CN202417615U - High-efficiency transverse tooth steam seal - Google Patents
High-efficiency transverse tooth steam seal Download PDFInfo
- Publication number
- CN202417615U CN202417615U CN2012200096829U CN201220009682U CN202417615U CN 202417615 U CN202417615 U CN 202417615U CN 2012200096829 U CN2012200096829 U CN 2012200096829U CN 201220009682 U CN201220009682 U CN 201220009682U CN 202417615 U CN202417615 U CN 202417615U
- Authority
- CN
- China
- Prior art keywords
- steam
- ring body
- steam seal
- carbon ring
- racks
- 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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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model belongs to the field of steam turbine sealing devices and particularly relates to a high-efficiency transverse tooth steam seal comprising a steam seal ring body sleeved on a main shaft, wherein racks are distributed at the inner side face of the steam seal ring body; transverse teeth are arranged on the racks; a carbon ring is arranged between the steam seal ring body and the main shaft; a groove is arranged at the periphery of the carbon ring; and a pressure spring is arranged in the groove. The high-efficiency transverse tooth steam seal disclosed by the utility model has the beneficial effects that: the racks are arranged at the inner side of the steam seal ring body and the transverse teeth are arranged on the racks to ensure that the structure is simple and compact and when steam leaks, transverse teeth form a maze structure, a frictional damping effect is produced on the steam flow, the steam kinetic energy is decreased and each time the steam passes through the transverse teeth, the pressure is reduced and the leakage is decreased; and the arranged carbon ring is capable of playing a sealing role and increasing the sealing effect.
Description
Technical field
The utility model relates to a kind of efficient contrate packing, belongs to steam turbine seal arrangement field.
Background technique
At the two ends of the high voltage terminal or the high intermediate pressure cylinder of steam turbine, steam can reduce unit efficiency to external leakage; And the steam consumption of increase steam turbine, reducing working efficiency, traditional packing adopts stage teeth labyrinth seal or flat tooth optical axis axle envelope usually; But above sealing configuration does not have seal area, poor sealing performance.
The model utility content
The technical problem that the utility model will solve is: provide a kind of simple and compact for structure, the efficient contrate packing of good sealing effect.
The utility model is that the technological scheme that its technical problem of solution is adopted is: described efficient contrate packing; Comprise the labyrinth ring body that is sleeved on the main shaft; It is characterized in that: the inner side surface of labyrinth ring body is distributed with tooth bar, is provided with contrate on the tooth bar, between labyrinth ring body and the main shaft carbon ring is set; The periphery of carbon ring is provided with groove, and holddown spring is installed in the groove.
Because labyrinth ring body inboard is provided with on tooth bar and the tooth bar and can processes contrate; Can play the steam that goes out from the steam turbine internal leakage and stop and hypotensive effect; Reduce leakage rate, between labyrinth ring body and the main shaft carbon ring is set, can closely contact through the holddown spring that is arranged on the carbon ring periphery between carbon ring and the main shaft; Form seal area, play seal action.
The internal surface of described carbon ring is made as smooth minute surface.Minute surface can be processed into through rolling tools in the surface that carbon ring contacts with main shaft, and the surface is extremely smooth, reduces surface friction drag, thereby reduces the wearing and tearing of carbon ring, has guaranteed the life-span of carbon ring, thereby improves the working life of packing.
The beneficial effect of the utility model is:
Tooth bar that labyrinth ring body inboard is provided with and the contrate on the tooth bar, simple and compact for structure, during steam leakage, the labyrinth that contrate forms produces the frictional damping effect to vapor stream, reduces steam kinetic energy, one contrate of the every process of steam, pressure all reduces, and reduces to leak; The carbon ring that is provided with can play seal action, improves 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, holddown spring 2, carbon ring 3, labyrinth ring body 4, contrate 5, tooth bar 6, 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 efficient contrate packing of the utility model comprises the labyrinth ring body 3 that is sleeved on the main shaft 6; The inner side surface of labyrinth ring body 3 is distributed with tooth bar 5; Be provided with contrate 4 on the tooth bar 5, between labyrinth ring body 3 and the main shaft 6 carbon ring 2 be set, the periphery of carbon ring 2 is provided with groove; Holddown spring 1 is installed in the groove, and the internal surface of carbon ring 2 is made as smooth minute surface.
During work, a plurality of contrates 4 formation labyrinths on the labyrinth ring body 3, the steam generation frictional damping effect to the steam turbine internal leakage reduces steam kinetic energy, one contrate of the every process of steam 4, pressure all reduces, and plays throttling action, reduces to leak; Carbon ring 2 can be divided into two, closely contacts with main shaft 6 through holddown spring 1, forms gapless sealing strip, reaches sealing purpose.
Claims (2)
1. efficient contrate packing; Comprise the labyrinth ring body that is sleeved on the main shaft; It is characterized in that: the inner side surface of labyrinth ring body is distributed with tooth bar, is provided with contrate on the tooth bar, between labyrinth ring body and the main shaft carbon ring is set; The periphery of carbon ring is provided with groove, and holddown spring is installed in the groove.
2. efficient contrate packing according to claim 1, it is characterized in that: the internal surface of carbon ring is made as smooth minute surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200096829U CN202417615U (en) | 2012-01-11 | 2012-01-11 | High-efficiency transverse tooth steam seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200096829U CN202417615U (en) | 2012-01-11 | 2012-01-11 | High-efficiency transverse tooth steam seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417615U true CN202417615U (en) | 2012-09-05 |
Family
ID=46742388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200096829U Expired - Fee Related CN202417615U (en) | 2012-01-11 | 2012-01-11 | High-efficiency transverse tooth steam seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417615U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2513061C1 (en) * | 2013-01-09 | 2014-04-20 | Открытое акционерное общество "Авиадвигатель" | Turbo machine labyrinth seal |
| RU2513466C1 (en) * | 2013-01-09 | 2014-04-20 | Открытое акционерное общество "Авиадвигатель" | Turbine labyrinth seal |
| CN114346388A (en) * | 2021-12-02 | 2022-04-15 | 华南理工大学 | Lockhole effect tungsten electrode argon arc welding protection tail cover |
-
2012
- 2012-01-11 CN CN2012200096829U patent/CN202417615U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2513061C1 (en) * | 2013-01-09 | 2014-04-20 | Открытое акционерное общество "Авиадвигатель" | Turbo machine labyrinth seal |
| RU2513466C1 (en) * | 2013-01-09 | 2014-04-20 | Открытое акционерное общество "Авиадвигатель" | Turbine labyrinth seal |
| CN114346388A (en) * | 2021-12-02 | 2022-04-15 | 华南理工大学 | Lockhole effect tungsten electrode argon arc welding protection tail cover |
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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: 20190111 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |