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      Pump performance parameter power station pump

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      Pump performance parameter power station pump

      Release date:2015-06-15 15:34 Source:http://www.biricikmaket.com Views:

      Power station pump mainly flow and lift, in addition to shaft power, speed and necessary cavitation margin. Flow is defined in unit time through the pump outlet output quantity of the liquid, the general use of volume flow; lift conveyor unit weight are liquid from the pump entrance to the export of energy increment, for positive displacement pumps, energy increment is mainly reflected in the pressure will increase, so usually with the increase of pressure instead of head to represent. The efficiency of the pump is not an independent parameter, which can be calculated from other parameters such as flow, head and shaft power.. Conversely, the flow, head and efficiency of the known flow, can also find the shaft power.

      Between the various performance parameters of the pump there are certain interdependent relationship between can through the test of the pump, respectively, measured and calculated parameter values, and draw into a curve that, these curves called characteristic curve of the pump. Each pump has a specific characteristic curve, provided by the pump manufacturer. The performance section of the recommended performance section, commonly referred to in the plant, is also indicated, called the working range of the pump.

      The actual working point of the pump is determined by the intersection of the curve of the pump and the characteristic curve of the pump.. Selection and use of the pump, the pump should be the work point to the working range, to ensure the operation of the economy and safety. In addition, when the same pump with different liquid viscosity, its characteristic curve will also change. Generally, the characteristic curve of the pump factory is mostly referring to the characteristic curve of the clean cold water.. For power type pump, with the increase of liquid viscosity, lift and efficiency, shaft power increases, so sometimes the viscosity of liquid heating of large liquid will be small, so as to improve the transmission efficiency..

      During the 12th Five year, China's pump and vacuum equipment manufacturing industry will remain about 20% of the market growth rate. By 2015 the size of our sales will reach 158700000000 yuan. In the sewage treatment equipment, the investment of the pump is 15% of the total investment.. If calculated according to the proportion, during the 12th Five Year Plan, the urban sewage treatment field of pump products demand about 600 billion yuan, the next three years and nearly 400 billion market demand. This is very good centrifugal pump industry.

      Pump basic components: motor, coupling, pump head (body) and the base (horizontal).

      The main parameters of the pump are: flow, with Q, said the unit is M3/H, L/S. Head, with H, said the unit is M. For water pumps, the essential cavitation allowance (M) parameter is very important, especially for suction type water supply equipment. For submersible pumps, the rated current parameter (A) is very important, especially for the frequency conversion water supply equipment. Power station pump


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      日本免费av一区二区三区

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