We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears manufacturing facility in China with 5 different branches. For far more information: Cell/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828

Centrifugal pumps solitary stage horizontal split circumstance

Centrifugal pumps solitary stage horizontal split scenario item Introduction: 

Centrifugal pumps one phase horizontal split case is a new era of high performance solitary phase double suction centrifugal pumps which largely used in delivering liquids of the h2o plant, air conditioner circulation drinking water, heating pipe community technique, creating h2o offer, irrigation and drainage of pump stations, energy crops, industrial h2o offer technique, fire battling program, delivery market and mine. It is a new substitute of SH, S, SA, SLA and SAP.

Main overall performance parameters

Diameter of pump outlet: DN80 to DN900
Pump Capability: Q: 22-16236m3/h
Pump raise head range: H:7-300m
Pump functioning force: P≤5Mpa
Pump working temperature: T-20-200deg C
Pump working voltage: 380V to 10000V, 50Hz & 60Hz

Pump Supporting Plan and Companies

We value the vitality saving and environmental defense,by analyzing the demands of media and procedure atmosphere,adopt optional mixtures of materia EPT at the areas get in touch with with media,insure protection,reliability,cost-effective operation.

Design Drawings

Structural Features: 

Centrifugal horizontal split scenario pump function stably with significantly less noise and vibration,may possibly be appropriately function at increasing pace because of to quick spacing amongst equally facet supports,thus they can commonly used. Inlet and outlet at the exact same line,the identical rotor of the XS pumps can be operated in reverse route,the XS pumps functions stably with much less noise and vibration and can perform at raising speed thanks to quick spacing in between the two facet support, which make the pumps can be commonly employed. The XS pumps undertake the way of center assistance, thicken the pump casing, and use cooling sea EPT and oil lubrication bearing which make XS pump ideal operating at 200ºC,especially for source heating internet technique. XS sort pumps can be vertically  or horizontally mounted according to diverse operating situation, with mechanical sea EPT or packing seals.

Performance Data

Kind	Capacity (m³/h)	Head (m)	Velocity (r/min)	shaft energy (kw)	Motor power (kw)	EFF(%)	NPSH(m)
XS product	22-16236	seven-300	2900/1450/985/485	two.9-3737	5.5-4000	sixty eight-ninety two	one.7-11

Safety measures
 

1. Inspection before starting
 

Be certain to verify the followings:
 

(1) Insure pump plate set on foundation

(2) Insure coupling and pump device alignment

(3) Insure piping connected by requirements

(4) Insure motor installed by Set up and operation instruction

(5) Insure the rotor of pump rotate very easily (at lea EPT a circle)

(6) Insure the coupling guard put in

(7) Insure the operator completely understand the basic safety specification that they should obey and the failures could be transpired

(8) Insure the shaft seal liquid or cooling liquid guide-in by requirements

(9) Insure the shaft seal set up by operation instruction

(ten) Insure the auxiliary gadget set up by procedure instruction (If they exist)

(eleven) nsure the bearing have lubricated effectively, especially insure new pump grease or slender oil do not lessen or go negative

(12) Insure the air trapped in pump escaped.

 

two. Shaft Seal
 

Open up valves effectively for stuffing box seal

 

3. Air exhaust
 

Pump and piping should fill of medium before starting, there are two methods: generation of vacuum or priming. If the pump operated on the suction point out, exit fuel by bolt hole on leading of the pump casing.

Be aware: When creation of vacuum, evacuate air by bolt gap on prime of the pump casing. When priming, open up equally side minimal pressure volute chamber of pump casing and the leading plug, to get rid of pump vibration by remained air in pump.

 

4. Commencing
 

(1) Shut outlet valve

(2) Open inlet valve comple tel: +86~thirteen 0571 88828y

(3) Open up all auxiliary piping (cooling, heating, sealing, rinsing and lubricant liquid), and check out all ability and strain

(4) Commencing pump soon after finishing earlier mentioned methods

(5) When the system beginning provide medium and the force reading through at stress gauge increase up, open outlet valve slowly and gradually.

Note: Forbid pump operating without liquid! Only near outlet valve when the pump commence and shutdown, in any other case will hurt the pump by overheating.

 

5. Procedure

(1)

Affirm working position

 

In accordance to Q-H overall performance curve of pump, ability Q varies with the true procedure head. The head depended on the method head (including the altitude distinction among inlet and outlet, piping, valves, radiator and so on). So the pump really functioning stage B depends on pump performance

curve Q-H and method performance curve Q-HA.

As soon as ability settled, the shaft electrical power, efficiency, EPT EPT settled as properly. Pump has constrained functioning range. The minimum capacity are demonstrated as Qmin in Q-H performance curve. Greatest capacity are depended on the cross position of pump tolerance EPT EPT and method valid NPSHA. Adju EPT valve can modify efficiency curve Q-HA of technique, thereby adju EPT procedure functionality, tends to make pump procedure steady and substantial performance.

(2) Operation management
 

Must pay out consideration to followings:
 

a. Pump need to function stably

b. Forbid pump operating without having liquid

c. To avoid medium temperature rise up, pump can not be run prolonged time period when close outlet valve

d. Typically, the bearing temperature not greater than 35ºC of ambient temperature, absolute

procedure temperature much less than 100ºC.

e. Verify oil stage regularly if use thin oil. Deep groove ball bearing of grease lubrication no require schedule maintenance.

f. Do not near inlet valve (if it is exist) when pump working.

g. Periodical inspection and commence jury pump.

h. Examine auxiliary piping regardless of whether connected effectively.

i. Verify elastic component of coupling, if worn substitute immedia tel: +86~13 0571 88828y.

j. For stuffing box seal there must have a slight drip when running, press stuffing box gland carefully until finally there is a slight drip (about 15-thirty fall/min ).

For mechanical seal the seal leakage need to decrease slowly. It is about -5drop/min following

starting number of hours. If the seal leakage enhance gradually and reach about thirty-60drop/min, need to verify or adju EPT mechanical seal.

 

6. Shutdown
 

Near discharge valve.
 

Insure the pump unit end efficiently when shutdown the motor. Pump ought to have a suitable after-managing time period, lower warmth supply at this time, so that the sent medium can amazing down comple tel: +86~thirteen 0571 88828y and keep away from of making any heat inside pump.

Shut suction valve if pump cease function for a lengthy time period of time.

Near auxiliary piping, the shaft seal must use seal lubricant even though at stopped condition. Evacuate all medium in pump and piping when freeze or end function for a extended-expression, so as not to fro EPT crack.

 

seven. Storage
 

Every single pump has inspected strictly just before supply. Advise to adopt following methods to keep pump.
 

(1) Keep new pump

If retailer pump at indoor, clean dry spot and comply with the storage specifications, the longe EPT storage time is twelve months.

(2) If products is to be stored for long periods of time should adhere to under processes.

a. Pump need to hold in set up condition and examine function issue regularly. Start pump as soon as each and every month or every single 3 months (about 5 minutes). Examine working condition just before starting pump to insure there is sufficient liquid.

b. Dismantled pump from piping and examine it in accordance to area 5.1 to 5.4. Use protective agent on within pump casing specially the hole of the impeller, utilize on suction and discharge, then cover the suction.

c. Operation soon after storage

Inspect and keep comple tel: +86~thirteen 0571 88828y ahead of beginning pump, specifically shaft seal and bearing lubricant. Reinstall all protection defense products according to need just before commencing.

Troubleshooting

 

Difficulty	Triggers	Solution
starting load too large	1. Starting without closing discharge valve two. packing too tight lead to lubricant water can not movement into three. Misguide by failing of overcurrent protector	1. Shut the valve two. Loose packing or examine the valve of h2o seal, check if packing ring again EPT the nozzle of lubricant drinking water, three. Adju EPT recent restricting threshold or restore overcurrent protector.
Packing overheating	one.Packing  too tight two.Cooling water can not flow into packing box three. Harm in the area of shaft or shaft sleeve	one. Free packing correctly 2.Unfastened packing or check out if the drinking water seal pipe clogged 3.Fix shaft or shaft sleeve
Packing leakage excessive	one. Packing worn two. Packing as well free 3. Shaft curved or vibration 4. Mistaken packing bind five. Unclean seal water wore shaft 6. Shaft sleeve worn 7. Mistaken packing eight.The force of seal chamber too large or as well reduced	1. Exchange packing two. Tighten packing box gland or incorporate much more packing three.Align or exchange shaft 4. Rebind packing 5.Filtrate or use exterior source as seal h2o, repair 6.Exchange shaft sleeve 7.Change packing eight. Adju EPT the strain and capability of seal liquid or use a sealing liquid from an external source.
Mechanical seal leakage	one. The nominal stress of mechanical seal lower than actual function stress 2.Unreasonable reduction of Mechanical seal mounting,friction parts not contact efficient 3. The ru EPT of shaft sleeve area result in rotating seal ring of mechanical seal sealing failure four. The delivered medium physical and chemical residence leads to O-ring loss elasticity five. The sent medium physical and chemical property brings about spring mechanical seal of reduction elasticity  6. Impurity enter friction factors and broken their floor 7. The liquid of friction elements volatilize that cause their area burning-out	1. Alter the kind of mechanical seal 2. Reinstall 3. Clean shaft sleeve or adjust their content 4. Change material 5. Exchange or change material six. Filtrate or use exterior resource as rinsing drinking water 7. Adju EPT rinsing medium or measure
Bearings more than heating	one.Improper centering 2.Poor adjustment or resonance in piping 3.Overlarge .axial power four.Unbalance rotor five. The rigidity of foundation not enough six. Incorrect bearing installation or poor clearance 7. Wore or loosened shaft eight. Inappropriate lubrication nine. Oil splash ring can not get oil 10. Inadequate circulation in force lube	1. Readjust 2.Readjustreduce piping if essential use vibration-absorptive materialcheck and fix three. Verify and adju EPT specific functioning pointcheck ability and running point out four. Rebalance 5.Bolster the rigidity of basis 6. Check and pick bearing with properclearance seven. Check and substitute bearing 8. Check out the amount of oil 1st, too much or so little will influence procedure, then examine the good quality of oil, particularly applicable temperature 9.Check out and eliminate, the brings about of can not get oil could connected with oil quality, velocity,wore of oil splash ring and oil circulation 10. Examine the technique of stress lube
Vibration and noisy	one. Unique doing work stage B is not style pointnot design and style position minimal or substantial will result in vibration and noisy two. Insecure basis 3.Loosened anchor bolt four.Insecure piping supports 5.Piping resonance six.Cavitations seven. Air cell in medium or piping leakage 8.clogged inlet or outlet of impeller nine. Improper centering ten. Unbalanced pump rotor or motor rotor eleven.Worn coupling pin or harmful coupling connection twelve. Worn bearing 13. Shaft curved 14. Friction in rotating elements fifteen.Loosened or damaged rotating elements	1. Adju EPT technique particular doing work point or pump design and style parameters 2. Strengthen basis three. Tighten anchor bolt 4. Strengthen piping supports five. Increasing the distance in between pump discharge and elbow, use vibration-absorptive substance in piping link, adju EPT piping arrangements six. Rise drinking water stage, minimize suction line decline, boost suction stress by employing inlet throttle valveimprove pump cavitations functionality seven. Check and get rid of, include discharge valve 8. Cleanse impeller, clean impurity of pump and piping, examine strainer and suction nozzle 9. Recentering ten.Rebalance 11. Exchange pin, rotate coupling 180°, eliminate mistake of pin  hole, adju EPT the unit to insure there is a required clearance in coupling twelve. Repair or exchange bearing thirteen. Align or change shaft 14. Eradicate friction 15. Eradicate, change worn parts
h2o attack	Air in pump or piping	Evacuate air and get rid of the triggers
Pump starts pumping then stops	1. Clogged in suction line or impeller two.  Air  cell in piping three. Elevate as well substantial  (legitimate EPT EPT way too reduced) four. Air enter shaft seal 5. H2o level lessen also significantly	one. Clear impeller, clear impurity of strainer and suction piping two. Improve suction line, adju EPT piping preparations, add discharge valve three. Increase entrance strain, increase suction force by utilizing inlet throttle valve minimal the top of pump installation modify suction line if too much line reduction four. Check stress and sum of seal liquid if they are suitable running demands, replace packing or EPT shaft seal, examine the mounting situation of h2o seal ring five. Increase the lowe EPT drinking water stage, improve entrance strain, increase   suction   pressure by utilizing   inlet   throttle   valve

 

We – EPG Team the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 distinct branches. For a lot more information: Cellular/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828 The use of first tools manufacturer’s (OEM) component figures or logos , e.g. CASE® and John Deere® are for reference reasons only and for indicating item use and compatibility. Our firm and the listed alternative elements contained herein are not sponsored, approved, or produced by the OEM.