Horizontal axial-suction sectional multistage high-pressure centrifugal pump

Abstract

The invention discloses a horizontal axial-suction sectional multistage high-pressure centrifugal pump, comprising a shell body component, a rotor component, a bearing component, and a sealing cover, wherein the shell body component consists of a suction segment shell body, a middle section shell body and a discharging section shell body which are connected in sequence; the rotor component comprises a first stage impeller, a second stage impeller, a guide vane and a rotation shaft; a sliding bearing (5) and a sealing ring (44) of the first stage impeller are arranged at the position of the first stage impeller (6), or the sliding bearing (5) and a shaft sleeve (43) are arranged at the position of a first stage guide vane (42); a balancing drum (18) is arranged on the rotation shaft (25) and in the discharging section shell body (15); the periphery of the balancing drum is provided with a balancing sleeve (16) and a balancing sleeve pressing plate (17), and gaps exist between the balancing drum and the balancing sleeve as well as between the balancing drum and the balancing sleeve pressing plate. In the invention, the high-pressure centrifugal pump can be achieved balanced and good rotation, the reliability and the balance of the high-pressure pump during the running can be enhanced, the high-pressure centrifugal pump has the advantages of compact structure, simple and easy installation, and convenient maintenance, and is particularly suitable for the reverse osmosis sea water desalinization system.

Description

technical field [0001] The invention relates to a pump product, in particular to a segmental multistage high-pressure centrifugal pump applied to reverse osmosis seawater desalination systems and industrial power plant water supply. Background technique [0002] The application of reverse osmosis as one of the mainstream seawater desalination methods in the world today accounts for an increasing proportion in seawater desalination projects, especially in my country, where the proportion of reverse osmosis is more than 80%. Among them, osmotic membrane, high-pressure pump and energy recovery device are the three core technologies of reverse osmosis seawater desalination. As one of the three core technologies, the high-pressure pump provides a pressure of more than 6-12MPa for the seawater permeable membrane. At present, the flow rate of the reverse osmosis seawater desalination high-pressure pump that processes 10,000 tons of seawater per day is 210-420m 3 / h, head is 550~7...

AI Technical Summary

Problems solved by technology

[0003] At present, both ends of the segmental multi-stage high-pressure centrifugal pump are equipped with oil bearing components, and there are two sets of shaft seal mechanisms at both ends. The pump is relatively long. It uses a single balance plate to balance the axial force, and the pump operation reliability is poor.

Images