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1. 发明申请

WO2016062416A1 A METHOD OF PUMPING A LIQUID MEDIUM, A CENTRIFUGAL PUMP AND AN IMPELLER THEREFOR 审中-公开
标题翻译：液体介质泵，离心泵及其叶轮的方法
公开(公告)号：WO2016062416A1
公开(公告)日：2016-04-28
申请号：PCT/EP2015/065355
申请日：2015-07-06
申请人： SULZER MANAGEMENT AG
发明人： AHLROTH, Jussi , GASMAN, Teemu , KOIVIKKO, Matti , TIITINEN, Kalle , VIRTANEN, Sami
IPC分类号： F04D29/22
CPC分类号： F04D29/2266 , F04D29/106 , F04D29/24 , F04D29/4293
摘要： The present invention relates to an impeller and a centrifugal pump using such. The present invention especially relates to modifying an impeller of a centrifugal pump in such a way that said pump may be used without a risk of damaging a shaft seal or like at capacities higher than that at the optimal operating point. The impeller comprises at least a hub (52) extending radially outwardly in the form of a shroud (54), at least one working vane (56) arranged on the front surface of the hub (52) and the shroud (54), at least one rear vane (60) on the rear surface of the shroud (54), and at least one balancing conduit (58) extending through said hub (52) and shroud (54), the first opening (64) of the balancing conduit (58) in the first face of the impeller hub (52) being located within the circle C formed by the radially innermost part (56e) of the at least one working vane (56), while the impeller (50) is rotated about the axis (8).
摘要翻译：本发明涉及使用这种叶轮和离心泵的叶轮和离心泵。本发明特别涉及一种离心泵的叶轮的改型，使得可以使用所述泵而不会在比最佳工作点高的容量下损坏轴封等的风险。叶轮包括至少一个轮毂（52），该轮毂（52）以罩（54）的形式径向向外延伸，至少一个工作叶片（56）布置在轮毂（52）和护罩（54）的前表面上，处于在护罩（54）的后表面上的至少一个后叶片（60）和延伸穿过所述轮毂（52）和护罩（54）的至少一个平衡导管（58），平衡导管所述叶轮毂（52）的第一面中的所述叶片（58）位于由所述至少一个工作叶片（56）的径向最内部分（56e）形成的圆C内，同时所述叶轮（50）绕所述叶轮轴（8）。

2. 发明授权

EP3209886B1 IMPELLER FOR A CENTRIFUGAL PUMP 有权
公开(公告)号：EP3209886B1
公开(公告)日：2019-09-04
申请号：EP15733774.2
申请日：2015-07-06
申请人： Sulzer Management AG
发明人： AHLROTH, Jussi , GASMAN, Teemu , KOIVIKKO, Matti , TIITINEN, Kalle , VIRTANEN, Sami
IPC分类号： F04D29/22

3. 发明公开

EP3209886A1 A METHOD OF PUMPING A LIQUID MEDIUM, A CENTRIFUGAL PUMP AND AN IMPELLER THEREFOR 有权
标题翻译：一种泵送液体介质的方法，一种离心泵及其叶轮
公开(公告)号：EP3209886A1
公开(公告)日：2017-08-30
申请号：EP15733774.2
申请日：2015-07-06
申请人： Sulzer Management AG
发明人： AHLROTH, Jussi , GASMAN, Teemu , KOIVIKKO, Matti , TIITINEN, Kalle , VIRTANEN, Sami
IPC分类号： F04D29/22
CPC分类号： F04D29/2266 , F04D29/106 , F04D29/24 , F04D29/4293
摘要： An impeller for a centrifugal pump includes a hub, a shroud extending outwardly from the hub and dividing the impeller into front and rear sides, a working vane on a first face of the hub and the shroud at the front side, a rear vane on a second face of the shroud at the rear side, and a balancing conduit extending through the hub from a first opening at the first face to a second opening at the rear side of the impeller. The first opening is disposed closer to the axis than the second opening, and the first opening is located within a circle formed by a radially innermost part of the working vane, while the impeller is rotated about the axis, and the second opening or the balancing conduit at the rear side of the impeller is located at a smallest diameter of the shroud.
摘要翻译：一种用于离心泵的叶轮包括轮毂，从轮毂向外延伸并将叶轮分成前侧和后侧的护罩，轮毂的第一面上的工作叶片和前侧的护罩，后叶片上的后叶片位于后侧的护罩的第二面以及平衡导管，该平衡导管从叶轮的第一面处的第一开口延伸至叶轮后侧的第二开口。第一开口部配置在比第二开口部更靠轴线侧的位置，第一开口部位于由工作叶片的径向最内部形成的圆内，并且叶轮绕轴线旋转，第二开口部或平衡部叶轮后侧的导管位于护罩的最小直径处。

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