CN104343626B - Self-protection wind-driven water lifting system with accelerating vanes - Google Patents

Abstract

The invention relates to a self-protected wind water lifting system with speed-increasing blades, which includes a water lifting mechanism directly driven by a wind power transmission mechanism, and is characterized in that the blades are NACA series airfoils in section and have low wind speed starting and high output Torque streamlined speed-increasing blade, the blade is a blade root with a low tip speed ratio and a large twist angle, and is divided into 20 sections from the blade root to the tip to set the installation angle, and a smooth transition is adopted between each section; The water outlet of the water pump of the water mechanism is connected with the water outlet pressure regulating cylinder of the hydraulic speed regulating mechanism. The invention can not only solve the problems of large number of blades and low utilization rate of wind energy in the traditional wind power water lifting system, but also skillfully use the water pressure of the water pump outlet under strong wind to drive the action of the hydraulic speed regulating mechanism, and control the wind power transmission mechanism to respond to the deviation in time. Navigation, to achieve the purpose of automatic protection system unit, suitable for farmland irrigation applications in remote areas lacking power resources.

Description

A self-protected wind-powered water-lifting system with speed-increasing blades

technical field

The invention belongs to the technical field of new energy, and in particular relates to a self-protecting wind-powered water-lifting system with speed-increasing blades.

Background technique

New energy has highlighted an increasingly important position and role in today's economic and social development. Wind energy has been widely used as a clean, non-polluting and cheap renewable energy. At present, there are mainly two ways to utilize wind energy. One is to convert wind energy into mechanical energy through a wind power generation device, and then convert the mechanical energy into electrical energy through a generator and incorporate it into the grid for utilization. This method of wind energy utilization has been studied in depth and has been A mature wind power theory and industrial model has been formed. However, this kind of wind power generation requires a more complex control system, as well as relatively expensive electrical equipment such as generators and frequency converters; the other is to use mechanical devices to directly convert wind energy into mechanical energy. To be utilized, the wind power water lifting device belongs to this category. Wind water lifting only relies on natural wind resources to drive water pumps to complete the water lifting operation. Compared with wind power generation devices, it has simple mechanical structure, low cost, and convenient operation and maintenance. However, there are still many difficult problems in wind power water lifting, such as the number of blades Many problems, low wind energy utilization rate of blades, low power, matching of fans and pumps, etc., all of these make wind power water pumping need further in-depth research.

Chinese patent application 201110316710.1 discloses a "wind-powered water-lifting irrigation system", which uses a crankshaft to form a crank-link mechanism to lift water; A wind-powered water-lifting device for large-scale wind collection by the wind wheel, but the wind wheel still adopts an arc-shaped multi-blade structure, and there is no automatic braking device under strong wind conditions; Chinese patent application 201310358909.X discloses a wind-powered water lifter that can The wind-powered water-lifting machine for deep water and shallow water lifting does not improve the arc-shaped multi-blade structure; Chinese patent application 200810119891.7 discloses a vertical shaft giant energy and energy-gathering wind power water pump unit, that is, a plurality of vertical shaft giant A vertical-axis wind-driven water-lifting system that can form a joint output of wind turbines in series, but because the wind energy utilization coefficient of the vertical-axis fan is low, the torque is small, and multiple vertical-axis fans are connected in series, not only the manufacturing cost increases, but also the efficiency of wind energy utilization is still not high enough; Chinese patent application 201210161249.1 discloses a wind turbine blade with an embedded guide tube. Although the noise and blade tip vortex are reduced to a certain extent, because the air outlet is opened on the top of the blade, when the airflow is ejected at high speed, it will A large reaction force is caused in the radial direction of the blade, which increases the force load of the hub and the tower, which not only affects the wind energy utilization rate of the unit, but also increases its manufacturing cost.

At present, most of the wind-powered water-lifting devices that have formed an industrial scale use multi-blade, low-speed, and low-wind energy utilization systems. The large number of blades makes the wind wheel solid and the airflow flowing through the wind wheel is less, thus affecting the wind power. Its output power; at the same time, the design of the blades mostly adopts the traditional flat plate or arc plate type, the efficiency of wind energy utilization is low, and it is easy to cause waste of wind energy resources. To sum up, how to improve the efficiency of wind power water pumping system is one of the key problems to be solved urgently in the field of new energy technology.

Contents of the invention

The purpose of the present invention is to provide a self-protection wind water lifting system with speed-increasing blades in order to overcome the shortcomings of the prior art. problem, and cleverly use the water pressure of the water pump outlet under strong wind to drive the action of the hydraulic speed regulating mechanism, control the wind power transmission mechanism to respond to the yaw in time, and achieve the purpose of automatically protecting the system unit.

According to the present invention, a self-protected wind-powered water-lifting system with speed-increasing blades includes a water-lifting mechanism directly driven by a wind-driven transmission mechanism, wherein: the main shaft of the water-lifting mechanism is horizontally fixed to the engine room through deep groove ball bearings at both ends Inside, a bevel gear pair is set on the main shaft and section I of the vertical shaft, section I of the vertical shaft is fixed in the vertical direction, section I of the vertical shaft is connected with section II of the vertical shaft through a universal coupling, section II of the vertical shaft is connected with section III of the vertical shaft through a spline, A water pump is set under the section III of the vertical shaft, and the disc with grooves is fixed under the section III of the vertical shaft, and the disc with slots drives the water pump to reciprocate; the hub of the wind power transmission mechanism is set at the front end of the nacelle and the blades are fixed, and the fairing is set on the hub The front end of the main shaft of the water lifting mechanism is connected to the hub located at the front end of the nacelle through the hub flange of the wind power transmission mechanism; it is characterized in that the blade adopts NACA series airfoil in section and has low wind speed starting and high output torque The streamlined speed-increasing blade is a blade root with a low tip speed ratio and a large twist angle. It is divided into 20 sections from the blade root to the tip to set the installation angle, and a smooth transition is adopted between each section; the water lift The water outlet of the water pump of the mechanism is connected with the water outlet pressure regulating cylinder of the hydraulic speed regulating mechanism.

The working principle of the present invention is: the new design of the streamlined speed-increasing blade proposed by the present invention is based on the highest point of the wind energy utilization curve of the wind turbine corresponding to an optimum angle of attack, and only when the wind turbine blade is at the optimum angle of attack, the wind energy can be utilized Therefore, each section of the wind turbine blade must be twisted to ensure that the blade works in the best state; when the wind turbine blade is rotating, due to the pressure difference between the upper and lower airfoils, the air flow on the pressure surface will be around. The airflow passing through the blade tip and the suction surface meets to form a blade tip vortex. The blade tip vortex causes the lift coefficient of the airfoil to decrease, which affects the wind energy utilization rate of the blade. When the speed is high, it will also produce adverse effects such as noise. 15% of the length of the blade, the airfoil on the pressure surface has the largest thickness, and a drainage tube is installed inside to guide the airflow on the pressure surface near the blade tip to the trailing edge of the blade tip with the same length, so as to reduce the occurrence of blade tip vortex , improve the utilization rate of wind energy, and at the same time, the ejected gas produces a circumferential reaction force on the trailing edge of the blade, which strengthens the rotation effect of the blade, reduces the starting wind speed of the water lifting system, and further improves the utilization rate of wind energy; at the same time, it is cleverly used The water pressure of the water pump outlet under strong wind drives the hydraulic speed regulating mechanism to make the wind power transmission mechanism respond to yaw in time in the strong wind state, and achieve the purpose of automatically protecting the system unit, especially the blades of the wind power transmission mechanism.

Compared with the prior art, the present invention has significant advantages in that:

One is that the present invention solves the problem of large number of blades and low utilization rate of wind energy in the traditional wind power water pumping system. The speed-increasing blade of the wind turbine is designed by adopting NACA series airfoil, and its chord length and installation angle are optimized, so that the blade’s aerodynamic The performance has been greatly improved; the test results show that the present invention, as a system powered by the wind starting at a low wind speed, can achieve a wind energy utilization coefficient of more than 0.42 in the wind-driven water-lifting unit, which is higher than the 0.35 of the common wind-driven water-lifting unit. At least a 20% improvement.

The second is that the blade of the present invention is provided with a drainage tube, which not only reduces the occurrence of the blade tip vortex, but also changes the position of the air outlet so that the ejected airflow can significantly promote the rotation of the blade, thereby improving the utilization of wind energy by the blade The wind speed reduces the blade from the original starting wind speed of 3m/s to 2.7m/s.

Third, compared with the wind-driven water-lifting unit with the same head, the wind-powered water-lifting system of the present invention reduces the number and blade length of the blades, and the wind energy utilization coefficient is greatly improved, which greatly reduces the manufacturing cost of the water-lifting unit.

The fourth is that the hydraulic speed regulating mechanism of the present invention is driven by the water pressure of the water pump outlet under high wind force, so that the wind power transmission mechanism can respond to yaw in time when the wind is high, and the automatic protection system unit, especially the blade of the wind power transmission mechanism, is achieved. Effect.

Fifth, the wind power water lifting system of the present invention is provided with a universal coupling and a spline on the main shaft, which is convenient for hoisting; after being put into use, except for routine maintenance, the water lifting can be completed automatically, without the need for personnel to take care of the operation.

Sixth, the mechanical structure of the present invention is simple and reliable, with low cost and high social and economic benefits, and is suitable for farmland irrigation in remote areas lacking power resources.

Description of drawings

Fig. 1 is a schematic front view of a self-protected wind-powered water-lifting system with speed-increasing blades proposed by the present invention.

Fig. 2 is a schematic front view of the blade proposed by the present invention.

Fig. 3 is a three-dimensional schematic diagram of the blade proposed by the present invention.

Fig. 4 is a schematic diagram of the tip drainage tube provided in the blade proposed by the present invention.

Fig. 5 is a three-dimensional schematic diagram of a blade with a drainage tube proposed by the present invention.

detailed description

The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples.

In conjunction with Fig. 1, a kind of self-protection wind power water lifting system with speed-increasing blades proposed by the present invention includes the water lifting mechanism directly driven by the wind power transmission mechanism, wherein: the main shaft (6) of the water lifting mechanism passes through the deep grooves at both ends The ball bearing (5) is horizontally fixed in the engine room (15), the bevel gear pair (8) is arranged on the main shaft (6) and the section I of the vertical shaft (9), the section I of the vertical shaft (9) is fixed in the vertical direction, and the section I of the vertical shaft (9) Connect with the vertical shaft II section (24) through a universal coupling (23), and the vertical shaft II section (24) is connected with the vertical shaft III section (25) through a spline (22). A water pump (28) is arranged below, and the grooved disc (26) is fixed below the vertical shaft III section (25), and the grooved disc (26) drives the water pump (28) to reciprocate; the hub (2) of the wind power transmission mechanism is set The blade (1) is fixed at the front end of the nacelle (15), and the fairing (3) is arranged on the front end of the hub (2); the front end of the main shaft (6) of the water lifting mechanism passes through the hub flange (4) of the wind power transmission mechanism and The hub (2) located at the front end of the nacelle (15) is connected; the blade (1) is a streamlined speed-increasing blade with a NACA series airfoil cross-section and low wind speed starting and high output torque. The blade (1) is a low The tip speed ratio and the blade root of the large twist angle are divided into 20 sections from the blade root to the tip to set the installation angle, and smooth transition is adopted between each section; The water outlet pressure regulating cylinder (12) of the hydraulic speed regulating mechanism is connected.

With reference to Fig. 2 and Fig. 3, the further optimization scheme of the self-protection wind power water lifting system with speed-increasing blade proposed by the present invention is:

The parameters of the installation angle and the chord length of each section of the blade (1) of the present invention are shown in Table 1 and Table 2 respectively:

Table 1: Parameter table of the installation angle of the section of the blade (1)

Section number Installation angle(°) Section number Installation angle(°) 1001 40.14 1011 22.00 1002 40.14 1012 20.29 1003 38.23 1013 18.67 1004 37.87 1014 17.12 1005 35.27 1015 15.63 1006 32.69 1016 14.13 1007 30.23 1017 12.58 1008 27.94 1018 10.86 1009 25.81 1019 8.66 1010 23.84 1020 5.92

The installation angle from the blade root to the blade tip is fitted to the sixth power of the number of sections, and the installation angle fitting equation is:

Y＝-9.21×10 ^-7 x ⁶ +8.33×10 ^-5 x ⁵ -3.71×10 ^-3 x ⁴ +8.39×10 ^-2 x ³ -0.899x ² +2.06x+38.86;

Table 2: Installation angle and chord length parameter table of the section of the blade (1)

Blade (1) The chord length of the blade from the blade root to the blade tip is fitted to the 7th power of the number of sections, and the chord length fitting equation is:

Y＝-9.60×10 ^-8 x ⁷ +6.85×10 ^-6 x ⁶ -1.99×10 ^-4 x ⁵ +3.07×10 ^-3 x ⁴ -2.64×10 ^-2 x ³ +1.21×10 ^-1 x ² -2.18×10 ^-1 x+0.37;

The number of blades is 6, which are evenly distributed in the circumferential direction of the hub (2).

In conjunction with Fig. 4 and Fig. 5, the blade (1) of the present invention is provided with the air inlet (32) of the draft pipe (31) on the pressure surface of 15% of the blade length away from the blade tip, and the part of the air flow on the blade tip pressure surface is guided To the trailing edge of the blade tip, and spray from the air outlet hole (33) of the drainage pipe (31) of the blade tip trailing edge.

The quantity of the drainage pipe (31) of the present invention is 2, and the air inlet (32) of the drainage pipe (31) is arranged on the pressure surface airfoil thickness of the blade (1) apart from the blade tip 15% of the length of the blade. The outlet hole (33) of the drainage pipe (31) at the sharp trailing edge is located at the blade tip trailing edge of the same length, and its diameter is no more than 50% of the thickness of the blade tip trailing edge.

The drainage pipe (31) of the present invention is a vertical pipe that runs through the interior of the blade (1) from the pressure surface of the blade (1) to the suction surface.

The hydraulic speed regulating mechanism of the present invention comprises a water outlet pressure regulating cylinder (12), an oil pump (11), an oil distributor (10), a hydraulic cylinder (19), a guide rail circular platform (18), a lever mechanism (16) and an empennage ( 7), wherein: the water outlet pressure regulating cylinder (12) is fixed on the bottom of the tower (27), its piston shaft is connected to the piston of the oil pump (11), the oil pipe output end of the oil pump (11) is connected to the oil distributor (10), and the oil distributor (10) is connected with the hydraulic cylinder (19), the upper end of the hydraulic cylinder (19) supports the guide rail circular platform (18), the fulcrum of the lever mechanism (16) is positioned at the bottom corner of the cabin (15), and the lever mechanism (16) The universal wheel (17) is tangent to the guide rail circular platform (18); the number of the hydraulic cylinders (19) is 3, which are evenly arranged on the circumference of the tower (27).

The end of the lever mechanism (16) of the present invention is connected to the empennage (7) through a steel wire rope around the guide pulley (14) through a spring (13), so that the empennage deflects to adjust the rotation speed of the blades in a strong wind state.

The component parameters and assembly requirements of the self-protected wind-powered water-lifting system with speed-increasing blades proposed by the present invention are as follows:

The blade (1) of the present invention is a streamlined speed-increasing blade with a NACA series airfoil profile and low wind speed starting and high output torque. The blade (1) adopts a low tip speed ratio of 1.8 and a blade root with a large twist angle , from the blade root to the blade tip is divided into 20 sections to design the installation angle, and the smooth transition is adopted between the sections. The installation angle of the blade root is 40.14°, and the installation angle of the blade tip is 5.92°. The angle and the number of sections are fitted to the 6th power, and the fitting equation is:

Y＝-9.21×10 ^-7 x ⁶ +8.33×10 ^-5 x ⁵ -3.71×10 ^-3 x ⁴ +8.39×10 ^-2 x ³ -0.899x ² +2.06x+38.86;

The chord length at the blade root is 0.2m, and the chord length at the blade tip is 0.12m. The chord length of the blade (1) is fitted from the heel to the blade tip and the number of sections to the 7th power, and the fitting equation is:

Y＝-9.60×10 ^-8 x ⁷ +6.85×10 ^-6 x ⁶ -1.99×10 ^-4 x ⁵ +3.07×10 ^-3 x ⁴ -2.64×10 ^-2 x ³ +1.21×10 ^-1 x ² -2.18×10 ^-1 x+0.37;

Drain tube (31) is set on the pressure surface of blade (1) away from the pressure surface of blade tip part 15% chord length blade length, the part air-flow of blade tip pressure surface is led to the trailing edge of blade tip, and the quantity of drain tube (31) is 2, the air inlet (32) of the drainage pipe (31) is arranged at the maximum thickness of the airfoil on the pressure surface of the blade (1) away from the blade tip 15% of the blade length, and the air outlet of the drainage pipe (31) at the trailing edge of the blade tip (33) Located at the blade tip trailing edge of the same length, the drainage pipe (31) is a vertical pipe that runs through the inside of the blade (1) from the pressure surface of the blade (1) to the suction surface; when the blade (1) rotates, due to its The air pressure on the pressure surface is higher than that on the suction surface, and the airflow spontaneously enters from the air inlet (32) of the drainage pipe (31) on the pressure surface of the blade (1), and enters from the air outlet (33) of the drainage pipe (31) at the trailing edge of the blade tip. ) ejection, which avoids part of the airflow from the blade tip bypassing the blade (1) and the airflow on the suction surface to meet to form a vortex, which reduces the generation of the blade tip vortex, improves the lift coefficient, and the wind energy utilization coefficient in the wind water pumping unit can reach At the same time, the airflow ejected from the trailing edge of the blade tip enhances the rotation effect of the blade. The wind drives the blade to rotate, and the blade transmits the torque generated by the rotation to the water lifting mechanism.

The main shaft (6) of the water-lifting mechanism is horizontally fixed in the nacelle (19) through the deep groove ball bearings (5) at both ends, and a bevel gear pair (8) is arranged on the main shaft (6) and the section I (9) of the vertical shaft. The bevel gear pair (8) is a first-stage bevel gear pair, and its transmission ratio is 1:2; in order to eliminate the error caused by the installation of the vertical shaft (6) being too long and to facilitate hoisting, the first section of the vertical shaft (9) passes through the universal joint The shaft device (23) is connected with the vertical shaft II section (24), the vertical shaft II section (24) is connected with the vertical shaft III section (25) through a spline (22), and a water pump (28) is arranged below the vertical shaft III section (25), The water pump (28) is driven to and fro by the grooved disk (26), so that the water is lifted from the downstream reservoir (29) to the upstream reservoir (30); the front end of the main shaft (6) of the water lifting mechanism passes through the hub flange ( 4) It is connected with the wheel hub (2) located at the front end of the engine room (15); the water outlet of the water pump (28) of the water lifting mechanism is connected with the water outlet pressure regulating cylinder (12) of the hydraulic speed regulating mechanism.

The hydraulic speed regulating mechanism includes a water pressure regulating cylinder (12), an oil pump (11), an oil distributor (10), a hydraulic cylinder (19), a guide rail circular platform (18), a lever mechanism (16) and an empennage (7 ), wherein: the water outlet pressure regulating cylinder (12) is fixed on the bottom of the tower (27), its piston shaft is connected with the piston of the oil pump (11), and the oil pipe output end of the oil pump (11) is connected to the oil separator above the tower (27). The oil distributor (10) is connected with the hydraulic cylinder (19) evenly distributed on the circumference, and the upper end of the hydraulic cylinder (19) supports a guide rail circular platform (18), and the lever mechanism (16) passes through the universal wheel (17) is tangent to the guide rail circular platform (18), and the end of the lever mechanism (16) is connected with the empennage (7) by the wire rope around the guide pulley (14) by the spring (13); when the strong wind comes, the blade (1) As the speed increases, the pressure at the water outlet of the water pump (28) increases, making the piston of the water outlet pressure regulating cylinder (12) upward, pushing the piston of the oil pump (11) parallel to it to move upward, and the output end of the oil pipe of the oil pump (11) passes through the oil distributor (10 ) evenly distribute the oil to the three hydraulic cylinders (19) on the guide rail circular platform (18), push the guide rail circular platform (18) upward, so that one end of the lever mechanism (16) is upward, and passes through the guide pulley (14) The empennage (7) is deflected so that the blades (1) of the wind power transmission mechanism deviate from the windward direction, so as to achieve the effect of automatically protecting the unit of the present invention, especially the blades (1).

The specific embodiment of the self-protection wind water lifting system with speed-increasing blades proposed by the present invention is as follows:

Embodiment 1: When the head is 5m and the incoming wind speed is 2.7m/s, the blade (1) of the self-protected wind water lifting unit with speed-increasing blades of the present invention starts to rotate, and now the water lifting mechanism can be directly driven Start to work and lift water; when the wind speed is 3m/s, the rotating speed of the blade (1) is stable, and the rotating speed of the blade (1) of the wind power water lifting unit with load is 25r/min; when the wind speed increases to 8m/s At the rated wind speed, the blade (1) of the wind power water lifting unit rotates at 75r/min, the water lifting flow is 25m ³ /h to 30m ³ /h when the lift is 5m, and the wind energy utilization rate is ≥0.42.

Embodiment 2: When the lift is 9m and the incoming wind speed is 2.7m/s, the blade (1) of the self-protection wind water lifting unit with speed-increasing blades of the present invention has begun to rotate. The rotating speed of the blade (1) is 27r/min. At this time, the wind power transmission mechanism has not driven the water lifting mechanism to work; when the wind speed reaches 3m/s, the wind power water lifting unit drives the water lifting mechanism to start working and lift water; when the wind speed is 3.5 At m/s, the rotating speed of the blade (1) of the wind power water lifting unit is stable. At this time, due to the load on the unit, the rotating speed of the blade (1) reaches 30r/min; when the wind speed increases to the rated wind speed of 8m/s, the wind power lifts The rotation speed of the blades (1) of the water unit is 65r/min, the water extraction flow rate is 10m ³ /h to 15m ³ /h, and the utilization rate of wind energy is ≥0.42.

The descriptions not involved in the specific embodiments of the present invention belong to the well-known technologies in the art, and may be implemented with reference to the known technologies.

The invention has been verified through repeated tests and has achieved satisfactory application effects.

Claims (8)

1. a kind of self-shield water pumping of the wind-force system with speedup blade, directly drives water elevator including by wind power transmission wind mechanism Structure, wherein：It is fixed in cabin (15) by deep groove ball bearing (5) level at two ends by the main shaft (6) of water lift mechanism, main shaft (6) go up and bevel gear pair (8) is set with I section of vertical shaft (9), vertical shaft I section (9) is fixed on vertical direction, and I section of vertical shaft (9) passes through ten thousand It is connected to shaft coupling (23) and vertical shaft II section (24), II section of vertical shaft (24) is connected by spline (22) and vertical shaft III section (25), Lower section setting water pump (28) of vertical shaft III section (25), slotted disk (26) is fixed on the lower section of vertical shaft III section (25), is justified by trough of belt Disk (26) drives water pump (28) to move back and forth；The wheel hub (2) of wind power transmission wind mechanism is arranged on the front end of cabin (15) fixing leaf Piece (1), trouserss (3) are arranged on the front end of wheel hub (2)；Wind power transmission wind mechanism is passed through in the front end of the main shaft (6) of water lift mechanism Wheelboss flange (4) is connected with the wheel hub (2) being located at cabin (15) front end；It is characterized in that described blade (1) adopts for section NACA series aerofoil sections and have low wind speed start and height output moment of torsion streamlined speedup blade, this blade (1) is low blade tip speed The when blade root of big torsional angle, is divided into setting established angles in 20 sections from blade root to blade tip, using smoothly transitting between each section； The outlet of water pump (28) of described water lift mechanism adjusts cylinder (12) with the discharge pressure of hydraulic speed regulating mechanism and is connected.

2. the self-shield water pumping of the wind-force system with speedup blade according to claim 1 is it is characterised in that described blade (1) parameter of the established angle in each section and chord length is respectively shown in following Tables 1 and 2：

Table 1：The established angle parameter list in the section of blade (1)

Section sequence number Established angle (°) Section sequence number Established angle (°) 1001 40.14 1011 22.00 1002 40.14 1012 20.29 1003 38.23 1013 18.67 1004 37.87 1014 17.12 1005 35.27 1015 15.63 1006 32.69 1016 14.13 1007 30.23 1017 12.58 1008 27.94 1018 10.86 1009 25.81 1019 8.66 1010 23.84 1020 5.92

It is 6 power matchings from blade root to blade tip established angle and section number, established angle fit equation is：

Y=-9.21 × 10^-7x⁶+8.33×10^-5x⁵-3.71×10^-3x⁴+8.39×10^-2x³-0.899x²+2.06x+38.86；

Table 2：The established angle chord length parameter table in the section of blade (1)

Section sequence number Chord length (m) Section sequence number Chord length (m) 1001 0.20 1011 0.44 1002 0.25 1012 0.43 1003 0.30 1013 0.42 1004 0.34 1014 0.40 1005 0.39 1015 0.39 1006 0.42 1016 0.37 1007 0.44 1017 0.35 1008 0.45 1018 0.33 1009 0.45 1019 0.29 1010 0.45 1020 0.12

Blade (1) is 7 power matchings from blade root to the chord length of blade tip blade and section number, and chord length fit equation is：

Y=-9.60 × 10^-8x⁷+6.85×10^-6x⁶-1.99×10^-4x⁵+3.07×10^-3x⁴-2.64×10^-2x³+1.21×10^{- 1}x²-2.18×10^-1x+0.37；

Blade quantity is 6, is evenly distributed on the circumference of wheel hub (2).

3. the self-shield water pumping of the wind-force system with speedup blade according to claim 1 is it is characterised in that described blade (1) air inlet (32) of drainage tube (31) is arranged on the pressure face apart from blade tip 15% length of blade, by blade tip pressure face Fraction causes the trailing edge of blade tip, and the venthole (33) from the drainage tube (31) of blade tip trailing edge sprays.

4. the self-shield water pumping of the wind-force system with speedup blade according to claim 3 is it is characterised in that described drain The quantity of pipe (31) is 2, and the air inlet (32) of drainage tube (31) is arranged on the pressure apart from blade tip 15% length of blade for the blade (1) Power face profile thickness maximum, the venthole (33) of the drainage tube (31) of blade tip trailing edge is located at the blade tip trailing edge of same length, Diameter is less than the 50% of blade tip trailing edge thickness.

5. the self-shield water pumping of the wind-force system with speedup blade according to claim 3 or 4 is it is characterised in that described draw Flow tube (31) is by the internal vertical pipe to suction surface of pressure face penetrating blade (1) of blade (1).

6. the self-shield water pumping of the wind-force system with speedup blade according to claim 1 is it is characterised in that described hydraulic pressure Speed adjusting gear includes discharge pressure and adjusts cylinder (12), oil pump (11), oil dispenser (10), hydraulic cylinder (19), guide rail annulus platform (18), leverage (16) and empennage (7), wherein：Discharge pressure adjusts cylinder (12) and is fixed on pylon (27) bottom, its piston shaft It is connected with the piston of oil pump (11), the oil pipe outfan of oil pump (11) is connected with the oil dispenser (10) above pylon (27), oil Allotter (10) is connected with hydraulic cylinder (19), this hydraulic cylinder (19) upper end supporting guide annulus platform (18), leverage (16) Fulcrum be located at cabin (15) bottom sharp corner, leverage (16) pass through universal wheel (17) and guide rail annulus platform (18) phase Cut.

7. the self-shield water pumping of the wind-force system with speedup blade according to claim 6 is it is characterised in that described hydraulic pressure The quantity of cylinder (19) is 3, is evenly arranged on the circumference of pylon (27).

8. the self-shield water pumping of the wind-force system with speedup blade according to claim 6 or 7 is it is characterised in that described thick stick Linkage (16) end is connected with empennage (7) by spring (13) by steel wire rope pile warp leading block (14).