KR860001962B1 - Method for generating electric power in a low potential head - Google Patents

Abstract

The headrace has inflow and outflow portions. Multiple turbines established in this headrace rotate by the water power of the headrace. The first turbine is connected with a pump to store the pressure water with the remaining water power. In a low potential head generation, the pressure water injected from the nozzle of the headrace inflow portion and air injected from the nozzle of the headrace inflow portion and air injection to one side of the turbines suports the turbine rotation. The second turbine is connected to the fixor of the generator and the third one to the rotor of each other. These turbines rotate reversely.

Description

Power generation method by ultra low drop aberration

1 is a perspective view showing the gist of the present invention.

2 is a table showing a calculation of output increase according to the output efficiency of the aberration of the present invention.

3 is an output plot according to the output theory of aberration.

4 is a development chart for the tidal cycle.

5 is a development diagram of the present invention.

* Explanation of symbols for main parts of the drawings

D: Raceway W _1,2,3 : Aberration

P _1,2 : Pump T _1,3 : Water chamber

T ₂ : air chamber d _1,2,3,4 : conduit

G: Generator S: Stator

R: It is a rotor.

The present invention relates to a power generation method by ultra low drop aberration, which makes it possible to effectively generate electric power of a specified frequency in an ultra low drop of a reservoir storing sea tides.

In the present invention, the pump aberration is installed at the upper side of the vertical raceway, and the rotor aberration and the stator aberration of the generator are respectively installed at the lower side of the tide level to operate the pump aberration with surplus hydraulic power to store energy in the form of pressure water. When a power generator generates electric power at a specified frequency and the water level is gradually lowered, and the development of the specified frequency cannot be expected, it is effective even at an extremely low water level by adding energy stored in the surplus hydraulic power by adding surplus hydraulic power. It is characterized in that it is possible to extend the generation time by tidal power of day by generating electric power, which extends the use range of tidal tide of tidal water repeated per day and increases tidal power generation under the same conditions. The aim is to improve economics more.

In general, tidal power generation includes forging power generation that develops during the low tide period after the water is contained in George, and forging power generation that is generated by tidal power when the water flows into George and hydropower when water flows into George. In any case, if the water level is high, it is basically generated by the effective drop of water. Only when the water level is reached, the power is generated by the hydropower, so the tidal power of the day is very short, and the break is much longer without power.

Fig. 4 (a) is a conventional forging single-flow power generation diagram, and Fig. 4 (b) is a conventional forging single-flow power generation diagram, in which the hydraulic power available for power generation in one tidal cycle is shown. It is extremely limited that the development time is very short. The reason for this is that, as shown in Fig. 5, for example, when the hydraulic power required for the development of the specified frequency is W ₁ indicated by the diagonal line in the chart, the surplus hydraulic power W ₂ is discarded because the hydraulic power of W is obtained at the high tidal level ho. Division level h ₁ in the hydroelectric W ₁ 10 002 as developed by the presence and water level h ₂ suitable for the development of the power of a specified frequency without excess hydropower can not be the development of a prescribed frequency to the lack of hydropower water level is actually available is h ₁ That's all. Therefore, hydropower W ₁ at low water level h ₂ cannot generate power due to insufficient generation of specified frequency, so the power generation time of day is not long as shown in 4 (a) and 4 (b). The economic feasibility of the Korea was not very much used until now.

The present invention is faced with the serious crisis of the urgent need to discover new natural energy sources due to the exhaustion of energy and widen the utilization of natural energy. By extending the time longer, the new economical tidal power generation method was developed by increasing the amount of energy recovered for the investment cost.

Figure 4 (c) is a forged bi-stream power generation application of the present invention, Figure 5 is a diagram showing the power generation method of the present invention.

In other words, in Fig. 5, when the water level at George's tide is full, h ₁ , the hydraulic power required for power generation of the specified frequency is W ₁ , and the surplus hydraulic power W ₂ is present at this time. Conventionally, this surplus hydraulic power W ₂ is discarded without use, but in the present invention, the pump aberration P is operated by the surplus hydraulic power to store surplus energy in an energy storage tank in the form of pressure water. Of course, at this time, generator G still generates the specified frequency.

Over time, as in accordance with the water level is not the water level, so the excess water power suitable to the development of the prescribed frequency in the drawing the water level generator to an intermediate level h _1, therefore this time starting pump aberration P is does not operate the movable and the energy reserves are expected It can't be time. When the time goes to ultra low water level h ₂ , it becomes the low water power W ₁ , which cannot generate the specified frequency in the generator G. In the past, power generation was stopped at this water level. However, in the present invention, the surplus energy is stored in the surplus hydraulic power without stopping the power generation. In other words, even though the water level is low in George, the water is abundant, and at this time, the pressure water reserved from the energy storage tank is injected into the raceway so that the rate of water drop at the low water level is much higher than that of the natural fall rate. As the velocity of water in the raceway with constant internal diameter eventually increases in hydraulic power, at low water pressure W ₁ at low water level h ₂ , it is finally developed to be effective hydraulic power for the regulation frequency generation by the assistance of reserve energy W ₃ . The sum of the reserve energy and the hydraulic power at the low water level continues until it becomes effective hydraulic power and stops below it. The generator can realize this action in a double flow type that can act both when the tide enters and exits when the water level drops, the power generation time is further extended, the power generation diagram of the present invention is shown in the fourth (c).

Under the same tidal water level, the water used in the conventional water level is only 3-6 meters, and the water use rate is only one-third, and the power generation time is 12 hours and 45 minutes, but the tide cycle is 5 hours. It can generate power up to only 0.5 meters, thus using more than 90% of the water contained in George, and the power generation time is extended to three times more than the conventional time of about 10 hours. Thus, the economics of tidal power generation are significantly improved.

The present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view showing the gist of the present invention. That is, a plurality of aberrations W ₁ , which are normally formed in D ₁ , D ₂ , which have inlets and outlets for inducing the tidal flow into and out of the george of the sea and rivers flowing into the freefall of the riverbed in any direction. W ₂ and W ₃ are installed at regular intervals up and down so that they can be rotated by the same power.

Time from the inlet side to the first aberration W ₁ has a rotary piston pump hayeoseo operating the pump P ₁ by the rotational force of the aberration W _first through conduit d conduit d ₂ the suction of water through the _first to direct a P ₁ fed under pressure to Sushil T ₁ and Susilo As the air of T ₁ is compressed, the water whose pressure is increased is sprayed to the nozzle n at the inlet side of the raceway D ₁ to increase the water flow in the raceway at a higher speed than the average drop, thereby increasing the flow rate of the raceway. The compressed air Sushil T ₁ is the bubble pump sikieo ejected to one side of the aberration on the raceway D _4, the lower side through the valve V by ₆ 0.05-0.2kg / air conditioning of the air chamber ₂ and the conduit T to ㎠ d ₄ The function assists the rotation of each of the aberrations W ₁ , W ₂ , W ₃ , and the bubbles are raised and returned to the T ₂ chamber. Directly connected to the _second aberration W ₂ installed in D ₂ to rotate the stator S of the generator G. In the third aberration W ₃ , the rotor R of the generator G is connected to the stator through the traditional mechanism wh ₁ , wh ₂ . It is installed so as to rotate in opposite directions, and it is generated by generator G by the shared rotation of each aberration by hydraulic power injected from high pressure water chamber.

Further development of excess hydraulic this when or development is to pump the water to start the water pump P ₂ to 3 times aberration W ₃ only when suspended on a conduit d ₃ a scale on Sushil T ₃ and then accumulated in the neck to fall energy is supplied as a water source And then reuse it.

In the present invention, the aberration is not specific, and a general aberration, such as Pelolon aberration (Francis aberration, propara aberration, tubera aberration, etc.) and other arbitrary aberrations, the pump is to use the rotary piston pump of Utility Model Registration No. 19158. good. It operates the _first aberration only in the surplus hydraulic power and stores the pressure water in the tank (T ₁ ), and then injects the stored pressure water in the low water power generation to increase the speed of the falling water to the raceway. It is an important point to use hydraulic power effectively.

At this time, the output of the aberration is as follows, for example, as shown in FIG.

That is, the amount of work per second that the injection force of the high pressure water in the accumulation chamber affects the runners of each

U(Vo-U)(1+Cos B)(kg/m/s)L =

U (Vo-U) (1 + Cos B) (kg / m / s)

L: The amount of work on the runner of the Plon aberration (kgm / s) Q: The amount of water ejected (m ³ / s) Vo: Flow rate (m / s) U: Main speed of the runner basket (m / s) g: Gravity (9.8m / s ² ) B: Angle between main speed and water flow rate, r: Specific weight of unit volume (1000kg / m ³ ) where the size of the nozzle and the bucket shape of the water aberration are determined, Q, Since Vo and B are also determined, the relationship between L and U at this time is as shown in FIG.

In other words, the main speed U is the maximum output at the half of the jet speed Vo.

=

(1+Cos B)(Kgm/s)시이론 출력의 최대는 B=O 일때 생긴다.Lamx =

=

The maximum of (1 + Cos B) (Kgm / s) theory output occurs when B = O.

However, in reality, the maximum output is achieved when U = (0.44 ~ 0.48) Vo due to friction loss.

(KW)가 된다.Also, generating power P =

(KW).

Thus, in the present invention, since the rotational force of the first aberration is used only to increase the flow rate of the raceway by using only the pump without using it elsewhere, the passage water through the raceway is increased in the pressure drop and is developed in the lowest drop because it is pumped into the pressure chamber.

Even in the case of flowing water, which is not a vertical drop, the apparatus of the present invention can be installed in a horizontal and horizontal type, and in this case, bubbles are used in the outlet. In the case of horizontal installation, the installation range of the aberration can be much wider.

In addition, in the present invention, the stator and the rotor of the generator are divided by rotation of the stator and the rotor by high-pressure water, so that the inputs of the rotating load of the stator and the rotor are divided, and as a result, the aberrations can be rotated by the ultra-low drop of hydraulic power, respectively. As the self-rotating counterclockwise, the relative rotational speed is further increased, so that high-speed rotation is possible without the speed increase mechanism of the conventional generator.

As described above, in the present invention, the aberration is installed in the ultra low drop raceway, so that some of the aberrations can play a role of increasing the flow rate of the raceway with the high pressure water by operating a pump. As this increased, the rotational force of the aberration can be increased, and the stator and the rotor of the generator can be dividedly rotated in the opposite directions so that the generator can be effectively developed even in the ultra-low free fall range. It can be widely used to secure and usefully use energy sources.

Claims (1)

It is equipped with water inlet and outlet, so that a plurality of aberrations of ordinary shape can be rotated by hydraulic power of the waterway, and the pump is connected directly to the first aberration from the inlet side, and the pump is operated with surplus hydraulic power to store the pressure water. In the next low water power generation, pressure water is injected into the nozzle of the inlet of the raceway to increase the hydraulic power with the flow water vapor in the raceway, and the air is ejected to one side of each waterway to assist the rotation of the waterwheel. The third aberration is connected to the rotor of the generator by generating a shared rotation in the opposite direction to generate power by ultra low drop aberration characterized in that.

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