Leakage analysis ye mechanical chisimbiso chepombi?

Parizvino, zvisimbiso zvemuchina zvinoshandiswa zvakanyanya muzvigadzirwa zvepombi, uye nekuvandudzwa kwehunyanzvi hwechigadzirwa uye zvinodikanwa zvekuchengetedza simba, tarisiro yekushandiswa kwepombi mechini zvisimbiso ichave yakawedzera. Pombi mechanical chisimbiso kana chisimbiso, icho chine peya yezviso perpendicular kune axis yekutenderera, kudzvanywa kwemvura iri pasi pechiito chesimba re elastic uye chisimbiso chemuchina kunze kwemuripo wemuripo, ine kutsamira kune imwe magumo echisimbiso chekubatsira. uye kuchengetedza hutano, uye hama inotsvedza, nokudaro Dzivirira kubuda kwemvura. Ichi chinyorwa chichakurukura mechanical seals yemapombi.

1 Phenomenon uye zvinokonzeresa zvemakanika chisimbiso chepombi kuvuza

1.1 Kudzvanya kuchaita kuti chisimbiso chemuchina kuti pombi ibude

Nekuda kwekudonha kweiyo mechanical chisimbiso che 1.1.1 vacuum operation

Panguva yekutanga-up process, pombi inomiswa. Chikonzero chekuvharika kwepombi inopinza, senge mhepo inopomba ine svikiro, inogona kuita kuti mechanical seal cavity ive yakaipa kumanikidza. Kana iyo chisimbiso mhango yakaipa kudzvanywa, inokonzeresa kukweshera pamusoro pekuisa chisimbiso uye kuvuza kweyakavakirwa-mukati mekiniki seal chimiro. Ichakonzera chiitiko che (mvura). Different vacuum seals uye positive pressure seals ndiko kusarongeka kwechinhu uye kuiswa chisimbiso, uye ma mechanical seals ane kwaakananga.

Countermeasure: Adopt kaviri magumo kumeso mechanical chisimbiso, iyo inobatsira kuvandudza lubrication mamiriro uye kunatsiridza kuisa chisimbiso kuita.

1.1.2 Inokonzerwa nekudonha kwechisimbiso chemechani yepombi ine high pressure uye pressure wave

Nekuda kwekuti dhizaini yekudzvanya kwechitubu uye chiyero chekumanikidza chakakurisa uye chisimbiso chegomba chisimbiso chinodarika 3MPa, zvinokonzeresa kuti iyo yekupedzisira pamusoro pekumanikidzwa kwechisimbiso chepombi ive yakakura kwazvo, zvakaoma kugadzira firimu rekuvhara. , kupfeka, kuwedzera kwekushisa, kunokonzerwa nekupisa kwekupisa kwechisimbiso chepamusoro.

Countermeasures: Kana uchiunganidza chisimbiso chemuchina, kudzvanywa kwechirimo kunofanirwa kuenderana nemirairo. Zviitiko zvakawandisa kana zvidiki hazvibvumidzwe. Izvo zviyero zvinofanirwa kutorwa pasi pemamiriro epamusoro-kudzvinyirira mechanical seals. Kuti uite kushushikana kwepamusoro uye kuderedza deformation, yakakwirira-simba zvinhu zvakadai secemented carbide uye ceramic zvinogona kushandiswa, uye kutonhora nekuzora matanho anofanira kusimbiswa, uye kusarudzwa kwenzira dzakavimbika dzekutumira, dzakadai sekiyi, mapini. , nezvimwewo.

1.2 Periodic mechanical seal leakage

1.2.1 Periodic vibration ye rotor. Chikonzero ndechekuti stator uye yepasi yekupedzisira chivharo haisi mukati kana kunze kwekuenzanisa pakati pe impeller uye huru shaft, cavitation kana kutakura kukuvara (kupfeka), izvo zvichapfupisa hupenyu hwe mechanical seal leakage.

Countermeasures: Gadzirisa dambudziko re periodic mechanical seal leakage zvinoenderana nemaitiro ekugadzirisa.

1.2.2 The axial momentum yepombi rotor inokanganisa nhamba yezvisimbiso zvekubatsira mechanical uye shaft, uye mhete inofamba haigoni kufamba zvakanaka pane shaft. Mune pombi reverse, inoshanduka, inomira ring ring, hapana muripo wekutamiswa.

Countermeasures: Mumuchina wekusimbisa chisimbiso, iyo axial momentum shaft inofanirwa kunge isingasviki 0.1mm, uye mechaniki chisimbiso uye huwandu hweshaft hwekukanganisa pombi yekubatsira inofanira kunge iri pakati nepakati. Uchiri kuvimbisa chisimbiso cheradial, ita shuwa kuti shaft inogona kufambiswa zvakanaka mumusangano wemhete inofamba (inofambisa mhete yekumanikidza). Chitubu chinogona kudzoka zvakasununguka).

Kusakwana kuwanda kwemafuta ekuzora pamusoro kunokonzerwa nekukwesha kwakaoma kana mechanical seal dhizaini yemapombi akavharirwa bhurashi.

Countermeasures: Kureba kwemafuta ekuzora pamusoro pekamuri yekamuri yemafuta kunofanirwa kuwedzerwa kune inoshanduka uye yakamira mhete yekuisa chisimbiso pamusoro.

1.3. Mamwe matambudziko anokonzerwa nekudonha kwe mechanical seal yepombi

1.3.1 Kupera kweshaft (kana sleeve) yezvisimbiso zvemakanika uye kuisirwa mhete uye nzvimbo yekupedzisira yekumisikidza (kana imba) yeiyo static ring seal gland sealing ring inofanira kukwizwa, uye gungano nderokudzivirira kukwenya. mhete yekuisa chisimbiso.

1.3.2 Kutsikirira kwechirimo kunofanirwa kuenderana nemirairo. Zviitiko zvakawandisa kana zvidiki hazvibvumidzwe. Iko kukanganisa ndeye 2mm. Kudzvinyirira kwakanyanya kunowedzera kudzvanywa kwechiso chekupedzisira, kupisa kwakanyanya, uye kupfeka kwepamusoro kunokonzera kupisa kwemafuta uye kukurumidza kwenzvimbo yekuisa chisimbiso, uye huwandu hwekumanikidza Kana iyo static mhete iri diki zvakanyanya, iyo chaiyo yekumanikidza kwechiso chekupedzisira haina kukwana. uye inogona kuiswa chisimbiso.