给水加热器

Some problems can be solved, such as the deposition of boiler, the loss of cauterization,and the fast augment of the pressure-reduction of the direct current crucible and heater.Therefore, the boiler need not be washed frequently. the run-periodicity of purifyinstrument of coagulator was prolonged, and the service pipe was improved greatly.

采用OT处理后，锅内沉积物量减少、腐蚀损坏降低、直流炉炉管和加热器压降快速升高问题得到了解决、锅炉清洗频率降低、凝结水净化装置运行周期延长、给水管道FAC大有改善等。

The effective means for increasing the efficiency of power plant is to connect the extraction feedwater system with drainage pump. But the running conditions of drainage pump is bad, because the working substance in drainage pump is generally low pressure heater drainage which is of features such as high back pressure and suction temperature.

采用疏水泵连接的给水回热系统是提高电厂效率的有效措施，但由于低压加热器疏水具有吸入压力和吸入温度比较高的特点，从而造成疏水泵的工作条件较差。

This paper deals with how to use optimum method to make economical comparisons of the following heating systems: the hot water boiler, heat exchanger system, steam jet system and shower calorifier system, which are widely used in industrial boiler house.On condition that the nature of the untreated waters, rate of condensation recovery, fuel costs, heating days, and temperature drop of flow and return water are different, a lot of analysis and comparisons have been made in this paper and optimal designs for...

本文论述了对工业企业锅炉房内几种常用热水制备系统(热水锅炉、换热器系统、蒸汽喷射系统和喷淋加热系统)如何应用最优化方法进行经济比较的问题；并且对其在不同给水水质、燃料价格、采暖天数、凝结水回收率以及不同的送、回水温差等条件下，作了大量分析和比较，从而为计算者推荐出不同条件下的最优方案。

It uses middle extracted steam from steam turbine to heat the feetwater of boiler to the saturate temperature under working pressure of deaerator, so as to remove dissolved oxygen and other gases. To prevent or slow boiler and steam turbine as well as pipeline from corroding, and extend them service life, to ensure the operation of the power plant under safety economic condition. The high-pressure deaeator of 235t/h is a kind of mixture-type heater, which shall match with 55 MW units, whose deaerated head adopts a kind of new-style stuffing way with rotation film.

它是利用汽轮机的中间抽汽将锅炉给水加热到除氧器工作压力下的饱和温度，以达到除去给水中的溶解氧和其它气体，防止或减缓锅炉、汽机及其管道的腐蚀，延长其使用寿命，确保电厂的安全经济运行。235t/h高压除氧器是配55MW机组的混合式加热器。

Through the retrofit for multi-frequency regulation, shaft seal ing water system,rotator material and shaft cover orientation mode of 150 NW-78×2 low pressureheater drain pump,pump corrosion at low-load operation,bad packing seal,bearing vibration,bearing burned have been solved.

通过对150 NW 78×2型低压加热器疏水泵进行变频调节改造，对轴端密封水系统、转子部件材质和轴套锁母定位形式进行了改进，消除了给水溶氧超标、轴承振动超标和轴承烧毁等缺陷，提高了泵组健康运行水平。

The general use of closed high-pressure water safety valve, such as the high pressure feed water heater, heat exchanger.

高压给水一般用封闭全启式安全阀，如高压给水加热器、换热器等。

High pressure supply water heater uses discharge steam from steam turbine to heat supply water of boiler, and makes supply water to reach required temperature so as to improve thermal efficiency of power plant and to ensure output of the unit.

高压给水加热器是利用来自汽轮机的抽汽，来加热锅炉给水，使给水达到所要求的温度，从而提高电厂的热效率和保证机组的出力。

13 Safety valve should also be installed to the steam side of the heater to avoid the excessive pressure caused by the pipe rupture. 10% of peak load water flow should be passed, or the discharge flow of one pipe and two ruptures should be passed. The maximum of the two should be selected and sufficient

5.1.13加热器汽侧也应设置安全阀，防止由于管子破裂而造成超压，其最小容量应能通过最大负荷给水流量的10%或一根管与两个断口排放的流量，两者取最大值并留有足够的安全裕量。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。