CN2717099Y - Hydrogen cooling generator - Google Patents
Hydrogen cooling generator Download PDFInfo
- Publication number
- CN2717099Y CN2717099Y CN 200420016324 CN200420016324U CN2717099Y CN 2717099 Y CN2717099 Y CN 2717099Y CN 200420016324 CN200420016324 CN 200420016324 CN 200420016324 U CN200420016324 U CN 200420016324U CN 2717099 Y CN2717099 Y CN 2717099Y
- Authority
- CN
- China
- Prior art keywords
- sealing
- oil
- hydrogen
- generator
- fixed
- 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 - Lifetime
Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 81
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 81
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000001816 cooling Methods 0.000 title abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 88
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 231100000989 no adverse effect Toxicity 0.000 abstract 1
- 239000003595 mist Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model relates to a hydrogen cooling generator, in particular to relating to a sealing structure of the hydrogen cooling generator. The utility model concludes a sealing pad seat fixed with an end closure and a sealing pad positioned inside the sealing pad seat. The back of the end closure is fixed with an oil-sealing seat. An oil-sealing ring is fixed on the oil-sealing seat. A sealing base whose external circle edge is sealedly contacted with the inner surface of the sealing pad seat is fixed on the inner side of the sealing pad seat. A rubber sealing ring is fixed at the inner circle of the sealing base. An oil-outlet pipe is fixed on the sealing base. The utility model doesn't alter the existing sealing device of the hydrogen cooled generator and some new sealing structures are superimposed on the base of the existing sealing device. Thus, the sealing property of the hydrogen cooled generator is largely improved and the problems that the amount of the hydrogen leaking of the existing hydrogen cooled generator is large, the inner oil-feeding and the hydrogen purity is low and the temperature is large are overcome. The superimposing sealing structure has the following advantages: the process is simple, the installation is convenient, the time of use is long, the shaft can not be harmed, no adverse effect can be generated to the hydrogen cooled generator.
Description
Technical field
The utility model is a hydrogen cooled generator, particularly the hermetically-sealed construction of hydrogen cooled generator.
Background technology
The Sealing Technology that present hydrogen cooled generator generally uses is to stretch out end caps in the hydrogen cooled generator rotating shaft to install oil sealing device additional.Oil sealing device comprises the sealing bearing bush seat fixing with end cap, is positioned at the sealing bearing bush of sealing bearing bush seat, also is fixed with oil seal seat at the end cap rear portion, is fixed with oil seal ring on the oil seal seat.With the pressure oil of oil pressure a little more than hydrogen pressure in the machine, the gap between the circulation of the oil filler point on sealing bearing bush seat injection sealing bearing bush and rotating shaft spills to stop hydrogen.Sealing bearing bush is the critical component of hydrogen cooled generator sealing hydrogen, is divided into disc type and ring type by structure, and the ring type sealing bearing bush has versions such as single current floating ring, double-current floating ring again.In recent years at relatively large hydrogen cooled generator, as all adopting double-current ring type sealing bearing bush on 100-300MW hydrogen cooled generator and the 600MW hydrogen cooled generator.The hydrogen side of generator respectively has one pressure oil to inject sealing bearing bush with sky (gas) side, and hydrogen side oil has the circulatory system of a sealing of one's own, has avoided flowing into the hydrogen side because of the oil that is dissolved with air, makes hydrogen purity decline in the generator.
Though at present the hydrogen sealing system that uses be one passed through long-term use, than perfect system, but still many problems appear, big as leaking the hydrogen amount, the generator oil-feed and cause thus that hydrogen purity is low, high humidity etc.Cause the reason of these problems and endanger as follows:
1, generator leakage hydrogen amount is big
Generator leaks the big reason of hydrogen amount except that generator body and coupled pipeline, all spill basically by sealing oil system, its reason be sealing bearing bush with there being the gap between the macro-axis, leaking hydrogen can't avoid.After big or sealing bearing bush was worn when the sealing bearing bush assemblage gap, it was more serious to leak hydrogen.
Generator leaks hydrogen greatly at first can cause the generator load shedding, major accidents such as breaking out of fire when serious, blast.
2, generator oil-feed
Hydrogen cooled generator when operation, sealing oil be by the hydrogen side seal watt along the generator's motor shaft ejection, the oil that splashes forms mist of oil.Since the inner cooling air of hydrogen cooled generator system be fan by the rotor both sides to central air blast, the outside of rotor fan (end cap side) blast is well below the operation hydrogen pressure, like this, mist of oil in company with the hydrogen in the circulation by in the generator amature suction generator.Though oil seal seat, the oil seal ring fixing at the end cap rear portion can partly play sealing, prevent the effect that mist of oil enters, but because the oil seal ring on the existing hydrogen cooled generator is a becket, just there is (very little) gap in it with big between centers itself, add long-time running metal oil seal ring and be worn, this oil sealing effect will reduce significantly.
After generator produced leakage of oil, mist of oil entered in the generator, can damage generator insulating.
3, generator hydrogen purity decline, humidity rise
Because all multifactor, cause sky side, two bursts of oil pressure imbalances of hydrogen side, make have leisure, the hydrogen side is scurried oil mutually, no matter is that sky side direction hydrogen side is scurried, still the empty side of hydrogen side direction is scurried, and finally all causes hydrogen-side seal oil oil to descend, foreign material risings such as contained water, air in the oil.When oil with after hydrogen contact, will cause hydrogen purity decline, humidity rising.
Hydrogen purity in the generator descends, the humidity rising can cause significant problems such as generator rotor insulation decline, rotor end bell damage.
Summary of the invention
The utility model solves big, the problems such as the hydrogen purity low humidity is big, inner oil-feed of leakage hydrogen amount that existing hydrogen cooled generator exists, and provides a kind of hermetically-sealed construction improved hydrogen cooled generator
The utility model is to adopt following technical scheme to realize: hydrogen cooled generator, comprise the sealing bearing bush seat of fixing with end cap, the sealing bearing bush that is positioned at the sealing bearing bush seat, also be fixed with oil seal seat at the end cap rear portion, be fixed with oil seal ring on the oil seal seat, be fixed with the sealed base that outer circular edge contacts with the sealing of sealing bearing bush base inner surface in the inboard of sealing bearing bush seat, on the interior circle of sealed base, be fixed with rubber seal (or oil resistant, wear-resistant flexible sealing ring made from other material), be fixed with oil exit pipe on the sealed base.By setting up sealed base and rubber seal in sealing bearing bush seat inboard, can solve the interior hydrogen of generator along the macro-axis leakage problems, particularly under the situation that sealing bearing bush wearing and tearing back or sealing oil voltage rise are not got up, sealed base and rubber seal can prevent the seepage of hydrogen, guarantee the rated pressure of hydrogen, generator is normally moved; The hermetically-sealed construction of setting up can be avoided sealing oil to spray along generator's motor shaft by sealing bearing bush and form mist of oil, hydrogen-side seal oil can only be along sealed base, discharge through oil exit pipe, greatly reduced contacting of sealing oil and hydrogen, thereby prevented that mist of oil from being sucked the inner oil-feed problem of the generator that is caused in the generator by the generator amature fan with it; Even sealing oil system has taken place from empty (gas) side direction hydrogen side or from the oil of scurrying of the empty side of hydrogen side direction, because contact seldom between the hydrogen G﹠O, so also reduced influence to a great extent, thereby solved the problem that hydrogen humidity increases in the generator, purity reduces to hydrogen purity, humidity.
Rubber seal according to circumstances can stick with glue or alternate manner is consolidated on the interior circle of sealed base.
The utility model does not change the existing sealing device of hydrogen cooled generator, on the basis of existing sealing device by setting up new hermetically-sealed construction, the sealing property of hydrogen cooled generator is greatly improved, has overcome big, inner oil-feed of existing Hydrogen Leakage for Hydrogen-cooled Generator amount and hydrogen purity and reduced problems such as humidity increase.The hermetically-sealed construction technology of setting up is simple, easy for installation, service time long, do not damage macro-axis, and can not produce any harmful effect to hydrogen cooled generator.
Description of drawings
Fig. 1 is the existing schematic diagram of sealing device of hydrogen cooled generator;
Fig. 2 is the schematic diagram of sealing device of hydrogen cooled generator described in the utility model;
Fig. 3 is the structural representation of rubber seal;
Fig. 4 is the sectional side view of Fig. 3;
Embodiment
Hydrogen cooled generator, comprise the sealing bearing bush seat of fixing with end cap 13 14, the sealing bearing bush 4 that is positioned at the sealing bearing bush seat, also be fixed with oil seal seat 11 at the end cap rear portion, be fixed with oil seal ring 12 on the oil seal seat, be fixed with the sealed base 10 that outer circular edge contacts with the sealing of sealing bearing bush base inner surface in the inboard of sealing bearing bush seat, on the interior circle of sealed base, be fixed with rubber seal 2, be fixed with oil exit pipe 9 on the sealed base.
Be further to improve the oil sealing effect, prevent that sealing oil from carrying out generator inside, fixing oil seal ring 12 also adopts rubber oil sea ring (or oil resistant, wear-resistant flexible sealing ring made from other material) on the oil seal seat.The oil sealing effect of rubber oil sea ring is better than existing metal oil seal ring.The rubber oil sea ring is as the second road barrier of generator inside oil sealing, and the raising of its oil sealing performance can thoroughly solve the inner leakage of oil problem of generator.The rubber oil sea ring is available to be adhesively fixed on oil seal seat.
The outer rim of rubber seal 2 is shaped on fin 15, has groove at the internal circular surfaces of sealed base.The fin of rubber seal outer rim is snapped in the groove on the sealed base internal circular surfaces, to realize fixing of rubber seal and sealed base.Adopt this fixed structure to stick with glue more standard relatively.
The internal circular surfaces 16 of rubber seal 2 is made " V " shape.Like this, during generator operation, when oil pressure during greater than hydrogen pressure, a limit of the close sealing bearing bush of " V " shape internal circular surfaces of rubber seal 2 is pressed towards central authorities and closely contacts with macro-axis 1, and the raising seal degree, at this moment, the hydrogen side is fuel-displaced to enclose cooling and lubrication to sealing, can prevent reasons damages such as sealing ring temperature height or friction; When generator outage or when being in the jiggering state, hydrogen pressure is higher than oil pressure, and another limit of " V " shape internal circular surfaces of rubber seal 2 is pressed towards central authorities and closely contact with macro-axis 1, and improves seal degree, and generator speed is low at this moment, and sealing ring generates heat also low.Therefore, the internal circular surfaces 16 of rubber seal 2 is made " V " shape and help improving further sealing effectiveness.
Fixing rubber oil sea ring 12 on the oil seal seat (or oil resistant, wear-resistant flexible sealing ring made from other material) also can adopt the structure identical with rubber seal 2, comprises cylindrical fin and " V " shape internal circular surfaces.Correspondingly on the internal circular surfaces of oil seal seat 11, also have groove.
In hydrogen cooled generator when operation,, sealing oil empty side fuel feed hole 6, the hydrogen side fuel feed hole 7 from the sealing bearing bush seat respectively enters, from fuel-displaced hole 3 discharges of the fuel-displaced hole 5 of empty side, hydrogen side between sealing bearing bush seat and the macro-axis 1; Discharge from the oil outlet 8 of sealing oil on sealed base 10, oil exit pipe 9 and end cap that the fuel-displaced hole of hydrogen side is discharged, thereby cause the circulation that forms sealing oil.
Claims (5)
1, a kind of hydrogen cooled generator, comprise the sealing bearing bush seat of fixing with end cap (13) (14), the sealing bearing bush (4) that is positioned at the sealing bearing bush seat, also be fixed with oil seal seat (11) at the end cap rear portion, be fixed with oil seal ring (12) on the oil seal seat, it is characterized by: be fixed with the sealed base (10) that outer circular edge contacts with the sealing of sealing bearing bush base inner surface in the inboard of sealing bearing bush seat, on the interior circle of sealed base, be fixed with rubber seal (2), be fixed with oil exit pipe (9) on the sealed base.
2, hydrogen cooled generator as claimed in claim 1 is characterized by: oil seal ring (12) fixing on the oil seal seat also adopts the rubber oil sea ring.
3, hydrogen cooled generator as claimed in claim 1 or 2 is characterized by: the outer rim of rubber seal (2) is shaped on fin (15), has groove at the internal circular surfaces of sealed base.
4, hydrogen cooled generator as claimed in claim 1 or 2 is characterized by: the internal circular surfaces (16) of rubber seal (2) is made " V " shape.
5, hydrogen cooled generator as claimed in claim 3 is characterized by: the internal circular surfaces (16) of rubber seal (2) is made " V " shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016324 CN2717099Y (en) | 2004-06-08 | 2004-06-08 | Hydrogen cooling generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420016324 CN2717099Y (en) | 2004-06-08 | 2004-06-08 | Hydrogen cooling generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2717099Y true CN2717099Y (en) | 2005-08-10 |
Family
ID=34870253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420016324 Expired - Lifetime CN2717099Y (en) | 2004-06-08 | 2004-06-08 | Hydrogen cooling generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2717099Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175437A (en) * | 2012-11-20 | 2013-06-26 | 孟金来 | Flexible contact-type sealing device |
| CN104421432A (en) * | 2013-08-21 | 2015-03-18 | 中国广核集团有限公司 | Sealing component of electric generator at nuclear power station and sealing system |
| WO2018107985A1 (en) * | 2016-12-14 | 2018-06-21 | 东方电气集团东方电机有限公司 | Loop-shaped oil sealing structure of steam turbine generator |
| CN109104025A (en) * | 2018-10-10 | 2018-12-28 | 内蒙古聚达发电有限责任公司 | Hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove |
-
2004
- 2004-06-08 CN CN 200420016324 patent/CN2717099Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175437A (en) * | 2012-11-20 | 2013-06-26 | 孟金来 | Flexible contact-type sealing device |
| CN104421432A (en) * | 2013-08-21 | 2015-03-18 | 中国广核集团有限公司 | Sealing component of electric generator at nuclear power station and sealing system |
| CN104421432B (en) * | 2013-08-21 | 2017-11-21 | 中国广核集团有限公司 | The seal member and sealing system of generator of nuclear power station |
| WO2018107985A1 (en) * | 2016-12-14 | 2018-06-21 | 东方电气集团东方电机有限公司 | Loop-shaped oil sealing structure of steam turbine generator |
| GB2571487A (en) * | 2016-12-14 | 2019-08-28 | Dongfang Electric Machinery Co Ltd | Loop-shaped oil sealing structure of steam turbine generator |
| GB2571487B (en) * | 2016-12-14 | 2022-03-23 | Dongfang Electric Machinery Co Ltd | Loop-shaped oil sealing structure of steam turbine generator |
| CN109104025A (en) * | 2018-10-10 | 2018-12-28 | 内蒙古聚达发电有限责任公司 | Hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove |
| CN109104025B (en) * | 2018-10-10 | 2024-01-26 | 内蒙古聚达发电有限责任公司 | Hydrogen-cooled generator double-flow-ring sealing tile with wedge-shaped oil film with stagnation grooves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANXI ELECTRIC POWER COMPANY, ELECTRIC POWER RES Free format text: FORMER OWNER: DONG NAIFEN; PATENTEE Effective date: 20081024 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081024 Address after: No. 6, Qingnian Road, Shanxi, Taiyuan Province: 030001 Patentee after: Electric Power Research Institute of Shanxi Electric Power Company Address before: Shanxi province Taiyuan city Qingnian Road 18 electricity academy, zip code: 030001 Co-patentee before: Zhang Jianping Patentee before: Dong Feng |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140608 Granted publication date: 20050810 |