Top-mounted cabin of box-type transformer substation

Abstract

The utility model relates to the technical field of wind turbine generators, in particular to an upper-mounted cabin of a box-type transformer substation. According to the box-type substation top-mounted cabin provided by the embodiment of the invention, the bulkhead is directly connected with the frame top beam and the bottom plate in the cabin so as to divide the cabin into the two independent cabins, and support profile steel and steel plates in a traditional structure are omitted, so that the number of parts is greatly reduced, the number of main body structures of the bulkhead is reduced by half, and the cost is reduced. Compared with the prior art, more than about half of fasteners are saved, so that the assembly process and process are simplified, the assembly efficiency of the cabin is remarkably improved, and in addition, the lightweight design of the cabin is also realized.

Description

Technical Field

[0001] The present application relates to the technical field of wind turbines, and in particular to a cabin of a box-type transformer with an upper part. Background Art

[0002] In the field of wind power generation technology, the box-type transformer-mounted model adopts a design in which the transformer is installed inside the nacelle. This can greatly reduce the amount of cables used in the wind turbine set and has significant cost advantages. These advantages have enabled the box-type transformer-mounted model to develop rapidly in recent years.

[0003] In the related art, the transformer in the box-type transformer will have high voltage during operation, so a separate transformer compartment needs to be arranged in the cabin for protection. The current transformer compartment is usually composed of supporting steel and steel plate: the supporting steel is connected to the cabin as a supporting structure, and the steel plate is fixed on the supporting steel to form a closed compartment.

[0004] However, the protection efficiency of the above structure is low and the weight is large. In addition, there is also the problem of tight cabin space. Summary of the invention

[0005] In order to solve part or all of the technical problems existing in the above-mentioned prior art, the present invention provides a cabin body of a box-type transformer mounted on top.

[0006] The technical solution of the embodiment of the present application is as follows:

[0007] A cabin body of a box-type transformer mounted on top, comprising:

[0008] A nacelle, wherein a generator and a transformer are arranged in the nacelle, and the generator and the transformer are respectively located at a first end and a second end in a length direction of the nacelle;

[0009] a bulkhead, the bulkhead being arranged in the nacelle, the bulkhead being located between the generator and the transformer, the bulkhead being in contact with the frame top beam and the bottom plate of the nacelle to separate the nacelle into two independent compartments; a first preset distance being provided between the bulkhead and the generator, and a second preset distance being provided between the bulkhead and the transformer, wherein the first preset distance is equal to the second preset distance;

[0010] A movable component is detachably arranged on the bulkhead.

[0011] In some possible implementations, the generator and the transformer are respectively in contact with two side panels in the length direction of the nacelle.

[0012] In some possible implementations, flanges are provided around the movable component, and the movable component is connected to the bulkhead via the flanges.

[0013] In some possible implementations, the shape of the bulkhead matches the cross-sectional shape of the cabin.

[0014] In some possible implementations, conventional components are also provided on the bulkhead.

[0015] In some possible implementations, the bulkhead, the movable component, and the conventional component are all made of aluminum metal.

[0016] In some possible implementations, an observation window is also included;

[0017] The observation window is arranged at a preset height of the bulkhead, wherein the preset height is a visual height.

[0018] The cabin of the box-type transformer with an upper-mounted machine provided in the embodiment of the present application has at least the following beneficial effects:

[0019] In the cabin of the box-type transformer-mounted type provided in the embodiment of the present application, the bulkhead is directly connected to the frame top beam and bottom plate inside the cabin to divide the cabin into two independent cabins, eliminating the supporting steel and steel plates in the traditional structure, thereby greatly reducing the number of parts, reducing the number of main structures of the bulkhead by half, and saving more than half of the fasteners, thereby simplifying the assembly process and significantly improving the assembly efficiency of the cabin. In addition, a lightweight design of the cabin is also achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the embodiments of the present application and constitute a part of the embodiments of the present application. The schematic embodiments of the embodiments of the present application and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] In the attached picture:

[0022] Figure 1 A side view of the cabin of a box-type transformer with an upper compartment provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the bulkhead structure of the cabin of a box-type upper-mounted transformer provided in an embodiment of the present application.

[0024] Description of reference numerals:

[0025] 100. Cabin; 110. Generator; 120. Transformer; 130. Frame top beam; 140. Bottom plate; 200. Bulkhead; 300. Movable assembly; 310. Flanging; 400. Conventional assembly; 500. Observation window; 600. Cable collection device. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In the field of wind power generation technology, the box-type transformer-mounted model adopts a design in which the generator and transformer are installed inside the nacelle. This can greatly reduce the amount of cables used in the wind turbine set and has significant cost advantages. These advantages have enabled the box-type transformer-mounted model to develop rapidly in recent years.

[0028] In the related art, the transformer in the box-type transformer will have high voltage during operation, so a separate transformer compartment needs to be arranged in the cabin for protection. The current transformer compartment is usually composed of supporting steel and steel plate: the supporting steel is connected to the cabin as a supporting structure, and the steel plate is fixed on the supporting steel to form a closed compartment.

[0029] However, since the size of the bulkhead protection device is approximately the same width and height as the engine room, and the number of parts involved is large, the assembly process of the entire engine room is complicated and the assembly efficiency is low, and the weight of the engine room itself is also large. In addition, in terms of the space layout of the engine room, the bulkhead completely occupies the rear space of the engine room, so that the maintenance space of the generator is occupied, resulting in a tight use of the engine room space, so the size of the engine room has to be increased.

[0030] In view of this, an embodiment of the present application provides a cabin of a box-type transformer mounted on top. In the cabin of a box-type transformer mounted on top provided in the embodiment of the present application, the bulkhead is directly connected to the frame top beam and bottom plate inside the cabin to separate the cabin into two independent cabins, eliminating the supporting steel and steel plates in the traditional structure, thereby greatly reducing the number of parts and components, reducing the number of main structures of the bulkhead by half, and saving more than half of the fasteners, thereby simplifying the assembly process and process, significantly improving the assembly efficiency of the cabin, and also achieving a lightweight design of the cabin.

[0031] like Figure 1-Figure 2 As shown, the cabin of the box-type transformer-mounted type provided in the embodiment of the present application includes a cabin, a bulkhead, and a movable assembly, wherein the cabin is a containing structure for installing a generator and a transformer, and the generator and the transformer are installed at the first end and the second end of the length direction of the interior of the cabin, respectively. Specifically, the generator and the transformer can be in contact with the two side panels in the length direction of the cabin, respectively, so as to make full use of the interior space of the cabin, thereby realizing the function of reducing the overall size of the cabin.

[0032] The bulkhead is a plate-type structure for isolating the transformer. The bulkhead is located in the cabin and contacts the frame top beam and bottom plate of the cabin. The bulkhead can separate the internal chamber of the cabin into two independent chambers. Preferably, the external shape of the bulkhead matches the cross-sectional shape of the internal chamber of the cabin, so that the bulkhead can be seamlessly connected to the cabin, thereby improving the sealing between the two independent chambers.

[0033] In actual use, the generator installed in the cabin needs to reserve a certain amount of maintenance space to facilitate the subsequent regular maintenance of the generator. Similarly, the transformer installed in the cabin also needs to reserve sufficient insulation distance and maintenance space. Figure 1 As shown, the bulkhead is arranged in the nacelle and is located between the generator and the transformer, the bulkhead and the generator have a first preset distance, and the bulkhead and the transformer have a second preset distance, wherein the first preset distance is equal to the second preset distance. In addition, a movable component can be detachably connected to the bulkhead.

[0034] Continue as Figure 1 As shown, assuming that the distance from the first end of the cabin to the end of the generator close to the bulkhead is D, the width of the generator maintenance space is d1, the length of the transformer itself is d, and the width of the transformer maintenance space is d2 (since the insulation width of the transformer is smaller than the width of its maintenance space, only the width of its maintenance space can be considered in actual design and use). When the wind turbine is operating normally, the bulkhead and the movable assembly are in a fixed connection state. At this time, there is a first preset distance d1 between the bulkhead and the generator, and the first preset distance d1 can be used for heat dissipation of the generator. There is a second preset distance d2 between the bulkhead and the transformer, and the second preset distance d1 can ensure that the transformer has sufficient high-voltage insulation distance and safety space.

[0035] When the wind turbine is shut down and needs to be repaired and maintained, the transformer is powered off and the active components are removed from the bulkhead. Figure 2 As shown, after the movable assembly is removed from the bulkhead, the second preset distance d2 can be released, so that the generator has sufficient inspection and maintenance space. In actual use, the connection method between the bulkhead and the movable assembly can be determined according to the inspection and maintenance frequency of the generator of different wind turbines. Preferably, the connection method between the two includes but is not limited to buckles or bolts.

[0036] In addition, the cabin length of the traditional box-type transformer-mounted model is D+d+d1+d2, and the cabin length of the box-type transformer-mounted model using the above structural design is D+d+max(d1, d2). In actual design, the values ​​of the first preset distance d1 and the second preset distance d2 are substantially equal, about 0.5m-0.6m. Therefore, the above structural design can effectively shorten the length of the cabin by about 0.5m, thereby reducing the cost of the wind turbine set, and at the same time facilitate the transportation and installation of the cabin.

[0037] In some embodiments, conventional components of different shapes and sizes are also provided on the bulkhead, such as Figure 2 As shown. Preferably, the movable component and the conventional component are also provided with flanges around them, so that the movable component and the conventional component can be connected to the bulkhead through the flanges, thereby greatly improving the sealing between the engine compartment and the transformer compartment. In addition, the movable component, the conventional component and the bulkhead can all be made of aluminum plates.

[0038] In some embodiments, an observation window of a preset height is also provided on the bulkhead, and the height of the observation window is the visual height in normal use. Through the observation window, the condition of the transformer of the wind turbine during operation can be regularly observed, so as to timely discover abnormal conditions of the transformer. In addition, a lockable passage door is also provided on the bulkhead for passage during daily inspection, repair and maintenance.

[0039] In some embodiments, a cable collection device is also provided above and on the side of the bulkhead, such as Figure 2 As shown. The cable collection device arranges horizontal cables at the top to avoid the space where people pass and overhaul and maintenance; and arranges vertical cables at the side to effectively avoid the area where people pass. The above structural design can avoid physical contact between people and live systems, so that the cabin has a certain overhaul and maintenance space, thereby avoiding accidental contact by people.

[0040] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cabin body of a box-type transformer mounted on top, characterized in that: include: A nacelle, wherein a generator and a transformer are arranged in the nacelle, and the generator and the transformer are respectively located at a first end and a second end in a length direction of the nacelle; a bulkhead, the bulkhead being arranged in the nacelle, the bulkhead being located between the generator and the transformer, the bulkhead being in contact with the frame top beam and the bottom plate of the nacelle to separate the nacelle into two independent compartments; a first preset distance being provided between the bulkhead and the generator, and a second preset distance being provided between the bulkhead and the transformer, wherein the first preset distance is equal to the second preset distance; A movable component is detachably arranged on the bulkhead.

2. The cabin of the box-type transformer mounted on top of the machine according to claim 1, characterized in that: The generator and the transformer are respectively in contact with two side panels in the length direction of the nacelle.

3. The cabin of the box-type transformer mounted on top of the machine according to claim 1, characterized in that: The movable component is provided with flanges around its periphery, and the movable component is connected to the bulkhead through the flanges.

4. The cabin of the box-type transformer mounted on top of the machine according to claim 1, characterized in that: The shape of the bulkhead is consistent with the cross-sectional shape of the cabin.

5. The cabin of the box-type transformer mounted on top according to any one of claims 1 to 4, characterized in that: The bulkhead plate and the movable component are both made of aluminum metal.

6. The cabin of the box-type transformer mounted on top of the machine according to claim 1, characterized in that: Also includes observation windows; The observation window is arranged at a preset height of the bulkhead, wherein the preset height is a visual height.

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