1.Onjezani mafuta osindikizira

Kwa ma valve omwe sagwiritsa ntchito mafuta osindikizira, ganizirani kuwonjezera mafuta osindikizira kuti muwongolere ntchito yosindikiza tsinde.

2. Onjezani chodzaza

Pofuna kupititsa patsogolo kusindikiza kwa kulongedza kwa tsinde la valve, njira yowonjezeramo ingagwiritsidwe ntchito. Nthawi zambiri, ma fillers awiri kapena angapo osanjikiza amagwiritsidwa ntchito. Kungowonjezera kuchuluka, monga kuwonjezera chiwerengero kuchokera ku zidutswa zitatu kufika pa zidutswa zisanu, sikudzakhala ndi zotsatira zoonekeratu.

3. Bwezerani graphite filler

The ambiri ntchito PTFE kulongedza katundu ali ndi ntchito kutentha mu osiyanasiyana -20 kuti +200 °C. Pamene kutentha kumasintha kwambiri pakati pa malire apamwamba ndi otsika, ntchito yake yosindikiza idzachepa kwambiri, idzakalamba mofulumira ndipo moyo wake udzakhala waufupi.

Flexible graphite fillers amagonjetsa zofooka izi ndikukhala ndi moyo wautali wautumiki. Choncho, mafakitale ena asintha zonse PTFE kulongedza ku graphite kulongedza, ndipo ngakhale mavavu owongolera omwe angogulidwa kumene agwiritsidwa ntchito pambuyo pochotsa PTFE kulongedza ndi graphite kulongedza. Komabe, hysteresis yogwiritsira ntchito graphite filler ndi yaikulu, ndipo nthawi zina kukwawa kumachitika poyamba, kotero kulingalira kwina kuyenera kuperekedwa kwa izi.

4. Sinthani njira yoyendetsera ndikuyika P2 kumapeto kwa tsinde la valve.

Pamene △P ndi yaikulu ndipo P1 ndi yaikulu, kusindikiza P1 mwachiwonekere kumakhala kovuta kwambiri kuposa kusindikiza P2. Choncho, kayendetsedwe ka kayendetsedwe kake kakhoza kusinthidwa kuchokera ku P1 kumapeto kwa tsinde la valve kupita ku P2 kumapeto kwa tsinde la valve, lomwe liri lothandiza kwambiri kwa ma valve omwe ali ndi kuthamanga kwakukulu komanso kusiyana kwakukulu. Mwachitsanzo, mavavu a bellows nthawi zambiri amayenera kuganizira kusindikiza P2.

5. Gwiritsani ntchito lens gasket kusindikiza

Kuti asindikize zivundikiro zapamwamba ndi zapansi, kusindikiza kwa mpando wa valve ndi matupi apamwamba ndi apansi. Ngati ndi chisindikizo chathyathyathya, kutentha kwambiri komanso kuthamanga kwambiri, kusindikiza kwake kumakhala koyipa, kumayambitsa kutayikira. Mutha kugwiritsa ntchito chosindikizira cha lens gasket m'malo mwake, chomwe chingakwaniritse zotsatira zokhutiritsa.

6. Bwezerani gasket yosindikiza

Mpaka pano, ma gaskets ambiri osindikizira amagwiritsabe ntchito matabwa a asbestos. Pa kutentha kwambiri, ntchito yosindikiza imakhala yochepa ndipo moyo wautumiki umakhala waufupi, zomwe zimayambitsa kutayikira. Pankhaniyi, mutha kugwiritsa ntchito ma spiral bala ma gaskets, mphete za "O", ndi zina zambiri, zomwe mafakitale ambiri adatengera.

7. Limbani ma bolts molingana ndikusindikiza ndi ma gaskets woonda

M'mapangidwe a valve oyendetsa ndi "O" mphete yosindikizira, pamene ma gaskets akuluakulu okhala ndi mapindikidwe akuluakulu (monga mapepala ozungulira) amagwiritsidwa ntchito, ngati kuponderezedwa ndi asymmetrical ndipo mphamvuyo ndi yopanda malire, chisindikizocho chidzawonongeka mosavuta, chopendekera komanso chopunduka. Kukhudza kwambiri ntchito yosindikiza.

Choncho, pokonza ndi kusonkhanitsa valavu yamtunduwu, ma bolts oponderezedwa ayenera kulumikizidwa molingana (zindikirani kuti sangathe kumangika nthawi imodzi). Zingakhale bwino ngati gasket wandiweyani angasinthidwe kukhala gasket woonda, amene mosavuta kuchepetsa kupendekera ndi kuonetsetsa kusindikiza.

8.Onjezani m'lifupi mwa malo osindikizira

Pakatikati mwa valavu (monga pulagi ya valavu ya valavu ya malo awiri ndi valavu ya manja) ilibe kalozera ndi malo opindika pampando wa valve. Vavu ikagwira ntchito, valavu yapakati imayang'aniridwa ndi mphamvu yakumbuyo ndikutuluka kuchokera komwe kulowera. Square, kukula kwa kusiyana kofananira kwapakati pa valve, chodabwitsa ichi chidzakhala chovuta kwambiri. Kuphatikiza apo, kupindika, kusasunthika, kapena kung'ung'udza kwakung'ono kwa ma valve pachimake chosindikizira (nthawi zambiri 30 ° chamfering kuti chiwongolere) kumapangitsa kuti ma valve atsekedwe akatsala pang'ono kutseka. Kumapeto kwake kumayikidwa pamalo osindikizira pampando wa valve, kuchititsa kuti valavu idumphe potseka, kapena osatseka konse, ndikuwonjezera kutulutsa kwa valve.

Yankho losavuta komanso lothandiza kwambiri ndikuwonjezera kukula kwa valavu yosindikizira pamwamba, kotero kuti m'mimba mwake pang'onopang'ono wa nkhope yomaliza ya valve ndi 1 mpaka 5 mm yaying'ono kuposa kutalika kwa mpando wa valve, ndipo ali ndi chitsogozo chokwanira kuti valavu iwonongeke. pachimake amatsogoleredwera ku mpando wa vavu ndikusunga Kulumikizana kwabwino kosindikiza pamwamba.