CN205748872U - A wind field simulator for ocean engineering model tests - Google Patents
A wind field simulator for ocean engineering model tests Download PDFInfo
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Abstract
Description
技术领域technical field
本实用新型涉及一种用于海洋工程模型试验的风场模拟装置,属于海洋工程技术领域。The utility model relates to a wind field simulation device used for ocean engineering model tests, which belongs to the technical field of ocean engineering.
背景技术Background technique
海洋工程结构物,如海上采油平台、海上风电机组等长期承受风、浪、流复杂环境荷载作用,其相关研究更多地依赖波浪水池模型试验,而模型试验结果的准确性和可靠性与环境荷载模拟装置密切相关,其中风荷载模拟装置便是非常重要的环境荷载模拟装置之一。Ocean engineering structures, such as offshore oil production platforms and offshore wind turbines, have been subjected to complex environmental loads of wind, waves, and currents for a long time. The related research relies more on wave pool model tests, and the accuracy and reliability of model test results are not related to the environment. The load simulation device is closely related, and the wind load simulation device is one of the very important environmental load simulation devices.
对海洋环境风荷载的模拟,通常采用两种基本办法,一种方法是风洞模拟,如哈尔滨工业大学风洞浪槽联合实验室,风洞可以模拟出较高品质的风场,但是其缺陷表现在(1)风洞建设费用和模型试验费用均非常高昂;(2)由于整体造风将干扰波浪的自由面运动而往往导致结构的动力响应失真;另一种方法是目前广泛采用的简易造风装置模拟,由一组或多组风机组成风机阵,放置在池边或拖车上面,靠近试验模型进行局部造风,对于简易造风装置,具有代表性的是文献[1]中描述的装置,其缺陷是没有整流措施品质差,噪音大,受池岸干扰,无测控系统;后来文献[2]做了进一步的改进,增加了整流装置,但是由于没有收缩段和消声器,风速下降非常快,能耗大,噪音大,且无测控系统;For the simulation of wind load in the marine environment, two basic methods are usually used. One method is wind tunnel simulation, such as Harbin Institute of Technology Wind Tunnel Wave Trough Joint Laboratory. Wind tunnels can simulate high-quality wind fields, but their defects It is manifested in (1) the cost of wind tunnel construction and model test is very high; (2) the dynamic response of the structure is often distorted because the overall wind generation will interfere with the free surface motion of the wave; another method is the simple Simulation of wind-generating devices, consisting of one or more groups of fans to form a fan array, placed on the poolside or on a trailer, close to the test model for local wind-generating, for simple wind-generating devices, the representative one is the one described in the literature [1] The defect of the device is that there is no rectification measure, poor quality, high noise, interference from the pool bank, and no measurement and control system; later, the literature [2] made further improvements and added a rectification device, but because there is no contraction section and muffler, the wind speed drops very much. Fast, high energy consumption, high noise, and no measurement and control system;
[1]Hyunkyoung Shin,Pham Thanh Dam,Kwang Jin Jung etc.Model test ofnew floating offshore wind turbine platforms,Int.J.Naval Archit.Ocean Eng.(2013)5:199~209.http://dx.doi.org/10.2478/IJNAOE-2013-0127[1] Hyunkyoung Shin, Pham Thanh Dam, Kwang Jin Jung etc. Model test of new floating offshore wind turbine platforms, Int. J. Naval Archit. Ocean Eng. (2013) 5:199~209. http://dx.doi .org/10.2478/IJNAOE-2013-0127
[2]赵永生,何炎平,杨建民,顾敏童.海上浮动式风力机水池模型试验用造风装置,上海交通大学.申请号:201410152889.5申请日:2014-04-16[2] Zhao Yongsheng, He Yanping, Yang Jianmin, Gu Mintong. Wind generating device for model test of offshore floating wind turbine pool, Shanghai Jiaotong University. Application number: 201410152889.5 Application date: 2014-04-16
发明内容Contents of the invention
为了解决上述现有技术中存在的问题,本实用新型目的是提供一种用于海洋工程模型试验的风场模拟装置。该装置在动力段安放消声器,可以有效降低风机的噪音,利用下弯收缩过渡段可以有效排除池岸对模拟风场的干扰,使来自整流段的气流均匀加速,并改善出口段的流场品质,利用测控系统,可实现模拟海洋环境API风谱及垂向梯度风。In order to solve the above-mentioned problems in the prior art, the purpose of the utility model is to provide a wind field simulation device for ocean engineering model tests. The device is equipped with a muffler in the power section, which can effectively reduce the noise of the fan. The use of the downward-bending contraction transition section can effectively eliminate the interference of the pool bank on the simulated wind field, so that the airflow from the rectification section can be evenly accelerated, and the flow field quality of the outlet section can be improved. , using the measurement and control system, the API wind spectrum and vertical gradient wind of the simulated marine environment can be realized.
为了实现上述发明目的,解决已有技术中存在的向题,本实用新型采取的技术方案是:一种用于海洋工程模型试验的风场模拟装置,包括风机阵装置及测控系统,所述风机阵装置包括入口段、动力段、整流段、下弯收缩过渡段及稳定出口段,其中,所述入口段、动力段、整流段及稳定出口段的形状均为等截面矩形筒体,并均为水平设置,所述下弯收缩过渡段的形状为不规则矩形筒体,进气端和出气端均为矩形截面,上下面和两侧为曲面,所述动力段内部安装有上、中、底层风机组构成的风机阵,每层风机组由5台风机组成,风机阵中的每台风机均附带一台电动机,每层5台电动机为一组,构成上、中、底层电动机组,在靠近整流段位置安装有消声器;所述整流段内部安装有蜂窝器和阻尼网,阻尼网放置在蜂窝器下游,用于导直气流、降低湍流度,所述稳定出口段侧壁沿垂直方向均匀设置上、中、底层皮托管,所述各段均由法兰相互连接,并在法兰连接处设有密封橡胶垫;所述测控系统包括稳定出口段的上、中、底层皮托管,动力段的上、中、底层风机组及上、中、底层电动机组,另外还包括外接上、中、底层微压差变送器,上、中、底层变频器,数据采集卡及工控机,所述稳定出口段的上、中、底层皮托管通过空心软管连接至外接上、中、底层微压差变送器输入端,所述上、中、底层微压差变送器输出端分别通过信号线与外接数据采集卡及工控机依次连接,所述外接数据采集卡通过导线分别与外接上、中、底层变频器、动力段的上、中、底层电动机组及上、中、底层风机组依次连接。In order to achieve the purpose of the above invention and solve the existing problems in the prior art, the technical solution adopted by the utility model is: a wind field simulation device for marine engineering model tests, including a fan array device and a measurement and control system, the fan The array device includes an inlet section, a power section, a rectification section, a downward bending contraction transition section and a stable outlet section, wherein, the shape of the inlet section, the power section, the rectification section and the stable outlet section are all rectangular cylinders with equal cross-sections, and are all It is set horizontally, and the shape of the downward bending contraction transition section is an irregular rectangular cylinder. The fan array formed by the bottom fan units, each fan unit is composed of 5 fans, and each fan in the fan array is attached with a motor, and each layer has 5 motors as a group to form the upper, middle and lower motor units. A muffler is installed near the rectifying section; honeycomb and damping net are installed inside the rectifying section, and the damping net is placed downstream of the honeycomb to direct the airflow and reduce turbulence, and the side wall of the stable outlet section is uniform along the vertical direction The upper, middle, and bottom pitot tubes are set, and the sections are connected to each other by flanges, and sealing rubber pads are provided at the flange joints; the measurement and control system includes the upper, middle, and bottom pitot tubes of the stable outlet section, and the power The upper, middle, and bottom fan units and the upper, middle, and bottom motor units of the upper, middle, and bottom sections also include externally connected upper, middle, and bottom micro-pressure transmitters, upper, middle, and bottom frequency converters, data acquisition cards, and industrial computers. The upper, middle, and bottom pitot tubes of the stable outlet section are connected to the input ends of the external upper, middle, and bottom micro-pressure differential transmitters through hollow hoses, and the output ends of the upper, middle, and bottom micro-pressure differential transmitters are respectively passed through The signal line is connected to the external data acquisition card and the industrial computer in sequence, and the external data acquisition card is respectively connected to the external upper, middle, and bottom frequency converters, the upper, middle, and bottom motor units of the power section, and the upper, middle, and bottom fan units through wires. Connect sequentially.
所述下弯收缩过渡段的下弯角度为20-30°,用于排除池岸对模拟风场的干扰。The downward bending angle of the downward bending contraction transition section is 20-30°, which is used to eliminate the interference of the pool bank on the simulated wind field.
所述下弯收缩过渡段出气端与进气端矩形截面面积之比为1:1.4-1.6。The ratio of the rectangular cross-sectional area of the air outlet end to the air inlet end of the downwardly curved contraction transition section is 1:1.4-1.6.
所述蜂窝器为正六边形格子结构,半径与边长比为1:4.5-5.5。The honeycomb is a regular hexagonal lattice structure, and the ratio of radius to side length is 1:4.5-5.5.
所述阻尼网为不锈钢丝网,网眼密度为15-24目。The damping net is a stainless steel wire net with a mesh density of 15-24 mesh.
所述稳定出口段水平轴线要低于入口段、动力段、整流段的水平轴线0.15-0.3m。The horizontal axis of the stable outlet section is 0.15-0.3m lower than the horizontal axes of the inlet section, power section and rectification section.
本实用新型有益效果是:一种用于海洋工程模型试验的风场模拟装置,包括风机阵装置及测控系统,所述风机阵装置包括入口段、动力段、整流段、下弯收缩过渡段及稳定出口段,其中,所述入口段、动力段、整流段及稳定出口段的形状均为等截面矩形筒体,并均为水平设置,所述下弯收缩过渡段的形状为不规则矩形筒体,进气端和出气端均为矩形截面,上下面和两侧为曲面,所述动力段内部安装有上、中、底层风机组构成的风机阵,每层风机组由5台风机组成,风机阵中的每台风机均附带一台电动机,每层5台电动机为一组,构成上、中、底层电动机组,在靠近整流段位置安装有消声器;所述整流段内部安装有蜂窝器和阻尼网,阻尼网放置在蜂窝器下游,用于导直气流、降低湍流度,所述稳定出口段侧壁沿垂直方向均匀设置上、中、底层皮托管,所述各段均由法兰相互连接,并在法兰连接处设有密封橡胶垫;所述测控系统包括稳定出口段的上、中、底层皮托管,动力段的上、中、底层风机组及上、中、底层电动机组,另外还包括外接上、中、底层微压差变送器,上、中、底层变频器,数据采集卡及工控机,所述稳定出口段的上、中、底层皮托管通过空心软管连接至外接上、中、底层微压差变送器输入端,所述上、中、底层微压差变送器输出端分别通过信号线与外接数据采集卡及工控机依次连接,所述外接数据采集卡通过导线分别与外接上、中、底层变频器、动力段的上、中、底层电动机组及上、中、底层风机组依次连接。与已有技术相比,本实用新型造风品 质高,而且成本远小于风洞,因此其便捷性和适用性较强,对海洋工程技术的发展具有积极的推动作用。The beneficial effects of the utility model are: a wind field simulation device used for ocean engineering model tests, including a fan array device and a measurement and control system, and the fan array device includes an inlet section, a power section, a rectification section, a downward bending contraction transition section and Stable outlet section, wherein, the shape of the inlet section, the power section, the rectification section and the stable outlet section are all rectangular cylinders with equal cross-sections, and they are all arranged horizontally, and the shape of the downwardly curved contraction transition section is an irregular rectangular cylinder Body, the air inlet end and the air outlet end are rectangular cross-sections, and the upper, lower, and two sides are curved surfaces. The power section is equipped with a fan array composed of upper, middle, and bottom fan units. Each fan unit is composed of 5 fans. Each fan in the fan array is equipped with a motor, and 5 motors on each floor form a group to form the upper, middle and bottom motor units, and a muffler is installed near the rectification section; the honeycomb and Damping net, the damping net is placed downstream of the honeycomb to direct the air flow and reduce the degree of turbulence. The side wall of the stable outlet section is evenly arranged with upper, middle and bottom Pitot tubes along the vertical direction, and each section is interconnected by flanges. connection, and a sealing rubber pad is provided at the flange connection; the measurement and control system includes the upper, middle and bottom pitot tubes of the stable outlet section, the upper, middle and bottom fan units and the upper, middle and bottom motor units of the power section, In addition, it also includes externally connected upper, middle, and bottom micro-pressure transmitters, upper, middle, and bottom frequency converters, data acquisition cards and industrial computers, and the upper, middle, and bottom pitot tubes of the stable outlet section are connected to the The input terminals of the upper, middle and bottom micro-pressure differential transmitters are externally connected, and the output terminals of the upper, middle and bottom micro-pressure differential transmitters are respectively connected to the external data acquisition card and the industrial computer through signal lines in sequence, and the external data acquisition The card is respectively connected with the external upper, middle and bottom frequency converters, the upper, middle and bottom motor units of the power section and the upper, middle and bottom fan units in sequence through wires. Compared with the prior art, the wind generation quality of the utility model is high, and the cost is much lower than that of a wind tunnel, so its convenience and applicability are strong, and it has a positive role in promoting the development of marine engineering technology.
附图说明Description of drawings
图1是本实用新型侧视剖面结构示意图。Fig. 1 is a side view sectional structure schematic diagram of the utility model.
图2是本实用新型俯视剖面结构示意图。Fig. 2 is a schematic diagram of a top view sectional structure of the utility model.
图3是本实用新型中的风机阵布置图。Fig. 3 is a layout diagram of the fan array in the utility model.
图4是本实用新型中的测控系统结构框图。Fig. 4 is a structural block diagram of the measurement and control system in the utility model.
图中:1、入口段,2、动力段,3、整流段,4、下弯收缩过渡段,5、稳定出口段,6、消声器,7、上层风机组,7a、中层风机组,7b、底层风机组,8、上层电动机组,8a、中层电动机组,8b、底层电动机组,9、蜂窝器,10、阻尼网,11、上层皮托管,11a、中层皮托管,11b、底层皮托管。In the figure: 1. Entrance section, 2. Power section, 3. Rectification section, 4. Downward bending contraction transition section, 5. Stable outlet section, 6. Muffler, 7. Upper fan unit, 7a, Middle fan unit, 7b, Bottom fan unit, 8, upper motor unit, 8a, middle motor unit, 8b, bottom motor unit, 9, honeycomb device, 10, damping net, 11, upper pitot tube, 11a, middle pitot tube, 11b, bottom pitot tube.
具体实施方式detailed description
下面结合附图对本实用新型作进一步说明。Below in conjunction with accompanying drawing, the utility model is further described.
如图1、2、3、4所示,一种用于海洋工程模型试验的风场模拟装置,包括风机阵装置及测控系统,所述风机阵装置包括入口段1、动力段2、整流段3、下弯收缩过渡段4及稳定出口段5,所述入口段1、动力段2、整流段3及稳定出口段5的形状均为等截面矩形筒体,并均为水平设置,其中,入口段1长为0.3m、宽为3.8m、高为2.4m;动力段2、整流段3长均为1.5m、宽均为3.8m、高均为2.4m;所述下弯收缩过渡段4的形状为不规则矩形筒体,进气端和出气端均为矩形截面,上下面和两侧为曲面,进气端宽为3.8m、高为2.4m,出气端宽为3.0m、高为2.0m,所述动力段2内部安装有上、中、底层风机组7、7a、7b构成的风机阵,每台风机均采用为6桨叶风扇,直径为0.7m,每层风机组由5台风机组成,风机阵中的每台风机均附带一台电动机,均采用为三相异步交流电动机,每台功率为5.5KW,每层5台电动机为一组,构成上、中、底层电动机组8、8a、8b,在靠近整流段3位置安装有消声器6;所述整流段3 内部安装有蜂窝器9和阻尼网10,阻尼网10放置在蜂窝器9的下游,间距为0.2m,用于导直气流、降低湍流度,所述稳定出口段5侧壁沿垂直方向均匀设置上、中、底层皮托管11、11a、11b,所述各段均由法兰相互连接,并在法兰连接处设有密封橡胶垫;所述测控系统包括稳定出口段5的上、中、底层皮托管11、11a、11b,动力段2的上、中、底层风机组7、7a、7b及上、中、底层电动机组8、8a、8b,另外还包括外接上、中、底层微压差变送器,上、中、底层变频器,数据采集卡及工控机,所述稳定出口段5的上、中、底层皮托管11、11a、11b通过空心软管连接至外接上、中、底层微压差变送器输入端,所述上、中、底层微压差变送器输出端分别通过信号线与外接数据采集卡及工控机依次连接,所述外接数据采集卡通过导线分别与外接上、中、底层变频器、动力段的上、中、底层电动机组8、8a、8b及上、中、底层风机组7、7a、7b依次连接。具体工作过程如下:当风荷载模拟装置使用时,接通风荷载模拟装置的主电路,将外接上、中、底层变频器通电,并启动上、中、底层电动机组8、8a、8b及上、中、底层皮托管11、11a、11b,将风场测量信息由外接上、中、底层微压差变送器转换成电压信号输送给外接数据采集卡,经处理后传输给外接工控机,进行监视和控制运行状态,并按设定值反馈给外接上、中、底层变频器,通过变频器的信号接收进行频率改变,整个控制系统不断接收反馈,从而实现试验要求的风荷载特征。所述下弯收缩过渡段的下弯角度为30°,用于排除池岸对模拟风场的干扰,所述蜂窝器9为正六边形格子结构,半径与边长比为1:5。所述阻尼网10为不锈钢丝网,网眼密度为18目,所述稳定出口段5水平轴线要低于入口段1、动力段2、整流段3的水平轴线0.2m。As shown in Figures 1, 2, 3, and 4, a wind field simulator for ocean engineering model tests includes a fan array device and a measurement and control system. The fan array device includes an inlet section 1, a power section 2, and a rectification section 3. The downward bending contraction transition section 4 and the stable outlet section 5, the shape of the inlet section 1, the power section 2, the rectification section 3 and the stable outlet section 5 are all rectangular cylinders with equal cross-sections, and are all arranged horizontally, wherein, The entrance section 1 is 0.3m long, 3.8m wide, and 2.4m high; the power section 2 and rectification section 3 are both 1.5m long, 3.8m wide, and 2.4m high; The shape of 4 is an irregular rectangular cylinder, the air inlet end and the air outlet end are rectangular cross-sections, the upper and lower sides and both sides are curved surfaces, the air inlet end is 3.8m wide and 2.4m high, and the air outlet end is 3.0m wide and high 2.0m, the inside of the power section 2 is equipped with a fan array composed of upper, middle and bottom fan units 7, 7a, 7b, each fan adopts a 6-blade fan with a diameter of 0.7m, and each layer of fan units consists of Composed of 5 fans, each fan in the fan array is equipped with a motor, all of which are three-phase asynchronous AC motors, each with a power of 5.5KW, and 5 motors on each floor form a group to form the upper, middle and bottom motors Groups 8, 8a, 8b have a muffler 6 installed near the rectifying section 3; a honeycomb 9 and a damping net 10 are installed inside the rectifying section 3, and the damping net 10 is placed downstream of the honeycomb 9 with a spacing of 0.2m. For directing the airflow and reducing the degree of turbulence, the side walls of the stable outlet section 5 are uniformly arranged with upper, middle, and bottom pitot tubes 11, 11a, 11b along the vertical direction, and the sections are connected to each other by flanges. Sealing rubber pads are provided at the blue connection; the measurement and control system includes the upper, middle and bottom pitot tubes 11, 11a, 11b of the stable outlet section 5, the upper, middle, and bottom fan units 7, 7a, 7b and upper , middle and bottom motor units 8, 8a, 8b, and also include externally connected upper, middle and bottom micro-pressure differential transmitters, upper, middle and bottom frequency converters, data acquisition cards and industrial computers, and the stable outlet section 5 The upper, middle, and bottom pitot tubes 11, 11a, 11b are connected to the input ends of the external upper, middle, and bottom micro-pressure differential transmitters through hollow hoses, and the output ends of the upper, middle, and bottom micro-pressure differential transmitters are respectively passed through The signal line is connected with the external data acquisition card and the industrial computer in turn, and the external data acquisition card is respectively connected with the upper, middle and bottom frequency converters of the external connection, the upper, middle and bottom motor groups 8, 8a, 8b of the power section and the upper and lower floors through wires. The middle and bottom fan units 7, 7a, 7b are connected in sequence. The specific working process is as follows: when the wind load simulation device is in use, connect the main circuit of the ventilation load simulation device, power on the external upper, middle and bottom frequency converters, and start the upper, middle and bottom motor units 8, 8a, 8b and the upper and lower The middle and bottom pitot tubes 11, 11a, 11b convert the wind field measurement information from the external upper, middle and bottom micro pressure difference transmitters into voltage signals, send them to the external data acquisition card, and transmit them to the external industrial computer after processing. Monitor and control the running status, and feed back to the external upper, middle and bottom frequency converters according to the set value, and change the frequency through the signal reception of the frequency converter, and the whole control system continuously receives feedback, so as to realize the wind load characteristics required by the test. The downward bending angle of the downward bending contraction transition section is 30°, which is used to eliminate the interference of the pool bank on the simulated wind field. The honeycomb 9 is a regular hexagonal lattice structure, and the ratio of radius to side length is 1:5. The damping net 10 is a stainless steel wire mesh with a mesh density of 18 meshes, and the horizontal axis of the stable outlet section 5 is 0.2m lower than the horizontal axes of the inlet section 1, the power section 2, and the rectification section 3.
本实用新型优点在于:一种用于海洋工程模型试验的风场模拟装置,造风品质高,而且成本远小于风洞,因此其便捷性和适用性较强,对海洋工程技术的发展具有积极的推动作用。The utility model has the advantages that: a wind field simulation device used for ocean engineering model tests has high wind quality, and the cost is much lower than that of a wind tunnel, so its convenience and applicability are strong, and it has a positive effect on the development of ocean engineering technology. impetus.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106526069A (en) * | 2016-12-22 | 2017-03-22 | 公安部四川消防研究所 | Environment wind field simulation unit and environment wind field simulation system applied to fireproof performance test of building exterior wall |
CN107543680A (en) * | 2017-10-10 | 2018-01-05 | 重庆交通大学 | It is a kind of to realize wind, wave, the experimental system of rain coupling |
CN109163874A (en) * | 2018-08-24 | 2019-01-08 | 中国飞机强度研究所 | The self-walking fan battle array that can be freely combined |
CN109515744A (en) * | 2018-11-02 | 2019-03-26 | 合肥工业大学 | Contracting is than aerostatics experimental rig under a kind of complex environment |
CN113050456A (en) * | 2021-03-26 | 2021-06-29 | 中国人民解放军63660部队 | Ground simulation test system for near space aerostat |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106526069A (en) * | 2016-12-22 | 2017-03-22 | 公安部四川消防研究所 | Environment wind field simulation unit and environment wind field simulation system applied to fireproof performance test of building exterior wall |
CN106526069B (en) * | 2016-12-22 | 2018-12-04 | 公安部四川消防研究所 | Surroundings wind field simulation system applied to external wall fire-protecting test |
CN107543680A (en) * | 2017-10-10 | 2018-01-05 | 重庆交通大学 | It is a kind of to realize wind, wave, the experimental system of rain coupling |
CN109163874A (en) * | 2018-08-24 | 2019-01-08 | 中国飞机强度研究所 | The self-walking fan battle array that can be freely combined |
CN109515744A (en) * | 2018-11-02 | 2019-03-26 | 合肥工业大学 | Contracting is than aerostatics experimental rig under a kind of complex environment |
CN113050456A (en) * | 2021-03-26 | 2021-06-29 | 中国人民解放军63660部队 | Ground simulation test system for near space aerostat |
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