Chaoyang District, Beijing fan service, fan installation motor repair, pump repair

Beijing YuanHui electromechanical repairs and replacement, Ltd. is a professional to provide you with motor, pump sales, maintenance, technical advice and maintenance business, the company has a strong maintenance team can undertake major enterprises regular repair and maintenance of equipment and mechanical outsourcing services. Since its establishment, adhere to the "customer first, the credibility of the first customers first" service concept. And the quality of its innovative technology, strong, fast cycle, and thoughtful service. The majority of customers. The company has a dozen professional pump maintenance technicians, he worked in Beijing each regional solutions in large-scale imports of motor repair by the local customers, establish long-term cooperative relationship. Years of work experience in the company are: fast, efficient and thoughtful, high quality service is the basis of survival. To this end the company has launched a series of intimate services, we will do our best to make you save more energy, time and money. By making our services more perfect. The company has advanced detection equipment and professional engineers, have the ability to complete the Party to temporary, sudden work; consistently adhering to safety, quality, efficient service concept, "quality assurance, customer satisfaction," as the eternal pursuit and solemn commitment, the company is willing to advanced technology, excellent equipment, scientific management and dedication to providing our customers save time, effort, money, safe, fast and convenient services. I would like to create in your trust and strong support for a better tomorrow! 24-hour on-site service. Company Business: 1, all kinds of imported and domestic professional repair motors, generators, welding machines, inverters, transformers and other electrical equipment; 2, professional repair all kinds of imported and domestic pumps include: the United States, Germany, Britain, Austria, Italy, the Netherlands, Denmark and other countries pump including pumps transformation 3, specializing in design and installation of water pumps, water pump alteration, transformation pipeline, pump maintenance, overhaul, big insurance, including all manufacturers of pumps 4 national production, professional fight floods deep well pump, cleaning deep wells, deep wells repair 5, professional design and installation of a variety of inverter, frequency counters, power distribution cabinets, distribution boxes 6, sales: import and domestic all kinds of pumps, motors, welding machines, generators, fans, cable , tube wells, power tools, accessories (GB and non-GB members) Our services: 1, the first time arrived at the scene 2, free onsite service 3, check, and then offer, after the repair 3, good service, not any charge flow is the amount of liquid flow Q (volume or mass) pumped out in a unit time. Volume flow with Q, the unit is: m3 / s, m3 / h, l / s and the like. Mass flow with Qm, the unit is: t / h, kg / s and the like. Relationship between mass flow and volume flow is: Qm = density ρQ where ρ-- liquid (kg / m3, t / m3), room temperature water ρ = 1000kg / m3. Head H lift the water pump pumping unit weight of the liquid from the pump inlet (pump suction flange) to pump outlet (pump outlet flange) energy value. That is a Newtonian fluid through the pump to obtain the effective energy. The unit is N · m / N = m, i.e., the height of the liquid pumped liquid column, referred to as habit meters. N is the number of revolutions of the rotational speed of the pump shaft rotational speed per unit time, represented by the symbol n, the unit is r / min. NPSH NPSH NPSH, also known as net positive suction head, is a major parameter cavitation performance. NPSH There have been represented by Δh. Power and efficiency of pump power usually refers to the input power, that is the prime mover shaft power on the mass support, it is also known shaft power, with P said; pumps, also known as the effective power output, with Pe represents. It is an effective energy delivery from the pump unit time pump out the liquid obtained. Effective energy because the pump head means the effective energy output per unit weight of the liquid obtained from the pump, so that the head and the mass flow rate and the acceleration of gravity, is the output of liquid per unit time obtained from the pump - the pump The effective power