KR101194787B1 - Engine pump system for firefighting and control method thereof - Google Patents

Abstract

PURPOSE: A fire engine pump system and a control method thereof are provided to maintain the internal pressure of a pipe at preset standard pressure by differentially controlling the speed of an engine pump. CONSTITUTION: A pressure tank unit(100) applies an operation signal by a pressure tank switch(110). A manipulation unit(300) manipulates an engine pump(200). A pipe pressure sensing unit(240) senses the internal pressure of a pipe. After the engine pump is operated by the operation signal, a control unit(600) constantly maintains the sensed internal pressure at standard pressure by controlling a rotation speed of the engine pump. [Reference numerals] (100) Pressure tank unit; (110) Pressure tank switch; (200) Engine pump; (210) Engine; (220) Pump; (221) Main engine pump; (223) Auxiliary motor pump; (240) Pipe pressure sensing unit; (250) Engine speed control unit; (300) Manipulation unit; (310) Main manipulation unit; (320) Remote manipulation unit; (330) Communication unit; (400) Engine pump operating unit; (410) Battery charging unit; (420) Power control unit; (430) Engine operating unit; (431) Starting motor operating unit; (433) Plunger pump operating unit; (435) Preheat operating unit; (600) Control unit

Description

ENGINE PUMP SYSTEM FOR FIREFIGHTING AND CONTROL METHOD THEREOF}

The present invention relates to a fire engine pump system and a control method thereof, and more particularly to a fire engine pump system and a control method thereof that can maintain a constant pressure and amount of fire water discharged to the outside through the pipe.

Fire engine pump is a pump driven by the power generated by the engine, it is used for the purpose of supplying the fire water required for extinguishing fire in the case of high lift and large capacity can be obtained compared to the conventional motor pump.

In this regard, "Fire fighting apparatus and control method thereof" is disclosed in Korean Patent No. 2005-0003139, and "Fire fighting engine pump" is disclosed in Patent Publication No. 2008-0096242.

In the conventional fire engine pump, the pressure decreases when the fire water is discharged through a fire hydrant due to a time elapsed or a fire occurs while the pressure in the pipe in which the fire water moves is maintained at the reference pressure. At this time, when the pressure inside the pipe drops, the pressure tank switch applies the ON signal to restart the engine pump and the pressure inside the pipe rises to the reference pressure. When the pressure inside the pipe rises, the pressure tank switch applies the OFF signal and the engine pump is stopped. In addition, when the pressure in the pipe drops again in response to the discharge of the fire water, the engine pump is driven in such a manner as to be restarted.

As described above, the conventional fire engine pump reduces the pressure inside the pipe when water is discharged through a fire hydrant in the event of a fire. The pressure tank switch applies the operation signal only when the pressure inside the pipe is the reference pressure and the minimum set pressure. The engine pump will not run in the pressure range between pressure and minimum set pressure. Accordingly, the conventional fire engine pump has a problem that the pressure and amount of fire water discharged through the fire hydrant are not constant. In order to solve this problem, once the engine is driven once, the engine does not stop even if the pressure of the pipe rises above the reference pressure.

In addition, in the case of the conventional fire engine pump, when the OFF signal of the pressure tank switch is not properly operated due to a malfunction or damage to the machine, the engine pump continues to operate even if the reference pressure is reached, and the pressure inside the pipe rises above the reference pressure, causing a load on the pipe. There was a problem that the noise is increased and the power wasted.

On the other hand, the conventional fire engine pump operation unit for operation is installed together on the basement or roof of the building where the fire engine pump is located. Accordingly, it is not easy to recognize the abnormality of the fire engine pump in the management room of the building, and there is a problem that management is easily neglected due to the distance. As a result, the fire engine pump does not operate properly when an actual fire occurs, thus causing difficulties in extinguishing the fire.

An object of the present invention is to solve the above problems, to provide a fire engine engine system and a control method thereof that can differentially control the rotational speed of the engine pump in accordance with the pressure change in the pipe.

Another object of the present invention is to provide a fire engine engine system and a control method thereof, by which the rotational speed of the engine is differentially controlled to maintain a constant amount and pressure of fire water discharged in a fire.

Still another object of the present invention is to provide a fire fighting engine pump system and a control method thereof having a display window for displaying the internal pressure of a pipe so that the internal pressure of the pipe can be easily recognized from the outside.

Still another object of the present invention is to provide an engine pump system for fire protection and a control method thereof, by which the engine pump is automatically stopped when the reference pressure is maintained for a certain time, thereby preventing overloading in the pipe.

Still another object of the present invention is to provide a fire fighting engine pump system and a control method thereof for facilitating management and maintenance by allowing a manager to easily recognize an abnormality of a fire fighting engine pump spaced at a distance.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

The object of the present invention can be achieved by a fire engine pump system. Fire engine engine system of the present invention, the pressure tank unit for applying the operation signal by the pressure tank switch; an engine pump having a pump driven by the engine, connected through the hydrant and piping to supply the fireman; An operation unit for operating the engine pump and displaying a driving state of the engine pump; A pipe pressure detecting unit provided inside the pipe to detect internal pressure of the pipe; And a controller configured to control the rotation speed of the engine pump so that the current internal pressure of the pipe detected by the pipe pressure sensing unit is maintained at a reference pressure after the engine pump is driven by the operation signal of the pressure tank switch. It is characterized by.

According to an embodiment, the controller controls the engine pump to be driven at a low speed when the current difference between the internal pipe pressure and the reference pressure is within the reference range, and the difference between the internal pipe pressure and the reference pressure is within the reference range. If exceeded, the engine pump is controlled to be driven at high speed.

According to an embodiment, the engine pump further includes an engine speed control unit coupled to the plunger of the engine to adjust the rotation speed of the engine at a low speed and a high speed, and the control unit controls the engine speed control unit to control the pipe. Ensure that the internal pressure is maintained at the reference pressure.

According to an embodiment, the control unit controls the engine speed control unit so that the engine pump is driven at high speed when the ON operation signal is applied from the pressure tank switch, and when the OFF operation signal is applied, the engine pump is driven at low speed. Controlling the engine speed control unit; controlling the engine pump to stop when the start signal is not applied again within a reference time while the engine pump is running at a low speed; and when the start signal is applied again within a reference time, the engine pump The engine speed control unit is controlled to be driven at a high speed.

According to one embodiment, the operation unit, and a casting working plate provided on one side of the engine pump; A remote control panel disposed to be spaced apart from the casting control panel, wherein the casting control panel and the remote control panel each include: a rotation speed display window for displaying a current engine speed of the engine pump; A voltage display window for displaying a current voltage of the battery; And a pipe pressure display window displaying the current pipe internal pressure detected by the pipe pressure detecting unit.

On the other hand, an object of the present invention can be achieved by a control method of a fire engine pump system. The control method of the fire engine pump system of the present invention includes the steps of applying power; Driving the engine pump at a low speed through the engine speed control unit; Driving the engine pump at a high speed through the engine speed control unit when an ON operation signal is applied from a pressure tank switch; Driving the engine pump at a low speed when an internal pressure of a pipe reaches a reference pressure; Differentially driving the speed of the engine pump so that the internal pipe pressure reaches the reference pressure when the current internal pipe pressure drops between the set minimum pressure and the reference pressure according to the discharge of the fire water; When the OFF operation signal is applied from the pressure tank switch, driving the engine pump at a low speed; Stopping the driving of the engine pump if the ON operation signal is not applied again from the pressure tank switch within a reference time, and driving the engine pump at high speed if the ON operation signal is applied again within the reference time.

Fire engine pump system according to the present invention because the speed of the engine pump is differentially controlled so that the internal pressure of the pipe is maintained at a predetermined reference pressure, the discharge pressure and the amount of fire water is kept constant.

In particular, the engine speed can be differentially controlled according to the difference between the current pipe internal pressure and the reference pressure to reach the reference pressure within a short time.

In addition, the fire engine pump system according to the present invention is not driven directly at the highest speed in the state in which the engine pump is stopped when the operation signal is applied in the state of starting, because it is driven at high speed in the state of rotating at low speed at the highest speed The driving time is short and the load on the engine is less. In addition, even if the operation signal is repeatedly applied and stopped during fire suppression, the engine is driven at a high speed while the engine pump is driven at a low speed instead of repeatedly stopping and starting the engine. It will be less.

Accordingly, the engine pump and pipes and the driving part connected to the engine pump can be used stably for a long time, and a sudden malfunction and inoperable state can be prevented during fire suppression.

In addition, since the engine pump is driven at a low speed during the test run, the noise generated is relatively low, and the operator can feel less fear of the noise. Therefore, the engine pump can be frequently checked and kept in a flexible state, so that an optimum state can be coped with in the event of a fire.

In addition, since the engine pump is driven at a low speed even when the pressure tank unit is malfunctioning or when the operation panel is malfunctioning, it is possible to reduce additional damage and financial loss by not burdening the engine, the pump, the pipe, and the fire hydrant.

In addition, if the operation signal is not applied within the reference time while the engine pump is running at a low speed, the engine pump is automatically stopped. Therefore, the operator can go to the operation panel and operate the operation button to eliminate the trouble of manually stopping the engine pump. It is possible to prevent further loss due to malfunction.

In addition, since the remote control panel is provided with an easy access of the manager in addition to the casting operation panel disposed with the engine pump, the administrator can easily recognize the current state of the engine pump.

1 is a schematic diagram schematically showing the configuration of a fire engine pump system according to the present invention;
2 is a block diagram showing the configuration of a fire engine pump system according to the present invention;
Figure 3 is a schematic diagram schematically showing the configuration of the engine speed control unit of the engine pump system for fire according to the present invention,
Figure 4 is a perspective view showing the configuration of the casting plate of the operation unit of the engine pump for fire according to the present invention,
5 is a perspective view showing the configuration of a remote control panel of the operation unit of the engine pump for fire according to the present invention,
6 is a flowchart schematically illustrating a control process of a fire engine pump system according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

1 is a block diagram schematically showing the configuration of a fire engine control device 1 according to the present invention.

As shown, the fire engine control device 1 according to the present invention is an engine pump driven according to the pressure tank unit 100 and the control signal of the control unit 600 for applying the operation signal for water supply during fire suppression. 200, an operation unit 300 for receiving driving conditions for driving the engine pump 200 and displaying driving conditions, and an engine pump driving unit 400 for driving the engine pump 200 under the control of the controller 600. ), The fire hydrant 500 for discharging the fire water, the engine tank 200 to be driven at a differential rotational speed depending on whether the operation signal of the pressure tank unit 100 is applied and the detection result of the pipe pressure detecting unit 240. The control unit 600 is included.

The pressure tank unit 100 applies an operation signal to the control unit 600 when a fire occurs to allow the engine pump 200 to be driven. One side of the pressure tank unit 100 is provided with a pressure tank switch 110 for applying the ON / OFF operation signal, the ON / OFF operation signal is applied by an automatic method or a manual method. The pressure tank part 100 receives the fire water from the pump 220 and fills the interior according to the driving of the engine pump 200 after the ON operation signal is applied. Fire water stored in the pressure tank 100 is supplied to the fire hydrant 500 along the pipe 230, and then discharged to the outside.

The engine pump 200 is driven by the control of the control unit 600 and allows the fire water to be supplied to the fire hydrant 500 through the pressure tank unit 100. The engine pump 200 is controlled by the ON / OFF operation signal of the pressure tank switch 110, and the rotational speed is differentially controlled according to the detection result of the pipe pressure detecting unit 240.

The engine pump 200 includes an engine 210 driven by the supply of fuel, and a pump 220 operated using the driving force of the engine 210. In addition, the engine pump 200 is provided with a pipe 230 for connecting the pump 220, the pressure tank 100, and the hydrant 500, and a pipe pressure sensing provided inside the pipe 230 to detect internal pressure of the pipe. The engine 240 is coupled to the engine 210 and the engine speed control unit 250 to control the rotational speed of the engine 210 by the control of the control unit 600.

The engine pump 200 is driven by the engine pump driver 400. The engine 210 is started by the starting motor driver 431, and the fuel is supplied to the plunger pump (not shown) by the plunger pump driver 433. The pump 220 may include a plurality of main engine pumps 221 and auxiliary motor pumps 223 according to the size and number of floors of the building to be installed.

The pipe 230 connects the pump 220, the pressure tank unit 100, and the fire hydrant 500 so that the fire water moves to the fire hydrant 500. The pipe 230 has a pressure formed therein according to the rotational speed of the engine 210, and the firefighter moves at the corresponding pressure. The internal pressure of the pipe is high pressure when the rotational speed of the engine 210 is high, and low pressure is formed when the rotational speed of the engine 210 is slow.

Pipe pressure detecting unit 240 is coupled to the inside of the pipe 230 detects the internal pressure of the pipe to move the firefighter. Pipe pressure detecting unit 240 may be implemented as a pressure sensor. The pipe internal pressure detected by the pipe pressure detecting unit 240 is transmitted to the control unit 600.

The engine speed controller 250 adjusts the rotation speed of the engine 210 under the control of the controller 600. The engine speed controller 250 adjusts the rotation speed of the engine 210 at a low speed or a high speed. 3 is a schematic diagram schematically showing the configuration of the engine speed control unit 250. As shown, the engine speed control unit 250 is coupled to the motor 251, the rotary shaft 252 coupled to the motor 241, and the rotary shaft 252 are driven under the control of the controller 600 Bracket 253 is linearly moved left and right according to the rotation of the rotary shaft 252, and one end is coupled to the bracket 253 and the other end is adjusted to adjust the opening state of the plunger pump (not shown) of the engine 210 And a pulling member 254 coupled to the lever (not shown).

The motor 251 is provided in the form of a small DC motor and rotates forward and backward according to a control signal of the controller 600. The bracket 253 is coupled on the rotation shaft 252 to move left and right on the rotation shaft 252 according to the rotation of the rotation shaft 252 when the motor 251 is driven.

Pulling member 254 is provided in the form of a string. Since the pulling member 254 has one end coupled to the bracket 253, the pressing force for pressing the control lever (not shown) is changed according to the position of the bracket 253.

When the bracket 253 is located on the right side of the rotation shaft 252 according to the forward rotation of the motor 251, the tension of the pulling member 254 is loosened, and thus the adjustment lever (not shown) closes the plunger pump (not shown). Will be placed in a state. Accordingly, since the opening degree of the plunger pump (not shown) is small, the amount of fuel supplied to the plunger pump (not shown) is small, so that the engine 210 rotates at a low speed.

On the other hand, when the motor 251 is reversely rotated and the bracket 253 is positioned on the left side of the rotation shaft 252, the pulling member 254 is kept taut and pulled in the direction in which the control lever (not shown) is opened to plunger pump. (Not shown) will remain open. Accordingly, since a large amount of fuel is supplied to the plunger pump (not shown), the engine 210 rotates at a high speed.

When the engine rotates at a high speed, the rotation speed of the engine 210 becomes a value set by the operator by the rotation speed adjustment switch 313.

Here, the rotation speed of the engine 210 is reflected as the rotation speed of the impeller (not shown) inside the pump 220, and if the rotation speed of the impeller (not shown) increases, the amount of fire water discharged through the impeller (not shown) Will increase. Therefore, the controller 600 adjusts the rotation speed of the engine 210 to adjust the rotation speed of the engine pump 200. As a result, the discharge pressure and the discharge rate of the firefighter can be adjusted.

Meanwhile, instead of the motor 251, a solenoid or a compressor having a similar function may be used. In this case, the minute structural change is obvious to those skilled in the art, and thus description thereof is omitted.

The operation unit 300 receives a condition related to driving of the engine pump 200 or displays a driving state of the current engine pump 200. The operation unit 300 includes a casting control panel 310 provided at one side of the engine pump 200, a remote control panel 320 provided at a long distance from the casting control panel 310, and a casting control panel 310 and a remote control panel ( And a communication unit 330 connecting the 320 to each other.

4 is a perspective view showing the external configuration of the casting control panel 310, Figure 5 is a perspective view showing the external configuration of the remote control panel 320.

Casting plate 310 is provided in the shape of a housing, as shown, is installed with the engine pump 200 or is fixed to the wall surface, such as a basement or rooftop on which the engine pump 200 is installed. The casting board 310 receives a signal for operating the engine pump 200 and the engine pump driving unit 400.

The plate surface of the casting work board 310 is provided with a plurality of operation switches and a display lamp for displaying the current state. In the lower region of the casting operation machine 310, a main engine pump switch 311 and an auxiliary motor pump switch 312 for driving the engine pump 200 are provided. By operating the main engine pump switch 311, the operator can switch between manual, automatic, and stop mode. In case of manual operation, the main engine pump 221 is started after about 6 to 8 seconds. In the case of automatic operation, the main engine pump 221 is started by the signal of the pressure tank switch 110. When operating in the stop operation of the main engine pump 221 is stopped.

By operating the sub-motor pump switch 312, the operator can operate the drive mode of the sub-motor pump 223 or the charge pump (not shown). When operated manually, the auxiliary motor pump 223 is immediately driven, and when automatically placed, the auxiliary motor pump (not shown) is driven by the signal of the pressure tank switch 110, and when operated in a stop, the auxiliary motor pump 223 The operation is stopped.

On the other hand, the upper end of the main engine pump switch 311 and the auxiliary motor pump switch 312 is provided with a pump display lamp for displaying the respective current operation mode. By this, the operator can recognize whether the main engine pump 221 and the auxiliary electric motor pump 223 are operated by the automatic mode or the manual mode.

One side of the auxiliary motor pump switch 312 is provided with a rotation speed adjustment switch (313). The rotation speed adjustment switch 313 is provided to adjust the engine 210 to a desired rotation speed while checking the numerical value displayed on the rotation speed display window 315. The engine speed setting by the rotation speed adjustment switch 313 is performed when the main engine pump switch 311 is positioned in the manual state, and the engine speed display window 315 in the state where the main engine pump switch 311 is automatic. The numerical value displayed at) indicates the number of revolutions of the actual engine 210 rotating by the set numerical value. The engine 210 rotates at the maximum speed by the rotation speed set by the rotation speed adjustment switch 313.

A plurality of display lamps 314 are provided in an upper region of the main engine pump switch 311. The display lamp 314 may include a start failure lamp, a semi-automatic warning lamp, a battery charging lamp, an oil pressure warning lamp, an overtemperature warning lamp, an AC 220V indicator lamp, and the like. The start failure lamp is turned on when the engine does not start within 10 restarts after attempting to start the main engine pump 221. At this time, the alarm sounds within 10 seconds to notify the operator of the start failure. The semi-automatic warning lamp is a warning light that indicates that the main engine pump 221 is not automatically stopped when the engine is automatically started when in standby.

The battery charging lamp is turned on when the battery is being charged. The oil pressure warning lamp indicates that the engine oil is in a low pressure state, and the over temperature warning lamp indicates that the coolant in the main engine pump 221 is in an over temperature state. The AC 220V indicator indicates that 220V AC power is currently supplied to the engine panel.

In the upper region of the casting board 310, a rotation speed display window 315, a voltage display window 316, and a pipe pressure display window 317 are provided. The rotation speed display window 315 displays the current engine speed of the engine pump 200 numerically. The voltage display window 316 displays the current voltage of the battery. The pipe pressure display window 317 displays the current pipe internal pressure detected by the pipe pressure detecting unit 240.

5 is a perspective view illustrating an external configuration of the remote control panel 320. The remote control panel 320 is formed in an enclosure form as shown. The remote control panel 320 is disposed where the worker resides or where the worker has easy access, so that the worker can recognize the current state of the engine pump 200 in real time. In addition, even if the operator does not go directly to the place where the engine pump 200 is located, it provides convenience for operating the engine pump 200.

The remote control panel 320 is arranged in the same configuration as the above-described casting control panel 310 to enable the operator to drive the main engine pump (not shown) and the auxiliary electric motor pump (not shown) at a long distance. In addition, display lamps 324a, 324b, 324c, and 324d are provided to display in real time whether there is an abnormality or current state of the current engine pump 200.

In addition, the remote control panel 320 is provided with a voltage display window 326 to know the current state of the battery as a number. In this case, when the battery is in a low voltage state that is lower than the reference value, the remote control panel 320 generates an alarm so that the operator can recognize that the low voltage state.

On one side of the voltage display window 326 is a rotation speed display window 326 for displaying the rotational speed of the engine 210, and a pipe pressure display window 327 for displaying the internal pressure of the pipe.

In addition, the remote control panel 320 generates a warning sound when the power supply to the casting control panel 310 is cut off or an abnormality occurs in an internal terminal part (not shown) inside the casting control panel 310 to immediately recognize the presence of abnormality to the operator. Let's do it. As a result, the operator can immediately repair the engine pump 200 or the casting work plate 310, so that the management capability of the fire engine control system 1 can be improved.

The communication unit 330 interlocks the casting control panel 310 and the remote control panel 320 so that a control signal is transmitted. The communication unit 330 may be implemented by an internal dedicated line or may be implemented by wireless communication or wired communication.

The engine pump driver 400 drives the engine pump 200 under the control of the controller 600. The engine pump driver 400 may include a battery charger 410 for charging a battery (not shown) for supplying power for driving the engine 210, an engine driver 420 for driving the engine 210, and And a power intermittent part 430 for intermittent power supply to the engine driver 420 and the pump 220.

The battery charger 410 is provided in a trans method. The engine driver 420 is integrally provided with a starting motor driver 431 for starting, a plunger pump driver 433 for fuel charging, and a preheat driver 435 for preheating the engine 210. The engine driver 430 is provided with a relay (not shown) having a sufficient current range. Accordingly, the engine driver 430 may be stably operated regardless of the power capacity of the engine 210.

The control unit 600 controls the engine speed control unit 250 according to whether the operation signal is applied according to the operation of the pressure tank switch 110 of the pressure tank unit 100 and the pipe pressure detected from the pipe pressure detection unit 240. The engine pump 200 is differentially driven at a low or high speed. By the differential engine 210 speed control of the control unit 600, the internal pressure of the pipe is kept constant so that a certain amount of fire water can be supplied to the fire hydrant 500 at a predetermined pressure.

The control unit 600 controls the engine pump driving unit 400 and the engine speed control unit 250 so that the engine 210 is driven at a low speed when the operator starts the engine pump 200 through the operation unit 300. That is, the controller 600 prepares the engine 210 to operate at a low speed and to operate at a high speed even before the operation signal is applied from the pressure tank switch 110.

In addition, the controller 600 controls the engine speed controller 250 so that the engine 210 is driven at a low speed without being stopped when an off operation signal is applied while the engine 210 is driven at a high speed. At this time, the control unit 600 is the engine pump driving unit 400 and the power interrupter 430 so that the engine 210 is automatically stopped if the ON operation signal is not applied within the reference time while the engine 210 is being driven at a low speed. To control. On the other hand, when the ON operation signal is applied again within the reference time, the engine 210 controls the engine speed control unit 250 to be driven again at high speed.

Here, the reference time is provided so that the operator can set the 5 minutes or 10 minutes.

On the other hand, the controller 600 controls the engine speed control unit 250 so that the internal pressure of the pipe always maintains the reference pressure based on the current internal pressure of the pipe detected by the pipe pressure detecting unit 240. The controller 600 controls the engine speed controller 250 to maintain the pipe internal pressure close to the reference pressure set by default. The reference pressure may be set by the manager in consideration of the size and the number of floors of the place where the engine pump 200 is installed, the diameter and the thickness of the pipe 230, and the like.

The controller 600 drives the engine 210 at the highest rotational speed to quickly reach the reference pressure when the ON operation signal is applied from the pressure tank switch 110 in the standby state maintained at the initial low speed after the power is applied. . The pipe pressure detector 240 transmits the current pipe internal pressure in real time, and the controller 600 controls the engine speed controller 250 to drive the engine 210 at a low speed when the transmitted current pipe internal pressure reaches the reference pressure. ).

When fire water is discharged through the hydrant, the internal pressure of the pipe is lowered again. When the pipe internal pressure transmitted from the pipe pressure detecting unit 240 is lowered to a range between the preset minimum pressure and the reference pressure, the controller 600 differentially adjusts the speed of the engine 210 so as to rise to the reference pressure. do. The controller 600 differentially controls the engine rotation speed according to the pressure difference between the current pipe internal pressure and the reference pressure.

For example, if the set reference pressure is 6KPa and the set minimum pressure is 4KPa, the controller 600 differentially controls the rotational speed of the engine 210 to maintain the pipe internal pressure at 6KPa. When the internal pressure of the pipe is lowered to 5KPa due to the discharge of fire water, the engine 210 rotates to increase to 6KPa.

At this time, when the internal pressure of the pipe is higher than 5KPa and lower than 6KPa, the pressure difference is small, so that the engine 210 is driven at a low speed. When the internal pressure of the pipe is higher than 4KPa and lower than 5KPa, the engine 210 is driven at a high speed.

The controller 600 controls the engine 210 to be driven at a low speed when the pressure difference between the current pipe internal pressure and the reference pressure is within the reference range, and controls to be driven at a high speed when the pressure difference exceeds the reference range. In the above-described example, if the pressure difference is within 1 KPa, control is performed at low speed, and if the pressure difference is more than 1 KPa, control is performed at high speed.

Here, the driving method of controlling the rotational speed of the engine 210 according to the two pressure ranges is only one example, and the rotational speed of the engine 210 is sequentially different by dividing the section three or more sections according to the reference pressure and the set minimum pressure. Can be controlled.

When the rotational speed of the engine 210 is differentially adjusted, the internal pressure of the pipe is always kept close to the reference pressure, so that the amount and pressure of the fire water discharged through the fire hydrant 500 can be kept constant.

Here, the maximum rotation speed of the engine 210 can be adjusted by the operator through the rotation speed adjustment switch 313, the rotation speed corresponding to the low and medium speed may be set as the initial default or input from the operator.

The control process of the engine pump 200 of the fire engine pump system 1 according to the present invention having such a configuration will be described with reference to FIG. 6.

The operator applies power through the operation unit 300. At this time, when the operation signal is not applied from the pressure tank switch 110 (S110), the control unit 600 controls the engine speed control unit 250 to run the engine 210 of the engine pump 200 at a low speed. (S120).

To this end, the control unit 600 rotates the motor 251 in the forward direction so that the bracket 253 moves in the direction in which the pulling member 254 is loosened along the rotation shaft 252, and the pulling member 254 is an adjustment lever (not shown). As the pressing force for pressurizing the pressure becomes weaker, the amount of fuel supplied to the engine 210 through the plunger pump (not shown) is reduced. Accordingly, the engine 210 runs at low speed.

Here, the controller 600 controls the engine pump 200 to run at low speed in both cases in which the engine pump 200 is selected to be driven in the automatic mode or the manual mode.

When the operator operates the pressure tank switch 110 while the engine 210 of the engine pump 200 is operated at a low speed and an ON operation signal is applied (S130), the controller 600 rotates the engine pump 200 at maximum. The engine pump 200 and the engine speed control unit 250 are controlled to run at a high speed of the water channel (S140).

To this end, the control unit 600 rotates the motor 251 in a reverse direction so that the bracket 253 is moved in the direction in which the pulling member 254 is pulled along the rotation shaft 252, and the pulling member 254 is an adjustment lever (not shown). Pressing force to pressurize) is increased so that the plunger pump (not shown) is opened. Accordingly, the amount of fuel supplied to the engine 210 increases, so that the engine 210 runs at high speed at the maximum speed.

At this time, the pipe pressure detecting unit 240 provided inside the pipe 230 detects the internal pressure of the pipe, and the control unit 600 approaches the internal pressure of the pipe transmitted from the pipe pressure detecting unit 240 to the set reference pressure. If (S150), the engine 210 controls the engine speed control unit 250 to run at a low speed (S160). Here, when the detected internal pressure of the pipe does not reach the set reference pressure, the engine 210 continues to run at high speed (S140).

Pipe pressure detecting unit 240 continuously detects the internal pressure of the pipe (S170), when the internal pressure of the pipe is reduced due to the discharge of the fire water and falls between the set minimum pressure and the reference pressure (S180), the control unit 600 The engine speed is adjusted so that the internal pressure of the pipe reaches the reference pressure in a short time (S190). At this time, the control unit 600 differentially controls the engine 210 rotational speed at a low or high speed in accordance with the pressure difference between the current pipe internal pressure and the reference pressure.

When the internal pressure of the pipe reaches the reference pressure again under the control of the controller 600, the controller 600 causes the engine 210 to run at a low speed again (S200). In this state, when the internal pressure of the pipe decreases again, the controller 600 repeats the above-described steps.

On the other hand, the controller 600 determines whether the ON operation signal is applied for a predetermined time when the engine is running at a low speed (S210). When the ON operation signal is reapplied within a predetermined time, the engine 210 is again driven at the maximum rotation speed to reach the reference pressure (S140).

At this time, if the ON operation signal is not applied within a predetermined time, the controller 600 controls the engine pump driver 400 to stop the driving of the engine 210 (S220).

 As described above, the fire engine control device according to the present invention is not driven directly at the highest speed when the engine pump is stopped when the operation signal is applied while the engine is stopped, and is driven at a high speed while being rotated at a low speed. This results in a shorter running time at full speed and less load on the engine. In addition, since the engine pump is driven at a high speed while the engine pump is driven at a low speed during fire suppression, the damage of the engine pump and the engine pump driver is reduced.

Accordingly, the engine pump and pipes and the driving part connected to the engine pump can be used stably for a long time, and a sudden malfunction and inoperable state can be prevented during fire suppression.

In addition, since the engine pump is driven at a low speed during the test run, the noise generated is relatively low, and the operator can feel less fear of the noise. Therefore, the engine pump can be frequently checked and kept in a flexible state, so that an optimum state can be coped with in the event of a fire.

In addition, since the engine pump is driven at a low speed even when the pressure tank is malfunctioning or when the operation panel is malfunctioning, additional damage and financial loss can be reduced by not burdening the engine, the pump, and the sprinkler head.

Fire engine pump system according to the present invention because the speed of the engine pump is differentially controlled so that the internal pressure of the pipe is maintained at a predetermined reference pressure, the discharge pressure and the amount of fire water is kept constant.

In particular, the engine speed can be differentially controlled according to the difference between the current pipe internal pressure and the reference pressure to reach the reference pressure within a short time.

In addition, the fire engine pump system according to the present invention is not driven directly at the highest speed in the state in which the engine pump is stopped when the operation signal is applied in the state of starting, because it is driven at high speed in the state of rotating at low speed at the highest speed The driving time is short and the load on the engine is less. In addition, since the engine pump is driven at a high speed while the engine pump is driven at a low speed during fire suppression, the damage of the engine pump and the engine pump driver is reduced.

Accordingly, the engine pump and pipes and the driving part connected to the engine pump can be used stably for a long time, and a sudden malfunction and inoperable state can be prevented during fire suppression.

In addition, since the engine pump is driven at a low speed during the test run, the noise generated is relatively low, and the operator can feel less fear of the noise. Therefore, the engine pump can be frequently checked and kept in a flexible state, so that an optimum state can be coped with in the event of a fire.

In addition, since the engine pump is driven at a low speed even when the pressure tank is malfunctioning or when the operation panel is malfunctioning, it is possible to reduce additional damage and financial loss by not burdening the engine, the pump and the fire hydrant.

In addition, if the operation signal is not applied within the reference time while the engine pump is running at a low speed, the engine pump is automatically stopped. Therefore, the operator can go to the operation panel and operate the operation button to eliminate the trouble of manually stopping the engine pump. have.

In addition, since the remote control panel is provided with an easy access of the manager in addition to the casting operation panel disposed with the engine pump, the administrator can easily recognize the current state of the engine pump.

The embodiment of the fire engine pump system and the control method thereof according to the present invention described above are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. You can see that. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: Fire engine pump system 100: Pressure tank
110: pressure tank switch 200: engine pump
210: engine 220: pump
221: main engine pump 223: auxiliary motor pump
230: Pipe 240: Pipe pressure sensing unit
250: engine speed control unit 251: motor
252: axis of rotation 253: bracket
254: pulling member 300: operation unit
310: casting operation 311: main engine pump switch
312: auxiliary pump switch 313: rotation speed adjustment switch
314: display lamp 315: rotation speed display window
316: voltage display window 317: pipe pressure display window
320: remote control device 321: main engine pump switch
322: auxiliary pump switch 324: display lamp
325: rotation speed display window 326: voltage display window
327: Pipe pressure display window 400: Engine pump driving part
410: battery charging unit 420: engine driving unit
430: power control unit 500: fire hydrant
600:

Claims (6)

A pressure tank unit for applying a movable signal by the pressure tank switch;
An engine pump driven by the engine and having a pump connected to the fire hydrant and the pipe to supply the fireman;
An operation unit for operating the engine pump and displaying a driving state of the engine pump;
A pipe pressure detecting unit provided inside the pipe to detect internal pressure of the pipe;
And a controller configured to control the rotational speed of the engine pump so that the current internal pressure of the pipe detected by the pipe pressure sensing unit is maintained at a reference pressure after the engine pump is driven by the operation signal of the pressure tank switch. ,
The control unit,
The engine pump is controlled to be driven at a low speed when the current difference between the internal pipe pressure and the reference pressure is within the reference range, and the engine pump is driven at high speed when the difference between the internal pipe pressure and the reference pressure exceeds the reference range. To control the low speed and high speed engine pump system, characterized in that the speed within the range set as the initial default.
delete The method of claim 1,
The engine pump further includes an engine speed control unit coupled to the plunger of the engine to adjust the rotational speed of the engine at a low speed and a high speed,
The control unit is a fire engine pump system, characterized in that for controlling the engine speed control unit to maintain the internal pressure of the pipe at the reference pressure.
The method of claim 3,
The controller controls the engine speed control unit so that the engine pump is driven at high speed when an ON operation signal is applied from the pressure tank switch, and controls the engine speed control unit so that the engine pump is driven at a low speed when an OFF operation signal is applied. The engine pump is controlled to be stopped if the start signal is not applied again within a reference time while the engine pump is running at a low speed, and the engine pump is driven at a high speed when the start signal is applied again within a reference time. Fire engine pump system, characterized in that for controlling the engine speed control.
The method of claim 4, wherein
The operation unit,
A casting mill provided on one side of the engine pump;
It includes a remote control panel disposed to be spaced apart from the casting operation panel,
The casting operation panel and the remote operation panel, respectively,
A rotation speed display window for displaying a current engine speed of the engine pump;
A voltage display window for displaying a current voltage of the battery;
Fire engine pump system comprising a pipe pressure display window for displaying the current internal pressure of the pipe detected by the pipe pressure detecting unit.
In the control method of the engine pump system for fire fighting,
Applying power;
Driving the engine pump at a low speed through the engine speed control unit;
Driving the engine pump at a high speed through the engine speed control unit when an ON operation signal is applied from a pressure tank switch;
Driving the engine pump at a low speed when an internal pressure of a pipe reaches a reference pressure;
Differentially driving the speed of the engine pump so that the internal pipe pressure reaches the reference pressure when the current internal pipe pressure drops between the set minimum pressure and the reference pressure according to the discharge of the fire water;
When the OFF operation signal is applied from the pressure tank switch, driving the engine pump at a low speed;
Stopping the driving of the engine pump if the ON operation signal is not applied again from the pressure tank switch within a reference time, and driving the engine pump at high speed if the ON operation signal is applied again within the reference time,
And the high speed and the low speed are speeds within a range set to an initial default.

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