mframa a ɛwɔ valve mu .is a kind of compressed air as a driving force to achieve the opening and closing of the valve, to achieve gas, liquid, steam and other different types of fluid control, with simple structure, fast response, high control accuracy, safety and reliability, etc., the following will tell you about the pneumatic valve fault location: FC, FO, FL, FLC, FLO, AFL/EFC and AFL/EFO
1, type ne adwumayɛ nnyinasosɛm a ɛwɔ mframa valve mu .
Pneumatic valve no yɛ afã abiɛsa titiriw: mframa a wɔde yɛ adwuma, valve nipadua, nneɛma a wɔde di dwuma. Actuator no bi ne spring, diaphragm/piston, pneumatic abaa, handwheel, ne nea ɛkeka ho, a ɛde mframa a wɔahyɛ no den a ɛho tew di dwuma titiriw sɛ ahoɔden, gye 20 ~ 100kPa gas sɛnkyerɛnne anaa 4 ~ 20mA anyinam ahoɔden sɛnkyerɛnne, na afei ɛma valve nipadua no yɛ adwuma ma ɛyɛ adwuma, na ɛma nsu a ɛsen fa valve core ne nkongua no ntam no yɛ nsakrae.
Valve nipadua no titiriw ne valve disc, valve cage, valve stem, valve seat, valve cage pressure ring ne nneɛma afoforo; Nneɛma a ɛka ho titiriw ne valve ahorow a ɛtew nhyɛso so, solenoid valve ahorow, positioners, current/voltage converters, filters, flow amplifiers, ne nea ɛkeka ho.
Adwumayɛ nnyinasosɛm a ɛwɔ mframa valve no mu ne sɛ wobehu sɛnea valve no bue na ɛto mu denam mframa piston anaa gear ne mfiri afã afoforo a ɛwɔ actuator no mu a wɔpia no fa mframa a wɔahyɛ no den no mu, a wobetumi akyekyɛ mu pɔtee akɔ: mframa a wɔde ma - control signal input - positioner movement- valve opening and closing steps. Sɛnea rotary torque a valve no hwehwɛ no hwehwɛ no, nhyehyɛe no sesa cylinder a wɔaka abom dodow, na wobetumi asesa spindle no a ɛkyinkyini no denam mframa a ɛkɔ mu ne nea efi mu no gyinabea a wɔbɛsakra no so.
Pneumatic valve no titiriw wɔ mfaso a edidi so yi: Nea edi kan no, mframa valve no dwumadi yɛ ntɛmntɛm, na wobetumi awie nsakrae ahyɛde no wɔ bere tiaa bi mu; Nea ɛto so abien no, mframa a ɛwɔ mu no betumi ne cylinder kɛse no ayɛ biako na ama wɔanya tumi kɛse bi a ɛkanyan torque; Nea ɛto so abiɛsa no, mframa valve no betumi ayɛ adwuma a ahobammɔ wom na ɛyɛ den bere tenten wɔ tebea horow a emu yɛ den nyinaa mu.
Pneumatic valves sɛnea ɔkwan a wɔfa so yɛ adwuma no te no, mpɛn pii no wobetumi akyekyɛ mu ayɛ no gas open, gas closed type. Wɔsusu gas a wɔbɛbue ne nea wɔbɛto mu a wɔbɛpaw no ho sɛnea ahobammɔ angle a ɛwɔ process production mu no te.
Sɛ wotwa mframa fibea no a, valve no yɛ nea ahobammɔ wom wɔ baabi a wɔato mu anaasɛ baabi a wɔabue no.
Mframa a ɛbɛbue (mframa a ɛbue) ne sɛ mframa nhyɛsoɔ a ɛwɔ film head no so no kɔ soro, valve no kɔ kwan so kɔ soro kɔ soro, na berɛ a wɔadu nhyɛsoɔ a ɛwɔ input pressure no atifi no, valve no wɔ tebea a ɛbue koraa mu. Nea ɛbɛyɛ na wɔayɛ saa no, sɛ mframa no nhyɛso so tew a, valve no kɔ baabi a wɔato mu no, na valve no to mu koraa bere a mframa a wɔde hyɛ mu no nni hɔ no. Enti, ɛtɔ da bi a wɔfrɛ gas open valve no nso sɛ ɛnyɛ FC.
Ɔkwan a mframa no fa so yɛ adwuma kɔ Close type no ne mframa no bɔ abira pɛpɛɛpɛ ma ɛbue type. Sɛ mframa no nhyɛso kɔ soro a, valve no kɔ ɔkwan a wɔfa so to mu no so; Sɛ mframa no nhyɛso so tew anaasɛ ɛnyɛ saa a, valve no bue wɔ ɔkwan a ɛda hɔ so anaasɛ ɛbue koraa. Enti, ɛtɔ da bi a wɔfrɛ no fail to open FO.
Acting type a ɛbɔ ho abien. valve no bue ne nea ɛto mu adeyɛ no nyinaa fi mframa fibea/mframa a wɔahyɛ no den no, nnyinasosɛm titiriw a ɛfa adeyɛ ho no ne adeyɛ biako no hyia, nanso ahohuru bere biara nni adeyɛ abien no mu mframa a ɛma nsu yɛ adwuma no mu, a ɛyɛ den kɛse wɔ nnyinasosɛm ne nhyehyɛe mu.
Afei wɔ dwumadie no mu no, mpɛn pii no mfomsoɔ gyinabea ahodoɔ pii wɔ hɔ (FO, FC, FL), na mfomsoɔ a ɛwɔ valve no mu no mfomsoɔ Close/fault open kyerɛ sɛ valve no yɛ adwuma berɛ a mframa fibea no yɛ mfomsoɔ.
Wɔ mframa valve mfomso beae no, wɔakyekyɛ mu titiriw ayɛ no tebea horow pii:
1, pneumatic valve device interlock action, ɛsɛ sɛ valve gyinabea no yɛ tebea horow a edidi so yi .
FC - mframa fibea ayera, valve wɔ gyinabea a wɔato mu .
Fo - mframa fibea ayera, valve wɔ gyinabea a ɛbue .
FL - mframa fibea no yera, valve no wɔ bere gyinabea na bere nyinaa ɛkura .
FLC - mframa fibea no yera, valve no kura nanso ɛtaa to mu, valve no wɔ gyinabea a wɔato mu (exhaust gas wɔ cylinder mu) .
Flo - mframa fibea a ɛyera, valve a ɛkura gyinabea nanso ɛpɛ sɛ ɛbue, valve wɔ gyinabea a ɛbue (mframa a ɛyera wɔ cylinder mu) .
2. Sɛ regulating valve anaa switching valve de ne ho hyɛ afiri no ntam adeyɛ mu a, ɛsɛ sɛ valve gyinabea no nya tebea horow a edidi so yi .
FC - Mframa fibea no ayera anaasɛ solenoid valve no ayera, na valve no wɔ gyinabea a wɔato mu .
Fo - Mframa fibea no ayera anaasɛ solenoid valve no ayera, na valve no wɔ gyinabea a ɛbue .
AFL/EFC -- 1. Mframa fibea no ayera. Solenoid valve no nyera. 2. ɛmfa ho sɛ mframa fibea no ayera anaasɛ solenoid valve no ayera, valve no wɔ gyinabea a wɔato mu .
AFL/EFO -- 1. Mframa fibea no ayera. Solenoid valve no nyera. 2. ɛmfa ho sɛ mframa fibea no ayera anaasɛ solenoid valve no ayera, valve no wɔ gyinabea a ɛbue .
Pneumatic valve nam output sɛnkyerɛnne no so ma wonya valve cut off, connected, adjustment ne dwumadi afoforo, ne bue ne closing ahoɔhare no yɛ ntɛmntɛm, wɔtaa de di dwuma ma fast two-gyinabea cut off use, wobetumi nso de adi dwuma de asiesie flow of use, with different accessories, wo ntumi nkɔ ahorow ahorow a ɛsono control akwan.
2, pneumatic valve a ɛtaa di huammɔ .
1 pneumatic valve leakage ma huammɔdi kɔ soro na ɛde ba .
Nsu a ɛtwetwe nsu no mu nsu a ɛtwetwe nsu no gyina valve switch no so titiriw. Sɛ yɛbɛbɔ no mua a, nkɔanim a ɛba wɔ mframa valve no mu no fi nneɛma abien a edidi so yi titiriw: nea edi kan no, valve spool a ɛwɔ mframa valve no mu no asɛe esiane sɛ wɔde di dwuma bere tenten dodo nti, a ɛde valve no a wɔde to mu no nyɛ den a ɛma nsu a ɛtwetwe no kɔ soro; Nea ɛto so abien ne sɛ, sɛ wɔde valve no fra ananafo nipadua anaasɛ wɔde bushings a ɛwɔ mu no fra mu, anaasɛ wɔhyɛ nhyɛso a ɛwɔ nsɛm ho amanneɛbɔ ahorow ntam no so a, sɛ nhyɛso nsonsonoe a ɛwɔ medium no mu no yɛ kɛse a, ɛbɛma rigidity so atew, na ama valve no mu antoto koraa, na awiei koraa no ɛbɛma mframa a ɛwɔ valve no mu no akɔ soro.
2 Sɛnea mframa valve no ne nea ɛde ba no ntumi nyɛ adwuma yiye .
Sɛ́ ebia sɛnkyerɛnne no nhyɛso no ntumi nnyina anaasɛ mframa fibea nhyɛso no ntumi nnyina no, ebia mframa a ɛwɔ mu no ntumi nnyina. Nsɛnkyerɛnneɛ nhyɛsoɔ a ɛnnyina no bɛma regulator no afiri no atumi ayɛ adwuma, na sɛ mframa fibea nhyɛsoɔ no ntumi nnyina a, nhyɛsoɔ a ɛtew so no bɛdi nkoguo ɛnam tumi ketewa a ɛwɔ compressor no mu nti. Ebetumi aba nso sɛ amplifier spray block no gyinabea wɔ positioner no mu no nyɛ pɛpɛɛpɛ, na nsonsonoe a ɛda wɔn ho wɔn ho ntam no ma mframa a ɛwɔ mu no yɛ adwuma a entumi nnyina. Bio nso, output tube anaa output line no nyɛ den, nso ɛbɛma pneumatic valve no adeyɛ no annyina; Amplifier ball valve no nso bɛka sɛnea mframa valve no gyina esiane friction a ɛwɔ gap no ne foreign matter nti.
3 mframa valve vibration huammɔdi na ɛde ba .
Nneɛma a atwa yɛn ho ahyia a atwa yɛn ho ahyia no nya mframa a ɛwɔ mu no so nkɛntɛnso ntɛmntɛm bere a ɛreyɛ adwuma no. Bere a bushing ne spool no ayɛ adwuma bere tenten akyi no, abien no bɛyɛ nsonsonoe wɔ friction adeyɛ no ase, mfiri afoforo a ɛwosow wɔ hɔ a atwa mframa valve no ho ahyia, na gyinabea a ɛnyɛ nea ɛkari pɛ a ɛwɔ mframa valve no mu no bɛma mframa a ɛwɔ mu no awosow. Bio nso, sɛ wɔpaw mframa valve no kɛse wɔ ɔkwan a ɛmfata so anaasɛ ɔkwan a wɔfa so to mu a ɛwɔ biako-akongua valve no ne ɔkwan a nsu a ɛsen fa so no kyerɛ no nhyia a, mframa a ɛwɔ mu no nso bɛma wo ho ayɛ hyew.
4 Pneumatic Valve Slow Action huammɔdi na ɛde ba .
Wɔ mframa valve a wɔde tu kwan no mu no, akyinnye biara nni ho sɛ valve dua no ho hia. Sɛ valve stem no bɔ a, ɛbɛma friction a ɛnam ne round-trip adeyɛ no so aba no ayɛ kɛse, na ɛbɛma mframa valve no ayɛ adwuma nkakrankakra. Sɛ graphite ne asbestos filler lubricating oil, PTFE filler nyɛ normal a, ɛbɛma pneumatic valve no ayɛ brɛoo, sɛ mfutuma wɔ valve nipadua no mu a, pneumatic valve no si positioner no mu, ne nea ɛkeka ho, bɛma resistance a ɛwɔ pneumatic valve stem operation no mu aba, na ɛde aba a ɛyɛ slow action no aba.
5 Pneumatic valve no nyɛ adwuma na ntease ahorow .
mframa fibea ne sɛnkyerɛnne sɛ premise ne nnyinaso de hwɛ hu sɛ mframa valve ahorow no bɛyɛ adwuma yiye. Sɛ positioner no nni mframa fibea biara a, valve a ɛtew nhyɛso so no betumi adi nkogu, na wobetumi asiw filter ne pipeline no ano wɔ tebea horow a emu yɛ den mu. Sɛ locator no wɔ mframa fibea, nanso enni output a, ɛbɛsiw throttle hole a ɛwɔ locator no mu no ano; Sɛ mframa fibea ne sɛnkyerɛnne no nni hɔ a, sɛ ɔhyew no sua a, mframa fibea no mmue, na ɛbɛdi nkogu efisɛ wɔasiw valve a ɛtew nhyɛso so ne mframa kwan no ano, na awiei koraa no ɛde compressor no di nkogu. Sɛ mframa fibea bi wɔ hɔ nanso sɛnkyerɛnne biara nni hɔ a, ɛbɛsɛe omental mprɛte no na ama afiri a ɛhwɛ ade no bellows no akɔ mframa mu.
3, mframa a ɛwɔ valve mu no yɛ akwan a wɔtaa fa so di ɔhaw ahorow ho dwuma .
1 Pneumatic valve leakage a ɛkɔ soro wɔ ayaresa kwan so .
Esiane sɛ mframa a ɛwɔ mu no twetwe kɔ soro nti, sɛ wɔhyɛ valve no spool no a, ɛho hia sɛ wɔde spool foforo no si ananmu ntɛm ara na ama nsu a ɛtwetwe no akɔ soro esiane nsu a ɛtwetwe no nti; Sɛ ɛyɛ ahɔho nipadua a wɔde ahyɛ valve no mu nti a, ɛho hia sɛ wɔde nneɛma a wɔde siesie nneɛma di dwuma de siesie na wɔhohoro mu bere ano na wɔayi ahɔho nipadua afi hɔ; Sɛ nhyɛso a ɛwɔ ntam no yɛ kɛse a, ɛho hia sɛ wɔma mframa a ɛwɔ mframa no mu no yɛ adwuma yiye, ɛma mframa no fi mu kɔ soro, na ɛtew nsu a ɛtwetwe no so. Bio nso, sɛ wɔde mframa a ɛwɔ mu no si hɔ a, ɛsɛ sɛ wɔhwɛ nso sɛ valve no dua tenten a wɔapaw no yɛ nea ɛfata, sɛnea ɛbɛyɛ a wobesiw nsu a ɛtwetwe a valve no de ba no ano koraa.
2 Ɔkwan a wɔfa so di dwuma a ɛma mframa valve no ntumi nyɛ adwuma yiye .
Ɛho hia sɛ wɔhwɛ hu sɛ tumi ntam nkitahodi nhyehyɛe no yɛ adwuma yiye esiane sɛnea mframa a ɛwɔ mu no yɛ adwuma a entumi nnyina a nsɛnkyerɛnne nhyɛso a entumi nnyina nti. Esiane sɛ mframa valve no yɛ adwuma a entumi nnyina a mframa nhyɛso a entumi nnyina no de ba nti, ɛsɛ sɛ wɔyɛ positioner no foforo, na sɛ ɛho hia a, wobetumi de gyinabea foforo asi ananmu, sɛnea ɛbɛyɛ a mframa a ɛwɔ mu no gyina pintinn. Ɛyɛ yiye nso sɛ wobɛsan ahyɛ valve no dua no mu anaasɛ wobɛma srade ayɛ kɛse na ama valve stem contact part no friction no so atew, atew mframa a ɛwɔ valve no mu a entumi nnyina no so, na woayɛ nsakrae wɔ sɛnea positioner outlet gyinabea no yɛ pɛpɛɛpɛ no mu na ama mframa a ɛwɔ valve no mu no antumi anyɛ adwuma no afi hɔ.
3 mframa valve vibration mfomso ayaresa kwan .
Wɔ mframa valve wosow a ɛnam friction a ɛda bushing ne spool ntam no so de ba no, ɛsɛ sɛ wɔsesa bushing no ntɛm ara; Wɔ mframa valve wosow a ɛnam mfiri afoforo a ɛwosow a atwa mframa valve no ho ahyia so de ba no, ɛho hia sɛ wohwɛ yiye sɛ wubehu wosow no fibea na woayi wosow no afi hɔ; Esiane sɛ mframa a ɛwɔ valve no mu a entumi nnyina pintinn no wosow nti, ɛsɛ sɛ wɔsesa nnyinaso foforo; Esiane sɛ wosow a ɛnam sɛ ɛne ne ho nhyia a ɛda ɔkwan a wɔfa so to mu a ɛwɔ biako-akongua valve ne akwankyerɛ a ɛwɔ medium flow no ntam nti, ɛho hia sɛ wɔyɛ mu nhwehwɛmu na wobu no atɛn na wɔyɛ nsakrae wɔ ɔkwan a ɛfata a wɔfa so de mframa valve no si hɔ no so.
4 Pneumatic Valve Slow Action Ɔhaw ano aduru .
Sɛnea mframa a ɛwɔ mu no yɛ adwuma brɛoo no fa sɛnea ahurututu no asɛe no ho titiriw, enti ɛsɛ sɛ wɔsesa ahurututu foforo no wɔ bere mu; na hwɛ yiye sɛ ebia graphite ne asbestos filler lubricating oil ne polytetrafluoroethylene filler no yɛ nea ɛfata anaa, na sɛ ɛho hia a, fa si ananmu na ama wɔahwɛ ahu sɛ ɛwɔ tebea a ɛfata mu; Siesie ahɔhoɔ a ɛwɔ valve nipadua no mu wɔ berɛ mu na ama valve no ho atew; Wɔyɛ valve no dua no ho adwuma na ama akasakasa a ɛda valve no dua no ne nneɛma a atwa ho ahyia no ntam no so atew, sɛnea ɛbɛyɛ a wobedi ɔhaw a ɛfa sɛnea mframa a ɛwɔ valve no mu no yɛ adwuma brɛoo no ho dwuma.
5 Pneumatic valve nyɛ adwuma ɔhaw ano aduru .
Mfomso a ɛne sɛ mframa fibea bi wɔ hɔ nanso mframa valve no nyɛ adwuma no, ɛho hia sɛ wohwɛ ahyɛde kwan no mmiako mmiako na woyi mfomso no fi hɔ wɔ bere mu. Sɛ positioner a ɛwɔ pneumatic valve no mu no nni input ne display biara a, ɛho hia sɛ wɔde positioner foforo no si ananmu wɔ bere mu; Sɛnea ɛbɛyɛ a spool ne stem no bɛsɛe kɛse no, ɛho hia sɛ wɔde spool foforo no ne dua foforo no si ananmu wɔ bere mu de hwɛ hu sɛ wɔde nsa ntwahonan no besi baabi a ɛfata.
