Self-vortex making and self-air exhausting wind turbine
A wind turbine and vortex technology, applied in the field of wind equipment, can solve problems such as low energy utilization rate, shaft abrasion, sand entry, etc., and achieve the effect of increasing energy utilization rate, fully utilizing space, and avoiding sand and sand abrasion.
Inactive Publication Date: 2014-12-10
李松
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Problems solved by technology
If the wind rudder is used for self-reversing, the equipment structure will be greatly complicated
[0004] 2. Energy utilization efficiency is very low
According to fluid mechanics, it can be seen that the efficiency limit of windmills is 59.3%, but there are still factors such as friction in practical applications; at present, the true efficiency of windmills is difficult to reach 40%.
[0005] 3. Its shaft is easily eroded by wind and sand
Because the shaft of the windmill is horizontal, it is easy for sand particles to enter, causing serious abrasion of the shaft
[0006] Although the current vertical axis wind turbines are free from the influence of wind direction, their energy utilization rate is lower than that of horizontal axis wind turbines.
Method used
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[0029] The specific implementation manner of the present invention is illustrated below by way of example.
[0030] The straight airflow blows to the wind turbine, and forms a vortex airflow around the rotor through the action of the wind guide vane (3). The vortex air pushes the blades (7) to move, thereby turning the rotor.
[0031] The airflow continuously pours into the cyclone hood, and the old airflow is continuously transmitted to the blades due to kinetic energy, and the speed is continuously reduced. Under the crowding of the new airflow, the old airflow is getting closer and closer to the rotating shaft (8), and the speed is getting smaller and smaller.
[0032] Straight air flow passes through the wind-clamping sheet (5) on the top of the hood, and forms an extremely high-speed airflow on the exhaust cavity (6) in the middle part of the top of the hood, where the pressure is very low. The low-velocity gas near the rotating shaft continuously gushes out of the exhau...
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The invention discloses a self-vortex making and self-air exhausting wind turbine, and belongs to the field of fluid mechanics. An existing mainstream wind turbine is a lift force type horizontal shaft wind turbine, namely a windmill, and the theoretic efficiency limit thereof is 59.3%; and the efficiency is generally not higher than 40% due to such factors as friction, so that the efficiency is low. In addition, a resistance type or lift force type vertical shaft wind turbine is lower in efficiency. The self-vortex making and self-air exhausting wind turbine aims to solve the problem of low efficiency in the existing wind turbine, and breaks through the efficiency limit. Most kinetic energy of a swirling airflow can be extracted out by using the characteristic of low speed near the center of the swirling airflow, and approximately static gas is pumped out by using an external high-speed airflow, so that the requirement of high efficiency is satisfied. The theoretic efficiency limit of the self-vortex making and self-air exhausting wind turbine is 100%. The efficiency can easily exceed 70% in consideration of such factors as friction. The self-vortex making and self-air exhausting wind turbine converts the wind energy into the mechanical energy with high efficiency for wind power generation.
Description
technical field [0001] The invention relates to a wind power device, which is a device for efficiently converting the kinetic energy of the wind into mechanical energy. in the field of fluid mechanics. Background technique [0002] At present, there are two kinds of wind turbines, horizontal axis and vertical axis, among which the horizontal axis wind turbines are lift-type, commonly known as windmills. Although horizontal axis wind turbines are widely used in the field of wind power generation, they still have the following deficiencies: [0003] 1. Affected by wind direction. During use, it is necessary to constantly adjust the direction of the windmill according to the wind direction, which is troublesome to use. If the wind rudder is used for self-reversing, the equipment structure will be greatly complicated. [0004] 2. Energy utilization efficiency is very low. According to fluid mechanics, it can be seen that the efficiency limit of windmills is 59.3%, but there...
Claims
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Login to View More IPC IPC(8): F03D1/00F03D1/04F03D1/06
CPCY02E10/72
Inventor 李松
Owner 李松