中开蜗壳式离心泵SLOW

01
SLOW SERIES DUAL-SUCTION PUMP
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0.0
0.1
This operation instructions covers the basic introduc-tion and the precautions and please read it carefully before erection and operation of the pump and the circuit connec-tion.
The dual-suction pump made in Shanghai Liancheng (Group)Co.Ltd is developed on the basis of advanced know-how and has passed through a continuous quality control.What is the purpose to draw out this operation in-structions is to make it convenient for users to get familiar with the pump and have a good command of its special use.
It is very important to follow the requirements on how to have the pump reliably,safely and effectively run intro-duced in this instructions so as to make sure of its relia-bility,safety and durability of running.
This instructions does not cover any local provisions and operators,including the invited erection persons,sh-ould strictly follow these provisions.
During he pump's run,the medium being transported,flow,flow rate,density,pressure,temperature and the mo-tor's speed must not be over the limited value set forth in the technical document so as to make sure of the pump's run in line with the provisions in this instructions and con-tract document.
The pump's model/specis,running data,factory/series codes are marked on the nameplate and please refer to th-ese data in case of a question or repeated order,especially the order for spare parts.And please contact with the order for spare center of clients of Shanghai Liancheng(Group)Co.Ltd,if you need any other information or in case of a failure with the pump.
There is the basic introduction for safety in this ins-tructions and it must be followed when to assemble,run and service the pump.Prior to erection and run,the per-sons for erection,specially in charge of it and for opera-tion have to read this instructions.
Besides to follow the particulars for safety in the ch-apter of "Safety",the safety indications should also be dr-awn under the specific topic.
Persons may be made harmful if not following the sa-fety particulars in this manual,therefor they must be ma-rked with special marks of danger.The make is:
0.0SAFETY
0.1MARK OF SAFETY INDICATION
02
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0.2
0.3
0.4
0.5
The mark of electric shock warning The word:
Used to not following the safety p-articulars may result in failures and malfunctions with the machine.Some other indications are directly marked on the machine,as:
-The arrow expressing the run direction;-The mark expressing the run direction;
These indications must be carried out and marked on the attention attracting place.
All the persons responsible for the pump assembly,run,check and service must have the relative qualifications.There should be the person in charge of and supervisory among the operators.Proper training and instructions have to be given to those operators who have no capability to deal with any problems,which can be entrusted to do by this Co.if necessary.Besides,every person in charge of should know well the all contents in this instructions.
Dangers may be produced to personnel safety,envi-ronment and machine and penalty and compensation for loss would be caused in case of not following the safety par-ticulars,so special attention must be paid to them.It may result in the followings if these particular are not followed:
-Out of functions of the important machines or units;-Breakdown of the provided service and maintenance;-Harm to persons caused by electricity,machinery and chemical affection;
-Harm to environment caused by the harmful matters.
Please do follow the safety particulars set forth in this instructions,drawn out by the country and specified for o-perators in their operation.
The safe and protective device must be mounted for any hot or cold components which may cause dangers by operators and the said device should not be removed in run-ning in order to avoid direct contacting with the movable parts(as the clutch).To avoid dangers to people and envi-ronment,the leakage of any harmful media to be transport-ed(as the explosive,toxic and hot media)and leakages(as
0.2PERSONNEL LIMIT AND TRAINING
0.3UNCONFORMITY OF THE SAFETY PARTICULARS
0.4SAFETY CONSCIOUSNESS
0.5SAFETY PARTICULARS TO OPERATORS/USERS
03
SLOW SERIES DUAL-SUCTION PUMP
1.0
0.6
0.7
0.8
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the leakages at the shaft seal)must be properly processed and the related laws,rules and the local provisions should be followed.
It must be made sure that all the work of maintenance,check and erection should be done by the special persons who have been designated,certified and very familiar with this instructions and with the machine stopped,and the ru-les for stop must be followed.
Both pump and its unit must be sterilized when to tr-ansport the medium harmful to health.
Following the above work,finish the work below at once:all related safe and protective devices must be re-mounted and restarted and please refer to the chapter or "Running"before the machine runs again.
Any parts are not allowed to be replaced until discu-ssing with this Co.and the original spare parts and acce-ssories supplied by this Co.are safe.This Co.would not be responsible for any loss caused by the use of other pats.The pump can reliably and safely run only with the specified ways of use and the limited values in the table of data must not be over under any conditions.
0.6SAFETY PARTICULARS FOR MAINTENANCE,CHECK AND ERECTION
0.7NO ALLOWANCE TO REPLACE ANY SPARE PARTS WITH THOSE NOT MADE IN THIS Co.
0.8THE WORKING CONDITIONS OF USE WHICH ARE NOT ALLOWED
1.1
1.2
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1.1SAFETY PARTICULARS
1.2TRANSPORTATION
Make a suitable preparation and process for the transporting unit.
Please carry out them according the notes and safety particulars below.It is recommended the unit be horizontally placed dur-ing transportation under any conditions,because in this way,whatever mode of transport is taken,it can be stably placed without any danger(such as:highway of boat transport).
To transport,the unit must be securely placed on the shipment stand and all the parts easy to be loose and re-movable should be made secure and reliable.
04
2.0
PRODUCT AND ACCESSORIES
1.2.1
90
1.2.1Lifting the pump unit with a lifter
The lifting hole of the motor is used to lift it only while not to lift the unit.To lift the pump
unit,take care of the direction of the pulling force and the
angle should not be over 90,and use the lifting rope on both sides.The correct way of lifting comes as below in the drawing.
2.1
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SLOW
2.1TECHNICAL CHARACTERS
SLOW pump is single-stage dual-suction centrifugal split pump with the volute casing and the connection fl-ange is made per the preferential series of the national stan-dards.It is used for the water works,irrigation and water logging
pump station,the industrial water supply system in a power plant,air-conditioning system,dock,fire-fighting system and
many other fields.
05
SLOW SERIES DUAL-SUCTION PUMP 2.2MODEL MEANING
2.3350mm
8000
2.3.1
2.3.2
2.3.3
2.3.4
2.3MAIN DESIGNED PARTS
Allowed value of stuffing seal leak(maximum value):
The flanges of both inlet and outlet are placed on the pump casing.
The radial dual-suction impeller is designed and made as required by users and features the ability to balance most of the axial force.
For those pumps whose outlet diameter is below 350mm,the shaft is completely sealed to prevent it from being corroded due to the leak of liquids and the muff is stret-ched into the sealing area.
The shaft seal is designed as stuffing or mechanical
seal per the need of use and guaranteed to be safe running for 8000hours.
2.3.1Pump casing
2.3.2Impeller
2.3.3Pump shaft
2.3.4Shaft seal
The normal leakage from the stuffing chamber should not be over the data in the table.The stuffing's duration would be reduced and the mechanical loss would be inc-reased if it is too less,then the stuffing gland has to be adjusted to lower the pressing extent to enlarge the leakage while adjusting the position of the gland in the reversed direction if too
more.
(mm)(mm)
()Means the third cutting Means as a flow-expansion type
Means the DN of impeller (mm)
Means the outlet aperture of the pump (mm)Means horizontal erection
Means spiral casing type centrifugal pump (vertical erection)Shanghai Brand
SL O (W)
(I)C
06
3.0
FIELD
ERECTION
O
NTN SKF
2.3.5
2.4
2.5
2.6
3.1
Allowed value of the mechanical seal's leakage:Adjust the screw on the gland with hand to make the static-ring evenly forced in case of a too large mechanical seal's leakage and,if the mechanical seal or the O-ring is found damaged,replace it on time.
Cooling or lubricating water pipe must be smooth wi-thout any resistance.
As required in the design and running data,the pump is equipped with a bearing and a lubricating system,of which,the dry-grease lubrication is used with the imported fully closed
bearing,without need for users to put in the grease during work;and the thinned oil lubrication is set with an oil cup with which the oil level can be seen and the oil
can be put in.
The bearing on the free end is set with a sleeve so as to quickly replace the bearing without need to remove the rotor or the pump casing.
This es NTN or SKF bearing,stable running,low noise and long duration.Horizontal or vertical erection.
The accessories of the pump depend on each relative contract.
Please refer to the catalogue of the pump.
2.3.5Bearing and lubrication
2.4ERECTION FORM
2.5ACCESSORIES
2.6SIZE AND WEIGHT
3.1SAFETY PARTICULARS
As marked on the nameplate,to mount the elec-tric power equipment in a dangerous place should
follow the local provisions for anti-explosion,as well as those for the equipment to be certified after inspection and set forth by the authority in charge of approvement.The certificate of inspection must be placed near the pump unit.
07
SLOW SERIES DUAL-SUCTION PUMP 3.2
3.312
3
12
(40
50mm )
3456
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0.04mm
90
3.3.1
3.3.2
3.3.3
3.2CHECK PRIOR TO ASSEMBLY
3.3ERECTION OF
PUMP/UNIT
All the preparations for assembly should be made ready
according to the catalogue or the erection drawing and as required in the related standards,the concrete basis must be strong enough to make sure of a safe and reliable ass-embly and before placing the unit on it,must be solid and its surface should be smooth and flat.1.The concrete basic must be solid and its surface must be smooth and flat prior to erection.
2.Insert the foot bolt into the preset hole and place the pump on the basic,then adjust the level at the shaft end or outlet one with a leveller,place pads on the place near the foot bolt and between the foot and the basic.
3.After the level adjustment,grout the foot bolt and uniformly tighten it after the mortar becomes solid and adjust the level again.
1.Measure and record the position of the pump.
2.Put the pump unit on the basis and insert the foot bolt into the basis,then make adjustment.(Keep a 40-50mm space between the foundation and the basis if necessary to grout the foundation).
3.Grout the bolt and let it be solid.
4.Precisely adjust the unit and let it centred at the clutch with an adjusting screw.
5.Evenly tighten the foot bolt.
6.Grout the foundation if necessary at this time and then check and adjust again(with pads).
It is necessary to make sure of both pump and motor to be precisely centred at the clutch,which should also be done even if both of them are supplied as an integral unit.
The method:it can be regarded as being well centred for the deviation between the axial and radial rakes of the clutch not to be over 0.04mm.
Evenly rotate the gauge by 90on both ends of the clutch every time and check with a vernier caliper or mi-crometer,the readings on all points must be even.
Before starting the pump check the data of run-ning to make sure they are those on the nameplate,
for instance:the working pressure,frequency,the tempera-ture to be transported etc.,They should conform to those on the contract and of the system.
3.3.1Erection without the common foundation for both
pump and motor
3.3.2Erection with the common foundation for both pump
and motor
3.3.3Adjustment of both pump and motor
3.4 3.4PIPELINE CONNECTION
Never take the pump as the support point of the
pipeline.The upward-suck pipeline should be pl-
aced in an upward inclination while the inverted-pour one in
a downward inclination.The pipeline should have support
points near the pump and not be allowed to bear any pre-
ssure or be made deformed,its weight should be no way
to become a load on the pump.For a short pipe,its nomi-
nal diameter should at least be equal to that of the pump
inlet and,for a long pipe,the most economical nominal dia-
meter should be upon the specific conditions.Pay attention
to the additional load on both inlet and outlet caused by the
followings:the weight of pipe full of water,the length va-
riation of a pipe because of the variation of the tempera-
ture and the counter action caused due to the looseness of
the stretcher,they should never be over the given values.
The piezometer on the pump outlet must be placed close
to the outlet and not be allowed to be mounted on the back
of the gate va lve at the outlet.It may cause leak from the
pump if the pressure inside of the pipeline is too big or over
the allowed value and the medium being transported may
be then es-c aped into air,a fatal danger may be produced
if the medium is a hot one!
08
09
SLOW SERIES DUAL-SUCTION PUMP 4.0
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RUN STOP
4.1CHECK BEFORE RUNNING
The followings must be checked before starting the Pump:
*If all instruments and meters work accurately *The foundation with the pump is tightened with the basis
*The clutch and the pump unit are well corrected *The pipeline is connected per the requirement *The motor is mounted per the instructions *The rotor is easy to be moved by hand(at least once cycle)
*The protective cover of the cluth is put on *The operator knows well the possible failures and the safety rules which have to be followed *The overload is removed
*The shaft seal is mounted per the instructions *The auxiliary devices,if supplied,are mounted per the instruction
*All the bearings are well lubricated *The pump is exhausted
*The oil level is OK is case of the thinned oil lubri-cation to bearings
3.4.1
3.4.2
3.5
3.4.1Auxiliary pipelines
3.4.2Protective cover of the clutch
All the necessary auxiliary pipelines are mounted be-fore the pump's ex-works.
Erection of the auxiliary pipelines can be helpful for the normal work of the pump,therefore it is
important to mount them.
It is prohibited to have the pump work without the protective cover and the operator must mount it case or no need by the user due to a special requirement.
Please check again If the calibration is correct then.It must be easy to move the clutch to have it drive the rotating shaft with hand.
Check if all pipelines are secure and can work normally.
3.5FINAL CHECK
4.1
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4.2
4.3
4.420%
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4.4.1
4.4.2
4.2SHAFT SEAL
4.3EXHAUST
4.4RUNNING
Pay attention to the leakage in case of a mechanical seal and check and replate it if it goes more.
Take care not to pull the stuffing along with the direction
of its length
in case of a stuffing
seal and,if it can not be put in the
shaft unless enlarging the internal diameter,please use an axial spiral
stretch,about 20%of the stuffing must be pre-ssed when to put it in each time.Please separately place them in case of the stuffing is hybrid with different varieties,how-ever,same ones have to be put on both sides of the stuff-ing ring and the two glands.
Both pump and pipeline must be completely exhausted before starting the pump and pour them with the medium.The cork hole on the upper of the pump casing can be used for exhaust.The pump can safely run only with a correct ro-tating direction of the impeller,otherwise,if with
a wrong one,it can not reach the points of working con-ditions and may produce vibration and overheat,the pump unit or the shaft seal may also be damaged.The said di-rection must be identical to that of the arrow marked on the pump casing and can be verifie at once the pump is started.Stop running immediately if it is wrong and the pump is not allowed to be frequently started.Make sure no foreign matters are inside of the pump casing before check and prohibit any hand or other objects from being into the pump!
Prohibit the pump from dry moving!the outlet valve;*Fully open outlet valve;
*Open all auxiliary pipeline(cooling,heating,sealing,washing and lubricating liquid),and check the flow;*Start the motor after the above steps;
*It can be seen on the piezometer for the pressure to rise when the system starts to tansport a medium,then slowly open the outlet valve;
*Take the start procedures per the related instruc-tions if the motor is directly;
The outlet valve is closed only at the pump's s-tarting and stopping and the running points of the
pump is controlled through the opening adjustment of the valve.
4.4.1Check the rotating direction of the rotor
SLOW SERIES DUAL-SUCTION PUMP 4.4.3
Q H
Q
A
Q
H
Qmin
Q Q Qmin
B NPSH NPSHr
(NPSH)a (NPSH)r
(NPSH)a
Q H
()
NPSH
NPSH
4.4.3Working range of the pump
Based on the Q-H characteristic curve,the flow Q can be self adjusted to meet with the head's variation while the allowed range for the pump to work is limited,caused with various reasons.
A.Working limit of the load on the low flow part
This limit is shown with Qmin in the said curve or with the extended line of the curve which is not drawn out.
As shown in the drawing:
The pump is not allowed to work in the range of Q=O-Qmin,otherwise long running within this range may cause the mechani-
cal load to greatly increase,thus making the parts no way to bear,but an instantaneous pass through this range is allowed,such as starting the pump.
B.Limits of NPSH of partial load and within the overload
range
These two limits can be decided upon the relationship between the necessary (NPSH)r and the apparatus'(NPSH)a and gained with the following way:have the intersection points of both (NPSH)r and (NPSH)a projected on the Q-H characteristic curve,the two projected points decide the work limit (the part under the curve).
It is not required to check the work limits of NPSH when the pump works under the designed working conditions,which has to be done while the system varies.Inquire to the nearest post-sale service centre if necessary.
4.4.4
4.5.1
4.5.2
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5.1
5.4
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5.1
5.2
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4.5
4.6
4.4Stop
4.5STOP/STORAGE/SERVICE
4.6RUNNING AFTER STORAGE
Close the outlet valve.Do not close the inlet valve when to stop the pump and make sure that the unit can be slowly stopped when to turn off the motor.The pump sh-ould have a proper period of back movement and,during which,the heat source must be cut off,thus letting the me-dium being transported completely cooled so as to avoid any heat produced inside of the pump.The inlet valve must be closed in case of a long time stop of the pump as well as the auxiliary pipelines.The shaft seal of the pump should be lubricated with sealing liquid even if in the stop status.
Remove the medium left inside of both pump and pipelines in the freezing season or in the long time stop.Each pump made in this Co.is strictly inspected at
ex-works,to store it,the following measures are suggested
to take:
Remove the pump from the pipeline and keep it
well
This Co.has made full preparations for the pump it supplies.You may keep it in a dry place and one year can be kept in case of indoor storage.
1.Keep the pump in the assembled status and perio-dically check its working condition.
In the long time stop,to ensure that it can be started
at any time and prevent any precipitates from forming in-side of the pump and at the inlet,start it once every 1or 3months(for about 5minutes)and,before that,check its
running condition to make sure that there is enough liquid inside of it for starting it.
2.Check per 5.1-5.4before to keep it.
Spray a protective agent onto the inner wall of the pump casing,especially the space of the impeller,and the suction inlet and drain outlet,then cover both inlet and
outlet with plastic or the like.Check and service per 5.1and 5.2before running.Besides,please refer to the chapter of "Run,start/stop".All the safe and protective devices should there after be remounted and put into use before starting the pump unit.
4.5.1Storage of a new pump
4.5.2Measures taken in a long time stop
SLOW SERIES DUAL-SUCTION PUMP
5.0
5.1
****
*30
90100
*****
1.0
2.0bar
*
5.25.2.1
5.2.2
5.1GENERAL PROVISIONS
5.2SERVICE/CHECK
It is required that all the work for service,check and erection must be carried out by the special persons desig-nated,qualified and very much familiar with this instructions.
A periodical service plan can avoid and expensive cost of service,have the pump without any failures and reliably running with a rather low cost of service.
It should be done to cut off the power for the above work to prevent the pump unit from abrupt starting.
The pump must be sterilized before transporting any liquids harmful to health and both people and environment would not be harmed only with the medium completely drained out,and at the same time,related provisions should also be followed.Pay special attention to the followings during running of the pump:
*Take care of the three-phase current value all the time
*The pump must run stably
*The pump is not allowed to run without any liquid *To prevent the temperature rise of the medium,the pump can not run for a long time with the outlet valve closed
*The bearing's temperature is not allowed to be over 90when the ambient one is 30;and not over 100while the ambient one goes rising
*Periodically check the oil level in case of a thinned oil lubrication for the bearing
*The inlet valve must not be closed at pump's running *Periodically check and start the spare pump
*Check the elastic elements on the clutch and replace them at once worn-out is found
*In case of not the medium being transported to be used as the sealing,cooling and lubricating liquids,then the liquid used must be guaranteed with its pre-ssure higher than the inlet one by 1.0-2.0bar
*If any leak at the stuffing happens with the pump using the stuffing seal,slightly press the stuffing gland till less water drops.
Take the maintenance per the chapter of "Shaft seal"in this instructions.
5.2.1Running control
5.2.2Maintenance of shaft seal
5.2.3
5.3.1
5.3.2
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5.3
5.2.3Maintenance of bearing
5.3.1Basic provisions and suggestions
5.3.2Prepartions for removal
No need of maintenance for the bearing with grease
lubricated deep-ditch ball.
Use the related instruction for the maintenance of the
bearing with the thinned oil lubricated.Before removal,it should be made sure that the pump
can not abruptly start and must be cooled to the ambient temperature and completely drained,both inlet and outlet valves must be closed and the pressure must be released.Removal and reassembly should be done according to some related information.
Both maintenance and service must be done by the
special persons and the original spare parts should be used.
The safety particulars must be followed and the ope-ration concerning the motor has to be done according to the related instructions and provisions.
Both removal and reassembly must be upon the re-lated drawings.
In case of a failure,please contact with the service
dept of this Co..
It is unnecessary to remove both inlet and outlet
pipelines and calibrate the pump's position again if only to remove the rotor of the pump.
Remove the rotor part per the following steps:1.Close both inlet and outlet valves and open the drain cork(on the bottom)and the exhaust cork(on the top)to completely drain the water pump;2.Remove all auxiliary pipelines on the pump;3.Remove the protective cover of the clutch;4.Screw out all screws on the middle surface;5.Loosen the screws on the flanges and separate the pump casing from its cover with the cover-out s-crews,then lift the pump cover with a lifter and
place it in a safe place and further overhaul or re-move the inside of the pump;(Attention:take care not to scratch the seal plane between the middle surface of the cover and the casing);
6.Drain out the oil if the thinned oil lubrication is used for the bearing;
7.Remove the connection bolt between both bearing body and bracket and loosen the nut and connection bolt on the bearing cover on the non-driving end;
5.3REMOVAL
SLOW SERIES DUAL-SUCTION PUMP
8
(
350mm
)
91011
(
350mm
)
12131415(
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16
()
17
18192021
(
)
O
5.4
8.Have the bearing body out of the notch,(that means the one with a notch of the pump of an outlet dia-meter less than or equal to 350mm;the one without the notch has to be lifted together with the rotor),and lift the rotor out of the pump casing and place it in a safe place for further removal;9.Remove the bearing body or gland;
10.Loosen and remove the locking nut and thrust wa-sher;
11.Remove the bearing with a deep-ditch ball from
the shaft,including the bearing sleeve;(for the pump of an outlet diameter larger than 350mm,remove the bearing together with its body);12.Remove the bearing gland;13.Remove the water-baffle ring;14.Remove the seal gland;
15.Remove the seal body(means that has the structure
with such a seal body);
16.Remove the muff(first remove the nut on the muff
if any);
17.The impeller,because of an interval fit with the
shaft,is easy to be removed and you may slightly knock on the hub of it with a wood hammer or copper rod if no way to remove;
18.Remove the other muff,including the seal body
and gland;
19.Remove the clutch of the pump;20.Remove the bearing body;
21.Loosen the elastic baffle ring of the bearing as
well as the locking nut to let the bearing with a deep-ditch ball out.Take a contrary sequence to that for removal to rea-ssemble and use the overall erection drawing and the tables for each part as reference.
Assembly and removal of the shaft seal,bearing and seal ring should follow the standard assembly technology or erection instructions.
Fill the oil from the oil hole on the upper of the be-aring body to the required level in case of the bearing using the thinned oil lubrication.
The force to tighten must be proper and not too tight and all the locking nuts must be evenly and symmetrically tightened.
The skeleton oil-seal of both O-ring and baffle ring must be replaced and the place where it is mounted must be cleaned.Besides,all the sealing elements must be put on the proper positions before erection.
5.4REASSEMBLY
(
)
The pump shaft must be stably placed when to mount the rotor.Clean all the fitting places,including the fitting between threads and intervals,and coat them with the ass-embling adhesive,place the required pins on the pump shaft when to assemble.
Pay attention to the rotating direction of the impeller with an interval fit and follow the drawing below to corr-ectly mount it.
Mount the seal rings on both ends of the pump on the
driving surface of the rotor and make sure of the beveling of the rings to be outside(facing towards the bearing).To assemble the seal ring with a position-pin,it should be put it.
The following elements are mounted on the driving end of the motor.
Put the muff on the shaft and make sure that the im-peller's pin is inlaid into the pin channel.。