JP2000087838A - Valveless turbine for wave force having air injection port on guide plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve energy efficiency and cope with various wave activated power generation by forming injection ports of air on upper and lower portions of a turbine casing which adopts air compressed by the use of motion of waves as a power source. SOLUTION: A turbine for wave force is arranged on a buoy 4 of a closed structure which is supported in a floated manner on the surface of the sea. A turbine runner 3 is rotated with compressed air generated in the buoy 4 generated by motion of wave as a power source, for generating torque. In such a case, air injection ports 2 also used as suction ports are formed on upper and lower portions of a turbine casing 1. The air pressurized by the buoy 4 is blown from the injection port 2 to a runner 3 with an optimum angle, for rotating the runner 3. The injection ports 2, being formed on the upper and lower portions of the outer casing 1, enables taking-in of air energy in the case of air discharging and negative pressure suction. The energy is utilized for the rotation of the runner 3. The runner 3 is preferably be a turbo cross-flow type.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to a wave force guide plate air which always rotates in a certain direction and realizes a high torque by using compressed air brought by wave force and suction air by negative pressure. The present invention relates to a valveless turbine with an injection port.

2. Description of the Related Art Conventional wave power turbines
Axial turbine, Babinchev impulse turbine, Filippenco impulse turbine, double volute impulse turbine, flap operated by opening and closing two- and four-valve valves. There were nose-type impulse turbines, McCormick-type impulse turbines, once-through turbines, double propeller turbines, double spiral turbines, Savonius turbines, Welsh turbines, and the like. Axial turbines have a series of valve failures and defects when controlling the air flow with a valve box.Valveless impulse turbine systems have a somewhat complicated structure, such as stator vanes and guide vanes. High speed rotating Welsh turbines are the most promising. The development of biplane Welsh turbines, biplane turbines with an angle of attachment, and a tandem wales turbine with two vertically arranged turbines is continuing. However, since the Welsh turbine is vertically symmetrical, if the angle of the blade is optimally designed, the thickness increases, and as a result, the air resistance increases, so that the efficiency cannot be maximized. The rotation is fast, but incomplete in terms of torque. Also, since it is suitable for being disposed in the path of air, it is not suitable for large-scale power generation by collecting air from a plurality of wave power absorbers with ducts or pressure piping.
Also, reduce the failure with a ball-shaped valve, provide a constant pressure tank,
There are some that aim at constant rotation, but they only use air at the time of compression. It is simpler and better if there is no valve. Once-through turbines and Savonius turbines have been studied, but few examples have been put to practical use. In any case, a simple and highly efficient valveless turbine for wave power generation has been desired for full-scale practical use of wave power.

[0003] The present invention provides a once-through type wave power turbine which is simple, has high energy efficiency and can cope with all types of wave power generation in order to eliminate such drawbacks. That is the challenge. Improving the efficiency of turbines that convert the power of waves that are clean and do not require any fuel into energy can also be a major problem for the global environment and humanity, which is currently a problem.

[Means for Solving the Problems] Cuts (slits) which serve as air jet ports and suction ports are formed on the upper and lower portions of the exterior of the turbine 1 with wave power air jet ports of the present invention, and guide plates are provided around them. Surrounded by an air outlet that also serves as a runner. (Claim 1) The air is concentrated at the guide plate jet port, and is blown at an optimum angle to each runner outer peripheral portion. All take in the energy of the air, both during compression exhaust and during negative pressure suction. Of course, it rotates in a fixed direction without a valve. Further, if a device for receiving air from several places in a concentrated manner is attached to the lower part of one of the guide plate outlets, the air can be collected by a duct or a pressure pipe and used for a large-scale power generation turbine. (Claim 2) For the runner, Pelton, Crossflow, Savonius, etc. are all effective. At present, the inventor has conducted experiments with a turbo crossflow and a radial fan (without a hollow portion) directly attached to the shaft, but it seems that the turbo crossflow is particularly good. Both are good rotation. Also, with the guide plate, restrict the air flow,
When the direction is applied to the wing so that it is at right angles as a whole, it rotates strongly. This is an important point of the present invention, in which the squeezed air exerts a strong force and blows out to the outer periphery of the runner wing. There is also the angle of contact with the wing and the principle of leverage (from the axis to the tip of the wing), which can provide the highest efficiency. The former flow-through type was a large air flow, which covered at most half of the surface, which is a big difference from rotating through the air. In addition, the self-starting is natural and the torque is high because the spray is concentrated. The position of the slit is 180 degrees, and the angle and width of the guide plate air outlet need to be individually designed according to the capacity of the air chamber. In any case, none of the turbines had a guide plate air jet that pressured the atmosphere.

[Operation] Since the present invention has the above structure,
If it is a pneumatic type, the power of the waves can be maximized regardless of the type of the primary conversion device. First, when the wave rises (at the time of air compression), the compressed air is ejected to the tip of the runner wing through the guide plate ejection port on the lower side of the turbine, and becomes rotational energy, and eventually the entire pressure becomes the upper pressure. Exit outside through the guide plate spout. When the wave descends (at the time of negative pressure), the air flows in from the upper guide plate jet and rotates the runner due to the strong retraction from below. Since the angle of the guide plate outlet is determined so that each of them rotates in the same direction, all the energy becomes regardless of whether the wave is up or down. Failure is unlikely to occur because there is no valve. If you connect a generator to this turbine,
Can generate electricity. For connection technologies (gears, belts, chains, transmission mechanisms, planetary gear mechanisms, etc.)
It is omitted because it is an existing technology.

Embodiment (a) A turbine of the present invention is installed on a buoy-type wave-powered air compression chamber so that no gap is formed outside. (Fig. 1) Of course, there is no problem even if the fixed type is installed separately. (B) From a plurality of fixed wave energy absorbing breakwaters, ducts,
Air is collected at one turbine by pressure piping or the like to generate high power. (Fig. 2, breakwater is omitted) It is also possible to generate power by piping from multiple buoys and breakwaters. Centralized maintenance related to turbines can be easily installed in a stable place.

[Effects of the Invention] The number of failures is small without a valve, and the structure is simple. We can take in energy that wave brings to the maximum. By collecting and delivering compressed air through ducts, pressure piping, etc., it is also suitable for large-scale power generation. Environmentally friendly wave power is currently in high cost and under study. The advent of turbines that have increased efficiency and are economically viable has the potential to promote the practical use of wave power at once, and has the potential to make a significant contribution to the future of mankind. In addition, the equipment can be used for a long period of time and is useful, and new demand in various fields (steel, cement, machinery, electricity, construction, civil engineering, etc.) is anticipated. Seems useful. In addition, the wave power inherently has the disadvantage of instability, considering that the future energy's favorite is hydrogen, seawater may be on the side, and it is also effective to convert all of it to electricity that produces hydrogen . If there is a large amount of inexpensive hydrogen generated by the wave power, the structure of the electric vehicle using the fuel cell is considerably simplified, and the energy of the wave drives the land vehicle. result,
Fossil fuel consumption will be reduced, which will help prevent global warming.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the flow of air when a buoy is installed in a turbine of the present invention.

FIG. 2 is a partial cross-sectional perspective view of the present invention with a centralized air receiving device attached to a lower part of a turbine.

[Explanation of symbols]

 (1) Turbine exterior (2) Guide plate air outlet (3) Runner (fan) (4) Buoy (5) Shaft (6) Air flow during compression (7) Negative pressure Air flow (8) is a centralized air receiving device (9) is a vent (10) is a pressure pipe (suction and intake pipe mounting port) (11) is a wave

Claims (2)

[Claims] 1. A valveless turbine with a wave-force guide plate air jet port having air jet ports (ports surrounded by a guide plate also serving as an exhaust port) provided above and below a turbine exterior part. 2. A wave power receiving device according to claim 1, wherein a receiving device for centrally managing the air is attached to one of the ejection ports of the turbine exterior so that air can be taken in and out of a duct or a pressure pipe from the plurality of wave power absorbing devices. Valveless turbine with guide plate air jet.