论文部分内容阅读
0引言泵是用途广泛的通用机械产品,我国水泵产品年产值超过400亿元。随着节能减排政策的深入推广,对水泵性能的抽查检验不断加强,促使越来越多泵生产企业建立相关检测试验台。目前,在更换被测泵时,采用螺栓把测压管法兰盘与被测泵法兰相连接,最大的缺点是拆装时间较长。以立式多级泵QDL16-50型为例,如果测压管采用传统连接方式,即用螺栓把测压管法兰盘与被测泵法兰联接,这一连接过程至少需要15min。另外,水泵水力设计还是建立在大量统计数据基础之上,是通过对同类型一批水泵的试验数据进行统
0 Introduction The pump is a versatile general-purpose mechanical products, China’s annual output of pump products more than 40 billion yuan. With the in-depth promotion of energy-saving and emission reduction policies, the random inspection of pump performance has been continuously strengthened, prompting more and more pump manufacturers to establish relevant test-bed. At present, when changing the pump under test, bolting the flange of the piezometer to the flange of the pump to be tested, the biggest disadvantage is that the disassembly and assembly time is longer. Taking vertical multistage pump QDL16-50 as an example, if the piezometric tube adopts the traditional connection method, that is, bolting the piezometric flange to the pump flange under test, this connection process needs at least 15 minutes. In addition, the hydraulic pump design is still based on a large number of statistical data, through the same type of test data of a group of pumps