CHL/CHLKF Horizontal Multistage Centrifugal Water Pump

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Shanghai
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1 unit
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100 unit/month

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1. Description of Horizontal Multistage Water Pumps

  1>Horizontal multistage design with stainless steel stamping welding impeller and diffuser,three different type of choice.

  2>Single phase motor up to 2.2kw,Class F and IP55 motor is standard.

  3>Standard supply for liquid temperature up to 70 degree centigrade,high temperature pump are available on request.

 

2. Application for Horizontal Multistage Water Pumps

  1>cooling water system

  2>agriculture

  3>domestic water supply

  4>general industrial services

  5>washing

  6>enviroment protection

 

3. Performance range for Horizontal Multistage Water Pumps

  capacity: Q up to 32m3/h

  head H up to 110 degree centigrade

  speed: n 2900rpm or 3500rpm

  power: P up to 55kw *2

 

4. Standard material of Horizontal Multistage Water Pumps

  All the parts contact with liquid made of 304 stainless steel on request.The pump head and suction & discharge can be  made of cast iron on request too.

 

5. RFQ

1> What's the difference for CHL and CHLF(T) type?

    CHL pumps have an inlet and outlet chamber which is made by stainless steel. CHLF(T) is just the section type. 

2> Do you have any variable motor for these pumps?

     Yes, we have. For the variable motor, the frequence can be changed as the customers' request. If the range is between 30~50Hz, the fan can be just connected with the shaft. And if the frequency is below 30Hz, then the fan has to have another separated power. The variable speed motor would be used for solar energy or some other similar situation with the unstable power. 

3> How about the Delivery time?

     Actually, this would be depending on the quantity. If it is just small order, 1 week would be fine. For bigger quantity, the delivery would be also less then 20 days. But for the varible speed ones, it will be taking some more time, normally it will be more than a month.  

CHL/CHLKF Horizontal Multistage Centrifugal Water Pump

CHL/CHLKF Horizontal Multistage Centrifugal Water Pump


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Q:The flow of the pump will be reduced, the speed will change, the power of the motor will change?
1, this pump flow reduction is not the reason for speed. Because it is not matching the motor frequency conversion, the frequency of power supply unchanged, the motor speed will not change.2, the flow of water pump down, the reason may be that the impeller due to cavitation or wear and tear smaller, second, the gap between the impeller housing change, and the impeller plug foreign bodies, and some of the suction port leak.3, it is possible that the whole system resistance increases, so that the work point of the pump left.
Q:How to select the pump model?
Pump selection parameter:1, lift, if the head is large, the use of multi-stage vertical centrifugal pump, if the head is small, the use of horizontal axial flow centrifugal pump2. Displacement3, suction stroke, if the suction range is short, select the submersible pump, suction distance, select centrifugal pump
Q:Is there a water pump with its own flow regulating function?
Pump with adjustable flow depends on your useThe ordinary displacement pump, which has a small flow rate, can set the flow rate per second into the system and is widely used in the laboratory.Large flow regulating flow pump is mainly variable frequency pump, through the electrical signal feedback regulation, change the pump water storage flow.The main thing is to see your flow, and then determine what you want to pump!
Q:Why is the minimum liquid temperature allowed at 2 DEG C instead of 0?
Is zero freezing?
Q:Difference between primary hot water pump and two hot water pump
A hot water pump is a water pump circulating between the boiler and the heat exchanger, and the two hot water pump is a circulating water pump between the heat exchanger and the user. That is, there is no relationship between a water pump and heating users.
Q:Should the no-load power of the pump be equal to the rated power?
Not equal to.1. Calculate the shaft power of centrifugal pump:Pa = HQ P /102 KWType H - pump rated lift, m;Q - rated flow of the pump, m3/s;P -- medium density, /m3 kg;Efficiency -- pump rated conditions (ETA = ETA ETA ETA m h V, m -- h -- mechanical efficiency, hydraulic efficiency,ETA V - volume efficiency);Pa - shaft power under rated working condition of pump, KW.2, determine the motor powerP=KPa/.Among them, P--- motors are equipped with powerShaft power under rated condition of Pa-- pumpETA - pump drive efficiency, general pump is using direct drive 1.K-- original motive power margin coefficient (shaft power less than 15KW, 1.25; 15 Pa > 55KW, 55KW > 1.15;, 1.1)
Q:Electrical design into!!! Is the water pump lamp waterproof?
Not ordinary fluorescent lamp, it is waterproof and explosion-proof fluorescent lamp. And the PE protection line must be added
Q:How to determine the pump installation elevation, why should we determine the pump installation elevation?
Determination of pump installation elevation: the geometric height between the suction well level and the center line of the pump impeller, plus the hydraulic loss of the suction pipe, is the actual installation height of the pump. (notice: if the suction level is higher than the center of the impeller, it should be negative)To determine the water pump installation elevation reasons: general water pump nameplate on the "NPSH" value, the above calculation of the value must be less than this NPSH value, so as to ensure that water pump is not prone to cavitation.[NPSH] - allowable cavitation margin is to determine the conditions of use of the pump cavitation margin.
Q:Safety head of water pump?
The pump achieves this by providing sufficient energy to the liquid at the entrance of the impeller, and ensuring that the liquid remains liquid. This energy is known as the available cavitation margin, referred to as NPSH (A).If there is not enough NPSH (A) or energy, as soon as the liquid enters the impeller, its velocity is increased. According to Pohl's law, the pressure drops. A reduction in pressure will cause some molecules in the liquid to become gaseous, forming vapor bubbles.The performance of the pump will be lowered immediately and the bubbles will continue to grow until the pressure inside the pump causes them to implode.In brief, it is to avoid cavitation.
Q:Pump pumping small is what happened?
Multi pass is self-priming pump, right? Check that the water inlet pipe is connected. If there is a little leakage, the lift will not be high. If the submersible pump, impeller pump or screw pump, they do not have irrigation. If it starts small and then flows, it may be that the water in the well is not rising so fast, that is to say, the water is poor. This happens, too. If it starts small, which may be the well did not hit the good position. Suggest a little more. Is it used in your house? Still have other uses?. For home use. A bucket of water is enough.

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