液压驱动隔膜计量泵不上量故障分析

Failure Analysis of the Hydraulic-Driven Diaphragm Metering Pump’s Failure to Deliver Required Flow Rate

摘要

液压驱动隔膜计量泵是化工装置物料精准投加与稳定输送的关键设备，长期连续运行易出现不上量、上量不足故障，直接影响装置平稳运行。本文针对该高频故障系统分析，明确补油阀堵塞、排气阀失效、液压腔积气、隔膜损坏、阀件及管路操作问题等诱因，结合机型特点给出排查处置方案与预防建议，为现场快速排障、减少停机、保障生产稳定提供技术支撑。

Abstract

The hydraulic-driven diaphragm metering pump is a critical piece of equipment for precise material dosing and stable conveying in chemical plants. Prolonged continuous operation often leads to issues such as insufficient or failed dosing, directly affecting the plant’s stable operation. This paper analyzes this frequent failure system, identifies contributing factors—including blockage of the oil replenishment valve, failure of the exhaust valve, air accumulation in the hydraulic chamber, diaphragm damage, and operational issues with valves and pipelines—and proposes troubleshooting solutions and preventive measures tailored to the pump model. These recommendations provide technical support for rapid on-site troubleshooting, reduced downtime, and maintained production stability.

关键词

隔膜 / 液压计量泵 / 不上量 / 故障分析 / 补油阀

Key words

diaphragm / hydraulic metering pump / failure to deliver full capacity / fault analysis / oil make-up valve

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