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发电机组的选购方法

来源:https://www.huannengpower.cn/ 文章作者:济柴环能 发布时间:2022-12-27
柴油发电机组作为应急备用电源,源于它的可靠性,及时性和安全性,越来越被广大客户所接受和使用。但是,采购一台合适的柴油发电机组并不是一件轻松容易的事。今天湖南发电机组厂家示旺公司和大家聊聊有关采购湖南柴油发电机时要注意的问题和细节。接下来,示旺公司给您剖析一下。一定要注意以下几点:
As an emergency standby power supply, diesel generator set is more and more accepted and used by customers due to its reliability, timeliness and safety. However, it is not easy to purchase a suitable diesel generator set. Today, Hunan generator set manufacturer Shiwang Company talked with you about the problems and details that should be paid attention to when purchasing Hunan diesel generators. Next, Shiwang Company will analyze it for you. Pay attention to the following points:
一、用户在购买时应留意的八大陷阱
1、 Eight traps users should pay attention to when purchasing
1、混淆KVA和KW的关系。把KVA当成KW夸大功率,卖给客户。实际上KVA是视在功率,KW是有效功率,他们之间的关系为IKVA=0.8KW。进口机组一般用KVA表示功率单位,而国内用电设备一般都用KW表示,所以核算功率时应把KVA打8折换算成KW。
1. Confuse the relationship between KVA and KW. Exaggerate the power of KVA as KW and sell it to customers. In fact, KVA is the apparent power and KW is the effective power. The relationship between them is IKVA=0.8KW. The power unit of imported units is generally expressed in KVA, while that of domestic electric equipment is generally expressed in KW, so KVA should be converted into KW at a discount of 20% when calculating power.
2、不讲长行(额定)功率和后备功率的关系,仅说一个“功率”,把后备功率当作长行功率卖给客户。实际上,后备功率=1.1x长行功率。而且,后备功率只能在12小时连续运行中使用1小时。
2. We don't talk about the relationship between long-term (rated) power and backup power, but only about "power". We sell the backup power to customers as long-term power. In fact, the backup power=1.1 x long travel power. Moreover, the backup power can only be used for 1 hour in 12 hour continuous operation.
3、柴油机功率与发电机的功率配置成一样大,以求降低成本。实际上,业内一般规定柴油机功率≥发电机功率10%,因为有机械损耗。更为恶劣的,还有的把柴油机马力当作千瓦误报给用户,及用小于发电机功率的柴油机来配置机组,俗称:小马拉大车,以至机组寿命降低,维修频繁,使用费居高不下。
3. The power of the diesel engine is as large as that of the generator to reduce the cost. In fact, it is generally stipulated in the industry that the power of diesel engine is equal to or greater than 10% of the power of generator because of mechanical losses. Even worse, some people mistakenly report the horsepower of the diesel engine to users as kilowatts, and use diesel engines with less power than the generator to configure the unit, commonly known as "small horses pull big cars", so that the unit life is reduced, maintenance is frequent, and the use fee is high.
4、把二手机翻新机当作全新机卖给客户,还有的将翻新的柴油机配上全新的发电机及控制柜,使一般非专业用户根本分不清究竟是新机还是旧机。
4. The second mobile phone refurbished machine is sold to customers as a brand new machine, and the refurbished diesel engine is equipped with a brand new generator and control cabinet, so that ordinary non professional users can not tell whether it is a new machine or an old one.
5、只报柴油机或发电机,不报产地,不报机组。如美国康明斯、瑞典volvo、英国史坦福。实际上任何一台柴油发电机组均不可能由一家企业独立完成。客户应全面了解机组的柴油机、发电机、控制柜制造厂家及,才能综合评估出机组的档次。
5. Only the brand of diesel engine or generator shall be reported, not the place of origin or the brand of unit. For example, Cummins in the United States, Volvo in Sweden and Stamford in the United Kingdom. In fact, any diesel generator set cannot be completed independently by one enterprise. The customer should fully understand the manufacturer and brand of diesel engine, generator and control cabinet of the unit, so as to comprehensively evaluate the grade of the unit.
6、将不带保护功能(俗称四保护)的机组当成保护功能齐全的机组卖给客户。更有甚者,将仪表不全、不带空气开关的机组推销给客户。实际上,业内一般规定10KW以上的机组必须带全仪表(俗称五表)及空气开关;大型机组及自动化机组必须带有自四保护功能。
6. The unit without protection function (commonly known as four protections) is sold to customers as a unit with complete protection functions. What's more, they sold the units with incomplete instruments and without air switches to customers. In fact, it is generally stipulated in the industry that units above 10KW must be equipped with full instruments (commonly known as five meters) and air switches; Large units and automatic units must have self four protection functions.
7、不谈柴油机及发电机的档次、控制系统配置,不谈售后服务,一味只谈价格及交货期。有的还将非电站专用油机,如:船用柴油机,车用柴油机用于发电机组。使机组的终端产品—-电的质量(电压与频率)无法得以保证。太低价格的机组一般有问题,俗称:只有买错没有卖错!
7. We don't talk about the brand level of diesel engine and generator, control system configuration, after-sales service, but only about the price and delivery date. Some also use non power station specific oil engines, such as marine diesel engines and vehicle diesel engines for generator sets. The quality (voltage and frequency) of electricity, the terminal product of the unit, cannot be guaranteed. The unit with too low price generally has a problem, commonly known as: only buy wrong, not sell wrong!
8、不谈随机配件情况,如带不带消音器、油箱、输油管,带什么档次电瓶、多大容量电瓶、几个电瓶等等。实际上,这些附件十分重要,必须在合同中写明。更有甚者连水箱风扇都不带,让客户自搞开式水池。
8. We don't talk about the accompanying accessories, such as with or without muffler, oil tank, oil pipe, what grade of battery, what capacity of battery, several batteries, etc. In fact, these annexes are very important and must be specified in the contract. What's more, they don't even have a fan for the water tank, so customers can open the water tank by themselves.
二、机组购置
2、 Unit purchase
在选购柴油发电机组时应充分考虑柴油发电机组的综合性能和经济指标,供应商的敬业精神、地理位置和实际专业程度,供应商是否具备售后服务手段,如抢修、专用工具技术等。然后再考虑所选机组功率与用电负荷功率是否匹配。一般以:机组额定功率x0.8=用电设备功率来选定机组功率为好。若有大中型电动机则还需考虑2-5倍的起动电流。若机组主要用于对UPS充电,则必须根据UPS的实际情况作一次专业咨询,然后再决定发电机额定功率。
When selecting and purchasing diesel generator sets, full consideration shall be given to the comprehensive performance and economic indicators of the diesel generator sets, the professionalism, geographical location and actual professional level of the suppliers, and whether the suppliers have after-sales service means, such as emergency repair, special tool technology, etc. Then consider whether the power of the selected unit matches the power of the electrical load. Generally, it is better to select unit power based on rated power of unit x0.8=power of electric equipment. If there are large and medium-sized motors, 2-5 times of starting current shall also be considered. If the unit is mainly used to charge UPS, a professional consultation must be made according to the actual situation of UPS, and then the rated power of the generator must be determined.
三、机组安装
3、 Unit installation
柴油发电机组使用前,应进行安装与连接。柴油发电机组安装时,应注意以下事项:
The diesel generator set shall be installed and connected before use. When installing the diesel generator set, pay attention to the following matters:
1、 安装地点需通风良好,发电机端应有足够的进风口,柴油机端应有良好的出风口。出风口面积应大于水箱面积1.5倍以上。
1. The installation site shall be well ventilated, the generator end shall have sufficient air inlet, and the diesel engine end shall have good air outlet. The air outlet area shall be more than 1.5 times of the water tank area.
2、 安装地的周围应保持清洁,避免在附近放置能产生酸性、碱性等腐蚀性气体和蒸汽的物品。有条件的应配置灭火装置。
2. The surroundings of the installation site shall be kept clean, and articles that can produce corrosive gases and steam such as acid and alkali shall not be placed nearby. Fire extinguishing devices shall be provided if conditions permit.
3、 若在室内使用,必须将排烟管道通到室外,管径必须≥消音器的出烟管直径,所接之管路的弯头不宜超过3个,以保证排烟畅通,并应将管子向下倾斜5--10度,避免雨水注入;若排气管是垂直向上安装的,则必须加装防雨罩。
3. If it is used indoors, the smoke exhaust pipe must be connected to the outside. The pipe diameter must be equal to or greater than the diameter of the muffler's smoke outlet pipe. There should be no more than 3 elbows of the connected pipe to ensure smooth smoke exhaust. The pipe should be inclined downward by 5 to 10 degrees to avoid rainwater injection; If the exhaust pipe is installed vertically upward, a rain cover must be installed.

4、 基础采用混凝土时,在安装时须用水平尺测其水平度,使机组固定于水平的基础上。机组与基础之间应有专用防震垫或用底脚螺栓。
4. When the foundation is made of concrete, the levelness must be measured with a level ruler during installation to fix the unit on a horizontal foundation. There shall be special shockproof pads or anchor bolts between the unit and the foundation.
5、 机组外壳必须有可靠的保护接地,对需要有中性点直接接地的发电机,则必须由专业人员进行中性点接地,并配备防雷装置,严禁利用市电的接地装置进行中性点直接接地。
5. The unit shell must have reliable protective grounding. For generators that need to have a neutral point directly grounded, the neutral point must be grounded by professionals and equipped with lightning protection devices. It is strictly prohibited to use the grounding device of mains power to directly ground the neutral point.
6、 发电机与市电的双向开关必须十分可靠,以防倒送电。双向开关的接线可靠性需经过当地供电部门的检验认可。
6. The two-way switch between the generator and the mains must be very reliable to prevent reverse power transmission. The wiring reliability of two-way switch shall be inspected and approved by local power supply department.
7、 起动电瓶的接线必须牢固。
7. The connection of starting battery must be firm.
以上就是为大家介绍的有关焦化气发电机组详细的介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以的态度,为您提供服务https://www.huannengpower.cn
The above is a detailed introduction to the coking gas generator set, and we hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude https://www.huannengpower.cn

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