GEN III Smart Proportioner – distant testing system

Regular testing and upkeep guarantee a most service life and practical and failure-related security of technical home equipment. The identical applies to foam-based hearth extinguishing systems and the foam proportioners installed in them.
Up to now, such testing and maintenance have required the presence of personnel on-site. However, it might be easier and more cost-efficient for extinguishing system operators if this was possible in a totally automated and remote-controlled method. For instance, this may additionally make regular maintenance personnel travel to remotely situated proportioners redundant. In addition, this is in a position to be positive that necessities by the manufacturer, standards and units of laws are noticed without any functional deviations and unsuitable time intervals.
The distant testing system inside the ‘Smart Proportioner’ growth framework has been created only for this function. It is an development of the remote monitoring system.
Brief overview of the distant monitoring system
The remote monitoring system is used for proportioner monitoring in testing mode throughout maintenance and live firefighting operations.
In the course of distant monitoring, the proportioning rate and different operating parameters are determined, recorded and forwarded to the system operator if needed. Thus, the smooth functionality and operational readiness of the system are monitored and ensured this way.
A distant monitoring system consists of a management system, including an optional native display unit (HMI) if relevant, and sensor technology. The sensor know-how contains, as a minimum, the likelihood to determine the water motor’s number of revolutions and to discover out the foam agent flow price. These values are used to calculate the proportioning fee. This determine is the core characteristic in the course of the operation and testing of a foam proportioner. differential pressure gauge ราคา is on the market on an optional foundation.
The remote monitoring system supports the operating and service personnel on-site. It is also suitable for remote monitoring of the froth proportioner.
However, it is a primary proven fact that personnel are at all times necessary to hold out the maintenance work or the proportioning price testing on-site as the system performs a monitoring position only. It does not actively interact with the functioning of the proportioner.
In the course of distant monitoring, the proportioning fee and other operating parameters are decided, displayed and forwarded. Images provided by Author / Contributor
Evolution – from distant monitoring to distant testing
The question is how to further minimize the upkeep effort on foam proportioners.
The answer lies in the distant testing system, the subsequent step of the clever FireDos proportioners. The distant testing system permits monitoring of the proportioner and individual upkeep, including proportioning rate testing.
The situation of the proportioner could be checked with out having to begin up the hearth extinguishing system. No personnel are required on-site. Proportioners in a remote place or which may be only rarely inspected by personnel on-site could be checked without upkeep staff and associated bills, such as journey expenditure. In particular, rising the testing interval is possible without additional efforts. The instruction handbook for FireDos proportioners requires regular starting-up, utilizing the service crank manually at the least. This is meant to prevent deposits contained in the tools, impairing its ease of movement and thus conserving the proportioner’s performance. The distant testing system can undertake these common movements and test the proportioning rate, rising the service life and functional security of the proportioner.
What is the design of a distant testing system?
The distant testing system is mostly primarily based upon the remote monitoring system. It is, however, notably prolonged by the use of actuators. This is as a outcome of they allow the fully independent operation of the remote testing system; i.e., the proportioning price of the proportioner is tested without activating the water pumps of the hearth extinguishing system.
The core components embody a central management system, with an optional HMI, sensor technology, electrical ball valve drives, an electrical drive for the proportioner and a bypass line previous the water motor.
The connection of the electrical drive and the proportioner is designed in order that the electrical drive may have no interference with the proportioner’s performance in the case of a hearth. This method, some nice benefits of the mechanical proportioning precept are preserved.
How does the remote testing system work, and the way can the proportioning rate be checked without activating the water pumps?
If in ready-to-operate mode, the proportioner is at all times within the proportioning place. Upon initiation of an automated testing process, no matter if after an outlined time interval, upon request via a cloud solution or from the hearth extinguishing system/a native operator, the proportioner is put into testing operation. Specifically, the control system places the proportioner into testing operation utilizing an electrically actuated ball valve drive whereas the foam agent isn’t mixed into the extinguishing water but returned to the foam agent tank. At the identical time, it opens the electrically actuated ball valve in the bypass line previous the water motor. Next, the electric drive of the proportioner is activated, driving the whole proportioner at its start-up move fee. The start-up move rate is the bottom operating level of a proportioner to achieve its nominal proportioning rate.
Due to the external electrical drive, the water motor works like a pump and generates a water flow by way of the bypass from the water motor’s outlet to the water motor’s inlet. The operation causes no change of pressure in the extinguishing water line. เกจวัดแรงกด extinguishing system is subsequently not influenced when the proportioner is examined.
As the extinguishing water circulate price simulated by the exterior drive can be identified as a result of known ratio of the water motor’s variety of revolutions and the water circulate fee, simply the froth agent circulate rate have to be decided to allow the subsequent calculation of the proportioning rate. This is done by a volumetric move meter between the proportioning pump’s outlet and the ball valve, which switches between returning and proportioning mode. This permits dedication of the froth agent move price, each in testing mode and whereas proportioning in case of an alarm.
The proportioning rate is decided according to the formula as required in the requirements and laws EN 13565-1, NFPA eleven, FM 4-12, and the Nordtest NT Fire 042 methodology.
Foam agent flow fee [l/min]
(Extinguishing water flow rate x 100 = proportioning rate %+ foam agent move rate) [l/min]
After completion of the testing course of, the electrical drive of the proportioner stops, the bypass line is closed, and the proportioner is returned to proportioning mode.
Sensor technology installed as a further choice or inside the electric drive allows acquiring further data and conclusions about the state and condition of the respective unit. It is checked, for instance, whether or not the ball valves are of their right positions or adequate oil is in the crankshaft housing of the proportioning pump. In addition, the pressure values on the pump inlet/outlet and the strain on the water motor are recorded. Finally, measuring the entire system’s torque and the flow rate contained in the bypass line permits checking the final condition of the proportioner.
The knowledge may be displayed domestically or via a cloud answer. Controlling the upkeep operation can additionally be potential by way of both interfaces.
What if there’s an alarm throughout a testing process?
An important question is: Does the proportioner work without any limitations and as usual if there may be an alarm? The reply is: Yes!
The remote testing system is designed in such a method that extinguishing water can move by way of the water motor and begin it up at any time, even if the electrical drive is working on the similar time. In addition, a unique, totally automatic and purely mechanical decoupling mechanism ensures that the electrical drive doesn’t interfere with the proportioner’s functioning and readiness to operate.
In case of an alarm, the ball valves in the bypass line and people for switching between returning and proportioning are instantly switched so that the proportioner is in proportioning mode for firefighting. Thus, the control system is put into alarm mode in this case. This alarm mode causes the disabling of all functions not essential at that second and all ball valves to be set to their right position.
Therefore, in case of an alarm throughout testing operation, the ball valves change to their appropriate place absolutely automatically and the electric drive is switched off. Even if the electric drive is still operating or coming to a stop, the extinguishing water can flow by way of the water motor and drive the proportioning pump without limitations. The alarm mode of the control system prevents re-activation of the electric drive or any unintended ball valve switching.
What advantages does a remote testing system provide?
Compared with standard proportioners and people outfitted with a remote monitoring system, a distant testing system supplies numerous benefits. They function the next:
ν Proportione
Display view for testing operation of the FireDos distant testing system. Images provided by Author / Contributor
cian need to be on-site.
Regular proportioning price testing: Regular proportioning rate testing ensures optimum functioning of the proportioner in case of a hearth. If the proportioning fee is simply too low, the extinguishing success could be compromised. Overdosing causes the foam agent to be consumed faster than meant, resulting in the untimely ending of the froth operation.
Increasing practical and failure safety as a end result of elevated testing intervals: An increased take a look at interval causes the proportioner to be examined totally mechanically at shorter intervals of time. This notably reduces the risk of a failure remaining undetected for an extended time period. In addition, extra frequent testing prevents the formation of deposits contained in the water motor.
Early fault detection and diagnostics: Faults in the proportioner or elements of the extinguishing system, instantly affecting the proportioner’s performance, can be identified at an early stage of time. This contains, for instance, strain variations within the extinguishing water line or a jammed suction line.
Inclusion of all features and advantages of the distant monitoring system: All features and advantages of the distant monitoring system are also present in the remote testing system, i.e. all related working parameters are recorded and processed constantly and accurately as well as documented in a log file. In addition, all data are displayed by a visualization.
Reduction of prices: Regular functional testing makes it attainable to detect faults even earlier. This way, maintenance and repairs can happen before any extra severe harm happens. The increased functionality and fault security of the proportioner ensures that the service life of the proportioners is maximized and the probability of a failure is minimized. As a end result, decreased service and working workforce on-site cut back prices significantly, particularly if the proportioner is positioned in a distant place. In addition, functional testing of the proportioner allows early identification, analysis and possibly limiting a fault remotely. This makes service visits extra efficient and therefore more cost-effective.
Summary and prospect
The remote monitoring system already offers varied advantages and helps cut back prices, nevertheless it can not reduce the workforce required on-site.
The remote testing system is a solution for reducing maintenance necessities. It is the following evolution in the course of developing clever FireDos proportioners.
The remote testing system permits reducing the workforce required on-site to a minimum, together with shorter testing intervals and increased failure security. This will increase the proportioner’s service life.
If the proportioner is in a fault-free state, no additional maintenance by personnel on-site is important, aside from an oil change. The oil change can be carried out by the operator’s personnel, too, easily and with none deeper information of the operating principle of proportioners. If a service go to or repair should nonetheless become needed, distant monitoring and early fault detection will make the planning and completion of such work more efficient.
Like the distant monitoring system, the distant testing system is an optimum symbiosis of mechanical proportioners and an intelligent electronic upgrade. Thus, the benefits from each know-how fields are mixed without compromising the functionality of mechanical FireDos proportioners.
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