CN106787374A - A kind of steam turbine generator complete trails sealing structure and assembly method - Google Patents
A kind of steam turbine generator complete trails sealing structure and assembly method Download PDFInfo
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- CN106787374A CN106787374A CN201611154704.XA CN201611154704A CN106787374A CN 106787374 A CN106787374 A CN 106787374A CN 201611154704 A CN201611154704 A CN 201611154704A CN 106787374 A CN106787374 A CN 106787374A
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- sealing
- seal receptacle
- sealing structure
- steam turbine
- turbine generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
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Abstract
The present invention provides a kind of steam turbine generator complete trails sealing structure and assembly method, the steam turbine generator complete trails sealing structure includes transition rings (1), sealing plate (5), end cap (8), seal receptacle (11) and rotating shaft (12) and sealing flap (13), seal receptacle (11), sealing flap (13) forms sealing structure with rotating shaft (12) respectively, sealing structure is formed between seal receptacle (11) and sealing flap (13), transition rings (1) by sealing plate (5) respectively with end cap (8), seal receptacle (11) forms sealing structure.The present invention 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 of the steam turbine generator at horizontal joint surface is set to be greatly improved, with the outstanding advantages such as simple structure, compact, easy to assembly.
Description
Technical field
The present invention relates to steam turbine generator technical field of sealing technology, sealed more particularly, to a kind of steam turbine generator complete trails and tied
Structure and assembly method.
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.
The content of the invention
The technical problem to be solved in the present invention is：For the problem that prior art is present, there is provided a kind of steam turbine generator is complete
Path seal structure and assembly method, improve the sealing reliability at horizontal joint surface when steam turbine generator works.
The technical problem to be solved in the present invention 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 difference
Sealing structure is formed with rotating shaft, sealing structure is formed between the seal receptacle and sealing flap, the transition rings pass through sealing plate
Respectively sealing structure is formed with end cap, seal receptacle.
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, 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.
A kind of assembly method of steam turbine generator complete trails sealing structure, described steam turbine generator complete trails sealing structure
Including transition rings, end cap, seal receptacle and rotating shaft and sealing flap, its assembly method comprises the following steps：
1st step, installs seal receptacle, makes to form sealing structure between seal receptacle and rotating shaft；
2nd step, installs sealing flap, sealing flap is formed sealing structure with seal receptacle, rotating shaft respectively；
3rd step, transition rings are fixedly connected integrally with sealing plate, then transition rings are connected with end cap, seal receptacle respectively
It is fixed, and sealing plate forms sealing structure with end cap, seal receptacle respectively.
Preferably, described transition rings, seal receptacle before assembly, process the second horizontal joint surface bedding-in in transition rings
Region, processes first level joint surface bedding-in region on seal receptacle, and after transition rings, seal receptacle are assembled in place, it is described
First level joint surface bedding-in region, the real contact area sum in the second horizontal joint surface bedding-in region account for first water
Flat seam face bedding-in region and more than the 90% of the second horizontal joint surface bedding-in region area sum.
Preferably, described transition rings, end cap, seal receptacle before assembly, open up mounting groove on end cap, and in the installation
Rabbet the second sealing strip in groove；Mounting groove is opened up on seal receptacle, and rabbets the first sealing strip in the mounting groove, in transition rings
The main oil gallery being mutually communicated is opened up with seal receptacle matching part, and the first level joint surface bedding-in region, the second level are closed
Seam face bedding-in region overlay main oil gallery, also opens up first oil duct, second being mutually communicated with main oil gallery respectively in transition rings
Branch oil duct, and described second horizontal first oil duct of joint surface bedding-in region overlay, second oil duct；The transition rings, end cap,
After assembling in place, first sealing strip forms sealing structure, described second to seal receptacle with first oil duct, sealing plate respectively
Sealing strip forms sealing structure with second oil duct, sealing plate respectively, is filled out in main oil gallery, first oil duct, second oil duct
Fill Seal Oil.
Compared with prior art, the beneficial effects of the invention are as follows：Because seal receptacle, sealing flap form close with rotating shaft respectively
Seal structure, sealing structure is formed between seal receptacle and sealing flap, and transition rings by sealing plate respectively with end cap, seal receptacle shape
Into sealing structure, so that steam turbine generator forms the sealing structure of complete trails closing at horizontal joint surface, can be abundant
Ensure the obstruct between the hydrogen on the inside of steam turbine generator and the air on the outside of steam turbine generator, effectively prevent hydrogen, close
Hydrogen side (higher-pressure region) leakage from generator such as oil sealing flows to machine outside (low-pressure area), is closed in level when steam turbine generator is worked
Sealing reliability at seam face 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 invention.
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 to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with the accompanying drawings and specific implementation
The present invention is described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
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 invention is less, and between each relevant components part
Assembling is simple, therefore so that the unitary construction of steam turbine generator complete trails sealing structure is relatively easy, compact and easy to assembly,
After the assembling in place of each relevant components part, sealing reliability of the steam turbine generator at horizontal joint surface is also significantly carried
It is high.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, opens up mounting groove on end cap 8, and rabbets the second sealing strip 6 in the mounting groove；In seal receptacle 11
On open up mounting groove, and rabbet the first sealing strip 7 in the mounting groove, open up phase with the matching part of seal receptacle 11 in transition rings 1
The main oil gallery 10 of mutual insertion, also opens up first oil duct 2, second being mutually communicated with main oil gallery 10 respectively in the transition rings 1
Branch oil duct 4；In addition, processing the second horizontal joint surface bedding-in region 15 in transition rings 1, first is processed on seal receptacle 11
Horizontal joint surface bedding-in region 9, " bedding-in " herein refers to the intermetallic composite coating that plane roughness processing is carried out to metal combination face
Technique, it is therefore an objective to improve real contact area when metal combination face cooperates.Described first level joint surface bedding-in area
Domain 9, the second horizontal covering of joint surface bedding-in region 15 main oil gallery 10, the second horizontal joint surface bedding-in region 15 covers first oil
2, second, road oil duct 4, the contact in first level joint surface bedding-in region 9, the second horizontal joint surface bedding-in region 15 is fitted
Face can also encrypt sealing.When transition rings 1, end cap 8, seal receptacle 11 assembling in place after, first sealing strip 7 is respectively with the
One oil duct 2, sealing plate 5 form sealing structure, and second sealing strip 6 forms close with second oil duct 4, sealing plate 5 respectively
Seal structure；And first level joint surface bedding-in region 9 therein, the real contact area in the second horizontal joint surface bedding-in region 15
Sum is preferably the area sum for accounting for the horizontal joint surface bedding-in region 15 in the first level joint surface bedding-in region 9 and second
More than 90%.By proposing the requirement of bedding-in contact area, encryption sealing to the horizontal joint surface of steam turbine generator, can be more preferable
Ground ensures steam turbine generator complete trails sealing structure to the effective resistance between the air on the outside of the hydrogen and machine of hydrogen side in generator
Every, and oil leakage phenomenon of the steam turbine generator at horizontal joint surface can be avoided.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is noted that be all
Any modification, equivalent and improvement for being made within the spirit and principles in the present invention etc., should be included in guarantor of the invention
Within the scope of shield.
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 1, it is characterised in that：Also include the second sealing strip
(6) mounting groove, is opened up on end cap (8), in mounting groove of the second sealing strip (6) interlocking on end cap (8), and described the
Sealing structure is formed between two sealing strips (6) and sealing plate (5).
6. steam turbine generator complete trails sealing structure according to claim 5, 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).
7. steam turbine generator complete trails sealing structure according to claim 6, 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.
8. a kind of assembly method of steam turbine generator complete trails sealing structure, it is characterised in that：Described steam turbine generator system-wide
Footpath sealing structure includes transition rings (1), end cap (8), seal receptacle (11) and rotating shaft (12) and sealing flap (13), its assembling side
Method comprises the following steps：
1st step, installs seal receptacle (11), makes to form sealing structure between seal receptacle (11) and rotating shaft (12)；
2nd step, installs sealing flap (13), sealing flap (13) is formed sealing knot with seal receptacle (11), rotating shaft (12) respectively
Structure；
3rd step, transition rings (1) are fixedly connected integrally with sealing plate (5), then by transition rings (1) respectively with end cap (8), close
Envelope seat (11) is connected, and sealing plate (5) forms sealing structure with end cap (8), seal receptacle (11) respectively.
9. the assembly method of steam turbine generator complete trails sealing structure according to claim 8, it is characterised in that：Described
Transition rings (1), seal receptacle (11) before assembly, process the second horizontal joint surface bedding-in region (15) in transition rings (1),
First level joint surface bedding-in region (9) is processed on seal receptacle (11), and when transition rings (1), seal receptacle (11) are assembled in place
Afterwards, the first level joint surface bedding-in region (9), the real contact area sum of the second horizontal joint surface bedding-in region (15)
Account for the 90% of the first level joint surface bedding-in region (9) and the second horizontal joint surface bedding-in region (15) area sum with
On.
10. the assembly method of steam turbine generator complete trails sealing structure according to claim 9, it is characterised in that：It is described
Transition rings (1), end cap (8), seal receptacle (11) before assembly, mounting groove is opened up on end cap (8), and embedding in the mounting groove
Connect the second sealing strip (6)；Mounting groove is opened up on seal receptacle (11), and rabbets the first sealing strip (7) in the mounting groove, in mistake
Cross ring (1) and open up the main oil gallery (10) being mutually communicated, and the first level joint surface bedding-in with seal receptacle (11) matching part
Region (9), the second horizontal joint surface bedding-in region (15) cover main oil gallery (10), also opened up in transition rings (1) respectively with master
First oil duct (2), second oil duct (4) that oil duct (10) is mutually communicated, and the second horizontal joint surface bedding-in region
(15) first oil duct (2), second oil duct (4) are covered；The transition rings (1), end cap (8), seal receptacle (11) are being assembled to
Behind position, first sealing strip (7) forms sealing structure, second sealing with first oil duct (2), sealing plate (5) respectively
Bar (6) forms sealing structure with second oil duct (4), sealing plate (5) respectively, in main oil gallery (10), first oil duct (2), the
Filling Seal Oil in two oil ducts (4).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611154704.XA CN106787374B (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine generator complete trails sealing structure and assembly method |
| PCT/CN2017/114257 WO2018107981A1 (en) | 2016-12-14 | 2017-12-01 | Full-path sealing structure of steam turbine generator and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611154704.XA CN106787374B (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine generator complete trails sealing structure and assembly method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106787374A true CN106787374A (en) | 2017-05-31 |
| CN106787374B CN106787374B (en) | 2018-10-26 |
Family
ID=58888772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611154704.XA Active CN106787374B (en) | 2016-12-14 | 2016-12-14 | A kind of steam turbine generator complete trails sealing structure and assembly method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106787374B (en) |
| WO (1) | WO2018107981A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110350737A (en) * | 2019-05-24 | 2019-10-18 | 中广核工程有限公司 | The installation method of nuclear power generator sealing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114448142B (en) * | 2021-12-29 | 2023-07-04 | 中广核核电运营有限公司 | Generator and rotating seat thereof |
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| CN106787374B (en) * | 2016-12-14 | 2018-10-26 | 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 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110350737A (en) * | 2019-05-24 | 2019-10-18 | 中广核工程有限公司 | The installation method of nuclear power generator sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018107981A1 (en) | 2018-06-21 |
| CN106787374B (en) | 2018-10-26 |
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