Building integrated wind power system

Abstract

The invention belongs to the technical field of wind power, and discloses a building integrated wind power system which comprises a building frame structure, a wind power generation system and a wind power generation system. The tower drum vertically penetrates through the central area of the building frame structure and forms an integrated bearing system with the building frame structure; the reinforcing cant beam is arranged on the roof of the top of the building, obliquely supports the tower drum and is used for enhancing the structural strength of the roof; the cabin is arranged at the bottom of the building; the low-speed shaft is located at the top of the tower; and the transmission shaft longitudinally penetrates through the tower drum, and two ends are respectively connected with the low-speed shaft and the high-speed shaft in the cabin. The invention aims to realize more efficient, reasonable, safe and economical utilization of wind energy in the building field.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of wind power, and particularly relates to a building integrated wind power system. BACKGROUND

[0002] As a clean and renewable energy, wind energy has a broad development prospect in the field of building. At present, the application of wind energy in the field of building mainly covers two forms: roof type small wind turbine and traditional large wind turbine. Both of the two forms have many defects in practical application. The roof type small wind turbine is usually directly installed on the roof of the building. This installation method determines that it is only suitable for low-power power generation scenarios. From the structure aspect, the wind turbine bearing structure and the building main structure are separated from each other. In order to ensure the stable operation of the wind turbine, a reinforcing support structure needs to be independently set, such as adding a steel frame. This additional structure setting not only increases the load of the building, but also leads to a substantial increase in construction cost. In the running process, the vibration generated by the wind turbine will be directly transmitted to the building without any buffer, which poses a potential threat to the structural safety of the building and seriously affects the comfort of the occupants. The traditional large wind turbine needs to independently construct a large disc type expansion foundation, the diameter of which can be more than 20 meters. The foundation is separated from the building foundation, which needs to occupy a large amount of land resources. In the structural design, the traditional large wind turbine places the cabin at the top of the tower, which makes the center of gravity of the whole unit too high. SUMMARY

[0003] In view of the problems in the prior art, the present application provides a building integrated wind power system, which aims to realize more efficient, reasonable, safe and economical utilization of wind energy in the field of building.

[0004] In order to solve the above technical problems, the present application is realized by the following technical scheme:

[0005] According to the first aspect of the present application, a building integrated wind power system is provided, comprising:

[0006] The building frame structure is constructed by reinforced concrete frame;

[0007] The tower is vertically through the center area of the building frame structure, and forms an integrated bearing system with the building frame structure;

[0008] The reinforced inclined beam is arranged on the roof surface of the building, and supports the tower in an inclined manner, for enhancing the strength of the roof structure;

[0009] The cabin is arranged at the bottom of the building;

[0010] The low-speed shaft is located at the top of the tower;

[0011] The transmission shaft is longitudinally through the inside of the tower, and the two ends thereof are connected with the low-speed shaft and the high-speed shaft in the cabin, respectively.

[0012] In a possible implementation manner of the first aspect, the tower drum and the building frame structure are integrally formed by cast-in-place reinforced concrete, and share an independent expansion foundation connected by ring beams.

[0013] In a possible implementation manner of the first aspect, a steel embedded part is arranged on the reinforced inclined beam, a middle support section is arranged in the middle section of the tower drum on the upper part of the building roof, and the steel embedded part is connected to the middle support section through an inclined support.

[0014] In a possible implementation manner of the first aspect, the height of the middle support section is lower than the lowest position of the blade tip of the wind turbine blade.

[0015] In a possible implementation manner of the first aspect, a damping device is arranged at the bottom of the building frame structure and the bottom of the tower drum, for absorbing high-frequency vibration.

[0016] In a possible implementation manner of the first aspect, the damping device is a rubber vibration isolation pad or a metal spring.

[0017] In a possible implementation manner of the first aspect, a tunable counterweight is further arranged in the tower drum, for canceling low-frequency resonance energy.

[0018] In a possible implementation manner of the first aspect, a lightning rod is arranged at the top of the tower drum, and a building lightning protection network is connected through a copper cable, and the grounding resistance is less than or equal to 4Ω.

[0019] In a possible implementation manner of the first aspect, an inspection passage is arranged on the building roof layer and the first layer, and the inspection passage is connected to the inside of the tower drum through a fireproof door.

[0020] In a possible implementation manner of the first aspect, a generator and a box-type transformer are integrated in the cabin, and a power transmission chain is formed by a transmission shaft and a low-speed shaft.

[0021] Compared with the prior art, the application has at least the following beneficial effects:

[0022] The building integrated wind power system provided by the application has the advantages that the tower cylinder vertically penetrates the center area of the building frame structure and forms an integrated load-bearing system with the building frame structure, the mode of independently arranging and reinforcing the support structure of the roof type small wind turbine is abandoned, no additional steel frame structure needs to be arranged, the building load is effectively reduced, and the construction cost is greatly reduced. Meanwhile, unlike the traditional large wind turbine which needs to independently construct a large disc type expansion foundation and needs to additionally occupy a large amount of land resources, the building integrated wind power system fully utilizes the building structure itself, does not need to independently construct a large foundation, saves land resources, and improves the land utilization efficiency. The roof surface of the building is arranged with a reinforcing inclined beam to support the tower cylinder in a diagonal direction, the roof structure strength is enhanced, and the structure of the whole building integrated wind power system is more stable. Unlike the roof type small wind turbine which separates the wind turbine load-bearing structure from the building main structure, causing the vibration of the wind turbine to be directly transmitted to the building, threatening the safety of the building structure, the integrated design of the building integrated wind power system can effectively disperse and buffer the vibration generated in the operation of the wind turbine, reduce the influence of the vibration on the building structure, and further improve the structural safety of the building. In addition, the cabin of the building integrated wind power system is arranged at the bottom of the building, compared with the traditional large wind turbine which arranges the cabin at the top of the tower cylinder, causing the center of gravity of the whole unit to be too high, the center of gravity of the system is reduced, the stability of the system is further improved, and the safety hidden danger caused by the too high center of gravity is reduced. The vibration generated in the operation of the roof type small wind turbine is directly transmitted to the building, seriously affecting the comfort of the occupants. The building integrated wind power system can effectively buffer the vibration of the wind turbine, avoid the direct transmission of the vibration to the building, and provide a more quiet and comfortable living environment for the occupants. The building integrated wind power system combines wind energy utilization with the building structure, forms an organic whole, makes the wind energy utilization more in line with the actual demand and environmental characteristics of the building, can be optimized and designed according to the layout of the building and the surrounding wind environment, and realizes efficient capture and conversion of wind energy. In summary, the building integrated wind power system effectively solves the problems in the prior art, and realizes efficient, reasonable, safe and economical utilization of wind energy in the building field.

[0023] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.

[0025] Fig. 1It is a whole schematic view of a building integrated wind power system of the present application.

[0026] Fig. 2 It is a top schematic view of a building integrated wind power system of the present application.

[0027] Fig. 3 It is a fan internal schematic view of a building integrated wind power system of the present application.

[0028] In the figure, 1 is a building frame structure, 2 is a tower drum, 3 is a reinforced inclined beam, 4 is a fan blade, 5 is a middle support section, 6 is a steel embedded part, 7 is an inclined support, 8 is a cabin, 9 is a low-speed shaft, and 10 is a transmission shaft. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0030] In conjunction with Figs. 1 to 3 the drawings, the embodiments of the present application propose a building integrated wind power system, a whole schematic view of which is shown in Fig. 1 , a top schematic view of which is shown in Fig. 2 , and a fan internal schematic view of which is shown in Fig. 3 . Taking a 10-story commercial / office building as an example, the building story height is generally 3.5-4.5 meters, and the total height is about 35-45 meters. The present application mainly consists of a building frame structure 1, a tower drum 2, a reinforced inclined beam 3, a fan blade 4, a middle support section 5, a steel embedded part 6, an inclined support 7, a cabin 8, a low-speed shaft 9, and a transmission shaft 10.

[0031] The building frame structure 1 adopts a reinforced concrete frame structure, the tower drum 2 vertically penetrates the central area of the building frame structure 1, and is solidified with the building frame structure 1 through cast-in-place reinforced concrete to form an integrated load-bearing system, both of which share an independent expansion foundation connected through ring beams. This design replaces the large plate expansion foundation of the traditional fan, greatly reduces the foundation work quantity of the fan, and integrates the load-bearing structure of the fan and the load-bearing structure of the building, which support each other.

[0032] A reinforcing inclined beam 3 is arranged on the roof of the building, which functions to support the tower 2 in an inclined manner and to enhance the strength of the roof structure to bear the additional weight and wind load caused by the operation of the wind turbine. A steel embedded part 6 is arranged on the reinforcing inclined beam 3, and a middle support section 5 is arranged in the middle section of the tower 2 on the upper part of the roof of the building. The steel embedded part 6 is connected with the middle support section 5 through an inclined support 7. When the height of the wind turbine is high, the inclined support 7 can serve as an auxiliary function to support the upper part of the wind turbine. At the same time, the height of the middle support section 5 is lower than the lowest position of the tip of the blade 4 of the wind turbine, so as to avoid affecting the normal rotation of the blade of the wind turbine.

[0033] The cabin 8 is arranged at the bottom of the building (the first floor), and the generator and the box-type transformer are integrated in the cabin 8. The power transmission chain is formed by the transmission shaft 10 and the low-speed shaft 9. The low-speed shaft 9 is arranged at the top of the tower 2, and the transmission shaft 10 longitudinally penetrates the inside of the tower 2 and is connected with the high-speed shaft in the cabin 8 at both ends. This design is beneficial to the daily maintenance and repair of the wind turbine, avoids the need to frequently climb to the top of the tower, reduces the weight of the head of the wind turbine, and is beneficial to reducing the wind load.

[0034] The bottom of the building frame structure 1 and the bottom of the tower 2 are both provided with a damping device, which is a rubber vibration isolation pad or a metal spring, for absorbing high-frequency vibrations generated during strong winds or earthquakes and reducing the influence of vibrations on the building structure. In addition, a tunable counterweight is arranged in the tower 2 to offset low-frequency resonance energy and further improve the stability of the system.

[0035] A lightning rod is arranged at the top of the tower 2, and a copper cable is connected with a lightning protection network of the building, and the grounding resistance is ≤4Ω. This lightning protection system design can effectively protect the building and the wind power system from lightning damage.

[0036] Maintenance channels are arranged on the roof and the first floor of the building, and the maintenance channels are connected with the inside of the tower 2 through fireproof doors. The roof and the first floor can be used as maintenance floors, and the staff can enter the inside of the tower 2 through the fireproof doors to perform daily maintenance work, which is convenient for the maintenance and management of the wind turbine.

[0037] Through the above structural design and measures, the building integrated wind power system of the present application realizes more efficient, reasonable, safe and economic utilization of wind energy in the field of buildings, and overcomes many defects of the existing roof type small wind turbine and traditional large wind turbine.

[0038] Example 1

[0039] A certain science and technology park office building wind power integrated project, the building type is a 10-storey frame structure office building, the total height is 42 meters (the floor height is 4.2 meters), the structure form is reinforced concrete frame, the site condition is a coastal industrial park, and the annual average wind speed is 6.5 m / s.

[0040] A 3.5m diameter reinforced concrete tower is vertically embedded in the building core (next to the elevator shaft) from the underground foundation to 15m above the roof, and is fixed to the building frame columns by cast-in-place concrete.

[0041] The tower shares the extended foundation (18m diameter) with the building, and a 2m x 2m ring beam grid is set in the foundation to reduce the concrete usage by 15%.

[0042] 8 groups of H-shaped steel diagonal beams (inclination angle 45°) are arranged radially on the roof level, and the ends of the diagonal beams are connected to the middle support section (8m above the roof) of the tower by steel embedded parts.

[0043] The height of the middle support section is determined by CFD simulation (2.3m from the lowest position of the blade tip) to avoid interfering with the operation of the 22m diameter blade.

[0044] The generator cabin is placed in the underground equipment room, integrating permanent magnet synchronous generators and box-type transformers. A carbon fiber transmission shaft (40m long) is set in the tower, and the top is connected to the low-speed shaft (12rpm) through a gear box, and the bottom is connected to the high-speed shaft (1500rpm) in the generator cabin through a shaft coupling.

[0045] 20 groups of rubber vibration isolation pads (stiffness coefficient 500kN / m) are set at the bottom of the tower, and metal spring dampers are added to the bottom of the building frame columns.

[0046] A tunable counterweight (mass 4.5 tons) is hung at the 25m height of the tower, and the counterweight frequency is adjusted to 0.5Hz by a hydraulic system to suppress wind-induced resonance.

[0047] The lightning rod at the top of the tower is connected to the building lightning protection network through a 50mm 2 The grounding resistance is measured to be 3.2Ω.

[0048] Fire doors (fire resistance 1.5h) are set on the roof and the equipment room on the first floor, and a smart inspection robot track is provided inside the tower.

[0049] In the description of the present application, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0050] In addition, the terms "first", "second", etc. are used only for the purpose of description and do not imply or imply relative importance or imply the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0051] In the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0053] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples without contradiction.

[0054] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the present application, the protection scope of the present application is not limited thereto, although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art within the technical range disclosed by the present application, the technical solutions recorded in the foregoing embodiments can still be modified or easily thought of changes, or equivalent replacement of part of the technical features, and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered in the protection scope of the present application.

Claims

1. A building-integrated wind power system, characterized in that: include: Building frame structure (1), using reinforced concrete frame construction; The tower (2) vertically penetrates the central area of ​​the building frame structure (1) and forms an integrated load-bearing system with the building frame structure (1); A reinforcement oblique beam (3) is provided on the roof of the building, obliquely supporting the tower (2) and used to enhance the strength of the roof structure; a cabin (8), arranged at the bottom of the building; A low-speed shaft (9) is located at the top of the tower (2); The transmission shaft (10) runs longitudinally through the interior of the tower (2), and its two ends are respectively connected to the low-speed shaft (9) and the high-speed shaft in the cabin (8).

2. A building-integrated wind power system according to claim 1, characterized in that: The tower (2) and the building frame structure (1) are consolidated into one body by cast-in-situ reinforced concrete, and both share an independent extended foundation, which is connected by a ring beam.

3. The building-integrated wind power system according to claim 1, characterized in that: The reinforced inclined beam (3) is provided with a steel embedded part (6), and the middle section of the tower tube (2) above the roof of the building is provided with a middle support section (5), and the steel embedded part (6) and the middle support section (5) are connected by an inclined brace (7).

4. The building-integrated wind power system according to claim 3, characterized in that: The height of the middle support section (5) is lower than the lowest position of the blade tip of the fan blade (4).

5. The building-integrated wind power system according to claim 1, characterized in that: Shock-absorbing devices are installed at the bottom of the building frame structure (1) and the bottom of the tower (2) to absorb high-frequency vibrations.

6. The building-integrated wind power system according to claim 5, characterized in that: The shock absorbing device is a rubber vibration isolation pad or a metal spring.

7. The building-integrated wind power system according to claim 1, characterized in that: A tunable counterweight is also provided inside the tower (2) for offsetting low-frequency resonance energy.

8. The building-integrated wind power system according to claim 1, characterized in that: The top of the tower (2) is provided with a lightning rod, which is connected to the building lightning protection network via a copper cable, and the grounding resistance is ≤4Ω.

9. The building-integrated wind power system according to claim 1, characterized in that: The roof and the first floor of the building are both provided with maintenance passages, and the maintenance passages are connected to the interior of the tower (2) through fire doors.

10. The building-integrated wind power system according to claim 1, characterized in that: The nacelle (8) is integrated with a generator and a box-type transformer, and a power transmission chain is formed through a transmission shaft (10) and a low-speed shaft (9).

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