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US 2011/0308967A1 Dec.22,2011 phasechangestoaliquidandaliquidphasechangesbackto [0033] Incertainoftheembodiments,thesacri?cialbody a gas during cavitation. The energy of the phase change demands the release of hydrogen ions, Which is a corrosion phenomenon.Thesacri?cialbodyismadefrommaterialsthat more readily release ions than does the steel of the ?uid chamber; Which directs the damaging cavitation corrosion pittingtothesacri?cialbody. [0017] Inyetanotherembodiment,thecomponentincludes a ?uid end block having a chamber, a plunger bore leading to thechamber,asuctionvalveportleadingtothechamber,and adischargevalveportpassingfromthechamber. [0018] In certain embodiments, the method includes mountingthesacri?cialbodyWithinthechamber. [0019] In certain embodiments, the method includes mountingthesacri?cialbodystationarilyWithintheplunger boresurroundingtheplunger. [0020] In certain embodiments, the method includes mounting the sacri?cial body to the suction valve for move ment thereWith. [0021] In certain embodiments, the method includes mounting the sacri?cial body Within the suction valve port upstream from a suction valve. [0022] Inanotherembodiment,thecomponentincludesa plungerintheplungerbore. [0023] Inyetanotherembodiment,themountingstep includesmountingasacri?cialbodytotheplunger. [0024] Incertainoftheembodiments,thecomponent includes a housing having a rotatable impeller therein. [0025] Incertainoftheembodiments,themethodincludes mounting the sacri?cial body Within the housing adjacent a peripheryoftheimpeller. [0026] Incertainoftheembodiments,themethodincludes mounting the sacri?cial body to the impeller for rotation thereWith. includes a sleeve mounted stationarily Within the plunger boresurroundingtheplunger. [0034] Incertainoftheembodiments,thesacri?cialbodyis mountedtoaforWardendoftheplungerformovement there With. [0035] Incertainoftheembodiments,thesacri?cialbodyis mounted to the suction valve for movement thereWith. [0036] Incertainoftheembodiments,thesacri?cialbodyis mounted Within the suction valve port upstream from the suctionvalve. [0037] Inathirdaspect,anembodimentprovidesapump includingahousing,arotatableimpellermountedWithinthe housing, and a sacri?cial body mounted Within the housing forimmersioninuseWithin?uid?oW astheimpellerrotates. The sacri?cial body formed of a material less resistant to corrosion due to the ?uid ?oW than the impeller and the housing. [0038] Incertainoftheembodiments,thesacri?cialbodyis mounted to an interior portion of the housing adjacent a peripheryoftheimpeller. [0039] Incertainoftheembodiments,thesacri?cialbodyis mounted to the impeller for rotation thereWith. [0040] Inafourthaspect,anembodimentprovidesanappa ratus for retarding damage to a pump due to cavitation includes a sacri?cial body adapted to be mounted Within the pump,thesacri?cialbodybeingformedofamaterialselected toshedelectronsWhen immersedWithina?oWing ?uidofthe pump. At least one needle is mounted to the sacri?cial body and formed ofamaterialmore resistanttocorrosionduetothe ?oWing ?uid than the sacri?cial body. [0041] In certain embodiments, the sacri?cial body [0027] Inasecondaspect,anembodimentprovidesapump includesasleevehavingapro?leformedonanexteriorsur havinga?uidendblockcontainingachamber,aplungerbore leading to the chamber, a suction valve port leading to the chamber, and a discharge valve port passing from the cham ber. The suction and discharge valves are mounted for recip rocation Within the suction valve port and discharge valve port,respectively. [0028] A sacri?cialbodyismountedWithinthe?uidend blockforimmersionduringuseinthe?uid?oW astheplunger strokes. The sacri?cial body is formed of a material less resistanttocorrosionascomparedtothe?uidendblock.The embodiment advantageously provides a pump having a tar getedareaofcavitationtomitigatecavitationonthe?uidend block, Which extends the Working life of the ?uid end block. Moreover, the sacri?cial member targeted for cavitation can be replaced over the life of the ?uid end block. [0029] In certain embodiments, at least one needle is mounted to the sacri?cial body, the needle in use being immersed in the ?oWing ?uid and pointing in a doWnstream direction. face to enhance turbulence of ?uid ?oWing over the sleeve, the pro?le adapted to be upstream of the at least one needle. [0042] In certain embodiments, the sacri?cial body includes a disk having a circular periphery and adapted to be mountedtoaninnerendofaplungerofthepump. Theneedle is mounted to a face of the disk in alignment With an axis of thedisk. [0043] Incertainembodiments,theneedleisrecessed Withinacavityformedinthefaceofthedisk.A ?oWport extendsthroughaportionofthedisktoabaseofthecavityfor directing?uidtotheneedle. [0044] In certain embodiments, the sacri?cial body includesaringadaptedtobemountedtoadoWnstreamfaceof an suction valve of the pump. The needle is mounted to the faceoftheringinalignmentWithanaxisofthering. [0045] Incertainembodiments,a?oWportleadsfromone sideoftheringtothefaceoftheringadjacenttheneedle,the ?oW portbeingoutboardofaninnerdiameterofthering. [0046] Incertainembodiments,thesacri?cialbodyis mounted on a support rod. The support rod adapted to be mounted to an interior portion of the pump. [0030] Incertainembodiments,theneedleisformedofa metal more resistant to corrosion due to the ?uid ?oWing over theneedlethanthesacri?cialbody. [0031] Incertainoftheembodiments,apro?lecon?gured [0047] Incertainoftheembodiments,thesacri?cialbodyis to enhance turbulence is located on an up stream portion of the sacri?cialbody. [0032] In certain embodiments, the sacri?cial body is formed from one ormore materials from the group compris ing Zinc, aluminum, magnesium or alloys thereof. formed from of a material from the group consisting of Zinc, aluminum,magnesiumoralloysthereof. [0048] Otheraspects,features,andadvantagesWillbecome apparentfromthefolloWingdetaileddescriptionWhentaken in conjunction With the accompanying draWings, Which are aPDF Image | PUMP CAVITATION DEVICE
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