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  • 氨蒸发器主要故障为堵塞或堵漏
  • 本站编辑:杭州宏力制冷配件厂发布日期:2018-09-04 11:49 浏览次数:

  关于氨蒸发器的检修工作,我们今天来简单介绍一下。氨蒸发器主要故障是:一管件内部存油和污物棍在一起堵塞管道;二管件外部因锈蚀和其他因素出现裂纹或针形小孔。

  As for the overhaul of ammonia evaporator, let's give a brief introduction today. The main faults of the ammonia evaporator are: oil and dirt sticks in one pipe block the pipe; cracks or needle-shaped holes in the outside of the second pipe due to rust and other factors.

  一、堵塞

  1. Blockage

  若蒸发器内存油和机械杂质混合,粘度较大阻塞管路,首先应进行热氨冲霜,若冲霜不能解决问题,应将蒸发器的氨抽千净,再用0.6MPa(表压)的压缩空气吹除。若吹除不解决问题。说明管内有人的阻塞物,如木塞、清洗管件用的砂布、棉纱等遗留在管件内。

  If the oil and mechanical impurities in the evaporator mix and the viscosity is high, the pipeline should be blocked first by hot ammonia defrosting, if defrosting can not solve the problem, the evaporator should be pumped a thousand net ammonia, and then 0.6 MPa (surface pressure) compressed air blowing off. If you blow it, you will not solve the problem. Explain that some blockage, such as wooden plug, abrasive cloth and cotton yarn used for cleaning pipe fittings, has been left in the pipe fittings.

  这种情况一般应做截管处理。但是为了减少截管的根数。应找到管内的阻塞处。可根据管子前后结霜情况、管内有液体流动声等节流现象来寻找阻塞处。找到阻塞处,截去管件,将阻塞物取出,再把管件焊好,经试压查漏合格后才能恢复蒸发器的使用。

  This kind of situation should generally be cut off. But in order to reduce the number of roots in the pipe. The obstruction in the tube should be found. The blockage can be found according to the frosting condition before and after the tube and the liquid flow sound in the pipe. Find the obstruction, cut off the pipe fittings, take out the obstruction, and then weld the pipe fittings, after pressure test to find the leakage qualified before resuming the use of the evaporator.

蒸发器

  二、堵漏

  Two, plugging the leak

  若为蒸发排管有泄漏,如在光滑墙管或顶管处,出现针形小孔,应进行焊补。如因生产任务忙,不能立即焊补,习在泄漏处堵上橡胶板,用管卡卡牢,待生产淡季时再进行焊补处理。若冷风机的翅片管有泄漏,其处理方法应是关闭冷风机的进液阀和回气阀,开启热氨冲霜回液阀和冲霜回液总阀,用循环桶或排液桶进行抽空,同时打开冲霜水,提高其压力,这样既抽得快,又抽得干净。不要用开回气阀抽空的方法,这一方法抽空时间长,而且有氨液很难拙干净。设备抽空后,可拆卸有关连接处接通大气,用电焊或气焊进行焊补。

  If there is leakage for evaporation drain pipe, such as in smooth wall pipe or pipe jacking, needle-shaped hole, should be welded. If the production task is busy, can not immediately weld repair, used to plug the leak in the rubber plate, with pipe jam, until production off-season welding treatment. If the finned tube of the air cooler leaks, the treatment method should be to close the inlet valve and the air return valve of the air cooler, open the hot ammonia defrosting return valve and the total defrosting return valve, use the circulating barrel or the discharging barrel to evacuate, and open the defrosting water at the same time to increase its pressure, so as to pump quickly and cleanly. Do not use the method of opening the return valve to evacuate, this method of evacuation time is long, and ammonia is difficult to clean clumsily. After the equipment is evacuated, the relevant connections can be dismantled and connected to the atmosphere and welded or welded by electric welding or gas welding.

  有的设备因阀门内部串漏,不能抽空,但能抽到大气压以下,这时可用尖冲子把针形小孔冲儿下,不向外漏氨时,可用电焊进行焊补。设备使用期在s年以内,而管件没有严重的锈蚀的情况下才可以这样处理,在处理时一定用电焊不能用气焊焊补。

  Some equipment because the valve internal leakage, can not be pumped, but can be pumped below atmospheric pressure, then can use a sharp punch to punch the pin-shaped hole, not to leakage ammonia outside, can be welded. The service life of the equipment is less than s years, and the pipe fittings without serious corrosion can be treated like this, in the treatment must be welded with electric welding can not be repaired with gas welding.


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