Structural Analysis of Explosion Proof Mine Pump Base on the Material of QT600-3

Abstract

With the continuous development of the coal mining industry in recent years, major mine accidents caused by colliery flood emerge in endlessly in China. Therefore, mine flood has been one of the bottlenecks restricting to China's exploitation of resources and large submersible pump is the only effective equipment for the prevention and rescue in mine-flood accident. Based on the BQW50 mine pump, this paper presented a new-type explosion-proof submersible mine pump with inner motor, and put forward the explosion-proof design, structural design and hydraulic design of mine pump. In addition, three-dimension unsteady turbulent flow calculations were implemented for this mine pump, and the strain caused by water pressure in the volute could be obtained by using the elastic finite element method for non-steady-state. Moreover, through the iterative coupled calculations between the fluid mechanics and solid mechanics, coupled analyses in the volute with the material of QT600-3 were obtained. The results indicate that the maximum stress appears at the junction between the volute tongue and the cover plate while the maximal strain comes out in the front cover plate in front of the volute tongue. In the case of normal working conditions, the resonance caused by the pressure pulsation appears unlikely. This paper is instructive to the proper design on the mine pump.

The Encountered Problems and Solutions in the Development of Coal Mine Rescue Robot

“…That is why those four robots in the pike mine disasters in New Zealand are lost in the mine, causing huge losses [10]. Therefore, the new structural design and the lightweight of the robot are the most important work in the field of the rescue robots [25,26]. Molyneaux Lance proposed methods to solve the difficulties of underground mine environments; a system level design is carried out in the paper of "Development of an Underground Mine Scout Robot" [27].…”