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近年来，我队在计划外的盐井施工中，配备了水泵压力表。然而据不完全统计，每个水泵压力表不到2个月就被卤水腐蚀而失灵。为此，笔者设计加工了一批水泵压力表保护接头，即在保护接头内设计一个油活塞，通过注机油使压力表和卤水隔离，保护压力表。经我队4台钻机在盐井施工中近9个月的连续试验，压力表均保护完好。取得了较好的经济效益，深受机台的欢迎。保护接头详见附图。
In recent years, our team has equipped with pump pressure gauges in the construction of unscheduled salt wells. However, according to incomplete statistics, each pump pressure gauge was corroded by brine and failed within 2 months. For this reason, the author designed and processed a batch of pump pressure gauge protection joints, that is, an oil piston is designed inside the protection joint, and the pressure gauge and brine are isolated by the injection of oil to protect the pressure gauge. After nearly 9 months of continuous testing in salt well construction by our team’s 4 rigs, the pressure gauges are well protected. It has achieved good economic benefits and is welcomed by the machine. Protection joints are detailed in the attached drawings.