CN202391480U - Bidirectional-seal vapor seal - Google Patents
Bidirectional-seal vapor seal Download PDFInfo
- Publication number
- CN202391480U CN202391480U CN2012200371718U CN201220037171U CN202391480U CN 202391480 U CN202391480 U CN 202391480U CN 2012200371718 U CN2012200371718 U CN 2012200371718U CN 201220037171 U CN201220037171 U CN 201220037171U CN 202391480 U CN202391480 U CN 202391480U
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- seal
- axial
- seal ring
- sealing ring
- sealing
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- Expired - Fee Related
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Abstract
The utility model discloses a bidirectional-seal vapor seal which comprises low teeth, high teeth, a rotating shaft, a sealing ring, an axial spring, a shell, a spring piece and an axial sealing teeth part. The bidirectional-seal vapor seal is characterized in that: the spring piece is arranged at the lower end of the shell; the sealing ring is arranged at the lower end of the spring piece; the axial spring is arranged at the limitation position of the lateral surface of an air inlet between the left side of the sealing ring and the shell; the axial sealing teeth are arranged at the limitation position of the lateral surface of an air outlet between the right side of the sealing ring and the shell; the rotating shaft is arranged below the sealing ring; the low teeth and the high teeth are arranged between the sealing ring and the rotating shaft. The seal vapor seal has a simple structure, play the roles of radial sealing and axial sealing, and can effectively prevent loss of vapor, so that the aims of improving the working efficiency of steam turbines and the enterprise production benefit can be achieved.
Description
Technical field
The utility model relates to a kind of two way sealed packing, relates in particular to the packing that is used for sealed steam on a kind of power plant steam turbine, belongs to steam turbine sealed steam device technique field.
Background technique
The packing of steam turbine is a vitals of sealed steam in the steam turbine, and the quality of steam tight effect is the key factor that influences the steam turbine heating value in the steam turbine.Because steam turbine is when work, a part is moved, and a part is fixed, and therefore, in the steam turbine working procedure, the joining place of dynamic and static part can produce the slit, thereby causes steam to leak from the slit.The pressure size of steam not only has influence on the heating efficiency of steam turbine, and can have influence on the production economic benefit.At present; Employed seal arrangement in traditional steam turbine, what mainly adopt is labyrinth seal structure, labyrinth seal structure is to utilize the resistance of high and low toothing as vapor stream; When vapor stream is flowed through high and low tooth seal arrangement; Owing to receive stopping of high and low tooth seal arrangement, its kinetic energy, vapor stream flow velocity consume minimizing gradually, thereby reach the effect of sealing.But this labyrinth seal structure is only paid attention to the radial seal between seal ring and the rotatingshaft; And ignored the axial seal between seal ring and the housing; Can not well play the effect of sealed steam; Steam still can leak out a part, has influence on the productivity effect of turbine work efficient and enterprise.
The model utility content
The purpose of the utility model is for a kind of two way sealed packing is provided, and the sealing packing is provided with the high and low toothing of mazy type between seal ring and rotatingshaft, thereby has increased the Radial Flow distance and the resistance of vapor stream, plays the effect of radial seal; The sealing packing is provided with the axial seal tooth at spacing place, the side of seal ring and shell air inlet; Can increase axial distance of flow of vapor stream and resistance like this; Effectively reduce self kinetic energy of vapor stream, reduce the flow velocity of vapor stream, thereby play the effect of axial seal; Because the sealing packing is provided with axle spring at the spacing place, side of seal ring and housing air outlet, under the effect of axle spring, seal ring closely contacts with housing, can stop the outflow of steam; The sealing gland seal structure is simple, can play the effect of radial and axial two way sealed, can effectively stop the loss of steam, thereby reaches the purpose of the productivity effect that improves steam turbine working efficiency and enterprise.
In order to achieve the above object, the utility model is realized through following technological means.
A kind of two way sealed packing; It comprises low tooth, high tooth, rotatingshaft, seal ring, axle spring, housing, spring sheet, axial seal toothed portion; It is characterized in that: the lower end at housing is provided with spring sheet; Lower end at spring sheet is provided with seal ring, is provided with axle spring in the left side of seal ring and the spacing place, side of the suction port between the housing, is provided with the axial seal tooth on the right side of seal ring and the spacing place, side of the air outlet between the housing; Below seal ring, be provided with rotatingshaft, between seal ring and rotatingshaft, be provided with low tooth and high tooth.
The utility model mainly has following beneficial effect:
1, the sealing packing is provided with the high and low toothing of mazy type between seal ring and rotatingshaft, thereby has increased the Radial Flow distance and the resistance of vapor stream, plays the effect of radial seal;
2, the sealing packing is provided with the axial seal tooth at spacing place, the side of seal ring and shell air inlet; Can increase axial distance of flow of vapor stream and resistance like this; Effectively reduce self kinetic energy of vapor stream, reduce the flow velocity of vapor stream, thereby play the effect of axial seal;
3, because the sealing packing is provided with axle spring at the spacing place, side of seal ring and housing air outlet, under the effect of axle spring, seal ring closely contacts with housing, can stop the outflow of steam;
4, the sealing gland seal structure is simple, can play the effect of radial and axial two way sealed, can effectively stop the loss of steam, thereby reaches the purpose of the productivity effect that improves steam turbine working efficiency and enterprise.
Description of drawings
Accompanying drawing is the utility model two way sealed packing plane structure schematic representation;
As shown in the figure, various piece is represented by following Arabic numerals among the figure:
1. low tooth, 2. high tooth, 3. rotatingshaft, 4. seal ring, 5. axle spring, 6. housing, 7. spring sheet, 8. axial seal tooth.
Below in conjunction with embodiment and Figure of description the utility model is done further to specify:
Embodiment
Embodiment
As shown in the figure, a kind of two way sealed packing, it comprises low tooth 1, high tooth 2, rotatingshaft 3, seal ring 4, axle spring 5, housing 6, spring sheet 7, axial seal tooth 8 parts.
As shown in the figure; Be provided with spring sheet 7 in the lower end of housing 6; Be provided with seal ring 4 in the lower end of spring sheet 7, be provided with axle spring 5, be provided with axial seal tooth 8 on the right side of seal ring 4 and the spacing place, side of the air outlet between the housing 6 in the left side of seal ring 4 and the spacing place, side of the suction port between the housing 6; Below seal ring 4, be provided with rotatingshaft 3, between seal ring 4 and rotatingshaft 3, be provided with low tooth 1 and high tooth 2.
Claims (1)
1. two way sealed packing; It comprises low tooth (1), high tooth (2), rotatingshaft (3), seal ring (4), axle spring (5), housing (6), spring sheet (7), axial seal tooth (8) part; It is characterized in that: be provided with spring sheet (7) in the lower end of housing (6); Be provided with seal ring (4) in the lower end of spring sheet (7); Be provided with axle spring (5) in the left side of seal ring (4) and the spacing place, side of the suction port between the housing (6); Be provided with axial seal tooth (8) on the right side of seal ring (4) and the spacing place, side of the air outlet between the housing (6), below seal ring (4), be provided with rotatingshaft (3), between seal ring (4) and rotatingshaft (3), be provided with low tooth (1) and high tooth (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200371718U CN202391480U (en) | 2012-01-05 | 2012-01-05 | Bidirectional-seal vapor seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200371718U CN202391480U (en) | 2012-01-05 | 2012-01-05 | Bidirectional-seal vapor seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391480U true CN202391480U (en) | 2012-08-22 |
Family
ID=46666410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200371718U Expired - Fee Related CN202391480U (en) | 2012-01-05 | 2012-01-05 | Bidirectional-seal vapor seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391480U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982247A (en) * | 2014-05-21 | 2014-08-13 | 南京博沃科技发展有限公司 | Self-fine-adjusting steam seal and mounting and debugging method thereof |
| CN103982244A (en) * | 2014-05-21 | 2014-08-13 | 南京博沃科技发展有限公司 | Blade-retractable steam seal and mounting and debugging method thereof |
| CN104819015A (en) * | 2015-04-03 | 2015-08-05 | 东南大学 | Self-adaptive dynamic pressure gas film composite blade tip sealing device and sealing method |
| CN110036182A (en) * | 2016-12-09 | 2019-07-19 | 通用电器技术有限公司 | Turbine, corresponding steamturbine and operating method |
-
2012
- 2012-01-05 CN CN2012200371718U patent/CN202391480U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982247A (en) * | 2014-05-21 | 2014-08-13 | 南京博沃科技发展有限公司 | Self-fine-adjusting steam seal and mounting and debugging method thereof |
| CN103982244A (en) * | 2014-05-21 | 2014-08-13 | 南京博沃科技发展有限公司 | Blade-retractable steam seal and mounting and debugging method thereof |
| CN103982247B (en) * | 2014-05-21 | 2016-04-06 | 南京博沃科技发展有限公司 | A kind of self trim packing and Installation and Debugging method thereof |
| CN103982244B (en) * | 2014-05-21 | 2016-04-13 | 南京博沃科技发展有限公司 | Can folding and unfolding blade type packing and Installation and Debugging method thereof |
| CN104819015A (en) * | 2015-04-03 | 2015-08-05 | 东南大学 | Self-adaptive dynamic pressure gas film composite blade tip sealing device and sealing method |
| CN110036182A (en) * | 2016-12-09 | 2019-07-19 | 通用电器技术有限公司 | Turbine, corresponding steamturbine and operating method |
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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: 20120822 Termination date: 20150105 |
|
| EXPY | Termination of patent right or utility model |