CORROSION PROTECTION AGENT CONTAINER II

Description

[0001] The invention relates to a corrosion protection container according to the preamble of claim 1 and a method for assembling a wind turbine whose gearbox is provided with such a corrosion protection container.

[0002] US 2,511,726 A, US 2,407,023 A, and US 2,335,901 disclose corrosion inhibitor containers that can be screwed into a corresponding internal thread of a transmission housing using an external thread. The corrosion inhibitor containers release a corrosion inhibitor into the interior of the transmission housing. This prevents corrosion from forming in the transmission housing.

[0003] If a gearbox is delivered with a corrosion inhibitor reservoir, it must be removed before commissioning. The internal thread into which the corrosion inhibitor reservoir was screwed must then be sealed with a screw plug. In individual cases, however, it may happen that a suitable screw plug is not available, perhaps due to negligence. Commissioning of the gearbox will be delayed as a result.

[0004] The invention is based on the object of providing a corrosion protection agent container that does not have the disadvantages inherent in the prior art. In particular, the delays in commissioning a transmission described above are to be avoided.

[0005] This object is achieved by a corrosion protection agent container according to claim 1 and a method according to claim 8.

[0006] The corrosion protection container, i.e., a container for holding a corrosion protection agent, has at least one chamber. The chamber is defined as a hollow space at least partially enclosed by the corrosion protection agent container.

[0007] The chamber serves to hold a corrosion inhibitor.

[0008] Corrosion inhibitor refers to an agent that releases gases for corrosion protection, i.e. gases that inhibit corrosion, and / or a moisture-absorbing agent, such as silicate gel.

[0009] The corrosion protection container further comprises at least one gas-permeable or permeable wall. In particular, the wall is permeable to the released corrosion-inhibiting gases and / or to moisture. Preferably, the wall is perforated, i.e., has several through holes.

[0010] The corrosion inhibitor container is also provided with at least one external thread, which allows the corrosion inhibitor container to be screwed into a core hole, i.e., a bore with an internal thread, in a gearbox housing. The core hole is preferably designed as a through hole. The core hole can be, for example, an oil fill and drain opening or an inspection opening.

[0011] Preferably, the corrosion inhibitor container is screwed into the core hole from the outside. Before screwing in, the corrosion inhibitor container is located outside the gearbox housing or in a vicinity of the gearbox housing. Starting from there, when the corrosion inhibitor container is screwed into the core hole, at least a portion of the corrosion inhibitor container, which includes the wall, is inserted through the core hole into the interior of the gearbox housing.

[0012] The interior of the gearbox housing is a cavity within the gearbox housing, which is at least partially surrounded by the gearbox housing. The gearbox housing encapsulates the cavity from an area outside the gearbox housing or from the area surrounding the gearbox housing.

[0013] The corrosion inhibitor container is designed so that the wall is located inside the gearbox housing and separates the chamber from the interior when the corrosion inhibitor container is screwed into the core hole. Due to the permeability of the wall, corrosion inhibitors or the released gases can pass from the chamber into the gearbox housing and / or moisture from the interior into the chamber.

[0014] In addition to the external thread, the corrosion protection container according to the invention has at least one internal thread. A screw plug can be screwed into this internal thread. The same screw plug can be screwed into the core hole if the corrosion protection container is not screwed into the core hole. This implies that the screw plug has an external thread that is identical to the external thread of the corrosion protection container.

[0015] The internal thread of the corrosion inhibitor reservoir allows the screw plug to be delivered captively. If the corrosion inhibitor reservoir is removed before commissioning the gearbox, the screw plug is guaranteed to be present and can be screwed into the core hole instead of the corrosion inhibitor reservoir.

[0016] In a preferred embodiment, the screw plug serves to close the chamber. Thus, when the screw plug is screwed into the internal thread of the corrosion inhibitor container, the chamber is closed by the screw plug. This implies that the chamber is accessible through the internal thread when the screw plug is not screwed in. In particular, the chamber can then be filled with the corrosion inhibitor through the internal thread.

[0017] The corrosion protection agent container preferably also has a rotationally symmetrical basic shape. This means that the corrosion protection agent container is at least partially rotationally symmetrical. A portion of the corrosion protection agent container is therefore rotationally symmetrical. Furthermore, the corrosion protection agent container may have parts, such as thread grooves or recesses, that are not rotationally symmetrical. The thread axes of the internal thread and the external thread of the corrosion protection agent container preferably coincide with an axis of symmetry of the rotationally symmetrical basic shape.

[0018] In a further preferred embodiment, the corrosion protection agent container consists of a first part, a second part, and a third part. The first part has the wall, the second part the external thread, and the third part the internal thread. The second part is arranged between the first part and the third part. This implies that the first part is located at least partially inside the gear housing, the second part at least partially in the core hole, and the third part at least partially outside the gear housing or in the vicinity of the gear housing when the corrosion protection agent container is screwed with its external thread into the core hole of the gear housing.

[0019] Preferably, the second part is adjacent to the first part and to the third part, but the first part is not adjacent to the third part.

[0020] In a preferred development, the corrosion protection agent container belongs to a wind turbine gearbox with a gearbox housing that has a core hole into which the corrosion protection agent container is screwed.

[0021] A screw plug is preferably screwed into the internal thread of the corrosion protection container. This means that the screw plug can also be screwed into the core hole.

[0022] The corrosion protection container described above enables a method according to the invention for installing or assembling a wind turbine with the following steps: Installation of the wind turbine gearbox described above into the wind turbine; removal of the corrosion inhibitor container from the core hole by unscrewing the corrosion inhibitor container from the core hole; removal of the plug screw from the internal thread by unscrewing it; and screwing the plug screw into the core hole after removing the corrosion inhibitor container from the core hole and the plug screw from the internal thread.

[0023] The process steps are preferably performed in the specified order. Any other sequence of execution of the process steps is possible, provided the wording of the description does not contradict this.

[0024] Preferred embodiments of the invention are illustrated in the figures. Corresponding reference numerals indicate identical or functionally equivalent features. In detail: Fig. 1an opened corrosion inhibitor container; and Fig. 2 a corrosion protection container with a screw plug.

[0025] The corrosion protection tank 101 according to Figure 1 has an opening 103 through which a corrosion inhibitor can be introduced into the container 101.

[0026] Using an external thread 105, the corrosion inhibitor container 101 can be screwed into a corresponding internal thread of a transmission housing. A lower region of the corrosion inhibitor container 101 is then located inside the transmission housing. In this region, the corrosion inhibitor container 101 has openings 107 through which the corrosion inhibitor can outgas into the interior of the transmission.

[0027] The corrosion inhibitor container 101 is provided with a ribbing 109 in its upper area. This makes it easier to screw the corrosion inhibitor container 101 into the gearbox housing.

[0028] Furthermore, the corrosion inhibitor container 101 has an internal thread 111 in its upper area. This thread protrudes from the transmission housing when the corrosion inhibitor container is screwed into the transmission housing. In particular, the internal thread remains accessible.

[0029] As in Fig. 2 As shown, the internal thread 111 serves to accommodate a screw plug 201. When the gearbox is delivered, the corrosion protection container 101 is initially screwed into the gearbox housing. The screw plug 201 is located in the internal thread 111 of the corrosion protection container 101.

[0030] To commission the gearbox, the corrosion protection container 101 is removed. To close the opening created in the gearbox housing, the screw plug 201 is removed from the corrosion protection container 101 and screwed into the gearbox housing. Reference symbol

[0031] 101Corrosion protection container 103Opening 105External thread 107Opening 109Ribbing 111Internal thread 201Screw plug

Claims

1. Corrosion-inhibitor container (101) having at least one chamber for receiving a corrosion inhibitor, having at least one gas-permeable wall and having at least one external thread (105); wherein the corrosion-inhibitor container (101) is configured to be screwed into a core hole of a transmission housing by way of the external thread (105); wherein the wall separates the chamber from an interior of the transmission housing when the corrosion-inhibitor container (101) has been screwed into the core hole; characterized by at least one internal thread (111) which is configured to receive a closure screw (201) which is configured to be screwed into the core hole.

2. Corrosion-inhibitor container (101) according to Claim 1; characterized in that the chamber is accessible through the internal thread (111).

3. Corrosion-inhibitor container (101) according to either of the preceding claims; characterized in that the corrosion-inhibitor container (101) has a rotationally symmetrical basic shape.

4. Corrosion-inhibitor container (101) according to one of the preceding claims; characterized in that the corrosion-inhibitor container (101) consists of a first part, a second part and a third part; wherein the first part has the wall; wherein the second part has the external thread (105) and the third part has the internal thread (111); and wherein the second part is arranged between the first part and the third part.

5. Corrosion-inhibitor container (101) according to the preceding claim; characterized in that the second part is adjacent to the first part and to the third part.

6. Wind-turbine transmission having a transmission housing; characterized by a corrosion-inhibitor container (101) according to one of the preceding claims; wherein the transmission housing has a core hole; and wherein the corrosion-inhibitor container (101) is screwed into the core hole.

7. Wind-turbine transmission according to the preceding claim; characterized in that a closure screw (201) is screwed into the internal thread (111) of the corrosion-inhibitor container (101).

8. Method for assembling a wind turbine, comprising the following steps: - installing a wind-turbine transmission according to the preceding claim; - removing the corrosion-inhibitor container (101) from the core hole; - removing the closure screw (201) from the internal thread (111); and - screwing the closure screw (201) into the core hole.