本文選題：礦用　切入點：無底閥　出處：《安徽理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：目前,在我國仍有許多礦井使用帶底閥或帶射流裝置的離心式水泵排水。這些排水裝置存在許多問題。例如：底閥多為鑄鐵制造,經常因為質量原因而損壞,需要更換、維修的頻率很高,使用和維護成本在積累之后會很高；底閥的能量損失約占進水管能量損失的50%-70%,占進、出水管總能量損失的10%～50%；有時因為密封不嚴,或者雜物卡住底閥,水泵灌不上水,不能正常工作；水泵底閥維修、更換時的勞動強度和工作量大；射流泵如果接入的管道密封性不好,會影響使用效果,當負壓達不到要求時,會影響水泵的啟動；從使用射流泵到開啟離心泵,一般需要一段時間,這就浪費了電能與時間,工作效率比較低,一般只有30%；使用射流泵在開關閥門和離心泵的時候是有一定順序的,如果順序不對,則離心泵不能正常啟動。 針對以上排水裝置所存在的問題,本論文設計出一種新型礦用無底閥自動排水裝置,以期為煤礦單位安全生產提供必要的技術和設備保障。本論文主要進行了以下研究工作：(1)在介紹礦井水災事故的基礎上,對礦用無底閥自動排水裝置的原理進行了有關研究,參與了相關企標的制定,為礦用無底閥自動排水裝置的研制提供必要的技術參考。(2)針對淮南市階梯電子科技有限公司設計的排水裝置軟件進行礦用無底閥自動排水裝置的外殼研制。介紹了該排水裝置的關鍵零部件的設計方案、工藝選擇,并進行工藝優(yōu)化。(3)在其防爆外殼的設計時采用Solidworks simulation對其進行1Mpa靜態(tài)壓力下的有限元分析,通過分析得出相關應力、位移分布圖、焊縫質量圖及相關參數,驗證完善后,設計參數完全滿足井下的防爆要求。(4)裝置的出廠檢驗與型式檢驗驗證了裝置設計與制造的合理性、可靠性。 國家安全生產常州礦用通訊監(jiān)控設備檢測檢驗中心開具的檢驗報告表明,礦用無底閥自動排水裝置的研制完全符合《煤炭安全規(guī)程》和GB3836.2-2010《爆炸性環(huán)境第2部分：由隔爆外殼“d”保護的設備》等國家標準對礦用排水裝置的要求。該裝置能夠根據傳感器采集到的信號以及預先設定好的控制程序實現合理開停水泵與相關閘閥,極大程度促進了我國現代化礦井智慧化建設,為我國智慧礦山奠定了一份基石。
[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.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD442

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