Wind turbines rotor regulating device and the wind power generating set that comprises this device
Technical field
The utility model relates to wind power plant, specifically a kind of wind turbines rotor regulating device, and the wind power generating set that comprises this regulating device.
Background technique
In recent years, along with the develop rapidly of wind generating technology, the construction of wind energy turbine set has reached unprecedented climax.But, there is the phenomenon of actual power generation far below expection generated energy in many built wind energy turbine set, return its reason, early stage wind-resources to be assessed to insufficient causing because of the construction of built wind energy turbine set, the wind energy turbine set annual mean wind speed building up is low, and in the wind energy turbine set of this environment, the wind power generating set putting into operation is generally the shorter middle-size and small-size wind power generating set of length of blade, thereby make the year equivalence of generator set utilize hour number low, its generated energy does not reach expection naturally.
In order to improve the generated energy of above-mentioned ambient wind electric field, the most direct method is exactly that the middle-size and small-size wind power generating set putting into operation is replaced with to the Large-scale Wind Turbines that length of blade is grown, and expands the wind wheel windward side of wind power generating set to adapt to the wind energy turbine set of low wind speed.But this direct replacing wind power generating set will certainly make the construction cost of wind energy turbine set significantly increase sharply, also can cause raw footage compared with the waste of short blade simultaneously.
For solve that above-mentioned low wind speed and wind electric field directly changes that Large-scale Wind Turbines exists with high costs, waste serious technical problem, can consider the wind wheel blade of original middle-size and small-size wind power generating set putting into operation to increase, to strengthen the wind energy power of catching of wind wheel, realize original wind power generating set optimization putting into operation.For example Chinese patent literature disclosed " blade of wind-driven generator regulating device and comprise the wind-driven generator of this regulating device " (publication number: CN 201953566, open day: on August 31st, 2011), " Wind wheel lengthening ring " (publication number: CN 201794723, open day: on April 13rd, 2011), though these technology are to increase the mode of wind wheel blade, realize original wind power generating set optimization putting into operation, but it is arranged on regulating device (that is growth ring) between blade and pitch variable bearings, thereby can make the load of pitch variable bearings significantly increase, and then (load of pitch variable bearings is only come to blade to have affected the reliability of unit operation and Security, additional regulating device certainly will make pitch variable bearings overload, though not too obviously impact installation of this overload, can make the ability of pitch variable bearings destroy but be in operation, cannot realize smoothly change oar and will have the excessive risk of ruining machine), in addition, the former wind-driven generator that puts into operation in order to ensure the blade tip of its wind wheel blade and the clearance of pylon in safety range, (former this dish is used for installing pitch variable bearings to the blades installation dish of its wheel hub, connect the blade root of blade by pitch variable bearings again) have between vertical line on axis and wind driven generator principal shaft axis approximately 2~4 ° inclination cone angle (as shown in Figure 4, in figure, A is main-shaft axis, B is the vertical line of main-shaft axis, C is the axis of wheel hub blades installation dish, D is inclination cone angle), but, above-mentioned angle of inclination only arranges for former length of blade, when former blade being installed on wheel hub and formed after wind wheel by the regulating device (that is growth ring) of two ends parallel flange, the length of blade being equivalent to so on wind wheel increases, the distortion meeting of blade is larger, in such cases, above-mentioned angle of inclination may not be corresponding, and meet length increase after blade tip and the headroom safe distance requirement between pylon, thereby, further increase the potential safety hazard of wind-driven generator operation.
Summary of the invention
Goal of the invention of the present utility model is: for the present situation of above-mentioned Construction of Wind Power, increasing not significantly under the prerequisite of construction cost, a kind of wind turbines rotor regulating device that can effectively improve wind wheel and catch wind energy power is provided, and the wind power generating set that comprises this regulating device, this unit operation is reliable, safety, can adapt to the wind energy turbine set of low wind speed.
The wind turbines rotor regulating device that the utility model provides is: a kind of wind turbines rotor regulating device, described regulating device is the tubular structure of hollow, and its one end is provided with the flange, the other end that are connected with hub of wind power generator and is provided with the flange being connected with wind-driven generator pitching bearing.
Further, described regulating device is the casting structure of straight-tube shape or cone tubular, and the flange at two ends is infolding setting respectively.
Further, the flange at described regulating device and two ends structure or the split welding composite structure that is formed in one.
Further, as preferred version, between the axis of two end flange of described regulating device, there is the angle of 0~1.5 °.
The wind power generating set that what the utility model provided comprise above-mentioned regulating device is: a kind of wind power generating set that comprises above-mentioned wind turbines rotor regulating device, comprise wheel hub and pitch variable bearings, described wheel hub is assemblied on the main shaft of wind power generating set, the circumferencial direction of wheel hub is evenly equipped with multiple blades installation dishes, the quantity of the corresponding wheel hub upper blade of the quantity mounting disc of described pitch variable bearings, pitch variable bearings is connected with the blade of wind power generating set, between described wheel hub and pitch variable bearings, be provided with the regulating device of hollow tube-shape structure, one end of this regulating device is provided with the flange being connected with wheel hub, the other end is provided with the flange that pitch variable bearings connects, described regulating device is by corresponding blades installation dish and the pitch variable bearings that connects wheel hub of flange at two ends.
Further, the change oar of described pitch variable bearings drives power source to be arranged in regulating device or in wheel hub; The described change oar being arranged in wheel hub drives power source to carry out member drives pitch variable bearings by the change oar lengthening.
Further, the change oar of described lengthening execution member supports is assemblied in regulating device.
Further, described regulating device is the casting structure of straight-tube shape or cone tubular, and the flange at two ends is infolding setting respectively.
Further, the flange at described regulating device and two ends structure or the split welding composite structure that is formed in one.
Further, as preferred version, between the axis of two end flange of described regulating device, there is the angle of 0~1.5 °.
The beneficial effects of the utility model are:
1. under the prerequisite that increases not significantly construction cost, avoid waste, by wind wheel regulating device is set on the wind wheel in original wind power generating set putting into operation, to increase the length of blade of wind wheel, strengthen the wind energy power of catching of wind wheel, realize the optimization to original wind power generating set putting into operation, to adapt to the wind energy turbine set of low wind speed;
2. the technology of the utility model and publication number CN 201953566, CN 201794723 is compared, connect pitch variable bearings (size that is wheel hub increases) by the regulating device arranging on wheel hub, to improve the wind energy power of catching of wind wheel, keep the load of pitch variable bearings constant simultaneously, thereby make pitch variable bearings only bear the load of corresponding blade, become oar ability reliable, effective guarantee reliability and the Security of unit operation;
3. the utility model and publication number CN 201953566, the technology of CN 201794723 is compared, depending on the wheel hub inclination cone angle (being the cone angle that tilts between blades installation disk axis and the vertical line of main-shaft axis) of the former wind-driven generator that puts into operation and the concrete increase situation of wind wheel size, can be by two end flange of regulating device taking parallel (the axis angle of two end flange is as 0) or non-parallel (the axis angle of two end flange is in 0~1.5 °, and can not be 0 o'clock) structure setting, thereby effectively adjust and guaranteed that the blade tip clearance of size increase wind wheel is in safety range, further effective guarantee reliability and the Security of unit operation.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is a kind of structural representation of the utility model wind wheel regulating device.
Fig. 2 is the another kind of structural representation of the utility model wind wheel regulating device.
Fig. 3 is a kind of structural representation of the utility model wind power generating set.
Fig. 4 is the schematic diagram that produces inclination cone angle between the vertical line on blades installation disk axis and the main-shaft axis of hub of wind power generator.
Code name implication in figure: 1-wheel hub; 2-regulating device; 3-become oar to drive power source; 4-pitch variable bearings; 5-blade; 6-become oar to carry out member.
Embodiment
embodiment 1
Referring to Fig. 1 and Fig. 3: the tubular structure that wind wheel regulating device 2 of the present utility model is hollow, be straight-tube shape (can be also cone tubular), with the moulding of casting mode, its two ends have respectively the flange of infolding, two end flange are specifically depending on the wheel hub inclination cone angle (being the cone angle that tilts between blades installation disk axis and the vertical line of main-shaft axis) of the former wind-driven generator that puts into operation and the concrete increase situation of wind wheel size, with parallel (i.e. coaxial setting, the axis angle of two end flange is 0) or non-parallel (be disalignment, the axis angle of two end flange can not be 0 o'clock in 0~1.5 °, for example 0.1 °, 0.5 °, 1 ° or 1.5 °) structure setting, after finally guaranteeing that wind wheel size increases, the blade tip of blade and the clearance of pylon are in safety range.Require the blades installation dish (i.e. the original position that pitch variable bearings is installed) of the corresponding hub of wind power generator 1 of one end flange size of regulating device 2, the pitch variable bearings 4 of the corresponding wind-driven generator of the other end flange size, regulating device 2 is by the infolding flange at two ends, be connected respectively wheel hub 1 and pitch variable bearings 4 with some bolts, thereby make the position of pitch variable bearings 4 away from wheel hub 1 body, expand the diameter dimension of wheel hub 1, it (is on the inner ring of pitch variable bearings 4 that the blade root of blade 5 is connected on pitch variable bearings 4 by some bolts, outer ring is for being connected with regulating device 2), can effectively increase like this wind energy power of catching of wind wheel.
The parallel structure setting of above-mentioned regulating device two end flange refers to: for concrete wind power generating set, through converting, the angle of inclination existing between the axis of the wheel hub blades installation dish of the former wind-driven generator that puts into operation and the vertical line of main-shaft axis, be unlikely to make the blade tip clearance that increases blade to be less than safety range, can consider above-mentioned regulating device 2 and the flange at its two ends to arrange in coaxial (being two ends parallel flanges) mode.
The non-parallel structure setting of above-mentioned regulating device two end flange refers to: for concrete wind power generating set, through converting, the angle of inclination existing between the axis of the wheel hub blades installation dish of the former wind-driven generator that puts into operation and the vertical line of main-shaft axis, can make the blade tip clearance that increases blade be less than safety range, now should be by two end flange of regulating device 2 with non-parallel structure setting, require angle choose reasonable in the scope that is no more than 1.5 ° between the axis of two end flange (can not be 0 °, for example 0.1 °, 0.5 °, 1 ° or 1.5 ° etc.), adjust the blade root cone angle (being equivalent to former wheel hub inclination angle in a disguised form to expand) after wind wheel size increases with this, be in safety range with the blade tip clearance of guaranteeing blade.
The wind power generating set that the utility model comprises above-mentioned wind turbines rotor regulating device 2, is mainly made up of tower cylinder, cabin, main shaft, generator, speed changer, wheel hub 1 and pitch variable bearings 4 etc.Wherein, wheel hub 1 is assemblied on the main shaft of wind power generating set, the circumferencial direction of wheel hub 1 is evenly equipped with multiple (being generally three) blades installation dish; Quantity (being generally three pitch variable bearings 4), the inner ring of pitch variable bearings 4 and the blade of wind power generating set 5 blade roots of the corresponding wheel hub 1 upper blade mounting disc of quantity of pitch variable bearings 4 are connected by some bolts.Between wheel hub 1 and pitch variable bearings 4, be provided with the regulating device 2 of above-mentioned hollow straight-tube shape, two ends band infolding flange, one end of regulating device 2 connects the blades installation dish of wheel hub 1, the other end connects pitch variable bearings 4 with some bolts correspondences outer ring by flange by flange with some bolts correspondences.The change oar action of aforementioned pitch variable bearings 4 is that the power source of being controlled by control system drives, become oar and drive power source 3(as pitch motor, hydraulic jack etc.) be arranged in regulating device 2, the change oar that its output terminal connects is carried out member (being generally the combination of axostylus axostyle and small gear) and is engaged with the inner ring of pitch variable bearings 4, becomes oar action to drive pitch variable bearings 4 to realize.
embodiment 2
Referring to Fig. 2 and Fig. 3: the tubular structure that wind wheel regulating device 2 of the present utility model is hollow, be straight-tube shape (can be also cone tubular), with the moulding of casting mode (certainly, also can adopt the roll-formings such as steel), its two ends have respectively the flange of infolding, two end flange are specifically depending on the wheel hub inclination cone angle (being the cone angle that tilts between blades installation disk axis and the vertical line of main-shaft axis) of the former wind-driven generator that puts into operation and the concrete increase situation of wind wheel size, with parallel (i.e. coaxial setting, the axis angle of two end flange is 0) or non-parallel (be disalignment, the axis angle of two end flange can not be 0 o'clock in 0~1.5 °, for example 0.5 °, 1 ° or 1.5 °) structure setting, after finally guaranteeing that wind wheel size increases, the blade tip of blade and the clearance of pylon are in safety range.Require the blades installation dish (i.e. the original position that pitch variable bearings is installed) of the corresponding hub of wind power generator 1 of one end flange size of regulating device 2, the pitch variable bearings 4 of the corresponding wind-driven generator of the other end flange size, regulating device 2 is by the infolding flange at two ends, be connected respectively wheel hub 1 and pitch variable bearings 4 with some bolts, thereby make the position of pitch variable bearings 4 away from wheel hub 1 body, expand the diameter dimension of wheel hub 1, it (is on the inner ring of pitch variable bearings 4 that the blade root of blade 5 is connected on pitch variable bearings 4 by some bolts, outer ring is for being connected with regulating device 2), can effectively increase like this wind energy power of catching of wind wheel.
The parallel structure setting of above-mentioned regulating device two end flange refers to: for concrete wind power generating set, through converting, the angle of inclination existing between the axis of the wheel hub blades installation dish of the former wind-driven generator that puts into operation and the vertical line of main-shaft axis, be unlikely to make the blade tip clearance that increases blade to be less than safety range, can consider above-mentioned regulating device 2 and the flange at its two ends to arrange in coaxial (being two ends parallel flanges) mode.
The non-parallel structure setting of above-mentioned regulating device two end flange refers to: for concrete wind power generating set, through converting, the angle of inclination existing between the axis of the wheel hub blades installation dish of the former wind-driven generator that puts into operation and the vertical line of main-shaft axis, can make the blade tip clearance that increases blade be less than safety range, now should be by two end flange of regulating device 2 with non-parallel structure setting, require angle choose reasonable in the scope that is no more than 1.5 ° between the axis of two end flange (can not be 0 °, for example 0.1 °, 0.5 °, 1 ° or 1.5 ° etc.), adjust the blade root cone angle (being equivalent to former wheel hub inclination angle in a disguised form to expand) after wind wheel size increases with this, be in safety range with the blade tip clearance of guaranteeing blade.
The wind power generating set that the utility model comprises above-mentioned wind turbines rotor regulating device 2, is mainly made up of tower cylinder, cabin, main shaft, generator, speed changer, wheel hub 1 and pitch variable bearings 4 etc.Wherein, wheel hub 1 is assemblied on the main shaft of wind power generating set, the circumferencial direction of wheel hub 1 is evenly equipped with multiple (being generally three) blades installation dish; Quantity (being generally three pitch variable bearings 4), the inner ring of pitch variable bearings 4 and the blade of wind power generating set 5 blade roots of the corresponding wheel hub 1 upper blade mounting disc of quantity of pitch variable bearings 4 are connected by some bolts.Between wheel hub 1 and pitch variable bearings 4, be provided with the regulating device 2 of above-mentioned hollow straight-tube shape, two ends band infolding flange, one end of regulating device 2 connects the blades installation dish of wheel hub 1, the other end connects pitch variable bearings 4 with some bolts correspondences outer ring by flange by flange with some bolts correspondences.The change oar action of aforementioned pitch variable bearings 4 is that the power source of being controlled by control system drives, becoming oar drives power source 3(as pitch motor, hydraulic jack etc.) be arranged in wheel hub 1, the change oar of the lengthening that its output terminal connects is carried out member (being generally the combination of axostylus axostyle and small gear) 6 and is engaged with the inner ring of pitch variable bearings 4, become oar action to drive pitch variable bearings 4 to realize, in unit running process, become the reliability of oar in order to ensure change oar execution member 6, lengthen change oar carry out member 6 by support assemblies such as supports (support is provided with bearing) in regulating device 2.
Above-mentioned two embodiments are two embodiments preferably of the present utility model, in addition, can also be other, for example the flange at regulating device and two ends is arranged to split, three is combined with welding manner, and two flanges are fixed on respectively the two ends of regulating device with welding manner correspondence.
Mentality of designing of the present utility model is, under the prerequisite that increases not significantly construction cost, avoid waste, by wind wheel regulating device is set on the wind wheel in original wind power generating set putting into operation, to increase the length of blade of wind wheel, strengthen the wind energy power of catching of wind wheel, realize the optimization to original wind power generating set putting into operation, to adapt to the wind energy turbine set of low wind speed; Meanwhile, avoid the load overload of pitch variable bearings, to ensure reliability and the Security of unit operation.