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ping heng shi qiu fa
Author(s): 
Pages: 6-7
Year: Issue:  2
Journal: Valve

Keyword:  平衡式平衡球阀平衡孔出口密封操纵力矩球体部分高技术产业开发区浮动式大口径封圈;
Abstract: 平衡式球阀威海火炬高技术产业开发区郑文琦1.前言球阀具有流通能力大,压力损失小,开关迅速方便的优点。浮动式球阀的球体是浮动的,关闭时液体压力通过球体全部传给出口端密封圈,使球阀密封圈受到变载荷作用,密封副易损失效,需频繁调整垫片以保证密封效果。高压大...
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