本文關(guān)鍵詞：內(nèi)置冷干機(jī)的設(shè)計(jì)與研究　出處：《上海交通大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 冷干機(jī)內(nèi)置布局設(shè)計(jì) 匹配選型 參數(shù)計(jì)算 邏輯控制 測試檢驗(yàn)

【摘要】：從上個(gè)世紀(jì)的八九十年代開始,冷凍式干燥機(jī)(簡稱“冷干機(jī)”)在國內(nèi)逐漸有了較大的發(fā)展。隨著國內(nèi)外空壓機(jī)技術(shù)的快速提高、全球經(jīng)濟(jì)一體化的持續(xù)發(fā)展及生產(chǎn)力的逐步增強(qiáng),市場上使用者對冷干機(jī)的氣源干燥度、干燥方法、氣體后處理內(nèi)外置方法等各方面的要求也越來越高。本次論文的課題圍繞已知空氣壓縮機(jī)(以下簡稱為“空壓機(jī)”)配套對應(yīng)的冷干機(jī)展開,通過優(yōu)化結(jié)構(gòu)的設(shè)計(jì)方法和理念將冷干機(jī)和空壓機(jī)集成在一起,也稱為內(nèi)置,從而可以實(shí)現(xiàn)對空壓機(jī)和冷干機(jī)這個(gè)集成體的啟停、報(bào)警的目的。為實(shí)現(xiàn)冷干機(jī)內(nèi)置于空壓機(jī)這一技術(shù)優(yōu)化目標(biāo),論文主要對冷干機(jī)在空壓機(jī)中的布局優(yōu)化設(shè)計(jì)、冷干機(jī)的邏輯控制以及測試方法、出現(xiàn)故障后的應(yīng)對方法作詳細(xì)說明。在內(nèi)置布局的設(shè)計(jì)中,在三維模型中確定冷干機(jī)的內(nèi)置位置,對空壓機(jī)整體以及冷干機(jī)的支撐做FEA的應(yīng)力分析,從理論上驗(yàn)證冷干機(jī)內(nèi)置于空壓機(jī)后空壓機(jī)整體結(jié)構(gòu)的強(qiáng)度和剛度滿足要求。在匹配選型的過程中,首先從已知空壓機(jī)的參數(shù)入手確定所需冷干機(jī)的制冷量、露點(diǎn)要求、制冷壓縮機(jī)的功率等數(shù)值,利用露點(diǎn)計(jì)算法計(jì)算各個(gè)實(shí)驗(yàn)制冷壓縮機(jī)的相關(guān)參數(shù),選出冷干機(jī)的核心部件制冷壓縮機(jī)。接著通過制冷量的換熱計(jì)算,得到所需冷卻器的換熱面積數(shù)值,這樣就對熱交換器選型。再根據(jù)計(jì)算出的空氣流量,對風(fēng)扇廠家提供的樣本進(jìn)行選型。最后所有選型完成后,根據(jù)樣本上提供的尺寸,對制冷壓縮機(jī)、熱交換器和風(fēng)扇逐一建模。在邏輯控制的過程中,主要根據(jù)溫度和壓力的關(guān)系圖確定高壓保護(hù)開關(guān)、高溫保護(hù)開關(guān)和低溫保護(hù)開關(guān)的類型和性能范圍。在測試檢驗(yàn)的過程中,主要測試以下三個(gè)工況下的性能參數(shù)是否合格:(1)在空載工況下檢驗(yàn)制冷劑是否充注過量或者不足,控制調(diào)節(jié)旁通閥開度大小;(2)在標(biāo)準(zhǔn)工況下檢驗(yàn)設(shè)計(jì)露點(diǎn)是否達(dá)到設(shè)計(jì)目標(biāo)值;(3)在高溫工況下檢驗(yàn)冷干機(jī)在極限工作環(huán)境下是否仍可以保持持續(xù)運(yùn)轉(zhuǎn)不會停機(jī)。
[Abstract]:Since the eighties and nineties in 0th century, the refrigerated dryer ("cold dryer") has gradually developed in China, with the rapid improvement of air compressor technology at home and abroad. With the continuous development of global economic integration and the gradual enhancement of productivity, the drying degree and drying method of the air source of the cold drying machine by the users on the market. The requirements of the internal and external methods of gas aftertreatment are becoming more and more high. The subject of this paper revolves around the known air compressors (hereinafter referred to as "air compressors") corresponding to the cooling and drying machine. Through the design method and idea of optimized structure, the cold dryer and air compressor are integrated together, also called built-in, so that the start and stop of the integrated body of air compressor and air dryer can be realized. The purpose of alarm. In order to realize the technical optimization goal of the cold dryer built into the air compressor, this paper mainly focuses on the layout optimization design of the cold drying machine in the air compressor, the logic control of the cold dryer and the test method. In the design of the built-in layout, the position of the cold dryer is determined in the three-dimensional model, and the stress analysis of the whole air compressor and the support of the cold dryer is done by FEA. It is theoretically verified that the strength and stiffness of the whole structure of the air compressor built into the air compressor can meet the requirements. In the process of matching the type selection, the refrigerating capacity of the required air dryer is determined from the known parameters of the air compressor. Dew point requirements, refrigeration compressor power and other values, using the Dew Point calculation method to calculate the relevant parameters of each experimental refrigeration compressor, select the core parts of the refrigerator refrigeration compressor, and then through the cooling capacity of the heat transfer calculation. Get the heat transfer area value of the required cooler, so that the heat exchanger type selection. Then according to the calculated air flow rate, the fan manufacturer to provide the sample selection. Finally, all the selection completed. According to the size provided on the sample, the refrigeration compressor, heat exchanger and fan are modeled one by one. In the process of logical control, the high pressure protective switch is mainly determined according to the relationship diagram of temperature and pressure. Types and performance ranges of high temperature and low temperature protective switches. During testing and testing. This paper mainly tests whether the performance parameters of the following three working conditions are up to standard: 1) check whether the refrigerant is overfilled or insufficient under the no-load condition, and control the opening of the regulating bypass valve; (2) checking whether the design dew point has reached the design target value under the standard working condition; At high temperature condition, check whether the machine can keep running continuously and not shut down under the limit working condition.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TH45;TB4

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

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本文編號：1367608