ES2387433A1 - Method of assembly of magnets in generators and engines of eolic turbines and consequent assembly of magnets. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Method of assembling magnets (5) in generators and motors of wind turbines and consequent assembly of magnets (5) comprising the placement (1) of magnets (5), separated from each other by means of spacers (6), on a belt (7) flexible flat for its placement on the surface of the rotor or generator of the wind turbine and assembly equipment of said magnets and spacers on said belt. (Machine-translation by Google Translate, not legally binding)

Description

Magnet assembly method in wind turbine generators and motors and consequent magnet assembly

5 FIELD OF THE INVENTION

The

Present application make reference to the assembly Y

placement

from magnets for generators Y engines from

turbines

wind power

10

BACKGROUND

FROM THE INVENTION

Wind turbines transform wind kinetic energy into mechanical energy, which eventually becomes

15 electricity The constant increase in demand in relation to the power levels supplied, makes it necessary to have a greater number of wind turbine components, which usually require complicated and expensive manufacturing methods.

Conventional assembly or assembly methods are based on mounting the magnets directly on rotors or stators. The mounting posts place the magnets one by one, or, little by little, in small groups.

2 5 The axes of the rotor or the supports of the magnets of the stators normally have a cross-section, circular or curved. Generally, the individual assembly of magnets on shafts that have a curved surface, requires specialized jobs and many

30 hours of work This causes the efficiency, in terms of time and mounting capacity, to be low.

JP-2 O O 7-02 87 2 5 shows a series of magnets attached to a surface and transformed into annular shapes 35 for domestic use and small equipment.

US-82-7145271 describes the assembly of magnets in linear motors. A set of magnets is formed on a flat plate.

The prior art describes the union of magnets in rotors. Bonding resins and other materials will be taken into account according to their magnetic properties.

In

the technique correspondent previous, no exist

indications

specific about from how increase the

mechanical strength

of the assembled set.

On the other hand, the existing technique also takes into account the geometric placement in linear motors, including ways to concentrate the magnetic flux. However, the general training in linear motors does not include any type of curved or circular shape.

For this reason, conventional manufacturing methods are inefficient, slow, expensive and inappropriate.

One of the objectives of the present invention is to reduce or improve time and assembly work, as well as reduce the corresponding costs.

Another objective of the present invention is to present a simple assembly and installation method, capable of making specialized jobs unnecessary and, thus, being able to increase the assembly capacity.

In addition, the present invention also intends to make available a method that increases the suitability and precision of the mounted magnets. Regular placement of magnet units is important for future electromagnetic capacity in rotors and stators.

SUMMARY OF THE INVENTION

The present invention solves at least one of the objectives or problems of the prior art. The present invention includes a method of assembling magnets for wind turbine generators or engines, which contains the steps to achieve a belt with sufficient flexibility to adapt to the surface of a rotor or stator of any motor, or of the generator of a wind turbine; making at least a part of said tape more flat; placing at least two magnet units on a part of said tape; mounting said magnet units on the tape; and placing and mounting at least one spacer unit on the belt, between the magnet units already mounted, thus filling the space between two

magnets

consecutive for get a provision

mechanics

stable, to the hour from to adapt bliss headband (7) in

the

surface of a rotor or stator

The tape should preferably be flat. The tape in question should preferably be made of a magnetic material, e.g. ex. steel. The tape may have holes that decrease the weight of the anchors and / or may increase the efficiency of the magnetic flux.

Magnet holders secure or secure magnet units to metal tape. It is preferable that the tape supports are anchors. It is understood that these anchors are cartridges or housings where the magnets are inserted. These anchors can change shape to fit the shape and size of the magnet.

It is preferable that the assembly method includes the magnetization of the mounted magnets once the aforementioned space units have been introduced, since the magnet units are made of magnetizable materials.

The advantage that the assembly method includes a step in which the tape is cut to the anchor is to be able to obtain a pre-assembled magnetic tape (CMP), which has the appropriate length to place it on the surface around the axis of a rotor or stator of the generator of a wind turbine.

In the assembly method you can also determine the appropriate length to place the belt around the perimeter of the axis of a rotor or stator of the generator of a wind turbine. In addition, the assembly method also allows you to place the pre-assembled magnetic tape

(CMP) on the surface of a rotor or stator of the generator of a wind turbine, and fix said pre-assembled magnetic tape (CMP) on the corresponding surface of the rotor or stator of the motor or generator. The pre-assembled magnetic tape (CMP) can be fixed to the surface of a rotor or stator of the engine or generator of a wind turbine by means of the bonding, welding or bolting technique.

In the best case, in the assembly phase of the magnet units (6), a step would be included in which the length of said magnet units (6) is rearranged orthogonally to the longitudinal direction of the tape

(7) •

With another type of application, in the assembly phase of the magnet units (6), a step would be included in which the length of said magnet units (6) is rearranged in parallel to the longitudinal direction of the tape (7 )

Additionally, the assembly method may include the reorganization of the longitudinal direction of the magnet units (6) at an angle between 5 and 4 O degrees

in reference to the longitudinal direction of the mentioned

tape (7).

The present invention also includes a magnet assembly equipment for wind turbine generators or engines, consisting of a shaping unit

(0) to accommodate a tape (7) and extend at least part of said tape (7) in a substantially flatter arrangement; a power unit (1) for arranging and mounting at least two magnet units (5) on said tape

(7); a mounting unit (2) for mounting and fixing at least one spacer unit (6) on the belt (7) between the mounted magnet units (5), filling the space between two consecutive magnets, to achieve a stable mechanical placement to when arranging said belt (7) on the surface of the rotor or stator.

The assembly equipment may include a magnetizing unit (3) placed after the mounting unit (2), so that the effect of a field is achieved

very uniform magnetic on each magnet (5)

It is recommended that the assembly equipment be composed of a cutting unit (4) to cut the tape

(7) in width, in such a way that a pre-assembled magnetic tape (CMP) is obtained that has the appropriate length for its subsequent arrangement on the surface around the axis of a rotor or stator of the generator of a wind turbine.

FIGURES

Figure 1 shows the recommended procedure for the manufacture of magnets for wind turbine generators or rotors.

Figure 2 shows a flat belt with mounted magnet units and their mounting arrangement on the cylinders of rotors or stators.

Figure 3 shows the preassembly of the magnet units preassembled on the tape.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Figure 1 shows a first embodiment of the present invention. Most recommended, a coil with a thin metal tape (7) takes the metal tape to a forming unit (0). The tape must be completely

extended,

for become in a surface

completely

flat. Usually, bliss headband will have a

width

default The plus recommendable is that the

headband

be deployment to the long.

It is also recommended that a series of anchors be placed on the belt. It will be cartridges or housings to hold or fix the magnets. These anchors can stick on the tape.

A feeding unit (1) will mount the magnet units (5) on the metal tape (7), fixing or assembling them to the anchors of the tape.

The assembly unit (2) will mount the spacer units between the magnets (5) by filling the space between two consecutive magnets, so that a stable positioning is achieved. The spacers can be fixed or attached to the tape and add stability from at least two sides, since each magnet has at least two attached spacers (6).

It is preferable that said spacers (6) are manufactured

in deformable plastic materials that withstand any irregular distribution or manufacturing tolerance of the magnets (5).

The forming phase expands the supports or assemblies placed on the belt. It is recommended that the feeding unit (1) of magnets to the tape be placed after the forming unit (0) The feeding process, feeding unit (A), can be based on manual feeding or feeding units automatic It is preferable that non-magnetized units are inserted into the feed unit (A) and mounted on the supports, eg anchors, of the belt. The most advisable thing is that it is a mounting unit that fixes the magnets on the anchors of the tape.

The mounted spacers favor a regular and precise arrangement of the units in the belt, as well as greater stability. In this way, an irregular distribution of the units is avoided, as well as unwanted deviations and other irregularities. The spacers can be added through the feeder (B)

or register manually.

A magnetizing unit (3) will magnetize the mounted magnet units (5) making them permanent magnets. In this way, a uniform magnetization of each magnet unit (5) 'is achieved, which reverts to a better magnetic behavior of the motor or generator.

This unit will not be necessary, in case the magnets are already mounted in their magnetized state, p. ex. when they are already mounted as permanent magnets.

Next, a cutting unit (4) can cut the desired length of the endless metal belt. The length

This belt can correspond to the curved surface of the rotor or stator, this being very beneficial. The length can also correspond to the internal or external perimeter of a rotor or stator. In this case, the

5 tape will cover the entire perimeter of said rotor or stator.

In another of the applications, the cutting unit (4) is placed before the magnetizing unit (3). Alternatively, the cutting unit (4) can be part of

10 a separate unit or a different job.

Once the magnets have been preassembled on the metal tape, the process can continue with the assembly of the preassembled tape on a suitable rotor or stator surface 15. Images 2 and 3 exemplify this process. The method may include a phase in which the belt is bent over the surface of the rotor (9), followed by another phase in which the unit is fixed in the rotor (9), either by gluing, welding, bolting or any another method

2 o fixing. The rotor or stator defines a main axis, which usually corresponds to the axis of rotation of the rotor. Said main axis can also be called the rotor rotation axis.

25 As we have already mentioned, the preassembled magnetic tape (CMP) normally has a predetermined width and length. The cutting process will limit the length of the preassembled magnetic tape (CMP).

30 It is preferable that the magnets themselves are rectangular. In any case, its shape will be defined by the width and length of the magnet.

3 5 In the preassembly process e, the magnets can be placed in such a way that their longitudinal direction

run orthogonal to the longitudinal direction of the preassembled magnetic tape (CMP). In this case, the subsequent assembly process of the pre-assembled magnetic tape (CMP) on the rotors or stators, is usually performed

5 bending the longitudinal direction orthogonally to the main axis of the rotor (9) or stator.

In addition, by longitudinally bending the belt on the surface of the rotor shaft, the belt may cover the entire perimeter of the cross-section of the rotor shaft.

As an alternative in the preassembly process, the magnets can be placed in such a way that the longitudinal direction thereof runs parallel to the longitudinal direction of the preassembled magnetic tape (CMP). In this case, the subsequent assembly process of the pre-assembled magnetic tape (CMP) on the rotors or stators, is usually done by folding the longitudinal direction of the tape parallel to the main axis of the

2 O rotor or stator. The belt will be fixed in parallel to the main axis of the rotor.

In addition, the preassembled magnetic tape (CMP) can be mounted in a series of segments around the

25 rotor or stator surface. Typically, such placement is divided into four segments, each covering 90 degrees of the rotor or stator surface.

3 O In another of the applications, the pre-assembly of the magnets can be carried out in a non-orthogonal manner or not parallel to the length of the metal tape. The angles must have an opening between 5 and 40 degrees.

Claims (10)

1. A method of assembling magnets for generators or

engines

from turbines wind power that presents the following

points:

-presenta

a headband (7) with the flexibility enough

to place it on the surface of a rotor (9) or stator of an engine or generator in wind turbines; characterized by -the stretching of at least a part of said tape (7) so that it is completely flat, -the placement (1) of at least two magnet units (5) in at least a part of said tape (7), -the assembly of both magnet units (5) on the tape (7), -the placement and assembly of at least one spacer unit (6) on the belt (7), between the magnet units already mounted (5), thus filling the space between two consecutive magnets to achieve an arrangement stable mechanics, when adapting said belt (7) on the surface of a rotor or stator. 2. A method of assembling magnets according to the first claim 1 characterized by an additional step, -the magnetized of said assembled magnet units (5) once the aforementioned space units (6) have been assembled, said magnet units (5) being made of magnetizable materials. 3. A method of assembling magnets contained in the first claim, characterized by adding a step in which the tape (7) is cut in width, in order to obtain a pre-assembled magnetic tape (CMP), which has the appropriate length for place it on the surface around the axis of a rotor or stator of the generator of a wind turbine. 4. A method of assembling magnets contained in the

claim

3, characterized why the length

adequate

for place the headband in the surface be

5 corresponds

with all he perimeter of the axis from a rotor or

stator

of the generator from a turbine wind.

5. An assembly method corresponding to claim 3 further characterized by 10 -the placement of the pre-assembled magnetic tape (CMP) on the surface of a rotor or stator of a motor or generator and -the fixing of the pre-mounted magnetic tape (CMP) on the surface of a rotor or stator of a motor or 15 generator of a wind turbine. 6. An assembly method contained in claim 5, characterized in that the fixing of the pre-assembled magnetic tape (CMP) on the surface of a rotor or stator 20 of an engine or generator of a wind turbine, is achieved by gluing, welding, bolting or other fixing methods. 7. An assembly method according to the first claim, characterized in that the assembly phase 2 5 of the magnet units (5) include the placement of the longitudinal direction of said magnet units (5) orthogonal to the longitudinal direction of the tape (7). 8. An assembly method according to the first Claim, characterized in that the assembly phase of the magnet units (5) includes the placement of the longitudinal direction of said magnet units (5) in parallel to the longitudinal direction of the tape (7) 35 9. An assembly method according to the first claim, characterized in that it includes placement of the longitudinal direction of the magnet units (5) at an angle between 5 and 40 degrees in reference to the longitudinal direction of said tape (7). 1 O. A magnet assembly equipment for wind turbine generators or engines that has the following points:

-

a shaping unit (0) that receives the tape (7) and extends at least a part of said tape (7) to

achieve a substantially flatter layout; characterized by having -a power unit (1) to place and mount at least two magnet units (5) on said tape (7), -a mounting unit (2) to place and fix at least one spacer unit ( 6) on the tape (7), between the magnet units already mounted (5), thus filling the space between two consecutive magnets to achieve a stable mechanical arrangement, when adapting said tape (7) on the surface of a rotor or stator.

eleven.

A kit for assembling lmanes contained in claim 10, characterized in that it comprises -a magnet assembly (3) placed behind the assembly unit (2)

12.

A magnet assembly equipment contained in claim 10, characterized in that it further comprises - a cutting unit (4) for cutting the tape (7) in width, such that a pre-assembled magnetic tape (CMP) is obtained that presents the appropriate length for its subsequent arrangement on the surface around the axis of a rotor or stator of the generator of a wind turbine.