JPH0218626U - - Google Patents
Info
- Publication number
- JPH0218626U JPH0218626U JP9451888U JP9451888U JPH0218626U JP H0218626 U JPH0218626 U JP H0218626U JP 9451888 U JP9451888 U JP 9451888U JP 9451888 U JP9451888 U JP 9451888U JP H0218626 U JPH0218626 U JP H0218626U
- Authority
- JP
- Japan
- Prior art keywords
- air intake
- gear unit
- unit case
- intake member
- accessory gear
- 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
- 230000002000 scavenging effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims 2
- 239000010687 lubricating oil Substances 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Supercharger (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
第１図は本考案によるガスタービンエンジンを
示す構成図、第２図は第１図のエアインテーク部
材とラビリンスシールの部分の拡大図、第３図は
第２図に相当する部分の変化実施例を示す図であ
る。
１０……エンジンハウジング、１２……コンプ
レツサインペラ、１６……タービン軸、１８……
コンプレツサタービン、２０……パワータービン
、２６……オイルパン、２８……エアインテーク
部材、３４……ボス部、３６，３８……軸受、４
０……ラビリンスシール、４８……アクセサリギ
ヤユニツトケース、５０……軸受室、６０……ス
カベンジングポンプ、６８，７０……連通孔、７
２，７４……連通孔。
Fig. 1 is a configuration diagram showing a gas turbine engine according to the present invention, Fig. 2 is an enlarged view of the air intake member and labyrinth seal portion of Fig. 1, and Fig. 3 is a modified example of the part corresponding to Fig. 2. FIG. 10...Engine housing, 12...Complex impeller, 16...Turbine shaft, 18...
Compressor turbine, 20... Power turbine, 26... Oil pan, 28... Air intake member, 34... Boss portion, 36, 38... Bearing, 4
0... Labyrinth seal, 48... Accessory gear unit case, 50... Bearing chamber, 60... Scavenging pump, 68, 70... Communication hole, 7
2,74...Communication hole.
Claims (1)
ク部材と、コンプレツサインペラを担持し且つ該
エアインテーク部材の中央に設けたボス部に嵌合
されるタービン軸と、該タービン軸と該エアイン
テーク部材のボス部との間に配置される軸受と、
該軸受よりもコンプレツサインペラ側で該タービ
ン軸と該エアインテーク部材のボス部との間に設
けたラビリンスシールと、該エアインテーク部材
のほぼ外周に沿つて取り付けられたアクセサリギ
ヤユニツトケースと、該アクセサリギヤユニツト
ケース内に集まつた潤滑オイルをオイルパンに戻
すためのスカベンジングポンプとを備えたガスタ
ービンエンジンにおいて、前記スカベンジングポ
ンプによつて前記アクセサリギヤユニツトケース
内に負圧を発生せしめるように構成するとともに
、前記アクセサリギヤユニツトケース内部の空間
と該アクセサリギヤユニツトケースと前記エアイ
ンテーク部材とによつて形成される軸受室との間
の仕切り壁に連通孔を設けて、該軸受室に前記ア
クセサリギヤユニツトケース内の負圧を供給し、
よつて、前記軸受から前記ラビリンスシールを通
つてコンプレツサの吸入部に向かう空気の流れを
防止するようにしたガスタービンエンジンのオイ
ルシール構造。 an air intake member fixed to the engine housing; a turbine shaft that carries a compressed impeller and is fitted into a boss portion provided at the center of the air intake member; the turbine shaft and the boss portion of the air intake member; a bearing placed between the
a labyrinth seal provided between the turbine shaft and the boss portion of the air intake member on the compressor impeller side of the bearing; an accessory gear unit case attached approximately along the outer periphery of the air intake member; In a gas turbine engine equipped with a scavenging pump for returning lubricating oil collected in an accessory gear unit case to an oil pan, the scavenging pump generates negative pressure in the accessory gear unit case. In addition, a communication hole is provided in the partition wall between the space inside the accessory gear unit case and the bearing chamber formed by the accessory gear unit case and the air intake member, so that the bearing chamber is provided with a communication hole. supplying negative pressure within the accessory gear unit case;
Therefore, an oil seal structure for a gas turbine engine is configured to prevent air from flowing from the bearing toward the suction section of the compressor through the labyrinth seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9451888U JPH06603Y2 (en) | 1988-07-19 | 1988-07-19 | Gas turbine engine oil seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9451888U JPH06603Y2 (en) | 1988-07-19 | 1988-07-19 | Gas turbine engine oil seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0218626U true JPH0218626U (en) | 1990-02-07 |
| JPH06603Y2 JPH06603Y2 (en) | 1994-01-05 |
Family
ID=31319049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9451888U Expired - Lifetime JPH06603Y2 (en) | 1988-07-19 | 1988-07-19 | Gas turbine engine oil seal structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06603Y2 (en) |
-
1988
- 1988-07-19 JP JP9451888U patent/JPH06603Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06603Y2 (en) | 1994-01-05 |
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