CN208874395U - Hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove - Google Patents
Hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove Download PDFInfo
- Publication number
- CN208874395U CN208874395U CN201821636816.3U CN201821636816U CN208874395U CN 208874395 U CN208874395 U CN 208874395U CN 201821636816 U CN201821636816 U CN 201821636816U CN 208874395 U CN208874395 U CN 208874395U
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- China
- Prior art keywords
- hydrogen
- bearing bush
- sealing bearing
- faying face
- viscous flow
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- 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.)
- Withdrawn - After Issue
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 238000007789 sealing Methods 0.000 title claims abstract description 106
- 239000001257 hydrogen Substances 0.000 title claims abstract description 103
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 103
- 239000012530 fluid Substances 0.000 title claims abstract description 15
- 239000001996 bearing alloy Substances 0.000 claims description 11
- 230000002929 anti-fatigue Effects 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 229910000897 Babbitt (metal) Inorganic materials 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses the hydrogen cooled generator double fluid ring sealing bearing bushes with wedged-shaped oil film film strips viscous flow groove, sealing bearing bush and erection support are installed on generator shaft, empty side seal oil-in and hydrogen-side seal oil entrance are equipped with outside sealing bearing bush, sealing bearing bush inner face is equipped with empty side seal faying face, empty side ring shape distributing groove, hydrogen space every sealed faying face, hydrogen side ring-type distributing groove and hydrogen side sealed faying face；The hydrogen side sealed faying face of sealing bearing bush inner face is conical surface narrowed from left to right, and empty side seal faying face and hydrogen space are parallel with the external cylindrical surface of generator shaft every sealed faying face；Several viscous flow grooves parallel to each other are evenly equipped on the hydrogen side sealed faying face of sealing bearing bush inner face, viscous flow groove is tilted towards hydrogen space every sealed faying face direction.The conical surface and viscous flow groove of sealing bearing bush inner face can effectively improve its performance for sealing hydrogen, and when sealing bearing bush and generator shaft wear mutually and increase seal clearance, the sealability of sealing bearing bush will not be reduced.
Description
Technical field
The utility model is specifically related to the hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove.
Background technique
Hydrogen cooled generator refers to the machine using hydrogen-cooled generator, both ends fan of the hydrogen in generator in generator
Driving under, make forced circulation flowing in generator in a manner of closed cycle, obtain the iron core of generator and rotor windings
To cooling.Therebetween, hydrogen flows through four hydrogen coolers positioned at generator four corners, through hydrogen cooler hydrogen after cooling
Enter iron core again and rotor windings make iterative cycles.The cooling water of hydrogen cooler comes from closed-type circulating cooling water system.
Hydrogen under room temperature is less active, but after hydrogen is mixed with oxygen or air, can occur if being ignited
Explosion, consequence are hardly imaginable.It is therefore desirable to hydrogen purity in generator is not less than 96%, oxygen content is no more than 2%, and
And in substitution gas, transition is carried out using inert gas, or use vacuum displacement, directly touched to avoid hydrogen and oxygen, is mixed
It closes, prevents to explode.
Hydrogen cooled generator group all can at the sealing surface of generator sealing bearing bush and the diameter of axle of generator shaft after longtime running
Abrasion, so that seal clearance be made to increase, sealing bearing bush sealability is reduced, and leads to generator hydrogen gas leakage, jeopardizes unit peace
Row for the national games, and generator is mended hydrogen amount and is increased, and economy is deteriorated；More seriously, generator sealing bearing bush and engine spindle
It is difficult to repair after abrasion, sealing bearing bush even engine rotor is caused to scrap.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the prior arts provides the hydrogen with wedged-shaped oil film film strips viscous flow groove
Cold generator double fluid ring sealing bearing bush, to solve hydrogen cooled generator group after longtime running, the sealing surface and hair of generator sealing bearing bush
It can all be worn at the diameter of axle of electric machine main shaft, so that seal clearance be made to increase, sealing bearing bush sealability is reduced, and leads to generator
The problem of hydrogen gas leakage.
To achieve the above object, technical solution adopted in the utility model is: providing has wedged-shaped oil film film strips viscous flow ditch
The hydrogen cooled generator double fluid ring sealing bearing bush of slot, sealing bearing bush and erection support are equipped on generator shaft, and sealing bearing bush is located at installation
In support, there is seal clearance between sealing bearing bush and generator shaft；It is the outer air side of generator on the outside of the erection support left end,
It is hydrogen gas side in generator on the outside of erection support right end, arrangement from left to right is free side seal oil-in and hydrogen side outside sealing bearing bush
Oil-in is sealed, sealing bearing bush inner face is arranged from left to right free side seal faying face, empty side ring shape distributing groove, hydrogen sky separation seal
Faying face, hydrogen side ring-type distributing groove and hydrogen side sealed faying face, empty side seal oil-in are connected to empty side ring shape distributing groove, hydrogen side
Sealing oil-in is connected to hydrogen side ring-type distributing groove；
The hydrogen side sealed faying face of the sealing bearing bush inner face is conical surface narrowed from left to right, empty side seal faying face
It is parallel with the external cylindrical surface of generator shaft every sealed faying face with hydrogen space；The hydrogen side of the sealing bearing bush inner face, which seals, to be combined
Several viscous flow grooves parallel to each other are evenly equipped on face, viscous flow groove is tilted towards hydrogen space every sealed faying face direction.
Preferably, the angle α between the hydrogen side sealed faying face and the external cylindrical surface of generator shaft is not more than
10°。
Preferably, the viscous flow groove is not more than towards hydrogen space every the inclined angle beta of sealed faying face direction
60°。
Preferably, the sealing bearing bush inner face is cast with wear-resistant, anti-bonding, anticorrosive, antifatigue and resistant to pollution axis
Alloy-layer is held, sealed faying face, hydrogen space are located on the inner face of bearing alloy layer every sealed faying face and hydrogen side sealed faying face,
The depth of empty side ring shape distributing groove, hydrogen side ring-type distributing groove and viscous flow groove is less than the thickness of bearing alloy layer.
Preferably, the bearing alloy layer maximum gauge is 4-6mm.
The utility model has the following beneficial effects:
1. the hydrogen side sealed faying face of the utility model sealing bearing bush inner face is conical surface narrowed from left to right, sealing bearing bush
Seal clearance between generator shaft becomes wedge type seal clearance, uniformly opened up in the conical surface several it is mutually equal
Capable viscous flow groove；Wedge type sealing oil film will be formed in wedge type seal clearance, and hydrogen can be prevented with sealing oil whirl leakage
The rigidity for increasing sealing oil film simultaneously, can suitably increase seal clearance；Viscous flow groove can store Seal Oil, to sealing bearing bush and hair
Effectively lubricating when electric machine main shaft contacts friction firmly, while can partially prevent the hydrogen-side seal oil channelling dissolved with hydrogen gas bubbles to hair
The outer air side of motor takes away hydrogen, to further increase the sealing performance of sealing bearing bush；Therefore, the conical surface of sealing bearing bush inner face
Its performance for sealing hydrogen can be effectively improved with viscous flow groove, is worn mutually in sealing bearing bush and generator shaft and makes the two
Between seal clearance increase when, the sealability of sealing bearing bush will not reduce, and can reduce or even prevent generator from occurring
The problem of hydrogen gas leakage.
2. the utility model sealing bearing bush inner face is cast with wear-resistant, anti-bonding, anticorrosive, antifatigue and resistant to pollution bearing
Alloy-layer, empty side seal faying face, hydrogen space are located at the inner face of bearing alloy layer every sealed faying face and hydrogen side sealed faying face
On, the service life of sealing bearing bush can be effectively improved and reduce the abrasion to generator shaft surface.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of traditional hydrogen cooled generator double fluid ring sealing bearing bush structural schematic diagram；
Sealing oil film schematic diagram after seal clearance increase of the Fig. 2 between sealing bearing bush and engine spindle；
Sealing oil film vortex motion state schematic diagram of the Fig. 3 between sealing bearing bush and engine spindle:
Fig. 4 is the structural schematic diagram of the hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove；
Fig. 5 is that the example structure of the hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove is illustrated
Figure.
Wherein: 1, generator shaft；2, hydrogen-side seal oil entrance；3, hydrogen gas side in generator；4, empty side seal oil-in；
5, sealing bearing bush；6, erection support；7, the outer air side of generator；8, empty side seal faying face；9, hydrogen space is every sealed faying face；
10, hydrogen side sealed faying face；11, oil film is sealed；12, hydrogen gas bubbles；13, conical surface；14, viscous flow groove；15, empty side ring shape
Distributing groove；16, hydrogen side ring-type distributing groove.
Specific embodiment
It is specific below in conjunction with the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Technical solutions of the utility model are clearly and completely described in embodiment and corresponding attached drawing.
With reference to Fig. 1,4 and 5, the present embodiment provides the hydrogen cooled generator double fluid ring sealings with wedged-shaped oil film film strips viscous flow groove
Watt, sealing bearing bush 5 and erection support 6 are installed, sealing bearing bush 5 is located in erection support 6, sealing bearing bush 5 and power generation on generator shaft 1
There is seal clearance between owner's axis 1；It is the outer air side 7 of generator on the outside of 6 left end of erection support, outside 6 right end of erection support
Side is hydrogen gas side 3 in generator, and the arrangement from left to right of 5 outside of sealing bearing bush is free side seal oil-in 4 and hydrogen-side seal oil entrance
2,5 inner face of sealing bearing bush is arranged from left to right is free side seal faying face 8, empty side ring shape distributing groove 15, hydrogen sky separation seal to combine
Face 9, hydrogen side ring-type distributing groove 16 and hydrogen side sealed faying face 10, empty side seal oil-in 4 are connected to empty side ring shape distributing groove 15,
Hydrogen-side seal oil entrance 2 is connected to hydrogen side ring-type distributing groove 16；
The hydrogen side sealed faying face 10 of 5 inner face of sealing bearing bush is conical surface 13 narrowed from left to right, empty side seal
Faying face 8 and hydrogen space are parallel with the external cylindrical surface of generator shaft 1 every sealed faying face 9；The hydrogen of 5 inner face of sealing bearing bush
Several viscous flow grooves 14 parallel to each other are evenly equipped on side seal faying face 10, viscous flow groove 14 is towards hydrogen space every sealed faying face
The inclination of 9 directions.
Angle α between the hydrogen side sealed faying face 10 and the external cylindrical surface of generator shaft 1 is not more than 10 °.
The viscous flow groove 14 is not more than 60 ° every the inclined angle beta of 9 direction of sealed faying face towards hydrogen space.
5 inner face of sealing bearing bush is cast with wear-resistant, anti-bonding, anticorrosive, antifatigue and resistant to pollution bearing alloy layer,
Sealed faying face 8, hydrogen space are located on the inner face of bearing alloy layer every sealed faying face 9 and hydrogen side sealed faying face 10, empty side
The depth of cyclic annular distributing groove 15, hydrogen side ring-type distributing groove 16 and viscous flow groove 14 is less than the thickness of bearing alloy layer.
The bearing alloy layer maximum gauge is 4-6mm.
With reference to Fig. 2, the seal clearance between conventional seals watt 5 and generator shaft 1 is smaller, in addition the original of generator vibration
Because 5 inner face of sealing bearing bush will be worn with runing time and constantly, and the seal clearance between sealing bearing bush 5 and generator shaft 1 is therewith
Constantly increase, its sealing performance fails after the seal clearance between sealing bearing bush 5 and generator shaft 1 is exceeded, and seal clearance is super
The sealing oil film 11 formed before mark is as shown in Figure 2.
Sealing oil film with reference to Fig. 3, after seal clearance between sealing bearing bush 5 and generator shaft 1 is exceeded, when rotor oscillation
11 are in vortex motion state as shown in Figure 3, and the empty side ring shape distributing groove 15 and hydrogen side ring-type distributing groove 16 of sealing bearing bush inner face can add
The whirling motion phenomenon of play sealing oil film 11, hydrogen gas side 3, which has hydrogen and enters in Seal Oil under vortex motion state, in generator forms hydrogen
Gas bubble 12 leaks into the outer air side 7 of generator then to cause the sealing performance of sealing bearing bush 5 to fail.
With reference to Figure 4 and 5, the hydrogen side sealed faying face 10 of 5 inner face of sealing bearing bush is conical surface 13 narrowed from left to right, is made
Seal clearance between sealing bearing bush 5 and generator shaft 1 becomes wedge type seal clearance, will form wedge type in the wedge type seal clearance
Oil film 11 is sealed, wedge type seal clearance is full of Seal Oil convenient for three sealed faying faces, prevents hydrogen with sealing 11 whirling motion of oil film
Leakage, while the rigidity of sealing oil film 11 can be increased；Since the rigidity of sealing oil film 11 increases, can suitably increase between sealing
Gap, biggish seal clearance can slow down the abrasion on 1 surface of generator shaft, including abrasion of particles and vibration abrasion.
With reference to Figure 4 and 5, be uniformly provided on the hydrogen side sealed faying face 10 of 5 inner face of sealing bearing bush several it is parallel to each other
Viscous flow groove 14, viscous flow groove 14 are tilted towards hydrogen space every 9 direction of sealed faying face, can store Seal Oil in order to close
To contact surface effectively lubricating when envelope watt 5 contacts friction with generator shaft 1 firmly, while can partially prevent to be dissolved with hydrogen gas bubbles 12
Hydrogen-side seal oil channelling take away hydrogen to the outer air side 7 of generator, to further increase the energy of sealing hydrogen anti-leak
Power.
By practice examining, the angle α between hydrogen side sealed faying face 10 and generator shaft 1 is more suitable no more than 10 °
Preferably, viscous flow groove 14 is more suitable for no more than 60 ° every the inclined angle beta of 9 direction of sealed faying face towards hydrogen space.
5 inner face of sealing bearing bush is cast with wear-resistant, anti-bonding, anticorrosive, antifatigue and resistant to pollution bearing alloy layer,
Empty side seal faying face 8, hydrogen space are located on the inner face of bearing alloy layer every sealed faying face 9 and hydrogen side sealed faying face 10,
The service life of sealing bearing bush 5 can be effectively improved and reduce the abrasion to generator shaft surface.
In summary it is found that the hydrogen side sealed faying face 10 of 5 inner face of the utility model sealing bearing bush is narrowed from left to right
Conical surface 13, the seal clearance between sealing bearing bush 5 and generator shaft 1 becomes wedge type seal clearance, in the conical surface 13
On uniformly open up several viscous flow grooves 14 parallel to each other；Wedge type sealing oil film 11 will be formed in wedge type seal clearance, it can
It prevents hydrogen with sealing 11 whirling motion of oil film leakage while increasing the rigidity of sealing oil film 11, can suitably increase seal clearance；It remains in a standstill
Groove 14 can store Seal Oil, contact effectively lubricating when rubbing firmly with generator shaft 1 to sealing bearing bush 5, while can partially hinder
Only the hydrogen-side seal oil channelling dissolved with hydrogen gas bubbles 12 takes away hydrogen to the outer air side 7 of generator, to further increase close
The sealing performance of envelope watt 5；Therefore, the conical surface 13 of 5 inner face of sealing bearing bush and viscous flow groove 14 can effectively improve it and seal hydrogen
The performance of gas, when sealing bearing bush 5 and generator shaft 1 wear mutually and make seal clearance increase between the two, sealing bearing bush 5
Sealability will not reduce, and can reduce or even prevent generator from the problem of hydrogen gas leakage occur.
Above embodiment is used to illustrate the utility model, rather than limits the utility model, in this reality
With in novel spirit and scope of protection of the claims, to any modifications and changes that the utility model is made, this is both fallen within
The protection scope of utility model.
Claims (5)
1. having the hydrogen cooled generator double fluid ring sealing bearing bush of wedged-shaped oil film film strips viscous flow groove, it is equipped on generator shaft (1) close
Watt (5) and erection support (6) are sealed, sealing bearing bush (5) is located in erection support (6), between sealing bearing bush (5) and generator shaft (1)
There is seal clearance；It is the outer air side (7) of generator on the outside of erection support (6) left end, is hair on the outside of erection support (6) right end
Hydrogen gas side (3) in motor, arrangement is free side seal oil-in (4) and hydrogen-side seal oil entrance from left to right for sealing bearing bush (5) outside
(2), sealing bearing bush (5) inner face arrange from left to right be free side seal faying face (8), empty side ring shape distributing groove (15), hydrogen space every
Sealed faying face (9), hydrogen side ring-type distributing groove (16) and hydrogen side sealed faying face (10), empty side seal oil-in (4) and empty side
Cyclic annular distributing groove (15) connection, hydrogen-side seal oil entrance (2) are connected to hydrogen side ring-type distributing groove (16), it is characterised in that:
The hydrogen side sealed faying face (10) of sealing bearing bush (5) inner face is conical surface (13) narrowed from left to right, and empty side is close
It seals faying face (8) and hydrogen space is parallel with the external cylindrical surface of generator shaft (1) every sealed faying face (9)；The sealing bearing bush
(5) several viscous flow grooves (14) parallel to each other, viscous flow groove (14) court are evenly equipped on the hydrogen side sealed faying face (10) of inner face
Hydrogen space is tilted every sealed faying face (9) direction.
2. the hydrogen cooled generator double fluid ring sealing bearing bush according to claim 1 with wedged-shaped oil film film strips viscous flow groove, special
Sign is: the angle α between the hydrogen side sealed faying face (10) and the external cylindrical surface of generator shaft (1) is not more than 10 °.
3. the hydrogen cooled generator double fluid ring sealing bearing bush according to claim 2 with wedged-shaped oil film film strips viscous flow groove, special
Sign is: the viscous flow groove (14) is not more than 60 ° every the inclined angle beta of sealed faying face (9) direction towards hydrogen space.
4. the hydrogen cooled generator double fluid ring sealing according to claim 1-3 with wedged-shaped oil film film strips viscous flow groove
Watt, it is characterised in that: sealing bearing bush (5) inner face is cast with wear-resistant, anti-bonding, anticorrosive, antifatigue and resistant to pollution axis
Alloy-layer is held, sealed faying face (8), hydrogen space are located at bearing metal every sealed faying face (9) and hydrogen side sealed faying face (10)
On the inner face of layer, the depth of empty side ring shape distributing groove (15), hydrogen side ring-type distributing groove (16) and viscous flow groove (14) is less than bearing
The thickness of alloy-layer.
5. the hydrogen cooled generator double fluid ring sealing bearing bush according to claim 4 with wedged-shaped oil film film strips viscous flow groove, special
Sign is: the bearing alloy layer maximum gauge is 4-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821636816.3U CN208874395U (en) | 2018-10-10 | 2018-10-10 | Hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821636816.3U CN208874395U (en) | 2018-10-10 | 2018-10-10 | Hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208874395U true CN208874395U (en) | 2019-05-17 |
Family
ID=66469784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821636816.3U Withdrawn - After Issue CN208874395U (en) | 2018-10-10 | 2018-10-10 | Hydrogen cooled generator double fluid ring sealing bearing bush with wedged-shaped oil film film strips viscous flow groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208874395U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2018
- 2018-10-10 CN CN201821636816.3U patent/CN208874395U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190517 Effective date of abandoning: 20240126 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190517 Effective date of abandoning: 20240126 |