JPH07310991A - Rotary type heat exchange equipment - Google Patents
Rotary type heat exchange equipmentInfo
- Publication number
- JPH07310991A JPH07310991A JP12592294A JP12592294A JPH07310991A JP H07310991 A JPH07310991 A JP H07310991A JP 12592294 A JP12592294 A JP 12592294A JP 12592294 A JP12592294 A JP 12592294A JP H07310991 A JPH07310991 A JP H07310991A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchange
- ceramic
- gas
- seal
- rubbing surface
- 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
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガスタービンエンジン
等に用いられる回転式熱交換装置、特にその熱交換円盤
の擦動面の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary heat exchange device used in a gas turbine engine or the like, and more particularly to improvement of a rubbing surface of a heat exchange disk.
【０００２】[0002]
【従来の技術】小型のガスタービンエンジン等に用いら
れる回転式熱交換装置は、図２に示すように、エンジン
に流入する吸気等の低温ガス流５，６通路と排ガス等の
高温ガス流７，８通路との間に配設され、ローラー４に
よって支持されると共に回転駆動される熱交換円盤１を
有する。この熱交換円盤１は、図３に示すように、０．
１mm程度の厚みのセラミック薄板９からなり、格子状、
蜂の巣状あるいは波板の組立体状で細い多数の透孔を形
成し、高温ガスの通過によって加熱された部分が順次低
温ガス流中に導入され、低温ガスを加熱することによっ
て熱交換を行う。2. Description of the Related Art As shown in FIG. 2, a rotary heat exchange device used for a small gas turbine engine or the like has a low temperature gas flow 5 and 6 such as intake air flowing into the engine and a high temperature gas flow 7 such as exhaust gas. , 8 passages, a heat exchange disk 1 supported by rollers 4 and driven to rotate. As shown in FIG.
It consists of a ceramic thin plate 9 with a thickness of about 1 mm,
A large number of thin through holes are formed in the shape of a honeycomb or an assembly of corrugated plates, and the portions heated by the passage of the high temperature gas are sequentially introduced into the low temperature gas stream, and heat exchange is performed by heating the low temperature gas.
【０００３】このような熱交換装置においては、被加熱
ガスの熱交換円盤への流入ガス５は高温排出ガス８より
高圧であるため、流入ガス５が排出ガス８中に漏れ出
す。また、ガス流７は高温であるため、シール等に変形
を与えやすく、高温ガス７中へ被加熱ガス流６が漏れ出
しやすい。これらのガス漏れは熱交換装置を利用したエ
ンジン性能における損失となる。In such a heat exchange device, since the inflow gas 5 of the gas to be heated into the heat exchange disk has a higher pressure than the high temperature exhaust gas 8, the inflow gas 5 leaks into the exhaust gas 8. Further, since the gas flow 7 has a high temperature, the seal and the like are easily deformed, and the heated gas flow 6 easily leaks into the high temperature gas 7. These gas leaks result in a loss in engine performance utilizing the heat exchange device.
【０００４】[0004]
【発明が解決しようとする課題】このガス漏れを防止す
るため、従来、金属板などからなるシール３を熱交換円
盤１の擦動面２に押しつけていた。しかし、シールの押
し付け力を大きくすると、漏れは小さくなるが、動力損
失が大きくなり、また、擦動面２を構成するセラミック
が機械的摩擦等により破損する（チッピングという）恐
れがあった。特に、回転部分が多いガスタービンにとっ
ては、チッピングは運転上重大事故につながる恐れがあ
る。本発明は、シールの押し付け力を強くしても、動力
損失、チッピングの生じない回転式熱交換装置を得よう
とするものである。In order to prevent this gas leakage, conventionally, a seal 3 made of a metal plate or the like is pressed against the rubbing surface 2 of the heat exchange disk 1. However, if the pressing force of the seal is increased, the leakage is reduced but the power loss is increased, and the ceramic constituting the rubbing surface 2 may be damaged by mechanical friction or the like (called chipping). Particularly for a gas turbine having many rotating parts, chipping may cause a serious accident in operation. The present invention is intended to obtain a rotary heat exchange device in which power loss and chipping do not occur even if the pressing force of the seal is increased.
【０００５】[0005]
【課題を解決するための手段】本発明においては、図１
に示すように、熱交換円盤１のセラミック薄板９の擦動
面２を金属またはＣＶＤ法で形成されたセラミックス等
の緻密な組織で、平滑な表面を有する薄層１０で被覆し
たものである。これにより、熱交換円盤１のセラミック
薄板９の端面はシール３と直接接触せず、上記被覆層１
０で保護されるので、セラミック９は通常の材質であ
り、脆さをもつものではあってもチッピングを生じる恐
れがない。また、シール３との接触面が高強度でセラミ
ックより組織が緻密であり、その表面を平滑にできるの
で、摩擦を小さくすることが出来る。さらに、チッピン
グを生じる恐れがなく、シール３の押し付け力を大きく
することが出来、ガス通路と熱交換円盤との間のガス漏
れを小さくすることが出来る。In the present invention, FIG.
As shown in FIG. 2, the rubbing surface 2 of the ceramic thin plate 9 of the heat exchange disk 1 is covered with a thin layer 10 having a smooth surface with a dense structure of metal or ceramics formed by the CVD method. As a result, the end surface of the ceramic thin plate 9 of the heat exchange disk 1 does not come into direct contact with the seal 3 and the coating layer 1
Since it is protected by 0, the ceramic 9 is an ordinary material, and even if it is brittle, chipping does not occur. Further, the contact surface with the seal 3 has high strength, the structure is denser than that of ceramic, and the surface can be made smooth, so that friction can be reduced. Furthermore, there is no risk of chipping, the pressing force of the seal 3 can be increased, and gas leakage between the gas passage and the heat exchange disk can be reduced.
【０００６】[0006]
【実施例】以下、本発明の実施例を示す。小型ガスター
ビン用の回転式熱交換装置において、熱交換円盤１は従
来技術と同様、耐熱性に優れたアルミニウム、マグネシ
ウム、シリコン、リチウム等の酸化物からなるセラミッ
ク薄板９を格子状、蜂の巣状あるいは波板の組立体状
等、多数の透孔を有するように組立て、構成される。こ
の熱交換円盤のシール３との擦動面２は金属または緻密
な組織を持つセラミックス１０で被覆される。EXAMPLES Examples of the present invention will be shown below. In the rotary heat exchange device for a small gas turbine, the heat exchange disk 1 has a ceramic thin plate 9 made of an oxide of aluminum, magnesium, silicon, lithium or the like, which has excellent heat resistance, in a lattice shape, a honeycomb shape, or the like as in the prior art. It is assembled and configured to have a large number of through holes, such as a corrugated plate assembly. The rubbing surface 2 of the heat exchange disk with the seal 3 is coated with metal or ceramics 10 having a dense structure.
【０００７】この被覆は、減圧室中で材料分子を飛散・
付着させるスパッタリング法、高温溶融耐熱金属を熔射
する方法、もしくは化学気相蒸着（ＣＶＤ）法で緻密な
組織のセラミック薄層を堆積させる方法等によって熱交
換円盤の端面付近に被覆を形成させることが出来る。必
要があれば、擦動面２はその後、平滑な面に加工し、シ
ール３との摩擦を最小にすることができる。運転、停止
による温度変化により、被覆とセラミック間に熱膨張に
よる剥離を生じたとしても、常にシール３によって押圧
されていること、被覆がセラミック９の端部を包込んで
いることにより、大きな問題は生じない。This coating scatters material molecules in the decompression chamber.
To form a coating near the end surface of the heat exchange disk by a sputtering method of adhering, a method of spraying a high temperature molten refractory metal, or a method of depositing a ceramic thin layer having a dense structure by a chemical vapor deposition (CVD) method. Can be done. If desired, the rubbing surface 2 can then be machined into a smooth surface to minimize friction with the seal 3. Even if peeling due to thermal expansion occurs between the coating and the ceramic due to temperature change due to operation and stop, it is always pressed by the seal 3 and the coating encloses the end portion of the ceramic 9, which causes a big problem. Does not occur.
【０００８】また、熱交換円盤１の透孔の形にあわせた
孔を有する金属板を擦動面２に接合しても良い。この場
合、接合強度を高めるため、セラミックと金属の種類に
応じて適当なＮｉＣｒＡｌＹなどの中間層を設けるのが
よいことは良く知られている。シール３は保持金属材料
の上にＣｕ、ＮａＦ、ＬｉＦ、ＢａＴｉＯ3あるいはＣ
ａＦ2などをコーティングしたものが使用されるので、
摩擦を小さくするためには、被覆材料としては例えばＨ
Ａ２１４、ＩＮＫ７５０などのＮｉＣｒ系合金、耐摩耗
被覆材として知られるＣｒ2Ｏ3、あるいは緻密で平滑な
面を作れるＳｉ3Ｎ4、ＳｉＣなどが高温条件で使用する
ことができ、適当である。Further, a metal plate having holes matching the shape of the through holes of the heat exchange disk 1 may be joined to the rubbing surface 2. In this case, it is well known that it is preferable to provide an appropriate intermediate layer such as NiCrAlY according to the types of ceramic and metal in order to increase the bonding strength. The seal 3 is made of Cu, NaF, LiF, BaTiO 3 or C on the holding metal material.
Since the one coated with aF 2 is used,
To reduce friction, the coating material is, for example, H
NiCr-based alloys such as A214 and INK750, Cr 2 O 3 known as a wear-resistant coating material, or Si 3 N 4 and SiC that can form a dense and smooth surface are suitable because they can be used under high temperature conditions.
【０００９】[0009]
【発明の効果】本発明の回転式熱交換装置は、上記の構
成により、擦動面でのチッピング発生の恐れがないの
で、シール押し付け力を大きくし、ガス通路とのガス漏
れを低減してガスタービンエンジン等の高性能化が図れ
る。また、自動車等、加速度の加わる使用において、熱
交換円盤の耐衝撃性が高まる。さらに、被覆を構成する
金属を選定することにより、摩擦や摩耗特性を向上さ
せ、ガスタービン等の高性能化と長寿命化が図れるとい
う効果を奏する。According to the rotary heat exchange device of the present invention, since there is no risk of chipping on the rubbing surface, the seal pressing force is increased and gas leakage to the gas passage is reduced. High performance of gas turbine engine etc. can be achieved. In addition, the impact resistance of the heat exchange disk is enhanced in use such as an automobile in which acceleration is applied. Furthermore, by selecting the metal that constitutes the coating, it is possible to improve the friction and wear characteristics, and to achieve high performance and a long life of the gas turbine or the like.
【図１】本発明の回転式熱交換装置における熱交換円盤
の擦動面の構造の１実施例を示す概念図である。FIG. 1 is a conceptual diagram showing one embodiment of a structure of a rubbing surface of a heat exchange disk in a rotary heat exchange device of the present invention.
【図２】従来の回転式熱交換装置の構成を示す概念図で
ある。FIG. 2 is a conceptual diagram showing a configuration of a conventional rotary heat exchange device.
【図３】従来の熱交換円盤の構造を示す概念図である。FIG. 3 is a conceptual diagram showing a structure of a conventional heat exchange disc.
１ 熱交換円盤 ２ 擦動面
３ シール ４ ローラー ５、６ 低温ガス流
７、８ 高温ガス流 ９ セラミック薄板 １０ 被覆1 heat exchange disk 2 rubbing surface
3 Seal 4 Roller 5 and 6 Low temperature gas flow
7, 8 High temperature gas flow 9 Ceramic thin plate 10 Coating
Claims (2)
ス漏れシールとの擦動面を、緻密な金属薄層または緻密
な組織のセラミック薄層からなる平滑層で被覆したこと
を特徴とする回転式熱交換装置1. A rotary heat exchanger characterized in that the rubbing surface of a ceramic thin plate of a heat exchange disk against a gas leak seal is covered with a smooth layer composed of a dense metal thin layer or a ceramic thin layer of a dense structure. Exchange device
ＶＤ法で形成されることを特徴とする請求項１の回転式
熱交換装置2. The ceramic thin layer having a dense structure is C
The rotary heat exchange device according to claim 1, wherein the rotary heat exchange device is formed by a VD method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6125922A JP3000125B2 (en) | 1994-05-17 | 1994-05-17 | Rotary heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6125922A JP3000125B2 (en) | 1994-05-17 | 1994-05-17 | Rotary heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07310991A true JPH07310991A (en) | 1995-11-28 |
| JP3000125B2 JP3000125B2 (en) | 2000-01-17 |
Family
ID=14922270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6125922A Expired - Lifetime JP3000125B2 (en) | 1994-05-17 | 1994-05-17 | Rotary heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3000125B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938247A (en) * | 1972-08-15 | 1974-04-09 | ||
| JPS584277A (en) * | 1981-06-29 | 1983-01-11 | シャープ株式会社 | Connector |
| JPS5816188A (en) * | 1981-07-21 | 1983-01-29 | Nissan Motor Co Ltd | Rotary type regenerative heat exchanger |
| JPS6133429U (en) * | 1984-07-30 | 1986-02-28 | エルナ−株式会社 | Chip type solid electrolytic capacitor |
-
1994
- 1994-05-17 JP JP6125922A patent/JP3000125B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938247A (en) * | 1972-08-15 | 1974-04-09 | ||
| JPS584277A (en) * | 1981-06-29 | 1983-01-11 | シャープ株式会社 | Connector |
| JPS5816188A (en) * | 1981-07-21 | 1983-01-29 | Nissan Motor Co Ltd | Rotary type regenerative heat exchanger |
| JPS6133429U (en) * | 1984-07-30 | 1986-02-28 | エルナ−株式会社 | Chip type solid electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3000125B2 (en) | 2000-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19971125 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| EXPY | Cancellation because of completion of term |