Submersible pump "water jet" question and answer

I think many will be interested to know about the submersible pump water jet in more detail, I will give you this opportunity in the form of a question - answer. There is little experience in the answers to these questions, the questions asked of our customers and then was drawn up this article about water jet pumps.

Question: Where a multi-stage centrifugal submersible pump water jet (water jet etc.)?

Answer: Water jet pumps water from a well, a well, public water supplies from and delivers the water through the pipe for further use. Ideal for the organization of automatic water supply system a country house and land for irrigation.

Question: What is the design of the submersible multistage centrifugal pump water jet?

Answer: High volume water jet has a hydraulic part and the motor. The hydraulic part is impellers, diffusers and shaft, and the motor has a stator and a rotor. Water taken from the bottom of the pump, the water enters through the small holes filtration. Water jet equipped with a special cable and plug for connection to the network.

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Question: What minimum internal diameter must be podayuschay pipe submersible pumps water jet?

Answer: The diameter of the supply pipe depends on the value of the hydraulic resistance, the smaller the diameter. the higher the resistance. The minimum diameter of the feed pipe for all submersible pumps must be at least 1 '' - 25 mm. When the diameter of the constricted flow path and through the pump less than 10 l.min. you run the risk of overheating the pump and it will burn.

Question: How much is the minimum depth of the water jet into the water?

Answer: The pump can be lowered to a minimum depth of 15-20 cm from the pump intake.

Question: What you need to know the customer, which is not always stipulated in the sale, if the submersible pump delivers highly-contaminated water at the well pumping for the first time?

Answer: When the pump is pumping strongly polluted water, it is prohibited to turn off, or it may simply impellers jam due to settling of the sand discharge pipe. He should be allowed to run. The pump can be disabled only after the line goes from clean water. During pumping well water jet pump, the pump pumps water with a high content of sand, sand may exceed the norm in a few times, and therefore, a high probability of wear antifriction washers. After pumping wells is recommended for maintenance of the pump, contact an authorized service center.

Question: Thereby providing high throughput for impurities among otchestvennyh and even imported household submersible pumps?

Answer: This is achieved by "floating" impellers and enlarged axial and radial gaps. It is due to this feature of the pump is able to pass through a 2 kg impurities in 1 m³ water.

Question: How long does water jet pump can operate continuously?

Answer: Pump can operate in the continuous mode, the pump is cooled by the flow of water pumped through itself.

Question: What is allowed per hour maximum number of inclusions in the water jet pump?

Answer: The maximum number of inclusions - no more than 20 inclusions / hour.

Question: Can I use a water jet pump 60/52 A in a well?

Answer: Submersible pumps water jet with the suffix "A" are used only wells, tanks or open ponds. In downhole use it is impractical because the pump with index "A" is completed electric float valve for switching-off the pump as the water inflow. Pump valve simply can not get through the hole.

Question: Where are and why there is a mechanical check valve at the pump?

Answer: Check valve is set not more than 7 meters from the pump or directly to the pump. I recommend installing an additional check valve in the accumulator to reduce water hammer in the water supply system.

Question: What should be the minimum allowable distance of the chamfer from the pump to the bottom of the well or wells?

Answer: The distance should not be less than 1 meter.

Question: What is the minimum amount of the accumulator must be to install an autonomous water supply system using a water jet pump?

Answer: The volume of the accumulator must be at least 50 liters. But accumulator can pick up and precisely using the formula. Provided that you know the maximum amount of water to be consumed (Amah liters / min.), As well as a submersible pump power, knowing the parameters, you can calculate the volume supply of water, using a table corresponding to the volume accumulator pick up Vt. Or you can use a calculator - Calculate the volume of the accumulator water.

Vt - a tank volume, liters;

A max - the maximum amount of water consumed, liters / min .;

P min - a minimum pressure at which the pump restart occurs;

P max - maximum pressure at which the pump is switched off;

P rres - initial pressure in the tank;

TO - coefficient corresponding to power P pump.

pressure indicators in the table are expressed in bars.

Question: Do I need a stabilizer for water jet pump? How to choose the stabilizer?

Answer: Stabilizer aligns mains voltage to the rated value 220-230V. Voltage stabilizer is selected based on the power of the submersible pump. Pump power is multiplied by a coefficient "3", it turns the power required of the stabilizer.

For example: Power submersible pump "water jet" 60/92 is 1100Vt * coefficient "3" = 3300 watts.

It needs a voltage regulator output of 3500 watts.

Question: I want to increase the pump cable length, whether to increase its cross section is required, why?

Answer: Increasing the length of the cable is required to increase, and its cross section, because when you increase the length of the cable increases and the voltage drop at the pump itself.

Table selection section electrical cable

Open cable provodkaSechenie, mm2Zakrytaya provodkaMedAlyuminiyMedAlyuminiyTok, AMoschnost, kVtTok, AMoschnost, kVtTok, AMoschnost, kVtTok, AMoschnost, kVt220 v380 v380 B220 B220 B220 v380 v380 in112,40,5153,30,75173,76,41,0143,05,3235,08,71,5153,35,7265,79,8214,67,92,0194,17,2143,05,3306,611245,29,12,5214,67,9163,56,0419,015327,0124,0275,910214,67,9501119398,5146,0347,412265,79,880173060132210501119388,3141002238751628168017305512201403053105233925100223865142417037641302849351352951751628

Question: How different centrifugal vibration and vortex pumps?

Answer:

centrifugal pump It has a long lifetime, a large capacity for impurities (sand) and a high efficiency.
vibration pump shorten the life of the water supply source (well, well), he breaks the aquifers, the wall of the well, the well has a high level of noise, low-life, and low performance.
vortex pump It combines the properties of centrifugal and volumetric machines, so the vortex pump offers high efficiency. However, for this type of pump efficiency characteristic change over time, because of the hydraulic pump has a small axial and radial clearances. After entering impurities (sand) wear of the working surface of the pressure-reducing characteristic of the consumable.

Question: I am going to cut the electric cable plug the pump to continue a guarantee?

Answer: If necessary, cut the electrical cable, for example, the power cable must be passed through the well head or just extend, in this case, the warranty is maintained. Be sure to connect the electric cable using shrink sleeve.