WO2022126688A1 - 一种风力发电机及用于风力发电机的原位通风系统 - Google Patents

一种风力发电机及用于风力发电机的原位通风系统 Download PDF

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Publication number
WO2022126688A1
WO2022126688A1 PCT/CN2020/138241 CN2020138241W WO2022126688A1 WO 2022126688 A1 WO2022126688 A1 WO 2022126688A1 CN 2020138241 W CN2020138241 W CN 2020138241W WO 2022126688 A1 WO2022126688 A1 WO 2022126688A1
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Prior art keywords
balance
support body
balance disc
disc
ventilation system
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PCT/CN2020/138241
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English (en)
French (fr)
Inventor
王建良
龙英睿
李岩
邹强龙
邓方林
郭勇
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中车株洲电机有限公司
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Publication of WO2022126688A1 publication Critical patent/WO2022126688A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to the technical field of winding motors, in particular to an in-situ ventilation system for wind turbines. It also relates to a wind turbine.
  • the fluid in the generator is the main medium to take the heat out of the motor, and the flow rate of the internal air passage is very important to the temperature rise of the generator.
  • Both the stator and the rotor of the wound wind turbine have windings, and the rotor support frame 4 is installed on the end shaft.
  • the fluid needs to wash the rotor winding before entering the shaft ribs, and then passes through 90° Pass through the ventilation holes on the rotor support frame 4 after turning.
  • there are three more local wind resistances at the end of the generator namely, the rotor winding is washed away, the ventilation section before entering the rotor support frame 4 is changed from large to small, and the ventilation section after exiting the rotor support frame 4 is changed from small to small. big.
  • the existing winding type wind turbine has a large internal flow resistance and low internal air flow, while the rotor support frame 4 of the double-fed wind turbine can only support the rotor, fix the end ring, etc. At the same time, the rotor balance plate 5 also occupies a certain space at the end of the motor, which increases the wind resistance of the inner air path.
  • the purpose of the present invention is to provide an in-situ ventilation system for wind turbines. With the movement of the rotor of the wind turbine, the blades of the support frame provide a forced ventilation effect, reduce the internal flow resistance of the generator, and increase the power generation. The internal air flow of the generator reduces the temperature rise of the generator. Another object of the present invention is to provide a wind power generator.
  • the present invention provides an in-situ ventilation system for a wind turbine, including a support frame, the support frame is provided with an outer support body of the bracket for installing and supporting the rotor and an inner support body of the bracket for installing and fixing the rotating shaft. , a support frame blade is arranged between the outer support body of the bracket and the inner support body of the bracket.
  • the balance disc is provided with a balance disc blade, and the balance disc is detachably connected to the balance block.
  • the balance disc is provided with a balance disc outer support body for detachably connecting the balance weight and a balance disc inner support body for installing and fixing the rotating shaft, and the balance disc blade is provided on the balance disc outer support body and the inner support body of the balance disc.
  • the balance disc includes a first balance disc and a second balance disc located on the inner ring and the outer ring, respectively, and the first balance disc includes a first balance disc outer support body, a first balance disc inner support body, and a device A first balance disc blade between the two, the second balance disc includes a second balance disc outer support body, a second balance disc inner support body, and a second balance disc blade arranged therebetween.
  • the support frame is integrally or separately provided, and/or; the first balance disc is integrally or separately provided, and/or; the second balance disc is integrally or separately provided .
  • the inner support body of the bracket is welded or clamped to the rotating shaft
  • the outer support body of the bracket is welded or clamped to the support ring of the bracket
  • the support bracket blades are respectively connected to the inner support body of the bracket and the bracket.
  • the bracket support ring is welded or clamped to be fixed.
  • the inner support body of the first balance disc is used to be welded or clamped to the rotating shaft, and the first balance disc blades are respectively connected to the inner support body of the first balance disc and the outer support body of the first balance disc. Solder or snap-fit.
  • the inner support body of the second balance disc is used to be welded or clamped to the rotating shaft, and the second balance disc blades are respectively connected to the inner support body of the second balance disc and the outer support body of the second balance disc. Solder or snap-fit.
  • the balance weight is fixed to the outer support body of the balance plate by means of bolts.
  • the present invention also provides a wind power generator, comprising the in-situ ventilation system for the wind power generator according to any one of the above.
  • the in-situ ventilation system for wind turbines includes a support frame, the support frame is provided with an outer support body and an inner support body, and the outer support body is provided to install and support the rotor, and the inner support body is provided to support the rotor.
  • the support body is installed with a fixed rotating shaft, and a support frame blade is arranged between the outer support body of the support and the support body in the support frame; during assembly, the support frame supports the rotor and fixes the rotor to the rotating shaft together; when in use, the rotating shaft drives the support frame and the rotating shaft.
  • the supporting frame blades of the supporting frame rotate synchronously and drive the air flow.
  • the supporting frame blades provide a forced ventilation effect, which reduces the internal flow resistance of the generator.
  • the internal air flow of the generator is increased, and the temperature rise of the generator is reduced.
  • FIG. 1 is a schematic structural diagram of an in-situ ventilation system for a wind turbine provided by an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a rotor support frame in the prior art
  • Fig. 3 is the structural representation of rotor balance disc in the prior art
  • FIG. 4 is a schematic structural diagram of a balance disc when the first balance disc and the second balance disc are combined according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of an in-situ ventilation system for a wind turbine according to an embodiment of the present invention
  • FIG. 2 is a structural schematic diagram of a rotor support frame in the prior art
  • FIG. 3 is Schematic diagram of the structure of the rotor balance disk in the prior art
  • FIG. 4 is a schematic structural diagram of the balance disk when the first balance disk and the second balance disk are combined according to an embodiment of the present invention.
  • the in-situ ventilation system for wind turbines includes a support frame 1, which is provided and mainly includes two parts: an outer support body 11 and an inner support body 14 , the outer support body 11 of the bracket is located on the outer ring of the support frame 1 and provides the function of installing and supporting the rotor, and the inner support body 14 of the bracket is located in the inner ring of the supporting frame 1 and provides the function of installing and fixing the rotating shaft.
  • Supporting frame blades 15 are arranged between the supporting bodies 14 .
  • the function of the support frame 1 in this embodiment is similar to that of the rotor support frame 4 in the prior art, and is also used to install the rotor and fix it to the rotating shaft; the difference is that the support frame 1 in this embodiment
  • the structure of the part between the inner support body 14 of the bracket and the outer support body 11 of the bracket is improved, and the additional support bracket blades 15 are added to replace the ventilation holes, so that when the support bracket 1 and the rotor rotate on the rotating shaft, the support bracket blades 15 are synchronized Rotating and driving the airflow, at this time, with the rotor movement of the wind turbine, the supporting frame blades 15 provide a forced ventilation effect, which reduces the internal flow resistance of the generator, increases the internal air flow of the generator, and reduces the power generation. Machine temperature rise.
  • the inner support 14 of the stent and the outer support 11 of the stent are concentric steel rings with different inner diameters
  • the radial dimension of the inner support 14 is smaller than the radial dimension of the outer support 11 of the stent
  • the support blades 15 are at both ends.
  • Steel blades fixed to the inner support body 14 of the bracket and the outer support body 11 of the bracket respectively.
  • other metal or non-metal materials as long as the beneficial effects of being supported by the rotor, fixed to the rotating shaft and driven by the blades to flow air can be achieved, they also belong to the description scope of this embodiment.
  • the in-situ ventilation system for wind turbines further includes a balance disc, the balance disc is provided with balance disc blades, and the balance disc and the balance block are detachably connected.
  • the function of the balance disc in this embodiment is similar to that of the rotor balance disc 5 in the prior art, and it is also used to be fixed on the rotating shaft and provide weight gain and balance; the difference is that the function of the balance disc in this embodiment is The balance plate not only improves the way of weight gain and balance, but also increases the internal air flow of the generator.
  • the balancing weight is detachably connected to the balancing plate, and different numbers and specifications of balancing weights can be selected as required, and the balancing weight can be fixed to the balancing plate or removed from the balancing plate to achieve different weight gain and balancing effects.
  • the balance disc also adopts a blade structure similar to that of the support frame 1. At this time, the balance disc in this embodiment replaces the prior art with the structure of the balance disc blade.
  • the ventilation holes of the rotor balance disc 5 in the middle are equivalent to transforming the existing support ribs between the ventilation holes into blades with a certain inclination angle, so that when rotating on the rotating shaft, the balance disc blades rotate synchronously and drive the airflow.
  • the effect of the balance disc blade is similar to that of the support frame blade 15. With the rotor movement of the wind turbine, the balance disc blade provides a forced ventilation effect. At this time, combined with the forced ventilation effect of the support frame blade 15, the balance disc blade and the support frame blade 15 provides double forced ventilation effect, further reduces the internal flow resistance of the generator, further increases the internal air flow of the generator, and further reduces the temperature rise of the generator.
  • the balance disc is provided with an outer support body of the balance disc and an inner support body of the balance disc, the outer support body of the balance disc and the inner support body of the balance disc are concentric steel rings with different inner diameters, and the radial dimension of the support body in the balance disc is smaller than that of the balance disc.
  • the outer support body of the balance disc is detachably connected to the balance block, the inner support body of the balance disc is installed with a fixed rotating shaft, and the balance disc blade is fixed at both ends to the balance disc outer support body and the balance disc inner support body. of steel blades.
  • the balance disc is provided with two sets of balance disc blades.
  • the balance disc includes a first balance disc 2 and a second balance disc 3 located on the inner ring and the outer ring respectively, which are arranged on the inner ring and the outer ring respectively.
  • the first balance disc 2 is the first balance disc blade 24
  • the second balance disc blade 34 is arranged on the second balance disc 3 .
  • the number and inclination angle of the supporting frame blades 15 , the first balance disc blades 24 and the second balance disc blades 34 can be reasonably designed according to the size of the motor end space, mechanical strength, rotor working characteristics, and system wind resistance characteristics. , thickness and width parameters.
  • the first balance disc 2 and the second balance disc 3 can be set as the inner ring and the outer ring of the same circular steel ring, or can be respectively set as two independent circular steel rings.
  • the first balance disc 2 and the second balance disc 3 are provided with respective balance disc outer support bodies and balance disc inner support bodies.
  • the first balance disc 2 includes a first balance disc outer support body 22 and a first balance disc inner support body 23, and the first balance disc outer support body 22 and the first balance disc inner support body 23 are concentric with different inner diameters Steel ring, the radial dimension of the inner support body 23 of the first balance disc is smaller than the radial dimension of the outer support body 22 of the first balance disc, and the first balance disc blade 24 has two ends respectively connected to the first balance disc outer support body 22 and the first balance disc outer support body 22. A steel blade fixed to the support body 23 in the balance disc.
  • the second balance disc 3 includes a second balance disc outer support body 32 and a second balance disc inner support body, and the second balance disc outer support body 32 and the second balance disc inner support body are concentric steel rings with different inner diameters , the radial dimension of the inner support body of the second balance disc is smaller than the radial dimension of the outer support body 32 of the second balance disc. Steel blades fixed to the inner support.
  • the balance weight is fixed to the outer support body of the balance plate by means of bolts.
  • the balance weight includes a first balance weight 21 and a second balance weight 31 respectively disposed on the first balance disc 2 and the second balance disc 3 , the outer support body 22 of the first balance disc and the outside of the second balance disc
  • the circumference of the support body 32 can be provided with connecting holes evenly or irregularly.
  • the first balance block 21 is fixed to the outer support body 22 of the first balance plate by bolts
  • the second balance block 31 is fixed to the outer support body of the second balance plate by bolts.
  • Body 32 up to 24 different balance blocks can be fixed.
  • the actual number is determined according to the rotor dynamic balance test. It is not necessary to design a specific balance plate for a specific motor. Its application is more extensive.
  • the balance plate structure is platformized ,Universal.
  • the first balance disc 2 and the second balance disc 3 share the inner ring of the concentric steel ring, that is, the support body 23 in the first balance disc and the support body in the second balance disc are the same
  • An inner ring structure at this time, the first balance disk outer support body 22 and the second balance disk outer support body 32 are the outer ring structures of the first balance disk 2 and the second balance disk 3 respectively, so that the first balance disk blades 24 are provided
  • the second balance disc blades 34 are arranged between the inner ring structure and the outer ring structure of the second balance disc 3 .
  • the first balance disc 2 and the second balance disc 3 are further combined, the first balance disc 2 is used as an inner ring structure, and the second balance disc 3 is used as an outer ring structure.
  • the combined blade 6 is only arranged between the inner ring structure and the outer ring structure of the support frame 1, and the combined blade 6 is installed and positioned through the slot 7 provided in the inner ring structure and the outer ring structure and fixed by welding. This method should belong to the same category. The scope of the description of this example.
  • each component of the support frame 1 can be set either in one piece or separately, such as integral casting and assembling, etc., which also belong to the scope of the description of this embodiment; similarly, the first balance plate 2 and the The second balance plate 3 may also be provided in one piece or separately, such as integral casting, assembly and assembly, etc., which also belong to the scope of the description of this embodiment.
  • the inner support body 14 of the bracket is welded or clamped to the rotating shaft, and the outer support body 11 of the bracket is welded or clamped to the bracket support ring 12.
  • the bracket support ring 12 is specifically an outer steel ring for supporting the rotor.
  • the blades 15 are respectively welded or clamped to the support body 14 in the bracket and the bracket support ring 12 .
  • the keyway 13 can be used to realize the clamping.
  • the inner side of the support body 14 in the bracket is provided with a keyway 13
  • the outer side of the support body 14 in the bracket is provided with a blade keyway
  • the inner side of the bracket support ring 12 is provided with a blade keyway ;
  • the shaft is first accurately positioned with the support body 14 in the bracket through the keyway 13, and then fixed by welding; the inner ring of the support frame blade 15 and the support body 14 in the bracket are aligned and welded together through the blade keyway.
  • the outer ring is combined with the bracket support ring 12 by aligning and welding the blade keyway.
  • the first balance disc inner support body 23 is welded or clamped to the rotating shaft, and the first balance disc blades 24 are welded or clamped to the first balance disc inner support body 23 and the first balance disc outer support body 22 respectively. .
  • the inner support body of the second balance disc is welded or clamped to the rotating shaft, and the second balance disc blades 34 are welded or clamped to the inner support body of the second balance disc and the outer support body 32 of the second balance disc respectively.
  • first balance disc blade 24 and the second balance disc blade 34 may refer to the way of aligning and welding the blade keyway of the support frame blade 15, which will not be repeated here.
  • the bracket steel ring 42 is connected to the bracket support 41 by welding, the bracket support 41 is fixed on the rotating shaft by welding and combined with the rotor keyway 43, and the rotor balance plate 5 is directly welded to the rotating shaft.
  • the way of connecting the support frame 1, the first balance disc 2 and the second balance disc 3 to the rotor and the rotating shaft is the same as that of the existing rotor support frame 4, the rotor balance disc 5 and the rotor and the rotating shaft.
  • the connection method is similar. In addition to supporting the rotor and fixing the end ring, it also has the effect of enhancing ventilation and increasing the flow of the inner air path.
  • the in-situ ventilation system for wind turbines is especially suitable for doubly-fed wind turbines.
  • the rotor is like a centrifugal fan, and the blades of the support frame 1, the first balance disc 2 and the second balance disc 3 are equivalent to providing The effect of the three axial flow fans in series, when in use, the support frame blades 15, the first balance disc blades 24 and the second balance disc blades 34 rotate coaxially with the generator rotor, forming a negative pressure at the end, so that the rotor power source A larger pressure head is generated, which is conducive to the cooling medium flowing through the support frame 1, providing an increase in the internal air flow to enhance the ventilation and cooling effect of the generator, which is conducive to improving the safety and reliability of the generator during operation;
  • the internal air flow can be increased without changing the design of the stator and rotor, and the temperature rise of the generator can be reduced; due to the ability to increase the internal air flow, on the premise of meeting the temperature rise performance
  • the present invention also provides a wind power generator, including the above-mentioned in-situ ventilation system for wind power generators, which should have all the beneficial effects of the above-mentioned in-situ ventilation system for wind power generators, which will not be repeated here.

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Abstract

一种风力发电机及用于风力发电机的原位通风系统，用于风力发电机的原位通风系统包括支撑架，所述支撑架设有用于安装支撑转子的支架外支撑体以及用于安装固定转轴的支架内支撑体，所述支架外支撑体和所述支架内支撑体之间设有支撑架叶片。上述用于风力发电机的原位通风系统随风力发电机的转子运动，支撑架叶片提供强迫通风效果，减小了发电机的内部流阻，增大了发电机的内风路流量，降低了发电机温升。

Description

一种风力发电机及用于风力发电机的原位通风系统
本申请要求于2020年12月16日提交中国专利局、申请号为202011492939.6、发明名称为“一种风力发电机及用于风力发电机的原位通风系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及绕线式电机技术领域，特别涉及一种用于风力发电机的原位通风系统。还涉及一种风力发电机。
背景技术
在风力发电机中，发电机内流体是将电机内热量带出去的主要媒介，内风路流量的大小对发电机的温升至关重要。
请参考图2和图3，绕线式风力发电机定转子都存在绕组，并且在端部转轴上均装有转子支撑架4，流体在进入转轴筋板之前需要冲刷转子绕组，再经过90°拐弯后穿过转子支撑架4上的通风孔。与异步风力发电机相比，在发电机端部多了三个局部风阻，分别为冲刷转子绕组、进入转子支撑架4前通风截面由大变小、流出转子支撑架4后通风截面由小变大。现有的绕线式风力发电机内部流阻较大，内风路流量低，而双馈风力发电机的转子支撑架4只能实现支撑转子、固定端环等作用，不具备增强通风、增加内风路流量的效果；同时，转子平衡盘5在电机端部也占用一定空间，增大了内风路的风阻。
因此，如何能够提供一种降低绕线式风力发电机的内部流阻、提高内风路流量的用于风力发电机的辅助通风系统是本领域技术人员亟需解决的技术问题。
发明内容
本发明的目的是提供一种用于风力发电机的原位通风系统，随风力发 电机的转子运动，支撑架叶片提供强迫通风效果，减小了发电机的内部流阻，增大了发电机的内风路流量，降低了发电机温升。本发明的另一目的是提供一种风力发电机。
为实现上述目的，本发明提供一种用于风力发电机的原位通风系统，包括支撑架，所述支撑架设有用于安装支撑转子的支架外支撑体以及用于安装固定转轴的支架内支撑体，所述支架外支撑体和所述支架内支撑体之间设有支撑架叶片。
优选地，包括平衡盘，所述平衡盘设有平衡盘叶片，所述平衡盘与平衡块可拆卸连接。
优选地，所述平衡盘设有用于可拆卸连接所述平衡块的平衡盘外支撑体以及用于安装固定转轴的平衡盘内支撑体，所述平衡盘叶片设于所述平衡盘外支撑体和所述平衡盘内支撑体之间。
优选地，所述平衡盘包括分别位于内圈和外圈的第一平衡盘和第二平衡盘，所述第一平衡盘包括第一平衡盘外支撑体、第一平衡盘内支撑体以及设于二者之间的第一平衡盘叶片，所述第二平衡盘包括第二平衡盘外支撑体、第二平衡盘内支撑体以及设于二者之间的第二平衡盘叶片。
优选地，所述支撑架为一体设置或分体设置，和/或；所述第一平衡盘为一体设置或分体设置，和/或；所述第二平衡盘为一体设置或分体设置。
优选地，所述支架内支撑体用以与转轴焊接或卡接固定，所述支架外支撑体与支架支撑圈焊接或卡接固定，所述支撑架叶片分别与所述支架内支撑体和所述支架支撑圈焊接或卡接固定。
优选地，所述第一平衡盘内支撑体用以与转轴焊接或卡接固定，所述第一平衡盘叶片分别与所述第一平衡盘内支撑体和所述第一平衡盘外支撑体焊接或卡接固定。
优选地，所述第二平衡盘内支撑体用以与转轴焊接或卡接固定，所述第二平衡盘叶片分别与所述第二平衡盘内支撑体和所述第二平衡盘外支撑体焊接或卡接固定。
优选地，所述平衡块通过螺栓固定于所述平衡盘外支撑体。
本发明还提供一种风力发电机，包括如上述任一项所述的用于风力发电机的原位通风系统。
相对于上述背景技术，本发明所提供的用于风力发电机的原位通风系统包括支撑架，支撑架设有支架外支撑体和支架内支撑体，提供支架外支撑体安装支撑转子，提供支架内支撑体安装固定转轴，在支架外支撑体和支架内支撑体之间设置有支撑架叶片；在装配时，支撑架支撑转子，并将转子一同固定于转轴；在使用时，转轴带动支撑架和转子转动，在转动作用下，支撑架的支撑架叶片同步转动并驱使气流流动，此时随风力发电机的转子运动，支撑架叶片提供强迫通风效果，减小了发电机的内部流阻，增大了发电机的内风路流量，降低了发电机温升。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1为本发明实施例提供的用于风力发电机的原位通风系统的结构示意图；
图2为现有技术中的转子支撑架结构示意图；
图3为现有技术中转子平衡盘的结构示意图；
图4为本发明实施例提供的第一平衡盘和第二平衡盘结合时的平衡盘的结构示意图。
其中：
1-支撑架、2-第一平衡盘、3-第二平衡盘、4-转子支撑架、5-转子平衡盘、6-组合叶片、7-卡槽、11-支架外支撑体、12-支架支撑圈、13-键槽、14-支架内支撑体、15-支撑架叶片、21-第一平衡块、22-第一平衡盘外支撑 体、23-第一平衡盘内支撑体、24-第一平衡盘叶片、31-第二平衡块、32-第二平衡盘外支撑体、34-第二平衡盘叶片、41-支架支撑、42-支架钢圈、43-转子键槽。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
为了使本技术领域的技术人员更好地理解本发明方案，下面结合附图和具体实施方式对本发明作进一步的详细说明。
请参考图1至图4，其中，图1为本发明实施例提供的用于风力发电机的原位通风系统的结构示意图，图2为现有技术中的转子支撑架结构示意图，图3为现有技术中转子平衡盘的结构示意图，图4为本发明实施例提供的第一平衡盘和第二平衡盘结合时的平衡盘的结构示意图。
在第一种具体的实施方式中，本发明所提供的用于风力发电机的原位通风系统包括支撑架1，支撑架1设置并主要包括支架外支撑体11和支架内支撑体14两部分，支架外支撑体11位于支撑架1的外圈并提供安装支撑转子的作用，支架内支撑体14位于支撑架1的内圈并提供安装固定转轴的作用，在支架外支撑体11和支架内支撑体14之间设置有支撑架叶片15。
需要说明的是，本实施例中的支撑架1与现有技术的转子支撑架4的作用相似，同样是为了安装转子并固定于转轴；有所区别的是，本实施例中的支撑架1改进了支架内支撑体14和支架外支撑体11之间部分的结构，采用额外增设支撑架叶片15以取代通风孔的方式，使得支撑架1和转子在转轴上转动时，支撑架叶片15同步转动并驱使气流流动，此时随风力发电机的转子运动，支撑架叶片15提供强迫通风效果，减小了发电机的内部流 阻，增大了发电机的内风路流量，降低了发电机温升。
示例性的，支架内支撑体14和支架外支撑体11为内径不同的同心钢圈，支架内支撑体14的径向尺寸小于支架外支撑体11的径向尺寸，支撑架叶片15为两端分别与支架内支撑体14和支架外支撑体11固定的钢材叶片。与此类似的，至于其他金属或非金属材质，只要能够实现供转子支撑、固定于转轴以及叶片驱使空气流动的有益效果，同应属于本实施例的说明范围。
在此基础上，该用于风力发电机的原位通风系统还包括平衡盘，平衡盘设有平衡盘叶片，平衡盘与平衡块可拆卸连接。
需要说明的是，本实施例中的平衡盘与现有技术的转子平衡盘5的作用相似，同样是为了固定于转轴并提供增重平衡的作用；有所区别的是，本实施例中的平衡盘既改进了增重平衡的方式，还增大了发电机的内风路流量。
在本实施例中，平衡块与平衡盘可拆卸连接，可根据需要选择不同数量和规格的平衡块，将平衡块固定于平衡盘或由平衡盘拆下，即可实现不同的增重平衡效果，无需整体替换平衡盘，拆装方便快捷；除此以外，平衡盘也采用了与支撑架1相似的叶片结构，此时本实施例中的平衡盘以平衡盘叶片的结构形式替代现有技术中的转子平衡盘5的通风孔，相当于将现有的通风孔之间的支撑筋板改造成具有一定倾斜角度的叶片，使得在转轴上转动时，平衡盘叶片同步转动并驱使气流流动，平衡盘叶片的效果与支撑架叶片15的效果相似，随风力发电机的转子运动，平衡盘叶片提供强迫通风效果，此时结合支撑架叶片15的强迫通风效果，平衡盘叶片和支撑架叶片15提供双重的强迫通风效果，进一步减小了发电机的内部流阻，进一步增大了发电机的内风路流量，进一步降低了发电机温升。
示例性的，平衡盘设有平衡盘外支撑体和平衡盘内支撑体，平衡盘外支撑体和平衡盘内支撑体为内径不同的同心钢圈，平衡盘内支撑体的径向尺寸小于平衡盘外支撑体的径向尺寸，平衡盘外支撑体与平衡块可拆卸连 接，平衡盘内支撑体安装固定转轴，平衡盘叶片为两端分别与平衡盘外支撑体和平衡盘内支撑体固定的钢材叶片。
为了进一步增大了发电机的内风路流量，平衡盘设置有两组平衡盘叶片，此时平衡盘包括分别位于内圈和外圈的第一平衡盘2和第二平衡盘3，设置于第一平衡盘2的为第一平衡盘叶片24，设置于第二平衡盘3的为第二平衡盘叶片34。在设计过程中，可以根据电机端部空间大小、机械强度、转子工作特性、系统风阻特性，进而合理设计支撑架叶片15、第一平衡盘叶片24与第二平衡盘叶片34的个数、倾角、厚度以及宽度等参数。
在本实施例中，第一平衡盘2和第二平衡盘3可设置为同一个圆形钢圈的内圈和外圈，也可分别设置为两个独立的圆形钢圈，当设置为两个独立的圆形钢圈时，第一平衡盘2和第二平衡盘3均设有各自的平衡盘外支撑体和平衡盘内支撑体。
具体而言，第一平衡盘2包括第一平衡盘外支撑体22和第一平衡盘内支撑体23，第一平衡盘外支撑体22和第一平衡盘内支撑体23为内径不同的同心钢圈，第一平衡盘内支撑体23的径向尺寸小于第一平衡盘外支撑体22的径向尺寸，第一平衡盘叶片24为两端分别与第一平衡盘外支撑体22和第一平衡盘内支撑体23固定的钢材叶片。
具体而言，第二平衡盘3包括第二平衡盘外支撑体32和第二平衡盘内支撑体，第二平衡盘外支撑体32和第二平衡盘内支撑体为内径不同的同心钢圈，第二平衡盘内支撑体的径向尺寸小于第二平衡盘外支撑体32的径向尺寸，第二平衡盘叶片34为两端分别与第二平衡盘外支撑体32和第二平衡盘内支撑体固定的钢材叶片。
示例性的，平衡块通过螺栓固定于平衡盘外支撑体。
在本实施例中，平衡块包括分别设置于第一平衡盘2和第二平衡盘3的第一平衡块21和第二平衡块31，第一平衡盘外支撑体22和第二平衡盘外支撑体32的圆周上可等距均匀或不规则设置连接孔，第一平衡块21通过螺栓固定于第一平衡盘外支撑体22，第二平衡块31通过螺栓固定于第 二平衡盘外支撑体32，最多可固定两种不同的平衡块二十四个，其实际数量根据转子动平衡试验确定，不用针对具体电机设计特定的平衡盘，其应用的电机更加广泛，将平衡盘结构平台化，通用化。
在一种具体的实施方式中，第一平衡盘2和第二平衡盘3共用同心钢圈的内圈，也就是说，第一平衡盘内支撑体23和第二平衡盘内支撑体为同一个内圈结构，此时第一平衡盘外支撑体22和第二平衡盘外支撑体32分别为第一平衡盘2和第二平衡盘3的外圈结构，使得第一平衡盘叶片24设置在该内圈结构和第一平衡盘2的外圈结构之间，第二平衡盘叶片34设置在该内圈结构和第二平衡盘3的外圈结构之间。
在另一种具体的实施方式中，如图4所示，第一平衡盘2和第二平衡盘3进一步结合，第一平衡盘2作为内圈结构，第二平衡盘3作为外圈结构，仅在支撑架1的内圈结构和外圈结构之间设置组合叶片6，组合叶片6通过设置在内圈结构和外圈结构的卡槽7安装定位并通过焊接固定，该种方式同应属于本实施例的说明范围。
其中，支撑架1的各部件既可采用一体设置也可采用分体设置，如整体铸造成型和装配组装等，同应属于本实施例的说明范围；与此类似的，第一平衡盘2和第二平衡盘3也可采用一体设置或分体设置，如整体铸造成型和装配组装等，同应属于本实施例的说明范围。
示例性的，支架内支撑体14与转轴焊接或卡接固定，支架外支撑体11与支架支撑圈12焊接或卡接固定，支架支撑圈12具体为用于支撑转子的外钢圈，支撑架叶片15分别与支架内支撑体14和支架支撑圈12焊接或卡接固定。
在本实施例中，可采用键槽13的方式实现卡接，支架内支撑体14的内侧设置有键槽13，支架内支撑体14的外侧设置有叶片键槽，支架支撑圈12的内侧设置有叶片键槽；转轴先通过键槽13与支架内支撑体14准确定位，再通过焊接固定；支撑架叶片15的内圈与支架内支撑体14通过叶片键槽对齐和焊接的方式结合在一起，支撑架叶片15的外圈与支架支撑圈 12通过叶片键槽对齐和焊接的方式结合在一起。
示例性的，第一平衡盘内支撑体23与转轴焊接或卡接固定，第一平衡盘叶片24分别与第一平衡盘内支撑体23和第一平衡盘外支撑体22焊接或卡接固定。
示例性的，第二平衡盘内支撑体与转轴焊接或卡接固定，第二平衡盘叶片34分别与第二平衡盘内支撑体和第二平衡盘外支撑体32焊接或卡接固定。
与此类似的，第一平衡盘叶片24和第二平衡盘叶片34的焊接或卡接固定的形式可参照支撑架叶片15的叶片键槽对齐和焊接的方式，这里不再一一赘述。
在现有技术中，支架钢圈42通过焊接的方式连接在支架支撑41上，支架支撑41又通过焊接与转子键槽43组合的方式固定在转轴上，转子平衡盘5则是直接焊接在转轴上。需要说明的是，本实施例中支撑架1、第一平衡盘2和第二平衡盘3与转子和转轴的连接方式，与现有的转子支撑架4和转子平衡盘5与转子和转轴的连接方式相似，除了实现支撑转子、固定端环等作用，还具备增强通风、增加内风路流量的效果。
该用于风力发电机的原位通风系统尤其适用于双馈风力发电机，在转轴转动时，转子如同离心风扇，支撑架1、第一平衡盘2和第二平衡盘3的叶片相当于提供三个轴流风扇串联的效果，在使用时，支撑架叶片15、第一平衡盘叶片24和第二平衡盘叶片34与发电机转子同轴旋转，在端部形成负压，使得转子动力源产生更大的压头，有利于冷却介质流过支撑架1，提供增大内风路流量以增强发电机通风冷却效果，有利于提高发电机运行时的安全性与可靠性；对于发电机定转子圆系选择受限的情况下，可以不改动定转子设计就可以增加内风路流量，降低发电机温升；由于能够增加内风路流量，在满足发电机温升性能的前提下，更大的温升裕量为发电机降成本设计提供了更大的空间；由于增大了发电机内风路流量，为大功率风力发电机的研制提供了可能性。
本发明还提供一种风力发电机，包括上述用于风力发电机的原位通风系统，应具有上述用于风力发电机的原位通风系统的全部有益效果，这里不再一一赘述。
需要说明的是，在本说明书中，诸如第一和第二之类的关系术语仅仅用来将一个实体与另外几个实体区分开来，而不一定要求或者暗示这些实体之间存在任何这种实际的关系或者顺序。
以上对本发明所提供的风力发电机及用于风力发电机的原位通风系统进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。

Claims (10)

  1. 一种用于风力发电机的原位通风系统，其特征在于，包括支撑架(1)，所述支撑架(1)设有用于安装支撑转子的支架外支撑体(11)以及用于安装固定转轴的支架内支撑体(14)，所述支架外支撑体(11)和所述支架内支撑体(14)之间设有支撑架叶片(15)。
  2. 根据权利要求1所述的用于风力发电机的原位通风系统，其特征在于，包括平衡盘，所述平衡盘设有平衡盘叶片，所述平衡盘与平衡块可拆卸连接。
  3. 根据权利要求2所述的用于风力发电机的原位通风系统，其特征在于，所述平衡盘设有用于可拆卸连接所述平衡块的平衡盘外支撑体以及用于安装固定转轴的平衡盘内支撑体，所述平衡盘叶片设于所述平衡盘外支撑体和所述平衡盘内支撑体之间。
  4. 根据权利要求3所述的用于风力发电机的原位通风系统，其特征在于，所述平衡盘包括分别位于内圈和外圈的第一平衡盘(2)和第二平衡盘(3)，所述第一平衡盘(2)包括第一平衡盘外支撑体(22)、第一平衡盘内支撑体(23)以及设于二者之间的第一平衡盘叶片(24)，所述第二平衡盘(3)包括第二平衡盘外支撑体(32)、第二平衡盘内支撑体以及设于二者之间的第二平衡盘叶片(34)。
  5. 根据权利要求4所述的用于风力发电机的原位通风系统，其特征在于，所述支撑架(1)为一体设置或分体设置，和/或；所述第一平衡盘(2)为一体设置或分体设置，和/或；所述第二平衡盘(3)为一体设置或分体设置。
  6. 根据权利要求5所述的用于风力发电机的原位通风系统，其特征在于，所述支架内支撑体(14)用以与转轴焊接或卡接固定，所述支架外支撑体(11)与支架支撑圈(12)焊接或卡接固定，所述支撑架叶片(15)分别与所述支架内支撑体(14)和所述支架支撑圈(12)焊接或卡接固定。
  7. 根据权利要求5所述的用于风力发电机的原位通风系统，其特征在 于，所述第一平衡盘内支撑体(23)用以与转轴焊接或卡接固定，所述第一平衡盘叶片(24)分别与所述第一平衡盘内支撑体(23)和所述第一平衡盘外支撑体(22)焊接或卡接固定。
  8. 根据权利要求5所述的用于风力发电机的原位通风系统，其特征在于，所述第二平衡盘内支撑体用以与转轴焊接或卡接固定，所述第二平衡盘叶片(34)分别与所述第二平衡盘内支撑体和所述第二平衡盘外支撑体(32)焊接或卡接固定。
  9. 根据权利要求3至6任一项所述的用于风力发电机的原位通风系统，其特征在于，所述平衡块通过螺栓固定于所述平衡盘外支撑体。
  10. 一种风力发电机，其特征在于，包括如权利要求1至9任一项所述的用于风力发电机的原位通风系统。
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