CN202417617U - Radial labyrinth gland of turbine - Google Patents
Radial labyrinth gland of turbine Download PDFInfo
- Publication number
- CN202417617U CN202417617U CN2012200096848U CN201220009684U CN202417617U CN 202417617 U CN202417617 U CN 202417617U CN 2012200096848 U CN2012200096848 U CN 2012200096848U CN 201220009684 U CN201220009684 U CN 201220009684U CN 202417617 U CN202417617 U CN 202417617U
- Authority
- CN
- China
- Prior art keywords
- gland
- labyrinth
- main shaft
- ring
- labyrinth ring
- 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 - Fee Related
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model belongs to the field of sealing devices of turbines and in particular relates to a radial labyrinth gland of a turbine. The radial labyrinth gland comprises a gland body, wherein gland rings are distributed along the axial direction of the inner side face of the gland body; gland ring teeth are uniformly arranged on two end faces of each gland ring; a main shaft gland ring is arranged between each two gland rings; main shaft gland ring teeth are arranged on the two end faces of the main shaft gland ring and respectively opposite to clearances between the gland ring teeth; and the main shaft gland rings are arranged on a main shaft of the turbine. The radial labyrinth gland of the turbine has the advantage of simple and compact structure, and a sealing effect can be effectively improved by a labyrinth channel which is formed by the gland ring teeth and the main shaft gland ring teeth; meanwhile, the number of the gland bodies can be decreased, and the axial length of the gland is reduced; and by adoption of an adjusting pad and a washer, the gland rings can be tightly matched with the main shaft gland rings, the main shaft and the gland body respectively, and the sealing effect is improved.
Description
Technical field
The utility model relates to a kind of steam turbine radial labyrinth gland, belongs to steam turbine seal arrangement field.
Background technique
Steam turbine set sealing system in the past is in order to reach better sealing effect; Draw gas the hole except the centre adds several roads, mostly is to adopt the number that increases packing, increases the packing number and can cause axle envelope length lengthening; The bearing shell spacing strengthens before and after causing; The length of unit increases, and then causes the volume of unit to increase, and cost also increases thereupon.
The model utility content
The technical problem that the utility model will solve is: provide a kind of simple in structure, volume is little and can improve the steam turbine radial labyrinth gland of sealing effect.
The utility model is that the technological scheme that its technical problem of solution is adopted is: described steam turbine radial labyrinth gland; Comprise labyrinth casing; It is characterized in that: axial distribution has labyrinth ring on the labyrinth casing inner side surface, and the labyrinth ring tooth evenly is set on the both ends of the surface of each labyrinth ring, and the main shaft labyrinth ring is set between two labyrinth rings; The main shaft labyrinth ring is installed on the main shaft of steam turbine, and the gap on the both ends of the surface of main shaft labyrinth ring between the corresponding respectively labyrinth ring tooth is provided with main shaft labyrinth ring tooth.
Labyrinth ring tooth on the labyrinth ring and the main shaft labyrinth ring tooth on the main shaft labyrinth ring form mazy passage, can effectively stop the interior water vapor of steam turbine to external leakage, and the said structure compact can effectively reduce the length of axle envelope, and improves sealing effect.
Described labyrinth ring is fixed on the inboard of labyrinth casing through straight pin, and between the adjacent labyrinth ring, labyrinth ring and labyrinth casing joint be provided with spacer respectively, spacer connects labyrinth casing, and labyrinth ring and main shaft joint are provided with packing ring, and packing ring is installed on the main shaft.The setting of spacer and packing ring is convenient to regulate between the labyrinth ring, between labyrinth ring and the labyrinth casing and the gap between labyrinth ring and the main shaft, makes it assembling firmly, cooperates closely, improves sealing effect.
The beneficial effect of the utility model is:
Simple and compact for structure, the mazy passage by labyrinth ring tooth and main shaft labyrinth ring tooth form can effectively improve sealing effect; Simultaneously; Can reduce the number of labyrinth casing, and then shorten the packing axial length, spacer and packing ring are set; Labyrinth ring is cooperated closely with main shaft labyrinth ring, main shaft and labyrinth casing respectively, improve sealing effect.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structure enlarged diagram at A position among Fig. 1.
Among the figure: 1, spacer I 2, labyrinth casing 3, straight pin 4, labyrinth ring 5, spacer II 6, packing ring 7, main shaft labyrinth ring 8, main shaft.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be further described:
Like Fig. 1～shown in Figure 2, the described steam turbine radial labyrinth gland of the utility model comprises labyrinth casing 2; Axial distribution has labyrinth ring 4 on labyrinth casing 2 inner side surfaces, and labyrinth ring 4 is fixed on the labyrinth casing 2 through straight pin 3, and the labyrinth ring tooth evenly is set on the both ends of the surface of each labyrinth ring 4; Between two labyrinth rings 4 main shaft labyrinth ring 7 is set; Gap on the both ends of the surface of main shaft labyrinth ring 7 between the corresponding respectively labyrinth ring tooth is provided with main shaft labyrinth ring tooth, and main shaft labyrinth ring 7 is installed on the main shaft 8 of steam turbine, between the adjacent labyrinth ring 4 spacer I 1 is set; Labyrinth ring 4 is provided with spacer II5 with labyrinth casing 2 joints, and labyrinth ring 4 is provided with packing ring 6 with main shaft 8 joints.
During work; Labyrinth ring 4, main shaft labyrinth ring 7, spacer I 1 and spacer II5 are installed respectively; And adjust the gap, the water vapor in the steam turbine is when external leakage, through the mazy passage of labyrinth ring tooth and main shaft labyrinth ring tooth composition; Gas pressure reduces gradually, thereby stops water vapor to external leakage.
Claims (2)
1. steam turbine radial labyrinth gland; Comprise labyrinth casing; It is characterized in that: axial distribution has labyrinth ring on the labyrinth casing inner side surface, and the labyrinth ring tooth evenly is set on the both ends of the surface of each labyrinth ring, and the main shaft labyrinth ring is set between two labyrinth rings; The main shaft labyrinth ring is installed on the main shaft of steam turbine, and the gap on the both ends of the surface of main shaft labyrinth ring between the corresponding respectively labyrinth ring tooth is provided with main shaft labyrinth ring tooth.
2. steam turbine radial labyrinth gland according to claim 1; It is characterized in that: labyrinth ring is fixed on the inboard of labyrinth casing through straight pin; Between the adjacent labyrinth ring, labyrinth ring and labyrinth casing joint be provided with spacer respectively; Spacer connects labyrinth casing, and labyrinth ring and main shaft joint are provided with packing ring, and packing ring is installed on the main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200096848U CN202417617U (en) | 2012-01-11 | 2012-01-11 | Radial labyrinth gland of turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200096848U CN202417617U (en) | 2012-01-11 | 2012-01-11 | Radial labyrinth gland of turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417617U true CN202417617U (en) | 2012-09-05 |
Family
ID=46742390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200096848U Expired - Fee Related CN202417617U (en) | 2012-01-11 | 2012-01-11 | Radial labyrinth gland of turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417617U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277146A (en) * | 2013-05-15 | 2013-09-04 | 山东青能动力股份有限公司 | Symmetrical lateral tooth steam sealing structure |
| CN103899758A (en) * | 2014-03-04 | 2014-07-02 | 哈尔滨工程大学 | T-shaped staggered-type labyrinth seal capable of eliminating rotor exciting force |
| 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 |
-
2012
- 2012-01-11 CN CN2012200096848U patent/CN202417617U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277146A (en) * | 2013-05-15 | 2013-09-04 | 山东青能动力股份有限公司 | Symmetrical lateral tooth steam sealing structure |
| CN103899758A (en) * | 2014-03-04 | 2014-07-02 | 哈尔滨工程大学 | T-shaped staggered-type labyrinth seal capable of eliminating rotor exciting force |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20160111 |