压缩机

Based on the force and moment balances on the shaft and compressor frame, mathematical formulation of shaft bearing loads, unbalanced force and moment acting on the frame were made in terms of balance weight design parameters such as masses and installations of the upper and lower balance weights.

分析了在二次平衡中，主、副平衡重的安装角为任意值的条件下涡旋压缩机的动力特性，推导了在保证机架受力情况最好的条件下，通过改变平衡重的安装角来控制主轴承受力的设计公式，从而确保了轴承的使用寿命，提高了压缩机的可靠性。

In hydraulic systems where the power consumption is large, losses components will lead to undesirably elevated.

对于大型离心式压缩机而言，其润滑油的温度对压缩机的能耗及安全运行影响极大。

Impacts of varying stress on unit in low temperature, reason and harm of losing oil and slugging, and reaction to slugging for different types of compressors are analyzed. The fault cause is understood. Exact improving measures for unit and methods of faults detection are given, which solve the problem of compressor running fault in some degree.

分析了低温环境下交变应力对机组的影响、失油和液击产生的原因和危害及不同类型压缩机对液击的反应，了解了故障产生的根源，给出了改进热泵机组的具体措施及现有机组的故障检测方法，认为这样可以在很大程度上解决压缩机运行故障问题。

This paper put forward a new type mechanism vane type rotary compressor and expatiated its d...

本文提出一种新结构的旋转压缩机，阐述了这种压缩机的结构特点和工作原理。

The motor provides the power to drive all of the hydraulic functions of the drill and the air compressor which provides the large volume flow of compressed air needed for removal of drilling debris from the blasthole.

该电动机提供动力，驱动爆破钻和空气压缩机的所有液压功能，空气压缩机提供除去由钻孔里带出的钻进碎屑所需要的大容量压缩空气流。

Words:screw'air compressor with aircooling;oil二free air compressor; chlor一alkali industry

关镇询风冷型螺杆式空气压缩机；无油润滑空气压缩机；抓碱工业

An oil supply structure for vortex-type compressor is composed of oil lifter, rotary shaft and its oil channel, and the eccentrical part inserting slot and pin slot on movable vortex disk, and features that said two slots are communicated with each other via through oil hole for decreasing the abrasion between steel pin and pin slot.

通过涡旋式压缩机的供油结构，压缩机运转中通过旋转轴的油路提升喷出的油经过机油通孔向动涡盘的销槽与钢销的销之间供给充分的机油，使动涡盘的销槽与插入在销槽内的钢销的销之间进行顺利的移动，同时降低它们之间的磨损。

Acorrding to the character that wavelet transform technique can localize thetime-domain and frequency-domain, it can focalize any detail of signals and can recognize theabrupt signal and nostationary signal. The characteristics of typical fault for the centrifugalcompressor rotor are extracted by wavelet transform, and the characteristics vector is foundedby using energy as element.

通过小波变换技术对时域和频域同时具有良好的局部化性质，可以聚焦到信号的任意细节，对突变信号和非平稳信号具有很强的识别能力，利用小波包变换对离心压缩机转子典型故障的振动信号进行特征提取，并以&能量&为元素，构造离心压缩机故障信号的特征向量，以便神经网络识别。

A simulation model on the steady performance of full hermitic reciprocating compressors is presented with considering the inner heat transfer process in detail.

目前，制冷压缩机仿真模型的研究大致可以分为两类：一类是通用模型，多用于压缩机选型和系统仿真。

As the main work and energy consuming device of small and medium sized air-conditioning units, scroll compressors have much inapproachable advantages over any other kinds of compressors, such as low level of vibration and noise, light weight, high efficiency, high reliability, low energy consuming.

涡旋压缩机作为中小单元制冷空调系统的主要工作与耗能装置，具有比其他各种形式的压缩机无可比拟的优越性，如运动部件少、结构紧凑、低噪音、低振动、高效率、高可靠性和低能耗等。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。