智能型乳化液自动供配液系统的研究与实现
发布时间：2018-11-03 09:49
【摘要】：煤炭是我国的主体能源，2014年我国煤炭总产量达38.7亿吨，接近全世界煤炭产量的一半。随着我国经济的快速增长，对煤炭的需求也将逐渐上升，所以在未来很长一段时期内，煤炭作为主体能源的地位无法取代。煤矿生产随着科技进步也向着全面自动化的方向发展，综采工作面成套设备自动化是矿井自动化的重要内容。 在综采工作面，乳化液作为重要的传递能量的载体，其最重要的应用便是乳化液泵站将其提供给液压支架作为动力源。论文通过调查发现国内大多数的乳化液自动配比装置主要有以下几个特点：机械式配比，结构复杂、自动化程度低；自动化配比，选择的执行机构故障率高，配比精度有限，经常达不到浓度要求；或者其设备适应性较差，不能灵活的调节其配比浓度；不能很好的集成于其他控制系统之中，没有很好开放性等。随着煤矿自动化程度的提高，现有乳化液自动配比装置愈发暴露出很多缺点。 基于以上原因，论文重新设计研发了“智能型乳化液自动供配液系统”。系统选择液位传感器和浓度传感器采集的数据作为反馈环节，控制齿轮泵和电磁阀为动作，进行浓度连续可调的自动配比，整体具有自动运行、自动诊断、即时显示、适应性强、安全可靠等特点。 首先设计了模块化的乳化液液箱，将乳化油箱集成在其中，并合理安排布局，将系统所有的传感器和执行机构全部布置在液箱设计时预留的空腔之中，也对其内部的电气走线以及部分机构的安装进行了特别的设计，整体成型后合上相应的盖板，箱体干净整洁，集成度高。 其次在电气部分设计了组合开关，，主要包括主回路、控制回路以及保护回路的设计，并特别进行了防爆设计，包括本质安全型电路和隔爆外壳的设计。 基于上述硬件条件，设计了先进的乳化液自动配置系统，解决了现有乳化液自动配比不精确的问题，并提高了系统工作的可靠性和稳定性。具体设计方法为：设计先进的传感器信号处理方法，设计了两种配液方案，分别为体积法配比和浓度传感器反馈配比法，并设计了基于传感器故障的自动配液冗余切换方案，当传感器损坏时自动切换到另一种工作方案继续运行，并且保证配液的准确迅速。方案经过后期地面实验和井下工业现场运行验证都取得了良好的效果。
[Abstract]:Coal is the main source of energy in China. In 2014, China's total coal production reached 3.87 billion tons, nearly half of the world's coal production. With the rapid growth of China's economy, the demand for coal will rise gradually, so in a very long period of time in the future, the status of coal as the main energy can not be replaced. With the development of science and technology, the automation of complete sets of equipment in fully mechanized coal face is an important part of mine automation. In fully mechanized mining face, emulsion is an important carrier of energy transfer, and its most important application is that emulsion pump station provides it to hydraulic support as power source. Through investigation, it is found that most of the domestic emulsion automatic proportioning devices mainly have the following characteristics: mechanical proportioning, complex structure, low automation degree; Automatic proportioning, the selected actuator failure rate is high, the matching accuracy is limited, often can not reach the concentration requirements, or its equipment is poor adaptability, can not flexibly adjust its matching concentration; Not well integrated into other control systems, not very open, and so on. With the improvement of coal mine automation, the existing emulsion automatic proportioning device has exposed many shortcomings. For the above reasons, the paper redesigned and developed the intelligent emulsion automatic supply and distribution system. The system selects the data collected by the liquid level sensor and the concentration sensor as the feedback link, controls the gear pump and the solenoid valve as the action, carries on the concentration continuously adjustable automatic proportioning, the whole has the automatic operation, the automatic diagnosis, the real-time display, Strong adaptability, safety and reliability and other characteristics. First, the modularized emulsion tank is designed, the emulsified oil tank is integrated in it, and the reasonable arrangement is arranged. All the sensors and actuators of the system are arranged in the cavity reserved for the design of the tank. Special design is also made for the internal electrical wiring and the installation of some mechanisms. After the whole forming, the corresponding cover plate is closed, the box body is clean and tidy, and the integration level is high. Secondly, the combined switch is designed in the electrical part, including the main circuit, the control circuit and the protection circuit, and the design of explosion proof is carried out, including the design of intrinsically safe circuit and flameproof shell. Based on the above hardware conditions, an advanced emulsion automatic configuration system is designed, which solves the problem of inaccurate automatic proportion of emulsion, and improves the reliability and stability of the system. The specific design methods are as follows: the advanced sensor signal processing method is designed, two kinds of liquid distribution schemes are designed, one is volume matching method and the other is concentration sensor feedback matching method, and the automatic liquid distribution redundancy switching scheme based on sensor fault is designed. When the sensor is damaged, switch to another work plan to continue to run, and ensure the accurate and rapid distribution. After the later stage of surface experiment and underground industrial field operation verification, good results have been obtained.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD67
本文编号：2307438
[Abstract]:Coal is the main source of energy in China. In 2014, China's total coal production reached 3.87 billion tons, nearly half of the world's coal production. With the rapid growth of China's economy, the demand for coal will rise gradually, so in a very long period of time in the future, the status of coal as the main energy can not be replaced. With the development of science and technology, the automation of complete sets of equipment in fully mechanized coal face is an important part of mine automation. In fully mechanized mining face, emulsion is an important carrier of energy transfer, and its most important application is that emulsion pump station provides it to hydraulic support as power source. Through investigation, it is found that most of the domestic emulsion automatic proportioning devices mainly have the following characteristics: mechanical proportioning, complex structure, low automation degree; Automatic proportioning, the selected actuator failure rate is high, the matching accuracy is limited, often can not reach the concentration requirements, or its equipment is poor adaptability, can not flexibly adjust its matching concentration; Not well integrated into other control systems, not very open, and so on. With the improvement of coal mine automation, the existing emulsion automatic proportioning device has exposed many shortcomings. For the above reasons, the paper redesigned and developed the intelligent emulsion automatic supply and distribution system. The system selects the data collected by the liquid level sensor and the concentration sensor as the feedback link, controls the gear pump and the solenoid valve as the action, carries on the concentration continuously adjustable automatic proportioning, the whole has the automatic operation, the automatic diagnosis, the real-time display, Strong adaptability, safety and reliability and other characteristics. First, the modularized emulsion tank is designed, the emulsified oil tank is integrated in it, and the reasonable arrangement is arranged. All the sensors and actuators of the system are arranged in the cavity reserved for the design of the tank. Special design is also made for the internal electrical wiring and the installation of some mechanisms. After the whole forming, the corresponding cover plate is closed, the box body is clean and tidy, and the integration level is high. Secondly, the combined switch is designed in the electrical part, including the main circuit, the control circuit and the protection circuit, and the design of explosion proof is carried out, including the design of intrinsically safe circuit and flameproof shell. Based on the above hardware conditions, an advanced emulsion automatic configuration system is designed, which solves the problem of inaccurate automatic proportion of emulsion, and improves the reliability and stability of the system. The specific design methods are as follows: the advanced sensor signal processing method is designed, two kinds of liquid distribution schemes are designed, one is volume matching method and the other is concentration sensor feedback matching method, and the automatic liquid distribution redundancy switching scheme based on sensor fault is designed. When the sensor is damaged, switch to another work plan to continue to run, and ensure the accurate and rapid distribution. After the later stage of surface experiment and underground industrial field operation verification, good results have been obtained.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD67
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