CN203321745U

CN203321745U - Double-duct axial-flow type wind power generation system

Info

Publication number: CN203321745U
Application number: CN201320279644XU
Authority: CN
Inventors: 李勇强; 姚伯龙; 杨伟涛; 张红旭; 谢玉琪
Original assignee: JIANGSU ZHONGYUN WIND POWER TECHNOLOGY Co Ltd
Current assignee: JIANGSU ZHONGYUN WIND POWER TECHNOLOGY Co Ltd
Priority date: 2013-05-22
Filing date: 2013-05-22
Publication date: 2013-12-04
Anticipated expiration: 2023-05-22

Abstract

A double-duct axial-flow type wind power generation system comprises a front pipeline and a rear pipeline which are arranged in a sleeved-connection mode front and back, wherein the front pipeline is sleeved with the rear pipeline, the front pipeline and the rear pipeline are fixed and supported through a supporting plate, the front pipeline is provided with a first contracted pipe and a first wake flow pipe, the rear pipeline is provided with a second contracted pipe and a second wake flow pipe, an axial distance is reserved between the air inlet of the first contracted pipe and the air inlet of the second contracted pipe, the air inlet of the first contracted pipe is located in front of the second contracted pipe, the first wake flow pipe is close to the tail portion of the second contracted pipe, through holes are formed in the periphery of the tail portion of the first wake flow pipe, an impeller is arranged on the tail portion of the first contracted pipe, guide blades are arranged in the front pipeline, the guide blades are close to the impeller, and the impeller rotates under the action of wind power driving to drive an electric generator to generate electricity. The double-duct axial-flow type wind power generation system can effectively improve the wind speed in the pipes, therefore, the utilization rate of wind energy is further improved, and the efficiency of the electric generator is improved.

Description

A kind of pair of duct axial flow wind-power generating system

Technical field

The utility model relates to technical field of wind power generating equipment, is specifically related to effectively improve two duct axial flow wind-power generating systems of wind energy utilization.

Background technique

The wind gathering type wind-driven generator produced according to funnelling, because it has advantages of the wind energy of gathering, pressure-raising speedup, improves wind energy utilization, be with a wide range of applications in technical field of wind power generation.Current wind gathering type wind generating unit normally is arranged to intake grill a narrow pipe of bunching, for promoting wind speed, because wind is because there being the result of pressure difference Air Flow between diverse location, wind is in narrow pipeline in mobile process, flow velocity can be subject to the impact of inner-walls of duct resistance and internal pressure, and the lifting of wind speed is in fact very limited.Name as disclosed as Chinese patent ZL201220394391.6 is called the wind generating unit of " the narrow pipe wind-collecting wind generating of a kind of self set-up type system ", because intraductal pressure strengthens gradually along with the gathering of air, cause the pressure difference of air between entrance and pipe interior to reduce, this can hinder further entering of air-flow, finally hinders the further lifting of wind speed.Therefore, effectively improve the wind speed in pipe, can be studied from reducing inner-walls of duct resistance and increase entrance and two aspects of pipe interior pressure difference.Wherein, the reduction of inner-walls of duct resistance can realize by improving the inner-walls of duct smooth degree, is easier to realize; And to make the pressure difference between entrance and pipe interior increase, pressure that can be by increasing entrance is or/and reduce the pressure of pipeline exhaust outlet and realize, increase the pressure of entrance, can be improved by the measures such as shape that change wind gathering mouth, the pressure that how to reduce pipe interior is the research emphasis of wind speed in further riser.

The model utility content

The applicant is improved for above-mentioned shortcoming of the prior art, and a kind of pair of duct axial flow wind-power generating system is provided, and it can effectively improve wind speed in pipe, and then further improves wind energy utilization, raising generator efficiency.

The technical solution of the utility model is as follows:

A kind of pair of duct axial flow wind-power generating system, before comprising, preceding pipeline and rear pipeline that rear socket arranges, rear pipeline is socketed in the outside of preceding pipeline, pass through the support plate fixed support between preceding pipeline and rear pipeline, preceding pipeline is with bunching pipe one and wake flow pipe one, rear pipeline is with bunching pipe two and wake flow pipe two, leave axial distance between the intake grill of the intake grill of bunching pipe one and bunching pipe two, and the intake grill of bunching pipe one is positioned at the place ahead of bunching pipe two, wake flow pipe one is near the afterbody of bunching pipe two, the afterbody of wake flow pipe one is provided with through hole along periphery, impeller is located at the afterbody of bunching pipe one, be provided with stator in preceding pipeline, stator is near impeller, impeller rotates under the driving effect of wind-force, the generating of driving generator.

Its further technological scheme is:

Be provided with and let out air port along circumference on the tube wall of described bunching pipe one, the described air port of letting out is provided with wind discharging door, and described wind discharging door is used to open or close the described air port of letting out.

The forward and backward both sides of described impeller are respectively equipped with Windshield, rear wind scooper.

Described Windshield and rear wind scooper are cone structure, and the narrow end of Windshield is near intake grill, and the narrow end of rear wind scooper is near exhaust port.

Described wake flow pipe one and wake flow pipe two are expanding duct.

The periphery of described bunching pipe one intake grill is the streamline curved surface.

The periphery of the intake grill of described bunching pipe two is the streamline curved surface.

Technique effect of the present utility model:

The utility model is by two duct designs of preceding pipeline and rear pipeline, can reduce the pressure at the impeller blade back side, the wind speed of reinforcement preceding pipeline inside, increase the pressure difference at face of blade, the back side, increase the stressed of blade, thereby improve the output power of generator, improve generator efficiency; The peripheral employing of the intake grill of preceding pipeline airflow design, make the air-flow of preceding pipeline periphery can enter more swimmingly rear pipeline, makes rear pipeline middle part have higher wind speed, helps the preceding pipeline exhaust; The intake grill periphery of rear pipeline is taked airflow design equally, makes the air-flow of rear pipeline periphery can smooth and easyly flow through periphery, rear row of conduits air port, can help rear pipeline air exhaust water; Bunching pipe one and bunching Guan Erjun adopt the collapsible tube structure, therefore can assemble wind energy and promote wind speed, thereby improving wind energy utilization; Employing is Windshield and the rear wind scooper of cone structure, the wind in pipeline can be guided to as much as possible to the periphery of blade, further improves wind energy utilization; The setting of letting out air port and wind discharging door on the bunching pipe one of preceding pipeline, can make the wind speed in preceding pipeline maintain in the reasonable scope, and protection generator nonoverload, guarantee the continual and steady generating of generator; The afterbody of wake flow pipe one arranges through hole along circumference, when the air-flow of wake flow pipe one outside is swiftly flowing, can produce negative pressure in bore periphery, is conducive to drive the air-flow Accelerating Removal in wake flow pipe one.

The accompanying drawing explanation

Fig. 1 is that axle of the present utility model is surveyed view.

Fig. 2 is half sectional view of the present utility model.

Wherein: 1, preceding pipeline; 11, the bunching pipe one; 12, the wake flow pipe one; 2, rear pipeline; 21, the bunching pipe two; 22, the wake flow pipe two; 3, hole; 4, impeller; 5, stator; 6, support plate; 7, Windshield; 8, rear wind scooper; 9, wind discharging door; 10, central shaft; 20, support; 30, generator.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described.

See Fig. 1, Fig. 2, before the utility model comprises, preceding pipeline 1 and rear pipeline 2 that rear socket arranges, rear pipeline 2 is socketed in the outside of preceding pipeline 1, pass through support plate 6 fixed supports between preceding pipeline 1 and rear pipeline 2, preceding pipeline 1 is with bunching pipe 1 and wake flow pipe 1, rear pipeline 2 is with bunching pipe 2 21 and wake flow pipe 2 22, leave axial distance between the intake grill of the intake grill of bunching pipe 1 and bunching pipe 2 21, and the intake grill of bunching pipe 1 is positioned at the place ahead of bunching pipe 2 21, wake flow pipe 1 is near the afterbody of bunching pipe 2 21, the afterbody of wake flow pipe 1 is provided with through hole 3 along periphery, impeller 4 is located at the afterbody of bunching pipe 1, be provided with stator 5 in preceding pipeline 1, stator 5 is near impeller 4, impeller 4 rotates under the driving effect of wind-force, drive generator 30 generatings.

Further; when the wind speed of the wind comes from is excessive; for the wind speed in preceding pipeline 1 is maintained in the reasonable scope; making bunching pipe one 11 interior air-flows be unlikely to vortex is blocked in pipeline; to guarantee to protect generator 30 nonoverloads; be provided with and let out air port along circumference on the tube wall of bunching pipe 1, the described air port of letting out is provided with wind discharging door 9, and wind discharging door 9 is used to open or close the described air port of letting out.

In order to make the wind energy entered in bunching pipe 1 blow to as much as possible impeller 4, be respectively equipped with Windshield 7, rear wind scooper 8 in the forward and backward both sides of impeller 4, and Windshield 7 and rear wind scooper 8 are cone structure, the narrow end of Windshield 7 is near intake grill, the narrow end of rear wind scooper 8 is near exhaust port, and Windshield 7, rear wind scooper 8 are fixedly supported on the inwall of preceding pipeline 1 by stator 5 respectively.

For the air-flow that makes bunching pipe one 11 outsides enters in bunching pipe 2 21 more swimmingly, the periphery of bunching pipe one 11 intake grills is the streamline curved design, similarly, the periphery of the intake grill of bunching pipe 2 21 is the streamline curved design, can, so that the air-flow of bunching pipe 2 21 peripheries can smooth and easyly flow through the exhaust port periphery of wake flow pipe 2 22, help thus 2 22 exhausts of wake flow pipe; After air-flow is slowed down, discharge smoothly, wake flow pipe 1 and wake flow pipe 2 22 are expanding duct.

Generator 30 in preceding pipeline 1 interior setting in the utility model can be the various ways such as traditional electric rotating machine, directly driving type linear electric motor, external rotor electric machine, Fig. 2 is one of embodiment of the present utility model, be that generator 30 adopts outer rotor generator, described outer rotor generator is fixedly supported in preceding pipeline 1 by central shaft 10 and support 20, and this embodiment's the method for operation is as follows:

Wind enters from the intake grill of bunching pipe 1, wind speed is along with long-pending the dwindling gradually and enhancing gradually of the pipeline section of bunching pipe 1, under the guiding of Windshield 7, wind speed further increases, and after stator 4 is adjusted direction, impact the blade of impeller 4, thereby concentrated wind energy is converted to the kinetic energy of blade, the external rotor driven in outer rotor generator by impeller 4 rotates, external rotor and internal stator produce relative movement, make generator 30 generatings, lose the wind of most of energy under the wind-guiding effect of rear wind scooper 8, the wake flow pipe 1 through enlarging is gradually discharged, the wind in the intake grill outside of bunching pipe 1 enters in bunching pipe 2 21 from the intake grill of bunching pipe 2 21, air-flow in the pipeline of bunching pipe 2 21 after speedup is just in time in the outlet circumferential flux mistake of wake flow pipe 1, and the air-flow in the outlet periphery of wake flow pipe 1 has higher flow velocity, thereby further reduce the pressure in wake flow pipe one 12 outlet ports, through hole 3 peripheries at wake flow pipe one 12 afterbodys form negative pressure, due to the air-flow velocity of the outlet periphery at wake flow pipe 1 wind speed higher than the outlet port of wake flow pipe 1, therefore can drive the air-flow Accelerating Removal at wake flow pipe one 12 exhaust port places, after the air-flow that wake flow pipe 1 is discharged and the air-flow of bunching pipe 2 21 afterbodys gather, wake flow pipe 2 22 through enlarging is gradually discharged, the flow direction of wind is as shown in the direction of arrow in Fig. 2.

Be provided with and let out air port along circumference on the tube wall of bunching pipe 1, and control and let out opening of air port by wind discharging door 9 is set, close, opening of wind discharging door 9, close and can realize by mechanical mechanisms such as hinges, when outside wind speed is excessive, detect and send signal by control system, thereby outwards opening to open, control wind discharging door 9 lets out air port, by letting out the effect in air port, by preceding pipeline 1, rear pipeline 2 is communicated with, thereby the excessive pressure in preceding pipeline 1 is let out to rear pipeline 2, thereby the wind speed in preceding pipeline 1 is maintained in the reasonable scope, protection generator 30 nonoverloads, guarantee the continual and steady generating of generator 30.

The utility model is by two duct designs of preceding pipeline 1 and rear pipeline 2, can reduce the pressure of impeller 4 vacuum side of blades, thereby increase the pressure difference at face of blade, the back side, increase the stressed of blade, thereby improve the output power of wind energy utilization, raising generator, improve generator efficiency; The utility model coordinates the yaw control device operation, according to wind direction, by yaw control device, is controlled, and makes the intake grill of preceding pipeline 1 aim at wind direction, with capturing wind energy to greatest extent.

Above description is to explanation of the present utility model, is not the restriction to model utility, and the utility model limited range, referring to claim, within protection domain of the present utility model, can be done any type of modification.

Claims

1. a two duct axial flow wind-power generating system, it is characterized in that: before comprising, preceding pipeline (1) and rear pipeline (2) that rear socket arranges, rear pipeline (2) is socketed in the outside of preceding pipeline (1), pass through support plate (6) fixed support between preceding pipeline (1) and rear pipeline (2), preceding pipeline (1) is with bunching pipe one (11) and wake flow pipe one (12), rear pipeline (2) is with bunching pipe two (21) and wake flow pipe two (22), leave axial distance between the intake grill of the intake grill of bunching pipe one (11) and bunching pipe two (21), and the intake grill of bunching pipe one (11) is positioned at the place ahead of bunching pipe two (21), wake flow pipe one (12) is near the afterbody of bunching pipe two (21), the afterbody of wake flow pipe one (12) is provided with through hole (3) along periphery, impeller (4) is located at the afterbody of bunching pipe one (11), be provided with stator (5) in preceding pipeline (1), stator (5) is near impeller (4), impeller (4) rotates under the driving effect of wind-force, drive generator (30) generating.

2. by a kind of pair of duct axial flow wind-power generating system claimed in claim 1, it is characterized in that: on the tube wall of described bunching pipe one (11), along circumference, be provided with and let out air port, the described air port of letting out is provided with wind discharging door (9), and described wind discharging door (9) is used to open or close the described air port of letting out.

3. by a kind of pair of duct axial flow wind-power generating system claimed in claim 2, it is characterized in that: the forward and backward both sides of described impeller (4) are respectively equipped with Windshield (7), rear wind scooper (8).

4. by a kind of pair of duct axial flow wind-power generating system claimed in claim 3, it is characterized in that: described Windshield (7) and rear wind scooper (8) are cone structure, the narrow end of Windshield (7) is near intake grill, and the narrow end of rear wind scooper (8) is near exhaust port.

5. by claim 1 or 2 or 4 described a kind of pair of duct axial flow wind-power generating systems, it is characterized in that: described wake flow pipe one (12) and wake flow pipe two (22) are expanding duct.

6. by claim 1 or 2 or 4 described a kind of pair of duct axial flow wind-power generating systems, it is characterized in that: the periphery of described bunching pipe one (11) intake grill is the streamline curved surface.

7. by claim 1 or 2 or 4 described a kind of pair of duct axial flow wind-power generating systems, it is characterized in that: the periphery of the intake grill of described bunching pipe two (21) is the streamline curved surface.