DE19840352A1 - Under-pressure wind power plant - Google Patents

Abstract

An under-pressure wind power plant has a correspondingly shaped head part turning in the wind direction automatically by wind force without mechanical influences and generating an under-pressure in the part facing away from the wind. A turbine is mounted in the tower part with the narrowest diameter and it is set into motion by the air draught generated by the under-pressure, by wind or warm air current. This turbine is connected by a shaft to a two-part generator in the machine room. The generator is divided into two sections. The smaller and less power-capable part runs in light winds and the larger and more power-capable part is automatically coupled with strong winds.

Description

Wind power towers with transverse to the wind direction are known arranged propeller (rotor) drives.

The main disadvantages of these designs:

• 1. Rotors have a slow start-up phase the larger the diameter, the more.
• 2. Wind towers are subject to significant wind pressure set, which generates the extremely high bending moments be taken up by the tower construction have to; the higher the tower and the larger the through knife the rotor, the more complex the tower cone structure.
• 3. Since the performance of such a wind turbine from depends on the tower height and the rotor diameter, limits are quickly reached where overdimensioned nale mast structures are required to to record the wind pressures.

Especially when used in the sea or near the sea he must occasionally be fair to the wind in hurricane strength be net, so that if security is adhered to suggest an economically sensible relation cost / performance is no longer given.

• 4. As a result of the inertia of the start and movement Rotor versions - especially with increasing diameters weak winds can hardly be converted into energy.

In particular, utilization is purely thermal Updrafts not possible.

The invention takes these disadvantages into account.

The vacuum wind turbine presented here sees optimal use of both strong, weak and thermal winds caused by suction.  

Through extensive use of lightweight components - e.g. B. the carbon fiber known from aircraft construction the smallest possible sides, even in large construction heights press so that the design effort of the tower keeps within limits.

The shape of the head part ( 1 ) of the system ent creates a suction behind the opening in the opposite wind direction, which increases the stronger the wind.

This construction not only creates suction by wind, but also by temperature differences between below and above; these occur in particular the hot regions of the world; since the sub pressure tower due to the lightweight construction to great heights lets build, are the occurring thermal differences de large enough to provide sufficient suction to operate to deliver the turbine.

Usually there is a wind movement at higher altitudes, which further enhances turbine performance.

Air is drawn in through the openings in the lower part of the tower ( 5 ) in the direction of the negative pressure head part; In the taper of the tower cross-section, where the maximum air acceleration occurs, there is a turbine ( 3 ) which is rotated by the air flow.

The shape and arrangement of the turbine fins ( Fig. 2 + 3) so that on the one hand maximum utilization of the air flow is guaranteed, on the other hand, an air build-up cannot occur.

The turbine is connected by a drive shaft ( 7 ) to the two-part power generator ( 6 ) located in the lower part.

The generator consists of two parts: Part I speaks riding in light wind; at higher speeds, auto matically part II coupled so that the generator then to full power delivery comes.

Both the head part that can be turned in the wind direction with the Vacuum opening as well as the turbine and the Ver  with diagonally downward facing panels that the penetration of snow or rain in strong wind prevent, nevertheless allow sufficient air entry.  

Reference list Vacuum wind power tower system vacuum part rotatable in the wind direction

1

Vacuum part

2nd

Roller bearing slewing ring

Main tower

3rd

turbine

4th

Turbine bearings

5

Wind vents with shutters

6

Machine and operating rooms with 2-part light (I) / strong wind (II) generator gate

7

Drive shaft.

foundation

Fig.

1 vacuum part, rear view

Fig.

2 turbine blades

Fig.

3 turbine, top view.

Claims (7)

1. Vacuum wind turbine characterized in that a correspondingly shaped, by wind power automatically - without mechanical influences se - rotating head part in the windward part generates a negative pressure. 2. That in the tower part with the narrowest diameter a turbine is mounted through which by the negative pressure - through wind or thermals - he generated draft is rotated. 3. That this turbine through a shaft with a two-part generator in the engine room that is. 4. That the generator is divided into two sections is, the smaller and less powerful Part I starts in light winds, the larger one and more powerful part II in strong wind auto is matically coupled to full power. 5. That the air intakes in the lower part of the tower with Apertures are provided, the unhindered air allow supply, but the penetration of Re or prevent snow. 6. That all non-load-bearing parts made of lightweight material are, preferably made of carbon fiber material. 7. That the fins of the wind turbine are shaped that they absorb the air flow so that a maximum conversion into rotation takes place, however without that an undesirable air jam occurs.