1、0动力分散式内燃动车组的降噪材料中英文解析Analytical dynamic distributed combustion bullet train noise reduction materials 内燃动车组车内噪声与温度控制是评定车辆舒适度的一个重要因素，动力包部分产生的噪声是动力分散内燃动车组噪声的主要来源，本论文通过对车内噪音的产生进行分析并提出降噪措施，结合车辆防寒材的安装方法与工艺，对车辆安装使用的新材料与新工艺应用进行研究，达到整个车辆内部特别是动力包部分隔音降噪隔热的要求。Combustion emu interior noise and temperature contr
2、ol is one of the evaluation of vehicle comfort factor, power pack part of noise power is dispersed internal combustion emus main source of noise, this paper analysis on in-car noise and noise control measures are put forward, combining protection material installation method and technology in vehicl
3、e, the vehicle installation using the new material and new technology application research, to the entire vehicle internal part especially the power pack heat insulation sound insulation noise reduction requirements. 关键词：动力分散式内燃动车组 动力包 隔音降噪 隔热Key words: power distributed diesel motor train-set power
4、 pack heat insulation sound insulation noise reduction 随着铁路事业的高速发展，轨道车辆已成为人们出行不可或缺的交通工具，内燃动车组作为一种现代化轨道交通工具，在交通运输中发挥着巨大的作用，然而轨道交通车辆在运行过程中不可避免地会产生噪声，车辆内部的噪声会直接影响着乘客乘坐的舒适性，噪声达到一定的强度会对工作人员、乘客等造成损害；动力包运转会产生大量的热量，车外车内温度差会造成车内外的热传递，如果不能采取有效措施，增加车内空调采暖系统的压力。本论文主要阐述了动力分散式内燃动车组的噪声与隔热处理特别是动力包处与客室地板之间的一种隔声降噪隔热措
5、施的研究。With the rapid development of railway, railway vehicles travel has become people indispensable traffic tools, internal combustion emu as a modern rail transport to play a huge role in the transportation, but inevitably during the process of rail transit vehicles in operation will produce noise,
6、 vehicle interior noise will directly affect the passengers ride comfort, the intensity of the noise reached a certain harms the crew, passengers, etc.; Power pack operation will generate a lot of heat, car will cause the car inside and outside temperature difference of heat transfer inside the http
7、:/ http:/ if you cant take effective measures to increase the air-conditioning heating system pressure. This thesis mainly expounds the bullet train noise and heat treatment, especially the dynamic distributed diesel power pack place and passenger compartment floor between a heat insulation sound in
8、sulation noise reduction measures. 1、动力分散内燃动车组介绍1, the scattered power internal combustion emu is introduced 动力分散式内燃动车组 DMU 是由柴油引擎驱动的动力分散式铁路车辆，采用独立的柴油内燃机作为驱动机或者发电机，是区别电气型动力分散型动车组的主要特征。其主要特点如下：（1）低成本。相对于电气化机车，它不需要电气化线路、接触网、电力所的建设与维修，使其具有低建设费、低维修费、低电力费的特点。 （2）高载客量。内燃机在车底布置，不需要专门的牵引机车，司机室占用空间小，客容量大。 （3
9、）运行要求低。因其独立的驱动系统，使其可以在非电气化路线运行，并可与电力机车混跑。 （4）编组灵活。可以一辆动车单独运行，多辆动车拖车混合编组等形式。另外由于不需单独配置牵引机车，此种动车组还有容易编制运营计划等多种特点，因此在我国的支线铁路、城际铁路、非电化区和电化区混跑的线路有很好的应用前景在国际类似轨道交通线路上也有很大的市场潜力。Dynamic distributed combustion emu DMU is driven by a diesel engine power distributed railway vehicle, driven by independent diese
10、l internal combustion engines as machine or generator, is the difference between dispersed type electric power the main characteristics of the emu. Its main features are as follows: (1) low cost. Relative to the electric locomotive, it does not require electrification lines, construction and mainten
11、ance of catenary and power, make its have the characteristics of low construction cost, low maintenance, low DianLiFei. (2) high capacity. Internal combustion engine in the car arrangement, dont need special traction locomotive, driver room small footprint, large capacity. (3) low operating requirem
12、ents. Because of its independent driving system, which can run in the electrified line, and can be blended with electric locomotive running. (4) organization flexibility. Can a train run separately, many moving car trailer mixed into forms. Also dont need to be configured separately by traction loco
13、motive, the emu and easy preparation of operation plan, and other characteristics, so in our country regional railway, intercity railway, the electrochemical and electrochemical mixed running line has a good application prospect in the international similar rail communication way also has a large ma
14、rket http:/ http:/ 2、内燃动车组噪声分析2, the internal combustion emu noise analysis （1）轮轨噪声。钢轨与轮轨之间相互作用而产生的声响。轮轨噪声有 3 种主要类型：摩擦噪声、撞击噪声和轰鸣噪声（或滚动噪声） ，每一种均由相对应的机械结构所产生。（2）牵引动力系统噪声。牵引系统设备运转所产生的噪声，包括动力包柴油机运行噪声、牵引电机及其冷却系统、齿轮箱的噪声以及空气压缩机运行噪声，它是轨道交通主要的噪声。 （3）辅助设备噪声。主要是指空调机组等辅助设备运转噪声，机组在运行过程中产生振动以及通风系统气流不稳定产生的空气动力噪声。此
15、外列车上各个突出和凹入的部分，在空气中高速移动时，压力空气在非恒定的气流中发生变化，从而产生的空气动力噪声以及各种外部噪声等。(1) the wheel/rail noise. Arising from the interaction between rail and wheel/rail noise. Wheel/rail noise there are three main types: friction noise, impact and rumbling noise (or rolling noise), each one produced by the corresponding m
16、echanical structure. (2) the traction system noise. Traction equipment running noise generated by the system, including power package running noise, traction motor and diesel engine cooling system, the noise of the gear box and air compressor noise, it is a major noise of rail transit. (3) the noise
17、 of auxiliary equipment. Mainly refers to the air conditioning units and other auxiliary equipment running noise and vibration units in the process of running and unsteady aerodynamic noise generated in the ventilation system air. Also train all outstanding and recessed part, high-speed mobile is in
18、 the air, the air pressure change in the unsteady airflow, the aerodynamic noise generating and a variety of external noise, etc. 3、车辆的降噪与隔热措施3, vehicle noise reduction and heat insulation measures 由于车辆的热传递和噪声类似都是通过车体进行，因此车辆的隔热与隔音措施在设计时进行有机结合，使两种措施相辅相成，既保证所需效果，对成本也有所控制。Noise due to the vehicles heat
19、 transfer and similar are to be carried out through the body, so the vehicles heat insulation and sound insulation measures in the design, make two kinds of measures to complement each other, not only ensure the effect, some control of costs. （1）对于轮轨噪声可通过采用改进车轮材质降低轮轨间动态作用力及振动水平，降低车辆的结构辐射噪声。采用刚度大、阻尼系
20、数高的钢轨垫片、增加钢轨阻尼、增加钢轨吸http:/ http:/ for wheel/rail noise by using improved materials reduce the wheel/rail dynamic forces between wheels and vibration level, reducing the vehicles structure radiated noise. Using large damping coefficient and high stiffness of rail gasket, increasing damping, rail, and
21、 rail vibration absorber which is used to embedded type rail and rail section shape optimization (such as the short rail, narrow gauge feet) and other measures to reduce the vibration level of rail, reducing rail noise radiation. By reducing the wheel/rail contact surface roughness to reduce wheel/r
22、ail noise rumble. （2）对于空调机组噪声，可将机组安装在减震座上，在车内空调部位平顶板处粘贴隔音减震材料等降低此类噪声的影响。Noise, (2) for the air conditioning unit can be installed on the suspension bridge, in the car air conditioner parts in flat plate paste insulation damping material to reduce the effects of such noise. （3）对于空气动力噪声，采用流体力学机械设计，应用风
23、动模拟实验，采用流线型车体设计，减少气流产生的各种噪声。(3) for the aerodynamic noise, the use of fluid mechanics, mechanical design, the application of pneumatic simulation experiments, using streamlined body design, reduce all kinds of noise produced by the airflow. （4）车辆通过全车加装防寒材来增加车辆的隔热保温效果，如图 1 所示，车顶与侧墙防寒材用防寒压板固定，车窗、车门四周加
24、塞防寒材，保证结实，严密。防寒材为用阻燃塑料布包裹严密的聚酯纤维棉，外表面粘贴铝箔，聚酯纤维棉的导热率为0.034W/mC，氧指数：40.7A 级，降噪系数： NRC=0.76，起到了良好的保温降噪作用。(4) vehicles through the whole vehicle equipped with protective material to increase the heat insulation effect, as shown in figure 1, the roof and side wall protective material with thermal pressur
25、e plate is fixed, the Windows and doors around the gasser protective materials, to ensure strong, tight. Thermal material for flame retardant plastic sheeting wrapped tight polyester fiber cotton, the surface paste foil, polyester cotton thermal conductivity is 0.034 W/m or less C, oxygen index: 40.
26、7 A, the noise reduction coefficient, the NRC = 0.76, had good thermal noise reduction effect. （5）车体内部设计时，在车顶、侧墙、底架相应位置喷涂 1-4mm 厚阻尼浆，减少车体震动以及从车体传入车内的噪声；在地板结构上面采用浮筑地板结构来有效的控制传递http:/ http:/ 1000-5000Hz 时32dBA （平均） ，隔热性能 K4.6W/.K ，车门关闭时能有效地隔热、隔声，能消除震动；车窗采用中空双层隔热玻璃，车窗与车体间安装橡胶条密封；另外通过优化设计，减少到车内过线、过管孔的数量
27、并对其进行密封等措施都能起到隔音隔热效果。论文网(5) the bodywork interior design, in the spraying of the roof, side wall, chassis 1-4 mm thick damping slurry, reduce the car-body vibration and noise from car to car; Structure is built using floating above the floor on the floor structure to effectively control is passed to
28、 the interior structure of the noise, the noise according to the structure features at the same time, adopt effective sound insulation sound-absorbing material to increase the spread of the noise damping; Door USES electric double plug door open, this kind of plug doors with good sealing, door parti
29、tion volume 1000-5000 hz or 32 dba (on average), heat insulation K 4.6 W / . K, when closing the doors effective heat insulation, sound insulation, can eliminate vibration; Windows USES the hollow double insulated glass, window and install rubber seal between body; Also through optimization design,
30、reduced to the number of the car crossed the line, tube hole and sealing and other measures can have noise insulation effect. Net of paper of 4、底架处的降噪隔热措施4, chassis, the noise reduction thermal insulation measures 由分析得知，车内噪声主要来源与车下，尤其是动车组的动车动力包处，因此地板处的降噪隔热措施就显得尤为重要，地板安装采用橡胶堆组成作为弹性支撑，上安装垫梁后安装铝蜂窝地板。动力
31、包运行会产生严重的噪声与大量的热量，此处的隔热与隔音降噪措施同时设计，使用新材料与新工艺，使两者有机结合，两种措施相辅相成，达到需要效果。Informed by analysis, the main sources of interior noise and the car, especially the emu train dynamic packages, so the floor of the noise reduction thermal insulation measures is particularly important, the floor installation usin
32、g rubber of pile as an elastic support, the installation of aluminum honeycomb floor mat beam after installation. Power pack run will produce serious noise and a lot of heat, heat insulation and sound insulation noise reduction measures at the same time design here, using new materials and new techn
33、ology, make both organic combination, two http:/ http:/ complement each other, need. （1）使用 1mmVNVinaflex 隔声垫，这款材料能有效的将车底各种噪声隔绝，产品性能实验其隔声量达 21.5dB，另外它也是防火达到 S4 标准的隔声材料。(1) using 1 mmvnvinaflex sound insulation pads, this kind of material can effectively insulate car all kinds of noise, product perfor
34、mance testing its sound insulation quantity of 21.5 dB, and it is also fire reach S4 standard sound insulation materials. （2）在地板与 Vinaflex 之间用 2mm 的三聚氰胺，可以使 Vinaflex 发挥更好的性能。(2) between the floor and Vinaflex with 2 mm melamine, can make Vinaflex play better performance. （3）地板支撑之间填充 CARBONWOOL 聚酯纤维，
35、除了保温之外还可以起到吸声的作用。(3) floor support between filling CARBONWOOL polyester fiber, in addition to the heat preservation can also have the effect of sound absorption. （4）为进一步降噪，在地板处使用 25mmArmasound240，这样的结构能进一步提高隔声量。(4) for further noise reduction, on the floor use 25 mmarmasound240, this structure can f
36、urther improve the sound insulation quantity. （5）对于个别空腔位置，无法填充防寒材料，可采用 CP620 膨胀型防火泡沫以解决漏声现象，其隔声量（DIN4109）可达 59dB，且具有良好的保温性能。(5) for the specific position of the cavity, cannot fill warm materials, CP620 expansion type fire retardant foam can be used to solve acoustic leakage phenomenon, its sound in
37、sulation quantity (DIN4109) of 59 db, and has good heat preservation performance. 通过对车体与车内布置各部件的降噪隔热研究，采用新技术、新工艺、新设备、新材料进行统筹设计。上述车体的隔热隔声解决方法，在理论方面和实验中都能满足了客室内部保温与降噪要求，此种方案在我公司孟加拉内燃动车组项目生产过程中进行实际应用，经实测列车以 50km/h 正常运行时，车内中心离地板高 1.5m 处的噪声75dB（A） ，并具有良好的隔热保温效果，满足客户采购要求。Through to the car body and car ar
38、rangement noise insulation of components of research, to adopt new technologies, new processes, new equipment, new materials to design as a whole. The body heat insulation sound insulation solutions, in the aspect of theory and experiment can meet the http:/ http:/ of passenger compartment internal
39、insulation and noise reduction, this solution Bangladesh combustion the emu project in my company for practical application in production, checked by actual measured at 50 km/h train running, the car center at 1.5 m high from floor noise of 75 db (A) or less, and has good heat preservation effect, satisfy the customers purchasing requirements.
