CN102364868A

CN102364868A - Safe and automatic brake of wind power generator

Info

Publication number: CN102364868A
Application number: CN201110362454XA
Authority: CN
Inventors: 张金明; 胡振其; 金锋
Original assignee: CHANGXING YUFENG ELECTROMECHANICAL Co Ltd
Current assignee: Zhejiang Fengguang New Energy Technology Co.,Ltd.
Priority date: 2011-11-15
Filing date: 2011-11-15
Publication date: 2012-02-29
Anticipated expiration: 2031-11-15
Also published as: CN102364868B

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 dead-man's device

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 big, 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, the hypervelocity overtemperature protection system must be set on wind-driven generator.But at present; The wind-driven generator overspeed tripping device adopts repeatedly moment electrical short brake gear mostly; Yet it is big at wind-force, wind speed round is high and under the state that rotating torque is very big, moment electrical short brake suddenly usually can damage the air blade of rotation and connect the 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 the normal condition; solenoid is switched on always; and drag the last frictional disk and the following 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 big in the use; When gentle breeze does not generate electricity, can cause short of electricity and cause brake and can't work from the net generator simultaneously, an outage then can Braking mode, and the safety that has had a strong impact on wind energy generating plant is normally moved.2, in its when braking, gone up frictional disk and following frictional disk clamping clutch terminal pad is braked, and buffering is not enough during braking, under the situation of violent typhoon, utilizes its braking very easily to produce because spring pressure is big during braking, and buffering is not enough and damage wind wheel.Friction plate repeatedly rubs and after wearing and tearing, can't adjust frictional force again, simultaneously, under wind-driven generator can not the normal power generation situation, consumes the storage power supply of wind-driven generator on the contrary.

Summary of the invention:

The object of the invention is exactly the deficiency to prior art, and wind-driven generator safety dead-man's device 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, under not shutdown situation, also can regulate increase frictional force in the time of can also working as the frictional force deficiency.

Technological solution of the present invention is following:

Wind-driven generator safety dead-man's device comprises with the stator axis being central shaft, 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 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, and the spline housing sleeve is on stator axis, and outstanding iron and external toroidal ring are through screw together; External toroidal ring is fixed on the taper brake circle through 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, and the brake wing is housed above the brake wheel, and brake block passes through screw 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 place the brake bar annular groove and pressing inner washer, second spring, one end active force in outstanding iron, other end active force in inner washer;

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

Following of said first blade is fixed on the outer ring of second bearing, and following of second blade is spirally connected and is fixed on following of first blade, and the following bottom of first blade is fixed with dead turn.

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

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

Form the sleeve groove on the said 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 a 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 an operation principle key diagram of the present invention

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

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

Embodiment:

Embodiment: see shown in Fig. 1 to 6; Wind-driven generator safety dead-man's device comprises stator axis 1, base 2, and 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, first spring, 6 one end active forces 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, and outstanding iron 7 passes through screw together with external toroidal ring 9, and external toroidal ring 9 passes through screw on 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; On brake bar 11, brake bar 11 is fixed on the outer ring of clutch shaft bearing 13 brake block 12 through screw, and the inner ring of clutch shaft bearing 13 is fixed on the spline housing 8; Ball 14 place the annular groove 112 of brake bar 11 and pressing inner washer 15, the second springs 16 1 end active forces in outstanding iron 7, other end active force 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 second bearing 18, blade seat 20 bottom moulding or be fixed with dead turn 21, and brake block 12 contacts with dead turn 21.

Following 201 in said first blade is fixed on the outer ring of second bearing 18, and following 202 in second blade is spirally connected and is fixed on following 201 in first blade, and following 201 bottoms of first blade are fixed with dead turn 21.

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

Following 201 bottoms of said first blade form baffle ring 2011, dead turn 21 moulding or be fixed on the baffle ring 2011.

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

Operation principle: see shown in Figure 8ly, the principle of wind electricity power generator does, is fixed with stator C on the stator axis 1, and wind wheel A drives rotor B and rotates around stator C and generate electricity.

Under the normal condition, solenoid 5 need not be switched on, and outstanding iron 7 does not produce pressure; The elastic force of second spring 6 makes brake block 12 contact with blade seat 20 bottoms, is fixing 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 are arranged,, need not brake so this moment, brake block 12 rotated with rotor B.Situation about need not switch at solenoid 5 like this, wind turbine power generation, solenoid will be switched on and 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; Press taper brake circle 10 with external toroidal ring 9 that outstanding iron 7 is fixed together and contact with brake bar 11, manufacture the taper brake circle 10 and brake bar 11 friction catches that form through elastomeric material, rubbing through brake block 12 and dead turn 21 simultaneously stops operating blade seat 20; Compared with prior art; Prior art is that external friction dish and internal friction disc clip clutch clutch terminal pad and brake, and has only the one-level braking, is prone to cause that wind wheel damages under the situation of violent typhoon.The present invention is owing to be 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, and first order buffer-braking is made with second level buffering and carried out simultaneously, has given wind wheel buffer-braking activity space and time more fully; Be exactly like this under the situation of violent typhoon, wind wheel is damaged.

Claims

1. wind-driven generator safety dead-man's device; Comprise stator axis (1), base (2); Stator axis (1) is fixed on the base (2), is fixed with aluminum component (3) on the base (2), is fixed with magnetic support (4) on the aluminum component (3); Solenoid (5) is fixed on the magnetic support (4), first spring (6) one end active forces 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) passes through screw together with external toroidal ring (9); On circle (10) was braked in taper, the interior oblique anchor ring (101) of taper brake circle (10) was pressed against on the outer oblique anchor ring (111) of brake bar (11) external toroidal ring (9) through screw, and brake block (12) passes through screw on 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) place the brake bar (11) annular groove (112) and pressing inner washer (15), second spring (16) one end active forces in outstanding iron (7), other end active force in inner washer (15);

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

2. wind-driven generator safety dead-man's device according to claim 1; It is characterized in that: first blade following (201) is fixed on the outer ring of second bearing (18); Second blade following (202) is spirally connected and is fixed on first blade following (201), and following (201) bottom of first blade is fixed with dead turn (21).

3. wind-driven generator safety dead-man's device according to claim 1 is characterized in that: magnetic support (4) is fixed on the aluminum component (3) through connecting double-screw bolt (19), and aluminum component (3) is fixed on the base (2) through connecting double-screw bolt (19).

4. wind-driven generator safety dead-man's device according to claim 1 is characterized in that: following (201) bottom of first blade forms baffle ring (2011), dead turn (21) moulding or be fixed on the baffle ring (2011).

5. wind-driven generator safety dead-man's device according to claim 1 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).