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Strategic Study of CAE >> 2011, Volume 13, Issue 11

Research and development of large power valve-control filled hydrodynamic coupling for AFC

1. China Coal Zhangjiakou Coal Mining Machinery Co.,Ltd., Zhangjiakou, Hebei 075025, China;

2. School of Mechatronic Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221116, China

Funding project:“十一五”国家科技支撑计划项目(2008BAB36B04) Received: 2011-08-26 Available online: 2011-11-18 14:32:32.000

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Abstract

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.

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References

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