Mountain photovoltaic box transformer substation foundation and construction method

Abstract

The invention belongs to the technical field of photovoltaic box transformer substations, and particularly relates to a mountain photovoltaic box transformer substation foundation and a construction method.The mountain photovoltaic box transformer substation foundation comprises a base, the base comprises a supporting plate, stand columns are fixed to the periphery of the bottom of the supporting plate, and stairs are fixed to the side edge of the supporting plate; the photovoltaic box transformer substation main body is fixedly arranged above the supporting plate; the oil liquid recovery assembly is arranged below the supporting plate, the oil liquid recovery assembly comprises a collection box, the collection box is fixed below the supporting plate through a fixing plate, the top of the collection box is open, an oil discharge pipe is fixed to the bottom of the collection box, and multiple sets of oil leakage holes are formed in the supporting plate; by arranging the collecting box, leaked oil liquid can be recovered conveniently, and oil liquid waste is avoided; in addition, when a fire occurs, the collecting box can be closed in time, and greater loss caused by fire spreading is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic box transformers, and in particular to a mountain photovoltaic box transformer foundation and a construction method. Background Art

[0002] As a renewable energy source, solar energy has an irreplaceable position in the long-term development of energy strategies. Photovoltaic power generation is a technology that uses photovoltaic panels to receive solar energy to generate electricity. Mountain photovoltaic power stations have a wide range of land, and the layout of box-type transformers is scattered. In the typical design of oil-immersed transformers, drain pipes are connected from the oil retaining pools of each oil-immersed transformer to the main drain pipe, and the main drain pipe is laid to the accident oil pool with a certain slope. This traditional design method uses an all-underground reinforced concrete structure oil pool. When the box transformers are arranged more dispersedly, it is more difficult to lead the accident oil of each box transformer to the total accident oil pool. Moreover, it requires more and longer main drain pipes to lead all the accident oil of all box transformers to the total accident oil pool, or a photovoltaic power station needs to be arranged with multiple accident oil pools to meet the requirements of accident oil drainage.

[0003] A Chinese patent application CN218826541U discloses an overhead box transformer foundation suitable for mountain photovoltaic oil transformers, which mainly includes a load-bearing and operating platform beam and an oil storage tank; the load-bearing and operating platform beam is supported by load-bearing columns and is higher than the floor surface, and a steel ladder is provided on one side of the load-bearing and operating platform beam; the bottom plate of the oil storage tank is paved with a pebble layer, and the bottom plate is higher than the floor surface and lower than the load-bearing and operating platform beam; the oil storage tank is provided with an oil drain pipe, which is flush with the bottom plate of the oil storage tank and connects the inside and outside of the oil storage tank, and the oil drain pipe extending out of the oil storage tank is provided with a valve. The above technology solves the defects of scattered layout of box-type transformers in mountain photovoltaic power stations, numerous and scattered oil retaining pools, excessive length of the main oil drain pipe, and the need for multiple total accident oil pools for the entire power station, and has the characteristics of reasonable structure, convenient use, safety and environmental protection.

[0004] However, the above technology often has the following defects: the oil storage tank of the above technology is set below the oil-immersed transformer, and sparks may be generated when the device fails. The sparks fall into the oil storage tank below, which is easy to ignite the oil in the tank, causing a fire and causing greater losses. To this end, the present invention provides a mountain photovoltaic box transformer foundation and construction method. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the mountain photovoltaic box transformer foundation of the present invention comprises:

[0007] A base, the base comprising a support plate, pillars are fixed around the bottom of the support plate, and stairs are fixed on the side of the support plate;

[0008] A photovoltaic box transformer body, wherein the photovoltaic box transformer body is fixedly installed above the support plate;

[0009] An oil recovery component is arranged under the support plate. The oil recovery component includes a collection box, which is fixed under the support plate through a fixing plate. The top of the collection box is open, an oil drain pipe is fixed to the bottom of the collection box, and a plurality of oil leakage holes are provided on the support plate.

[0010] Preferably, a support frame is provided on the inner side of the upper portion of the collection box, the middle portion of the support frame is recessed downwards, a through groove is provided in the middle of the support frame, the side walls of the support frame are arranged in an inclined shape, a top plate is provided above the support frame, top blocks are provided around the bottom of the top plate, the bottom end of the top block overlaps the edge of the through groove, a mounting groove is provided in the middle of the top plate, an elastic bag is provided in the mounting groove, the top of the elastic bag extends to above the top plate, and a protrusion is provided on the top of the elastic bag.

[0011] Preferably, a movable cavity is opened inside the top plate and located at the side of the mounting groove, the movable cavity is L-shaped, the vertical end of the movable cavity extends to the outside of the bottom of the top plate, the horizontal end of the movable cavity is connected to the movable cavity, the top block is sealingly slidably installed in the vertical end of the movable cavity, a spring for resetting the top block is fixedly installed inside the movable cavity, a movable column is sealingly slidably installed in the horizontal end of the movable cavity, and a bottom plate is fixed to the bottom of the mounting groove by bolts.

[0012] Preferably, a sliding groove is provided on the inner wall of the movable groove, an anti-slip block is fixed on the side wall of the movable column, and the anti-slip block is slidably arranged in the sliding groove.

[0013] Preferably, the elastic capsule is filled with dry powder.

[0014] Preferably, support blocks are symmetrically fixed on the inner wall of the collection box, and the bottom edge of the support frame overlaps the top of the support block.

[0015] Preferably, the mounting groove is configured as a convex shape.

[0016] Preferably, a rectangular enclosure is fixed on the support plate, and the enclosure is arranged on the outside of the oil leakage hole.

[0017] The construction method of the mountain photovoltaic box transformer foundation adopts the above-mentioned mountain photovoltaic box transformer foundation and comprises the following steps:

[0018] S1: Lay a concrete foundation in the soil, then fix the columns on the foundation, then fix the support plate on the top of the columns, and finally fix the stairs on the side of the support plate;

[0019] S2: Install the elastic bag filled with dry powder into the installation groove from the bottom of the top plate, then fix the bottom plate to the bottom of the installation groove by bolts, squeeze the bottom plate to make the top of the elastic bag protrude outward, and at the same time, the elastic bag squeezes the movable column to make the end of the top block protrude into the movable cavity;

[0020] S3: overlap the support frame on the top of the support block, and then install the top plate on the top of the support block;

[0021] S4: Fix the photovoltaic box transformer body on the top of the support plate, then carry out wiring and connect the photovoltaic box transformer body with related equipment.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The mountain photovoltaic box transformer foundation and construction method described in the present invention are provided with an oil recovery component to recover leaked oil. When a failure occurs in the photovoltaic box transformer body and causes oil leakage, the oil can flow into the collection box below through the oil leakage hole to prevent the oil from flowing freely and polluting the surrounding environment. In addition, the leaked oil is collected by the collection box and then introduced into the container through the oil drain pipe. The container can be an oil barrel that is easy to carry. In this way, the leaked oil can be recovered and reused to avoid wasting oil.

[0024] 2. The mountain photovoltaic box transformer foundation and construction method described in the present invention, by setting a top plate, a support frame, an elastic bag and a top block structure, the top plate is lifted up by the top block, so that there is a gap between the top plate and the bottom of the support block, so that the oil can flow into the interior of the collection box through the gap, and the volume allowed to pass through the gap is very small, which can prevent fallen leaves, packaging bags and other debris from being blown into the collection box by the wind, and prevent the oil drain pipe from being blocked; when the photovoltaic box transformer body fails and generates sparks, once the sparks ignite the oil on the surface, the high temperature generated will cause the elastic bag to rupture instantly and the internal gas will leak. At this time, under the pull-back action of the spring, the top block retracts into the active cavity. At this time, under the action of gravity, the top plate falls and fits tightly in the middle of the support frame, which can close the middle groove of the support frame, thereby sealing the collection box, which can effectively prevent the flames from spreading to the inside of the collection box and causing greater losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 is a stereogram of the present invention;

[0027] Figure 2 is a cross-sectional view of the present invention;

[0028] Figure 3 yes Figure 2 A schematic diagram of the structure enlargement in the middle;

[0029] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0030] Figure 5 is a schematic diagram of the top plate and the bottom of the support frame of the present invention;

[0031] Figure 6 It is a flow chart of the construction method of the present invention.

[0032] In the figure: 1. support plate; 2. column; 3. stairs; 4. photovoltaic box transformer body; 5. oil leakage hole; 6. enclosure; 7. collection box; 8. top plate; 9. fixing plate; 10. elastic bag; 11. oil drain pipe; 12. support frame; 13. support block; 14. through groove; 15. movable cavity; 16. top block; 17. spring; 18. movable column; 19. bottom plate; 20. slide groove; 21. anti-drop block; 22. installation groove. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Embodiment 1: Figures 1 to 5 As shown, the mountain photovoltaic box-type transformer foundation described in the embodiment of the present invention includes:

[0035] A base, the base comprising a support plate 1, columns 2 are fixed around the bottom of the support plate 1, and stairs 3 are fixed on the side of the support plate 1;

[0036] A photovoltaic box transformer body 4, wherein the photovoltaic box transformer body 4 is fixedly installed above the support plate 1;

[0037] An oil recovery component is arranged below the support plate 1, and the oil recovery component includes a collection box 7, which is fixed below the support plate 1 through a fixing plate 9, the top of the collection box 7 is open, an oil drain pipe 11 is fixed to the bottom of the collection box 7, and a plurality of oil leakage holes 5 are provided on the support plate 1; during operation, for the photovoltaic box transformer body 4 using an oil-immersed transformer, when the photovoltaic box transformer body 4 fails and causes oil leakage, the oil can flow into the collection box 7 below through the oil leakage hole 5 to prevent the oil from flowing freely and polluting the surrounding environment. In addition, the leaked oil is collected by the collection box 7, and then the oil is introduced into a container through the oil drain pipe 11. The container can be an oil barrel that is easy to carry, so that the leaked oil can be recovered and reused to avoid wasting oil.

[0038] A support frame 12 is provided on the inner side of the upper part of the collecting box 7, the middle part of the support frame 12 is recessed downward, a through slot 14 is provided in the middle of the support frame 12, the side wall of the support frame 12 is arranged in an inclined shape, a top plate 8 is provided above the support frame 12, top blocks 16 are arranged around the bottom of the top plate 8, the bottom end of the top block 16 is overlapped on the edge of the through slot 14, a mounting groove 22 is provided in the middle of the top plate 8, an elastic capsule 10 is provided in the mounting groove 22, the top of the elastic capsule 10 extends to above the top plate 8, and a convex shape is provided on the top of the elastic capsule 10; During operation, the top plate 8 is lifted up by the top block 16, so that there is a gap between the top plate 8 and the bottom of the support block 13, so that the oil can flow into the collection box 7 through the gap, and the gap allows a very small volume to pass through, which can prevent fallen leaves, packaging bags and other debris from being blown into the collection box 7 by the wind, and prevent the oil drain pipe 11 from being blocked. In addition, by providing an elastic bag 10 with a protruding top, when the leaked oil flows down from the oil leakage hole 5, the oil falls on the top arc surface of the elastic bag 10, the flow speed is accelerated, so that the oil can be smoothly introduced into the gap, which facilitates the oil to flow into the collection box 7.

[0039] An active cavity 15 is provided inside the top plate 8 and at the side of the mounting groove 22. The active cavity 15 is L-shaped. The vertical end of the active cavity 15 extends to the outside of the bottom of the top plate 8. The horizontal end of the active cavity 15 is connected to the active cavity 15. The top block 16 is sealingly and slidably installed in the vertical end of the active cavity 15. A spring 17 for resetting the top block 16 is fixedly installed inside the active cavity 15. An active column 18 is sealingly and slidably installed in the horizontal end of the active cavity 15. The bottom of the mounting groove 22 is fixed with a bottom plate 19 by bolts. When working, during the installation process, the elastic capsule 10 is loaded into the mounting groove 22 from the bottom of the top plate 8, and then the bottom plate 19 is fixed to the bottom of the mounting groove 22 by bolts. The top of the elastic capsule 10 is squeezed outward by the bottom plate 19, and the elastic capsule 10 squeezes the movable column 18, and the air pressure makes the end of the top block 16 protrude into the movable cavity 15, so that the top plate 8 can be lifted up by the top block 16 to form a gap, which is convenient for guiding the oil to flow into the collection box 7; when the photovoltaic box transformer main body 4 fails and causes oil leakage, sparks may also be generated at the same time. The sparks may fall on the surface of the elastic bag 10 below. Once the sparks ignite the oil on the surface, the high temperature generated will cause the elastic bag 10 to rupture instantly, and the internal gas will leak. At this time, under the pull-back action of the spring 17, the top block 16 retracts into the movable cavity 15. At this time, under the action of gravity, the top plate 8 falls and fits tightly in the middle of the support frame 12, so that the middle through groove 14 of the support frame 12 can be closed, thereby sealing the collection box 7, which can effectively prevent the flames from spreading to the inside of the collection box 7 and causing greater losses.

[0040] A slide groove 20 is opened on the inner wall of the movable groove, and an anti-dropping block 21 is fixed on the side wall of the movable column 18, and the anti-dropping block 21 is slidably set in the slide groove 20; when working, the anti-dropping block 21 and the slide groove 20 cooperate to limit the movement range of the movable column 18 and prevent the movable column 18 from falling off from the movable cavity 15.

[0041] The elastic bag 10 is filled with dry powder. When the elastic bag 10 is damaged during operation, the internal gas will carry the internal dry powder and spray out. The dry powder will cover the oil, thereby achieving a fire extinguishing effect and preventing the fire from spreading.

[0042] Support blocks 13 are symmetrically fixed on the inner wall of the collection box 7, and the bottom edge of the support frame 12 is overlapped on the top of the support block 13; when working, the support frame 12 is supported by the support block 13, which is convenient for quick installation and removal of the support frame 12.

[0043] The mounting groove 22 is configured to be convex-shaped; when in operation, the upper opening area of ​​the mounting groove 22 is smaller than the lower opening, which can prevent the elastic bag 10 from detaching from the upper opening, and the top of the elastic bag 10 can be raised by squeezing the bottom plate 19 to form an arc surface so that the oil can flow down along the arc surface; at the same time, the elastic bag 10 is squeezed, and the internal pressure increases, so that when the airbag is damaged, the dry powder can be sprayed out; in addition, when the elastic bag 10 is squeezed, the bag wall becomes relatively hard, thereby effectively supporting the movable column 18.

[0044] Embodiment 2: Figure 1 As shown, compared with Example 1, another embodiment of the present invention is: a rectangular enclosure 6 is fixed on the support plate 1, and the enclosure 6 is arranged on the outside of the oil leakage hole 5; when working, it is to limit the leakage of oil from spreading around, so that the oil flows down along the oil leakage hole 5 and does not exceed the specified range.

[0045] like Figure 6 As shown, the construction method of the mountain photovoltaic box transformer foundation adopts the above-mentioned mountain photovoltaic box transformer foundation and includes the following steps:

[0046] S1: Lay a concrete foundation in the soil, then fix the column 2 on the foundation, then fix the support plate 1 on the top of the column 2, and finally fix the stairs 3 on the side of the support plate 1;

[0047] S2: The elastic capsule 10 filled with dry powder is loaded into the mounting groove 22 from the bottom of the top plate 8, and then the bottom plate 19 is fixed to the bottom of the mounting groove 22 by bolts, and the top of the elastic capsule 10 is pressed outward by the bottom plate 19, and at the same time, the elastic capsule 10 presses the movable column 18, so that the end of the top block 16 protrudes into the movable cavity 15;

[0048] S3: overlap the support frame 12 on the top of the support block 13, and then install the top plate 8 on the top of the support block 13;

[0049] S4: The photovoltaic box transformer body 4 is fixedly installed on the top of the support plate 1, and then wiring is performed to connect the photovoltaic box transformer body 4 with related equipment.

[0050] Working principle: The top plate 8 is lifted up by the top block 16, so that there is a gap between the top plate 8 and the bottom of the support block 13, so that the oil can flow into the collection box 7 through the gap, and the volume allowed to pass through the gap is very small, which can prevent fallen leaves, packaging bags and other debris from being blown into the collection box 7 by the wind, and prevent the oil drain pipe 11 from being blocked. In addition, by setting an elastic bag 10 with a protruding top, when the leaked oil flows down from the oil leakage hole 5, the oil falls on the top arc surface of the elastic bag 10, the flow speed is accelerated, so that the oil can be smoothly introduced into the gap, which is convenient for the oil to flow into the collection box 7; when the photovoltaic box transformer main body 4 fails and causes oil leakage, sparks may also be generated, and fire Sparks may fall onto the surface of the elastic bag 10 below. Once the sparks ignite the oil on the surface, the high temperature generated will cause the elastic bag 10 to rupture instantly and the internal gas to leak. At this time, under the pullback action of the spring 17, the top block 16 retracts into the movable cavity 15. At this time, under the action of gravity, the top plate 8 falls and fits tightly in the middle of the support frame 12, which can close the middle groove 14 of the support frame 12, thereby sealing the collection box 7, which can effectively prevent the flames from spreading to the inside of the collection box 7 and causing greater losses; when the elastic bag 10 is damaged, the internal gas carries the internal dry powder out, and the dry powder covers the oil, which has a fire extinguishing effect and prevents the fire from spreading.

[0051] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Mountain photovoltaic box-type transformer foundation, characterized by: include: A base, the base comprising a support plate (1), columns (2) being fixed around the bottom of the support plate (1), and stairs (3) being fixed on the side of the support plate (1); A photovoltaic box transformer body (4), wherein the photovoltaic box transformer body (4) is fixedly installed above the support plate (1); An oil recovery component is arranged below a support plate (1), and comprises a collection box (7). The collection box (7) is fixed below the support plate (1) via a fixing plate (9), the top of the collection box (7) is open, an oil drain pipe (11) is fixed to the bottom of the collection box (7), and a plurality of groups of oil leakage holes (5) are provided on the support plate (1).

2. The mountain photovoltaic box-type transformer foundation according to claim 1 is characterized by: A support frame (12) is provided on the inner side of the upper part of the collecting box (7), the middle part of the support frame (12) is recessed downwards, a through slot (14) is provided in the middle of the support frame (12), the side wall of the support frame (12) is arranged in an inclined shape, a top plate (8) is provided above the support frame (12), top blocks (16) are arranged around the bottom of the top plate (8), the bottom end of the top block (16) overlaps the edge of the through slot (14), a mounting groove (22) is provided in the middle of the top plate (8), an elastic bag (10) is provided in the mounting groove (22), the top of the elastic bag (10) extends to above the top plate (8), and a protrusion is provided on the top of the elastic bag (10).

3. The mountain photovoltaic box-type transformer foundation according to claim 2 is characterized in that: An active cavity (15) is provided inside the top plate (8) and at a side position of the mounting groove (22); the active cavity (15) is L-shaped; the vertical end of the active cavity (15) extends to the outside of the bottom of the top plate (8); the horizontal end of the active cavity (15) is connected to the active cavity (15); the top block (16) is sealingly slidably installed in the vertical end of the active cavity (15); a spring (17) for returning the top block (16) is fixedly installed inside the active cavity (15); an active column (18) is sealingly slidably installed in the horizontal end of the active cavity (15); and a bottom plate (19) is fixedly installed at the bottom of the mounting groove (22) by bolts.

4. The mountain photovoltaic box-type transformer foundation according to claim 3 is characterized by: A sliding groove (20) is provided on the inner wall of the movable groove, and an anti-slipping block (21) is fixed on the side wall of the movable column (18), and the anti-slipping block (21) is slidably arranged in the sliding groove (20).

5. The mountain photovoltaic box-type transformer foundation according to claim 4 is characterized in that: The elastic bag (10) is filled with dry powder.

6. The mountain photovoltaic box-type transformer foundation according to claim 5 is characterized by: A support block (13) is symmetrically fixed on the inner wall of the collection box (7), and the bottom edge of the support frame (12) overlaps the top of the support block (13).

7. The mountain photovoltaic box-type transformer foundation according to claim 6 is characterized by: The installation groove (22) is configured as a convex shape.

8. The mountain photovoltaic box-type transformer foundation according to claim 7 is characterized by: A rectangular enclosure plate (6) is fixed on the support plate (1), and the enclosure plate (6) is arranged outside the oil leakage hole (5).

9. A construction method for a mountain photovoltaic box-type transformer foundation, the method adopts the mountain photovoltaic box-type transformer foundation of claim 8, characterized in that: The following steps are involved: S1: Lay a concrete foundation in the soil, then fix the column (2) on the foundation, then fix the support plate (1) on the top of the column (2), and finally fix the stairs (3) on the side of the support plate (1); S2: The elastic capsule (10) containing dry powder is loaded into the installation groove (22) from the bottom of the top plate (8), and then the bottom plate (19) is fixed to the bottom of the installation groove (22) by bolts, and the top of the elastic capsule (10) is pressed outward by the bottom plate (19), and at the same time, the elastic capsule (10) presses the movable column (18) so that the end of the top block (16) protrudes into the movable cavity (15); S3: Overlap the support frame (12) on the top of the support block (13), and then install the top plate (8) on the top of the support block (13); S4: The photovoltaic box transformer body (4) is fixedly mounted on the top of the support plate (1), and then wiring is performed to connect the photovoltaic box transformer body (4) with relevant equipment.

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