CN205841111U - Double ball bearings and double-fed asynchronous generator - Google Patents

Abstract

The utility model discloses a kind of double ball bearing, in double-fed asynchronous generator, described pair of ball bearing is provided with pouring orifice and oil drain out；Described pouring orifice is opened on the bearing (ball) cover of the wheel hub side being applicable to close described double-fed asynchronous generator of described pair of ball bearing.Above-mentioned pair of ball bearing ensure that lubricating uniform before and after double ball bearing, reduces the inter deterioration caused because lubrication is not in place inside double ball bearing, improves whole pair of ball bearing lubricant effect.This utility model is also disclosed a kind of double-fed asynchronous generator.

Description

Double ball bearings and double-fed asynchronous generator

Technical field

This utility model relates to wind turbine power generation technical field, particularly relates to the double ball bearing of a kind of blower fan and double-fed asynchronous Electromotor.

Background technology

In large-scale double-fed asynchronous generator design process, in order to ensure that wheel hub and blade prop up with tower with the center of gravity in cabin Support center of gravity keeps consistent, and the blower fan whole driving-chain structure being connected with wheel hub and horizontal plane maintain 5 ° of elevations angle, to ensure blower fan Cabin and the balance of wheel hub in running, main shaft bearing keeps 5 ° to face upward as a part for driving-chain as horizontal plane Angle.Main shaft bearing gradually rises in rotation process middle (center) bearing temperature, and lubricant grease viscosity is substantially reduced, and mobility strengthens, because of Main shaft bearing pouring orifice bit selecting heart position within the bearing and double ball bearing thickness are wider, cause main shaft bearing to moisten near hub side Sliding appearance dry grinding phenomenon not in place, too much overflows from sealing ring gap near gear box side oils and fats.

Main shaft bearing bottom centre is provided with φ 13mm outage, relies on the mobility Self-discharged of oils and fats, but existing producing Under complicated weather conditions, especially under the natural environment of wind energy turbine set high altitudes and cold, Bearing inner oils and fats due to low temperature or Chromic trouble is shut down to be occurred hardening or viscosity increase, and in causing bearing, waste and old oils and fats and abrasive dust cannot flow out from oil drain out, shape One-tenth blocks, and accelerates Bearing inner fretting wear.The new oils and fats of injection bearing inner chamber is formed reveal at the oil-in oil sealing that just rises brokenly, broken It is broken bearing seal and causes greasy dirt dye around bearing.If things go on like this, the bearing damage that main shaft bearing causes because of lubrication problem Problem will gradually highlight, and bring huge economic loss to wind energy turbine set.

Utility model content

The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, it is provided that the double ball of a kind of blower fan Bearing and double-fed asynchronous generator, it is possible to ensure lubricating uniform before and after double ball bearing, reduce inside double ball bearing because of lubrication Not in place and the inter deterioration that causes, improves whole pair of ball bearing lubricant effect.

For solving above-mentioned technical problem, technical solution adopted in the utility model is: a kind of double ball bearings, for double In feedback asynchronous generator, described pair of ball bearing is provided with pouring orifice and oil drain out；Described pouring orifice is opened in described pair of ball Being applicable on the bearing (ball) cover of the wheel hub side of described double-fed asynchronous generator of bearing.

Preferably, described pouring orifice is screwed hole.

Preferably, the number of described pouring orifice is two or more.

Preferably, the external outer silk of described pouring orifice leads directly to ferrule fitting, and enters scene 2 allotter and grease pump by one Lubricating oil pipe is connected.

Preferably, also include that fat suction device, the oil-in of described fat suction device are connected with described oil drain out.

Preferably, described oil drain out is provided with out patch plug；The oil-in of described fat suction device is provided with fast patch plug.

Preferably, oil sump tank is also included；Described oil sump tank is connected with the oil-out of described fat suction device.

This utility model is also disclosed a kind of double-fed asynchronous generator, including above-mentioned any one pair of ball bearing.

Use and have the beneficial effects that produced by technique scheme: by the position of pouring orifice by the center of double ball bearings Position, changes into, on the bearing (ball) cover of the wheel hub side of double-fed asynchronous generator, not affecting the mechanics of whole pair of ball bearing Structure.In double ball bearing rotary courses, owing to the existence at the bearing elevation angle makes oils and fats flow from high to low, and pouring orifice is opened It is located at the position that double ball bearing is higher, therefore can change double ball bearing internal lubrication oils and fats mobility status, it is ensured that double rollings Lubricating uniform before and after pearl bearing, reduces the inter deterioration caused inside double ball bearing because lubrication is not in place, improves whole double Ball bearing lubricant effect.

Accompanying drawing explanation

Fig. 1 is the structural representation of double one embodiment of ball bearing of this utility model；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is the top view of Fig. 1；

Fig. 4 is the fundamental diagram of fat suction device in double one embodiment of ball bearing of this utility model；

Fig. 5 is fat suction device control system schematic diagram in double one embodiment of ball bearing of this utility model；

Fig. 6 is one embodiment middle (center) bearing lubrication schematic diagram of the double ball bearing of this utility model.

Detailed description of the invention

With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.

Double ball bearings 100 in each embodiment may be incorporated in double-fed asynchronous generator below.Such as Fig. 1 to Fig. 3 Shown in, in an embodiment, double ball bearings are provided with pouring orifice 101 and oil drain out 102.Pouring orifice 101 is opened in double ball Being applicable on the bearing (ball) cover of the wheel hub side of double-fed asynchronous generator of bearing 100.By the position of pouring orifice 101 by double The center of ball bearing 100, changes into, on the bearing (ball) cover of the wheel hub side of double-fed asynchronous generator, not affecting whole The mechanical structure of double ball bearings 100.In double ball bearing 100 rotary courses, owing to the existence at the bearing elevation angle makes oils and fats Flow from high to low, and pouring orifice 101 is opened in the position that double ball bearing 100 is higher, therefore can change double ball bearing 100 internal lubrication oils and fats mobility status, it is ensured that lubricating uniform before and after double ball bearings 100, reduce double ball bearing 100 internal because of Lubricate inter deterioration that is not in place and that cause, improve whole pair of ball bearing 100 lubricant effect.

In one embodiment, pouring orifice 101 can be screwed hole.And the number of pouring orifice 101 can be one or two Above.Pouring orifice 101 can lead directly to ferrule fitting with external outer silk, and enters scene 2 allotter and grease pump lubricating oil pipe by one It is connected.

Concrete, double roller bearing 100 roller hub side bearing end caps make two M8 screwed holes, passes through with bearing chamber Logical.Screwed hole is installed outer silk and leads directly to ferrule fitting, enter scene 2 allotter by one and be connected with grease pump lubricating oil pipe.Axle Hold lubrication by oil pump self control or Wind turbines PLC control regular working, during bearing operation, lubricant grease by Height is full of whole bearing chamber to low flowing, it is ensured that Bearing inner ball and retainer are in good lubricant effect.

As in figure 2 it is shown, direction as shown in Figure 2, left side is hub side, and right side is gear box side.A correspondence horizontal line, B pair Answer the centrage of double roller bearings 100.Angle between A and B is 5 °.Pouring orifice 101 is arranged on the bearing (ball) cover shown in Fig. 2 Left side.

As it is shown on figure 3, direction as shown in Figure 3, upside is hub side, and downside is gear box side.Pouring orifice 101 is arranged on The upside of the bearing (ball) cover shown in Fig. 3.

Further, seeing Fig. 1, double roller bearings 100 can also include fat suction device 103.The oil-in of fat suction device 103 with Oil drain out 102 connects.

As a kind of embodiment, oil drain out 102 is provided with fast patch plug.The oil-in of fat suction device 103 is also equipped with Fast patch plug.The oil-in of fat suction device 103 is connected by fast patch plug with oil drain out 102, convenient operation.See Fig. 1, double roller bearings Bearing 100 can also include oil sump tank 104.Oil sump tank 104 is connected with the oil-out of fat suction device 103.

Wherein, fat suction device 103 can include the structures such as motor, actuating device, plunger displacement pump, control device, oil pipe and joint. Fat suction device 103 can share access Wind turbines PLC control loop, periodically turn-on power with electromagnetic valve and carry out arranging fat work.Inhale Fat device uses the mode of vacuum drawn, and operation principle is divided into two stages, oil suction and oil extraction stage, as shown in Figure 4.Revolve at motor During Zhuaning when eccentric 401 eccentric side of fat suction device 103 moves downward, act on lower plunger pump 402 at spring 403 and transport downwards Dynamic, plunger displacement pump 402 is internally formed vacuum.Under atmospheric pressure effect, oil sucting one-way valve 405 is opened, and waste and old oils and fats is made at atmospheric pressure Oil-absorbing process is formed with lower suction fat suction device 103 body.When eccentric 401 eccentric side moves upward, eccentric 401 acts on Plunger displacement pump 402 moves upward, compression spring 403, and fat suction device 103 internal pressure raises, and oil sucting one-way valve 405 is closed, oil extraction list Opening to valve 404, extruding oils and fats is discharged.

In Fig. 6,200 is the lubricating grease pump of band automatic control function, and 300 is the oils and fats of oil return function after the blocking of band oil circuit Allotter, 301 is straight-through ferrule fitting.Shown in Fig. 6, the oil drain out at double roller bearings 100 is installed the outer silk of double end and is led directly to Joint, makes four M6 screwed holes bottom bearing.Fat suction device 103 is fixed on bottom bearing by four M6*12 hex bolts, Respectively oil drain out 101 is connected with fat suction device 103 oil-in by the fast patch plug at lubricating oil pipe two ends, by liposuction pump oil drain out 102 are connected with oil collection box 104.Seeing Fig. 5, fat suction device 103 controls liposuction pump at Wind turbines PLC by relay K 1 periodicity Obtain electric operation；Or run at the control periodical carrying control system, discharge the waste and old oils and fats of Bearing inner in time.

Above-mentioned pair of ball bearing, by the position of pouring orifice 101 by the center of double ball bearings 100, changes near double On the bearing (ball) cover of the wheel hub side of feedback asynchronous generator, do not affect the mechanical structure of whole pair of ball bearing 100.At double balls In bearing 100 rotary course, owing to the existence at the bearing elevation angle makes oils and fats flow from high to low, and pouring orifice 101 is opened in double The position that ball bearing 100 is higher, therefore can change double ball bearing 100 internal lubrication oils and fats mobility status, it is ensured that double rollings Lubricating uniform before and after pearl bearing 100, reduces the internal inter deterioration caused because lubrication is not in place of double ball bearing 100, improves Whole pair of ball bearing 100 lubricant effect.Meanwhile, by increasing fat suction device 103 at the oil drain out 102 of double ball bearings 100, and Time get rid of waste oil in bearing chamber, keep bearing internal lubrication oils and fats to be maintained at last state, improve lubricant grease product in bearing Matter, reduces the bearing sealed ring oil spilling caused because oil drain out 102 blocks, and decreases the bearing caused because of oil spilling dirty simultaneously Dye, improves bearing chamber lubricant effect.

A kind of feedback asynchronous generator, including above-mentioned any one pair of ball bearing, and has above-mentioned pair of ball bearing and is had The all advantages having.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model Protection domain within.

Claims (8)

1. double ball bearings, in double-fed asynchronous generator, it is characterised in that described pair of ball bearing is provided with oiling Mouth and oil drain out；Described pouring orifice is opened in the wheel hub being applicable to close described double-fed asynchronous generator of described pair of ball bearing On the bearing (ball) cover of side.

The most according to claim 1 pair of ball bearing, it is characterised in that described pouring orifice is screwed hole.

The most according to claim 2 pair of ball bearing, it is characterised in that the number of described pouring orifice is two or more.

The most according to claim 2 pair of ball bearing, it is characterised in that the external outer silk of described pouring orifice straight-through card socket Head, and enter scene 2 allotter be connected with grease pump lubricating oil pipe by one.

The most according to claim 1 pair of ball bearing, it is characterised in that also include fat suction device, the oil-feed of described fat suction device Mouth is connected with described oil drain out.

The most according to claim 5 pair of ball bearing, it is characterised in that described oil drain out is provided with out patch plug；Described The oil-in of fat suction device is provided with fast patch plug.

The most according to claim 5 pair of ball bearing, it is characterised in that also include oil sump tank；Described oil sump tank is with described The oil-out of fat suction device connects.

8. a double-fed asynchronous generator, it is characterised in that include the double ball axles as described in claim 1 to 7 any one Hold.