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  Series Compressor Control °ü·Ã Áú¹®
  ±Û¾´ÀÌ : éÌÜó   °íÀ¯ID : yongbong     ³¯Â¥ : 16-09-06 11:11     Á¶È¸ : 5242    
±â¼ú ¹®¼­¸¦ Àд٠º¸´Ï ¾Æ·¡¿Í °°Àº ³»¿ëÀÌ ³ª¿É´Ï´Ù.
 
Compressors can be connected in series to increase their discharge pressure (compression ratio) or they can be connected in parallel to increase their flow capacity. Series compressors on the same shaft can usually be protected by a single anti-surge control system.
When driven by different shafts, they require separate anti-surge systems, although an overall surge bypass valve can be common to all surge controllers through the use of a high signal selector. This eliminates the interaction that otherwise would occur between surge valves, as the opening of a bypass around one stage not only would increase the flow through the higher stages but also would decrease it through the lower ones. In some installations, this interaction has been found to be of less serious consequence than the time delay caused by the use of a single overall bypass surge valve, which cannot quickly increase flow in the upper stages. In such installations it is best to duplicate the complete surge controls around each compressor in series.
 
series compressor·Î ±¸¼ºµÈ ½Ã½ºÅÛ¿¡¼­ °¢ Compressor°¡ Anti-Surge bypass valve¸¦ °¡Áö°í ÀÖ´Â °æ¿ì, Áß°£ stage¿¡ ÀÖ´Â anti-surge bypass valve°¡ ¿­¸®¸é ¾ÕµÚ StageÀÇ flow°¡ ¾î¶»°Ô º¯ÇÏ´ÂÁö¿¡ ´ëÇÑ ¼³¸íÀ¸·Î ÀÌÇص˴ϴÙ...
 
Á¦°¡ »ý°¢Çϱ⿡´Â higher stage (downstream)Àº flow°¡ °¨¼ÒÇÏ°í, lower stage (upstream)Àº º¯È­°¡ ¾øÀ» °ÍÀ¸·Î ¿¹»óµÇ´Âµ¥, À§ÀÇ ¼³¸íÀÌ ¸Â´Â °ÍÀϱî¿ä?

½ºÅ×Æijë Stefano   16-09-06 15:31
(Otherwise, Áï °³º° Anti-surge Valve°¡ ¾øÀ»°æ¿ì) ±×·¯Áö ¸»¾Æ¾ß Çϴµ¥  (Stage°£ Unbalancing Çö»óÀ¸·Î) ¼ø°£ÀûÀ¸·Î ¿ªÈ¿°ú¸¦ ³ªÅ¸³²À¸·Î½á ¾ÇÈ­µÉ ¼öµµ ÀÖ´Ù´Â °ÍÀ» ¼³¸íÇÑ °ÍÀÔ´Ï´Ù. ("would"°¡ ¿øÇÏÁö ¾Ê´Â ÀÏÀ» °íÁýÇÇ¿ö ÇÏ·ÁÇÑ´Ù´Â ´º¾Ó½º¸¦ °¡Áý´Ï´Ù.)

Series CompressorA,B°¡ º°µµÀÇ Driver A, B ·Î ±¸µ¿µÉ ¶§  B Compressor Áï, °í¾ÐÃø¿¡¼­ Overall Surge Valve¸¦ ÅëÇØ Kick Back µÈ Gas°¡ Driver A¿¡ÀÇÇØ ±¸µ¿µÇ´Â Compressor Suction¿¡ °ø±ÞÇÔÀ¸·Î½á ¼ø°£ÀûÀ¸·Î Compressor B¿¡ °ø±ÞÇÏ´Â °í¾ÐÃøÀ¸·ÎÀÇ À¯·®ÀÌ ´Ã°í (Àú¾Ð´Ü Surge Control Valve°¡ µ¿ÀÛÇÏÁö ¾ÊÀ½À¸·Î½á) Àú¾ÐÃø À¯·®ÀÌ ¿ÀÈ÷·Á ÁÙ¾îµå´Â Çö»óÀ» ¾ð±ÞÇÑ °ÍÀ¸·Î º¾´Ï´Ù.

À̸¦ ¹æÁöÇϱâ À§ÇØ Time Delayed Surge ControlÀ» µÎ°Å³ª °³º° Control ½Ã½ºÅÛÀ» µÐ´Ù´Â À̾߱âÁö¿ä.
éÌÜó yongbong   16-09-06 16:27
´äº¯ °¨»çÇÕ´Ï´Ù. ½ºÅ×Æijë´Ô ´äº¯ ³»¿ëÁß¿¡ ´Ù¼Ò ÀÌÇØ°¡ ¾È °¡´Â ºÎºÐÀÌ À־ ÀçÁú¹® µå¸³´Ï´Ù.
"°í¾ÐÃø¿¡¼­ Overall Surge Valve¸¦ ÅëÇØ Kick Back µÈ Gas°¡ Driver A¿¡ÀÇÇØ ±¸µ¿µÇ´Â Compressor Suction¿¡ °ø±ÞÇÔÀ¸·Î½á"
ÀÌ·¸°Ô ¸»¾¸ Çϼ̴µ¥¿ä, ÀÌ·¸´Ù¸é Compressor A¿¡ °ø±ÞµÇ´Â ¾çµµ Áõ°¡ÇÏ´Â °Í ¾Æ´Ñ°¡¿ä?

P.S.
À§ ¹®ÀåÀ» ´Ù½Ã º¸´Ï, ´õ´õ¿í Çò°¥·Á¼­ ¾îµð¼­ºÎÅÍ ¹®Á¦ÀÇ ½Ç¸¶¸®¸¦ Ç®¾î¾ß ÇÒÁö ³­°¨Çϳ׿ä...
½ºÅ×Æijë Stefano   16-09-07 11:42
(1) A, B°¡ °¢°¢ Àú¾Ð, °í¾ÐÀ¸·Î Á÷·Ä¿¬°áµÇ¾î ¿îÀüÇÏ°í ÀÖ´Ù°¡ BÃøÀÇ °í¾Ð°ú BÃøÀÇ Àú¾Ð°£ÀÇ ¾Ð·ÂºÒ±ÕÇüÀÌ ÀϾÀ» ¶§ Overall Bypass°¡ ¿­¸®¸é Àú¾ÐÃø Suction Drum¿¡¼­ÀÇ Settling Pressure°¡ ¿Ã¶ó°¡ Àú¾ÐÀ¸·Î ¿îÀüµÇ´Â A CompressorÀÇ ÈíÀÔ·®ÀÌ (Àá½Ãµ¿¾È) ´Ã¾î¼­ °í¾ÐÀ¸·Î ¿îÀüµÇ´Â B CompressorÂÊÀ¸·Î À¯·®À» ¸¹ÀÌ º¸³»Áֱ⵵ ÇÏ°í ÇÑÆíÀ¸·Î´Â AÀÇ Suction DrumÀÇ Pressure°¡ ¿Ã¶ó°¨À¸·Î ÀÎÇÏ¿© (Àá½Ãµ¿¾È) Àú¾ÐÃø Suction Guide VaneÀÌ ´ÝÈ÷´Â Çö»óÀÌ ÀϾ´Â ¾ÈÁ¤È­ ±â°£µ¿¾ÈÀÇ UnbalancingÀ» ¾ð±ÞÇÑ °ÍÀÔ´Ï´Ù.  Compressor A´Â A´ë·Î Suction¾Ð·ÂÀÌ ¿Ã¶ó°¡¸é Gas·®À» ÁÙÀ̱â À§ÇÏ¿© Suction Unloader¸¦ µ¿ÀÛ½ÃÅ°°Å³ª Guide VaneÀ» ÁÙÀÌ·Á´Â Çö»óÀÌ ÀϽÃÀûÀ¸·Î ³ªÅ¸³¯ °ÍÀ̶ó´Â °ÍÀ» ÀÚÃÊÁöÁ¾¾øÀÌ ¼³¸íÇÑ °ÍÀÌ¶ó¼­ ¼³¸í¿¡ ºñ¾àÀÌ µÈ °ÍÀÔ´Ï´Ù. 

(2) ´Ù´Ü CompressoreÀÇ Loading-Unloading Valve Plate°¡ ¼³Ä¡µÇ¾îÀÖ´Â °æ¿ì »ç¿ëó ºÎÇÏ°¡ ÁÙ¾î Discharge Pressure°¡ ¿Ã¶ó°¡¸é CompressorÀÇ Suction Unloader°¡ Valve Plate¸¦ µé¾î¿Ã·Á Àú¾Ð´ÜÃø¿¡ Gas°¡ ÈíÀÔµÇÁö ¾Ê¾Æ Àú¾Ð´ÜµéÀÇ ¾Ð·ÂÀÌ ³·¾ÆÁ® ¼ø°£ÀûÀ¸·Î Compressor ShaftÀÇ UnbalancingÀÌ ÀϾ°Ô µÇ´Âµ¥ ÀÌ¿Í°°Àº ¼ø°£Àû Dynamic UnbalancingÀ̶ó°í º¸¸é µÉ °ÍÀÔ´Ï´Ù.

(3) ÀÌ·± °æ¿ì¿Í °°Àº Dynamic UnbalancingÀ» ¹æÁöÇϱâ À§ÇØ º°µµÀÇ Surge Bypass¸¦ µÎ´Â °ÍÀ» ±ÇÀåÇÏ´Â ³»¿ëÀÔ´Ï´Ù.
   

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