Vertical Multi-Stage Centrifugal Water Pump

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1 unit
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100 unit/month

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Product Description:

Quick Details

  • Place of Origin: Shanghai, China (Mainland)

  • Model Number: DL

  • Theory: Centrifugal Pump

  • Structure: Multistage Pump

  • Usage: Water supply

  • Power: Electric

  • Standard or Nonstandard: Standard

  • Pressure: Low Pressure

  • Liquid: water below 85C

  • Certificate: ISO9001,ISO14001,OHSAS18001

Packaging & Delivery

Packaging Details:Wooden-case
Delivery Detail:30 days

 

Specifications
DL series vertical multi-stage centrifugal water pump
1. Diameter: 40 - 200mm
2. Flow: 6 - 300m3/h
3. Head: 24 - 280m


 

DL series vertical multi-stage centrifugal water pump.

 

1) Features:
a) Compact structure
b) High efficiency
c) Low noise


2) Applications:
a) Water supply for high building
b) Water supply for city town
c) Heat supply & warm circulation


3) Technical data:
a) Diameter: 40 - 200mm
b) Flow: 6 - 300m3/h
c) Head: 24 - 280m
d) Medium temperature: -20~120 oC
e) Operation pressure: ≤ 30bar

 

 

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Q:TDH what units are present in the pump parameters?
In the pump parameters, TDH is the head of President (Ying Chi).The formula is as follows:TDH (Ying Chi) = total head (Ying Chi) = (- water pressure readings + drainage pressure gauge (drainage dynamic head - water head + (drainage pressure gauge - water pressure elevation correction table elevation correction)
Q:What is the difference between self-priming and non self suction?
The self-priming condition of the centrifugal pump is that a small water tank is attached to the pump body. Don't use water every time you start. No suction, no water tank. And the use of volumetric Self-priming pumps, such as car cleaning, high-pressure pumps are in this category.
Q:Why can domestic pumps sometimes pump water and sometimes not?
You pump 1. is fully automatic, 2. have small pressure tank 3., stop valve should be 1., tap water is interrupted, 2. water intake, water out of harmony
Q:How large is the starting current for a 1.5 kW submersible pump?
1KW about 2 current, so the rated current is about 3A, and the starting current is usually 3-8 of the rated current, that is 9-24A.
Q:What will the water pump reversal situation?
The same will reverse pump water, but the head and the pressure greatly reduced, I just finished debugging a pumping station, Stephen multi-stage pump, installation of equipment: multistage water pump motor power 4 75KW 76% head 100 meters, frequency control, motor nameplate nominal current of 143. According to the direction of the motor steering pump mark OK set the start time of 28 seconds after 5HZ boot head start frequency can reach 50 meters (at that time did not install the pressure gauge cannot observe the water pressure of current) in early 118 about 3-5 minutes after the current is reduced to about 97, there are inspection found no problems, suspected pump problems, suspected foot valve not completely open, the reason cannot exclude the end of valve, almost in despair when the thought is not marked in the direction of the pump, re set to restart the current 129.5A to observe that later installed capacity reached 0.55MPa duct pressure gauge head close to the design requirements, the problem on the manufacturer's mark is reverse.
Q:Water pump part is stainless steel, which part is it?
The part of the pump head, that is, the part of the flow
Q:90kw pump star delta start, in the end to use the circuit breaker, AC contactor (Star contactor, angle contactor), what kind of thermal relay?
Imports, such as Schneider, press: plastic case press 250A, contactor select 115 of 2, 95 of 1 can.Domestic recommendations: Press: plastic case press 250A, contactor 160, 2, 115 of the 1 can.
Q:Safety head of water pump?
Pump selection should pay attention to the following points: (1) to meet the maximum load conditions, should try to reduce the waste of energy; (2) rational use of high efficiency section of the pump; (3) using the same type pump as much as possible, the type of neat, standby each other; (4) to the selection of large pump according to the actual situation, but also should consider taking into account the size, flexible deployment; (5) lack of H value changes, different types of collocation is optional pump operation. (6) to ensure the water conditions, take care of basic level, reduce the pumping depth; (7) consider the standby unit necessary; (8) check the fire with water; (9) considering the development, implementation of the combination of short and long term; (10) to the selection of water pump type local mass production.
Q:How many lift pumps should be used for 100 meters tall buildings?
35m lift around. HVAC pump lift is generally between 5~50m, the selection of the head is mainly to see the difference between water pressure. As head of 35m as an example, if the inlet height of 60m, so the theory of height =60+35=95m, if all pipe closed air conditioning water system, and resistance of the equipment for water is equal to the pressure difference is equal to the pump head to choose your height, and out of the water is the same, the resistance loss of lift all into the water. The calculated resistance loss is needed to pump lift. The resistance component (1) chiller resistance at 60-100kpa (2) water collector resistance in 120-200kpa (3) 20-50kpa (4) air terminal equipment body resistance is generally not less than 40kpa so 100m building the resistance calculation of estimated value = (1) 80kp+ (2) chiller resistance pipe, the collector resistance (140kpa+ 3) air terminal equipment 40kpa+ (4) body resistance 50kp=310kpa safety factor of 10% 320x1.1=341kpa H= P/ (head of pressure water density * acceleration of gravity g =352000/ (10m) X9.8 =34.8m fand) so we head for 35 meters
Q:Pump power ratio design is small, the problem is big?
No problem, despite the good use of different water pump factory manufacturing process is different, the product of the rich value of different factors, power difference is inevitable, as long as the flow and head to meet your use requirements.The calculation formula tells you: your flow is 72 tons / hour, lift 90 meters, motor power P=2.73HQ/0.75*1.2=28.5KW

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