CN110005577B - Fan tower drum with emergency unloading function - Google Patents
Fan tower drum with emergency unloading function Download PDFInfo
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- CN110005577B CN110005577B CN201910304466.3A CN201910304466A CN110005577B CN 110005577 B CN110005577 B CN 110005577B CN 201910304466 A CN201910304466 A CN 201910304466A CN 110005577 B CN110005577 B CN 110005577B
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims description 17
- 241000196324 Embryophyta Species 0.000 claims description 14
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 4
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 4
- 241001330002 Bambuseae Species 0.000 claims description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 4
- 239000011425 bamboo Substances 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007306 turnover Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/80—Arrangement of components within nacelles or towers
- F03D80/88—Arrangement of components within nacelles or towers of mechanical components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a fan tower cylinder with an emergency unloading function, which comprises a tower cylinder body, wherein an unloading air duct transversely penetrating through the tower cylinder body is arranged on the tower cylinder body, an inlet movable air door which is normally closed and can be automatically opened under the action of certain wind load is arranged at an inlet of the unloading air duct, and an outlet movable air door which is normally closed and can be automatically opened under the action of certain wind load is arranged at an outlet of the unloading air duct. The wind driven generator tower drum has the advantages of simple structure, light weight, low manufacturing cost and the like, and can actively reduce the borne load under extreme working conditions and not reduce the wind energy absorption efficiency under normal working conditions.
Description
Technical Field
The invention belongs to the technical field of tower barrels, and particularly relates to a fan tower barrel with an emergency unloading function.
Background
In recent years, the wind power industry in China is rapidly developed, and high-power and ultrahigh-power fans are continuously pushed to the market. With the ever increasing wind turbine power, wind turbine tower heights have increased, from the early 40m to 150m, and tower types have also evolved from rigid towers to semi-flexible towers and flexible towers. In order to ensure that the tower drum can work safely and reliably, the strength of the tower drum not only needs to meet the load requirement of the fan in normal work, but also needs to meet the load requirement under extreme working conditions. The existing fan tower drum mostly meets the load requirement under extreme working conditions from the angle of improving the strength, so that the weight of the tower drum is greatly increased, and the manufacturing cost is obviously increased. In fact, extreme working conditions rarely occur, and even if the extreme working conditions occur, the fan cannot be in a normal working power generation state, so that the problem can be solved by improving the angle of the tower structure of the fan.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provides the fan tower cylinder which is simple in structure, light in weight and low in manufacturing cost, the borne load can be actively reduced under the extreme working condition, and the wind energy absorption efficiency can not be reduced under the normal working condition.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the utility model provides a fan tower section of thick bamboo with urgent uninstallation function, includes tower cylinder body, be equipped with on the tower cylinder body and transversely run through the uninstallation wind channel of tower cylinder body, the entrance in uninstallation wind channel is equipped with the entry movable air door that is in the closed condition usually and can open automatically under certain wind load effect, the exit in uninstallation wind channel is equipped with the export movable air door that is in the closed condition usually and can open automatically under certain wind load effect. When the ambient wind speed is higher than the limit wind speed allowed by the fan tower drum to operate, the inlet movable air door and the outlet movable air door are automatically opened under the action of wind load to conduct the unloading wind channel so as to realize unloading, when the ambient wind speed is recovered to the normal wind speed from the limit wind speed, the inlet movable air door and the outlet movable air door are recovered to the normal closing state, the unloading wind tunnel is automatically closed, the fan tower drum is recovered to the normal work, and in the normal working condition, the absorption efficiency of wind energy can not be reduced by the fan tower drum.
Preferably, the inlet of the unloading air duct is provided with an inlet limiting block for limiting the inlet movable air door to be opened only in one direction, and the outlet of the unloading air duct is provided with an outlet limiting block for limiting the outlet movable air door to be opened only in the same direction as the opening direction of the inlet movable air door. The entrance limiting block and the exit limiting block can limit the entrance movable air door and the exit movable air door to be opened along the same direction, the entrance movable air door can be rapidly opened to switch on the unloading air channel after being opened under certain wind load, and meanwhile, the entrance limiting block and the exit limiting block can prevent the entrance movable air door and the exit movable air door from irregularly overturning or opening and closing under the wind load action to the turnover entrance movable air door and the turnover movable air door, so that the unloading action of the unloading air channel is avoided being influenced.
The fan tower cylinder is preferable, the inlet movable air door and the outlet movable air door respectively comprise a door plate, a rotating shaft, a bearing seat and a torsional spring, the torsional spring is used for driving the door plate to be in a locking closed state, the bearing seat is fixedly arranged on the tower cylinder body, the rotating shaft is arranged on the bearing seat, the door plate is fixedly connected with the rotating shaft, and the torsional spring is arranged on the rotating shaft. Under the normal operating mode, the door plant is in the state of closing the entry and the export in uninstallation wind channel and locking under the effect of torsional spring, after external environment wind load is greater than the locking power of torsional spring, the door plant can revolute the rotation of axes and open, can switch on the uninstallation wind channel and then play the uninstallation effect after the rotatory certain angle of door plant, after the environment wind load reduces, the torsional spring orders about the door plant rotation and seals entry and export to the normal position, avoid influencing the normal work of fan, because switching on of uninstallation wind channel needs get off at extreme operating mode, adopt mechanical structure more reliable, electric control can receive the influence of extreme operating mode and appear malfunctioning condition.
In the above-mentioned fan tower cylinder, preferably, the unloading air duct is a cylindrical passage, the door plate is circular, the diameter of the door plate is d, the thickness of the door plate is h, the axis of the door plate in the horizontal direction is P, and the axis of the rotating shaft is parallel to the axis P of the door plate in the horizontal direction.
In the above-mentioned wind turbine tower barrel, preferably, a distance between the axis of the rotating shaft and the axis P of the door panel in the horizontal direction is 0.1d to 0.15 d. The pivot does not adopt the structure that passes the concentric setting of centre of a circle, but one side setting of partial diameter, the pivot can be divided into one big one little two parts like this, under the wind load effect, compare in little part, big part is rotated and is opened by the wind load more easily, and then can avoid the door plant to open the uninstallation effect that the direction is inconsistent or irregular upset influences the uninstallation wind channel, the sensitivity and the disturbance balance that the door plant was opened are considered, set up the distance between the axis of pivot and door plant axis P between 0.1d ~ 0.15 d.
Preferably, the diameter of the unloading air duct is (d +3h) - (d +4 h). The diameter of uninstallation wind channel slightly is greater than the diameter of door plant, and the purpose is to guarantee that the door plant can rotate smoothly in the uninstallation wind channel, will reduce the clearance between door plant and the uninstallation wind channel as far as possible simultaneously again, guarantees the leakproofness of door plant uninstallation wind channel when closing.
Preferably, the unloading air duct is horizontally arranged, the extending direction of the unloading air duct is consistent with the main wind direction of the fan tower drum during operation, and the inlet movable air door and the outlet movable air door are symmetrically arranged around the central axis of the tower drum body. The arrangement can reduce the resistance in the unloading air channel as much as possible, and the unloading effect is the best after the unloading air channel is conducted.
In the wind turbine tower, the diameter of the cross section of the tower body where the door plate is arranged is L, and the diameter d of the door plate is L (10% -15%), so that the sufficient strength of the tower body is considered, and the pressure relief capacity of the unloading air duct is increased as much as possible.
Preferably, the torsion spring has a locking torque T for enabling the door panel to be in a locking closed state0The locking torque is that when the wind load torque borne by the inlet movable air door or the outlet movable air door is smaller than T0When the door panel is locked and closed, and the wind load torque borne by the inlet movable air door or the outlet movable air door is more than T0The door plate is opened and the locking torque of the unloading air channel is conducted.
Preferably, the locking torque T is greater than the locking torque T of the wind turbine tower0Is T0＝0.05dρv2 2Wherein d is the diameter of the door panel, ρ is the density of air, v2The wind speed is the environmental wind speed under the extreme working condition that the fan needs to be stopped. Through the relation, the locking torque of the torsion spring can be rapidly determined, and the unloading air duct can be normally opened to work under the extreme working condition.
Compared with the prior art, the invention has the advantages that:
the wind driven generator tower cylinder of the invention is provided with an unloading air channel transversely penetrating the interior of the tower cylinder body on the tower cylinder body, the inlet of the unloading air channel is provided with an inlet movable air door, the outlet of the unloading air channel is provided with an outlet movable air door, when the wind driven generator works normally, the inlet movable air door and the outlet movable air door are in a closed state, the unloading air channel is closed, the wind driven generator tower cylinder as a whole does not reduce the absorption efficiency of wind energy, when extreme working conditions occur and the ambient wind speed is greater than the allowable limit wind speed of the tower cylinder, the wind load borne by the tower cylinder body is increased, under the action of the wind load, the inlet movable air door and the outlet movable air door can be automatically opened to conduct the unloading air channel, part of wind passes through the unloading air channel to realize unloading, when the ambient wind speed is recovered from the limit wind speed to the normal wind speed, therefore, the wind load of the wind turbine tower drum at the limit wind speed can be effectively reduced, the working safety of the tower drum is improved, the weight of the tower drum can be reduced, and the wind turbine tower drum has the advantages of simple structure, reliability in use and the like.
Drawings
Fig. 1 is a schematic structural diagram of a tower of a wind turbine according to an embodiment (a state where an unloading air duct is not turned on).
Fig. 2 is a schematic view of the inlet movable damper in the direction a of fig. 1.
FIG. 3 is a left side view schematic structural diagram of a wind turbine tower according to an embodiment.
Fig. 4 is a schematic structural diagram of a tower of a wind turbine according to the embodiment (a state where an unloading air duct is turned on).
Illustration of the drawings:
1. a tower barrel body; 2. unloading the air duct; 21. an inlet movable damper; 211. a door panel; 212. a rotating shaft; 213. a bearing seat; 214. a torsion spring; 22. an outlet movable air door; 23. an inlet stopper; 24. an outlet limiting block.
Detailed Description
In order to facilitate understanding of the invention, the invention will be described more fully and in detail with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
As shown in fig. 1 to 4, the fan tower drum with the emergency unloading function according to the embodiment includes a tower drum body 1, an unloading air duct 2 transversely penetrating through the tower drum body 1 is arranged on the tower drum body 1, an inlet movable air door 21 which is normally closed and can be automatically opened under a certain wind load is arranged at an inlet of the unloading air duct 2, and an outlet movable air door 22 which is normally closed and can be automatically opened under a certain wind load is arranged at an outlet of the unloading air duct 2. Specifically, the main wind direction of the wind turbine tower during operation is the direction from left to right in the drawing, only one unloading wind channel 2 is arranged on the upper portion of the tower body 1, the unloading wind channel 2 penetrates through the tower body 1 from left to right along the front and back symmetrical plane of the tower body 1, the inlet movable air door 21 is a movable air door on the left side in the drawing, the outlet movable air door 22 is a movable air door on the right side in the drawing, and the movable air doors on the left side and the right side are symmetrically arranged at the left end and the right end of the unloading wind channel 2.
In this embodiment, the entrance of the unloading air duct 2 is provided with an entrance limiting block 23 for limiting the entrance movable damper 21 to be opened only in a certain direction, and the exit of the unloading air duct 2 is provided with an exit limiting block 24 for limiting the exit movable damper 22 to be opened only in the same direction as the opening direction of the entrance movable damper 21. Specifically, the outer wall at left side tower cylinder body 1 is installed to entry stopper 23, entry stopper 23 sets up the top position at entry activity air door 21 and blocks partial entry activity air door 21, export stopper 24 installs the outer wall at right side tower cylinder body 1, export stopper 24 sets up the below position at export activity air door 22 and blocks partial export activity air door 22, left entry stopper 23 limits the upper end of entry activity air door 21 and can only produce towards the inside of tower cylinder body 1 and rotate, export stopper 24 on right side limits the lower extreme that exports activity air door 22 and can only produce in the inside of tower cylinder body 1 and rotate, consequently entry activity air door 21 and export activity air door 22 all are restricted to towards clockwise the rotation.
In this embodiment, each of the inlet movable damper 21 and the outlet movable damper 22 includes a door plate 211, a rotating shaft 212, a bearing seat 213, and a torsion spring 214 for driving the door plate 211 to be in a locked closed state, the bearing seat 213 is fixedly disposed on the tower barrel body 1, the rotating shaft 212 is disposed on the bearing seat 213, the door plate 211 is fixedly connected to the rotating shaft 212, and the torsion spring 214 is mounted on the rotating shaft 212. Specifically, there are two bearing seats 213, the two bearing seats 213 are oppositely disposed on the inner wall of the tower body 1, and the torsion spring 214 is installed in the middle of the rotating shaft 212. Specifically, the rotating shaft 212, the bearing housing 213, and the torsion spring 214 are disposed at one side in the discharge air duct.
In this embodiment, the unloading air duct 2 is a cylindrical passage, the door panel 211 is circular, the diameter d of the door panel 211 is 0.6m, the thickness h of the door panel 211 is 0.05m, the axis of the door panel 211 in the horizontal direction is P, and the axis of the rotating shaft 212 is parallel to the axis P of the door panel 211 in the horizontal direction.
In this embodiment, the distance between the axis of the rotating shaft 212 and the horizontal axis P of the door panel 211 is 0.06 m. Specifically, the rotating shaft 212 is disposed right below the axis P of the door panel 211 in the horizontal direction and is parallel to the axis P, and the distance between the rotating shaft 212 and the horizontal axis of the door panel 211 is 0.1d, so that the wind load generates a clockwise turning moment on the door panel 211.
In this embodiment, the diameter of the unloading duct 2 is 0.8 m.
In this embodiment, the unloading air duct 2 is horizontally arranged, the extending direction of the unloading air duct 2 is consistent with the main wind direction of the fan tower drum during operation, and the inlet movable air door 21 and the outlet movable air door 22 are symmetrically arranged about the central axis of the tower drum body 1.
In this embodiment, the diameter L of the cross section of the tower body 1 where the door panel 211 is provided is 5m, and the diameter d of the door panel 211 is 0.6m, where d is 12% L, and satisfies the relation that d is L (10% -15%).
In the present embodiment, the torsion spring 214 has the lock torque T that causes the door panel 211 to be in the lock-off state0The locking torque is that when the wind load torque received by the inlet movable air door 21 or the outlet movable air door 22 is less than T0The door panel 211 is kept in a locked closed state, and the wind load torque applied to the inlet movable damper 21 or the outlet movable damper 22 is larger than T0The door panel 211 is opened and conducts the locking torque of the discharge duct 2.
In this embodiment, since the diameter d of the door 211 is 0.6m, the density ρ of the air is 1.29kg/m3And the environmental wind speed v under the extreme working condition that the fan needs to be stopped2Is 70m/s, and thus can be represented by the formula T0＝0.05dρv2 2Calculating the locking torque T0＝0.05*0.6*1.29*70^2＝189.63N·m。
The working principle of the wind turbine tower cylinder of the embodiment is as follows: when the ambient wind speed is less than v2When the wind load acts on the inlet movable air door 21, the turning moment is smaller than the locking torqueT0The inlet movable air door 21 does not rotate, the unloading air duct 2 is in a closed state, and the tower barrel body 1 normally bears pressure; when the ambient wind speed is greater than v2When the wind load acts on the inlet active air door 21, the turning moment is larger than the locking torque T0The inlet movable air door 21 rotates clockwise under the action of wind load, the left side of the unloading air channel 2 is in an open state, the outlet movable air door 22 also rotates clockwise under the action of wind load in the unloading air channel 2, the unloading air channel 2 is in a conducting state, a part of wind in front of the tower cylinder body 1 enters the unloading air channel 2 through the inlet movable air door 21 and then flows out of the outlet movable air door 22, the load acting on the tower cylinder body 1 is obviously reduced, and the purpose of reducing the load of the tower cylinder body 1 is achieved; when the ambient wind speed is higher than v2Becomes less than v2At this time, the locking torque T of the torsion spring 214 of the inlet and outlet movable dampers 21 and 22 is applied0The tower drum body 1 normally bears pressure until the unloading air duct 2 is closed.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a fan tower section of thick bamboo with urgent uninstallation function, includes tower section of thick bamboo body (1), its characterized in that: the wind power generation device is characterized in that an unloading air duct (2) transversely penetrating through the tower drum body (1) is arranged on the tower drum body (1), an inlet movable air door (21) which is normally in a closed state and can be opened automatically under a certain wind load effect is arranged at an inlet of the unloading air duct (2), and an outlet movable air door (22) which is normally in a closed state and can be opened automatically under a certain wind load effect is arranged at an outlet of the unloading air duct (2).
2. The wind turbine tower of claim 1, wherein: the entrance of uninstallation wind channel (2) is equipped with the restriction entry stopper (23) that entry movable air door (21) can only open towards a certain direction, the exit in uninstallation wind channel (2) is equipped with the restriction export stopper (24) that export movable air door (22) can only open towards the same direction of opening with entry movable air door (21).
3. The wind turbine tower of claim 1 or 2, wherein: entry movable air door (21) and export movable air door (22) all include door plant (211), pivot (212), bearing frame (213) and are used for driving door plant (211) are in torsional spring (214) of locking closed condition, bearing frame (213) fixed set up in on tower section of thick bamboo body (1), pivot (212) are located on bearing frame (213), door plant (211) and pivot (212) fixed connection, torsional spring (214) install in on pivot (212).
4. The wind turbine tower of claim 3, wherein: the unloading air duct (2) is a cylindrical passage, the door panel (211) is circular, the diameter of the door panel (211) is d, the thickness of the door panel (211) is h, the axis of the door panel (211) in the horizontal direction is P, and the axis of the rotating shaft (212) is parallel to the axis P of the door panel (211) in the horizontal direction.
5. The wind turbine tower of claim 4, wherein: the distance between the axis of the rotating shaft (212) and the axis P of the door panel (211) in the horizontal direction is 0.1 d-0.15 d.
6. The wind turbine tower of claim 4, wherein: the diameter of the unloading air duct (2) is (d +3h) - (d +4 h).
7. The wind turbine tower of claim 3, wherein: the unloading air channel (2) is horizontally arranged, the extending direction of the unloading air channel (2) is consistent with the main wind direction of the fan tower cylinder during working, and the inlet movable air door (21) and the outlet movable air door (22) are symmetrically arranged relative to the central axis of the tower cylinder body (1).
8. The wind turbine tower drum as claimed in claim 4, wherein the diameter of the cross section of the tower drum body (1) provided with the door panel (211) is L, and the diameter d of the door panel (211) is L (10% -15%).
9. The wind turbine tower of claim 3, wherein: the torsion spring (214) has a locking torque T that causes the door panel (211) to be in a locked closed state0The locking torque is that when the wind load torque applied to the inlet movable air door (21) or the outlet movable air door (22) is less than T0When the door panel (211) keeps a locking closed state, and the wind load torque borne by the inlet movable air door (21) or the outlet movable air door (22) is more than T0When the door plate (211) is opened, the locking torque of the unloading air channel (2) is conducted.
10. The wind turbine tower of claim 9, wherein: the lock-up torque T0Is composed of
T0＝0.05dρv2 2；
Wherein d is the diameter of the door panel (211), ρ is the density of air, v2The wind speed is the environmental wind speed under the extreme working condition that the fan needs to be stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304466.3A CN110005577B (en) | 2019-04-16 | 2019-04-16 | Fan tower drum with emergency unloading function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910304466.3A CN110005577B (en) | 2019-04-16 | 2019-04-16 | Fan tower drum with emergency unloading function |
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| Publication Number | Publication Date |
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| CN110005577A CN110005577A (en) | 2019-07-12 |
| CN110005577B true CN110005577B (en) | 2020-07-31 |
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| CN201910304466.3A Active CN110005577B (en) | 2019-04-16 | 2019-04-16 | Fan tower drum with emergency unloading function |
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| CN110925144A (en) * | 2019-11-01 | 2020-03-27 | 金陵科技学院 | Compound steel pipe concrete wind power tower base structure |
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