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渣漿泵的原動機(jī)選擇
一、原動機(jī)的類型
泵的原動機(jī)類型選擇一般可根據(jù)其動力來源、工廠或裝置的能量平衡環(huán)境條件、調(diào)節(jié)控制要求及經(jīng)濟(jì)效益等條件進(jìn)行綜合考慮來確定。泵的原動機(jī)類型常用的有以下幾種:
(1)電動機(jī)。具有結(jié)構(gòu)簡單、運行可靠、經(jīng)濟(jì)、壽命長、維護(hù)方便、價格便宜、體積小、啟動操作簡單等特點。所以使用最為廣泛，凡有電網(wǎng)的地方都首選電動機(jī)作為原動機(jī)。
(2)汽輪機(jī)。只有在有蒸汽源的場合下使用，常為改善工廠的蒸汽平衡而使用。它適用于大中型泵中，具有可調(diào)速，防爆防燃下工作并可用于無電或停電情況下使用。
(3)蒸汽機(jī)。只有在有蒸汽源的場合下使用，它的體積大、效率低、轉(zhuǎn)速低，目前已很少使用，只有在特定的場合下使用。
(4) 內(nèi)燃機(jī)。包括汽油機(jī)、柴油機(jī)、燃?xì)廨啓C(jī)。一般在無電、停電或移動使用場合下使用，其相對體積較大，結(jié)構(gòu)復(fù)雜，壽命短，不但購置成本高，運行維修成本也很高，所以只有在無電、移動情況下使用，常作為緊急停電的應(yīng)急備用泵的原動機(jī)。
(5)液力透平。常在為了循環(huán)液體動力回收情況下使用，可以節(jié)省動力。
由于電動機(jī)本身的優(yōu)點，以及目前電網(wǎng)的普及，所以使用最為廣泛，本書將詳細(xì)闡述電動機(jī)的選擇。渣漿泵廠家
Prime mover selection of slurry pump
I. types of prime movers
The type of prime mover of the pump can be generally determined by comprehensive consideration of its power source, energy balance environmental conditions of the plant or device, regulation and control requirements, economic benefits and other conditions. There are several types of prime movers commonly used for pumps:
(1) motor. The utility model has the advantages of simple structure, reliable operation, economy, long service life, convenient maintenance, low price, small volume, simple starting operation, etc. Therefore, the most widely used, where there is a power grid, the motor is preferred as the prime mover.
(2) steam turbine. It can only be used when there is steam source. It is often used to improve the steam balance of the plant. It is suitable for large and medium-sized pumps, with adjustable speed, explosion-proof and flame-proof, and can be used in case of no power or power failure.
(3) steam engine. It is only used in the case of steam source. It has large volume, low efficiency and low speed. It is rarely used at present, and only used in specific occasions.
(4) internal combustion engine. Including gasoline engine, diesel engine and gas turbine. Generally, it is used in the situation of no power, power failure or mobile use, with relatively large volume, complex structure and short service life, not only high purchase cost, but also high operation and maintenance cost. Therefore, it is only used in the situation of no power, mobile use, often as the prime mover of emergency standby pump for emergency power failure.
(5) hydraulic turbine. Often used in order to recycle liquid power, it can save power.
Due to the advantages of the motor itself, as well as the popularity of the current power grid, so the most widely used, this book will elaborate on the selection of the motor. Slurry pump manufacturer
