查询词典 coal

Products widely used in thermal power plant boiler coal pulverizing system, piping, fan blades, shell, cement separator, drain shafts and other machinery and equipment wear and tear more serious parts.

产品广泛应用在火力发电厂锅炉制粉系统、管道、风机叶片、壳体、水泥选粉机、漏槽及其它机械设备磨损较严重部位。

Because there is no failure or strength criteria for pulverizing wheel in a fan coal-pulvenzer, the service life of a puhrerizing wheel has been decided only by production experience.

摘 要：由于缺少风扇磨煤机打击轮的判废或强度标准，只能凭借以往生产经验去决定打击轮的使用时间。

Rockburst is a mine seism that is caused to happen by mining, it is one of natural calamities. It is a dynamic phenomenon, the coal and rock mass or fault in high stress area releases a large of energy when it is disturbed and instability destroy instantaneously, and its characteristic is volcanic shake and explosive destroy.

冲击地压是采矿诱发的矿井地震，是矿井的一大自然灾害，是指矿井高应力区内煤体、岩体及断层在受外界扰动瞬间失稳破坏时，释放出很大能量而引起的以猛烈震动和爆发式破坏为特征的矿山动力现象。

This paper gives an example that is a project about repowering 2×50MW coal-fired plant as combined cycle. It is found out that after full firing repowering, the absolute efficiency gain is 4.62% and after feed water heating repowering, the absolute efficiency gain is 2.78%.

本文结合2×50MW燃煤机组改造为联合循环的方案实例，计算出排气助燃型联合循环系统更新改造使原燃煤机组绝对效率提高了4.62%，给水加热型联合循环系统更新改造使原燃煤机组绝对效率提高了2.78%。

Brokerage, agriculture, forestry, construction machinery, coal, feed processing, such as plate movement strong, have a 6% increase.

经纪，农业，林业，工程机械，煤炭，饲料加工等板块运动强烈，有6％的增长。

Based on require and need of coal mine safety in production, the pump's feed water system underground is reasoable designed.

根据煤矿安全生产的要求与需要，对井下水泵给水系统进行改进设

The key components such as drive device, feed equipment and combination roll of coal briquetting machine were improved. The bridge-type synchronous gear-drive device was designed to implement the concession of driven shaft in order to protect the costly roll. The helixes feed equipment was used to improve the plasticity of material to ensure the strength of products.

采用过桥齿轮传动实现从动型轮轴的退让，以保护价格较高的型轮部件；采用螺旋强制给料机构提高成型前物料的密度和可塑性，以保证型煤成品的强度；采用型槽与型齿对应配置的型窝，在获得同样强度的型球条件下降低成型压力，减小动力消耗。

Operational parameters, such as density, bed depth, raw coal ash content, feed velocity, air valve etc, are recorded for a long time.

通过对大量现场数据记录的分析表明，跳汰机分层状态模糊评判方法具有较高的识别精度。

The technique of producing synthetic coal gas by half water gas mix ed with exhaust of synthetic ammonia from fertilizer plants was introduced.

介绍了利用化肥厂生产过程中的弛放气经过脱硫净化，进行掺混调制成城市煤气的工艺过程。

Chemical fertilizer and C_1 chemical ; ammonia production from coal slurry ; high additional value products

化肥与C＿1化学品；水煤浆制氨；高附加值产品

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。