Russian pressure booster. Pump installations. booster pump cost

Today on Russian market a huge selection of booster pumps for water supply and fire extinguishing, heating, air conditioning, etc.

And often designers, specialists of installation organizations or purchasing departments are concerned about the correct selection of ready-made modular solutions. In this article, we will consider the main criteria that should be followed when choosing a pumping unit, and since it is initially necessary to determine the system in which the pumping unit is planned to be used and take into account its specifics, here we will restrict ourselves to the principles of selecting a pumping unit for water supply systems.

So, the selection of the installation is carried out in several stages:

• choice of pump type;
• determination of its operating characteristics and selection of the number of pumps in the installation;
• choice of type of regulation.

Pump types

For water supply, vertical multistage pumps specially designed for this application, with high pressure and relatively low productivity, are better suited. And for those cases when the flow rate in the system is quite large (from 25 m3 / h and above), cantilever pumps are suitable, but not all manufacturers use them in their installations.

It should be taken into account that vertical multistage pumps, which have a steep operating characteristic, at high capacities begin to lose in price (sometimes twice or more) to cantilever pumps, which have more simple design and consequently lower cost. However, at low productivity (when the water intake in the system is minimal) with a relatively large head, cantilever pumps cannot compete in price with vertical pumps that have a smaller motor and are able to operate over the entire range, providing the required parameters.

Consider an example on pumps that are used for the production of GRANFLOW ® pumping units ( own production ADL companies).

Thus, console pumps Ebara series 3M40 (Japan) can operate for a long time in the range of flow rates from 12 m3/h. At lower flow rates, the pump can operate in a short-term intermittent mode. Therefore, if the water flow in the system drops below 12 m3/h for a long time, then it is better to choose an installation based on vertical pumps, for example, the DPV32 series (Netherlands), for which operation in the entire range from 2-3 m3/h to 40 m3 /h is the normal operating mode.

For comparison, the following diagram shows the operating curves of the 3M40-160 4kW and DPVF32-20 4kW pumps:

From this diagram it follows that the pumps have electric motors of the same power and have approximately the same performance / head curves. However, the minimum output of a cantilever pump for continuous operation must be at least 12 m3/h.

Accordingly, if you expect that the water flow in the system will fall below 12 m3/h, then it is more expedient to choose an installation based on vertical pumps DPVF32-20, which will operate in normal mode over the entire range, starting from 2-3 m3/h.

When choosing optimal solution we should not forget about the price. So, the price of the vertical pump DPVF32-20 will be 1.6 times more than 3M40-160. The difference will be more noticeable, the more pumps in your installation.

This is all about cold water and hot water in central water supply systems, but it should be borne in mind that modular solutions are also used at water intake units, for example, at second lift stations. To solve such problems, installations on cantilever pumps will be the only solution, because. Here we are talking about very high performance.

For example, installation on the basis of 6 console pumps 3LS80 (up to 240 m3/h) will provide a flow rate of up to 1200 m3/h with five working pumps, while one pump will be in reserve.

Determination of pump performance and selection of the number of pumps in the installation

Let's say we need to provide a performance in the system of 30 m3 / h at a head of 40 m.w.s.

This task can be solved in several ways. Let's take a look at them and highlight them. distinctive features and select the most preferred option for us.

Option 1. To begin with, we will select an installation based on vertical DPV pumps. Let's take the scheme 1 pump working / 1 standby. With such a scheme, each pump in the installation must provide a working point - a capacity of 30 m3 / h at 40 m.w.s. head. The pump brand DPVF45-20 7.5 kW is suitable for us, which has a small margin (1-2 m.v.s.) relative to the required pressure of the operating point, as can be seen from the following diagram:

This reserve will be spent on losses in the inlet and outlet collectors of the unit, as well as on the opening of the check valve (on average, for all DPV-based units, these losses do not exceed 1-3 m.w.s.).

Then the installation is suitable for us: GRANFLOW ® UNV 2 DPVF 45-20 7.5 kW RR/CR, where:

• 2 - number of pumps
• 7.5 - power of one pump
• PP/CR - relay/frequency control

Option 2. Sometimes it is advisable to choose an installation on more pumps than two. This means that it is better for the hydraulic system and for the power supply when two pumps of smaller power, say 4 kW, are turned on, rather than one larger one (for example, 7.5 kW).

And also for installations with a frequency type of regulation, it is important to take into account that in its operation the frequency converter changes the speed of the pump motor in order to maintain a balance between the pressure required by the system and the pressure developed by the pump. That is, the converter uses a direct relationship between pressure and power frequency. When the power frequency drops to 35 Hz (programmable parameter), the frequency converter turns off the pump to avoid its operation in an unfavorable mode (at this frequency, the pump efficiency tends to 0, plus the hydraulics start to cool poorly at low flow (this applies mainly to hot water systems )). Therefore, most often frequency regulation it makes sense to select the installation on a larger number of pumps. However, it is not worth it to excessively increase the number of pumps in the installation - this can significantly increase its cost, while it will not bring any advantages in operation.

Statistics confirm this: of the thousands of pumping units for water supply manufactured by ADL from 2002 to 2009, about 80% are units with three pumps (two working + one standby).

So, we will select for the same 30 m3/h and 40 m.w.s. such an installation.

To do this, we divide the flow rate by two pumps (the flow rates of two pumps operating in parallel are added), we leave the pressure the same, since it does not change. Thus, each of the working pumps will be selected for the parameters - 15 m3 / h and 40 m.w.s.

It is worth introducing a flow correction in the form of 5-10%, and also give a head margin: 1-2 meters, if the installation is on vertical pumps, and 2-3 meters - if on the console.

Then the following 2 units will meet our request: GRANFLOW ® UNV 3 DPV 18-40 4.0 kW PP/CR and GRANFLOW ® UNV 3 3M32-200 4.0 kW PP/CR, where 3 is the number of pumps 4.0 is the power one pump PP/CR – relay/frequency control

Please note that the installed power of the pumping unit has become 12 kW, instead of 15 kW, as it was in option 1. In this case, it turns out that a three-pump installation will cost less than a two-pump station.

Returning to the selected 3-pump units, it should be noted that, despite the same power of electric motors and the number of pumps in their composition, as well as the complete similarity in functionality, the installation price for cantilever pumps will be significantly lower. Reason: the design of the cantilever pump is simpler, and as a result, the cantilever pump itself costs less in production. The lower cost of the 3M pump relative to DPV for the same operating point leads to significant savings when choosing a GRANFLOW ® UNV 3 3M32-200 4.0kW PP/PD unit. But if it is necessary to provide more pressure, a cantilever pump will cost more than a vertical multi-stage pump, which is designed to create large pressures with its steps. The console pump, which has a flatter characteristic, is able to develop a greater pressure only due to a significant increase in engine power. The result is a sharp rise in its price.

Based on these considerations, you can choose a four-, five- or even six-pump installation. In this case, the number of pumps in the system should not be artificially increased, but should rather be guided by the specific operating curves of the flow / head of the individual pumps. Also, an increase in the number of pumps is inevitable when it comes to high costs that only a few units can provide.

Types of regulation

As for the types of regulation, all types of regulation offered for pumping units can be reduced to two: frequency and relay.

Relay regulation. This is such a control option in which the signal from the control relay (mounted on the pressure manifold at water supply stations) when the pressure drops below the set value, is sent to the controller (in the general case). The controller, in turn, already starts the pumps themselves into operation either by direct start-up or through soft starters. With its cheapness and simplicity, this control method has one very serious disadvantage - it is impossible to smoothly regulate the pressure in the system. Physically, this means that the pump will turn on when the pressure in the system drops (someone opened the tap), pump water into the system, thereby increasing the pressure in it, and then, upon reaching the upper value at which the relay opens, turn off. Thus, there will be a constant on / off pump. This is not "useful" for the pump due to the fact that at the initial start-up the current exceeds the rated value by 3-5 times, which leads to heating of the motor windings. That is why each pump has a maximum number of starts per hour. If the recommended value of the allowed number of starts is exceeded, the motor windings may burn out, which will lead to the need to replace or rewind it. In addition to problems with the pump motor, frequent switching on of pumps, especially large ones, negatively affects the power supply network.

Despite the above disadvantages, relay control is quite often used in water supply systems and is cheaper than frequency control. In addition, you can always install a hydraulic accumulator at the outlet, which will reduce the number of pump starts, provide an additional supply of water in the system, and smooth out pressure peaks during pump starts.

Frequency regulation. This is the most common type of regulation for cold and hot water systems at the moment, based on sales statistics. The fact is that the frequency converter allows you to achieve significant energy savings (up to 60%!). By reducing the frequency of the pump motor current during the control process (for example, the water flow in the system has decreased), the frequency converter reduces the energy consumption from the network. At the same time, the optimum pressure in the system is maintained.

There are various frequency control schemes on the market. Among them, installations with built-in frequency converters (or with a frequency converter for each pump in the control cabinet) and installations with a single frequency converter in the cabinet are the most common.

Keep in mind that when, for example, you have a 2-pump plant with one working pump and one standby pump, or even when there is more than one working pump in the installation, the circuit with a single frequency converter in the cabinet does a good job of maintaining pressure and , switching between pumps as part of the installation, ensures a uniform operating time of their resource. In doing so, you save on the cost of one or more built-in standby pump converters.

Here are the main points to consider when selecting pumping units for water supply systems.

(PDF, 404.5 Kb) PDF

The plumbing system is a combination of various units and devices for providing water to a private house, apartment, enterprise. One of the elements of such a system is a liquid pressure booster. Low water pressure in the pipe causes malfunctions in the functioning of domestic household or industrial equipment. These situations can happen not only in private homes, but also in rooms that are connected to a centralized water supply. Expensive laundry and washing machines, plumbing fixtures associated with liquid can break from pressure drops. To avoid these troubles, it is necessary to install imperious pumps in the water supply system.

Advantages of a water pressure booster:

• Automatic control;
• Use of water from different sources;
• Full set;
• Low noise level;

Intelligent control box pumping system, presented on our website, allows you to automatically adjust to changes in the inlet water pressure. This results in significant savings electrical energy. The booster system, thanks to its compact dimensions, does not take up much space. Simple installation, allows you to install these devices yourself, without the involvement of outside specialists.

The main advantages of using a pressure booster system:

• Effective protection against malfunctions;
• Low power consumption;
• Possibility of installation in the house;
• Work from a water supply system, a well or a storage tank;

Convenient display shows necessary information during operation of the device. He will warn the owner in time about changes in the operation of the device. Masters from St. Petersburg will carry out installation and adjustment work.

Storm

NPO Promelektroavtomatika offers complete automatic pumping stations produced by RusPromEnergoSystems LLC.

Complete set of automatic pumping units for boosting pressure "Storm"

• Pump units from leading European manufacturers GRUNDFOS, WILO, KSB, mounted on a common base frame
• Receiving and pressure manifolds
• Ball Valves
• check valves, manometer, valves, pressure sensor
• Dry run protection relay
• Control cabinet

In addition, it is used shut-off valves and instrumentation of the DANFOSS company and control cabinets of NPP RITs LLC. The equipment is certified.

Application

• Fire extinguishing systems
• Pumping clean water and increase in pressure at waterworks, in residential buildings, hotels, industrial enterprises, hospitals, schools, etc.

Encoding decoding:

Control type:

• To- cascade control
• FROM- cascade control with soft start
• E- management using frequency converter(one worker, second hard reserve)
• And- control using a frequency converter

To order

The station is equipped with a RP control cabinet. Mounted on a common base frame. The plant is controlled in cascade, while the operation pumping units carried out as follows: working (e) + peak (e), i.e. additional. the pump(s) are automatically activated as needed. The performance of pumping stations is regulated by turning on or off the required number of pumps. The pumps are connected according to the minimum operating time, and disconnected according to the maximum operating time.

Cascade-type automatic pumping unit with a soft starter of the Shtorm-S series

To order

The station is equipped with a RPS control cabinet equipped with a soft start system.

Mounted on a common base frame.

The installation is controlled in cascade, while the operation of the pumping units is carried out as follows: working (e) + peak (e), i.e. additional. the pump(s) are automatically activated as needed.

Automatic pumping unit of an economical series with a frequency converter of the Shtorm-E series

Maintaining the set parameters occurs due to a change in the performance of pumping units, while the operation of the installation is carried out as follows: working (e) + peak (e), i.e. additional. the pump(s) are automatically activated as needed.

The Anmeks company manufactures at its production site and supplies throughout Russia high-tech pressure boosting units of the NAPOR series for various purposes and constructive, made on the basis of modern components of Russian and foreign production.

In our pressure boosting stations we combine both European components, for example, pumps that have proven themselves in Russian realities international concerns: LEO, KSB, Grundfos, Wilo, Lowara, DAB, Flygt, as well as our own developments: a modern logic controller of the SLK-1 series, graphical operator panels for serial products, power supplies, phase control relays, control cabinets of the KLASS series for control and protection of pumping units and others interesting solutions, allowing to ensure high quality, reliability and maintainability of the units produced.

Pumping stations are widely used in construction sites, in residential buildings, various industries food and chemical industry, private houses and cottages, systems of heating, circulation, watering and melioration. In a word, where it is necessary to provide the required flow and pressure, pressure boosting stations "NAPOR" are used.

In addition, urban areas for building are constantly decreasing, forcing construction companies increase the number of storeys of houses, and urban water supply cannot provide adequate pressure in the cold water and hot water systems at such a height of buildings. Monoblock stations that are completely ready for connection to networks help to solve the problem.

Structurally, the NAPOR pressure booster units are divided into the following subgroups according to the type of pumps used:

1. Horizontal multistage pumps type CM, MHI
2. Vertical multistage pumps type CR, MVI, Helyx, Movitec
3. Horizontal single stage pumps type NB, BL, Etabloc
4. Vertical single-stage pumps type TP, IL, IPL, Etaline, Etaline-R

All of the above allows us to say with confidence that using the equipment of our production, you, as a customer, receive technically competent solutions (optimal in terms of price, quality and delivery time), which will help you bring water supply to a high quality. new level when implementing their objects.

We provide a 2-year warranty for the supplied products, as well as provide services for design, installation supervision, installation and commissioning, provide after-sales service and after-sales service. We offer a range of turnkey services.

To calculate the booster station Russian production please contact our engineers by phone, or e-mail. You can also download the questionnaire or fill out an interactive form directly on our website. We are in as soon as possible We will provide all the necessary information and answer all your questions.

Thank you for your interest in the company and equipment manufactured by Anmex LLC. We hope the information on the site was useful and you found what you were looking for.