CN206302248U - A kind of box high-speed engine bearing leak-proof oil structure - Google Patents
A kind of box high-speed engine bearing leak-proof oil structure Download PDFInfo
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- CN206302248U CN206302248U CN201621383936.8U CN201621383936U CN206302248U CN 206302248 U CN206302248 U CN 206302248U CN 201621383936 U CN201621383936 U CN 201621383936U CN 206302248 U CN206302248 U CN 206302248U
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- bearing
- connecting pipeline
- end cover
- leak
- oil
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Abstract
A kind of box high-speed engine bearing leak-proof oil structure, bearing with end cover, bearing cavity including connecting pipeline and on main shaft, connecting pipeline includes lower communicating tube road and upper connecting pipeline, lower communicating tube road one end is connected by bearing with end cover with bearing cavity, the other end connection centrifugal blower on lower communicating tube road；Centrifugal blower is located at bearing with end cover top, and centrifugal blower is connected with upper connecting pipeline, and air filter is provided with upper connecting pipeline, and the upper connecting pipeline opposite side is connected with the oil-out of bearing return line.Its is rational in infrastructure, reliable, easy for installation, pressure differential that can be between active balance bearing cavity and bearing with end cover, reduces bearing oil leak；The fogging oil condensation that the application of air filter will can be extracted out in bearing cavity, is back to return line, can also discharge the air pressure that centrifugal blower is extracted out in addition, it is to avoid gases at high pressure are back to bearing cavity from return line.
Description
Technical field
The utility model is related to a kind of Oil-leakage-preventistructure structure of motor, particularly a kind of box high-speed power generation machine bearing oil-leakage-prevention knot
Structure, belongs to motor device field.
Background technology
Box type electric generator saves civil engineering cost less because being taken with place in recent years, and installation, debugging cycle are short at the scene, inspection
The advantages of looking into easy to maintenance, is widely used.But because the rotor speed of box type electric generator is high, when rotor fan is rotated, fan
Flow to side to be forced to be changed into higher-pressure region, other form negative pressuren zone to motor cavity everywhere, cause bearing cavity to be changed into relatively high pressure
Area, bearing with end cover can bear huge negative pressure.Due to bearing with end cover and the pressure differential of bearing cavity, the lubricating oil of Bearing inner is in pressure
In the presence of power difference, it is sucked out and is atomized by the gap between bearing cap and machine shaft, it is finally fixed in rotor fan, motor
The positions such as rotor coil ends condense into oil droplet, and on the one hand the electric machine rotor coil insulation life-span is impacted, and destroy motor
Service life, on the other hand causes site environment to pollute the waste with lubricating oil.Reported according to Patents documents, our unit Shen
Notification number please is in " 2 pole box type electric generator bearing with end cover leak-proof arrangement " of CN102983662B, leak-proof arrangement needs
Breather pipe is connected on inner reinforced plate by outer end cap, makes the internal diameter of inner reinforced plate too small, cause motor stator to throw shell side to can only
From side enter, be mounted opposite it is cumbersome, take installing space it is big；The notification number of application is the " motor shaft of CN204597693U
Hold anti-oil leakage device " in, using dissection type ring baffle, motor cavity and sliding bearing inner chamber are formed logical by steam hose
Air circuit, the device is higher to the seal request of the ventilating joint of the fastening and steam hose of dissection type ring baffle.
Based on disadvantages mentioned above, the problem of box type electric generator bearing oil leak governs the popularization and application of box high-speed engine.
Utility model content
It is not enough that the purpose of this utility model is directed to prior art, there is provided a kind of rational in infrastructure, reliable, easy for installation
A kind of box high-speed engine bearing leak-proof oil structure, solve existing Bearing inner lubricating oil because the effect of pressure differential is from end cap
Gap spills inflow motor and pollutes, and destruction motor is the problems such as insulate.
The technical scheme that the utility model is used is：The box high-speed engine bearing leak-proof oil structure, including connection
Pipeline and the bearing with end cover on main shaft, bearing cavity, the connecting pipeline include lower communicating tube road and upper connecting pipeline, institute
State lower communicating tube road one end to be connected with bearing cavity by bearing with end cover, the other end connection centrifugation wind on the lower communicating tube road
Machine；The centrifugal blower is located at bearing with end cover top, and centrifugal blower is connected with upper connecting pipeline, is installed on the upper connecting pipeline
There is air filter, the upper connecting pipeline opposite side is connected with the oil-out of bearing return line.
The centrifugal blower is fixed on bearing upper cover plate.
In order to be preferably fixed to centrifugal blower, centrifugal blower is fixed on bearing upper cover plate using bolt.
Air pressure for the ease of centrifugal blower is extracted out is discharged, while the atomization oil cooling that will be extracted out in bearing cavity
It is solidifying, return line is back to, the air filter is installed vertically on connecting pipeline.
In order to ensure fogging oil that will be extracted out in bearing cavity thoroughly condensing reflux to return line, the upper communicating pipe
The air filter on road is preferred to install three.
In order that connecting pipeline reaches with bearing with end cover being tightly connected, the port on the lower communicating tube road is adopted with bearing with end cover
Take sealing-in to fix, lower communicating tube road is interconnected with bearing cavity.
In order to the oil that will be extracted out from bearing cavity is recycled, the purpose not wasted, the bearing return line are reached
Oil inlet, oil-out be connected with bearing fuel tank.
The utility model has the advantage that and good effect is：
1st, the input of centrifugal blower, subnormal ambient is pumped into by bearing cavity, can be balanced because rotor fan inhales wind-induced
Pressure differential between bearing cavity and bearing with end cover, effectively reduces bearing oil leak.
2nd, the atomization oil cooling that on the one hand air filter installed on upper connecting line will can be extracted out in bearing cavity
It is solidifying, return line is back to, on the other hand the air pressure that centrifugal blower is extracted out is discharged, it is to avoid gases at high pressure are from oil return pipe
Road is back to bearing cavity.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is sectional views of the Fig. 1 along line A-A.
Specific embodiment
Concrete structure of the present utility model is described in detail according to Fig. 1, Fig. 2.The box high-speed power generation machine bearing oil-leakage-prevention knot
Structure, including connecting pipeline and the bearing with end cover on main shaft 1, bearing cavity 2, and connecting pipeline is divided into the He of lower communicating tube road 3
Upper connecting pipeline 4, for connecting bearing cavity 2 and centrifugal blower 5.Wherein the lower end on lower communicating tube road 3 by bearing with end cover 1 with
Bearing cavity 2 is connected, and the port on lower communicating tube road 3 can take fixed sealing-in mode to be connected with bearing with end cover 1；Lower communicating tube road
3 other end is centrifugal blower 5 of the top connection positioned at the top of bearing with end cover 1, the other end of centrifugal blower 5 and upper connecting pipeline
4 connections, form simple connected relation；At least one air filter 6 is installed on upper connecting pipeline 4 simultaneously, to what is passed through
Pressure-air is filtered, and is then back to the oil-out 7 of bearing return line, and the oil inlet 9 of bearing return line and axle
Fuel tank connection is held, bearing fuel tank is finally flowed back to by bearing return line.Centrifugal blower 5 is used and is bolted to bearing upper cover plate
On 8, in order to reach preferable filter effect, it is ensured that the fogging oil that will be extracted out in bearing cavity thoroughly condensing reflux to oil return pipe
Road, more efficient release air pressure, the air filter 6 of upper connecting pipeline 4 preferably right angle setting three side by side.
The utility model specific work process is as follows：
When box high-speed engine works, rotor fan is rotated, and fan flows to side and is changed into higher-pressure region, and other are each for motor cavity
Place forms negative pressuren zone, causes bearing cavity 2 to be changed into relatively high pressure area, because box type electric generator rotor speed is very high, bearing with end cover 1
Huge negative pressure can be born.Due to bearing with end cover 1 and the pressure differential of bearing cavity 2, the work of the lubricating oil of Bearing inner in pressure differential
Under, it is sucked out and is atomized by the gap between bearing cap and machine shaft, finally in rotor fan, electric machine rotor coil
The positions such as end condense into oil droplet.Therefore, it is necessary to open centrifugal blower 5 simultaneously when box high-speed engine works.
Centrifugal blower 5 is secured by bolts on bearing upper cover plate 8, and lower connecting line 3 is by bearing with end cover 1 and centrifugal blower
With bearing return line be connected centrifugal blower 5 by 2 connections, upper connecting line 4, and the lower end on lower communicating tube road 3 passes through bearing with end cover 1
Connected with bearing cavity 2, and the port on lower communicating tube road 3 can take fixed sealing-in, formation simply to connect back with bearing with end cover 1
Road.By centrifugal blower 5 during generator operation, bearing cavity 2 is pumped into subnormal ambient, is used to offset Power generator fan in bearing
The pressure differential of the negative pressure that end cap region is formed, balance bearing with end cover 1 and bearing cavity 2, makes bearing with end cover 1 and bearing cavity 2
Air pressure reaches identical, elimination oil leak power, so as to ensure that generator shaft bearing lubrication oil will not spill from end cover clearance.Therefore, it is possible to
Motor oil leak is effectively prevented, the service life of motor is improved, oil leaking pollution is reduced.
Air filter 6 is installed on upper connecting pipeline 4 simultaneously, the pressure-air for passing through can be filtered, will be from axle
The fogging oil condensation extracted out in inner chamber 2 is held, this is to there occurs atomization because oily its oil temperature of the extraction of centrifugal blower 5 is higher, is passed through
There is condensation during air filter 6 and fall into connecting pipeline 4, be then back to the oil-out 7 of bearing return line, be back to back
Oil pipe line, and the oil inlet 9 of bearing return line is connected with bearing fuel tank, and bearing oil is finally flowed back to by bearing return line
Case；On the other hand, air filter 6 can discharge the air pressure that centrifugal blower is extracted out, it is to avoid gases at high pressure are from oil return
Pipeline is back to bearing cavity.For the filter effect for having reached, it is ensured that the fogging oil that will be extracted out in bearing cavity is thoroughly cold
Solidifying to be back to return line, more efficient release air pressure, the air filter 6 of upper connecting pipeline 4 is preferably vertically pacified side by side
Fill three.
Claims (7)
1. a kind of box high-speed engine bearing leak-proof oil structure, including connecting pipeline and the bearing with end cover on main shaft, axle
Hold inner chamber, it is characterised in that：The connecting pipeline includes lower communicating tube road and upper connecting pipeline, and lower communicating tube road one end leads to
Cross bearing with end cover to be connected with bearing cavity, the other end connection centrifugal blower on the lower communicating tube road；The centrifugal blower is located at
Bearing with end cover top, centrifugal blower is connected with upper connecting pipeline, is provided with air filter on the upper connecting pipeline, it is described on
Connecting pipeline opposite side is connected with the oil-out of bearing return line.
2. a kind of box high-speed engine bearing leak-proof oil structure according to claim 1, it is characterised in that：The centrifugation
Blower fan is fixed on bearing upper cover plate.
3. a kind of box high-speed engine bearing leak-proof oil structure according to claim 2, it is characterised in that：The centrifugation
Blower fan is fixed using bolt.
4. a kind of box high-speed engine bearing leak-proof oil structure according to claim 1, it is characterised in that：The air
Cleaner is installed vertically on connecting pipeline.
5. a kind of box high-speed engine bearing leak-proof oil structure according to claim 1, it is characterised in that：The air
Cleaner has three.
6. a kind of box high-speed engine bearing leak-proof oil structure according to claim 1, it is characterised in that：The lower company
Sealing-in is taken to fix with bearing with end cover in the port on siphunculus road.
7. a kind of box high-speed engine bearing leak-proof oil structure according to claim 1, it is characterised in that：The bearing
Oil inlet, the oil-out of return line are connected with bearing fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621383936.8U CN206302248U (en) | 2016-12-16 | 2016-12-16 | A kind of box high-speed engine bearing leak-proof oil structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621383936.8U CN206302248U (en) | 2016-12-16 | 2016-12-16 | A kind of box high-speed engine bearing leak-proof oil structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206302248U true CN206302248U (en) | 2017-07-04 |
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ID=59215099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621383936.8U Active CN206302248U (en) | 2016-12-16 | 2016-12-16 | A kind of box high-speed engine bearing leak-proof oil structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206302248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552965A (en) * | 2019-08-15 | 2019-12-10 | 杨荣国 | Oil leakage prevention method for bearing seat and oil leakage prevention bearing seat |
-
2016
- 2016-12-16 CN CN201621383936.8U patent/CN206302248U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110552965A (en) * | 2019-08-15 | 2019-12-10 | 杨荣国 | Oil leakage prevention method for bearing seat and oil leakage prevention bearing seat |
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