JP2010167157A - Fire extinguishing pump system and fire extinguishing equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly reliable fire extinguishing pump system capable of varying a water discharge amount, and also to provide fire extinguishing equipment. <P>SOLUTION: The fire extinguishing equipment 100 with the fire extinguishing pump system 1 includes: a fire extinguishing pump unit 11 having fire extinguishing pumps 24 arranged in parallel, motors 23 each connected to the fire extinguishing pumps 24 and driven by rated power, and pressure detectors 16 arranged on the secondary sides of the fire extinguishing pumps 24; a control board 17 for driving the motors 23; and a water discharge means 110 arranged on the secondary side of the fire extinguishing pump unit 11. The control board 17 drives the number of motors 23 enough to make the discharge water amount of the fire extinguishing pumps 24 be equal to or more than the water discharge amount to be discharged from the water discharge means 110, on the basis of pressure detected by the pressure detectors 16 and the water discharge state of the water discharge means 110. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fire extinguishing pump device and a fire extinguishing equipment capable of controlling the discharge amount from the fire extinguishing pump.

  2. Description of the Related Art A fire pump device is known that supplies increased pressure water to a water discharge means such as a fire hydrant or a sprinkler head in the event of a fire in a building or the like.

  When water is discharged from the sprinkler head using such a fire pump device, the amount of water supplied to each sprinkler head provided in the building is the amount of water that can be discharged determined for each sprinkler head. Necessary. For example, when the amount of water discharged per sprinkler head is 90 L / min and the sprinkler head is provided at 30 locations in the building, the fire pump apparatus can supply water at 90 L / min to 2700 L / min. Things are installed. Similarly, even when water is discharged from a fire hydrant through a hose, a fire pump device capable of supplying a predetermined amount of water that can be extinguished is installed. For this reason, the large-sized (large diameter) pump is used for the fire pump device.

  In addition, when a fire breaks out, when using a fire extinguisher pump device that controls the speed of the pump with an inverter based on the pressure on the discharge side of the pump, or a high-rise building, etc., connect multiple pumps in series. There is known a fire extinguishing pump device that performs variable speed control by an inverter based on the pressure on the discharge side of the above, and a fire extinguishing equipment using such a fire pump device (see Patent Document 1).

JP 2006-034529 A

  The fire extinguishing pump apparatus and the fire extinguishing equipment described above have the following problems. That is, when a large-diameter pump is used for the above-described fire pump device, the amount of water supplied to the pump may be small in a small-scale fire such as a part of a building. However, when the large pump is operated so that the amount of water discharged becomes a small amount of water, it is necessary to increase the amount of escaped water due to an increase in the water temperature by driving the pump.

  In addition, a large-diameter pump has a problem that the pump efficiency is poor when operated with a small amount of water. In addition, since the motor used for the large-diameter pump has a large motor capacity, there is a problem that the cost of the power equipment such as the starting power equipment and the control panel becomes high.

  Moreover, when using for such a fire extinguishing, it is necessary to make the water flow (water quantity) from water discharge means, such as a sprinkler, uniform. For this reason, it is necessary to reduce the pressure difference within the specified water volume, and therefore it is necessary to design and manufacture a pump for use in fire extinguishing equipment taking into consideration the sleeping curve characteristics. For this reason, pumps for other uses such as a water supply pump cannot be used, and each pump needs to be designed as a fire extinguishing pump. Therefore, the types of pumps are increased, and manufacturing costs and management costs may be improved. .

  In addition, in the fire pump apparatus that performs variable speed control with the inverter described above, even if the pressure difference of the fire pump can be reduced and the amount of water can be made uniform by performing variable speed control with the inverter, energization to the inverter continues. Therefore, its reliability is low. That is, the inverter may cause a failure or the like in proportion to the time during which the current is applied, and the reliability of the inverter is lowered. For this reason, at the time of use, there exists a possibility that the variable control of a motor cannot be performed by an inverter. In particular, since such a fire pump device is mainly used in a fire (emergency), it is expected that it can be used reliably in an emergency.

  Therefore, an object of the present invention is to provide a fire extinguishing pump device and a fire extinguishing equipment that can vary the amount of discharged water and have high reliability.

  In order to solve the problems and achieve the object, the fire pump device and fire fighting equipment of the present invention are configured as follows.

  As one aspect of the present invention, in a fire extinguishing pump device that increases the pressure of water discharged from a water discharge means, a plurality of motors driven at rated power, a suction pipe connected to a water supply source, and a branch pipe that branches the suction pipe A plurality of pumps respectively provided in these branch pipes and arranged in parallel and driven at the rated rotational speed by the motor, and the secondary side of these pumps are joined together and connected to the water discharge means. A discharge pipe provided on the discharge pipe and detecting the pressure of the discharge pipe, a pressure detected by the pressure detector, and a water discharge state of the water discharge means, A controller that determines the number of motors driven so that the amount of water discharged from the pump is greater than the amount of water discharged from the water discharge means, and drives the motors of this number of drives. Fire pump apparatus is provided, wherein.

  As one aspect of the present invention, a plurality of motors driven at rated power, a suction pipe connected to a water supply source, a branch pipe that branches this suction pipe, and a branch pipe that is provided in each of these branch pipes and arranged in parallel A plurality of pumps driven by the motor at a rated rotational speed, a secondary side of these pumps merged, a discharge pipe connected to the water discharge means, and a discharge pipe connected to the discharge pipe. Water discharge means capable of discharging water discharged from the water, a pressure detector provided in the discharge pipe for detecting the pressure of the discharge pipe, a pressure detected by the pressure detector, and water discharge of the water discharge means Based on at least one of the states, a control is made to determine the number of motors driven so that the amount of water discharged from the pump is greater than the amount of water discharged from the water discharge means, and to drive the motors of this number of drives. If, fire-extinguishing system is provided, characterized in that it comprises a.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to set it as the fire-extinguishing pump apparatus and fire-extinguishing equipment which can vary discharge water amount and are reliable.

Explanatory drawing which shows typically the fire extinguishing equipment using the fire pump apparatus which concerns on one embodiment of this invention. Explanatory drawing which shows typically the fire pump unit used for the fire pump apparatus. Explanatory drawing which shows the discharge head and discharge water amount of the fire-extinguishing pump apparatus.

  FIG. 1 is an explanatory diagram schematically showing a fire extinguishing equipment 100 using a fire pump device 1 according to an embodiment of the present invention, and FIG. 2 schematically shows a fire pump unit 11 used in the fire pump device 1. FIG. 3 is an explanatory view showing a discharge head and a discharge water amount of the fire pump apparatus 1. In FIG. 1, C is a water supply source, D is a drainage section, F is a floor of a building, K is a power cable, and S is a signal line.

  As shown in FIG. 1, the fire-extinguishing pump apparatus 1 is used for the fire-extinguishing equipment 100 provided in the building, for example. The fire extinguishing equipment 100 includes a fire extinguishing pump device 1 and water discharge means 110 connected to the fire extinguishing pump device 1.

  The fire pump apparatus 1 includes a suction pipe 10, a fire pump unit 11, a discharge pipe 12, a priming means 13, a draining means 14, a reserve water source 15, a pressure detector 16, a control panel (control unit). 17). The suction pipe 10 is connected to a water supply source C such as a water storage tank or a water main.

  As shown in FIG. 2, the fire pump unit 11 includes a branch part 20 that branches the suction pipe 10 into a plurality of parts, and a branch pipe 21 connected to the branch part 20. The fire-extinguishing pump unit 11 includes an on-off valve 22 that can be manually opened and closed, a fire-extinguishing pump 24 to which a motor 23 is connected, a check valve 25, and an on-off valve 26. Connected sequentially and sequentially. In addition, the fire pump unit 11 includes a merging portion 27 that merges the branch pipes 21 connected to the secondary side of the on-off valve 26, respectively. A discharge pipe 28 is connected to the merging portion 27. The fire pump unit 11 includes a pressure vessel 29 capable of accumulating pressure on the secondary side of the junction 27.

  The branch part 20 is formed to be able to branch the same number of branch pipes 21 as the number of fire pumps 24. The motor 23 is connected to the control panel 17 via the signal line S, and is configured to be drivable with the rated power supplied from the control panel 17. The motor 23 is formed so that the fire extinguishing pump 24 can rotate at the rated rotation speed.

  A plurality of fire extinguishing pumps 24, for example, three are provided. These fire-extinguishing pumps 24 are formed so that the total discharge water amount can discharge a water amount equal to or greater than the maximum water amount discharged from the water discharge means 110 in the fire-extinguishing equipment 100.

  A plurality of fire extinguishing pumps 24 are provided in parallel, and are formed to have a capability of discharging the maximum water discharge amount discharged by the water discharge means 110 by simultaneously operating the plurality of fire pumps 24. Moreover, the fire pump 24 is formed so that the discharge flow rate can be changed depending on the number of fire pumps 24 to be operated. That is, as shown in FIG. 3, the plurality of fire extinguishing pumps 24 can be driven by a single unit or a plurality of units according to the operation status of the water discharge means 110, and the number of fire extinguishing pumps 24 to be driven is As the amount of water increases, the amount of water discharged from the fire pump 24 can be varied from a small amount of water to a maximum amount of water.

More particularly, as shown in FIG. 3, fire pumps 24 which are a plurality arranged in parallel, when driving the one or, the discharge lift and discharge water amount shown in FIG. 3 T _1. The fire pumps 24 while driving a single and to further drive a single, as shown in FIG. 3 T _2, the discharge amount of water and thus to increase. Similarly, by driving all the fire pumps 24, further ejection amount of water is increased, as shown in FIG. 3 T _3, so that the discharge flow rate is increased. In addition, since the fire extinguishing pump 24 is driven by the motor 23 at the rated rotational speed, this rated rotational speed is set to a rotational speed with a substantially constant discharge head and good pump efficiency. For this reason, every time the number of fire pumps 24 is increased, the amount of water discharged from the fire pump 24 gradually increases as indicated by Q _{1 to} Q ₃ in FIG.

  Here, the small amount of water and the maximum amount of water are discriminated by the number of fire extinguishing pumps 24 to be driven, but the detailed discharge water amount is appropriately set depending on the shape, diameter and rotation speed of the extinguishing pump 24. Yes, the details are omitted here.

  The plurality of fire extinguishing pumps 24 are configured to be capable of alternating operation in which the fire extinguishing pumps 24 to be driven or stopped are alternately operated, for example, every time depending on the operating state of the water discharge means 110 of the fire extinguishing pump 24.

  The exhalation means 13 branches from the discharge pipe 12 and is connected to the fire extinguishing pump unit 11. In addition, the exhalation means 13 is disposed at a higher position than the fire pump unit 11. The exhalation means 13 is formed so that exhalation water can be filled in the fire pump 24 when the fire pump 24 is initially operated. Such a priming means 13 has, for example, a priming tank 30 for storing priming water. The expiratory means 13 includes an on-off valve 31 provided between the expelling tank 30 and the discharge pipe 12, and a check valve 32 that prevents water from passing through the fire pump unit 11 to the expelling means 13. I have.

  The escape water means 14 includes a relief water pipe 35 branched from the discharge pipe 12 and connected to the fire pump unit 11, a check valve 36 provided in the relief water pipe 35, and an on-off valve 37. Yes. Further, the escape water means 14 is provided with the relief water pipe 35 in the drainage part D, and when the check valve 36 and the open / close valve 37 are opened, the pressure is increased by the fire pump unit 11. It is formed so that water can escape to the drainage part D. The on-off valve 37 is an electromagnetic valve that is opened and closed by the control panel 17, and is formed to be able to drain into the drainage part D by opening when the inside of each pipe becomes a predetermined pressure or higher.

  The reserve water source 15 is provided, for example, on the rooftop of a building, and is connected to the discharge pipe 12. The reserve water source 15 is, for example, an elevated tank or the like, and is formed to allow water to flow into the discharge pipe 12 when the pressure of the water discharged from the fire pump unit 11 decreases. That is, the check water valve 38 is provided in the reserve water source 15. Accordingly, the reserve water source 15 opens the check valve 38 when the water pressure of the reserve water source 15 is higher than the water pressure discharged from the fire extinguishing pump unit 11, and the water in the reserve water source 15 enters the discharge pipe 12. It is formed to allow water to pass through.

  The pressure detector 16 is configured to be able to detect the pressure of the water discharged from the fire pump unit 11. The pressure detector 16 is connected to the control panel 17 by a signal line S, and is configured to transmit detected pressure detection data to the control panel 17.

  The control panel 17 is formed so that rated power can be supplied to the motor 23 via the signal line S so that the motor 23 can be driven and stopped. Further, the control panel 17 is configured to be able to receive detection data transmitted from the pressure detector 16. The control panel 17 has a power cable K connected to a power source or the like that supplies power, and power is supplied to the control panel 17 via the power cable K.

  The control panel 17 determines the water discharge state of the detection data received from the pressure detector 16 and the detector 114 which will be described later, and the water discharge means 110, and the fire extinguishing pump that needs to be driven from the amount of discharged water depending on the number of fire pumps 24 driven. The number of 24 is determined. The control panel 17 has a function for controlling the number of fire fighting pumps 24 that drives and stops each motor 23 of the fire fighting pump unit 11 based on the determined number of fire pumps that need to be driven. The control panel 17 performs driving / stopping of each motor 23 based on the detection data, thereby changing the number of fire pumps 24 to be driven and changing the amount of water discharged from the fire pump unit 11 from a small amount of water to a maximum amount of water. It is possible to be formed.

  Further, the control panel 17 replaces the fire-extinguishing pump 24 driven every predetermined time when at least one fire-extinguishing pump 24 (stopped driving pump 24) other than the fire-extinguishing pump 24 being driven is at least one. The so-called alternate operation is possible. Further, the control panel 17 is configured to be able to open and close the open / close valve 37 of the water discharge means 14 based on the pressure of the discharge pipe 12 or the water temperature.

  The water discharge means 110 is constituted by, for example, a plurality of water dischargers, for example, sprinklers 111 provided for each floor F of the building. The sprinkler 111 is branched and connected from the discharge pipe 12 and has an arrangement pipe 112 arranged on each floor. The sprinkler 111 is provided between a plurality of sprinkler heads 113 provided for each floor F provided on the arrangement pipe 112, and between the arrangement pipe 112 and the sprinkler head 113, and detects water amount (flow rate) and pressure. And a detector 114 capable of

  In the event of a fire, the sprinkler head 113 has a water outlet that can be discharged to the floor of a building, for example, by opening and discharging water with heat during a fire. Further, the sprinkler head 113 is formed so that when one of the sprinkler heads 113 provided on the same floor is opened and discharged, the other sprinkler heads 113 provided on the same floor are also opened and interlocked to discharge water. ing.

  The detector 114 is connected to the control panel 17 via the signal line S. The detector 114 is formed so as to be able to detect, for example, the pressure of the arrangement pipe 112, the open / close state of the sprinkler head 113, and the flow rate. The detector 114 can detect the water discharge state of the water discharge means 110 from at least one of the pressure, the flow rate, and the open / close state of the sprinkler head 113, and can transmit detection data such as the water discharge state, pressure, flow rate and the like to the control panel 17. Is formed.

According to the fire-extinguishing pump apparatus 1 of the fire-extinguishing equipment 100 configured as described above, the fire-extinguishing equipment 100 installed in the building is always operated except when the fire-extinguishing equipment 100 is inspected. Become.
First, activation and operation of the fire extinguishing equipment 100 immediately after installation of the fire extinguishing equipment 100 or after inspection of the fire extinguishing equipment 100 will be described.

  As activation of the fire extinguishing equipment 100, first, the power cable K is connected to a power source, and power is supplied to the control panel 17. When power is supplied to the control panel 17, the control panel 17 receives pressure detection data from the pressure detector 16 and the detector 114. When the received detection data is equal to or lower than the predetermined pressure, the control panel 17 supplies power to each motor 23 of the fire extinguishing pump unit 11 and causes the motor 23 to perform a rated operation. Each fire pump 24 is driven by the operation of the motor 23.

  The fire pump 24 sucks the water in the branch pipe 21 branched from the suction pipe 10 and increases the pressure. Water discharged from the fire extinguishing pump 24 is passed through the junction 27 to the discharge pipe 28. At this time, if the fire pump 24 is not filled with water, the on-off valve 31 of the exhalation means 13 is opened to perform exhalation.

  The pressure detector 16 and the detector 114 detect the pressure and the water discharge amount from the water discharge means 110 and transmit detection data to the control panel 17. When the water increased in pressure by the fire pump 24 reaches a predetermined pressure and the water discharge means 110 does not discharge the water, the control panel 17 indicates that the pressure is a predetermined pressure from the received detection data. And one motor 23 of the fire pump unit 11 is continuously driven and the other motors 23 are stopped. That is, the control panel 17 drives (operates) only one fire extinguishing pump 24 as a small water amount operation. The predetermined pressure may be set in a plurality of stages, and the driving of the fire extinguishing pump 24 may be stopped sequentially.

  The control panel 17 always performs a small water amount operation and continues to receive detection data from the pressure detector 16 and the detector 114. For example, even when the small amount of water operation is performed, when the pressure increases or the water temperature rises, the control panel 17 opens the on-off valve 37 of the water discharge means 14 to discharge the water. Do. In addition, the control panel 17 causes the fire pumps 24 to be operated alternately every predetermined time when the fire pump unit 11 is operated with a small amount of water.

  In this way, the fire extinguishing equipment 100 is activated, and the fire extinguishing pump device 1 is operated, so that the fire extinguishing equipment 100 is operated and maintained until an emergency such as a fire.

Next, explanation will be given in case of emergency such as a fire.
When a fire occurs in the building, the sprinkler head 113 of the water discharge means 110 is opened by the heat of the fire. Note that the sprinkler head 113 may be opened when a signal indicating a fire is sent to the smoke detector or artificially the control panel 17.

  For example, when there is a fire on one floor F of a building, when at least one sprinkler head 113 is opened, all sprinkler heads 113 in the same floor F are opened and water discharge into the floor F is started. .

  At this time, the pressure detector 16 and the detector 114 detect pressure and flow rate. When this detection data is transmitted to the control panel 17, the control panel 17 increases the pressure in the discharge pipe 12, the current water discharge amount, and the fire extinguishing pump 24 driven from the received detection data. It is determined whether or not the discharged water amount is equal to or greater than the discharged water amount from the pressure and the discharged water amount (discharge flow rate).

At this time, it was determined that the amount of water discharged from the water discharge means 110 is the amount of water discharged by one fire pump 24, that is, the amount of water discharged is less than the amount of discharged water (Q ₁ ) of _one fire pump 24. In this case, the control panel 17 continues to operate only one fire extinguishing pump 24 and continues to supply water to the secondary side of the fire extinguishing pump 24.

When the control panel 17 determines that the amount of water discharged is greater than the amount of discharged water from one fire pump 24, the fire pump 24 during operation is continued and any one of the fire pumps 24 that are stopped is stopped. Start one operation. That is, the control panel 17 operates two fire pumps 24. Further, the control panel 17 determines whether or not the discharge water amount (Q ₂ ) of the _two fire extinguishing pumps 24 is equal to or greater than the water discharge amount based on the pressure detected data from the pressure detector 16 and the detector 114. When the discharge water amount of the two fire extinguishing pumps 24 is equal to or greater than the water discharge amount, the operation of the two fire extinguishing pumps 24 is maintained.

For example, when the range of a fire spreads to another floor F due to fire spread or the like, water is discharged from the sprinkler head 113 on the other floor F as well. At this time, when the control panel 17 determines from the detection data received from the pressure detector 16 and the detector 114 that the water discharge amount is larger than the discharge water amount of the two fire pumps 24, the fire extinguishing is stopped. The operation of the pump 24 is started. That is, the control panel 17 operates all the fire pumps 24. The fire-extinguishing pump 24 is formed so that the required amount of water can be covered even when the amount of discharged water (Q ₃ ) when all (three units) are driven is discharged from all the sprinkler heads 113. Yes.

  For this reason, the control panel 17 has one or two fire pumps 24 (other than all the fire pumps 24) based on the detection data transmitted from the pressure detector 16 and the detector 114. The operation of all the fire pumps 24 is maintained until it can be covered. When the amount of water discharged from the sprinkler head 113 is reduced, the control panel 17 operates a number of fire pumps 24 that can cover the required amount of water.

  According to the fire-extinguishing equipment 100 using the fire-extinguishing pump device 1 configured as described above, the control panel 17 has a plurality of fire-extinguishing pumps 24 based on the pressure and flow rate on the secondary side of the fire-extinguishing pump unit 11. By controlling the number of fire pumps 24 to be operated, the amount of water discharged from the fire pump device 1 can be adjusted. That is, the fire pump device 1 can change the discharge water amount of the fire pump 24 from the small water amount operation to the maximum water amount operation according to the number of fire pumps 24 driven.

  Further, the number of sprinkler heads 113 that discharge water can be used to operate the fire extinguishing pump 24 by the number that can discharge the necessary amount of water, and therefore it is possible to prevent the useless operation of the fire extinguishing pump 24. It becomes possible to reduce the power consumption. Moreover, the operation of the fire pump 24 may be a rated operation, and it is only necessary to operate a number of fire pumps 24 that have a discharge water amount equal to or greater than the water discharge amount. Moreover, since the fire extinguishing pump 24 is operated at the rated rotational speed which is an efficient rotational speed, the pump efficiency is good.

  Moreover, since the fire pump 24 is configured to be able to discharge a required maximum amount of water by operating a plurality of fire pumps connected in parallel, the fire pump 24 itself is small. For this reason, the motor 23 for driving the fire pump 24 may be small, and the manufacturing cost of the fire pump unit 11 can be reduced. Further, the motor 23 becomes smaller as the fire pump 24 becomes smaller. Thereby, the electric power required for driving the motor 23 may be small, power consumption can be reduced, and the installation cost of the power equipment (the control panel 17 and the power supply) can be reduced.

  Furthermore, the control panel 17 can average the drive time of the fire pump 24 by alternately operating the fire pump 24. As a result, it is possible to prevent performance degradation or failure due to continuous operation of the fire pump 24 or any one of the fire pumps 24 being biased. In addition, even if any one of the fire pumps 24 breaks down, the other fire pumps 24 can be driven, so that water can be reliably discharged without impairing the water discharge function. . For this reason, the reliability of the fire pump apparatus 1 and the fire extinguishing equipment 100 is also improved.

  As described above, according to the fire-extinguishing equipment 100 using the fire-extinguishing pump device 1 according to the present embodiment, a plurality of fire-extinguishing pumps 24 that are driven at the rated rotational speed are provided, and the fire-extinguishing pump 24 that operates according to the state of the water discharge means 110. By controlling the number of units, it is possible to reduce the cost and save energy and improve the reliability. Further, by alternately operating the plurality of fire pumps 24, it is possible to prevent the performance of the fire pumps 24 from being deteriorated or broken. Further, even in the event of a failure, the other fire pumps 24 can be driven, and the reliability of the fire pump device 1 and the fire extinguishing equipment 100 can be improved.

  The present invention is not limited to the above embodiment. In the above-described example, the number of fire pumps 24 is three, but this is the number of water whose maximum water amount discharged when all the fire pumps 24 are driven is equal to or greater than the water discharge amount discharged by the water discharge means 110. I just need it. Moreover, in the example mentioned above, although the water discharge means 110 was set as the structure which uses the sprinkler 111 as a water discharger, it is not limited to this. For example, not only the sprinkler 111 but also a configuration using a water discharge hose may be used. In other words, any configuration that can discharge water for extinguishing a fire is applicable.

  Moreover, in the example mentioned above, although the on-off valve 37 of the water discharge means 14 was demonstrated as an electromagnetic valve, this may be a relief valve. That is, it is only necessary that the water that is constantly discharged by the fire pump unit 11 does not reach a high temperature, or when the water pressure in each pipe (such as the discharge pipe 12) increases from a predetermined pressure. In addition, various modifications can be made without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Fire pump apparatus, 10 ... Suction pipe, 11 ... Fire pump unit, 12 ... Discharge pipe, 13 ... Expiration means, 14 ... Escape water means, 15 ... Reserve water source, 16 ... Pressure detector, 17 ... Control panel, DESCRIPTION OF SYMBOLS 20 ... Branch part, 21 ... Branch pipe, 22 ... Open / close valve, 23 ... Motor, 24 ... Fire extinguishing pump, 25 ... Check valve, 26 ... Open / close valve, 27 ... Junction part, 28 ... Discharge pipe, 29 ... Pressure vessel, DESCRIPTION OF SYMBOLS 30 ... Expiratory water tank, 31 ... Open / close valve, 32 ... Check valve, 35 ... Water piping, 36 ... Check valve, 37 ... Open / close valve, 38 ... Check valve, 100 ... Fire extinguishing equipment, 110 ... Water discharge means, 111 ... Sprinkler (automatic water discharge device), 112 ... disposition pipe, 113 ... sprinkler head, 114 ... detector, D ... drainage section, F ... floor, K ... power cable, S ... signal line.

Claims (4)

In the fire-extinguishing pump device that increases the pressure of water discharged from the water discharge means,
Multiple motors driven at rated power;
A suction pipe connected to a water supply source;
A branch pipe for branching the suction pipe into a plurality of parts;
A plurality of pumps provided in each of these branch pipes and arranged in parallel, and driven by the motor at a rated speed,
While joining the secondary side of these pumps, a discharge pipe connected to the water discharge means,
A pressure detector provided in the discharge pipe for detecting the pressure of the discharge pipe;
Based on at least one of the pressure detected by the pressure detector and the water discharge state of the water discharge means, the number of motors driven is determined such that the amount of water discharged from the pump is greater than the amount of water discharged from the water discharge means. And a controller that drives the motors of this number of drives,
A fire-extinguishing pump device comprising:   2. The fire-extinguishing pump device according to claim 1, wherein when the number of pumps to be stopped is one or more, the control unit causes the pumps to operate alternately. Multiple motors driven at rated power;
A suction pipe connected to a water supply source;
A branch pipe for branching the suction pipe into a plurality of parts;
A plurality of pumps provided in each of these branch pipes and arranged in parallel, and driven by the motor at a rated speed,
While joining the secondary side of these pumps, a discharge pipe connected to the water discharge means,
A water discharge means connected to the discharge pipe and capable of discharging water discharged from the pump;
A pressure detector provided in the discharge pipe for detecting the pressure of the discharge pipe;
Based on at least one of the pressure detected by the pressure detector and the water discharge state of the water discharge means, the number of motors driven is determined such that the amount of water discharged from the pump is greater than the amount of water discharged from the water discharge means. And a controller that drives the motors of this number of drives,
Fire extinguishing equipment characterized by comprising.   The fire extinguishing equipment according to claim 3, wherein the control unit causes the pumps to operate alternately when the number of the pumps to be stopped is one or more.

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