Water Supply System is mainly used for industrial booster and using in life for water supply.The system include the
Pumps,Pressure Tank,Controller and Accessories.The Pressure Water Supply System is the new generation of water supply system with features of energy saving and sanitary.
2.Specification
Flow: 2-160m3/h
Rotary Speed: 2900r/min
Head: 24-200m
Power: 1.1-110kw
Caliber size: 25-150mm(1inch-6inch)
Operation temperature: -15 °C - +120°C
Performance Range : (50HZ and 60HZ) According NFPA20
1. Capacity : up to 1100 m3/h
2. Head : up to152m
3. Speed : up to 3600rpm
4. Power : up to 250kw
5. Voltage : 220V to 10000V
6. Temperature range : Within -10 to 110 Deg C
7. Working pressure : Within 16bar
Material Construction and Configuration :
1. Pump Casing and Cover : Cast Iron GG25 ; Ductile Cast Iron GGG40 ; Bronze
2. Pump Impeller : Cast Iron GG25 ; Ductile Cast Iron GGG40 ; SS304 316 316L; Bronze
3. Shaft : Carbon steel AISI1045 ; Chrome Steel 40Cr ; SS AISI420 ; SS AISI4140 ; SS316Ti ; SS DIN1.4571 ; Duplex SS UNS S32205
4. Seal Type : Mechanical seal , Gland Packing.
5. Bearing Type : Ball Rolling
6. Shaft Sleeve : Cast Steel ; SS304 316316L; Duplex SS CD4-MCu ;
7. Wearing Ring : Cast Steel ; SS304 316316L; Duplex SS CD4-MCu ;
8. Flange Standard : ISO , DIN , ANSI .
Technical Advantage :
1. European Standard BS EN733/DIN24255 of performance and dimensions
2. Back-pull-out design, without having to disturb pump body and pipelines when servicing.
3. All the models only use 3 kinds of pump shafts and bearing cover, make parts exchangeable.
4. Impeller is optimized designed, inlet is enlarged, no whirlpool, deduct the water pump NPSH efficiently, which makes pump work stable with little noise.
5. Casing and casing cover use wearing neck ring structure, which makes pump easy to maintain, makes parts work longer. The replaceable seal ring, makes pump work efficiently in a long time
Pump Construction :
1. Non-self-priming, single stage, single suction, horizontal, axial suction and radical discharge, pump body is fixed by base.
2. Use bearing cradle, which can orientate bearing, prevent from radical vibration, improve the rigidity of rotary part.
3. Compacted shaft, use deep grove grease lubricated roller bearing
4. Connect pump and motor with semi-flexible coupling
5. Use standard wearable mechanical seal.
6. TEFC motor, size complies to IEC standard, installation type B3
Meet NFPA20 Cast Iron Multi-Stage Centrifugal Fire Fighting Pump Set
EDJ series is a packaged fire pump set,generally an automatic fire water supply system It consists of a main pump (driven by an electrical motor),stand by pump (driven by diesel engine) and a jockey pump.This model comes equipped with a separate controller,or one that is attached to the skid,The package also contains discharge valves,common header,and accessories.
2. Working Principle
Generally the pipeline network’s pressure is between the low pressure P1 and the high pressure P2.When the above pressure is lower than P1,the pressure maintaining pump will start automatically and not stop until the pressure rises gradually to P2.Due to the pipeline network’s leakage,its pressure will drop to P1 gradually,and then the pressure maintaining pump will start automatically again.with such a repeated process,the pipeline network’s pressure is maintained between P1 and P2 all the time.when the pipeline network’s pressure can’t be maintained between P1 and P2 (for instance,when the water consumption increases a lot) and drops to the minimum pressure P3,the electric pump will start automatically and the pressure will rise to Pw and meet the need for fire water supply,if the mains supply is power-off or the electric pump fails,the pressure will continue to drop from P3 to the ultimate pressure P4.then the diesel pump set will start automatically,and the pressure will rise to Pw and meet the need for fire water supply.the electric or diesel pump shall be stopped manually after human judgment (except automatic switching ).
3.Each pump information(E+D+J)& Controller Information
.Diesel engine pump
The pump is Horizontal Centrifugal Multistage Pump.
Flow Rate: 3.75-500 m3/h
Rotary Speed: 1450rpm,2950rpm
Head: 19-650m
Power: 2.2kw-1050kw
Calibre:40-250mm
Operation temperature range ≤ 105 ℃
The diesel engine is fixed on the base with anti-vibration rubber pads and the pump is directly coupled to a diesel engine through flexible coupling, According to the power output of the engine the electrical system,the diesel engine can be Cummins,Deutz,Perkins and Other China brand engine(Shangchai,Yuchai,ec.) and it consists of alternator, started motor, fuel system, lubricating system, exhaust system, etc.
Electric motor pump and Jockey pump
The electric pump is horizontal multistage pump,we also can choose end suction pump and split case pump,just as per client's pump specs requirement.
The motor is squirrel cage industrial type and foot mounted suitable for 3 phase, with required hose power rating.
The Jockey pump specs will be choosed as per Diesel engine & electric motor pump specifications.
Controller Information
The common controller is fabricated from mild steel and epoxy powder coated to red color. The enclosure id IP 54 rated and having all the required controls complying with the applicable standards (NFPA).
Manual starting: If set up for the”Manual”position with the black 2# three-way switch on the control panel mode,That you can use “Manual” start button and “Manual” stop button to control diesel engine pump start or stop. when the black three-way switch to the”stop”position,diesel pump can’t work.
Automatic starting: If set up for the”Auto”position with the black three-way switch on the control panel mode,it will receives an effective fire alarm signal to control diesel pump start or stop. Through the pressure controllers on the common outlet pipe to achieve pressure control.first, use two 1” 1.5 square signal lines to connect between the pressure controller normally open contacts and the control cabinet’s terminal No. 111 and 127. then, set a low-value and high-pressure for pressure controller to achieve low-voltage to start pump and high-pressure to stop pump. Last,if the electric main pump is overload,the diesel engine pump will start.
