A kind of reel sprinkler irrigation machine oblique impact type water turbine

Abstract

The invention belongs to the field of water turbines, and relates to a reel-type sprinkling irrigation machine oblique strike type water turbine, comprising an inlet pipe, a turbine housing, a turbine cover, a runner, a drive shaft and an outlet pipe; the runner blades are cylindrical, and the The inlet placement angle α of the above-mentioned blade is 45°, and the outlet placement angle β is 21°, which can reduce the impact loss of the inlet jet flow and the outlet flow velocity, reduce the energy of the outflow, and make the energy can be utilized to the maximum. The efficiency of the cylindrical blade is compared with the vertical The blades are significantly improved, compared with the existing water turbine blades, the number of blades is reduced, saving manufacturing costs; the angle between the centerline of the inlet pipe and the turbine cover is 22.5°, so that the energy of impacting the blades can be maximized, and the mechanical efficiency is improved. ; The inlet pipe and the outlet pipe are all conical structures, which can better promote pressure flow and reduce hydraulic loss. In the future, the potential energy of the flow will be converted into jet kinetic energy, so that the jet has sufficient speed to impact the blades to do work. The conical shape of the outlet pipe The design can recover the residual energy of the water outlet.

Description

technical field [0001] The invention belongs to the field of water turbines, and in particular relates to an oblique strike water turbine for a reel type sprinkler irrigation machine. Background technique [0002] Since the reel sprinkler irrigation machine was introduced into my country in the 1970s, it has been widely used in my country because of its compact structure, convenient transportation, simple operation, good irrigation effect and high degree of intelligence. It is the main crop production area in northern my country. One of the sprinkler irrigation models. The driving device of the reel sprinkler irrigation machine mainly includes hydraulic drive type and motor drive type. Among them, the hydraulic drive type is still a hot spot in the application and research and development of foreign reel sprinkler irrigation machines because of its energy recovery, high reliability and long service life. As the core component of the driving device of the reel sprinkler irri...

AI Technical Summary

Problems solved by technology

In 2014, Niu Guoping and others invented a utility model patent "a water turbine for a small-flow reel sprinkler irrigation machine", the patent number is CN103573539A, which discloses a water turbine for a reel-type sprinkler irrigation machine suitable for small flow rates. The main description The structure of the turbine shell and the runner are improved. By designing the taper of the inlet and outlet nozzles and the curvature of the blades, the efficiency of the nozzle and the runner are improved. However, the water turbine is only suitable for small flow conditions and is suitable for small reel sprinklers. It is not suitable for large and medium-sized reel sprinklers, and cannot provide the power torque required by large and medium-sized reel sprinklers

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