Mounting structure for bottom-hung box-type transformer of wind turbine generator
By installing the wind turbine transformer box-type substation under the nacelle and utilizing structures such as hanging frames, brackets, and connecting bolts, the problems of insufficient heat dissipation and space occupation in traditional box-type substation layouts are solved, improving equipment stability and operating efficiency, and reducing operation and maintenance costs.
Patent Information
- Application Number
- CN202520415921.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Traditional wind turbine transformers are located inside the nacelle, resulting in insufficient heat dissipation, large space occupation, poor equipment stability in harsh environments, difficult maintenance, and impact on operating efficiency and lifespan.
The transformer substation is placed outside the nacelle and uses an under-mounted installation structure. It is connected by a hanging frame, bracket and connecting bolts, combined with safety anchor points and hoisting devices to achieve external installation and safe fixation of the transformer substation.
It improves space utilization, enhances equipment stability, reduces failure rate, increases operating efficiency, extends equipment life, and reduces maintenance costs.
Smart Images
Figure CN223941623U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of wind turbine transformer installation, and in particular to a wind turbine under-mounted box-type transformer installation structure. Background Technology
[0002] Traditionally, wind turbine transformer substations are typically located inside the nacelle or at the base of the tower. However, the nacelle has limited space and a compact layout. Furthermore, wind turbines operating at high altitudes and in environments with significant wind speed variations may face challenges such as high temperatures, high humidity, and vibration. Therefore, the traditional transformer substation layout has limitations in terms of equipment heat dissipation, maintenance, and space utilization. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a wind turbine under-mounted box-type transformer installation structure. Placing the box-type transformer outside the wind turbine nacelle helps improve the space utilization of the equipment and avoids problems such as insufficient heat dissipation and space occupation in the nacelle that may occur in traditional layouts. In addition, it can reduce the stress on the equipment in harsh environments, improve overall stability, and reduce the failure rate of electrical equipment.
[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: a wind turbine under-mounted box-type transformer installation structure, including a hanging frame, a box-type transformer compartment cover, a bracket, and a box-type transformer body; the box-type transformer compartment cover is installed on the outside of the box-type transformer body, and the top of the box-type transformer compartment cover has an opening; the bracket is installed on the top of the box-type transformer body, forming an under-mounted box-type transformer structure; the hanging frame is located below the wind turbine nacelle, and the under-mounted box-type transformer structure is located inside the hanging frame, wherein the box-type transformer compartment cover is connected to the nacelle cover, and the bracket is connected to the wind turbine frame.
[0005] Furthermore, the structure includes connecting bolts; the bracket is provided with multiple bolt holes, and the wind turbine frame is provided with multiple mounting holes that correspond one-to-one with the bolt holes, and the bolt holes and mounting holes are connected by connecting bolts.
[0006] Furthermore, the support frame is equipped with multiple safety anchor points, each connected to a double safety hook for securing the operator.
[0007] Furthermore, the lifting frame is connected to a lifting device.
[0008] Compared with the prior art, this utility model has the following advantages and beneficial effects:
[0009] This invention places the prefabricated transformer under the wind turbine nacelle, which helps improve the space utilization of the equipment and avoids problems such as insufficient heat dissipation and space occupation in the nacelle that may occur in traditional layouts. At the same time, the under-mounted prefabricated transformer structure can meet the needs of improving operating efficiency and reliability. As the capacity of wind turbines gradually increases, operation and maintenance costs have become a major factor restricting their development. By optimizing the layout of the prefabricated transformer, the operating efficiency of wind turbines can be effectively improved, the service life of equipment can be extended, maintenance costs can be reduced, and operation and maintenance risks can be lowered. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of this utility model.
[0011] Figure 2 This is a structural diagram of a bottom-mounted transformer substation.
[0012] Figure 3 This is a schematic diagram of the connection structure between the support frame and the wind turbine frame.
[0013] Figure 4 for Figure 2 A magnified view of part A. Detailed Implementation
[0014] The present invention will be further described below with reference to specific embodiments.
[0015] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0016] Example 1
[0017] See Figures 1 to 4 As shown, the wind turbine under-mounted box-type transformer installation structure provided in this embodiment includes a hanging frame 1, a box-type transformer compartment cover 2, a bracket 3, a box-type transformer body 4, and connecting bolts 5.
[0018] The transformer substation enclosure 2 is installed on the outside of the transformer substation body 4. The top of the transformer substation enclosure 2 has an opening. The bracket 3 is installed on the top of the transformer substation body 4, forming a bottom-mounted transformer substation structure a. The lifting frame 1 is connected to a lifting device. The lifting frame 1 is located below the wind turbine nacelle 6. The bottom-mounted transformer substation structure a is located inside the lifting frame 1. The transformer substation enclosure 2 is connected to the enclosure of the nacelle 6. The bracket 3 has multiple bolt holes. The wind turbine frame 601 has multiple mounting holes that correspond one-to-one with the bolt holes. The bolt holes and mounting holes are connected by connecting bolts 5. The bracket 3 has multiple safety anchor points 301. The safety anchor points 301 are connected to safety double hooks for the safety fixation of the workers.
[0019] Example 2
[0020] The installation and replacement method for the undermount box-type transformer based on the wind turbine undermount box-type transformer installation structure described in Embodiment 1, provided in this embodiment, is as follows:
[0021] (1) Installation: Place the under-mounted box-type transformer body 4 on the lifting frame, complete the installation of the bracket 3, the connection between the under-mounted box-type transformer body 4 and the box-type transformer compartment cover 2, and the electrical related installation between the wind turbine and the under-mounted box-type transformer body. Lift the lifting frame so that the under-mounted box-type transformer structure is connected to the wind turbine host at high altitude. Complete the connection between the bracket 3 and the frame 601, and the connection between the box-type transformer compartment cover 2 and the nacelle cover. The operators reach the docking position from the front and rear of the nacelle cover, hang the safety double hooks through the safety anchor point 301 preset on the bracket 3, and after the bracket 3 and the frame 601 are aligned, quickly insert the connecting bolts 5 and complete the fastening of the connecting bolts 5.
[0022] (2) Replacement: Using the lifting frame 1, the under-mounted transformer substation structure is completely supported at high altitude. The workers wear safety belts, reach the transformer substation compartment, hang the safety double hooks on the safety anchor point 301 on the support 3, remove electrical interference objects to allow the under-mounted transformer substation structure to enter and exit, remove the connecting bolts between the under-mounted transformer substation structure and the nacelle cover, and then remove the connecting bolts 5 between the under-mounted transformer substation structure and the frame. The workers safely evacuate the transformer substation compartment. The old under-mounted transformer substation structure is hoisted to the ground, and the new under-mounted transformer substation structure is hoisted to high altitude and connected to the frame.
[0023] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all changes made in accordance with the shape and principle of this utility model should be covered within the protection scope of this utility model.
Claims
1. A mounting structure for a wind turbine-mounted box-type transformer, characterized in that: The system includes a hanging frame, a transformer substation enclosure, a support frame, and a transformer body. The transformer substation enclosure is installed on the outside of the transformer body, and has an opening at its top. The support frame is installed on top of the transformer body, forming a bottom-mounted transformer substation structure. The hanging frame is located below the wind turbine nacelle, and the bottom-mounted transformer substation structure is located inside the hanging frame. The transformer substation enclosure is connected to the nacelle enclosure, and the support frame is connected to the wind turbine frame.
2. The installation structure of a wind turbine under-mounted box-type transformer according to claim 1, characterized in that: Includes connecting bolts; the bracket is provided with multiple bolt holes, and the wind turbine frame is provided with multiple mounting holes that correspond one-to-one with the bolt holes, and the bolt holes and mounting holes are connected by connecting bolts.
3. The installation structure of a wind turbine under-mounted box-type transformer according to claim 1, characterized in that: The support frame is equipped with multiple safety anchor points, each connected to a double safety hook for securing the operator.
4. The installation structure of a wind turbine under-mounted box-type transformer according to claim 1, characterized in that: The lifting frame is connected to a lifting device.