Horizontal Split Case Water Pumps

Horizontal Split Case Water Pumps


Horizontal break up situation h2o pumps

Horizontal break up situation water pumps solution Introduction

Horizontal break up scenario water pumps is a new technology of large efficiency single stage double suction centrifugal pumps which mainly utilised in delivering liquids of the drinking water plant, air conditioner circulation drinking water, heating pipe community program, creating h2o provide, irrigation and drainage of pump stations, energy crops, industrial drinking water provide system, fireplace combating method, shipping market and mine. It is a new substitute of SH, S, SA, SLA and SAP.

Principal overall performance parameters

Diameter of pump outlet: DN80 to DN900
Pump Capacity: Q: 22-16236m3/h
Pump raise head assortment: H:seven-300m
Pump operating stress: P≤5Mpa
Pump doing work temperature: T-twenty-200deg C
Pump working voltage: 380V to 10000V, 50Hz & 60Hz

Pump Supporting Software and Solutions

We value the power conserving and environmental security,by analyzing the demands of media and operation surroundings,undertake optional mixtures of resources at the elements speak to with media,insure protection,dependability,inexpensive operation.

CZPT Drawings

Structural Characteristics

Centrifugal horizontal break up circumstance pump perform stably with considerably less sound and vibration,might be properly function at boosting velocity because of to limited spacing amongst equally facet supports,hence they can extensively utilised. Inlet and outlet at the exact same line,the exact same rotor of the XS pumps can be operated in reverse direction,the XS pumps works stably with much less sounds and vibration and can perform at increasing speed because of to quick spacing amongst the two facet assistance, which make the pumps can be widely utilised. The XS pumps undertake the way of center assist, thicken the pump casing, and use cooling seals and oil lubrication bearing which make XS pump ideal operating at 200ºC,especially for provide heating web method. XS variety pumps can be vertically  or horizontally mounted according to distinct doing work condition, with mechanical seals or packing seals.

Overall performance Data

Type Potential (m³/h) Head (m) Pace (r/min) shaft electricity (kw) Motor electricity (kw) EFF(%) NPSH(m)
XS model 22-16236 7-300 2900/1450/985/485 2.nine-3737 five.five-4000 sixty eight-ninety two 1.seven-11


1. Inspection prior to beginning

Be certain to check the followings:

(one) Insure pump plate fixed on basis

(two) Insure coupling and pump device alignment

(3) Insure piping related by demands

(four) Insure motor set up by Installation and procedure instruction

(five) Insure the rotor of pump rotate effortlessly (at minimum a circle)

(six) Insure the coupling guard set up

(seven) Insure the operator fully comprehend the protection specification that they need to obey and the failures may be happened

(eight) Insure the shaft seal liquid or cooling liquid guide-in by demands

(nine) Insure the shaft seal put in by procedure instruction

(10) Insure the auxiliary unit installed by procedure instruction (If they exist)

(eleven) nsure the bearing have lubricated properly, particularly insure new pump grease or skinny oil do not reduce or go poor

(12) Insure the air trapped in pump escaped.


two. Shaft Seal

Open up valves properly for stuffing box seal


three. Air exhaust

Pump and piping should fill of medium prior to starting up, there are two techniques: generation of vacuum or priming. If the pump operated on the suction point out, exit gas by bolt hole on top of the pump casing.

Notice: When generation of vacuum, evacuate air by bolt gap on leading of the pump casing. When priming, open up equally aspect lower stress volute chamber of pump casing and the leading plug, to get rid of pump vibration by remained air in pump.


four. CZPTting

(one) Close outlet valve

(2) Open up inlet valve completely

(three) Open up all auxiliary piping (cooling, heating, sealing, rinsing and lubricant liquid), and check out all capability and stress

(four) CZPTting pump after finishing above techniques

(5) When the method starting deliver medium and the pressure looking through at strain gauge rise up, open up outlet valve gradually.

Be aware: Forbid pump operating without liquid! Only shut outlet valve when the pump start off and shutdown, normally will damage the pump by overheating.


5. Procedure


Validate operating stage


According to Q-H overall performance curve of pump, capability Q differs with the genuine procedure head. The head depended on the method head (which includes the altitude difference among inlet and outlet, piping, valves, radiator and so on). So the pump really operating level B relies upon on pump performance

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

As soon as potential settled, the shaft energy, efficiency, NPSH settled as well. Pump has restricted functioning assortment. The minimal ability are shown as Qmin in Q-H efficiency curve. Greatest capacity are depended on the cross point of pump tolerance NPSH and program legitimate NPSHA. Change valve can modify overall performance curve Q-HA of program, therefore alter operation efficiency, makes pump operation secure and higher efficiency.

(two) Operation administration

Ought to spend consideration to followings:

a. Pump need to function stably

b. Forbid pump running with out liquid

c. To prevent medium temperature rise up, pump can not be run long period when close outlet valve

d. CZPTly, the bearing temperature not higher than 35ºC of ambient temperature, absolute

operation temperature much less than 100ºC.

e. Check out oil amount frequently if use slender oil. Deep groove ball bearing of grease lubrication no need schedule maintenance.

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

g. Periodical inspection and start off jury pump.

h. Examine auxiliary piping whether related properly.

i. Check elastic element of coupling, if worn exchange instantly.

j. For stuffing box seal there ought to have a slight drip when running, drive stuffing box gland carefully till there is a slight drip (about 15-thirty drop/min ).

For mechanical seal the seal leakage need to lessen progressively. It is about -5drop/min soon after

commencing few hours. If the seal leakage increase gradually and achieve about 30-60drop/min, need to examine or modify mechanical seal.


six. Shutdown

Close discharge valve.

Insure the pump device quit effortlessly when shutdown the motor. Pump should have a appropriate soon after-working period of time, reduce warmth source at this time, so that the delivered medium can great down totally and avoid of creating any heat inside of pump.

Near suction valve if pump stop operate for a prolonged period of time of time.

Near auxiliary piping, the shaft seal need to use seal lubricant even even though at stopped state. Evacuate all medium in pump and piping when freeze or stop perform for a long-time period, so as not to frost crack.


seven. Storage

Each and every pump has inspected strictly ahead of shipping. Advise to undertake adhering to procedures to keep pump.

(1) Shop new pump

If shop pump at indoor, clear dry place and follow the storage needs, the longest storage time is twelve months.

(two) If products is to be stored for prolonged periods of time should adhere to below methods.

a. Pump should preserve in set up point out and examine function problem frequently. CZPTt pump when every month or each and every 3 months (about 5 minutes). Check out operating condition just before beginning pump to insure there is ample liquid.

b. Dismantled pump from piping and check out it according to section five.one to five.4. Apply protecting agent on inside of pump casing specially the gap of the impeller, utilize on suction and discharge, then include the suction.

c. Operation right after storage

Examine and preserve entirely ahead of commencing pump, especially shaft seal and bearing lubricant. Reinstall all security defense devices in accordance to requirement ahead of beginning.






commencing load also large

one. CZPTting without having closing discharge valve
2. packing also restricted lead to lubricant drinking water can not flow into
three. Misguide by failing of overcurrent protector

1. Close the valve
2. Loose packing or verify the valve of water seal, check if packing ring against the nozzle of lubricant water,
3. Modify current limiting threshold or mend overcurrent protector.

Packing overheating

1.Packing  too tight
2.CZPT water can not movement into packing box
three. Damage in the surface of shaft or shaft sleeve

one. Free packing effectively
2.Loose packing or check out if the h2o seal pipe clogged
three.Restore shaft or shaft sleeve

Packing leakage extreme

one. Packing worn
2. Packing too free
three. Shaft curved or vibration
four. Wrong packing bind
5. Unclean seal h2o wore shaft
six. Shaft sleeve worn
7. Wrong packing
eight.The strain of seal chamber also large or too lower

one. Exchange packing
two. Tighten packing box gland or incorporate more packing
three.Align or change shaft
four. Rebind packing
five.Filtrate or use exterior source as seal h2o, mend
six.Change shaft sleeve
seven.Change packing
eight. Modify the strain and capacity of seal liquid or use a sealing liquid from an external source.

CZPT seal leakage

one. The nominal pressure of mechanical seal decrease than genuine perform force
2.Unreasonable reduction of CZPT seal mounting,friction elements not speak to powerful
three. The rust of shaft sleeve surface trigger rotating seal ring of mechanical seal sealing failure
four. The shipped medium bodily and chemical residence leads to O-ring reduction elasticity
5. The delivered medium physical and chemical house leads to spring mechanical seal of decline elasticity
 6. Impurity enter friction components and broken their area
seven. The liquid of friction factors volatilize that trigger their surface burning-out

1. Change the sort of mechanical seal
two. Reinstall
three. Clean shaft sleeve or alter their content
four. Alter materials
five. Change or modify materials
six. Filtrate or use exterior resource as rinsing water
7. Adjust rinsing medium or measure

Bearings above heating

1.Poor centering
two.Improper adjustment or resonance in piping
3.Overlarge .axial power
four.Unbalance rotor
5. The rigidity of basis not adequate
6. Incorrect bearing installation or poor clearance
seven. Wore or loosened shaft
eight. Poor lubrication
9. Oil splash ring can not get oil
10. Bad circulation in strain lube

one. Readjust
two.Readjustreduce piping if required use vibration-absorptive materialcheck and repair
3. Verify and alter unique operating pointcheck capacity and working condition
four. Rebalance
5.CZPTen the rigidity of basis
6. Check out and select bearing with properclearance
7. Verify and substitute bearing
eight. Check the quantity of oil 1st, way too a lot or so small will influence operation, then check the high quality of oil, especially applicable temperature
nine.Check and eradicate, the triggers of can not get oil might relevant with oil top quality, speed,wore of oil splash ring and oil circulation
ten. Verify the program of pressure lube

Vibration and noisy

one. Particular working level B is not design and style pointnot design and style level minimal or higher will trigger vibration and noisy
2. Insecure basis
3.Loosened anchor bolt
four.Insecure piping supports
5.Piping resonance
7. 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 relationship
12. Worn bearing
13. Shaft curved
fourteen. Friction in rotating elements
15.Loosened or broken rotating elements

one. Alter program particular operating level or pump style parameters
two. CZPTen foundation
3. Tighten anchor bolt
four. CZPTen piping supports
five. Expanding the length between pump discharge and elbow, use vibration-absorptive content in piping link, change piping preparations
six. Increase water amount, decrease suction line reduction, increase suction force by employing inlet throttle valveimprove pump cavitations overall performance
seven. Verify and get rid of, insert discharge valve
8. Clean impeller, cleanse impurity of pump and piping, check out strainer and suction nozzle
nine. Recentering
11. Exchange pin, rotate coupling 180°, eradicate error of pin  hole, modify the unit to insure there is a needed clearance in coupling
twelve. Mend or replace bearing
thirteen. Align or substitute shaft
14. Eliminate friction
fifteen. Get rid of, replace worn parts

drinking water attack

Air in pump or piping

Evacuate air and get rid of the leads to

Pump starts pumping then stops

1. Clogged in suction line or impeller
2.  Air  cell in piping
three. Lift also substantial  (legitimate NPSH as well reduced)
four. Air enter shaft seal
five. H2o level lessen way too significantly

one. Clear impeller, thoroughly clean impurity of strainer and suction piping
two. Enhance suction line, modify piping preparations, add discharge valve
3. Increase entrance force, increase suction stress by using inlet throttle valve lower the peak of pump installation adjust suction line if too a lot line decline
four. Verify strain and sum of seal liquid if they are suitable functioning specifications, exchange packing or other shaft seal, verify the mounting placement of water seal ring
5. Increase the least expensive h2o degree, boost entrance force, increase   suction   pressure by utilizing   inlet   throttle   valve


Horizontal Split Case Water Pumps


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