CN203879553U - Dehumidification stage device of marine steam turbine - Google Patents
Dehumidification stage device of marine steam turbine Download PDFInfo
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- CN203879553U CN203879553U CN201420332625.3U CN201420332625U CN203879553U CN 203879553 U CN203879553 U CN 203879553U CN 201420332625 U CN201420332625 U CN 201420332625U CN 203879553 U CN203879553 U CN 203879553U
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- blade
- dehumidification
- stage device
- moving
- steam turbine
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Abstract
A dehumidification stage device of a marine steam turbine is mainly formed by a fixed blade, a dehumidification moving blade and a water collection chamber. The dehumidification stage device is characterized in that the 0.3 to 0.5 of relative pitch t/b and a 40 to 80 mm of moving and fixed blade gap structure are adopted; a moving blade back arc is provided with a water capture groove and a drainage hole which is formed at the top of a blade crown; a cylinder is provided with the water collection chamber; the drainage hole is communicated with the water collection chamber. According to the dehumidification stage device of the marine steam turbine, the deposition rate of water droplets is effectively improved due to the small relative pitch and accordingly the improvement of the dehumidification efficiency is facilitated; the water droplets which fly out through the steam outlet edge of the fixed blade can be deposited at the large blade height of position of the moving blade due to the large moving and fixed blade gap and accordingly the centrifugal force of the water droplets is increased; the dehumidification efficiency of the dehumidification stage device is greatly improved due to the special blade structure.
Description
technical field:
The utility model relates to mechanical equipment technical field, refers in particular to a kind of marine turbing dehumidifying stage arrangement.
background technique:
Steam turbine is the external combustion rotary machine that steam thermal energy can be converted into mechanical work, from the steam of boiler, enters after steam turbine, passes through successively nozzle and the movable vane of a series of loop configurations, the heat energy of steam is converted into the mechanical energy of turbine rotor rotation.Steam, in steam turbine, carries out transformation of energy by different way, has just formed the steam turbine of different operating principle.
Level: the level that a row nozzle and a row movable vane thereafter form.
Simple turbine: the steam turbine that only has a level to form.
Multistage turbine: by a plurality of grades of steam turbine that form.
Impulse steam turbine: expand in nozzle, do work in movable vane.
Reaction turbine: respectively expand 50% in nozzle and movable vane.
What is all operated under wet-steam phase at steam turbine end, and the water droplet in steam can produce erosion attack to blade, shortens unit durability.Existing steam turbine internal moisture removal technology, as outer rim dehumidifying, dehumidification rate is lower, can not protect well final blage to avoid large water droplet erosion.
model utility content:
The purpose of this utility model is to provide a kind of marine turbing dehumidifying stage arrangement, solves the lower problem of current steam turbine internal moisture removal technical efficiency, realizes and efficiently dehumidifies and protect final blage, the object that extends unit durability.
The purpose of this utility model realizes as follows: a kind of marine turbing dehumidifying stage arrangement, mainly by stator blade, the movable vane that dehumidifies, the chamber that catchments, formed, it is characterized in that: the moving-stator blade gap structure that is set up the relative pitch t/b, the 40～80mm that have adopted 0.3～0.5 at cloth; On movable vane back of the body arc, the weep hole of catching tank and integral shroud top is set, on cylinder, is provided with the chamber that catchments, weep hole connected set water chamber.
The beneficial effects of the utility model are, have adopted 0.3～0.5 relative pitch t/b effectively to improve the deposition of water droplet, are conducive to the raising of dehumidification rate; Larger moving-stator blade gap can make the droplet deposition flying out through stator blade lagging edge on the higher position of the relative leaf height of movable vane, increases the suffered centrifugal force of water droplet; Special blade structure has improved the dehumidification rate of dehumidifying stage arrangement greatly.
accompanying drawing explanation:
Accompanying drawing is the utility model structural representation.
In figure: stator blade 1, dehumidifying movable vane 2, catch tank 2-1, weep hole 2-2, chamber 3 catchments.
embodiment:
With reference to accompanying drawing, a kind of marine turbing dehumidifying stage arrangement, is mainly comprised of stator blade 1, dehumidifying movable vane 2, the chamber 3 that catchments, and it is characterized in that: the moving-stator blade gap structure that is set up the relative pitch t/b, the 40～80mm that have adopted 0.3～0.5 at cloth; On movable vane back of the body arc, the weep hole 2-2 that catches tank 2-1 and integral shroud top is set, on cylinder, is provided with the chamber 3 that catchments, weep hole 2-2 connected set water chamber 3.Less relative pitch can effectively improve the deposition of water droplet, is conducive to the raising of dehumidification rate; Larger moving-stator blade gap can make the droplet deposition flying out through stator blade lagging edge on the higher position of the relative leaf height of movable vane, increases the suffered centrifugal force of water droplet; The weep hole 2-2 that catches tank 2-1 and integral shroud top carrying on the back on arc by movable vane can drain into the moisture that is deposited on movable vane surface the chamber 3 that catchments on cylinder, and then by the hydrophobic condenser that enters, this structure has improved dehumidification rate greatly.
Claims (1)
1. marine turbing dehumidifying stage arrangement, mainly by stator blade (1), dehumidifying movable vane (2), the chamber that catchments (3), formed, it is characterized in that: the moving-stator blade gap structure that is set up the relative pitch t/b, the 40～80mm that have adopted 0.3～0.5 at cloth; On movable vane back of the body arc, the weep hole (2-2) of catching tank (2-1) and integral shroud top is set, on cylinder, is provided with the chamber that catchments (3), weep hole (2-2) connected set water chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332625.3U CN203879553U (en) | 2014-06-23 | 2014-06-23 | Dehumidification stage device of marine steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420332625.3U CN203879553U (en) | 2014-06-23 | 2014-06-23 | Dehumidification stage device of marine steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879553U true CN203879553U (en) | 2014-10-15 |
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ID=51680062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420332625.3U Active CN203879553U (en) | 2014-06-23 | 2014-06-23 | Dehumidification stage device of marine steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879553U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061023A (en) * | 2014-06-23 | 2014-09-24 | 中国船舶重工集团公司第七�三研究所 | Marine turbine dehumidification device |
-
2014
- 2014-06-23 CN CN201420332625.3U patent/CN203879553U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061023A (en) * | 2014-06-23 | 2014-09-24 | 中国船舶重工集团公司第七�三研究所 | Marine turbine dehumidification device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150928 Address after: 150000 No. 35, Honghu Road, Yingbin Road, Harbin hi tech Development Zone, Heilongjiang, China Patentee after: Harbin broad power technology development Co., Ltd. Address before: 150000 Honghu Road, Daoli District, Heilongjiang, No. 35, Harbin Patentee before: No.703 Inst. China Ship Heavy Industry Group Co. |