CN200985803Y - Active blade integral enclosing belt radial packing teeth used for steam turbine high pressure through flow - Google Patents
Active blade integral enclosing belt radial packing teeth used for steam turbine high pressure through flow Download PDFInfo
- Publication number
- CN200985803Y CN200985803Y CN 200620049621 CN200620049621U CN200985803Y CN 200985803 Y CN200985803 Y CN 200985803Y CN 200620049621 CN200620049621 CN 200620049621 CN 200620049621 U CN200620049621 U CN 200620049621U CN 200985803 Y CN200985803 Y CN 200985803Y
- Authority
- CN
- China
- Prior art keywords
- vapor lock
- flow
- tooth
- gland
- high pressure
- 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 - Lifetime
Links
Images
Abstract
The utility model relates to a steam turbine high pressure through flow radial direction vapor lock structure, which is a movable vane whole shroud radial direction vapor lock tooth and is characterized in that the top of the movable vane shroud is provided with a vapor lock tooth forms a comb teeth maze type vapor lock with the vapor lock tooth of the vapor lock ring embedded in the inner cylinder. Compared with the original flat tooth vapor lock structure, the utility model has larger coefficient of resistance; while compared with the original step type high and low tooth vapor lock, the utility model can add more teeth, thereby reducing the leaking loss caused by the high pressure through flow vapor lock, enhancing sealing effect and improving the through flow efficiency.
Description
(1) technical field
The utility model relates to the through-flow radial gland structure of turbine high-pressure.
(2) background technique
The major influence factors that influences the through-flow efficient of steam turbine unit has profile loss, leaving loss, leakage loss etc., wherein leakage loss is mainly determined that by the Steam loss that leaks factors such as through-flow rotor and stator gap and leakage way structure can influence the leakage rate of unit.Radial gland structure that existing turbine high-pressure is through-flow adopts flat toothing as shown in Figure 1 mostly, promptly locating an end on the shroud leaf top that high pressure carries the shroud moving vane is the plane, arrange stage teeth in the inner casing corresponding position, this structure can be considered sound thermal expansion bloated poor of unit, can arrange the more number of teeth, but the monodentate leakage efficiency is lower.Also have a kind ofly for step type stage teeth gland seal structure,, promptly process step, arrange stage teeth in the inner casing corresponding position,, reduce pressure, reduce and leak by the dissipation effect in the packing runner at the place, shroud leaf top that high pressure carries the shroud moving vane referring to Fig. 2.This structure is because the cooperation of step and stage teeth, to the requirement of axial clearance than higher, its advantage be the monodentate leakage efficiency than higher, shortcoming is in same axial length, the gear ratio of cloth is less.
(3) summary of the invention
The purpose of this utility model is to provide a kind of through-flow movable vane integral (tip) shroud radial gland tooth of turbine high-pressure that is used for, and this shroud radial gland tooth can increase the packing number of teeth, constitutes the broach labyrinth gland on the leaf top, can effectively prevent the high-pressure section leakage losses.
The utility model is achieved in that a kind of through-flow movable vane integral (tip) shroud radial gland tooth of turbine high-pressure that is used for, it is characterized in that: moving blade ' s shroud band is processed with gland sealing gear on the top, and described gland sealing gear constitutes the broach labyrinth gland with the gland sealing gear that is embedded on the labyrinth ring of inner casing.
The utility model is directly to process gland sealing gear on moving blade ' s shroud band leaf top, constitute the broach labyrinth gland with the gland sealing gear on the labyrinth ring that is embedded in inner casing, gland sealing gear on the shroud leaf top is than the height height of step type, the number of teeth also can increase, make the steam kinetic energy better conversion pressure energy in next steam chest that flows through backlash, each gland sealing gear can play the effect of envelope vapour all the time in the actual motion, thereby reaches the minimizing steam leakage, improves the purpose of through-flow efficient.
The utility model is with respect to existing step type stage teeth packing, because number of teeth increase can reduce Steam loss; With respect to existing flat tooth packing, because gland sealing gear constitutes the broach labyrinth gland on the leaf top, increased the flow resistance of steam, reduced the high-pressure section Steam loss, strengthen sealing effect, improve through-flow efficient.
(4) description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is flat tooth gland seal structure schematic representation;
Fig. 2 is a step type stage teeth gland seal structure schematic representation;
Fig. 3 is the utility model broach labyrinth gland structural representation.
Among the figure: 1 movable vane (rotor), 2 labyrinth rings, 3 jam-pack bars, 4 gland sealing gears, 5 stators (inner casing), 6 shrouds.
(5) embodiment
Referring to Fig. 3, a kind of through-flow movable vane integral (tip) shroud radial gland tooth of turbine high-pressure that is used for is to be processed with gland sealing gear 4 on movable vane 1 shroud 6 tops, and described gland sealing gear 4 constitutes the broach labyrinth gland with gland sealing gear on the labyrinth ring 2 that is embedded in inner casing 5.Gland sealing gear 4 on the labyrinth ring 2 can adopt processing or adopt inserted structure.Gland sealing gear 4 radially leaves surplus, processes registration after the assembling on request the gap of tooth packing is got final product.
The original relatively flat tooth gland seal structure of the utility model, resistance coefficient is bigger; And, can increase more multiple tooth number with respect to original step type stage teeth packing, the leakage losses of the reduction high pressure flow packing of big limit strengthens sealing effect, improves through-flow efficient.
Claims (1)
1. one kind is used for the through-flow movable vane integral (tip) shroud radial gland tooth of turbine high-pressure, and it is characterized in that: moving blade ' s shroud band is processed with gland sealing gear on the top, and described gland sealing gear constitutes the broach labyrinth gland with the gland sealing gear that is embedded on the labyrinth ring of inner casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049621 CN200985803Y (en) | 2006-12-27 | 2006-12-27 | Active blade integral enclosing belt radial packing teeth used for steam turbine high pressure through flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620049621 CN200985803Y (en) | 2006-12-27 | 2006-12-27 | Active blade integral enclosing belt radial packing teeth used for steam turbine high pressure through flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200985803Y true CN200985803Y (en) | 2007-12-05 |
Family
ID=38915261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620049621 Expired - Lifetime CN200985803Y (en) | 2006-12-27 | 2006-12-27 | Active blade integral enclosing belt radial packing teeth used for steam turbine high pressure through flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200985803Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335672A (en) * | 2011-09-29 | 2012-02-01 | 湖南现代威保特环保科技有限公司 | Harmless dehydrator |
| CN112196629A (en) * | 2020-11-12 | 2021-01-08 | 东方电气集团东方汽轮机有限公司 | Sealing structure and sealing method for moving blade of steam turbine |
-
2006
- 2006-12-27 CN CN 200620049621 patent/CN200985803Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102335672A (en) * | 2011-09-29 | 2012-02-01 | 湖南现代威保特环保科技有限公司 | Harmless dehydrator |
| CN102335672B (en) * | 2011-09-29 | 2013-11-06 | 湖南现代环境科技有限公司 | Harmless dehydrator |
| CN112196629A (en) * | 2020-11-12 | 2021-01-08 | 东方电气集团东方汽轮机有限公司 | Sealing structure and sealing method for moving blade of steam turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2014084816A (en) | Axial flow turbine | |
| CN105587346A (en) | Sealing device and turbo machine | |
| WO2013126126A3 (en) | Axial flow compressor tip clearance control by axial shift of rotor | |
| CN204200279U (en) | A kind of turbine high-temperature heat expansion compensates stator sealing configuration | |
| CN108590778B (en) | Axial-flow type organic working medium turboexpander | |
| CN200985803Y (en) | Active blade integral enclosing belt radial packing teeth used for steam turbine high pressure through flow | |
| CN102797512B (en) | Steam sealing structure for steam turbines and assembling method thereof | |
| CN102251812A (en) | 1800mm last-stage movable blade used on half-revolving speed nuclear turbine | |
| US20160290511A1 (en) | Shaft seal and method for producing same | |
| CN201991572U (en) | Labyrinth gland with combined main teeth, side teeth and honeycomb belt | |
| CN202417617U (en) | Radial labyrinth gland of turbine | |
| CN202851974U (en) | Tooth-shaped structure capable of self-restraining effective flow area | |
| CN201159091Y (en) | Gas-facing type honeycomb sealing | |
| CN104481595A (en) | Steam turbine honeycomb opposite tooth steam seal device | |
| CN208578590U (en) | The packing of steam turbine combines | |
| CN203614142U (en) | Building block technology-based modular steam seal | |
| CN201460994U (en) | Novel double-tooth sharp-lateral-tooth steam seal | |
| CN202047870U (en) | Improved rotor sealing structure of improved 300 MW steam turbine | |
| CN210919164U (en) | Multi-section carbon ring labyrinth seal structure of supercritical carbon dioxide turboexpander | |
| CN108533757A (en) | A kind of labyrinth seal structure that can increase chamber dissipation | |
| CN201953418U (en) | Composite toothed steam seal | |
| RU131814U1 (en) | TURBOMETER RADIAL GAP CELL SEAL | |
| CN202851091U (en) | Tooth top clearance local resistance-increasing seal tooth type structure | |
| CN105299171A (en) | Pump wheel of hydraulic torque converter | |
| CN206668622U (en) | Has the water pump structure of Unitary Impeller pump shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC POWER STATION EQUIPMENT CO. Free format text: FORMER OWNER: SHANGHAI TURBINE CO., LTD. Effective date: 20080509 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080509 Address after: No. 188, Chun Chun Road, Shanghai, Minhang District: 201100 Patentee after: Shanghai Electric Station Equipment Co., Ltd. Address before: No. 333, Jiangchuan Road, Shanghai, Minhang District: 200240 Patentee before: Shanghai Steam Turbine Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071205 |
|
| EXPY | Termination of patent right or utility model |