A wind-solar hybrid power generation device for an air duct

Abstract

A wind-solar hybrid power generation device for a wind duct, comprising a wind power module, a photovoltaic module, square steel pipes, a waterproof cover plate, a battery pack, and a protective net; the wind power module includes pipelines, impellers, support plates, and shock-absorbing brackets; the wind power module is arranged in the wind duct, and the photovoltaic module is arranged above the wind duct; the support plates are fixed in the inner wall of the wind duct, the shock-absorbing brackets are arranged above the support plates, two pipelines are arranged above the shock-absorbing brackets, and each pipeline sequentially includes a contraction section, a straight pipe section, and an expansion section from bottom to top, and the impellers are arranged in the straight pipe sections of each pipeline; the battery pack is arranged in the space between the pipeline and the inner wall of the wind duct, the waterproof cover plate is arranged above the battery pack, square steel pipes and a protective net are arranged at the upper end of the wind duct, and the photovoltaic module is supported on the square steel pipes.

Description

Technical Field

[0001] The present invention relates to the field of building energy, and particularly to a wind-solar complementary power generation device for air ducts. Background Art

[0002] A building chimney is a natural ventilation technology for buildings. Compared with the mechanical ventilation method, it has good economy, saves energy consumption and building space. Its structural form is to set a vertical shaft space inside the building, with the bottom opening leading to the indoor and the top opening connecting to the outdoor. Its function is to ventilate, discharge smoke and waste gas inside the building to keep the air inside the building fresh. The ventilation principle of the chimney utilizes wind pressure or heat exchange (i.e., using natural energy), or directly uses a fan (using active energy), and it is also possible to set a wind-driven turbine device at the air outlet. Among them, generator blades are also commonly installed in the chimney to utilize wind energy to a certain extent. Photovoltaic panels are also used on the building top.

[0003] In actual engineering practice, the following problems exist:

[0004] First, the conventional practice of building chimneys is to set a wind-driven turbine device at the air outlet. Its ventilation principle is to utilize the natural wind speed in nature to drive the turbine of the fan to rotate and the principle of indoor and outdoor air convection, accelerating and transforming any parallel air flow into a vertically upward air flow to improve the indoor ventilation effect. It does not require electricity, is noise-free, and can operate for a long time. At the same time, a power generation device is set in the air duct, but the power generation efficiency of the chimney still needs to be improved.

[0005] Second, the existing solar photovoltaic panels have a need for a rotation angle. In recent years, it has been relatively common to use hydraulic cylinders as the power to control the rotation. For example, in the Solar Decathlon 2010, the VGN team from the United States won the first place by using the technology of controlling the rotation of photovoltaic panels with hydraulic cylinders; however, the problems existing in the existing technology of controlling the rotation of photovoltaic panels with hydraulic cylinders are as follows: Under normal conditions, the three cylinders are located under the photovoltaic panel to play a supporting role. The best solution should be that the hydraulic cylinder supports the piston rod by a fixed structure rather than by supplying oil to support the piston rod; when the piston rod is supported by a fixed structure and the three cylinders cooperate to control the rotation angle of the photovoltaic panel, one side cylinder does not move, the lifting distance of the opposite side cylinder is too large, and the lifting distance of the middle cylinder is moderate. The too large lifting distance may cause problems such as the specification size and stability of the three hydraulic cylinders.

[0006] III. For the precision servo hydraulic cylinder in the prior art, the position is set through a sensor controller, and the position is determined by means of the oil supply amount. The oil supply amount is controlled by opening and closing a valve. However, controlling the position by the oil supply amount is inaccurate. For example, the undesirable oil amount changes caused by signal control delay, opening and closing delay, residual oil amount, etc. will make the oil supply amount inaccurate. Moreover, the larger the diameter of the corresponding pipeline, the greater the oil amount change and the less accurate the control. However, for traditional hydraulic cylinders, it is impossible to set the diameters of the oil inlet and outlet channels too small.

[0007] IV. The limit structure in the prior art can only achieve fixed limiting and cannot achieve selectable limiting: limiting in some cases and not limiting in some cases. If multiple situations are to be made universal, active control means may be needed, increasing the cost.

[0008] V. For the hydraulic cylinder in the prior art, if long-distance telescoping is to be achieved, it needs to be realized by means of the extension of the oil passage cavity. The more hydraulic oil is provided and the longer the cavity is, the longer the extension distance is. However, this requires a hydraulic cylinder of appropriate size and also more hydraulic oil. The longer the oil is passed through, the longer the response time for the oil to reach the position, the slower the response, and the higher the cost.

[0009] VI. The hydraulic cylinder in the prior art has only one piston and has a single function, only capable of achieving the stroke function. SUMMARY OF THE INVENTION

[0010] To overcome the above problems, the present invention proposes a solution to simultaneously solve the above multiple problems.

[0011] The technical solution adopted by the present invention to solve its technical problems is: a wind-solar hybrid power generation device for a wind duct, comprising a wind power module, a photovoltaic module, a square steel pipe, a waterproof cover plate, a battery pack, and a protective net; the wind power module includes a pipeline, an impeller, a support plate, and a shock-absorbing bracket; the wind power module is arranged in the wind duct, and the photovoltaic module is arranged above the wind duct; the support plate is fixed in the inner wall of the wind duct, the shock-absorbing bracket is arranged above the support plate, two pipelines are arranged above the shock-absorbing bracket, and each pipeline sequentially includes a contraction section, a straight pipe section, and an expansion section from bottom to top. The impeller is arranged in the straight pipe section of each pipeline; the battery pack is arranged in the space between the pipeline and the inner wall of the wind duct, the waterproof cover plate is arranged above the battery pack, the upper end of the wind duct is provided with a square steel pipe and a protective net, and the photovoltaic module is supported on the square steel pipe;

[0012] The photovoltaic module includes a photovoltaic panel and a hydraulic cylinder. The number of hydraulic cylinders is three, and the three hydraulic cylinders are arranged along the length direction of the photovoltaic panel and supported below the photovoltaic panel; the hydraulic cylinder includes a piston rod, a piston block, a connecting rod, a support plate, a housing, an upper cavity, a middle cavity, a lower cavity, an upper cavity opening, a lower cavity opening, a control valve, a spacer ring, a support ring, an outer piston, an inner cavity, a slider, a spring, a discharge passage, a holding cylinder, and a flow passage.

[0013] An isolation ring and a support ring are arranged inside the housing. An upper cavity is formed above the isolation ring, a middle cavity is formed between the isolation ring and the support ring, and a lower cavity is formed below the support ring. The outer piston includes a cylindrical part, and a flange part extends outward from the outer wall of the cylindrical part. Under normal conditions, the flange part is supported on the support ring, the outer wall of the cylindrical part abuts against the inner wall of the isolation ring, an inner cavity is arranged inside the cylindrical part, the piston rod, the piston block, the connecting rod, and the support plate are connected in sequence from top to bottom to form an integral rod, and the connecting rod passes through the outer piston to the lower part of the outer piston; a sliding cavity is arranged inside the cylindrical part, the spring is located inside the sliding cavity, the slider is connected to the inner end of the spring, under normal conditions, the piston block is supported on the slider, a flow passage is arranged inside the piston block, an upper cavity port is arranged on the housing corresponding to the upper cavity, a lower cavity port is arranged corresponding to the lower cavity, and an oil drain port is arranged at the position corresponding to the middle cavity. The diameter of the oil drain port is smaller than that of the upper cavity port. The oil drain port is connected to an oil drain pipe, and a control valve is arranged on the oil drain pipe. A discharge passage is arranged inside the outer piston. Under normal conditions, the discharge passage connects the inner cavity and the oil drain port; a holding cylinder is arranged above the housing to hold the piston rod;

[0014] When the upper cavity port is supplied with oil, the oil liquid enters the inner cavity through the flow passage to push the slider outward, so that the slider no longer supports the piston block, and the piston block drops into the inner cavity to realize the descent of the piston rod. When the support plate abuts against the lower wall of the housing, the outer wall of the piston block still abuts against the slider.

[0015] Preferably, when the piston block enters the inner cavity, the control valve opens; or after the upper cavity is supplied with oil for a period of time, the control valve opens.

[0016] Preferably, the sliding cavity includes a step, and the slider includes a step to prevent the slider from slipping out of the sliding cavity. The number of the springs is four, and the number of the sliders is four.

[0017] Preferably, when the upper cavity port is supplied with oil, the discharge passage still connects the inner cavity and the oil drain port.

[0018] Preferably, when the lower cavity is supplied with oil, the outer piston rises, and the support plate also rises.

[0019] Preferably, when the outer piston rises, the slider still supports the piston block.

[0020] Preferably, a protrusion is arranged below the support plate, and when the lower cavity is supplied with oil, the piston block can be lifted and reset above the slider.

[0021] Preferably, under normal conditions, oil liquid can be introduced into the lower cavity to lift the piston block and reset it above the slider.

[0022] Preferably, under normal conditions, the oil liquid in the lower cavity does not contact the bottom surface of the outer piston.

[0023] Preferably, the diameter of the oil drain port is smaller than that of the lower cavity port.

[0024] The beneficial effects of the present invention are as follows:

[0025] First, in response to the first point raised in the background art, a wind power generation component module is adopted, which consists of a wind power augmentation pipeline, a wind turbine generator, a storage battery, and a fan controller. The principle of the wind power augmentation pipeline is to utilize the Venturi effect. At the narrowest part of the pipeline, the speed reaches the maximum value. The air intake channel is set in the form of a Venturi tube, and a wind power generation device is set at the narrowest part of the channel to achieve the purpose of improving the utilization rate of wind energy; at the same time, a photovoltaic panel is used to achieve the complementarity of micro-wind and photovoltaic power generation.

[0026] Second, in response to the second point raised in the background art, the three hydraulic cylinders can all be supported by a fixing structure under normal conditions. When they expand and contract, the three hydraulic cylinders not only have a lifting state, but also have a state of shrinking shorter than that in the normal state; thus, on the premise of being supported by the fixing structure under normal conditions, there is one more shrinking state than the prior art, so that the three hydraulic cylinders cooperate in expansion and contraction to adjust the inclination angle of the photovoltaic panel.

[0027] Third, in response to the third point raised in the background art, a new inner cavity is constructed within the piston cavity to accommodate the inner piston part. A throttling discharge passage is separately designed for the inner cavity outside the conventional inlet and outlet of the hydraulic cylinder. The inner cavity is communicated with the discharge passage of a smaller diameter, and the discharge passage is connected to a control valve; thus, when controlling the downward movement position of the piston, it only needs to close the control valve to maintain the liquid level in the inner cavity to make the piston stop moving and determine the position. Due to the smaller size of the discharge passage, even if there are factors such as opening and closing delays, the pressure fluctuation is smaller, so objectively the piston positioning is more accurate.

[0028] Fourth, in response to the fourth point raised in the background art, a self-control limiting structure is designed. This limiting structure can use hydraulic force to switch between the limiting / non-limiting states. A spring slider structure is arranged inside the outer piston. Under normal conditions, the slider supports the piston block and limits its position. There is no liquid in the inner cavity. When liquid is introduced into the upper cavity, the liquid enters the inner cavity through the flow passage in the piston block. At this time, the control valve is closed. When the liquid level in the inner cavity rises, it pushes the slider to move radially outward, so that it no longer supports the piston block, and the piston block falls into the inner cavity. The flow passage opening also enters the inner cavity and is blocked. At this time, the control valve opens to slowly discharge the liquid in the inner cavity, so as to control the liquid level in the inner cavity to control the position of the piston. When the support plate abuts against the lower wall of the housing, the piston block still abuts against the slider to facilitate the return of the piston block.

[0029] V. Regarding the fifth point raised in the background art, a main and auxiliary chamber structure is adopted. The upper chamber and the middle chamber in the cylinder body are separated by a partition ring, and the liquid in the upper chamber cannot flow to the middle chamber. Thus, less liquid can fill the upper chamber. Then, the liquid in the upper chamber drives the piston block to move through a smaller inner chamber, without the need for the large-sized upper chamber to be constantly filled with liquid. Therefore, the movement of the hydraulic cylinder can be achieved with less liquid, with a fast response and without the need for more hydraulic oil.

[0030] VI. Regarding the sixth point raised in the background art, a structure of inner and outer pistons is adopted. The outer piston acts as a base for support under normal conditions and can achieve a lifting movement. The inner piston assembly is used for lifting or lowering. The cooperation of the two can achieve multiple functions such as support, lifting, contraction, and limiting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the drawings and embodiments.

[0032] Figure 1 Front view of the energy device of the present invention

[0033] Figure 2 Schematic diagram of the internal structure of the hydraulic cylinder of the present invention under normal conditions

[0034] Figure 3 Schematic diagram of the internal structure of the hydraulic cylinder of the present invention in the lifted state

[0035] Figure 4 Schematic diagram of the internal structure of the hydraulic cylinder of the present invention in the contracted state

[0036] Figure 5 3D diagram of the wind and photovoltaic hybrid power generation device of the present invention

[0037] In the figures, the reference numerals are as follows:

[0038] 1. Photovoltaic panel, 2. Hydraulic cylinder, 3. Protective net, 4. Power generation device, 5. Structural support, 6. Battery pack, 7. Inner wall of the air duct, 8. Shock-absorbing support, 9. Piston rod, 10. Piston block, 11. Connecting rod, 12. Support plate, 13. Outer shell, 14. Upper chamber, 15. Middle chamber, 16. Lower chamber, 17. Upper chamber opening, 18. Lower chamber opening, 19. Control valve, 20. Partition ring, 21. Support ring, 22. Outer piston, 23. Inner chamber, 24. Slide block, 25. Spring, 26. Discharge passage, 27. Holding cylinder, 28. Flow passage, 29. Sensor, 30. Square steel pipe, 31. Pipeline, 32. Impeller, 33. Support plate, 34. Waterproof cover plate, 35. Shock-absorbing support. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] As shown in the figure: A wind-solar hybrid power generation device for a wind duct, including a wind power module, a photovoltaic module, a square steel pipe, a waterproof cover plate, a battery pack, and a protective net; the wind power module includes a pipeline, an impeller, a support plate, and a shock-absorbing bracket; the wind power module is arranged in the wind duct, and the photovoltaic module is arranged above the wind duct; the support plate is fixed in the inner wall of the wind duct, the shock-absorbing bracket is arranged above the support plate, and two pipelines are arranged above the shock-absorbing bracket. Each pipeline includes a contraction section, a straight pipe section, and an expansion section from bottom to top in sequence, and the impeller is arranged in the straight pipe section of each pipeline; the battery pack is arranged in the space between the pipeline and the inner wall of the wind duct, the waterproof cover plate is arranged above the battery pack, and a square steel pipe and a protective net are arranged at the upper end of the wind duct, and the photovoltaic module is supported on the square steel pipe;

[0040] The photovoltaic module includes a photovoltaic panel and hydraulic cylinders. The number of hydraulic cylinders is three, and the three hydraulic cylinders are arranged along the length direction of the photovoltaic panel and supported below the photovoltaic panel; the hydraulic cylinder includes a piston rod, a piston block, a connecting rod, a support plate, a housing, an upper chamber, a middle chamber, a lower chamber, an upper chamber port, a lower chamber port, a control valve, a separating ring, a support ring, an outer piston, an inner cavity, a slider, a spring, a discharge passage, a retaining cylinder, and a flow passage;

[0041] A separating ring and a support ring are arranged in the housing. An upper chamber is formed above the separating ring, a middle chamber is formed between the separating ring and the support ring, and a lower chamber is formed below the support ring. The outer piston includes a cylindrical part, and a flange part extends outward from the outer wall of the cylindrical part. Normally, the flange part is supported on the support ring, and the outer wall of the cylindrical part abuts against the inner wall of the separating ring. The inner cavity is arranged in the cylindrical part. The piston rod, the piston block, the connecting rod, and the support plate are connected in sequence from top to bottom to form an integral rod, and the connecting rod passes through the outer piston to the lower part of the outer piston; a sliding cavity is arranged in the cylindrical part, the spring is located in the sliding cavity, the slider is connected to the inner end of the spring, and normally the piston block is supported on the slider. A flow passage is arranged in the piston block. An upper chamber port is arranged on the housing corresponding to the upper chamber, a lower chamber port is arranged corresponding to the lower chamber, and an oil discharge port is arranged at the position corresponding to the middle chamber. The diameter of the oil discharge port is smaller than the diameter of the upper chamber port. The oil discharge port is connected to an oil discharge pipe, and a control valve is arranged on the oil discharge pipe. A discharge passage is arranged in the outer piston. Normally, the discharge passage connects the inner cavity and the oil discharge port; a retaining cylinder is arranged above the housing to hold the piston rod;

[0042] When oil enters the upper chamber port, the oil liquid enters the inner cavity from the flow passage to push the slider outward, so that the slider no longer supports the piston block, and the piston block falls into the inner cavity to realize the descent of the piston rod. When the support plate abuts against the lower wall of the housing, the outer wall of the piston block still abuts against the slider.

[0043] As shown in the figure: when the piston block enters the inner cavity, the control valve opens; or after oil is introduced into the upper cavity for a period of time, the control valve opens. The sliding cavity includes steps, and the slider includes steps to prevent the slider from coming out of the sliding cavity. The number of springs is four, and the number of sliders is four. When oil is introduced into the upper cavity port, the discharge passage still connects the inner cavity and the oil drain port. When oil is introduced into the lower cavity, the outer piston lifts, and the support plate also lifts. When the outer piston lifts, the slider still supports the piston block. A protrusion is provided below the support plate, which can lift the piston block to reset above the slider when oil is introduced into the lower cavity. Under normal conditions, oil can be introduced into the lower cavity to lift the piston block to reset above the slider. Under normal conditions, the oil in the lower cavity does not contact the bottom surface of the outer piston. The diameter of the oil drain port is smaller than the diameter of the lower cavity port.

[0044] Regarding the details of how many oil ports the hydraulic cylinder has for oil inlet and outlet respectively, since it is a relatively conventional technology, for example, each oil cavity includes one oil inlet and one oil outlet or each oil cavity has a two-way oil port, which are all common. Therefore, this patent will not elaborate further in terms of space and illustrations.

[0045] The above detailed description is for the specific description of the feasible embodiments of the present invention. This embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or change made without departing from the present invention shall be included in the patent scope of this case.

Claims

1. A wind-solar hybrid power generation device for air ducts, characterized in that: It includes a wind module, a photovoltaic module, a square steel pipe, a waterproof cover, a battery pack, and a protective net; the wind module includes a pipeline, an impeller, a support plate, and a shock-absorbing bracket; the wind module is arranged in the air duct, and the photovoltaic module is arranged above the air duct; the support plate is fixed to the inner wall of the air duct, the shock-absorbing bracket is arranged above the support plate, and two pipelines are arranged above the shock-absorbing bracket, each pipeline including a contraction section, a straight pipe section, and an expansion section from bottom to top, and the straight pipe section of each pipeline is provided with the impeller; the battery pack is arranged in the space between the pipeline and the inner wall of the air duct, a waterproof cover is arranged above the battery pack, a square steel pipe and a protective net are arranged at the upper end of the air duct, and the photovoltaic module is supported on the square steel pipe; The photovoltaic module includes a photovoltaic panel and a hydraulic cylinder. There are three hydraulic cylinders, which are arranged along the length of the photovoltaic panel and supported below the photovoltaic panel. The hydraulic cylinder includes a piston rod, a piston block, a connecting rod, a support plate, a shell, an upper cavity, a middle cavity, a lower cavity, an upper cavity port, a lower cavity port, a control valve, a spacer ring, a support ring, an outer piston, an inner cavity, a slider, a spring, a discharge passage, a retaining cylinder, and a flow passage. A spacer ring and a support ring are provided in the outer shell, an upper cavity is formed above the spacer ring, a middle cavity is formed between the spacer ring and the support ring, and a lower cavity is formed below the support ring. The outer piston includes a cylinder portion, the outer wall of the cylinder portion extends outward to form a flange portion, and the flange portion is supported on the support ring under normal conditions. The outer wall of the cylinder portion abuts against the inner wall of the spacer ring, and the inner cavity is provided in the cylinder portion. The piston rod, piston block, connecting rod, and support plate are connected in sequence from top to bottom to form an integral rod, and the connecting rod passes through the outer piston to the bottom of the outer piston; a sliding cavity is provided in the cylinder portion, and the spring is located in the sliding cavity , the slider is connected to the inner end of the spring, the piston block is supported on the slider in normal state, the flow path is provided in the piston block, the upper cavity is provided with an upper cavity port corresponding to the upper cavity, the lower cavity port is provided with a lower cavity port corresponding to the lower cavity, and an oil drain port is provided at a position corresponding to the middle cavity, the diameter of the oil drain port is smaller than the diameter of the upper cavity port, the oil drain port is connected to an oil drain pipe, a control valve is provided on the oil drain pipe, a discharge passage is provided in the outer piston, and the discharge passage connects the inner cavity and the oil drain port in normal state; a retaining cylinder is provided above the outer casing to retain the piston rod; When oil flows through the upper cavity port, the oil enters the inner cavity from the flow path to push the slider outward, so that the slider no longer supports the piston block. The piston block falls into the inner cavity to realize the lowering of the piston rod. When the support plate abuts the lower wall of the outer shell, the outer wall of the piston block still abuts the slider.

2. The wind-solar hybrid power generation device for air ducts according to claim 1, characterized in that: When the piston block enters the inner cavity, the control valve opens; or after oil flows through the upper cavity for a period of time, the control valve opens.

3. The wind-solar hybrid power generation device for air ducts according to claim 1, characterized in that: The sliding cavity includes a step, and the slider includes a step to prevent the slider from falling out of the sliding cavity. The number of the springs is four, and the number of the sliders is four.

4. A wind-solar hybrid power generation device for an air duct according to claim 1, characterized in that: When oil flows through the upper cavity port, the discharge passage still connects the inner cavity and the oil discharge port.

5. The wind-solar hybrid power generation device for air ducts according to claim 1, characterized in that: When oil flows into the lower chamber, the outer piston rises and the support plate also rises.

6. The wind-solar hybrid power generation device for air ducts according to claim 5, wherein: When the outer piston is lifted, the slider still supports the piston block.

7. A wind and photovoltaic hybrid power generation device for an air duct according to claim 1, characterized in that: A protrusion is provided below the pallet, and when oil is passed through the lower cavity, the piston block can be lifted and reset above the slider.

8. A wind-solar hybrid power generation device for an air duct according to claim 1, wherein: Under normal conditions, oil can be passed through the lower cavity to lift and reset the piston block above the slider.

9. A wind and photovoltaic hybrid power generation device for an air duct according to claim 8, characterized in that: Under normal conditions, the oil in the lower cavity does not contact the bottom surface of the outer piston.

10. A wind and photovoltaic hybrid power generation device for an air duct according to claim 1, characterized in that: The diameter of the oil drain port is smaller than the diameter of the lower cavity port.

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