矿用无底阀自动排水装置关键部件的研发与试验

发布时间：2018-03-11 07:50

本文选题：矿用　切入点：无底阀　出处：《安徽理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：目前,在我国仍有许多矿井使用带底阀或带射流装置的离心式水泵排水。这些排水装置存在许多问题。例如：底阀多为铸铁制造,经常因为质量原因而损坏,需要更换、维修的频率很高,使用和维护成本在积累之后会很高；底阀的能量损失约占进水管能量损失的50%-70%,占进、出水管总能量损失的10%～50%；有时因为密封不严,或者杂物卡住底阀,水泵灌不上水,不能正常工作；水泵底阀维修、更换时的劳动强度和工作量大；射流泵如果接入的管道密封性不好,会影响使用效果,当负压达不到要求时,会影响水泵的启动；从使用射流泵到开启离心泵,一般需要一段时间,这就浪费了电能与时间,工作效率比较低,一般只有30%；使用射流泵在开关阀门和离心泵的时候是有一定顺序的,如果顺序不对,则离心泵不能正常启动。针对以上排水装置所存在的问题,本论文设计出一种新型矿用无底阀自动排水装置,以期为煤矿单位安全生产提供必要的技术和设备保障。本论文主要进行了以下研究工作：(1)在介绍矿井水灾事故的基础上,对矿用无底阀自动排水装置的原理进行了有关研究,参与了相关企标的制定,为矿用无底阀自动排水装置的研制提供必要的技术参考。(2)针对淮南市阶梯电子科技有限公司设计的排水装置软件进行矿用无底阀自动排水装置的外壳研制。介绍了该排水装置的关键零部件的设计方案、工艺选择,并进行工艺优化。(3)在其防爆外壳的设计时采用Solidworks simulation对其进行1Mpa静态压力下的有限元分析,通过分析得出相关应力、位移分布图、焊缝质量图及相关参数,验证完善后,设计参数完全满足井下的防爆要求。(4)装置的出厂检验与型式检验验证了装置设计与制造的合理性、可靠性。国家安全生产常州矿用通讯监控设备检测检验中心开具的检验报告表明,矿用无底阀自动排水装置的研制完全符合《煤炭安全规程》和GB3836.2-2010《爆炸性环境第2部分：由隔爆外壳“d”保护的设备》等国家标准对矿用排水装置的要求。该装置能够根据传感器采集到的信号以及预先设定好的控制程序实现合理开停水泵与相关闸阀,极大程度促进了我国现代化矿井智慧化建设,为我国智慧矿山奠定了一份基石。
[Abstract]:At present, there are still many mines in our country that use centrifugal pumps with bottom valves or jet devices to drain water. There are many problems with these drains. For example, the bottom valves are mostly made of cast iron and often damaged because of quality reasons and need to be replaced. The frequency of maintenance is very high, and the cost of use and maintenance will be very high after accumulation; the energy loss of the bottom valve accounts for about 50-70% of the energy loss in the intake pipe, accounting for 10% of the total energy loss of the outlet pipe; sometimes it is due to lax sealing or sundries blocking the bottom valve. The pump cannot be filled with water and can not work normally; the pump bottom valve is repaired and the labor intensity and workload are great when it is replaced; if the pipe connected to the jet pump is not well sealed, it will affect the effect of use, and when the negative pressure does not reach the requirement, From using the jet pump to opening the centrifugal pump, it usually takes some time, which wastes electricity and time, and the efficiency is relatively low. Generally only 30; the use of jet pump in the switch valve and centrifugal pump when there is a certain order, if the order is not right, the centrifugal pump can not start normally. In view of the problems existing in the above drainage devices, a new type of mine bottomless valve automatic drainage device is designed in this paper. In order to provide the necessary technical and equipment guarantee for the safety production of coal mine units, this paper mainly carried out the following research work: 1) on the basis of introducing mine flood accident, the principle of mine bottomless valve automatic drainage device was studied. Participated in the development of the relevant enterprise bid, To provide the necessary technical reference for the development of mine bottomless valve automatic drainage device. (2) to develop the shell of mine bottomless valve automatic drainage device based on the drainage device software designed by Huainan stepped Electronic Technology Co., Ltd. The design scheme of the key parts of the drainage device is given. Process selection, and process optimization. 3) finite element analysis under static pressure of 1Mpa is carried out by Solidworks simulation in the design of explosion-proof shell. Relevant stress, displacement distribution map, weld quality diagram and relevant parameters are obtained through analysis. After the verification, the design parameters fully meet the requirements of explosion proof. 4) the factory inspection and type inspection of the device verify the rationality and reliability of the design and manufacture of the device. The inspection report issued by the National Center for testing and Inspection of Changzhou Mine Communication Monitoring equipment for safe production shows that. The development of mine bottomless valve automatic drainage device fully conforms to the requirements of national standards such as Coal Safety Code and GB3836.2-2010 < explosive environment part 2: equipment protected by flameproof shell "d". According to the signal collected by the sensor and the pre-set control program, the water pump and related gate valve can be turned on and off reasonably. To a great extent, it has promoted the construction of modern mine intelligence and laid a foundation stone for our country's intelligent mine.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD442

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