Airport photovoltaic box transformer substation and flood drainage ditch combined structure

Abstract

A combined structure of an airport photovoltaic box transformer substation and a flood drainage ditch is characterized in that a groove is dug in the downstream of an airport slope, a vertical retaining wall is arranged between the groove and the upper slope, and a vertical backwater prevention retaining wall is arranged between the groove and the lower slope; a box-type transformer is arranged at the bottom of the groove, drainage pipes are vertically arranged along the retaining wall, an inverted filter geotechnical cloth bag is arranged at a pipe opening, a water outlet extends into a rainwater cover plate open trench, and the rainwater cover plate open trench is arranged on the periphery of a box-type transformer foundation at the bottom of the groove in a digging mode. The ditch bottom slope faces the lower side slope, a flood drainage pipe is arranged at the tail section of the ditch bottom slope and communicated into a flood drainage ditch dug in the lower side slope, and a duckbill valve is further arranged at a pipe opening. A vertical water retaining ridge is further arranged at the top of the retaining wall, intercepting ditches are dug between the groove and the side slopes on the two sides and between the retaining wall and the upper side slope, and the intercepting ditches are communicated with one another and connected to the flood drainage ditch. The structure not only solves the arrangement problem of the airport photovoltaic box transformer substation, but also solves the drainage problem of the airport photovoltaic box transformer substation.

Description

Technical Field

[0001] The utility model belongs to the technical field of airport photovoltaics, and in particular relates to a structure combining an airport photovoltaic box transformer and a flood drainage ditch. Background Art

[0002] The layout of airport photovoltaic box transformers is an important part of airport photovoltaic design. If they are arranged in the flat area on the upper part of the airport slope, the airport clearance requirements must be considered, and the airport clearance is often exceeded. If they are arranged in the airport slope area, the stability of the airport slope must be considered. Therefore, the reasonable layout of box transformers has always been an important problem in the airport photovoltaic design process. In addition, the drainage of airport photovoltaic box transformers is often overlooked in the airport photovoltaic design process. However, poor drainage will cause rainwater to penetrate into the transformer, which may cause production accidents, fires or even explosions in severe cases. The surrounding water system should be fully considered during the design, and the rainwater system should be reasonably designed to drain rainwater to reduce the impact of rainwater on the airport photovoltaic box transformer. Utility Model Content

[0003] The purpose of the utility model is to provide a structure combining an airport photovoltaic box transformer and a flood drainage ditch, which can not only meet the installation position requirements of the airport photovoltaic box transformer, but also meet its drainage requirements to prevent accidents.

[0004] A photovoltaic box transformer and flood drainage ditch combination structure at an airport includes an airport slope, and is characterized in that it also includes a box transformer, a groove, a flood drainage ditch, a retaining wall, a water retaining sill, a water intercepting ditch, a backwater retaining wall and a rainwater cover open ditch. A groove is dug downstream of the airport slope, and the groove naturally divides the airport slope into an upper slope, a lower slope and two side slopes. A vertical retaining wall is arranged between the groove and the upper slope, and the two side slopes are connected by sloping downward toward the groove. A vertical backwater retaining wall is arranged between the groove and the lower slope. , and the anti-backwater retaining wall is higher than the slope of the lower slope; a box transformer foundation is set at the bottom of the groove, and the box transformer is installed on the box transformer foundation; a drainage pipe is arranged vertically along the retaining wall, the water inlet of the drainage pipe is buried in the upper slope, and an anti-filter geotextile bag is set at the pipe mouth, and the water outlet of the drainage pipe extends into the open ditch of the rainwater cover plate. The open ditch of the rainwater cover plate is dug around the box transformer foundation at the bottom of the groove. The bottom of the ditch slopes down to the lower slope and a flood discharge pipe is set at the end to connect to the flood discharge ditch dug in the lower slope. A duckbill valve is also set at the pipe mouth; a vertical water retaining sill is also set on the top of the retaining wall, and the water retaining sill is higher than the slope of the upper slope; intercepting ditches are dug between the groove and the slopes on both sides and between the retaining wall and the upper slope. The intercepting ditches are interconnected and connected to the flood discharge ditch.

[0005] Furthermore, the thickness of the box-type transformer foundation is not less than 0.5m.

[0006] Furthermore, the diameter of the drainage pipe is not less than 100 mm, and the pipe material is UPVC pipe; two drainage pipes are set, and the water inlets of the two drainage pipes are set at different heights.

[0007] Furthermore, the anti-filtration geotextile bag uses a permeable geotextile filled with crushed stones with a particle size of 20-60 mm to wrap the water inlet of the slope drainage pipe.

[0008] Furthermore, the height of the water retaining sill is not less than 0.5m.

[0009] Furthermore, the width of the intercepting ditch is not less than 0.4m.

[0010] Furthermore, the backwater prevention retaining wall is not less than 0.2m higher than the slope surface of the lower side slope.

[0011] Furthermore, the net width and net depth of the open ditch of the rainwater cover plate are not less than 0.3m, and a water inlet cover plate is provided.

[0012] Furthermore, the diameter of the flood discharge pipe is not less than 300 mm, and the elevation of the terminal pipe bottom is not less than 0.3 m above the bottom of the flood discharge ditch; the specification of the duckbill valve is consistent with the diameter of the flood discharge pipe.

[0013] The beneficial effects of the utility model are as follows: the airport photovoltaic box transformer is arranged inside the groove downstream of the airport slope, which solves the problem of excessive clearance of the airport photovoltaic box transformer and the problem of affecting the stability of the airport slope; drainage facilities such as water retaining dams, rainwater cover open ditches, drainage pipes, and flood discharge pipes are arranged, and the threat of rainfall to the airport photovoltaic box transformer is solved through the idea of ​​waterproofing and drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the plan layout of an airport photovoltaic box transformer combined with a drainage ditch structure.

[0015] Figure 2 This is a schematic diagram of the cross-sectional layout of a structure combining an airport photovoltaic box transformer and a flood drainage ditch.

[0016] Figure 3 This is a schematic diagram of the open ditch structure of the rainwater cover.

[0017] Among them: 101-upper slope, 102-side slopes, 103-lower slope, 2-box transformer, 201-box transformer foundation, 3-groove, 4-drainage ditch, 5-retaining wall, 501-drainage pipe, 502-anti-filter geotextile bag, 6-water retaining sill, 7-intercepting ditch, 8-backwater retaining wall, 9-rainwater cover open ditch, 901-water inlet cover, 10-drainage pipe, 11-duckbill valve, DETAILED DESCRIPTION

[0018] Embodiment 1: A photovoltaic box transformer and flood drainage ditch combination structure at an airport is arranged in the airport slope, and the structure comprises a box transformer 2, a groove 3, a flood drainage ditch 4, a retaining wall 5, a water retaining bank 6, a water intercepting ditch 7, a backwater prevention retaining wall 8 and a rainwater cover open ditch 9. A groove 3 is dug downstream of the airport slope, and the groove 3 naturally divides the airport slope into an upper slope 101, a lower slope 103 and two side slopes 102. A vertical retaining wall 5 is arranged between the groove 3 and the upper slope 101; the two side slopes 102 are connected by sloping downward toward the groove 3; a vertical backwater prevention retaining wall 8 is arranged between the groove 3 and the lower slope 103, and the backwater prevention retaining wall 8 is 0.2m higher than the slope surface of the lower slope 103. A box transformer foundation 201 is arranged at the bottom of the groove 3, and the thickness of the box transformer foundation 201 is 0.5m. The box transformer 2 is installed on the box transformer foundation 201. A drainage pipe 501 is arranged vertically along the retaining wall 5, the diameter of the drainage pipe 501 is 100 mm, and the pipe material is UPVC pipe; two drainage pipes 501 are arranged, and the water inlet of the drainage pipe 501 is buried in the upper slope, and the water inlets of the two drainage pipes 501 are respectively arranged at different heights, and an anti-filtration geotextile bag 502 is arranged at the water inlet. The anti-filtration geotextile bag 502 uses a permeable geotextile filled with gravel with a particle size of 20-60 mm to wrap the water inlet of the slope drainage pipe 501; the outlet of the drainage pipe 501 extends into the open ditch 9 of the rainwater cover plate. The open ditch 9 with rainwater cover is dug around the box transformer foundation 201 at the bottom of the groove 3, with a net width and net depth of 0.3m, and a water inlet cover 901 is set. The bottom of the ditch slopes down to the lower slope 103, and a flood discharge pipe 10 is set at the end to connect to the flood discharge ditch 4 dug in the lower slope 103; the diameter of the flood discharge pipe 10 is 300mm, and three pipes are set. The elevation of the bottom of the terminal pipe is 1.0m higher than the bottom of the flood discharge ditch 4, and a duckbill valve 11 is also set at the pipe mouth. The specification of the duckbill valve 11 is DN300. A vertical water retaining sill 6 is also set on the top of the retaining wall 5, and the height of the water retaining sill 6 is 0.5m. Intercepting ditches 7 are dug between the groove 3 and the side slopes 102 on both sides, and between the retaining wall 5 and the upper slope 101. The intercepting ditches 7 are interconnected and connected to the flood drainage ditch 4. The intercepting ditch 7 is 0.4m wide and 0.5m deep, and adopts a mortar-laid block stone trapezoidal open ditch type.

[0019] The rainwater from the upper slope 101 extending into the ground is blocked by the retaining wall 5, and is filtered through the anti-filtration geotextile bag 502 and then discharged into the open ditch 9 of the rainwater cover along the drainage pipe 501, and then discharged into the flood drainage ditch 4 through the flood drainage pipe 10. The surface water of the upper slope 101 flows into the intercepting ditch 7 and is discharged into the flood drainage ditch 4. The accumulated water in the groove 3 also flows into the open ditch 9 of the rainwater cover due to the slope, and then is discharged into the flood drainage ditch 4 through the flood drainage pipe 10. The flood drainage ditch 4 drains the accumulated water. When the accumulated water overflows the flood drainage ditch 4 due to the excessive amount of accumulated water, the overflowed accumulated water is blocked by the backwater prevention retaining wall 8 to prevent it from flowing back into the groove 3.

Claims

1. An airport photovoltaic box transformer and flood drainage ditch combined structure, including an airport slope, characterized in that: It also includes box-type transformers, grooves, flood drainage ditches, retaining walls, water retaining sills, intercepting ditches, backwater retaining walls and rainwater cover open ditches. A groove is dug downstream of the airport slope, and the groove naturally divides the airport slope into an upper slope, a lower slope and two side slopes. A vertical retaining wall is set between the groove and the upper slope. The two side slopes are connected by sloping downward toward the groove. A vertical backwater retaining wall is set between the groove and the lower slope, and the backwater retaining wall is higher than the slope of the lower slope. A box transformer foundation is set at the bottom of the groove, and the box transformer is installed on the box transformer foundation; a drainage pipe is arranged vertically along the retaining wall, the water inlet of the drainage pipe is buried in the upper slope, and an anti-filter geotextile bag is set at the pipe mouth, and the water outlet of the drainage pipe extends into the open ditch of the rainwater cover plate. The open ditch of the rainwater cover plate is dug around the box transformer foundation at the bottom of the groove. The bottom of the ditch slopes down to the lower slope and a flood discharge pipe is set at the end to connect to the flood discharge ditch dug in the lower slope. A duckbill valve is also set at the pipe mouth; a vertical water retaining sill is also set on the top of the retaining wall, and the water retaining sill is higher than the slope surface of the upper slope; intercepting ditches are dug between the groove and the slopes on both sides and between the retaining wall and the upper slope. The intercepting ditches are interconnected and connected to the flood discharge ditch.

2. The airport photovoltaic box transformer and flood drainage ditch combination structure as claimed in claim 1 is characterized in that The thickness of the box-type transformer foundation shall not be less than 0.5m.

3. The airport photovoltaic box transformer and flood drainage ditch combination structure as claimed in claim 1 is characterized in that The diameter of the drainage pipe is not less than 100mm, and the pipe material is UPVC pipe; two drainage pipes are set, and the water inlets of the two drainage pipes are set at different heights.

4. The airport photovoltaic box transformer and flood drainage ditch combination structure as claimed in claim 1 is characterized in that The anti-filtration geotextile bag adopts a permeable geotextile filled with crushed stones with a particle size of 20-60mm to wrap the water inlet of the slope drainage pipe.

5. The airport photovoltaic box transformer and flood drainage ditch combination structure as claimed in claim 1 is characterized in that The height of the water retaining sill is not less than 0.5m.

6. The airport photovoltaic box transformer and flood drainage ditch combination structure as claimed in claim 1 is characterized in that The width of the intercepting ditch shall not be less than 0.4m.

7. The airport photovoltaic box transformer and flood drainage ditch combination structure as claimed in claim 1 is characterized in that The backwater prevention retaining wall is not less than 0.2m higher than the lower slope surface.

8. The airport photovoltaic box transformer and flood drainage ditch combination structure as claimed in claim 1 is characterized in that The net width and net depth of the open ditch of the rainwater cover plate shall not be less than 0.3m, and a water inlet cover plate shall be provided.

9. The airport photovoltaic box transformer and flood drainage ditch combination structure as claimed in claim 1 is characterized in that The diameter of the flood discharge pipe shall not be less than 300 mm, and the elevation of the bottom of the terminal pipe shall not be less than 0.3 m above the bottom of the flood discharge ditch; the specifications of the duckbill valve shall be consistent with the diameter of the flood discharge pipe.

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