关于阀门英语翻译？ 大哥： it's very simple. both are methods to lock valves in the open position, but achieved with different devices. the name 'car seal' derives from a device originally used on railway cars to seal the car shut (if it was carrying cargo) to give evidence of tampering with the contents and these are still used on road going cargo trucks and shipping containers today, especially when they pass through customs. end of history lesson.... the car seal is a cable with a head on it. usually a block of aluminum or steel. where valves are concerned, the cable wraps around the handle or wheel, then around some other part of the valve or adjacent steel/pipe work. the cable is passed into the seal head. a screw with a break-off head tightens on the cable until the head shears off. this is now sealed. (there are other types on the market that don't use a shear of screw). in the case of lock open, this can be achieved with a lockout device or valve interlock. the lockout device can be used in isolation on a single valve, secured in place with a padlock. the interlock will probably be used within a system of additional valves to not only lock the valve, but facilitate sequential operation of several valves. 这应该明白了。查看更多
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