| 部分负荷下螺杆制冷压缩机几何特性研究 |
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| 引用本文： | 陈文卿,邢子文,唐昊,吴华根.部分负荷下螺杆制冷压缩机几何特性研究[J].西安交通大学学报,2011,45(4):126-132. |
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| 作者姓名： | 陈文卿 邢子文 唐昊 吴华根 |
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| 作者单位： | 西安交通大学能源与动力工程学院,710049,西安 |
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| 摘 要： | 基于螺杆压缩机的工作特点,确定部分负荷下各工作过程的特征角度,建立了有效旁通面积和有效径向排气面积的计算模型,从而可以准确得到不同负荷下任一转角所对应的流通面积,为部分负荷下螺杆制冷压缩机工作特性研究奠定了基础.考察了固定块长度以及滑阀相对气缸端面的安装位置等关键设计参数对压缩机部分负荷下内容积比、有效旁通面积和有效径向排气面积的影响.研究表明,若运行工况压力比单一,固定块应选择固定式,其长度取转子长度的20%～25%为宜,若运行工况压力比多变,应选择可调式固定块,而滑阀相对气缸端面的安装角度应在安装空间允许范围内尽可能大,以提高螺杆制冷压缩机在部分负荷时的性能.
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| 关 键 词： | 螺杆制冷压缩机 部分负荷 滑阀 几何特性 |
Geometrical Characteristics of Screw Refrigeration Compressor under Part-Load Conditions |
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| CHEN Wenqing,XING Ziwen,TANG Hao,WU Huagen.Geometrical Characteristics of Screw Refrigeration Compressor under Part-Load Conditions[J].Journal of Xi'an Jiaotong University,2011,45(4):126-132. |
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| Authors: | CHEN Wenqing XING Ziwen TANG Hao WU Huagen |
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| Institution: | (School of Energy and Power Engineering,Xi′an Jiaotong University,Xi′an 710049,China) |
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| Abstract: | On the basis of the operating feature of screw compressors,the critical angles of the working chamber in different processes were determined under part-load conditions.A model was established to calculate the effective by-pass area and radial discharge area at a certain rotation angle of the male rotor under various part-load conditions.The influences of key design parameters on the geometrical characteristics of a screw refrigeration compressor under part-load conditions were investigated,such as the slide... |
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| Keywords: | screw refrigeration compressor part-load slide valve geometrical characteristics |
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