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Megawatt-grade draught fan with direct drive structure

A megawatt, fan technology, applied in wind turbines, wind turbine combinations, engines, etc., can solve the problems of low bearing service life and high fan manufacturing costs, and achieve the effect of extending service life, simple design, and easy heat dissipation

Pending Publication Date: 2017-05-10
DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low service life of the bearing and high manufacturing cost of the fan, the present invention researches and designs a megawatt fan with a direct drive structure that has a long service life of the bearing, low manufacturing cost and is easy to install.

Method used

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  • Megawatt-grade draught fan with direct drive structure
  • Megawatt-grade draught fan with direct drive structure

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the attached drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.

[0025] Such as figure 1 , figure 2 The shown megawatt fa...

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Abstract

The invention discloses a megawatt-grade draught fan with a direct drive structure. The megawatt-grade draught fan comprises a hub, a generator and a conical hollow mandrel and is characterized by further comprising an annular baffle, the baffle and the small end face of the mandrel are connected through a bolt, and the outer diameter of the baffle is larger than that of the small end face of the mandrel; a first shaft shoulder and a second shaft shoulder are arranged at the two ends of a rotor of the generator respectively; a third shaft shoulder is arranged on the large end face side of the mandrel; two conical roller bearings are reversely mounted between the rotor of the generator and the mandrel, the conical roller bearing located on the small end face side of the mandrel serves as the first bearing, and the other conical roller bearing serves as the second bearing; the two sides of the first bearing are fixed through the first shaft shoulder and the baffle; the two sides of the second bearing are fixed through the second shaft shoulder and the third shaft shoulder. The bearings are long in service life, low in manufacturing cost and convenient to mount.

Description

technical field [0001] The invention relates to the field of wind turbines, in particular to a megawatt-level wind turbine with a direct drive structure. Background technique [0002] Wind turbine is a mechanical device that converts wind energy into electrical energy. It has the advantages of sustainable development, green and pollution-free, and can provide electrical energy for remote areas without grid coverage. The basic components of a fan include a generator and an impeller that drives the generator to rotate. The impeller is mainly composed of a hub and blades. During the power generation process, the impeller converts wind energy into rotational kinetic energy to drive a generator to generate electricity. At present, high-power horizontal-axis fans are mainly divided into double-fed and direct-drive models. The iconic difference is whether there is a gearbox on the drive chain. The double-fed fan installs the gearbox between the impeller and the generator, so that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/25F03D15/20F03D80/70F03D80/80F03D80/60
CPCY02E10/72Y02P70/50
Inventor 李成本
Owner DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND
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