Kuverenga Kwishoma Inlet Pressure

Kana kukamanikidzwa mupombi kwakaderera pane kupisa kwemhepo yepakati, cavitation ichaitika, iyo inobata kushanda kwepombi. Kuti udzivise cavitation uye uone kuti pombi inlet ine zvishoma zvishoma, musoro mukuru wekutsvaira unofanira kuverengwa sekutevera:

H = Pbx10.2-NPSH-Hf-hv-Hs

Pb: Kuderera kwemhepo, bar (Muvharo yepipeline yakavhara, inogona kutaridzirwa semamiriro ekugadzirisa);
NPSH: Net positive suction head, m (Nhamba yepamusoro pakuyerera kwe Q-NPSH kurwisana);
Hf: Kurasikirwa kwepipe yekurasikirwa (Kukosha pahuwandu hwekuyerera kwepipeline inobvumirana);
Hv: Medium vapor pressure, m (Medium mhepo inoshandiswa pakushambidzwa kwakanyatsotarisana, kushanduka kusinganzwisisiki mvura, sezvinoratidzwa mumufananidzo4 kurudyi);
Hs: Kuchengetedzwa kwemafuro, m, huwandu hwehuwandu ndihwo 0.5.
Kuenzanisa chikonzero: kana H ichibudirira, iyo pombi inogadzirirwa mukutsvaga, zvisinei, inowanikwa mu downdraft nenzira.

Cherechedza: Hazvidi kuti uite pamusoro pekuverengwa pasi pemamiriro ezvinhu ose. Chero bedzi patinoshandisa pombi mumamiriro ezvinhu anotevera tinoda kuverenga H:
1. Kutonhora kwakakura kwakakwirira;
2.Velocity of flow is larger than rated value;
3.Suction musoro mukuru kana inlet pipeline yakareba;
4.Systems pressure is small;
5.Mamiriro ezvinhu akaipa.

Kusarudzwa Kwemapumpu

Kusarudzwa kwemapombi kunofanira kunge kwakabva kune:
Duty hoyo yepombi.
Dimensional data yakadai sokurasikirwa kwepfungwa sekupedza kukwirira kwemaonero, kupesana kurasikirwa mupipeworkork,
Pump efficiency etc.
Pombi zvinhu
Pump connections
Inowanzoshandiswa kushandiswa kwemagetsi kugadzirisa tafura

1. Basa rekushandisa pamapombi:

Kubva pane chinzvimbo chebasa zvinokwanisika kusarudza pombi pamusoro pematsetse emaruva akaratidzwa mu & quot; performancecurves / technical & quot; data.

2. Dimensional data:

Kana kuisa pombi inotevera inofanira kutorwa kuongorora: â € ¢ Inoda kubuda uye kumanikidzwa pakudhonza-off point.â € ¢ Kurasikirwa nekushungurudzwa semusana wekukwikwidza kusiyana. • Kushushikana kurasikirwa mupipeworkork (Hf) (Refer kusvika mumufananidzo.1) Izvo zvinogona. • • Kubudirira kwakanyanya pane inenge yafungidzirwa kuti inoshandiswa. • ¢ NPSH kukosha. • Kuverenga kwehuwandu hweNPSH, ona svondo rinoenderana nemaruva.

3. Kuisa pombi:

Pamberi pekugadzirisa zvakanakisisa kugadzirisa pfungwa, chirwere chepachipatara chepombi chinofanira kuonekwa. Kana iyo pombi inotarisirwa kuita sendima imwechete yebasa, zvino sarudza BL pombi iri kushanda panzvimbo yebasa inowirirana neyakanakisisa yepombi.
Sezvo pombi yakakura pamusana pepamusoro-soro kunokwanisika, zvinokosha nguva dzose kuva nechinzvimbo chebasa kune kodzero yepamusoro yehutano (eta) kuitira kuti uchengetedze hutano hwakanaka apo kuyerera kunodonha.

4. Pump nyaya:

Kusarudzwa kwepombi kushamwaridzana kunoenderana neanoridzirwa kushandiswa uye basa repombi. iyo pombi inopa huwandu hwakasiyana hweftexible ukama hwakadai se:

5. Inowanzoshandiswa kushandiswa kwema mechanical seal magadziri

Munda weKushandisa

Shaft seal type

Shaft seal material

Kazhinji

Special

1

2

3

4 5

Tora chinhu

Inotenderera chikamu

Code

Chikamu chikamu

Code

Elastomers

Code

Kugadzikana kwemvura

Collor

Code

0â "ƒ kusvika + 90â" ƒ mvura yakachena

â-

Graphite

A

SiC

S

FPM

F

SUS304

C

ASFC

0â "ƒ kusvika + 90â" ƒ mvura yakachena

â-

WC

W

Graphite

A

FPM

F

SUS304

C

WAFC

+ 90â "ƒ kusvika + 120â" ƒ kurwisa kwemhepo

â-

SiC

S

SiC

S

EPDM

E

SUS304

C

SSEC

kusvika ku 0â "ƒ

â-

WC

W

WC

W

EPDM

E

SUS304

C

WWEC

Mechanical seal type	Pump muenzaniso	d1	d2	h
NJK	BL (T) 2/4	12	12	55
	BL (T) 8/12/16/20	16	16	57.5
	BL (T) 32/45/60/90	22	22	72
NDA	BW (J) 2/4	12.7	16	32
	BW (J) 8/16	17.4	20	33.5