CN203161301U - Wheel axle sealing device for steam turbine - Google Patents
Wheel axle sealing device for steam turbine Download PDFInfo
- Publication number
- CN203161301U CN203161301U CN 201320121986 CN201320121986U CN203161301U CN 203161301 U CN203161301 U CN 203161301U CN 201320121986 CN201320121986 CN 201320121986 CN 201320121986 U CN201320121986 U CN 201320121986U CN 203161301 U CN203161301 U CN 203161301U
- Authority
- CN
- China
- Prior art keywords
- steam turbine
- sealing gasket
- steam
- sealing gland
- wheel axle
- 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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Abstract
The utility model relates to a wheel axle sealing device for a steam turbine. The device comprises a circular sealing gasket (2), wherein the wheel axle is sleeved with the circular sealing gasket. The device is characterized in that a gas seal space (3) is formed inside the circular sealing gasket (2); a gas hole (4) is formed in one side of the sealing gasket (2) and communicated with the gas seal space (3); and the device also comprises a gas seal connection pipe (5) which is connected with the gas hole (4) and provides high-pressure gas. The device has the benefits as follows: the sealing gasket with the gas seal space is arranged on the wheel axle of the steam turbine, and the gas seal space is communicated with an cold air chamber of an engine through the gas seal pipe, so that high-pressure gas prevents steam from intruding into an oil chamber, the steam is prevented from being condensed into water and mixed into turbine oil to destroy grease, thereby increasing security coefficient of the steam turbine and reducing the economic loss.
Description
Technical field
The utility model relates to the seal arrangement of small-sized air-cooled steam turbine generator, especially a kind of steam turbine wheel shaft sealer.
Background technique
At present, the sealing system of small-sized thermal power plant steam turbine is used oil catch formula gasket structure mostly, and the axle journal that runs up that is in operation can wear and tear to the oil catch sealing gasket, outwards causes or inwardly leaks vapour (gas).Owing to be little negative pressure in the bearing shell grease chamber, steam just enters by oil catch and condenses into water behind the grease chamber and sneak in the turbine oil.The quality of steam turbine turbine oil is to influence one of the steam turbine set safety and economic operation very key factor, and especially the moisture meeting of turbine oil causes grease emulsifying rotten, can cause speed control system corrosion bite, causes load swing; The moisture meeting of turbine oil is that the lubricant oil quality descends, and influences the formation of oil film, can burn bearing shell when serious, thereby cause very big economic loss.
The model utility content
The purpose of this utility model provides a kind of steam that stops and invades the grease chamber, prevents that steam from condensing into water and sneaking into the steam turbine wheel shaft sealer that turbine oil destroys grease.
In order to finish above-mentioned purpose, the technical solution adopted in the utility model is:
A kind of steam turbine wheel shaft sealer comprises the Gask-O-Seal that is sleeved on the wheel shaft, and the inside of described sealing gasket is provided with the sealing gland space, and a side of sealing gasket is provided with pore and communicates with the sealing gland space, also comprises the sealing gland adapter that pressurized gas are provided that links to each other with pore.
Described sealing gland is taken over and is communicated with the cold air chamber of generator.
Be provided with valve between described sealing gland adapter and the cold air chamber.
The beneficial effects of the utility model are: the sealing gasket that is provided with the sealing gland space at the steam turbine wheel shaft, the sealing gland space is taken over by sealing gland with the cold air chamber of generator and is communicated, make pressurized gas stop steam intrusion grease chamber, prevented that steam from condensing into water and sneaking into turbine oil destruction grease, improve the safety coefficient of steam turbine, reduced economic loss.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is assembling schematic representation of the present utility model.
Among the figure, 1, wheel shaft, 2, sealing gasket, 3, the sealing gland space, 4, pore, 5, sealing gland takes over.6, cold air chamber, 7, valve.
Embodiment
The utility model is a kind of steam turbine wheel shaft sealer, be provided with the sealing gasket in sealing gland space at the steam turbine wheel shaft, the sealing gland space is taken over by sealing gland with the cold air chamber of generator and is communicated, make pressurized gas stop steam intrusion grease chamber, prevented that steam from condensing into water and sneaking into turbine oil destruction grease, improve the safety coefficient of steam turbine, reduced economic loss.
Below in conjunction with accompanying drawing the utility model is described further.
Specific embodiment, as shown in Figure 1 and Figure 2, a kind of steam turbine wheel shaft sealer, comprise the Gask-O-Seal 2 that is sleeved on the steam turbine wheel shaft 1, the inside of described sealing gasket 2 is provided with sealing gland space 3, and a side of sealing gasket 2 is provided with pore 4 and communicates with sealing gland space 3, also comprises the sealing gland adapter 5 that pressurized gas are provided that links to each other with pore 4, sealing gland is taken over 5 and is communicated with the cold air chamber 6 of generator, is provided with valve 7 between sealing gland adapter 5 and cold air chamber 6.When generator rotates, pressurized gas in the cold air chamber 6 are taken over 5 from sealing gland and are entered in the pore 4 and sealing gland space 3 of sealing gasket 2, pressurized gas form the sealing gland effect, can stop steam intrusion grease chamber effectively, prevent that steam from condensing into water and sneaking into turbine oil destruction grease, improve the safety coefficient of steam turbine, reduced economic loss.
Claims (3)
1. a steam turbine is taken turns shaft sealer, comprise the Gask-O-Seal (2) that is sleeved on the wheel shaft (1), it is characterized in that: the inside of described sealing gasket (2) is provided with sealing gland space (3), one side of sealing gasket (2) is provided with pore (4) and communicates with sealing gland space (3), also comprises the sealing gland adapter (5) that pressurized gas are provided that links to each other with pore (4).
2. a kind of steam turbine according to claim 1 is taken turns shaft sealer, it is characterized in that: described sealing gland is taken over (5) and is communicated with the cold air chamber (6) of generator.
3. a kind of steam turbine wheel shaft sealer according to claim 2 is characterized in that: be provided with valve (7) between described sealing gland adapter (5) and the cold air chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121986 CN203161301U (en) | 2013-03-18 | 2013-03-18 | Wheel axle sealing device for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320121986 CN203161301U (en) | 2013-03-18 | 2013-03-18 | Wheel axle sealing device for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161301U true CN203161301U (en) | 2013-08-28 |
Family
ID=49022493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320121986 Expired - Fee Related CN203161301U (en) | 2013-03-18 | 2013-03-18 | Wheel axle sealing device for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356880A (en) * | 2018-12-10 | 2019-02-19 | 济南风机厂有限责任公司 | Axle envelope and blower |
-
2013
- 2013-03-18 CN CN 201320121986 patent/CN203161301U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356880A (en) * | 2018-12-10 | 2019-02-19 | 济南风机厂有限责任公司 | Axle envelope and blower |
| CN109356880B (en) * | 2018-12-10 | 2024-04-02 | 济南风机厂有限责任公司 | Shaft seal and fan |
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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: 20130828 Termination date: 20170318 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |