JPH0681929B2 - Rod seal of staring engine - Google Patents
Rod seal of staring engineInfo
- Publication number
- JPH0681929B2 JPH0681929B2 JP4629986A JP4629986A JPH0681929B2 JP H0681929 B2 JPH0681929 B2 JP H0681929B2 JP 4629986 A JP4629986 A JP 4629986A JP 4629986 A JP4629986 A JP 4629986A JP H0681929 B2 JPH0681929 B2 JP H0681929B2
- Authority
- JP
- Japan
- Prior art keywords
- ring
- rod
- seal
- oil
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 15
- 230000006835 compression Effects 0.000 description 12
- 238000007906 compression Methods 0.000 description 12
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 208000032820 Ring chromosome 13 syndrome Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
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)
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。Description: The present invention relates to a rod seal of a Stirling engine, in particular to the movement of an actuating piston in a cylinder, for example to a drive part such as a crank mechanism. The present invention relates to a rod seal that prevents leakage of a working gas around a 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１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、隣り合うシリンダ
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。
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。(Prior Art) Effectively seals around a rod of a Stirling engine, and prevents leakage of a working gas (for example, helium gas) in a working space defined by a piston that reciprocates in a cylinder around the rod. As a sealing device to be used, for example, one shown in FIG. 5 is known. In FIG. 5, a working piston 2 is arranged in a cylinder 1 of a Stirling engine to form a compression chamber (working space) 3 which serves as a low temperature part. Is connected to the expansion chamber through 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, isochoric volume change, isothermal expansion and isochoric volume change are performed. Then, the working piston 2 is reciprocated.
The reciprocating motion of the working piston 2 is taken out 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止するために、圧縮
室３から駆動部９側へと、順次、オイルスクレーバ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１のロッド側端部に隣接配置してある。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
クレーバ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 lowering the output due to the lowering of the average working gas pressure, the oil scraper 6, from the compression chamber 3 to the drive unit 9 side,
A sealing device having an oil seal chamber 7 and an oil seal ring 8 is arranged adjacent to the rod-side end of the cylinder 1. A gas ring 5 is arranged at the rod-side end of the cylinder 1,
The working gas leaking through the gas ring 5 is returned to the working chamber 3 through the check valve 10 by the pipe line. The oil-sealing chamber 7 is connected to the compression chamber 3 via the check valve 10. The oil seal chamber 7 is kept at a pressure corresponding to the minimum 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/cm2
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 the conventional sealing device, in order to make the rod reciprocate, it is necessary to use a highly rigid oil seal ring. The operating pressure acting on the oil seal chamber is about 10 kg / cm 2
When the value is lower than the following, there is a problem that the rigidity of the oil seal ring itself is high, the followability to the rod is insufficient, and the sealability 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 highly rigid annular ring in which a seal ring is in contact with a rod, a ring fixed to the annular ring and coaxial with the annular ring. It is formed by a frustoconical elastic ring having great flexibility, and the outer peripheral tapered surface of the elastic ring is formed so as to match the tapered surface of the metal holder with which the seal ring of the sealing device abuts. Use the technical means that characterize it.
（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。(Operation) According to the present invention, the hydraulic pressure in the oil-sealing chamber acts on the elastic ring from the rear surface, a radial force is generated on the tapered surface of the elastic ring, and the flexible elastic ring is pressed against 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 when the pressure is low.
（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図と同構成のものは、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 described based on an example shown in the drawings. Please refer to FIG. 1 showing the first embodiment and FIG. 2 showing the second embodiment. The same components as those in FIG. 5 are designated by the same reference numerals and the description thereof 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 connects the drive piston 9 and the drive piston 2 that reciprocates in the cylinder and forms the compression chamber 3 that becomes the work space, from the compression chamber 3 side to the drive portion 9 side, as in FIG. Then, a gas ring 5, an oil scraper 6, an oil seal chamber 7, a seal ring 8 '(Fig. 1) and 8 "(Fig. 2) are arranged in this order. The oil-sealed chamber 7 is communicated with the compression chamber 3, the pressure in the oil-sealed chamber 7 is maintained at a pressure equivalent to the minimum cycle pressure of the working gas, and the high-pressure working gas that has entered the oil-sealed chamber 7 via the oil scraper 6 is returned 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11と、該環状リング11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12a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15にシールリング
８′が当接する。As shown in FIG. 3, the seal ring 8'in the example of FIG.
A thin resin annular ring 11 having a rigidity that can be tightly attached to the rod 4 and can guide the rod 4 so that the rod 4 can slide, and a truncated cone that is fixed to the annular ring 11 and is coaxial with the annular ring. It is formed from an elastic ring 12 of great shape flexibility. The outer peripheral taper surface 12a of the elastic ring 12 is formed so as to match the taper surface 15 of the metal holder 14 of the sealing device which accommodates the oil scraper 6, the oil sealing chamber 7, and the seal ring 8 ', and the taper surface 15 has a seal ring. 8'abut.
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11を有する。該環状リング11には前記金属ボルダー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、断面における中央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。As shown in FIG. 4, the seal ring 8 ″ of the example shown in FIG.
It has a thin resin annular ring 11 which can be tightly mounted on the rod 4 and has a rigidity capable of guiding the rod 4 so that it can slide. The metal boulder 14 is attached to the annular ring 11.
A thin outer peripheral ring 13 having a surface 13a in close contact with the tapered surface 15 is integrally formed, and has a cross-sectional shape of approximately V as a whole.
A letter-shaped ring member is formed. The ring member forms a frustoconical shape, and an elastic ring 12 having a large flexibility is inserted and fixed in the central portion of the cross section or integrally formed.
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11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。The hydraulic pressure in the oil-sealing chamber 7 acts on the elastic ring 12 from the rear surface, and a radial force is applied to the tapered surface of the elastic ring 12 in the example of FIG. 3 or the tapered surface 13a of the outer peripheral ring 13 in the example of FIG. As a result of the action of the flexible elastic ring, the sealing ring 8'8 "is pressed against the metal holder 15 of the sealing device, so that the annular ring 11 is pressed against the rod, so that the back pressure of the sealing ring is effective. 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。(Effect) The present invention increases the adhesion of the seal ring to the rod by configuring the seal ring made of a composite of a flexible elastic ring and a rigid resin ring,
The sealing effect around the rod has been improved.
第１図は本発明の一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、第２図は本発明の別の例
を示す第１図に対応する断面図、第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。 図中:1……シリンダ、２……作動ピストン、３……圧縮
室、４……ロッド、５……ガスシール、６……オイルス
クレーパ、７……油封室、８′８″……シールリング、
９……駆動部、11……環状リング、12……弾性リングFIG. 1 is a partial sectional view of a Stirling engine provided with a rod seal showing an example of the present invention, FIG. 2 is a sectional view corresponding to FIG. 1 showing another example of the present invention, and FIG. 1 is an enlarged cross-sectional view of the seal ring of the example of FIG. 1, FIG. 4 is an enlarged cross-sectional view of the seal ring of the example of FIG. 2, and FIG. 5 is a partial cross-section of a Stirling engine provided with a rod seal showing a conventional example. It is a figure. In the figure: 1 ... Cylinder, 2 ... Working piston, 3 ... Compression chamber, 4 ... Rod, 5 ... Gas seal, 6 ... Oil scraper, 7 ... Oil seal chamber, 8'8 "... Seal ring,
9 ... Drive part, 11 ... Annular ring, 12 ... Elastic ring
───────────────────────────────────────────────────── フロントページの続き (72)発明者 百瀬 豊 愛知県刈谷市朝日町２丁目１番地 アイシ ン精機株式会社 (56)参考文献 実開 昭58−13464（ＪＰ，Ｕ) 実開 昭59−130049（ＪＰ，Ｕ) 実開 昭59−1853（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yutaka Momose 2-1-1 Asahi-cho, Kariya city, Aichi Aisin Seiki Co., Ltd. (56) References: 58-13464 (JP, U): 59- 130049 (JP, U) Actual development Sho 59-1853 (JP, U)
Claims (2)
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. An oil scraper, an oil seal chamber and a seal ring are sequentially arranged from the cylinder side around a rod which is arranged adjacent to a cylinder and which connects a working piston of the cylinder and a drive section serving as an output take-out section. In a rod seal of a Stirling engine having a sealing device, the seal ring is formed by an annular ring in contact with the rod and a frustoconical elastic ring fixed to the annular ring and having a truncated cone shape coaxial with the annular ring. The rod seal of the Stirling engine, wherein 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 abuts.
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. An annular ring is formed as a ring member having a substantially V-shaped cross section, and an elastic ring is formed in a hollow portion of the cross section of the ring member. A rod seal for a Stirling engine according to item 1.
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 JPS62206259A (en) | 1987-09-10 |
| JPH0681929B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0354349A (en) * | 1989-07-21 | 1991-03-08 | Aisin Seiki Co Ltd | Rod seal device for sterling engine |
-
1986
- 1986-03-05 JP JP4629986A patent/JPH0681929B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62206259A (en) | 1987-09-10 |
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Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
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