CN206738080U - A kind of load charger for generator blade static load test - Google Patents

A kind of load charger for generator blade static load test Download PDF

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CN206738080U
CN206738080U CN201720622052.1U CN201720622052U CN206738080U CN 206738080 U CN206738080 U CN 206738080U CN 201720622052 U CN201720622052 U CN 201720622052U CN 206738080 U CN206738080 U CN 206738080U
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loading
load
console
blade
static load
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徐立军
徐蕾
阿布里提
段友莲
汪继伟
史瑞静
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Xinjiang Institute of Engineering
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Xinjiang Institute of Engineering
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Abstract

本实用新型公开了一种用于发电机叶片静载荷试验的载荷加载装置,包括固定组件和加载组件;固定组件包括钢轨;在钢轨沿直线的延伸处设有固定底座;在固定底座上设有定位孔;加载组件包括驱动电机和固定夹具;加载小车底部设有行走轮;加载小车侧部设有控制台;控制台内置有PLC控制器,控制台表面为显示器;驱动电机与PLC控制器通过导线连接;固定夹具通过钢绳与驱动电机主轴相连。本实用新型,结构简单,构思巧妙,成本低廉,通过多台加载组件的配合使用,实现对中型叶片到大型叶片的有效测量,PLC控制器配合伺服电机的使用,提高了测量精度,保证了检测质量,具有很强的实用性和推广性。

The utility model discloses a load loading device for the static load test of generator blades, which comprises a fixed assembly and a loading assembly; the fixed assembly includes a steel rail; a fixed base is arranged at the straight line extension of the steel rail; Positioning holes; loading components include drive motors and fixing fixtures; the bottom of the loading trolley is equipped with walking wheels; the side of the loading trolley is equipped with a console; the console has a built-in PLC controller, and the surface of the console is a display; the drive motor and the PLC controller pass through The wire is connected; the fixing fixture is connected with the main shaft of the driving motor through a steel rope. The utility model has the advantages of simple structure, ingenious conception and low cost. The effective measurement of medium-sized blades to large-sized blades is realized through the cooperative use of multiple loading components. The use of PLC controllers in conjunction with servo motors improves the measurement accuracy and ensures the detection Quality, with strong practicality and promotion.

Description

一种用于发电机叶片静载荷试验的载荷加载装置A load loading device for static load test of generator blade

技术领域technical field

本实用新型属于风电设备制造及检测的技术领域,具体涉及一种用于发电机叶片静载荷试验的载荷加载装置。The utility model belongs to the technical field of wind power equipment manufacture and detection, and in particular relates to a load loading device for a static load test of generator blades.

背景技术Background technique

叶片作为风电机组的核心部件,在机组运行时承受着各种复杂的载荷,在进行正式使用前必须经过形式评估,以保证机组运行的安全性和可靠性,评估包括:静力、模态、质量及刚度分布等方面。叶片静力实验就是在叶片静止状态下对叶片施加载荷,通过安装在叶片上的测试设备采集叶片的应力应变数据,其目的是测试叶片承受极限载荷的能力以及叶片在承受极限载荷情况下的变形特性。在静力实验过程中对叶片施加的测试载荷设定为设计极限载荷的110%,在叶片测试方向施加具有一定安全裕量的最大载荷,以测试其屈曲稳定性、刚度及叶尖最大位移。As the core component of the wind turbine, the blade is subjected to various complex loads during the operation of the unit. Before the formal use, the blade must undergo formal evaluation to ensure the safety and reliability of the unit operation. The evaluation includes: static force, modal, quality and stiffness distribution. The blade static test is to apply a load to the blade in a static state, and collect the stress and strain data of the blade through the test equipment installed on the blade. The purpose is to test the blade's ability to withstand the ultimate load and the deformation of the blade under the ultimate load characteristic. During the static test, the test load applied to the blade is set to 110% of the design limit load, and the maximum load with a certain safety margin is applied in the test direction of the blade to test its buckling stability, stiffness and maximum displacement of the blade tip.

现有静载荷试验中通常选用起重机加载装置,价格昂贵,精度检测低,且不适用于中型到大型的叶片检测,具有一定的局限性。In the existing static load test, the crane loading device is usually used, which is expensive, has low precision detection, and is not suitable for medium to large blade detection, which has certain limitations.

实用新型内容Utility model content

本实用新型的目的在于针对现有技术中的上述不足,提供一种用于发电机叶片静载荷试验的载荷加载装置,以解决静载荷试验费用高、精度低和局限性的问题。The purpose of this utility model is to provide a load loading device for the static load test of generator blades to solve the problems of high cost, low precision and limitations of the static load test.

为达到上述目的,本实用新型采取的技术方案是:In order to achieve the above object, the technical scheme that the utility model takes is:

一种用于发电机叶片静载荷试验的载荷加载装置,包括固定组件和加载组件;A load loading device for a static load test of a generator blade, comprising a fixing assembly and a loading assembly;

固定组件包括钢轨;在钢轨沿直线的延伸处设有固定底座;在固定底座上设有定位孔;The fixed component includes a steel rail; a fixed base is provided at the extension of the steel rail along the straight line; a positioning hole is provided on the fixed base;

加载组件包括驱动电机和设于加载小车内的固定夹具;加载小车底部设有与钢轨配合的行走轮;加载小车侧部设有控制台;控制台内置有PLC控制器,控制台表面为显示器;驱动电机与PLC控制器通过导线连接;固定夹具通过钢绳与驱动电机主轴相连。The loading assembly includes the driving motor and the fixing fixture in the loading trolley; the bottom of the loading trolley is equipped with walking wheels that match the rails; the side of the loading trolley is equipped with a console; the console has a built-in PLC controller, and the surface of the console is a display; The driving motor is connected with the PLC controller through wires; the fixing fixture is connected with the main shaft of the driving motor through steel ropes.

优选地,固定夹具外部为钢框架;在钢框架内部设有与钢绳连接的夹块;夹块的表面紧贴有橡胶垫。Preferably, the outside of the fixing fixture is a steel frame; inside the steel frame is provided a clamping block connected with a steel rope; the surface of the clamping block is closely attached to a rubber pad.

优选地,驱动电机为伺服电机。Preferably, the drive motor is a servo motor.

优选地,伺服电机设于龙门吊支架顶部;龙门吊支架固定于加载小车上。Preferably, the servo motor is arranged on the top of the gantry crane bracket; the gantry crane bracket is fixed on the loading trolley.

优选地,龙门吊支架上设有嵌放导线的凹槽。Preferably, the gantry crane bracket is provided with grooves for embedding wires.

本实用新型提供的用于发电机叶片静载荷试验的载荷加载装置,具有以下有益效果:The load loading device used for the static load test of generator blades provided by the utility model has the following beneficial effects:

本实用新型将叶片固定于固定组件上,并用至少一个固定夹具夹持叶片,同时,PLC控制器通过改变脉冲数来改变伺服电机转动步长,从而调节施加载荷的大小,以实现对叶片载荷的精确控制,并配合多个监测仪器,实现对叶片静载荷的精确测量。The utility model fixes the blade on the fixed assembly, and clamps the blade with at least one fixing fixture. At the same time, the PLC controller changes the rotation step of the servo motor by changing the number of pulses, thereby adjusting the size of the applied load, so as to realize the control of the blade load. Accurate control, combined with multiple monitoring instruments, realizes accurate measurement of blade static load.

本实用新型,结构简单,构思巧妙,成本低廉,通过多台加载组件的配合使用,实现对中型叶片到大型叶片的有效测量,PLC控制器配合伺服电机的使用,提高了测量精度,保证了检测质量,具有很强的实用性和推广性。The utility model has the advantages of simple structure, ingenious conception and low cost. The effective measurement of medium-sized blades to large-sized blades is realized through the cooperative use of multiple loading components. The use of PLC controllers in conjunction with servo motors improves the measurement accuracy and ensures the detection Quality, with strong practicality and promotion.

附图说明Description of drawings

图1为用于发电机叶片静载荷试验的载荷加载装置的主视图。Fig. 1 is the front view of the load loading device used for the static load test of the generator blade.

图2为用于发电机叶片静载荷试验的载荷加载装置的侧视图。Fig. 2 is a side view of the load loading device used for the static load test of the generator blade.

其中,1、龙门吊支架;2、伺服电机;3、固定夹具;4、控制台;5、钢轨;6、行走轮;7、固定底座;8、定位孔。Among them, 1. Gantry crane bracket; 2. Servo motor; 3. Fixed fixture; 4. Console; 5. Steel rail; 6. Walking wheel; 7. Fixed base; 8. Positioning hole.

具体实施方式detailed description

下面对本实用新型的具体实施方式进行描述,以便于本技术领域的技术人员理解本实用新型,但应该清楚,本实用新型不限于具体实施方式的范围,对本技术领域的普通技术人员来讲,只要各种变化在所附的权利要求限定和确定的本实用新型的精神和范围内,这些变化是显而易见的,一切利用本实用新型构思的实用新型创造均在保护之列。The specific embodiment of the present utility model is described below, so that those skilled in the art understand the utility model, but should be clear, the utility model is not limited to the scope of specific embodiment, for those of ordinary skill in the art, as long as Various changes are within the spirit and scope of the utility model defined and determined by the appended claims, and these changes are obvious, and all utility model creations utilizing the concept of the utility model are all included in the protection list.

根据本申请的一个实施例,如图1-2所示,本方案的用于发电机叶片静载荷试验的载荷加载装置,包括固定组件和加载组件。According to an embodiment of the present application, as shown in Fig. 1-2, the load loading device for the static load test of the generator blade of the present solution includes a fixing component and a loading component.

固定组件包括钢轨5,在钢轨5沿直线的延伸处设有固定底座7,在固定底座7上设有定位孔8,固定夹具3外部为钢框架,在钢框架内部设有与钢绳连接的夹块,夹块的表面紧贴有橡胶垫。在静载荷试验时,将叶片的桨柄嵌入定位孔8内固定。The fixed assembly includes a steel rail 5, a fixed base 7 is provided at the extension of the steel rail 5 along a straight line, and a positioning hole 8 is provided on the fixed base 7. The outside of the fixed fixture 3 is a steel frame, and a steel frame is provided inside the steel frame. A clamping block, the surface of the clamping block is closely attached to a rubber pad. During the static load test, the paddle handle of the blade is embedded in the positioning hole 8 and fixed.

加载组件包括驱动电机和固定夹具3,驱动电机为伺服电机2,安装于龙门吊支架1顶部,固定夹具3安装于加载小车内,固定夹具3通过钢绳与伺服电机2主轴相连。The loading assembly includes a drive motor and a fixed fixture 3, the drive motor is a servo motor 2, installed on the top of the gantry crane bracket 1, the fixed fixture 3 is installed in the loading trolley, and the fixed fixture 3 is connected to the main shaft of the servo motor 2 through a steel rope.

加载小车底部为行走轮6,行走轮6可在钢轨5上滑动。加载小车侧部为控制台4,控制台4表面为显示器,控制台4内部为PLC控制器,PLC控制器通过导线与伺服电机2连接,PLC控制器通过改变脉冲数来改变伺服电机2转动步长,从而调节施加载荷的大小。The bottom of the loading trolley is a walking wheel 6, and the walking wheel 6 can slide on the rail 5. The side of the loading trolley is the console 4, the surface of the console 4 is a display, and the inside of the console 4 is a PLC controller. The PLC controller is connected to the servo motor 2 through a wire, and the PLC controller changes the rotation step of the servo motor 2 by changing the number of pulses. length to adjust the magnitude of the applied load.

本实施例为一个11米长大型风力机叶片静载荷试验。This embodiment is a static load test on a large wind turbine blade with a length of 11 meters.

将叶片一端固定于定位孔8内,选用两台加载组件,分别在离叶片边端4m和8米处,用固定夹具3将叶片固定,用于夹持的夹块的首尾两端分别用皮带固定。Fix one end of the blade in the positioning hole 8, select two loading assemblies, and fix the blade with the fixing fixture 3 respectively at 4m and 8m away from the edge of the blade. fixed.

在静载荷试验之前,对叶片每个方向施加40%的预加载荷,以对测量系统、固定夹具3与叶片连接、叶根与固定底座7连接进行检查,测定是否符合试验技术要求。拉紧试验件,消除间隙,载荷从40%测试载荷开始,每次增加20%测试载荷,载荷增加至100%测试载荷为止。Before the static load test, a 40% preload is applied to each direction of the blade to check the measurement system, the connection between the fixing fixture 3 and the blade, and the connection between the blade root and the fixed base 7 to determine whether it meets the technical requirements of the test. Tension the test piece to eliminate the gap, the load starts from 40% of the test load, and increases the test load by 20% each time, until the load increases to 100% of the test load.

静载荷试验时,在龙门吊支架1上固定载荷记录仪,在两个固定夹具3之间的拉绳上固定拉绳式数字输出型位移传感器,在叶片主梁、钝尾缘、尾缘夹芯和剪切腹板上固定应变片。During the static load test, fix the load recorder on the gantry crane bracket 1, fix the drawstring type digital output displacement sensor on the stay rope between the two fixing fixtures 3, and sandwich the blade main beam, blunt trailing edge and trailing edge and fixed strain gauges on the shear web.

吊点位置选取为叶片截面三分之一位置的主梁中心点,夹具接触叶片的承载表面必须精确匹配当地的叶片轮廓,且用橡胶垫使其具有弹性。夹块轻微的与叶片接触,避免过度夹紧挤压叶片从而破坏型面和剪切层,,两个加载组件之间相互独立,实验时通过控制台4对伺服电机2进行控制使其同时向上提升施加载荷,通过控制伺服电机2每次的旋转圈数控制向上的载荷大小,当载荷达到需求载荷时保持10秒,并通过拉绳式数字输出型位移传感器记录载荷大小,应变片测量叶片应变和叶片主梁的纵向应变。The position of the lifting point is selected as the center point of the main beam at the third position of the blade section. The bearing surface of the fixture contacting the blade must accurately match the local blade profile, and rubber pads are used to make it elastic. The clamping block is slightly in contact with the blade to avoid excessive clamping and extrusion of the blade to damage the profile and shear layer. The two loading components are independent of each other. During the experiment, the control console 4 controls the servo motor 2 to make it go up simultaneously. Lift the applied load, and control the upward load by controlling the number of rotations of the servo motor 2 each time. When the load reaches the required load, keep it for 10 seconds, and record the load through the rope-type digital output displacement sensor, and measure the blade strain with the strain gauge. and the longitudinal strain of the blade girder.

本实用新型,结构简单,构思巧妙,成本低廉,通过多台加载组件的配合使用,实现对中型叶片到大型叶片的有效测量,PLC控制器配合伺服电机2的使用,提高了测量精度,保证了检测质量,具有很强的实用性和推广性。The utility model has the advantages of simple structure, ingenious conception and low cost. The effective measurement of medium-sized blades to large-sized blades is realized through the cooperative use of multiple loading components. The use of the PLC controller in conjunction with the servo motor 2 improves the measurement accuracy and ensures It is highly practical and popular for testing quality.

虽然结合附图对实用新型的具体实施方式进行了详细地描述,但不应理解为对本专利的保护范围的限定。在权利要求书所描述的范围内,本领域技术人员不经创造性劳动即可做出的各种修改和变形仍属本专利的保护范围。Although the specific implementation of the utility model has been described in detail in conjunction with the accompanying drawings, it should not be construed as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and deformations that can be made by those skilled in the art without creative efforts still belong to the protection scope of this patent.

Claims (5)

1.一种用于发电机叶片静载荷试验的载荷加载装置,其特征在于:包括固定组件和加载组件;1. A load loading device for a static load test of a generator blade, characterized in that: it includes a fixed assembly and a loading assembly; 所述固定组件包括钢轨;在所述钢轨沿直线的延伸处设有固定底座;在所述固定底座上设有定位孔;The fixed assembly includes a steel rail; a fixed base is provided at the extension of the steel rail along a straight line; a positioning hole is provided on the fixed base; 所述加载组件包括驱动电机和设于加载小车内的固定夹具;所述加载小车底部设有与钢轨配合的行走轮;所述加载小车侧部设有控制台;所述控制台内置有PLC控制器,控制台表面为显示器;所述驱动电机与PLC控制器通过导线连接;所述固定夹具通过钢绳与驱动电机主轴相连。The loading assembly includes a driving motor and a fixing fixture arranged in the loading trolley; the bottom of the loading trolley is provided with a walking wheel that matches the rail; the side of the loading trolley is provided with a console; the console is equipped with a built-in PLC control The console surface is a display; the driving motor is connected to the PLC controller through wires; the fixing fixture is connected to the main shaft of the driving motor through a steel rope. 2.根据权利要求1所述的用于发电机叶片静载荷试验的载荷加载装置,其特征在于:所述固定夹具外部为钢框架;在所述钢框架内部设有与钢绳连接的夹块;所述夹块的表面紧贴有橡胶垫。2. The load loading device for the static load test of generator blades according to claim 1, characterized in that: the outside of the fixing fixture is a steel frame; the inside of the steel frame is provided with a clamp block connected with a steel rope ; The surface of the clamping block is closely attached to a rubber pad. 3.根据权利要求1所述的用于发电机叶片静载荷试验的载荷加载装置,其特征在于:所述驱动电机为伺服电机。3. The load loading device for the static load test of generator blades according to claim 1, wherein the driving motor is a servo motor. 4.根据权利要求3所述的用于发电机叶片静载荷试验的载荷加载装置,其特征在于:所述伺服电机设于龙门吊支架顶部;所述龙门吊支架固定于加载小车上。4. The load loading device for the static load test of generator blades according to claim 3, characterized in that: the servo motor is arranged on the top of the gantry crane bracket; the gantry crane bracket is fixed on the loading trolley. 5.根据权利要求4所述的用于发电机叶片静载荷试验的载荷加载装置,其特征在于:所述龙门吊支架上设有嵌放导线的凹槽。5. The load loading device for static load test of generator blades according to claim 4, characterized in that: said gantry crane bracket is provided with grooves for embedding wires.
CN201720622052.1U 2017-06-01 2017-06-01 A kind of load charger for generator blade static load test Expired - Fee Related CN206738080U (en)

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CN109374403A (en) * 2018-12-25 2019-02-22 江苏金风科技有限公司 Blade test platform and blade test method
CN112268691A (en) * 2020-10-28 2021-01-26 山东理工大学 Dead weight balancing device used in static force loading and side-pulling test of wind power blade
CN115420444A (en) * 2021-05-31 2022-12-02 惠阳航空螺旋桨有限责任公司 Propeller blade rigidity test method and propeller blade rigidity test mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109374403A (en) * 2018-12-25 2019-02-22 江苏金风科技有限公司 Blade test platform and blade test method
CN109374403B (en) * 2018-12-25 2021-01-22 江苏金风科技有限公司 Blade testing platform and blade testing method
CN112268691A (en) * 2020-10-28 2021-01-26 山东理工大学 Dead weight balancing device used in static force loading and side-pulling test of wind power blade
CN115420444A (en) * 2021-05-31 2022-12-02 惠阳航空螺旋桨有限责任公司 Propeller blade rigidity test method and propeller blade rigidity test mechanism

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