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柴油发电机组的优缺点
编辑:广东瓦格耐电力科技有限公司   发布时间:2018-01-29

 

 柴油发电机组的特点:

    (1)、单机容量等级多。国际机组从几千瓦~几万千瓦,国内机组最大几千千瓦
    (2)、配套设备结构紧凑、安装地点灵活 (水冷只要 34~82L/KW·H 汽轮机的1/10
    (3)、热效率高,燃油消耗低 (热效率 30~46%
    (4)、起动迅速、并能很快达到全功率 只需几秒,应急1分钟内带到期全负荷(正常5~30MIN)停机过程短,可以频繁起停。
    (5)、维护操作简单,人少,备用期间保养容易
    (6)、柴油发电机组的建设与发电的综合成本最低

    柴油发电机组优点

    (1)、燃油经济、热效高、工况变化时,燃油消耗率曲线变化比较平坦,低负荷下也经济
    (2)、工作可靠、耐久。因为没有点火系统,故障低
    (3)、使用范围广
    (4)、有害排放物较低
    (5)、防火安全性好
   发电机自动调压形式有:可控硅、相复励、TD1型碳阻式自动调压,个别采用大功率管。
    
    柴油发电机组缺点:

    柴油发电机错误操作会严重影响柴油发电机组使用寿命,下面我们来了解一下在日常运行中,柴油发电机组错误操作方式有哪些?
  (1 )柴油发电机错误操作一:柴油机在机油不足时运转
  此时会因机油供给不足而造成各摩擦副表面供油不足,导致异常磨损或烧伤。为此,柴油发电机起步前和柴油机运转过程中要保证机油充足,防止由于缺油而引起拉缸、烧瓦故障。

  (2)柴油发电机错误操作二:带负荷急停机或突然卸除负荷后立刻停机
  柴油机发电机熄火后冷却系水的循环停止,散热能力急剧降低,受热件失去冷却,易造成气缸盖、气缸套、气缸体等机件过热,产生裂纹,或使活塞过度膨胀卡死在缸套内。另一方面,柴油发电机停机时未经怠速降温,会使摩擦面含油不足,当柴油机再次启动时会因润滑不良而加剧磨损。因此,柴油发电机熄火前应卸除负荷,并逐渐降低转速、空载运转几分钟。

  (3)柴油发电机错误操作三:冷启动后未暖机就带负荷运转 
  柴油发电机冷机启动时,由于机油黏度大、流动性差,是机油泵供油不足,机器摩擦面因缺油润滑不良,造成急剧磨损,甚至发生拉缸、烧瓦等故障。因此,柴油机冷却启动后应怠速运转升温,待机油温度达到40℃以上时再带负荷运转;机器起步应挂低速挡,并循序在每一挡位行驶一段里程,直到油温正常、供油充分后,方可转为正常行驶。

    (4)柴油发电机错误操作四:柴油机冷启动后猛轰油门
  若猛轰油门,则柴油发电机转速急剧升高,会造成机上的有些摩擦面因产生干摩擦而剧烈磨损。另外,轰油门时活塞、连杆和曲轴受理力变化大,引起剧烈撞击,易损坏机件。

  (5)柴油发电机错误操作五:在冷却水量不足或冷却水、机油温度过高的情况下运转
  柴油发电机冷却水量不足会降低其冷却效果,柴油机因得不到有效的冷却而过热;冷却水、机油的油温过高,也会引起柴油机过热。此时柴油发电机气缸盖、气缸套、活塞组件及气门等主要受热负荷大,其机械性能如强度、韧性等急剧下降,使零件变形增加,减小了零件间的配合间隙,加速机件磨损,严重时还会产生裂纹、机件卡住的故障。柴油发电机过热还会恶化柴油机燃烧过程,使喷油器工作失常,雾化不良,积炭增多。

 

 

Advantages and Disadvantages of Diesel Generating Sets

   Diesel generator set features:

(1)stand-alone capacity level.

(2)the supporting equipment is compact, the installation site is flexible (water-cooled as long as 34 ~ 82L / KW · H steam turbine 1/10)

(3)high thermal efficiency , Low fuel consumption (thermal efficiency 30 ~ 46%)

(4)start quickly, and can quickly reach the full power only a few seconds, emergency 1 minute with full load (normal 5 ~ 30MIN) downtime is short, Frequent start and stop.

(5)maintenance is simple, few people, easy maintenance during the spare period

(6)diesel generator sets the lowest cost of construction and power generation

Diesel generator sets advantages:

(1)fuel economy, high thermal efficiency, changes in operating conditions, the fuel consumption rate curve is relatively flat, low load is also economic

(2)reliable and durable.

(3)the use of a wide range

(4)low harmful emissions

(5)fire safety and good generator automatic voltage regulator are: SCR, phase compound excitation, TD1 type carbon Resistance automatic pressure regulator, the individual use of high-power tube. Diesel generator set Disadvantages:

Diesel generator error operation will seriously affect the life of diesel generating units, let's take a look at the daily operation of diesel generator sets wrong mode of operation which?

(1) Diesel generator error operation 1: Diesel engine running in the oil shortage at this time due to insufficient supply of oil caused by the friction surface of the fuel shortage, resulting in abnormal wear or burn. To this end, before the start of diesel generators and diesel engine operation to ensure adequate oil to prevent the lack of oil caused by pull cylinder, burner failure.

 (2) Diesel generator error operation 2: Emergency shutdown after load or sudden unloading of the load immediately after the shutdown of the diesel generator after the shutdown of the cooling system of water to stop the cooling, cooling capacity drastically reduced, the heating parts lost cooling, easy to cause cylinder head, cylinder Sets, cylinder blocks and other parts overheating,

 

 

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