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洛矿所于八○年研制成功国内第一台竖井钻机滚刀高压密封试验台,可以模拟最大深度在一千二百米以内任何井深下的滚刀密封工况。两年多来、通过对我国、西德、美国产十多把滚刀在不同压力下共进行的五千小时运试转验表明:该试验台性能良好,设计、制造是成功的。为我国竖井钻机刀具的密封研究提供了可靠的试验设备,填补了这方面的空白。
In 1990, Lo Mine successfully developed the first high-pressure sealing test bench for vertical shaft drilling hob in China, which can simulate the condition of hob sealing under the maximum depth of 1,200 meters. Over the past two years, a total of more than a dozen hobs produced by our country, West Germany and the United States have been tested under different pressures for 5,000 hours. The test shows that the test bench is of good performance, and the design and manufacture are successful. For our shaft drilling rig seal research provides a reliable test equipment to fill the gaps in this area.