Novel water turbine generator set

Abstract

The invention discloses a novel water turbine generator set which comprises a volute, the volute is composed of a fixed-diameter straight cylinder section and a variable-diameter spiral section which communicate with each other, a water inlet is formed in one end of the fixed-diameter straight cylinder section, and a water diversion pipe is connected to the water inlet. A water inlet flow stabilizing device is arranged at the end, close to the water diversion pipe, of the fixed-diameter straight cylinder section, and the water inlet flow stabilizing device is a rotary cutting type flow stabilizing device or a fixed straight-through type flow stabilizing device. A ring seat communicating with the variable-diameter spiral section is fixedly arranged at the center of the variable-diameter spiral section, movable guide vanes are arranged on the peripheral side of the ring seat, a main shaft is rotatably arranged at the center of the ring seat, a water wheel is fixedly connected to the bottom of the main shaft, a generator is rotatably connected to the top of the main shaft through a coupling, and the generator is electrically connected with a storage battery pack and a transformer. A water outlet is formed in the bottom of the ring seat and connected with a draft tube. According to the novel water turbine generator set, more uniform turbulent flow and a flatter speed profile can be obtained through the water inlet flow stabilizing device, so that water inlet pulsating pressure and water wheel vibration are reduced, and the service life of a unit is prolonged.

Description

technical field [0001] The invention relates to the technical field of water turbine equipment, in particular to a novel water turbine generating set. Background technique [0002] In hydropower projects, the main mechanical equipment used is the water turbine, and its components are mainly runners, guide vanes, volutes, draft tubes, and water guide control mechanisms. A water turbine is a power device that converts water flow energy into rotating mechanical energy, which drives a generator to rotate to generate electrical energy. The combination of water turbine and generator is called a hydro-generator set, and the hydro-generator set is the core equipment of a hydropower station. [0003] In the prior art, the water in the upstream reservoir is diverted to the water turbine, which drives the turbine runner to rotate and drives the generator to generate electricity. The water that has done work is discharged downstream through the draft tube. The higher the water head a...

AI Technical Summary

Problems solved by technology

However, the impact of the water flow on the turbine generator set is relatively large, causing the vibration of the turbine and affecting the normal operation of the unit

[0007] To sum up, in the prior art, due to the large inertia of the water flow, it is easy to form turbulent flow and generate pulsating pressure, which will cause the vibration of the water turbine, resulting in a large impact on the entire device and easy damage to the equipment

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