公开(公告)号：US3966351A

公开(公告)日：1976-06-29

申请号：US470150

申请日：1974-05-15

申请人： Robert Stanley Sproule

发明人： Robert Stanley Sproule

IPC分类号： F01D11/04 ,  F04D29/16 ,  F04D29/44 ,  F01D25/18 ,  F01D25/22

CPC分类号： F01D11/04 ,  F04D29/162 ,  F04D29/442 ,  F05D2260/972 ,  Y02T50/671

摘要： A rotary radial flow machine such as a centrifugal compressor for compressing gas, and having an annular shroud encompassing the rotor blades thereof and forming with the surrounding portion of the machine an enclosed restricted access gas containment zone is provided with a gas supply to provide a low-drag gas to the enclosed zone to substantially exclude working gas passing through the compressor from entering the enclosed zone, so as to reduce the drag on the rotor. A shroud seal between the shroud and the surrounding portion of the machine limits the passage of the gas relative to the zone.

摘要翻译： 旋转径向流动机例如用于压缩气体的离心压缩机，并且具有围绕其转子叶片的环形护罩并与机器的周围部分形成封闭的受限制的进入气体容纳区域，设置有气体供应器以提供低 将气体分解到封闭区域，以基本上排除通过压缩机的工作气体进入封闭区域，以减少转子上的阻力。 护罩和机器周围部分之间的护罩密封限制了气体相对于区域的通过。