CN212003425U

CN212003425U - Fan blade apex extension fixture

Info

Publication number: CN212003425U
Application number: CN202020568684.6U
Authority: CN
Inventors: 魏勇; 王刚; 王琪琪
Original assignee: 魏勇; 王刚; 王琪琪
Current assignee: Xinjiang Lixin Energy Co.,Ltd.
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-24
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a fan blade apex extension fixture, which comprises a blade main body, wherein an extension bushing is sleeved on one side of the blade main body, a connection stopper is arranged at the joint of the extension bushing and the blade main body, an exhaust fan is arranged on the connection stopper, bolts are arranged on two sides of the connection stopper in a rotating manner, and the connection stopper is composed of two half-and-half connection blocks; when installing the bush additional at the blade main part, a linking stopper has been installed with the junction of extension bush at the blade main part, it can play tight effect to link up the stopper, make the installation that the extension bush is more stable, prevent to appear warping behind the installation of extension bush, spacing exhaust fan that links up soon simultaneously can improve the qualitative effect of viscose, accelerate the colloid drying, install the back when the extension bush, can be located blade main part surface weld iron sheet at the spacing inslot that extension bush one end was seted up, it is spacing to carry out the extension bush, improve the stability of extension bush, prevent that the extension bush from droing.

Description

Fan blade apex extension fixture

Technical Field

The utility model belongs to the technical field of wind turbine, concretely relates to fan blade apex extension fixture.

Background

A wind turbine is a turbine powered by wind energy. Conventional wind turbines can only utilize up to 59.3% of the wind energy, a value known as the betz limit, and wind turbines have been designed to overcome the fundamental deficiencies found in conventional wind turbines by taking advantage of jet engine technology. Wind turbines have a blade-wise shroud that directs and accelerates air through the blade, increasing power production, and wind turbines, designed with reference to jet engine technology, overcome one of the fundamental disadvantages present in conventional wind turbines. The wind turbine blades are shrouded around them to direct air over the blades and accelerate them, which increases the power production, the wind turbine acting like the air intake of a jet engine. When air enters, it first encounters a set of stationary blades, called the stator, which directs the air into a set of rotatable blades, the rotor. The air pushes the rotor and appears on the other side, where the air flows at a slower speed than outside the turbine. The shroud is suitably shaped so that it directs air that is relatively fast flowing on the outside into the region behind the rotor. The fast flowing air accelerates the slow moving air, bringing the area behind the turbine blades to a lower pressure to take more air through them.

The existing fan blade tip extension device has four blade technologies for improving the generated energy, namely vortex generators, spoilers, winged knives and tip extension. The first three technologies are all flow control technologies of the flow field on the surface of the blade, and the improvement of the generated energy is between 0.5 and 1.5 percent. The most effective technology is the blade tip extension technology, according to megawatt-level units, a single blade is extended by 1 meter to calculate, the generated energy can be increased by more than 2%, and a bushing for extending the blade tip is assembled on an original blade in an adhesion mode, so that adhesion is a very critical link, if the adhesion position is not firm, stress concentration is easy to generate, and the problem of potential safety hazard of the device is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fan blade apex extension fixture to solve the current fan blade apex extension fixture that proposes in the above-mentioned background art, there are four kinds of blade technologies that promote the generated energy to be vortex generator, spoiler, winged knife, apex extension respectively. The first three technologies are all flow control technologies of the flow field on the surface of the blade, and the improvement of the generated energy is between 0.5 and 1.5 percent. The blade tip extension technology has the best effect, the generated energy can be improved by more than 2% by calculating according to the megawatt unit by extending a single blade by 1 meter, and the bushing for extending the blade tip is assembled on the original blade in an adhesion mode, so that the adhesion is a very critical link, and if the adhesion position is not firm, stress concentration is easy to generate, and the potential safety hazard of the device is caused.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fan blade apex extension fixture, includes the blade main part, one side cover of blade main part is equipped with the extension bush, the junction of extension bush and blade main part has been installed and has been linked up the stopper, it is equipped with the exhaust fan to link up the stopper facial make-up, the both sides that link up the stopper are established soon and are installed the bolt, it comprises two half linking blocks.

Preferably, an integrated extension end is arranged on the extension bushing, a limit groove is formed in the extension end, and an iron sheet is welded at one end of the blade main body.

Preferably, the blade main body and the lengthened bushing are sleeved with the limiting groove in a limiting manner through an iron sheet.

Preferably, the inner side of the connecting limiting block is provided with a cambered surface, and the cambered surface is attached to the joint of the blade main body and the lengthened bushing.

Preferably, the exhaust fans are symmetrically arranged on two sides of the connection limiting block.

Preferably, the surface of the lengthened bushing is provided with a strip-shaped hole.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) when the device is used, when the blade main body of the device is additionally provided with the bushing, the connecting limiting block is arranged at the connecting part of the blade main body and the lengthened bushing, the connecting limiting block can play a role in clamping, so that the lengthened bushing is more stably installed, deformation after the lengthened bushing is installed is prevented, meanwhile, the exhaust fan on the limiting block can improve the qualitative effect of the adhesive, the drying of the adhesive is accelerated, the working efficiency is improved, and the practicability of the device is improved;

(2) when the device is used, after the lengthened bush is installed, the iron sheet can be welded on the surface of the blade main body in the limiting groove formed in one end of the lengthened bush, the lengthened bush is limited, the stability of the lengthened bush is improved, the lengthened bush is prevented from falling off, and the safety of the device is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the right-view structure of the engagement limiting block of the present invention;

FIG. 3 is a schematic structural view of the junction between the blade body and the extension bush of the present invention;

in the figure: 1. a blade main body; 2. iron sheets; 3. a bolt; 4. connecting a limiting block; 5. lengthening the bushing; 6. An exhaust fan; 7. a strip-shaped hole; 8. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2 and fig. 3, the present invention provides a technical solution: the utility model provides a fan blade apex extension fixture, including blade body 1, one side cover of blade body 1 is equipped with extension bush 5, add extension bush 5 and have installed linking stopper 4 with the junction of blade body 1, it is equipped with exhaust fan 6 to link up stopper 4 facial make-up, link up stopper 4 both sides and establish soon and install bolt 3, link up stopper 4 and become by two linking block groups half to half, link up stopper 4 and can play tight effect, make extension bush 5 more stable installation, prevent to appear warping after adding extension bush 5 installs, it can improve the qualitative effect of viscose agent to link up exhaust fan 6 on stopper 4 simultaneously, accelerate the colloid drying.

For better installing the lengthened bush 5, in this embodiment, preferably, an integrated extended end is disposed on the lengthened bush 5, a limit groove 8 is disposed in the extended end, and an iron sheet 2 is welded at one end of the blade body 1, so as to improve the stability of the lengthened bush 5 after installation, for better installation, in this embodiment, preferably, the blade body 1 and the lengthened bush 5 are disposed through a limit sleeve of the iron sheet 2 and the limit groove 8, for better attachment, in this embodiment, preferably, an arc surface is disposed on the inner side of the connection limit block 4, and is attached to the connection between the blade body 1 and the lengthened bush 5, so as to improve the stability of the lengthened bush 5 after installation, for better adhesion, in this embodiment, preferably, exhaust fans 6 are symmetrically disposed on two sides of the connection limit block 4, so as to accelerate drying of the colloid, for better adhesion, preferably, the surface of the extension bush 5 is provided with a strip-shaped hole 7, so that the stability of the extension bush 5 is improved.

The utility model discloses a theory of operation and use flow: when the lengthened bush 5 is additionally arranged on the blade body 1, the joint limiting block 4 can be arranged at the joint of the blade body 1 and the lengthened bush 5, the joint limiting block 4 can play a role of clamping after being screwed and fixed through the bolt 3, so that the lengthened bush 5 is more stably sleeved at one end of the blade main body 1, the lengthened bush 5 is prevented from deviating after being installed, meanwhile, the exhaust fan 6 arranged on the lengthening bush 5 can improve the qualitative effect of the adhesive, the exhaust fan 6 drives the gas on the surface of the adhesive to flow to accelerate the drying time of the adhesive, the working efficiency is improved, after the lengthening bush 5 is arranged, an iron sheet 2 can be welded on the surface of the blade body 1 in a limiting groove 8 arranged at one end of the lengthened bush 5, carry on spacingly to extension bush 5 through iron sheet 2, improve extension bush 5's stability, prevent that extension bush 5 from droing, improved the device's security.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fan blade apex extension fixture, includes blade main part (1), its characterized in that: one side cover of blade main part (1) is equipped with extension bush (5), it has linked up stopper (4) to add extension bush (5) and the junction of blade main part (1), it is equipped with exhaust fan (6) to link up stopper (4) facial make-up, the both sides that link up stopper (4) are revolved and are established and install bolt (3), link up stopper (4) and become by two linking blocks half to half.

2. A fan blade tip extender according to claim 1 wherein: the extension end of the integral type is seted up on the extension bush (5), a limiting groove (8) is arranged in the extension end, and an iron sheet (2) is welded at one end of the blade main body (1).

3. A fan blade tip extender according to claim 2 wherein: the blade main body (1) and the lengthened bushing (5) are sleeved with the limiting groove (8) in a limiting way through the iron sheet (2).

4. A fan blade tip extender according to claim 1 wherein: the cambered surface is arranged on the inner side of the connecting limiting block (4), and the cambered surface is attached to the joint of the blade main body (1) and the lengthened bushing (5).

5. A fan blade tip extender according to claim 1 wherein: exhaust fans (6) are symmetrically arranged on two sides of the connection limiting block (4).

6. A fan blade tip extender according to claim 1 wherein: the surface of the lengthened bushing (5) is provided with a strip-shaped hole (7).