KR100814132B1 - A equipment wind power generation complex - Google Patents

Abstract

A complex wind power generating system is provided to improve space utilization and output by rotating a vertical blade forcedly using the rotational force of a horizontal blade. A complex wind power generating system comprises a horizontal blade(10), a first line(20), a generating hydraulic motor(30), a generator(40), second to sixth lines(50~90), a vertical blade(100), a pre-load reservoir(110), a pair of selecting valves(130), a vertical driving valve(140), a seventh line(150). The horizontal blade has a horizontal shaft(11), a horizontal blade(12), a horizontal booster(13), and a horizontal hydraulic pump(14). The horizontal shaft is horizontally aligned on the ground. The horizontal blade is rotated at the horizontal shaft. The horizontal booster is connected with the horizontal shaft. The horizontal hydraulic pump is connected with the horizontal booster and generates hydraulic power. The vertical blade has a vertical hydraulic motor(101), a vertical hydraulic pump(102), a vertical booster(103), a vertical shaft, and a vertical blade. The vertical hydraulic motor is installed at the fifth line. The vertical hydraulic pump is installed at the sixth line. The vertical booster is connected with the vertical hydraulic motor and the vertical hydraulic pump. The vertical shaft is connected with the vertical booster and vertically placed on the ground. The vertical blade is rotated at the vertical shaft.

Description

Composite wind power generation system {A EQUIPMENT WIND POWER GENERATION COMPLEX}

1 is a hydraulic circuit diagram showing a hybrid wind power generation system according to a preferred embodiment of the present invention.

Figure 2 is a conceptual diagram showing another embodiment of the hydraulic motor for power generation of Figure 1;

FIG. 3A is a hydraulic circuit diagram showing operation at initial startup of FIG. 1. FIG.

3b is a hydraulic circuit diagram showing operation in a steady state after the initial startup of FIG.

4 is a conceptual diagram illustrating a combined vertical axis wind power generation system.

<Explanation of symbols for the main parts of the drawings>

10: horizontal axis blade 11: horizontal axis

12: horizontal blade 13: horizontal accelerator

14 horizontal hydraulic pump 20 first line

30: hydraulic motor for power generation 40: generator

50: second line 60: third line

70: fourth line 80: fifth line

90: sixth line 100: vertical axis blade

101: vertical hydraulic motor 102: vertical hydraulic pump

103: vertical accelerator 104: vertical axis

105: vertical blade 110: preload oil storage

120: high pressure accumulator 130: selection valve

140: vertical axis drive valve 141: variable spring adjustment mechanism

150: seventh line 160: first pilot line

170: second pilot line 180: pressure safety valve

190: first check valve 200: second check valve

210: third check valve 220: fourth check valve

230: fifth check valve 240: sixth check valve

250: 7th check valve 260: swivel joint

A: intersection

The present invention relates to a hybrid wind power generation system.

Wind power generation is a device that generates electric power by converting wind kinetic energy from generator to electrical energy by using blade rotation. Especially, wind power generation converts wind energy around us into electrical energy. It is a promising alternative energy technology that is a future-oriented technology with the advantages of indefinite resources, cleanliness of energy, and universality of technology. Wind power generation is largely composed of a mechanical unit that converts wind energy into mechanical energy, an electrical unit that converts the converted energy into electrical energy, and a control unit that controls the operability of the system.

The conventional wind power generation system as described above is disclosed in Korean Utility Model Registration Application No. 2004-0025959 (Registration No. 0370510) (name: composite vertical axis wind power generation system). According to the above publication, as shown in Figure 4, in the vertical axis wind power generation system consisting of a vertical axis (30) rotated by wind power and a generator (60) for generating electricity in accordance with the rotation of the vertical axis (30) A savonius rotor coupled to the vertical axis 30 and composed of two blades 10; A semi-cylindrical rotor positioned on the upper side of the savonius rotor and having a semi-cylindrical blade (13) attached to an end of the plurality of bars extending radially outwardly from the vertical axis (30); It is located between the vertical shaft 30 and the generator 60, the speed increaser 50 for converting the rotational speed of the vertical shaft 30 to the number of revolutions required for the generator 60; The vertical axis wind power generation system includes a starting motor 80 which rotates according to the supply of power; A power transmission unit 100 for transmitting or blocking the rotational force of the starting motor 80 to the vertical shaft 30; A brake (40) attached to one side of the vertical shaft (30) to stop the rotation of the vertical shaft (30); An anemometer 110 for measuring wind speed; And a controller 70 that receives the signal from the anemometer 110 and controls the starting motor 80 and the brake 40 according to the wind speed to adjust the rotational speed of the vertical axis 30. .

The conventional technology configured as described above is to increase the efficiency of the vertical axis wind power generator to enable economic development even if the use of the vertical axis wind power generator is difficult to change from time to time.

However, the above-mentioned conventional technology is simply a wind power generator using only a vertical shaft blade, which does not use a horizontal shaft blade and a vertical shaft blade at the same time, resulting in a large problem that more efficient and economical energy cannot be obtained. That is, the conventional technology has a problem that the efficiency is significantly low because it is not possible to obtain a torque of a large maneuverability by using only one vertical axis blade.

In addition, the conventional wind power generator has a problem that the output fluctuations according to the noise pollution and the wind direction is not improved, and also does not improve the starting characteristics even at low wind speeds.

The present invention has been made to solve the above problems, to provide a hybrid wind power generation system that maximizes space utilization by using a high efficiency horizontal axis blade and vertical axis blade at the same time, and can obtain a large output with low noise. There is a purpose.

The hybrid wind power generation system of the present invention for achieving the above object, a horizontal axis disposed horizontally with respect to the ground, a horizontal blade rotatably installed on the horizontal axis, and a horizontal accelerator connected to the horizontal axis for speed increase; A horizontal shaft blade connected to the horizontal accelerator and including a horizontal hydraulic pump for generating hydraulic power; A first line connected to an outlet of the horizontal hydraulic pump; A power generation hydraulic motor connected to the first line and driven by hydraulic power generated by the horizontal hydraulic pump; A generator connected to the power generation hydraulic motor and generating power by driving the power generation hydraulic motor; A second line connected to an outlet of the hydraulic motor for power generation; A third line connecting the first line and the second line; A fourth line branched at an intersection where the third line and the first line intersect; A fifth line branched from the second line and connected to the intersection point; A sixth line branched from the second line and connected to the fourth line; A vertical hydraulic motor installed in the fifth line, a vertical hydraulic pump installed in the sixth line, a vertical speed increaser connected to the vertical hydraulic motor and the vertical hydraulic pump and connected to the vertical speed increaser, A vertical axis blade including a vertical axis disposed vertically and a vertical blade rotatably installed on the vertical axis; A preload oil reservoir installed at the end of the second line, storing a low pressure working oil, and providing suction pressure to the horizontal hydraulic pump and the vertical hydraulic pump; A high pressure accumulator installed at the end of the fourth line and storing high pressure hydraulic oil and supplying the stored hydraulic oil if necessary; The vertical hydraulic motors of the fifth line are respectively installed on both sides of the fifth line, and the fifth line is in communication with each other at the initial startup, and is switched after the initial startup to block the fifth line and operate the vertical hydraulic motor at no load. A pair of selector valves; A vertical shaft driving valve installed between the crossing point of the first line and the generator and blocking the first line at an initial start-up, and switched after the initial start-up to communicate with the first line; And a seventh line branched from the second line and connected to a suction port of the horizontal hydraulic pump.

In the above,

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a hydraulic circuit diagram showing a hybrid wind power generation system according to a preferred embodiment of the present invention, Figure 2 is a conceptual diagram showing another embodiment of the hydraulic motor for power generation of Figure 1, Figure 3a is the initial of FIG. It is a hydraulic circuit diagram which shows the operation | movement at the start, FIG. 3B is a hydraulic circuit diagram which shows the operation | movement in a steady state after the initial starting of FIG.

As shown in FIG. 1, the hybrid wind power generation system of the present embodiment includes a horizontal shaft blade 10, a first line 20, a power generation hydraulic motor 30, a generator 40, and a second line 50. Third line 60, fourth line 70, fifth line 80, sixth line 90, vertical shaft blade 100, preload oil reservoir 110, high pressure accumulator 120 and selection valve 130, a vertical axis driving valve 140, and a seventh line 150.

The horizontal shaft blade 10 includes a horizontal shaft 11 disposed horizontally with respect to the ground, a horizontal blade 12 rotatably installed on the horizontal shaft 11, and a horizontal speed increaser 13 connected to the horizontal shaft 11 for speed increase. And a horizontal hydraulic pump 14 connected to the horizontal accelerator 13 to generate hydraulic power.

This horizontal shaft blade 10 has the advantage of high efficiency and simple structure, by installing a horizontal accelerator 13 to meet the inherent minimum rotational speed of the horizontal hydraulic pump 14 generates an appropriate hydraulic power.

The first line 20 is connected to the discharge port of the horizontal hydraulic pump 14.

The power generation hydraulic motor 30 has an input connected to the first line 20, driven by hydraulic power generated by the horizontal hydraulic pump 14, and the generator 40 is a power generation hydraulic motor 30. Is connected to, and the power generation by the drive of the hydraulic motor 30 for power generation.

In FIG. 1 of the present specification, a fixed displacement hydraulic motor is illustrated as a power generation hydraulic motor 30, but a variable displacement hydraulic motor capable of changing the rotational speed of a motor even when a flow rate is constant as shown in FIG. 31) can of course be used. Since the variable displacement hydraulic motor 31 can change the flow rate required for one revolution, the rotational speed and the rotation torque of the hydraulic motor 31 can be adjusted regardless of the change in the supplied flow rate. In addition, when the variable displacement hydraulic motor 31 is mounted, it is possible to adjust the frequency of the generator 41 in a mechanical manner without the output of the generator 41 by electrical signal processing.

The second line 50 is connected to the discharge port of the power generation hydraulic motor 30, the third line 60 connects the first line 20 and the second line 50, the fourth line 70 ) Is branched at the intersection A where the third line 60 and the first line 20 intersect, and the fifth line 80 branches at the second line 50 to cross the intersection A. The sixth line 90 is connected to the fourth line 70 by branching from the second line 50.

The vertical shaft blade 100 includes a vertical hydraulic motor 101 installed at the fifth line 80, a vertical hydraulic pump 102 installed at the sixth line 90, a vertical hydraulic motor 101 and a vertical hydraulic pump 102. ) And a vertical speed increaser 103 for increasing speed, a vertical axis 104 connected to the vertical speed increaser 103 and disposed perpendicular to the ground, and a vertical blade 105 rotatably installed on the vertical axis 104. ).

Since the vertical shaft blade 100 is required to have a strong wind speed for generating a rotational force for initial startup, a vertical hydraulic motor 101 is installed to receive and use a portion of the hydraulic power generated from the horizontal shaft blade 10 during initial startup. It is.

The preload oil reservoir 110 is installed at the end of the second line 50. Since the horizontal and vertical hydraulic pumps 14 and 102 and the preload oil reservoir 110 have a relative position difference, each hydraulic pump 14 and 102 requires suction pressure, but no external power must be supplied. In order to provide suction pressure to the hydraulic pumps 14 and 102, a preload oil reservoir 110 is installed and stores hydraulic oil of low pressure.

The preload oil reservoir 110 is similar in structure to the high pressure accumulator 120 described below, and has a rubber membrane (not shown) or a piston chamber (not shown) enclosed with a spring or gas pressure, and has a low elasticity. Enclose a spring or low pressure gas pressure.

The high pressure accumulator 120 is installed at the end of the fourth line 70. Looking at the function of the high pressure accumulator 120, the hydraulic oil discharged from the hydraulic pump has a pressure pulsation or flow rate pulsation by the structure, the flow rate decreases or increases due to a sudden change in the wind speed or air volume, etc. ) Stores the high pressure hydraulic fluid in the normal state after the initial start-up, supplies the hydraulic fluid when the supply flow decreases, and stores the hydraulic fluid when the supply flow increases.

The pair of selector valves 130 are installed at both sides of the vertical hydraulic motor 101 of the fifth line 80, respectively, to allow the fifth line 80 to communicate with each other during initial startup, and are switched after the initial startup. Five lines 80 are cut off and the vertical hydraulic motor 101 operates to operate at no load.

The vertical shaft drive valve 140 is installed between the crossing point A of the first line 20 and the generator 40, and the variable spring control mechanism 141 as a valve for determining the forced driving of the vertical shaft blade 100. Is included, the first spring 20 is blocked by the variable spring adjustment mechanism 141 at the initial startup, and is switched after the initial startup is operated so that the first line 20 is in communication.

The seventh line 150 is branched from the second line 50 and connected to the suction port of the horizontal hydraulic pump 14.

In the above, it is preferable to further include a swivel joint 260 which is connected to the first line 20 and the seventh line 150 and disposed on the inlet and outlet sides of the horizontal hydraulic pump 14.

The swivel joint 260 is generally the same as the slip ring (slip ring) used in the motor, and serves to supply the operating oil for connecting the pipe fixed and the pipe in rotation or reciprocating motion with each other.

In the above, it is preferable to further include a first pilot line 160 and the second pilot line 170.

The first pilot line 160 is connected to the sixth line 90 and the selector valve 130, and when the hydraulic oil is supplied to the sixth line 90, the pressure is applied to the selector valve 130 so that the selector valve 130 is switched. Add. The second pilot line 170 is connected to the sixth line 90 and the vertical shaft drive valve 140, and when the hydraulic oil is supplied to the sixth line 90, the vertical shaft drive valve 140 is switched so that the vertical shaft drive valve 140 is switched. Pressure).

In addition, it is preferable to further include a pressure safety valve 180, the pressure safety valve 180 is installed in the third line 60 to limit the use pressure to prevent the generation of high pressure due to overload.

Furthermore, it is preferable to include the first to seventh check valve (190 to 250) for controlling the direction of the working oil.

The first check valve 190 is installed between the discharge port of the horizontal hydraulic pump 14 of the first line 20 and the intersection point A, and the hydraulic oil 30 for power generation at the horizontal hydraulic pump 14 side. The second check valve 200 is installed in the second line 50, the hydraulic oil is supplied to the pre-pressure reservoir 110 side from the hydraulic motor 30 for power generation, and the third check valve 210 is installed in the fifth line 80, the hydraulic oil is supplied to the preload reservoir 110 from the selection valve 130 side, the fourth check valve 220 is installed in the sixth line (90). The hydraulic oil is supplied from the preload reservoir 110 to the vertical hydraulic pump 102, and the fifth and sixth check valves 230 and 240 are respectively installed in the sixth line 90, and the hydraulic oil is installed in the vertical hydraulic pump ( 102 to be supplied to the high-pressure accumulator 120 side, the seventh check valve 250 is installed in the seventh line 150, the hydraulic oil in the pre-pressure reservoir 110 side horizontal hydraulic pump (14) to be supplied.

Hereinafter, the operation state of the hybrid wind power generation system of the present invention configured as described above is as follows.

First, let's look at the operating state of the hybrid wind power generation system at the initial start-up. Initial start-up is when the wind is started by blowing the breeze with all devices in the system completely stopped.

When the breeze blows and the horizontal blade 12 rotates, the rotational force of the horizontal blade 12 is transmitted to the horizontal accelerator 13 by the horizontal shaft 11, and the horizontal hydraulic pump starts to rotate when the horizontal accelerator 13 starts to rotate. Negative pressure occurs at the inlet of (14). Due to this negative pressure, the hydraulic oil of the preload reservoir 110 passes through the seventh check valve 250 along the seventh line 150 along the second line 50 and intersects with the second line 50, and swivel joint. Passed through 260 is supplied to the suction port of the horizontal hydraulic pump (14).

In addition, the hydraulic oil is discharged through the discharge port of the horizontal hydraulic pump 14 by the rotational force generated by the horizontal blade (12). The hydraulic oil discharged from the horizontal hydraulic pump 14 passes through the swivel joint 260 along the first line 20 and passes through the first check valve 190.

At this time, the vertical shaft drive valve 140 does not operate in a state in which the vertical shaft blade 100 does not operate. Accordingly, the hydraulic oil discharged from the horizontal hydraulic pump 14 is driven by the vertical shaft drive valve 140 to the pressure safety valve 180 along the third line 60 and the high pressure accumulator 120 along the fourth line 70. ) Flows to the sixth check valve 240 side along the sixth line 90 and to the selector valve 130 along the fifth line 80.

Here, there is no flow through the pressure safety valve 180 unless the operating pressure of the pressure safety valve 180 is reached, and there is no flow through it according to the installation direction of the sixth check valve 240, and the high pressure accumulator Only the flow filling the 120 and the flow through the selection valve 130 occurs.

Since the selector valve 130 is in the upper position by a spring, the hydraulic oil supplied to the selector valve 130 is supplied to the selector valve 130 again through the vertical hydraulic motor 101 and then through the third check valve 210. Return to the preload reservoir 110.

The vertical hydraulic motor 101 is rotated by the hydraulic oil supplied to the vertical hydraulic motor 101, and the generated rotational force forcibly rotates the vertical blade 105 through the vertical accelerator 103.

Next, the operation state of the hybrid wind power generation system in a normal state when the proper wind power capable of rotating the vertical blade 100 and the horizontal blade 10 after the initial start is maintained will be described.

Since the static rotational resistance is greater than the dynamic rotational resistance, after overcoming the static rotational resistance of the vertical blade 105, the rotational force generated by the horizontal blade 12 is used for the operation of the generator 40.

In other words, by supplying the hydraulic power generated in the horizontal hydraulic pump 14 by the horizontal blade 12 to the vertical hydraulic motor 101 forcibly rotates the vertical blade 105, the vertical blade 105 overcomes the static rotational resistance Do it.

When the vertical blade 105 starts to rotate by overcoming the static rotational resistance and then starts to rotate by wind power supplied from the outside, the vertical hydraulic pump through the vertical accelerator 103 connected to the vertical shaft 104 ( 102 is operated, and the vertical hydraulic pump 102 supplies hydraulic oil to the sixth line.

At this time, the vertical hydraulic pump 102 is supplied with the working oil from the preload reservoir (110). That is, the hydraulic oil stored in the preload reservoir 110 passes through the fourth line along the fifth line 80 and passes through the fourth check valve 220 to be supplied to the vertical hydraulic pump 102.

When the hydraulic oil is supplied to the sixth line 90 by the vertical hydraulic pump 102, pressure is applied to the selection valve 130 so that the selection valve 130 is switched through the first pilot line 160. As a result, the selector valve 130 is changed to the lower position, and the vertical hydraulic motor 101 operates under no load according to the flow path formed by the selector valve 130.

In addition, the operating oil is supplied to the sixth line 90 so that the second pilot line 170 pressurizes the vertical shaft driving valve 140 so that the vertical shaft driving valve 140 is switched, whereby the vertical shaft driving valve 140. Is switched.

As the vertical shaft drive valve 140 is switched, the hydraulic oil supplied from the horizontal hydraulic pump 14 passes through the vertical shaft drive valve 140 along the first line 20 and is supplied to the hydraulic motor 30 for power generation. The hydraulic oil supplied from the hydraulic pump 102 passes through the fourth line 70 along the sixth line 90, passes through the vertical axis drive valve 140 through the first line 20, and generates the hydraulic motor 30 for generation. Is supplied.

The hydraulic oil supplied to the power generation hydraulic motor 30 passes back through the second check valve 200 along the second line 50 and returns to the preload reservoir 110.

The hydraulic motor 30 for power generation generates power by transmitting rotational force to the generator 40.

As described above, by using the highly efficient horizontal shaft blade 10 and the vertical shaft blade 100 at the same time to maximize the space utilization, it is possible to obtain a large output with low noise.

In addition, the rotational force generated by the horizontal blade 10 forcibly rotates the vertical blade 100 can reduce the power loss and increase the amount of power generated.

As described above, although described with reference to a preferred embodiment of the present invention, those skilled in the art various modifications of the present invention without departing from the spirit and scope of the invention described in the claims below. Or it may be modified.

According to the hybrid wind power generation system of the present invention as described above, has the following advantages.

By combining high-efficiency horizontal blades and vertical blades at the same time, the combination of the advantages, maximizing space utilization, high noise with low noise, and development in terrain where the wind direction changes frequently.

In addition, the rotational force generated by the horizontal shaft blade forcibly rotates the vertical shaft blade to reduce the power loss and increase the amount of power generated.

Claims (4)

A horizontal shaft disposed horizontally with respect to the ground, a horizontal blade rotatably installed on the horizontal axis, a horizontal accelerator connected to the horizontal axis for increasing speed, and a horizontal hydraulic pump connected to the horizontal accelerator for generating hydraulic power A horizontal shaft blade; A first line connected to an outlet of the horizontal hydraulic pump; A power generation hydraulic motor connected to the first line and driven by hydraulic power generated by the horizontal hydraulic pump; A generator connected to the power generation hydraulic motor and generating power by driving the power generation hydraulic motor; A second line connected to an outlet of the hydraulic motor for power generation; A third line connecting the first line and the second line; A fourth line branched at an intersection point where the third line and the first line cross each other; A fifth line branched from the second line and connected to the intersection point; A sixth line branched from the second line and connected to the fourth line; A vertical hydraulic motor installed in the fifth line, a vertical hydraulic pump installed in the sixth line, a vertical speed increaser connected to the vertical hydraulic motor and the vertical hydraulic pump and connected to the vertical speed increaser, A vertical axis blade including a vertical axis disposed vertically and a vertical blade rotatably installed on the vertical axis; A preload oil reservoir installed at the end of the second line, storing a low pressure working oil, and providing suction pressure to the horizontal hydraulic pump and the vertical hydraulic pump; A high pressure accumulator installed at the end of the fourth line and storing high pressure hydraulic oil and supplying the stored hydraulic oil if necessary; The vertical hydraulic motors of the fifth line are respectively installed on both sides of the fifth line, and the fifth line is in communication with each other at the initial startup, and is switched after the initial startup to block the fifth line and operate the vertical hydraulic motor at no load. A pair of selector valves;  A vertical shaft driving valve installed between the crossing point of the first line and the generator and blocking the first line at an initial start-up, and switched after the initial start-up to communicate with the first line; And And a seventh line branched from the second line and connected to a suction port of the horizontal hydraulic pump. The method of claim 1, A first pilot line connected to the sixth line and the selection valve and configured to pressurize the selection valve so that the selection valve is switched when hydraulic oil is supplied to the sixth line; And a second pilot line connected to the sixth line and the vertical shaft driving valve and applying pressure to the vertical shaft driving valve so that the vertical shaft driving valve is switched when the hydraulic oil is supplied to the sixth line. Type wind power system. The method of claim 1, The wind turbine system of claim 3, further comprising a pressure relief valve installed in the third line to prevent the generation of high pressure by overload by limiting the use pressure. The method of claim 1, A first check valve installed between the discharge port of the horizontal hydraulic pump and the intersection point of the first line, so that hydraulic fluid is supplied from the horizontal hydraulic pump to the power generation hydraulic motor; A second check valve installed in the second line and configured to supply hydraulic oil from the power generation hydraulic motor to the preload reservoir; A third check valve installed in the fifth line and configured to supply hydraulic oil from the selection valve side to the preload reservoir; A fourth check valve installed in the sixth line and configured to supply hydraulic oil from the preload reservoir to the vertical hydraulic pump; Two fifth and sixth check valves respectively installed in the sixth line and configured to supply hydraulic oil from the vertical hydraulic pump to the high pressure accumulator; And a seventh check valve installed at the seventh line and configured to supply hydraulic oil from the preload reservoir to the horizontal hydraulic pump.

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