CN218438571U - A truss wind power tower connection node using structural high-strength rivets - Google Patents
A truss wind power tower connection node using structural high-strength rivets Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000012423 maintenance Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000002929 anti-fatigue Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003351 stiffener Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
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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
- Y02E10/728—Onshore wind turbines
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Abstract
Description
技术领域technical field
本实用新型属于风电设备技术领域,具体涉及一种风电塔架连接法兰节点。The utility model belongs to the technical field of wind power equipment, in particular to a connection flange node of a wind power tower.
背景技术Background technique
风能作为一种清洁的可再生能源受到广泛关注,桁架风电塔能实现材料在空间上的最优分布,以最小的材料代价获取足够的强度、刚度和稳定,在风电领域有着广泛应用。现阶段,桁架式风电塔架的紧固连接方式主要为焊接和螺栓连接。螺栓连接的施工方法一般是采用扭矩法,其施工方法成本低廉,施工便利,但是通过施加扭矩使得螺栓产生预拉力,螺栓内扭矩的存在会降低螺栓的承受力、使施加的预应力不够准确和降低螺栓的防松性能等不利影响。并且螺栓连接在交变荷载下容易产生疲劳破坏或因震动造成的脱落,同时在螺母与螺栓处空隙较大,螺栓会发生松动或者发生应力腐蚀诱发延迟性断裂,从而导致采用高强螺栓连接的塔筒法兰抗振防松及抗疲劳性能较差。As a clean and renewable energy source, wind energy has attracted widespread attention. Truss wind power towers can realize the optimal distribution of materials in space, and obtain sufficient strength, stiffness and stability at the minimum material cost, and are widely used in the field of wind power. At present, the fastening connection methods of truss-type wind power towers are mainly welding and bolting. The construction method of bolt connection is generally the torque method, the construction method is low in cost and convenient in construction, but by applying torque to make the bolt generate pre-tension, the existence of internal torque in the bolt will reduce the bearing capacity of the bolt, making the applied pre-stress inaccurate and inaccurate. Reduce the adverse effects such as the anti-loosening performance of the bolts. In addition, the bolted connection is prone to fatigue damage or falling off due to vibration under alternating loads. At the same time, the gap between the nut and the bolt is large, and the bolt will loosen or stress corrosion will induce delayed fracture, which will lead to towers connected by high-strength bolts. The cylinder flange has poor anti-vibration, anti-loosening and anti-fatigue performance.
风机在正常运行中时,各连接部件的螺栓长期运行在各种振动的合力当中,极易使其松动。为了不使其在松动后导致局部螺栓受力不均被剪切,必须定期对螺栓进行防松检查.现有技术中均为人为定期检查以及维护,劳动强度及运营维护成本较高。另外传统风电塔筒在工作过程中,法兰盘处于偏心受拉状态,当法兰盘的外侧边缘张开位移后,螺栓的应力会随筒壁拉力线性增大,应力幅也会显著增加,因此,传统风电塔筒法兰盘存在一定构造缺陷。When the fan is in normal operation, the bolts of the connecting parts run for a long time under the resultant force of various vibrations, which can easily loosen them. In order to prevent local bolts from being sheared due to uneven stress after loosening, regular anti-loosening checks must be carried out on the bolts. In the prior art, regular inspections and maintenance are performed manually, and the labor intensity and operation and maintenance costs are relatively high. In addition, during the working process of the traditional wind power tower, the flange is in an eccentric tension state. When the outer edge of the flange is opened and displaced, the stress of the bolt will increase linearly with the tension of the wall, and the stress amplitude will also increase significantly. Therefore, there are certain structural defects in the traditional wind power tower flange.
实用新型内容Utility model content
本实用新型的目的是提供一种应用高强拉铆连接的桁式风电塔架连接节点,代替传统法兰用于塔柱节点之间的连接,以弥补传统螺栓连接与法兰盘连接存在的缺陷,降低连接节点的维护成本。The purpose of this utility model is to provide a truss-type wind power tower connection node with high-strength riveting connection, which can replace the traditional flange for the connection between the tower column nodes, so as to make up for the defects of the traditional bolt connection and flange connection. , to reduce the maintenance cost of connected nodes.
为实现上述目的,本实用新型采用的技术方案是:一种应用结构型高强铆钉的桁架风电塔架连接节点,主要包括节点钢管塔柱、竖向连接装置;所述节点钢管塔柱的两端分别通过竖向连接装置与上、下塔柱塔节连接; 所述节点钢管塔柱上设有两个竖向布置的节点板,两个节点板之间呈一定角度夹角,所述节点板用于连接桁架斜杆。In order to achieve the above purpose, the technical solution adopted by the utility model is: a truss wind power tower connection node using structural high-strength rivets, mainly including node steel tube tower columns and vertical connection devices; the two ends of the node steel tube tower columns They are respectively connected to the upper and lower tower columns through vertical connection devices; the node steel pipe towers are provided with two vertically arranged node plates, and there is a certain angle between the two node plates, and the node plates Used to connect truss diagonals.
优选地,所述的竖向连接装置包括开设在所述节点钢管塔柱两端的安装槽、结构型高强铆钉;所述结构型高强铆钉与安装槽和上、下塔柱塔节上预留的安装孔配合固定。Preferably, the vertical connection device includes installation grooves and structural high-strength rivets opened at both ends of the steel pipe tower at the node; The mounting holes fit together.
优选地,两个节点板之间设有横向加劲板。Preferably, a transverse stiffener is provided between two gusset plates.
优选地,所述节点板通过结构型高强铆钉和连接板与桁架斜杆连接。Preferably, the gusset plate is connected to the diagonal bars of the truss through structural high-strength rivets and connecting plates.
与现有技术中传统的螺栓和法兰连接相比,本实用新型的应用结构型高强铆钉的桁架风电塔架连接节点供了更耐久的连接支持。结构型高强铆钉采用拉铆技术连接,防松动、抗震动,可以极大的减少后期的维护工作,基本实现对结构连接紧固件的低维护甚至零维护。Compared with the traditional bolt and flange connection in the prior art, the connection node of the truss wind power tower using structural high-strength rivets of the utility model provides more durable connection support. Structural high-strength rivets are connected by riveting technology, which is anti-loosening and anti-vibration, which can greatly reduce the maintenance work in the later stage, and basically realize low-maintenance or even zero-maintenance for structural connection fasteners.
附图说明Description of drawings
图1为本实用新型实施例中应用结构型高强铆钉的桁架风电塔架连接节点的立体结构示意图;Fig. 1 is a three-dimensional structural schematic diagram of a truss wind power tower connection node using structural high-strength rivets in an embodiment of the utility model;
图2为本实用新型实施例中应用结构型高强铆钉的桁架风电塔架连接节点的主视图;Fig. 2 is the front view of the connection node of the truss wind power tower using structural high-strength rivets in the embodiment of the utility model;
图3为本实用新型实施例中应用结构型高强铆钉的桁架风电塔架连接节点的左视图;Fig. 3 is a left view of the connection node of the truss wind power tower using structural high-strength rivets in the embodiment of the utility model;
图4为本实用新型实施例中竖向连接装置与上塔柱塔节的连接示意图;Fig. 4 is a schematic diagram of the connection between the vertical connection device and the upper tower column in the embodiment of the present invention;
图5为本实用新型实施例中结构型高强铆钉的结构示意图;Fig. 5 is a structural schematic diagram of a structural high-strength rivet in an embodiment of the utility model;
图6本实用新型实施例中应用结构型高强铆钉的桁架风电塔架连接节点与上、下塔柱塔节连接示意图;Fig. 6 is a schematic diagram of the connection nodes of the truss wind power tower with structural high-strength rivets and the connection of the upper and lower tower columns in the embodiment of the utility model;
图中: 1、节点钢管塔柱;2、连接板;3、工字钢斜杆;4、节点板;5、弧形横向加劲板;6、结构型高强铆钉;7、套环;8、上钢管塔柱塔节;9、下钢管塔柱塔节;10、安装槽。In the figure: 1. Node steel pipe tower column; 2. Connecting plate; 3. I-beam oblique bar; 4. Node plate; 5. Arc transverse stiffening plate; 6. Structural high-strength rivet; Upper steel pipe tower section; 9. Lower steel pipe tower section; 10. Installation groove.
具体实施方式Detailed ways
为了便于理解本实用新型,下面结合附图和具体实施例,对本实用新型进行更详细的说明。附图中给出了本实用新型的较佳的实施例。但是,本实用新型可以以许多不同的形式来实现,并不限于本说明书所描述的实施例。相反地,提供这些实施例的目的是使对本实用新型公开内容的理解更加透彻全面。In order to facilitate the understanding of the utility model, the utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present utility model are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive.
如图1、图2、图3所示,本实用新型提供一种应用结构型高强铆钉的桁架式风电塔架连接节点,包含的组成部分有:节点钢管塔柱1,连接板2,工字钢斜杆3,节点板4,横向加劲板5,结构型高强铆钉6,套环7。As shown in Fig. 1, Fig. 2 and Fig. 3, the utility model provides a truss-type wind power tower connection node using structural high-strength rivets, which includes: node steel
本实施例中,节点钢管塔柱1为圆柱形,其外径与拟连接的上钢管塔柱塔节8、下钢管塔柱塔节9的内径匹配,使得节点钢管塔柱1的两端插入上钢管塔柱塔节8、下钢管塔柱塔节9内,通过竖向连接装置进行连接,如图4和图5所示。In this embodiment, the node steel
连接装置包括设置在节点钢管塔柱1两端端部的竖向安装槽10、结构型高强铆钉6、套环7和开设在上钢管塔柱塔节8、下钢管塔柱塔节9端部的安装孔11。通过拉铆技术实现节点钢管塔柱1与上钢管塔柱塔节8、下钢管塔柱塔节9的连接。The connection device includes
在节点钢管塔柱1上焊接有两个节点板4,两个节点板竖向布置在节点钢管塔柱1,并且呈一定角度夹角。根据塔架的截面形状不同,两个节点板之间的夹角在60-90度之间取值。如果是三角形塔架,则两个节点板之间的夹角优选为60度。如果是矩形塔架,则两个节点板之间的夹角优选为90度。节点板4的作用是连接桁架斜杆,例如本实施例中的工字钢斜杆3。为了增加节点板4的稳固性,在两个节点板之间设有弧形的横向加劲板5,对节点板起到支撑作用。Two
工字钢斜杆3通过左右两块连接板2和结构型高强铆钉6连接在节点板4的上底部和下部。工字钢斜杆3、连接板2和节点板4的上部和下部分别预留安装孔。The I-shaped steel
如图5所示,结构型高强铆钉6分为铆钉头6-1、光杆段6-2、环槽段6-3和尾牙6-4四个部分,其锁紧过程为:将铆钉穿过试件铆钉孔并套上套环7,然后将铆钉枪的枪口插入铆钉的尾部,使铆钉枪与铆钉尾牙的螺纹咬合,之后就由铆钉枪自动完成,在扣动扳机后铆钉枪会自动把铆钉尾部向后拉断,并通过拉断的力得到板件预紧力。As shown in Figure 5, the structural high-
本实施例中,应用结构型高强铆钉的桁架式风电塔架连接节点的安装过程如下:In this embodiment, the installation process of the truss-type wind power tower connection nodes using structural high-strength rivets is as follows:
节点钢管塔柱1在工厂内完成预制,焊接节点板4和横向加劲板5,并在预制钢管圆筒塔柱端部设置安装槽10。节点拼装前,对节点板4与工字型斜杆3打孔,根据结构型高强铆钉6的实际直径和工程情况,选择打孔直径。The node steel
进行节点板4、工字型斜杆3与两个连接板2的预安装,使用结构型高强铆钉6穿过节点板4、工字型斜杆3与两个连接板2的孔位。预安装能起到固定节点板4与工字型斜杆3的位置,同时检验提前打好的结构型高强铆钉孔位是否满足要求。Pre-install the
将结构型高强铆钉6贯穿左右的两个连接板2与节点板4或工字型斜杆腹板3铆钉孔并套上套环7,然后将铆钉枪的枪口插入结构型高强铆钉6的尾部,使铆钉枪与结构型高强铆钉6尾部的螺纹咬合吃力,然后通过铆钉枪继续施加预拉力荷载,进而引起尾牙预设的颈缩截面自行断裂,从而使预拉力由铆钉枪转移至结构型高强铆钉6,完成锚固过程。Put the structural high-
完成自身组装的桁架式风电塔架法兰节点再连接上、下钢管塔柱塔节。将拟连接的上钢管塔柱塔节8下端部设置的安装孔与节点钢管塔柱1上端部安装槽对齐,安装孔内预留的结构型高强铆钉6沿着安装槽10贯穿节点钢管塔柱1筒壁和拟连接的上钢管塔柱塔节8筒壁,然后如上述锁紧过程一致,通过拉铆技术锁紧结构型高强铆钉6,形成摩擦型竖向连接装置,连接上钢管塔柱塔节8和节点钢管塔柱1。以同样的连接方式,将拟连接的下钢管塔柱塔节9与节点钢管塔柱1进行连接,如图6所示。The self-assembled truss-type wind power tower flange joints are then connected to the upper and lower steel pipe tower columns. Align the installation hole set at the lower end of the upper steel
至此,该应用结构型高强铆钉的桁架风电塔架连接节点完成安装。So far, the truss wind power tower connection node with structural high-strength rivets has been installed.
最后需要指出的是:以上实例仅以说明本发明的方案,而非将其限制。尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离发明各实施技术方案的精神和范围。Finally, it should be pointed out that the above examples are only used to illustrate the solution of the present invention, not to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: they can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features; and these Modification or replacement does not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions implemented in the invention.
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