KR20220033623A - Supply system of firefighting water - Google Patents

Abstract

The present invention relates to a fire fighting water supply system, comprising: a fluid supply unit (20); a foam supply unit (30); a control unit (40); and a drive unit (50). An objective of the present invention is to provide the fire fighting water supply system for re-driving a main pump.

Description

Firefighting water supply system {Supply system of firefighting water}

The present invention relates to a water supply system for fire fighting, in which a main pump is driven by a controller that senses a discharge pressure of a fluid and controls a first electromagnetic clutch and an engine, and is driven by a drive pulley of a fluid supply unit and a driven pulley of a foam supply unit It relates to a water supply system for fire extinguishing in which the supply volume ratio of the fluid and the foam agent is kept constant, and the fluid and the foam agent are stably supplied.

Fire extinguishing equipment is a machine/equipment and equipment that prevents or suppresses the spread of fire by installing it in a building by an automatic or manual method using water or a fire extinguishing agent. In the event of a fire, the firefighting equipment installed in the building can quickly extinguish the initial fire in the building before the fire engine arrives at the scene of the fire.

Korean Patent Application Laid-Open No. 10-2016-0053494 discloses a drug mixing device and method that enable accurate drug mixing regardless of flow rate and pressure fluctuations by configuring a drug mixing method in a flow rate proportional manner.

In the conventional fire water supply system as described above, a water wheel that rotates as the fluid introduced through an inlet formed on one side passes, and the rotational energy of the water wheel transmitted through a gear connection shaft connected to the rotation shaft of the water wheel is a straight line. The gear box that converts the reciprocating kinetic energy and the piston reciprocates with the linear reciprocating kinetic energy converted through the gear box to discharge the drug to be mixed with the fluid according to a predetermined mixing ratio to the drug mixing line connected to the fluid outlet side of the water wheel It provides a medicament mixing device characterized in that it comprises a medicament pump comprising at least one medicament pump cylinder.

However, in the conventional fire water supply system as described above, when the discharge pressure of the fire water drops below the set pressure of the fire water, the main pump does not operate properly.

In addition, in the conventional fire extinguishing water supply system, the supply volume ratio of the fire extinguishing water and the foam stock solution is not kept constant, so there is a problem in that the fire extinguishing water including the foam agent is not stably supplied.

KR 100653555 B1 KR 101726215 B1

The present invention has been devised to solve the above problems, and an object of the present invention is to increase the amount of fluid discharged when the main pump is driven, change the diameter of the inlet and outlet, and blockage of the outlet by foreign substances. When the negative pressure sensor detects a discharge pressure of the fluid greater than or equal to the fluid limit pressure, the controller turns off the first electromagnetic clutch to cut off the driving power to the main pump, thereby stopping the driving of the main pump, and the discharge An object of the present invention is to provide a fire-fighting water supply system for re-driving the main pump when the discharge pressure of the fluid less than the limit pressure is sensed by the negative pressure sensor.

In addition, an object of the present invention is to reduce the engine speed by transmitting a speed reduction signal to the engine speed control device by the controller when the discharge pressure of the fluid greater than the set pressure of the fluid is sensed by the pressure sensor of the discharge unit. , when the discharge pressure of the fluid falls below the set pressure of the fluid, a rotation speed increase signal is transmitted to the engine rotation speed control device to increase the rotation speed of the engine, thereby maintaining a constant discharge pressure of the fluid It is to provide a fire extinguishing water supply system.

In addition, an object of the present invention is to provide a fire extinguishing water supply system in which the supply volume ratio of the fluid and the foam agent is kept constant by the driving pulley of the fluid supply part and the driven pulley of the foam supply part, and the fluid and the foam agent are stably supplied. .

In order to solve the above technical problems, the fire extinguishing water supply system according to the present invention provides a fluid supply unit 20 through which a fluid is introduced and discharged, and a foam that supplies a foam agent to the fluid flowing into the fluid supply unit 20 . A control unit 40 for controlling the driving of the supply unit 30, the fluid supply unit 20 and the foam supply unit 30, and the fluid supply unit 20 and the foam supply unit 30 to drive the fluid supply unit 20 and It includes a driving unit 50 that can check the driving state of the foam supply unit 30 , and the fluid supply unit 20 includes a driving pulley 22 rotating by the driving force of the engine 21 , and the driving pulley 22 . The first electromagnetic clutch 23 that transmits the rotational force to the main pump 24, is driven by the rotational force of the driving pulley 22, and the rotational force of the main pump 24 and the driving pulley 22 that supplies the fluid and a belt 25 for transferring the A second electromagnetic clutch 32 that transmits the It communicates with the foam pump 33, and the other end communicates with the foam tank 35, the foam passage 34, which is discharged from the foam tank 35 and the foam pump 33 in which the foam agent is stored. and a connection flow path 36 providing a path through which the foam drug is introduced into the main pump 24, and the driving unit 50 is provided with a low fluid level flashing lamp 51a on the outside, and an alarm sound on the inside It is characterized in that it includes a fluid low level check unit 51 installed with a warning buzzer 51b to generate.

In addition, the fluid supply part 20 is provided on one side of the main pump 24, the inlet part 26a into which the fluid is introduced, and the other side of the main pump 24, the fluid is discharged. A discharge portion 26b, one end communicates with one side of the inlet portion 26a, and the other end communicates with one side of the discharge portion 26b, and is provided on the other side of the main passage 27 and the main passage 27 , It characterized in that it further comprises a relief valve 28 including an elastic body (28a) that contracts or expands by the discharge pressure of the fluid inside.

In addition, in the relief valve 28, when the discharge pressure of the fluid is equal to or greater than the expansion force of the elastic body 28a, the elastic body 28a is contracted by the discharge pressure of the fluid, and the inside of the relief valve 28 is opened. and when the discharge pressure of the fluid is less than the expansion force of the elastic body 28a, the elastic body 28a expands by the expansion force of the elastic body 28a, so that the inside of the relief valve 28 is blocked. .

In addition, the control unit 40 is provided in the discharge unit 26b of the main pump 24, the pressure sensor 41 for detecting the discharge pressure of the fluid, the discharge pressure of the fluid from the pressure sensor 41 It is characterized in that it includes a controller (45) for receiving the transmission and controlling the first electromagnetic clutch (23) and the engine (21).

In addition, the limit pressure of the fluid is input to the controller 45 in advance, and the controller 45

When the discharge pressure of the fluid rises above the limit pressure of the fluid, an off signal is transmitted to the first electromagnetic clutch 23 to turn off the first electromagnetic clutch 23, so that the main pump 24 It is characterized in that the driving of the stop is stopped.

In addition, when the discharge pressure of the fluid falls below the limit pressure of the fluid, an ON signal is transmitted to the first electromagnetic clutch 23 to turn on the first electromagnetic clutch 23, so that the main pump ( 24) is driven.

In addition, the control unit 40 is provided at the inlet portion 26a of the main pump 24, and further comprises a flow sensor 42 for detecting the flow rate of the fluid in the inlet portion 26a. do.

In addition, the controller 45 receives the flow rate signal of the fluid from the flow sensor 42, and when the fluid does not flow into the inlet 26a, blinks the flashing lamp 51a, and It is characterized in that the alarm sound is generated through the warning buzzer (51b).

In addition, the control unit 40 is characterized in that it further comprises an engine rotation speed adjusting device 43 for adjusting the rotation speed of the engine 21 under the control of the controller (45).

In addition, when the discharge pressure of the fluid falls below the set pressure of the fluid, the controller 45 transmits a rotation speed increase signal to the engine speed control device 43 to rotate the engine 21 . To increase the number, and when the discharge pressure of the fluid rises above the set pressure of the fluid, transmit a rotation speed reduction signal to the engine speed control device 43 to reduce the rotation speed of the engine 21 characterized in that

In addition, in the main pump 24 , when the rotational speed of the driving pulley 22 increases, the inflow of the fluid increases due to the increased rotational force of the driving pulley 22 , and the rotation of the driving pulley 22 . When the number decreases, the inflow of the fluid is reduced by the reduced rotational force of the driving pulley 22 .

In addition, in the foam pump 33 , the number of rotations of the driven pulley 31 increases by the increased rotational force of the driving pulley 22 , so that the foam discharged to the inlet 26a of the main pump 24 . By increasing the supply amount of the drug, and decreasing the rotational speed of the driven pulley 31 by the reduced rotational force of the driving pulley 22, the foam drug discharged to the inlet 26a of the main pump 24 It is characterized by a decrease in supply.

In the fire extinguishing water supply system according to the present invention, when the main pump is driven, an increase in the discharge amount of the fluid, a change in the diameter of the inlet and the outlet, and blockage of the discharge unit by foreign substances causes the pressure sensor of the discharge unit to have a fluid above the limit pressure of the fluid. When the discharge pressure is sensed, the controller turns off the first electromagnetic clutch to cut off the driving power for the main pump, thereby stopping the driving of the main pump, and supplying the pressure sensor of the discharge unit with the fluid less than the limit pressure. When the discharge pressure is sensed, by re-driving the main pump, durability of the main pump can be improved, and the safety of a manager who manages the fire-fighting water supply system can be secured.

In addition, in the fire extinguishing water supply system according to the present invention, when a discharge pressure of a fluid equal to or greater than a set pressure of the fluid is sensed by the pressure sensor of the discharge unit, the controller transmits a rotation speed reduction signal to the engine rotation speed control device to rotate the engine When the number is reduced and the discharge pressure of the fluid is lower than the set pressure of the fluid, a rotation speed increase signal is transmitted to the engine rotation speed control device to increase the rotation speed of the engine, and the discharge pressure of the fluid This is always kept constant, so that durability of the main pump can be improved, and the safety of a manager who manages the fire-fighting water supply system can be secured.

In addition, in the fire extinguishing water supply system according to the present invention, the supply volume ratio of the fluid and the foam agent is kept constant by the driving pulley of the fluid supply part and the driven pulley of the foam supply part, so that the fluid and the foam agent are stably supplied.

1 is a block diagram of a fire extinguishing water supply system according to the present invention.
2 is a block diagram of a driving unit in the fire extinguishing water supply system according to the present invention.
3 is a flowchart for explaining an operation process of the first electromagnetic clutch and the main pump by the controller.
4 is a flowchart for explaining a process of increasing/decreasing engine speed by a controller.
5 is a flowchart for explaining the process of increasing the supply amount of the fluid and the foam agent by the increase in the number of rotations of the drive pulley.
6 is a flowchart for explaining a process in which the supply amount of the fluid and the foam agent is reduced by reducing the rotational speed of the driving pulley.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings in order to describe in detail enough that a person of ordinary skill in the art to which the present invention pertains can easily implement the technical idea of the present invention.

However, the following examples are merely examples to help the understanding of the present invention, thereby not reducing or limiting the scope of the present invention. In addition, the present invention may be embodied in several different forms and is not limited to the embodiments described herein.

1 is a block diagram of a fire extinguishing water supply system 10 according to the present invention, and FIG. 2 is a block diagram of a driving unit in the fire extinguishing water supply system 10 according to the present invention.

3 is a flowchart for explaining the operation process of the first electromagnetic clutch 23 and the main pump 24 by the controller 45, and FIG. 4 is a flowchart for explaining the process of increasing/decreasing the engine speed by the controller 45 It is a flowchart.

5 is a flowchart for explaining the process of increasing the supply amount of the fluid and foam agent by increasing the rotation speed of the drive pulley 22, Figure 6 is the fluid and foam agent by reducing the rotation speed of the drive pulley 22 It is a flowchart to explain the process of decreasing the supply.

1 and 2 , the fire extinguishing water supply system 10 according to the present invention includes a fluid supply unit 20 , a foam supply unit 30 , a control unit 40 , and a driving unit 50 .

First, the fluid supply unit 20 supplies a fluid used for firefighting water. At this time, the fluid is introduced through the fluid supply unit 20 and discharged to the outside.

And, the foam supply unit 30 supplies the foam agent to the fluid flowing into the fluid supply unit 20 . At this time, the foam agent is introduced into the fluid supply unit 20 by the foam supply unit 30 , and is discharged to the outside together with the fluid by the fluid supply unit 20 .

And, the control unit 40 controls the overall operation of the fluid supply unit 20 and the foam supply unit 30 .

In addition, the driving unit 50 drives the fluid supply unit 20 and the foam supply unit 30 , and may check the driving state of the fluid supply unit 20 and the foam supply unit 30 .

Referring to FIG. 1 , the fluid supply unit 20 includes a driving pulley 22 , a first electromagnetic clutch 23 , a main pump 24 , and a belt 25 .

First, the driving pulley 22 is coupled to the engine 21 through the driving shaft 22c, and rotates by the driving force of the engine 21 . A plurality of first groove portions 22a for fastening the belt 25 are recessed in the outer circumferential surface of the driving pulley 22 , and the driving shaft 22c connected to the engine 21 is inserted through the center of the driving pulley 22 . A first through-hole 22b to be formed is formed therethrough. In this case, the cross section of the first through hole 22b is preferably circular.

In addition, the first electromagnetic clutch 23 is disposed on the right side of the driving pulley 22 , and serves to transmit the rotational force of the driving pulley 22 to the main pump 24 .

In addition, the main pump 24 is shaft-coupled to the driving pulley 22 , driven by the rotational force of the driving pulley 22 , and supplies a fluid. In this case, the main pump 24 is preferably a rotating positive displacement pump.

And, the belt 25 connects the driving pulley 22 and the driven pulley 31 to transmit the rotational force of the driving pulley 22 to the driven pulley 31 . At this time, it is preferable that the belt 25 has a predetermined thickness and is an elastic material formed long in the longitudinal direction.

Referring to FIG. 1 , the foam supply unit 30 includes a driven pulley 31 , a second electromagnetic clutch 32 , a foam pump 33 , a foam flow path 34 , a foam tank 35 and a connection flow path 36 . is comprised of

First, the driven pulley 31 is connected to the driving pulley 22 by the belt 25 and rotates by the rotational force of the driving pulley 22 . A second groove portion 31a for fastening the belt 25 is recessed on the outer peripheral surface of the driven pulley 31 , and a second through hole through which the driven shaft 31c is inserted is formed in the center of the driven pulley 31 . do. In this case, the cross section of the second through hole is preferably circular.

In addition, the second electromagnetic clutch 32 is disposed on the right side of the driven pulley 31 , and serves to transmit the rotational force of the driven pulley 31 to the foam pump 33 .

Then, the foam pump 33 is shaft-coupled to the driven pulley 31 and driven by the rotational force of the driven pulley 31 , and supplies the foam agent to the fluid flowing into the main pump 24 . In this case, the foam pump 33 is preferably a rotating positive displacement pump.

And, one end of the foam flow path 34 communicates with the foam pump 33 , and the other end of the foam flow path 34 communicates with the foam tank 35 , so that the foam agent flows through the foam flow path 34 . At this time, the foam flow path 34 is preferably in the shape of a circular pipe having a predetermined thickness that is first and secondly bent vertically at one side and the other side of the foam flow path 34, respectively.

And, the foam medicine is stored inside the foam tank 35 , and the foam tank 35 is connected to the foam pump 33 through the foam flow path 34 . At this time, it is preferable that the foam tank 35 has a predetermined thickness and has a shape of a rectangular parallelepiped with an empty inside.

And, the connection flow path 36 communicates with the other side of the foam pump 33 and one side of the main pump 24 , and provides a passage for the foam drug discharged from the foam pump 33 to flow into the main pump 24 . do. At this time, the connection flow path 36 has a predetermined thickness, and preferably has a shape of a circular pipe bent vertically from one side of the connection flow path 36 .

Referring to FIG. 1 , the fluid supply part 20 further includes an inlet part 26a , a discharge part 26b , a main flow path 27 , and a relief valve 28 .

First, the inlet 26a is provided on one side of the main pump 24, and the fluid is introduced through the inlet 26a. In this case, the inlet portion 26a is preferably in the shape of a circular pipe having a predetermined thickness.

And, the discharge part 26b is provided on the other side of the main pump 24, and the fluid introduced from the inflow part 26a is discharged to the outside through the discharge part 26b. At this time, it is preferable that the discharge part 26b has the shape of a circular pipe having a predetermined thickness.

And, one end of the main flow path 27 communicates with one side of the inlet part 26a, and the other end of the main flow path 27 communicates with one side of the discharge part 26b, so that the fluid flows into the main flow path 27 inside. will move At this time, it is preferable that the main flow path 27 has a predetermined thickness and is in the shape of a circular pipe that is first bent vertically at one side of the main flow path 27 and is vertically secondly bent at the other side of the main flow path 27 . Do.

In addition, the relief valve 28 is provided on the other side of the main flow path 27 , and an elastic body 28a that contracts or expands by the discharge pressure of the fluid is provided inside the relief valve 28 . In this case, the elastic body 28a is preferably a spring having a predetermined expansion force.

When the discharge pressure of the fluid is equal to or greater than the expansion force of the elastic body 28a, the elastic body 28a of the relief valve 28 is contracted by the discharge pressure of the fluid, and the inside of the relief valve 28 is opened. Accordingly, the fluid flowing into one side of the inlet 26a passes through the main flow path 27 and flows out to one side of the discharge unit 26b, thereby circulating the main pump 24 and the main flow path 27 .

And, when the discharge pressure of the fluid is less than the expansion force of the elastic body 28a, the elastic body 28a of the relief valve 28 expands by the expansion force of the elastic body 28a, and the inside of the relief valve 28 is blocked. At this time, the fluid flowing into the inlet 26a does not pass through the main flow path 27 but passes through the main pump 24 and is discharged to the outside through the outlet 26b.

2, the driving unit 50 is provided with a low-fluid level flashing lamp 51a on the outside, and a low-fluid level checking unit 51 provided with a warning buzzer 51b for generating an alarm sound on the inside. .

The control unit 40 is configured to include a pressure sensor 41 and a controller 45 .

First, the pressure sensor 41 is provided in the discharge unit 26b of the main pump 24 to sense the discharge pressure of the fluid passing through the discharge unit 26b.

Then, the controller 45 receives the discharge pressure of the fluid from the pressure sensor 41 to control the first electromagnetic clutch 23 and the engine 21 .

Referring to FIG. 3 , a limit pressure of the fluid may be input to the controller 45 in advance.

When the discharge pressure of the fluid rises above the limit pressure of the fluid, the controller 45 transmits an off signal to the first electromagnetic clutch 23 to turn off the first electromagnetic clutch 23 , thereby turning off the main pump 24 . stop the operation of When the main pump 24 is driven, the reason that the discharge pressure of the fluid becomes greater than or equal to the limit pressure of the fluid is the increase in the discharge amount of the fluid, the change in the diameters of the inlet 26a and the outlet 26b, and the discharge portion 26b due to foreign substances. ) due to blockage of

In addition, when the factor that increases the discharge pressure of the fluid is eliminated and the discharge pressure of the fluid falls below the limit pressure of the fluid, the controller 45 transmits an ON signal to the first electromagnetic clutch 23, By turning on the electromagnetic clutch 23, the main pump 24 is driven.

Through this, not only can the durability of the main pump be improved, but there is an advantage in that the safety of the manager who manages the fire extinguishing water supply system 10 can be secured.

On the other hand, a check valve 29 having a plate shape may be installed in the discharge portion 26b of the main pump 24 . When the first electromagnetic clutch 23 is turned off and the driving of the main pump 24 is stopped, the check valve 29 serves to prevent a reverse flow of the fluid passing through the discharge part 26b. Through this, when the discharge pressure of the fluid falls below the set pressure of the fluid, it is possible to prevent malfunction of the main pump 24 due to the reverse flow of the fluid.

The control unit 40 is provided in the inlet portion 26a of the main pump 24 and further includes a flow sensor 42 configured to detect an inflow flow rate of the fluid in the inlet portion 26a.

At this time, the controller 45 receives the flow rate signal of the fluid from the flow sensor 42 , when the fluid does not flow into the inlet portion 26a , generates an alarm sound and blinks the low fluid level lamp 78 .

On the other hand, the control unit 40 is configured to further include an engine rotation speed adjusting device 43 capable of adjusting the rotation speed of the engine 21 under the control of the controller 45 .

Referring to FIG. 4 , when the discharge pressure of the fluid falls below the set pressure of the fluid, the controller 45 transmits a rotation speed increase signal to the engine rotation speed control device 43 , and the engine 21 rotation speed to increase Through this, the rotational force of the driving pulley 22 shaft-coupled to the engine 21 increases, and the fluid discharged from the main pump 24 through the discharge part 26b by the increased rotational force of the driving pulley 22 . of discharge will increase.

In addition, when the discharge pressure of the fluid is equal to or greater than the set pressure of the fluid, the controller 45 transmits a rotation speed reduction signal to the engine rotation speed control device 43 to reduce the rotation speed of the engine 21 . Through this, the rotational force of the driving pulley 22 shaft-coupled to the engine 21 is reduced, and the fluid discharged from the main pump 24 through the discharge part 26b by the reduced rotational force of the driving pulley 22 . of discharge will decrease.

Accordingly, in the main pump 24 , the discharge amount of the fluid is automatically adjusted by the pressure sensor 41 , the engine speed adjusting device 43 , and the controller 45 , so the discharge unit 26b in the main pump 24 is The fluid with a constant pressure is discharged to the outside through the

Referring to FIG. 5 , when the rotational speed of the driving pulley 22 increases, the discharge amount of the fluid increases in the main pump 24 by the increased rotational force of the driving pulley 22 . At the same time, by increasing the rotational speed of the driven pulley 31 by the increased rotational force of the driving pulley 22 , in the foam pump 33 , the supply amount of the foam agent discharged to the inlet 26a of the main pump 24 is will increase

Referring to FIG. 6 , when the rotational speed of the driving pulley 22 is decreased, the discharge amount of the fluid is decreased in the main pump 24 due to the reduced rotational force of the driving pulley 22 . At the same time, as the rotational speed of the driven pulley 31 is reduced by the reduced rotational force of the driving pulley 22 , in the foam pump 33 , the supply amount of the foam agent discharged to the inlet 26a of the main pump 24 is will decrease

Through this, since the supply volume ratio of the fluid and the foam agent is always kept constant, the supply of the fluid mixed with the foam agent can be made stably.

The fire fighting water supply system 10 according to the present invention further includes a lubricating water supply device 60 and a manual pump driving device 70 .

When the main pump 24 is initially driven, the lubricating water supply device 60 supplies a small amount of lubricating water to the main pump 24 to reduce friction between internal components in order to prevent the main pump 24 from being driven in a dry state. It is a device for supplying to the inlet (26a) of the.

When the main pump 24 is initially driven, the main pump 24 is driven in a dry state for a predetermined time before the fluid flows into the inlet 26a of the main pump 24 . When the main pump 24 is driven in a dry state, heat generation and wear due to friction between the internal components of the main pump 24 (eg, a rotating rotor and a case) occur, so that the durability of the main pump 24 is reduced. can be lowered

Therefore, when the main pump 24 is initially driven, a lubricating water supply device 60 for supplying a small amount of lubricating water to the inlet 26a of the main pump 24 is provided, and the internal configuration of the main pump 24 is provided. Friction between elements can be reduced. The administrator may supply lubricating water to the inlet 26a of the main pump 24 by driving the lubricating water supply device 60 through the lubricating water switch 58 of the switch-one-touch driving unit 50 .

On the other hand, the manual pump driving device 60 is for manually driving the main pump 24 when the controller 45 for electronically controlling the driving of the main pump 24 does not operate.

Since the fire extinguishing water supply system 10 according to the present invention is mainly used in emergency situations such as fire, continuous stability is required when the fire extinguishing water supply system 10 is driven. However, even when the controller 45, which is the electronic control system, does not operate due to a power failure or the like, the main pump 24 can be forcibly driven manually through the manual pump driving device.

Referring to FIG. 2 , the driving unit 50 includes a pressure display unit 52 , a pressure setting dial 53 , a first clutch lamp 54 , a second clutch lamp 55 , a pump driving switch 56 , and a foam pump driving unit. It is configured to further include a switch 57 and a lubrication water switch 58 .

First, the discharge pressure of the fluid according to the driving of the main pump 71 is displayed on the left side of the pressure display unit 52 , and the set pressure of the fluid is displayed on the right side of the input display unit 71 .

And, the pressure setting dial 53 is used to input the set pressure of the fluid. Specifically, the administrator may input the set pressure of the fluid by rotating the pressure setting dial 53 .

In the first clutch ramp 54 and the second clutch ramp 55 , the driving states of the main pump 24 and the foam pump 71 are checked by checking the operating states of the first electromagnetic clutch and the second electromagnetic clutch, respectively. Each can be checked.

And, the pump drive switch 56 and the foam pump drive switch 57 are used to drive the main pump 24 and the foam pump 33, respectively.

The lubricating water switch 58 is used to supply lubricating water to the main pump 24 through the lubricating water supply device 60 .

As described above, the present invention has a main technical idea to provide a fire fighting water supply system 10, and the embodiment described above with reference to the drawings is only one embodiment, and the true scope of the present invention is However, based on the claims, it will also extend to equivalent embodiments that may exist in various ways.

10: fire water supply system 20: fluid supply
21: engine 22: drive pulley
22a: first groove 22b: first through hole
22c: drive shaft 23: first electromagnetic clutch
24: main pump 25: belt
26a: inlet 26b: outlet
27: main flow passage 28: relief valve
28a: elastic body 29: check valve
30: foam supply 31: driven pulley
31a: second groove 31b: second through hole
31c: driven shaft 32: second electromagnetic clutch
33: foam pump 34: foam flow
35: foam tank 36: connecting flow path
40: control unit 41: pressure sensor
42: flow sensor 43: engine speed control device
45: controller 50: drive unit
51: fluid low level ramp 52: pressure indicator
53: pressure setting dial 54: first clutch ramp
55: second clutch lamp 56: pump drive switch
57: foam pump actuation switch 58: lubricating water switch
60: lubricating water supply device 61: lubricating water valve
70: manual pump drive device

Claims (6)

a fluid supply unit 20 through which a fluid is introduced and discharged;
a foam supply unit 30 for supplying a foam agent to the fluid flowing into the fluid supply unit 20;
a control unit 40 for controlling the driving of the fluid supply unit 20 and the foam supply unit 30; and
a driving unit 50 for driving the fluid supply unit 20 and the foam supply unit 30 and to check the driving state of the fluid supply unit 20 and the foam supply unit 30;
including,
The fluid supply unit 20 is
The driving pulley 22 rotated by the driving force of the engine 21 , the first electromagnetic clutch 23 that transmits the rotational force of the driving pulley 22 to the main pump 24 , and the rotational force of the driving pulley 22 . and a belt 25 for transmitting the rotational force of the main pump 24 for supplying the fluid and the driving pulley 22 to the driven pulley 31 driven by the
The foam supply unit 30 is
The driven pulley 31 rotated by the rotational force of the driving pulley 22 , the second electromagnetic clutch 32 that transmits the rotational force of the driven pulley 31 to the form pump 33 , and the driven pulley 31 . A foam pump 33 driven by a rotational force and supplying the foam agent to the main pump 24, one end communicates with the foam pump 33, and the other end communicates with the foam tank 35. 34), a foam tank 35 in which the foam agent is stored, and a connection flow path 36 that provides a passage through which the foam agent discharged from the foam pump 33 flows into the main pump 24 and,
The driving unit 50
A water supply system for fire extinguishing, characterized in that it includes a fluid low level check unit (51) provided with a low fluid level flashing lamp (51a) on the outside and a warning buzzer (51b) for generating an alarm sound on the inside. The method of claim 1,
The fluid supply unit 20 is
an inlet (26a) provided on one side of the main pump (24), through which the fluid is introduced;
a discharge part 26b provided on the other side of the main pump 24 to discharge the fluid;
a main flow path 27 having one end in communication with one side of the inlet portion 26a and the other end communicating with one side of the discharge portion 26b; and
A relief valve (28) provided on the other side of the main flow path (27) and including an elastic body (28a) contracted or expanded by the discharge pressure of the fluid inside;
In the relief valve 28
When the discharge pressure of the fluid is equal to or greater than the expansion force of the elastic body 28a, the elastic body 28a is contracted by the discharge pressure of the fluid and the inside of the relief valve 28 is opened,
When the discharge pressure of the fluid is less than the expansion force of the elastic body 28a, the elastic body 28a expands by the expansion force of the elastic body 28a, and the inside of the relief valve 28 is blocked. supply system. The method of claim 1,
The control unit 40
a pressure sensor 41 provided in the discharge part 26b of the main pump 24 to sense the discharge pressure of the fluid;
a controller 45 receiving the discharge pressure of the fluid from the pressure sensor 41 and controlling the first electromagnetic clutch 23 and the engine 21;
including,
The controller 45 has
The limit pressure of the fluid is input in advance,
The controller 45 is
When the discharge pressure of the fluid rises above the limit pressure of the fluid, an off signal is transmitted to the first electromagnetic clutch 23 to turn off the first electromagnetic clutch 23, so that the main pump 24 stop the operation of
When the discharge pressure of the fluid falls below the limit pressure of the fluid, an ON signal is transmitted to the first electromagnetic clutch 23 to turn on the first electromagnetic clutch 23, thereby turning on the main pump 24 Fire extinguishing water supply system, characterized in that for driving. 4. The method of claim 3,
The control unit 40
It is provided in the inlet (26a) of the main pump (24), the flow sensor (42) for detecting the flow rate of the fluid in the inlet (26a); further comprising,
The controller 45 is
When the flow signal of the fluid is received from the flow sensor 42 and the fluid does not flow into the inlet 26a, the flashing lamp 51a blinks, and the warning buzzer 51b gives an alarm. Fire-fighting water supply system, characterized in that it generates a sound. 4. The method of claim 3,
The control unit 40
an engine speed adjusting device 43 for adjusting the speed of the engine 21 under the control of the controller 45;
further comprising,
The controller 45 is
When the discharge pressure of the fluid falls below the set pressure of the fluid, a rotation speed increase signal is transmitted to the engine rotation speed control device 43 to increase the rotation speed of the engine 21,
When the discharge pressure of the fluid rises above the set pressure of the fluid, a speed reduction signal is transmitted to the engine speed control device 43 to reduce the speed of the engine 21 water supply system. 3. The method of claim 2,
In the main pump 24
When the number of rotations of the driving pulley 22 increases, the inflow of the fluid increases by the increased rotational force of the driving pulley 22,
When the rotational speed of the driving pulley 22 is reduced, the inflow of the fluid is reduced by the reduced rotational force of the driving pulley 22,
In the foam pump 33
By increasing the rotational speed of the driven pulley 31 by the increased rotational force of the driving pulley 22, the supply amount of the foam agent discharged to the inlet 26a of the main pump 24 increases,
By reducing the rotational speed of the driven pulley 31 by the reduced rotational force of the driving pulley 22, the supply amount of the foam agent discharged to the inlet 26a of the main pump 24 is reduced. fire water supply system.

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