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What Are The Shortcomings Of The Water Medium Hydraulic Coupler In Use?
Oct 27, 2017

Water medium hydraulic coupler in the use of the shortcomings:

① water medium temperature increases after the easy vaporization, water vapor accumulation and more easy to make the coupling chamber boost, if not released will cause an explosion, so the water medium fluid coupling in addition to a fused plug safety device Also set up an explosive plug.

② water medium hydraulic coupling with a sealed device inside the bearing outside the structure, because the water vapor is difficult to be sealed, so often erosion bearings, so that corrosion corrosion bearing life to reduce life.

③ In order to prevent the hydraulic coupling in the internal vapor pressure when the explosion, the coupling shell to do a thick, requires to withstand 3.4MPa pressure without burst, so compared with the oil coupling device is not only used more material, and shell The difficulty of casting the body also increased.

④ water medium coupling failure rate is relatively high life expectancy, MT208 scraper conveyor with hydraulic coupling standard reliability indicators of hydraulic coupling in the underground operation of the average trouble free working time shall not be less than 2000h, the actual On this indicator is also difficult to achieve.

⑤ cavity parts need to do anti-corrosion treatment, increase costs.

       Due to water medium hydraulic coupler working chamber of the water medium after heat easily vaporized, so that the cavity pressure, if not released in time will cause the shell explosion, so the water medium fluid coupling not only set the fusible plug, Also set up an explosive plug safety protection device.