CN207647696U - A kind of wind power tower introducing intermediate support - Google Patents

A kind of wind power tower introducing intermediate support Download PDF

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Publication number
CN207647696U
CN207647696U CN201721485061.7U CN201721485061U CN207647696U CN 207647696 U CN207647696 U CN 207647696U CN 201721485061 U CN201721485061 U CN 201721485061U CN 207647696 U CN207647696 U CN 207647696U
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China
Prior art keywords
pylon
intermediate support
wind power
power tower
inner cavity
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CN201721485061.7U
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Chinese (zh)
Inventor
侯亚委
秦春雷
刘学武
李庆建
张丹
王小合
赵迎九
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Huadian Technology Co ltd
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Huadian Heavy Industries Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/728Onshore wind turbines

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Abstract

The utility model provides a kind of wind power tower introducing intermediate support, including pylon, and inner cavity is led in having;Intermediate support is arranged in and leads to inner cavity, and middle part has connection through-hole, the inner wall rigid connection of surrounding and pylon;The wind power tower of the introducing intermediate support of the utility model, is equipped with intermediate support in pylon, and pylon interior laminate layer can be played fixing layer by layer to pylon, improve the rigidity of pylon by intermediate support;There is prestressed cable simultaneously, pass through intermediate support to apply the prestressing force towards pylon to intermediate support, further increase the rigidity of pylon;The rigidity that pylon can be changed by adjusting the quantity of intermediate support and the pulling force of prestressed cable generates resonance to avoid with external disturbing force, improves the service life of pylon to change the natural frequency of vibration of pylon.

Description

A kind of wind power tower introducing intermediate support
Technical field
The utility model is related to wind power tower technical fields, and in particular to a kind of wind power tower introducing intermediate support.
Background technology
Wind power tower refers to the support construction of wind power generating set, and major function is the gravity of supporting wind power generation component Load, and bear the active force of wind wheel and wind acts on power on pylon.The most structure of wind power tower is steel flanged beam circle at present Cylinder or lattice pillar pylon, pylon itself is heavier, especially steel flanged beam cylinder tower body, diameter often accomplish 4 meters with On, pylon own wt, and processing difficulties are considerably increased, transport is inconvenient, increases cost of electricity-generating.
Chinese patent literature CN102182645A discloses a kind of wind power generation tower using smart stay cable, including pylon With the smart stay cable being installed in pylon, smart stay cable includes top anchor ring, middle part anchor ring, pulley, SMA muscle and prestressed cable, Prestressed cable one end connection top anchor ring, the other end are fixed on the bottom of pylon, pass through among prestressed cable and separately pacify successively The middle part anchor ring and pulley of dress, the prestressed cable between top anchor ring and middle part anchor ring, between middle part anchor ring and pulley are all worn There is SMA muscle;The utility model of said program is contemplated that, is generated negative direction pulling force by the elastic deformation of SMA muscle, is improved energy consumption, Reduce and control the vibration of pylon horizontal direction.
However, said program has as a drawback that:1, the influence generated to pylon of resonating is not accounted for;Pylon is by outer It will produce displacement or vibration after boundary's perturbed force, external disturbing force disappearance tail tower will continue to vibrate near equilbrium position, pylon The natural frequency of vibration only it is related with the rigidity of pylon itself and quality, when the natural frequency of vibration ω of pylon and the frequency θ of perturbed force connect very much When close (sections of 0.75≤θ/ω≤1.25), it will generate resonance, in order to avoid resonance, the natural frequency of vibration of pylon should be made far from wind The frequency of perturbed force caused by load or wind wheel rotation, and there is no consider this point for said program;In above-mentioned documents, Although being equipped with SMA muscle between the top anchor ring and middle part anchor ring of prestressed cable, between middle part anchor ring and pulley, due to SMA muscle has stronger elastic deformation, and effect, which is only that when pylon is impacted by high wind, high seas, consumes energy, this tool The connection type of flexible deformation so that the stress of drag-line is smaller for the stiffness effect of pylon, so that cannot make oneself of pylon Vibration frequency is substantially change;2, prestressed cable is constrained to S-shaped by middle part anchor ring and pulley, prestressed cable from tower top on earth Multiple tracks bending is passed through in portion, keeps the integral rigidity of prestressed cable poor;3, middle part anchor ring vacantly be arranged inside pylon, when pylon by When to external disturbing force, middle part anchor ring can generate left and right and upper and lower play with the tension variations of prestressed cable, be easy to cause Entanglement occurs at the anchor ring of middle part for prestressed cable.
Utility model content
Therefore, the technical problem to be solved by the present invention is to overcome pylon in the prior art in external disturbing force Frequency easy tos produce resonance when close with the pylon natural frequency of vibration, leads to the technological deficiency being easily damaged, can to provide one kind Change pylon rigidity, and then change the natural frequency of vibration of pylon so that the natural frequency of vibration of pylon causes with wind load or wind wheel rotation The vibration frequency of perturbed force is obviously staggered, to avoid the wind power tower of resonance.
In order to solve the above technical problems, the utility model provides a kind of wind power tower introducing intermediate support, including,
Pylon leads to inner cavity in having;
Intermediate support is arranged in described and leads to inner cavity, and middle part has connection through-hole, surrounding interior with the pylon Wall is rigidly connected.
Preferably, further include prestressed cable, one end is connect with the pylon top, the other end and the tower Frame bottom end connect, middle part pass through the connection through-hole, and with the connection through-hole sliding contact.
Preferably, the pylon is cylindrical structure.
Preferably, the prestressed cable has at least three, and it is circumferential to lead to inner cavity in described, at least three institutes Prestressed cable logical inner cavity in described is stated to be uniformly distributed.
Preferably, the connection through-hole of the intermediate support be regular polygon, the regular polygon it is interior Angle number is corresponding with the radical of the prestressed cable, the interior angle sliding contact of the prestressed cable and the regular polygon.
Preferably, the intermediate support has multiple, and the short transverse along the pylon is uniformly distributed.
Preferably, the connection in the direction along the pylon from middle part to both ends, the intermediate support is logical The aperture in hole becomes larger.
Preferably, the intermediate support includes,
Annular drag-line;
Supporting bar has more, and one end is fixedly connected with the annular drag-line, is led in the other end and the pylon interior The inner wall of chamber is fixedly connected;Along the circumferencial direction of the annular drag-line, the supporting bar is uniformly distributed.
Preferably, the intermediate support includes,
Annular drag-line;
Supporting block is loop configuration, and inner ring forms polygonal through hole, and the annular drag-line is arranged in the supporting block Inner ring, form the connection through-hole, outer ring is fixedly connected with the inner wall of the pylon.
Preferably, further include covering it is described in lead to inner cavity both ends open, make it is described in lead to inner cavity formed closing in The closure member of chamber.
The technical solution of the utility model has the following advantages that:
1. the wind power tower provided by the utility model for introducing intermediate support, is equipped with intermediate support in pylon, in Between the middle part of support element there is connection through-hole, the inner wall of surrounding and pylon to be rigidly connected, intermediate support can be from inside to tower Frame carries out rigid support, improves the rigidity of pylon itself;Since the natural frequency of vibration of pylon is only related with itself rigidity and quality, In the case where pylon sole mass is constant, above-mentioned intermediate support structure is set, it is rigid can significantly to promote pylon itself Degree, to change the pylon natural frequency of vibration;The wind power tower of the utility model, can be in the frequency for the external disturbing force for acting on pylon When rate is close with the pylon natural frequency of vibration, change the natural frequency of vibration of pylon, to avoid resonating, can significantly promote making for pylon Use the service life;The rigidity that pylon can be changed in a certain range by adjusting the quantity of intermediate support, to change pylon The natural frequency of vibration generates resonance to avoid with external disturbing force, improves the service life of pylon.
2. the wind power tower provided by the utility model for introducing intermediate support, prestressed cable pass through intermediate support After connecting through-hole, both ends are connect with the top of pylon and bottom end respectively, after prestressed cable is tensed, the both ends of prestressed cable The both ends of pylon are tensed in the middle part of to pylon, middle part, which is acted on by intermediate support in pylon, to be led on interior cavity wall so that tower Frame is integrally tightened, and the rigidity of pylon itself is further enhanced.
3. the wind power tower provided by the utility model for introducing intermediate support, pylon is cylindrical structure, the stress of pylon Evenly.
4. the wind power tower provided by the utility model for introducing intermediate support, prestressed cable have at least three, edge In lead to that inner cavity is circumferential, and at least three prestressed cables lead to inner cavity in and are uniformly distributed, to equably improve the rigid of pylon Degree.
5. the wind power tower provided by the utility model for introducing intermediate support, the connection through-hole is regular polygon, institute The interior angle number for stating regular polygon is corresponding with the radical of the prestressed cable, and the prestressed cable is stuck in the interior of regular polygon It is slided at angle, both generates pylon and shaken or prestressed cable can be avoided arbitrarily to run helter-skelter, ensure that prestressed cable is mutual It does not contact, random line can be avoided.
6. the wind power tower provided by the utility model for introducing intermediate support, is arranged multiple intermediate supports along pylon height Degree direction is uniformly distributed, and the power of prestressed cable can be uniformly distributed in tower height direction, be made the rigidity of each floor height of pylon It can obtain the raising of uniformity.
7. the wind power tower provided by the utility model for introducing intermediate support, the intermediate support from the middle part of pylon to The aperture of the extending direction at both ends, connection through-hole becomes larger, and prestressed cable is made to constitute hyperbola, balanced each centre Support element is enable the rigidity of pylon to obtain the raising of uniformity by the active force of prestressed cable.
8. the wind power tower provided by the utility model for introducing intermediate support, intermediate support is using annular drag-line and branch Strut member is constituted, and supporting bar is uniformly distributed along the circumferencial direction of the annular drag-line, and one end is fixed with annular drag-line, the other end It is fixed with the inner wall for leading to inner cavity in pylon, annular drag-line is by equal by power by supporting bar after the active force of prestressed cable It is even to be dispersed on pylon inner wall.
9. the wind power tower provided by the utility model for introducing intermediate support, intermediate support is using annular drag-line and branch Fagging block is constituted, and polylith supporting block constitutes loop configuration, the inner ring of the annular drag-line being arranged in annular brace plate, branch The inner wall for leading to inner cavity in the outer ring of fagging block and pylon is fixed, and annular drag-line after the active force of prestressed cable by passing through branch Power is dispersed on pylon inner wall by fagging block.
10. the wind power tower provided by the utility model for introducing intermediate support, has closure member, inner cavity two is led in covering End opening, make it is described in lead to inner cavity formed closing inner chamber, avoid the corrosion of extraneous poor environment, pylon durability is stronger, reduce Maintenance cost.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the stereochemical structure perspective diagram of the utility model.
Fig. 2 is the vertical view of the intermediate support of the utility model.
Reference sign:
1, pylon;2, prestressed cable;3, intermediate support;4, lead to inner cavity in;5, through-hole is connected;6, annular drag-line;7、 Supporting bar;8, supporting block;9, closure member.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.
In the description of the present invention, it should be noted that term "upper", "lower", "left", "right", "horizontal", The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching State the utility model and simplify and describe, do not indicate or imply the indicated device or element must have a particular orientation, with Specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, can also be electrical connection;Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.
Embodiment
The present embodiment provides a kind of wind power towers introducing intermediate support, as shown in Figure 1 and Figure 2, including pylon 1, answer in advance Power drag-line 2, intermediate support 3 and closure member 9.
Pylon 1 is the cylindrical structure for leading to inner cavity 4 in.
Intermediate support 3 has multiple, and setting is led to inside inner cavity 4 in described, and the short transverse along the pylon 1 is equal Even distribution;The intermediate support 3 includes annular drag-line 6 and supporting bar 7;Supporting bar 7 has more, is drawn along the annular The circumferencial direction of rope 6 is uniformly distributed, and one end is fixedly connected with the annular drag-line 6, the other end and logical inner cavity in the pylon 1 4 inner wall is fixedly connected;3 middle part of intermediate support constitutes connection through-hole 5 by annular drag-line 6, and the connection through-hole 5 is along the tower Its aperture of extending direction of frame 1 from middle part to both ends becomes larger.
The prestressed cable 2 has three, is uniformly distributed on the radial section of the pylon 1;Prestressed cable 2 one End is connect with 1 top of the pylon, and the other end is connect with 1 bottom end of the pylon, and middle part passes through the connection through-hole 5, and answers in advance Power drag-line 2 and 5 sliding contact of connection through-hole;The connection through-hole 5 is regular triangular, and three of them interior angle is described for accommodating Prestressed cable 2 makes three prestressed cables 2 be slided at three interior angles.
The closure member 9 cover it is described in lead to 4 both ends open of inner cavity, make it is described in lead to inner cavity 4 formed closing inner chamber.
Operation principle
From natural frequency of vibration calculation formula:The π f=2 of ω=2 π/T
In formula, the number of π unit interval (second) internal vibration of expression 2, unit is radian per second.
Definition:ω=(k/m) ^ (1/2), ω are the intrinsic very important dynamic characteristics of system.
In forced vibration, when the frequency θ of the natural frequency of vibration ω of system and perturbed force very close to when (0.75≤θ/ω≤ 1.25 sections), it will generate resonance.To avoid resonating, just ω and θ must be made separate.As can be seen that the natural frequency of vibration from formula It is only related with rigidity and quality, thus change pylon rigidity can change the natural frequency of vibration of pylon 1, and pylon rigidity is increased to one The frequency of external disturbing force can be avoided by determining degree, to avoid the generation of resonance, improve the service life of pylon.
By the way that intermediate support 3 is arranged in pylon 1, pylon 1 is carried out to reinforce the rigidity that can improve pylon layer by layer, and And 3 numbers of intermediate support of setting are more, the rigidity of pylon 1 is bigger;By adjusting the stress intensity of prestressed cable 2, energy Active force of the intermediate support 3 to pylon 1 is enough improved, to greatly improve the rigidity of pylon 1;Therefore, selection is certain The intermediate support 3 of quantity and the stress intensity for adjusting prestressed cable 2, can be increased to the rigidity of pylon 1 makes pylon 1 The natural frequency of vibration avoid the frequency of external disturbing force, to avoid resonating.
As the alternative of above-described embodiment, the closure member 9 can be omitted.
As the alternative of above-described embodiment, the intermediate support 3 could alternatively be including annular drag-line 6 and branch Fagging block 8;Supporting block 8 has polylith, and constitutes loop configuration, and inner ring forms polygonal through hole;Annular drag-line 6 is arranged in institute The inner ring of supporting block 8 is stated, the connection through-hole 5 is formed;3 outer ring of intermediate support is fixedly connected with the inner wall of the pylon 1.
As the alternative of above-described embodiment, the intermediate support 3 may be replaced by overall structure.
As the alternative of above-described embodiment, the aperture of the connection through-hole 5, which can not be done, to be changed.
As the alternative of above-described embodiment, there are one the intermediate support 3 can only have.
As the alternative of above-described embodiment, the shape of the connection through-hole 5 could alternatively be round.
As the alternative of above-described embodiment, the quantity of the prestressed cable 2 can be more than three, can also have There are symmetrical two.
As the alternative of above-described embodiment, the pylon 1 could alternatively be pyramidal structure.
As the alternative of above-described embodiment, the prestressed cable 2 can be omitted.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or Among the protection domain that variation is created still in the utility model.

Claims (10)

1. a kind of wind power tower introducing intermediate support, which is characterized in that including,
Pylon (1) leads to inner cavity (4) in having;
Intermediate support (3), at least one are arranged in described and lead to inner cavity (4) inside, and middle part, which has, connects through-hole (5), and four All inner walls with the pylon (1) are rigidly connected.
2. the wind power tower according to claim 1 for introducing intermediate support, which is characterized in that further include,
Prestressed cable (2), one end are connect with the pylon (1) top, and the other end is connect with the pylon (1) bottom end, middle part Across the connection through-hole (5), and with connection through-hole (5) sliding contact.
3. the wind power tower according to claim 2 for introducing intermediate support, which is characterized in that the pylon (1) is circle Barrel structure.
4. the wind power tower according to claim 3 for introducing intermediate support, which is characterized in that the prestressed cable (2) there are at least three, logical inner cavity (4) are circumferential in described, and at least three prestressed cables (2) lead to inner cavity in described (4) inner homogeneous is distributed.
5. the wind power tower according to claim 4 for introducing intermediate support, which is characterized in that the intermediate support (3) the connection through-hole (5) is regular polygon, the radical of the interior angle number and the prestressed cable (2) of the regular polygon It is corresponding, the interior angle sliding contact of the prestressed cable (2) and the regular polygon.
6. the wind power tower according to any one of claims 1 to 5 for introducing intermediate support, which is characterized in that described Intermediate support (3) have it is multiple, the short transverse along the pylon (1) is uniformly distributed.
7. it is according to claim 6 introduce intermediate support wind power tower, which is characterized in that along the pylon (1) from To the direction at both ends, the aperture of the connection through-hole (5) of the intermediate support (3) becomes larger at middle part.
8. the wind power tower according to claim 2 for introducing intermediate support, which is characterized in that the intermediate support (3) include,
Annular drag-line (6);
Supporting bar (7) has more, and one end is fixedly connected with the annular drag-line (6), the other end and the pylon (1) In lead to inner cavity (4) inner wall be fixedly connected;Along the circumferencial direction of the annular drag-line (6), the supporting bar (7) is uniformly divided Cloth.
9. the wind power tower according to claim 2 for introducing intermediate support, which is characterized in that the intermediate support (3) include,
Annular drag-line (6);
Supporting block (8) has polylith and constitutes loop configuration, and inner ring forms polygonal through hole, and the annular drag-line (6) is arranged Inner ring in the supporting block (8) forms the connection through-hole (5), and outer ring is fixedly connected with the inner wall of the pylon (1).
10. the wind power tower according to claim 2 for introducing intermediate support, which is characterized in that further include described in covering In lead to inner cavity (4) both ends open, make it is described in lead to inner cavity (4) formed closing inner chamber closure member (9).
CN201721485061.7U 2017-11-09 2017-11-09 A kind of wind power tower introducing intermediate support Active CN207647696U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107882689A (en) * 2017-11-09 2018-04-06 华电重工股份有限公司 A kind of wind power tower for introducing intermediate support
CN110374817A (en) * 2019-08-16 2019-10-25 太原重工股份有限公司 Without the tower barrel of wind generating set for adding weldment
CN111120218A (en) * 2019-12-25 2020-05-08 淮南联合大学 Wind power generation tower convenient and fast to construct and transport
CN112228286A (en) * 2020-09-25 2021-01-15 河南恒聚新能源设备有限公司 Tower and vertical axis wind power generation device
CN112761887A (en) * 2021-01-13 2021-05-07 国电联合动力技术有限公司 Tower stiffness control method and device and variable stiffness tower of wind generating set

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107882689A (en) * 2017-11-09 2018-04-06 华电重工股份有限公司 A kind of wind power tower for introducing intermediate support
CN107882689B (en) * 2017-11-09 2024-02-13 华电重工股份有限公司 Wind power tower with middle supporting piece
CN110374817A (en) * 2019-08-16 2019-10-25 太原重工股份有限公司 Without the tower barrel of wind generating set for adding weldment
CN111120218A (en) * 2019-12-25 2020-05-08 淮南联合大学 Wind power generation tower convenient and fast to construct and transport
CN112228286A (en) * 2020-09-25 2021-01-15 河南恒聚新能源设备有限公司 Tower and vertical axis wind power generation device
CN112228286B (en) * 2020-09-25 2021-12-14 河南恒聚新能源设备有限公司 Tower and vertical axis wind power generation device
CN112761887A (en) * 2021-01-13 2021-05-07 国电联合动力技术有限公司 Tower stiffness control method and device and variable stiffness tower of wind generating set

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Address after: 100071 11 / F, block B, building 1, yard 6, Automobile Museum East Road, Fengtai District, Beijing

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