一起氧压机烧缸事故的分析

20 0 2年 7月 6日 ,新疆陆美工贸公司氧气厂 2号 2 1 67/1 5 0型氧压机三级缸发生着火燃烧事故。该氧压机是苏州制氧机厂产品 ,产品代号为 0 3 2 8,已连续运行 9年余。1　事故经过2 0 0 2年 7月 6日 9时 40分 ,我厂三台氧压机均在正常运行 ,其中两台是杭氧产 0 3 45A氧压机 ,一台为苏氧产 0 3 2 8氧压机。据现场操作人员回忆 ,氧压机三级排气压力在 1 1～1 2MPa之间 ,突然 2号氧压机发出“轰”的一声闷响 ,随之该氧压机中间体以上、活塞杆密封器以下被一团火焰包围 ,并向四周喷射火苗 ,火舌长达 2 5米以上 ,机体上部冷却水箱的冷却水也…     

氧压机大修莫忘禁油

襄阳富鑫制氧公司有两台杭氧产 3Ｚ 3 5 1 6 7/15 0型氧压机 ,最近在两次大修中因对禁油要求违章操作 ,结果发生了两起燃烧 ,爆炸事故。1　 1 #氧压机发生爆炸第一次发生爆炸事故是在 1# 氧压机大修结束后的第三天早晨 5点 4 0分。由于是夜晚间断制氧 ,2 0 0 2年 3月 2 6日晚 8点试车时未发生异常 ,便安排操作工在夜班间断使用 ,并注意观察情况 ,生产时主要还是用 2 # 、 3# 氧压机。3月 2 7日上午上班后 ,发现记录本上记有 1#氧压机三级带油严重的记录 ,当天我们把三级刮油环取下研磨 ,清洗后装上。3月 2 8日上午上班后 ,发现 1# 氧压机三…     

对一起氮压机燃爆事故的原因分析

SVK8 3S型氮气压缩机是由沈阳鼓风机厂制造、为义马煤气配套的低压氮气压缩机 ,共两套 ,于 2 0 0 0年 1 2月开始调试。为节约工程基建资金 ,取消原设计两台中压氮气压缩机 ,由杭氧产两台3TYS89+2TYS60型氧气透平压缩机临时压送氮气 ,向外供中压氮 ,来取代中压氮气压缩机 ,流程示意图如图 1所示。图 1　氧、氮压机工艺流程配置图1　事故情况2 0 0 0年 1 2月 2 7日中午 1 1∶3 5 ,接总调度室通知 ,要求中午 1 2∶0 0向长输管线供中压氮气。当时 ,一台氮压机试车完毕正在运行 ,一台氧压机试车完毕压氧正在运行 ,将由氧压机临时压送氮气外供…     

氧压机燃爆 制氧厂倒闭

<正>我市制氧厂,有50m~3/h制氧机一台,1986年6月8日2—1．67/150型氧压机运行0中,当三级压力到约13MPa(130kgf/cm~2,下同)时,二级压力达4MPa(正常为3．0~3．6MPa)。操作者发现后紧急停车,立即关氧气入口总阀,突然一声巨响,发生了氧压机燃烧爆炸事故,火焰分别从二三级气缸的头部和下部密封处喷出。由于火势很猛,使这台氧压机中间座以上部分在十几分钟之内基本全部烧毁。     

法国6500米~3/时空分设备压氧调节系统介绍

一、概述首钢氧气厂二套6500米3/时空分设备配置三台氧压机。二用一备。三台氧压机共用一套吸入压力自动调节系统,而每台氧压机分别设置单独的排出压力自动调节系统。调节系统是全气动的,传送的信号压力是0．2~1巴(根据法国资料,我们按0．21~1．05公斤力/厘米2调整)。     

氧压机间改造及安装运行中问题的处理

阐述了旧氧压机间改造中所涉及技术问题的处理方法 ,它们已用于施工设计。并介绍了 3Z2 5 5 /3 0型氧压机在安装、运行中遇到的问题和处理结果。     

调剂闲置空分设备

一、本处低价转让二手空分设备。1．323．5—1．67／150型充瓶氧压机8台。其中杭氧产（0345）3台；苏氧产（0328）3台；江氧产（0328）2台。上述氧压机可改造为无水润滑氧、高纯氮和氩压缩机。     

氧压机节能优化操作实践

由于氧气供需不平衡,而且转炉吹炼时间具有不确定性,造成氧压机经常性地高压放散,不但浪费能源而且产生了噪声污染。对氧压机实施炼钢时提前加载、间隙时手动卸载的操作,并合理降低氧压机排气压力的设定值,既保证了氧压机安全、稳定运行,又达到了节能降噪的效果。简介氧压机的运行现状,阐述优化操作的注意事项和效果。     

日立离心式氧压机概况

本文介绍了日本日立制作所土浦工厂的简况、日立离心式氧压机的概况、日立高压离心式氧压机的安全措施,以及日立新型氧压机(2IMB-GH型)氧压机的规格、特点等。图4,表3。     

3MCL406型氧压机燃烧的原因与改进

3MCL406型氧压机曾连续多次起火燃烧。文章简介了该氧压机的结构及事故现象。通过分析和计算,找出事故原因,提出改进措施,实现了氧压机的安全运行。     

转子压缩机与涡旋压缩机的对比与发展

空气源热泵压缩机的性能是适合不同气候条件的热泵的关键。本文回顾了转子与涡旋压缩机的发展历程,早期房间空调器用压缩机为活塞式,后期出现了转子压缩机和涡旋压缩机,压缩机效率得以提升。转子式压缩机和涡旋式压缩机均向适应低环境温度工况的方向发展。介绍了影响这两种压缩机发展的关键技术,改进电机与压缩机的结构来提升压缩机效率,通过变压比、喷气增焓、部分负荷下调节等技术,提升了压缩机系统性能系数COP与综合部分负荷性能系数IPLV(H)。采用直流电机替代交流电机,可提高两种压缩机的电机效率和频率调节范围。通过对涡旋压缩机进行不对称涡旋盘设计,可减小噪音与泄漏量;对转子压缩机的双转子进行对称布置,增大了压缩机的容量。带排气阀的涡旋压缩机可在一定程度上实现变压缩比,而转子式压缩机有排气阀,在变工况方面具有明显的优势。两种压缩机均可采用喷气增焓技术,实现热泵低环境温度较大的压缩比。     

Zur Kennlinienstabilität von Seitenkanalverdichtern About the stability of the characteristic curves of side channel compressors

In contrast to radial and axial turbocompressors side channel compressors have stable operation characteristics in the entire operation range. Up to now this attribute, which is advantageous for the operation of side channel compressors was just taken without questioning the reasons. For stable operation characteristics of turbomachiery in the widening of the characteristic field in the part-load region are aspired and demanded by many fields of application, in this document the reasons for this phenomenon in side channel compressors shall be investigated with the aim of using the responsible flow structures in other types of compressores too and of extending the safe operation range. The question has to be answered whether stage of side channel compressors are able to enforce a stable characteristic curve in a combined compressor unit when coupling with stages of other types of compressors. If side channel compressors are able to, extending the operation ranges of turbocompressors by side channelexhaust stages without surge are within reach.     

螺杆式压缩机衍生机型的内容积比优化设计

介绍螺杆式压缩机内容积比的计算方法,分析螺杆转子有效长度的变化对螺杆式压缩机内容积比的影响。指出为了改善螺杆式压缩机衍生机型的性能,需合理调整主导机型的内容积比,这对衍生机型的内容积比优化、改善衍生压缩机的性能具有实际意义。     

Modelling of reciprocating and scroll compressors

This paper presents simple and thermodynamically realistic models of two types of compressors widely used in domestic heat pumps (reciprocating and scroll compressors). These models calculate the mass flow rate of refrigerant and the power consumption from the knowledge of operating conditions and parameters. Some of these parameters may be found in the technical datasheets of compressors whereas others are determined in such a way that the calculated mass flow rate and electrical power match those given in these datasheets.The two models have been tested on five reciprocating compressors and five scroll compressors. This study has been limited to compressors with a maximum electrical power of 10 kW and for the following operating conditions: evaporating temperatures ranging from −20 to 15 °C and condensing temperatures ranging from 15 to 60 °C.The average discrepancies on mass flow rate and power for reciprocating compressors are 1.10 and 1.69% (for different refrigerants: R134a, R404A, R22, R12 and R407C). For scroll compressors, the average discrepancies on mass flow rate and power are 2.42 and 1.04% (for different refrigerants: R134a, R404A, R407C and R22).     

Commercial refrigeration and CFCs

Copeland Corporation acknowledges the contribution of CFCs to the depletion of the stratospheric ozone layer. Copeland endorse the view that CFCs should be completely phased out by the year 2000 for new refrigerant applications and that the time schedule for phase out proposed in the Montreal Protocol should be accelerated. Copeland is taking a three-stage approach to the CFC problem, concentrating on the elimination of CFC-12 and CFC-502 and substituting HCFC-22 prior to the commercial availability of alternative refrigerants. The stages are as follows. (1) Eliminate CFC-12 by providing compressors which use HCFF-22 (down to -10°F) and CFC-402. (2) Modification of existing compressors to use HCFC-22 for applications down to -40°F evaporating temperature. This can be achieved by additional air-cooling on small compressors, demand cooling for large, single compressor units, or staging for multiple compressor applications. (3) Development of compressors for new refrigerants. The problems here include the high compression ratios required by HFC-134a, which result in a major loss in capacity compared to reciprocating compressors at medium and low temperatures. HFC-125 has a low critical temperature which limits its application and efficiency in high condensing temperature applications. Lubricating oils used with HFC-134a have a detrimental effect on some motor insulation materials and polymers; wear is also higher. Scroll compressor technology appears to have several advantages over reciprocating compressors in overcoming these problems in the long term.     

多台压缩机并联的空调系统中均油方法的研究

保证冷冻油源源不断地返回压缩机是制冷系统设计中最重要的课题之一。针对现有技术中存在的缺点，开发了一种低成本的多台制冷压缩机自动均油回路，它不仅生产制造容易，维修，更换配件方便，而且对压缩机安装无任何特殊要求，理论分析了此自动均油回路对变频空调系统回油性能的影响，实验结果表明：此自控装置性能可靠、可用于大、中型变容量制冷系统。     

A comparison of SRM and Globoid type screw compressorsComparaison des compresseurs à vis SRM et Globoïdes

A study is presented of two similar types of compressors belonging to the same family, ie positive displacement, oil-injected compressors. They were both screw compressors, one of the SRM type and the other of the Globoid type. The comparison was made between two compressors with the same swept volume. The compressor geometry and losses were analysed theoretically. This analysis showed that SRM compressors have certain advantages which should result in better efficiency. It has been shown elsewhere¹⁷ that results of test runs verify the results of the theoretical comparison.     

并联涡旋式压缩机油气平衡系统模拟分析及结构优化

采用两相流Eulerian模型对并联涡旋式压缩机油气平衡系统进行CFD模拟分析,得出引起2台压缩机油位差的原因是吸气管到各台压缩机分管路压差的不平衡。为减小2台压缩机的油位差,在其中1台压缩机吸气口端设置限流环,并进行模拟分析及试验验证。结果表明,在压缩机吸气口端设置直径为23 mm的限流环可以使2台压缩机的油位差不大于2 mm,满足并联涡旋式压缩机安全运行要求。     

并联涡旋式压缩机油平衡特性的试验研究

分析并联压缩机的油平衡特性,比较几种油平衡方式,并对非平衡式的涡旋式压缩机并联机组进行油平衡试验,试验结果表明,采用丹佛斯专利技术一油气分配管,能够解决机组的油平衡问题。     

New non-dimensional performance parameters for the characterization of refrigeration compressors

Pierre (1982) developed general correlations of compressor performance for a wide range of open piston compressors based on a vast amount of data provided by the most important open compressors manufacturers at that time. Based on a wide experimental test campaign with 6 different hermetic and semihermetic compressors, this paper assesses the potential of Pierre's correlations to describe the performance of modern compressors. A full review of the functionals proposed by Pierre in order to improve their accuracy was then performed and as a result the authors found that it is possible to improve the characterization by employing a nondimensional definition of the compressor performance instead of using the efficiencies. These new parameters provide a much more consistent estimation at the borders of the correlation range than the usual correlation obtained following the ARI standard, and could be even employed to extrapolate the performance of the compressor to non-tested conditions with reasonable accuracy.