Application of submersible pump
A pump is a machine that pumps a liquid or a liquid. It transfers the mechanical energy or other external energy of the prime mover to the liquid, which increases the energy of the liquid. Pumps are mainly used to transport liquid, including water, oil, acid and alkali liquid, emulsion, suspension emulsion and liquid metal, etc., but also can transport liquid, gas mixture and liquid containing suspended solids.
Pumps are generally based on the working principle of the volume type pump, power pump and other types of pumps, such as jet pump, water hammer pump, electromagnetic pump, gas lift pump. Pump according to the working principle of classification, but also by other methods of classification and nomenclature. For example, according to the driving method can be divided into the electric pump and the turbine pump; according to the structure can be divided into single - stage pumps and multi-stage pump; according to use can be divided into the boiler feed pump and the metering pump; may divided into the pump, the oil pump and the mud pump according to the transportation properties of the liquid.
Volume type pump is to rely on the working components in the pump cylinder for reciprocating or rotary motion, so that the volume of work alternately increased and reduced, in order to achieve the liquid suction and discharge. Working components for reciprocating movement of the volume of the pump called the reciprocating pump, as a rotary motion called the rotary pump. The former inhalation and discharge process in the same pump cylinder alternately to, and controlled by the suction valve and discharge valve; the latter is through the rotation of the gear, screw, lobed rotor or slip sheet work element, forcing the liquid from the suction side to the discharge side.
Volumetric pump in a certain speed or the number of under reciprocating flow is certain, almost does not change with the stress; reciprocating pump flow and pressure have greater ripple and need to take the pulse of the corresponding mitigation measures; rotary pump generally no pulsation or only small pulsating with self absorption capacity, pump start to pumping pipe of the air suction liquid; start the pump must be discharged pipe valve is fully open; reciprocating pump applicable to high pressure and small flow; rotary pump used in small flow and high pressure; reciprocating pump is suitable for conveying clean liquid or gas-liquid mixture. Generally speaking, the efficiency of the volume pump is higher than that of the power pump.
The power type pump by the rapid rotation of the impeller on the liquid force, mechanical energy transmitted to the liquid, so as to increase the kinetic energy and pressure energy, and then through the pump cylinder, most of the energy conversion into pressure energy to achieve the transmission. Power type pump, also known as vane pump or vane pump. Centrifugal pump is the most common type of power pump.
The lift of pump power at a certain speed has a limit, head changes the flow; stability, continuous conveyor, flow and pressure no pulsation; usually there is no self absorption capacity and need to pump first fill full of liquid or will pipeline pumping into a vacuum in order to begin work, applicable to a wide range of performance, suitable for conveying clean fluid viscosity is very small, the special design of the pump can be conveying slurry, sewage and waste water or water lost solids. Powered pumps are mainly used for water supply, drainage, irrigation, process fluid transport, power station storage, hydraulic transmission and the ship's jet propulsion, etc..
Other types of pumps are a class of pumps that deliver energy in another way.
