JPS5937275A - Vacuum multiplying system vertical shaft cylindrical type water turbine - Google Patents

Abstract

PURPOSE:To permit to increase the output of kinetic blades by a method wherein the kinetic blades are rotated by speed energy generated by nozzles and pressure energy near the discharging port of the turbine. CONSTITUTION:The flow of water, introduced from an inflow port 12, acts on the vanes 13 of the kinetic blades 8 as the jet stream of high-velocity through nozzles 6 arranged vertically and narrowed by bending guide vanes 5 to rotate the kinetic blades by the impact force thereof, while the lower discharging port 14 of the kinetic blades 8 are narrowed, therefore, a pressure is generated and the pressure energy acts on the vanes 13, thus, the kinetic blades 8 are rotated by the reaction force thereof. These actions act on respective guide vanes and the kinetic blades to increase the output.

Description

[Detailed description of the invention] The present invention relates to a water turbine for low head hydroelectric power generation.

Conventional water turbines have a single runner in a penstock pipeline, and the effect of converting the potential energy or pressure energy of water into kinetic energy is small, and the performance is particularly poor at low heads.

The water turbine of this invention was developed for use with low head, and the height of the water turbine can be effectively utilized, resulting in excellent surface partial load characteristics and high speed rotation of the rotor blades.

That is, there is a conical lid part 1 on the upper part of the chamber-shaft type water turbine, and connected to it, the outside is surrounded by a cylindrical body 2, and connected to the lower part of the cylindrical body 2, a vertical suction pipe 6 is installed. Nine throttle valves 4 are installed at the bottom of this suction pipe 6.

There is a nozzle 6 in which a number of fixed upright guide guide vanes 5 are arranged at an appropriate length from the upper part of the inside of the cylindrical body 2, and the lower outlet of the guide guide vanes 5 is narrowed in a curved manner. A horizontal flap valve 7 is attached to the upper and lower intermediate portions of each induction guide vane 5.

A rotor blade 8 is located below the induction guide vane 5. The inlet of the rotor blade 8 is made wide, and the discharge port 14 of the rotor blade 8 is made narrow.

A chamber shaft 9 is installed in the center, and a generator and coupling coupling 10 are installed on the upper part of the chamber shaft 9. Several vertical bearings 11 are installed in appropriate positions on the shaft 9, and the shaft 9 is equipped with a coupling 10 for connecting the generator. Fix the wing 8.

This is a water turbine in which the above-mentioned guiding guide blades 5 and rotor blades 8 are arranged in multiple pairs as a set, and the inside is operated in a vacuum state.

In this work, water introduced from the water inlet 12 attached to the conical lid 1 is arranged vertically by the guide vanes 5 and flows down through the curved and narrowed nozzle 6 to act on the blades 16 of the rotor blades 8 as a high-velocity jet. At the same time, since the lower discharge port 14 in the rotor blade 8 is narrow, pressure is applied to the rotor blade 16, and the pressure energy acts on the blade 16, and the reaction force causes the rotor blade 8 to rotate. .

This operation acts on each guide vane rotor blade in a multiplex manner to increase the output.

By attaching a suction pipe filter connected to the lower part of the cylindrical body 2, the suction vacuum effect is increased and water flow rate change characteristics are improved, allowing high performance work even at a low head.

Efficiency at light loads can be improved by adjusting the handle 17 of the horizontal valve 7 attached to the guide vane 5 and the puller 18 of the round throttle valve 4 attached to the suction pipe B according to changes in the flow rate of the river. possible and has excellent partial load characteristics.

By installing the water turbines of the present invention in several locations in the same penstock in a stepped manner, it is possible to generate power several times or several times as much as the conventional power generation power.

It can operate with high efficiency and generate electricity at low head of a river without requiring a huge reservoir.

[Brief explanation of drawings]

Figure 1 is a partial longitudinal sectional view of a vacuum multiplexed chamber-shaft cylindrical water turbine.
Figure 2 is a partially cutaway plan view at position A in Figure 1. Figure 6 is a partially cutaway plan view at position B in Figure 1. Figure 4 is a partially cutaway plan view at position B in Figure 1.
Cutaway plan view at position C 1 - Conical lid s 2 - Cylindrical body 5 - R groove guide vane 8
- Moving blade 15 - Air prevention device 16 - Bearing 17
-Handle for opening/closing the side valve 18-Handle for adjusting the flow rate

Claims (1)

[Claims] 1. There is a conical lid part (1) on the upper part of the chamber-shaft type water turbine, and the outside is surrounded by a cylindrical body (2) that is connected to the conical lid part (1). A suction pipe (6) is provided, and a round throttle valve (4) is installed at the bottom of this suction pipe (3). A fixed upright guiding guide vane (5) is installed from the top inside the cylinder (2).
), and there is a nozzle (6) in which the lower part of the guide vane (5) is curved and narrowed. A horizontal flap valve (7) is attached to the upper and lower intermediate portions of the induction guide vanes (5). A water turbine is equipped with rotor blades (8) below the induction and guide vanes (5).The rotor blades (8) and the induction and guide vanes (5) are installed multiple times as a set and operate with the inside in a vacuum state. 2. Metal. Vacuum multiplexed vacuum multiplexed vertical circle according to claim 1, in which materials such as synthetic resins and ceramics are used in the right places.