The operation efficiency for the improved device shows that the service life is 2 times of unimproved exchanger with a high operating stability 改造后的运行效果表明,纵向翅片管式换热器的使用寿命是改造前的2倍,且运行平稳。
The resolution of the problems in the de - ironing operation of valveless filters enables them to meet the designed capacity , improves their operating stability , and heighten the pass rate of their water quality to or over 98 % 摘要改进无阀滤池在除铁工艺运行过程中存在的问题,使出水量达到设计能力,运行稳定性提高。
Through analyzing the data measured from prototype units and model test and simulation results , some appraise are given on the units operation condition and some advice are made to improve the operating stability 模型试验数据以及与计算机仿真计算结果的分析,合理评价机组的运行状态,并对改善机组运行稳定性提出一定的改进方案
In this paper , two factors that will threaten the operating stability were studied , which are sand abrasion and cracking of the blades . and other problems that affect the safety in production were discussed 本文对影响小浪底电站稳定运行的泥沙磨损问题和转轮裂纹问题进行了详细的分析,并对其它影响机组稳定运行的现象进行了研究。
Because of the special water quality , sand abrasion is a severe menace to the operate stability of the units in xiaolangdi hydropower plant . in addition , some problem occurred during the operation of the units . among them , cracking of the blades is very severe 另外,小浪底电站水轮发电机组在运行的期间出现了一些异常现象,其中转轮裂纹问题比较严重,对小浪底电站的稳定运行产生了很大的影响。
A method based on the application of an injection process analysis software is introduced in this article , which optimize injection process through changing the design of fuel - injection pump cam . a model of 1115 single cylinder direct injection diesel engine is used as an example . with the help of pre - journey optimization , increasing cam lift and using tangent - function can make the matching of the injection system with the diesel more reasonable . without changing fuel pump installing size , it can enhance injection rate and injection pressure and improve the diesel operating stability in low speed condition 本文以国产1115型单缸直喷柴油机为例,介绍一种应用喷油过程分析软件改进喷油泵凸轮设计的方法,通过增大喷油泵凸轮升程、采用切线函数凸轮并优化预行程的方式,在不改变喷油泵安装尺寸的前提下,可提高喷油压力和喷油速率,改善柴油机低速工作稳定性,使喷油系统与柴油机匹配更合理。
The two - dimensional axisymmetric subsonic - transonic - supersonic flow in an experimental arcjet thruster is simulated numerically using flux vector splitting method . the profiles of density , velocity , temperature , pressure and mach number can be obtained by the computation . the computation grid and some computed results are given here . the test equipment such as power supply system , ignition system , propellant supply system , arcjet thruster , thrust measuring device and vacuum system are introduced briefly . some working phenomena of the arcjet are observed and discussed . three different kinds of instability appeared in the process of the experiments . except some important parameters are measured , it is found that the operating stability of argon is better than that of nitrogen 对一实验电弧加热式发动机二维轴对称亚跨超音速流动进行了数值模拟,所采用的方法是矢通量分裂算法.通过计算可以得出密度、速度、温度、压力和马赫数的分布.给出了计算所使用的网格和一些计算结果.简要介绍了实验所使用的设备,如电源系统、点火系统、推进剂供给系统、电弧加热式发动机、推力测量装置和真空系统.对所观察到的一些工作现象进行了讨论.有三种不同的不稳定性出现于实验过程.除了所测量的一些重要参数,通过实验发现氩比氮工作更稳定
The suspension system on a automobile will effect the operating stability , the comfort , the turning ability , the life of its tire etc . the double - wishbone suspension is one of the independent suspensions applied broadly . the double - wishbone suspension is complex space mechanism with many loops and complicated movement 汽车悬架系统将直接影响汽车使用性能特别是操作稳定性、舒适性、转向轻便性和轮胎的使用寿命等方面的性能,双横臂独立悬架是目前汽车中使用最广泛的独立悬架之一。