ISO 14085-3:2024 航空航天系列 液压滤芯的试验方法 第3部分：过滤效率和保持能力

标准编号：ISO 14085-3:2024

中文名称：航空航天系列 液压滤芯的试验方法 第3部分：过滤效率和保持能力

英文名称：Aerospace series — Test methods for hydraulic filter elements — Part 3: Filtration efficiency and retention capacity

发布日期：2024-05

标准范围

本文件描述了在可重复条件下测量航空和航天液压油系统中使用的过滤元件的过滤效率的两种方法。它可以在根据ISO评估滤芯的整体特性时应用？14085-1，或单独地。由于过滤元件的过滤效率在其使用寿命期间会随着其堵塞而变化，因此该测试方法规定通过使用在线颗粒计数器来连续测量，其中测试污染物的连续注入和未被测试过滤元件保留的颗粒的再循环，直到元件两端的压差达到给定的最终或“终端”值。该文件允许在稳定或循环流动条件下测量效率。它还适用于在循环流测试时测量由过滤元件产生的稳定污染水平。本文件不适用于在重复使用条件下鉴定过滤元件；这只能通过为此目的制定的特定测试方案来完成，包括实际使用条件，例如工作流体或污染。应用本文档得出的测试数据可用于比较航空航天液压滤芯的性能。

This document describes two methods to measure in repeatable conditions the filtration efficiency of filter elements used in aviation and aerospace hydraulic fluid systems. It can be applied when evaluating the overall characteristics of a filter element according to ISO 14085-1, or separately.

Since the filtration efficiency of a filter element can change during its service life as it is clogging, this test method specifies its continuous measurement by using on-line particle counters with continuous injection of test contaminant and recirculation of particles not retained by the test filter element until the differential pressure across the element reaches a given final or “terminal” value.

This document allows the efficiency to be measured under both steady or cyclic flow conditions. It is also applicable to measuring the stabilized contamination levels that are produced by the filter element while testing with cyclic flow.

This document is not applicable to qualifying a filter element under replicate conditions of service; this can only be done by a specific test protocol developed for the purpose, including actual conditions of use, e.g. the operating fluid or contamination.

The test data resulting from application of this document can be used to compare the performance of aerospace hydraulic filter elements.

标准预览图