Water supply booster pump

One of the most common problems in urban and urban pumping systems is to regulate the pressure of pumped water into the pipes. Due to the fact that the amount of water consumed is fluctuating and does not have a certain amount, so in fixed pumping systems several electro motors constantly pump a certain amount of water into the pipes. Due to the decrease and increase of water consumption, different pressures are put on the pipe which causes problems in the water supply system

As a result of the increase in water pressure caused by the simultaneous operation of several electro motors, the pipe can be damaged by the pressure, also if several electromotor are switched off at the same time, it is possible that the water pressure inside the pipe may be reduced and the water at different points of the city or building disconnected. A pump booster is used to adjust this controlled pressure within the water supply and pumping system

Booster pump

The booster pump is an interconnected device of several electro pumps that are connected in parallel to provide total water consumption and total pressure applied to the system. Booster pumps can be used in urban water networks, in-house use, to create pressure for water use in firefighting, watering parks and green spaces in cities, buildings, passages, hospitals, airports and centers used in industry

Boosters design the pump in terms of two factors: maximum hourly consumption and minimum consumption pressure network

The main parts of a booster pump include: electro pumps, main chassis, motor collector, suction collector, pressure control equipment, control panel and steering wheel

The main part of the pump booster is its control panel and steering wheel and its pressure control equipment

Booster pumps are divided into two groups in terms of water pressure control: fixed cycle booster pumps and variable cycle booster pumps

Water supply fixed cycle booster pump

Fixed cycle water booster pumps are used for fire extinguishing systems, industrial irrigation system and tank filling. The benefits of fixed cycle booster pump can be achieved with the highest efficiency in the shortest time. The pump themselves are divided into two categories: one type is a self-service system with changeover or plc within a specific time range through a program that maintains itself and increases the depreciation of the pumps to an equal extent. The other type is without a changeover and plc, which pumps water into the circuit in an orderly manner and provides network pressure by adjusting the switches

Water supply variable cycle booster pump

Variable cycle water booster pump is used for drinking water consumption. Benefits of a variable distance booster pump include reduced energy, low damping and a stable pressure system in the building riser. The main difference between these booster pumps is the presence of an intelligent component in the electronic brain that performs the control of the dynamo motor in the structure based on HZ and the dynamo is not immediately affected by the 50 HZ current intensity, and this increase in current intensity is gradual

:Other features of this electronic piece include the following

Variable startup torque

Types of digital and analog inputs and outputs

Ability to copy parameters by copying code

Torque control capability in addition to cycle control

Ability to close up by Encoder board

:Variable cycle motors have some advantages over fixed dive motor

Complete constant pressure of the system

Complete constant pressure of the system, which is the main indicator of the variable cycle booster pump

Diaphragm tank

:Variable cycle booster pumps don’t require a diaphragm tank for the following reasons

Removing ram blow in the consumption grid due to the power pumps not turning on or off

Equal to the amount of water pumped by the pumps to the amount of water consumed

Complete system pressure constant and no need to store water at two pressures compared to booster pumps

Reduce the engine room occupancy

Reduce the engine room occupancy by removing the diaphragm source

couplings

Reduce depreciation of couplings and moving parts of electro-pumps

Service life of the booster pump

Increase the service life of the booster pump and its components

costs

Reduce service and maintenance costs

Continuous power consuming costs

Reduce continuous power consuming costs up to 30 % due to the proportion of power consumed by electromotor speed and deletion start-up compared to booster pumps when instant electro motors are turned on

The benefits of booster pump

One of the main benefits of booster water pump is to reduce power consumption if the pump discharge exceeds the first pump discharge, the second pump enters the circuit and adjusts the maximum discharge rate

Water booster pump components

Pump

Electrical panel

Input and output collectors

Connections

Chassis

Diaphragm tank

Pressure switch or sensor

Notable point

Each of the booster pump components may be made from the best brands available on the market, but the initial selection of the final assembly of the plc set and their commissioning, if not properly performed, alone cause the booster pump set to malfunction. On the other hand, to the extent that the use of a booster pump reduces energy consumption, reduces maintenance and comfort costs for consumers, non-expert selection and non-compliance with the require standards in this sector increases energy consumption and maintenance costs, and repairs are also a waste of time and dissatisfaction and comfort for consumers

Pay attention

Unfortunately, due to the over-attention of buyers to the initial market price of low-cost and low-cost systems, the boom has boomed. However, several times the initial purchase price will be spent on electricity, repairs and maintenance, which will not satisfy consumers. Therefore, the initial investigation of the buyers will both satisfy them and pave the way for more appropriate services by reputable and active companies

:Water advantages of a booster pump system in water supply systems include

Remove hydraulic kicks

Easy portability and installation

On the job service capability

Various electronic protection systems

Saving electricity consumption

Very low to very high hydration

Reduce pump depreciation

Decrease depreciation of plumping and building risers

there is a standby pump at the time the water pump is switched off

Pay attention

in the water booster pump system, the water pump can automatically or manually enter or exit the circuit independently of the other pumps. In this case, if one of the pumps is in need of repair, it can be removed from the circuit by turning off the pump key and repairing the valves by closing the valves so that the other pumps in the system can continue to operate

The most important tasks of the control

Switching to pumps

switching to pumps, which makes all the motors work in turn, reducing system depreciation

Adjust the internal of the electro pumps

The internal between the start of the electric motors is adjusted and does not start at the same time, meaning that the pumps do not start at the same time, but operate at a regular interval with each other

Planning control unit

If the pressure of the water supply system increases, the need to shut down the electric motors is felt, so it is the task pf the control unit to shut down the electric motors, but provided that all motors do not turn off simultaneously

Replacement of pumps

Alternate pump switches when the water pressure is constant and requires constant work, the control unit prevents the continuous operation of an electro pump by designing a time interval and the electro pumps are switched on and off. This will allow all the electro pumps to operate and then turn off to cool down after a while

۱ inverter cycle booster pump

In variable cycle booster pump, which contains only one inverter for sequential operation of the electro pumps, the control and command unit must be able to change the electrical circuit of the city and the inverter circuit and each of the electro pumps according to program alternation according to the alternation of alternating pump operation

In the booster circuit of the booster pumps, there are two circuits for each electro pumps,1) AC power circuit 2) power circuit with power output from inverter

Determination of booster capacity of Pars dama water pump

Determining the amount of hygienic water consumption is possible through different methods that are not identical to the different consumption patterns in different communities and uses

By number of people and building use

One of the fastest ways to calculate the amount of water passage for health purposes is to calculate it based on the number of people and type of building used and consider the coefficient of consumption

:The simplest method is to calculate the consumption rate of residential buildings using the following formula

(Q = (A * B * T * f) / 1000 m³ / hr)

Q: flowrate in cubic meters per hour

A: number of residential units in the building

(B: the number of people stationed in each unit (average people per unit area and number of bedrooms

(T: average per capita water consumption per day (depending on the type of apartment and the lifestyle

F: coefficient of coincidence

 

Based on standard charts DIN1988

In this method, the maximum amount of water consumed V ⁰ PEAK is calculated by summing the total consumption of VCAL sanitation and considering the type of application 

SFU consumption unit method

The scientific method of estimating hygienic water consumption is based on the ASHARE reference standard and national building regulations Issue 16 (health facilities). And also is based on calculating the consumption unit hygienic (F.U) and taking into account the demand coefficient

The flow rate of each sanitary fixture is either in terms of supply fixture unit or SFU taking into account the demand coefficient.  A unit consumes 7.5 gallons per minute and this is a simple toilet tap

Hygienic water consumption calculations are thus more accurate and spend more time calculating. And the capacity calculated in that is based on a higher standard of living and will be higher than other methods

Pars dama water supply booster pump

Example

Calculate the amount of water consumed by a 160-unit residential complex

۱۲۵ apartment unit, a bathroom, a bedroom with 80 meter per square. Each apartment 4 people

۳۵ apartment unit with two bedrooms each one 180 square meter and a bathroom with a bathtub. Each apartment 4 people

:First method

For 160-unit residential building, you get about 15 cubic meters per hour and 150 cubic meters per hour. This is an approximate estimate of the minimum capacity 

:Second method

the maximum per capita consumption of an apartment equals 150 liter and the coefficient of consumption is 160 units of 0.25 % equivalents

Q _۱ = (۱۲۵ * ۴*۱۵۰* ۰٫۲۵) / ۱۰۰۰ = ۱۸٫۷۵ m³ / hr

The maximum per capita consumption of a two bathtub (luxury apartment) is equal to 200 liters and a coefficient of consumption of 160 apartment units is equal to 0.25 liters

Q₂ = (۳۵*۴ *۲۰۰ * ۰٫۲۵) / ۱۰۰۰ = ۷ m³/hr

Total Q = Q1 + Q2 ~ 26 m³/hr

:Third method

Sink: 160 * 0.14 = 22.4

Washing Machin: 160 * 0.25 = 40

Wc: 160 * 0.7 = 112

Private bath: 160 * 0.7 = 112

Guest bath: 35 * 0.7 = 24.5

lit/s ∑۳۱۱ V⁰cal ≅

:forth method

the 80 meters’ flats have consumption units:  Iranian toilet and shower facilities- bathroom with toilet and a flash tank, a sink and a washing machine. The SFU amount for each residential unit is equal 2.7 and calculate by following

sink: 4.1

washing machine: 4.1

from the service consumption series, we consider Iranian toilet as the biggest consumer due to the lack of simultaneous use: 2.2 toilet

from the bathroom service costs set, we consider the toilet as the largest consumer due to the lack of simultaneous use.2.2 toilet

total unit of consumption: 2.7

Determine the minimum booster pressure of the water pump booster

The minimum booster pressure or height of the booster pump must meet the minimum pressure required by the consumer while overcoming the height of the highest consumer and the static pressure drop caused by water passing through the pipes and fittings

Calculations

H _a: suction height of power supply

H _b: positive suction height from power supply or minimum water inlet pressure

H _imp: the highest consumer height from the boiler pumps station

H _d: minimum pressure behind the customer

H _j: static pressure drop caused by pipes, fitting and valves

H _tot: minimum total booster pressure

If the power supply is higher than the booster pump

H _tot = H _imp + H _a + H _j

If the power supply is lower than the booster pump

H _tot = H _imp + H _b + H _d + H _j