Protection device for wind power box transformer substation

Abstract

The utility model relates to the technical field of transformer substation frames, in particular to a protection device for a wind power box transformer substation. A protection device for a wind power box transformer substation comprises a top buffer frame located at a certain distance above the wind power box transformer substation and a supporting stand column used for supporting the top buffer frame, icebreaking structures are densely distributed in the extension face of the top buffer frame, and scattering frame holes allowing broken ice blocks to fall down are formed between the icebreaking structures. When ice blocks fall off, the ice blocks are split into small ice blocks through the ice breaking supports of the top buffering frame, the top buffering frame absorbs destructive impact force of the falling ice blocks, the ice blocks fall off along the scattering frame holes after being broken, and safety accidents such as box transformer substation damage can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer substation frames, in particular to a wind power box transformer protection device. Background Art

[0002] With the national goal of "carbon peak and carbon neutrality", various regions are actively developing new energy power generation projects, and the number of box-type substations used for renewable energy power generation such as photovoltaic and wind power is increasing. Huabian and Meibian, which are used to support wind turbines, are widely used due to their compact overall appearance and superior technical performance. However, since areas with rich wind energy resources are mostly located on plateaus, cold mountain tops or ridges, where the temperature is low and the humidity is high, it is easy to cause ice to form on the blades and high parts of the tower of the wind turbine. When the adhesion of the ice layer decreases during the rotation of the blades, it is very easy for ice to fall off. Since the transformer body and heat sink of Huabian and Meibian are outside the box transformer, once they are hit by falling ice at the top of the tower or ice thrown off by the blades, it is easy to cause damage to the box transformer, and the overall maintenance cost of the transformer is extremely high. Utility Model Content

[0003] The utility model aims to provide a protection device for a wind power box transformer, which is used to solve the problem that the existing box transformer is easily damaged when ice cubes fall from the blades or tower of the wind turbine generator set.

[0004] The utility model adopts the following technical scheme: a wind turbine box transformer protection device, comprising a top buffer frame located at a certain distance above the wind turbine box transformer and supporting columns for supporting the top buffer frame, the top buffer frame is densely covered with ice-breaking structures within its extended surface, and there are scattered frame holes between the ice-breaking structures for the broken ice to fall.

[0005] The utility model is a novel wind turbine box transformer protection device. When the utility model is in use, the top buffer frame is located at a certain distance above the wind turbine box transformer, and the supporting columns are connected to the top buffer frame to support the top buffer frame. The top buffer frame is densely covered with ice-breaking structures within its extended surface. When ice cubes fall from the blades or tower of the wind turbine generator set, the ice cubes first pass through the ice-breaking bracket of the top buffer frame, and the ice cubes fall thereon and are split into small pieces of ice. The top buffer frame absorbs the destructive impact force of the falling ice cubes, and the ice cubes fall along the scattering frame holes after being broken, which can effectively avoid safety accidents such as damage to the box transformer.

[0006] Furthermore, the top buffer frame includes at least two cross beams and at least two longitudinal beams, the cross beams and the longitudinal beams form a rectangular frame, and the ice breaking structure includes an ice breaking bracket, and there are multiple ice breaking brackets distributed along the length direction of the cross beam, and the ice breaking bracket is a triangular structure with the vertex facing upward. The top buffer frame is a rectangular frame surrounded by cross beams and longitudinal beams, with a stable structure and convenient installation. The ice breaking brackets are distributed with multiple ice breaking brackets, and the ice breaking bracket is a triangular structure with the vertex facing upward. On the one hand, the triangular structure is stable, and on the other hand, the vertex of the triangle facilitates the crushing of ice cubes.

[0007] Furthermore, the ice-breaking support includes a fixed bottom plate, a connection structure connected to the cross beam is arranged on the fixed bottom plate, two opposite oblique sides are overlapped on the fixed bottom plate to form a triangular structure, both oblique sides are angle steels, and the edges face upward to form ice-breaking edges. The triangular structure formed by the fixed bottom plate and the oblique angle steels makes the entire ice-breaking support more stable in triangle formation, and the edges formed by the oblique angle steels are convenient for ice breaking.

[0008] Furthermore, the fixed bottom plate and the two hypotenuses form an isosceles triangle, which makes the ice-breaking support structure more stable, and the edges of the two hypotenuses are upward to increase the crushing area and achieve better crushing effect.

[0009] Furthermore, the ice-breaking brackets of two adjacent cross beams are arranged in a staggered manner in the longitudinal direction. The staggered arrangement makes the ice-breaking area evenly distributed, and the falling ice is broken more efficiently.

[0010] Furthermore, longitudinally extending ice-breaking beams are arranged at intervals on the cross beams along the length direction, and the ice-breaking beams pass through the ice-breaking brackets to form a grid structure on the top buffer frame, and each mesh of the grid structure constitutes the scattered frame holes. The ice-breaking beams pass through the ice-breaking brackets and overlap on each cross beam, and the ice blocks are crushed by the ice-breaking beams after passing through the ice-breaking brackets, or the uncrushed ice blocks are crushed after passing through the ice-breaking beams, so that the crushing range is more extensive and effective, and the ice-breaking beams pass through the ice-breaking brackets to form a grid structure on the top buffer frame, so that the structural strength of the top buffer frame is higher.

[0011] Furthermore, the ice-breaking beam is a triangular cone beam with corners facing upwards. The corners of the triangular cone beam are convenient for breaking ice cubes, and the triangular cone structure is simple to manufacture, saving costs, and the bottom edge and the cross beam have a large contact area, and the structural strength after connection is high.

[0012] Furthermore, the cross beam is a channel steel cross beam with an opening facing downward, and the fixed bottom plate is fixedly connected to the bottom of the cross beam groove. This arrangement facilitates the connection between the fixed bottom plate and the cross beam, and improves the connection strength and firmness.

[0013] Furthermore, a shock-absorbing rubber is arranged between the fixed bottom plate and the cross beam. The shock-absorbing rubber is arranged between the fixed bottom plate and the cross beam to provide a buffer force when the ice-breaking bracket is impacted by ice cubes, ensure the connection strength between the fixed bottom plate and the cross beam, and absorb the impact force when the ice cubes fall.

[0014] Furthermore, the longitudinal beam is a channel steel longitudinal beam with an opening facing upwards. The two side plates of the channel steel longitudinal beam with an opening facing upwards face upwards and can break ice blocks when they fall to form a supplementary ice-breaking area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a first embodiment of a wind turbine box transformer protection device of the utility model;

[0016] Figure 2 for Figure 1 A top view of

[0017] Figure 3 for Figure 1 The main view;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure of the supporting columns in FIG.

[0019] Figure 5 for Figure 4 The main view;

[0020] Figure 6 for Figure 4 A top view of

[0021] Figure 7 for Figure 1 Schematic diagram of the structure of the ice-breaking bracket;

[0022] Figure 8 for Figure 7 The main view;

[0023] Fig. 9 for Figure 7 A top view of

[0024] Fig.10 for Figure 7 Side view of

[0025] Fig.11 for Figure 1 Schematic diagram of the structure of the tapered beam in FIG.

[0026] Fig.12 for Fig.11 The main view;

[0027] Fig.13 for Fig.11 Top view of the .

[0028] In the figure: 1. Column base plate; 2. Column reinforcement plate; 3. Column square tube; 4. Ice-breaking angle steel; 5. Fixed base plate; 6. Shock-absorbing rubber; 7. Ice-breaking bracket; 8. Conical beam; 9. Support column; 10. Longitudinal beam; 11. Cross beam. DETAILED DESCRIPTION

[0029] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0030] Specific embodiment 1 of the wind power box transformer protection device of the utility model:

[0031] The utility model of the wind power box transformer protection device is as follows Figure 1-13 As shown, a protective device for a wind turbine box transformer includes a top buffer frame, which is located above the wind turbine box transformer and at a certain distance. When ice cubes fall, buffering is provided to prevent the wind turbine box transformer from being subjected to a large impact force. The top buffer frame includes a plurality of cross beams 11 and two longitudinal beams 10 to form a rectangular frame. A plurality of supporting columns 9 supporting the top buffer frame are distributed under the cross beams 11 on both sides. A plurality of ice-breaking brackets 7 are compactly distributed along the length direction on each cross beam 11 to break the ice cubes when the ice cubes fall from the high places of the wind blades or the tower. The ice-breaking brackets 7 of two adjacent cross beams 11 are staggered in the longitudinal direction, so that the ice-breaking area is evenly distributed, and the falling ice cubes can be broken more efficiently.

[0032] like Figure 7-10 As shown, the ice-breaking bracket 7 is a triangular bracket, which includes a fixed base plate 5. The fixed base plate 5 has inclined ice-breaking angle steels 4 symmetrically arranged in the length direction. The ice-breaking angle steels 4 and the fixed base plate 5 are welded to form an isosceles triangle structure. The edges of the ice-breaking angle steels 4 face upward to form breaking edges. The fixed base plate 5 is provided with bolt holes connected to the cross beam 11. The isosceles triangle structure formed by the fixed base plate 5 and the ice-breaking angle steels 4 makes the ice-breaking bracket 7 more stable on the one hand, and on the other hand, the edges of the angle steels and the apex angle of the triangle are formed to facilitate ice breaking.

[0033] The cross beam 11 is provided with longitudinally extending ice-breaking beams at intervals along the length direction. The ice-breaking beams are placed between the two longitudinal beams 10 and have the same length as the longitudinal beams 10. Figure 11-13As shown, the ice-breaking beam is a conical beam 8 of a triangular conical structure. The conical beam 8 is a cold-rolled steel plate whose two sides in the width direction are bent toward one side close to each other to form a hollow triangular conical structure. The corners of the conical beam 8 are arranged upward. The conical beam 8 passes through the ice-breaking bracket 7 so that the top buffer frame forms a grid structure. The mesh of the grid constitutes a scattered frame hole for the broken ice cubes to fall. The corners of the conical beam 8 can be used to crush the ice cubes for a second time after the ice cubes pass through the ice-breaking bracket 7, or to crush the unbroken ice cubes after passing through the conical beam 8. The triangular conical structure of this arrangement is simple to manufacture. Bottom plates are provided at both ends of the conical beam 8, and bolt holes are provided on the bottom plates to facilitate fixed connection with the cross beam 11.

[0034] The cross beam 11 is a channel steel cross beam with its opening facing downward, the fixed bottom plate 5 is fixedly connected to the bottom of the channel steel cross beam, and a shock absorbing rubber 6 is arranged between the fixed bottom plate 5 and the cross beam 11 to provide a buffering force when the ice breaking bracket 7 is impacted by ice, to ensure the connection strength between the fixed bottom plate 5 and the cross beam 11 and to absorb the impact force when the ice falls. The side plate of the channel steel cross beam is vertically downward for easy fixed connection with the bottom plate of the tapered beam 8. The longitudinal beam 10 is a channel steel longitudinal beam with its opening facing upward, and the two side plates of the channel steel longitudinal beam with its opening facing upward are vertically upward so that ice can be crushed when it falls to this point to form a supplementary ice breaking area.

[0035] like Figure 4-6 As shown, the support column 9 includes a column square tube 3, and horizontal column bottom plates 1 are arranged at both ends of the column square tube 3. A column reinforcement plate 2 is arranged between the column bottom plate 1 and the column square tube 3. The column bottom plate 1 is welded with the column square tube 3 and the column reinforcement plate 2. Bolt holes are arranged on the column bottom plate 1. The column bottom plate 1 at one end is fixed to the foundation of the on-site box-type transformer by expansion screws, and the column bottom plate 1 at the other end is fixedly connected with the cross beam 11 and the longitudinal beam 10 by bolts. The column square tube 3 has a stable structure, which ensures the stability of the top buffer frame. It is connected to the ground and the top buffer frame through the column bottom plate 1, has a large contact area, and has high structural stability.

[0036] When the wind power box transformer protection device of the utility model is in use, it can be installed on the box transformer foundation after arriving at the site, and can also be installed in the later stage of the running project. The supporting column 9 is fixed on the foundation, and the cross beam 11 and the longitudinal beam 10 are spliced ​​with the supporting column 9. The top buffer frame surrounded by the cross beam 11 and the longitudinal beam 10 is at a certain distance above the box transformer, forming a protective shed structure for shielding the box transformer. When ice cubes fall from the blades or high places of the tower of the wind turbine generator set, they are first broken into small pieces of ice after the edges of the ice-breaking angle steel 4 of the ice-breaking bracket 7, and the destructive impact force of the falling ice cubes is absorbed. The ice cubes that are broken once or the ice cubes that are not broken are broken for the second time by the tapered beam 8, the cross beam 11 and the longitudinal beam 10 together, which can effectively avoid safety accidents such as damage to the box transformer. Even if the protective device is damaged by falling ice, due to the overall adoption of the assembled structure solution, the on-site operating personnel can also quickly and independently complete the replacement, and continue to protect the box transformer without stopping the wind turbine to avoid loss of power generation.

[0037] Through the above description of the specific embodiment 1 of the wind turbine box transformer protection device of the utility model, it can be seen that the wind turbine box transformer protection device of the utility model forms a primary ice breaking through the ice breaking bracket, and then performs secondary ice breaking protection through the conical beam, the cross beam and the longitudinal beam. The protection device absorbs the destructive impact force of falling ice cubes, which can effectively avoid safety accidents such as damage to the box transformer.

[0038] Of course, the wind turbine box transformer protection device of the present utility model is not limited to the above-mentioned embodiments. The following also lists several other implementation methods of the wind turbine box transformer protection device based on the design concept of the present utility model.

[0039] For example, in other embodiments, different from the above-mentioned embodiment 1, the top buffer frame includes multiple cross beams and multiple longitudinal beams, and the multiple cross beams and multiple longitudinal beams form a grid structure. The cross beams are provided with multiple cross beam icebreaking brackets along their length directions, and the longitudinal beams are provided with multiple longitudinal beam icebreaking brackets staggered with the cross beam icebreaking brackets along their length directions.

[0040] For example, in other embodiments, different from the above-mentioned embodiment 1, the ice-breaking bracket includes a fixed bottom plate, and the two oblique sides are square tubes, and the edges of the square tubes are arranged upward. Of course, the two oblique sides can be deformable and can also be single plates arranged vertically, and the single plates constitute the ice-breaking structure.

[0041] For another example, in other implementations, different from the above-mentioned first embodiment, the inclined angle steel is directly welded to the cross beam, and a fixed bottom plate and shock-absorbing rubber are no longer provided. In this case, the inclined angle steel and the cross beam together form a triangular structure.

[0042] Or in other embodiments, different from the above-mentioned embodiment 1, the ice-breaking beam can be set as a pentagonal pyramid structure, with the corners of the pentagonal pyramid arranged upward. Of course, the ice-breaking beam is deformable and is a longitudinally extending angle steel with the corners arranged upward.

[0043] Or in other embodiments, different from the above-mentioned embodiment 1, the crossbeam is a channel steel crossbeam with an opening on one side facing away from the tapered beam, the bottom of the channel steel crossbeam is used for fixed connection with the tapered beam, and the two side edges are respectively used for fixed connection with the supporting column and the fixed base plate.

[0044] Alternatively, in other embodiments, different from the first embodiment, the two longitudinal beams are configured as channel steel longitudinal beams with openings facing downward, and ice-breaking brackets are provided on the channel steel longitudinal beams or tapered beams are provided on the longitudinal beams.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the description and drawings of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wind turbine box transformer protection device, characterized in that: It comprises a top buffer frame located at a certain distance above the wind turbine box transformer and a supporting column (9) for supporting the top buffer frame. The top buffer frame is densely covered with ice breaking structures within its extended surface. There are scattered frame holes between the ice breaking structures for broken ice blocks to fall.

2. The wind turbine box transformer protection device according to claim 1 is characterized in that: The top buffer frame comprises at least two cross beams (11) and at least two longitudinal beams (10), the cross beams (11) and the longitudinal beams (10) forming a rectangular frame, and the ice-breaking structure comprises an ice-breaking bracket (7), a plurality of ice-breaking brackets (7) are distributed along the length direction of the cross beam (11), and the ice-breaking brackets (7) are triangular structures with the top angles facing upwards.

3. The wind turbine box transformer protection device according to claim 2 is characterized in that: The ice-breaking support (7) comprises a fixed bottom plate (5), a connection structure connected to the cross beam (11) is arranged on the fixed bottom plate (5), two opposite oblique sides are overlapped on the fixed bottom plate (5) to form a triangular structure, both oblique sides are angle steels, and the edges face upwards to form ice-breaking edges.

4. The wind turbine box transformer protection device according to claim 3 is characterized in that: The fixed bottom plate (5) and the two hypotenuses form an isosceles triangle.

5. The wind turbine box transformer protection device according to any one of claims 2 to 4, characterized in that: The ice-breaking brackets (7) of two adjacent cross beams (11) are arranged in a staggered manner in the longitudinal direction.

6. The wind turbine box transformer protection device according to claim 5 is characterized in that: The cross beam (11) is provided with longitudinally extending ice-breaking beams arranged at intervals along the length direction, and the ice-breaking beams pass through the ice-breaking brackets (7) so that the top buffer frame forms a grid structure, and the mesh holes of the grid structure constitute the scattered frame holes.

7. The wind turbine box transformer protection device according to claim 6 is characterized in that: The ice-breaking beam is a triangular cone-shaped beam (8) with its corners facing upwards.

8. The wind turbine box transformer protection device according to claim 3 is characterized in that: The cross beam (11) is a channel steel cross beam with an opening facing downward, and the fixed bottom plate (5) is fixedly connected to the bottom of the channel of the cross beam (11).

9. The wind turbine box transformer protection device according to claim 8 is characterized in that: Shock-absorbing rubber (6) is provided between the fixed bottom plate (5) and the crossbeam (11).

10. The wind turbine box transformer protection device according to claim 2 is characterized in that: The longitudinal beam (10) is a channel steel longitudinal beam with an opening facing upward.

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