标准摘要
[中文适用范围]： 本文件规定了在实验室条件下通过测量入口和出口管道中的声压来确定船用泵作为二端口声源的流动引起的管内噪声源特性的测试方法。 本试验方法适用于稳定运行的直径50mm以上的各类离心泵。 该测试方法的合适频率范围约为10Hz至1000Hz，上限频率取决于平面声波在其中传播的管道的内径。 [外文原描述]： ISO 20155:2017 specifies a test method for determining flow induced in-pipe noise source characteristics of a ship-used pump as a two-port sound source in laboratory conditions by measuring acoustic pressures in the pipe reaches of inlet and outlet. The test method is applicable to all types of centrifugal pumps with a diameter over 50 mm operating under steady conditions. The suitable frequency range of the test method is about 10 Hz to 1 000 Hz, and the upper frequency is dependent on the inner diameter of the pipe, in which the plane acoustic wave propagates.
英文名称Ships and marine technology — Test method of flow induced in-pipe noise source characteristics for a ship-used pump