蔡毅 吴孔燕 丁巍 刘智 周星彪

【摘要】供水管网是现代社会必需的基础设备，超大口径阀门是我国南水北调工程、城市供水管网的关键设备。此前国内超大口径阀门设计生产经验不足，阀门工作中出现了泥沙进入弹簧腔导致阀座失效、洪水倒灌导致阀门反向泄漏、阀门关键部件阀芯不耐用等一系列问题。我司研发的固液相分离技术、液压传动强制密封技术、多重密封技术、抗气蚀、耐冲刷等核心技术能有效解决问题，满足客户需求。偏心球阀具有密封可靠、检修安全、使用寿命长、智能控制等特点，其价格仅为同类进口产品的一半左右，能替代同类进口产品，打破了此类产品长期被国外垄断的局面。

【关键词】超大口径阀门；偏心半球阀；固液相分离；安全检修；抗气蚀和冲刷

【DOI編码】10.3969/j.issn.1674-4977.2023.04.035

Solution for Sealing System of Oversized Eccentric Hemispherical Valve

CAI Yi1*， WU Kongyan2， DING Wei3， LIU Zhi1， ZHOU Xingbiao1

（1. Special Technology Valve Group Co.， Ltd.， Wenzhou 325103， China； 2. Jiangmen Xinhui Special Sealing Technology Co.， Ltd.， Jiangmen 529080， China； 3. Kaifeng Ruifa High and Medium Pressure Valve Co.， Ltd.， Kaifeng 271000， China）

Abstract： The water supply pipe network is the necessary basic equipment in modern society， and the super large diameter valve is the key equipment of the South–North Water Transfer Project and urban water supply pipe network. Previously， there was insufficient experience in the design and production of large diameter valves in China. During valve operation， there were a series of problems such as sediment entering the spring chamber leading to valve seat failure， flood backflow leading to valve reverse leakage， and the valve core， a key component of the valve， being not durable. Our companys core technologies such as solid-liquid phase separation technology， hydraulic transmission forced sealing technology， multiple sealing technology， anti cavitation， and erosion resistance can effectively solve problems and meet customer needs. Eccentric ball valves have the characteristics of reliable sealing， safe maintenance， long service life， and intelligent control. Their price is only about half of that of similar imported products， which can replace similar imported products and break the long-term monopoly of such products by foreign countries.

Key words： ultra large diameter valve； eccentric hemispherical valve； solid liquid phase separation； safety maintenance； resistance to cavitation and erosion

供水管网是现代社会必需的基础设备，对保障人民生活安定和城市建设发展起着至关重要的作用，被形象地称作城市的“水动脉”。阀门是管路系统的关键部件，用于开闭管路、控制流向、调节和控制输送介质的参数（温度、压力和流量），具有截止、调节、导流、防止逆流、分流或溢流泄压等功能[1]。

我国供水管网规模化建设的开展对大口径球阀提出了迫切需求。以南水北调工程为代表的国家工程的建设，以及淮河治理新三项工程，太湖、洞庭湖、鄱阳湖的综合治理工程，黄河宁蒙河段、长江中下游河势控制等大江大河重点河段治理，以上工程的建设均需要大量的阀门流体装备配套，所需阀门口径达到DN2000。……