CN202047870U - Improved rotor sealing structure of improved 300 MW steam turbine - Google Patents
Improved rotor sealing structure of improved 300 MW steam turbine Download PDFInfo
- Publication number
- CN202047870U CN202047870U CN2011201583199U CN201120158319U CN202047870U CN 202047870 U CN202047870 U CN 202047870U CN 2011201583199 U CN2011201583199 U CN 2011201583199U CN 201120158319 U CN201120158319 U CN 201120158319U CN 202047870 U CN202047870 U CN 202047870U
- Authority
- CN
- China
- Prior art keywords
- steam
- packing
- tooth
- improved
- steam turbine
- 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
A steam seal structure of an improved 300 MW steam turbine is used for improving the sealing performance of the steam turbine, and adopts the technical scheme that an improved rotor sealing structure of the 300 MW steam turbine includes a steam turbine rotor, a partition board sleeve and a steam seal, wherein the steam seal is installed on an inner cylinder or a partition board sleeve of the corresponding level; one steam seal high tooth and three low teeth are embedded at the partition board of the corresponding level; the steam seal and a blade top shroud ring forms a blade top sealing structure; the steam seal high tooth, the steam seal low teeth and the rotor form a sealing structure at the partition board; and the blade top shroud ring of the corresponding level and a rotating shaft part matched with the partition board steam seal are processed and formed through turning. The steam leakage within the level of the steam turbine is reduced and the efficiency of the steam turbine is improved after the improvement, and compared with the flat tooth steam seal, the steam seal structure has better sealing performance based on the functional scheme.
Description
Affiliated technical field
The utility model directly applies to saving energy and reduce the cost, increasing on the transformation project of unit output of 300MW steam turbine set.
Background technique
Domestic some reactionary style 300MW steam turbine, pressure reduction is very big before and after high pressure blade tip seal and the diaphragm gland, but packing is flat toothing, and the between cog venturi effect is bad, and steam leakage is serious, and unit efficiency is low.
Summary of the invention
Leak vapour for reducing this type steam turbine leaf top and diaphragm gland, improve turbine efficiency, transform blade tip seal and diaphragm gland as the stage teeth gland seal structure.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of improved 300MW turbine rotor sealing configuration, comprise turbine rotor, diaphragm housing ring, packing, on the inner casing of respective stages or diaphragm housing ring, packing is installed, inlay the low tooth of high tooth of 1 road packing and 3 road packings at respective stages dividing plate place, packing and leaf top girth band form leaf top sealing configuration, the high tooth of packing, the low tooth of packing and rotor form dividing plate place sealing configuration, and the leaf top girth band of respective stages and the rotating shaft position that cooperates with diaphragm gland are turning machine shaping.
Leaf top sealing configuration is a stage teeth, and admission end is high tooth, and the low tooth in back is a cellular band.The diaphragm gland admission end is high tooth together, and other three road is low tooth.
The beneficial effects of the utility model are steam turbine set to be reached reduce the purpose of leaking vapour, raising the efficiency, increasing the unit output ability.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a blade tip seal assembling schematic representation of the present utility model.
Fig. 2 is a diaphragm gland assembling schematic representation of the present utility model.
1. inner casings or diaphragm housing ring among the figure, 2. dividing plate outer shroud, 3. packing, 4. cellular band, 5. leaf top girth band, 6. leaf top turning part, 7. movable vane, 8. rotor, 9. rotating shaft turning part, the 10. high tooth of packing, 11. packings hang down tooth.
Embodiment
After the shutdown; related datas such as on-the-spot mapping rotor turning position diameter, axial clearance, rotor bow, the impeller wooden dipper is inclined to one side and rolling degree, axle journal are beated; the turning lathe is installed then,, is guaranteed that the rolling degree at machining accuracy and each turning position meets standard according to drawing turning rotor.Low-speed balancing is done at rotor scene after the turning.On the leaf top stage teeth packing is installed then, is inlayed the low gland sealing gear of a Senior Three at the dividing plate place, adjust the labyrinth clearance to design load.
In Fig. 1,2 illustrated embodiments, after lathe installs, utilize machined into (6) (9) to locate design size, guarantee that machining accuracy and working position rolling degree meet the requirements, and working position detected a flaw, go up installation packing (3) at the inner casing or the diaphragm housing ring (1) of respective stages then, inlay the low tooth (11) of high tooth of 1 road packing (10) and 3 road packings at respective stages dividing plate place.Packing (3) forms leaf top sealing configuration with leaf top girth band (5), the high tooth of packing (10), the low tooth (11) of packing form dividing plate place sealing configuration with rotor (8), rotor axial gap A, D, E after guaranteeing to install satisfies the bloated difference of the operation requirement under each load condition of unit, guarantees that simultaneously rotor and gland sealing gear radial clearance B, F, G reach with cellular band (4) radial clearance C and meet design requirement.
Claims (3)
1. improved 300MW turbine rotor sealing configuration, comprise turbine rotor, diaphragm housing ring, packing, it is characterized in that: inner casing or diaphragm housing ring (1) in respective stages are gone up installation packing (3), inlay the low tooth (11) of high tooth of 1 road packing (10) and 3 road packings at respective stages dividing plate place, packing (3) forms leaf top sealing configuration with leaf top girth band (5), the high tooth of packing (10), the low tooth (11) of packing form dividing plate place sealing configuration with rotor (8), and the leaf top girth band of respective stages and the rotating shaft position that cooperates with diaphragm gland are turning machine shaping.
2. 300MW turbine rotor sealing configuration according to claim 1 is characterized in that: described leaf top sealing configuration is a stage teeth, and admission end is high tooth, and the low tooth in back is a cellular band.
3. 300MW turbine rotor sealing configuration according to claim 1 is characterized in that: described diaphragm gland admission end is high tooth together, and other three road is low tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201583199U CN202047870U (en) | 2011-05-18 | 2011-05-18 | Improved rotor sealing structure of improved 300 MW steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201583199U CN202047870U (en) | 2011-05-18 | 2011-05-18 | Improved rotor sealing structure of improved 300 MW steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202047870U true CN202047870U (en) | 2011-11-23 |
Family
ID=44988181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201583199U Expired - Lifetime CN202047870U (en) | 2011-05-18 | 2011-05-18 | Improved rotor sealing structure of improved 300 MW steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202047870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134511A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Compressor |
| CN114483210A (en) * | 2021-12-27 | 2022-05-13 | 东方电气集团东方汽轮机有限公司 | Steam seal structure between dynamic and static parts of radial flow turbine |
-
2011
- 2011-05-18 CN CN2011201583199U patent/CN202047870U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134511A1 (en) * | 2018-12-25 | 2020-07-02 | 珠海格力电器股份有限公司 | Compressor |
| CN114483210A (en) * | 2021-12-27 | 2022-05-13 | 东方电气集团东方汽轮机有限公司 | Steam seal structure between dynamic and static parts of radial flow turbine |
| CN114483210B (en) * | 2021-12-27 | 2024-02-13 | 东方电气集团东方汽轮机有限公司 | Steam seal structure between dynamic and static parts of radial turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109538309B (en) | Shaft end self-sealing structure with high rotating speed and high pressure difference | |
| CN202047870U (en) | Improved rotor sealing structure of improved 300 MW steam turbine | |
| CN104989461B (en) | Full floating bearing turbocharger rotor-support-foundation system | |
| CN204827541U (en) | Full floating bearing turbo charger rotor system | |
| CN202031659U (en) | Combined steam seal structure for axial-flow turbine | |
| CN203655422U (en) | Turbocharger vortex end combined sealing structure | |
| CN201991572U (en) | Labyrinth gland with combined main teeth, side teeth and honeycomb belt | |
| RU2012153054A (en) | TURBO MACHINE, TURBO MACHINE UNIT CONTAINING A SHAFT, WHEEL AND BRUSH SEAL AND METHOD OF IMPROVING SEAL | |
| DE502007006392D1 (en) | TURBOMACHINE | |
| CN103994092A (en) | Centrifugal blade pump type sealing structure of turbine supercharger | |
| CN204419679U (en) | Centrifugal compressor stops whirlpool seal ring | |
| RU131814U1 (en) | TURBOMETER RADIAL GAP CELL SEAL | |
| CN205001110U (en) | Be applied to nothing wearing and tearing seal assembly of hydraulic turbine | |
| CN204921053U (en) | When double -deck comb tooth in clearance of obturaging structure of obturaging | |
| CN203321669U (en) | Turbocharger intermediate | |
| CN202520958U (en) | Gas sealing system for hydrogenerator | |
| CN200985803Y (en) | Active blade integral enclosing belt radial packing teeth used for steam turbine high pressure through flow | |
| CN2859108Y (en) | Separate spiral labyrinth sealing device | |
| CN215927476U (en) | Active vapor seal structure | |
| CN204663591U (en) | A kind of Turbine Steam seal structure | |
| CN201424967Y (en) | Backpressure steam turbine | |
| CN100572863C (en) | The manufacture method of labyrinth seal | |
| CN105526161A (en) | Sealed vane pump | |
| CN202065014U (en) | Steam seal structure of 200 MW steam turbine | |
| CN202417694U (en) | Turbocharger middle body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: GUODIAN LONGYUAN ENERGY SAVING TECHNOLOGY CO., LTD. Assignor: Beijing Longwei Power Generation Technology Co.,Ltd. Contract record no.: 2013990000642 Denomination of utility model: Improved rotor sealing structure of improved 300 MW steam turbine Granted publication date: 20111123 License type: Exclusive License Record date: 20130930 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111123 |