CN102364868B

CN102364868B - Safe and automatic brake of wind power generator

Info

Publication number: CN102364868B
Application number: CN 201110362454
Authority: CN
Inventors: 张金明; 胡振其
Original assignee: ZHEJIANG FENGGUANG NEW ENERGY TECHNOLOGY CO LTD
Current assignee: Zhejiang Fengguang New Energy Technology Co.,Ltd.
Priority date: 2011-11-15
Filing date: 2011-11-15
Publication date: 2013-04-17
Anticipated expiration: 2031-11-15
Also published as: CN102364868A

Abstract

A safe and automatic brake of a wind power generator is disclosed. A stator shaft is fixed in a pedestal. An electromagnetic coil is fixed on a magnetic base. One end of a spring applies force on the magnetic base and the other end applies the force on a suspended iron. The annular suspended iron and a spline sleeve are sleeved on the stator shaft. A baffle ring is formed on the spline sleeve. An inner ring of the suspended iron is located between the baffle ring and an upper part of the pedestal. The suspended iron is fixed with an outer ring through a screw. A locating ring is fixed on the outer ring through the screw and is sleeved on a ring slot of a rubber ring. An inner bevel of the rubber ring suppresses on a lower base of a blade. The inner ring of a bearing is fixed on the stator shaft. The outer ring of the bearing is fixed with the inner ring of the lower base of the blade. An upper base of the blade is fixed with the lower base of the blade. The upper base of the blade is sleeved on the lower base of the blade and presses on a step of the lower base of the blade. A sleeve is sleeved on the stator shaft. The upper part of the sleeve presses on the lower part of the inner ring of the bearing. The lower part of the sleeve presses on the spline sleeve. A wind wheel is fixed with the upper base of the blade.

Description

Wind-driven generator safety automation brake gear

Technical field:

The present invention relates to technical field of generators, more specifically to the dead-man's device of wind-driven generator.

Background technology:

Wind power generation plant is in the natural environment; wind speed change frequent and excursion greatly; variation of ambient temperature is large; thereby; rugged environment usually can cause generator hypervelocity, overheated and cause fault; in order to guarantee that wind-driven generator runs well for a long time, must the hypervelocity overtemperature protection system be set at wind-driven generator.But at present; the wind-driven generator overspeed tripping device adopts repeatedly moment electrical short brake gear mostly; yet large at wind-force, wind speed round is high and under the state that rotating torque is very large, suddenly moment electrical short brake usually can damage the air blade of rotation and connect vertically hung scroll and the whole wind wheel apparatus of air blade.

Application number: 201010120086.3, application publication number CN101794983A discloses a kind of safety automatic braking device of wind driven generator, its weak point is: and 1, " under normal circumstances; solenoid is switched on always; and drag upper frictional disk and the lower frictional disk of the clamping clutch terminal pad that holds discoidal armature and link together with annular armature " (see application number: the 4th page in the specification of 201010120086.3 patent documentations the 0014th section), he separates to make clutch terminal pad and generator amature.Its solenoid drags sorption annular armature always, so power consumption is large in the use procedure, simultaneously can cause short of electricity and cause brake and can't work when gentle breeze does not generate electricity from the net generator, an outage then can Braking mode, and the safety that has had a strong impact on wind energy generating plant is normally moved.2, its when braking upper frictional disk and lower frictional disk clamping clutch terminal pad brake, buffering is not enough during braking, in the situation that violent typhoon, utilizes its braking very easily to produce because spring pressure is large during braking, buffering not and the infringement wind wheel.Friction plate repeatedly rubs and can't adjust frictional force again after wearing and tearing, simultaneously, in wind-driven generator can not the normal power generation situation, consumes on the contrary the storage power supply of wind-driven generator.

Summary of the invention:

Purpose of the present invention is exactly the deficiency for prior art, and wind-driven generator safety automation brake gear is provided, and it has saved electric power, has avoided outage and power supply unit fault and the situation of braking; Simultaneously, it has utilized tapered friction structure to strengthen frictional force.Cushion effect is abundant in the braking procedure, even also can not damage wind wheel in the situation of violent typhoon, also can regulate increasing friction force in the time of can also working as the frictional force deficiency in not shutdown situation.

Technology solution of the present invention is as follows:

Wind-driven generator safety automation brake gear, comprise axle centered by stator axis, by base, solenoid, outstanding iron, external friction dish, conical friction circle, interior friction pulley, the brake(-holder) block wing, solenoid is fixed on the base, be fixed with aluminum component on the base, be fixed with magnetic support on the aluminum component, be fixed on the magnetic support, four springs are housed, and the first spring one end active force pushes away outstanding iron in magnetic support, other end active force;

The outstanding iron of annular slides on spline housing, the spline housing sleeve is on stator axis, outstanding iron is fixed by screws in external toroidal ring, external toroidal ring is fixed on the taper brake circle by the screw all-purpose adhesive, the interior oblique anchor ring of taper brake circle is pressed against on the outer oblique anchor ring of brake wheel seat, the brake wing is housed above the brake wheel, brake block is fixed by screws on the brake bar, the brake bar is fixed on the outer ring of clutch shaft bearing, the inner ring of clutch shaft bearing is fixed on the spline housing, ball places the annular groove of brake bar and is pressing inner washer, and the second spring one end active force is in outstanding iron, other end active force is in inner washer;

Sleeve is being pressed spline housing, and the inner ring of the second bearing is fixed on the stator axis and is pressing sleeve, and blade seat is fixed on the outer ring of the second bearing, blade seat bottom moulding or be fixed with dead turn, and brake block contacts with dead turn.

Lower of the first blade in the described blade seat is fixed on the outer ring of the second bearing, and lower of the second blade in the blade seat is spirally connected and is fixed on lower of the first blade, and the lower bottom of the first blade is fixed with dead turn.

Described magnetic support is fixed on the aluminum component by connecting double-screw bolt, and aluminum component is fixed on the base by connecting double-screw bolt.

Described: the lower bottom of the first blade forms baffle ring, dead turn moulding or be fixed on the baffle ring.

Form the sleeve groove on the described spline housing, form the sleeve tenon on the stator axis, sleeve tenon sleeve is in the sleeve groove.

Beneficial effect of the present invention is: 1, it has saved electric power, has avoided outage and power supply unit fault and the situation of active braking.2, it adopts two stage braking, and buffering is abundant in the braking procedure, even also can not damage wind wheel in the situation of violent typhoon.

Description of drawings:

Fig. 1 is cutaway view of the present invention

Fig. 2 is the structural representation of outstanding iron

Fig. 3 is the A of Fig. 2---the A cutaway view

Fig. 4 is the structural representation of spline housing

Fig. 5 is the B of Fig. 4---the B cutaway view

Fig. 6 is the structural representation of taper brake circle

Fig. 7 is the schematic perspective view of sleeve

Fig. 8 is operation principle key diagram of the present invention

Fig. 9 is the schematic perspective view of lower of the first blade

Among the figure: 1, stator axis; 1a, sleeve tenon; 2, base; 3, aluminum component; 4, magnetic support; 5, solenoid; 6, the first spring; 7, outstanding iron; 8, spline housing; 81, sleeve groove; 9, external toroidal ring; 10, taper brake circle; 11, brake bar; 111, outer oblique anchor ring; 112, annular groove; 12, brake block; 13, clutch shaft bearing; 14, ball; 15, inner washer; 16, the second spring; 17, sleeve; 18, the second bearing; 19, connect double-screw bolt; 20, blade seat; 201, the first blade is lower; 2011, baffle ring; 202, the second blade is lower; 21, dead turn.

Embodiment:

Embodiment: see shown in Fig. 1 to 6, wind-driven generator safety automation brake gear, comprise stator axis 1, base 2, stator axis 1 is fixed on the base 2, be fixed with aluminum component 3 on the base 2, be fixed with magnetic support 4 on the aluminum component 3, solenoid 5 is fixed on the magnetic support 4, and the first spring 6 one end active forces are in magnetic support 4, other end active force in outstanding iron 7;

Outstanding iron 7 sleeves of annular are on spline housing 8, spline housing 8 sleeves are on stator axis 1, outstanding iron 7 is fixed by screws in external toroidal ring 9, external toroidal ring 9 is fixed by screws on the taper brake circle 10, the interior oblique anchor ring 101 of taper brake circle 10 is pressed against on the outer oblique anchor ring 111 of brake bar 11, brake block 12 is fixed by screws on the brake bar 11, brake bar 11 is fixed on the outer ring of clutch shaft bearing 13, the inner ring of clutch shaft bearing 13 is fixed on the spline housing 8, ball 14 places the annular groove 112 of brake bar 11 and is pressing inner washer 15, the second springs 16 1 end active forces in outstanding iron 7, other end active force is in inner washer 15;

Sleeve 17 is being pressed the inner ring of spline housing 8, the second bearings 18 to be fixed on the stator axis 1 and is being pressed sleeve 17, and blade seat 20 is fixed on the outer ring of the second bearing 18, blade seat 20 bottom moulding or be fixed with dead turn 21, and brake block 12 contacts with dead turn 21.

Lower 201 in the first blade in the described blade seat 20 is fixed on the outer ring of the second bearing 18, and lower 202 in the second blade in the blade seat 20 is spirally connected and is fixed on lower 201 in the first blade, and lower 201 bottoms of the first blade are fixed with dead turn 21.

Described magnetic support 4 is fixed on the aluminum component 3 by connecting double-screw bolt 19, and aluminum component 3 is fixed on the base 2 by connecting double-screw bolt 19.

Lower 201 bottoms of the first blade in the described blade seat 20 form baffle ring 2011, dead turn 21 moulding or be fixed on the baffle ring 2011.

Form sleeve groove 81 on the described spline housing 8, form sleeve tenon 1a on the stator axis 1, sleeve tenon 1a sleeve is in sleeve groove 81.

Operation principle: as shown in Figure 8, the principle of wind electricity power generator is, is fixed with stator C on the stator axis 1, and wind wheel A rotor driven B rotates around stator C and generates electricity.

Under normal circumstances, solenoid 5 need not be switched on, outstanding iron 7 does not produce pressure, the elastic force of the second spring 6 makes brake block 12 contact with blade seat 20 bottoms, is fixed wtih rotor B on the wind wheel A, and rotor B drives blade seat 20 and rotates, wind turbine power generation, owing to clutch shaft bearing 13 and ball 14 being arranged, so this moment, brake block 12 rotated with rotor B, need not brake.Situation about need not switch at solenoid 5 like this, wind turbine power generation, solenoid will be switched on and be compared during with the prior art wind turbine power generation, and the present invention has saved electric power, has avoided outage and power supply unit fault and the situation of active braking.

During braking, iron 7 is hanged in solenoid 5 adhesives, pressing taper brake circle 10 with external toroidal ring 9 that outstanding iron 7 is fixed together contacts with the bar 11 that brakes, manufacture the taper brake circle 10 and brake bar 11 friction catches that forms by elastomeric material, by brake block 12 and dead turn 21 frictions blade seat 20 is stopped operating simultaneously, compared with prior art, prior art is that external friction dish and internal friction disc clip clutch clutch terminal pad and brake, only have the one-level braking, easily cause in the situation that the violent typhoon wind wheel damages.The present invention is owing to being the level 2 buffering braking, first order buffer-braking is taper brake circle 10 and brake bar 11 friction catches, second level buffer-braking is that brake block 12 is fixed on epitrochanterian wind wheel with dead turn 21 friction catches, first order buffer-braking and second level buffering system are carried out simultaneously, wind wheel more fully buffer-braking activity space and time have been given, be exactly in the situation that violent typhoon can not make because of braking wind wheel damage yet like this.

Claims

1. wind-driven generator safety automation brake gear, comprise stator axis (1), base (2), stator axis (1) is fixed on the base (2), be fixed with aluminum component (3) on the base (2), be fixed with magnetic support (4) on the aluminum component (3), solenoid (5) is fixed on the magnetic support (4), and the first spring (6) one end active forces are in magnetic support (4), other end active force in outstanding iron (7);

Outstanding iron (7) sleeve of annular is on spline housing (8), spline housing (8) sleeve is on stator axis (1), outstanding iron (7) is fixed by screws in external toroidal ring (9), external toroidal ring (9) is fixed by screws on the taper brake circle (10), the interior oblique anchor ring (101) of taper brake circle (10) is pressed against on the outer oblique anchor ring (111) of brake bar (11), brake block (12) is fixed by screws on the brake bar (11), brake bar (11) is fixed on the outer ring of clutch shaft bearing (13), the inner ring of clutch shaft bearing (13) is fixed on the spline housing (8), ball (14) places the annular groove (112) of brake bar (11) and is pressing inner washer (15), and the second spring (16) one end active forces are in outstanding iron (7), other end active force is in inner washer (15);

Sleeve (17) is being pressed spline housing (8), the inner ring of the second bearing (18) is fixed on stator axis (1) upward and is pressing sleeve (17), blade seat (20) is fixed on the outer ring of the second bearing (18), blade seat (20) bottom moulding or be fixed with dead turn (21), brake block (12) contacts with dead turn (21).

2. wind-driven generator safety automation brake gear according to claim 1, it is characterized in that: the first blade in the blade seat (20) lower (201) is fixed on the outer ring of the second bearing (18), the second blade in the blade seat (20) lower (202) is spirally connected and is fixed on the first blade lower (201), and lower (201) bottom of the first blade is fixed with dead turn (21).

3. wind-driven generator safety automation brake gear according to claim 1 is characterized in that: magnetic support (4) is fixed on the aluminum component (3) by connecting double-screw bolt (19), and aluminum component (3) is fixed on the base (2) by connection double-screw bolt (19).

4. wind-driven generator safety automation brake gear according to claim 1, it is characterized in that: lower (201) bottom of the first blade in the blade seat (20) forms baffle ring (2011), dead turn (21) moulding or be fixed on the baffle ring (2011).

5. wind-driven generator safety automation brake gear according to claim 1, it is characterized in that: form sleeve groove (81) on the spline housing (8), form sleeve tenon (1a) on the stator axis (1), sleeve tenon (1a) sleeve is in sleeve groove (81).