氣液兩用電磁式燃?xì)饩o急切斷閥的研制
發(fā)布時(shí)間：2018-01-08 02:31
本文關(guān)鍵詞：氣液兩用電磁式燃?xì)饩o急切斷閥的研制 出處：《北京化工大學(xué)》2016年碩士論文 論文類型：學(xué)位論文
更多相關(guān)文章： 燃?xì)饩o急切斷閥 閥門設(shè)計(jì) 燃?xì)獍踩?/b>
【摘要】：隨著城市燃?xì)獾目焖侔l(fā)展,燃?xì)庥脩舸罅吭黾?燃?xì)馐鹿室矊映霾桓F,一旦發(fā)生事故,一方面會(huì)給人民生命及財(cái)產(chǎn)造成極大損失,另一方面會(huì)對社會(huì)的公共安全構(gòu)成了不穩(wěn)定因素,因此燃?xì)庥脩魬魞?nèi)安全備受關(guān)注。在北京的燃?xì)馐鹿手?以使用液化石油氣瓶組作為燃料來源的餐飲業(yè)最為多發(fā)。北京市政府希望對這些用戶進(jìn)行治理,但此類型的供氣方式缺少相應(yīng)的燃?xì)獍踩O(shè)備。因此,設(shè)計(jì)一種應(yīng)用于以液化石油氣瓶組作為燃料來源,保障燃?xì)馐褂冒踩拈y門勢在必行。針對此種使用環(huán)境,本文參考了其他閥門的結(jié)構(gòu)及使用情況,通過研究、計(jì)算、分析及試驗(yàn)測試,設(shè)計(jì)出了一種氣液兩用的電磁式燃?xì)饩o急切斷閥。本次設(shè)計(jì)根據(jù)閥門所處的工作環(huán)境,從總體系統(tǒng)入手,分自動(dòng)控制和機(jī)械結(jié)構(gòu)兩部分進(jìn)行。自動(dòng)控制部分主要為：通過對原有電磁線圈的設(shè)計(jì)進(jìn)行小幅修改,增加磁靴和導(dǎo)磁片使磁力大幅增強(qiáng)以滿足使用要求。機(jī)械部分為全新設(shè)計(jì)：為滿足在低壓和高壓下均能關(guān)閉并密封的需求,采用了閥桿和閥瓣不在同側(cè)的反向關(guān)閉結(jié)構(gòu),同時(shí)為了滿足高壓下能開啟閥瓣,設(shè)有先導(dǎo)閥；閥體、閥蓋這兩個(gè)主要承壓件為滿足防腐要求,采用鑄鋁(ZL101-T6)材質(zhì),通過壁厚計(jì)算進(jìn)行設(shè)計(jì)以保證強(qiáng)度,由Pro/E建立三維模型,并使用其Mechanica模塊進(jìn)行分析,驗(yàn)證設(shè)計(jì)可靠；閥桿采用不銹鋼(06Cr19Ni10)材質(zhì),通過運(yùn)動(dòng)行程計(jì)算出閥桿的長度及各結(jié)構(gòu)的位置,由Pro/E建立三維模型,并使用其Mechanica模塊進(jìn)行形變分析,驗(yàn)證設(shè)計(jì)可行；閥瓣采用不銹鋼+氟橡膠的材質(zhì),通過計(jì)算密封比壓,并通過Pro/E及其Mechanica模塊進(jìn)行形變分析,驗(yàn)證密封滿足是設(shè)計(jì)要求；通過Pro/E模擬進(jìn)行裝配,驗(yàn)證各零部件之間無沖突,使實(shí)際裝配更加順利。樣機(jī)裝配完成后,對其進(jìn)行了基本性能、功能及耐用性方面的試驗(yàn)：基本性能測試,驗(yàn)證了閥門強(qiáng)度和致密性安全可靠；功能測試,驗(yàn)證了閥門完成設(shè)計(jì)動(dòng)作不會(huì)出現(xiàn)問題；耐久性測試,驗(yàn)證了閥門在壽命期內(nèi)可放心使用。本文根據(jù)需求方北京市市容市政管理委員會(huì)提出的功能需求,通過對氣液兩用電磁式燃?xì)饩o急切斷閥的設(shè)計(jì),實(shí)現(xiàn)此類使用環(huán)境的安全閥門從無到有的突破,為北京甚至全國的液化石油氣瓶組的使用用戶提供更安全的保障。
[Abstract]:With the rapid development of urban gas, the number of gas users increases greatly, and gas accidents emerge in endlessly. Once accidents occur, on the one hand, it will cause great loss of people's lives and property. On the other hand, it will constitute an unstable factor to the public safety of the society, so the safety of gas users in the household is of great concern. In the gas accident in Beijing. The catering industry that uses liquefied petroleum gas (LPG) as fuel source is the most common. The Beijing Municipal Government wants to treat these users, but this type of gas supply lacks the corresponding gas safety equipment. It is imperative to design a kind of valve which can be used as fuel source to ensure the safe use of gas. In view of this kind of service environment, this paper refers to the structure and application of other valves, and through the research. By calculation, analysis and test, a gas-liquid electromagnetic gas emergency cut-off valve is designed. According to the working environment of the valve, the design starts with the overall system. It is divided into two parts: automatic control and mechanical structure. The automatic control part is mainly: the design of the original electromagnetic coil is modified slightly. The mechanical part is completely new designed to meet the requirements of closing and sealing at low and high pressure. The reverse closing structure of the stem and disc is not on the same side, and the pilot valve is provided to meet the need of opening the disc under high pressure. In order to meet the requirements of anticorrosion, the valve body and bonnet are designed to ensure the strength through the calculation of wall thickness, and the three-dimensional model is established by Pro/E. The Mechanica module is used to analyze and verify the reliability of the design. The stem is made of stainless steel 06Cr19Ni10. The length of the stem and the position of each structure are calculated by the movement stroke, and the three-dimensional model is established by Pro/E. The Mechanica module is used for deformation analysis to verify the feasibility of the design. The disc is made of stainless steel fluorine rubber, the seal specific pressure is calculated, and the deformation analysis is carried out by Pro/E and its Mechanica module to verify that the seal meets the design requirements. The assembly is simulated by Pro/E to verify that there is no conflict between the components and make the actual assembly more smooth. After the prototype assembly is completed, the basic performance of the prototype is carried out. Functional and durability tests: basic performance tests verify the safety and reliability of valve strength and compactness; Function test, verify that the valve design action will not appear problems; The durability test verifies that the valve can be safely used in the life cycle. According to the functional requirements of the Beijing Municipal appearance Administration Committee on the demand side, the design of the gas-liquid dual-purpose electromagnetic gas emergency cut off valve is carried out in this paper. To achieve this kind of safety valve from scratch to the use of the environment to provide a more safe protection for the use of LPG cylinders in Beijing and even throughout the country.
【學(xué)位授予單位】：北京化工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TH134
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