风力发电机组的变桨距系统

摘要

本文主要介绍了风力发电机组的变桨距系统，其中，主要是液压系统由电器控制用来推动机械机构对桨叶进行变距。

能源问题是目前人类所面临的重大课题之一。当今我们正处在新旧能源交替发阶段，以前的旧式能源，如煤炭、石油等不可再生资源已经越来越少，已经不能满足目前人类的生产生活需要，这就需要我们找到可以替代他们的新资源。风能作为绿色资源，早在几千年前就为人类所利用。时至今日，风能在多种可再生资源中是技术上最成熟，最具竞争力的可开发资源。

国外600KW以下的机组已经大量生产，故障率从80年代初的50%下降到当前的2%以下。目前MW级机组的份额明显增大，2003年的机组平均单机容量达到1.2MW。

以前的风力机主要是通过偏航来调整转速，可是这种方法对风能的充分利用十分不利，而且响应速度很慢，所以风力机的变距机构具有很高的开发价值。液压系统的响应速度快，力——质量比大，控制精度高，可控性能好。故本设计采用液压系统，用比例阀控制液压缸可以对液压缸进行时时控制。液压缸推动同步盘经由连杆把运动传递给偏心盘进而实现变桨距。

本设计融合了机-电-液一体化的设计理念，寻求更为有效的设计理论和方法来实现桨叶的快速变距。该系统实现了设计目标，具有较高的自动化程度，运行稳定可靠，性能价格比较高，非常适合于现代化生产实际的需要。因此，该产品的推广具有十分广阔的前景。

关键词：风力发电机液压系统能源新资源

Abstract

his paper mainly introduced the wind power machine set changes the oar to be apart from the system, among them, mainly is hydraulic system to be use by the electric appliances control to push the machine organization to the oar the leaf carries on change to be apart from.

The energy problem is one of the important topics that mankind face currently. Nowadays we are being placed in the new old energy alternation hair stage, the old type energy of the past, if coal, petroleum...etc. can't the reborn resources is less and less already, have already can't satisfy the mankind's production life needs currently, this needs us to find out new resources that can act for them. The wind energy is the green resources, as early as and several thousand year ages are as the behavior type make use of. Up to now, the wind energy is the technique in variety can reborn resources up the most mature, have most the competition ability and can develop the resources.

The machine set of the foreign 600 KW the following has already mass-produced, the breakdown rate descends current 2% from 50% of the beginning of 80's the following. Currently the quota of the MW class machine set is obvious to enlarge; an equally single machine capacity of machine of 2003 attains the 1.2 Maws.

The wind force machine of the past mainly is to pass to be partial to the sail to adjust to turn soon, but this kind of method is very disadvantageous to the full exploitation of the wind energy, and respond to the speed very slow, so the wind force machine changes to be apart from the organization to have the very high development value.

The liquid presses the system to respond to the speed quick, the dint- quantity compare greatly, control the accuracy is high, can control the function good. Past origin design adoption the liquid presses the system, control the liquid to press the urn and can press the urn to carry on to the liquid to control always with the comparison valve. The liquid presses an urn of dish with synchronous push through connect the pole to deliver the sport to lack of impartiality the dish to then carry out to change the oar to be apart from.

This design blended the machine- electricity- the design principle that the liquid integral whole turn, look for the more valid design theories and methods to carry out the oar the quickly change of the leaf be apart from. That system carries out to design the target, having the higher automation degree, circulating the stable credibility; the function price is higher, very suitable for the modernization produces the actual demand. Therefore, the expansion of that product has the very vast foreground.

the wind power machine hydraulic system energy new rescouce