译文：

一、结构上采用偏心－楔紧原理。阀体和阀芯回转中心（即阀杆轴线）与阀芯的密封球面的几何中心偏置一个径向尺寸，还与阀座密封面在阀体通道轴线上有个偏置尺寸，密封副为金属－金属外力作用下接触，阀门依靠两个偏心实现自锁关闭，偏心的合理选配使得自锁角小于摩擦角，自锁角选的太小关闭容易，开启特困难，角度选大了，虽然开启力小，但关闭力矩迅猛增加，试验台的反复试验，确定两个搭配合理的偏心量至关重要，可靠的自锁性能确保其密封严紧。这是半球阀的核心技术，从结构原理通过制造手段去实现{zj0}密封而言，球阀、蝶阀、闸阀、截止阀等确有逊色。 二、极易实现并长期保持零泄漏。阀芯与阀座的密封是球面线接触，靠偏心实现自锁，密封副在启闭的全过程几乎不接触，只在启闭的瞬间，才会接触并闸紧实现零泄漏，确保动静密封处无任何泄漏点。阀座上的结垢或其他堆积物，阀芯在接触阀座的过程中，具有强力xx结垢的能力。而闸阀的密封面在启闭的频繁往复运动中，混流介质结垢沉淀于阀体下部空腔，截止阀xx依靠正压力实现密封，阀座上的结垢无清理能力，二者盘根的经常反复磨损容易造成闸阀、截止阀的内泄外漏。球阀密封是靠阀座长期挤压在球面上，它较半球阀肯定磨损快，蝶阀密封是以橡胶为中介，它较半球阀、球阀、闸阀的金属硬密封性能相差甚远。半球阀长期使用后，阀座也会产生微量磨损，它可以通过调整继续使用，阀杆和填料在启闭过程中阀杆只需旋转90°，有泄漏迹象时，再压紧填料压盖的螺栓少许，即可实现盘根处无渗漏，而其他阀门至今仍然是小漏勉强用，大漏换阀门。中国铝业广西分公司（工作介质：赤泥浆液、强碱液溶）在使用报告中说“……该阀门操作（开、关）轻松方便，维护简便，密闭性能好，与普通闸阀相比使用寿命长，…从2001年7月使用至今（已工作近三年—编者）未发现任何机械问题及泄漏问题，从劳动强度，节能方面及泄漏方面都很受欢迎”。 三、操作极其轻便。半球阀启闭的整个过程，密封副几乎全处于无阻尼空转状态，外力只是在启闭瞬间脱离或压紧，而阀杆只需旋转90°轻便又迅速，当然操作轻便。球阀在启闭过程中是在受两端阀座的抱紧力下运转，它较半球阀启闭力矩大，公称直径愈大启闭力矩相差越明显，蝶阀的启闭是要克服橡胶的变形的来实现，力矩更大。而闸阀、截止阀操作时间长且费劲。郑州燃气公司在使用报告中说：“自99年来，先后从贵公司购其生产的‘黑马’牌半球阀百余台…，尚未发现质量问题，…，该公司的产品在结构上比普通阀门较新颖，在操作上比普通球阀较轻便……”；中国铝业山西分公司的使用报告说：“……自使用贵单位产品BQ双偏心半球阀以来，与原先所用蝶阀、闸阀、Y型阀相比，开关能够到位，轻便灵活，使用方便，降低了劳动强度，深受工人欢迎…”！ 四、使用寿命长。密封副属于双金属，在母体上堆焊不同用途的合金，经特殊热处理后，它的机械性能和理化指标达{zj0}状态，来满足不同工况（强力磨损、冲刷迅速、腐蚀严重等介质）中的需要，阀门的阀座硬度稍低于阀芯，材质不同和热处理工艺各异，需要时密封副的硬度可达HRC53以上，还可耐560℃高温。实践证明，其抗腐蚀和抗咬合能力是不锈钢密封副的6倍，阀门启闭上万次而不失效，延长了使用寿命。武汉钢铁公司在使用报告说：“在烟煤喷吹一期工程采购贵公司的手、电、气动半球阀，使用期间没有出现积灰现象，开关灵活，密封性能良好，其中用在主管线上的半球阀与引进的国外设备配套较好，且各类阀门的价格只相当于国外同类设备价格的15-20％，为武钢烟煤吹一期工程节省投资，……使用将近三年，情况良好，节约成本，减少了设备故障，减轻了工人劳动强度，受到铁厂领导和管理人员的一致好评”。又如：北京首钢在使用报告中说：“我厂在新五制粉输煤系统试验安装的‘黑马’牌半球阀取代原来球阀使用至今已超过10个月，使用证明该产品具有开启灵活、密封性好、对风源压力波动较大，使用稳定的特点，对冬季使用具有较强的适应性，……适于较恶劣工况条件使用，我厂因要求生产工艺特点要求每20分钟开关一次，因此半年多的试验期间已开闭近万次，未出现异常现象，能够满足煤粉系统使用要求……”。 五、应用范围广。我公司的多系列品种半球阀广泛使用于有色冶炼、燃气天然气、钢铁的煤粉喷吹和除尘、电力输渣、有害气体（硫化氢、光气等）及油品（重油、原油、渣油等）冶炼和输送。它之所以应用范围广，主要是因为密封副分别堆焊不同的合金，使之成为双金属，阀体、阀杆等主要零件采用所需材质，来满足不同工况，构成我公司多种产品系列。 “黑马牌”BQ双偏心式半球阀操作轻便灵活，使用寿命长，磨损能自动补偿，偏心楔紧能自动xx结垢，实现零泄漏。它的广泛采用可以大大缩短停机检修时间，降低企业的运行成本，在许多场合替代球阀、闸阀、截止阀已成为一种必然趋势。 　

“ Semi-ball valve replacement, valve, butterfly valve of ”是由提供的国际阀门新闻，译文仅供参考。另外，中国闸阀网还提供相关产品搜索：、、、、等。

原文：
First, the structure using eccentric - Principle of wedge tight. Body and the spool rotation center (the stem axis) and the spherical valve sealing the geometric center of a radial size of the bias, but also with the valve seat sealing surface channel in the body axis have a bias size, sealing the metal - metal contacts under external force, the valve depend on achieving self-locking closure of two eccentric, eccentric self-locking makes the reasonable matching angle is less than the friction angle, self-locking angle too close election easily, opening special difficulties, a large angle of election , though a small opening force, closing torque rapidly increased, test stand trial, to determine with reasonable eccentricity of two important and reliable self-locking properties to ensure tight seal. This is a semi-ball's core technology, from the structural principle by creating a means to achieve the best seal, the ball valve, butterfly valve, gate valve, globe valve and so does less. 2, easily achieve zero leakage and long-term. Valve core and valve seat seal is a spherical line contact, achieved by eccentric self-locking, sealing the entire process in the open and close almost no contact, only the opening and closing moments, and the gates will close contact with zero leakage to ensure dynamic and static seals Department without any leaks. Seat on the scaling, or other deposit, valve seat in the process of engagement with a strong capacity to remove scaling. The valve's sealing surface in the opening and closing of the frequent movement back and forth, mixed medium scale precipitation in the lower body cavity, cut-off valve completely rely on to achieve positive pressure seal, seat capacity on the scale-free clean-up, the two packing The often repeated wear and tear easily lead to valve, within the vent valve leakage. Valve seat seal is a long-term squeeze the ball through the surface, it definitely wear faster than the semi-ball valve, butterfly valve is a rubber as the intermediary, it is more semi-ball valve, ball valve, gate valve sealing performance falls far short of hard metal. Half-ball long-term use, the seat will also have micro abrasion, which can be adjusted to continue to use the stem and the packing process in the opening and closing the valve stem just rotate 90 °, there are signs of leaks, and then compress the packing gland bolts a little, no leakage can be achieved packing office, while the other valve is still reluctant to use a small leak, leakage for large valves. Aluminum Corporation of China Guangxi Branch (working medium: red mud solution, strong alkali soluble) in the use of the report that "... ... the valve operation (opening and closing) easy and convenient, easy to maintain airtight performance, with the common gate compared to a long life, ... to use from July 2001 so far (have been for nearly three years - editor) did not find any mechanical problems and leaks from the labor intensity, energy saving and leakage terms are popular. " Third, the operation is extremely light. Semi-ball valve opening and closing of the whole process, Sealing almost idling in the undamped state, external force is off, or pinched in the opening and closing moments, while the stem just rotate 90 ° light and rapid, of course, operating light. Ball in the opening and closing process is in the hold of power by both ends of the valve seat is operating, it is more semi-ball valve opening and closing torque, the larger the nominal diameter of the more obvious difference between open and close torque, butterfly valves open and close is to overcome the rubber the deformation to achieve, greater torque. The gate valve, globe valve operation a long time and strenuous. Zhengzhou Gas Company to use the report said: "Since 99 years, has your company buy their produce from the 'dark horse' brand semi-ball hundred sets ..., quality not found ..., the company's product in structure than the normal valve gate relatively new in the operation will be less than the average ball ... ... "; the use of Shanxi Branch of China Aluminum Industry Report, said:" ... ... from using the products your organization BQ double eccentric semi-ball valve has been used with the original valve, gate valve, Y type valve, switch to place, light and flexible, easy to use, reduce labor intensity and well received by workers welcome ...! " 4, long service life. Sealing is double-metal, welding in the matrix on the different uses of the alloy, with a special heat treatment, its mechanical properties and chemical indicators up to the best condition to meet the different conditions (strong wear, rapid erosion, corrosion and serious media) The need, the hardness slightly lower than the valve seat valve, different materials and different heat treatment, the hardness necessary Sealing up to HRC53 or more, but also resistance to high temperature 560 ℃. Practice has proved that its anti-corrosion and anti-bite capacity stainless steel Sealing 6 times, the valve opening and closing thousands of times without failure, extended service life. Wuhan Iron and Steel Company in the use of the report said: "In the bituminous coal injection a procurement of your hand, electric, semi-pneumatic valve, duration, no fouling phenomena, switching and flexible, good sealing performance, which in charge of line with semi-ball with the introduction of better matching of foreign equipment, and various valves similar foreign price is only about 15-20% in prices of equipment for the Wuhan Iron and Steel bituminous blowing a save investment projects, ... ... use for nearly three years, in good condition cost savings, reduced equipment failures, reduce labor intensity, the leadership and management by Iron praise. " Another example: Beijing Shougang in the use of the report, said: "I plant coal handling system in the new pilot project to install five milling the 'dark horse' license and a half ball valve used to replace the original has been more than 10 months, using that the product has turned flexible, sealing, and on the air supply pressure fluctuations, and use the stable characteristics of the winter use of more adaptive, ... ... more severe conditions suitable for the use of my factory production process for feature requests required every 20 minutes to switch once, so more than six months trial period has been open and close nearly ten thousand times, does not appear abnormal, the system can be used to meet coal requirement ... .... " 5, and wide application. Our multi-species semi-ball valve series are widely used in smelting, gas natural gas, steel and coal dust injection, power transmission and slag, harmful gas (hydrogen sulfide, phosgene, etc.) and oil (heavy oil, crude oil, residual oil etc.) smelting and transportation. The reason it wide application, mainly because of the different seal pair were surfacing alloy, making double-metal, valve body, stem and other major components with the necessary materials to meet the different conditions, constitute the many products my company series. "Dark horse brand" BQ double eccentric half ball light and flexible operation, long life, wear can be automatically compensated eccentric wedge tight automatically remove scaling, to achieve zero leakage. Its widespread adoption can greatly reduce the downtime of time, and reduce operating costs, in many cases replacement ball valve, gate valve, globe valve has become an inevitable trend.

原文来源：