber 3, keeps the oil seal chamber 7 at a pressure corresponding to the lowest cycle pressure of the working gas, and returns the high-pressure working gas that has entered the oil seal chamber 7 via the oil scraper 6 to the compression chamber 3.

第１図の例のシールリング８′は第３図に示すように、
ロッド４に緊密に装着可能であり、ロッド４を摺動でき
るように案内できる剛性をもった薄肉の樹脂性環状リン
グ１）と、該環状リング１）と固着されかつ環状リング
と同軸状の截頭円錐形の柔軟性の大なる弾性リング１２
とより形成される。弾性リング１２の外周テーパー面１
２ａは前記オイルスクレーパ６、油封室７、シールリン
グ８”を収容するシール装置の金属ホルダー１４のテー
パー面１５に合致するように形成され、該テーパー面１
５にシールリング８′が当接する。The seal ring 8' in the example of FIG. 1 is as shown in FIG.
A thin-walled resin annular ring 1) with rigidity that can be tightly attached to the rod 4 and guide the rod 4 in a sliding manner; Cone-shaped elastic ring 12 with great flexibility
It is formed by Outer peripheral tapered surface 1 of elastic ring 12
2a is formed to match the tapered surface 15 of the metal holder 14 of the sealing device that accommodates the oil scraper 6, oil seal chamber 7, and seal ring 8'';
A seal ring 8' is in contact with 5.

第２図の例のシールリング８”は第４図に示すように、
ロッド４に緊密に装着可能であり、ロッド４を摺動でき
るように案内できる剛性をもった薄肉の樹脂性環状リン
グ１）を有する。該環状リング１）には前記金属ボルダ
−１４のテーパー面１５に密接する面１３ａを有する薄
肉の外周リング１３が一体に形成され、全体として断面
形状がほぼＶ字形のリング部材を構成する。該リング部
材は截頭円錐形を形成し、断面における中空部に柔軟性
の大なる弾性リング１２が挿入固着されるか、一体形成
される。The seal ring 8'' in the example of FIG. 2 is as shown in FIG.
It has a rigid thin-walled resin annular ring 1) which can be tightly attached to the rod 4 and can guide the rod 4 in a sliding manner. The annular ring 1) is integrally formed with a thin outer peripheral ring 13 having a surface 13a in close contact with the tapered surface 15 of the metal boulder 14, and constitutes a ring member having a substantially V-shaped cross section as a whole. The ring member has a truncated cone shape, and a highly flexible elastic ring 12 is inserted and fixed into a hollow portion in the cross section, or is formed integrally with the ring member.

油封室７内の油圧が弾性リング１２に背面から作用し、
第３図の例の弾性リング１２のテーパー面、もしくは第
４図の例の外周リング１３のテーパー面１３ａには半径
方向の力が生じ、柔軟性のある弾性リングの作用により
シールリング８°　８′″はシール装置の金属ホルダー
１５に圧接されるので、逆に環状リング１）はロッドに
圧接される。The oil pressure in the oil seal chamber 7 acts on the elastic ring 12 from the back side,
A radial force is generated on the tapered surface of the elastic ring 12 in the example shown in FIG. 3 or on the tapered surface 13a of the outer peripheral ring 13 in the example shown in FIG. '' is pressed against the metal holder 15 of the sealing device, and conversely the annular ring 1) is pressed against the rod.

従うてシールリングの背圧が有効に作用し、低圧時でも
ロッドへの追従性が良好になる。Therefore, the back pressure of the seal ring acts effectively, and the followability to the rod is improved even at low pressure.

（効果） 本発明は、柔軟性のある弾性リングと剛性のある樹脂性
リングとの合成体よりなるシールリングを構成すること
により、ロッドに対し、シールリングの密着性を高め、
ロッドまわりのシール効果を高めた。(Effects) The present invention improves the adhesion of the seal ring to the rod by configuring the seal ring as a composite of a flexible elastic ring and a rigid resin ring.
Improved sealing effect around the rod.

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

第１図は本発明の一例を示すロッドシールを設３図は第
１図の例のシールリングの拡大断面図、第４図は第２図
の例のシールリングの拡大断面図、第５図は従来の例を
示すロッドシールを設けたスターリング機関の一部の断
面図である。Fig. 1 shows a rod seal showing an example of the present invention. Fig. 3 is an enlarged sectional view of the seal ring of the example shown in Fig. 1, Fig. 4 is an enlarged sectional view of the seal ring of the example of Fig. 2, and Fig. 5 1 is a sectional view of a part of a Stirling engine provided with a rod seal, showing a conventional example.

Claims (2)

【特許請求の範囲】[Claims] （１）　シリンダに隣接配置し、シリンダの作動ピスト
ンと出力取出し部となる駆動部との間を連結するロッド
のまわりに、前記シリンダ側から順次、オイルスクレー
パ、油封室及びシールリングを配したシール装置を有す
るスターリング機関のロッドシールにおいて、前記シー
ルリングがロッドに接する環状リングと該環状リングと
固着されかつ環状リングと同軸状の截頭円錐形の柔軟性
の大なる弾性リングとより形成され、該弾性リングの外
周テーパー面が前記シール装置のシールリングが当接す
る金属ホルダーのテーパー面に合致するように形成され
ていることを特徴とするスターリング機関のロッドシー
ル。(1) A seal that is arranged adjacent to the cylinder and has an oil scraper, an oil seal chamber, and a seal ring arranged in order from the cylinder side around a rod that connects the cylinder's operating piston and the drive section that serves as the output extraction section. In the rod seal for a Stirling engine having a device, the seal ring is formed of an annular ring in contact with the rod and a truncated conical highly flexible elastic ring fixed to the annular ring and coaxial with the annular ring, A rod seal for a Stirling engine, characterized in that an outer peripheral tapered surface of the elastic ring is formed to match a tapered surface of a metal holder with which the seal ring of the seal device comes into contact. （２）　前記環状リングがほぼＶ字状の断面形状を有す
るリング部材として形成され、該リング部材の断面の中
空部に弾性リングが形成されていることを特徴とする特
許請求の範囲第１項に記載のスターリング機関のロッド
シール。(2) Claim 1, wherein the annular ring is formed as a ring member having a substantially V-shaped cross section, and an elastic ring is formed in a hollow section of the ring member. Stirling engine rod seals listed in .
JP4629986A 1986-03-05 1986-03-05 Rod seal of staring engine Expired - Fee Related JPH0681929B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4629986A JPH0681929B2 (en) 1986-03-05 1986-03-05 Rod seal of staring engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4629986A JPH0681929B2 (en) 1986-03-05 1986-03-05 Rod seal of staring engine

Publications (2)

Publication Number Publication Date
JPS62206259A true JPS62206259A (en) 1987-09-10
JPH0681929B2 JPH0681929B2 (en) 1994-10-19

Family

ID=12743325

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4629986A Expired - Fee Related JPH0681929B2 (en) 1986-03-05 1986-03-05 Rod seal of staring engine

Country Status (1)

Country Link
JP (1) JPH0681929B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056419A (en) * 1989-07-21 1991-10-15 Aisin Seiki Kabushiki Kaisha Sealing device for a piston rod of a stirling engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056419A (en) * 1989-07-21 1991-10-15 Aisin Seiki Kabushiki Kaisha Sealing device for a piston rod of a stirling engine

Also Published As

Publication number Publication date
JPH0681929B2 (en) 1994-10-19

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