Liquid Ring Vacuum Pump for Electric Power Industry
The basic principles for the development of power industry are to improve energy efficiency, protect the ecological environment, develop hydropower in an orderly manner, optimize the development of coal-fired power, actively promote nuclear power, moderately develop natural gas power generation, encourage new energy power generation, and drive the technological progress of equipment industry.
China will also install at least 130 million kilowatts, including 40 million kilowatts for hydropower, 60 million kilowatts for thermal power, 70 million kilowatts for nuclear power and 30 million kilowatts for other installations. Over 500 key projects with a total investment of 3 trillion yuan were invested in this period. There are 207 thermal power projects, 132 hydropower projects, 8 nuclear power projects, 82 wind power projects and 21 biomass power generation projects. Therefore, the market of electric power pumps will be vast in the next few years.
Of course, the liquid ring vacuum pump thinks that the key requirement of electric power pumps is to adopt energy-saving, efficient and environmentally friendly pipeline booster pumps, especially to develop nuclear main pump, charging pump, reactor cooling pump, high-pressure safe water injection pump, boric acid pump, nuclear first, second and third-stage pumps, supercritical and ultra-supercritical thermal power unit pumps, boiler feed water pump, pre-pump, circulating pump, condensation pump and water ring. Vacuum pumps, centrifugal ash removal pumps, reciprocating ash removal pumps, couplings, metering pumps, pumps for refrigeration units, flue gas desulfurization devices and other pump products.
The liquid ring vacuum pump belongs to vane type machinery. The energy conversion is realized by the rotation of impeller. The power consumption is mainly to make the water ring obtain the kinetic energy of compressed gas. In the suction stage, the impeller transforms the mechanical energy obtained from the driving machine into the kinetic energy of the water ring which rotates close to the inner wall of the pump to form the suction chamber to suck the gas in. The energy conversion in the suction stage is similar to that in the centrifugal pump, and the shaft power is proportional to the third power of the rotational speed. In the exhaust stage, the kinetic energy obtained by the water ring is transformed into the kinetic energy of impeller rotation and the pressure energy of compressed gas. The working principle of the exhaust stage is similar to that of the turbine. Considering comprehensively, it is considered that for a certain size of pump, the relationship between shaft power and rotational speed is approximately quadratic.