针对H16V190低浓度瓦斯机组现场出现的问题并提升机组现场运行动力性,对低浓度瓦斯气源的适应性和机组可靠性以及机组控制系统、燃气系统、排气系统、润滑系统等进行了优化设计。经过现场验证,优化后机组可以满足10%~40%低浓度瓦斯要求...针对H16V190低浓度瓦斯机组现场出现的问题并提升机组现场运行动力性,对低浓度瓦斯气源的适应性和机组可靠性以及机组控制系统、燃气系统、排气系统、润滑系统等进行了优化设计。经过现场验证,优化后机组可以满足10%~40%低浓度瓦斯要求,在现场低浓度瓦斯条件下机组连续运行功率950 k W以上,排气系统可靠性问题得到了解决,实现了优化设计目标。展开更多
This paper presented a design of an automatic lifting system. It is used for large load powered support and improves the old method wherein powered support lifting depends on manual control. This system applies a high...This paper presented a design of an automatic lifting system. It is used for large load powered support and improves the old method wherein powered support lifting depends on manual control. This system applies a high accuracy gear shunt motor to match the flow for 4 lifting cylinders, and also allocates bypass throttles to realize automatic lifting. Through the dis- placement sensor feedback the height deviation among 4 lifting cylinders during the whole lifting process, when the deviation is up to the sitting value, the corresponding bypass throttle is operated immediately to reduce the deviation, so that the moving platform of the powered support would not be stuck. Through real application, it is shown that this system can realize automatic lifting of powered support; the lifting speed is controlled between 5 and 10 mm/s, and the final aligning accuracy is up to 1 mm.展开更多
文摘针对H16V190低浓度瓦斯机组现场出现的问题并提升机组现场运行动力性,对低浓度瓦斯气源的适应性和机组可靠性以及机组控制系统、燃气系统、排气系统、润滑系统等进行了优化设计。经过现场验证,优化后机组可以满足10%~40%低浓度瓦斯要求,在现场低浓度瓦斯条件下机组连续运行功率950 k W以上,排气系统可靠性问题得到了解决,实现了优化设计目标。
文摘This paper presented a design of an automatic lifting system. It is used for large load powered support and improves the old method wherein powered support lifting depends on manual control. This system applies a high accuracy gear shunt motor to match the flow for 4 lifting cylinders, and also allocates bypass throttles to realize automatic lifting. Through the dis- placement sensor feedback the height deviation among 4 lifting cylinders during the whole lifting process, when the deviation is up to the sitting value, the corresponding bypass throttle is operated immediately to reduce the deviation, so that the moving platform of the powered support would not be stuck. Through real application, it is shown that this system can realize automatic lifting of powered support; the lifting speed is controlled between 5 and 10 mm/s, and the final aligning accuracy is up to 1 mm.
