Mercury slip ring applications and deficiencies

As the name implies , mercury slip rings, is the use of mercury as a conductive medium, the slip ring assembly . Mercury is the only state at room temperature, liquid metal , precisely because of this feature, as well as metallic conductivity. Just let this idea become a reality. Is to mercury sealed within the slip ring , the fixed end and the rotating end integrated, rotating it directly through the conductive transfer of mercury to the current , the transmitted high accuracy, good stability, no noise in the transmission signal .

  Compared to other slip ring , since the medium is a fluid , creating a compact structure , small size features, this feature, tiny precision instruments in the field of special primary role of non- mercury slip ring perfectly. Because of the characteristics of mercury , when rotating slip ring wear , longer life expectancy than the average many times , in the need for frequent rotation conductive rotary joint , which is very appropriate. Since rotating parts without complicated mechanical structure makes the product more reliable and maintenance-free, no noise , no noise , high speed , low price signal is not distorted, contact resistance, pass more current .
Mercury slip ring wide range of applications ! From traditional industries to new industries , from the civilian sector to the military industries have to use mercury slip ring . Mercury as a material we all know , is a good conductor , compared with other materials such as copper , its conductivity is not bad, because mercury is liquid mercury as the medium of an electrical rotary joint , the main principle is the use of liquid mercury at room temperature while maintaining , and mercury can be conductive, and the resistance is small , the shape can be freely changed, so , and copper and other materials than on some occasions , more applicable , it can be said slip ring can be applied traditional occasions , mercury slip ring can be competent, but because mercury is highly toxic , and more expensive, so the market price to be higher than the slip ring a large portion of the mercury slip rings are generally used in relatively high-end devices ( such as a hospital CT) is more appropriate . Superconducting experimental use of mercury in there to achieve the conductivity of weak signal transmission, numbers and control current is very appropriate, more suitable for conventional slip ring incapable of areas, such as high- speed, low impedance, low interference and other occasions. Which applications are: automated packaging packaging machinery, packaging machinery hand , robots and other automated packaging .
Mercury slip ring advantages:Therefore, in its interior is not as complex as the mechanical slip ring structure . Volume ratio on the mechanical slip ring is much smaller , and this is one of its major strengths . When the rotation is mainly mercury internal molecular friction , and the friction between the seals , so that the mercury slip ring wear is very small , so its very long life , high speed , and without maintenance.

Mercury slip ring its shortcomings :
Since the thermal expansion coefficient of mercury , the mercury slip ring is not used at high temperatures , generally working temperature should not exceed 60 ° C , followed by its high precision mechanical sealing structure , one to let expensive, on the other hand to the working environment requirements efficiency, vibration environment must be shockproof , otherwise it will seriously affect the life.