锅炉管

The welded pipe products is partitioned into five arrangements as per its characteristics and its six developing directions toward thin wall thickness,thick wall thickness,high accuracy,high grade,inside burr removal and anti-corrosion,etc.are analyzed.

我国中小直径焊管经过20世纪80~90年代的飞速发展，品种结构和应用领域已经有较大的改善，但是低压流体输送管、一般结构管比例较大，与焊管发达国家在锅炉、化工、油井、机械构件、高压流体输送用承压钢管和精密钢管领域不断扩大焊管的使用范围、提高高等级焊管使用数量方面存在一定的差距。

Tube bursting of superheater or reheater is often happened in large capacity power plants, which severely threatens safety of boiler.

大型电站锅炉过热器、再热器的超温爆管现象是锅炉运行中最常见的事故之一，严重影响到锅炉的安全经济运行。

By using finite element analysis software ANSYS,the 3-D model of real structure of waste heat boiler was built when the effect of tubesheet interacted with cylinder and tube was taken into account.Based on the mechanical stress analysis,the deformation of the tubesheet and the stress distribution diagram were obtained.

运用有限元分析软件ANSYS，对废热锅炉建立了考虑筒体和换热管影响的管板真正实际结构的三维模型，对其进行机械应力分析，得出管板的变形和应力分布云图。

Although the TSOT heat exchanger has been successfully applied in the realm of heat-recovery in industrial boilers and furnaces, the mechanisms of TSOT and its effects of some elements on its heat transfer features are unknown. Reports about the TSOT research have seldom seen. So it is not only urgent but also important to do some investigations on TOST to enrich the heat pipe theory and guide engineering design.

由侧端切向开漩流孔的半开式热虹吸管制成的热管换热器已在工业锅炉、窑炉中初步得到成功应用，但对其内部的机理和有关影响因素尚不十分清楚，在国内、国外文献资料中对该种热管的相关研究资料的报道也较少，因此，迫切需要进行相应的研究，以丰富热管理论并指导工程设计。

Current, country is right medium or small boiler control, it is to rely on to pass board type or boiler water level of surveillance of fluviograph tubal form artificially mostly, rely on to add water artificially, the labor strength that operates personnel is greater, go against safeguard boiler safety to move.

目前，国内对中小型锅炉控制，大多是靠人工通过板式或管式水位计监视锅炉水位，靠人工加水，操作人员的劳动强度较大，不利于保障锅炉安全运行。

As a result, the conclusion on boiler tube failures mod...

取得以下研究成果：(1)对受热面管的主要失效模式进行了分类，针对工业锅炉和电站锅炉的不同特点，系统地研究总结各种失效的机理，为建立受热面管的失效预防措施提供了理论指导。

Based on the present domestic and international actualities, this paper makes in-depth experiments for the technology of boiler tube leak detection and diagnosis, and develops the system of the boiler tube leak detection and diagnosis.

本文在充分研究了国内外现状的前提下，对锅炉炉管泄漏检测与诊断技术进行了深入的理论与实验研究，开发了锅炉炉管泄漏检测与诊断系统，研究的主要内容包括以下几个方面。

The feedwater quality was examined and the corrosion mechanism of the boiler tube under present condition was probed into.

结果表明，由于水质原因导致炉管腐蚀以及锅炉在短时间内处于强过热状态，是造成锅炉炉管损坏的原因。

This article summarizes the successful experiences in technology innovation of refinery equipment and reports improvement of construction method in innovation and its effect. The innovationincludes improvement of thermal insulation structure for coke tower, application of fiber sprayingtechnology for lining of pipe heater, improvement of construction in lining of afterheater for heavyduty oil catalysis, adding of acid resistance porcelain plate lining to neutralizing reactor, innovation on central drainage ...

本文归纳炼油设备技术改造的成功经验，报道炼油厂在技术改造中施工方法的改进情况和效果，其中包括：焦碳塔保温结构的改进、纤维喷涂技术在管式加热炉衬里施工中的应用、重油催化余热锅炉衬里施工方法的改进、中和反应器增加耐酸瓷板衬里、浮顶油罐中央排水管改造、锅炉省煤器入口联箱封闭和锅炉水封罐安装放空管以消除运行隐患的改造措施等。

Based on the investigation of local tube rupture, occurred several times in sidewall tube near front furnace door, the hydrodynamic analysis and calculation have been done to a blowdown system of sidewall header in a DZL6.0-l.25 steam boiler.

从对一台DZL6.0－1.25蒸汽锅炉近前炉门附近两侧炉膛水冷壁管多次发生局部爆管事故的调查出发，对该锅炉侧集箱排污系统存在的设计缺陷进行了流动分析、计算。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。