Use horizontal fire pump points

Select the main points of the horizontal fire pump to understand the performance parameters, structure, use, etc., the following selection of its main points are introduced below: The main points of the selection of horizontal fire pump 1 Fire pump performance parameters (1) ordinary fire pump conditions 1: 1m deep suction should meet the rated flow (Qn) and rated pressure (Pn) requirements, while the working pressure should not exceed 1.05 times the rated pressure. Working condition 2: When the suction depth is 1m, the flow rate is 1.5 Qn, the working pressure should not be less than 0.65 Pn. The maximum working pressure should not exceed 1.4 Pn. (2) Deep well, submersible fire pump Working condition 1: Meet the rated flow (Qn) and rated pressure (Pn) requirements, while the working pressure should not exceed 1.05 times the rated pressure. Case 2: When the suction depth 0m, the flow rate of 1.5 Qn, working pressure should not be less than 0.65 Pn. Large working pressure shall not exceed 1.4 Pn. 2, the structural requirements, corrosion resistance, mechanical properties, continuous operation and other properties of the test should be In line with GB6245-2006 standard requirements. 3, the pump used by the pump should be identified after the type and type test and meet the relevant standards. The prime mover should be selected by the stereotypes and meet the relevant standards. The engine should have good start-up performance at room temperature, should ensure smooth start within 5s. Lead water within 20s, should be able to fire pump rated conditions. 4, pump impeller rotation flexible, no jamming phenomenon. 5, the designer should be based on the location of the fire pump project in the project, the area and the specific circumstances of fire water supply system selection, determine the type of fire pump. 6, the fire pump flow and pressure should be based on the service buildings (or factory plant, residential area), yard, storage tanks and other fire water and water pressure requirements are determined by calculation. Fire pumps should meet the fire water pressure and flow requirements. Pump flow, lift not less than the required value of the design, nor lower than the performance curve given. 7, the temporary high-pressure fire water supply system fire pump should be prepared for use, or use a prepared. Spare fire pump working capacity should not be less than one of the largest fire pump. Multi-use a backup, should consider more than one fire pump when working in parallel, the impact on system traffic and pressure. 8, select the fire pump, the flow ~ pressure (Q ~ P) characteristic curve should be flat without hump. Conditional when the choice of tangent pump or pump valve (pressure regulator valve) integrated pump unit. Extended reading: Top ten brands of motor China Construction Water Exhibition Pump manufacturers ranked ptc exhibition industry Internet (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Daohui (QQ / WeChat: 2355962924) http://beng.liuti.cn/ (service Hotline: 400-6030-811)