CN202266363U - Oil tank cap capable of preventing oil mist - Google Patents
Oil tank cap capable of preventing oil mist Download PDFInfo
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- CN202266363U CN202266363U CN2011203688142U CN201120368814U CN202266363U CN 202266363 U CN202266363 U CN 202266363U CN 2011203688142 U CN2011203688142 U CN 2011203688142U CN 201120368814 U CN201120368814 U CN 201120368814U CN 202266363 U CN202266363 U CN 202266363U
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- oil
- fuel tank
- tank cap
- mist
- condensation
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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
The utility model provides an oil tank cap capable of preventing oil mist. The oil tank cap is circular, and is arranged on the top of a guide bearing oil tank; the inner rim of the oil tank cap is arranged close to a main shaft, and is provided with a circle of condensed oil return device; the condensed oil return device is a shell with a three-face structure, and comprises a top plate, a base plate and a side plate; a sealing device is arranged at a joint between the top plate of the shell and the main shaft; the base plate of the shell is an oil return pore plate; a circular condensing cavity is formed between the shell with the three-face structure and the main shaft; and a plurality of condensation baffle plates are symmetrically arranged in the condensing cavity along the radial direction and the circumferential direction. According to the oil tank cap, the problem of oil mist leakage of the conventional guide bearing oil tank is solved completely; meanwhile, an aim that oil does not exist on the baffle plates in the oil tank is fulfilled without adding other sets of equipment; and the oil tank cap capable of preventing oil mist is self-cleaning and maintenance-free, so that the cleaning and maintenance workload of a power station is reduced.
Description
Technical field
The utility model relates to the power generating equipment industry, specifically is the fuel tank cap of a kind of anti-mist of oil of on the hydraulic generator unit, using.
Background technique
Like Fig. 1, shown in Figure 2; At present, the guide bearing fuel tank 2 of hydraulic generator unit is arranged on the connection part of main shaft 7 and bearing shell 3; Bearing shell 3 holds out against fixed main shaft 7 through horizontally disposed bearing bracket 1; Comprise bearing bracket 1, bearing shell 3 and main shaft 7 these several parts in the fuel tank 2, fuel tank 2 inside fill lubricant oil, and its oil level M is above bearing bracket 1.When guide bearing in running, because the extruding and the relative movement of 7 pairs of bearing shell 3 surface of contact of main shaft with the heat that produces some, causes the lubricant oil vaporization to produce mist of oil.In addition; At the oil level M of fuel tank 2 with the upper part; Main shaft 7 surface adsorption one deck oil film; The centrifugal force that produces when the high speed rotating of main shaft 7 is during greater than the adsorption force of oil film, and oil film is escaped at a high speed from main shaft 7 surfaces with the mode of oil droplet, and the oil droplet that partial volume is small gets in the above air of fuel tank 2 pasta M and forms mist of oil.
At this moment just need sealing effect preferably fuel tank cap 4 its mist of oil N is blocked in the inside of fuel tank 2, the fuel tank cap 4 of existing technology mainly contains: two kinds of technological schemes as depicted in figs. 1 and 2.
Scheme one: fuel tank cap 4 adopts the individual layer steel plate structure, locates to be provided with labyrinth seal 5 in the fuel tank cap 4 and the joint clearance of main shaft 7.Owing to have certain clearance between labyrinth seal 5 and the main shaft 7; 4 pairs of grease proofing fog effects of the fuel tank cap of this structure are very limited, when reality is used, can produce a large amount of mist of oil N in the fuel tank 2; Leak out fuel tank 2 through labyrinth seal 5, unit is caused pollution to a certain degree.This programme can't thoroughly solve the leakage problem of mist of oil N; Gap control between fuel tank cap 4 and the main shaft 7 is comparatively strict simultaneously; Generally, also need on fuel tank cap 4, set up air-strainer, prevent that oil appears getting rid of in the oil baffle place in the fuel tank 2 to guarantee fuel tank cap 4 internal and external pressure balances.
Scheme two: fuel tank cap 4 adopts the individual layer steel plate structures, at the junction point of fuel tank cap 4 and main shaft 7 contact seal is set, and contact seal is a sealing block 8 that adopts composite material, through bolt fastening on the surface of fuel tank cap 4.This structure can effectively be sealed mist of oil N at the initial stage of using; But sealing block 8 can be with wearing and tearing service time gradually, and sealing piece 8 will lose sealing effect after the general some months, need change it; Otherwise can cause a large amount of mist of oil N to leak equally, unit is polluted.The fuel tank cap 4 of this structural type; Need frequent change sealing block 8, cause the pause of manufacture cycle, also can produce the waste of great amount of manpower and material resources; Owing to adhere to a large amount of greasy dirts on the sealing block 8; Replacing is very required great effort time-consuming, can cause the pollution of environment simultaneously, is unfavorable for the requirement of national energy-saving and emission-reduction.The performance requirement of two pairs of compound seal pieces 8 of scheme is higher, otherwise sealing block 8 replacings are frequent, and the sliding friction meeting between sealing block 8 and the main shaft 7 simultaneously produces heat, and axle is that ferry-boat increases, and it is unfavorable that unit operation is brought.Heat also is delivered to bearing shell 3 through main shaft 7, and is unfavorable to bearing shell 3 operations.Simultaneously, this structure must be set up air-strainer to guarantee fuel tank cap 4 internal and external pressure balances on fuel tank cap 4, prevents that oil appears getting rid of in the oil baffle place in the fuel tank.Air-strainer needs often to clean, and causes the pause of manufacture cycle, also can produce the waste of great amount of manpower and material resources.
Summary of the invention
The purpose of the utility model is to provide a kind of anti-mist of oil fuel tank cap convenient and practical, on the guide bearing on the hydraulic generator unit.
The technological scheme that the utility model adopted is:
A kind of fuel tank cap of anti-mist of oil; Be circular, be arranged on the top of guide bearing fuel tank, its inner rim is pressed close to main shaft and is installed, and said fuel tank cap inner edge is provided with a circle condensation oil return apparatus; This condensation oil return apparatus is the housing of three structures; Comprise top board, base plate and side plate, the place, joint clearance of its middle shell top board and main shaft is provided with seal arrangement, and the housing base plate is the oil return orifice plate; Constitute a circular condensation cavity between the housing of three structures and the main shaft, radially, circumferentially be symmetrically arranged with some condensation baffle plates in the condensation cavity.
Said condensation baffle plate is obliquely installed, and the angle between the oil return orifice plate is 45～80 °, and the direction of this angle and main axis rotation are in the opposite direction.
Said seal arrangement is a broach shape Sealing, and its inside vertically is provided with the condensate tank(trap) of broach shape, and the bottom of each condensate tank(trap) is provided with spill port.
The housing of said condensation oil return apparatus and fuel tank cap are integrative-structures.
The beneficial effect that the utility model produced is:
The anti-mist of oil fuel tank cap of the utility model through structural innovation, has thoroughly solved the mist of oil leakage problem of the fuel tank existence of guide bearing, can not set up miscellaneous equipment simultaneously and reach the purpose that oil is not got rid of at fuel tank internal baffle place.Through increasing the condensation cavity of special construction, make the mist of oil oil droplet that congeals into, and get back to fuel tank through spill port, no longer leak in the environment beyond the fuel tank cap, solved the pollution problem of mist of oil to environment.This fuel tank cap is that automatically cleaning, zero dimension are protected simultaneously, has reduced the cleaning maintenance workload in power station.Can the gap between fuel tank cap and the main shaft suitably be amplified simultaneously, be beneficial to tonifying Qi in fuel tank, can keep the inside and outside air pressure balance of fuel tank, prevent guide bearing when operation in the fuel tank oil baffle place oil condition appears getting rid of.
Description of drawings
Fig. 1 is the structural representation of existing technology scheme one;
Fig. 2 is the structural representation of existing technology scheme two;
Fig. 3 is the structural representation of the fuel tank cap of the utility model;
Fig. 4 is that the A of Fig. 3 is to view;
Fig. 5 is that the A in main condenser chamber of the utility model is to view;
Fig. 6 is the layout schematic representation of the utility model condensation baffle plate;
Fig. 7 is the half section structural representation of the utility model broach condensate tank(trap) and main condenser cavity segment;
Label is represented among the figure: 1-bearing bracket, 2-fuel tank, 3-bearing shell, 4-fuel tank cap, the sealing of 5-stripping fork, 6-vent, 7-main shaft, 8-sealing block, 9-broach shape Sealing, 10-condensation cavity, 11-spill port, 12-fuel tank internal baffle, 13-top board, 14-base plate, 15-condensation baffle plate; M-oil level, N-mist of oil, L-oil droplet, the angle between α-condensation baffle plate and the base plate.
Embodiment
The utility model provides a kind of fuel tank cap of anti-mist of oil, and this fuel tank cap 4 is circular, is arranged on the top of guide bearing fuel tank 2, and the inner edge of fuel tank cap 4 presses close to main shaft 7 and install, and keeps certain clearance.The inner edge of fuel tank cap 4 is provided with a circle condensation oil return apparatus; This condensation oil return apparatus is the housing of three structures; Comprise top board, base plate and side plate, housing is fixedly connected on fuel tank cap 4 lids, can adopt integrated mode or adopt link to interconnect or the like mode.In this embodiment, for guaranteeing the sealing of condensation oil return apparatus, the lid of its base plate 14 and side plate and fuel tank cap 4 is structure as a whole, adopts integral type welding fabrication technology, and side plate is the outer rim of condensation oil return apparatus.
In this embodiment; Because the base plate 14 of condensation oil return apparatus is structure as a whole with the lid of fuel tank cap 4; Make the condensation oil return apparatus protrude fuel tank cap 4 lid certain distances; Condensation oil return apparatus top board 13, base plate 14 and side plate constitute the housing of three structures, this housing closely contacts with main shaft 7, between cross section of formation, space be circular condensation cavity 10, condensation cavity 10 inside radially, circumferentially are symmetrically arranged with some condensation baffle plates 15 along annulus.This condensation baffle plate 15 is obliquely installed, and the angle between the base plate 14 is 45～80 °, and the sense of rotation of the direction of this angle and main shaft 7 is opposite.The angle of preferred α is 60 °, can reach best condensing reflux effect.
Wherein, top board 13 is provided with seal arrangement with the place, joint clearance of main shaft 7, and the sealing device is a broach shape Sealing 9, and its inside vertically is provided with the hoop condensate tank(trap) of the multilayer broach shape of broach shape, and the bottom of each condensate tank(trap) has spill port 11.Allow certain interval between Sealing 9 and the main shaft, so that fuel tank 2 and ambient pressure balance.
The cardinal principle that the anti-mist of oil fuel tank cap of the utility model can make mist of oil N not overflow is: because increased the condensation cavity 10 of special construction; Make the mist of oil N oil droplet that congeals into; And turn back to fuel tank through spill port 11, reach and prevent that effectively mist of oil N from leaking out the purpose of fuel tank.
Concrete working method is following:
Because fuel tank cap 4 is a static part, main shaft 7 is a rotary component, has certain clearance between fuel tank cap 4 and the main shaft 7, and mist of oil N at first enters into condensation cavity 10 through the gap between base plate 14 and the main shaft 7.
The motion mode of mist of oil N in condensation cavity 10 is: under the drive of main shaft 7 rotations, mist of oil N forms rotation circulation.Mist of oil N in the process of circulation, run into top board 13 and condensation baffle plate 15 after, a part of mist of oil N is condensed into oil droplet; The mist of oil N that residue is not condensed will proceed circulation; But in the circulation process, it is oil droplet with condensation baffle plate 15 that mist of oil N continues contact top board 13, thereby makes mist of oil N reduce gradually.Through repeatedly with the contacting of top board 13 and condensation baffle plate 15 after, most mist of oil N will be condensed into oil droplet.Oil droplet will flow back in the fuel tank 2 through the spill port on the base plate 14 11.The mist of oil N of minute quantity possibly continue to rise to broach shape Sealing 9; This position is provided with the hoop condensate tank(trap) of multilayer broach shape along short transverse; And the bottom of each layer condensate tank(trap) is provided with spill port 11, can play the blockading and condensation of mist of oil N, and is final; The oil droplet of condensation through the spill port 11 of broach shape Sealing 9 bottoms and the spill port 11 on condensation cavity 10 base plates 14, flow back among the oil groove in the fuel tank 2 successively.
Claims (4)
1. the fuel tank cap of an anti-mist of oil; Be circular, be arranged on the top of guide bearing fuel tank, its inner rim is pressed close to main shaft and is installed, and it is characterized in that: said fuel tank cap inner edge is provided with a circle condensation oil return apparatus; This condensation oil return apparatus is the housing of three structures; Comprise top board, base plate and side plate, the place, joint clearance of its middle shell top board and main shaft is provided with seal arrangement, and the housing base plate is the oil return orifice plate; Constitute a circular condensation cavity between the housing of three structures and the main shaft, radially, circumferentially be symmetrically arranged with some condensation baffle plates in the condensation cavity.
2. the fuel tank cap of anti-mist of oil according to claim 1, it is characterized in that: said condensation baffle plate is obliquely installed, and the angle between the oil return orifice plate is 45～80 °, and the direction of this angle and main axis rotation are in the opposite direction.
3. the fuel tank cap of anti-mist of oil according to claim 1, it is characterized in that: said seal arrangement is a broach shape Sealing, and its inside vertically is provided with the condensate tank(trap) of broach shape, and the bottom of each condensate tank(trap) is provided with spill port.
4. the fuel tank cap of anti-mist of oil according to claim 1, it is characterized in that: the housing of said condensation oil return apparatus and fuel tank cap are integrative-structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203688142U CN202266363U (en) | 2011-09-30 | 2011-09-30 | Oil tank cap capable of preventing oil mist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203688142U CN202266363U (en) | 2011-09-30 | 2011-09-30 | Oil tank cap capable of preventing oil mist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266363U true CN202266363U (en) | 2012-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203688142U Expired - Fee Related CN202266363U (en) | 2011-09-30 | 2011-09-30 | Oil tank cap capable of preventing oil mist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266363U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410128A (en) * | 2011-09-30 | 2012-04-11 | 东方电气集团东方电机有限公司 | Oil-mist-proof fuel tank cap |
| CN103216720A (en) * | 2013-05-08 | 2013-07-24 | 张宏伟 | Lubricating-oil mist discharging device for oil groove of sliding bearing of generator set |
| CN103615541A (en) * | 2013-11-29 | 2014-03-05 | 张宏伟 | Device preventing oil mist of generator bearing from overflowing |
| CN110553035A (en) * | 2019-09-03 | 2019-12-10 | 东方电气集团东方电机有限公司 | oil mist leakage prevention method |
-
2011
- 2011-09-30 CN CN2011203688142U patent/CN202266363U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410128A (en) * | 2011-09-30 | 2012-04-11 | 东方电气集团东方电机有限公司 | Oil-mist-proof fuel tank cap |
| CN103216720A (en) * | 2013-05-08 | 2013-07-24 | 张宏伟 | Lubricating-oil mist discharging device for oil groove of sliding bearing of generator set |
| CN103216720B (en) * | 2013-05-08 | 2015-05-06 | 张宏伟 | Lubricating-oil mist discharging device for oil groove of sliding bearing of generator set |
| CN103615541A (en) * | 2013-11-29 | 2014-03-05 | 张宏伟 | Device preventing oil mist of generator bearing from overflowing |
| CN103615541B (en) * | 2013-11-29 | 2016-08-17 | 张宏伟 | Prevent the device that dynamo bearing mist of oil overflows |
| CN110553035A (en) * | 2019-09-03 | 2019-12-10 | 东方电气集团东方电机有限公司 | oil mist leakage prevention method |
| CN110553035B (en) * | 2019-09-03 | 2021-02-09 | 东方电气集团东方电机有限公司 | Oil mist leakage prevention method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20140930 |
|
| EXPY | Termination of patent right or utility model |