Centrifugal pump downtime is mainly caused by the failure of the mechanical seal. Mainly due to the failure of liquid medium, there is a small hard particles, to a very high The speed of sliding surface seal, the end surface scratches and failure. The coaxiality of the transmission parts of the pump is poor. After the pump is turned on, the end surface is wobbled and rubbed once per revolution, and the running track of the moving ring is not in the same heart, causing the end surface to vaporize and overheat and wear. The frequent occurrence of the hydraulic characteristics of the liquid medium causes the pump group to vibrate, resulting in the dislocation of the sealing surface and failure. Liquid medium on the sealing element corrosion, stress concentration, with hard and soft materials, erosion, auxiliary seal ring, ring, concave ring and the liquid medium incompatible, deformation and so on will cause mechanical seal surface damage failure, so its Damage to a comprehensive analysis of the form, identify the root causes, to ensure long-term mechanical seal operation. Static and dynamic ring sealing surface of the leak, the main reasons are: end flatness, roughness does not meet the requirements, or scratches the surface; between the end of the particulate matter, resulting in the same can not be run on both ends; installation is not in place, the way is not correct. Compensation ring ring leakage, mainly due to: gland deformation, uneven pre-tightening; installation is not correct; seal quality does not meet the standards; seal selection wrong. The actual use of the results show that the seal failure of the most parts of the dynamic and static end of the ring, the centrifugal pump seal, static ring end face cracking is a common failure phenomenon, the main reasons are: sealing surface installation clearance is too large, flushing Liquid too late to take away the heat generated by the friction; rinse liquid leak from the gap in the sealing surface, resulting in overheating and damage. Liquid medium vaporization expansion, so that both ends of the expansion by the vaporization and separation, when the two sealing surface force fit, the destruction of the lubricating film resulting in the end surface overheating. Liquid medium lubrication is poor, combined with the operating pressure overload, the two sealing surface tracking rotation is not synchronized. For example, high-speed pump speed of 20445r / min, when there is a sealing surface can not track the hysteresis rotation, instantaneous sealing surface damage caused by high temperature. Seal flushing fluid orifice plate or filter blockage, resulting in insufficient water, the machine seal failure.
Recessed Frame
We diviided the led light according to the using eviiroment. Most of our product is the commercial LED Lighting
Commercial lighting is a term used to describe lighting that is used in commercial spaces, including auto dealerships, distribution centers, churches, factories, offices, and warehouses. Unlike residential lighting, commercial lighting is made to withstand more abuse and has a longer lifespan.
While the focus of residential lighting is often on aesthetics, commercial lighting is task orientated. Commercial lighting systems are designed based on what the application is. For example, in an office-type setting, you may see task lighting, which illuminates specific areas where employees need concentrated light to be able to perform their jobs.
Recessed Frame,Flush Mount Led Ceiling Lights,Frame Recessed Downlight,Recessed Led Downlight Frame
Jiangmen Dilin Lighting High-Tech Co., Ltd. , https://www.jmdilinled.com