Nghiên cứu ảnh hưởng của chiều dài và đường kính ống hút đến hiệu suất làm việc của bơm thủy lực

Cdng trinh Khoa hgc

NGHIEN cut ! ANH Hl/ONG CUA CHIEU DAI

VA DUONG KINH 6N G HUT DEN HIEU SUAT LAM VIEC

CUA BOM THUY LUC

NGUYEN DINH TiJ

Bp mon Mdy xiiy dung - Xep dd

Khoa Ca khi

Trudng Dgi hgc Giao thdng Van Idi

Tdm tdt: Dudng dng hut Id mot bd phdn ciia he thdng truyen ddng thuy luc, cd anh huong

lan den hiiu sudt ldm viic cua bom thiiy tuc ndi riing vd chdt luong ldm viec cua he thdng

thuy luc ndi chung. Ndi dung bdi bdo trinh bdy ldm tdt mgt sd kit qua nghiin ciru ciia di ldi

NCKH cdp truong md sd T20I3-CK-29 ve dnh hudng ciia chieu ddi vd dudng kinh dng hut din

hieu sudt ldm viic cua bam thuy luc.

Summary: The pipes are part of the hydraulic drive system, its have great influence on

the performance of hydraulic pumps privately and the all hydraulic .systems generally This

paper presents a summary of results of my researches topic number T2013-CK-29 on the

impact of the length and diameter of pipes to the performance of the hydraulic pumps.

I. DAT VAN DE

Dudng dng hiit la bd phdn trung gian ket ndi giCra bam thiiy lire va thiing ddu, ddy Id mgt

trong nhDng bg phdn khdng the thilu trong he thdng truyin dgng thiiy luc, cd anh hudng rdt ldn

dfin hi?u sudt hut va hi6u suat the tich bam thuy luc. Mdt khdc, chi do lam viec ciia bam thiiy

luc lien quan true tiep din hieu suat hut, hieu sudt the tich, din dao dgng, mai mdn bl mat cdc

thiit bj thiiy lyc,.,. Do vdy, can phai nghien cuu anh hudng cua cac ylu td kit cdu din kha nang

hilt ciia bam thuy luc, lam ca sd cho viec lua chgn chieu dai vd dudng kinh ctia dudng dng phii

hgp vdi timg logi bam va he thdng thiiy luc khac nhau, Nd giiip cho ngudi thiit kl lya chgn

phuang an bd tri dudng dng hut, bd tri bom thiiy lyc trong tuang quan vj tri vdi thiing ddu de

bam thiiyyuc lam viec vdi hieu qua cao nhdt Id vdn de can thiet nghien cuu.

II. GIAI QUYET VAN DE

Trong he thdng truyen dgng thiiy luc, vj tri mieng hiit trong thiing ddu cd thi duac bd tri

cao han hodc thdp han bam thiiy luc, Vdi viec bd tri thiing ddu d vj tri cao han so vdi bam thiiy

luc cho phep tgo ra dp luc d mieng hiit, qua dd nang cao duoc hieu sudt hiit trdnh dugc hien

tugng hinh thanh Idc xody ciia ddng ddu nhung cd nhugc diSm Id lam tang dp tuc ddng ddu hdi,

ldm gidm luc keo tren dgng ca thiiy luc va dan den tieu hao nhien lieu dgng ca din ddng va lam

gidm hi?u sudt lam viec cua bom thuy luc, Ngoai ra, viec thay ddi hinh dgng mieng hiit, sd

lugng chd ndi, viec bd tri van, loai ddu cdng tdc,.,, cung lam thay ddi ddng ke khd nang hiit cira

bom thiiy lyc.

78 Tap chi KHOA HQC GIAO THONG VAN TAI So 50 - 02/2016