CN211852046U

CN211852046U - Wind driven generator blade capable of being rolled in segmented mode

Info

Publication number: CN211852046U
Application number: CN202020008963.7U
Authority: CN
Inventors: 高猛; 刘清; 陈文光; 李秀海
Original assignee: MingYang Smart Energy Group Co Ltd
Current assignee: MingYang Smart Energy Group Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-11-03
Anticipated expiration: 2030-01-03

Abstract

The utility model discloses a but aerogenerator blade of segmentation roll-up, including the blade body, the blade root of blade body is equipped with a plurality of blade segmentation units that connect gradually to being equipped with between the apex, the inside of every blade segmentation unit all is equipped with the spool that extends along its length direction, the leading edge part of this blade segmentation unit is fixed, but its trailing edge part is the roll-up formula, one side of this roll-up formula trailing edge part is connected to on the spool, its opposite side is taken on the leading edge part, its both ends difference slidable mounting is on the guide rail at blade segmentation unit both ends, the surface of every blade segmentation unit all is equipped with the sensor, its inside control system who is equipped with and sensor signal connection, control system and the power supply signal connection of spool, the control system mutual independence of a plurality of blade segmentation units. The utility model discloses can realize that the blade is its ability of catching wind energy of automatic adjustment under different wind conditions condition according to actual operation condition automatically regulated blade's catching wind area.

Description

Wind driven generator blade capable of being rolled in segmented mode

Technical Field

The utility model belongs to the technical field of aerogenerator blade's technique and specifically relates to indicate an aerogenerator blade of sectional type roll-up.

Background

Wind power is considered one of the cleanest, most environmentally friendly green sources currently available, and in recent years, wind power generation is becoming a hot tide in the world and becoming more favored. The principle of wind power generation is that wind energy is utilized to drive blades of a wind generating set to rotate, and then a speed-up gear box is used to increase the rotating speed or directly drive a generator to rotate to generate power. The kinetic energy of wind is converted into mechanical energy, and then the mechanical energy is converted into electric energy, namely wind power generation.

The blade as a wind catching device in the wind generating set is one of the most critical and important components in the wind generating set, the cost of the blade accounts for about 20% of the whole wind generating set, and the safety of the blade directly influences the safe and reliable operation of the wind generating set. The design life of the wind turbine set is generally 20 years or 25 years, in such a long life cycle, extreme wind conditions such as typhoon and the like can be met, and the current measures for dealing with the extreme working conditions are generally rigid resistance after feathering shutdown, so that the blades have to be heavy to meet the requirements of structural rigidity and strength of the blades, and the generated energy in the typhoon period is lost. Therefore, how to design the high-safety blades, reducing the load of the whole machine under extreme working conditions to ensure the safe and reliable operation of the unit and simultaneously taking the function of controlling the output power of the unit into consideration is always a key concern in the design of the wind turbine unit.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, a but sectional roll-up's aerogenerator blade is provided, can be according to the catch wind area of every blade segmentation unit of actual operation condition automatically regulated, realize that the blade is its ability of catching wind energy of automatic adjustment under different wind conditions, the size of the load that the control blade receives reaches little wind increase load, big wind reduces load, the maximize utilizes the wind energy to improve the unit generated energy, the safe and reliable operation of unit has been guaranteed simultaneously.

In order to achieve the above object, the present invention provides a technical solution: a wind driven generator blade capable of being rolled in a segmented mode comprises a blade body, a plurality of blade segmentation units which are sequentially connected are arranged between a blade root and a blade tip of the blade body, a scroll extending along the length direction of the blade segmentation unit is arranged inside each blade segmentation unit, the front edge part of each blade segmentation unit is fixed, the rear edge part of each blade segmentation unit is in a furlable mode, one side edge of the rear edge part of each furlable mode is connected to the scroll, the other side edge of each furlable mode is lapped on the front edge part, two ends of each blade segmentation unit are respectively installed on guide rails at two ends of each blade segmentation unit in a sliding mode, the rear edge part is driven to slide along the guide rails and roll up or unfold around the scroll through the rotation of the scroll, a sensor is arranged on the surface of each blade segmentation unit and used for detecting the surface pressure load of each blade segmentation unit, a control system connected with, the control systems of the blade section units are mutually independent, and the control systems control the rotation of the corresponding reels according to the load so as to adjust the wind catching area of the corresponding blade section units, so that the wind power generation of the wind driven generator under different wind conditions is adapted.

Further, the trajectory of the guide rail is adapted to the airfoil profile shape of the blade segment unit.

Compared with the prior art, the utility model, have following advantage and beneficial effect:

1. the utility model discloses a blade can be according to the catch wind area of every blade segmentation unit of actual operation condition automatically regulated, realize that the blade is its ability of catching wind energy of automatic adjustment under different wind conditions, with the size of the load that the control blade receives, when guaranteeing unit safe and reliable operation, the maximize utilizes the wind energy to improve the unit generated energy, catch wind area through reducing the blade under the high wind speed, reduce the unit load, the wind speed is surely cut out in the increase, improve the generated energy, increase blade catch wind area under the low wind speed, guarantee the unit and move with great power, promote the unit generated energy.

2. The utility model discloses an adjusting blade catches the wind area, makes the blade also can move under extreme wind conditions such as typhoon, and the maximize utilizes wind energy to improve the unit generated energy.

3. The utility model discloses a sectional type blade solves the problem that the transportation transfinites, increases conveying efficiency, reduces the cost of transportation.

Drawings

Fig. 1 is a schematic perspective view of the blade of the present invention in an unfolded state.

Fig. 2 is a schematic perspective view of the blade in the furled state according to the present invention.

Fig. 3 is a schematic perspective view of the blade segment unit of the present invention in an unfolded state.

Fig. 4 is a partial enlarged view of the blade segment unit of the present invention in the unfolded state.

Fig. 5 is a left side view of the blade segment unit of the present invention in the unfolded state.

Fig. 6 is a schematic perspective view of the blade segment unit of the present invention in a furled state.

Fig. 7 is a left side view of the blade segment unit of the present invention in a furled state.

Detailed Description

The present invention will be further described with reference to the following specific embodiments.

As shown in fig. 1 to 7, the wind turbine blade capable of being furled in a segmented manner according to the present embodiment includes a blade body, a plurality of blade segment units 1 connected in sequence are disposed between a blade root and a blade tip of the blade body, a reel 2 extending along a length direction of each blade segment unit 1 is disposed inside each blade segment unit 1, a leading edge portion 101 of each blade segment unit 1 is fixed, a trailing edge portion 102 thereof is furlable, one side of the furlable trailing edge portion 102 is connected to the reel 2, the other side thereof is lapped on the leading edge portion 101, two ends thereof are respectively slidably mounted on guide rails 3 at two ends of each blade segment unit 1, a track of each guide rail 3 is adapted to an airfoil profile shape of each blade segment unit 1, the trailing edge portion 102 is driven by rotation of the reel 2 to slide along the guide rails 3 and roll up or unwind around the reel 2, wherein a sensor (not shown in the figures) or a strain gauge is disposed on a surface of each blade segment unit, the control system is connected with a power source of the reel 2 through signals, the control systems of the blade section units 1 are mutually independent, the surface pressure load of the blade section unit 1 is detected through the sensors and fed back to the corresponding control systems, the control systems control the rotation of the corresponding reel 2 according to the load size so as to control the size of the wind catching area of the rear edge part 102, and each blade section unit 1 can automatically adjust the wind catching area according to the size of the pressure load to adapt to the power generation of the wind driven generator under different wind conditions.

The method specifically comprises the following steps: when the wind speed is low, the sensor detects a small surface pressure load, and at the moment, the wind driven generator needs larger wind catching capacity, so that the blades can be unfolded to increase the wind catching area of the blades, the unit is ensured to run at a larger power, and the generating capacity of the unit is improved; when the wind speed is high, the sensor detects large surface pressure load, the load borne by the blade is increased, and the blade needs to be rolled up to reduce the wind catching area of the blade so as to reduce the pressure load borne by the blade, so that the cut-out wind speed of the blade is increased, and the power generation capacity is improved.

In addition, in the transportation process of the large-scale wind driven generator blade, due to limiting factors such as factory buildings and road conditions, the blade can not be manufactured in the same theory, the size of the blade needs to be properly reduced, the wind driven generator blade capable of being rolled up in a segmented mode can not be limited by the limiting factors, the wind driven generator blade capable of being rolled up in the segmented mode is disassembled, the transportation efficiency of the blade is greatly improved, and the transportation cost is reduced.

The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a aerogenerator blade of sectional type roll-up, includes the blade body, its characterized in that: the blade comprises a blade body, a plurality of blade segmentation units connected in sequence are arranged between a blade root and a blade tip of the blade body, a scroll extending along the length direction of each blade segmentation unit is arranged in each blade segmentation unit, the front edge part of each blade segmentation unit is fixed, the rear edge part of each blade segmentation unit is of a furlable type, one side edge of each furlable rear edge part is connected to the scroll, the other side edge of each furlable rear edge part is lapped on the front edge part, two ends of each furlable rear edge part are respectively and slidably mounted on guide rails at two ends of each blade segmentation unit, the rear edge part is driven to slide along the guide rails and be furled or unfolded around the scroll through the rotation of the scroll, a sensor is arranged on the surface of each blade segmentation unit and used for detecting the surface pressure load of each blade segmentation unit, a control system connected with the sensor is arranged in each blade segmentation, and the control systems control the rotation of the corresponding reels according to the load so as to adjust the wind catching area of the corresponding blade section units, so that the wind power generation of the wind driven generator under different wind conditions is adapted.

2. A wind turbine blade with segmented furling according to claim 1 wherein: the trajectory of the guide rail is adapted to the airfoil profile shape of the blade segment unit.