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Hidrolik pompalar ile ilgili temel kavramlar
� �� akı�kanının sisteme / kullanıcılara iletilmesini sa�lar.
� Mekanik enerjiyi hıza – DEB� ye dönü�türler
� Pompalar basınç olu�turmazlar
� Sistemde kullanılacak olan ya�
miktarını – DEB� yi olu�tururlar
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Hidrolik pompalar ile ilgili temel terimler
� DEPLASMAN: Pompa �aftının “1” tur dönmesi ile basaca�ı ya� miktarıdır.
birim: cm3 , sembol: Vg
� DEV�R (HIZ) : Pompa �aftının “1” dakikadaki tur sayısıdır:
birim: 1/min , sembol: n
� DEB� : Pompanın “1” dakikada basaca�ı ya� miktarıdır. DEB�=Deplasman x
devir
birim: lt/dak - lt/min , sembol: qv
� BASINÇ : Pompnın bastı�ı ya�ın, cm2 ba�ına gördü�ü dirençtir.
birim: bar , sembol: p
� Nominal Basınç : Pompanın sürekli olarak emniyetle çalı�bilece�i max.
Basınç’tır
birim: bar , sembol: pN
� Peak (Pik) Basıncı: Pompanın kısa süreli (bir kaç saniye) çalı�abilece�i
max. basınç de�eridir
birim: bar , sembol: pmax
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Hidrolik pompaların sınıflandırılması
�ÇTEN D��L�
DI�TAN D��L�
D��L� POMPALAR
SAB�T DEPLASMANLI
DE���KEN DEPLASMANLI
PALETL� POMPALAR
RADYAL P�STONLU
E��K EKSENL� E��K D�SKL�
EKSENEL P�STONLU
P�STONLU POMPALAR
H�DROL�K POMPALAR
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Di�li pompalar
� Sürekli 250 bar basınç de�erine kadar çalı�abilirler
� Endüstriyel ve mobil uygulamalar için uygundurlar
� Nispeten sesiz çalı�ırlar
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Dı�tan di�li pompalar
� Pompa Büyüklü�ünün Çalı�ma De�erlerine Etkisi
deplasman hacmi cm3 4 8 19 22 80 100max.sürekli çalı�ma basıncı bar 250 250 240 210 180 150peak basıncı bar 275 275 270 230 210 170max. devir dev/dak 5000 4000 3000 2500 2700 2700gürültü düzeyi (150 bar için) dB 60 62 70 70 73,5 73
2’li, 3’lü ya da 4’ lü tandem pompa yapılabilirler
http://makinaegitimi.com
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�çten di�li pompalar
� Sürekli 315 bar; kısa süreli 350 bar basınçta çalı�abilirler� Çok sessiz çalı�ırlar� Genelde endüstriyel uygulamalar için uygundurlar
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� Pompa Büyüklü�ünün Çalı�ma De�erlerine Etkisi
deplasman hacmi cm3 6,3 16 25 40 100 250max.sürekli çalı�ma basıncı bar 315 315 250 250 160 125peak basıncı bar 350 350 315 315 210 160max. devir dev/dak 3000 3000 3000 2600 2200 1800gürültü düzeyi (150 bar için) dB 55 60 60 61 69 77
2’li, 3’lü ya da 4’ lü tandem pompa yapılabilirler
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Sabit deplasmanlı paletli pompalar
� 210 bar basınca kadar çalı�abilirler
� Genelde mobil uygulamalarda kullanılırlar
� 2500 1/min hıza kadar kullanılabilirler
� Çok sessiz çalı�ırlar
�FT STROKLU (ODACIKLI) PALETL� POMPALAR
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Sabit deplasmanlı paletli pompalar
TEK STROKLU (ODACIKLI) PALETL� POMPALAR
Genelde, de�i�ken
deplasmanlı paletli
pompalrda
uygulanırlar
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De�i�ken deplasmanlı paletli pompa
� Direkt Uyarılı De�i�ken Deplasmanlı Paletli Pompalar
R�NG
ROTOR
PALET
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De�i�ken deplasmanlı paletli pompa
� Pilot Uyarılı De�i�ken Deplasmanlı Paletli Pompalar
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De�i�ken deplasmanlı paletli pompa
� Pilot Uyarılı De�i�ken Deplasmanlı Paletli Pompalar : Ppompa < Pregülatör
Basınç regülatörü
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De�i�ken deplasmanlı paletli pompa
� Pilot Uyarılı De�i�ken Deplasmanlı Paletli Pompalar : Ppompa >= Pregülatör
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Pistonlu pompalar - Radyal pistonlu pompalar
� 700 bar gibi çok yüksek basınçlarda çalı�abilirler
� Küçük deplasmanlı pompalardır.
� Doldurma de�il sıkı�tırma i�lemi için kullanılırlar
� Endüstriyel uygulamalar için uygundurlar
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Eksenel pistonlu pompaların sınıflandırılması
SAB�T DEPLASMANLI DE���KEN DEPLASMANLI
E��K EKSENL�
SAB�T DEPLASMANLI DE���KEN DEPLASMANLI
E��K D�SKL�
EKSENEL P�STONLU
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E�ik eksen prensipli pompalar
� Sabit deplasmanlı pompalarda e�im açısı 25 derece (eski seriler) / 40 derece (yeni seri)
� De�i�ken deplasmanlı pompalarda e�im açısı yakla�ık 0 - 13 derecedir
� 400 – 450 bar sürekli çalı�ma basıncında çalı�abilirler
MOVIE
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E�ik eksen prensipli pompalar – Sabit deplasmanlı pompalar
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E�ik eksen prensipli pompalar
� Sabit Deplasmanlı Pompalar, iç yapısı
DA�ITIM PLAKASI
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E�ik eksen prensipli pompalar
� De�i�ken Deplasmanlı Pompalar
Debi konumu Sıfır konumu
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E�ik eksenli de�i�ken debili pompa
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De�i�ken Deplasmanlı, E�ik Eksenli Pompaların Genel �ç Yapısı
Gövde
Rotary Group
Kontrol (Arka kapak)
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E�ik disk prensipli pompalar
• Pistonlar, tahrik �aftına paralel olarak dizilmi�lerdir.
• Tandem (arkaya bir ya da daha çok pompa ekleme) yapmaya uygundur
MOVIE
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E�ik disk prensipli pompalar
� Sabit Deplasmanlı Pompalar
400 bar sürekli çalı�ma basıncına kadar çalı�ırlar
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E�ik disk prensipli pompalar
� De�i�ken Deplasmanlı Pompalar
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E�ik disk prensipli pompalar
� De�i�ken Deplasmanlı Pompalar
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De�i�ken debili pompalarda ayar ve regülasyon tipleri
� Harici Pilot Basıncı Uyarılı Deplasman Ayarı / H�DROL�K - H�DROL�K
Pompa Deplasman Ayarları
Pst – Harici pilot basıncı
Vg – Pompa deplasman Hacmi
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De�i�ken debili pompalarda ayar ve regülasyon tipleri
� Oransal Bobinli Ayarlama / H�DROL�K - ELEKTRON�K
I – Oransal valf kontrol akımı
Vg – Pompa deplasman Hacmi
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De�i�ken debili pompalarda ayar ve regülasyon tipleri
� Mekanik – Stro�a Ba�ımlı Deplasman Ayarı / H�DROL�K - MEKAN�K
b – Oransal valf kontrol akımı
Vg – Pompa deplasman Hacmi
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De�i�ken debili pompalarda ayar ve regülasyon tipleri
� Basınç Regülasyonu
PHD – Pompa basıncı
Q - Pompa debisi
Pompa basıncı ayarlanan de�ere ula�tı�ında, pompa açısını “0” dereceye dü�ürerek debi üretmeden basıncı sabit tutar
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De�i�ken debili pompalarda ayar ve regülasyon tipleri
� Basınç Regülasyonu
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De�i�ken debili pompalarda ayar ve regülasyon tipleri
� Debi Regülasyonu
PHD – Pompa basıncı
Q - Pompa debisi
Sistemde debi ihtiyacının azalması durumunda, pompa üzerinde bulunan debi algılama valfi, pompanın e�im açısını ihtiyacı kar�ılayacak kadar azaltır ya da artırır
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De�i�ken debili pompalarda ayar ve regülasyon tipleri
� Debi Regülasyonu
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De�i�ken debili pompalarda ayar ve regülasyon tipleri
� Güç Regülasyonu
P – Pompa basıncı
Q - Pompa debisi
Pompa istenilen bir sabit güç de�erinde tahrik edilmek isteniyorsa, pompa üzerinde bulunan güç regülasyon valfisayesinde, ayarlanan güç de�erine ula�ıldı�ında pompa Phd x Q = sabit kalacak �ekilde basınç arttıkça debiyi azaltır
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Neden de�i�ken deplasmanlı pompa
NEDEN DE���KEN DEPLASMANLI POMPA ?
ENERJ� TASARUFU
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SAB�T DEB�L� POMPA
GÜÇ REGÜLASYONLU POMPA
BO�A HARCANAN
GÜÇ
� Güç Regülasyonlu Pompada Enerji Tasarrufu
Neden de�i�ken deplasmanlı pompa
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Neden de�i�ken deplasmanlı pompa
� Basınç Regülasyonlu Pompada Enerji Tasarrufu
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Hidrolik pompa seçim kriterleri
� Kullanılacak olan akı�kan
� �stenilen basınç aralı�ı
� �stenilen devir sayısı
� Çalı�ma sıcaklıkları
� Gürültü seviyesi
� Kontrol tipi
� Bakım imkanları
� Maliyet
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Hidrolik pompa seçim kriterleri
Kriter
DDP
�DP
OP
VP
VPTOPP
ÇOPP
E�RPP
ESBRPP
EEPEPP
EDPEPP
Kullanılabilir Hız Aralı�ı 1 2 2 2 3 3 2 2 2 2Kullanılabilir Basınç Aralı�ı 2 2 3 3 3 3 1 1 1 1Viskozite Aralı�ı 1 2 3 1 3 3 1 1 1 1Max. Gürültü Seviyesi 4 1 2 1 2 2 3 3 3 3Kullanım Ömrü 3 2 2 1 1 1 2 2 2 2Fiyat 1 2 2 3 2 2 3 3 3 3
1 - çok iyi / çok geni�
2 - iyi / geni�
3 - orta
4 - zayıf
DDP : DI�TAN D��L� POMPA�DP : �ÇTEN D��L� POMPAOP : ORB�T POMPAVP : V�DA POMPATOPP : TEK ODALI PALETL� POMPAÇOPP : Ç�FT ODALI PALETL� POMPAE�RPP : EKSANTR�K �AFTLI RADYAL P�STONLU POMPAESBRPP : EKSANTR�K S�L�ND�R BLOKLU RADYAL P�STONLU POMPAEEPEPP : E��K EKSEN PRENS�PL� EKSENEL P�STONLU POMPAEDPEPP : E��K D�SK PRENS�PL� EKSENEL P�STONLU POMPA
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Pompa seçimini belirleyen di�er kriterler
� Tandem pompa kullanılıp kullanılmayaca�ı
� Pompanın (sistemin) kontrol tipi
� Sistemin açık ya da kapalı çevrim olması
� Ya� kirlili�ine kar�ı hassasiyet
� ��letici personel kabiliyetleri