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公开(公告)号：US5894736A
公开(公告)日：1999-04-20
申请号：US988782
申请日：1997-12-11
CPC分类号： F25B1/053 , F04D27/001 , F04D27/02 , F04D27/0261 , F25B49/022 , F25B49/025 , H02H7/08 , F25B2500/19 , F25B2600/021 , F25B2600/0253 , F25B2700/1931 , F25B2700/1933 , F25B2700/195 , F25B2700/197 , Y02B30/741
摘要： A surge detection system for use in a fluid system having a load driven by a centrifugal compressor, the compressor being driven by an electric motor. The surge detection system comprises a means for sensing a differential pressure developed across the compressor and a means for sensing a current representing input power to the motor. The surge detection system further comprises a first computing means responsive to the differential pressure developed across the compressor for indicating when a valid surge is occurring in the compressor, and a second computing means responsive to the variable speed drive current for indicating when a valid surge is occurring in the compressor.
摘要翻译： 一种用于具有由离心式压缩机驱动的负载的流体系统中的浪涌检测系统，该压缩机由电动机驱动。 浪涌检测系统包括用于感测跨压缩机产生的压差的装置和用于感测表示对电动机的输入功率的电流的装置。 浪涌检测系统还包括第一计算装置，其响应于压缩机两端产生的差压，用于指示压缩机中何时发生有效浪涌;以及第二计算装置，响应于可变速度驱动电流，用于指示何时有效浪涌是 发生在压缩机中。
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公开(公告)号：US5746062A
公开(公告)日：1998-05-05
申请号：US630842
申请日：1996-04-11
CPC分类号： F25B1/053 , F04D27/001 , F04D27/02 , F04D27/0261 , F25B49/022 , F25B49/025 , H02H7/08 , F25B2500/19 , F25B2600/021 , F25B2600/0253 , F25B2700/1931 , F25B2700/1933 , F25B2700/195 , F25B2700/197 , Y02B30/741
摘要： A surge detection system for use in a fluid system having a load driven by a centrifugal compressor, the compressor being driven by an electric motor. The surge detection system comprises a means for sensing a differential pressure developed across the compressor and a means for sensing a current representing input power to the motor. The surge detection system further comprises a first computing means responsive to the differential pressure developed across the compressor for indicating when a valid surge is occurring in the compressor, and a second computing means responsive to the variable speed drive current for indicating when a valid surge is occurring in the compressor.
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