JP2021127746A - Pump device - Google Patents

Abstract

To provide a pump device capable of performing auxiliary pressurization.SOLUTION: A pump device 1 comprises: a pump unit 12 connected to a pipe 501 which is closed in a terminal or a middle part; a pressure detector 33 which detects a pressure at a secondary side of the pump unit 12; a storage section 43 which stores a first threshold that is a pressure at the secondary side of the pump unit 12 to activate the pump unit 12 for auxiliary pressurization, a second threshold which is a pressure at the secondary side of the pump unit 12 to activate the pump unit 12 for fire-fighting and is smaller than the first threshold, and a predetermined time for starting the auxiliary pressurization of the pump unit 12; and a control section 41 by which, when a state where a pressure detected by the pressure detector 33 is smaller than the first threshold and greater than the second threshold is continued for a predetermined time, the pump unit 12 is activated to perform an auxiliary pressurizing operation and when a pressure detected by the pressure detector 33 is smaller than the second threshold, the pump unit 12 is activated to perform a fire-fighting operation.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pumping device used in a building.

Pumping devices that supply water to buildings have long been known. As such a pump device, for example, a fire extinguishing pump (see, for example, Patent Document 1) that supplies water to a sprinkler or the like in the event of a fire is known.

When such a pump device is used as a fire extinguishing pump in fire extinguishing equipment, it is required to always maintain the pressure in the piping on the secondary side of the fire extinguishing pump above a certain pressure value. Therefore, in the fire extinguishing equipment, apart from the fire extinguishing pump, an auxiliary pressurizing device for maintaining the pressure in the piping on the secondary side of the fire extinguishing pump at a constant pressure value is used (see, for example, Patent Document 2). ..

Japanese Patent No. 6442338 Japanese Patent No. 4094736

However, if the auxiliary pressurizing device stops functioning due to a failure or the like, or if the pressure in the pipe drops due to water leakage or the like, a fire signal may be sent and the fire extinguishing pump may start. Further, depending on the installation location of the fire extinguishing equipment, it may be difficult to secure a space for installing an auxiliary pressurizing device in addition to the fire extinguishing pump.

Therefore, an object of the present invention is to provide a pump device capable of auxiliary pressurization.

According to one aspect of the invention, the pump device has a motor and a pump, a pump unit connected to a pipe that is closed at the end or midway, and pressure detection that detects the pressure on the secondary side of the pump. The first threshold, which is the pressure on the secondary side of the pump that starts the pump unit for auxiliary pressurization, and the pressure on the secondary side of the pump that starts the pump unit for fire extinguishing. , A second threshold value smaller than the first threshold value, a storage unit that stores a predetermined time for starting the auxiliary pressurization of the pump unit, and a pressure detected by the pressure detector are the first threshold value. When the state of being smaller than and larger than the second threshold value elapses for the predetermined time, the pump unit is started to perform auxiliary pressurization operation, and the pressure detected by the pressure detector is the second. The pump unit is provided with a control unit for starting and extinguishing a fire when the value is smaller than the threshold value.

According to the present invention, it is possible to provide a pump device capable of auxiliary pressurization.

Explanatory drawing which shows the structure of the fire extinguishing equipment which concerns on 1st Embodiment of this invention. The side view which shows the structure of the pump device used for the water supply facility. The front view which shows the structure of the control panel used for the pump device. The front view which shows the internal structure of the control panel. Explanatory drawing which shows the structure of the fire extinguishing equipment which concerns on 2nd Embodiment of this invention.

(First Embodiment)
Hereinafter, the configuration of the pump device 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. In the present embodiment, the pump device 1 will be described with reference to an example of a fire extinguishing pump device used in the fire extinguishing equipment 100 as a water supply equipment.

FIG. 1 is an explanatory view showing the configuration of the fire extinguishing equipment 100 according to the embodiment of the present invention, FIG. 2 is a side view showing the configuration of the pump device 1, and FIGS. 3 and 4 are controls used for the pump device 1. It is a front view which shows the appearance and the internal structure of the board 18.

As shown in FIG. 1, the pump device 1 is used for the fire extinguishing equipment 100 provided in the building. First, the configuration of the fire extinguishing equipment 100 will be described. As shown in FIG. 1, the fire extinguishing equipment 100 includes a pump device 1, a water discharge means 201, a fire judgment device 301, and a water supply source 401.

First, the water discharge means 201, the fire judgment device 301, and the water supply source 401 of the fire extinguishing equipment 100 will be described with reference to FIG. The water discharge means 201 is, for example, a plurality of water dischargers provided for each floor of the building, pipes connected to other water discharge devices, and the like. The water discharge means 201 is opened in the event of a fire to discharge water for extinguishing the fire. As a specific example, the water discharge means 201 includes, for example, a plurality of sprinklers 211, a fire hydrant 212, and a connected water pipe 213.

The sprinkler 211 is branched and connected from the pipe 501, and includes an arrangement pipe 211a arranged on each floor, and a plurality of sprinkler heads 211b provided for each floor provided on the arrangement pipe 211a. Further, the sprinkler 211 may be provided with a detector capable of detecting the amount of water (flow rate) and pressure between the arrangement pipe 211a and the sprinkler head 211b.

The sprinkler head 211b has, for example, a water discharge port capable of discharging water on the floor of a building by opening and discharging water due to the heat of a fire. Further, in the sprinkler head 211b, for example, when any of the sprinkler heads 211b provided on the same floor is opened and water is discharged, the other sprinkler heads 211b provided on the same floor are also opened and water can be discharged in conjunction with each other. It is formed.

The fire hydrant 212 is provided at least one of indoors and outdoors of the building. The fire hydrant 212 is, for example, an indoor fire hydrant. The fire hydrant 212 includes, for example, a fire hydrant box 212a, a hose 212b housed in the fire hydrant box 212a and connected to a pipe 501, a nozzle 212c provided on the hose 212b, and an on-off valve provided on the nozzle 212c. ing. Further, a water discharge port provided with an on-off valve is provided between the hose 212b and the pipe 501, and the hose 212b is fluidly connected to the pipe 501 by connecting the hose 212b to the water discharge port. ..

The connected water pipe 213 is provided, for example, indoors or outdoors in a building. The connected water pipe 213 is a so-called fire brigade dedicated plug. The connected water pipe 213 is, for example, a wet plug-in type outlet provided indoors.

The fire judgment device 301 is a start device for starting the pump device 1. For example, the fire determination device 301 includes a fire alarm 311, a manual start device for a fire hydrant 312, a remote start device 313, a water flow detector 314, an interlocking device for a fire hydrant 315, and a pressure detector 33. The fire determination device 301 is electrically connected to the control panel 18 via, for example, a signal line 99.

The fire alarm 311 senses, for example, smoke or heat, and issues a start signal of the pump unit 12 to the control panel 18.

The fire hydrant manual activation device 312 is provided, for example, in the fire hydrant box 212a of the fire hydrant 212. The manual start device 312 for the fire hydrant is manually operated to issue a start signal of the pump unit 12 to the control panel 18.

The remote activation device 313, for example, is remotely controlled from an external organization such as a fire station or a disaster prevention center to issue a activation signal of the pump unit 12 to the control panel 18.

When water of a predetermined flow rate or flow velocity flows into the pipe 501, the water flow detector 314 operates a switch provided inside and issues a start signal of the pump unit 12 to the control panel 18. The switch provided inside the water flow detector 314 is, for example, a push-type micro switch, a paddle switch, a secondary side of a valve provided inside the water flow detector 314, and the water flow detector 314. It is a pressure switch provided.

The fire hydrant interlocking device 315 is provided, for example, in the fire hydrant box 212a of the fire hydrant 212. The fire hydrant interlocking device 315 issues a start signal of the pump unit 12 to the control panel 18 when, for example, the hose 212b is manually extended.

The water supply source 401 is a water tank for extinguishing a fire. The water supply source 401 is provided on the primary side of the pump device 1.

The pipe 501 is provided on the secondary side of the pump device 1 and is connected to the sprinkler 211, the fire hydrant 212, and the connected water pipe 213. The pipe 501 is provided with a water flow detector 314. The pipe 501 is closed at the end or in the middle by a sprinkler 211, a fire hydrant 212 and a connected water pipe 213.

As shown in FIGS. 1 and 2, the pump device 1 includes a base 11, a pump unit 12, a discharge pipe 13, a pressure tank 14, an automatic on-off valve 15, a temperature detector 16, and a priming tank 17. , And a control panel 18.

The base 11 is fixed to the installation surface of the pump device 1 of the building. The base 11 fixes the pump unit 12, the pressure tank 14, the priming tank 17, and the control panel 18 on the upper surface thereof.

The pump unit 12 includes a pump 21 and a motor 22. The pump 21 includes a suction port 21a and a discharge port 21b. The pump 21 houses an impeller fixed to a rotating shaft inside the pump 21. The pump 21 discharges the increased pressure water to the secondary side.

The motor 22 is formed so that the rotation shaft can rotate. The motor 22 drives the impeller of the pump 21 by rotating the rotating shaft. The motor 22 is electrically connected to the control panel 18 via the signal line 99.

One end of the discharge pipe 13 is connected to the discharge port 21b of the pump 21, and the other end is connected to the pipe 501. The discharge pipe 13 has a check valve 13a.

The pressure tank 14 includes a tank 31, a pressure gauge 32, and a pressure detector 33. The tank 31 is formed so as to be able to store water of a predetermined pressure discharged from the pump 21. The tank 31 is provided in, for example, the discharge pipe 13. The pressure gauge 32 is formed so as to detect the pressure inside the tank 31 and display it to the outside. The pressure detector 33 is connected to the control panel 18 via a signal line 99. The pressure detector 33 is formed so that the pressure in the tank 31 can be transmitted to the control panel 18. As a specific example, the pressure detector 33 transmits a signal corresponding to the pressure to the control panel 18. Such a pressure detector 33 includes, for example, a strain gauge, and transmits a signal corresponding to the pressure value output by the strain gauge to the control panel 18.

The automatic on-off valve 15 is provided, for example, on the secondary side of the pump unit 12 and on the primary side of the water flow detector 314, on the secondary side of the pump unit 12 and on the primary side of the water flow detector 314. The connected branch pipe 15a is opened and closed. Here, the branch pipe 15a is, for example, a drainage pipe connected to a drainage port 15b or the like. In other words, the automatic on-off valve 15 is provided in the branch pipe 15a on the secondary side of the pump unit 12, and by opening the branch pipe 15a, the water on the secondary side of the pump unit 12 is drained to the drain port 15b.

The automatic on-off valve 15 is electrically connected to the control panel 18 by a signal line 99. The automatic on-off valve 15 is always closed and opens by a signal from the control panel 18 to drain the water existing on the secondary side of the pump unit 12 and the pipe 501 to the drain port 15b.

The temperature detector 16 is provided in, for example, the discharge pipe 13 or the pipe 501. The temperature detector 16 detects the temperature of water in any of the pipes 13 and 501 on the secondary side of the pump unit 12, or the surface temperature of any of the pipes 13 and 501. The temperature detector 16 is electrically connected to the control panel 18 via the signal line 99. The temperature detector 16 transmits the detected temperature information to the control panel 18.

The priming tank 17 is connected to the pump 21 via a pipe 17a so that priming water can be supplied to the pump 21. Further, the priming tank 17 is provided with an orifice in order to suppress the temperature rise of the pump 21, and has a relief pipe 17b that squeezes a part of the water boosted by the pump 21 and releases it to the priming tank 17.

The control panel 18 includes a control unit 41 inside. Further, the control panel 18 includes an input device 42, a storage unit 43, a notification unit 44, a communication unit 45, and a terminal unit 48. The control panel 18 also includes, for example, a control board 46 and a housing 47.

The control board 46 is composed of, for example, a single board 46a on which a control unit 41, a storage unit 43, a communication unit 45, and a terminal unit 48 are mounted. The housing 47 houses the control board 46 inside, and arranges the input device 42 and the notification unit 44 on a part of the outer surface. Further, the housing 47 houses a plurality of devices 38 such as a power transformer, a current transformer for current measurement, an electromagnetic contactor, and a circuit breaker for wiring.

The control unit 41 is connected to the motor 22 and the pressure detector 33 via the signal line 99. The control unit 41 is electrically connected to the input device 42, the storage unit 43, the notification unit 44, and the communication unit 45 via a signal line 99 such as a bus line.

The control unit 41 is formed so that the motor 22 can be driven. The control unit 41 is formed so that the motor 22 can be driven when it is determined that a fire has occurred. As a specific example, when the control unit 41 determines that the fire is based on the pressure detected by the pressure detector 33 or receives the start signal of the pump unit 12 issued by the fire determination device 301, the fire extinguishing operation is performed. The motor 22 is driven according to the program stored in the storage unit 43. For example, the control unit 41 determines that a fire occurs when the pressure detected by the pressure detector 33 is smaller than the second threshold value stored in the storage unit 43, which will be described later, and extinguishes the pump unit 12.

For example, in the fire extinguishing operation, the pump unit 12 is operated at the maximum speed so that the frequency of the motor 22 becomes the maximum frequency. Further, the control unit 41 continues the fire extinguishing operation until a stop command is issued from the outside by input to the input device 42, communication from the external terminal 90, communication from an external engine, or the like.

The control unit 41 has a function of detecting a current value when the motor 22 is energized. The control unit 41 has a calendar function capable of managing the date and a clock function capable of managing the time. The control unit 41 has a counter function for counting the time elapsed after the pump unit 12 is driven. The control unit 41 has an integrated value of the stop time of the pump unit 12 counted by the counter function after the drive of the pump unit 12 is stopped, the elapsed time after the operation of the pump unit 12, and an integrated value of the energization time of the control unit 41 and the motor 22. , A function to store the detected values detected in each inspection operation, threshold values such as current and pressure, history of energization and stop of the motor 22, opening / closing history of automatic on-off valve, external transmission destination information, etc. in the storage unit 43. have.

The control unit 41 has a function of transmitting information on the abnormality to the notification unit 44 when an abnormality occurs in the pump unit 12. The control unit 41 is formed so as to be able to transmit historical information such as the time counted by the counter function and the past drive information of the pump unit 12 to the communication unit 45 based on the instruction input by the input device 42.

The input device 42 is formed so that information such as a date and time and a command can be input. The input device 42 is formed so that the input information can be transmitted to the control unit 41.

The storage unit 43 stores, for example, a plurality of threshold values which are pressure values for determining to start the pump unit 12. As a specific example, the storage unit 43 starts the pump unit 12 in an auxiliary pressurizing operation that performs an auxiliary pressurization to recover the pressure in the pipe 501 when the pressure in the pipe 501 connected to the water discharge means 201 drops. The fire extinguishing starting pressure P2, which is smaller than the auxiliary starting pressure P1, starts the pump unit 12 in the fire extinguishing operation when the first threshold pressure, which is the auxiliary starting pressure P1, and the pressure on the secondary side of the pump unit 12 drop. The second threshold is stored. Further, the storage unit 43 stores a predetermined time until the auxiliary pressurization operation is started when the pressure detected by the pressure detector 33 is lower than the first threshold value.

Further, the storage unit 43 stores a third threshold value for determining the completion of the auxiliary pressurization operation after starting the pump unit 12 in the auxiliary pressurization operation. The third threshold value is, for example, a predetermined time during which the pressure on the secondary side of the pump unit 12 becomes a predetermined pressure after the start of the auxiliary pressurizing operation. The third threshold value may be, for example, the pressure on the secondary side of the pump unit 12 at which the auxiliary pressurization is completed.

Further, the storage unit 43 stores a threshold value for determining that water leakage has occurred in the fire extinguishing equipment 1 when a plurality of auxiliary pressurizations are performed. As a specific example, the storage unit 43 stores a fourth threshold value, which is the number of auxiliary pressurization operations of the pump unit 12 allowed per predetermined time, that is, the frequency of the auxiliary pressurization operation. The fourth threshold is for auxiliary pressurization of the pump unit 12 which may be required during a predetermined time arbitrarily set, which is assumed when water leakage does not occur on the secondary side of the pump unit 12. This is the number of auxiliary pressurization operations.

The storage unit 43 stores, for example, a control program of the pump unit 12 at the time of auxiliary pressurization and at the time of extinguishing a fire (when a fire occurs). The storage unit 43 functions as a counter memory for the counter function of the control unit 41.

Further, the storage unit 43 contains information on the pump device 1 such as the identification number, type, and position information of the pump unit 12, a warning when the pump unit 12 performs an auxiliary pressurizing operation, and a fire extinguishing operation by the pump unit 12. Information and the like of an external terminal 90 such as a personal computer or a tablet terminal provided externally for transmitting a warning when the operation is performed are stored. Here, the warning in the auxiliary pressurization operation and the warning in the fire extinguishing operation are distinctly different warnings. Further, the warning when the pump unit 12 performs the auxiliary pressurizing operation and the warning when the pump unit 12 performs the fire extinguishing operation may be given when the conditions for performing each operation are met, and each operation is started. It may be done later.

When an abnormality occurs in the pump unit 12, the notification unit 44 is formed so that the abnormality can be notified to the outside based on the information transmitted from the control unit 41. The notification unit 44 is a display unit that displays information. The notification unit 44 includes, for example, a lamp that displays information by lighting or blinking, a sound that notifies information to the outside by sound, and a display that displays information. The notification by the notification unit 44 may be the same warning content as the warning content transmitted to the external terminal 90.

The communication unit 45 is configured to be able to send and receive information to and from the outside. For example, the communication unit 45 outputs the information transmitted from the control unit 41 to the outside wirelessly or by wire. For example, the communication unit 45 transmits information to the external terminal 90. In other words, the control unit 41 transmits information to the external terminal 90 via a network such as the Internet, LAN (Local Area Network), wireless or wired cable, etc. via the communication unit 45, and transmits the information to the external terminal 90. Display it.

The terminal portion 48 has a plurality of terminals for receiving the start signal of the pump unit 12 by the fire judgment device 301. Here, the fire judgment device 301 is electrically connected to the control panel 18 via, for example, the signal line 99, but since it was not necessary to identify the fire judgment device 301 in the past, the fire judgment device 301 of the plurality of fire judgment devices 301. The signal line 99 was electrically connected to one terminal. In the present embodiment, the terminal portion 48 has a plurality of terminals in order to identify the start signal of the pump unit 12 by the fire judgment device 301, and a different fire judgment device 301 is connected to each terminal.

For example, the function of displaying information on the external terminal 90 is achieved by processing by the processor of the external terminal 90. The external terminal 90 is, for example, a display unit that displays information related to abnormal boosting and the like. Further, here, the external terminal 90 manages, for example, a first external terminal 91 that the user has at a place away from the pump device 1, an administrator other than the user, a manufacturer of the pump device 1 as a specific example, and a building. The management center and the second external terminal 92 owned by the manager who supervises or manages the pump device 1 and the fire extinguishing equipment 100 of an external organization such as a fire station or a disaster prevention center.

Further, the control unit 41 has the following functions (1) and (2).

(1) A function of performing an auxiliary pressurizing operation of the pump unit 12.

(2) A function to detect water leakage in fire extinguishing equipment 1.

Next, the functions (1) and (2) of the control unit 41 will be described.
The function of (1) is stored as an auxiliary pressurization operation when the pump unit 12 is stopped and it is determined that auxiliary pressurization is required on the secondary side of the pump unit 12, that is, the pipe 501. This is a function of driving the motor 22 according to the program stored in the unit 43.

A specific example of the function of (1) will be described below. As a specific example of the function of (1), first, the control unit 41 determines whether or not the pump unit 12 is stopped from the current value when the motor 22 is energized. Next, the control unit 41 compares the pressure detected by the pressure detector 33 with the first threshold value and the second threshold value, and determines whether or not to perform the auxiliary pressurization operation. The pressure detected by the pressure detector 33 is smaller than the first threshold value and larger than the second threshold value, and a predetermined time for starting the auxiliary pressurizing operation stored in the storage unit 43 has elapsed. In that case, the control unit 41 starts the pump unit 12 and performs the auxiliary pressurizing operation. Here, the auxiliary pressurizing operation is, for example, the lowest speed operation in which the motor 22 of the pump unit 12 is driven at the lowest frequency.

Further, the control unit 41 provides the notification unit 44 and the external terminal 90 with information and a warning that the pump unit 12 is operated under auxiliary pressurization. The information and warning of the auxiliary pressurizing operation are given only to the first external terminal 91 of the external terminals 90, or to both the first external terminal 91 and the second external terminal 92. That is, the control unit 41 performs or does not perform the communication of the information and the warning of the auxiliary pressurizing operation to the second external terminal 92 after identifying the auxiliary pressurizing operation. This is because it is possible to distinguish between the fire extinguishing operation and the auxiliary pressurizing operation when the external engine is a disaster prevention center, that is, the information of the auxiliary pressurizing operation in the external engine is the fire extinguishing operation. This is to prevent misidentification as information.

Further, the control unit 41 determines whether or not the auxiliary pressurizing operation is completed. For example, the control unit 41 counts the elapsed time after the start of the auxiliary pressurizing operation, compares the elapsed time with the third threshold value, and if the elapsed time exceeds the third threshold value, the auxiliary pressurizing operation is performed. The pump unit 12 is stopped as completed. The control unit 41 maintains the auxiliary pressurizing operation when the elapsed time is equal to or less than the third threshold value. When the third threshold value is not time but pressure, the control unit 41 compares the pressure detected by the pressure detector 33 with the third threshold value, and when the pressure is equal to or higher than the third threshold value. If the auxiliary pressurization operation is stopped and the pressure does not reach the third threshold value, the auxiliary pressurization operation may be maintained.

The control unit 41 does not extinguish the fire of the pump unit 12 even if it receives a start signal from the water flow detector 314 during the auxiliary pressurization operation. This is to prevent the fire extinguishing operation by mistake when the water flow detector 314 detects the flow of water due to the increased pressure on the secondary side of the pump unit 12 during the auxiliary pressurizing operation. When the auxiliary pressurizing operation is the lowest speed operation of the pump unit 12, this function may not be provided, and when this function is provided, the auxiliary pressurizing operation is performed on the pump unit 12. It does not have to be the lowest speed operation.

As described above, the function of (1) starts and stops the auxiliary pressurizing operation from the pressure detected by the pressure detector 33 by the control unit 41, and additionally applies to the outside via the notification unit 44 and the external terminal 90. It is a function to issue information on pressure operation.

The function (2) is a function of determining whether or not water leakage has occurred on the secondary side of the pump unit 12 from the situation of the auxiliary pressurizing operation.

A specific example of the function of (2) will be described below. As a specific example of the function of (2), first, when the control unit 41 performs the auxiliary pressurization operation for the number of times the auxiliary pressurization operation is performed by the control unit 41 and the number of times the auxiliary pressurization operation is performed for the number of times set in the fourth threshold value. Count the elapsed time (predetermined time). Then, the control unit 41 compares the number of times of the auxiliary pressurizing operation per predetermined time with the fourth threshold value. Then, when the number of times of the auxiliary pressurizing operation per predetermined time is larger than the fourth threshold value, the control unit 41 determines that water leakage has occurred on any of the secondary sides of the pump unit 12. When the control unit 41 determines that a water leak has occurred, the control unit 41 transmits information on the occurrence of the water leak to the notification unit 44 and the external terminal 90 to give a warning.

As described above, the function (2) determines that when the number of auxiliary pressurizing operations occurs a predetermined number of times within a predetermined time, the pressure on the secondary side of the pump unit 12 drops significantly and water leakage occurs. It is a function.

According to the pump device 1 used in the fire extinguishing equipment 100 configured in this way, when the pressure on the secondary side of the pump unit 12 detected by the pressure detector 33 drops to a pressure requiring auxiliary pressurization, the pump is pumped. The unit 12 is driven to perform auxiliary pressurization operation. As a result, the pump device 1 can perform auxiliary pressurization, so that the fire extinguishing equipment 100 does not need to use the auxiliary pressurizing device, and the equipment cost, running cost, and the like can be reduced. Further, the control unit 41 starts the auxiliary pressurizing operation after a predetermined time elapses, when the pressure detected by the pressure detector 33 is lower than the first threshold value and higher than the second threshold value. As a result, it is possible to monitor whether the pressure on the secondary side of the pump unit 12 drops to the second threshold value, which is a pressure value lower than the first threshold value, for a predetermined time, so that it is erroneously assisted in the event of a fire. It is possible to prevent the start of pressurized operation.

Further, the pump device 1 is able to identify the warning in the auxiliary pressurization operation and the warning in the fire extinguishing operation to the notification unit 44 and the external terminal 90, respectively, so that when the pump unit 12 is driven, the pump device 1 is used for auxiliary pressurization. It is possible to determine whether it is a drive or a drive for extinguishing a fire. Therefore, for example, when a fire is being monitored by an external engine, it is possible to prevent the external engine from accidentally issuing a start signal for the fire.

Further, in the fire extinguishing operation, the control unit 41 can reliably perform the fire extinguishing operation from continuing the fire extinguishing operation until a stop command is issued from the outside until a person determines that the fire is extinguished at the time of a fire.

Further, the control unit 41 compares the elapsed time or the pressure detected by the pressure detector 33 with the third threshold value, and either a predetermined time has elapsed or the pressure on the secondary side of the pump unit 12 becomes a predetermined pressure. If this happens, the auxiliary pressurization is stopped. Therefore, the pump device 1 can surely set the pressure on the secondary side of the pump unit 12 to a predetermined pressure. Further, since the terminal unit 48 connects different fire judgment devices 301 to the plurality of terminals, it is possible to identify which fire judgment device 301 has issued the start signal.

Further, the control unit 41 does not perform the fire extinguishing operation even if the water flow detector 314 detects the flowing water during the auxiliary pressurizing operation, so that the water flow in the pipe 501 during the auxiliary pressurizing operation. When it occurs, it is possible to suppress the misidentification of a fire.

Further, the control unit 41 can compare the frequency of the auxiliary pressurizing operation with the fourth threshold value and determine the water leakage on the secondary side of the pump unit 12. This enables early detection of water leaks in the fire extinguishing equipment 100. Further, since the status of the auxiliary pressurizing operation is transmitted to the external terminal 90, it is possible to detect the leakage of the fire extinguishing equipment 100 from the external terminal 90.

As described above, according to the fire extinguishing equipment 100 using the pump device 1 according to the first embodiment of the present invention, it is possible to perform auxiliary pressurization by the pump device 1.

The present invention is not limited to the above embodiment. The fire extinguishing system 100A according to the second embodiment of the present invention will be described with reference to FIG. Of the configurations of the fire extinguishing equipment 100A of the second embodiment, the same reference numerals are given to the configurations equivalent to the fire extinguishing equipment 100 according to the first embodiment described above, and detailed description thereof will be omitted.

The fire extinguishing equipment 100A includes an auxiliary pressurizing device 101, a water discharge means 201, a fire judgment device 301, and a water supply source 401. That is, the fire extinguishing equipment 100A is different from the fire extinguishing equipment 100 of the first embodiment described above in the configuration including the auxiliary pressurizing device 101.

In the auxiliary pressurizing device 101, when the pressure in the pipe 501 connected to the water discharge means 201 drops, the auxiliary pressurizing device 101 automatically operates before the pump device 1 starts to recover the pressure in the pipe 501. It is a pump device to make it.

The auxiliary pressurizing device 101 includes, for example, an auxiliary pump unit 111, a pressure tank 112 provided on the secondary side of the auxiliary pump unit 111, a pressure detector 113 connected to the pressure tank 112, a priming tank 114, and the like. It is equipped with a control panel 115.

The auxiliary pump unit 111 includes an auxiliary motor 121, an auxiliary pump 122 driven by the auxiliary motor 121, and a connecting pipe 123 connected to the auxiliary pump 122. The auxiliary motor 121 is electrically connected to the control panel 115. The primary side of the auxiliary pump 122 is connected to the priming tank 114, and the secondary side is connected to the connecting pipe 123. The connecting pipe 123 is connected to the pipe 501. More specifically, the connecting pipe 123 is the pipe 501 and is connected to the primary side of the water flow detector 314, which will be described later.

The pressure tank 112 is provided in the connecting pipe 123.

The pressure detector 113 detects the pressure in the pressure tank 112. The pressure detector 113 is electrically connected to the control panel 115. The pressure detector 113 transmits a signal of the detected pressure value to the control panel 115.

The priming tank 114 is a water source for the auxiliary pump unit 111.

The control panel 115 includes, for example, a storage unit 131 and a control unit 132. The storage unit 131 stores, for example, an auxiliary starting pressure for starting the auxiliary pump unit 111 and an auxiliary stopping pressure for stopping the auxiliary pump unit 111. The auxiliary starting pressure is set higher than the starting pressure of the pump unit 12 of the pump device 1. Further, the auxiliary stop pressure is set lower than the cutoff pressure of the pump device 1.

The fire extinguishing equipment 100A configured in this way, for example, when the condition for performing auxiliary pressurization is satisfied, preferentially performs auxiliary pressurization by the auxiliary pressurizing device 101, and even after a lapse of a predetermined time, the piping When the pressure of 501 does not reach the auxiliary stop pressure, the pump unit 12 of the pump device 1 performs an auxiliary pressurizing operation.

According to the fire extinguishing equipment 100A configured in this way, the auxiliary pressurization of the pipe 501 is possible in both the pump device 1 and the auxiliary pressurizing device 101, so that the redundancy in the auxiliary pressurization can be improved. That is, even if the auxiliary pressurizing device 101 stops functioning due to a failure or the like, the pump device 1 enables auxiliary pressurization, and the fire extinguishing equipment 100A can ensure high reliability. Further, even during maintenance of the auxiliary pressurizing device 101, the pressure inside the pipe 501 can be set to a desired level.

The present invention is not limited to the above-described embodiment. In the above-mentioned example, the configuration in which the sprinkler 211 is provided as the fire extinguishing equipment 100 has been described, but the sprinkler 211 is a so-called open type in which the sprinkler head 211b is provided with a closing valve and is always open even if it is open in the event of a fire. May be.

Further, in the above-described example, an example in which the automatic on-off valve 15 is provided and can be opened and closed to drain water to the drain port 15b has been described. It may be opened and closed to increase or decrease the opening degree.

Further, in the above-described example, the example in which the water flow detector 314 is provided in the pipe 501 has been described, but the water flow detector 314 may be provided on the secondary side of the pump unit 12, and may be provided in the pump device 1. ..

Further, in the above-described example, the water flow detector 314 operates a switch provided inside when water of a predetermined flow rate or flow velocity flows, and issues a start signal of the pump unit 12 to the control panel 18. An example has been described, but the present invention is not limited to this. For example, a predetermined flow rate or flow velocity is detected by a differential pressure or the like, a signal of the flow rate value is sent to the control panel 18, and the pump unit 12 is started when the threshold value of the flow rate stored in advance in the storage unit 43 is exceeded. There may be.

Further, in the above-described example, as the pressure detector 33 for detecting the pressure on the secondary side of the pump unit 12, a configuration in which a signal corresponding to the pressure is transmitted by a strain gauge or the like has been described, but a pressure value requiring detection is detected. If possible, for example, the pressure detector 33 may be a pressure switch.

That is, the present invention is not limited to the above-described embodiment, and can be variously modified at the implementation stage without departing from the gist thereof. In addition, each embodiment may be carried out in combination as appropriate, in which case the combined effect can be obtained. Further, the above-described embodiment includes various inventions, and various inventions can be extracted by a combination selected from a plurality of disclosed constituent requirements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the problem can be solved and the effect is obtained, the configuration in which the constituent requirements are deleted can be extracted as an invention.

1 ... Pump device, 11 ... Base, 12 ... Pump unit, 13 ... Discharge pipe, 13a ... Check valve, 14 ... Pressure tank, 15 ... Automatic on / off valve, 15a ... Branch pipe, 15b ... Drain port, 16 ... Temperature detection Vessel, 17 ... priming tank, 17a ... piping, 17b ... pipe, 18 ... control panel, 21 ... pump, 21a ... suction port, 21b ... discharge port, 22 ... motor, 31 ... tank, 32 ... pressure gauge, 33 ... pressure Detector, 38 ... device, 41 ... control unit, 42 ... input device, 43 ... storage unit, 44 ... notification unit, 45 ... communication unit, 46 ... control board, 46a ... board, 47 ... housing, 48 ... terminal unit , 90 ... External terminal, 91 ... First external terminal, 92 ... Second external terminal, 99 ... Signal line, 101 ... Auxiliary pressurizing device, 111 ... Auxiliary pump unit, 112 ... Pressure tank, 113 ... Pressure detector, 114 ... priming tank, 115 ... control panel, 121 ... auxiliary motor, 122 ... auxiliary pump, 123 ... connecting pipe, 131 ... storage unit, 132 ... control unit, 201 ... water discharge means, 211 ... sprinkler, 211a ... arrangement pipe, 211b ... Sprinkler head, 212 ... Fire extinguisher, 212a ... Fire extinguisher box, 212b ... Hose, 212c ... Nozzle, 213 ... Connected water pipe, 301 ... Fire judgment device, 311 ... Fire alarm, 312 ... Manual starter for fire extinguisher, 313 ... Remote Starter device, 314 ... Water flow detector, 315 ... Fire extinguisher interlocking device, 401 ... Water supply source, 501 ... Piping.

Claims (11)

A pump unit connected to a pipe that is closed at the end or midway,
A pressure detector that detects the pressure on the secondary side of the pump unit, and
The first threshold value, which is the pressure on the secondary side of the pump unit that activates the pump unit for auxiliary pressurization, and the pressure on the secondary side of the pump unit that activates the pump unit for fire extinguishing. A second threshold value smaller than the first threshold value, a storage unit that stores a predetermined time for starting the auxiliary pressurization of the pump unit, and a storage unit.
When the pressure detected by the pressure detector is smaller than the first threshold value and larger than the second threshold value after the lapse of the predetermined time, the pump unit is started to perform auxiliary pressurization operation. When the pressure detected by the pressure detector is smaller than the second threshold value, the control unit that starts the pump unit and extinguishes the fire.
A pump device equipped with. The pump device according to claim 1, wherein the control unit gives different warnings to the outside when the pump unit is operated in the auxiliary pressurization operation and when the pump unit is in the fire extinguishing operation. The pump device according to claim 1, wherein the control unit maintains the fire extinguishing operation after the fire extinguishing operation of the pump unit until a stop command is issued from the outside. The storage unit stores a third threshold value, which is a predetermined time during which the pressure on the secondary side of the pump unit becomes a predetermined pressure after the auxiliary pressurizing operation of the pump unit.
The first aspect of the present invention, wherein the control unit stops the pump unit in the auxiliary pressurizing operation when the elapsed time after the start of the auxiliary pressurizing operation of the pump unit exceeds the third threshold value. Pumping device. The storage unit stores a third threshold value, which is a pressure higher than the first threshold value and is a pressure for stopping the pump unit in the auxiliary pressurizing operation.
The pump device according to claim 1, wherein the control unit stops the pump unit in the auxiliary pressurizing operation when the pressure detected by the pressure detector becomes equal to or higher than the third threshold value. The pump device according to claim 1, wherein the control unit communicates information on the auxiliary pressurization operation to an external engine or does not perform the communication during the auxiliary pressurization operation of the pump unit. Equipped with a terminal unit that includes multiple terminals that are connected to different types of fire judgment equipment.
The pump device according to claim 1, wherein the control unit identifies signals input from the plurality of types of fire judgment devices. A water flow detector provided on the secondary side of the pump unit, which detects the flow of water and issues a start signal of the fire extinguishing operation to the control unit, is provided.
When the control unit receives the start signal from the water flow detector, the control unit performs the fire extinguishing operation of the pump unit and the start of the pump unit from the water flow detector while the auxiliary pressurization operation is performed. The pump device according to claim 1, wherein the fire extinguishing operation of the pump unit is not performed even if a signal is received. A water flow detector provided on the secondary side of the pump unit, which detects the flow of water and issues a start signal of the fire extinguishing operation to the control unit, is provided.
The pump device according to claim 1, wherein the control unit operates the pump unit at the lowest speed in the auxiliary pressurizing operation. The storage unit stores a fourth threshold value, which is the number of times of the auxiliary pressurizing operation of the pump unit allowed per predetermined time.
According to claim 1, the control unit determines that water leakage has occurred on the secondary side of the pump unit when the frequency of the auxiliary pressurizing operation of the pump unit is higher than the fourth threshold value. The pump device described. Equipped with a communication unit that communicates with external terminals
The pump device according to claim 1, wherein the status of the auxiliary pressurizing operation is transmitted to the external terminal.

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