With the improvement of people's living standard and energy consumption, energy power system has drawn more and more attention. The large-capacity HVAC drainage and drainage equipment has been widely used in living facilities and recognized by the market. Pipeline electric pump is also one of them. Shielded electric pump from the market has been more than 30 years of history, it is used in the north as a heating alternative to other heating equipment to play a very good effect, by the people. The advantages of shielded electric pump is obvious, it not only low noise, no leakage, stable operation, and long service life, maintenance-free. However, it brings people to enjoy the same time we have to see it there are still some drawbacks: due to the shielded motor, shielding sleeve loss is large, so affect the efficiency of the motor, so there are shortcomings in energy conservation. At present, some of the three manufacturers tackle the energy-saving technologies of shielded electric pumps through long-term exploration, development and application of scientific concepts and do effective and stable tests on energy-saving of electric motors so as to solve the problems of large losses and high efficiency in the shortest time Low-level questions. Furthermore, due to the fact that modern humans attach great importance to resources, environment and sustainable development, a series of requirements have been put forward for such issues as energy saving and environmental protection of cogeneration and central heating, Inside and outside for further scientific improvement, improve and completely solve the problem of excessive energy consumption. Shanghai Huang Can Co., Ltd. G system pipeline shielded pump, in the design and development of innovative energy-saving aspects, and how to control product quality has the following characteristics, may give some reference to peers. 1, the pressure parts in the assembly before, must be strictly through the water (gas) pressure test, such as bearings, pump body, the base are playing 1.5MPA / 3MIN without leakage, after passing the test to continue Road process installation. Especially the base, because the base processing, not for parts of the hydraulic test, hydraulic assembly test after a short period of time is difficult to find problems, therefore, after long-term use of the pump, found that the screw seat slightly Stomata lead to micro-leakage, such as the problem, we do a hydraulic test in a single part will be found, will not flow into the next process. 2, the balance of the impeller The vibration and noise of the pump is very crucial, and some enterprises only balance the impeller, in order to improve product quality, we take more positive balance of the impeller. The unbalanced single-sided weight tolerance must be controlled at 2 grams or less, so as to ensure that the impeller balance rotation, but also reduces the impeller due to imbalance caused by vibration, while reducing noise, reducing radial force, extending the bearing Service life. In addition, the imbalance of the impeller to heavy, we use a smooth transition of the impeller surface turning to weight removal, the purpose is to reduce the vortex, reduce hydraulic losses and improve water efficiency. 3, we not only consider the internal quality of shielded electric pump, but also for the external structure of the pump has been improved, the original installation of electric pump at the bottom of the through-hole is circular, so cement stool mounting holes for the time to play slightly Deviations, the screw is difficult to align through-hole. This has brought inconvenience to the installation, we have improved this, with a half circle instead of circular, so there is left and right clearance, no worries to install it. 4, pump medium temperature less than or equal to 95 degrees, the motor winding with H-class magnet wire, it can guarantee a high temperature of 220 degrees. 5, Due to low electromagnetic loss of cold-rolled silicon steel sheet, high efficiency motor and low electromagnetic noise, so we use cold-rolled silicon steel sheet for stator and rotor iron core. 6, Graphite bearing is the main part of the silent pump design, but also control the heart of the rotating part of the bearing is related to the quality and reliability of the use of pump life. The graphite bearing we choose is epoxy-impregnated M104H type, which is proved by practice. The hardness of graphite bearing is hard and wear resistance is strong. 7, we use the rotor for the correction of dynamic balance, under strict process control, we rotor unbalance weight tolerance controlled at 1.5 grams or less in order to ensure that the pump balance and reduce the amount of bearing wear and tear to extend the service life of the pump . 8, there must be a high-quality inspection team, for finishing the size of each channel, only the mouth of the dimensional tolerances and shape and position tolerance are strictly checked and controlled within the allowable tolerance to self-test, the first inspection, a The entire inspection system to test norms to ensure that the pump assembly concentricity, verticality, low noise and other installation requirements to ensure the quality of the product installation. 9, in order to prevent the corrosion of the impeller, we are on the surface of the impeller loop are plated at the surface treatment, the impeller in the long run, always maintain a good working condition. 10, we have a complete set of pump performance testing equipment, pump factory before the performance test for each have to test for the product will not be shipped out of the factory, which is responsible for the majority of users, but also our corporate reputation Be responsible for. Adopted a system of shielded pump technology strictly and scientifically to control and check, shielded pump in use when the safety, durability and reliability have been fully guaranteed, and further enhance its use life.