{"id":2065,"date":"2018-08-11T14:35:56","date_gmt":"2018-08-11T11:35:56","guid":{"rendered":"http:\/\/mekanikelektriktesisat.com\/?p=2065"},"modified":"2018-08-11T14:35:56","modified_gmt":"2018-08-11T11:35:56","slug":"vanalar","status":"publish","type":"post","link":"https:\/\/benga.pro\/index.php\/2018\/08\/11\/vanalar\/","title":{"rendered":"Vanalar"},"content":{"rendered":"

Vanalar, tesisat sekt\u00f6r\u00fcn\u00fcn vazge\u00e7ilmez elemanlar\u0131d\u0131r. Ak\u0131\u015fkanlar\u0131n ge\u00e7i\u015fini sa\u011flamak veya durdurmak i\u00e7in, debisini ayarlamak i\u00e7in, bas\u0131nc\u0131n\u0131 ayarlamak i\u00e7in vanalar kullan\u0131l\u0131r. Yaz\u0131m\u0131zda, tesisat sekt\u00f6r\u00fcnde kullan\u0131lan temel vana tiplerini ele alaca\u011f\u0131z.<\/p>\n

\n

1. S\u00dcRG\u00dcL\u00dc (GATE) VANA<\/h4>\n

S\u00fcrg\u00fcl\u00fc vanalar; ak\u0131\u015fkan ge\u00e7i\u015fini, iki s\u0131zd\u0131rmazl\u0131k halkas\u0131 aras\u0131nda, ge\u00e7i\u015f y\u00f6n\u00fcne dik olarak kayan bir diskle (s\u00fcrg\u00fc ile) kapat\u0131p, a\u00e7arak g\u00f6revlerini yerine getirirler. S\u00fcrg\u00fc; tek par\u00e7a olabilece\u011fi gibi, \u00e7ok par\u00e7al\u0131 da olabilir. Tam a\u00e7\u0131k veya tam kapal\u0131 olarak \u00e7al\u0131\u015fmalar\u0131 tercih edilir. Hassas ak\u0131\u015f kontrol\u00fc i\u00e7in uygun de\u011fillerdir. Son y\u0131llarda kullan\u0131mlar\u0131 giderek azalmaktad\u0131r.<\/p>\n

\"gateValve.gif\"
\n\u00dcst\u00fcnl\u00fckleri:<\/strong>
\n– Tam a\u00e7\u0131k vana, ak\u0131\u015f i\u00e7in direnci olduk\u00e7a d\u00fc\u015f\u00fck, d\u00fczg\u00fcnce bir ge\u00e7i\u015f sa\u011flar.
\n– Her iki taraftan ak\u0131\u015f i\u00e7in de kullan\u0131labilirler.
\n– Vana herhangi bir konumda monte edilebilir. Ancak, milin yere dik ve volan\u0131n \u00fcstte olmas\u0131 tercih edilir.
\n– B\u00fcy\u00fck anma \u00f6l\u00e7\u00fclerinde bile k\u0131sa vana boyu s\u00f6z konusudur.
\n– Ucuzdurlar ve rahat bulunabilirler.
\n– Y\u00fcksek bas\u0131n\u00e7lara uygun tipleri vard\u0131r.
\n– Yang\u0131n emniyetli veya d\u00fc\u015f\u00fck s\u0131cakl\u0131klara uygun tipleri vard\u0131r.<\/p>\n

Zay\u0131f Y\u00f6nleri:<\/strong>
\n– Hassas ak\u0131\u015f kontrol\u00fc i\u00e7in uygun de\u011fillerdir, \u00e7\u00fcnk\u00fc;ak\u0131\u015f\u0131n k\u0131s\u0131lmas\u0131 ile milin hareketi aras\u0131nda belirli bir orant\u0131 yoktur. Vana, yakla\u015f\u0131k %75 kapanana kadar, ancak \u00e7ok d\u00fc\u015f\u00fck oranda bir ak\u0131\u015f k\u0131s\u0131lmas\u0131 sa\u011flanabilir. Tam a\u00e7\u0131k veya tam kapal\u0131 olarak \u00e7al\u0131\u015fmalar\u0131 tercih edilir. Kontrol i\u00e7in yar\u0131m a\u00e7\u0131k tutuldu\u011funda, s\u00fcrg\u00fc titre\u015ferek g\u00fcr\u00fclt\u00fc \u00e7\u0131kar\u0131p, sitlere \u00e7arpabilir.
\n– Tam s\u0131zd\u0131rmazl\u0131k istenen tesisatlar i\u00e7in uygun de\u011fildir.
\n– Vana y\u00fcksekli\u011fi, di\u011fer tip vanalar i\u00e7inde en y\u00fcksek olan\u0131d\u0131r. Y\u00fckseklikte \u00e7ok yer tutar.
\n– Uzun strok y\u00fcz\u00fcnden a\u00e7ma kapama s\u00fcreleri uzar.
\n– \u00d6l\u00fc hacim i\u00e7ermektedirler. Vana i\u00e7inde kal\u0131nt\u0131lar birikebilir. Bu kal\u0131nt\u0131 birikimi, vanan\u0131n \u00e7al\u0131\u015fmas\u0131n\u0131 engelleyecek boyutta olabilir. Bak\u0131m ihtiyac\u0131 fazlad\u0131r.
\n– S\u0131zd\u0131rmazl\u0131k y\u00fczeylerinin mekanik zorlanmas\u0131 \u00f6nem ta\u015f\u0131r. Kapama sonlar\u0131nda ve a\u00e7ma s\u0131ras\u0131nda, bas\u0131n\u00e7 dengesi sa\u011flanana kadar ( yakla\u015f\u0131k %10 a\u00e7maya kadar) \u00e7\u0131k\u0131\u015f taraf\u0131nda kalan s\u0131zd\u0131rmazl\u0131k y\u00fczeyi s\u00fcrt\u00fcnme ve a\u015f\u0131nma etkisinde kal\u0131r. S\u0131k a\u00e7ma kapama i\u00e7in uygun de\u011fildir.
\n– Esneme kabiliyeti olmayan tek par\u00e7a s\u00fcrg\u00fc ile s\u0131cak ak\u0131\u015fkan ge\u00e7en bir tesisatta kapatma yap\u0131ld\u0131\u011f\u0131nda, s\u00fcrg\u00fc ak\u0131\u015f\u0131n biraz d\u0131\u015f\u0131nda kald\u0131\u011f\u0131 i\u00e7in nispeten so\u011fuk olarak yuvas\u0131na oturur. Ak\u0131\u015f kesildi\u011fi i\u00e7in \u00e7\u0131k\u0131\u015f taraf\u0131 so\u011fumaya ba\u015flar, g\u00f6vde kas\u0131l\u0131r ve s\u00fcrg\u00fc s\u0131k\u0131\u015f\u0131r. A\u00e7mak i\u00e7in a\u015f\u0131r\u0131 kuvvet uygulanmas\u0131 gerekir. S\u0131k\u0131\u015fm\u0131\u015f par\u00e7an\u0131n s\u00fcrt\u00fcnerek a\u00e7\u0131lmas\u0131, s\u0131zd\u0131rmazl\u0131k y\u00fczeylerinde bozulmalara yol a\u00e7ar. Bu da s\u0131zd\u0131rma, sit y\u00fczeyinin erozyonu ve sonu\u00e7ta b\u00fcy\u00fck ka\u00e7aklara sebep olur.
\n– Yar\u0131m a\u00e7\u0131k pozisyonda, debi y\u00fcksek ise, s\u00fcrg\u00fc titre\u015fmeye ve g\u00fcr\u00fclt\u00fc ile yan sitlere \u00e7arpmaya ba\u015flar. Bu da s\u0131zd\u0131rmazl\u0131k y\u00fczeylerinde bozulmalara yol a\u00e7ar.<\/p>\n

Ak\u0131\u015f Y\u00f6n\u00fc:<\/strong>
\nHer iki y\u00f6nde de m\u00fcmk\u00fcnd\u00fcr.<\/p>\n

\n

2. OTURMALI T\u0130P (GLOB) VANA<\/h4>\n

Oturmal\u0131 tip (Glob) vanalar; bir milin ucuna ba\u011fl\u0131 klapenin, ak\u0131\u015fkan ge\u00e7i\u015f deli\u011finin \u00fcst\u00fcne oturtulmas\u0131 veya kald\u0131r\u0131lmas\u0131 ile, ak\u0131\u015fkan ge\u00e7i\u015fini kesip, a\u00e7arak g\u00f6revlerini yerine getirirler. Klapeler, normalde bir tabak \u015feklindedir. Kontrol vanalar\u0131nda,
\nklapelerin u\u00e7lar\u0131nda, ge\u00e7i\u015f deli\u011finin i\u00e7ine uzanan,parabolik \u00e7\u0131k\u0131nt\u0131lar bulunur. Glob vanalar klape tipine ba\u011fl\u0131 olarak, farkl\u0131 ak\u0131\u015f karakteristi\u011fine sahip olurlar.<\/p>\n

\"globeValve.gif\"<\/p>\n

\u00dcst\u00fcnl\u00fckleri:<\/strong><\/p>\n

– Hassas ak\u0131\u015f kontrol\u00fc sa\u011flarlar.
\n– Klapenin, sit ile s\u00fcrt\u00fcnmesiz, oturarak temas\u0131 ile iyi bir s\u0131zd\u0131rmazl\u0131k sa\u011flan\u0131r.
\n– Y\u00fcksek bas\u0131n\u00e7 ve s\u0131cakl\u0131klara uygun tipleri vard\u0131r.
\n– Gaz ak\u0131\u015fkanlar i\u00e7in de uygundurlar.
\n– \u00c7ok s\u0131k ve \u00e7ok say\u0131da a\u00e7\u0131l\u0131p, kapanmaya uygundurlar.
\n– S\u00fcrg\u00fcl\u00fc vanalara g\u00f6re, mil klapeyi do\u011frudan sitin \u00fczerine bast\u0131rd\u0131\u011f\u0131 i\u00e7in, bu kuvvet uygulamas\u0131, s\u0131zd\u0131rmazl\u0131\u011f\u0131 olumlu etkilemektedir. Bu y\u00fczden, \u00f6zellikle atmosfere a\u00e7\u0131k tehlike yaratabilecek y\u00fcksek bas\u0131n\u00e7l\u0131 ak\u0131\u015f\u0131n s\u00f6z konusu oldu\u011fu durumlarda, kapama vanas\u0131 olarak S\u00fcrg\u00fcl\u00fc vana yerine, Glob vanalar tercih edilmektedir.<\/p>\n

Zay\u0131f Y\u00f6nleri:<\/strong>
\n– Yap\u0131lar\u0131 itibar\u0131 ile bas\u0131n\u00e7 kay\u0131plar\u0131 fazlad\u0131r.
\n– \u00d6l\u00fc hacim i\u00e7ermektedirler. Vana i\u00e7inde kal\u0131nt\u0131lar birikebilir.
\n– Ak\u0131\u015f, sadece vana \u00fcst\u00fcnde belirtilmi\u015f y\u00f6nde m\u00fcmk\u00fcnd\u00fcr. \u0130ki y\u00f6nl\u00fc \u00e7al\u0131\u015fmaya uygun de\u011fildir.
\n– B\u00fcy\u00fck anma \u00f6l\u00e7\u00fclerinde, a\u00e7ma kapama miline \u00e7ok b\u00fcy\u00fck kuvvetler etkimektedir. Bu kuvvet, kapamay\u0131 zorla\u015ft\u0131rmaktad\u0131r. B\u00fcy\u00fck debilerin kontrol\u00fc s\u00f6z konusu oldu\u011funda; ak\u0131\u015f\u0131 iki veya daha fazla k\u00fc\u00e7\u00fck hatta ay\u0131rmak ve k\u00fc\u00e7\u00fck Glob vanalar kullanabilmek, genelde uygulananbir y\u00f6ntemdir.<\/p>\n

Ak\u0131\u015f Y\u00f6n\u00fc:<\/strong>
\nVanan\u0131n \u00fcst\u00fcnde g\u00f6sterilir. Aksi y\u00f6nde ak\u0131\u015f do\u011fru de\u011fildir.<\/p>\n

\n

3. P\u0130STONLU VANA<\/h4>\n

Pistonlu vanalar; bir milin ucuna ba\u011fl\u0131 pistonun, ak\u0131\u015fkan ge\u00e7i\u015f deli\u011fine yerle\u015ftirilmi\u015f, metal olmayan conta paketleri i\u00e7inden ge\u00e7irilip, indirilip, kald\u0131r\u0131lmas\u0131 ile ak\u0131\u015fkan ge\u00e7i\u015fini kesip, a\u00e7arak g\u00f6revlerini yerine getirirler.<\/p>\n

\"pistonValve.gif\"<\/p>\n

\u00dcst\u00fcnl\u00fckleri:<\/strong>
\n– Ak\u0131\u015f kontrol\u00fc sa\u011flarlar.
\n– Metal pistonun, metal olmayan conta paketlerine \u00e7evresel s\u0131k\u0131 temas\u0131 ile iyi bir s\u0131zd\u0131rmazl\u0131k sa\u011flan\u0131r.
\n– Pistonun \u00e7evresi, conta paketleri taraf\u0131ndan a\u00e7ma, kapama s\u0131ras\u0131nda, s\u0131yr\u0131larak ilerledi\u011fi i\u00e7in, kat\u0131 partik\u00fcl i\u00e7eren s\u0131v\u0131lar i\u00e7in de kullan\u0131labilir.
\n– Gaz ak\u0131\u015fkanlar i\u00e7in de uygundurlar.
\n– Pistonlar metal olmayan contalar i\u00e7inde hareket etti\u011fi i\u00e7in, kolay kolay a\u015f\u0131nmaz. A\u015f\u0131nan contalar ise kolayca yenilenebilir.
\nZay\u0131f Y\u00f6nleri:<\/strong>
\n– Yap\u0131lar\u0131 itibar\u0131 ile bas\u0131n\u00e7 kay\u0131plar\u0131 fazlad\u0131r.
\n– \u00d6l\u00fc hacim i\u00e7ermektedirler. Vana i\u00e7inde kal\u0131nt\u0131lar birikebilir.
\n– B\u00fcy\u00fck anma \u00f6l\u00e7\u00fclerinde, a\u00e7ma kapama miline \u00e7ok b\u00fcy\u00fck kuvvetler etkimektedir. Bu kuvvet, kapamay\u0131 zorla\u015ft\u0131rmaktad\u0131r. DN 65\u2019ten b\u00fcy\u00fck anma \u00f6l\u00e7\u00fclerinde\u201cDenge pistonlu\u201c tip vanaya ge\u00e7mek uygundur.<\/p>\n

Ak\u0131\u015f Y\u00f6n\u00fc:<\/strong>
\nVana \u00fcst\u00fcnde belirtilmi\u015ftir. Aksi y\u00f6nde ak\u0131\u015f tavsiye edilmez.<\/p>\n

\n

4. D\u0130YAFRAMLI (MEMBRANLI) VANA<\/h4>\n

Diyafram vanalar; bir membran\u0131n ak\u0131\u015f y\u00f6n\u00fcne dik olarak hareket ettirilerek, bir s\u0131zd\u0131rmazl\u0131k y\u00fczeyine oturtulmas\u0131 ile g\u00f6revlerini yerine getirirler. G\u00f6vdesi kaplanmam\u0131\u015f vanalarda, ak\u0131\u015fkan ge\u00e7i\u015f kesiti, anma \u00f6l\u00e7\u00fcs\u00fc ile belirlenmi\u015f kesitin % 50\u2019sine kadar, g\u00f6vdesi kaplanm\u0131\u015f vanalarda ise % 35\u2019ine kadar k\u00fc\u00e7\u00fclebilir.<\/p>\n

\"diaphragmValve.gif\"<\/p>\n

\u00dcst\u00fcnl\u00fckleri:<\/strong>
\n– De\u011fi\u015fken ama\u00e7lar i\u00e7in universal olarak kullan\u0131labilir.
\n– En temizden, \u00e7ok kirli ak\u0131\u015fkanlara kadar geni\u015f bir yelpaze i\u00e7in uygundurlar.
\n– Ak\u0131\u015fa dik kesit de\u011fi\u015fimi sayesinde ayar i\u00e7in de uygundurlar.
\n– Montaj boyutlar\u0131 k\u00fc\u00e7\u00fckt\u00fcr.
\n– G\u00fcvenilir bir s\u0131zd\u0131rmazl\u0131k sa\u011flarlar.
\n– \u00c7ok y\u00fcksek say\u0131da a\u00e7ma, kapama yapmaya uygundurlar.
\n– \u00d6l\u00fc hacimleri yoktur. Sterilize edilebilirler.
\n– Ak\u0131\u015f i\u00e7in uygun bir i\u00e7 geometri s\u00f6z konusudur.
\n– Membran\u0131n kendisi ayn\u0131 zamanda d\u0131\u015f ortama ka\u00e7aklar\u0131da engelledi\u011fi i\u00e7in mil salmastras\u0131na gerek yoktur.
\nZay\u0131f Y\u00f6nleri:<\/strong>
\n– Ancak, d\u00fc\u015f\u00fck s\u0131cakl\u0131klarda ve bas\u0131n\u00e7larda kullan\u0131labilirler.
\n– \u0130\u015fletme bas\u0131nc\u0131 olarak, vana giri\u015f ve \u00e7\u0131k\u0131\u015f bas\u0131n\u00e7lar\u0131 toplam\u0131n\u0131 almak s\u00f6z konusudur.<\/p>\n

Ak\u0131\u015f Y\u00f6n\u00fc:<\/strong>
\nBelirtilmemi\u015ftir. Her iki y\u00f6nde kullan\u0131labilir.<\/p>\n

\n

4. P\u0130N\u00c7 VANA<\/h4>\n

Pin\u00e7 vana, tam ge\u00e7i\u015fli bir vana olup yap\u0131s\u0131ndaki elastik kau\u00e7u\u011fun bir mekanizmayla s\u0131k\u0131\u015ft\u0131r\u0131larak ak\u0131\u015fkan\u0131n ge\u00e7i\u015finin sa\u011flanmas\u0131 yada durdurulmas\u0131 ilkesine dayan\u0131r.<\/p>\n

\"pinchValve.gif\"<\/p>\n

\u00dcst\u00fcnl\u00fckleri<\/strong><\/p>\n

– Bak\u0131m\u0131 kolayd\u0131r
\n– Yap\u0131sal olarak hafif a\u011f\u0131rl\u0131ktad\u0131r
\n– T\u0131kanma olmaz ve \u00f6l\u00fc b\u00f6lge yoktur
\n– H\u0131zl\u0131ca a\u00e7\u0131p kapat\u0131labilir
\n– Pn\u00f6matik kontrolde az havaya ihtiya\u00e7 duyar
\n– Kendi kendini temizleyebilir
\n– \u00c7ok iyi s\u0131zd\u0131rmazl\u0131k sa\u011flar
\n– Az s\u00fcrt\u00fcnme ve bas\u0131n\u00e7 kayb\u0131 olur
\n– Mekanik par\u00e7a olmad\u0131\u011f\u0131ndan ya\u011flama, conta gibi par\u00e7alara ihtiya\u00e7lar\u0131 yoktur.<\/p>\n

Zay\u0131f Y\u00f6nleri<\/strong><\/p>\n

– S\u0131cakl\u0131k a\u00e7\u0131s\u0131ndan y\u00fcksek de\u011ferlere \u00e7\u0131kamaz
\n– \u00c7al\u0131\u015fma bas\u0131nc\u0131 a\u00e7\u0131s\u0131ndan k\u0131s\u0131tl\u0131d\u0131r.
\n– Yerine g\u00f6re vanan\u0131n boyu s\u0131k\u0131nt\u0131 yaratabilir.<\/p>\n

Ak\u0131\u015f Y\u00f6n\u00fc:<\/strong>
\nBelirtilmemi\u015ftir. Her iki y\u00f6nde kullan\u0131labilir.<\/p>\n

\n

5. K\u00dcRESEL VANA<\/h4>\n

K\u00fcresel vanalar; bir milin ucuna yerle\u015ftirilmi\u015f ortas\u0131nda bir veya birden fazla delik olan, \u00e7o\u011funluklaelastomer (\u0130htiyaca g\u00f6re metal de olabilir) iki conta aras\u0131nda dengelenmi\u015f bir k\u00fcrenin, ak\u0131\u015fkan ge\u00e7i\u015f delik ekseni \u00fczerinde 90\u00ba d\u00f6nd\u00fcr\u00fclmesi ve deli\u011fin (deliklerin) ge\u00e7i\u015fe a\u00e7\u0131k veya kapal\u0131 konuma getirilmesi ile ak\u0131\u015fkan ge\u00e7i\u015fini kesip, a\u00e7arak g\u00f6revlerini yerine getirirler. Tam a\u00e7\u0131k veya tam kapal\u0131 olarak \u00e7al\u0131\u015fmalar\u0131 tercih edilir. Hassas ak\u0131\u015f kontrol\u00fc i\u00e7in uygun de\u011fillerdir.<\/p>\n

\"ballValve.gif\"<\/p>\n

\u00dcst\u00fcnl\u00fckleri:<\/strong>
\n– Ak\u0131\u015fkan\u0131n serbest, rahat ge\u00e7i\u015fini sa\u011flarlar.
\n– \u00d6zellikle 2 yollu vanalarda bas\u0131n\u00e7 d\u00fc\u015f\u00fcm\u00fc \u00e7ok d\u00fc\u015f\u00fckt\u00fcr. Armat\u00fcr ak\u0131\u015f direncinin en d\u00fc\u015f\u00fck oldu\u011fu vana tiplerindendir.
\n– Kullan\u0131mlar\u0131 rahatt\u0131r.
\n– Akt\u00fcat\u00f6rl\u00fc olarak kullan\u0131labilirler.
\n– Gaz ak\u0131\u015fkanlar i\u00e7in de uygundurlar. \u00d6zellikle elastomer contalar\u0131n kullan\u0131lmas\u0131 ile \u201c0 ka\u00e7ak\u201d sa\u011flanabilmektedir.
\n– Vanan\u0131n her iki y\u00f6n\u00fcnden de ak\u0131\u015f m\u00fcmk\u00fcnd\u00fcr.
\nZay\u0131f Y\u00f6nleri:<\/strong>
\n– Yap\u0131lar\u0131 sebebi ile a\u011f\u0131rl\u0131klar\u0131 fazlad\u0131r.
\n– Anma \u00f6l\u00e7\u00fcs\u00fc b\u00fcy\u00fcd\u00fck\u00e7e fiyatlar\u0131 nispi olarak pahal\u0131la\u015fmaktad\u0131r.
\n– K\u00fcre ve g\u00f6vde i\u00e7 bo\u015flu\u011fu aras\u0131nda \u00f6l\u00fc hacim s\u00f6z konusudur.
\n– Ani a\u00e7ma kapama ko\u00e7 darbeleri yaratabilir.
\n– Elastomer contal\u0131 vanalarda, elastomerin s\u0131cakl\u0131k dayan\u0131m\u0131na ba\u011fl\u0131 olarak, nispeten d\u00fc\u015f\u00fck \u00e7al\u0131\u015fma s\u0131cakl\u0131klar\u0131 s\u00f6z konusudur.<\/p>\n

Ak\u0131\u015f Y\u00f6n\u00fc:<\/strong>
\n\u0130ki y\u00f6nl\u00fc kesme vanalar\u0131nda her iki y\u00f6nde de ak\u0131\u015f m\u00fcmk\u00fcnd\u00fcr. 3 ve 4 yollu vanalarda, ak\u0131\u015f y\u00f6n\u00fc belirtilmektedir.<\/p>\n

\n

6. KELEBEK VANA<\/h4>\n

Kelebek vanalar; merkezinden veya eksantrik olarak yataklanm\u0131\u015f d\u00fcz bir diskin, ak\u0131\u015fkan ge\u00e7i\u015f deli\u011fi ortas\u0131nda 90\u00ba d\u00f6nd\u00fcr\u00fclmesi ile ak\u0131\u015fkan ge\u00e7i\u015fini kesip, a\u00e7arak g\u00f6revlerini yerine getirirler. Hassas ak\u0131\u015f kontrol\u00fc i\u00e7in uygun de\u011fillerdir. Kontrol i\u00e7in kullan\u0131lmalar\u0131 gerekti\u011finde; klapenin ancak 15\u00ba ile 75\u00ba aras\u0131nda hareket sahas\u0131nda kontrol m\u00fcmk\u00fcnd\u00fcr.<\/p>\n

\"butterflyValve.gif\"<\/p>\n

\u00dcst\u00fcnl\u00fckleri:<\/strong>
\n– Hafiftirler. Montaj boylar\u0131 k\u0131sad\u0131r.
\n– Belirli b\u00fcy\u00fckl\u00fckten sonra maliyeti d\u00fc\u015f\u00fcr\u00fcrler.
\n– A\u00e7\u0131k konumlar\u0131nda ak\u0131\u015fkan kal\u0131nt\u0131s\u0131 olu\u015fmaz veya \u00e7ok az olu\u015fur.
\n– Rahat monte edilirler.
\n– Bak\u0131m ihtiya\u00e7lar\u0131 azd\u0131r.
\n– Ak\u0131\u015fkan ile temas eden k\u0131s\u0131mlar\u0131 azd\u0131r.
\n– Ak\u0131\u015fkan\u0131n nispeten serbest, rahat ge\u00e7i\u015fini sa\u011flarlar.
\n– Kullan\u0131mlar\u0131 rahatt\u0131r.
\n– Akt\u00fcat\u00f6rl\u00fc olarak kullan\u0131labilirler.
\nZay\u0131f Y\u00f6nleri:<\/strong>
\n– Y\u00fcksek bas\u0131n\u00e7lar i\u00e7in uygun de\u011fildir.
\n– Ani a\u00e7ma kapama ko\u00e7 darbeleri yaratabilir.
\n– Elastomer kaplamal\u0131 vanalarda, elastomerin s\u0131cakl\u0131k dayan\u0131m\u0131na ba\u011fl\u0131 olarak, nispeten d\u00fc\u015f\u00fck \u00e7al\u0131\u015fma s\u0131cakl\u0131klar\u0131 s\u00f6z konusudur.<\/p>\n

Ak\u0131\u015f Y\u00f6n\u00fc:<\/strong>
\nMerkez yatakl\u0131 vanalarda her iki y\u00f6nde de ak\u0131\u015f m\u00fcmk\u00fcnd\u00fcr. Eksantrik yataklamal\u0131 vanalarda ak\u0131\u015f y\u00f6n\u00fc belirtilmelidir.<\/p>\n

\n

7. PLUG (TAPALI) VANA<\/h4>\n

Tapal\u0131 vanalar; ak\u0131\u015f eksenine dik konik veya silindirik bir yuvaya oturtulmu\u015f ve ortas\u0131 delik konik veya silindirik bir par\u00e7an\u0131n, 90\u00ba d\u00f6nd\u00fcr\u00fclmesi ve deli\u011fin (deliklerin) ge\u00e7i\u015fe a\u00e7\u0131k veya kapal\u0131 konuma getirilmesi ile ak\u0131\u015fkan ge\u00e7i\u015fini kesip, a\u00e7arak g\u00f6revlerini yerine getirirler. Konik tapal\u0131 vanalar daha \u00e7ok kullan\u0131lmaktad\u0131r. S\u0131zd\u0131rmazl\u0131k tapan\u0131n yata\u011f\u0131n i\u00e7ine bast\u0131r\u0131lmas\u0131 ve uygun ya\u011flay\u0131c\u0131 ara malzeme kullan\u0131larak sa\u011flan\u0131r. Tam a\u00e7\u0131k veya tam kapal\u0131 olarak \u00e7al\u0131\u015fmalar\u0131 tercih edilir. Delikler, yuvarlak kesitli olabildi\u011fi gibi,daha k\u00fc\u00e7\u00fck g\u00f6vde ile ge\u00e7i\u015f kesitini koruyabilmek i\u00e7in; silindirik tapal\u0131 vanalarda dikd\u00f6rtgen, konik vanalarda da trapez olabilir. Bu kesitler yuvarlak kesitlere g\u00f6re diren\u00e7 fakt\u00f6r\u00fcn\u00fc az da olsa artt\u0131rmaktad\u0131r. Tapal\u0131 vanalar genelde terk edilmekte olan bir vana tipidir.<\/p>\n

\"plugValve.gif\"<\/p>\n

\u00dcst\u00fcnl\u00fckleri:<\/strong>
\n– Ak\u0131\u015fkan\u0131n serbest, rahat ge\u00e7i\u015fini sa\u011flarlar.
\n– \u00d6zellikle 2 yollu vanalarda bas\u0131n\u00e7 d\u00fc\u015f\u00fcm\u00fc d\u00fc\u015f\u00fckt\u00fcr.Armat\u00fcr ak\u0131\u015f direncinin d\u00fc\u015f\u00fck oldu\u011fu vana tiplerindendir.
\n– Kullan\u0131mlar\u0131 rahatt\u0131r.
\n– Akt\u00fcat\u00f6rl\u00fc olarak kullan\u0131labilirler.
\n– Hat \u00fczerinde vana g\u00f6vdesi s\u00f6k\u00fclmeden bak\u0131m, tamiratyapmak m\u00fcmk\u00fcnd\u00fcr.
\n– Yang\u0131n emniyetli, y\u00fcksek ve d\u00fc\u015f\u00fck s\u0131cakl\u0131klara uygun tipleri vard\u0131r.
\n– Tapa ve yuvas\u0131 aras\u0131nda \u00f6l\u00fc hacim yoktur.
\n– Vanan\u0131n her iki y\u00f6n\u00fcnden de ak\u0131\u015f m\u00fcmk\u00fcnd\u00fcr.
\nZay\u0131f Y\u00f6nleri:<\/strong>
\n– Yap\u0131lar\u0131 sebebi ile a\u011f\u0131rl\u0131klar\u0131 fazlad\u0131r.
\n– Anma \u00f6l\u00e7\u00fcs\u00fc b\u00fcy\u00fcd\u00fck\u00e7e fiyatlar\u0131 nispi olarak pahal\u0131la\u015fmaktad\u0131r.
\n– Ani a\u00e7ma kapama ko\u00e7 darbeleri yaratabilir.
\n– Metal, metale s\u0131zd\u0131rmazl\u0131k sa\u011fland\u0131\u011f\u0131ndan malzeme a\u015f\u0131nmas\u0131 fazlad\u0131r. S\u0131zd\u0131rmaz \u00f6zelliklerini \u00e7abuk kaybederler.<\/p>\n

Ak\u0131\u015f Y\u00f6n\u00fc: <\/strong>
\n\u0130ki y\u00f6nl\u00fc vanalarda her iki y\u00f6nde de ak\u0131\u015f m\u00fcmk\u00fcnd\u00fcr. 3 ve 4 yollu vanalarda, ak\u0131\u015f y\u00f6n\u00fc belirtilmektedir.<\/p>\n

\n

<\/h3>\n

8. VANA T\u0130P\u0130 SE\u00c7\u0130M TABLOSU<\/strong><\/h4>\n

 <\/p>\n

Her vanan\u0131n kendine has art\u0131lar\u0131 ve eksileri vard\u0131r.\u00a0 \u0130htiyac\u0131n\u0131za hitap eden vana tipini se\u00e7mek i\u00e7in a\u015fa\u011f\u0131daki tablodan faydalanabilirsiniz. Her bir kritere 1 ila 3 aras\u0131nda beklentinizi kar\u015f\u0131layacak \u015fekilde not vererek ihtiyac\u0131n\u0131za en uygun vanay\u0131 tespit edebilirsiniz.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Kriterler<\/strong><\/td>\nGlob Vana<\/strong><\/td>\nS\u00fcrg\u00fcl\u00fc Vana<\/strong><\/td>\nKelebek Vana<\/strong><\/td>\nK\u00fcresel Vana<\/strong><\/td>\nKonik Vana<\/strong><\/td>\nDiyafram Vana<\/strong><\/td>\nPistonlu Vana<\/strong><\/td>\n<\/tr>\n
S\u0131zd\u0131rmazl\u0131k<\/td>\n3<\/td>\n3<\/td>\n2<\/td>\n1<\/td>\n1<\/td>\n1<\/td>\n1<\/td>\n<\/tr>\n
K\u0131sma, Ayar imkan\u0131<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n3<\/td>\n3<\/td>\n2<\/td>\n2<\/td>\n<\/tr>\n
Korozyana Dayan\u0131m<\/td>\n2<\/td>\n2<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n1<\/td>\n2<\/td>\n<\/tr>\n
Bas\u0131n\u00e7 Kayb\u0131<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n1<\/td>\n1<\/td>\n1<\/td>\n3<\/td>\n<\/tr>\n
Yer ihtiyac\u0131<\/td>\n3<\/td>\n2<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n3<\/td>\n3<\/td>\n<\/tr>\n
A\u011f\u0131rl\u0131k<\/td>\n3<\/td>\n2<\/td>\n1<\/td>\n3<\/td>\n3<\/td>\n3<\/td>\n3<\/td>\n<\/tr>\n
Kullanma Kolayl\u0131\u011f\u0131<\/td>\n2<\/td>\n2<\/td>\n1<\/td>\n1<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n<\/tr>\n
Is\u0131tma\/\u0130zolasyon<\/td>\n3<\/td>\n3<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n3<\/td>\n<\/tr>\n
Kirlenme Tehlikesi<\/td>\n3<\/td>\n3<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n1<\/td>\n3<\/td>\n<\/tr>\n
Montaj Kolayl\u0131\u011f\u0131<\/td>\n2<\/td>\n2<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n<\/tr>\n
Tamirat Kolayl\u0131\u011f\u0131<\/td>\n2<\/td>\n3<\/td>\n1<\/td>\n2<\/td>\n3<\/td>\n3<\/td>\n2<\/td>\n<\/tr>\n
Y\u00fcksek Bas\u0131n\u00e7<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n1<\/td>\n3<\/td>\n3<\/td>\n<\/tr>\n
Y\u00fcksek S\u0131cakl\u0131k<\/td>\n1<\/td>\n3<\/td>\n2<\/td>\n3<\/td>\n2<\/td>\n3<\/td>\n2<\/td>\n<\/tr>\n
Ko\u00e7 Darbeleri<\/td>\n1<\/td>\n1<\/td>\n3<\/td>\n3<\/td>\n3<\/td>\n1<\/td>\n1<\/td>\n<\/tr>\n
1=<\/td>\nM\u00dcKEMMEL<\/td>\n2=<\/td>\nTATM\u0130NKAR<\/td>\n3=<\/td>\nUYGUN DE\u011e\u0130L<\/td>\n<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Yukar\u0131daki tablonun excel ortam\u0131nda haz\u0131rlanm\u0131\u015f uygulama versiyonuna “Uygulamalar<\/a>” sayfam\u0131zdan ula\u015fabilirsiniz.<\/p>\n

\n

Kaynak<\/strong><\/p>\n

TTMD Dergisi Say\u0131:3 Temmuz-A\u011fustos 2003<\/a><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Vanalar, tesisat sekt\u00f6r\u00fcn\u00fcn vazge\u00e7ilmez elemanlar\u0131d\u0131r. Ak\u0131\u015fkanlar\u0131n ge\u00e7i\u015fini sa\u011flamak veya durdurmak i\u00e7in, debisini ayarlamak i\u00e7in, bas\u0131nc\u0131n\u0131 ayarlamak i\u00e7in vanalar kullan\u0131l\u0131r. Yaz\u0131m\u0131zda, tesisat sekt\u00f6r\u00fcnde kullan\u0131lan temel vana tiplerini ele alaca\u011f\u0131z. 1. S\u00dcRG\u00dcL\u00dc (GATE) VANA S\u00fcrg\u00fcl\u00fc vanalar; ak\u0131\u015fkan ge\u00e7i\u015fini, iki s\u0131zd\u0131rmazl\u0131k halkas\u0131 aras\u0131nda, ge\u00e7i\u015f y\u00f6n\u00fcne dik olarak kayan bir diskle (s\u00fcrg\u00fc ile) kapat\u0131p, a\u00e7arak g\u00f6revlerini yerine getirirler. S\u00fcrg\u00fc;… Vanalar<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":3625,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[7,49],"tags":[193,194,195,196,197,198,199,200,201],"class_list":["post-2065","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mekanik-tesisat","category-teknik-konular","tag-diyaframli","tag-gate","tag-glob","tag-kelebek","tag-kuresel","tag-pinc","tag-plug","tag-tapali","tag-vana"],"_links":{"self":[{"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/posts\/2065","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/comments?post=2065"}],"version-history":[{"count":0,"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/posts\/2065\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/benga.pro\/index.php\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/media?parent=2065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/categories?post=2065"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/benga.pro\/index.php\/wp-json\/wp\/v2\/tags?post=2065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}