倾斜井巷追排水系统及关键技术研究

发布时间：2018-03-28 17:32

本文选题：倾斜井巷　切入点：追排水系统　出处：《太原理工大学》2016年硕士论文

【摘要】：随着煤炭消耗量的增加,煤炭行业逐渐向深井方向发展,引起煤矿水灾事故的频繁发生。现有的救援排水设备不能在黄金救援时间内很好地发挥作用,因此必须逐步完善救援设备、优化排水救援方案,提高抢险排水效率。本文是以多起典型煤矿透水救援案例为背景,瞄准煤矿倾斜井巷透水工况,设计和研究一套追排水系统。在排水车样机系统上,对系统关键技术的各项性能进行理论、仿真和试验研究,并结合试验及实际工况进一步拓展和完善排水车的追排水系统。完成排水车的车架平台、轨道和履带行走机构、水泵起吊系统的装配。利用Ansys对排水车进行静力学仿真分析,仿真工况分为履带行走和轨道支撑牵引行走。由变形位移、应力及模态仿真结果得出:设计和装配的排水车在两种工况下的变形和应力满足使用条件;整车与外激励不会发生共振。与此同时,制定了煤矿倾斜巷道下的追排水方案和排水管道系统方案,包括扬程较大直接排水至地面的单泵排水、扬程较大直接排水至地面——多泵排水、扬程小于50米倒排水,以及追排水过程中的管道延伸方案。利用动力学仿真软件RecurDyn对排水车履带行走进行模拟。首先对履带行走运动学理论进行研究,基于Bekker理论推导主动轮的驱动力及力矩、车的行驶阻力以及牵引力。再重点分析排水车低速转向的动力学,进行转向时牵引力的理论研究。最后对平地直行、300坡道爬坡、单侧转向及双侧反向转向、越障及跨沟进行仿真。通过输出履带片1与主动轮的接触力、主动轮驱动力矩、履带与地面作用力、履带片1与各轮滚动接触力、履带片1的张紧力,进行排水车各工况的运行可行性及可靠性分析。由仿真结果得出:直行及300坡道行驶平稳;单、双侧转向最大平面直径为3.43m、2.695m;排水车可跨越600mm高的单侧障碍物,跨越900mm宽的凹沟。对排水车进行模拟现场试验,试验目的为:履带行走、轨陆切换、履带车与水泵配合、排水车追排水。由试验可知:轨道支撑行走系统运行平稳且不会出现倾翻和软腿现象;水泵与车的搭建效率高,起吊平稳且固定可靠,水泵起吊高度可达500mm,水泵前后可形成最大300倾角;履带行走机构在沙土地面可平稳实现前行、倒退、转向和爬坡,而且可以携带水泵进出1m深的水池完成追排水;试验中配备的蝶阀和逆止阀密封性高,管道延伸时上端水流不会泄露。根据现场试验总结的不足,进一步完善以提高追排水的速度和效率。在电控液压系统的基础上安装防爆柴油机实现双动力源行走,提高了排水车履带行走的灵活性;设计一套排水管道法兰辅助连接装置,实现法兰管道的快捷连接;设计一种排水管道位移逆止阀,随着管道的延伸在钢丝编织管内移动,提高了排水管道延伸的效率。
[Abstract]:With the increase of coal consumption, the coal industry is gradually developing to the direction of deep wells, which leads to frequent accidents of coal mine floods. The existing rescue and drainage equipment can not play a good role in gold rescue time. Therefore, the rescue equipment must be improved step by step, the drainage rescue scheme should be optimized, and the efficiency of emergency drainage should be improved. Design and study a set of drainage system. In the prototype system of drainage vehicle, the performance of key technology of the system is studied in theory, simulation and experiment. Combined with the test and actual working conditions, the drainage system of the drainage vehicle is further expanded and perfected. The platform of the frame of the drainage vehicle, the track and track walking mechanism, the assembly of the pump hoisting system are completed. The statics simulation analysis of the drainage vehicle is carried out by using Ansys. The simulation results show that the deformation and stress of the designed and assembled drains meet the operating conditions under two working conditions. There is no resonance between the whole vehicle and the external excitation. At the same time, the scheme of catch-up drainage and drainage pipe system under the inclined roadway of coal mine has been formulated, including the single pump drainage with large lift and direct drainage to the ground. The head is drained directly to the ground-multi-pump drainage, the head is less than 50 meters backward drainage, The dynamic simulation software RecurDyn is used to simulate the crawler movement of drainage vehicle. Firstly, the kinematics theory of crawler is studied, and the driving force and torque of active wheel are deduced based on Bekker theory. The driving resistance and traction of the vehicle. The dynamics of the low speed steering of the drainage vehicle is analyzed, and the theoretical study of the traction force during the steering is carried out. The contact force between the track piece 1 and the active wheel, the driving moment of the active wheel, the interaction force between the track and the ground, the rolling contact force between the track piece 1 and each wheel, and the tension force of the track piece 1 are outputted. The operating feasibility and reliability of the drainage vehicle are analyzed. From the simulation results, it is concluded that the straight and 300 ramps are running smoothly, the maximum plane diameter of single and double steering is 3.43 m / 2 695 m, and the drainage vehicle can cross the single side obstacle with high 600mm, the maximum plane diameter is 3.43 m / m and the maximum plane diameter is 2.695m. The purpose of the test is: track walking, rail land switching, track car matching with water pump, From the test, we can know that the track supporting and walking system runs smoothly and does not appear the phenomenon of overturning and soft leg, the construction efficiency of water pump and vehicle is high, the lifting is stable and fixed and reliable, The lifting height of the pump can reach 500mm, and the maximum inclination angle of 300 can be formed before and after the pump. The crawler walking mechanism can smoothly advance, retrograde, turn and climb the slope on the ground of sand soil, and can carry the pump in and out of the 1 m deep pool to complete the chasing and drainage. The butterfly valve and the reverse stop valve provided in the test have high sealing ability, and the upper end water flow will not leak when the pipeline is extended. According to the deficiency summarized in the field test, In order to improve the speed and efficiency of water recovery and drainage, the explosion-proof diesel engine is installed on the basis of electronic-hydraulic system to realize dual power source walking, which improves the flexibility of track walking of drainage vehicle, and designs a set of drainage pipe flange auxiliary connecting device. To realize the quick connection of the flange pipe, a displacement reverse stop valve of the drainage pipe is designed, which moves in the wire braided pipe with the extension of the pipe, and improves the efficiency of the drainage pipeline extension.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD442

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