阅读说明：本技术 包括风力涡轮机的变压器箱和机舱的组件 (Assembly comprising a wind turbine transformer box and a nacelle ) 是由 J.甘格尔 F.赖特鲍尔 D.特里布 于 2018-12-06 设计创作，主要内容包括：本发明涉及一种包括布置在风力涡轮机的机舱中的变压器箱(1)的组件。变压器箱被设计成填充有气体或液体,以便冷却变压器的有源部分,并且所述有源部分被所述变压器箱以液密或气密的方式封闭。本发明的目的是便于将变压器箱用作机舱的钢构造的加固件或支承件,同时使用于变压器箱的附加材料费用尽可能地少。实现该目的在于,变压器箱(1)以这样的方式集成到机舱的机械支撑结构(7)中,使得变压器箱形成机舱的机械支撑结构的一部分,并且至少一个支承件(3)设置在变压器箱(1)的内部中,所述支承件连接变压器箱的相互相对的壁区域。(The invention relates to an assembly comprising a transformer tank (1) arranged in a nacelle of a wind turbine. The transformer tank is designed to be filled with gas or liquid in order to cool the active part of the transformer, and said active part is closed by said transformer tank in a liquid-tight or gas-tight manner. The object of the invention is to facilitate the use of the transformer tank as a reinforcement or support for the steel construction of the nacelle, while the additional material costs for the transformer tank are as low as possible. The object is achieved in that the transformer tank (1) is integrated into a mechanical support structure (7) of the nacelle in such a way that the transformer tank forms part of the mechanical support structure of the nacelle, and at least one bearing (3) is provided in the interior of the transformer tank (1), said bearing connecting mutually opposite wall regions of the transformer tank.)

1. An arrangement comprising a transformer tank (1) which is arranged in a nacelle of a wind turbine, wherein the transformer tank is embodied to be filled with gas or liquid in order to cool an active part of the transformer, wherein the active part is closed by the transformer tank in a liquid-tight or gas-tight manner, characterized in that the transformer tank (1) is inserted into a mechanical support structure (7) of the nacelle in such a way that it forms part of the mechanical support structure of the nacelle, and in that at least one bearing (3) is provided in the interior of the transformer tank (1), which connects mutually opposite wall regions of the transformer tank.

2. Device according to claim 1, characterized in that the mutually opposite wall regions are mutually opposite wall regions of mutually opposite side walls (2) or of surrounding side walls.

3. Device according to claim 1 or 2, characterized in that the support (3) is at least partially embodied as a straight beam.

4. The arrangement according to one of the preceding claims, characterized in that the at least two opposite wall areas of the transformer tank (1) are connected in a fixed manner to the mechanical support structure (7) of the nacelle.

5. The device according to one of the preceding claims, wherein the support (3) is connected to a wall of the transformer tank (1) at a point where the wall of the transformer tank (1) is connected to the mechanical support structure (7) of the nacelle.

6. Device according to one of the preceding claims, characterized in that at least a part of the support (3) is formed by the active part of the transformer.

7. The device according to claim 6, characterized in that a part of the support (3) is formed by a component of a pressed structure of the transformer core.

8. A device according to claim 6, characterised in that a part of the support (3) is formed by a component of a press structure for the winding.

Technical Field

The invention relates to an arrangement comprising a transformer tank arranged in a nacelle of a wind turbine, wherein the transformer tank is embodied to be filled with gas or liquid in order to cool an active part of the transformer, wherein the active part is closed by the transformer tank in a liquid-tight or gas-tight manner in an operational state of the transformer.

The arrangement according to the invention can be used in various types of transformers, in particular in liquid-filled transformers. The present invention generally relates to power transformers.

A transformer for use in a wind turbine comprises a transformer housing and an active part. The active part of the transformer comprises the windings and the transformer core of the transformer. Typically, the active part in a power transformer also comprises equipment specifying the position and/or shape of the transformer core and/or windings, such as a hold-down equipment.

Background

The wind turbine comprises a tower, a nacelle fastened to the tower such that it can rotate, and a rotor, wherein the nacelle carries the rotor, a drive train containing the wind turbine and an electrical mounting part of the wind turbine.

According to the prior art, a transformer associated with a wind turbine is located in the nacelle or the tower, see for example DE 202014004373U 1 in this respect.

In principle, the transformer tank of the transformer is used for cooling the active part of the transformer and as a container for the cooled liquid and/or gas. Previously in wind turbines, the transformer tank did not have any function of carrying other components of the wind turbine. Efforts are being made to use the transformer tank as a stiffening element in the mechanical structure of the nacelle. Such mechanical structures are typically of steel structural design.

Previous proposals have aimed at reinforcing the transformer tank itself, i.e. its walls, so that the transformer tank or its walls themselves are more stable, e.g. by reinforcing them, e.g. by designing them thicker than in transformers which do not have to assume a load-bearing function. However, this leads to an increase in the weight of the transformer tank, which however complicates e.g. the transport of the transformer to the nacelle.

Disclosure of Invention

It is therefore an object of the present invention to provide an arrangement comprising a transformer tank arranged in a nacelle of a wind turbine, which arrangement overcomes the disadvantages of the prior art and in particular makes it possible to use the transformer tank as a reinforcement or support for the steel structural design of the nacelle, while keeping the additional material costs of the transformer as low as possible.

According to the invention, this object is achieved by a winding arrangement as claimed in claim 1. The starting point is an arrangement comprising a transformer tank arranged in the nacelle of the wind turbine, wherein the transformer tank is embodied to be filled with gas or liquid in order to cool the active part of the transformer, wherein the active part is closed by the transformer tank in a liquid-tight or gas-tight manner. Against this background, it is provided that the transformer tank is inserted into the mechanical support structure of the nacelle in such a way that the transformer tank forms part of the mechanical support structure of the nacelle, and that at least one bearing is provided in the interior of the transformer tank, which connects mutually opposite wall regions of the transformer tank.

With one or more supports in the interior of the transformer tank, the rigidity of the transformer tank can be increased in a simple manner and with relatively little material expenditure, without the walls of the transformer tank having to be designed more robust.

The term "wall area of the transformer tank" includes limited wall areas such as the base, the cover and the respective side walls of the transformer tank. The transformer tank usually has a substantially cuboid-shaped configuration. In the operating state, the base and the cover are oriented parallel to the contact surfaces in the nacelle, wherein the (in particular four) side walls (or one side wall surrounding in the form of a jacket when the transformer tank is not embodied in the shape of a cuboid) are perpendicular to the contact surfaces. However, the wall region of the transformer tank can also be a region of the side wall in the case of a side wall which is surrounded in the form of a jacket.

It may thus be provided that the mutually opposite wall regions which are connected to one another by means of one or more supporting elements are mutually opposite wall regions of mutually opposite side walls or of a surrounding side wall. However, it is not excluded that a support is also provided between the base and the cover of the transformer tank.

An advantageous embodiment variant of the invention provides that the support is embodied at least partially, in particular with respect to its longitudinal extension, as a straight beam. For example, the support can be embodied wholly or partially as a profiled steel beam.

An advantageous embodiment variant of the invention consists in that at least two opposite wall regions of the transformer tank are connected in a fixed manner to the mechanical support structure of the nacelle.

In this case, it may be provided that the bearing is connected to the wall of the transformer tank at the point where the wall of the transformer tank is connected to the mechanical support structure of the nacelle.

The support can be produced with particularly little material expenditure if at least a part of the support is formed by the active part of the transformer. Thus, the structural components of the active part which are not mechanically connected to the transformer tank wall can be connected to additional connecting elements which then establish a connection to the wall of the transformer housing, wherein the components of the active part together with the additional connecting elements form a support. For example, the additional connecting elements can be embodied as steel beams.

In particular, it may be provided that a part of the support is formed by a component of a pressed construction of the transformer core. If the transformer core is constructed from separate sheets, these sheets are pressed together with end plates or end brackets that are interconnected by tensioning devices. These end plates or end brackets (e.g. profiled beams) may form part of the support according to the invention.

Alternatively or additionally, it can be provided that a part of the support is formed by a component of a press structure for the winding. In order to keep the windings in a defined position during transport and operation of the transformer, the windings are pressed together parallel to their winding axis using end plates or end brackets arranged in an opposing manner, which are connected to each other by tensioning devices. These end plates or end brackets (e.g. profiled beams) may form part of the support according to the invention.

When using components of existing press structures, this means that no additional supports (e.g. beams) need to be used, which themselves connect the walls of the transformer tank to opposite walls of the transformer tank, but it is sufficient if the components extend on both sides (e.g. by means of bracket portions) and these extensions are connected to the walls or wall areas of the transformer tank.

Of course, a transformer provided with one or more bearings according to the invention inside it can also assume a load-bearing function in other mechanical support structures.

Drawings

For further explanation of the invention, reference is made to the diagrammatic illustration in the following part of the description, from which further advantageous details and possible areas of application of the invention can be deduced. The drawings are to be regarded as illustrative in nature and are intended to illustrate features of the invention, but are not intended to limit or otherwise definitively represent the invention in any way. The figure shows a longitudinal section through a device according to the invention.

Detailed Description

The figure shows a longitudinal section through a cuboid shaped transformer tank 1. The active part of the transformer is not included. The two visible walls are the mutually opposite side walls 2 of the transformer tank 1. Between the side walls 2 two straight supports 3 are drawn, one of which is arranged closer to the cover 4 of the transformer tank 1 and the other closer to the base 5 of the transformer tank 1. At the point where the upper support 3 is connected to the side wall 2, a connecting element 6, such as a rail, extending perpendicular to the drawing plane is attached to the outside of the side wall 2. The connecting element 6 is intended to be connected to a mechanical support structure 7 of the nacelle. The connecting element 6 is connected to the side wall 2 at the point where the upper support 3 is connected to the inside of the side wall 2.

Of course, further supports 3, in particular supports coinciding with the two supports 3 shown, may be arranged in front of and/or behind the cross-sectional plane in the transformer tank 1.

List of reference numerals:

1 Transformer box

2 side wall

3 support part

4 cover

5 base

6 connecting element

7 mechanical support structure of nacelle