Photovoltaic panel integrated well lid type underground space ventilation device

Abstract

The utility model relates to the technical field of municipal infrastructure, in particular to a photovoltaic panel integrated well lid type underground space ventilation device, which comprises a well lid base body adopting a honeycomb sandwich structure, overcomes the defects in the prior art, and comprises a photovoltaic power generation unit which is formed by embedding four monocrystalline silicon photovoltaic panels on the surface of the well lid base body in a matrix, and the ventilation subsystem comprises an axial flow fan which is vertically mounted in the cavity at the bottom of the well lid base body, a quick-release silica gel hose which is connected with an outlet of the fan, and a PID (Proportion Integration Differentiation) speed regulation module. Through optimization of a monocrystalline silicon photovoltaic panel and an MPPT controller, the requirements that the draught fan continuously operates for 6-10 hours, the endurance in rainy days is larger than or equal to 8 hours, the dependence of the mains supply is thoroughly eliminated, a PID speed regulation module is in linkage with a methane sensor, the dynamic adjustment range of the ventilation quantity is 60-100 m / h, compared with a constant-speed draught fan, the invalid energy consumption is reduced by 30%, and reverse osmosis of underground harmful gas is completely eradicated through the anti-reverse-flow valve and IP68 protection design.

Description

Technical Field

[0001] This utility model relates to the field of municipal infrastructure technology, specifically to a photovoltaic panel integrated manhole cover type underground space ventilation device. Background Technology

[0002] With the continuous development and utilization of urban underground space, underground facilities such as underground integrated pipe corridors, underground parking lots, and basements are increasing. However, these underground spaces generally suffer from problems such as poor ventilation and poor air quality. Underground spaces are relatively enclosed with poor air circulation, which can easily accumulate harmful gases and odors, affecting not only the safety of staff and equipment in the underground space, but also potentially threatening the health of people entering the underground space.

[0003] Traditional ventilation methods for underground spaces mainly rely on large ventilation equipment, which usually requires an external power source, resulting in high energy consumption and operating costs. Moreover, the installation and maintenance of traditional ventilation equipment are relatively complex and require a certain amount of underground space, increasing the construction and maintenance costs of underground spaces. In addition, the use of traditional ventilation equipment is greatly limited in some remote areas or underground spaces with unstable power supply.

[0004] To address the problems existing in the above technologies, a photovoltaic panel integrated manhole cover type underground space ventilation device is proposed. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides a photovoltaic panel integrated manhole cover type underground space ventilation device, which overcomes the shortcomings of the prior art and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a photovoltaic panel integrated manhole cover type underground space ventilation device, comprising:

[0007] The manhole cover base adopts a honeycomb sandwich structure, which includes an upper basalt fiber reinforced PET resin layer, an aluminum honeycomb core in the middle layer and a bottom flame-retardant and fireproof coating. The upper surface of the basalt fiber reinforced PET resin layer has anti-slip texture, and the anti-slip texture is set at a 10° tilt angle. The bottom of the manhole cover base is hinged to a manhole cover seat.

[0008] The photovoltaic power generation unit consists of four monocrystalline silicon photovoltaic panels embedded in a matrix on the surface of the manhole cover substrate, with the output terminals of each photovoltaic panel connected in parallel to the MPPT controller.

[0009] The ventilation subsystem includes an axial flow fan vertically installed in the bottom chamber of the manhole cover base, a quick-release silicone hose connected to the fan outlet, and a PID speed control module.

[0010] The energy management module integrates a lithium iron phosphate battery pack, a circuit protection unit, and a battery compartment with an IP68 protection rating.

[0011] During implementation, the manhole cover base is integrally formed by molding process, and a 5mm assembly tolerance is reserved at the embedding position of the monocrystalline silicon photovoltaic panel. When the light intensity is >200W / m², the system prioritizes driving the axial flow fan and storing the remaining power. When the light intensity is insufficient, it automatically switches to battery power to maintain continuous ventilation for ≥8 hours. When the underground methane concentration exceeds 1000ppm, the speed control module increases the fan power to 120% of the rated value.

[0012] As a preferred embodiment of this utility model, the aluminum honeycomb core is anodized to form an Al2O3 protective layer with a thickness of 50μm, the compressive strength of the honeycomb core is ≥120MPa, and the wall thickness of the honeycomb cells is 0.5mm.

[0013] As a preferred technical solution of this utility model, the surface of the photovoltaic power generation unit is covered with a 2mm thick self-cleaning polycarbonate layer with a light transmittance of ≥92%, and the edge of the polycarbonate layer is bonded and fixed to the well cover substrate by a silicone sealing strip.

[0014] As a preferred technical solution of this utility model, the axial flow fan is connected to the bottom of the manhole cover base by bolts with a mounting bracket, and a rubber shock-absorbing pad is provided at the connection. The air inlet of the fan is directly opposite the manhole opening. The air inlet of the axial flow fan is connected to the underground pipe gallery through the manhole opening. The air outlet is connected to the ventilation duct through a quick-release silicone hose. The air inlet of the axial flow fan is equipped with an insect-proof filter.

[0015] As a preferred technical solution of this utility model, the inner wall of the quick-release silicone hose is equipped with a one-way anti-backflow valve made of fluororubber.

[0016] As a preferred technical solution of this utility model, the PID speed control module adjusts the fan speed according to the signal of the underground pipe gallery methane concentration sensor. When the methane concentration is ≤500ppm, the speed is 800r / min, and when the concentration is ≥1000ppm, it is increased to 3000r / min.

[0017] As a preferred technical solution of this utility model, the quick-release silicone hose is fixed to the underground ventilation duct by a snap-fit ​​connector, and the outer layer of the quick-release silicone hose is covered with a stainless steel corrugated sheath.

[0018] As a preferred technical solution of this utility model, the energy management module integrates a WiFi / 4G communication unit to upload power generation, battery SOC and ventilation data to the cloud monitoring platform in real time, and supports remote parameter setting and fault diagnosis.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. Through optimization of monocrystalline silicon photovoltaic panels and MPPT controller, the wind turbine can run continuously for 6 to 10 hours and can continue for ≥8 hours on cloudy or rainy days, completely eliminating the dependence on mains power. Compared with traditional explosion-proof wind turbines, the annual power saving exceeds 1000kWh / unit.

[0021] 2. The PID speed control module is linked to the methane sensor, and the ventilation volume can be dynamically adjusted within a range of 60~100m³ / h, reducing ineffective energy consumption by 30% compared to a fixed-speed fan. The anti-backflow valve and IP68 protection design prevent the backflow of harmful underground gases, and improves the methane concentration control efficiency by 40%. Attached Figure Description

[0022] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0023] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0024] Figure 3 This is a front view schematic diagram of the present utility model;

[0025] Figure 4 For the present utility model Figure 3 Schematic diagram of the cross section at point AA;

[0026] Figure 5 For the present utility model Figure 4 Enlarged view of a portion of point A in the middle;

[0027] Figure 6 For the present utility model Figure 4 A magnified view of a portion of point B in the middle.

[0028] In the diagram: 1. Manhole cover base; 2. Manhole cover seat; 3. Anti-slip texture; 4. Monocrystalline silicon photovoltaic panel; 5. Mounting frame; 6. Axial flow fan; 7. Insect-proof filter; 8. Quick-release silicone hose; 9. One-way anti-backflow valve; 10. Battery compartment; 11. Lithium iron phosphate battery pack; 12. Aluminum honeycomb core; 13. Basalt fiber reinforced PET resin layer; 14. Flame-retardant and fireproof coating. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-6A photovoltaic panel integrated manhole cover type underground space ventilation device, comprising:

[0031] The manhole cover base 1 adopts a honeycomb sandwich structure, including an upper surface layer 13, an aluminum honeycomb core 12 in the middle layer and a flame-retardant and fireproof coating 14 at the bottom. The upper surface of the basalt fiber reinforced PET resin layer 13 has anti-slip texture 3, and the anti-slip texture 3 is set at an overall 10° tilt angle. The bottom of the manhole cover base 1 is hinged to a manhole cover seat 2.

[0032] The photovoltaic power generation unit consists of four monocrystalline silicon photovoltaic panels 4 embedded in a matrix on the surface of the manhole cover substrate 1, with the output terminals of each photovoltaic panel connected in parallel to the MPPT controller.

[0033] The ventilation subsystem includes an axial flow fan 6 vertically installed in the bottom chamber of the manhole cover base 1, a quick-release silicone hose 8 connected to the fan outlet, and a PID speed control module.

[0034] The energy management module integrates a lithium iron phosphate battery pack 11, a circuit protection unit, and a battery compartment 10 with an IP68 protection rating. During implementation, the manhole cover base 1 is integrally formed by molding. A 5mm assembly tolerance is reserved at the embedding position of the monocrystalline silicon photovoltaic panel 4. When the light intensity is >200W / m², the system prioritizes driving the axial flow fan 6 and stores the remaining electricity. When the light intensity is insufficient, the system automatically switches to battery power to maintain continuous ventilation for ≥8 hours. When the underground methane concentration exceeds 1000ppm, the speed control module increases the fan power to 120% of the rated value. The rated power of the axial flow fan 6 is 180W.

[0035] Specifically, the aluminum honeycomb core 12 is anodized to form an Al2O3 protective layer with a thickness of 50μm, the compressive strength of the honeycomb core is ≥120MPa, and the wall thickness of the honeycomb cells is 0.5mm.

[0036] Specifically, the surface of the photovoltaic power generation unit is covered with a 2mm thick self-cleaning polycarbonate layer with a light transmittance of ≥92%, and the edge of the polycarbonate layer is bonded and fixed to the well cover substrate 1 by a silicone sealing strip.

[0037] Specifically, the axial flow fan 6 is connected to the bottom of the manhole cover base 1 by bolts with a mounting bracket 5. A rubber shock-absorbing pad is installed at the connection. The air inlet of the fan is directly opposite the manhole opening. The air inlet of the axial flow fan 6 is connected to the underground pipe gallery through the manhole opening. The air outlet is connected to the ventilation duct via a quick-release silicone hose 8. The air inlet of the axial flow fan 6 is equipped with an insect-proof filter 7.

[0038] Specifically, the inner wall of the quick-release silicone hose 8 is equipped with a one-way anti-backflow valve 9 made of fluororubber.

[0039] Specifically, the PID speed control module adjusts the fan speed according to the methane concentration sensor signal in the underground utility tunnel. When the methane concentration is ≤500ppm, the speed is 800r / min, and when the concentration is ≥1000ppm, the speed is increased to 3000r / min.

[0040] Specifically, the quick-release silicone hose 8 is fixed to the underground ventilation duct using a snap-fit ​​connector, and the outer layer of the quick-release silicone hose 8 is covered with a stainless steel corrugated sheath.

[0041] Specifically, the energy management module integrates a WiFi / 4G communication unit to upload data on power generation, battery SOC, and ventilation volume to the cloud monitoring platform in real time, supporting remote parameter setting and fault diagnosis.

[0042] Working principle: During implementation, the manhole cover base 1 is integrally formed by molding process, and the single crystal silicon photovoltaic panel 4 is embedded with a 5mm assembly tolerance. When the light intensity is >200W / m², the system prioritizes driving the axial flow fan 6 to work and stores the remaining power. When the light intensity is insufficient, it automatically switches to battery power to maintain continuous ventilation for ≥8 hours. When the underground methane concentration exceeds 1000ppm, the speed control module increases the fan power to 120% of the rated value.

[0043] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A photovoltaic panel integrated manhole cover type underground space ventilation device, characterized in that, include: The manhole cover base (1) adopts a honeycomb sandwich structure, including a basalt fiber reinforced PET resin layer (13) on the upper surface, an aluminum honeycomb core (12) in the middle layer and a flame-retardant and fireproof coating (14) at the bottom. Anti-slip texture (3) is formed on the upper surface of the basalt fiber reinforced PET resin layer (13), and the anti-slip texture (3) is set at an overall 10° tilt angle. The bottom of (1) is hinged to a manhole cover seat (2). The photovoltaic power generation unit consists of four monocrystalline silicon photovoltaic panels (4) embedded in a matrix on the surface of the well cover substrate (1), and the output terminals of each photovoltaic panel are connected in parallel to the MPPT controller. The ventilation subsystem includes an axial flow fan (6) vertically installed in the bottom chamber of the manhole cover base (1), a quick-release silicone hose (8) connected to the fan outlet, and a PID speed control module; The energy management module integrates a lithium iron phosphate battery pack (11), a circuit protection unit, and a battery compartment (10) with an IP68 protection rating.

2. A photovoltaic panel integrated manhole cover type underground space ventilation device according to claim 1, characterized in that: The aluminum honeycomb core (12) is anodized to form an Al2O3 protective layer with a thickness of 50μm. The compressive strength of the honeycomb core is ≥120MPa and the wall thickness of the honeycomb pores is 0.5mm.

3. A photovoltaic panel integrated manhole cover type underground space ventilation device according to claim 1, characterized in that: The surface of the photovoltaic power generation unit is covered with a 2mm thick self-cleaning polycarbonate layer with a light transmittance of ≥92%, and the edge of the polycarbonate layer is bonded and fixed to the well cover substrate (1) by a silicone sealing strip.

4. A photovoltaic panel integrated manhole cover type underground space ventilation device according to claim 1, characterized in that: The axial flow fan (6) is connected to the bottom of the manhole cover base (1) by bolts with a mounting bracket (5). A rubber shock-absorbing pad is provided at the connection. The air inlet of the fan is directly opposite the manhole opening. The air inlet of the axial flow fan (6) is connected to the underground pipe gallery through the manhole opening. The air outlet is connected to the ventilation duct through a quick-release silicone hose (8). The air inlet of the axial flow fan (6) is equipped with an insect-proof filter (7).

5. The photovoltaic panel integrated manhole cover type underground space ventilation device according to claim 1, characterized in that: The inner wall of the quick-release silicone hose (8) is equipped with a unidirectional anti-backflow valve (9) made of fluororubber.

6. A photovoltaic panel integrated manhole cover type underground space ventilation device according to claim 1, characterized in that: The PID speed control module adjusts the fan speed according to the methane concentration sensor signal of the underground utility tunnel. When the methane concentration is ≤500ppm, the speed is 800r / min, and when the concentration is ≥1000ppm, the speed is increased to 3000r / min.

7. A photovoltaic panel integrated manhole cover type underground space ventilation device according to claim 1, characterized in that: The quick-release silicone hose (8) is fixed to the underground ventilation duct using a snap-fit ​​connector, and the outer layer of the quick-release silicone hose (8) is covered with a stainless steel corrugated sheath.

8. A photovoltaic panel integrated manhole cover type underground space ventilation device according to claim 1, characterized in that: The energy management module integrates a WiFi / 4G communication unit to upload data on power generation, battery SOC, and ventilation volume to the cloud monitoring platform in real time, supporting remote parameter setting and fault diagnosis.

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