Izinga lokusebenza le-piston pump ye-axial

Kwadalwa ngo 05.17

Axiale Kolbenpumpen Leistungsparameter

Die Hauptleistung der axialen Kolbenpumpe umfasst Druck, Verdrängung, Geschwindigkeit, Effizienz und Lebensdauer. Die Hauptstrukturparameter umfassen Kolbendurchmesser, Kolbenanzahl, Schwenkplattenwinkel usw.

(l) Ipheshana kuzo zonke izinhlobo zamapompo e-hydraulic, ipompo ye-plunger ingafinyelela phezulu kakhulu t ingcindezi yokusebenza. Ingcindezi ye-plunger pump ye-axis eqondile kanye ne-axis ehlangene ngokuvamile ifinyelela ku-40 ~ 48mpa, kanti ezinye zemikhiqizo yempi zifinyelela ku-60MPa; ingcindezi ephezulu ye-rotary swash plate plunger pump ifinyelela ku-100MPa.

(2) Idisplacement ye-axial piston pump ikakhulu incike kumjikelo we-plunger, i-stroke esebenzayo ye-plunger, i-angle yokuphakama ye-swash plate (i-angle phakathi kwe-transmission shaft kunye ne-cylinder axis) kunye nenani leemeko zomsebenzi ze-plunger nganye kwi-cycles yokusebenza nganye.

The general calculation formula of displacement of plunger pump is

V=Kπ/4d2hZ×10-3 (mL/r)                 (4-1)

Where K -- the number of action of each plunger in each working cycle;

D -- plunger diameter, mm;

H -- effective stroke of plunger, mm;

Z -- inombolo yeplunger.

Axialpistonpomp se verskuiwing berekeningsformule word in die onderstaande tabel getoon.

Axiale Kolbenpumpenverdrängungsformel

type	排量（mL/r）计算式	说明
直轴式柱塞泵	V=π/4d2ZDtanγ×10-3	d-柱塞直径，mm；Z-柱塞数；D-柱塞分布圆直径，mm；γ-斜盘倾角，（°）
斜轴式柱塞泵	V=π/4d2ZDsinγ×10-3	d-柱塞直径，mm；Z-柱塞数；D-传动轴驱动盘上连杆球窝的分布圆直径，mm；γ-传动轴与缸体轴线之间的夹角，（°）

Iholo le displaisment ye common straight shaft piston pump ngu 1.5 ~ 1500ml / R; iholo le displaisment ye inclined shaft piston pump ngu 5 ~ 2500ml / R; iholo le displaisment ye swashplate piston pump ngu 2.5 ~ 100ml / R.

(3) I-allowable speed ye-rotary piston pump iphezulu kakhulu, futhi inani elithile lihluka ngezincazelo zokuhambisa. Isibonelo, isivinini se-pump encane yokuhambisa singadlula u-10000 R / min, isivinini se-pump ephakathi kokuhambisa singu-3000 ~ 5000 R / min, kanti isivinini se-pump enkulu ye-heavy series straight shaft singafinyelela ngaphezu kuka-2000 R / min ngaphansi kwemibandela yokuphakamisa.

(4) Ijoliso phakathi kwazo zonke izinhlobo zamapompo amanzi azwayo, ivolumu yokusebenza yeplunger pump inemigqa yokuhlala eqinile ngokuphelele (ubuso), ngakho-ke ingafinyelela ku-volumetric efficiency ephezulu kakhulu. Ngenxa yesimo esihle sokunisela phakathi kwezixhumi ezihambayo, i-mechanical efficiency yayo ifinyelele ezingeni eliphezulu kakhulu. Okwamanje, i-volumetric efficiency kanye ne-mechanical efficiency ye-40 MPa heavy series axial piston pump eduze kwephuzu lokusebenza elilinganisiwe ingaphezu kuka-95%, kanti i-total efficiency ephezulu kakhulu ingu-91% ~ 93%. Ngenxa yokuthi i-swing angle ye-cylinder body ye-inclined shaft piston pump ingaba nkulu, i-"dead volume" evolumeni yokusebenza incane kakhulu, futhi ayikho into yokuvuza ye-slipper hydrostatic bearing. Ngaphezu kwalokho, isimo sokucindezela kwe-cylinder body kanye ne-plunger sikhona kangcono, i-volumetric efficiency yayo kanye ne-mechanical efficiency izoba phezulu kune-straight shaft piston pump efanayo.

Ngoba yokuvuza nokuhlangana, umjikelezo wokusebenza ophelele otholwe ngokuphindaphinda ukusebenza kwevolumu nokusebenza kwemishini ubonisa umkhuba wokuqala ukwanda bese unciphisa ngokwanda kwengcindezi nokuqhubeka. Ngenxa yomthelela wokwesekwa kokuqinisa kwemishini yokuhambisa eguquguqukayo, ukusebenza kwepompo eguquguqukayo kuhlala kuncane kancane kunezinga lokusebenza lepompo engaguquki. Ngaphezu kwalokho, ukusebenza kwepompo ye-hydraulic kunobudlelwano obukhulu nezici, ikhwalithi kanye nezinga lokushisa lesikhala esisebenzayo.

Figure P shows the total characteristic efficiency curve of a typical inclined shaft quantitative piston pump.

(5) Isebenza impilo ye-friction pairs yezingxenye ezisemqoka zomsebenzi we-piston pump yesimanje ngokuvamile inelubrication layer elihle leliquidi. Ezinye zazo zenzelwe ngokusekelwe emprinciple ye-Keding hydrostatic bearing, futhi zonke zenziwe ngezinto eziphezulu zokusebenza futhi zidlula emisebenzini ethile yokucubungula nokwelashwa kokushisa. Ngakho-ke, ngaphansi kwezimo zokusetshenziswa ezifanele (ikakhulukazi uma kusetshenziswa imidiya yokusebenza enev viscosity efanele futhi kugcinwa ukuhlanzeka kwayo okwanele), i-piston pump kulula ukuyisebenzisa Ngaphansi kwezimo ezibekwe phansi, impilo yesevisi ibaluleke kakhulu, isibonelo, kwi-heavy series axial piston pump, ingafinyelela ngaphezu kuka-10000 ~ 12000h. Ngokuvamile, impilo yesevisi ye-axial piston pump longer kunaleyo ye-radial piston pump, futhi i-rotary cylinder pump longer kunaleyo ye-swashplate pump ku-piston pump eqondile.

(6) Ngokuhlanganyela nezinye izipompo ze-hydraulic, ukuhamba kwepulsation nokukhala kwepomp ye-plunger kukhulu. Ukuhamba kwepulsation kwepomp ye-piston kuyimbangela eyinhloko yokukhala. Phakathi kwezinhlobo zonke zezipompo ze-piston, izinga lokukhala kwepomp ye-seat valve piston liphezulu kakhulu, kanti lezo zezinye izipompo ze-piston zifana kakhulu. Inani le-plunger linomthelela omkhulu ekuhambeni kwepulsation, futhi inani elingama-odd le-plunger lihle kakhulu kunalelo elingama-even ukuze kuncishiswe ukuhamba kwepulsation. Ngalesi sizathu, umgomo wendabuko wokwakha uwukuthatha inani le-plunger njengama-odd, okungukuthi, 5, 7, 9, 11, njll.

(7) Powere densi na kost performans di hi presi, hi spidi an waid rangi ov wörking envelop ov planja pump enebul it tu transmit a larg powere valu. Di powere densi in di hi presi sistem kan ritch mor dan 10kW / kg, espeshali az a hi presi variabli pump, it haz hi kost performans, wich kan not bi replased bai otha taips ov pumps. Haweva, bekos it iz a kaind ov non presi bearing shel element, di displasmant valu per unit struktura volyum iz not az larg az dat ov gear pump an vane pump, so di planja pump iz bulky an expensiv in medium an lo presi haidraulik sistem an az a kwantitativ pump.

(8) The main structural parameters Z, D and R are three mutually restricted parameters, which are related to the structural type, performance, strength, rigidity and processability. When the number of plunger is large, the displacement of axial piston pump can be increased, but if the number of plunger is too large, the radial size of the pump and the volume and weight of the whole pump will be increased. In order to reduce the flow pulsation, the number of plunger in plunger pump should be odd, usually z = 5 ~ 9, z = 9 for through shaft plunger pump and z = 7 for non through shaft plunger pump.

The inclination angle of swash plate of straight shaft piston pump is generally from 18 ° to 21 ℃. The angle between transmission shaft and cylinder axis of inclined shaft piston pump is usually γ max = 25 ° to 45 °.

Shiya imininingwane yakho futhi
sizokuthinta.

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