CN208486970U - A kind of turbine-generator units thrust bearing air-tight structure - Google Patents
A kind of turbine-generator units thrust bearing air-tight structure Download PDFInfo
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- CN208486970U CN208486970U CN201820853963.XU CN201820853963U CN208486970U CN 208486970 U CN208486970 U CN 208486970U CN 201820853963 U CN201820853963 U CN 201820853963U CN 208486970 U CN208486970 U CN 208486970U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
A kind of turbine-generator units thrust bearing air-tight structure, including inside oil groove lid, inside oil groove lid radially inner side and thrust collar are tightly connected, oil groove lid radial outside and outside oil groove lid are tightly connected, inside oil groove lid and thrust bearing oil sump boundary form air flow channel, air flow channel includes fan blade room, radial flow path and collection mist of oil box；The fan blade room is located in thrust collar groove, circumferentially distributed multiple rotating bladings in fan blade room, and rotating blading and unit rotate jointly generation radial air flow；The radial flow path is laterally arranged, and conducts high-speed flow to collection mist of oil box；The collection mist of oil box is connected to mist of oil absorption system, will collect the mist of oil in mist of oil box and collection is discharged.A kind of turbine-generator units thrust bearing air-tight structure provided by the utility model, can effectively avoid the mist of oil in oil groove from leaking.
Description
Technical field
The utility model belongs to turbine-generator units ancillary equipment, suitable for semi-umbrella type turbine-generator units thrust bearing
Oil mist sealing and mist of oil absorb.
Background technique
It is provided with thrust bearing and lower guide bearing below semi-umbrella type hydroelectric generating set rotor, and is integrated into an oil groove
In, referred to as thrust bearing, for bearing the weight of unit rotating part and limiting its swing.Injection is saturating in thrust bearing oil groove
Flat oil plays lubrication, cooling and anti-rust action.Turbine oil is contacted with high-speed rotating thrust head of water turbine power generating set and runner plate outer wall,
It splashes or hits under the influence of centrifugal force, constantly form gaseous state mist of oil, and pass through oil groove and the contact seal of rotary thrust head
It overflows outward, mist of oil enters generator air circulating system, in generator bar, air cooler and axis with generator amature support arm air inlet
It holds lid equipment surface and upper wind-tunnel ground condenses to form greasy dirt, contaminated equipment surface, or cause the electric components such as stator bar exhausted
Edge reduces, and seriously endangers unit safety stable operation.
The thrust bearing of active service semi-umbrella type turbine-generator units seals, mainly using special between oil groove lid and thrust collar
Wear-resistant material takes contact type sealing structure, and barrier bearing mist of oil leaks, but there are some the drawbacks of not can avoid for the structure: its
One, the swing of unit prevents contact seal material from being close to sealing surface always, there is the possibility that mist of oil leaks always；Second,
Unit long-play causes sealing wear or damage, and sealing effect is made to be deteriorated；Third, for large-scale air cooling formula generating set,
Generator amature rotation drives air flowing in wind-tunnel, and biggish wind speed is generated above thrust bearing oil sump, forms negative pressure, accelerates
The leaking of mist of oil.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of turbine-generator units thrust bearing air-tight structure,
It can effectively avoid contact seal mechanical wear and rotor rotate and to form negative pressure mist of oil in oil groove is caused to leak.
In order to solve the above technical problems, the technical scheme adopted by the utility model is:
A kind of turbine-generator units thrust bearing air-tight structure, including inside oil groove lid, inside oil groove lid radially inner side
It is tightly connected with thrust collar, oil groove lid radial outside and outside oil groove lid are tightly connected, inside oil groove lid and thrust bearing oil sump boundary
Air flow channel is formed, air flow channel includes fan blade room, radial flow path and collection mist of oil box；The fan blade room is located at thrust collar groove
Interior, circumferentially distributed multiple rotating bladings in fan blade room, rotating blading and unit rotate jointly generation radial air flow；The radial flow
Road is laterally arranged, and conducts high-speed flow to collection mist of oil box；The collection mist of oil box is connected to mist of oil absorption system, will collect mist of oil box
Interior mist of oil, which is discharged, to be collected.
The fan blade room is connected to supply air system.Supply air system is for supplementing air in oil groove lid leeward leaf chamber inwardly.
The supply air system includes axial flow blower, axial flow blower successively with blowpipe, the first confluence endless tube connection, confluence
Circumferentially more winding pipes of connection, winding pipe are connected to endless tube with fan blade room air inlet.
The mist of oil absorption system includes electrostatic oil gas separator, mist of oil absorption plant successively with exhaust branch pipe, second
The endless tube that converges is connected to, and circumferentially more outlet air branch pipes of connection, outlet air branch pipe are connected to the second confluence endless tube with collection mist of oil box exhaust outlet.
The inside oil groove lid is spliced into full circle by the sealing of multiple splitted structures.
Described point of lid circumferential lateral surface is radial gradual face.
The circumferential area of the radial flow path is 0.14m2 ~0.3m2Between.
Collection mist of oil cassette bottom portion is equipped with oil scraper ring, and crack is formed between oil scraper ring and thrust collar.
Road contact seal pad is arranged in the inside oil groove lid radially inner side.
The rotating blading be after to curved surface bucket, deflector is arranged in bottom.
A kind of turbine-generator units thrust bearing air-tight structure of the utility model, has following technical effect that
1), using aerodynamic principle, the mist of oil generated in oil groove is oriented to oil mist collecting device with high-speed flow, and
It prevents external negative pressure from influencing the exhausting effect of rotating blading using contact seal, so that mist of oil is not leaked, effectively avoid contact with formula
Sealing machine abrasion and rotor rotate and to form negative pressure mist of oil in oil groove is caused to leak, to reach effective sealing effect indirectly, keep away
Exempt from the adverse effects of the factors to sealing effect such as abrasion, mechanical swing.
2), this covering device is provided with supply air system, compensates air quantity while fan blade air-breathing, avoids because wind speed is inadequate
Sealing effect is not achieved, makes the generating set of high and low revolving speed that the desired effect of device can be achieved.
3), the special designing of the blade structure of this covering device, not only can be by inside outside air intake system, but also can make gas
Stream is uniformly thrown away to radial direction.
4), the fan blade of this covering device is directly anchored in the groove of thrust collar, directly generates diameter aweather after unit starting, resistance
Mist of oil has been kept off to external diffusion.
5), this covering device devises adjustment screw, can sink caused by effective compensation device own wt, and prevent from hanging
The too long generation vibration of arm generates harm to equipment.
6), the vertical range of setting 10mm ~ 20mm between this covering device thrust collar 5 and inside oil groove lid 2 can guarantee and turn
The set equipment is not touched when son maintenance.
7), mist of oil absorption system is set, separate the oil liquid in mist of oil, recoverable, and equipment pollution and ring can be prevented
Border pollution.
8), this covering device, which can be bolted, covers direct installation in unrefined oil tank, keeps crude oil slot cover still available, reaches
Effects of energy saving and emission reduction.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples:
Fig. 1 is the cross-sectional view of the utility model.
Fig. 2 is the partial enlarged view in the utility model at A.
Fig. 3 is inside oil groove lid and supply air system, the connection schematic diagram of mist of oil absorption system in the utility model.
Fig. 4 is schematic diagram of the rotating blading in thrust collar in the utility model.
Fig. 5 is the partial enlarged view in Fig. 4 at B.
Fig. 6 is the schematic diagram of rotating blading in the utility model.
In figure: rotating blading 1, inside oil groove lid 2, supply air system 3, mist of oil absorption system 4, thrust collar 5, thrust bearing oil sump 6；
Splitted structure 201, connection bolt 202, fastening bolt 203, the first gasket 204, adjustment screw 205, outside oil groove lid 206,
Contact seal pad 207, fan blade room 208, radial flow path 209 collect mist of oil box 210, and winding pipe 301, converge endless tube 302, send
Wind branch pipe 303, axial flow blower 304, outlet air branch pipe 401, converge endless tube 402, exhaust branch pipe 403, electrostatic oil gas separator
404, radial gradual face 7, big axis 8, lower bearing bracket 9, deflector 10.
Specific embodiment
As shown in figures 1 to 6, a kind of turbine-generator units thrust bearing air-tight structure mainly includes rotating blading 1, inside
Oil groove lid 2, supply air system 3, mist of oil absorption system 4.Specifically:
Rotating blading 1 be after to curved surface blade profile, bottom is arranged deflector 10, totally 36 (according to obtained by simulation calculation).36
Piece rotating blading 1 is uniformly welded in 5 groove of thrust collar, in the big axis rotary course of random groups, forms diameter in radial flow path 209
To high-speed flow.
The inside oil groove lid 2 is made of 12 splitted structures 201, is sealed between each splitted structure 201 and using company
Connecting bolt 202 is spliced into a full circle.Inside oil groove lid 2 is fixed on the outside of original on oil groove lid 206 by fastening bolt 203, and
First gasket 204 is set between inside oil groove lid 2 and outside oil groove lid 206, while oil groove lid 206 installs several tune additional on the outside
Whole screw rod 205, to guarantee that outside oil groove lid 206 is horizontal.And it is set at 2 radially inner side of inside oil groove lid and 5 contact connectio of thrust collar
2 contact seal pads 207 are set, external negative pressure is prevented to influence the exhausting effect of rotating blading 1.
After the installation of inside oil groove lid 2,3 segment spaces of inside oil groove lid 2 and the formation of 5 boundary of thrust collar: fan blade room 208,
209 sum aggregate mist of oil box 210 of radial flow path.The fan blade room 208 is fan blade revolution space, and rotating blading 1 and fan blade room 208 are pushed up
Portion designs certain altitude, meets the rotor requirement of unit top；The circumferential space of the radial flow path 209 is smaller, is conducive to generate high speed
Air-flow；It is described integrate mist of oil box 210 as high-speed flow seal mist of oil position, bottom design an oil scraper ring 211, oil scraper ring 211 with
A small gap is designed between thrust collar, the mist of oil for generating thrust bearing oil sump 6 is upwardly into collection mist of oil box 210 along thrust collar.
201 circumferential lateral surface of each splitted structure of the inside oil groove lid 2 is radial gradual face 7, the inside oil groove lid 2 at this
Interior formation collects mist of oil box 210, and this design can export along a tangential direction gas in collection mist of oil box 210, and in tip designs one
Round exhaust outlet, exhaust outlet are connect with mist of oil absorption system 4.
Fan blade room 208 top design, one air inlet of each splitted structure 201 of the inside oil groove lid 2, with air-supply system
3 connection of system.
The supply air system 3 include the 12 confluence endless tube 302,2 of winding pipe 301,1 first air-supply wind branch pipes 303,
2 axial flow blowers 304, the air-flow that axial flow blower generates comes together in the first confluence endless tube 302 by blowpipe 303, and passes through
The winding pipe 301 being connected with 201 air inlet of splitted structure reaches in 2 fan blade room of inside oil groove lid, supplements sky for rotating blading 1
Gas.
The mist of oil absorption system 4 includes 12 outlet air branch pipes, 401,1 second confluence 402,4 exhaust branch pipes of endless tube
403 and 4 electrostatic oil gas separators 404, outlet air branch pipe 401 are connected with 201 exhaust outlet of splitted structure, in radial flow path 209
Gas is discharged by outlet air branch pipe 401, and enters electrostatic mist of oil separation dress by the second confluence endless tube 402 and exhaust branch pipe 403
404 are set, the oil liquid in mist of oil gas is precipitated and is collected by electrostatic oil gas separator 404, and air is discharged.Electrostatic mist of oil separation dress
Set 404 model HCE-W1.
Fan blade room 208 is entered by the air that axial flow blower 304 inputs, accelerates and be oriented to the diameter of generation by rotating blading 1
To air-flow after flowing through radial flow path 209, the mist of oil that axis rises is blowed into collection mist of oil box 210, is divided by mist of oil absorption system 4
From collecting oil liquid and excluding air, it can guarantee that mist of oil does not flow to fan blade room, mist of oil spilling do not occur.
Claims (10)
1. a kind of turbine-generator units thrust bearing air-tight structure, it is characterised in that: including inside oil groove lid (2), inside oil
Slot cover (2) radially inner side and thrust collar (5) are tightly connected, and oil groove lid (2) radial outside and outside oil groove lid (206) sealing connect
It connects, inside oil groove lid (2) and thrust bearing oil sump (6) boundary form air flow channel, and air flow channel includes fan blade room (208), radial flow
Road (209) and collection mist of oil box (210)；The fan blade room (208) is located in thrust collar (5) groove, fan blade room (208) inner circumferential point
The multiple rotating bladings of cloth (1), rotating blading (1) and unit rotate jointly generation radial air flow；The radial flow path (209) is laterally
Setting, and high-speed flow is conducted to collection mist of oil box (210)；The collection mist of oil box (210) is connected to mist of oil absorption system (4), will
Collection is discharged in the mist of oil collected in mist of oil box (210).
2. a kind of turbine-generator units thrust bearing air-tight structure according to claim 1, it is characterised in that: the wind
Leaf chamber (208) is connected to supply air system (3)；Supply air system (3) is for supplement in the fan blade room (208) of oil groove lid (2) inwardly
Air.
3. a kind of turbine-generator units thrust bearing air-tight structure according to claim 2, it is characterised in that: described to send
Wind system (3) includes axial flow blower (304), and axial flow blower (304) successively converges endless tube (302) with blowpipe (303), first
Connection, confluence endless tube (302) circumferentially connect more winding pipes (301), winding pipe (301) and fan blade room (208) air inlet
Connection.
4. a kind of turbine-generator units thrust bearing air-tight structure according to claim 1, it is characterised in that: the oil
Mist absorption system (4) includes electrostatic oil gas separator (404), electrostatic oil gas separator (404) successively with exhaust branch pipe
(403), the second confluence endless tube (402) connection, the second confluence endless tube (402) circumferentially connect more outlet air branch pipes (401), outlet air branch
Pipe (401) is connected to collection mist of oil box (210) exhaust outlet.
5. a kind of turbine-generator units thrust bearing air-tight structure according to claim 1, it is characterised in that: in described
Side oil groove lid (2) is spliced into full circle by multiple splitted structures (201) sealing.
6. a kind of turbine-generator units thrust bearing air-tight structure according to claim 5, it is characterised in that: described point
Valve structure (201) circumferential lateral surface is radial gradual face (7).
7. a kind of turbine-generator units thrust bearing air-tight structure according to claim 1, it is characterised in that: the diameter
It is 0.14m to the circumferential area of runner (209)2 ~0.3m2Between.
8. a kind of turbine-generator units thrust bearing air-tight structure according to claim 1, it is characterised in that: the collection
Mist of oil box (210) bottom is equipped with oil scraper ring (211), forms crack between oil scraper ring (211) and thrust collar (5).
9. a kind of turbine-generator units thrust bearing air-tight structure according to claim 1, it is characterised in that: in described
2 contact seal pads (207) are arranged in side oil groove lid (2) radially inner side.
10. a kind of turbine-generator units thrust bearing air-tight structure according to claim 1, it is characterised in that: described
Rotating blading (1) be after to curved surface bucket, deflector (10) are arranged in bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820853963.XU CN208486970U (en) | 2018-06-04 | 2018-06-04 | A kind of turbine-generator units thrust bearing air-tight structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820853963.XU CN208486970U (en) | 2018-06-04 | 2018-06-04 | A kind of turbine-generator units thrust bearing air-tight structure |
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| Publication Number | Publication Date |
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| CN208486970U true CN208486970U (en) | 2019-02-12 |
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| CN201820853963.XU Active CN208486970U (en) | 2018-06-04 | 2018-06-04 | A kind of turbine-generator units thrust bearing air-tight structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757272A (en) * | 2018-06-04 | 2018-11-06 | 中国长江电力股份有限公司 | A kind of turbine-generator units thrust bearing air-tight structure and method |
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2018
- 2018-06-04 CN CN201820853963.XU patent/CN208486970U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757272A (en) * | 2018-06-04 | 2018-11-06 | 中国长江电力股份有限公司 | A kind of turbine-generator units thrust bearing air-tight structure and method |
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