Rotor blade and wind-driven power plant with rotor
FIELD: power engineering.
SUBSTANCE: inventions relate to wind-power engineering and can be used for conversion of wind power. The rotor blade (200) consists of a body (206) with aerodynamic structure (204) with a pressure side (204.2) and suction side (204.1), base on the first end of the body (206) and tip (100) on the second end of the body, besides, for connection with the tip (100) the bode (206) has the second components of the connecting mechanism, which contain mating with the first guides (110) of the tip (100) the second guides (210), and also the second blocking devices (220) interacting with the first blocking devices (120) of the tip (100). The tip (100) of the rotor blade (200) is designed as an independent detail, connected with the blade (200), and has the first connecting surface (102), facing towards the connected blade. To make the connection with the blade (200) on the connecting surface (102) the first guides (110) with the direction (FR) of input and first blocking devices (120) are provisioned as the first components of the connecting mechanism for fastening the tip (100) on the blade (200).
EFFECT: inventions allow to simplify the unit operation and reliability of its transportation.
16 cl, 7 dwg
The invention relates to the removable tip of the rotor blades, in particular the rotor blades of the wind energy installation wind turbine, the rotor blades with the proposed tip and wind energy installation with the proposed rotor blades and their tips.
Rotor blades and their covers, in principle, known from the prior art. In particular, bent tips have long been used, for example, the blades of the rotors of the company Enercon. These well-known tips of the rotor blades, briefly called "elite", reduce inevitably arise when working on the end of the blade edge vortices and thereby undesirable emissions.
For technical information here should be referenced as an example in the publication DE 10319246 A1, DE 102006022279 A1 and DE 10300284.
Such bent tips exactly when transporting the rotor blade to the installation of wind turbines are very susceptible part of the blade. Also in the manufacture of blades, for example, during coating, to handle the blades with curved tips difficult.
The objective of the invention is to create a solution that could simplify the handling of the known rotor blades and/or their transportation and to avoid damage, especially damage sensitive tips.
This problem is solved through the your tip rotor blades under item 1 and rotor blades under item 9 of the formula. The preferred embodiments and improvements of the invention are given in the dependent clauses.
The proposed tip allows blades without him and, thus, easier to deal with them. In addition, these blades are less susceptible to damage during transport to the wind turbine. Finally, if the damage of the tip when its easy to replace on the spot.
The proposed tip of the rotor blades, in particular the rotor blades of wind turbines, made in the form of independent, connected with the blade parts. The tip has a first connecting surface directed to the connected blades, and contains guides and locking means as the first component of the connection mechanism for connection respectively performed by the blade.
To create a connection with the blade on the connecting surface provided by the first directing means with the direction of input that when you create the connection with the blade guide tip so that the connection becomes mechanically reliable, and locking means without damaging correctly positioned in relation to each other and can interact in a prescribed way. Therefore, to secure the tip on the blade is provided by the first locking means.
The first direction of the Commissioner, the means can consist, at least one set parallel to the direction of the input plug-in element. As plug-in elements on the tip may be provided, for example, pins or pins. Depending on size and material, the filler element may be hollow or solid.
First locking means on the handpiece may comprise at least one first connecting element, such as a pin, to create a preferably detachable connections with geometric circuit provided on the blades of the second locking means, i.e., at least one corresponding second connecting element. At least one first locking element can be located on the first connecting surface in the center and be parallel to the direction of insertion of the connecting surface.
If running with a journal as the first connecting element it is parallel to the direction of the input surface as a connecting surface, which may be performed, for example, at least one recess whose shape corresponds to the shape of the second coupling element on the blade.
On the first connecting element may be provided next, the first protective component, such as, preferably p is erpendicular the direction of insertion hole, for example boring. In the hole or via is a hole for fixing and it is preferable to actuate the connecting mechanism may include a safety element.
In regard to the form of the tip, it should be noted that it is preferably the connecting section having a pressure side and the suction side aerodynamic profile, which (part) contains the first components of the connecting mechanism. The tip has a further end section also having a pressure side and the suction side of the airfoil, where (site) tip preferably tapers and particularly preferably ends with the ending and especially preferably the edge.
The tip preferably be deflected. To do this, its tail section similar to winglet curves of the plane of the connecting section, i.e., unbent. In contrast to the known bearing planes of the plane to the tip of the winglet tip bent, however, towards the pressure side. In certain executions of the tail section of the tip can be rotated around the axis of sitting in his mid-plane at 4-8°, preferably at 4-6°, particularly preferably about 5°.
To ensure that in the event of a storm of a given designated stroke of lightning, so that the tip funk who was inerval as lightning, it is made preferably of metal. Because of its good electrical conductivity and a small specific gravity is particularly well suited aluminum. The tip is then a lightning arrestor and may send "caught" lightning in a suitable, integrated in the blade of the discharge means, so that due to this, effectively protect the wind turbine in the event of a lightning strike.
In addition, the tip can be made hollow. To consolidate and reduce the icing hollow tip can be heated, for example, to objectsa, warm air from the blade.
The proposed rotor blade, in particular for wind turbines, contains a body, which, as you know, is it between the front and rear edges of the airfoil to a pressure side and suction side.
At the first end of the body of the blade is its basis, and on the opposite the first end, the second end is declared the tip. Thus, the claimed blades offered the tip connected with the stated coupling mechanism. Therefore, to connect with a tip on the body of the blade should be the second components of the connecting mechanism, which contain the corresponding first guiding means of the tip of the second directing means and cooperating with the first connecting means of the second tip put the entrusted funds. Therefore, the proposed blade is designed for connection with the proposed tip.
Second directing means in accordance with the first guide means on the handpiece may comprise at least one set parallel to the direction of insertion of the second plug-in element. For example, the second directing means, if the first directing means made in the form of at least one of the pin or pins can be made in the form appropriate to it sleeve.
To create a preferably detachable connections with geometric circuit, at least one provided on the tip of the corresponding first locking means of the second locking means may include at least one second connecting element, for example a stopper.
If the second connecting member is a stopper, it can be attached to the body of the blade, for example, with the possibility of displacement or rotation. In addition, there may be provided a tension means which exert a movable stopper in the lock position.
The stopper has a locking surface which in the locked position oriented or lies parallel to the direction input. On the retaining surface may be provided, for example, the locking element, the shape catalogservlet the form of the first coupling element of the tip. Thus, between the first and second locking means in the locked position may be created in connection with geometric circuit. This connection can be loosened so that the tip could, if necessary, be removed from the body of the blade.
If the stopper, as already mentioned, voltage suitable tensioning means in the lock position, then when connecting the tip with the body of the blade connection with a positive locking between the locking means is created spontaneously.
To lock the locking mechanism in the stopper may be provided in the second protective component, such as a hole, perpendicular to the direction of insertion is preferably in the locked position, preferably the bore threaded for connection with at least one safety element.
Connection with geometric circuit created between the first and second locking means in the locked position, can be fixed with a safety element due to the fact that he interacts with the first and second safety components, hold, thus, the connection flush. For example, through the first hole in the pin tip in a coaxially oriented second threaded bore in the stopper can be vstall the n and with a given force applied to the screw as a safety element for fixing the connection. If the stopper tension of the tension means in the lock position, this automatically ensures that the holes for the safety element will be oriented coaxially with respect to each other.
The connecting mechanism can be powered also a safety element, for example, due to the fact that with its help move the second locking means, such as a stopper.
Of course, other variants of the fixing connection flush - this measure should suffice to capture only the location of the connecting elements relative to each other, i.e., to prevent accidental relative movement. In any case, the safety element must be calculated only on such a burden, so he could hold, i.e., to commit, first and second locking means in the locked position. The centrifugal force produced by the wind turbine, for example, the tip of the rotor blades, are perceived first and second locking means in the locked position and disposed in the blade, and then to the rotor hub.
Finally, it should be noted that, of course, you can also swap the location of the above-described components of the connecting mechanism between the body and tip of the blade.
If the blade is made advantage of the state of fiberglass, then it can be integrated conductive elements as the discharge means, i.e., lightning arresters, which then can be made, as already said metal tip, for example through the guide means, in good conductive contact, i.e. without appreciable resistance. In turn, the discharge means can be used for mechanical anchoring of the second component of the connecting mechanism in the body of the blade so as to occur during operation of the centrifugal force can reliably be entered by the tip in the blade.
The proposed tip and the blade preferably also provide a particularly simple replacement of the tip is damaged during operation, for example, the impact on it of the foreign body. Therefore, the invention also applies to wind turbines with a rotor comprising at least one proposed blade and at least one blade with the proposed tip.
Other preferred options and an example implementation of the invention are explained in more detail below with reference to the accompanying drawings. Used in the description of this example, the terms "left", "right", "above", "below" refer to the drawings in one orientation with the normally readable notation of the figures and the reference positions. In the drawings represent:
- Fig.1: General view of wind turbines running the ESD components;
- Fig.2: the blade to its main attributes;
- Fig.3A, a perspective view of a variant of the handpiece;
- Fig.3b: a top view of the handpiece of Fig.3A in the direction of the pressure side;
- Fig.4: perspective view of the components of the connecting mechanism on the blade, if you look inside it in the direction of the arrowhead;
- Fig.5: side view of the body of the blade tip;
- Fig.6: perspective view of the first and second locking means in the connection between the blade and the tip.
In Fig.1 shows a wind turbine 1 with a tower 2, built on the Foundation 3. On the top opposite the base 3 the end is the gondola 4 (machine room) with the rotor 5, consisting mainly of the hub 6 and placed the blades 7, 8, 9. The rotor 5 is connected with the generator inside the nacelle 4 for converting mechanical work into electrical energy. Gondola 4 mounted for rotation on the tower 2, basement 3 which provides the necessary stability.
In Fig.2 depicts separate the blade 10. It can be described mainly by the contour of the front 11 and rear 12 edges, and intermediate with the pressure side 13 and the suction side 14 aerodynamic profile 15. In the zone adjacent in assembled wind turbine with a hub end of the blade 10, called base 16, on the blade is the projection 17 for mechanical with the organisations with wheel hub. On the opposite base end of the blade 10 is its tip 18.
In Fig.3A, 3b depicts different kinds of handpiece 100, also called a tip. In Fig.3A depicts in perspective view the complete tip.
The handpiece 100 is self-contained and connected to the blade part. On the first connecting surface 102, pointing in the direction of the blade as partner connection, for reference when you create the connection with the blade, as the first guide means includes two hollow pin or pin 110. The location of the pins 110 causes the specified direction FR of the input when you create the connection with the blade.
Further, the tip 100 as a first locking means for securing the blades is provided by a pin 120 as the first coupling element. Pin 120 is used to create a preferably detachable connections with geometric circuit, at least one provided on the blade corresponding second connecting element.
First directing means and the first locking means are the first components of the connecting mechanism between the blade and the tip.
Pin 120 is located almost in the center of the first connecting surface 102 and is parallel to the direction FR of the input surface 122. In n the th performed, at least one recess 124 serving for the reception of the second connecting element on the blade. Therefore, the shape of the notches 124 perfectly matches the shape of the second connecting element on the blade of Fig.6.
The pin 120 is made perpendicular to the direction FR of the input hole as the first safety element in the form of bore 126, which may be inserted a safety element (Fig.6, POS. 130) for fixing and actuate the connecting mechanism between the tip 100 and the blade.
The tip 100 can be divided into the connecting section 104 having a pressure side 106.1 and the suction side 106.2 aerodynamic profile 106 and the tail section 108 having a pressure side and the suction side of the aerodynamic profile. On the coupling section 104 are the first components of the connecting mechanism.
In Fig.3, the tip 100 has an axis draping F. This is an imaginary axis, which, if the handpiece 100 to imagine is composed of individual, infinitesimally thin segments or disks, which are, in General, the shape of the original, aerodynamically efficient profile, should be planted all segments to obtain the desired shape of the blade.
The ending of Fig.3A shows as an example three such sections of the profile. Their position is the illustration which induces rotation of the profile ends around the axis draping F. It is shown that the rotation exceeds the practical value of degrees in order to illustrate in General it was possible to some extent to perceive the image in Fig.3A. Rotation may be, for example, 5°, which is a good compromise between reduced emissions and increased load.
The handpiece 100 is narrowed at the end 108 and ends up ending with edge 109. Relative to the plane of the mounting section 104 of the tail section 108 bent from the suction side 106.1 last, i.e., to the pressure side of 106.2. The tail section 108 of the handpiece 100 is bent relative to the first segment of the F1 axis draping F at an angle α. For the end portion 108 is depicted the second section of the F2 axis draping F. Between the two segments F1, F2 specified angle α, which describes the limb end portion 108. The angle α is preferably 129-90°.
In Fig.3b depicts a top view of the pressure side 106.2 of the handpiece of Fig. 3A.
In Fig.4 depicts a perspective view of the inside of the blade in the direction of its tip components of the connecting mechanism on the body of the blade. The components of the coupling mechanism from the body of the blade is contained in box 240, which is similar to tip is preferably made from metal, particularly preferably from aluminum. The insert 240 may be what the production is integrated into the body of the blade.
To enter effort arising on the coupling mechanism during operation of the blade, the insert 240 Sankaran by rods passing in the longitudinal direction far into the blade. The ideal image of the anchoring elements can also be made of electrically conductive material and, thereby, in addition to the anchoring options for the connection of the body and tip of the blade to perform as well as diverting funds function lightning conductor, in particular if made preferably from metal tip is to act as a lightning rod.
To connect with tip box 240 to the body 206 of the blade (Fig.5) provided by the second components of the connecting mechanism. This means that in box 240 are two sleeve 210 as the second guide means corresponding to the first guiding means 110 (Fig.5) tip 100 (Fig.5). Further provided for rotating the stopper 220 as a second coupling element to create a permanent connection with geometric circuit, at least one provided on the handpiece 100 corresponding pin 120 (Fig.5) as first coupling element.
Sleeve 210 as the second guide means are also parallel to the direction FR of the input and when you create the connection between the lug and the body of the blade to ensure Ecevit correct positioning of the first and second locking elements relative to each other for proper operation of the connecting mechanism.
The stopper 220 using, for example, screws 256 or fixed fingers connected with the installed rotatably in bearings 252, 254 axis and, thus, movably attached to the body 206 of the blade (Fig.5). In the locked position, the stopper 220 is parallel to the direction FR of the input locking surface 222. The stopper 220 is provided the locking element 224, the shape of which corresponds to the recess in the pin 120 of the tip as the first coupling element. To actuate the stopper 220 in box 240 made a hole 242 through which a safety element such as a screw 130 (Fig.6), may be inserted into engagement with the stopper thread. Thus, the stopper, as will be explained below with reference to Fig.6, can be optionally powered from the outside of the blade, at least, is fixed in the locked position.
In Fig.5 is a view at an angle from below in perspective shows the body 206 and the tip 100 of the blade. The body 206 has an aerodynamic profile 204 on the discharge side 204.2 and the intake side 204.1. On the opposite tip 100 the end of the body 206 is the base of the blade (not shown). Between the pins 110 as the first guide means on the handpiece 100 and bushings 210 as the respective second guide means on the body 206 by the dot-dash marked automatically the key emerging due to compulsory doing when you create the connection direction FR of the input. The following shows the optional seal 260, which is used to seal the connection at work. The seal 260 may be a separate element attached, but it can also be prelit to one or both of the connecting surfaces or completely disappear with proper execution of the flange surfaces.
In Fig.6 depicts a perspective view in which the first and second locking means to connect the blades and tip for explanations of their functions is shown divided.
The stopper 220 is attached to the axis 250 three screws 256. Since the axis 250 is installed in the blade for rotation, the stopper 220 is rotated around the axis 250. The stopper 220 is locking element 224, which in its form precisely fits the recess 124 in the trunnion 120 tip. This means that the notch 124 is made relevant stoparea element 224 forms and can, thereby, to create a connection with geometric circuit.
To cause the lock position, i.e. to bring it into action, the screw 130 as a safety feature, after fixing the tip with guide means on the body of the blade may be inserted in bore therein and in box 240 (Fig.4) in the body. The screw then passes first through hole 126 as the first safety component in the axle 120, after which uhodit Central bore 226 as a second safety component in stop element 224. The bore 226 is equipped with a suitable screw 130 threaded (not shown) so that rotation of the screw 130 leads to its screwing into the thread. When the screw by its head rests on the blade or box 240, its rotation causes rotation of the stopper 220 about the axis 250, i.e., the operation of the connecting mechanism. In the locked position the hole 226, mainly perpendicular to the direction FR of the input.
To cause spontaneous locked position, i.e. to bring it into action automatically, movably mounted stopper 220 may also be pre-tension of the tension means, for example on the axis 250 in position in accordance with the position of the lock. Then when you attach the tip of the stopper 220 deviates from the axle 120 and automatically returns to the locked position as soon as the locking element 224 will enter or fall into the notch 124 of the stud 120.
In the locked position the locking element 224 which fits in the recess 124 of the stud 120. Thus, all forces occurring during operation of the blade on the connection, is transmitted first and second locking means. The screw 130 as a safety feature, in contrast, should just fix the connection flush and protected especially from the cutting effort. Thus, the safety element 130 may be actuated coupling m is the mechanism through rotation of the stopper 220 and locking in the locked position.
1. The blade (200) of the rotor, in particular for a wind energy plant (1), containing
body (206) of the blade with an aerodynamic profile (204) having a pressure side (204.2) and the suction side (204.1),
the base of the blade at the first end of the body (206)
and on a second end opposite the first end, the tip (100) blades
moreover, the tip (100) is constructed as a separate, connected with the blade (200) parts, and has a first connecting surface (102) is directed to the attachment of the blade (200), and to create a connection with the blade (200) contains this connecting surface (102) of the first directing means (110) direction (FR) input when creating the connection, and the first locking means (120) as the first component connecting mechanism for securing the tip (100) on the blade (200), and
and to connect with a tip (100) body (206) has the second components of the connecting mechanism, which contain the corresponding first guiding means (110) tip (100) second directing means (210) and the second locking means (220) interacting with the first locking means (120) of the handpiece (100), and
with the first locking means (120) at the tip (100) contain at least one axle (120) as the first connecting ale the NTA to create a preferably detachable connections with geometric circuit, at least with the one provided on the blade (200) corresponding to the second connecting element, and
moreover, the second locking means (220) contain at least one stopper (220) as the second coupling element to create a preferably detachable connections with geometric circuit with at least one provided on the tip (100) corresponding to the second connecting element, and the stopper preferably is pre-strained in the lock position, and
provided by the tensioning means, which strain the movable stopper in the lock position.
2. The blade on p. 1, wherein the second directing means (210) contain at least one set parallel to the direction (FR) enter the second plug element, preferably suitable for pin or pin tip (100) nut (210).
3. The blade on p. 2, characterized in that the stopper (220) movably attached to the body (206) of the blade in the locked position is parallel to the direction (FR) enter the retaining surface (222).
4. The blade on one of the PP.1-3, characterized in that the stopper (220) contains the locking element (224) whose shape corresponds to the shape of the first coupling element tip (100).
5. The blade on one of the PP.1-3, characterized in that the stopper (220) has a prefer is Ino perpendicular to the direction (FR) input in the locked position the hole (226), preferably the threaded bore of at least one safety element (130), and attached to the body of the blade so that the safety element (130) due to the movement of the stopper (220) provides the actuation of the connecting mechanism and the fixing of the connecting mechanism in the locked position.
6. The blade on p. 4, characterized in that the stopper (220) is preferably perpendicular to the direction (FR) input in the locked position the hole (226), preferably a bore threaded at least one safety element (130), and attached to the body of the blade so that the safety element (130) due to the movement of the stopper (220) provides the actuation of the connecting mechanism and the fixing of the connecting mechanism in the locked position.
7. The blade on one of the PP.1-3 or 6, characterized in that it is made of fiberglass, with the blade (200) integrated conductive elements as lightning conductors, which are in electrically conductive contact, preferably through the guide means (110), preferably made from a metal tip (100).
8. The blade on p. 4, characterized in that it is made of fiberglass, with the blade (200) integrated conductive elements as Kalniete is a, which are in electrically conductive contact, preferably through the guide means (110), preferably made from a metal tip (100).
9. The blade on p. 5, characterized in that it is made of fiberglass, with the blade (200) integrated conductive elements as lightning conductors, which are in electrically conductive contact, preferably through the guide means (110), preferably made from a metal tip (100).
10. The blade on p. 1, wherein the first directing means (110) contain at least one set parallel to the direction (FR) input plug element, preferably a pin (110) or a pin.
11. The blade on p. 1, characterized in that the pin (120) is located on the first connecting surface (102) is preferably in the center and is parallel to the direction (FR) input connecting surface (122).
12. The blade on p. 11, characterized in that the connecting surface (122) of the axle (120) is made of at least one recess (124), the shape of which conforms to the shape of the second coupling element (222).
13. The blade on one of the PP.1, 11 or 12, characterized in that the first coupling element is preferably perpendicular to the direction (FR) input hole (126), preferably a bore, at merella one safety element (130) for fixing and preferably actuate the connecting mechanism.
14. The blade on p. 1, characterized in that the tip (100) has a connecting section (104) having a pressure side (106.1) and the suction side (106.2) aerodynamic profile (106), which are the first components of the connecting mechanism, and the tail section (108) having a pressure side and the suction side aerodynamic profile,
moreover, the tip (100) is preferably tapers at the end (108) and ends, particularly preferably, the edge (109), and
and the tail section (108) like winglet protrudes from the plane of the connecting section (104) in the direction of the pressure side and rotated, in particular, in his mid-plane at 4-8°, preferably 4-6°, particularly preferably about 5° relative to the axis of the draping of the tip (100).
15. The blade on p. 1, characterized in that the tip (100) is made of metal, in particular aluminum, and preferably be hollow.
16. Wind power installation (1) with a rotor comprising at least one blade on one of the PP.1-15.
SUBSTANCE: invention relates to electrical engineering and wind energetics. Rotor of the segmental electric generator includes shaft, hub, rim and magnetic cores in form of two angle connections of straps, one is inside the other one. The straps have fixtures for securing on the rim. Technical result is improvement of the generator efficiency upon minimisation of its price as the rotor is magnetically interacts with the stator via two air gaps: outside and inside, thus reducing magnetic dispersion. Additional electromotive force increasing is due to additional rotor elements only, at that the magnetic field source is the same.
EFFECT: use of strap elements increases produceability.
FIELD: power engineering.
SUBSTANCE: wind wheel of the segment type electric generator, containing a hub, blades with the stringers designed as a sailing fin assembly, according to the invention, has fastening of stringers to the rim connected to the hub by means of spokes which are designed as flat-topped brackets on vertical sides of which the pairwise cuts are made which contact to the rim. Flat-topped brackets are connected to the rim fasteners, and stringers are fixed on horizontal shelves of flat-topped brackets.
EFFECT: possibility of use of stringers of the blade both as structural elements and magnetic conductors of the segment generator that provides simplification and reduction in cost of the design due to the use of the sailing fin assembly.
FIELD: power industry.
SUBSTANCE: wind motor includes a horizontal shaft with a wheel with blades, which is installed on it. In addition, the wind wheel includes a conical air flow guide fixed on a wheel hub shell and an external shell. Blades of the second level are uniformly arranged on the external shell. Blades of the first level are attached to the wheel hub shell and to the conical guide. Generatrixes of blades of the first and the second levels are curved and have an ascending air flow attack angle.
EFFECT: improving efficiency.
FIELD: power engineering.
SUBSTANCE: vane blade of a rotor wind engine, formed by side surfaces of the streamlined profile, connected by links so that one of them has length from the front edge to the zone of its maximum thickness, and the other one is a fully stretched contour of the hollow wing, having inside the front edge a longitudinal cavity between these side surfaces. The blade is made in the form of a sectioned wing of alternating sequence of the above surfaces turned mutually by 180 degrees in the open streamlined profile. In the front part of the wing this profile is formed by two bent sheet surfaces fixed on a "П"-shaped central wing spar and a connecting angle of the front edge of the wing, and its open sections are formed by the third sheet surface with transverse cuts that do not reach its rear edge, and partially closed by transverse links - half-ribs. Half-ribs provide for through air link between open parts of the third sheet surface fixed on rear edges of two longitudinal sheet surfaces at the central wing spar.
EFFECT: invention increases efficiency of wind usage.
3 cl, 7 dwg
FIELD: power engineering.
SUBSTANCE: wind wheel comprises a hub with radially attached blades. Each blade comprises a groove for placement of a photoelectric generator in it. The groove is made at one side of the blade. Grooves may be made at each side of the blade.
EFFECT: invention expands functional capabilities of a wind wheel and makes it possible to use it as a single wind and solar power plant.
3 cl, 7 dwg
FIELD: power engineering.
SUBSTANCE: rotor-blade impeller of an electric generating device based on Magnus effect comprises a shaft, at least one rotor, blades and a ring of rotor rotation. The ring of rotor rotation is fixed on the body, is kinematically connected with the rotor to ensure rotor rotation around its own axis by means of rotor swinging on the ring edge. Blades are installed on the common shaft with the rotor and are a drive of this shaft.
EFFECT: simplified design of a unit, its higher capacity, reduced prime cost of its manufacturing, increased reliability and production of cheap power.
FIELD: power industry.
SUBSTANCE: windwheel blade includes tubular spar and sections into which a blade is divided along the span. Spar is made so that it is lowered from the blade outline. Sections include covers and ribs. Sections include connection profiles arranged between covers and flanges of spar and connection parts installed on webs of ribs, which are attached to the above profiles. Connection parts are attached by means of fasteners to spar webs. Adjacent sections are connected by means of connection straps to each other with possibility of mutual movement. Separation of blade into sections is made so that at least two ribs in the most loaded sections are connected by means of connection and fastening parts to spar. Connection profiles in them are disconnected from spar flanges. As for other ribs, connection parts and connection profiles are made and mounted so that a gap is formed between them and spar along webs and flanges by the value of spar deflections. Protective patches are installed on the spar in the zone of connection parts and connection profiles.
EFFECT: increasing the blade service life.
1 cl, 9 dwg
FIELD: power industry.
SUBSTANCE: rotor of segmental wind-driven electric generator includes rim, disc, hub and rotor elements. Rotor elements are made in the form of plates which are connected in the form of an angle and fixed on disc.
EFFECT: reducing the weight and dimensions of rotor of wind-driven electric generator at minimisation of its cost due to simplifying the manufacturing technology; providing high manufacturability and possibility of both classic design, and design in the form of magnetic flux modulator for inductor generator.
FIELD: power industry.
SUBSTANCE: in windwheel containing hub, spokes, rim, radial blades the rim is equipped with flexible solid tyre; at that, blades are made in the form of turbine blades and located on tyre surface along helical lines. In the cavity formed with horseshoe-shaped tyre and rim a pneumatic chamber is arranged.
EFFECT: windwheel is easy-to-manufacture, which enhances the possibility of its large-scale production.
2 cl, 3 dwg
FIELD: power industry.
SUBSTANCE: wind-driven electric power station includes rotor made in the form of disc with blades installed on it, made in the form of aerodynamic wings and located with a gap relative to rotor shaft which is mechanically connected to shaft of electric generator, fairing installed on shaft in front of rotor in direction of air flow and enveloping the gap between inner edges of blades and confusor arranged in front of rotor in flow direction. Blade edges are chamfered in the direction of shaft axis. Confusor is installed on peripheral parts of blade edges so that a gap with fairing is formed.
EFFECT: improved completeness of use of wind flow energy and simpler construction of rotary wind-driven electric power station.
3 cl, 3 dwg
FIELD: wind-power engineering.
SUBSTANCE: invention relates to rotors providing use of oncoming flow of air for generating of power. Proposed rotor of circular cellular design has central rod or hub on which converter or motor is installed, at least two tubular cylinders installed coaxially with central rod and great number of blades forming at least four parts passing between each two adjacent tubular cylinders connecting the cylinders to each other and forming tubes together with cylinders. Tubes are bent to helical line on their length around rotor and have section in form of trapezium whose parallel bases are sections of tubular cylinders, and side walls, parts passing along radius. Tubular cylinder of larger diameter can be provided with input widening in form of truncated cone, and at output, narrowing in form of truncated cone bell.
EFFECT: provision of effective utilization of oncoming flow energy.
3 cl, 6 dwg
FIELD: transportation, engines and pumps.
SUBSTANCE: propeller has the blades everyone of which incorporates an initial section of direct acinaciform and the final section of reverse acinaciform. In compliance with first version, the propeller incorporates three and more double-fastening blades the ends of which are linked by means of a ring packing. The second version proposes the propeller with two blades forming a Mobius surface. The blade swept area features an oval rotation shape elongated along the propeller axis. The blades can be made by bending a flat sheet material into coils. The two-blade propeller has its the blades made integral. The surface sections of every propeller located on the propeller rotation axis are developed relative to each other by 90 degrees. The blades are either interconnected directly, or by means of a ring packing, or on the drive shaft extension. The development of the propeller blades represents a flat integral unit made up of spiral-shape elements.
EFFECT: set of inventions simplifies manufacturing the propeller.
22 cl, 12 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to wind mill electric power generation and wind mill electric generators based on the Magnus effect can be used. The said generator incorporates a lengthwise shaft designed to transfer a rotary motion to the mechanism generating electric power, rotary cylinders arranged radially relative the said lengthwise shaft and drive motors to rotate the cylinders about their axes. Note here that interaction of rotary motion of each cylinder and wind initiate a lift caused by the Magnus effect that causes the rotation of the lengthwise shaft that, in its turn, triggers off the mechanism generating electric power. An appropriate means for creation of lift is arranged on the cylinders outer surfaces at a preset point to create a component of air flow, at least, parallel to the cylinder axis aligned along one direction of the cylinder peripheral outer surface from the lengthwise shaft or towards it.
EFFECT: efficient electric power generation with low and high wind speeds.
11 cl, 19 dwg
SUBSTANCE: inverted electromagnetic wind generator consists of hollow shaft, lead-out, single-layer three-phase winding, two end shields and metal drum fixed between end shields by means of outer flanges. Prismatic magnets are installed on inner surface of metal drum at equal distance. Prismatic magnets with longitudinal axis, which is parallel to axis of rotation, have radial degree of magnetisation N-S, the said prismatic magnets being fixed from both sides with retaining rings. Groove-free stator is placed inside metal drum and consists of cylindrical hub with central hole the aforesaid cylindrical hub being installed on hollow shaft in co-axial alignment. Cylindrical bundle is reeled on hub as metal strip installed edgewise. Single-layer three-phase winding is put above bundle. Winding ends are parallel to axis of rotation of wind generator. Guiding cylindrical bushings with circular hollows and circular guiding sections are installed in circumferential direction of groove-free stator at end surfaces. Lead-out is disposed inside hollow shaft to connect single-layer three-phase winding with lead-outs. Shaft is attached to end shield from the opposite side of hollow shaft outlet in its central part by means of flange connection.
EFFECT: electric energy supply to power grid at low rotation frequencies; high reliability and easiness in manufacture process.
3 cl, 5 dwg
FIELD: engines and pumps.
SUBSTANCE: invention is related to methods and facilities for transformation of energy of flows of different physical nature and may be used for transformation of wind or water flows energy. Method is realised by means of flow energy transformation into rotary motion of energy-transducing device, which comprises shaft oriented along medium flow and rotary energy-transducing element fixed in it and arranged in the form of, at least, one blade with fairing having aerodynamic profile symmetrical relative to its transverse plane and installed so that plane of symmetry of its cross section passes through shaft longitudinal axis. Blade is fixed to outlet end of fairing so that one of fairing side surfaces and external surface of blade create single aerodynamic surface, at that blade plane is shifted relative to shaft longitudinal axis. When energy-transducing device is placed in medium flow, pressure of differences is created relative to internal and external surfaces of blades.
EFFECT: pressure increase at internal surfaces of blades and rotation of energy-transducing device with simple design.
7 cl, 2 dwg
FIELD: power engineering.
SUBSTANCE: invention relates to the field of power engineering and can be used for producing electric energy. Wind motor contains a shaft to which is fastened a symmetric system of radial spokes of the shaft; a mobile bushing-pin is placed on the shaft, on which is fastened a symmetric system of radial spokes of the bushing-pin, similar to the spokes of the shaft, connected with a pin system of moving the bushing-pin along the shaft. Ends of the spokes of the shaft and the spokes of the bushing-pin are hinged and in pairs joined to each other through tangential kinematical power transmission mediums. On each of the specified spokes are stretched strips of easily compliant material, forming a sail vane-wing wind motor. The length of the tangential kinematical power transmission medium is such that, during the motion of the bushing-pin along the shaft, the angle of inclination of the tangential kinematical power transmission mediums to the axis of the shaft changes in a given range. Strips of the easily compliant material are made from elastic cloth.
EFFECT: possibility of regulating the angle of attack in the operating process of the wind motor, and also self-alignment of the wind motor to the wind.
2 cl, 1 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to power engineering and can be used in windmills. Windwheel has rotational axis complying with wind direction and comprises rigid carcass fitted with protruding vane axles inclined toward wind direction. Vanes are fitted on aforesaid axles asymmetrically so that the vane smaller part is always directed forward, while its larger part seats on leeward side. Note here that weights of vane both parts are equalised. Every vane is coupled with aforesaid carcass via torsion spring, and carcass front is closed by cone fairing with its side outer surface accommodating rigid vanes, cone base circumference being enveloped by a cylinder with openings arranged opposite every vane. One edge of aforesaid opening is aligned with vane edge, while opposite edge of the said opening seats in front, along the vane motion. Proposed windwheel can be used at winds varying from weak, i.e. 1m/s, to gale.
EFFECT: higher efficiency.
SUBSTANCE: invention relates to aircraft engineering, particularly to rotors. Proposed rotor comprises disk with blades. Proposed rotor represents a disk, which can be either bladed in sector sections of the disk or flexible with flexibility increasing from rotational axis to periphery, the disk oscillating and being attached unorthogonally to vertical or horizontal shaft.
EFFECT: simplified design.
5 cl, 3 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to wind power engineering, particularly to windmills with rotary cylinders exploiting Magnus effect. Proposed windmill comprises horizontal axis wind wheel and radially arranged cylinder-type Magnus rotors, drive of cylinders and electric generator. Every rotor comprises non-rotating root part and rotating tail part, and washer arranged on its extremity. Rotor rotating part represents s cylindrical part with truncated-cone end, cone base facing the cylinder and cone diametre exceeding cylinder diametre. Note here that cylinder and cone surfaces represent spiral ribs-augers with their turning towards cylinder rotation starting from cylinder root cross section till washer.
EFFECT: reduced inductive resistance allowing notable reduction in cylinder rotational speed and power consumption as compared to traditional windmills.
FIELD: power industry.
SUBSTANCE: two-blade windwheel made from sheet material is a solid cut from cylindrical tube as per the outline of the pattern applied to the tube along its generatrix and the symmetry axis of which coincides with gravity centre of windwheel. Windwheel can be made so that angle of decalage of each blade is made so that it decreases from the bottom to the blade end by narrowing the pattern ends. Blade can be covered with the material so that blade profile was similar to wing-shaped one; at that, filler can be introduced to the cavity of formed profile on concave side.
EFFECT: simple design of windwheel ensures reduction of production costs at simultaneous profile accuracy.
3 cl, 3 dwg