Report goes pump is common breakdown
1, pump cannot be started
Breakdown analysis:
Power source voltage is too low leave; Power source cuts off the power; Impeller gets stuck dead; Cable ruptures; Electric pump by sea organisms or sea mile sundry twine; Two termination line shakes cable; Stator winding is burned-out.Means of settlement:
Adjust voltage to be in the ± of rated voltage 10% between; Search power source to cut off the power reason; Tear open pump, keep clear of card annulus is sundry; The examination prevents sea organisms device to whether be started and effective, necessary word, put marine robot to explore whether the eyewinker is twined; Examination, new garrison post connects a line however; Remove pump, send manufacturer or maintain an unit to change winding.2, pump gives water little
Breakdown analysis:
Lift is exorbitant; Pump imports block; Impeller turns to a mistake; Impeller wears away; Buccal annulus wears away, divulge; Pump housing leak.Means of settlement:
Adjustable valve. If still insoluble, want to check whether the outlet pressure of pump accords with design requirement, change pump when necessary; Clean entrance colander, dredge imports cop; Adjust electromotor appearance sequence; Change new impeller; Check maintenance, make buccal annulus photograph covers up to mark to screw pump housing joins bolt, if still cannot up to mark, return a factory to change only pump housing.3, burn down of electromotor stator winding
Breakdown analysis:
Ground wire fault is received or power supply cord is short of; Mechanical and sealed leak, cause short circuit of alternate with of electromotor v/LIT all over the ground occasional; Run time of electric pump dehydrate is too long; Electric pump excess load runs; Cable damaged drinks water; Electric pump leaves stop frequent.Means of settlement:
Return a factory or send maintenance the unit, check eduction breakdown, reinstall winding, reuse.
4, insulation resistance is too low (≤ 2M Ω )
Breakdown analysis:
The axis is sealed (mechanical and sealed) attaint is slack; Cable insulation damaged; Cable head drops water in; Phreatic water electromotor ooze water.Means of settlement:
After stoving, change the axis is sealed, after experimenting via atmospheric pressure, use; Change cable; Remove the moisture in the air in cable; Check place of electromotor ooze water, adopt necessary step to seal ooze. Stator drying, go after tide reuse.Centrifugal pump is common breakdown
1, pump is not bibulous
Breakdown analysis:
Suction valve has sundry or did not open, or inspiratory canal jams sealing differs pipeline system to be sealed from the axis handle trouble of system of pump of induction air fillMeans of settlement:
Open suction valve, eliminate sundry, dredge is inspiratory canal. Procuratorial work pipeline, especially section tries control join flange part, shot-off of loss. Change the axis is sealed, impaction filling is sealed examination and system of maintenance fill pump2, pump cannot be started
Breakdown analysis:
Prime mover malfunctions (include power supply) ; Pump gets stuck; Filling case is pressed too closely; Discharge valve door did not shut.Means of settlement:
Examine power source and prime mover case; Again turning decides shaft coupling case; Loosen filling; Be in charge of valve of imports and exports, start again.3, pump does not discharge fluid
Breakdown analysis:
Fill pump is insufficient (or the gas inside pump was not discharged clean) ; Pump changes direction incorrect; Revolution speed is too low; Mesh, inspiratory canal jams; Inspiratory height is too tall, or supply deficiency of liquid of air suction opening, create inspiratory vacuum.Means of settlement:
New fill pump; Decide the direction of rotation of pump again; Check electric machinery free speed, check the decelerate of reducer to compare, whether does certain revolution speed accord with design rotate speed; Clean mesh, dredge is inspiratory canal; Adjust cop of air suction opening, the entrance of prep above pump, adjust the system of upside feed flow of pump, make sure medium is supplied sufficient.4, after pump discharges fluid, interrupt
Breakdown analysis:
Inspiratory pipeline is flat; Inspiratory side gas was not discharged when fill pump; Inspiratory side is stemmed suddenly by the eyewinker, or colander of air suction opening jams; Inspiratory canal dehydrate, a large number of gas are inspiratoryMeans of settlement:
Examine inspiratory side joint and the sealed case that filling cases; New fill pump; Stop pump, clean filter core, dredge is inspiratory pipeline; Check inspiratory pipeline whether burst, whether is valve of on-line of shunt-wound inlet tube opened (not commonly used cop) .5, discharge is insufficient
Breakdown analysis:
Systematic clean lift increases; Obstruction loss increases; Buccal annulus and impeller had worn away big; Leak elsewhere fluid; Pump impeller jams, wear away, corrode.Means of settlement:
Check fluid height and systematic pressure; Procuratorial work pipeline and check valve have without reason block; Change buccal annulus and impeller; Examination axis seals and other places square; Clean, examination, exchange.6, lift is insufficient
Breakdown analysis:
Impeller outfit is turned over (double suck pump) ; Liquid density, viscosity and design condition not agree with; Operation flow is too large.Means of settlement:
Check impeller; The examination concerns physical property; Intercessory valve, reduce sulfur content.7, moving excess load
Breakdown analysis:
Motive quality is poor, decide rotor attrition; Impeller and bear grind annulus, impeller and pump case to have attrition; Liquid density increases; Filling is pressed too closely or do attrition; Bearing attaint; Rotate speed is exorbitant; Pump shaft bends; Be no longer in force of axial equilibrium plant; Shaft coupling is right in undesirable or axial space is too little; Carry liquid viscosity exorbitant or density is too big.Means of settlement:
The examination changes electromotor; Check the part inside pump and try to repair; Check density; Loosen water of filling, examination to seal a canal; Examination and change bearing; Rotate speed of procuratorial work prime mover and power source; Corrective pump shaft; The examination balances canal of empty, backwater to whether jam; Check shaft coupling, adjust in be opposite; Change high-power electromotor.8, pump vibration or noise exceed bid
Breakdown analysis:
Foundation bolt becomes loose or base solders unqualified; Pump happening sheds corrode (flow is too large, inspiratory obstruction increases or liquid operation temperature passes tall) ; Pump happening breathes heavily brace up (pump of prep above of pressure of systematic clean lift involves dead pressure) impeller damages or have a foreign body.Means of settlement:
Screw foundation bolt, solder to be checked afresh to base, if necessary, base solders afresh; Examine a reason and eliminate to make; Examination eduction also is and pressure is exorbitant; Ravel pump housing examination, change, purify eyewinker.9, bearing overheat
Breakdown analysis:
Bearing is assembled unqualified; Lube is insufficient, oleaginous difference or ageing; Cooling water measures inadequacy or open circuit.Means of settlement:
Examination, adjust; Add enough oil or oil change; Examination hind increases water amount.10, the axis seals overheat
Breakdown analysis:
Filling is sealed press too closely; Mechanical and sealed have trouble.Means of settlement:
Adjust sealed pressure; Examination, repair or change mechanical and sealedThe common breakdown of screw pump and gear pump
1, pump does not absorb fluid
Breakdown analysis:
Electromotor is not rotational; Electromotor inverts; Inspiratory pipeline jams and flat; Suction height allows viscosity of meson of suction vacuum height more than too big.Means of settlement:
Check power source, circuitry and electromotor; Adjust sequence of electric machinery appearance; Check inspiratory pipeline and colander; Reduce suction height; Add appropriately to meson lukewarm.2, discharge is insufficient
Breakdown analysis:
Electromotor rotate speed is insufficient; Screw (or gear) cover with pump wear away; Relief valve attaint or demarcate are too low.Means of settlement:
Whether does rated rotate speed accord with affirmatory electric machinery design requirement, inspection report makes voltage whether satisfy electric machinery to ask; Change relevant component; New demarcate relief valve, make achieve design requirement. If damage, change or maintain.3, pressure wave motion is big
Breakdown analysis:
Inspiratory pipeline is flat; Pump screw and pump cover different heart; Relief valve is good without demarcate, or actuating pressure is too great, when making leave when safe method, shut.Means of settlement:
Check pipeline and had maintained; The overhaul is adjusted or change; New demarcate relief valve or reduce actuating pressure.4, mechanical and sealed leakage is oily
Breakdown analysis:
Mechanical and sealed attaint; Sealed gland not planish; Assemble the position incorrect.Means of settlement:
Change mechanical and sealed; Adjust sealed gland; Ask to assemble by the technology afresh.5, pump overheat
Breakdown analysis:
Pump screw and pump are covered cooperate too close; Mechanical and sealed spill port jams; Meson temperature is exorbitant.Means of settlement:
The examination adjusts pump screw and pump to cover gap, necessary word, should change component; Dredge spill port; Take necessary step, drop meson temperature.6, pump vibration is big
Breakdown analysis:
Pump and electromotor are not homocentric; Gas is free inside pump; Screw and pump cover different heart or gap is big; Installation height is exorbitant, cavitation erosion arises inside pump.Means of settlement:
Adjust the position, in be opposite afresh; Check inspiratory pipeline, eliminate flat position; The overhaul is adjusted or change; Reduce installation height.7, moving excess load
Breakdown analysis:
Meson viscosity is too big; Eliminate pipeline to jam; Screw and pump cover generation to chafe badly.Means of settlement:
Warm up meson appropriately; Stop pump, dredge eduction pipeline; Overhaul or change relevant component.Metric pump and reciprocating pump are common breakdown
1, pump does not discharge fluid or pump is interrupted after platoon fluid
Breakdown analysis:
Electromotor is not rotational; Inspiratory canal jams or suction valve door did not open; Inspiratory tube is flat; Suction valve or discharge valve damage or sealed and lax; The oil of filling oil system has foreign matter, sealed and lax; Insufficient or electromotor rotate speed is flabby; Inspiratory fluid area is too small.Means of settlement:
Check power source, circuitry and electromotor; Check inspiratory canal, filter, open suction valve; Check inspiratory pipeline, seal; Maintain suction valve or discharge valve, change when necessary; Change clean oil; Examination distribution report is made with voltage, stabilize electromotor rotate speed; Adjust inspiratory fluid range.2, discharge is insufficient
Breakdown analysis:
Inspiratory canal is too long, crooked road is too much; Air of the remaining inside diaphragmatic antrum; The place such as fluid infusion a powerful person or diaphragmatic antrum is flat leakage fluid; Movements of a powerful person of relief valve, compensation is abnormal; Leak of place of force plunger filling is serious.Means of settlement:
Tote thick inspiratory pipe, reduce roundabout way; New fill fluid, remove gas; Find out leak component and the examination is sealed severe; Adjust afresh relief valve and compensation a powerful person; Adjust filling gland or change new filling cases.3, pump pressure power is insufficient
Breakdown analysis:
Suction valve, discharge valve damages; Diaphragmatic place or eduction pipe fittings are sealed and lax.Means of settlement:
Change new a powerful person or family; Find out leak component, the overhaul, seal severe.4, metric loss of accuracy
Breakdown analysis:
Force plunger zero shift.Means of settlement:
Readjust force plunger at 0 o'clock.5, spare parts overheat
Breakdown analysis:
Each kinematic pair is lubricant the situation is bad; Filling is pressed too closely; Insufficient or the oil of gasoline tank of main transfer machinery is too much, oleaginous and bad.Means of settlement:
The examination cleans each oil aperture, add pour lubricating oil; Adjust filling gland; Change to enter lube newly, oily amount is appropriate.6, pump vibration or have concussion sound, noise is big
Breakdown analysis:
Each kinematic pair wears away serious; A powerful person rises Cheng Taigao; Pump installation foundation is flabby, foundation bolt becomes loose; Piston nut or piston screw nut become loose; Piston stroke passes big or vaporization manages to find time.Means of settlement:
Adjust relevant campaign or change relevant component; Adjust height rising Cheng, avoid the lag of a powerful person; Screw foundation bolt. Solder afresh when necessary base or structural bridge increases below base; Screw piston nut or piston lever nut; Adjust piston stroke or frequency of move back and forth.
