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河东500KW三菱发电机组维修服务电话

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三菱发电机组维修服务电话

1.发电机进气温度异常升高的维修方法。
如果发电机出口空气温度和定子线圈温度没有超过规定值,发电机的输出可能不会降低,但应及时找出原因并进行调整。当超过规定值时,检查前应降低发电机的输出。

2.发电机线圈和铁芯温升异常的维修方法。
(1)如果超过规定值,应迅速降低负荷;
(2)迅速检查冷却空气温度,检查滤尘器是否堵塞;
(3)检查空冷器进出口阀门是否关闭。
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3.发电机过载维修方法。
发电机允许短期过载运行,过载参数和时间按下表确定:
在过载的情况下,需要在规定时间内将负载电流降至允许值,同时监测发电机各部分温度不超标。
4.发电机三相不平衡电流超标的维修方法。
当发电机三相不平衡电流超过规定值时,要检查是否是变压器电路故障引起的,否则要降低定子电流使其不超过规定值,同时要严密监视发电机各部分的温度。当发现温度异常升高,不平衡电流增加时,应紧急停机。并网运行时,不平衡电流不超过额定值的10%,所以降低送出的有功功率,看不平衡电流是否变小。如果变小了,是外网造成的,可以维持运行,也可以断开外网。
5.发电机运行中其中一个指示表突然指示异常或消失的维修方法。

2024年三菱柴油发电机维修服务厂家 三菱发电机保养服务电话

三菱发电机组为什么有的发动机上的增压器损坏后,新换的增压器寿命往往很短?
①润滑油不干净。
②油道中有杂质。
③进排气管路有异物

三菱发电机组无怠速的原因分析与故障处理:发动机无怠速,一般表现为油门置于怠速位置就熄火,当油门稍加大时,转速又很快升高,不能在低速下稳定运转
①调速器怠速弹簧过软或折断。
②调速器传感元件磨损过大。
③喷油泵柱塞磨损严重。
④温度过低。
⑤气缸压力过低

三菱发电机组怠速过高的原因分析与故障处理:发动机怠速过高,表现为抬起油门时,发动机转速仍怠速规定值。
①油门操纵杆件调整不当。
②油门回位弹簧过软。
③怠速限止块或调整螺钉失调。
④怠速弹簧过硬或预紧力调整过大

2024年(鼎盛)三菱发电机维修厂家 三菱发电机保养服务电话

三菱发电机组动力不足,排蓝烟的诊断与处理。
发动机在低温或小负荷时排兰烟,温度升高后变为排深灰色烟雾,且动力不足。
①进气不畅,导致增压器内机油被吸入气缸燃烧所致。
② _油底壳内机油过多,机油超过了高限位。
③气门导管进机油。
④气缸严重窜机油。
⑤增压器转子轴严重磨损,挡油环损坏,致使增压器达不到额定转速,漏机油


为什么增压器是发动机上容易出故障的总成?
因为增压器的额定工作转速在每分钟13万转以上,且处于排气歧管出口处,温度(800℃以上),进、排气压力也较大,即高温、高压、高转速,所以对增压器的润滑和冷却及密封的要求比较高。为了增压器的使用寿命,在设计上要对增压器浮动轴承的润滑和冷却,同时,在使用中要求做到:
① 发动机起动后应怠速运转3-5分钟,不要立即加负荷,以增压器的良好润滑。主要原因是增压器位于发动机的顶部,如果发动机起动后增压器立即开始高速运转,就会导致机油压力未能及时升高给增压器供油,造成增压器缺油损坏,甚至烧坏整个增压器。
② 怠速时间不宜过长,一般不超过10分钟,怠速时间过长容易造成压气机端漏油。
③ _停车前不要立即关闭发动机,应怠速3-5分钟,以使增压器转速和排气系统的温度降下来,防止发生回热—机油结焦—轴承烧损等故障。经常性的不正确使用会使增压器损坏。
④ 长期未使用的发动机(一般超过7天),或新换增压器的发动机,在使用前应在增压器的进油口加注机油,否则会因润滑不良降低寿命或损坏增压器。
⑤ 定期检查各连接部位是否有松动漏气/_漏油现象,回油管是否通畅,如有应及时排除。
⑥ 空气滤清器清洁,并按要求定期更换。
⑦ 定期更换机油/_机油滤清器。
⑧ 定期检查增压器轴的径向轴向间隙,轴向间隙应不大于0.15毫米,径向间隙为:叶轮与压壳的间隙不小于0.10毫米,否则应请人员维修,以免扩大损失。

2024年三菱发电机组维修厂家 保养服务电话


三菱发电机组动力不足,排灰白烟的故障诊断分析如下:
发动机动力不足,排气管排灰白烟雾,一般是喷油时间过迟所致。这时不仅高速运转不良,加速不灵敏,而且温度易过高。
① 喷油提前角过小。
② 喷油器雾化不良。
③ 发动机温度过低。
④ 气缸内有水。
⑤ 柴油中有水


三菱发电机组动力不足,排浓黑烟的故障原因分析:
发动机动力不足,转速不均,排气管排浓黑烟雾的现象有两种:一种是连续排黑烟;另一种是断续排黑烟,且发动机抖震。发动机动力不足且连续排黑烟,是发动机大多数缸或所有的缸均供油量过多,燃油与空气混合比例失调,燃烧时严重缺氧,柴油燃烧不完全,悬浮游离状的碳元素随废气一同排出而形成的。若排气管是断续排黑烟,且伴有“突突”声,说明个别缸燃烧不完全。归纳原因如下
① 喷油泵调试不当,使供油量过多,燃烧不完全。
② 多数喷油器的喷射质量差。
③ 供油不正时。
④ 进气门开启高度降低、开启时间推迟,导致进气不足。
⑤ 空气滤清器滤芯过脏或空气滤清器安装有误,使空气不流畅。
⑥ 增压器的增压效能下降。
⑦ 燃油质量过差。

1000KW三菱柴油发电机组 三菱发电机组配件

Matters needing attention in the assembly of Mitsubishi accessories Diesel generator

1. The equipment address of the Mitsubishi accessory motor set should be well ventilated, with satisfactory air inlet at the generator end and good air outlet at the diesel engine end. The area of the air outlet should be greater than 1.5 times the area of the water tank.
Mitsubishi accessories
2. The surrounding area of Mitsubishi accessory electric unit equipment should be kept clean, and items that can corrode gases and vapors such as acids and alkalis are strictly prohibited from being placed nearby. If conditions permit, rescue equipment should be equipped.

3. When using Mitsubishi accessory generator sets indoors, it is necessary to lead the exhaust pipe to the outdoors. The diameter of the exhaust pipe of the muffler and the elbow connecting the pipeline should not exceed three to ensure smooth smoke exhaust. The pipeline should be tilted down 5-10 degrees to avoid rainwater injection; If the exhaust pipe is straight up, a rain cover should be installed.

4. When concrete is used as the foundation, the levelness of the diesel generator set shall be measured with a level ruler when the equipment is used to fix the unit on a horizontal foundation. There shall be special shockproof pads or anchor bolts between the generator set and the foundation.

5. The generator casing should have reliable protective grounding. For generators with directly grounded neutral points, professional personnel should ground the neutral points and equip them with lightning protection devices. It is prohibited to use mains grounding equipment for direct neutral point grounding.

The bidirectional switch between the Mitsubishi accessory generator and the main power supply is very reliable to prevent reverse power transmission. The wiring reliability of the bidirectional switch needs to be checked and approved by the local power supply department.

Here are four main uses of diesel generator set.

1、 Self-contained power supply

Some power users have no network power supply, such as military camps, workstations, radar stations, etc. These places are far away from the mainland, remote pastoral areas, rural areas, and desert plateau, so they need to provide their own power supply. The so-called self provided power supply is self used power supply. In the case of low power generation, diesel generator sets are often a better choice for self provided power supply.

2、 Backup power supply

The backup power supply, also known as emergency power supply, is mainly used by some electricity consuming units, although they have relatively safe and reliable network power supply, to prevent unexpected situations such as circuit failures or temporary power outages, they still configure their own power supply for emergency power generation. It can be seen that the backup power supply is actually a self backup power supply, not used as the main power supply, but as a means of rescue in emergency situations.

3、 Alternative power supply

The role of standby power supply is to make up for the shortage of network power supply. There may be two situations. One is that the Electricity pricing of the grid is too high, and diesel generator sets are selected as the alternative power supply from the perspective of cost saving; Another type is when the power supply in the power grid is insufficient, the use of power in the grid is limited, and the power supply department has no choice but to switch and limit power everywhere. At this time, in order to ensure normal production and work, the power consumption unit needs to replace the power supply to alleviate the situation.

4、 Mobile power supply

Mobile power is a kind of power generation facility that has no fixed place of use but is used everywhere. The diesel generator set is a better choice for mobile power because of its portability, flexibility and ease of operation. Mobile power is generally designed for power vehicles, including self powered vehicles and trailer powered vehicles.

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1:上柴柴油机发电机组采用的是整体式的曲轴,短活塞等结构,整体的外形结构非常的紧凑,并且具有非常好的适应性,能满足不同使用环境的使用需求。另外它采用的是新型的燃烧室,在使用中能很好的改善燃烧过程,使之排放物能满足相应的排放标准。
2:其次上柴柴油机发电机组的润滑和冷却的系统都是经过优化的,这样就能有效的减少管路或是零部件的数量,使之使用起来更加的安全可靠。
3:上柴柴油机发电机组的质量是非常稳定的,它的性能的发挥也是非常安全可靠的,在实际的使用中操作和维护都非常的方便。

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