Kev sib piv cov qauv thiab kev teeb tsa cov lus qhia rau PTFE V-Nplhaib ntim thiab cov foob sib xyaw

Ntawm no yog kev txhais lus Askiv zoo nrog cov lus qhia tseeb thiab ntws engineering style lus:

PTFE V-Nplhaib piv rau PTFE Composite Foob hauv Reciprocating Foob Daim Ntawv Thov
Kev sib piv ntawm ob hom kev sib khi zoo sib xws hauv kev sib khi sib khi:

PTFE V-ring packing (Chevron/V-packing set) thiab PTFE composite seals (PTFE slipper seal with elastomer O-ring energiser). Ob leeg yog ua hauj lwm nyob rau hauv dynamic sealing txawm hais tias lawv muaj ib tug sib txawv architectures, ua hauj lwm hauv paus ntsiab lus thiab installation yuav tsum tau.

1. Cov qauv sib piv 2.
A. V-Ring Packing ua los ntawm PTFE (V-Packing Kit / Chevron)
A PTFE V-ring packing set feem ntau muaj xws li ib tug series ntawm stacked V-shaped rings axially squeezed nyob rau hauv ib lub thawv ntim khoom. Ib qho kev teeb tsa ntau yog raws li hauv qab no:

Txiv neej Adapter Nplhaib (Header Nplhaib / Siab Sab)

Ntau Chevron V-rings (intermediate seal rings)

Poj niam adapter nplhaib (gland nplhaib / compression nplhaib)

Kev xaiv lub nplhaib siab, txhawb lub nplhaib lossis tiv thaiv -extrusion rov qab- lub nplhaib

Nyob ntawm kev ua haujlwm, Freudenberg V- cov khoom ntim kuj tseem muaj cov nplhaib siab, V- cov nplhaib sib khi thiab cov nplhaib txhawb nqa.

Txoj cai ntawm kev ua haujlwm:

Lub caj pas yog compressed axially los muab thawj sealing quab yuam.

Lub sealing daim di ncauj yog ntxiv zog los ntawm lub zog siab thiab kev sib cuag kev nyuaj siab yog nce (tus kheej-energizing nyhuv).

Principales características:

Re-adjustable: sealing kev ua tau zoo tuaj yeem rov- tsim los ntawm re- zawm lub caj pas.

Cov qauv tsim muaj zog rau hnyav -lub luag haujlwm thiab kev sib raug zoo- cov ntawv thov yooj yim.

Feem ntau siv rau hauv cov khoom qub thiab cov chaw ua haujlwm hnyav.

Txoj cai ntawm tus ntiv tes xoo rau haum:
"V-groove mus rau sab siab."

B. PTFE Composite Foob (PTFE Sliding Ring + O-Nplhaib Energizer)
PTFE composite foob feem ntau yog ua los ntawm:

PTFE sealing nplhaib (slipper foob / zawv zawg nplhaib)

Ib qho elastomer O-nplhaib li energizing/preload element

Cov nplhaib thaub qab (yeem xaiv los tiv thaiv-extrusion)

Zoo li nrog Parker Slipper Seal® cov tshuab ua haujlwm sealing tiav los ntawm kev sib txuas lub nplhaib PTFE swb nrog lub nplhaib elastomer O-.

Txoj kev ua haujlwm:

O-ntiv nplhaib muab thawj zaug radial preload rau kev sib khi ntawm xoom lossis qis qis.

Lub nplhaib PTFE tau nias thiab nyem tawm tsam qhov chaw mating txhim kho nws lub peev xwm sealing.

Cov yam ntxwv tseem ceeb:

Kev sib txhuam tsawg dua V-ring packing.

Kev ua tau zoo dua ntawm kev nrawm dua thiab ntau lub zog dynamic.

Ntau rhiab heev rau groove geometry, extrusion qhov khoob thiab kev sib dhos.

Feem ntau tsis adjustable. Cov ntsaws ruaj ruaj feem ntau yog hloov dua li rov- nruj.

C. Cov lus sib piv ceev
Yam khoom PTFE V-Ring Packing (Chevron) PTFE Composite Foob (PTFE + O Ring)
Structure Ntau V-rings + adapters + xaiv lub nplhaib PTFE swb nplhaib + elastomer O- nplhaib (energiser)
Preload method Axial gland nyem O-ring radial energisation
Adjustability Retighten kom them nyiaj rau wearFixed groove tsim, tsis yog -adjustable
Kev taw qhia ntawm lub siab Feem ntau nyob rau hauv ib qho kev taw qhia (los yog ob teev rov qab mus rau tom qab) Feem ntau yog ib txoj kev
Kev sib txhuam siab dua vim muaj ntau qhov sib khi daim di ncauj Friction qis dua, zoo dua rau kev txav mus los
Tolerance rau misalignment Siab kam rau ua, muaj zog rhiab heev rau clearance thiab misalignment
Daim ntawv thov Hnyav, tsis tshua muaj cov cuab yeej cuab tam Hydraulic, kev kub ceev, kev sib txhuam qis
2. PTFE V-Ring Packing Installation Instructions 2.1 Kev tshuaj xyuas thiab kev npaj ua ntej kev teeb tsa
Ua ntej installation:

Ua tib zoo ntxuav lub thawv ntim khoom, tshem tawm cov khoom seem, xeb thiab burrs.

Kos pas nrig lossis lub tog raj kheej nto rau qhov qhab nia, khawb lossis hnav.

Xyuas kom tseeb tias groove kev ncaj ncees yog khaws cia thiab raug chamfered

Lead- nyob rau hauv chamfers yuav tsum tau kom tsis txhob puas los yog inversion ntawm daim di ncauj thaum lawv ntsia.

Siv lub teeb lubricant sib haum nrog cov txheej txheem xov xwm kom txo tau kev sib txhuam thiab tiv thaiv kev puas tsuaj rau lub foob thaum sib dhos.

2.2 Installation Order thiab Orientation
Kev sib raug zoo yog qhov tseem ceeb:

V-groove yuav tsum fim rau sab siab.

Hom kev teeb tsa ib ntus (siab sab rau sab caj pas):

Adapter nplhaib, txiv neej

Chevron V-rings (stacked seal rings) 2.

Poj niam adapter nplhaib

Ob leeg Freudenberg thiab Garlock nyuaj rau txoj kev taw qhia mus rau qhov nruab nrab siab.

2.3 Staggering ntawm Butt Joints (Split Rings)
Rau split nplhaib designs:

Cov pob qij txha hauv cov kab uas nyob ib sab yuav tsum tau staggered kom tsis txhob muaj cov dej ntws tawm.

Freudenberg pom zoo kom muaj kev sib cais ntawm cov pob qij txha ntawm kwv yees li . 120 degree

Garlock feem ntau qhia txog 90℃offset raws li qhov tsawg kawg nkaus.

Kev staggering kom zoo tiv thaiv txoj hauv kev los ntawm kev nyob hauv - kab.

2.4 Compression thiab Correction Control
Ib qho ntawm cov laj thawj tseem ceeb ntawm kev ua tsis tiav yog dhau - compression.

Cov lus qhia tseem ceeb:

Maj mam compress thaum xub thawj kom txog thaum lub ntim ntim.

Ua qhov ntsuas qis qis ua ntej kev hloov kho zaum kawg.

Yog hais tias muaj qhov to, maj mam maj mam increments me me.

Tighten caj pas bolts tusyees kom lub load tsis faib unevenly.

Compression ntau dhau tuaj yeem ua rau:

Ua kom kub ntau lawm thiab kev sib txhuam

Lov -slip phenomenon

Nce hnav ntawm cov pas nrig nto

Freudenberg thiab Garlock ob leeg txhawj xeeb txog qhov xav tau kev tswj hwm, kev hloov kho zuj zus, tsis dhau -tightening.

3. Cov lus qhia rau kev teeb tsa PTFE cov ntsaws ruaj ruaj (PTFE + O-Nplhaib)
3.1 Kev npaj ua ntej kev teeb tsa
Groove huv si, qhuav thiab tsis muaj kuab paug.

Groove nkag chamfer check.

Siv cov ntaub nplaum tiv thaiv los yog lub tes tsho los tiv thaiv cov npoo ntse, cov chaw nres nkoj, cov keyways thiab cov chaw threaded.

Parker kuj pom zoo kom thaiv txhua qhov kev txiav cov npoo kom tsis txhob ua rau lub foob thaum lub sijhawm teeb tsa.

Siv cov cuab yeej txhim kho kom zoo xws li lub tes tsho nthuav dav, tsis yog cov cuab yeej hlau, los tiv thaiv PTFE puas.

3.2 Ib ntu ntawm kev teeb tsa (Critical)
Parker Slipper Seal® cov qauv kev teeb tsa:

Nruab lub elastomer O-ntiv nplhaib hauv qhov zawj ua ntej.

Lub PTFE sealing nplhaib yog yuav tsum tau siv ib tug zoo xws li expansion cuab tam.

Yog hais tias qhov distortion yog tam sim no, ib tug sizing (burnishing) lub tes tsho yuav siv tau los kho lub roundness.

Ceeb toom tseem ceeb:

Tsis txhob cia lub voj voog PTFE nthuav tsis sib xws.

Tsis yog -cov khaub ncaws hnav tuaj yeem ua rau tsis tuaj yeem deformation thiab ua tsis tiav ntxov.

Kev nthuav dav tsis txaus yam tsis muaj rov- qhov sib npaug yog feem ntau yog qhov chaw ntawm kev xau thaum ntxov.

3.3 Kev taw qhia hauv kev taw qhia
Txhua tus neeg tsim khoom muaj qhov sib txawv geometry tab sis:

Lub siab sab yog sab ntawm lub nplhaib PTFE uas muaj qhov qhib sab lossis sealing daim di ncauj.

Qhov no muab siab pab di ncauj activation tiv thaiv mating nto.

Ib txwm txheeb xyuas qhov kev taw qhia kom raug nrog cov cim chaw tsim khoom lossis chamfers.

4. Kev teeb tsa tsis tu ncua
A. PTFE V-Nplhaib Sealing Failures
Kev taw qhia tsis raug (V-groove tsis tig rau sab siab) → to, instant lossis maj mam

Improper joint alignment ->direct leakage channel txoj kev loj hlob

Overcompression → tshav kub, nplaum swb, ncej puas

Di ncauj twisting los yog inversion → thaum ntxov tsis ua hauj lwm

B. PTFE Composite Gasket Failures
PTFE ring installation before O-ring (particularly in tight grooves) =>O-ring twist lossis foob puas

Sharp edges not protected ->PTFE nplhaib txiav thaum lub sij hawm installation

Tsis zoo los yog ntau dhau PTFE expansion → irreversible deformation thiab ntxov ntxov to

Poob ntawm sealing kev ncaj ncees tom qab nthuav dav → Ua tsis tiav rov-loj

Cov ntsiab lus no kuj yuav raug hloov mus rau hauv, yog tias tsim nyog:

Cov ntaub ntawv style sib piv

Ib daim ntawv qhia rau cov neeg ua haujlwm tu

Los yog ib qho yooj yim version ntawm daim teb installation checklist