Measures to prevent water ingress in explosion-proof control boxes
Water ingress into an explosion-proof control cabinet is mostly caused by heavy rain washing. In humid environments, electrical appliances and pipes will produce a breathing effect due to thermal expansion and contraction. By analyzing the causes of water ingress into the explosion-proof control cabinet, measures to prevent water ingress can be identified.
Some explosion-proof control boxes do not have sealing rings and are prone to water ingress.。Failure of sealing surfaces, fastening bolts, and sealing rings is also a major cause of water leakage.。
1. For horizontal installation of explosion-proof control boxes, the sealing surface should not use recessed bolt holes.。Bolt holes shall be filled with grease or other materials.。preventionLevelPermeateIntoBoltHole。
Applying phosphating paste or anti-rust oil on the flameproof surface can reduce the damage caused by corrosion to the flameproof surface and improve the waterproof performance of the waterproof layer.。
Maintenance of the explosion-proof control box is very strict. To prevent unnecessary maintenance caused by bolt breakage on the enclosure of the explosion-proof control box, through holes should be used as much as possible on the enclosure to reduce threaded holes, facilitating the cleaning of foreign objects and debris.。
The sealing gasket shall be intact and elastic, and should be properly placed during installation. Sealing rings with joints should not be used.。
The tightening of enclosure bolts shall be uniform. Users must strictly follow this during installation, especially when using stainless steel bolts.。Stainless steel bolts are aesthetically pleasing and not prone to rusting, but they have low hardness and are easily deformed, failing to achieve the required torque, resulting in excessive gaps on the flameproof surface and failure to meet explosion-proof performance.。
The above is an introduction to measures for preventing water ingress in explosion-proof control cabinets. For more related information, please visit Hualong explosion-proof at www.hlfbdq.com.
