浅议垃圾压缩机的选型

垃圾压缩机是目前中国国内进行垃圾处理最为通用的设备,它们如何分类、各种型号如何区分、有什么特性、我们应当如何选用,本文根据笔者多年工作经验,就这些问题进行分析,提出了自己的见解,希望能对实际工作有所帮助!     

垃圾压缩机的设计开发

结合图示详细分析了垃圾压缩机的结构特点和工作原理。根据垃圾压缩机的参数要求,对压缩机液压缸进行了设计开发,通过合理的设计计算,选择符合要求的液压缸;在此基础上,对液压缸内的压力液的流量进行了计算说明;结合某样机设计参数,论证了本设计开发的可靠性;最后,提出了一些有意义的防污对策。     

CTP/W5160大型温度试验库房压缩机屡损的电气回路解决方法

针对制冷压缩机长期存在缺油损坏问题,发现了压缩机因缺油运行而发生活塞卡缸或曲轴、连杆断裂等损坏的主要原因是因设备电气接线不合理控制系统未检测出压缩机缺油状态,没有及时保护性停机。完成了线路改进和模拟故障试机。设备长期可靠运行表明了改进方法的合理性和正确性。     

冰箱用直线压缩机研究

研究了一种新型结构的直线压缩机，可应用于冰箱、空调等小型制冷设备．由于采用新型磁阻式直线电机驱动，使压缩机结构简单，易于控制，可实现高效节能．分别以R134a和R600a作为制冷剂，对直线压缩机的性能参数做了理论计算，对压缩机的工作过程和阀片运动规律等进行了计算机数值模拟，得到了直线压缩机的性能参数以及阀片的运动规律、活塞受力等情况，为直线压缩机的设计提供了理论依据．计算结果表明：对于小型制冷设备，直线压缩机的性能将比现在普遍使用的往复活塞式压缩机的性能优越；直线压缩机磨损较小，具有较高的效率和经济性，而且控制系统灵活，变频效果较好．因此，直线压缩机是一种理想的新机型，有望取代现有的往复活塞式压缩机．     

撬装压缩机优点及注意事项

撬装压缩机即是指安装在可以方便移动、安装的公共底座上的压缩机设备。撬装压缩机设备的出现并非偶然,相较于非撬装压缩机设备,撬装压缩机具有较为明显的优点,但是也同时存在着它所特有的缺点。本文阐述了如何才能让设计更加合理,安装更加快捷,使用更加方便。     

以可靠性为中心的维修和状态监测技术在往复式压缩机管理中的应用

二次压缩机是高压聚乙烯生产的关键设备，长期以来其故障频繁、故障停机时间较长影响了生产的连续性、稳定性和产品质量。为提高设备运行的可靠性、安全性和利用率，采用以可靠性为中心的维修（RCM）技术，安装先进的往复式压缩机状态监测系统有效提高了设备维修决策水平，保证了生产的连续可靠运转。     

研发核心技术 抢占市场制高点

沈阳远大压缩机股份有限公司创建于1997年,从一个20多人、几台设备、靠租用场地生产压缩机配件的小工厂,发展到今天具有市场核心竞争力的国内往复活塞式压缩机的专业生产骨干企业,主要得益于不断提高自主创新能力、研发核心技术、抢占市场制高点。     

海洋平台往复压缩机振动特征研究

为研究海洋平台往复压缩机的振动特征,应用谐波小波包变换对往复压缩机的振动进行分析,探讨不同频率下振动信号的能量分布特征.结果表明,在水平方向和垂直方向,往复压缩机振动能量主要集中在25 Hz和50 Hz的低频处,其他频率振动能量小,变化平稳;在轴向,往复压缩机振动能量向中高频扩展,在225 Hz处出现较大值.因此,谐波小波包变换可用于往复压缩机振动特征研究.     

居民小区生活垃圾处理设备研究

本文对城市生活垃圾的处理方法及其设备进行了分析，根据堆肥中的微生物发酵原理，作者设计出可用于城市生活小区的小型自动化垃圾发酵处理机，该设备具有结构简单、体积小巧、可自动调控等优点，适用于小区生活垃圾的无害化处理，处理后的堆肥经过调配后可用以生产有机肥，应用前景十分广阔。     

沈阳远大压缩机制造有限公司

沈阳远大压缩机制造有限公司始建于1995年。位于沈阳经济技术开发区．公司以生产往复活塞式压缩机为主导产品，辅以螺杆式压缩机和SO刮油机等高效节能安全环保设备，目前．公司已自行开发设计、制造氢气、氯气、氮气、丙烯气、氟乙烷及各种烃类混合气等多种介质工艺压缩机和空气压缩机，     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with