Photovoltaic power generation thermal insulation closed system suitable for sewage treatment plant built in north
By installing a photovoltaic electrical insulation and sealing system with steel structure support frame and reverse hanging film on the pool corridor of the Northern Sewage Treatment Plant, the problems of low water temperature in winter and the susceptibility of photovoltaic modules are solved, temperature stability and algae inhibition are achieved, and the extension of the The service life of the steel structure is reduced, carbon emissions and operation and maintenance costs are improved, and the low-temperature treatment capacity of the sewage treatment plant is improved.
Patent Information
- Application Number
- CN202420389004.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-02-28
AI Technical Summary
Northern sewage treatment plants are difficult to maintain the water temperature of the biological pool under the low temperature environment in winter, resulting in a decrease in microbial activity and affecting the normal operation of the sewage treatment plants. At the same time, photovoltaic modules are difficult to lay on the pool corridor and are susceptible to water vapor corrosion, resulting in the support system being not Stablize.
A photovoltaic electrical insulation and sealing system suitable for northern sewage treatment plants was designed, using steel structure support frames and reverse hanging films. The reverse hanging film is not only used to install photovoltaic components, but also used to insulate and shade, prevent algae from growing, and The combination of steel structure support frame and reverse suspension film solves the problems of water vapor corrosion and insulation.
It effectively maintains the temperature stability of the pool corridor, prevents algae from growing, extends the service life of the steel structure, reduces carbon emissions and operation and maintenance costs, and improves the low-temperature treatment capacity of the sewage treatment plant.
Smart Images
Figure CN222293780U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of sewage treatment plants, and in particular relates to a photovoltaic power generation and heat preservation closed system suitable for sewage treatment plants already built in the north. Background Art
[0002] There is space on top of the main treatment units in the sewage treatment plant, such as the biological treatment tank, secondary sedimentation tank and other structures. Photovoltaic modules can also be installed in the green areas and roofs of office buildings within the plant. Therefore, the basic hardware conditions for installing and using photovoltaic power generation systems in sewage treatment plants are relatively complete.
[0003] As a unit that needs to operate continuously for 24 hours, the sewage treatment plant can make full use of the advantages of the photovoltaic power generation system: during the day, photovoltaic power is used to meet the electricity needs of the sewage treatment plant, achieving immediate use, thereby effectively avoiding peak electricity consumption periods and reducing dependence on traditional power grids; during the off-peak period at night, the plant can store excess electricity or sell it online to reduce the sewage treatment plant's electricity expenses, achieving a win-win situation in economic and environmental benefits.
[0004] However, in actual operation, the installation and operation of photovoltaic modules are quite difficult, including the fact that some pool corridors have large spans and few supports, making it difficult to lay modules and not conducive to operation and maintenance; photovoltaic brackets are easily corroded by water vapor on the pool corridors, resulting in risks such as unstable support system.
[0005] The average winter temperature in northern my country is relatively low, and local sewage treatment plants need to consume a lot of energy to maintain a suitable temperature to keep the microorganisms in the biological pool active. Relevant experiments have shown that the majority of bacteria used in biological sewage treatment are mesophilic bacteria, which have good activity between 15 and 35°C. When the water temperature is lower than 8°C or higher than 35°C, the activity of microorganisms is significantly reduced. In actual operation, the water temperature in northern China is rarely higher than 35°C, and low water temperature in winter is common. When the water temperature is lower than 8°C, the activity of mesophilic bacteria is greatly reduced or even dies. At present, how to control the winter water temperature above 8°C has become an important issue affecting the normal operation of sewage treatment plants in northern my country in winter. Utility Model Content
[0006] The purpose of the utility model is to provide a photovoltaic power generation insulation closed system suitable for existing sewage treatment plants in the north, so as to solve the problems that it is difficult to lay photovoltaic components above the corridors of sewage treatment plants, photovoltaic brackets are easily corroded by water vapor, and the corridors of the pools are difficult to insulate.
[0007] The technical solution of the utility model is: a photovoltaic power generation insulation closed system suitable for the sewage treatment plants built in the north, a steel structure support frame is provided above the pool gallery, an inverted hanging film and photovoltaic modules are installed on the steel structure support frame, and the photovoltaic modules are located above the inverted hanging film.
[0008] As a further improvement of the utility model, the photovoltaic assembly is connected to the inverter, the gateway electric energy meter and the grid-connected cabinet in sequence.
[0009] As a further improvement of the present invention, the steel structure support frame includes a main load-bearing beam, a load-bearing cross beam, a side support beam, a main load-bearing column and a side load-bearing column. The main load-bearing beam and the side support beam are arranged along the length direction of the pool corridor, the side support beams are arranged parallel to both sides of the main load-bearing beam, the main load-bearing columns are arranged at both ends of the main load-bearing beam, the load-bearing cross beam is arranged perpendicular to the main load-bearing beam and arranged along the length direction of the main load-bearing beam, the end of the load-bearing cross beam is connected to the side support beam, the side load-bearing columns are arranged at both ends of the load-bearing cross beam, and the bottoms of the main load-bearing columns and the side load-bearing columns are connected to the top of the side wall of the pool corridor.
[0010] As a further improvement of the present invention, a supporting base is provided at the bottom of the side load-bearing column.
[0011] As a further improvement of the utility model, it also includes a bottom support rod, which is arranged along the side wall of the pool gallery and connected to the side load-bearing columns and the bottom of the main load-bearing columns.
[0012] As a further improvement of the utility model, an oblique support rod is provided between the main load-bearing beam and the bottom of the side load-bearing columns on both sides, a suspension rod is connected below the oblique support rod, and the inverted suspension membrane is installed on the suspension rod.
[0013] As a further improvement of the utility model, the suspension rod is a telescopic structure.
[0014] As a further improvement of the utility model, walkway plates are arranged along the main load-bearing beams.
[0015] The beneficial effects of the utility model are as follows: the utility model arranges an inverted membrane and a photovoltaic module above the pool gallery. On the one hand, the inverted membrane covers the pool gallery, which can keep the pool gallery warm and shade the sun. It can not only effectively keep the internal temperature of the pool gallery stable during the low temperature in winter, but also block the sunlight to prevent the production of algae in the aerobic section, thereby ensuring the stable operation of the sewage treatment plant and ensuring that the effluent water quality meets the standards. On the other hand, the inverted membrane can prevent the overflow of greenhouse gases and corrosive gases generated during the biological treatment of sewage, solves the rust problem caused by the contact between the steel structure and the gas generated during the biological treatment of sewage, extends the service life of the steel structure, and reduces the direct carbon emissions generated by the biological treatment of sewage. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model;
[0017] Figure 2 It is a schematic diagram of the installation of the anti-hanging film in the utility model;
[0018] Figure 3It is a schematic diagram of the operation of the photovoltaic component power generation system in the utility model.
[0019] In the figure: 1- pool corridor; 2- spherical hinge; 3- load-bearing crossbeam; 4- main load-bearing beam; 5- walkway board; 6- support base; 7- bottom support rod; 9- side support beam; 10- side load-bearing column; 11- main load-bearing column; 12- oblique support rod; 13- hanging rod; 14- expansion bolt; 15- anti-hanging membrane; 16- photovoltaic module; 17- inverter; 20- gateway electric energy meter; 21- grid cabinet; 22- steel structure support frame. DETAILED DESCRIPTION
[0020] The utility model is described in detail below in conjunction with the accompanying drawings.
[0021] like Figure 1-3 As shown, a photovoltaic power generation and heat preservation closed system suitable for the existing sewage treatment plants in the north is provided with a steel structure support frame 22 above the pool gallery 1, and an inverted hanging membrane 15 and a photovoltaic module 16 are installed on the steel structure support frame 22, and the photovoltaic module 16 is located above the inverted hanging membrane 15.
[0022] The photovoltaic assembly 16 is connected to the string inverter 17 , the gateway electric energy meter 20 and the grid cabinet 21 in sequence.
[0023] The steel structure support frame 22 includes a main load-bearing beam 4, a load-bearing cross beam 3, a side support beam 9, a main load-bearing column 11 and a side load-bearing column 10. The main load-bearing beam 4 and the side support beam 9 are arranged along the length direction of the pool corridor 1. The side support beam 9 is arranged parallel to both sides of the main load-bearing beam 4. The main load-bearing column 11 is arranged at both ends of the main load-bearing beam 4. The load-bearing cross beam 3 is arranged perpendicular to the main load-bearing beam 4 and arranged along the length direction of the main load-bearing beam 4. The end of the load-bearing cross beam 3 is connected to the side support beam 9. The side load-bearing column 10 is arranged at both ends of the load-bearing cross beam 3. The bottoms of the main load-bearing column 11 and the side load-bearing column 10 are connected to the top of the side wall of the pool corridor 1.
[0024] A support base 6 is provided at the bottom of the side load-bearing column 10 to ensure the load-bearing capacity of the side load-bearing column 10 , the overall stability of the steel structure support frame 22 , and to fix the position of the steel structure support frame 22 .
[0025] It also includes a bottom support rod 7, which is arranged along the side wall of the pool corridor 1 and connected to the bottom of the side load-bearing column 10 and the main load-bearing column 11. The inverter 17 is installed on the bottom support rod 7 at the end.
[0026] An oblique support rod 12 is provided between the main load-bearing beam 4 and the bottom of the side load-bearing columns 10 on both sides, a suspension rod 13 is welded below the oblique support rod 12, and an anti-hanging membrane 15 is installed on the suspension rod 13 through expansion bolts 14 and suspended above the pool gallery 1 to form a cover.
[0027] The main load-bearing beam 4, the load-bearing cross beam 3 and the oblique support rod 12 are connected by a spherical hinge 2. The spherical hinge 2 has high hardness and strength, can withstand large loads and impact forces, and ensure the stability of the rods in all directions.
[0028] The suspension rod 13 is a telescopic structure, and the installation height of the anti-suspended film 15 can be adjusted.
[0029] A walkway plate 5 is provided along the main load-bearing beam 4 to facilitate maintenance and repair of the photovoltaic components 16 .
[0030] The upper part of the corridors in the anaerobic and anoxic zones of the sewage biological treatment pools in the northern region is generally covered with concrete covers, which are not suitable for installing the utility model; while the aerobic section corridor is usually open-air. In order to achieve the improvement of standards and economic benefits of sewage treatment plants in the northern region, it is more appropriate to install the utility model in the aerobic zone pool corridor 1.
[0031] The anti-hanging film 15 adopts a fluorocarbon fiber film with high tensile strength, acid and alkali resistance and corrosion resistance.
[0032] Photovoltaic brackets are welded on the main load-bearing beams 4, the side support beams 9, and the load-bearing cross beams 3, and photovoltaic modules 16 are installed in an array on the photovoltaic brackets at the best incident angle of local sunlight. In order to ensure that each adjacent photovoltaic panel is not blocked and fully receives light, a certain lifting height can be set when installing the front and rear rows of photovoltaic brackets. The total number of photovoltaic modules 16 installed can be increased or decreased depending on the design length, width, and strength of the steel structure support frame 22 and the upper area, shape, and terrain of the pool corridor 1.
[0033] Taking into account the high humidity in the upper part of the pool corridor 1, the photovoltaic modules 16 adopt weather-resistant frameless polycrystalline silicon photovoltaic panels with high light transmittance and good stability. After all of them are installed, they are densely distributed in the form of an array in the upper part of the pool corridor 1 to absorb most of the ultraviolet intensity, prevent the anti-hanging film 15 from being exposed to sunlight for a long time, effectively extend the service life of the anti-hanging film 15, and reduce the probability of green algae forming in the pool.
[0034] The photovoltaic module 16 converts solar energy into direct current. To avoid voltage fluctuations caused by changes in sunlight intensity, a string inverter 17 with a phase and voltage automatic tracking device is used to convert the direct current produced by the photovoltaic module 16 into 380V alternating current, which is then connected to the gateway energy meter 20 to achieve the measurement of photovoltaic power generation and grid power consumption. The gateway energy meter 20 is equipped with a communication interface, which can transmit the collected data and information to the sewage treatment plant power dispatching main station. The measured alternating current is then connected to the grid cabinet 21 in the plant area AC distribution room through cables, and is uniformly dispatched and supplied to the sewage treatment plant. If there is a surplus, the surplus power can be connected to the grid through the grid cabinet to obtain certain economic benefits, while reducing the indirect carbon emissions generated by the sewage treatment plant.
[0035] The utility model combines the photovoltaic module 16 and the inverted hanging film 15, and the two share the steel structure support frame 22, saving construction costs. After the utility model is completed, it can not only realize photovoltaic grid-connected power generation for plant use, but also achieve thermal insulation and sunshade in the aerobic treatment section through the sealing effect of the inverted hanging film 15, so as to maintain the activity of microorganisms in the biological pool, inhibit the growth of algae, and improve the low-temperature treatment performance of northern sewage treatment plants in winter. It can also realize the collection and treatment of greenhouse gases and corrosive gases by installing gas collection pipelines in the system to achieve emission reduction effects.
[0036] The steel structure support frame 22 is used to support the inverted membrane 15, which has high tensile and wind resistance and a large structural span, and is suitable for tank corridors 1 of various shapes in sewage treatment plants.
[0037] The utility model has a simple and reasonable structure and is easy to install and use. The utility model combines the inverted membrane and photovoltaic power generation technology. While effectively improving the low-temperature treatment capacity of sewage treatment plants in northern regions, it can supply photovoltaic power to the plant area to save electricity, and can also inhibit the overflow of harmful gases in the sewage treatment pool and the growth of algae in the pool corridor, saving the operation and maintenance costs of the sewage treatment plant, reducing carbon emissions, and promoting the low-carbon transformation of the municipal sewage treatment industry, opening up a new path for achieving the "dual carbon" goals of the sewage treatment industry.
Claims
1. A photovoltaic power generation and heat preservation closed system suitable for the existing sewage treatment plants in the north, characterized by: A steel structure support frame (22) is provided above the pool gallery (1), an inverted membrane (15) and a photovoltaic module (16) are installed on the steel structure support frame (22), and the photovoltaic module (16) is located above the inverted membrane (15); The steel structure support frame (22) comprises a main load-bearing beam (4), a load-bearing cross beam (3), a side support beam (9), a main load-bearing column (11) and a side load-bearing column (10); the main load-bearing beam (4) and the side support beam (9) are arranged along the length direction of the pool corridor (1); the side support beam (9) is arranged parallel to both sides of the main load-bearing beam (4); the main load-bearing column (11) is arranged at both ends of the main load-bearing beam (4); the load-bearing cross beam (3) is arranged perpendicular to the main load-bearing beam (4) and arranged along the length direction of the main load-bearing beam (4); the end of the load-bearing cross beam (3) is connected to the side support beam (9); the side load-bearing column (10) is arranged at both ends of the load-bearing cross beam (3); and the bottoms of the main load-bearing column (11) and the side load-bearing column (10) are both connected to the top of the side wall of the pool corridor (1); It also includes a bottom support rod (7), which is arranged along the side wall of the pool corridor (1) and connected to the bottom of the side load-bearing column (10) and the main load-bearing column (11); An oblique support rod (12) is provided between the main load-bearing beam (4) and the bottoms of the side load-bearing columns (10) on both sides, a suspension rod (13) is connected below the oblique support rod (12), and the anti-suspension membrane (15) is installed on the suspension rod (13).
2. According to claim 1, a photovoltaic power generation and heat preservation closed system suitable for existing sewage treatment plants in the north is characterized by: The photovoltaic assembly (16) is connected in sequence to an inverter (17), a gateway electric energy meter (20) and a grid-connected cabinet (21).
3. A photovoltaic power generation and heat preservation closed system suitable for existing sewage treatment plants in the north according to claim 1 or 2, characterized in that: A supporting base (6) is provided at the bottom of the side load-bearing column (10).
4. According to claim 3, a photovoltaic power generation and heat preservation closed system suitable for existing sewage treatment plants in the north is characterized by: The suspension rod (13) is a telescopic structure.
5. According to claim 4, a photovoltaic power generation and heat preservation closed system suitable for existing sewage treatment plants in the north is characterized by: A walkway plate (5) is arranged along the main load-bearing beam (4).