CN209802668U - A model tester for the low-pressure rotor system of a gear-driven fan engine - Google Patents
A model tester for the low-pressure rotor system of a gear-driven fan engine Download PDFInfo
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Abstract
一种齿轮传动风扇发动机低压转子系统模型试验器，属于机械领域，该包括动力、低压涡轮转子、支承、风扇转子和连接部分。动力部分为低压涡轮转子部分提供动力；低压涡轮转子部分包括两个支点A、B，A位于低压转子轴前端凸台，B位于低压转子轴后端凸台；风扇转子部分包括一个支点C，C位于风扇转子轴后端凸台；支承部分包括三套轴承部件，分别位于三个支点A、B、C处。各部分之间通过连接部分连接。该装置中所有回转零件轴线共线，扭矩由电机输入分别经由低压转子轴、低压涡轮配重盘、低压压气机配重盘和齿轮机匣，最终流向风扇转子部分。本实用新型结构简单，便于安装满足工程需要，能够通过试验方式研究星型齿轮柔性转子耦合系统的固有特性及不平衡响应。
The utility model relates to a model tester for a low-pressure rotor system of a gear transmission fan engine, which belongs to the mechanical field and includes power, a low-pressure turbine rotor, a support, a fan rotor and connecting parts. The power part provides power for the low-pressure turbine rotor part; the low-pressure turbine rotor part includes two fulcrums A, B, A is located on the boss at the front end of the low-pressure rotor shaft, and B is located at the boss at the rear end of the low-pressure rotor shaft; the fan rotor part includes a fulcrum C, C It is located on the boss at the rear end of the fan rotor shaft; the supporting part includes three sets of bearing components, which are respectively located at three fulcrums A, B, and C. The parts are connected by connecting parts. The axes of all rotating parts in the device are collinear, and the torque is input by the motor through the low-pressure rotor shaft, the low-pressure turbine weight plate, the low-pressure compressor weight plate and the gear casing, and finally flows to the fan rotor part. The utility model has a simple structure, is convenient for installation and satisfies engineering needs, and can study the inherent characteristics and unbalanced response of the star gear flexible rotor coupling system through the test mode.
Description
技术领域technical field
本实用新型属于机械领域的实验装置，涉及一种齿轮传动风扇发动机低压转子系统模型试验器。The utility model belongs to an experimental device in the mechanical field, and relates to a model tester for a low-voltage rotor system of a gear-driven fan engine.
背景技术Background technique
齿轮传动风扇发动机凭借其燃油经济性高以及污染排放量少等性能优势，在航空发动机领域内拥有巨大的发展潜力及市场应用前景。低压转子系统是齿轮传动风扇发动机的核心部件之一，结构形式为具有星型齿轮传动结构的三支点转子系统。由于复杂的齿轮结构，且转子跨距大、工作转速较高，低压压气机-涡轮转子呈柔性，系统存在多阶共振转速，这使得转子系统结构和动力学设计变得更加困难。同时，齿轮耦合转子系统的不平衡振动一直是人们关注的问题，在工程上转子系统的自激振动常有发生，甚至有造成事故。该星型齿轮柔性转子耦合系统的振动问题已逐渐成为亟待研究的课题之一。Due to its performance advantages such as high fuel economy and low pollution emissions, the geared fan engine has great development potential and market application prospects in the field of aeroengines. The low-pressure rotor system is one of the core components of the geared fan engine, and its structure is a three-point rotor system with star gear transmission structure. Due to the complex gear structure, large rotor span and high operating speed, the low-pressure compressor-turbine rotor is flexible, and the system has multi-order resonance speeds, which makes the structural and dynamic design of the rotor system more difficult. At the same time, the unbalanced vibration of the gear-coupled rotor system has always been a concern of people. In engineering, the self-excited vibration of the rotor system often occurs, and even causes accidents. The vibration problem of the star gear flexible rotor coupling system has gradually become one of the urgent research topics.
由于转子理论模型存在局限性，而直接基于原型机进行试验研究需要很长的周期且成本较高，故基于原型机低压转子系统结构特点遵循相似性原则研制转子模型试验器，通过采用仿真模拟结合试验的方式研究该星型齿轮柔性转子耦合系统的固有特性及不平衡响应，对于深入研究齿轮传动风扇发动机低压转子系统的耦合振动规律具有指导意义，可为我国航空发动机转子系统的设计和故障分析奠定基础。Due to the limitations of the theoretical model of the rotor, it takes a long period of time and high cost to conduct experimental research directly based on the prototype machine, so the rotor model tester was developed based on the structural characteristics of the low-voltage rotor system of the prototype machine and followed the principle of similarity. Studying the inherent characteristics and unbalanced response of the star gear flexible rotor coupling system by means of experiments has guiding significance for in-depth research on the coupling vibration law of the low-pressure rotor system of geared fan engines, and can be used for the design and failure analysis of aeroengine rotor systems in my country. Lay the groundwork.
实用新型内容Utility model content
针对现有技术存在的问题，本实用新型提供一种齿轮传动风扇发动机低压转子系统模型试验器，实现通过试验的方式研究该星型齿轮柔性转子耦合系统的固有特性及不平衡响应。Aiming at the problems existing in the prior art, the utility model provides a model tester for the low-pressure rotor system of a gear-driven fan engine, which realizes the study of the inherent characteristics and unbalanced response of the star gear flexible rotor coupling system through experiments.
本实用新型采用如下的技术方案实现：The utility model adopts following technical scheme to realize:
一种齿轮传动风扇发动机低压转子系统模型试验器，该试验器按照各部分的功能可以划分为：动力部分、低压涡轮转子部分、支承部分、风扇转子部分和连接部分。The utility model relates to a model tester for a low-pressure rotor system of a gear transmission fan engine. The tester can be divided into a power part, a low-pressure turbine rotor part, a supporting part, a fan rotor part and a connection part according to the functions of each part.
所述的动力部分包括：电机25、齿轮机匣20。所述的电机25安装在桁架结构的支架17上，用于对低压涡轮转子部分提供动力，电机25轴线与支架17中轴线共线。所述的齿轮机匣20用于降低风扇配重盘2的转速，同时提高压气机及涡轮效率，通过螺栓安装在机匣支承16上，机匣支承16通过滑块能够在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。The power part includes: a motor 25 and a gear casing 20 . The motor 25 is installed on the bracket 17 of the truss structure, and is used to provide power to the low-pressure turbine rotor part, and the axis of the motor 25 is collinear with the central axis of the bracket 17 . Described gear casing 20 is used for reducing the rotating speed of fan counterweight plate 2, improves compressor and turbine efficiency simultaneously, is installed on casing support 16 by bolt, and casing support 16 can be on the mounting surface of support 17 by slide Move upward, and fix it with bolts after reaching the designated installation position.
所述的低压涡轮转子部分包括：低压转子轴12，低压涡轮配重盘13，低压压气机配重盘8，涨套压盖1-2、1-3。所述的低压转子轴12前端穿过低压涡轮配重盘13中心孔与膜片联轴器24连接，通过涨套压盖1-3限制低压涡轮配重盘13的轴向位移，所述膜片联轴器24与电机25连接。所述的低压转子轴12后端穿过低压压气机配重盘8的中心孔后与依次两个梅花联轴器19-2、19-1连接，且两个梅花联轴器19-1、19-2之间设有齿轮机匣20，通过涨套压盖1-2限制低压压气机配重盘8的轴向位移。所述的低压涡轮配重盘13以及低压压气机配重盘8的几何参数是实际的涡轮和压气机经过力学等效计算得来的。所述的低压涡轮转子部分包括两个支点A、B，其中A位于低压转子轴12的前端凸台部分，B位于低压转子轴12的后端凸台部分。The low-pressure turbine rotor part includes: a low-pressure rotor shaft 12, a low-pressure turbine weight plate 13, a low-pressure compressor weight plate 8, and expansion sleeve glands 1-2, 1-3. The front end of the low-pressure rotor shaft 12 passes through the central hole of the low-pressure turbine counterweight plate 13 and is connected to the diaphragm coupling 24, and the axial displacement of the low-pressure turbine counterweight disc 13 is limited by the expansion sleeve gland 1-3. The plate coupling 24 is connected with the motor 25 . The rear end of the low-pressure rotor shaft 12 passes through the center hole of the counterweight plate 8 of the low-pressure compressor and is connected with two plum blossom couplings 19-2, 19-1 in sequence, and the two plum blossom couplings 19-1, A gear casing 20 is arranged between 19-2, and the axial displacement of the counterweight plate 8 of the low-pressure compressor is limited by the expansion sleeve gland 1-2. The geometric parameters of the low-pressure turbine counterweight plate 13 and the low-pressure compressor counterweight disc 8 are obtained through mechanical equivalent calculation of the actual turbine and compressor. The low-pressure turbine rotor part includes two fulcrums A and B, wherein A is located at the front end boss portion of the low-pressure rotor shaft 12 , and B is located at the rear end boss portion of the low-pressure rotor shaft 12 .
所述的风扇转子部分包括：涨套压盖1-1、风扇配重盘2、风扇转子轴7。所述风扇转子轴7前端与梅花联轴器19-1连接，后端安装风扇配重盘2，通过涨套压盖1-1限制风扇配重盘2的轴向位移。所述的风扇转子部分包括一个支点C，C位于风扇转子轴7的后端凸台部分。The fan rotor part includes: an expansion sleeve gland 1-1, a fan counterweight plate 2, and a fan rotor shaft 7. The front end of the fan rotor shaft 7 is connected to the plum blossom coupling 19-1, and the fan counterweight plate 2 is installed at the rear end, and the axial displacement of the fan counterweight plate 2 is limited by the expansion sleeve gland 1-1. The fan rotor part includes a fulcrum C, and C is located at the rear end boss part of the fan rotor shaft 7 .
所述的支承部分包括三套轴承部件，分别位于三个支点A、B、C所在位置。所述支点A、C均采用弹性支承结构。在支点A处：滚棒轴承座14后部可动部分通过承力锥壳5-2连接在支承幅板15-3的轮毂上，支承幅板15-3可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定；在支点C处：圆锥滚子轴承座3后部可动部分通过承力锥壳5-1连接在支承幅板15-1的轮毂上，支承幅板15-1可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。该种支承结构可改变系统结构的动力特性，以降低振动水平。所述支点B处：位于试验器中部(低压转子轴12的后端凸台部分)，它的刚度对于整体的性能有很大的影响，故而采用刚性支承结构，深沟球轴承座11通过支承板10与支承幅板15-2的轮毂连接，支承幅板15-2可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。三套轴承部件具体结构为：The supporting part includes three sets of bearing components, which are respectively located at the positions of the three fulcrums A, B, and C. Both the fulcrums A and C adopt an elastic support structure. At fulcrum A: the movable part at the rear of the roller bearing seat 14 is connected to the hub of the support web 15-3 through the load-bearing cone shell 5-2, and the support web 15-3 can move on the mounting surface of the bracket 17 , to be fixed by bolts after reaching the designated installation position; at the fulcrum C: the movable part of the rear part of the tapered roller bearing seat 3 is connected to the hub of the support web 15-1 through the load-bearing cone shell 5-1, and the support web 15-1 can move on the mounting surface of the bracket 17, and be fixed by bolts after reaching the designated mounting position. This support structure can change the dynamic characteristics of the system structure to reduce the vibration level. The fulcrum B: located in the middle of the tester (the rear end boss part of the low-pressure rotor shaft 12), its stiffness has a great influence on the overall performance, so a rigid support structure is adopted, and the deep groove ball bearing seat 11 is supported by The plate 10 is connected with the hub of the supporting web 15-2, and the supporting web 15-2 can move on the installation surface of the support 17, and is fixed by bolts after reaching the designated installation position. The specific structure of the three sets of bearing components is:
所述的A支点轴承部件包括：滚棒轴承23，锁紧螺母21-2，滚棒轴承座14，轴承压盖9-2，支承幅板15-3，承力锥壳5-2，轴承鼠笼6-2。所述的滚棒轴承23安装在滚棒轴承座14内，锁紧螺母21-2通过螺纹拧在低压转子轴12上，用以限制滚棒轴承23内圈的轴向窜动。轴承压盖9-2的小端面与滚棒轴承23的外圈端面接触，并借助螺栓固定在滚棒轴承座14上，用以限制滚棒轴承23外圈的轴向窜动。滚棒轴承座14上开有小孔，通过螺栓固定在轴承鼠笼6-2的小端面，轴承鼠笼6-2的大端面上开有小孔，通过螺栓固定在承力锥壳5-2的小端面。承力锥壳5-2通过螺栓安装在支承幅板15-3的轮毂上。该设计可以抑制轴的弯曲变形，降低转子的振动。支承幅板15-3可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。The A fulcrum bearing components include: roller bearing 23, lock nut 21-2, roller bearing seat 14, bearing gland 9-2, support web 15-3, bearing cone shell 5-2, bearing Rat cage 6-2. The roller bearing 23 is installed in the roller bearing housing 14, and the lock nut 21-2 is screwed on the low-pressure rotor shaft 12 through threads to limit the axial movement of the inner ring of the roller bearing 23. The small end face of the bearing gland 9-2 is in contact with the end face of the outer ring of the roller bearing 23, and is fixed on the roller bearing seat 14 by means of bolts to limit the axial movement of the outer ring of the roller bearing 23. There is a small hole on the roller bearing seat 14, which is fixed on the small end surface of the bearing cage 6-2 by bolts, and the large end surface of the bearing cage 6-2 has a small hole, which is fixed on the load-bearing cone shell 5-2 by bolts. 2 small end faces. The load-bearing cone shell 5-2 is installed on the hub of the support web 15-3 by bolts. This design can suppress the bending deformation of the shaft and reduce the vibration of the rotor. The support web 15-3 can move on the mounting surface of the support 17, and be fixed by bolts after reaching the designated mounting position.
所述的B支点轴承部件包括：深沟球轴承座11，轴承压盖9-1，支承板10，支承幅板15-2，锁紧螺母21-1，深沟球轴承22。所述的锁紧螺母21-1通过螺纹拧在低压转子轴12上，用以限制深沟球轴承22内圈的轴向窜动。所述的轴承压盖9-1与深沟球轴承22的外圈接触，并通过螺栓安装在深沟球轴承座11上，用来限制深沟球轴承22的外圈在低压转子轴上的轴向窜动。深沟球轴承座11通过螺栓与支承板10相连接，螺栓将支承板10固定在支承幅板15-2的轮毂上。支承幅板15-2可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。The B fulcrum bearing components include: a deep groove ball bearing seat 11, a bearing gland 9-1, a support plate 10, a support web 15-2, a lock nut 21-1, and a deep groove ball bearing 22. The lock nut 21 - 1 is threaded on the low pressure rotor shaft 12 to limit the axial movement of the inner ring of the deep groove ball bearing 22 . The bearing gland 9-1 is in contact with the outer ring of the deep groove ball bearing 22, and is installed on the deep groove ball bearing seat 11 by bolts, so as to limit the distance between the outer ring of the deep groove ball bearing 22 on the low-pressure rotor shaft. Axial movement. The deep groove ball bearing seat 11 is connected with the support plate 10 by bolts, and the bolts fix the support plate 10 on the hub of the support web 15-2. The support web 15-2 can move on the mounting surface of the support 17, and be fixed by bolts after reaching the designated mounting position.
所述的C支点轴承部件包括：圆锥滚子轴承18，圆锥滚子轴承座3，轴承压盖9-3，支承幅板15-1，承力锥壳5-1，轴承鼠笼6-1，衬套4。圆锥滚子轴承18安装在圆锥滚子轴承座3里，轴承压盖9-3的小端面与圆锥滚子轴承18的外圈端面接触，并借助螺栓固定在圆锥滚子轴承座3上，用以限制圆锥滚子轴承座3外圈的轴向窜动。圆锥滚子轴承座3上开有小孔，通过螺栓固定在轴承鼠笼6-1的小端面，轴承鼠笼6-1的大端面上开有小孔，通过螺栓固定在承力锥壳5-1的小端面。承力锥壳5-1通过螺栓安装在支承幅板15-1的轮毂上。支承幅板15-1可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。所述衬套4为圆筒件，其外壁与圆锥滚子轴承座3的内壁贴合。衬套4用来将一对圆锥滚子轴承18隔离开来，使得一对圆锥滚子轴承18“反装”。The C fulcrum bearing components include: tapered roller bearing 18, tapered roller bearing housing 3, bearing gland 9-3, supporting web 15-1, bearing cone shell 5-1, bearing squirrel cage 6-1 , Bushing 4. The tapered roller bearing 18 is installed in the tapered roller bearing seat 3, and the small end face of the bearing gland 9-3 is in contact with the end face of the outer ring of the tapered roller bearing 18, and is fixed on the tapered roller bearing seat 3 by means of bolts. To limit the axial movement of the outer ring of the tapered roller bearing housing 3 . There are small holes on the tapered roller bearing seat 3, which are fixed on the small end face of the bearing cage 6-1 by bolts, and small holes are opened on the large end face of the bearing cage 6-1, which are fixed on the bearing cone shell 5 by bolts Small end face of -1. The load-bearing cone shell 5-1 is installed on the hub of the support web 15-1 by bolts. The support web 15-1 can move on the mounting surface of the support 17, and be fixed by bolts after reaching the designated mounting position. The bushing 4 is a cylindrical member, and its outer wall is attached to the inner wall of the tapered roller bearing housing 3 . The bushing 4 is used to isolate the pair of tapered roller bearings 18 so that the pair of tapered roller bearings 18 are "reversed".
支承部分除A、B、C三个轴承部件外，还包括机匣支承16，齿轮机匣20通过螺栓安装在机匣支承16，机匣支承16可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。In addition to the three bearing parts A, B, and C, the support part also includes a casing support 16. The gear casing 20 is installed on the casing support 16 through bolts. The casing support 16 can move on the mounting surface of the bracket 17. After specifying the installation position, it is fixed by bolts.
所述的连接部分包括：梅花联轴器19(两个,19-1,19-2)，膜片联轴器24，以及各个螺栓。膜片联轴器24将电机25的输出端与低压转子轴12的输入端相连，梅花联轴器19-2将低压转子轴12的输出端与齿轮机匣20的输入端相连，梅花联轴器19-1将齿轮机匣20的输出端与风扇转子轴7的输入端相连。The connecting part includes: plum blossom coupling 19 (two, 19-1, 19-2), diaphragm coupling 24, and various bolts. The diaphragm coupling 24 connects the output end of the motor 25 with the input end of the low-pressure rotor shaft 12, and the plum blossom coupling 19-2 connects the output end of the low-pressure rotor shaft 12 with the input end of the gear case 20, and the plum blossom coupling A device 19-1 connects the output end of the gear casing 20 with the input end of the fan rotor shaft 7.
本实用新型所有回转零件轴线共线，扭矩由电机25输入分别经由低压转子轴12、低压涡轮配重盘13、低压压气机配重盘8和齿轮机匣20，最终流向风扇配重盘2。The axes of all the rotary parts of the utility model are collinear, and the torque is input by the motor 25 through the low-pressure rotor shaft 12, the low-pressure turbine counterweight plate 13, the low-pressure compressor counterweight disc 8 and the gear casing 20, and finally flows to the fan counterweight disc 2.
与传统的转子试验器相比，本实用新型的有益效果为：Compared with the traditional rotor tester, the beneficial effects of the utility model are:
为保证传动系统支承结构的相似性，对齿轮机匣20采用挂点的承力支板结构，将齿轮机匣20用螺栓连接在机匣支承16上。整机支架17上表面为试验器转子系统各部件的安装基面，合理控制了安装误差，一定程度上避免了齿轮机匣20输入输出轴与低压转子轴12不对中的问题。本实用新型采用模型试验器相似设计的思想，在风扇转子轴7后支点(即支点C)和低压转子轴12前支点(即支点A)设计了弹性支承结构(轴承部件A、C)与真实的支承结构契合度高，在结构简单便于安装的同时也满足工程需要。In order to ensure the similarity of the supporting structure of the transmission system, the gear casing 20 adopts a load-bearing support plate structure with hanging points, and the gear casing 20 is connected to the casing support 16 with bolts. The upper surface of the whole machine bracket 17 is the installation base surface of each component of the rotor system of the tester, which reasonably controls the installation error and avoids the misalignment of the input and output shafts of the gear casing 20 and the low-pressure rotor shaft 12 to a certain extent. The utility model adopts the idea of similar design of the model tester, and designs the elastic support structure (bearing parts A, C) at the rear fulcrum of the fan rotor shaft 7 (i.e. the fulcrum C) and the front fulcrum (i.e. the fulcrum A) of the low-pressure rotor shaft 12. The supporting structure has a high degree of fit, and the structure is simple and easy to install, and it also meets the engineering needs.
附图说明Description of drawings
图1为本实用新型的三维结构图；Fig. 1 is the three-dimensional structural drawing of the present utility model;
图2为本实用新型的主视图；Fig. 2 is the front view of the utility model;
图3为本实用新型的俯视图；Fig. 3 is the top view of the utility model;
图4四为本实用新型的侧视图；Fig. 4 four is the side view of the utility model;
图5为齿轮机匣支承方案；Fig. 5 is the supporting scheme of the gear case;
图中：1涨套压盖(三个，1-1，1-2，1-3)；2风扇配重盘；3圆锥滚子轴承座；4衬套；5承力锥壳(两个，5-1，5-2)；6轴承鼠笼(两个，6-1，6-2)；7风扇转子轴；8低压压气机配重盘；9轴承压盖(三个，9-1，9-2，9-3)；10支承板；11深沟球轴承座；12低压转子轴；13低压涡轮配重盘；14棍棒轴承座；15支承幅板(三个，15-1，15-2，15-3)；16支承机匣；17支架；18圆锥滚子轴承；19梅花联轴器(两个，19-1，19-2)；20齿轮机匣；21锁紧螺母(两个，21-1，21-2)；22深沟球轴承；23滚棒轴承；24膜片联轴器；25电机。In the figure: 1 expansion sleeve gland (three, 1-1, 1-2, 1-3); 2 fan counterweight plate; 3 tapered roller bearing seat; 4 bushing; 5 bearing cone shell (two , 5-1, 5-2); 6 bearing squirrel cage (two, 6-1, 6-2); 7 fan rotor shaft; 8 low pressure compressor counterweight plate; 9 bearing gland (three, 9- 1, 9-2, 9-3); 10 bearing plate; 11 deep groove ball bearing seat; 12 low-pressure rotor shaft; 13 low-pressure turbine counterweight plate; 14 stick bearing seat; 15 supporting web (three, 15-1 , 15-2, 15-3); 16 supporting casing; 17 bracket; 18 tapered roller bearing; 19 plum blossom coupling (two, 19-1, 19-2); 20 gear casing; 21 locking Nut (two, 21-1, 21-2); 22 deep groove ball bearings; 23 rolling rod bearings; 24 diaphragm couplings; 25 motors.
具体实施方式Detailed ways
结合附图对本实用新型的具体实施方式作进一步说明。The specific embodiment of the utility model will be further described in conjunction with the accompanying drawings.
一种齿轮传动风扇发动机低压转子系统模型试验器，该试验器按照各部分的功能可以划分为：动力部分、低压涡轮转子部分、支承部分、风扇转子部分和连接部分。The utility model relates to a model tester for a low-pressure rotor system of a gear transmission fan engine. The tester can be divided into a power part, a low-pressure turbine rotor part, a supporting part, a fan rotor part and a connection part according to the functions of each part.
所述的动力部分包括：电机25、齿轮机匣20。所述的电机25安装在桁架结构的支架17上，用于对低压涡轮转子部分提供动力，电机25轴线与支架17中轴线共线。所述的齿轮机匣20用于降低风扇配重盘2的转速，同时提高压气机及涡轮效率，通过螺栓安装在机匣支承16上，机匣支承16通过滑块能够在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。The power part includes: a motor 25 and a gear casing 20 . The motor 25 is installed on the bracket 17 of the truss structure, and is used to provide power to the low-pressure turbine rotor part, and the axis of the motor 25 is collinear with the central axis of the bracket 17 . Described gear casing 20 is used for reducing the rotating speed of fan counterweight plate 2, improves compressor and turbine efficiency simultaneously, is installed on casing support 16 by bolt, and casing support 16 can be on the mounting surface of support 17 by slide Move upward, and fix it with bolts after reaching the designated installation position.
所述的低压涡轮转子部分包括：低压转子轴12，低压涡轮配重盘13，低压压气机配重盘8，涨套压盖1-2、1-3。所述的低压转子轴12前端穿过低压涡轮配重盘13中心孔与膜片联轴器24连接，通过涨套压盖1-3限制低压涡轮配重盘13的轴向位移，所述膜片联轴器24与电机25连接。所述的低压转子轴12后端穿过低压压气机配重盘8的中心孔后与依次两个梅花联轴器19-2、19-1连接，且两个梅花联轴器19-1、19-2之间设有齿轮机匣20，通过涨套压盖1-2限制低压压气机配重盘8的轴向位移。所述的低压涡轮配重盘13以及低压压气机配重盘8的几何参数是实际的涡轮和压气机经过力学等效计算得来的。所述的低压涡轮转子部分包括两个支点A、B，其中A位于低压转子轴12的前端凸台部分，B位于低压转子轴12的后端凸台部分。The low-pressure turbine rotor part includes: a low-pressure rotor shaft 12, a low-pressure turbine weight plate 13, a low-pressure compressor weight plate 8, and expansion sleeve glands 1-2, 1-3. The front end of the low-pressure rotor shaft 12 passes through the central hole of the low-pressure turbine counterweight plate 13 and is connected to the diaphragm coupling 24, and the axial displacement of the low-pressure turbine counterweight disc 13 is limited by the expansion sleeve gland 1-3. The plate coupling 24 is connected with the motor 25 . The rear end of the low-pressure rotor shaft 12 passes through the center hole of the counterweight plate 8 of the low-pressure compressor and is connected with two plum blossom couplings 19-2, 19-1 in sequence, and the two plum blossom couplings 19-1, A gear casing 20 is arranged between 19-2, and the axial displacement of the counterweight plate 8 of the low-pressure compressor is limited by the expansion sleeve gland 1-2. The geometric parameters of the low-pressure turbine counterweight plate 13 and the low-pressure compressor counterweight disc 8 are obtained through mechanical equivalent calculation of the actual turbine and compressor. The low-pressure turbine rotor part includes two fulcrums A and B, wherein A is located at the front end boss portion of the low-pressure rotor shaft 12 , and B is located at the rear end boss portion of the low-pressure rotor shaft 12 .
所述的风扇转子部分包括：涨套压盖1-1、风扇配重盘2、风扇转子轴7。所述风扇转子轴7前端与梅花联轴器19-1连接，后端安装风扇配重盘2，通过涨套压盖1-1限制风扇配重盘2的轴向位移。所述的风扇转子部分包括一个支点C，C位于风扇转子轴7的后端凸台部分。The fan rotor part includes: an expansion sleeve gland 1-1, a fan counterweight plate 2, and a fan rotor shaft 7. The front end of the fan rotor shaft 7 is connected to the plum blossom coupling 19-1, and the fan counterweight plate 2 is installed at the rear end, and the axial displacement of the fan counterweight plate 2 is limited by the expansion sleeve gland 1-1. The fan rotor part includes a fulcrum C, and C is located at the rear end boss part of the fan rotor shaft 7 .
所述的支承部分包括三套轴承部件，分别位于三个支点A、B、C所在位置。所述支点A、C均采用弹性支承结构。在支点A处：滚棒轴承座14后部可动部分通过承力锥壳5-2连接在支承幅板15-3的轮毂上，支承幅板15-3可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定；在支点C处：圆锥滚子轴承座3后部可动部分通过承力锥壳5-1连接在支承幅板15-1的轮毂上，支承幅板15-1可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。该种支承结构可改变系统结构的动力特性，以降低振动水平。所述支点B处：位于试验器中部(低压转子轴12的后端凸台部分)，它的刚度对于整体的性能有很大的影响，故而采用刚性支承结构，深沟球轴承座11通过支承板10与支承幅板15-2的轮毂连接，支承幅板15-2可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。支承部分除A、B、C三个轴承部件外，还包括机匣支承16，齿轮机匣20通过螺栓安装在机匣支承16，机匣支承16可在支架17的安装面上移动，待到达指定安装位置后通过螺栓固定。The supporting part includes three sets of bearing components, which are respectively located at the positions of the three fulcrums A, B, and C. Both the fulcrums A and C adopt an elastic support structure. At fulcrum A: the movable part at the rear of the roller bearing seat 14 is connected to the hub of the support web 15-3 through the load-bearing cone shell 5-2, and the support web 15-3 can move on the mounting surface of the bracket 17 , to be fixed by bolts after reaching the designated installation position; at the fulcrum C: the movable part of the rear part of the tapered roller bearing seat 3 is connected to the hub of the support web 15-1 through the load-bearing cone shell 5-1, and the support web 15-1 can move on the mounting surface of the bracket 17, and be fixed by bolts after reaching the designated mounting position. This support structure can change the dynamic characteristics of the system structure to reduce the vibration level. The fulcrum B: located in the middle of the tester (the rear end boss part of the low-pressure rotor shaft 12), its stiffness has a great influence on the overall performance, so a rigid support structure is adopted, and the deep groove ball bearing seat 11 is supported by The plate 10 is connected with the hub of the supporting web 15-2, and the supporting web 15-2 can move on the installation surface of the support 17, and is fixed by bolts after reaching the designated installation position. In addition to the three bearing parts A, B, and C, the support part also includes a casing support 16. The gear casing 20 is installed on the casing support 16 through bolts. The casing support 16 can move on the mounting surface of the bracket 17. After specifying the installation position, it is fixed by bolts.
所述的连接部分包括：梅花联轴器19(两个,19-1,19-2)，膜片联轴器24，以及各个螺栓。膜片联轴器24将电机25的输出端与低压转子轴12的输入端相连，梅花联轴器19-2将低压转子轴12的输出端与齿轮机匣20的输入端相连，梅花联轴器19-1将齿轮机匣20的输出端与风扇转子轴7的输入端相连。The connecting part includes: plum blossom coupling 19 (two, 19-1, 19-2), diaphragm coupling 24, and various bolts. The diaphragm coupling 24 connects the output end of the motor 25 with the input end of the low-pressure rotor shaft 12, and the plum blossom coupling 19-2 connects the output end of the low-pressure rotor shaft 12 with the input end of the gear case 20, and the plum blossom coupling A device 19-1 connects the output end of the gear casing 20 with the input end of the fan rotor shaft 7.
本实用新型所有回转零件轴线共线，扭矩由电机25输入分别经由低压转子轴12、低压涡轮配重盘13、低压压气机配重盘8和齿轮机匣20，最终流向风扇配重盘2。The axes of all the rotary parts of the utility model are collinear, and the torque is input by the motor 25 through the low-pressure rotor shaft 12, the low-pressure turbine counterweight plate 13, the low-pressure compressor counterweight disc 8 and the gear casing 20, and finally flows to the fan counterweight disc 2.
试验之前先将电机25用螺栓固定在支架17上，支架上的螺栓孔在加工时保证形位要求，使得电机25轴线与支架17中轴线共线。再依次布置轴承部件A、B、C、机匣支承16，这时不要用螺栓将其固定，以便在安装联轴器时水平调整轴承部件A、B、C与机匣支承16的位置。而后依次放置低压转子轴12、低压涡轮配重盘13、低压压气机配重盘8、齿轮机匣20、风扇转子轴7及风扇配重盘2。接着从电机25输出轴开始，用联轴器将各个组件连接，若有需要可在支架导轨上水平移动轴承部件A、B、C和支承机匣14，而后用螺栓固定。最后连接电机25与ABB变频器的电路，并布置传感器准备测试。Before the test, the motor 25 was fixed on the support 17 with bolts, and the bolt holes on the support ensured the shape and position requirements during processing, so that the axis of the motor 25 was collinear with the central axis of the support 17. Arrange the bearing components A, B, C, and the casing support 16 in sequence. Do not fix them with bolts at this time, so as to horizontally adjust the positions of the bearing components A, B, C and the casing support 16 when installing the coupling. Then place the low-pressure rotor shaft 12, the low-pressure turbine counterweight plate 13, the low-pressure compressor counterweight disc 8, the gear casing 20, the fan rotor shaft 7 and the fan counterweight disc 2 in sequence. Then start from the output shaft of the motor 25, and each assembly is connected with a shaft coupling, and if necessary, the bearing parts A, B, C and the support casing 14 can be moved horizontally on the support guide rail, and then fixed with bolts. Finally, connect the electric motor 25 and the circuit of the ABB frequency converter, and arrange the sensor to prepare for testing.
静态特性测试：Static feature test:
在齿轮传动风扇发动机低压转子系统模型试验器开机之前，进行锤击试验，以加速度传感器测量所需研究对象(如低压涡轮配重盘13、风扇配重盘2、低压压气机配重盘8等)的三向静态固有特性。Before the geared fan engine low-pressure rotor system model tester is turned on, a hammer test is carried out to measure the required research objects (such as low-pressure turbine weight plate 13, fan weight plate 2, low-pressure compressor weight plate 8, etc.) ) three-way static inherent property.
动态特性测试Dynamic characteristic test
打开电源进行试车，由ABB变频器控制电机25的转速，测试该转子系统在加速减速过程中，尤其是在临界转速附近的振动响应；也可测试恒定转速下的振动响应。Turn on the power for a test run, and the ABB inverter controls the speed of the motor 25 to test the vibration response of the rotor system during acceleration and deceleration, especially near the critical speed; the vibration response at a constant speed can also be tested.
在运转过程中测试齿轮啮合作用下的低压转子系统动力学响应，并与理论模型进行比对，验证模型的正确性。The dynamic response of the low-pressure rotor system under the gear meshing action is tested during operation, and compared with the theoretical model to verify the correctness of the model.
在支承幅板15以及轴承(深沟球轴承22，滚棒轴承23)上施加单点正弦激励、单点随机激励测试轴承部件的动态响应，并与设计参数对比，评估轴承部件的减振性能。Apply single-point sinusoidal excitation and single-point random excitation on the support web 15 and bearings (deep groove ball bearing 22, roller bearing 23) to test the dynamic response of the bearing components, and compare with the design parameters to evaluate the vibration damping performance of the bearing components .
故障模拟：Fault simulation:
a.不对中故障：通过在支承幅板15与支架17的接触位置加垫片可模拟不对中现象。a. Misalignment fault: Misalignment can be simulated by adding gaskets at the contact position between the support web 15 and the bracket 17 .
b.不平衡故障：通过在风扇配重盘2、低压涡轮配重盘13加不平衡配重，可以用来模拟多种不平衡情况。b. Unbalance fault: By adding unbalanced weights to the fan weight plate 2 and the low-pressure turbine weight plate 13, it can be used to simulate various unbalanced situations.
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| CN110006659B (en) * | 2019-04-15 | 2023-12-29 | 大连理工大学 | Gear drive fan engine low pressure rotor system model test ware |
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