NOV JWS-400 Tapered Valves and Seats Pump

Kev koom ua ke siab -lub zog dynamic ncej

JWS-400 siv lub monolithic siab-lub zog steel lub zog ncej, tsim qauv tseem ceeb rau kev siv engineering. Thaum lub sijhawm ua haujlwm siab-load twj tso kua mis, lub twj tso kua mis lub cev muaj kev hloov pauv tseem ceeb. Nyob rau hauv sib piv, sib cais los yog bolted thav duab yuav tsim me elastic deformations nyob rau hauv cyclic kev nyuaj siab. Thaum tsis pom qhov muag liab qab, cov deformations no tuaj yeem ua rau lub ntsej muag tsis zoo ntawm lub crankshaft thiab crosshead qhia, uas ua rau muaj kev coj tus cwj pwm, txuas cov pas nrig qaug zog, lossis ua tsis tiav ntxov ntawm lub thawv ntim khoom. Lub thav duab monolithic tshem tawm cov pob qij txha, xa cov qauv tshwj xeeb rigidity uas ua kom muaj kev sib raug zoo ntawm cov khoom txav hauv qab tag nrho.

Tsis tas li ntawd, lub thav duab suav nrog "Open Frame Construction", muab kev yooj yim rau cov neeg ua haujlwm tu. Lub zog loj- qhov kawg tshuaj xyuas npog tso cai rau cov kws tshaj lij nkag mus rau cov khoom tseem ceeb xws li cov kabmob thiab cov pas nrig sib txuas, tshem tawm qhov xav tau tshem tawm tag nrho lub twj tso kua mis los ntawm kev txhawb nqa thaiv. Qhov kev tsim qauv no qhia txog qhov tseem ceeb ntawm - qhov chaw ruaj ntseg.

Crankshaft Dynamics thiab Bearing Configuration

Lub crankshaft, lub plawv ntawm chav tsev fais fab, yog nruab nrog Ob Chav Extended crankshaft hauv JWS-400 qauv.

• Dimensions: Crankshaft txoj kab uas hla 6.00 nyob rau hauv (152.4 mm), ncua ntev 10.25 nyob rau hauv (260.4 mm), keyway loj 1.50 x 0.75 nyob rau hauv.
• Kev tsim qauv tsim: Lub dual-shaft extension tsim ua rau cov neeg siv yooj yim xaiv lub zog tawm tswv yim los ntawm sab laug lossis sab xis raws li lub tsheb layout. Qhov no ua pov thawj tias yog qhov tseem ceeb ntawm engineering zoo rau qhov chaw - txwv tsis pub tawg lossis cementing tsheb. Lub 6-inch ncej txoj kab uas hla muab tshwj xeeb torsional zog, muaj peev xwm kis tau tus instantaneous torque ncov generated los ntawm 400 horsepower yam tsis muaj yas torsion.

Hauv kev xaiv cov kabmob, JWS-400 ntiav cov menyuam bearings hnyav hnyav ua nws cov kabmob tseem ceeb. Tsis zoo li pob lossis cylindrical roller bearings, tapered roller bearings tuaj yeem tiv taus ntau yam radial loads (los ntawm piston thrust) thiab axial loads (los ntawm sab rog hauv bevel iav lossis saw tsav tshuab). Qhov kev teeb tsa kabmob no yog qhov tseem ceeb tshwj xeeb rau cov tshuab siv bevel iav txo lossis cov saw tsav, vim tias ob qho tib si tsav txoj kev tsim cov axial thrust tseem ceeb.

txuas pas nrig thiab hla lub taub hau system

Cov kev sib txuas ntawm lub crankshaft thiab hydraulic kawg yog ib txheej ntawm precision txuas pas nrig thiab crosshead mechanism.

• Connecting Rods: Tsim los ntawm stainless hlau los yog cam khwb cia hlau nrog ib tug detachable tsim. Cov hlua txuas txuas txuas feem ntau muaj qhov ua tau zoo- ua haujlwm aluminium alloy bushings, uas muab cov khoom sib khi zoo heev rau cov khoom siv roj nplua nyeem thiab tiv thaiv crankshaft tus pin hnav.
• Crossheads: Tsim los ntawm cam khwb cia hlau nrog rau sab sauv thiab qis roj grooves. Kev sib txhuam khub tsim los ntawm cam khwb cia hlau thiab hlau qhia rails nthuav tawm qhov tshwj xeeb tsis tshua muaj kev sib txhuam coefficient thiab zoo hnav tsis kam nyob rau hauv kev pom zoo lubrication. Lawv lub luag haujlwm tseem ceeb yog tiv thaiv lub zog sab nraud uas tsim los ntawm cov pas nrig sib txuas, kom ntseeg tau tias tsuas yog cov axial thrust nkaus xwb yog kis mus rau nruab nrab txuas ntxiv rods ntawm hydraulic kawg.
• Intermediate Pull Rod: JWS-400 nta ib qho kev hloov pauv stainless hlau nruab nrab rub pas nrig. Qhov no yog qhov tseem ceeb vim tias tus pas nrig hnav tawm thaum dhau los ntawm cov roj foob muab faib. Cov khoom siv stainless hlau muab qhov tseem ceeb tiv thaiv corrosion, tiv thaiv xeb los ntawm ib puag ncig noo noo uas tuaj yeem ua rau cov roj foob puas.

chain tsav system

Qhov zoo tshaj plaws ntawm JWS-400 yog nws cov qauv saw reducer, xa qhov 4.667: 1 txo qhov piv.

• Torque multiplication: Qhov sib piv ntawm cov iav no txo ​​cov kev nkag siab ceev (feem ntau txuas nrog lub cav diesel) thaum ua kom lub zog loj los ntawm kwv yees li 4.6 npaug. Piv txwv li, nrog lub twj tso kua mis lub siab tshaj plaws ceev ntawm 286 RPM, lub input ncej nce mus txog ib ncig ntawm 1335 RPM - precisely nyob rau hauv lub siab -efficiency torque ntau yam ntawm tus qauv diesel cav.
• Chain tsav qhov zoo: Muab piv rau cov iav reducers, cov saw tsav muaj kev hloov pauv ntau dua, ua kom muaj txiaj ntsig zoo ntawm cov khoom poob siab hauv kev ua haujlwm hauv av (xws li, kev hloov pauv siab thaum lub sij hawm slurry twj nrog cov khoom sib xyaw). Tsis tas li ntawd, cov saw tsav lub 30-gallon (113.5-liter) roj muaj peev xwm ua kom muaj lubrication txaus rau cov cua sov dissipation thiab saw tu.

physics ntawm lubrication systems

Lub hwj chim kawg siv 'Flooded sump, splash distribution' lubrication system.

• Mechanism: Raws li JWS-400 yog qhov sib cuam tshuam - lub twj tso kua mis, nws tsis tuaj nrog lub zog quab yuam-siab lubrication system. Hloov chaw, nws siv qhov kev sib hloov ceev ceev ntawm lub crankshaft thiab txuas pas nrig los ua kom cov roj lubricating hauv cov roj reservoir, tsim cov roj pos huab thiab cov roj ntws tawm uas npog cov hla kev qhia kev tsheb ciav hlau, lub dab teg, thiab cov kabmob tseem ceeb.
• Kev txwv thiab kev tswj hwm: Splash lubrication hnyav nyob ntawm kev tswj cov roj. Cov roj theem tsis txaus ua rau lub lubrication tsis txaus, ua rau muaj kev puas tsuaj loj rau kev yaig, thaum cov qib ntau dhau ua rau cov roj agitation poob, ua rau kub hnyiab sai thiab ua npuas ncauj uas txo qis lubrication efficiency. Yog li, tus qauv "roj theem dipstick" thiab "crankcase breather" zoo li yooj yim tab sis tseem ceeb heev saib xyuas Cheebtsam 5. Lub tshuab nqus pa sib npaug siab hloov pauv hauv lub crankcase tshwm sim los ntawm qhov kub thiab txias, tiv thaiv roj foob.

Forged Steel Khoom thiab SAE 4330V Metallurgy

Lub hydraulic kawg ntawm JWS-400 yog forged los ntawm hlau. Nyob rau hauv siab - lub twj tso kua mis siab, cov khoom siv hauv kev lag luam feem ntau yog SAE 4330V (vanadium-modified) alloy steel.

• Cov Khoom Siv Khoom: SAE 4330V yog qis- alloy steel uas muaj nickel, chromium, molybdenum, thiab vanadium. Qhov sib ntxiv ntawm vanadium refines lub grain qauv, ho txhim khu cov khoom hardenability thiab cuam tshuam toughness. Rau cov hydraulic kawg valve lub thawv raug rau siab - lub voj voog qaug zog, kev cuam tshuam toughness yog qhov tseem ceeb rau kev tiv thaiv kev pib tawg thiab nthuav tawm hauv thaj chaw muaj kev ntxhov siab, xws li kev sib tshuam ntawm lub rooj zaum valve thiab lub plunger qhov.
• Cov txheej txheem tsim khoom: Forging tuaj yeem rhuav tshem raws li - cov qauv cam khwb cia, tso cai rau cov hlau ntws kom ua raws li cov duab ntawm ib feem, yog li muab lub zog siab tshaj plaws nyob rau hauv cov kev taw qhia ntawm qhov siab tshaj plaws. Nyob rau hauv sib piv, castings feem ntau pom micro- porosity thiab roj pores, ua tsis tau raws li qhov yuav tsum tau muaj kev ruaj ntseg ntawm 10,000 psi.

Kev sib tw ntawm Tapered Valve thiab Cage Valve

Cov neeg siv tshwj xeeb tsom rau qhov kawg hydraulic ntawm tapered valve. JWS-400 platform nta ob lub ntsiab valve configuration: tawb li qub thiab tapered li qub (tseem hu ua tag nrho qhib li qub). Cov qauv tsim no sib txawv hauv cov khoom siv dej thiab cov qauv siv tshuab.

Kev txwv ntawm Caged Valve

Hauv kev tsim lub tawb kaw ib txwm siv, lub rooj zaum valve yog mounted ntawm lub valve lub kauj ruam, ruaj ntseg los ntawm ib lub tawb cais saum toj no thiab kho los ntawm lub valve npog lub zog. Lub tawb feem ntau muab lub valve txoj kev taw qhia.

• Disadvantages: Lub tawb occupies ib feem ntawm cov kua dej, ua kom txaus tsis kam. Ntawm cov dej ntws siab, qhov no ua rau lub siab poob siab dua thiab txo qhov ua haujlwm ntawm lub twj tso kua mis. Tsis tas li ntawd, cov neeg kho tshuab kev sib cuag nto ntawm lub tawb thiab lub valve npog yog qhov ua rau micro- hnav nyob rau hauv kev co ntev.

Engineering Advantages ntawm Conical Valve (Tag nrho qhib hom)

Lub kaw lus tapered valve tsim, ua piv txwv los ntawm Lub Hom Phiaj Service Master series, tshem tawm tag nrho qhov xav tau ntawm cov tawb cais.

• Cov kev cuam tshuam haum rau lub cev: Lub rooj zaum lub rooj zaum lub tog raj kheej sab nraud muaj qhov tseeb taper (feem ntau API tus qauv taper) uas yog cov phooj ywg nrog cov sib txuas tapered bore machined hauv hydraulic kawg valve vaj tsev. Lub rooj zaum valve yog wedged rau hauv lub valve vaj tsev los ntawm qhov cuam tshuam haum. Los ntawm kev siv cov kev sib txhuam loj heev thiab cov npoo npoo, lub rooj zaum valve tiv thaiv cov dej tsis muaj kev cuam tshuam.
• Hydrodynamic Optimization: Kev tshem tawm ntawm lub tawb tso cai rau cov kua dej puv nkaus (Full Open), txo qis kev kub ntxhov thiab kev tiv thaiv thaum cov dej nkag mus rau hauv lub twj tso kua mis chamber. Thaum JWS-400 ua haujlwm ntawm qhov siab tshaj plaws 286 RPM, lub sijhawm nqus lub qhov rai yog luv heev (kwv yees li 0.1 vib nas this). Lub tapered valve txoj kev tsis muaj kev cuam tshuam tsis zoo ua rau txo qis qhov xav tau qhov zoo ntawm lub taub hau (NPSH), yog li txo qhov kev pheej hmoo ntawm cavitation. Cavitation tsis tsuas yog txo cov twj tso kua mis xwb tab sis kuj ua rau siab -siab micro-jets thaum lub npuas tawg, uas yog thawj pab rau sab hauv phab ntsa pitting thiab qaug zog tawg nyob rau hauv hydraulic systems.
• Tus kheej-locking effect: Raws li lub twj tso kua mis siab nce, lub downward hydraulic quab yuam ua nyob rau hauv lub valve lub rooj txuas ntxiv nias nws mus rau hauv lub conical bore, txhim khu lub sealing nyhuv thiab zoo tiv thaiv siab - cov kua dej los ntawm "kev ntxuav tawm" (Washout) los ntawm lub valve lub rooj zaum sab nrauv.

Frictional Design ntawm Valve Cheebtsam

JWS-400 ntiav Lub Hom Phiaj Pabcuam Master valve los ua ke uas muaj qhov tseeb-engineered valve lub cev thiab cov rooj zaum.

• Urethane Inserts: Lub valve lub sealing mechanism tsis yog nyob ntawm cov hlau - mus rau -hlau tab sis nyob rau hauv urethane inserts embedded nyob rau hauv lub valve lub cev. Piv nrog rau cov roj hmab nitrile, urethane nthuav tawm cov kua muag tsis zoo thiab hnav tsis kam, ua rau nws tsim tshwj xeeb rau cov kua dej uas muaj cov khoom siv (xws li cov xuab zeb tawg). Txawm li cas los xij, urethane yog qhov kub thiab txias -sensitive thiab feem ntau ua haujlwm nyob rau hauv thaj tsam ntawm 170℃F txog 180℃F (kwv yees li 77℃txog 82℃). Yog tias cov kua dej kub ntau tshaj qhov no, cov ntaub ntawv tuaj yeem muag muag thiab tsis ua haujlwm, ua rau kom xau.
• Valve rooj hardening: Lub rooj zaum valve feem ntau yog carburized kom ua tiav Rockwell C 60 hardness. Qhov tshwj xeeb hardness no yog tsim los tiv thaiv abrasive hnav tshwm sim los ntawm siab - ceev ceev cov kua entrainment ntawm cov xuab zeb hais thaum lub valve kaw.

plunger thiab packing system

For high-pressure applications (>5,000 psi), JWS-400 yuav tsum tau nruab nrog lub plunger hloov lub piston.

• Qhov sib txawv tseem ceeb yog tias lub piston nta cov roj hmab - lub tais cov kab sib txuas sib txuas hauv lub tog raj kheej liner, nrog kev sib khi tshwm sim ntawm lub tais thiab liner. Nyob rau hauv sib piv, lub plunger yog ib tug hardened hlau pas nrig kaw los ntawm ib tug nyob ruaj ruaj khoom thawv.
• Packing Box Design: JWS-400's packing box yog tsim los ntawm cov hlau nplaum thiab nta cov caj pas threaded tsim. Cov pob khoom feem ntau muaj xws li "di ncauj hom" lossis V- nplhaib, feem ntau nruab nrog lub caij nplooj ntoos hlav-loaded mechanism 10. Lub caij nplooj ntoos hlav muab lub axial preload tas mus li, tau txais kev them nyiaj rau kev hnav kom tswj tau lub zog ntawm lub plunger. Qhov kev tsim no yog qhov tseem ceeb rau kev txo qis txij nkawm ntau zaus.
• Plunger Lubrication: Lub 'Plunger Lubricator' tau teev nyob rau hauv cov npe khoom yog ib qho tseem ceeb rau kev ua haujlwm siab -. Nws xa cov roj lubricating mus rau tom qab ntawm lub thawv ntim khoom, tsis yog tsuas yog txo kev sib txhuam kub los ntawm lubricating lub plunger nto, tab sis kuj tshem tawm cov xuab zeb zoo uas yuav embed nyob rau hauv lub ntim, yog li tiv thaiv nto khawb.

Kev ua tau zoo ntawm JWS-400 yog txiav txim siab los ntawm ob qho tib si txhua yam torque txwv thiab hydraulic siab txwv. Kev nkag siab txog cov kev txwv no yog qhov tseem ceeb rau kev ua haujlwm nyab xeeb.

Qhov Sib npaug ntawm Kev Siab Siab thiab Kev Tawm Tsam

Thaum lub hydraulic kawg tuaj yeem ua tiav qhov ntsuas siab ntawm 10,000 psi, qhov no tsis tau lees tias lub siab yuav raug tswj hwm ntawm txhua theem kev hloov pauv.

• Qhov tso zis siab ntawm lub twj tso kua mis yog inversely proportional rau tus ntoo khaub lig-sectional cheeb tsam ntawm lub plunger.

4.5-nti plunger: qhov siab tshaj plaws hloov chaw teeb tsa. Raws li qhov kev teeb tsa no, lub twj tso kua mis ntsuas qhov siab poob qis qis dua 10,000 psi, txwv los ntawm 400 HP tag nrho lub zog tawm tswv yim thiab cov pas nrig txuas cov ntsuas ntsuas.

3.75-inch lossis me dua plungers: Yuav kom ua tiav 10,000 psi ua haujlwm siab, yuav tsum siv cov plungers me me. Qhov no tsis yog tsuas yog txo cov kev ntxhov siab nyob rau sab hydraulic nkaus xwb tab sis kuj tseem tswj tau lub piston thrust (Qws Load) nyob rau hauv lub hwj chim sab qhov ntsuas ntau yam.

Table 1: Cov Kev Ua Haujlwm Tseem Ceeb Sib piv ntawm JWS-400

Pulsation thiab damping

Raws li peb lub-lub tog raj kheej ib leeg- ua lub twj tso kua mis, JWS-400 tsim cov dej ntws tawm hauv nruab nrab (kwv yees li 23% ntawm qhov nruab nrab ntws) thaum ua haujlwm. Yog tias qhov no tsis tau tswj xyuas, nws tuaj yeem ua rau muaj kev vibrations loj hauv lub siab siab manifold, ua rau qaug zog tsis ua haujlwm.

Suction Stabilizer: Muab tso rau ntawm lub tshuab nqus dej kom nqus cov kev hloov pauv siab los ntawm cov kua dej nrawm, ua kom tiav cov kua puv hauv lub tog raj kheej thiab tiv thaiv cavitation.

Discharge Dampener: Muab tso rau ntawm qhov chaw nres nkoj tawm, cov cuab yeej no siv nitrogen- lub zais zis ua ntej kom nqus tau siab - siab pulsation peaks, ua kom cov kua dej tsis tu ncua.

Lub tswv yim txij nkawm rau JWS-400 lub chaw ntawm kev hloov 'expendables' -cov khoom tsim los rau tus kheej- kev txi rau kev tiv thaiv ntawm kim forged steel hydraulic kawg. Tag nrho cov kev thauj khoom tseem ceeb-cov khoom siv thiab cov khoom siv tswj lub siab yuav tsum ua raws li API Spec 7K 'Drilling and Well-Service Equipment' standard.

Cov txheej txheem tu tshwj xeeb ntawm Conical Valve Rooj

Qhov kev sib tw loj tshaj plaws hauv kev tsim cov khoom siv tapered li qub yog hloov lub rooj zaum valve. Txij li nws tso siab rau qhov siab - lub zog cuam tshuam haum rau kev kho, lub rooj zaum valve tsis tuaj yeem raug tshem tawm yooj yim li hauv lub tawb li qub.

• Cov cuab yeej tshwj xeeb: Cov ntaub ntawv qhia meej meej tias lub rooj zaum taper valve yuav tsum raug tshem tawm siv M-1100 hydraulic puller nrog M-1097 rub lub taub hau.
• Kev pheej hmoo ua haujlwm: Tsis txhob sim yuam kom tshem tawm lub rooj zaum valve uas siv cov nplaim taws txiav lossis cov cuab yeej siv kho tshuab. Nplaim taws txiav tuaj yeem ua rau cov qauv metallurgical ntawm cov cua sov- kho lub tsev nyob, txo nws cov qauv kev ncaj ncees. Mechanical quab yuam kuj tuaj yeem khawb sab hauv ntawm lub conical bore. Txhua qhov kev puas tsuaj rau lub conical bore yuav tiv thaiv lub valve lub rooj zaum tshiab los ntawm kev ua tiav lub foob zoo meej, ua rau kom muaj dej thiab tsis ua haujlwm ntawm tag nrho cov hydraulic system.
• Cov Lus Qhia Txog Kev Txhim Kho: Thaum txhim kho lub rooj zaum tshiab, xyuas kom lub qhov khoob ntawm lub valve lub tsev yog huv si thiab qhuav (roj-dawb thiab dej-dawb). Txhua lub roj tuaj yeem tsim cov zaj duab xis lubricating ntawm cov npoo conical, txo kev sib txhuam thiab ua rau lub rooj zaum valve kom loosen nyob rau hauv siab - cuam tshuam. Feem ntau, cov cuab yeej rauj siab yuav tsum tau ua ua ntej - zawm lub rooj zaum valve, ua raws li qhov kawg nruj thiab qhov chaw siv lub twj tso kua mis nws tus kheej hydraulic siab.

Daim ntawv teev cov consumables thiab interchangeability

JWS-400's consumables suav nrog V-siv, V-siv rooj zaum, plunger packing, thiab lub tog raj kheej liner seals. Ntau yam thib peb- cov neeg muab khoom lag luam muab API 7K-raws li qhov hloov pauv (xws li Goldenman, Zoo dua, thiab lwm yam). Qhov kev tivthaiv dav dav no ua rau txo qis JWS-400 tus nqi ua haujlwm ntawm lub neej.

Table 2: JWS-400 Standard Maintenance Parts and Tools List

Common Fault Modes and Prevention

Hydrodynamic kawg tawg: qhov kev puas tsuaj loj tshaj plaws, feem ntau tshwm sim ntawm kev ntxhov siab- cov qhov sib xyaw ua ke. Kev tiv thaiv muaj xws li kev kuaj ultrasonic lossis magnetic particle test (NDT) thiab tsis txhob ua haujlwm ntau dhau.

Cov dej ntws los ntawm lub rooj zaum valve: Qhov no tshwm sim vim kev teeb tsa tsis raug lossis tsis ua haujlwm ntawm lub sealing insert. Cov kev tiv thaiv muaj xws li nruj me ntsis raws li cov txheej txheem ntxuav installation thiab hloov tam sim ntawd hnav polyurethane inserts.

Lub hwj chim chav tsev overheating: feem ntau tshwm sim los ntawm cov roj tsawg lossis cov roj lubricating tsis huv. Ua raws li lub sijhawm hloov roj thiab saib xyuas qhov kub ntawm crankcase.

JWS-400 nyob hauv ib qho tshwj xeeb hauv cov twj tso kua mis downhole tsev neeg. Thaum cov kev ua haujlwm tawg niaj hnub no feem ntau siv cov twj quintuplex (tshaj 2000 horsepower), JWS-400 tseem yog qhov tseem ceeb rau kev ua haujlwm me me.

• Cementing: Cov txheej txheem no yuav tsum muaj kev tswj xyuas kom meej meej thiab nruab nrab - mus rau -siab siab, nrog rau JWS-400's 400 horsepower muab cov nqi tsim nyog.
• Coiled tubing kev ua haujlwm feem ntau yuav tsum tau ua kom muaj zog txaus. JWS-400's compact design tso cai yooj yim installation ntawm coiled tubing tsheb chassis.
• Acidizing: Lub hydraulic kawg ntawm forged steel thiab stainless hlau Cheebtsam muab qhov tseem ceeb corrosion kuj, ua ke nrog acid - resistant packing thiab roj hmab seals, ua kom cov kua qaub siv tau zoo.

JWS-400 muab lub zog siab dua li nws cov sib koom JWS-340 lossis JWS-165, thaum muab kev txav mus los zoo dua thiab kev xa mus yooj yim piv rau cov twj loj dua. Nws 4.667: 1 saw piv tsim ua kom muaj kev sib haum xeeb ncaj qha nrog cov qauv tsheb diesel cav fais fab tso tawm, ua kom lub cev sib kis tau zoo.

Cim npe nrov: nov jws-400 tapered li qub thiab rooj zaum twj tso kua mis, Tuam Tshoj nov jws-400 tapered li qub thiab rooj zaum twj tso kua mis manufacturers, lwm tus neeg, Hoobkas