Yancheng Qingquan Pump Industry Co., Ltd.
Contact: Jin Qiang
Address: No. 2, Building 10, Area B, No. 96 Huanghai East Road (Dayang Industrial Park), Tinghu District, Yancheng City
Axial flow pump centrifugal impeller is equipped with 2 to 7 leaves and rotates in a round steel pipe-shaped pump body. The pump body at the upper end of the centrifugal impeller is equipped with fixed guide vanes, which are used to remove the liquid fitness exercise for turning it into a radial fitness exercise, and change the mechanical energy of the rotational fitness exercise into working pressure energy. Axial flow pumps are generally unipolar, and very few are bipolar. The total flow range is quite large, ranging from 190 to 410,000 cubic meters per hour; the pump head is usually below 30 meters. Axial-flow pumps are usually upright, and the centrifugal impeller is immersed in the water. It is also a vertical or side axial-flow pump. Axial flow pump manufacturers The installation of centrifugal impellers of small and medium-sized axial flow pumps above the river surface must be started by using a mechanical pump exhaust pipe. The axial flow pump has two types of structure: movable and adjustable. The application load (the key is the total flow) of large and medium-sized axial flow pumps often needs to be changed greatly during operation. Adjusting the installation angle of the leaves allows the pump to maintain high efficiency operation under different loads. The leaf mounting angle of small and medium pumps is usually fixed. Axial flow pumps belong to the type with the highest specific speed among driving force pumps, and the specific speed is 600 ~ 1800. The pump's total flow-pump head, total flow-shaft power characteristic curves are steeper in the small total flow area, so you should prevent you from operating in an unstable small total flow area. The axial power of the axial flow pump is large at zero total flow, so the pump must open the valve on the pipeline before starting to reduce the starting output power. Axial flow pumps are mainly used in places with low pump heads and large total flow, such as irrigation, drainage, dock drainage pipes, water level adjustment of the Grand Canal Lock, or as large and medium-sized circulating pumps in power plants. Axial-flow pumps with higher pump heads (bipolar if necessary) can be used for the propulsion of shallow water vessels.
Axial flow pump is a kind of vane pump. Its leaf module is a series of airfoil, and it forms a cylindrical cascade tightly around the rim. Because the traces of the hydrodynamic micelles passing through the centrifugal impeller are theoretically located on a cylindrical surface that is on the same boat as the drive shaft, after the guide vanes are racemized, the outflow flows in the radial direction, so this type of pump is called axial flow. Pump, also known as Kaplan pump. The total flow of the axial flow pump is very large, reaching 65M3 / s; the head of the unipolar water pump is low, generally 1-20m. Therefore, the specific speed of the axial flow pump is relatively high, and its common range is between 600 and 1800.
The advantages of axial flow pumps are: ① simple structure, given the main parameters in the work, the cross-sectional area (vertical bisector of the drive shaft) and the net weight are smaller than other types of vane pumps; The operating conditions can be easily changed based on changing the leaf placement angle; ③ Axial-flow pumps are generally all column structures, so they occupy a small area, and the other can be installed outdoors.
The shortcomings of the axial flow pump are: ① Natural aspirating working capacity Co., Ltd .; ② Unipolar pump with low head; ③ High efficiency curve is steep, and the high efficiency zone is narrow. The design scheme has poor rationality when it is under load.