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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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Net Positive Suction Head for Centrifugal Pumps - NPSH ...
Net Positive Suction Head for Centrifugal Pumps - NPSH ...

add the static head and pressure over the liquid and subtract the suction line friction and vapor pressure at the pump The important thing to remember in these calculations is that the method of calculating NPSHA and the formula used are always the same.

Pumps & Systems - January 2017
Pumps & Systems - January 2017

Equation 1. Where (all values are absolute): H1 = absolute pressure in feet H2 = fluid’s vapor pressure converted to feet H3 = static height of the fluid column above the pump impeller centerline. This component has a negative value if the fluid …

Fundamentals of Fluid Pumping - Process Phase
Fundamentals of Fluid Pumping - Process Phase

For a liquid at ,suction, of a pump if there is a head reduction equal to NPSH value, cavitation occurs causing the formation of bubbles. In other words, the static pressure of the ,suction, liquid shall be always greater than its vapor pressure. NPSH main usage is to prevent cavitation at the inlet of the pump.

Combined Sand Pumps - Submersible Slurry Pump Booster …
Combined Sand Pumps - Submersible Slurry Pump Booster …

Selection Process of ,Combined Sand Pumps,. Through the ,sand, source analysis and ,calculation,, the engineers of Ocean Pump concluded that: Under the premise of 120 cubic meters of mixed flow per hour, the pressure of 2000 meters pipelines was 4.93 bar, the head was 49.29m.

dRedGING PUMPS
dRedGING PUMPS

These ,sand suction, head is designed specifi cally for ,sand, mining in an area where a lot of dirt on the bottom. All the rubbish cannot stay on the ,suction, head because through the ,suction, head is blowing the yet nozzles. 22 deVelOPMeNT RUBBISh ,SaNd SUCTION, head

Alternative Design of Double-Suction Centrifugal Pump to ...
Alternative Design of Double-Suction Centrifugal Pump to ...

Double-,suction, centrifugal ,pumps, are generally designed for clear water, but the Yellow River contains a high amount of silt particles. When operating in ,sand,-laden water, the pump impeller is usually eroded severely by silt, which leads to a decrease in pump performance and an increase in maintenance costs and downtime, and affects the operating stability of the pump.

CALCULATION OF BOWL HEAD OR DISCHARGE HEAD
CALCULATION OF BOWL HEAD OR DISCHARGE HEAD

CALCULATION OF BOWL HEAD OR DISCHARGE HEAD, For vertical turbine ,pumps,, discharge head equals bowl head minus lift and internal pump loss. It can be shown as: hD = hB - hL - hP ... 692 ,Sand, Collar 1109 Bronze 688 ,Suction, Bell 1003 Cast Iron 690 ,Suction, Bearing 1109 Bronze

Recommended Pump Suction and Discharge Side Velocities ...
Recommended Pump Suction and Discharge Side Velocities ...

A simple means of determining suction and discharge velocities is to look at the operating point on the pump curve. Take the pump inlet diameter and the do the pipeline velocity calculation based on flow and line size. Then repeat for the diameter of the discharge size.

Chapter 16 Design of Pumping Stations - Home | Food and ...
Chapter 16 Design of Pumping Stations - Home | Food and ...

The size of the pump well should be ten times the water discharge/min. A pump well of bigger size may promote swirling of water. The difference between the lowest possible water level in the pump well and the inlet part of the suction pipe, can be calculated as follows:

CPT-Based Method for the Installation of Suction Caissons ...
CPT-Based Method for the Installation of Suction Caissons ...

A CPT-based method is presented for estimating the self-weight penetration and ,suction, required during ,the installation of suction caissons in, medium dense to dense ,sand,.

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