How to buy horizontal centrifugal pump? Horizontal centrifugal pump purchase tips

【Centrifugal Pump News】 Horizontal Centrifugal Pump has the advantages of simple structure, easy maintenance, no vibration during fixed installation, good sealing, low noise, convenient maintenance and low price. So, how to buy a high quality horizontal centrifugal pump products? Today Xiaobian revealed horizontal centrifugal pump for you to buy tips, I hope for your help. Rational selection of pumps requires comprehensive consideration of technical and economic indicators such as pump unit, pump station investment and operating costs to make them in line with economic, safety and applicable principles. Specifically include the following aspects: 1), should choose high efficiency, low noise, energy-saving pumps, non-selection of products to be eliminated. 2), should be based on the design flow, the required lift election pump, and consider the pump due to wear and tear caused by decreased pump output, according to the calculated head H multiplied by 1.05 to 1.10 coefficient after the pump; should choose the characteristic curve with the flow rate increased The pump with its head descend gradually, so the pump works stably and is reliable when working in parallel; and the operation point of the pump should be kept in an efficient range operation, which saves energy and is not easy to damage the machine parts. How to buy horizontal centrifugal pump? Horizontal centrifugal pump purchase tips 3), when the water supply network without adjustment facilities, should be used speed pump group or rated speed pump group marshalling run water supply. The maximum output of the pump group should not be less than the design of district water flow, and should check the fire conditions. 4), select the tank, water tower lift pump should minimize the number of pumps, should be a use of a prepared; when a single pump to meet the requirements, it is not appropriate to use more than one parallel mode; if you must use more than one parallel operation or size pump Mode, its model, the number of units should not be too much, the model should not be more than two in general, the pump lift range should be similar; parallel operation of each pump should still be operating within the high efficiency area. 5), variable frequency speed pump (group) design water flow should ensure that the life of the water supply system to meet the maximum design of the second flow requirements. The power supply should be reliable (dual power supply or dual-loop power supply); pump operating point should be selected in the pump performance curve (QH curve) of the efficient work area, and should not be selected in the QH curve extension line, the design of the most unfavorable operating point should At the right end of the high-efficiency section of the pump's characteristic curve, the point at which the pump has the largest amount of water and the low lift but meets the requirements, is the intersection of the low point of the high-efficiency section of the pump's characteristic curve with the pipe's characteristic curve. Pump speed range of work can be as efficient as possible within the pump; speed range should be set at 25% to 100% of the pump water supply; equipment should have automatic water level control. 6), life pressurized water supply pump unit should be set up a spare pump, spare pump water supply capacity should be greater than the maximum capacity of a running water pump, the pump should automatically switch, alternating operation. 7) The voltage of the pump with the motor should be the same, and the power system should be the same as the national grid power supply system. Further reading: Pump and Valve Tube & Pipe Fittings Exhibition Information 2016 Exhibition Information Industrial Internet (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: Li Juan (QQ / WeChat :) (Service Hotline:)