EP3697506B1 - Verfahren zum betrieb eines feuerschutzwasserverteilungssystems - Google Patents

Verfahren zum betrieb eines feuerschutzwasserverteilungssystems Download PDF

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Publication number
EP3697506B1
EP3697506B1 EP17791720.0A EP17791720A EP3697506B1 EP 3697506 B1 EP3697506 B1 EP 3697506B1 EP 17791720 A EP17791720 A EP 17791720A EP 3697506 B1 EP3697506 B1 EP 3697506B1
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EP
European Patent Office
Prior art keywords
fpwd
time
air
accordance
logging
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Application number
EP17791720.0A
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English (en)
French (fr)
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EP3697506A1 (de
Inventor
Seppo Ensio KOSKELA
Klaus Johan GENTZ
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Marioff Corp Oy
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Marioff Corp Oy
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/60—Pipe-line systems wet, i.e. containing extinguishing material even when not in use
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/68—Details, e.g. of pipes or valve systems

Definitions

  • the following description relates to fire protection systems and, more specifically, to a fire protection water distribution system and a performance analyzer for a fire protection water distribution system.
  • a typical fire protection water distribution system for a structure e.g., a building, a ship, a tunnel, etc.
  • a structure e.g., a building, a ship, a tunnel, etc.
  • the amount of air also has a known effect on system behavior by introducing a delay for detecting pressure changes.
  • the delays especially those within large systems, lead to increases in the time required to trigger automatic activation of protection systems. In some cases, these increases go beyond approved limits.
  • US 2012/230846 A1 discloses systems, and methods disclosed herein relate to controlling operation of a jockey pump of a fire pump system.
  • US 5 680 329 A discloses A verification system which will help ensure compliance with water-based fire protection system testing and maintenance standards and codes.
  • WO 2011/034493 A1 discloses a measuring equipment in order to, within a system distributing liquid and having an accumulator tank and by means of a control unit and a calculation unit assigned to the same, allow to determine an instantaneous relationship between an enclosed gas volume and an enclosed liquid volume put under a positive pressure.
  • a method of operating a fire protection water distribution (FPWD) system as recited in claim 1 includes logging an initial value of a fluid pressure of the FPWD system, running a motor to drive a pumping of water through the FPWD system until a predefined end value of the fluid pressure is reached, determining a length of time the motor is run, logging a new value of the fluid pressure following a predefined wait time and calculating an amount of air in the FPWD system based on at least the initial and new values of the fluid pressure and the determined length of time.
  • FPWD fire protection water distribution
  • the FPWD is in a stand-by state prior to the logging of the initial value.
  • the FPWD system component includes a pump configured for the pumping of the water and the motor is configured to drive operations of the pump.
  • the running of the motor includes checking a rate of increase of the fluid pressure.
  • the calculating of the amount of air in the FPWD system is based on the initial and new values of the condition, the determined length of time and a capacity and operational parameter of the FPWD system component.
  • the method further includes logging the calculated amount of air.
  • the method further includes determining whether an alarm is required in accordance with the calculated amount of air, triggering the alarm in accordance with results of the determining and stabilizing the FPWD system.
  • an amount of air in a fire protection water distribution system (FPWD) of a structure for example, reduces a sensitivity of the system to small leakages which are a natural part of its or any piping system and can lead to a relatively large amount of water escaping from the system before certain components (e.g., a stand-by or jockey pump) can be started.
  • the reduced sensitivity results from the spring-effect associated with an expansion of the air during periods in which the internal system pressure declines.
  • the expanding air may, in some cases, lead to a prolonged stand-by pumping period that exceeds maximum allowable time periods.
  • Time period 1 is representative of a natural pressure variation in a given FPWD
  • time 2 is a moment at which the FPWD detects a declined pressure and the stand-by pump activates to elevate pressure
  • time 3 is a default time (e.g., 10 seconds) by which the FPWD should reach the stand-by pressure.
  • the time period between times 2 and 3 may be extended, in some cases excessively, by excessive air in the FPWD. That is, excessive air in the FPWD results in the default time being insufficient for the stand-by pump to elevate pressures in the FPWD to the stand-by pressure and may result in unintended activations of various components of the FPWD.
  • the excessive air in the FPWD thus should be removed by de-airing or an extending stand-by pumping time if permitted.
  • Time period 1 is representative of a moment when a sprinkler activates to cause a rapid pressure decline in the FPWD
  • time 2 is a moment at which the FPWD detects a declined pressure and the stand-by pump activates to elevate pressure
  • time 3 is a default time (e.g., 10 seconds) by which the FPWD activates
  • time 4 is a moment at which a required working pressure is reached at the sprinkler.
  • the time periods between times 1 and 2, 2 and 3 and 3 and 4 may all be extended, in some cases excessively, by excessive air in the FPWD.
  • excessive air in the FPWD can prolong a time for the declining pressure to reach the triggering level to start stand-by pumping during the time period between times 1 and 2.
  • the excessive air in the FPWD can also increase the time required for stand-by pumping between times 2 and 3 as well as the time needed for air compression between times 3 and 4.
  • the excessive air can increase a total activation time of the FPWD and may cause a delay in the FPWD reaching the full working pressure in the required time.
  • an electrical pump unit (EPU) in an FPWD can be utilized to conduct an air amount analysis automatically or on demand.
  • the analysis will be conducted by raising system pressure from one level to another by a motor and a pump that are run at predefined speeds with a frequency converter.
  • a relative air amount in the FPWD can then be calculated using added water amount and pressure change information.
  • the EPU or another similar component in or external to the FPWD may have logic installed therein to execute a suitable algorithm for the associated calculations and results may be displayed on a user panel and/or logged into unit memory (it is to be understood that the logic need not be installed in the EPU or the FPWD and may be installed in a remote device and is described herein as being installed in the EPU or the FPWD for illustrative purposes only).
  • the EPU may generate an alarm whenever there is a need to de-air the piping in the FPWD in order to maintain accepted system performance levels or to adjust system settings.
  • the on-demand analysis may show measured values and recommended amounts of air or system settings for certain conditions.
  • the method includes logging an initial value of a condition of the FPWD system (block 301) and starting to run an FPWD system component to drive a pumping of fluid through the FPWD system while logging a start time of the FPWD system component (block 302).
  • the condition of the FPWD system may be a fluid pressure within the FPWD system
  • the FPWD system component may be a fluid driving element, such as a pump configured for fluid pumping with a driving motor coupled thereto
  • the fluid may be water or water mixed with one or more water treatment additives or chemicals.
  • the method further includes running the FPWD system component until a predefined end value of the condition is reached (block 303), stopping the FPWD system component at that point and logging the end time at which the FPWD system component is stopped (block 304).
  • the method further includes waiting for a predefined wait time, such as 60 seconds or enough time to allow the FPWD system sufficient time to settle (block 305), and logging a new value of the condition following the predefined wait time (block 306).
  • the method continues by calculating an amount of air in the FPWD system (block 307), logging the calculated amount of air (block 308) and resetting the FPWD system and ending the test processing (block 309).
  • the calculation may be based on at least the initial and new values of the condition and the start and end times as well as a capacity and an operational parameter of the FPWD system component (i.e., how much water the pump can pump at any given time at a given operational pumping speed).
  • the logged amount of air can be used to control various components of the FPWD system, such as one or more high pressure driving elements for driving or pumping fluid into and through the FPWD system, or for scheduling repair or maintenance of the FPWD system in an event the amount of air is determined to be excessive.
  • the logging of the start and end times may be alternatively or effectively conducted by determining a duration or length of time during which the FPWD system component is run or operated.
  • the calculation may be based on at least the initial and new values of the condition and the determined duration or length of time as well as a capacity and an operational parameter of the FPWD system component.
  • the method includes determining whether the FPWD system is in a stand-by state (block 401), logging an initial value of a condition of the FPWD system if the FPWD system is not in a stand-by state (block 402) and waiting for a predefined time, such as 60 seconds (block 403), and repeating the determining of block 401 if the FPWD system is in the stand-by state.
  • the method may include starting to run an FPWD system component to drive a pumping of fluid through the FPWD system while logging a start time of the FPWD system component (block 404), determining whether the FPWD system component start was properly executed (block 405) and returning to the waiting of block 403 if the starting of the FPWD system component was improper.
  • the condition of the FPWD system may be a fluid pressure within the FPWD system
  • the FPWD system component may be a fluid driving element, such as a pump configured for fluid pumping with a driving motor coupled thereto
  • the fluid may be water.
  • the method further includes iteratively running the FPWD system component (block 4041) until a predefined end value of the condition is reached (block 406), stopping the FPWD system component at that point (block 407) and logging the end time at which the FPWD system component is stopped (block 408).
  • the method further includes waiting for a predefined wait time, such as 60 seconds or enough time to allow the FPWD system sufficient time to settle (block 409) and logging a new value of the condition following the predefined wait time (block 410).
  • the iterative running of the FPWD system component until the predefined end value of the condition is reached may include a checking of a rate of increase of fluid pressure and a determining if a sprinkler is activated in accordance with a result of the checking.
  • the method continues by calculating an amount of air in the FPWD system (block 411), logging the calculated amount of air into a panel and a memory unit of the FPWD system (block 412) and resetting the FPWD system and ending the test processing (block 413).
  • the calculation may be based on at least the initial and new values of the condition and the start and end times as well as a capacity and an operational parameter of the FPWD system component (i.e., how much water the pump can pump at any given time at a given operational pumping speed).
  • the logged amount of air can be used to control various components of the FPWD system, such as one or more high pressure driving elements for driving or pumping fluid into and through the FPWD system, or for scheduling repair or maintenance of the FPWD system in an event the amount of air is determined to be excessive.
  • the logging of the start and end times may be alternatively or effectively conducted by determining a duration or length of time during which the FPWD system component is run or operated.
  • the calculation may be based on at least the initial and new values of the condition and the determined duration or length of time as well as a capacity and an operational parameter of the FPWD system component.
  • the method may also include determining whether an alarm is needed following the logging of the amount of air (block 414), triggering the alarm (block 415) and stabilizing the FPWD system before the resetting and ending in an event that no alarm is needed or in an event the alarm has been triggered in block (block 416).
  • an FPWD system 501 is provided for executing the methods described herein (e.g., the methods and algorithms illustrated in FIGS. 3 and 4 and the accompanying text) and for managing fire protection and water distribution for a structure (e.g., a building, a ship, a tunnel, etc.) in which the FPWD system 501 is deployed.
  • the FPWD system 501 may include a fluid or water supply (hereinafter referred to as a "water supply”) 502, a water distribution system 503, piping 504, a driving element 505 and a sensing element 506.
  • the water distribution system 503 is receptive of water from the water supply 502 by way of certain components of the piping 504 and the water is distributed throughout the water distribution system 503 by way of additional components of the piping 504.
  • the driving element 505 may include a pump 5051, which is fluidly interposed along the piping 504 between the water supply 502 and the water distribution system 503 and thereby configured to pump the water from the water supply 502 into and throughout the water distribution system 503, and a motor 5052.
  • the motor 5052 is mechanically connected with the pump 5051 via connection C and is configured to control operations of the pump 5051 in accordance with electrical power P1 received thereby.
  • the sensing element 506 may be provided as one or more sensors of various types including, but not limited to, fluid pressure sensors that are fluidly connected to and distributed throughout the water distribution system 503 and the piping 504 via fluid connections F to sense a condition of the FPWD system 501.
  • the condition of the FPWD system 501 sensed by the sensing element 506 may be a fluid pressure within the FPWD system 501 and the water distribution system 503.
  • the sensing element 506 may be further configured to generate and issue a first electrical signal S1 in accordance with readings of the condition as an indication thereof.
  • the sensing element 506 may also be configured to generate and display a graphical readout or indication of the readings.
  • the FPWD system 501 further includes a controller 510.
  • the controller 510 includes at least one of first and second components 511 and 513, a user interface or panel (hereinafter referred to as a "panel") 514, a control component 515 and a housing 516.
  • the housing 516 is configured to house each component of the controller 510 with at least an input portion and a display portion of the panel 514 accessible to a user or operator.
  • the first and second components 511 and 513 are independently receptive of electrical power P2 and P3 from an electrical power supply and are configured to direct the electrical power P1 to the driving element 505 to start a driving of fluid from the water supply 502 to the water distribution system 503 by the driving element 505 and to end such power supply to stop the driving element 505.
  • the panel 514 is configured to display the indication in accordance with the first electrical signal S1 and to operate the first component 511 by way of second electrical signal S2 and to output a third electrical signal S3 in accordance with a command OC received by the panel 514 from the user or operator.
  • the control component 515 may be provided as a processing unit that includes a processor, a memory unit and a networking unit by which the control component is communicative with other components of the FPWD system 501.
  • the memory unit has executable instructions stored thereon, which are executable by the processor and which, when executed by the processor, are configured to cause the processor to operate as described herein.
  • the control component 515 is thus configured to output the first electrical signal S1 to the panel 514 along or by way of third electrical signal S3 and to operate the second component 513 by way of fourth electrical signal S4 in accordance with the first electrical signal S1 and at least one of the second electrical signal S2 and an automatic trigger T received thereby (i.e., on-demand testing does not require that the control component 515 be receptive of the automatic trigger T).
  • the first component 511 may include or be provided as at least one of a contactor and a soft starter and the second component may include or be provided as at least one of a variable frequency drive (VFD), a contactor and a soft starter.
  • VFD variable frequency drive
  • the second component 513 may be receptive of a speed reference of the driving element 505 and may be able to control the driving element 505 to generate a flow of water relative to running speed (e.g., 10 liters per minute pump at nominal provides 5 liters per minute at 50% nominal).
  • the controller 510 since the panel 514 and the control component 515 operate the first and second components 511 and 513 in accordance with a command OC, input or instructions received from a user or operator or in accordance with the automatic trigger T, the controller 510 as a whole may operate manually/selectively for on-demand analysis or automatically.
  • the driving element 505 may be provided as a low and/or high pressure driving element 505.
  • the FPWD system 501 may further include at least one or more (e.g., 2-9) additional low and/or high pressure driving elements 530.
  • additional low and/or high pressure driving elements 530 may be generally configured similarly as the low and/or high pressure driving element 505 and may be fluidly interposed between the water supply 502 and the water distribution system 503.
  • the controller 510 may be configured to control an operation of the at least one or more additional low and/or high pressure driving elements 530 in accordance with at least a performance of the low and/or high pressure driving element 505 and operations of the FPWD system 501 during executions of the methods of FIGS. 3 and 4 . That is, the controller 510 may operate the additional low and/or high pressure driving elements 530 based at least in part on the determination of how much air is in the piping 504 of the water distribution system 503.
  • the above-described automatic analysis can provide evidence of system performance to an approval body during a lifetime of the system. Continuous monitoring and alarms can guide operators toward doing preventative maintenance to keep system performance at acceptable levels.
  • the above-described on-demand analysis can improve and speed up de-airing processes of the system especially to an extent that each branch of the system can be separately analyzed and de-aired to acceptable levels.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Claims (7)

  1. Verfahren zum Betreiben eines Feuerschutzwasserverteilungs(fire protection water distribution, FPWD)-Systems (501), wobei das Verfahren Folgendes umfasst:
    Protokollieren eines Anfangswerts eines Fluiddrucks des FPWD-Systems (501);
    Laufenlassen eines Motors (5052), um das Pumpen von Wasser durch das FPWD-System (501) anzutreiben, bis ein vordefinierter Endwert des Fluiddrucks erreicht wird;
    Bestimmen einer Zeitspanne, in der der Motor (5052) läuft;
    Protokollieren eines neuen Werts des Fluiddrucks nach einer vordefinierten Wartezeit; und
    Berechnen einer Luftmenge in dem FPWD-System (501) basierend auf mindestens des Anfangs- und des neuen Wert des Fluiddrucks und der bestimmten Zeitspanne.
  2. Verfahren nach Anspruch 1, ferner umfassend Bestimmen, ob sich die FPWD in einem Standby-Zustand befindet, vor dem Protokollieren des Anfangswerts.
  3. Verfahren nach einem der Ansprüche 1 oder 2, wobei die FPWD-Systemkomponente eine Pumpe (5051) umfasst, die zum Pumpen des Wassers konfiguriert ist, und der Motor (5052) konfiguriert ist, um Betriebsvorgänge der Pumpe (5051) anzutreiben.
  4. Verfahren nach einem der Ansprüche 1-3, wobei das Laufenlassen des Motors (5052) Überprüfen einer Anstiegsrate des Fluiddrucks umfasst.
  5. Verfahren nach einem der Ansprüche 1-4, wobei das Berechnen der Luftmenge in dem FPWD-System (501) auf dem Anfangs- und dem neuen Wert des Zustands, der bestimmten Zeitspanne und einem Kapazitäts- und Betriebsparameter der FPWD-Systemkomponente basiert.
  6. Verfahren nach einem der Ansprüche 1-5, ferner umfassend Protokollieren der berechneten Luftmenge.
  7. Verfahren nach einem der Ansprüche 1-6, ferner umfassend:
    Bestimmen, ob ein Alarm gemäß der berechneten Luftmenge erforderlich ist;
    Auslösen des Alarms gemäß den Ergebnissen des Bestimmens; und
    Stabilisieren des FPWD-Systems (501).
EP17791720.0A 2017-10-16 2017-10-16 Verfahren zum betrieb eines feuerschutzwasserverteilungssystems Active EP3697506B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2017/050720 WO2019077192A1 (en) 2017-10-16 2017-10-16 WATER DISTRIBUTION SYSTEM FOR FIRE FIGHTING AND PERFORMANCE ANALYZER

Publications (2)

Publication Number Publication Date
EP3697506A1 EP3697506A1 (de) 2020-08-26
EP3697506B1 true EP3697506B1 (de) 2023-11-29

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EP (1) EP3697506B1 (de)
ES (1) ES2965079T3 (de)
FI (1) FI3697506T3 (de)
MX (1) MX2020004528A (de)
WO (1) WO2019077192A1 (de)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5680329A (en) * 1996-07-05 1997-10-21 Lloyd; Steven J. Fire protection code compliance verification system and method
JP4317093B2 (ja) * 2004-07-26 2009-08-19 株式会社荏原製作所 消火ポンプ装置
SE534120C2 (sv) * 2009-09-16 2011-05-03 Firefly Ab Mätutrustning för att fastställa ett förhållande mellan innesluten gasvolym och innesluten vätskevolym i en ackumulatortank
US10240593B2 (en) * 2011-03-04 2019-03-26 Asco Power Technologies, L.P. Systems and methods of controlling pressure maintenance pumps and data logging pump operations

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EP3697506A1 (de) 2020-08-26
MX2020004528A (es) 2020-10-19
FI3697506T3 (fi) 2023-12-04
ES2965079T3 (es) 2024-04-11
WO2019077192A1 (en) 2019-04-25

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