译文：
一方面是石化燃料能源的日益匮乏，一方面是人们对石化能源需求的不断增加，在不断寻找新能源的同时，目前更重要的是对现有能源的合理应用和控制。泄漏、密封问题是能源开采、运输、使用过程中最头疼的事情，也是全球气候变暖环境恶化的罪魁祸首。新型的三偏心蝶阀就是在这一偏需求声中孕育而生，它能在各种环境的管道中起到调节切断作用。 　　让我们从“三偏心蝶阀的原理说起吧，在结构上蝶阀的阀体上有与管道相连的横向阀口（即阀门通径），阀口内有阀板，轴垂直于阀口穿在阀体与阀板内。该阀板的边缘设置外球面，在阀口上设置可以与外球面配合的密封面，密封面与外球面配合密封时形成密封线与轴的轴心间有偏心距a，在阀板的横向中心线即阀口中心线与转轴的中心线间有偏心距b，在外球面的连线与阀口的中心线间有夹角α，这就是三偏心蝶阀的原理。 　　该专利产品它巧妙的把“三偏心蝶阀”的三偏心都放在了阀板上，在阀板的外边缘采用部分外球面结构。此结构需使用自行设计的简单夹具在数控机床上完成，外偏心球面经抛光处理达到粗糙度Ra0.4，球面镀铬或堆司太莱合金，硬度达到HRC45～60。 　　把偏心角放在阀板上，阀座用压圈压在阀体上，这样就解决了普通三偏心蝶阀加工困难，阀体、阀板、阀座配对使用不能互换，损坏之后维修成本过高等一系列问题，且所有零件模块化，库房管理简单，加工简单、维修方便，降低备件成本。 　　蝶阀的结构原理适合制作大口径阀门，在石油输送管道切断，冶金钢厂，煤气总管道调节、切断，化工炼油、催化、裂化、环氧丙烷、聚乙烯、聚丙烯等装置介质调节切断，水处理设备进、出水调节切断，热电站的冷却水系统，天然气，碱液，海水、酸液等行业中得到广泛应用。延长型阀盖，阀座采用 PCTFE/Kel-f，主要用于液空、液氧、液氮等-183～-196ºС的超低温场合。蝶阀结构简单、体积小、重量轻，只由少数几个零件组成。而且只需旋转1.5º即可快速启闭，操作简单，同时该阀门具有良好的流体控制特性。蝶阀处于xx开启位置时，蝶板厚度是介质流经阀体时{wy}的阻力，因此通过该阀门所产生的压力降很小，故具有较好的流量控制特性。蝶阀在关闭时，其阀板外球面与阀座密封面间的比压由外加于轴的驱动力矩产生。再加上M型弹性阀座的弹性补偿，既能实现对比压的可控又能使三偏心蝶阀的密封性能得到改善，使用寿命也大大提高。 　　我们都知道调节阀按截流元件的运动方式可分为直行程和角行程。直行程阀是截流元件（阀芯、阀板等）在流体通道里做直线运动;角行程阀是截流元件在流体通道里做旋转运动。直行程阀的介质流路复杂，呈S形，因而流阻大，流通能力小，所以流量系数Kv值小，直行程的复杂流路使介质易沉淀在节流口附近，造成堵卡，出现阀芯关不死，打不开现象，且尺寸较大，重量也大。在阀芯上下运动时容易把介质带出，密封性能差，所能承受的压差较小，当压差偏高会有冲蚀、气蚀现象。而角行程的介质流路简单，因而流动阻力小，流通能力大，Kv值大，不易使介质产生沉淀。由于流路简单，内腔和外形也简单，尺寸也较小。从种种的比较来看，角行程显然是以后调节阀的主流。 　　而在角行程的阀中再从常用的球阀、蝶阀和三偏心蝶阀做一下比较。判断一台阀的好坏要从它的调节、切断、压差、防堵、耐蚀、耐压、耐温、重量、外观以及外漏这些方面来考虑。球阀的重量太重，体积庞大，外观丑陋;普通蝶阀很难切断流体，且扭矩过大，{wy}能满足以上所有要求的就是三偏心蝶阀。这样很明显的可以看出三偏心蝶阀的优势，在阀门行业的地位不言而论。 在《京都日报》上科学家预测，到2030年左右全世界的石化燃料将消耗殆尽。国家发改委4月10日公布《能源发展“十一五”规划》提出要深化煤炭、石油天然气、电力、可再生能源等领域的体制改革，改善能源价格体系。这种种的情况都说明了石化行业给我们生活带来多么大的影响，以及控制能源、防止浪费、防止污染的迫切性。在这各种领域中阀门起着重要的作用，而从新型三偏心蝶阀的种种优点来看，新型三偏心蝶阀在阀门行业中又占有重要的位置。 　　目前我国阀门行业各生产厂家逐步加大科研和开发力度，但产品技术落伍，生产的阀门仅能满足市场要求的70%左右，造成这样的结果就是因为没有竞争力的产品出现。随着我国经济的不断发展，市场经济的不断完善，用户对市场的需求越来越高，在城建系统、环保系统、天然气系统、原油、石化、水利等各系统中都有待开发试制出高质量的阀门。新“三偏心阀门”的出现，能满足他们急切的需求，但要想彻底的弥补这个缺口，还得要阀门行业，以及各行业的不断努力，不断创新，开发出更高质量的产品来满足市场庞大的需求!

“ Butterfly valve applications in the petrochemical industry ”是由提供的国际阀门新闻，译文仅供参考。另外，中国蝶阀网还提供相关产品搜索：、、 、、等。

原文：
The one hand, the increasing scarcity of fossil fuel energy, on the one hand is the people on the increasing demand for fossil energy, constantly looking for new energy sources in the same time, there is more important is the rational application of existing energy resources and control. Leakage, sealing problems in the energy production, transportation, use of the most troublesome things, global warming, environmental degradation is the culprit. New butterfly valve is in the partial sound bred as a demand, it can play a variety of environmental regulation to cut off the pipeline effect. Let the "three eccentric butterfly valve principle Let's start with the structure of the butterfly's body there are connected with horizontal pipe valve (ie the diameter of valve), valve port plate within the valve, valve port axis perpendicular to the through the body and the valve plate. the edge of the valve plate spherical set, you can set the valve port with a seal with the outer spherical surface, spherical surface and seal with the seal formed when the seal line and the shaft are eccentric distance between the axis a, the valve plate or valve port horizontal center line center line center line and the shaft are eccentric distance between the b, outside the sphere of the connection between the center line with the valve port with angle α, which is the principle of triple eccentric butterfly valve . The ingenious patented product that the "butterfly valve" are placed on the three eccentric valve plate, valve plate at the outer edge of using some of the spherical structure. Need to use this structure to design a simple fixture in the machine tools completed by the eccentric spherical polished to roughness Ra0.4, Secretary spherical chrome or heap too Lai alloy, hardness of HRC45 ~ 60. The eccentric angle on the valve plate, valve seat ring with pressure pressure on the body, this would resolve the processing problems of ordinary three-eccentric butterfly valve, valve, valve plates, valve seat can not interchangeable pair use, damage repair costs after the high range of issues, and all components modular and simple warehouse management, processing, easy maintenance, lower spare parts cost. Butterfly valve structure principle for production of large diameter valves, cut off the oil pipeline, steel metallurgy, gas channels and regulation, cut, chemical refining, catalytic, cracking, propylene, polyethylene, polypropylene and other devices to cut off media regulation , into the water treatment equipment, water conditioning off, the thermal power station cooling water system, natural gas, lye, water, acid and other industries to be widely applied. To extend the valve cover, valve seat with PCTFE / Kel-f, is mainly used for liquid air, liquid oxygen, nitrogen and other -183 ~ -196 º С in the ultra-low temperature situations. Butterfly simple structure, small size and light weight, only by a few parts. And only 1.5 º rotation to quickly open and close, easy operation, while the fluid control valve has good features. Butterfly valve is fully open position, the thickness of the disc is only when the medium flows through the body resistance, thus generated by the valve pressure drop is small, it has a better flow control characteristics. Butterfly valve is closed, its spherical valve plate and valve seat sealing surface than the pressure applied on the shaft by the torque generated. M-elastic seat coupled with the flexibility of compensation, not only pressure to achieve contrast control can also enable the butterfly valve sealing performance is improved, life is also greatly improved. We all know the valve closure element according to the movement can be divided into straight and angular travel itinerary. Linear actuator valve is a closure device (valve, valve plates, etc.) in the fluid channel in a straight line; rotary valve closure element is made in the fluid channel in rotation. Linear actuator valve manifold complex media, was S-shaped, and thus a large flow resistance, flow capacity is small, so the value of flow coefficient Kv small, complex circuit straight trips to medium easy to settle in the vicinity of the orifice, resulting in trap, there spool off dead, could not open the phenomenon, and the larger size and weight are great. Up and down movement in the spool out of easy to medium, poor sealing performance, can bear the pressure less, when the pressure will be high erosion, cavitation phenomenon. The angle of the media stream road trip simple, and thus the flow resistance is small, large flow capacity, Kv value, which is difficult to make medium precipitation. As the flow path is simple, too simple cavity and the shape, size is also smaller. From the various comparisons, rotary control valves is clearly beyond the mainstream. The journey of the valves in the corner and from common ball valve, butterfly and butterfly valve A comparison. Panduan a good or bad valve from the Ta Taiwan's regulator, cutting, pressure difference, blockades, corrosion resistance, pressure, temperature, weight, appearance and Wailou to consider these aspects. Ball weight too heavy, bulky, ugly appearance; common butterfly is difficult to cut off the fluid, and the torque is too large, the only requirement is to satisfy all of the above three eccentric butterfly valve. This is very clear you can see the advantages of the three eccentric butterfly valve, the valve industry in terms of status words. "Kyoto Journal," Scientists predict that by around 2030 the world's fossil fuels will be exhausted. National Development and Reform Commission announced on April 10 "energy development" Eleventh Five-Year "Plan" proposed to deepen the coal, oil and gas, electricity, renewable energy and other areas of structural reform, improve the energy price system. These are not all the shows the petrochemical industry to bring our lives how much influence and control of energy, avoid waste, prevent pollution of urgency. Valves in the various areas play an important role in the new butterfly valve from all the advantages of view, the new butterfly valve in the valve industry has an important position. At present, China valve industry, manufacturers have gradually increased the research and development efforts, but outdated product technology and production to meet market demand valve only about 70%, resulting in this outcome is because there is no competitive products appear. With the continuous development of our economy, market economy and the continuous improvement of user demand on the market increasing, the urban construction systems, environmental systems, natural gas systems, crude oil, petrochemicals, water and other systems have to be developed in high-quality trial Chu valve. "Three eccentric valve" appearance, to meet their urgent needs, but to completely fill the gap is also dependent on the valve industry, as well as the industry's continuous efforts and constant innovation, to develop higher quality products to meet the needs of the huge demand!