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XSR Circulation EPT for EPT Network

Item Introduction:

XSR sequence one phase double suction spEPTT case pump are EPTTly designed for transferring circulation drinking water in heat community of thermal EPTT EPTT. The pump for municipal warmth community will EPT the h2o flow like a circle in the community. Circulation water which circulation back from the municipal heat network will be boosted by the pump and heated by the heater, and then transferred return to the municipal warmth network.

Primary efficiency parameters

Diameter of pump outlet: DN200 to DN900
EPT Capacity: Q: 500-5000 m3/h
EPT raise head range: H:60-220m
EPT operating temperature: T -200deg C
EPT operating voltage: 380V to 10000V, 50Hz amp 60Hz

EPT Supporting Software and Solutions

We price the power conserving and environmental defense,by examining the demands of media and procedure atmosphere,undertake optional mixtures of supplies at the areas speak to with media,insure protection,reliability,affordable procedure.

EPTT Drawings

Structural Attributes:

one: Kind XSR pumps perform stably with significantly less sound and vibration, owing to brief spacing between each aspect supports.

two: The identical rotor of variety XSR pumps can be operated in reverse path to stay away from harm to the pumps by h2o hammer.

three):Special layout of large temperature sort: outer cooling drinking water will be available given that the bearing with cooling chamber the bearing could be lubricated by oil or grease,If the website has the same external ambient desalted h2o as the pumps transport medium ,and the stress is 1-2 kg/cm2 larger than the pump inlet stress, although mechanical seal washing water can be connected with above circumstances are not accessible, please follow the following instruction: cooling and filtering the large temperature dXiHu (West EPT) Dis.Hu (West EPT) Dis.eralized water which from the pump outlet to flush the mechanical seals, which could make the mechanical seals much more steady and endurable a h2o indicator need to be fixed on the flush water technique, which could monitor the flush h2o and adjust the h2o stream and force(generally the stress must be one-2kg/cm2 higher than the pump inlet stress) Bimetal thermometer should be coupled guiding the heater exchanger, and the alarming device optional, which could react whilst the temperature exceed limit Also a differential force switch was optional, which would checking the heater exchanger. Above EPT design tends to make the pump could function in substantial temperature problems close to two hundred centigrade

four:Velocity detection device coupled with speed measuring instrument and the probe will be configured at the shaft extension situation if the pump was EPTn by variable frequency motor or steam turbine othe1wise it will be configured at the coupling device if the pump was EPTn by typical motor with EPT coupling.

five: Variety XSR pumps can be vertically or horizontally mounted in accordance to distinct doing work condition, with EPT temperature EPTT seal or EPT seals can also use cartridge seals, so it is extremely simple and basic to replace them.

6:With EPTT design and style, the outline of XSR is obvious and stunning in line with modern day aesthetics .

seven:The effectiveness of XSR pumps are 2%-3% increased than the exact same type pumps because of to adopting EPTd EPT model and as a result lessen the operating EPTs significantly.

eight:Deciding on EPTT model bearing, and other elements substance picked by customer, make the pump suitable

for any operation issue and decrease the upkeep EPTings.

9: It is quick and straightforward to assemble and dismount the rotor areas due to utilizing elastic prestress assembling.

ten:It is unnecessary to make adjustment to any clearance when assembling .

Efficiency Information

Type	Capability (m sup3/h)	EPT (m)	Pace (r/min)	shaft EPTT (kw)	EPT EPTT (kw)	EFF(%)	NPSH(m)
XSR product	72-2000	seven-186	2900/1450/985/485	7.4-1403	eleven-1600	sixty eight-92	one.7-11

Precautions

1. Inspection before commencing

Be sure to check the followings:

(1) Insure pump plate fastened on foundation

(2) Insure coupling and pump device alignment

(3) Insure piping related by requirements

(four) Insure motor mounted by Installation and operation instruction

(5) Insure the rotor of pump rotate easily (at lEPT a circle)

(6) Insure the coupling guard set up

(7) Insure the operator totally understand the security specification that they need to obey and the failures might be occurred

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

(nine) Insure the shaft seal mounted by operation instruction

(ten) Insure the auXiHu (West EPT) Dis.liary device put in by operation instruction (If they eXiHu (West EPT) Dis.st)

(11) nsure the bearing have lubricated properly, eEPTTly insure new pump grease or thin oil do not decrease or go negative

(twelve) Insure the air trapped in pump escaped.

2. Shaft Seal

Open valves appropriately for stuffing box seal

3. Air exhaust

EPT and piping should fill of medium before beginning, there are two methods: development of EPT or priming. If the pump operated on the suction point out, eXiHu (West EPT) Dis.t fuel by bolt gap on top of the pump casing.

Be aware: When development of EPT, evacuate air by bolt gap on leading of the pump casing. When priming, open up both aspect minimal stress volute chamber of pump casing and the best plug, to get rid of pump vibration by remained air in pump.

4. Beginning

(1) Shut outlet valve

(two) Open inlet valve totally

(three) Open all auXiHu (West EPT) Dis.liary piping (cooling, heating, sealing, rinsing and lubricant liquid), and check all capacity and stress

(4) Starting up pump after ending above processes

(5) When the method beginning provide medium and the strain reading at strain gauge increase up, open up outlet valve little by little.

Be aware: Forbid pump functioning with out liquid! Only near outlet valve when the pump begin and shutdown, otherwise will harm the pump by overheating.

5. Operation

(1)

Validate operating position

In accordance to Q-H functionality curve of pump, potential Q differs with the genuine operation head. The head depended on the technique head (incXiHu (West EPT) Dis.Hu (West EPT) Dis. the altitude distinction amongst inlet and outlet, piping, valves, radiator and so on). So the pump in fact functioning position B is dependent on pump functionality

curve Q-H and system performance curve Q-EPT.

When ability settled, the shaft EPTT, efficiency, NPSH settled as effectively. EPT has minimal operating selection. The minimal potential are proven as Qmin in Q-H performance curve. MaXiHu (West EPT) Dis.mum potential are depended on the cross level of pump tolerance NPSH and technique legitimate NPSEPT. Modify valve can modify functionality curve Q-EPT of method, thus alter procedure performance, can make pump operation secure and substantial efficiency.

(two) Procedure management

JCEP shell out focus to followings:

a. EPT must perform stably

b. Forbid pump functioning with out liquid

c. To prevent medium temperature increase up, pump can not be operate EPTT period when shut outlet valve

d. EPTTly, the bearing temperature not larger than 35 ordmC of ambient temperature, absolute

operation temperature much less than one hundred ordmC.

e. Check oil level regularly if use skinny oil. Deep groove ball bearing of grease lubrication no need regimen upkeep.

f. Do not shut inlet valve (if it is eXiHu (West EPT) Dis.st) when pump functioning.

g. Periodical inspection and start off jury pump.

h. Verify auXiHu (West EPT) Dis.liary piping whether or not connected well.

i. Check elastic aspect of coupling, if worn substitute instantly.

j. For stuffing box seal there must have a sligEPTT drip when working, thrust stuffing box gland carefully until finally there is a sligEPTT drip (about 15-thirty drop/min ).

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

beginning couple of hours. If the seal leakage boost slowly and get to about 30-60drop/min, need to check or change mechanical seal.

6. Shutdown

Shut discharge valve.

Insure the pump device quit easily when shutdown the motor. EPT need to have a appropriate following-managing period of time, reduce warmth source at this time, so that the delivered medium can amazing down entirely and steer clear of of making any heat within pump.

Shut suction valve if pump end perform for a EPTT period of time.

Shut auXiHu (West EPT) Dis.liary piping, the shaft seal must use seal lubricant even even though at stopped point out. Evacuate all medium in pump and piping when freeze or quit perform for a EPTT-time period, so as not to frost crack.

seven. Storage

Every pump has inspected strictly ahead of delivery. EPTmmend to undertake subsequent techniques to retailer pump.

(one) Shop new pump

If keep pump at indoor, thoroughly clean dry place and comply with the storage requirements, the EPTTest storage time is twelve months.

(two) If equipment is to be stored for EPTT durations of time need to stick to under techniques.

a. EPT should keep in installation condition and examine work problem regularly. Commence pump once every single month or every three months (about 5 minutes). Check operating issue before starting pump to insure there is sufficient liquid.

b. Dismantled pump from piping and examine it according to EPT five.1 to five.four. Utilize protecting agent on inside of pump casing eEPTTly the gap of the impeller, implement on suction and discharge, then include the suction.

c. Operation right after storage

Inspect and maintain fully just before starting pump, eEPTTly shaft seal and bearing lubricant. Reinstall all basic safety protection gadgets according to requirement just before commencing.

Troubleshooting

Problem	Triggers	Solution
starting up load also higher	one. Starting up with no closing discharge valve two. EPTT as well tigEPTT direct to lubricant drinking water can not movement into three. MisXiHu (West EPT) Dis.Hu (West EPT) Dis. by failing of overcurrent protector	one. Shut the valve 2. Unfastened EPTT or check out the valve of h2o seal, verify if EPTT ring against the nozzle of lubricant water, three. Adjust present limiting threshold or restore overcurrent protector.
EPTT overheating	1.EPTT also limited 2.Cooling drinking water can not flow into EPTT box three. Injury in the surface of shaft or shaft sleeve	1. Unfastened EPTT appropriately 2.Free EPTT or examine if the drinking water seal pipe clogged 3.Repair shaft or shaft sleeve
EPTT leakage extreme	1. EPTT worn two. EPTT as well free three. Shaft curved or vibration four. Improper EPTT bind 5. Unclean seal drinking water wore shaft 6. Shaft sleeve worn seven. Improper EPTT 8.The force of seal chamber also substantial or also minimal	1. Substitute EPTT 2. Tighten EPTT box gland or insert far more EPTT three.Align or exchange shaft 4. Rebind EPTT five.Filtrate or use exterior supply as seal water, mend six.Change shaft sleeve 7.Replace EPTT eight. Alter the stress and capability of seal liquid or use a sealing liquid from an exterior supply.
EPT seal leakage	one. The nominal pressure of mechanical seal reduced than real perform strain two.Unreasonable reduction of EPT seal mounting,friction parts not make contact with successful three. The rust of shaft sleeve surface area cause rotating seal ring of mechanical seal sealing failure four. The sent medium actual physical and chemical property leads to O-ring loss elasticity 5. The sent medium bodily and chemical residence leads to EPT mechanical seal of loss elasticity 6. EPTTurity EPTTr friction elements and destroyed their area 7. The liquid of friction factors volaEPTTze that result in their floor burning-out	one. Adjust the variety of mechanical seal two. Reinstall 3. Clean shaft sleeve or adjust their materials 4. Alter content five. Change or change substance six. Filtrate or use exterior resource as rinsing water seven. Adjust rinsing medium or evaluate
EPTTs over heating	one.EPTTroper cEPTTring 2.EPTTroper adjustment or resonance in piping 3.Overlarge .aXiHu (West EPT) Dis.al pressure 4.Unbalance rotor five. The rigidity of foundation not ample 6. Incorrect bearing installation or inappropriate clearance seven. Wore or loosened shaft 8. EPTTroper lubrication 9. Oil splash ring can not get oil 10. Bad circulation in stress lube	one. Readjust 2.Readjustreduce piping if needed use vibration-absorptive materialcheck and restore 3. Check out and adjust EPTT operating pointcheck ability and managing point out four. Rebalance five.Reinforce the rigidity of foundation six. Verify and select bearing with properclearance seven. Verify and substitute bearing 8. Verify the sum of oil 1st, too much or so minor will have an effect on operation, then verify the good quality of oil, eEPTTly applicable temperature 9.Check and get rid of, the causes of can not get oil may possibly relevant with oil high quality, velocity,wore of oil splash ring and oil circulation ten. Verify the system of pressure lube
Vibration and noisy	one. EPT functioning point B is not design pointnot design and style point minimal or large will result in vibration and noisy two. Insecure foundation three.Loosened anchor bolt four.Insecure piping supports 5.EPT resonance six.Cavitations seven. Air cell in medium or piping leakage 8.clogged inlet or outlet of impeller 9. EPTTroper cEPTTring 10. Unbalanced pump rotor or motor rotor eleven.Worn coupling pin or harmful coupling connection 12. Worn bearing 13. Shaft curved 14. Friction in rotating aspects fifteen.Loosened or broken rotating aspects	1. Change system EPTT functioning position or pump design and style parameters two. Improve basis 3. Tighten anchor bolt 4. Reinforce piping supports five. ExpXiHu (West EPT) Dis.Hu (West EPT) Dis. the length between pump discharge and elbow, use vibration-absorptive materials in piping connection, modify piping arrangements six. Increase drinking water degree, decrease suction line decline, increase suction force by employing inlet throttle valveimprove pump cavitations functionality seven. Verify and eliminate, insert discharge valve eight. Clean impeller, thoroughly clean imEPT of pump and piping, check out strainer and suction nozzle nine. RecEPTTring ten.Rebalance 11. Change pin, rotate coupling 180 deg, eradicate mistake of pin hole, modify the unit to insure there is a necessary clearance in coupling twelve. Fix or exchange bearing thirteen. Align or substitute shaft fourteen. Eradicate friction fifteen. Get rid of, change worn parts
drinking water attack	Air in pump or piping	Evacuate air and remove the leads to
EPT starts pumping then stops	one. Clogged in suction line or impeller two. Air mobile in piping 3. Carry too higher (valid NPSH way too low) 4. Air EPTTr shaft seal 5. JCEP degree reduce way too much	one. Thoroughly clean impeller, clean imEPT of strainer and suction piping two. EPTTrove suction line, alter piping arrangements, incorporate discharge valve three. Increase entrance pressure, increase suction strain by using inlet throttle valve low the heigEPTT of pump installation change suction line if too much line loss 4. Check out stress and quantity of seal liquid if they are appropriate running requirements, replace EPTT or other shaft seal, verify the mounting situation of h2o seal ring 5. Increase the most affordable water degree, increase entrance strain, increase suction pressure by employing inlet throttle valve