Underground photovoltaic box transformer substation waterproof and drainage system
By designing a system of water blocking dams, anti-overflow floor drains, floor drain connection pipes, emergency drain pumps and emergency drain pipes in underground photovoltaic box transformers, the problems of water infiltration and drainage are solved, and the system's waterproofing and emergency drainage are realized Function, improves safety and reliability, and is suitable for a variety of photovoltaic application scenarios.
Patent Information
- Application Number
- CN202421014540.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The design of the underground photovoltaic box transformer has water infiltration problems, resulting in safety hazards. The existing design is difficult to effectively prevent water from entering and draining timely when rainfall is high.
A system including photovoltaic box transformer, floor pit, ventilation and drainage channels, water blocking dams, anti-overflow floor drain, floor drain connection pipe, water collection well, emergency drain pump and emergency drainage pipe were designed to prevent water from entering and prevent return by blocking dams. The drainage of overflow and floor drain connection pipes, emergency drain pumps and emergency drain pipes are drained to ensure that the water can be discharged to the discharge area in a timely manner.
It effectively solves the waterproof, drainage and emergency drainage problems of underground photovoltaic box transformers, ensures the safety and reliability of the system in the event of heavy rain or accidents, and is suitable for urban distributed photovoltaics and airport photovoltaics.
Smart Images
Figure CN222252174U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of flood control and drainage, and specifically relates to an underground photovoltaic box-type flood control and drainage system. Background Art
[0002] The above-ground box transformer has the disadvantages of occupying a large space, affecting the appearance of the city, and may cause electric shock. The underground photovoltaic box transformer has the advantages of not occupying space, beautifying the urban environment, and having high power supply reliability. Therefore, the application of underground photovoltaic box transformer in the field of photovoltaic power generation is becoming more and more extensive. However, with the application of underground photovoltaic box transformer, some problems have also been brought. One of them is the design of the waterproofing and drainage system of underground photovoltaic box transformer. Conventional design of underground photovoltaic box transformer is mostly considered in terms of waterproofing, that is, preventing water from entering the underground photovoltaic box transformer area. This design cannot guarantee that groundwater will infiltrate into the interior of the underground photovoltaic box transformer, and when the rainfall is large, rainwater will also infiltrate into the interior of the underground photovoltaic box transformer, eventually causing certain safety hazards. Therefore, for the design of the waterproofing and drainage system of the underground photovoltaic box transformer, it is necessary to start from the perspective of waterproofing, drainage and emergency drainage to thoroughly solve the waterproofing and drainage problems of the underground photovoltaic box transformer. Utility Model Content
[0003] The utility model aims to provide an underground photovoltaic box-type waterproofing and drainage system which can meet the needs of waterproofing, drainage and emergency drainage.
[0004] An underground photovoltaic box-type drainage system, characterized in that it includes a photovoltaic box-type transformer, a pit, a ventilation and drainage channel, a water retaining dam, an anti-overflow floor drain, a floor drain connecting pipe, a water collection well, an emergency drainage pump and an emergency drainage pipe;
[0005] The excavation area of the pit is larger than the area of the photovoltaic box transformer. The photovoltaic box transformer is installed in the pit, and the surrounding pit forms a ventilation and drainage channel with a width of not less than 0.6m at the narrowest point; the water retaining dam is set around the upper edge of the pit, higher than the ground and not less than 0.3m in height; anti-backflow floor drains are set at the corners at both ends of the ventilation and drainage channel, and the number is not less than two. The ground slope of the ventilation and drainage channel to the anti-backflow floor drain is not less than 0.005; the anti-backflow floor drain is connected to the water collection wells on both sides of the pit through the floor drain connecting pipe. The floor drain connecting pipe is laid along the drainage direction with a slope of not less than 0.01; the elevation of the bottom of the water collection well is lower than the bottom of the pit, and the height difference is not less than 0.5m. An emergency drainage pump is installed at the bottom of the water collection well and connected to the emergency drainage pipe. The emergency drainage pipe is connected to the discharge area, and a water inlet well cover is set on the top of the water collection well.
[0006] Furthermore, the photovoltaic box transformer is composed of a box transformer foundation, a transformer, a box transformer well and a light box type distribution box. The box transformer foundation is set at the bottom of the pit, the box transformer well is installed on the box transformer foundation, the transformer is installed in the box transformer well, the box transformer well is provided with a top cover, the top surface of the top cover is flush with the bottom surface, and an operation port is opened on the top cover, the operation port covering plate, and the light box type distribution box is installed in the installation groove of the box transformer well top cover.
[0007] Furthermore, the anti-backflow floor drain and the floor drain connecting pipe both use DN100 pipes.
[0008] Furthermore, the emergency drainage pump adopts a fixed autocoupled installation, with a design flow rate of not less than 3L / s, and a head = the difference between the bottom of the collection well and the elevation of the discharge area + the head loss of the emergency drainage pipe + a safety head of 2m.
[0009] The beneficial effects of the utility model are: providing an underground photovoltaic box-type waterproofing and drainage system, preventing water from entering the underground photovoltaic box-type transformer area by setting a water retaining dam, timely draining the water that infiltrates into the underground photovoltaic box-type transformer area to the water collection well by setting an anti-overflow floor drain and a floor drain connecting pipe, and timely pumping and draining the water that enters the underground photovoltaic box-type transformer area during a rainstorm or an accident to the discharge area by an emergency drainage pump and an emergency drainage pipe, comprehensively solving the waterproofing and drainage problems of the underground photovoltaic box-type transformer from the perspectives of waterproofing, drainage and emergency drainage. In addition, the system is easy to arrange and can be flexibly applied to urban distributed photovoltaics, airport photovoltaics and other fields. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a plan layout of an underground photovoltaic box-type waterproofing and drainage system;
[0011] Figure 2 This is a front section layout diagram of an underground photovoltaic box-type waterproofing and drainage system;
[0012] Figure 3 This is a side section layout diagram of an underground photovoltaic box-type waterproofing and drainage system;
[0013] Among them: 1-photovoltaic box transformer, 101-box transformer foundation, 102-transformer, 103-box transformer well, 104-light box distribution box, 2-pit, 3-ventilation and drainage channel, 4-water retaining dam, 5-anti-overflow floor drain, 6-floor drain connecting pipe, 7-water collection well, 71-water inlet well cover, 8-emergency drainage pump, 9-emergency drainage pipe, 10-cover plate. DETAILED DESCRIPTION
[0014] Embodiment 1: An underground photovoltaic box-type drainage and waterproofing system comprises a photovoltaic box-type transformer 1, a pit 2, a ventilation and drainage channel 3, a water retaining dam 4, an anti-backflow floor drain 5, a floor drain connecting pipe 6, a water collection well 7, an emergency drainage pump 8 and an emergency drainage pipe 9; the pit 2 is excavated with an area larger than that of the photovoltaic box-type transformer 1, the photovoltaic box-type transformer 1 is installed in the pit 2, and the surrounding pits 2 form a ventilation and drainage channel 3, the narrowest width of which is not less than 0.6m. The water retaining dam 4 is set around the upper edge of the pit 2, higher than the ground and not less than 0.3m in height; the anti-backflow floor drain 5 is set at the corners of the two ends of the ventilation and drainage channel 3, and the number is not less than two. The ground slope of the ventilation and drainage channel 3 to the anti-backflow floor drain 5 is not less than 0.005, which has the function of anti-backflow; the anti-backflow floor drain 5 is connected to the water collection wells 7 on both sides of the pit 2 through the floor drain connecting pipe 6. The floor drain connecting pipe 6 is laid along the drainage direction with a slope of not less than 0.01. The anti-backflow floor drain 5 and the floor drain connecting pipe 6 both use DN100 pipes. The bottom elevation of the water collection well 7 is lower than the bottom of the pit 2, and the height difference is not less than 0.5m. An emergency drainage pump 8 is installed at the bottom of the water collection well 7, and is connected to the emergency drainage pipe 9. The emergency drainage pipe 9 is connected to the discharge area, and a water inlet cover is set at the top of the water collection well 7.
[0015] The photovoltaic box transformer 1 consists of a box transformer foundation 101, a transformer 102, a box transformer well 103 and a light box type distribution box 104. The box transformer foundation 101 is set at the bottom of the pit 2, the box transformer well 103 is installed on the box transformer foundation 101, the transformer 102 is installed in the box transformer well 103, the box transformer well 103 is provided with a top cover, the top surface of the top cover is flush with the bottom surface, and an operation port is opened on the top cover, the operation port covering plate 10, and the light box type distribution box 104 is installed in the installation groove of the top cover of the box transformer well 103.
[0016] The emergency drainage pump 8 is installed in a fixed autocoupled manner and can pump the water in the water collection well to the discharge area in time. The designed flow rate is not less than 3L / s. The head is determined according to the sum of the elevation of the bottom of the water collection well 7 and the discharge area and the head loss of the emergency drainage pipe 9, and a safety head of not less than 2m is set.
[0017] In this embodiment, the ventilation and drainage channel 3 has a passage width of 1.0m, and two anti-backflow floor drains 5 are provided. The ground slope of the ventilation and drainage channel 3 toward the anti-backflow floor drain 5 is 0.005; the water retaining dam is 0.3m above the ground; the size of the collection well 7 is 1.2m×1.2m, which meets the installation and maintenance requirements of the emergency drainage pump 8, and the elevation of the bottom of the well is 1.0m lower than the ventilation and drainage channel; according to the rainfall, the design flow rate of the emergency drainage pump 8 is 5L / s, the difference in elevation between the bottom of the collection well 7 and the discharge area is 10m, the head loss of the emergency drainage pipe 9 is calculated to be 1.5m, and considering the safety head of 2m, the final head of the emergency drainage pump 8 is 13.5m.
Claims
1. An underground photovoltaic box-type drainage system, characterized by: Including photovoltaic box transformer, pit, ventilation and drainage channel, water retaining dam, anti-overflow floor drain, floor drain connecting pipe, water collection well, emergency drainage pump and emergency drainage pipe; The excavation area of the pit is larger than the area of the photovoltaic box transformer. The photovoltaic box transformer is installed in the pit, and the surrounding pit forms a ventilation and drainage channel with a width of not less than 0.6m at the narrowest point; the water retaining dam is set around the upper edge of the pit, higher than the ground and not less than 0.3m in height; anti-backflow floor drains are set at the corners at both ends of the ventilation and drainage channel, and the number is not less than two. The ground slope of the ventilation and drainage channel to the anti-backflow floor drain is not less than 0.005; the anti-backflow floor drain is connected to the water collection wells on both sides of the pit through the floor drain connecting pipe. The floor drain connecting pipe is laid along the drainage direction with a slope of not less than 0.01; the elevation of the bottom of the water collection well is lower than the bottom of the pit, and the height difference is not less than 0.5m. An emergency drainage pump is installed at the bottom of the water collection well and connected to the emergency drainage pipe. The emergency drainage pipe is connected to the discharge area, and a water inlet well cover is set on the top of the water collection well.
2. The underground photovoltaic box-type waterproofing and drainage system according to claim 1 is characterized in that The photovoltaic box transformer consists of a box transformer foundation, a transformer, a box transformer well and a light box type distribution box. The box transformer foundation is set at the bottom of the pit, the box transformer well is installed on the box transformer foundation, the transformer is installed in the box transformer well, the box transformer well is provided with a top cover, the top surface of the top cover is flush with the bottom surface, and an operation port is opened on the top cover, the operation port covering plate, and the light box type distribution box is installed in the installation groove of the box transformer well top cover.
3. The underground photovoltaic box-type waterproofing and drainage system according to claim 1 is characterized in that The anti-backflow floor drain and the floor drain connecting pipe both use DN100 pipes.
4. The underground photovoltaic box-type waterproofing and drainage system according to claim 1, characterized in that The emergency drainage pump is installed in a fixed autocoupled manner with a flow rate of not less than 3L / s.