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  Natural gas compressor ÈÄ´Ü ¹è°ü ¹ëºêÀÇ shut-off time¿¡ µû¸¥ pressure surge °è»ê ¹®ÀÇ
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Á¦¸ñ°ú °°ÀÌ ±âü(°¡½º)°¡ È帣´Â ¹è°ü ³»¿¡¼­ ¹ëºêÀÇ Àá±â´Â ½Ã°£(shut-off time)¿¡ µû¸¥ pressure surge °è»ê¹ýÀ» ¹®Àǵ帳´Ï´Ù. (¹°·Ð ȸÀü±â±âÀÇ ±¸µ¿, Á¤Áö ¹× RPM Á¶Àý »óȲ¿¡¼­ ÁÖ·Î ¹ß»ýÇÏÁö¸¸ ¿©±â¼­´Â ÅäÃâ ¹è°ü ¹ëºêÀÇ shut-off¿¡ ´ëÇØ ¹®Àǵ帳´Ï´Ù)

Æò¼Ò ¹°/¾×ü ¹è°ü¿¡¼­ÀÇ water hammering °è»êÀº ÇÁ·Î±×·¥À» ÀÌ¿ëÇϰųª °£´ÜÇÑ ¼ö±â °è»êÀ¸·Î ÇØ°áÇØ¿Ô½À´Ï´Ù¸¸, »õ·Î¿î ÇÁ·ÎÁ§Æ®ÀÇ °í°´»ç¿¡¼­ Compressor ÈÄ´Ü ÅäÃâ ¹è°ü ¹ëºê°¡ shut-off µÇ´Â ½Ã°£¿¡ µû¸¥ pressure surge °è»ê¼­¸¦ ¿ä±¸ÇÏ¿´½À´Ï´Ù.
ÀÌ¿¡ ¿©·¯ ÀÎÅÍ³Ý »çÀÌÆ®³ª ÀÚ·áµéÀ» ã¾Æº¸¾Æµµ ±âü(ÇØ´ç ÇÁ·ÎÁ§Æ®¿¡¼­´Â 50 degC @ 10 bargÀÇ natural gas) ¹è°üÀÇ ÅäÃâÃø ¹ëºê shut-off¿¡ µû¸¥ pressure surge °è»ê¿¡ ´ëÇÑ ¸íÄèÇÑ ´äº¯À» ã¾Æº¸±â°¡ Èûµé¾ú½À´Ï´Ù. ±×·¸´Ù°í Æò¼Ò water hammeringÀ» ±¸Çϵí
P2 = 0.7 * V * L / t + P1  ------ (P2: increased pressure, P1: steady pressure)
°°Àº ½ÄÀ» ¾²ÀÚ´Ï ±âüÀÇ ºñÁß·®À̳ª ¾ÐÃ༺À» °í·ÁÇÏÁö ¾ÊÀº ÀϹÝÀûÀÎ water hammering ½ÄÀ» »ç¿ëÇÒ ÀÚ½ÅÀÌ ¾ø±¸¿ä.

Ȥ½Ã³ª gas compressor ÈÄ´ÜÀÇ pressure surge °è»ê½ÄÀ̶ó´øÁö Âü°í ÀÚ·á°¡ ÀÖÀ¸½Å ¼±/ÈĹè´ÔµéÀÌ °è½Ã¸é Á¶¾ð ºÎŹ µå¸³´Ï´Ù.

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Stefano    21-03-06 03:45
Valve Àü´ÜÀÎÁö ÈÄ´ÜÀÎÁö Á¤ÇØµÎ°í  ½Ã½ºÅÛ ºÎÇÇ¿Í »ç¿ëóÀÇ ºÎÇÏ°¡ Á¤ÇØÁ® ÀÖ´Â »óÅ¿¡¼­ ValveÀÇ À¯·®º¯È­¼Óµµ¿¡ ´ëÇÑ ½Ã½ºÅÛ(¿©±â¼­´Â ¹è°ü) ³»ÀÇ À¯·®º¯È­¿¡ µû¸¥ ½Ã½ºÅÛ³»ÀÇ ¸ô¼ö º¯È­¸¦ ¾Ð·Âº¯È­·Î ³ªÅ¸³»¸é µÉ °ÍÀ̳ª ¹è°üÀÇ °æ¿ì À¯Ã¼°¡ Èê·¯°¡´Â À§Ä¡¿¡ µû¶ó  ¾Ð·Âµµ ´Þ¶óÁö±â ¶§¹®¿¡  Dynamic Simulator¸¦ »ç¿ëÇÏÁö ¾Ê°í ¼ö°è»ê Çϱâ´Â ¾î·Á¿ï °ÍÀÔ´Ï´Ù.   

Process  Simulator¸¦ ÀÌ¿ëÇÏ¿© Ç®¾îº¸µµ·Ï Çϼ¼¿ä.
     
Àΰ£»þ¿À¹Ì johnkim247   21-03-12 14:36
Stefano´Ô²²

ÃâÀåÀ¸·Î ´äº¯ÀÌ ´Ê¾î Á˼ÛÇÕ´Ï´Ù.

Process simulator·Î Ç®¾îº¸·ÁÇßÀ¸³ª ÇØ´ç ½Ã½ºÅÛÀ» ±¸ÇöÇϱⰡ ¸Å¿ì ¾î·Á¿ö (ƯÈ÷ valve shut down time ¼³Á¤À» Àß ¸ð¸£°Ú³×¿ä) À¯Ã¼ Áö¹è¹æÁ¤½ÄÀ» ÀÌ¿ëÇÏ¿© ¼ö±â·Î Ç®¾îº¸·ÁÇÕ´Ï´Ù¸¸ À̵µ ½±Áö ¾ÊÀ» °Í °°½À´Ï´Ù.
ºñ¾ÐÃ༺ À¯Ã¼°¡ ¾Æ´Ñ ¾ÐÃ༺ À¯Ã¼¶ó È帧ÀÌ Â÷´ÜµÇ´Â ½ÃÁ¡¿¡ ¾Ð·ÂÆĸ¦ ±¸ÇÏ´Â °Íµµ ½±Áö¾Ê°í..ÀÏ´Ü µµÀüÇغ¸°í °á°ú°¡ ÁÁÀ¸¸é ´Ù½Ã ´äº¯ µå¸®°Ú½À´Ï´Ù.

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ÀåÇØ onni22   22-05-16 21:50
±×¸²ÀÌ Æ÷ÇԵǾî ÀÖ°í, °ü·Ã¼ö½Ä°ú »ùÇà °è»êµµ Æ÷ÇԵǾî ÀÖÀ¸´Ï Âü°í»ï¾Æ º¸½Ã¸é ÁÁÀ» °Í °°½À´Ï´Ù.
; È­°øÂÊ¿¡¼­´Â Steam hammering À̶ó´Â ´Ü¾î¸¦ »ç¿ëÇÏ´ÂÁö ¸ð¸£°Ú½À´Ï´Ù¸¸ ¿øÀÚ·Â/¹ßÀüÂÊ¿¡¼­´Â ¹è°ü °ÇÀü¼ºÀ» À§ÇØ °ËÅäÇÏ°ï ÇÕ´Ï´Ù.

https://www.researchgate.net/publication/286715951_Time_History_Steam_Hammer_Analysis_For_Critical_Hot_Lines_In_Thermal_Power_Plants


Water hammer, Surge¿Í´Â Ư¼ºÀÌ ´Ù¸£°Ô Ãʱâ Shut-down , Valve Closing ÀÌÈÄ¿¡ ±Þ°ÝÈ÷ ³»ºÎ ¾Ð·ÂÀÌ °¨¼ÒÇϱ⠶§¹®¿¡ (³í¹® ¾È¿¡ Trend Graph°¡ ÀÖÀ½) °£´ÜÈ÷ ¼ö°è»êÀ¸·Î °ËÅäÇÒ ¶§¿¡´Â ³»ºÎ¿¡ ³ª¿Í ÀÖ´Â ¼ö½Ä¿¡ Valve Closing Time°ú Á÷¼± ¹è°üÀÇ ±æÀÌ°¡ °¡Àå Å« ¿µÇâÀ» ³¢Ä¨´Ï´Ù. ½Ã½ºÅÛ ¼³°è°¡ ³¡³­ ½ÃÁ¡¿¡¼­´Â ¹ëºê°¡ ¾ó¸¶³ª »¡¸® ´ÝÈ÷´À³Ä¿¡ µû¸¥ °á°ú¹°À̱⿡ ÀÌ ºÎºÐÀ» ÁÖ¿ä Á¡°Ë Æ÷ÀÎÆ®·Î °¡Á®°©´Ï´Ù.

Water Surge¿Í ºñ±³Çϸé Compressible fluid´Â density°¡ ³·±â ¶§¹®¿¡ (~ 20ºÐÀÇ 1 ) »ó´ëÀûÀ¸·Î ¾Ð·Â»ó½ÂÀÌ Å©Áö ¾Ê½À´Ï´Ù.
   

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