pressure gauge trerice ราคา are very important in development, mining and quarrying functions enabling users to take away water, sludge, and slurry. Here, Hrishikesh Kulkarni outlines the principle issues for specifying reliable submersible pumps.
Construction managers and engineers are more and more beneath stress to increase efficiencies across their sites and so they can make big gains by using the right tools for the job, so getting the right specification for a reliable submersible pumps can make all of the difference.
Substance properties What liquid needs pumping? The first consideration is the character of the liquid being pumped as this has a major impression on the type of pump. Important elements to contemplate embrace basic composition, the concentration and size of suspended particles in addition to the liquid’s pH level, temperature, and chemical content. For instance, is it water with fine particles or a much thicker fluid, and how aggressive a media is it?
Fluid Definition Drainage water clear water or water containing small solids corresponding to sand or clay with a solid weight of approximately 10% and particle measurement as a lot as 1.27 cm diameter.
Sludge Viscous mixture of liquids and solids, including gentle moist mud and by-products of industrial or refining processes. Sludge has a strong weight of roughly 40% and particle sizes as a lot as 5.08 cm diameter. Slurry semi-liquid mixtures typically loaded with sediment and fine particles of supplies similar to manure, cement, or coal. Slurry has a stable weight of roughly 70% and particle sizes up to 6.35 cm diameter.
The higher focus of solids is finest dealt with by slurry pumps which are specially designed for handling corrosive and abrasive media. If the liquid is especially aggressive then make certain the pump is strong and designed with safety options corresponding to hardened, clog-free impellers, and wear-resistant. However, if the fluid to deal with incorporates solids with a size beneath 50 mm a sludge pump, similar to Atlas Copco’s WEDA S50, will be higher suited to the job.
Capacity requirements What are the capability requirements? One of crucial efficiency concerns is the circulate requirement, ie how a lot liquid must be moved and how quickly? For example, a pump with a most move fee of 138 m3/h (such as Atlas Copco’s WEDA D50) will remove water from a pool that is 36 m3 in 15 minutes. However, a pump with a circulate price of 350 m3/h (such as the WEDA D80) would empty the pool in just 6 minutes.
For one of the best value and efficiencies, the pump chosen ought to have the ability to deal with the flow requirements with sufficient capacity to deal with fluctuations in water stage as well as versatility to manage the demands of various sites. A pump which is over-specified and can handle a a lot greater flow capacity shall be unnecessarily costly and will not provide probably the most cost-effective resolution. On the opposite hand, a pump that has been under-specified will battle to transport the media and put on out more quickly, leading to a shorter life span.
Elevation distance What is the space and the elevation that the fluid needs to be pumped? Over what height does the fluid need to be pumped and how far does it must travel? This will have an impact on the stress that the pump must ship to ensure it might possibly pump effectively and reliably. The greater the gap the water must be pumped, the more friction is created, which results in stress loss from the pump. Pumps want to overcome gravity resistance in addition to friction losses.
If the suction raise required for dewatering with a floor pump is greater than roughly seven metres, a submersible pump must be considered as an alternative. Designed to be totally submerged, it uses the proximity and stress of the encompassing water to aid fluid motion by way of the hose and due to this fact less energy is required to maneuver the water. When specifying, verify the manufacturer’s revealed pump curve, which reveals head top against flow price, to ensure it covers the required duty level.
Energy source What is your energy source?If mains เกจวัดความดันน้ำ is on the market, an electrical pump will be the best and most efficient alternative in most cases. Electric submersible pump, corresponding to Atlas Copco’s WEDA pumps, are the only, most energy-efficient and most economical approach, offering high energy in mild and compact packages.
If the location is distant and prone to a fluctuating mains supply consider a pump whose motor and starter are geared up with inbuilt electrical protection in opposition to various voltage, section failure and human error.
Conclusion Careful consideration of the liquid being pumped, along with the bodily calls for of the appliance corresponding to flow, elevation and distance the fluid travels imply engineers will have the flexibility to select probably the most acceptable pump for the job and obtain maximum performance. Other elements to think about also embody the energy economy, sturdiness and servicing expense for each pump provided.