Air preheater is generally referred to as air preheater. More for coal-fired power station boiler. Can be divided into two kinds rotary tube box which is divided into rotary hood rotary and rotary heating surface two. Boiler heating surface is more commonly used air preheater. The application in the boiler is generally divided into three minutes four minutes minutes and the four is often used in the circulating fluidized bed boiler. Mainly by air pre heater to provide lubrication.
The working principle of the tube box preheater: relatively simple the gas flow through the tube from the tube the air is passed through the tube and the temperature difference is different. The same with the economizer superheater the principle of.
The working principle of the air preheater is: preheater rotor parts from tens of thousands of heat transfer components sky pre slow rotators flue gas and air reverse alternately flowing through the air preheater. Heat storage element in the flue gas side of the heat in the air side of the heat so as to reduce the boiler flue gas temperature improve the preheating temperature of hot air.
3G三螺杆泵(螺杆输油泵)适用介质及性能范围:供应上海南星电站配套3GR30*4W2电厂空预器轴承油站Best Regards
李常志(Chang Zhi Li)
南京科友泵业有限公司
Nanjing Keyou pumps Co. Ltd.
江苏省南京市浦口区小柳工业园
Pukou Nanjing Jiangsu Province China Industrial Park Koyanagi
Tel: 65015112 Fax: 58871756
Mobil: QQ:
Email:cnkyby@163.com
3G三螺杆泵所输液体为各种不含固体颗粒,无腐蚀性油类及类似油的润滑性液体,所输液体粘度为1.2~100°E(3.0~760cst),高粘度液体亦可通过加温降粘后输送。 流量范围0.2~590m3/h,高工作压力100bar,高温度150℃。
3G三螺杆泵(螺杆输油泵)结构:
1、结构简单:具有多种结构形式,一般小流量0.2~6.5m3/h,泵的泵体和衬套合为一体(统称泵体),轴封为机械密封。
中等流量以上的泵衬套为一单独的零件固定于泵体内,大流量泵多制成双吸结构卧式安装,轴封根据输送介质的不同有机械密封和填料密封两种。
3G船用泵的安装形式有卧式和立式两种,原动机为交、直流船用电动机。
2、寿命长:3G三螺杆泵的主动螺杆由电动机驱动,主、从杆之间没有机械接触,而由所输压力液体驱使从杆绕轴心线自转,主、从杆之间、螺杆与衬套之间皆有一层油膜保护,因而泵的机械摩擦极小,寿命堪称半性。
3、所输液体在3G三螺杆泵内作轴向匀速直线运动,故压力脉动小,流量稳定,噪音低,由于转动部件惯性小,则起动力矩和振动很小。
4、3G三螺杆泵具有高吸入能力。
5、为保证3G三螺杆泵、电机及管路系统的安全,中等流量以上的螺杆泵均带有安全阀,当压力过安全阀的设定压力时,高压油
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