CN218325098U - Vertical axis fan transmission system - Google Patents
Vertical axis fan transmission system Download PDFInfo
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- CN218325098U CN218325098U CN202222951433.8U CN202222951433U CN218325098U CN 218325098 U CN218325098 U CN 218325098U CN 202222951433 U CN202222951433 U CN 202222951433U CN 218325098 U CN218325098 U CN 218325098U
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Abstract
The application relates to a vertical axis fan transmission system, which belongs to the technical field of wind power generation equipment, and comprises a main shaft and a driving piece connected with the main shaft through a transmission assembly, wherein the driving piece is provided with an energy conversion assembly. The energy conversion assembly comprises a hydraulic pump, a power input shaft of the hydraulic pump is connected with the driving part, an oil inlet of the hydraulic pump is connected with the oil tank through a first pipeline), an oil outlet of the hydraulic pump is connected with the oil tank through a second pipeline, a hydraulic motor is arranged on the second pipeline, and a power output shaft of the hydraulic motor is connected with a power input shaft of the generator. The hydraulic pump is arranged at the top of the wind power tower, and other components of the energy conversion assembly are arranged on the ground. The system effectively simplifies the structure on the upper part of the fan, improves the problem that the tower of the fan is heavy and light, can reduce the stability requirement on the wind power tower, and simultaneously facilitates the future maintenance.
Description
Technical Field
The application relates to the technical field of wind power generation equipment, in particular to a vertical axis fan transmission system.
Background
Wind power generators are mainly divided into two types, one type is that a rotating shaft of a wind wheel is parallel to the wind direction; the other is a vertical axis wind turbine, in which the axis of rotation of the rotor is perpendicular to the ground or the direction of the wind flow. Compared with a horizontal axis wind driven generator, the vertical axis wind driven generator does not need to face wind when the wind direction changes, so that the structure is simpler, and the gyroscopic force of a wind wheel when the wind wheel faces the wind is also reduced.
In the related art, the rotation of the blades of the vertical axis wind turbine is directly converted into electric energy through a mechanical transmission mechanism, and the power generation equipment is arranged at the top of the wind power tower, so that the condition of heavy weight and light weight is caused, and the stability requirement on the tower is high. In addition, because the power generation equipment is arranged at the top of the wind power tower, a lot of maintenance work in the future also needs to be carried out by climbing the top, and inconvenience exists.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems of high stability requirement and inconvenient maintenance of a wind power tower in the related art, the application provides a vertical shaft fan transmission system.
The application provides one, relate to following technical scheme:
a vertical axis fan transmission system comprises a main shaft and a driving piece connected with the main shaft through a transmission assembly, wherein an energy conversion assembly is arranged on the driving piece;
the energy conversion assembly comprises a hydraulic pump, a power input shaft of the hydraulic pump is connected with the driving part, an oil inlet of the hydraulic pump is connected with an oil tank through a first pipeline), an oil outlet of the hydraulic pump is connected with the oil tank through a second pipeline, a hydraulic motor is arranged on the second pipeline, and a power output shaft of the hydraulic motor is connected with a power input shaft of the generator;
in the energy conversion assembly, only the hydraulic pump is arranged at the top of the wind power tower, and other components of the energy conversion assembly are arranged on the ground.
Through adopting above-mentioned technical scheme, only the hydraulic pump sets up in the upper portion of wind-powered electricity generation pylon, and other most parts all set up in ground, consequently can simplify the superstructure of wind-powered electricity generation pylon to reduce the stability requirement to wind-powered electricity generation pylon, reduction in production cost has also made things convenient for maintenance and maintenance in the future simultaneously.
Optionally, an accumulator is arranged on the second pipeline.
Through adopting above-mentioned technical scheme, produced pulse when can absorbing the hydraulic pump hydraulic oil to guarantee the pressure stability of hydraulic motor input, hydraulic motor's output rotational speed is just invariable relatively like this, realizes stable electric output.
Optionally, a check valve is arranged on the second pipeline at the upstream side of the accumulator.
By adopting the technical scheme, because the hydraulic oil can only flow into the energy accumulator from the hydraulic pump and is reversely cut off, the energy accumulator can be prevented from generating reverse impact on the hydraulic pump, and the hydraulic pump is protected.
Optionally, the energy conversion assembly further comprises a third pipeline for connecting the oil tank and the outlet of the hydraulic pump, and a safety valve is arranged on the third pipeline.
By adopting the technical scheme, the operation safety of the system can be ensured.
Optionally, the number of the driving members is multiple, and a control valve is arranged between the hydraulic motor and the accumulator.
By adopting the technical scheme, the hydraulic motors with different numbers can be operated according to different wind speeds, so that electric energy with different powers can be transmitted outwards.
Optionally, the safety valve adopts an electromagnetic overflow valve.
Through adopting above-mentioned technical scheme, when hydraulic motor was out of work, can make the hydraulic oil that the hydraulic pump sent directly return oil tank, avoid hydraulic oil to generate heat.
Optionally, the control valve is a two-position three-way electromagnetic valve, and a working oil port of the two-position three-way electromagnetic valve is connected with the oil tank through a fourth pipeline.
By adopting the technical scheme, the phenomenon of air suction caused by inertial motion when the hydraulic motor stops rotating can be avoided.
Optionally, the hydraulic pump is a plunger pump.
Through adopting above-mentioned technical scheme, can guarantee the efficiency of hydraulic pump oil, simultaneously because the plunger pump is of high quality, difficult wearing and tearing, consequently can reduce the probability of maintenance of ascending a height.
Optionally, an oil filter is arranged on the first pipeline.
Through adopting above-mentioned technical scheme, can filter the hydraulic oil that carries out in the hydraulic circuit, avoid causing the damage to hydraulic component, the card valve scheduling problem appears.
Optionally, an oil supply pump and an overflow valve connected in parallel with the oil supply pump are arranged on the first pipeline at the upstream side of the oil filter.
By adopting the technical scheme, stable pressure is formed at the outlet of the oil supply pump, and the pressure is the opening pressure of the overflow valve, so that the oil supply to the hydraulic pump is ensured.
In summary, the present application includes at least one of the following advantageous technical effects:
1. this system is through turning into wind energy hydraulic pressure ability, turns into the electric energy with hydraulic pressure ability again to set up parts such as hydraulic motor, oil tank, energy storage ware, generator in ground, effectively simplified the structure on fan upper portion, the problem that the first heavy foot of fan pylon of improvement just so can reduce the stability requirement to wind-powered electricity generation pylon, thereby reduction in production cost has still made things convenient for maintenance and maintenance in the future simultaneously.
2. The energy accumulator can absorb the pulse generated when the hydraulic pump pumps the hydraulic oil, and stable pressure is input, so that the relative stability of the rotating speed of the hydraulic motor is ensured, and the stable output of electric power is realized.
3. The system can operate different numbers of hydraulic motors according to different wind speeds, so that electric energy with different powers is output outwards.
Drawings
FIG. 1 is a system schematic diagram of the wind power system;
FIG. 2 is a schematic view showing a positional relationship between a first gear and a second gear;
FIG. 3 is a schematic view showing a positional relationship between the first gear and the second gear according to the second embodiment;
fig. 4 is a schematic structural diagram of a transmission mechanism in the third embodiment.
Description of the reference numerals: 1. a main shaft; 11. a second gear; 121. a driving pulley; 122. a transmission belt; 2. an impeller; 31. a first gear; 321. a first driven pulley; 322. a second driven pulley; 41. a hydraulic pump; 42. an oil tank; 43. a first pipeline; 431. an oil filter; 432. a cooler; 433. an oil supply pump; 44. a second pipeline; 441. a hydraulic motor; 442. an accumulator; 443. a one-way valve; 444. a control valve; 45. a third pipeline; 451. a safety valve; 46. a fourth pipeline; 47. a bypass branch; 471. an overflow valve; 48. an electric generator.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
Example one
As shown in fig. 1, a vertical axis fan transmission system includes a main shaft 1 and a driving member connected to the main shaft 1 through a transmission assembly, and the transmission assembly can transmit the rotation of the main shaft 1 to the driving member, so as to drive the driving member to rotate. The main shaft 1 is provided with an impeller 2 for providing power for the main shaft 1, and the impeller 2 is rotatably connected with the main shaft 1 through a bearing assembly.
As a specific implementation manner, the driving member in this embodiment is a first gear 31, the transmission component is a second gear 11 fixedly disposed on the main shaft 1, and the first gear 31 is engaged with the second gear 11, so that the rotation of the main shaft 1 is transmitted to the first gear 31 through the second gear 11.
Preferably, the first gear 31 and the second gear 11 in the embodiment are straight gears, and the axes of the first gear 31 and the second gear 11 extend in the vertical direction.
As shown in fig. 1, an energy conversion assembly for converting mechanical energy generated by rotation of the driving member into electrical energy is disposed on the driving member.
The energy conversion assembly comprises a hydraulic pump 41, a power input shaft of the hydraulic pump 41 is connected with the driving part, and the driving part is used as a power element of the hydraulic pump 41 and is used for driving the hydraulic pump 41 to realize the function of pumping oil. An oil inlet of the hydraulic pump 41 is connected with the oil tank 42 through a first pipeline 43, and an oil outlet of the hydraulic pump 41 is connected with the oil tank 42 through a second pipeline 44. The second pipeline 44 is provided with a hydraulic motor 441, and a power output shaft of the hydraulic motor 441 is connected with a power input shaft of the generator 48.
Here, the power input shaft of the hydraulic pump 41 may be directly connected to the driving member, that is, the first gear 31 is coaxially provided with a mounting hole, and the power input shaft of the hydraulic pump 41 is directly inserted into the mounting hole and is in key connection with the mounting hole. The power input shaft of the hydraulic pump 41 can also be indirectly connected with the driving member by means of a coupling or a universal shaft, i.e. the first gear 31 is integrally provided with a rotating shaft coaxially arranged with the first gear 31, and the rotating shaft is connected with the power input shaft of the hydraulic pump 41 by means of the coupling or the universal shaft.
Similarly, the power output shaft of the hydraulic motor 441 may also be directly connected to the generator 48, that is, the generator 48 is a hollow shaft generator 48, and the power output shaft of the hydraulic motor 441 is directly inserted into the hollow shaft of the generator 48. The power output shaft of the hydraulic motor 441 may also be indirectly connected to the generator 48 by means of a coupling or cardan shaft.
Further, the hydraulic pump 41 is a plunger pump.
Further, as shown in fig. 1, an accumulator 442 is provided on the second line 44 on the upstream side of the hydraulic motor 441. The accumulator 442 can effectively absorb pulses generated when the hydraulic pump 41 operates, and plays a role in stabilizing pressure, thereby ensuring the stability of power input of the hydraulic motor 441. Preferably, the accumulator 442 is disposed at the surface.
Further, as shown in fig. 1, a check valve 443 is provided on the second pipe 44 on the upstream side of the accumulator 442, and the check valve 443 allows only hydraulic oil to flow from the hydraulic pump 41 into the accumulator 442. The accumulator 442 may be prevented from reverse-impacting the hydraulic pump 41 by the provision of the check valve 443.
Further, since the wind power plant is located in the field, the environment is relatively harsh, and in order to prevent the hydraulic oil from entering the impurities and further affecting the hydraulic pump 41 and the hydraulic motor 441, as shown in fig. 1, an oil filter 431 is disposed on the first pipeline 43. The hydraulic oil entering the hydraulic circuit can be filtered through the oil filter 431, and the problem of valve blockage is avoided.
Further, as shown in fig. 1, a cooler 432 is provided on the first line 43 on the downstream side of the oil filter 431.
Further, as shown in fig. 1, an oil supply pump 433 is provided in the first pipe line 43 upstream of the oil filter 431, a bypass 47 is provided in parallel with the oil supply pump 433 in the first pipe line 43, and a relief valve 471 is provided in the bypass 47. The reason for this is that, by providing the feed pump 433 and the relief valve 471, a stable pressure, which is the opening pressure of the relief valve 471, can be formed at the outlet of the feed pump 433, thereby ensuring the feeding of the hydraulic pump 41.
Further, as shown in fig. 1, a third pipeline 45 is connected to an outlet of the hydraulic pump 41, and the third pipeline 45 is connected in parallel with the second pipeline 44. A safety valve 451 is arranged on the third pipeline 45, and the safety valve 451 is an overflow valve 471 or an electromagnetic overflow valve 471.
The safety valve 451 can ensure the safety of the system operation, once the hydraulic motor 441 fails and stops rotating, the phenomenon that oil is supplied to the accumulator 442 all the time does not occur, the hydraulic oil pumped by the hydraulic pump 41 returns to the oil tank 42 through the safety valve 451, and the phenomenon that the oil pipe bursts due to overhigh pressure is avoided. When the hydraulic motor 441 can normally operate, the relief valve 471 or the electromagnetic relief valve 471 serving as the relief valve 451 can also establish a stable system pressure, thereby ensuring the stability of the outlet pressure of the hydraulic pump 41.
Further, as shown in fig. 2, a plurality of first gears 31 engaged with the second gear 11 are uniformly arranged outside the second gear 11 along the circumferential direction, and each first gear 31 is provided with a set of energy conversion assembly. As shown in fig. 1, a control valve 444 for controlling the on/off of the second pipeline 44 is arranged on the second pipeline 44 between the accumulator 442 and the hydraulic motor 441.
As a specific implementation manner, six first gears 31 are uniformly arranged on the outer portion of the second gear 11 along the circumferential direction in the present embodiment.
The system adopts a mode that the total output power is dispersed to a plurality of hydraulic motors 441 to respectively drive the generators 48, and then the combined operation is carried out. In this way, it is possible to operate the hydraulic motors 441 in unequal numbers for different wind speeds, thereby delivering electric energy of different powers to the outside.
For an energy conversion assembly, when the control valve 444 is opened, the hydraulic oil pumped by the hydraulic pump 41 enters the hydraulic motor 441 through the accumulator 442, so as to drive the hydraulic motor 441 to drive the generator 48 to generate electricity, and the relief valve 451 plays a role in ensuring the safety of the system. When the control valve 444 is closed, at which time the hydraulic motor 441 is not operated, the hydraulic oil pumped by the hydraulic pump 41 is returned to the oil tank 42 through the relief valve 451.
Preferably, the safety valve 451 is an electromagnetic spill valve 471. Thus, when the control valve 444 is closed and the hydraulic motor 441 does not work, the electromagnetic overflow valve 471 is de-energized, the electromagnetic overflow valve 471 is fully conducted at the moment, and the system pressure cannot be built, so that the oil pumped by the hydraulic pump 41 directly returns to the oil tank 42, and the problem of heating of the hydraulic oil can be reduced.
Further, as shown in fig. 1, the control valve 444 is a two-position three-way solenoid valve, an oil inlet P and an oil return port a of the two-position three-way solenoid valve are connected to the second pipeline 44, and a working oil port T of the two-position three-way solenoid valve is connected to the oil tank 42 through the fourth pipeline 46. Preferably, one end of the fourth pipeline 46 is connected to the working oil port a of the two-position three-way solenoid valve, the other end of the fourth pipeline is communicated to the third pipeline 45, and a connection point of the fourth pipeline 46 and the third pipeline 45 is located on the downstream side of the safety valve 451.
The reason for this is that when the hydraulic motor 441 stops rotating, the hydraulic motor 441 will continue to rotate for a period of time under the action of inertia, and by providing the fourth pipeline 46, after the two-position three-way solenoid valve cuts off the second pipeline 44, although the hydraulic pump 41 cannot supply hydraulic oil to the hydraulic motor 441, the hydraulic motor 441 can suck oil from the oil tank 42 through the fourth pipeline 46, so as to prevent the hydraulic motor 441 from being emptied.
The hydraulic pump 41 is arranged at the top of the wind power tower, and other components of the energy conversion assembly are arranged on the ground. Therefore, the upper structure of the wind power tower can be simplified, most parts fall to the ground, the power generation equipment runs on the ground, the stability requirement on the wind power tower is reduced, and meanwhile, the maintenance and the repair in the future are facilitated.
The implementation principle of the embodiment of the application is as follows: the main shaft 1 drives the second gear 11 to rotate, the second gear 11 directly drives the plurality of first gears 31, the first gears 31 drive the corresponding hydraulic pumps 41, so that the hydraulic oil is pumped into the corresponding accumulators 442 located on the ground, then the accumulators 442 output hydraulic oil with stable pressure, so as to drive the corresponding hydraulic motors 441, and the hydraulic motors 441 drive the corresponding generators 48 to rotate for power generation. The presence of the accumulator 442 enables the rotation speed output by the hydraulic motor 441 to be relatively constant, thereby achieving a relatively stable electric power output.
Example two
As shown in fig. 3, the first gear 31 and the second gear 11 are bevel gears, the axis of the second gear 11 is vertical, the axis of the first gear 31 is horizontal, and the hydraulic pump 41 is located inside the first gear 31 (the side close to the axis of the first gear 31 is the inside). On one hand, the number of the first gears 31 meshed with the second gears 11 can be increased, so that the adjustable range of the electric energy output power is expanded; on the other hand, the hydraulic pump 41 is disposed inside the first gear 31, and the overall structure does not increase in size.
The rest structure is the same as the first embodiment.
EXAMPLE III
As shown in fig. 4, the driving member is a driven pulley, and the transmission assembly includes a driving pulley 121 fixedly disposed on the main shaft 1. The driving pulley 121 is connected to one of the driven pulleys by the transmission belt 122, and for the sake of convenience, the driven pulley connected to the driving pulley 121 by the transmission belt 122 is defined as a first driven pulley 321, and the remaining driven pulleys are defined as second driven pulleys 322. The second driven pulleys 322 are sequentially connected in series through the transmission belt 122 to form a driven wheel set, and one second driven pulley 322 at the end of the driven wheel set is connected with the first driven pulley 321 through the transmission belt 122.
The rest of the structure is the same as the first embodiment.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A vertical axis fan drive system characterized in that: the device comprises a main shaft (1) and a driving piece connected with the main shaft (1) through a transmission assembly, wherein an energy conversion assembly is arranged on the driving piece;
the energy conversion assembly comprises a hydraulic pump (41), a power input shaft of the hydraulic pump (41) is connected with the driving part, an oil inlet of the hydraulic pump (41) is connected with an oil tank (42) through a first pipeline (43), an oil outlet of the hydraulic pump (41) is connected with the oil tank (42) through a second pipeline (44), a hydraulic motor (441) is arranged on the second pipeline (44), and a power output shaft of the hydraulic motor (441) is connected with a power input shaft of a generator (48);
in the energy conversion assembly, only the hydraulic pump (41) is arranged at the top of the wind power tower, and other components of the energy conversion assembly are arranged on the ground.
2. The vertical axis wind turbine drive system of claim 1, wherein: an accumulator (442) is arranged on the second pipeline (44).
3. The vertical axis fan drive system of claim 2, further comprising: a check valve (443) is arranged on the second pipeline (44) at the upstream side of the accumulator (442).
4. A vertical axis fan drive system as claimed in claim 2, wherein: the energy conversion assembly further comprises a third pipeline (45) for connecting the oil tank (42) and the outlet of the hydraulic pump (41), and a safety valve (451) is arranged on the third pipeline (45).
5. The vertical axis fan drive system of claim 4, wherein: the number of the driving parts is multiple, and a control valve (444) is arranged between the hydraulic motor (441) and the accumulator (442).
6. The vertical axis fan drive system of claim 5, wherein: the safety valve (451) adopts an electromagnetic overflow valve (471).
7. The vertical axis fan drive system of claim 5, wherein: the control valve (444) adopts a two-position three-way electromagnetic valve, and a working oil port of the two-position three-way electromagnetic valve is connected with the oil tank (42) through a fourth pipeline (46).
8. The vertical axis fan drive system of claim 1, wherein: the hydraulic pump (41) adopts a plunger pump.
9. The vertical axis wind turbine drive system of claim 1, wherein: an oil filter (431) is arranged on the first pipeline (43).
10. A vertical axis fan drive system as claimed in claim 9, wherein: an oil supply pump (433) and a relief valve (471) which is connected in parallel with the oil supply pump (433) are arranged on the first pipeline (43) at the upstream side of the oil filter (431).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222951433.8U CN218325098U (en) | 2022-11-04 | 2022-11-04 | Vertical axis fan transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222951433.8U CN218325098U (en) | 2022-11-04 | 2022-11-04 | Vertical axis fan transmission system |
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| Publication Number | Publication Date |
|---|---|
| CN218325098U true CN218325098U (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222951433.8U Active CN218325098U (en) | 2022-11-04 | 2022-11-04 | Vertical axis fan transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218325098U (en) |
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2022
- 2022-11-04 CN CN202222951433.8U patent/CN218325098U/en active Active
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