<正>(1)测温度可用手指触摸液压元件,以判断其发热温升情况。若感觉较凉,元件温度约为5～10℃;感觉不凉也不热,温度约为15～20℃;感觉暖而不烫,温度约为20～30℃;感觉热而烫但能忍受,温度约为40～50℃;感觉只能忍耐2～3 s的时间,温度约为50

<正>(1)水路不畅冷却系内的水垢过多会使柴油机散热不良,导致温度过高。水泵、风扇离合器性能下降或损坏,也会导致温度过高。此时需检查冷却液的流速,如果流速正常,说明是水垢过多,清洗水套或更换水散热器即可。如果流速过慢,则需对水泵或风扇离合器进行检查。

<正>寒冷季节启动柴油机,有时会出现水泵轴断损情况。其原因一是水泵轴本身存在质量问题;二是人为因素所致。水泵轴本身质量问题,换件即可;人为因素多发生在秋冬之交季节,工程机械作业后若没有及时放出柴油机内的冷却水,在水泵叶轮及密封圈(环)

<正>故障现象:一辆别克君威轿车,油改气后在运行中驾驶室内有汽油味,且油耗较高,故障指示灯点亮。检测情况:用Tech2提取故障码,仪器显示有3个故障码,分别为:"P0131-加热氧传感器电路电压过

An adhesive material was developed in which E-44,a widely used epoxy resin was used as matrix,and silicon nitride,boron nitride,aluminum oxide and silicon carbide were used as thermal-conducting insulating fillers.The thermal conductivity was adjusted by adding various amounts and types of materials mentioned above and the viscosity and toughness were modulated with the addition of various amounts of plasticizers and accelerators.The relations among the adhesive viscosity,heat conductivity and compounding formula were studied.One kind of compound with relatively good comprehensive properties and suitable for process production was obtained.When the amounts of silicon nitride,aluminum oxide and boron nitride in the fillers were respectively 25%,25% and 10% of the mass of epoxy resin matrix,the thermal conductivity of this system is high at 2.66 W/m K and will be 11.6 times of that of pure epoxy resin matrix.

<正>一位客户新购买的途安2.0汽车,因暖风不热来我公司检查。服务顾问接车后首先进行试验,发现该车的暖风果然不热,且水温表指示的温

According to the view of hydro-dynamic reliability,the safety of hydro-power for the boiler running under the condition of low-load in the power plant is investigated and analyzed in this paper.The research results reveal that when the load of the boiler is more than 50%, the operation of the water circulation is safe;when the load is 40%,the water circulation is safe,but at the same time the velocity of the water circulation displays some fluctuation;30% load is not suitable for the boiler to keep a stable long-term running of water circulation;when the load is only 20% or under,the water circulation of the boiler is not safe,it should be avoided.

A transient heat transfer model of the soil temperature field around a vertical U-tube of ground source heat pump was established.The numerical simulation was obtained by using the implied finite difference method.By making the simulation of cooling and heating mode,the change rules of the soil temperature with the radial direction,the change rules of the exit water temperature of the buried pipe and the thermal influencing radius in the vertical multi-pipe were obtained.

文章介绍了松花江佳同线火沿炉浅滩河段基本情况,整治目的、标准及措施,整治工程效果.