CN206293995U - A kind of steam turbine generator complete trails sealing structure - Google Patents
A kind of steam turbine generator complete trails sealing structure Download PDFInfo
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- CN206293995U CN206293995U CN201621372158.2U CN201621372158U CN206293995U CN 206293995 U CN206293995 U CN 206293995U CN 201621372158 U CN201621372158 U CN 201621372158U CN 206293995 U CN206293995 U CN 206293995U
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- sealing
- sealing structure
- steam turbine
- turbine generator
- seal receptacle
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Abstract
The utility model provides a kind of steam turbine generator complete trails sealing structure, including transition rings (1), sealing plate (5), end cap (8), seal receptacle (11) and rotating shaft (12) and sealing flap (13), the seal receptacle (11), sealing flap (13) form sealing structure with rotating shaft (12) respectively, sealing structure is formed between the seal receptacle (11) and sealing flap (13), the transition rings (1) form sealing structure with end cap (8), seal receptacle (11) respectively by sealing plate (5).The utility model can make steam turbine generator oil seal structure that the sealing structure of complete trails closing is formed at horizontal joint surface, effectively prevent hydrogen hydrogen side (higher-pressure region) leakage from generator from flowing to machine outside (low-pressure area), sealing reliability when making steam turbine generator work at horizontal joint surface is greatly improved, with the outstanding advantages such as simple structure, compact, easy to assembly.
Description
Technical field
The utility model is related to steam turbine generator technical field of sealing technology, close more particularly, to a kind of steam turbine generator complete trails
Seal structure.
Background technology
Mainly using single current ring, double-current ring or three stream ring sealing structures, this sealing structure exists current steam turbine generator
The defect of sealed pathway not exclusively closing is primarily present in the steam turbine generator course of work, especially in its horizontal joint close face
Position, it is impossible to fully ensure that the effective obstruct between the interior hydrogen side (higher-pressure region) and machine outside (low-pressure area) of steam turbine generator, make portion
Hydrogen is divided to be able to flow to machine outside (low-pressure area) from the interior hydrogen side (higher-pressure region) of steam turbine generator, so as to cause steam turbine generator work
As when there is the defects such as gas leakage, oil leak, especially at horizontal joint surface, oil leakage phenomenon also relatively frequently occur.And once send out
During the defects such as raw gas leakage, oil leak, the benefit hydrogen amount that will result directly in steam turbine generator increases.Because hydrogen is most light gas, its
Permeability and diffusivity are very strong, with being continuously increased for hydrogen gas leakage amount, will have influence on exerting oneself for steam turbine generator, or even draw
Blast is played, so as to cause security incident.
Utility model content
The technical problems to be solved in the utility model is：For the problem that prior art is present, there is provided a kind of turbine generator
Machine complete trails sealing structure, improves the sealing reliability at horizontal joint surface when steam turbine generator works.
The technical problems to be solved in the utility model is realized using following technical scheme：A kind of steam turbine generator complete trails
Sealing structure, including transition rings, sealing plate, end cap, seal receptacle and rotating shaft and sealing flap, the seal receptacle, sealing flap
Sealing structure is formed with rotating shaft respectively, sealing structure is formed between the seal receptacle and sealing flap, the transition rings are by close
Shrouding forms sealing structure with end cap, seal receptacle respectively.
Preferably, also including the first sealing strip, mounting groove is opened up on seal receptacle, the first sealing strip interlocking is in sealing
Sealing structure is formed in mounting groove on seat, and between first sealing strip and sealing plate.
Preferably, the main oil gallery being mutually communicated is set between the transition rings and seal receptacle, is opened up in transition rings and master
First oil duct that oil duct is mutually communicated, forms sealing structure, and the master between first sealing strip and first oil duct
Seal Oil is filled in oil duct, first oil duct.
Preferably, open up the first dashpot in the transition rings, first dashpot respectively with main oil gallery, first oil
Road is mutually communicated.
Preferably, the first described dashpot is bar-shaped trough, and its two ends forms circular arc transition part respectively.
Preferably, also including the second sealing strip, mounting groove is opened up on end cap, the second sealing strip interlocking is on end cap
Mounting groove in, and between second sealing strip and sealing plate form sealing structure.
Preferably, the main oil gallery being mutually communicated is set between the transition rings and seal receptacle, is opened up in transition rings and master
Second oil duct that oil duct is mutually communicated, forms sealing structure, and the master between second sealing strip and second oil duct
Seal Oil is filled in oil duct, second oil duct.
Preferably, open up the second dashpot in the transition rings, second dashpot respectively with main oil gallery, second oil
Road is mutually communicated.
Preferably, the second described dashpot is circular trough.
Preferably, the cross sectional shape flare of the first described sealing strip and/or the second sealing strip.
Compared with prior art, the beneficial effects of the utility model are：Due to seal receptacle, sealing flap respectively with rotating shaft shape
Into sealing structure, sealing structure is formed between seal receptacle and sealing flap, and transition rings by sealing plate respectively with end cap, sealing
Seat forms sealing structure, so that steam turbine generator forms the sealing structure of complete trails closing at horizontal joint surface, can
The obstruct between the air on the outside of the hydrogen and steam turbine generator on the inside of steam turbine generator is fully ensured that, hydrogen is effectively prevent
Gas, Seal Oil etc. from generator hydrogen side (higher-pressure region) leakage flow to machine outside (low-pressure area), when steam turbine generator is worked
Sealing reliability at horizontal joint surface is greatly improved.
Brief description of the drawings
Fig. 1 is a kind of sectional view of steam turbine generator complete trails sealing structure of the utility model.
Marked in figure：1- transition rings, first oil duct of 2-, the dashpots of 3- second, second oil duct of 4-, 5- sealing plates, 6-
Second sealing strip, the sealing strips of 7- first, 8- end caps, 9- first level joint surface bedding-ins region, 10- main oil gallerys, 11- seal receptacles,
12- rotating shafts, 13- sealing flaps, 14- host buffer grooves, the horizontal joint surface bedding-in regions of 15- second, the dashpots of 16- first, 17- is close
Feng Wa.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with the accompanying drawings and specifically
Embodiment is described in detail to the utility model.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model, is not used to limit the utility model.
Steam turbine generator complete trails sealing structure as shown in Figure 1, including transition rings 1, sealing plate 5, end cap 8, seal receptacle
11st, rotating shaft 12 and sealing flap 13 and sealing bearing bush 17, the sealing plate 5 are preferably rubber slab, described seal receptacle 11, sealing
Flap 13, sealing bearing bush 17 form sealing structure with rotating shaft 12 respectively, by close between described seal receptacle 11 and sealing flap 13
Envelope watt 17 forms sealing structure, and the transition rings 1 form sealing structure with end cap 8, seal receptacle 11 respectively by sealing plate 5, its
In transition rings 1 and end cap 8 between, fixation can be respectively bolted between seal receptacle 11 and transition rings 1, and bolt is worn
Cross sealing plate 5.The inner side of the seal receptacle 11 is interior hydrogen side, and the outside of the transition rings 1 is machine outside, wherein, interior hydrogen side master
If high pressure hydrogen, belong to generator higher-pressure region, and machine outside is air side, belongs to generator low-pressure area.
Further, in order to improve the sealing reliability between transition rings 1 and end cap 8, installation can be opened up on end cap 8
Press-fit in groove, and mounting groove on the end cap 8 and sealing is formed between the second sealing strip 6, and the second sealing strip 6 and sealing plate 5
Structure.The cross sectional shape of second sealing strip 6 is preferably tubaeform, so that the second sealing strip 6 is rabbeted on end cap 8 securely
Mounting groove in.Similarly, in order to improve the sealing reliability between transition rings 1 and seal receptacle 11, can be on seal receptacle 11
Open up mounting groove, and press-fit the first sealing strip 7 in mounting groove on the seal receptacle 11, and the first sealing strip 7 and sealing plate 5 it
Between form sealing structure.The cross sectional shape of first sealing strip 7 is preferably tubaeform, so that the first sealing strip 7 is embedding securely
It is connected in the mounting groove on seal receptacle 11.Described the first sealing strip 7, the second sealing strip 6 is preferably using the rubber strip of annular.
When steam turbine generator works, permeability, the diffusivity of the high pressure hydrogen of its interior hydrogen side are very strong, in order to effectively keep away
The high pressure hydrogen for exempting from hydrogen side in generator leaks to the machine outside of generator low-pressure area, as shown in figure 1, can also be in transition rings 1
The main oil gallery 10 being mutually communicated is set between seal receptacle 11, and is opened up in transition rings 1 and is mutually communicated with main oil gallery 10 respectively
First oil duct, 2, second oil duct 4, corresponding openings are opened up on sealing plate 5, so that the first sealing strip 7 and first
Formed between oil duct 2 and form sealing structure between sealing structure, and the second sealing strip 6 and second oil duct 4, main oil gallery 10,
Seal Oil is filled in first oil duct, 2, second oil duct 4.
Further, the first dashpot 16, the second dashpot 3, first dashpot can also be opened up in transition rings 1
16 are mutually communicated with 10, first oil duct 2 of main oil gallery respectively, second dashpot 3 respectively with 10, second oil duct of main oil gallery
4 are mutually communicated.Preferably, first dashpot 16 uses bar-shaped trough, and its two ends forms circular arc transition part respectively；It is preferred that
Ground, second dashpot 3 uses circular trough.In addition, host buffer groove 14 can be opened up on seal receptacle 11, described host buffer
Groove 14 is mutually communicated with main oil gallery 10, and forms sealing structure between the first sealing strip 7 and host buffer groove 14, as shown in Figure 1.Adopt
After such structure design so that " returning " shape oil groove sealing structure is formed between transition rings 1 and seal receptacle 11.By " returning " shape
Oil groove sealing structure is with the insert seal structure formed with seal receptacle 11 by the first sealing strip 7 and by the second sealing strip 6
The insert seal structure formed with end cap 8 is combined, and further enhances steam turbine generator at horizontal joint surface
Complete trails is closed, it is ensured that the obstruct between the air on the outside of hydrogen and steam turbine generator on the inside of steam turbine generator, is effectively prevented
Hydrogen side (higher-pressure region) leakage from generator such as hydrogen, Seal Oil is stopped and has flowed to machine outside (low-pressure area), so that it is guaranteed that steamer is sent out
Sealing reliability during motor work at horizontal joint surface.
Above-mentioned steam turbine generator complete trails sealing structure, can be carried out using following assembly method, specifically,
First, seal receptacle 11 is installed, and makes to form sealing structure between seal receptacle 11 and rotating shaft 12.
Secondly, sealing flap 13 is installed, and sealing flap 13 is formed sealing structure with seal receptacle 11, rotating shaft 12 respectively.
It is to be adhered directly to sealing plate 5 generally next, transition rings 1 are fixedly connected integrally with sealing plate 5
Cross on ring 1.
Finally, transition rings 1 are connected with end cap 8, seal receptacle 11 respectively by attachment bolt, sealing plate 5 respectively with
End cap 8, seal receptacle 11 form sealing structure.
The building block of steam turbine generator complete trails sealing structure of the present utility model is less, and each relevant components part it
Between assembling it is simple, therefore so that the unitary construction of steam turbine generator complete trails sealing structure is relatively easy, compact, and assembling
Convenient, after the assembling in place of each relevant components part, sealing reliability of the steam turbine generator at horizontal joint surface is also able to greatly
Amplitude is improved.In order to further enhance the sealing property of steam turbine generator complete trails sealing structure, it is preferable that the transition rings 1,
End cap 8, seal receptacle 11 before assembly, open up mounting groove on end cap 8, and rabbet the second sealing strip 6 in the mounting groove；Close
Mounting groove is opened up on envelope seat 11, and rabbets the first sealing strip 7 in the mounting groove, in transition rings 1 and the matching part of seal receptacle 11
The main oil gallery 10 being mutually communicated is opened up, first oil duct being mutually communicated with main oil gallery 10 respectively is also opened up in the transition rings 1
2nd, second oil duct 4；In addition, processing the second horizontal joint surface bedding-in region 15 in transition rings 1, processed on seal receptacle 11
Go out first level joint surface bedding-in region 9, " bedding-in " herein refers to the gold that plane roughness processing is carried out to metal combination face
Category processing technology, it is therefore an objective to improve real contact area when metal combination face cooperates.Described first level joint surface
Bedding-in region 9, the second horizontal joint surface bedding-in region 15 covering main oil gallery 10, the second horizontal covering of joint surface bedding-in region 15 the
One oil duct 2, second oil duct 4, connects in first level joint surface bedding-in region 9, the second horizontal joint surface bedding-in region 15
Tactile binding face can also encrypt sealing.When transition rings 1, end cap 8, seal receptacle 11 are after assembling in place, 7 points of first sealing strip
Not with first oil duct 2, sealing plate 5 formed sealing structure, second sealing strip 6 respectively with second oil duct 4, sealing plate 5
Form sealing structure；And first level joint surface bedding-in region 9 therein, the second horizontal joint surface bedding-in region 15 actually connect
Contacting surface product sum is preferably to account for the face in the horizontal joint surface bedding-in region 15 in the first level joint surface bedding-in region 9 and second
More than the 90% of product sum.By proposing the requirement of bedding-in contact area, encryption sealing to the horizontal joint surface of steam turbine generator, can
To better ensure that between the air on the outside of hydrogen and machine of the steam turbine generator complete trails sealing structure to hydrogen side in generator
Effectively intercept, and oil leakage phenomenon of the steam turbine generator at horizontal joint surface can be avoided.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, should referred to
Go out, all any modification, equivalent and improvement made within spirit of the present utility model and principle etc. all should be included
Within protection domain of the present utility model.
Claims (10)
1. a kind of steam turbine generator complete trails sealing structure, including transition rings (1), end cap (8), seal receptacle (11) and rotating shaft
(12) and sealing flap (13), the seal receptacle (11), sealing flap (13) respectively with rotating shaft (12) formed sealing structure, it is described
Sealing structure is formed between seal receptacle (11) and sealing flap (13), it is characterised in that：Also include sealing plate (5), the transition
Ring (1) forms sealing structure with end cap (8), seal receptacle (11) respectively by sealing plate (5).
2. steam turbine generator complete trails sealing structure according to claim 1, it is characterised in that：Also include the first sealing strip
(7) mounting groove, is opened up on seal receptacle (11), in mounting groove of the first sealing strip (7) interlocking on seal receptacle (11), and
Sealing structure is formed between first sealing strip (7) and sealing plate (5).
3. steam turbine generator complete trails sealing structure according to claim 2, it is characterised in that：The transition rings (1) with
The main oil gallery (10) being mutually communicated is set between seal receptacle (11), is opened up in transition rings (1) and is mutually communicated with main oil gallery (10)
First oil duct (2), form sealing structure, and the main oil gallery between first sealing strip (7) and first oil duct (2)
(10), filling Seal Oil in first oil duct (2).
4. steam turbine generator complete trails sealing structure according to claim 3, it is characterised in that：On the transition rings (1)
The first dashpot (16) is opened up, first dashpot (16) is mutually communicated with main oil gallery (10), first oil duct (2) respectively.
5. steam turbine generator complete trails sealing structure according to claim 4, it is characterised in that：The first described dashpot
(16) it is bar-shaped trough, its two ends forms circular arc transition part respectively.
6. the steam turbine generator complete trails sealing structure according to claim any one of 2-5, it is characterised in that：Also include the
Two sealing strips (6), open up mounting groove on end cap (8), in mounting groove of the second sealing strip (6) interlocking on end cap (8),
And form sealing structure between second sealing strip (6) and sealing plate (5).
7. steam turbine generator complete trails sealing structure according to claim 6, it is characterised in that：The transition rings (1) with
The main oil gallery (10) being mutually communicated is set between seal receptacle (11), is opened up in transition rings (1) and is mutually communicated with main oil gallery (10)
Second oil duct (4), form sealing structure, and the main oil gallery between second sealing strip (6) and second oil duct (4)
(10), filling Seal Oil in second oil duct (4).
8. steam turbine generator complete trails sealing structure according to claim 7, it is characterised in that：On the transition rings (1)
The second dashpot (3) is opened up, second dashpot (3) is mutually communicated with main oil gallery (10), second oil duct (4) respectively.
9. steam turbine generator complete trails sealing structure according to claim 8, it is characterised in that：The second described dashpot
(3) it is circular trough.
10. steam turbine generator complete trails sealing structure according to claim 6, it is characterised in that：The first described sealing
The cross sectional shape flare of bar (7) and/or the second sealing strip (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372158.2U CN206293995U (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine generator complete trails sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372158.2U CN206293995U (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine generator complete trails sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206293995U true CN206293995U (en) | 2017-06-30 |
Family
ID=59104424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621372158.2U Withdrawn - After Issue CN206293995U (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine generator complete trails sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206293995U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787374A (en) * | 2016-12-14 | 2017-05-31 | 东方电气集团东方电机有限公司 | A kind of steam turbine generator complete trails sealing structure and assembly method |
| GB2571486A (en) * | 2016-12-14 | 2019-08-28 | Dongfang Electric Machinery Co Ltd | Full-path sealing structure of steam turbine generator and assembly method |
-
2016
- 2016-12-14 CN CN201621372158.2U patent/CN206293995U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106787374A (en) * | 2016-12-14 | 2017-05-31 | 东方电气集团东方电机有限公司 | A kind of steam turbine generator complete trails sealing structure and assembly method |
| WO2018107981A1 (en) * | 2016-12-14 | 2018-06-21 | 东方电气集团东方电机有限公司 | Full-path sealing structure of steam turbine generator and assembly method |
| GB2571486A (en) * | 2016-12-14 | 2019-08-28 | Dongfang Electric Machinery Co Ltd | Full-path sealing structure of steam turbine generator and assembly method |
| GB2571486B (en) * | 2016-12-14 | 2022-03-23 | Dongfang Electric Machinery Co Ltd | Full-path sealing structure of steam turbine generator and assembly method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170630 Effective date of abandoning: 20181026 |
|
| AV01 | Patent right actively abandoned |