Mechanical chisimbiso inozivikanwawo sechisimbiso chechiso chekupedzisira, chine peya yezviso zvekupedzisira perpendicular kune axis yekutenderera, iyo yekupedzisira kumeso pasi pekuita kwekumanikidza kwemvura uye muripo wemagetsi ekunze simba, zvichienderana nekubatanidzwa kwechisimbiso chekubatsira uye imwe magumo kuti urambe wakakwana, uye hama inotsvedza, kuitira kudzivirira kubuda kwemvura. Credo Pump inopfupisa izvo zvakajairika kuvuza zvikonzero zvepombi yemvura mechini chisimbiso:

Common leakage phenomenon

Chikamu che mechanical seal leakage accounts inodarika 50% yemapombi ese ekugadzirisa. Kushanda kwehutano hwe mechanical seal kunokanganisa zvakananga kushanda kwepombi. Inopfupikiswa uye inoongororwa sezvinotevera:

1. Periodic leakage

Pombi rotor shaft chiteshi chekufamba, chisimbiso chekubatsira uye kupindira kukuru kweshaft, mhete inofamba haigone kufamba ichichinjika pane shaft, kana pombi ikashandurwa, inoshanduka uye yakamira mhete inopfeka, hapana muripo wekuchinjisa.

Countermeasures: Mukusangana kwechisimbiso chemuchina, shaft yekumhanyisa shaft inofanirwa kunge isingasviki 0.1mm, uye kupindira pakati pechisimbiso chekubatsira uye shaft kunofanirwa kuve pakati nepakati. Ndichiri kuvimbisa chisimbiso cheradial, rin'i inofambiswa inogona kufambiswa zvakanaka pashaft mushure mekusangana (mhete inofambiswa inogona kudzoserwa zvakasununguka kuchirimo).

2. Kusakwana kwemafuta ekuzora panzvimbo yekuisa chisimbiso kunokonzeresa friction yakaoma kana kudhirowa chisimbiso chekupedzisira chiso.

Countermeasures: Kureba kwenzvimbo yemafuta ekuzora mukamuri yeoiri kunofanirwa kunge kwakakwira kupfuura nzvimbo yekuvharisa yezvindori zvinofamba uye zvakamira.

3. Periodic vibration ye rotor. Chikonzero ndechekuti stator uye yekumusoro uye yakadzika magumo mavhavha haaenzanise impeller uye spindle, cavitation kana kutakura kukuvara (kupfeka), mamiriro aya achapfupisa hupenyu hwekuisa chisimbiso uye kubuda.

Countermeasures: Matambudziko ari pamusoro anogona kugadziriswa maererano nemaitiro ekugadzirisa.

Leakage nekuda kwekumanikidzwa

1. Mechanical seal leakage inokonzerwa nehigh pressure uye pressure wave nekuda kwekunyanya kudzvanya kwechitubu uye dhizaini yakazara chaiyo yekumanikidza uye kudzvanywa kuri mukamuri yekuisa chisimbiso inodarika 3MPa, kuchaita kuti iyo chaiyo yekumanikidza yekuisa chisimbiso kumeso kuve yakakura zvakanyanya, zvichiita kuti zviome. kuti firimu remvura riumbe, kupfeka kwakakomba pachiso chekuvhara kumeso, kuwedzera calorific kukosha uye zvichikonzera kupisa kwekupisa kwenzvimbo yekuisa chisimbiso.

Countermeasures: mumusangano wemuchina chisimbiso, kudzvanywa kwechirimo kunofanirwa kuitwa zvinoenderana nezvinopihwa, usabvumire yakakura kana diki chiitiko, kudzvinyirira kwakanyanya pasi pechisimbiso chemuchina kunofanirwa kutora matanho. Kuti uite kuti kuguma kwechiso kusimba kunzwisisika, sezvinobvira kuderedza deformation, inogona kushandisa yakaoma alloy, ceramics uye zvimwe zvinhu zvine simba rakanyanya kumanikidzika, uye kusimbisa kutonhora kwemafuta ekuzora, sarudza nzira yekufambisa, yakadai sekiyi, pini, etc.

2. vacuum pombi mechanical seal leakage inokonzerwa nekushanda mukugadzirisa kwekutanga, kumira, nekuda kwepombi inlet blockage, kupomba svikiro rine gasi, zvinogona kukonzera kusagadzikana kwechisimbiso chivharo, chisimbiso chivharo kana chisimbiso chisina kunaka, iyo yakaoma friction. inokonzeresa zvisimbiso, yakavakirwa-mukati mechanical seal inoburitsa (mvura) yekuvuza chiitiko, vacuum chisimbiso uye mutsauko weyakanaka kumanikidza chisimbiso chinotungamira musiyano wechinhu, uye kuchinjika kwemuchina chisimbiso kune imwe nzira.

Countermeasure: tora kaviri magumo kumeso menikani chisimbiso, zvinobatsira kuvandudza lubrication mamiriro uye kuita chisimbiso.

Kudonha kunokonzerwa nepakati

1. Zvizhinji zvepombi yepombi mechanical seal dismantling, static ring uye ringing ring aixiliary seals inelastic, zvimwe zvakaora, zvichiita kuti pave nekudonha kwakawanda kwechisimbiso chemuchina uye kunyange kukuya shaft phenomenon. Nekuda kwekushisa kwakanyanya, iyo acid isina simba mutsvina, hwaro husina kusimba pane static mhete uye inofambisa mhete yerubber seal corrosion, zvichikonzera kuti mechanic leakag yakakurisa, ine simba uye yakasimba ring rubber seal material ye nitrile -- 40, high tembiricha inopesana, acid. -alkali inodzivirira, apo tsvina ine acidic uye alkaline iri nyore kuita ngura.

Countermeasures: kune corrosive media, zvikamu zverabha zvinofanirwa kunge zvisingaite tembiricha, isina kusimba asidhi inodzivirira, isina simba alkali fluororubber.

2. Mechanical seal leakage inokonzerwa neakasimba particle tsvina. Kana zvimedu zvakasimba muchiso chechisimbiso, zvichachekwa kana kukurumidzira zvisimbiso zvekusakara uye kubvaruka, chiyero uye kuunganidzwa kwemafuta pamusoro peshaft (seti), nekukurumidza kupfuura chiyero chekupfeka kwefriction pair, mhete inogona. Kusatsiva kubviswa kweabrasion, yakaoma kune yakaoma friction peya inoshanda kwenguva yakareba kupfuura yakaoma kune graphite friction pair, nekuda kwezvimedu zvakasimba zvakavharirwa graphite sealing mhete yekuvharisa pamusoro.

Countermeasure: Iyo mechanical chisimbiso che tungsten carbide friction pair inofanira kusarudzwa munzvimbo iyo yakasimba zvidimbu zviri nyore kupinda.

Nekuda kwemamwe matambudziko anokonzerwa nekudonha kwema mechanical seals mechanical seals achiripo mukugadzira, kusarudzwa, kuiswa uye dzimwe nzvimbo dzisina musoro.

1. Kusungirirwa kwechitubu kunofanira kuitwa maererano nemitemo, uye haibvumirwi kuva yakakura kana kuti duku. Iko kukanganisa ndeye ± 2mm.

2. Kunoperera chiso cheshaft (kana shaft sleeve) kuisa inofambiswa ring seal ring uye panoperera face ye seal gland (kana shell) kuisa static ring seal ring inofanira kupepereswa nekukwenenzverwa kudzivirira kukuvara kweinomira ring seal ring panguva yekuungana.