Automatic pressure maintenance unit Flamcomat (control via pumps)
Application area
AUPD Flamcomat is used to maintain constant pressure, compensate for temperature expansions, deaerate and compensate for coolant losses in closed systems heating or cooling.
*If the system temperature at the installation connection exceeds 70 °C, it is necessary to use a Flexcon VSV intermediate vessel, which provides cooling working fluid before installation (see chapter "Intermediate vessel VSV").
Purpose of Flamcomat installation
Maintaining pressure
AUPD Flamcomat maintains the required pressure in
system in a narrow range (± 0.1 bar) in all operating modes, and also compensates for thermal expansion
coolant in heating or cooling systems.
Installation of Flamcomat AUPD as standard
consists of the following parts:
. membrane expansion tank;
. Control block;
. connection to the tank.
The water and air in the tank are separated by a replaceable membrane made of high-quality butyl rubber, which is characterized by very low gas permeability.
Operating principle
When heated, the coolant in the system expands, which leads to an increase in pressure. The pressure sensor detects this increase and sends a calibrated signal to
Control block. The control unit, which, using a weight sensor (filling, Fig. 1), constantly records the values of the liquid level in the tank, opens solenoid valve on the bypass line through which excess coolant flows from the system into the membrane expansion tank (the pressure in which is equal to atmospheric pressure).
When the set pressure in the system is reached, the solenoid valve closes and blocks the flow of liquid from the system to the expansion tank.
As the coolant in the system cools, its volume decreases and the pressure drops. If the pressure drops below established level, then the control unit turns on
pump. The pump operates until the pressure in the system rises to the set level.
Constant monitoring of the water level in the tank protects the pump from running dry and also protects the tank from overfilling.
If the pressure in the system goes beyond the maximum or minimum, then, accordingly, one of the pumps or one of the solenoid valves is activated.
If the performance of 1 pump in the pressure line is not enough, the 2nd pump will be activated (control unit D10, D20, D60 (D30), D80, D100, D130). The Flamcomat automatic propulsion unit with two pumps has a safety system: if one of the pumps or solenoids fails, the second one is automatically turned on.
To equalize the operating time of pumps and solenoids during operation of the installation and increase the service life of the installation as a whole by two times pumping units used
“working-standby” switching system between pumps and solenoid valves (daily).
Error messages regarding pressure value, tank fill level, pump operation and solenoid valve operation are displayed on the control panel of the SDS module.
Deaeration
Deaeration in the Flamcomat AUPD is based on the principle of pressure reduction (throttling, Fig. 2). When the coolant under pressure enters the expansion tank of the installation (non-pressure or atmospheric), the ability of gases to dissolve in water decreases. Air is separated from the water and discharged through an air vent installed in the upper part of the tank (Fig. 3). To remove as much air as possible from the water, a special compartment with
PALL rings: this increases the deaeration capacity by 2-3 times compared to conventional installations.
In order to remove as much excess gas as possible from the system, an increased number of cycles as well as an increased cycle time (both depending on tank size) are pre-programmed into the factory installation program. After 24-40 hours, this turbo deaeration mode switches to normal deaeration mode.
If necessary, you can start or stop the turbo deaeration mode manually (if you have an SDS module 32).
Recharge
Automatic make-up compensates for the loss of coolant volume occurring due to leaks and deaeration.
The level control system automatically activates the make-up function when required, and the coolant enters the tank in accordance with the program (Fig. 4).
When the minimum coolant level in the tank is reached (usually = 6%), the solenoid on the make-up line opens.
The coolant volume in the tank will be increased to the required level (usually = 12%). This will prevent the pump from running dry.
When using a standard flow meter, the amount of water may be limited by the make-up time in the program. When this time is exceeded, action must be taken to correct the problem. After this, if the make-up time has not changed, the same volume of water can be added to the system.
In installations where pulse flowmeters are used (optional), make-up will be turned off when the programm is reached.
limited volume of water. If the make-up line
The Flamcomat AUPD will be connected directly to the drinking water supply system, it is necessary to install a filter and backflow protection (hydraulic shut-off valve is an option).
Main elements of the Flamcomat automatic transmission unit
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AUPD Flamcomat М0 GB 300
The development of large cities inevitably leads to the need to build high-rise multifunctional office and retail complexes. Such high-rise buildings present special requirements to water heating systems.
Many years of experience in the design and operation of multifunctional buildings allows us to formulate the following conclusion: the basis for the reliability and overall efficiency of the heating system is compliance with the following technical requirements:
- Consistency of coolant pressure in all operating modes.
- Constancy chemical composition coolant.
- Absence of gases in free and dissolved form.
Failure to comply with at least one of these requirements leads to increased wear and tear of heating equipment (radiators, valves, thermostats, etc.) In addition, the consumption of thermal energy increases, and accordingly, material costs increase.
Pressure maintenance, automatic replenishment and gas removal installations from Anton Eder GmbH can ensure the fulfillment of these requirements.
Rice. 1. Diagram of a pressure maintenance installation manufactured by Eder
EDER equipment consists of separate modules that provide pressure maintenance, replenishment and degassing of the coolant. Module A for maintaining coolant pressure consists of an expansion tank 1, in which there is an elastic chamber 2, which prevents contact of the coolant with air and directly with the walls of the tank, which distinguishes Eder expansion units from membrane-type expanders, in which the walls of the tank are subject to corrosion due to for contact with water. When the pressure in the system increases, caused by the expansion of water when heated, valve 3 opens, and excess water from the system enters the expansion tank. When cooling and, accordingly, reducing the volume of water in the system, pressure sensor 4 is activated, turning on pump 5, pumping coolant from the tank into the system until the pressure in the system becomes equal to the set one.
Make-up module B allows you to compensate for coolant losses in the system resulting from various types leaks. When the water level in tank 1 decreases and the specified minimum value is reached, valve 6 opens and water from the cold water supply system enters the expansion tank. When the user-specified level is reached, the valve turns off and make-up stops.
When operating heating systems in high-rise buildings, the most pressing issue is degassing of the coolant. Existing air vents allow you to get rid of the “airiness” of the system, but do not solve the problem of purifying water from gases dissolved in it, primarily atomic oxygen and hydrogen, which cause not only corrosion, but also high speeds and coolant pressures, cavitation destroys system devices: pumps, valves and fittings. When using modern aluminum radiators due to chemical reaction Hydrogen is formed in the water, the accumulation of which can lead to rupture of the radiator housing, with all the ensuing “consequences”.
The degassing module C from Eder uses physical method continuous removal of dissolved gases due to a sharp decrease in pressure. When the valve 9 is briefly opened in a given volume (approx. 200 l) 8 within a fraction of a second, the water pressure exceeding 5 bar drops to atmospheric pressure. In this case, a sharp release of gases dissolved in water occurs (the effect of opening a bottle of champagne). A mixture of water and gas bubbles is supplied to the expansion tank 1. The degassing tank 8 is replenished from the expansion tank 1 with water that has already been cleared of gas. Gradually, the entire volume of coolant in the system will be completely cleared of impurities and gases. The higher the static height of the heating system, the higher the requirements for degassing and constant coolant pressure. All these modules are controlled by a microprocessor unit D, which has diagnostic functions and the ability to be included in automated systems dispatching.
The use of Eder installations is not limited to high-rise buildings. It is advisable to use them in buildings with an extensive heating system. Compact installations EAS, in which an expansion tank with a volume of up to 500 l is coupled with a control cabinet, can be successfully used as an addition to autonomous systems heating in individual construction.
The company's installations, which successfully operate in all high-rise buildings in Germany, are the choice in favor of a modern engineered heating system.
SPL® pressure booster units are designed for pumping and increasing the pressure of water in domestic, drinking and industrial water supply systems various buildings and structures, as well as in fire extinguishing systems.
This is modular high-tech equipment consisting of a pump block, including all the necessary piping, as well as modern system management, guaranteeing energy-efficient and reliable operation, with all the necessary permits.
The use of components from leading global manufacturers taking into account Russian standards, norms and requirements.
SPL® WRP: Designation structure
SPL® WRP: pump set composition
Frequency control for all SPL® WRP-A pumps
The frequency control system for all pumps is designed to monitor and control standard asynchronous electric motors of pumps of the same size in accordance with external control signals. This system control provides the ability to control from one to six pumps.
Operating principle of frequency control for all pumps:
1. The controller starts the frequency converter, changing the rotation speed of the pump motor in accordance with the readings of the pressure sensor based on PID control;
2. at the beginning of work, one frequency-controlled pump is always started;
3. The performance of the booster unit changes depending on consumption by turning on/off the required number of pumps and parallel adjustment of the pumps in operation.
4. if the set pressure is not reached and one pump operates at maximum frequency, then after a certain period of time the controller will turn on an additional frequency converter and the pumps are synchronized by rotation speed (pumps in operation operate at the same rotation speed).
And so on until the pressure in the system reaches the set value.
When the set pressure value is reached, the controller will begin to reduce the frequency of all operating frequency converters. If the frequency of the converters remains below the specified threshold for a certain time, additional pumps will be switched off one by one at certain intervals.
To equalize the service life of pump electric motors over time, a function has been implemented to change the sequence of turning on and off pumps. It also provides for automatic switching on of backup pumps in the event of worker failure. The number of working and standby pumps is selected on the controller panel. Frequency converters, in addition to regulation, provide smooth starting of all electric motors, since they are connected directly to them, which avoids the use of additional soft starters, limits the starting currents of electric motors and increases the service life of pumps by reducing dynamic overloads of actuators when starting and stopping electric motors.
For water supply systems, this means no water hammer when starting and stopping additional pumps.
For each electric motor, the frequency converter allows you to implement:
1. speed control;
2. overload protection, braking;
3. monitoring of mechanical load.
Mechanical load monitoring.
This set of capabilities allows you to avoid the use of additional equipment.
Frequency control for one pump SPL® WRP-B(BL)
The base of the pumping unit of the SPL® WRP-BL configuration can only have two pumps, and control is implemented only according to the principle of the working-standby pump operating scheme, while the working pump is always involved in working with the frequency converter.
Frequency regulation is the most effective method regulation of pump performance. The cascade principle of pump control implemented in this case using frequency regulation has already firmly established itself as a standard in water supply systems, since it provides serious energy savings and increased system functionality.
The principle of frequency regulation for one pump is based on controlling the frequency converter controller, changing the rotation speed of one of the pumps, constantly comparing the task value with the reading of the pressure sensor. In case of insufficient performance of the operating pump, an additional pump will turn on based on a signal from the controller, and if an accident occurs, the backup pump will be activated.
The signal from the pressure sensor is compared with given pressure In the controller. The mismatch between these signals sets the rotation speed of the pump impeller. At the beginning of operation, the main pump is selected based on an estimate of the minimum operating time.
The main pump is the pump that is currently powered by the frequency converter. Additional and backup pumps are connected directly to the mains supply or through a soft starter. In this control system, the selection of the number of working/standby pumps is provided from the touch screen of the controller. The frequency converter is connected to the main pump and starts working.
The variable speed pump always starts first. Upon reaching a certain speed of rotation of the pump impeller, associated with an increase in water flow in the system, the next pump is switched on. And so on until the pressure in the system reaches the set value.
To equalize the service life of electric motors over time, a function has been implemented to change the sequence of connecting electric motors to the frequency converter. It is possible to custom change the switching time.
The frequency converter provides regulation and soft start only of the electric motor that is connected directly to it; the remaining electric motors are started directly from the network.
When using electric motors with a power of 15 kW or more, it is recommended to start additional electric motors through soft starters to reduce starting currents, limit water hammer and increase the overall service life of the pump.
Relay control SPL® WRP-C
The pumps operate based on a signal from a pressure switch set to a certain value. The pumps are switched on directly from the network and operate at full capacity.
The use of relay control in the control of pumping units ensures:
1. maintaining the specified system parameters;
2. cascade method of controlling a group of pumps;
3. mutual redundancy of electric motors;
4. Leveling the motor life of electric motors.
In pumping installations designed for two or more pumps, if the performance of the operating pumps is insufficient, an additional pump is switched on, which will also be activated in the event of an accident of one of the operating pumps.
The pump is stopped with a specified time delay based on a signal from the pressure switch that the set pressure value has been reached.
If during the next specified time the relay does not detect a drop in pressure, then the next pump stops and then in cascade until all pumps stop.
The control cabinet of the pumping unit receives signals from the dry-running protection relay, which is installed on the suction pipeline, or from a float from the storage tank.
Based on their signal, in the absence of water, the control system will turn off the pumps, protecting them from destruction due to dry running.
Provision is made for automatic switching on of backup pumps in the event of worker failure and the ability to select the number of working and backup pumps.
In pumping installations based on 3 pumps or more, it becomes possible to control from an analogue sensor 4-20 MA.
When operating pressure booster systems with a relay pressure maintenance principle:
1. pumps are turned on directly, which leads to water hammer;
2. energy savings are minimal;
3. regulation is discrete.
This is almost unnoticeable when using small pumps up to 4 kW. As the power of the pumps increases, pressure surges when turning on and off become more and more noticeable.
To reduce pressure surges, you can organize the inclusion of pumps with sequential opening of the damper or install an expansion tank.
The installation of soft starters can completely eliminate the problem.
The starting current with direct connection is 6-7 times higher than the rated current, while soft starting is gentle on the electric motor and mechanism. At the same time, the starting current is 2-3 times higher than the rated current, which can significantly reduce pump wear, avoid water hammer, and also reduce the load on the network during start-up.
Direct starting is the main factor leading to premature aging of insulation and overheating of the electric motor windings and, as a consequence, a reduction in its service life by several times. The actual service life of an electric motor largely depends not on the operating time, but on the total number of starts.
| Name of product | Brand, model | Specifications | Quantity | Cost without VAT, rub. | Cost including VAT, rub. | Wholesale cost. from 10 pcs. in rub. without VAT | Wholesale cost. from 10 pcs. in rub. VAT included |
|---|---|---|---|---|---|---|---|
| SHKTO-NA 1.1 | HxWxD 1000*800*300, Modicon TM221 controller unit 40 inputs/outputs, 24VDC power supply, built-in Ethernet port, Magelis STU 665 operator panel, Quint switching power supply - PS/IAC/24DC/10/, unit uninterruptible power supply Quint - UPS/24/24DC/10, modem NSG-1820MC, analog module TMZ D18, galvanic isolation, circuit breakers and relays for a power of 1.1 kW | 1 | 722 343,59 | 866 812,31 | 686 226,41 | 823 471,69 | |
| Cabinet of control and telecommunication equipment MEGATRON | SHKTO-NA 1.5 | HxWxD 1000*800*300, Modicon TM221 controller unit 40 inputs/outputs, 24VDC power supply, built-in Ethernet port, Magelis STU 665 operator panel, Quint switching power supply - PS/IAC/24DC/10/, Quint uninterruptible power supply - UPS/ 24/24DC/10, modem NSG-1820MC, analog module TMZ D18, galvanic isolation, circuit breakers and relays for a power of 1.5 kW | 1 | 722 343,59 | 866 812,31 | 686 226,41 | 823 471,69 |
| Cabinet of control and telecommunication equipment MEGATRON | SHKTO-NA 2.2 | HxWxD 1000*800*300, Modicon TM221 controller unit 40 inputs/outputs, 24VDC power supply, built-in Ethernet port, Magelis STU 665 operator panel, Quint switching power supply - PS/IAC/24DC/10/, Quint uninterruptible power supply - UPS/ 24/24DC/10, modem NSG-1820MC, analog module TMZ D18, galvanic isolation, circuit breakers and relays for a power of 2.2 kW | 1 | 735 822,92 | 882 987,51 | 699 031,77 | 838 838,12 |
| Cabinet of control and telecommunication equipment MEGATRON. | SHKTO-NA 3.0 | HxWxD 1000*800*300, Modicon TM221 controller unit 40 inputs/outputs, 24VDC power supply, built-in Ethernet port, Magelis STU 665 operator panel, Quint switching power supply - PS/IAC/24DC/10/, Quint uninterruptible power supply - UPS/ 24/24DC/10, modem NSG-1820MC, analog module TMZ D18, galvanic isolation, circuit breakers and relays for a power of 3.0 kW | 1 | 747 738,30 | 897 285,96 | 710 351,38 | 852 421,66 |
| Cabinet of control and telecommunication equipment MEGATRON | SHKTO-NA 4.0 | HxWxD 1000*800*300, Modicon TM221 controller unit 40 inputs/outputs, 24VDC power supply, built-in Ethernet port, Magelis STU 665 operator panel, Quint switching power supply - PS/IAC/24DC/10/, Quint uninterruptible power supply - UPS/ 24/24DC/10, modem NSG-1820MC, analog module TMZ D18, galvanic isolation, circuit breakers and relays for a power of 4.0 kW | 1 | 758 806,72 | 910 568,06 | 720 866,38 | 865 039,66 |
| Cabinet of control and telecommunication equipment MEGATRON | SHKTO-NA 7.5 | HxWxD 1000*800*300, Modicon TM221 controller unit 40 inputs/outputs, 24VDC power supply, built-in Ethernet port, Magelis STU 665 operator panel, Quint switching power supply - PS/IAC/24DC/10/, Quint uninterruptible power supply - UPS/ 24/24DC/10, modem NSG-1820MC, analog module TMZ D18, galvanic isolation, circuit breakers and relays for a power of 7.5 kW | 1 | 773 840,78 | 928 608,94 | 735 148,74 | 882 178,48 |
| Cabinet of control and telecommunication equipment MEGATRON | SHKTO-NA 15 | HxWxD 1000*800*300, Modicon TM221 controller unit 40 inputs/outputs, 24VDC power supply, built-in Ethernet port, Magelis STU 665 operator panel, Quint switching power supply - PS/IAC/24DC/10/, Quint uninterruptible power supply - UPS/ 24/24DC/10, modem NSG-1820MC, analog module TMZ D18, galvanic isolation, circuit breakers and relays for a power of 15 kW | 1 | 812 550,47 | 975 060,57 | 771 922,94 | 926 307,53 |
| Cabinet of control and telecommunication equipment MEGATRON | ShPch | HxWxD 500x400x210 with mounting plate, frequency converter ACS310-03X 34A1-4, circuit breaker | 1 | 40 267,10 | 48 320,52 | 38 294,01 | 45 952,81 |
| № | Name of product | Brand, model | Specifications | Retail price in rub. without VAT | Wholesale price from 10 pcs. in rub. without VAT | Wholesale price from 10 pcs. in rub. VAT included |
|---|---|---|---|---|---|---|
| 1 | SPL WRP-S 2 CR10-3 X-F-A-E | 714 895,78 | 681 295,67 | 817 554,81 | ||
| Rated flow 10 m3, rated head 23.1 m power 1.1 kW. The station is equipped with an automatic pressure support system with the ability to provide remote control and control of pump operation, pressure sensors, dry running sensor, intake and pressure manifolds, check valves, shut-off valves. | ||||||
| 2 | Pressure boosting pump station based on grundfos pumps | SPL WRP-S 2 CR15-3 X-F-A-E | 968 546,77 | 923 025,07 | 1 107 630,08 | |
| Rated flow 17 m3, rated head 33.2 m power 3 kW. The station is equipped with an automatic pressure support system with the ability to provide remote monitoring and control of pump operation, pressure sensors, dry running sensor, intake and pressure manifolds, check valves, shut-off valves. | ||||||
| 3 | Pressure boosting pump station based on grundfos pumps | SPL WRP-S 2 CR20-3 X-F-A-E | 1 049 115,42 | 999 806,99 | 1 199 768,39 | |
| rated flow 21 m.cub.h., rated head 34.6 m power 4 kW. The station is equipped with an automatic pressure support system with the ability to provide remote monitoring and control of pump operation, pressure sensors, dry running sensor, intake and pressure manifolds, check valves, shut-off valves. | ||||||
| 4 | Pressure boosting pump station based on grundfos pumps | SPL WRP-S 2 CR5-9 X-F-A-E | 683 021,93 | 650 919,89 | 781 103,87 | |
| nominal flow 5.8 m.cub.h., nominal head 42.2 m power 1.5 kW the station is equipped with an automatic pressure support system with the ability to provide remote monitoring and control of pump operation, pressure sensors, dry running sensor, receiving and pressure manifolds, check valves, shut-off valves. | ||||||
| 5 | Pressure boosting pump station based on grundfos pumps | SPL WRP-S 2 CR45-4-2 X-F-A-E | 2 149 253,63 | 2 048 238,70 | 2 457 886,45 | |
| rated flow 45 m.cub.h., rated head 72.1 m power 15 kW the station is equipped with an automatic pressure support system with the ability to provide remote monitoring and control of pump operation, pressure sensors, dry running sensor, intake and pressure manifolds, check valves, shut-off valves shutters. | ||||||
| 6 | Pressure boosting pump station based on grundfos pumps | SPL WRP-S 2 CR45-1-1 X-F-A-E | 1 424 391,82 | 1 357 445,40 | 1 628 934,48 | |
| nominal flow 45 m.cub.h., nominal head 15 m power 3 kW the station is equipped with an automatic pressure support system with the ability to provide remote monitoring and control of pump operation, pressure sensors, dry running sensor, intake and pressure manifolds, check valves, shut-off valves. | ||||||
| 7 | Pressure boosting pump station based on grundfos pumps | SPL WRP-S 2 CR5-13 X-F-A-E | 863 574,18 | 822 986,19 | 987 583,43 | |
| rated flow 5.8 m3/h, rated head 66.1 m power 2.2 kW. The station is equipped with an automatic pressure support system with the ability to provide remote monitoring and control of pump operation, pressure sensors, dry running sensor, intake and pressure manifolds, check valves, shut-off valves. | ||||||
| 8 | Pressure boosting pump station based on grundfos pumps | SPL WRP-S 2 CR64-3-2 X-F-A-E | 2 125 589,28 | 2 025 686,58 | 2 430 823,90 | |
| rated flow 64 m3, rated head 52.8 m power 15 kW. The station is equipped with an automatic pressure support system with the ability to provide remote monitoring and control of pump operation, pressure sensors, dry running sensor, intake and pressure manifolds, check valves, shut-off valves. | ||||||
| 9 | Pressure boosting pump station based on grundfos pumps | SPL WRP-S 2 CR150-1 X-F-A-E | 2 339 265,52 | 2 226 980,77 | 2 672 376,93 | |
| Rated flow 150 m3, rated head 18.8 m power 15 kW. The station is equipped with an automatic pressure support system with the ability to provide remote monitoring and control of pump operation, pressure sensors, dry running sensor, intake and pressure manifolds, check valves, shut-off valves. | ||||||
June 1, 2007
The ADL company has been the exclusive distributor of products from a well-known European manufacturer - the Flamco concern (Netherlands) for more than 5 years. In previous issues of the ABOK magazine (ABOK, No. 2, 2005), we have already talked about the advantages, selection and operation of expansion tanks, safety valves, separators and air vents manufactured by Flamco. This equipment has been installed and is successfully operated at tens of thousands of objects throughout Russia, among which the following are especially noteworthy: the Tretyakov Gallery, the Old Square building complex, the Bolshoi Theater, the Accounts Chamber, the building of the Ministry of Foreign Affairs, MAMT (theater named after K. S. Stanislavsky), housing complexes of the DON-Stroy company. In this article we will dwell in more detail on Flamcomat automatic pressure maintenance units.
It's no secret that for big circulation systems The disadvantage of membrane expansion tanks is their dimensions. The fact is that, on average, the tank is filled with coolant by only 30–60%, with smaller values accounting for tanks of large volumes. In practice, this means the following: at facilities where the estimated volume of tanks is several thousand liters, a serious problem arises with their placement in the operating room, therefore, for such facilities, Flamcomat automatic pressure maintenance units are most often used. And if there is still a question about effective removal gases from the system, then in such cases it is no longer possible to do without installations.
A pressure maintenance unit is basically a combination of a free-flow expansion vessel and a pump-based pressure control unit. As the system temperature increases, the solenoid valve opens, which transfers excess coolant from the system to the tank, and when the temperature drops, the coolant from the tank is pumped back into the system. In this way, the installations can maintain the system pressure within fairly narrow, predetermined limits. In addition, a non-pressure tank can be almost completely filled with coolant, which makes pressure maintenance units several times more compact than conventional expansion tanks.
The units can be equipped with basic expansion tank volume from 150 to 10,000 l, while maintaining operating pressure in the system up to 145 m. It is worth noting that, if necessary, when there are size restrictions, the installation can be supplemented with a second tank, dividing the total design volume in half. The maximum operating temperature acting on the membrane is no more than 70°C.
The Flamcomat installation combines 3 main functions: maintaining pressure in a narrow range (control hysteresis +/- 0.1 bar), deaerating the coolant, make-up.
Flamcomat pressure maintenance units successfully “fight” the problem of coolant airing, which is well known to any specialist. Flamcomat pressure maintenance units are based on the principle of microbubble deaeration (throttling): when the coolant under high system pressure enters the expansion tank of the unit (without pressure), the ability of gases to dissolve in water decreases and excess air is removed. In order to remove as much air as possible from the coolant, and therefore from the system, an increased number of cycles, as well as an increased cycle time, are pre-entered into the installation program at the manufacturer. After 2440 hours, this turbo deaeration mode switches to normal deaeration mode. At the entrance to the expansion tank there is a special compartment with PALL rings (international patent No. 0391484), which very effectively remove air from the coolant. Thanks to this, the deaeration capacity of the Flamcomat pressure maintenance system increases by 2-3 times compared to conventional installations, this is especially important at the time of the first start-up of the system. Do not forget about the economic side of the issue; the effective deaeration capacity of the installation allows you to abandon the use of expensive deaeration air separators or labor-intensive manual deaeration.
The Flamcomat unit comes standard with automatic make-up, which compensates for losses due to leaks and deaeration. The level control system automatically activates the make-up function when required, and the volume of coolant enters the tank in accordance with the program. When the minimum level in the tank is reached (typically 6%), the solenoid valve in the make-up line opens and the tank is filled to the required level (typically 12%), preventing the pump from running dry. The pressure maintenance unit also includes a flow meter installed in the make-up line to determine the amount of leakage in the system.
In the recent past, the following question was relevant: what pressure maintenance units can be used for high-rise buildings up to 240 m?! Flamco has released the lineup Flexcon MPR-S (Russia Special) installations, which took into account the wishes of Russian urban planners, in particular the well-known company DON-Stroy LLC. Currently, the above-mentioned pressure maintenance installations are successfully operated in high-rise buildings, for example, the most high building in Russia and in Europe - TRIUMPH PALACE, Chapaevsky lane. ow. 3, building height = 264 m, Sokol metro station.
MPR-S units are equipped with an expansion tank with a volume of 200 to 5,000 liters, while maintaining a pressure of up to 240 m.
All models of installations can include either 1 or 2 pumps. In installations with 2 pumps, in the installation program you can optionally select their operating mode: main/standby, alternate operation of pumps, parallel operation of pumps.
In conclusion, it is worth noting that Flamco today is a leading manufacturer of such equipment that meets all the latest requirements engineering systems, namely: impeccable quality, efficiency, ease of use and ease of maintenance.
More detailed information You can obtain information about automatic installations and other Flamco equipment from the engineers of the department of pipeline fittings for general industrial use of the ADL Company. We also draw your attention to the specialized catalog “ Automatic installations pressure maintenance”, where you will find all the necessary technical information on this product.
(PDF, 301.32 Kb) PDF
Pressure boosting units are pumping stations, which include from 2 to 4 multi-stage vertical pumps Boosta.
Boosta pumps are mounted on a common frame and connected to each other by suction and pressure pipes. The pumps are connected to the collectors using shut-off valves and check valves.
The control cabinet is mounted on a stand mounted on the frame.
Pressure booster installations have various control methods:
- AUPD...Boosta...PD with several frequency converters.
Pressure boosting units with 2÷4 Boosta pumps, each pump connected to a separate frequency converter. All pumps operate with adjustable speed, at the same speed. - AUPD...Boosta...KCHR with cascade-frequency control.
Pressure booster systems with 2÷4 Boosta pumps, only one pump is equipped with a frequency converter. The remaining pumps are switched on depending on the system requirements and operate at constant speed.
Maintaining constant pressure is ensured by regulating the rotation speed of the pump to which the frequency converter is connected.
