管道是氣力輸送系統(tǒng)的重要組成部分，在整個(gè)系統(tǒng)中占的比例也比較重，管道也是整個(gè)系統(tǒng)中最容易出現(xiàn)問題的地方，那么在管道的選擇方面哪種規(guī)格的管道在氣力輸送系統(tǒng)中的使用最為經(jīng)濟(jì)？本文來分析這個(gè)問題。

Pipelines are an important component of pneumatic conveying systems and account for a relatively large proportion of the entire system. Pipelines are also the most prone to problems in the entire system. Therefore, in terms of pipeline selection, which specification of pipeline is the most economical to use in pneumatic conveying systems? This article will analyze this issue.

在氣力輸送系統(tǒng)中，對于給定的物料輸送能力和輸送距離，可供選擇的管道管徑規(guī)格、輸送方式和供應(yīng)壓力有很廣的范圍，選擇哪種規(guī)格的管徑和供應(yīng)壓力最經(jīng)濟(jì)，需要綜合考慮工廠的建設(shè)費(fèi)用和操作費(fèi)用，操作費(fèi)用主要是由能耗造成。

In pneumatic conveying systems, there is a wide range of pipe diameter specifications, conveying methods, and supply pressures available for a given material conveying capacity and distance. Choosing the most economical pipe diameter and supply pressure requires comprehensive consideration of the factory's construction and operating costs, which are mainly caused by energy consumption.

通過比較可知，相對于低壓稀相輸送，高壓密相輸送速度低、能耗低，因而操作費(fèi)用低;密相輸送所用管徑小，除塵設(shè)備也較小，但發(fā)送裝置(發(fā)送罐)相對于低壓所用的旋轉(zhuǎn)閥較昂貴，所以兩種方式的建設(shè)費(fèi)用需要綜合考慮。

By comparison, it can be seen that compared to low-pressure dilute phase transportation, high-pressure dense phase transportation has lower speed and energy consumption, resulting in lower operating costs; The diameter of the pipe used for dense phase transportation is small, and the dust removal equipment is also small. However, the sending device (sending tank) is relatively expensive compared to the rotary valve used for low pressure, so the construction costs of both methods need to be considered comprehensively.

對于輸送物料來說，氣力輸送形式有多種選擇，工程上常見的氣力輸送形式為稀相輸送和密相輸送，熟知稀相和密相輸送的適用場合和能耗大小是合理選擇輸送形式、降低輸送成本的前提。

For conveying materials, there are multiple options for pneumatic conveying. The common pneumatic conveying forms in engineering are dilute phase conveying and dense phase conveying. Familiarity with the applicable scenarios and energy consumption of dilute phase and dense phase conveying is a prerequisite for selecting a reasonable conveying form and reducing conveying costs.

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