As one of the most effective soft-start equipments for large power armoured face conveyor ( AFC), valve-control filled hydrodynamic coupling has been the bottle-neck of the development of large AFC now. According to the resistance characteristic of AFC behind supports, the performance requirements of valve-control coupling were proposed. It was pointed that the design of working chamber of coupling and control valve, and manufacturing process are the key technologies of valve-control coupling. The working chamber was designed based on CFD method. The strength of pump wheel was analyzed using one-way fluid-structure interaction (FSI) and the structure of it was improved based on the FSI results. The high pressure external pilot controlled electro-hydraulic valve block was developed. A serial of technologies such as extra high-pressure assembly of keyless shaft connection and the casting of large copper alloy wheel were solved. And the valve-control coupling powered 1 000 kW was successfully developed. Experiments show that the control valve block has rapid response and the overall performance of valve-control coupling can satisfy the demand of AFC behind supports.%作为大功率刮板输送机的最有效的软启动装置之一,阀控充液型液力偶合器是目前制约我国大型刮板输送机的技术瓶颈.结合后部刮板输送机负载特性,提出了阀控偶合器性能需求,指出偶合器工作腔及控制阀组设计和制造等是阀控偶合器的技术关键.基于CFD方法优化设计了阀控偶合器腔型,采用单向流体—结构耦合(FSI)方法分析了泵轮强度,并对结构进行了优化,研制出高压外控型电液控制阀组,对无键连接轴超高压拆装、大型铜合金叶轮铸造等进行技术攻关,成功开发出1000kW阀控偶合器.试验表明所开发的偶合器控制阀组响应快速,偶合器整体特性满足后部刮板输送机要求.
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