原文：
            9月1日下午，在由中国水网、上海市政工程设计研究总院、城投污水、上海市城市排水有限公司和中国科学技术协会主办的“2010上海（第二届）水业热点论坛”上，郑州市郑蝶阀门有限公司高级工程师赵国玺介绍了几种低碳节能产品技术。 赵国玺介绍了三种新型阀门，分别为偏心半球阀、针型阀斜座式硬密封缓闭止回阀和全压高速排气阀。 偏心半球阀阀体采用球体结构，刚性好、强度高；阀瓣采用半球结构，阀轴采用半轴结构，阀瓣全关全开为90°旋转。全开状态下，电站阀门阀瓣全部进入体腔、使阀门内腔全部畅通。阀体和阀瓣密封面,均采用硬质合金堆焊技术,高硬度、高耐磨、能切断介质中金属或编织类杂物；可抵抗浆料或颗粒状两项流介质的冲刷。可自动清除密封面污垢。阀瓣采用大偏心距结构，密封面无摩擦启闭，开关灵活，使用寿命长。阀轴密封采用柔性石墨圈或O型圈，不拆卸驱动装置即可更换和调整轴封。 斜座式硬密封缓闭止回阀阀座为倾斜式，阀门启闭行程短，低温阀门启闭性能良好。蝶板为双偏置结构，阀门启闭运动合理。采用不锈钢金属硬密封副，使用寿命长，免维护免更换。阀腔结构元件流动特性好，流阻小，节能。

         快关缓闭，能有效防止水锤。蝶板/阀轴启闭灵活、无卡滞。 有压供水管道排气问题，是几十年来世界性技术难题，由于有压输水管道排气不净，气水两相流非稳定运行，造成管道断流弥合水锤，衬里阀门其压力升高经常可达200~400m水柱，有的工程理论计算，甚至达到近千米，足以造成任何高强度的供水管道的破坏。事实上，我国大型输水工程和城市供水管网爆管事故是很多的。据有关资料，我国特大城市如北京、上海、香港等供水管网年爆管约2000次，锻钢阀门一般性省会城市年爆管约1000次，其水力上的主要原因就是排气不畅。全压高速排气阀研究的目的，就是解决有压供水管道排气不净和不稳定问题，减少或彻底消除城市供水管道的爆管顽疾。 全压高速排气阀能够在有压管道水气相间等流态下，不产生“气托”，可连续高速排气的排气阀；不需要人工辅助排气，即可高速排出任何复杂管内存气的真正全自动排气阀；具有符合水锤防护理论要求的缓冲功能，在防启泵水锤、停泵断流水锤及消除管道压力振荡危害方面效果最佳；排气口密封先进合理，克服了普通排气阀时常大量跑水的性能缺陷。

“ Low-carbon energy-saving valve Products Introduction ”是由中国闸阀网提供的阀门行业新闻，译文仅供参考。另外，中国闸阀网还提供相关产品搜索： 电动闸阀、 手动闸阀、 气动闸阀、 楔式闸阀、 刀形闸阀（刀闸阀）等。

译文：
        1 September afternoon, the water network from China, the Shanghai Municipal Engineering Design Institute, the Board voted sewage, Shanghai Urban Drainage Co., Ltd. and the China Association for Science's "2010 Shanghai (second) hot water industry forum" on Valve Co., Ltd. Zhengzhou Zheng Xi Zhao, Senior Engineer introduced the technology of several low-carbon energy products. Zhao Xi, introduced three new valves, eccentric semi-ball valve, respectively, inclined-block seal relief valve closed and the entire high pressure exhaust valve. Eccentric semi-ball valve ball structureBall Valves with good rigidity, high strength; valve flap structure with the hemisphere, the valve shaft axle structure, fully open to fully closed the valve flap 90 ° rotation. Fully open state, the valve flap all into the cavity, so that all flow valve cavity. Body and disc sealing surface, are used carbide surfacing technology, high hardness, high wear resistance, Gate Valvescan be cut or woven medium metal and impurities; resistant to the two flow media slurry or particle erosion. Automatically clear the sealing surface dirt. Disc structure with large eccentricity, the sealing surface without friction hoist, the switch flexible, long service life. Valve shaft seal with flexible graphite ring or O-ring,Butterfly Valves not the demolition drive shaft seal can be replaced and adjusted. Slow ramp-block seal valve seat is tilted closed, valves open and close a short trip, opening and closing good performance. Bias for the double disc structure, the valve opening and closing movement and reasonable. Stainless steel metal seal pair, long service life, maintenance-free replacement. Valve flow characteristics of a good cavity structure components, flow resistance, energy saving. Quickly closed off slow, canCheck Valves effectively prevent water hammer. Disc / valve opening and closing a flexible shaft, no card lag. Pressure supply piping exhaust problem, is a worldwide technical problems for decades, because of pressure water pipe exhaust, not net, non-stable operation of gas-water two-phase flow, causing water hammer in pipes Cavities, the pressure increases often up to 200 ~ 400m water column, and some engineering calculation, and even nearly 1000 meters, high enough to cause any damage intensity of the water supply pipes. In fact, China's large-scale water projects and urban water supply networks tube rupture is a lot. According to the information system of big cities like Beijing, Shanghai and Hong Kong water supply network of about 2,000 years, burst pipes, burst pipes in the general capital city of about 1,000, mainly because of its water discharge on the poor. High pressure exhaust valve of the wholePlug Valves purpose is to solve the non-pressurized water supply pipe exhaust, a net and instability, to reduce or completely eliminate the city water pipes burst pipe ills. All high pressure exhaust valve to the water in the gas phase pressure pipes and other flow patterns, does not have "air care", continuous high-speed exhaust of the exhaust valve; do not need artificial exhaust pipe can be any complex high-speed discharge The real memory automatic air exhaust valve; a consistent theory of water hammer protection required buffer functions in anti-Kai pump water hammer, water hammer and stop the pump off pressure to eliminate pipeline hazards, the best oscillation; exhaust port seal advanced and reasonable, overcome the common exhaust valve to run water from time to time the performance of a large number of defects.

原文来源：http://www.1zhafa.com/

2010-09-02 08:33

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