一、概述在高温高压下工作的机件,如汽轮机的汽缸及阀门管道等,为保证工作的安全可靠,都必须经过严格的水压试验。一般作水压试验用的工具,最常用的是手揿活塞式水泵,也有用电动的离心泵或活塞泵,但都存在着一定缺点。手揿式的水泵如果在泵高压时(例如350公斤/平方厘米),劳动强度很高,需要几个工人轮流操作,容易疲劳;而且手揿的速度慢,流量小。用电动的水泵虽可避免上述缺点,但因系电动机带动,又接近水源,而且受到被水压试验的机件放水时的飞溅,很容 First, an overview of work in the high temperature and pressure parts, such as steam turbine cylinder and valve pipes, etc., in order to ensure the safety and reliability of work, must undergo a rigorous water pressure test. Generally used for hydrostatic test tools, the most commonly used hand pump piston pump, but also useful electric centrifugal pump or piston pump, but there are some shortcomings. Hand pump type pump if the pump pressure (such as 350 kg / cm2), labor-intensive, requiring several workers take turns operating, fatigue; and the hand of the slow, small flow. Although the use of electric pumps to avoid the above shortcomings, but because the Department of motor-driven, but also close to the water, but also by the hydrostatic test parts when the splash of water is very tolerant