Based on the experiment, we describe the multilevel pipe pressure loading method that can simulate the high back pressure of pump and has low noise property. 在试验研究的基础上,论述了多级节流增压模拟水泵实际运行背压的低噪声特性。
With the development of machine's high speed, over loading, lower noise, the bevel wheel is applied more and more at large. 随着机器向高速、重载、低噪音方向的发展,斜齿轮的应用越来越普遍。
Unsteady loading noise of counter-rotating propeller 反旋桨扇非定常负荷噪声的研究
Spiral bevel gears are widely used in mechanical products as these kinds of gears have quite many merits such as the big overlap ratio, the high loading capacity, the stability of transmitting, the small sensitivity toward setting error, the small noise, and so on. 由于弧齿锥齿轮具有重合度大、承载能力高、传动平稳、对安装误差的敏感性小以及噪音小等优点,被广泛应用于机械产品中。
Study of Marine Propeller Loading Noise 螺旋桨负荷噪声研究
The algorithm can reconstruct the whole loading process chronologically, and has high calculating accuracy and high random noise resistibility, thus ensuring higher precision for load spectrum analysis. 该算法按时间顺序再现了载荷发生的全部过程,计算精度高,抗随机噪声干扰能力强,使得对载荷谱的分析更加准确。
This paper introduces the electromagnetic compatibility design in the developing of automatic loading chest machine and presents some practical measure of electromagnetic noise elimination about signal transmission, line construction and assembly. 介绍全自动装箱机研制中的电磁兼容性设计和对信号传递、线路结构、组装配置等诸方面的电磁噪声抑制的一些实用措施。
The unsteady Loading noise generated by interaction of a front rotor wake with an aft rotor in a counter-rotating ( CR) propeller is analyzed and the noise radiation formulae are derived. 本文着重研究了反旋桨扇前排转子尾流与后排转子干涉形成的非定常负荷噪声,并与试验结果作了对比。
Abstract: Applying the wavenumber frequency transfer function to describe the whole system including the elastic cylindrical shell and the fluid loading, a general expression of the cross spectrum of the interior noise induced by the TBL ( Turbulent Boundary Layer) pressure fluctuations is derived. 用波数-频率谱传递函数描述包括粘弹性圆柱壳和流体负荷在内的整个系统,导出了TBL(湍流边界层)压力起伏激励下管内噪声场互谱函数的一般表示式。
Installing fans and adjusting their voltage and speed to cool the transformer is favorable to improve the loading ability of the transformer with energy saving and low running noise. 另外,采用调压调速方式对变压器进行冷却降温,有利于提高变压器的带负荷能力,实现节能、低噪声运行。
A growing harsh desire is essential in the research and design of the advanced turbomachinery which possesses the characteristics of high loading, high efficiency and low noise and so on. 现代叶轮机械朝着高负荷、高效能、低噪音等方向发展,这种趋势对其研究和设计提出了日益苛刻的要求。
With the development to high-speed 、 over loading 、 precision 、 high potency and low noise in gear drive, the department of manufacturing and processing demands a higher technological content from the design and strength of gear. 随着齿轮传动向着高速、重载、精密、高效、低噪声方向发展,制造业对齿轮的设计和强度提出了更高的要求。
Unexpected deflections can cause severe edge loading that is detrimental to gear surface life as well as noise performance. 意外的轴变形将造成严重的边缘载荷,将减少齿轮寿命,并产生噪音。
By the method developed, both rotor thickness and loading noise are computed. The influence of different design parameters on the rotational noise, such as rotor speed, blade number and rotor diameter, are also investigated. 应用所建立的方法,分别进行了旋翼厚度和载荷噪声的计算,并对旋翼转速、桨叶片数、旋翼直径等不同设计参数对旋转噪声的影响进行了研究,得到了一些有实际意义的结果。