螺杆压缩机Screw Compressor

中文译文
螺杆压缩机Screw Compressor(中文2400字,英文1900字)
螺杆压缩机的几何形状对称分布有一个巨大的吹孔面积不包括它任何压缩机应用在高或中等压力比参与。然而，对称分布的表现出奇的好在低高压压缩机中的应用。对圆形的轮廓，更多的细节可以发现马德克，1978。
2.4.8 SRM的“A”型
SRM”“曲线如图2.11所示。它保留了所有的有利的特征的对称外形像它的简单性的同时避免其主要的缺点，即，大吹孔面积。减少的主要目标气孔面积允许主门的尖点了转子产生他们的同行，在栅极和主转子摆线分别同行，剖面主要由界的门转子和一条线穿过门转子轴。
主曲线的设置包括:D2C2,这是一个圆形的门转子与中心门口节圆,C2B2,这是一个圆在大门口转子,该中心位于外的节圆区域。这是一个新的功能实施的一些问题在一代的主旋翼同行,因为数学用于配置生成。当时通用传动装置不足。这偏心保证压力角的转子球不同于零,导致它的易于制造。 段是一个圆形的英航转子以其中心门在节圆。 扁平的叶边的主要和门出现生成EPI /圆内旋轮线，分别由G和H的门主转子组成。 是一个径向线GF2门口的转子。 这带来了同样的制造业的好处前面提到的圆偏心在最受欢迎的转子型线的评论2.4。
 
英文原文
Screw Compressor
The Symmetric profile has a huge blow-hole area which excludes it from any compressor applicat -ion where a high or even moderate pressure ratio is involved. However, the symmetric profile per -forms surprisingly well in low pressure compressor applications.More details about the circular p -rofile can be found in Margolis, 1978.
2.4.8 SRM “A” Profile
The SRM “A” profile is shown in Fig. 2.11. It retains all the favourable features of the symmetric profile like its simplicity while avoiding its main disadvantage,namely, the large blow-hole area. The main goal of reducing the blow hole area was achieved by allowing the tip points of the main and gate rotors to generate their counterparts, trochoids on the gate and main rotor respectively. T -he “A” profile consists mainly of circles on the gate rotor and one line which passes through the gate rotor axis.The set of primary curves consists of: D2C2, which is a circle on the gate rotor with the centre on the gate pitch circle, and C2B2, which is a circle on the gate rotor, the centre of whi ch lies outside the pitch circle region.This was a new feature which imposed some problems in the generation of its main rotor counterpart, because the mathematics used for profile generation at tha -t time was insufficient for general gearing. This eccentricity ensured that the pressure angles on th -e rotor pitches differ from zero, resulting in its ease of manufacture. Segment BA is a circle on th -e gate rotor with its centre on the pitch circle. The flat lobe sides on the main and gate rotors were
generated as epi/hypocycloids by points G on the gate and H on the main rotor respectively. GF2 is a radial line at the gate rotor. This brought the same benefits to manufacturing as the previously mentioned circle eccentricity on