Composite two-stage multi-channel gas-liquid jet pump

Abstract

The invention relates to a composite two-stage multi-channel gas-liquid jet pump. The composite two-stage multi-channel gas-liquid jet pump comprises a first-stage jet pump body and a second-stage jet pump body, wherein the first-stage jet pump body comprises an inlet section, a first-stage nozzle and a first-stage suction chamber, the big end of the first-stage nozzle is connected with the inlet section, and the small end of the first-stage nozzle is positioned in the first-stage suction chamber; the second-stage jet pump body comprises a second-stage nozzle, a second-stage suction chamber, a throat pipe, a diffusing pipe and an outlet section, the first-stage suction chamber and the second-stage suction chamber are mutually connected, and a clamping groove which is used for clamping the big end of the second-stage nozzle is formed in the connecting position of the inner side walls of the first-stage suction chamber and the second-stage suction chamber; the left and right sides of the throat pipe are respectively connected with the second-stage suction chamber and the small end of the diffusing pipe, and the big end of the diffusing pipe is connected with the outlet section; radial gas inlet pipes are respectively arranged on the sides of the first-stage suction chamber and the second-stage suction chamber; the first-stage nozzle comprises a central tapered nozzle and surrounding nozzles which are circularly and uniformly distributed axially. According to the composite two-stage multi-channel gas-liquid jet pump, by virtue of the composite multi-channel jet of a working chamber, the staged pumping action and the mixing effect of multi-channel gas-liquid fluid are intensified.

Description

technical field [0001] The invention relates to a composite two-stage multi-channel air-liquid jet pump. Background technique [0002] Due to its simple structure, convenient processing, and no moving parts, the jet pump is widely used in water conservancy, electric power, transportation, petrochemical and other fields, and is especially suitable for underwater and dangerous special occasions. However, in the process of use, the efficiency of the jet pump is generally low, often only about 30%, so it is mostly used for the suction and water diversion device of the centrifugal pump, or used in conjunction with other equipment. On the other hand, based on its basic working principle, the jet pump Generally, there is a long throat structure, although it is helpful for the energy transfer and mass transfer process of the fluid, but its large structural size limits the development of jet pumps to a large extent. [0003] At present, researchers have proposed new types of jet pum...

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Problems solved by technology

[0004] In order to overcome the shortcomings of the existing jet pumps, such as poor media delivery and mixing effect and too long axial dimension, the present invention provides a composite jet pump with reasonable structure, which can realize multi-channel fluid mixing and effectively improve the efficiency of gas-liquid delivery. Two-stage multi-channel gas-liquid jet pump

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