JPS6229601Y2 - - Google Patents
Info
- Publication number
- JPS6229601Y2 JPS6229601Y2 JP1980084055U JP8405580U JPS6229601Y2 JP S6229601 Y2 JPS6229601 Y2 JP S6229601Y2 JP 1980084055 U JP1980084055 U JP 1980084055U JP 8405580 U JP8405580 U JP 8405580U JP S6229601 Y2 JPS6229601 Y2 JP S6229601Y2
- Authority
- JP
- Japan
- Prior art keywords
- casing
- bearing
- steam
- disk
- disc
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000035515 penetration Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
【考案の詳細な説明】
この考案は、背圧タービンにおいて、その水切
りを回転羽根に形成して漏洩蒸気の排除をより効
果的に行わせるようにしたものである。[Detailed description of the invention] This invention is a back-pressure turbine in which a drain is formed in the rotary blade to more effectively remove leaked steam.
周知のように、蒸気タービンは、羽根車及びタ
ービン羽根を取りつけたタービン軸が車室内に収
められ、車室外の軸受に支持されて回転するもの
であり、タービン軸が車室を貫く場所には蒸気の
漏れや空気の漏入を防ぐため、ラビリンスパツキ
ンなどのパツキンが設けられている。この場合、
復水タービンでは車室の最外端部屋からグランド
エジエクターにより漏洩蒸気を吸引し、復水とし
ているため大気中に蒸気の漏れは比較的少ない
が、一般工場などで広く使われている背圧タービ
ン即ち蒸気を大気圧以上の圧力で排出し、この蒸
気を他の装置に供給することを目的とするもので
はグランドエジエクター等の設備がなく、大気中
に漏れが多いことから、この蒸気が車室貫通部に
近接して設けられている軸受の内部に入つて凝縮
を起し潤滑油に水が混入する原因となつている。
このため従来、タービン軸に軸受の手前に位置し
て円板形の水切りを固設し、軸受に向う蒸気を阻
止することが行われている。しかし、この水切り
装置では、タービン軸に沿つて噴出する蒸気のう
ち、一部分はタービン軸表面に触れて液体蒸気化
し、円板周面から遠心力により外側方に吹きとば
されるが、大部分は気体のままであるから円板を
越えて軸受ケーシング側に前進し、軸の回転によ
り軸受中に吸い込れている。 As is well known, in a steam turbine, a turbine shaft with an impeller and turbine blades attached is housed in a casing and rotates while being supported by a bearing outside the casing. To prevent steam leakage and air leakage, gaskets such as labyrinth gaskets are provided. in this case,
In a condensing turbine, leaked steam is sucked in from the outermost room of the casing by a gland ejector and converted into condensate, so there is relatively little leakage of steam into the atmosphere.However, back pressure is widely used in general factories. Turbines, which discharge steam at a pressure higher than atmospheric pressure and supply this steam to other equipment, do not have equipment such as a grand ejector, and there is a lot of leakage into the atmosphere. The water enters the inside of the bearing, which is installed close to the casing penetration part, and condenses, causing water to get mixed into the lubricating oil.
For this reason, conventionally, a disk-shaped water drainer is fixedly installed on the turbine shaft in front of the bearing to prevent steam from flowing toward the bearing. However, with this water drainer, a portion of the steam ejected along the turbine shaft comes into contact with the turbine shaft surface, turns into liquid vapor, and is blown outward from the circumferential surface of the disk by centrifugal force, but most of the steam is turned into gas. Since it remains as it is, it moves forward beyond the disk toward the bearing casing, and is sucked into the bearing by the rotation of the shaft.
これに対し、この考案は、上記従来の水切り
を、回転羽根に形成して強制的に蒸気の分散を行
わせるようにしたものであつて、この考案の実施
例を図面について説明すると、第1図において、
1はタービン軸、2は車室、3は軸受、4は軸受
ケーシング、5はタービン軸が車室を貫く所に設
けられたラビリンスパツキンである。タービン軸
1には車室2と軸受ケーシング4との間に当る部
分に車室2に近接して円板状の回転羽根6が取付
ネジ7を介して附設されている。この回転羽根6
は、円板8の車室に向う面に半径に沿つて1個あ
るいは放射状に配設された複数個の隆条9が附設
されている。この隆条9の先端は円板8の周縁に
達しているが、基端は前記したように液体蒸気が
溜る所であるから必ずしもタービン軸1に達する
必要はない。また、隆条9の突出度はあまり大に
すると単に蒸気を撹乱するだけとなるから円板8
面から若干もり上つている程度でよく、通常円板
8とは一体に製造される。 On the other hand, this invention is such that the above-mentioned conventional drainer is formed on a rotary blade to forcefully disperse steam. In the figure,
1 is a turbine shaft, 2 is a casing, 3 is a bearing, 4 is a bearing casing, and 5 is a labyrinth packing provided where the turbine shaft passes through the casing. A disk-shaped rotary blade 6 is attached to the turbine shaft 1 at a portion between the casing 2 and the bearing casing 4 and close to the casing 2 via a mounting screw 7 . This rotating blade 6
In this case, one ridge 9 or a plurality of ridges 9 arranged radially are attached to the surface of the disc 8 facing the vehicle interior along the radius. Although the tip of this ridge 9 reaches the peripheral edge of the disk 8, the base end does not necessarily have to reach the turbine shaft 1 because the liquid vapor accumulates at the base end, as described above. In addition, if the degree of protrusion of the ridge 9 is too large, it will simply disturb the steam, so the disc 8
It only needs to be slightly raised above the surface, and is usually manufactured integrally with the disk 8.
この考案は上記の構造であつて、従来の単なる
円板状の水切りを、円板8の板面に半径に沿つて
隆条9を有する回転羽根6に形成したため、車室
貫通部から漏出して回転羽根に吹きつける蒸気
は、この隆条9により流体中の回転ポンプのラン
ナーと同様の原理によつて遠心力を附与され強制
的に外側方に吹きとばされるから前記従来の軸受
の潤滑を妨げることが防止され、更に、この作用
は瞬間に行われるものであるから、回転羽根6自
体の加熱も殆んどなく、逆に、この回転羽根6が
冷却フインとなるため、車室2の放熱により加熱
されている軸受3部分の温度を大きく低下させる
ことができる。 This invention has the above-mentioned structure, and since the conventional simple disk-shaped water drainer is formed on the rotary blade 6 having ridges 9 along the radius on the plate surface of the disk 8, leakage from the passenger compartment penetration part is prevented. The ridges 9 apply centrifugal force to the steam blown onto the rotating blades by the same principle as in the runners of a rotary pump in fluid, and the steam is forcibly blown outward, thereby reducing the lubrication of the conventional bearing. Further, since this action is instantaneous, there is almost no heating of the rotating blade 6 itself, and conversely, since the rotating blade 6 acts as a cooling fin, the casing 2 The temperature of the portion of the bearing 3 that is heated due to the heat dissipation can be significantly reduced.
第1図はこの考案の水切り部分の側面図、第2
図は回転円板の正面図である。
図中符号、1はタービン軸、2は車室、3は軸
受、4は軸受ケーシング、6は回転羽根、8は円
板、9は隆条を示す。
Figure 1 is a side view of the draining part of this invention, Figure 2
The figure is a front view of the rotating disk. In the figure, reference numerals 1 indicate a turbine shaft, 2 indicates a casing, 3 indicates a bearing, 4 indicates a bearing casing, 6 indicates a rotating blade, 8 indicates a disc, and 9 indicates a ridge.
Claims (1)
グ4との間に位置して円板状の水切りを設けたも
のにおいて、上記水切りを、円板8の車室2貫通
部と近接して対向する面に、円板8の半径に沿つ
て、外周から中心に近く達する隆条9を、板面か
ら若干突出させて隆成した回転羽根6に形成して
なる背圧タービンにおける水切り。 In the case where the turbine shaft 1 is provided with a disc-shaped water cutter located between the casing 2 penetration part and the bearing casing 4, the water cutter is located close to and opposite to the casing 2 penetration part of the disc 8. A water drain in a back pressure turbine, in which a ridge 9 extending from the outer periphery to the center near the center along the radius of a disk 8 is formed on a raised rotary blade 6 slightly protruding from the plate surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1980084055U JPS6229601Y2 (en) | 1980-06-16 | 1980-06-16 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1980084055U JPS6229601Y2 (en) | 1980-06-16 | 1980-06-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS578304U JPS578304U (en) | 1982-01-16 |
JPS6229601Y2 true JPS6229601Y2 (en) | 1987-07-30 |
Family
ID=29446368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1980084055U Expired JPS6229601Y2 (en) | 1980-06-16 | 1980-06-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6229601Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS609298A (en) * | 1983-06-28 | 1985-01-18 | Matsushita Electric Ind Co Ltd | Coaxial type loudspeaker unit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4729003U (en) * | 1971-04-20 | 1972-12-02 | ||
JPS552163Y2 (en) * | 1977-02-10 | 1980-01-21 |
-
1980
- 1980-06-16 JP JP1980084055U patent/JPS6229601Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS578304U (en) | 1982-01-16 |
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