KR100276207B1 - Fire extinguishing system of a building - Google Patents

Abstract

PURPOSE: A fire fighting system in a building is provided to reduce a constructing cost and a maintenance cost with small horsepower of a pump by supplying water using a difference in water head. CONSTITUTION: A fire fighting system contains an underground water tank(11), a rooftop water tank(13), a sprinkler(23), a sprinkler water supply line(2) forcibly feeding water to a sprinklers(23), a fireplug water supply line(3) forcibly feeding water to fireplugs(33) and a water pumping line(4) pumping water from the underground water tank to the rooftop water tank. The sprinkler water supply line contains a sprinkler pipe(21) connected from the rooftop water tank to the underground water tank, many sprinkler branch pipes(22), many sprinklers, a sprinkler pump(24) near the rooftop water tank, a sprinkler charging pump(25) and a sprinkler pressure tank(26). The system additionally contains a water supplying pipe(5) for general use. The fireplug water supply line contains a fireplug pipe(31) connected from the rooftop water tank to the underground water tank, many fireplug branch pipes(32), many fireplugs, a fireplug pump(34) near the rooftop water tank, a fireplug charging pump(35) and a fireplug pressure tank(36).

Description

Building fire fighting system

The present invention relates to a fire-fighting system of a building that is installed to extinguish a fire generated inside the building, and in particular, since various pumps are installed on the roof, not only the construction is convenient but also the construction cost is reduced, and the maintenance cost is also increased. It is about a fire fighting system which can be reduced.

In general, the fire fighting system of the building, as shown in Figure 2, the ground water tank (61); The sprinkler water supply line 7 for pumping water from the ground water tank 61 to the sprinkler 73 installed on each floor while connecting the rooftop water tank 63, the ground water tank 61, and the rooftop water tank 63; And, the hydrant water supply line 8 for pumping water from the groundwater tank 61 to the fire hydrants 83 installed on each floor while connecting the groundwater tank 61 and the rooftop water tank 63, and the ground water tank ( And a pumping line 9 for pumping water from the tank 61 to the rooftop tank 63.

The sprinkler water supply line 7 includes a sprinkler supply pipe 71 connecting the rooftop water tank 63 and the ground water tank 61, and a plurality of sprinkler branch pipes 72 branched from the sprinkler supply pipe 71 to each layer. And water from the groundwater tank 61 to the sprinkler 73 through a plurality of sprinklers 73 connected to the sprinkler branch pipes 72 and the sprinkler supply pipe 71 and the sprinkler branch pipes 72. It has a sprinkler feed pump 74, a sprinkler charge pump 75, and a sprinkler pressure tank 76 which are sequentially installed in the sprinkler supply pipe 71 adjacent to the groundwater tank 61 so as to be pumped. Sprinkler feed pump 74 and the sprinkler charge pump 75 is installed to operate in conjunction with the pressure of the sprinkler pressure tank 76. The fire hydrant water supply line 8 includes a hydrant supply pipe 81 connecting the ground water tank 61 and the rooftop water tank 63, and a plurality of hydrant branch pipes 82 branched from the hydrant supply pipe 81 to each layer. Water from the groundwater tank 61 to the hydrants 83 through a plurality of hydrants 83 connected to the hydrant branch pipes 82 and the hydrant supply pipe 81 and the hydrant branch pipes 82. It has a hydrant feed pump 84, a hydrant charge pump 85 and a hydrant pressure tank 86 which are sequentially installed in the hydrant supply pipe 81 adjacent to the ground water tank 61 so as to be pumped. The hydrant feed pump 84 and the hydrant charge pump 85 are installed to operate in conjunction with the internal pressure of the hydrant pressure tank 86. The pumping line 9 pumps water from the groundwater tank 61 to the rooftop tank 63 through the pumping pipe 91 connecting the groundwater tank 61 and the rooftop tank 63 and the pumping pipe 91. In order to have a water pump (92) installed in the pump pipe 91 adjacent to the ground water tank (61).

And, in order to supply the living water to each floor in general, the living water supply line 65 is further installed. The living water supply line 65 includes a living water supply pipe 66 extending from the rooftop water tank 63 underground and a plurality of living water branch pipes 67 branched from the living water supply pipe 66 to each floor. It is made to include.

Reference numeral 77 denotes a valve installed in a portion adjacent to the rooftop water tank 63 of the sprinkler supply pipe 71, reference numeral 87 denotes a valve installed in a portion adjacent to the rooftop water tank 63 of the fire hydrant supply pipe 81, and reference numeral 68 The valve provided in the part adjacent to the rooftop water tank 63 of the living water supply pipe 66 is shown.

Next, the operation according to the conventional fire fighting system configured as described above will be described.

Water is supplied from the water purification plant to the groundwater tank 61, and when the pump pump 92 is driven, water is supplied from the groundwater tank 61 to the rooftop tank 63 by the pump pipe 91 to the rooftop tank 63. Water is stored continuously. The water stored in the rooftop tank 63 may be supplied to each floor through the living water supply pipe 66 and the living water branch pipes 67 branched to each floor to be used as living water.

Normally, the sprinkler water supply line 7 and the fire hydrant water supply line 8 are filled with water so that the pressure in the conduit is at a predetermined set pressure higher than atmospheric pressure. Typically, the terminal set pressure of the conduit of the embroidered lines 7 and 8 is set to about 1.7 kg / cm 2 or more. In particular, in the case of the sprinkler water supply line 7, the reason why the pressure in the conduit should be maintained at a high pressure even if the sprinkler 73 is operated by a relatively high initial operating pressure is established. Since the sprinkler 73 does not operate even if the feed pump 74 is driven, the pipeline pressure of the sprinkler feed line 7 should always be maintained at a high pressure.

Thus, when water leaks from the sprinkler water supply line 7 and the fire hydrant water supply line 8 while the pipeline pressure of the sprinkler water supply line 7 and the fire hydrant water supply line 8 is maintained at high pressure, The drop in pressure is sensed through a pressure sensor (not shown) installed in the pressure tanks 76,86. This pressure drop detection signal is transmitted to the feed water pumps 74 and 84 or the charge pumps 75 and 85 so that they are driven to compensate for the loss pressure of the pipeline. The charge pumps 75 and 85 are installed to compensate for relatively small pressure changes. When the large pressure water leaks or is lost and the pressure in the pipeline is rapidly reduced, the charge pumps 75 and 85 are used. Is not driven and the feed pumps 74 and 84 are driven to compensate for the loss pressure.

In such a state, when a fire is detected in the room through a fire detector installed in the room, the sprinkler 73 is opened to spray water. When the pipeline pressure of the sprinkler water supply line 7 suddenly decreases due to the operation of the sprinkler 73, the sprinkler pressure tank 76 is transferred to the sprinkler pressure tank 76, and the reduced internal pressure of the sprinkler pressure tank 76 is sprinkler pressure tank 76. The sprinkler feed water pump 74 is transmitted to the sprinkler feed water pump 74 through a signal of a pressure sensor installed therein, so that water can be continuously supplied to the sprinkler 73 by driving the sprinkler feed water pump 74. Then, if necessary, the fire hose installed inside the fire hydrant 83 is connected to the fire hydrant branch pipe 82, and then the water is sprayed through the fire hose when the valve is opened. Accordingly, the pipeline pressure of the fire hydrant water supply line 8 is suddenly increased. When lowered, this pressure is transmitted to the hydrant pressure tank 86. The lowered internal pressure of the hydrant pressure tank 86 is transmitted to the hydrant feed pump 84 through a signal of a pressure sensor (not shown) installed in the hydrant pressure tank 86, from which the hydrant feed pump 84 is driven. As a result, water can be continuously supplied to the fire hydrants 83.

And, in the case of an emergency in which water cannot be supplied to the sprinkler 73 and the fire hydrants 83 through the sprinkler water supply line 7 and the fire hydrant water supply line 8 from the groundwater tank 61, the valve installed on the roof By opening the fields 77 and 87 to supply water from the rooftop tank 63 to the fire zone, extinguishing in an emergency can be performed.

However, the conventional fire fighting system made as described above has the following problems.

First, since both the feed water pumps 74 and 84 and the charge pumps 75 and 85 are installed in the basement, water loss from the ground water tank 61 needs to be pumped upward, so that head loss occurs as the head reaches the top floor of the building. Therefore, a large amount of pumps with a large horsepower is required to obtain a sufficient head level to the top floor of the building, which requires a lot of construction costs for the construction of the fire fighting system.

Second, the feed pipes 71 and 81 and the branch pipes 72 and 82 should be thick in order to withstand the pipeline pressure by the pumps 74, 75, 84 and 85 with large horsepower as described above. In addition to the large internal diameter, construction costs are further increased.

Third, the pumps 74, 75, 84, and 85 are all installed in a humid basement, which not only shortens the service life of the pumps, but also may cause the pumps to not operate when not used for a long time. The fire fighting system can be useless.

Fourth, various electric operation panels for driving the pumps 74, 75, 84, and 85 are also installed in the basement, whereby various wirings of the electric operation panels are likely to cause short circuits or short circuits, which may cause a fire, and a person who operates the operation panels. It is dangerous because there is a risk of electric shock.

The present invention has been made in view of the above-described conventional problems, it is possible to reduce the construction cost as well as easy construction by installing a variety of pumps and water tanks on the roof to supply water using the natural pressure caused by water head difference The aim is to provide a fire fighting system that can reduce maintenance costs and use pumps with small horsepower.

1 is a schematic configuration diagram showing a fire fighting system according to the present invention.

Figure 2 is a schematic configuration diagram showing a conventional fire fighting system.

<Description of the code | symbol about the principal part of drawing>

2: Sprinkler water supply line 3: Fire hydrant water supply line

4: Pumping line 5: Household water supply line

11: groundwater tank 13: rooftop water tank

21, 31, 51: supply pipe 22, 32, 52: branch pipe

23: sprinkler 24: sprinkler water supply pump

25: sprinkler pressure pump 26: sprinkler pressure tank

33: fire hydrant 34: fire hydrant water pump

35: hydrant pressure pump 36: hydrant pressure tank

41: pumping pump 42: pumping pump

Fire fighting system according to the present invention to achieve the above object,

An underground water tank, a rooftop water tank, a sprinkler water supply line for pumping water from the rooftop water tank to sprinklers installed on each floor, and a fire hydrant water supply line for pumping water from the rooftop water tank to fire hydrants installed on each floor; In a fire fighting system of a building comprising a pumping line for pumping water from an underground tank to a rooftop tank,

The sprinkler water supply line, a sprinkler supply pipe extending from the rooftop tank underground, a plurality of sprinkler branch pipe branched from the sprinkler supply pipe to each layer, a plurality of sprinkler connected to the sprinkler branch pipes, and the It has a sprinkler feed pump, a sprinkler charge pump and a sprinkler pressure tank which are sequentially installed in the sprinkler supply pipe adjacent to the rooftop tank to feed water from the rooftop tank to the sprinkler.

The sprinkler feed pump and the sprinkler charge pump are installed to operate in conjunction with the internal pressure of the sprinkler pressure tank,

The fire hydrant water supply line, a fire hydrant supply pipe extending from the rooftop tank underground, a plurality of fire hydrant branch pipe branched from the hydrant supply pipe to each layer, a plurality of hydrants connected to the hydrant branch pipes, and the It has a fire hydrant feed pump, a hydrant pressure pump and a hydrant pressure tank which are installed in the hydrant supply pipe adjacent to the rooftop tank so as to pump water from the rooftop tank to the fire hydrants,

The hydrant feed water pump and the hydrant charge pump are installed to operate in conjunction with the internal pressure of the hydrant pressure tank, and the living water supply pipe is extended from the rooftop water tank to the basement to supply the living water to each floor from the rooftop water tank. Living water branch pipes branched from the living water supply pipe to each floor, living water drain valves installed in the basement located in the basement of the living water supply pipe, and living water installed in the withdrawal end from the rooftop water tank of the living water supply pipe. It is characterized in that the living water supply line having a water supply valve is installed.

The pumping line is installed in a portion located in the basement of the pumping pipe in order to pump water from the groundwater tank to the rooftop tank through the pumping pipe and the pumping pipe connecting the ground water tank and the rooftop tank like the conventional pumping line. Has a third-grade water pump

According to the fire fighting system of the present invention configured as described above, when driving the pump pump water is supplied from the ground water tank to the rooftop tank by the pump pipe and the water is stored in the rooftop tank. The water stored in the rooftop water tank is supplied to each floor through the living water supply line, that is, the living water supply pipe and the living water branch pipe, and used as living water. Normally, the sprinkler water supply line and the hydrant water supply line are filled with water so that the internal pressure of the conduit is at a predetermined set pressure higher than atmospheric pressure. As such, in the state where the pipeline pressure is maintained at a high pressure, when the water inside the pipeline leaks and the pipeline pressure decreases relatively low, the charge pumps are driven to compensate for the loss pressure. If the internal pressure of the pipe is greatly reduced, the charge pumps are not driven and the feed water pumps are driven to compensate for the loss pressure.

On the other hand, if it is detected that a fire has occurred in the room, the sprinkler is opened and water is diffused and spraying is automatically performed. Accordingly, as the internal pressure of the pipeline is rapidly lowered, the water supply pump is driven so that the water continues to the sprinkler. As it is supplied, extinguishing can be continued. And, if necessary, after connecting the fire hose installed inside the fire hydrant to the fire hydrant branch pipe and open the valve, the water is sprayed through the fire hose can be carried out manually. If the pressure of the hydrant water supply line is drastically lowered, since the hydrant water supply pump is driven from this point, water is continuously supplied to the hydrant, so that the manual fire hydrant can be continuously performed.

Other features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

As shown in FIG. 1, the fire fighting system according to the present invention includes a ground water tank 11, a rooftop water tank 13, and a sprinkler 23 installed on each floor from the rooftop water tank 13 to pressurize water. Sprinkler water supply line (2), and the fire hydrant water supply line (3) for pumping water from the rooftop water tank 13 to the hydrants 33 installed in each layer, and the rooftop water tank (13) from the ground water tank (11) It comprises a pumping line (4) for pumping water to the).

Pumping line (4) is a pumping pipe (41) connecting the ground water tank (11) and the rooftop tank (13) with each other, the pumping pump 42 which is connected to the pumping pipe 41 adjacent to the ground water tank (11) Has Accordingly, when the pump pump 42 is driven, water may be continuously pumped from the ground water tank 11 to the rooftop tank 13 through the pump pipe 41.

According to the present invention, the sprinkler water supply line 2 is a sprinkler supply pipe 21 extending from the rooftop water tank 13 to the basement, and a plurality of sprinkler branch pipes 22 branched from the sprinkler supply pipe 21 to each layer. ), A plurality of sprinklers 23 connected to the sprinkler branch pipes 22, and a sprinkler adjacent to the rooftop tank 13 to pump water from the rooftop tank 13 to the sprinklers 23; It consists of a sprinkler feed pump 24, a sprinkler charge pump 25 and a sprinkler pressure tank 26 which are sequentially installed in the supply pipe 21.

The sprinkler feed pump 24 and the sprinkler charge pump 25 is preferably installed to operate in conjunction with the internal pressure of the sprinkler pressure tank 26. That is, the sprinkler pressure tank 26 is provided with a pressure sensor (not shown) to detect the internal pressure, the pressure sensor is electrically connected to the sprinkler feed pump 24 and the sprinkler charge pump 25, the leakage When the pressure of the sprinkler pressure tank 26 is lowered relatively, for example, the sprinkler charge pump 25 is driven, and when the pressure of the sprinkler pressure tank 26 is lowered relatively, the sprinkler feed pump 24 is driven. The pipeline pressure of the sprinkler water supply line 2 is maintained relatively high.

In addition, the sprinkler drain valve 28 is preferably provided at the lower end of the sprinkler supply pipe 21 extending underground, and the sprinkler water supply valve is provided at the outlet end of the sprinkler supply pipe 21 from the rooftop water tank 13. It is preferable that 27 is provided.

According to the present invention, the fire hydrant water supply line 3, the fire hydrant supply pipe 31 is extended to the basement from the rooftop water tank 13, and a plurality of hydrant branch pipes branched to each layer from the hydrant supply pipe 31 ( 32, a plurality of hydrants 33 connected to the hydrant branch pipes 32, and adjacent to the rooftop tank 13 to pressurize water from the rooftop tank 13 to the hydrants 33. It includes a hydrant feed water pump 34, the hydrant pressure pump 35 and the hydrant pressure tank 36 which are sequentially installed in the hydrant supply pipe 31.

The hydrant feed water pump 34 and the hydrant charge pump 35 are preferably installed to operate in conjunction with the internal pressure of the hydrant pressure tank 36. That is, the pressure hydrant pressure tank 36 is also provided with a pressure sensor (not shown) for detecting the internal pressure of the hydrant pressure tank 36, the pressure sensor is electrically connected to the sprinkler feed pump 24 and the sprinkler charge pump 25 When connected, the hydrant pressure pump 35 is driven when the pressure of the hydrant pressure tank 36 decreases relatively small due to leakage, and the hydrant water supply pump 34 when the pressure of the hydrant pressure tank 36 decreases relatively large. By being driven, the pipeline pressure of the hydrant water supply line 3 is maintained relatively high.

A hydrant drain valve 38 is installed at a lower end of the portion of the hydrant supply pipe 31 that extends underground, and a hydrant water supply valve 37 is provided at a lead end of the hydrant supply pipe 31 from the rooftop water tank 13. It is preferable to install.

On the other hand, reference numeral 5 is a living water supply line, the living water supply pipe 51 extending from the rooftop water tank 13 to the basement, and the living water branch pipe 52 branched to each floor from the living water supply pipe 51. ) In addition, a living water drain valve 54 is installed at a lower end of the living water supply pipe 51 extending underground, and a water supply valve for living water is provided at the withdrawal end from the rooftop water tank 13 of the living water supply pipe 51. 53) is preferably installed. The living water feed valve 53 may also be installed at the outlet of the living water supply pipe 51 from the rooftop water tank 13.

Although not shown here, it is preferable that the water supply pumps 24 and 34 and the charge pumps 25 and 35 are installed on the roof, and an operation panel for driving them is also installed on the roof.

Next, the operation of the fire fighting system according to the present invention configured as described above will be described.

When the pump pump 42 is driven as water is supplied from the water purification plant to the ground water tank 11, the water is pumped from the ground water tank 11 to the rooftop water tank 13 by the pump pipe 41 to the rooftop water tank 13. Water can be stored continuously. The water stored in the rooftop water tank 13 may be supplied to each floor through the living water supply pipe 51 and the living water branch pipes 52 branched to each floor to be used as living water.

Normally, the sprinkler water supply line 2 and the fire hydrant water supply line 3 are filled with water so that the pressure in the pipeline is at a predetermined set pressure higher than atmospheric pressure. Typically, the end setting pressure of the pipe is set at a pressure higher than 1.7 kg / cm 2. As such, when the pipeline pressure of the sprinkler water supply line 2 and the hydrant water supply line 3 is maintained high, if the water leaks from the sprinkler water supply line 2 and the hydrant water supply line 3, the pipeline pressure decreases relatively low. Then, the charge pumps 25 and 35 are driven to compensate for the loss pressure of the pipe. In addition, when the pipeline pressure decreases relatively high, the charge pumps 25 and 35 are not driven, and the feed water pumps 24 and 34 are driven to compensate for the loss pressure of the pipeline. Therefore, the pressure in the pipeline can always be kept constant.

In this state, if a fire occurs in the room, the water is first sprayed by the operation of the sprinkler 23, the fire extinguishing operation is automatically performed. Then, when the water is discharged by the operation of the sprinkler 23, the pressure of the sprinkler water supply line 2 is sharply lowered. At this time, the water is continued to the sprinkler 23 while the pressure is compensated by driving the sprinkler water supply pump 24. The fire extinguishing work can be continued automatically.

Then, if necessary, the fire hydrant branch pipe 32 is connected to a fire hose installed inside the fire hydrant 33, and when the fire hydrant valve is opened, water is sprayed through the fire hose to perform the fire fighting work manually. Since the pressure of the hydrant water supply line 3 is drastically reduced in the process of discharging water from the hydrant 33, in this case, the hydrant water supply pump 34 is driven to compensate for the pressure, thereby continuously supplying the water to the hydrant 33. Therefore, the manual fire extinguishing operation by the fire hydrant 33 can be continued.

The following Table 1 compares the prices of the pumps when the fire fighting system according to the present invention and the conventional fire fighting system are constructed in accordance with the specifications that can perform the same fire fighting work with each other.

As shown in the following Table 1, the fire fighting system according to the present invention is to be installed on the roof pumps do not need to pump water to the sprinkler 23 or the fire hydrant 33, the pump constituting the conventional fire fighting system It can be seen that the construction cost can be reduced because pumps 24, 25, 34, and 35 having a small horsepower, which are much cheaper than those used in the present invention, may be employed.

division Fire fighting system according to the present invention Long fire fighting system Sprinkler Feed Pump Flow, head 3㎥ / min, 25m 3㎥ / min, 105m Market price ￦ 1,600,000 ￦ 7,480,000 Fire Extinguishing Water Pump Flow, head 0.3㎥ / min, 25m 0.3㎥ / min, 90m Market price ￦ 582,000 ￦ 1,840,000 Charge pump Flow, head 0.06㎥ / min, 25m 0.06㎥ / min, 90m Market price ￦ 100,000 ￦ 490,000

According to the fire fighting system according to the present invention configured as described above,

First, the water supply pumps 24 and 34 and the charge pumps 25 and 35 are all installed on the roof to supply water to the sprinkler 23, the fire hydrant 33, and each household by using natural pressure caused by water head. It is possible not only to operate the pump pump 42 and the other pumps 24, 25, 34, 35 in normal operation, but also to drive these pumps 24, 25, 34, 35 so that the sprinkler ( 23) and pumps 24, 25, 34 and 35 are also installed on the roof when water is supplied to the fire hydrant 33 and the sprinkler 23 and the fire hydrant 33 using the natural pressure mainly due to water head rather than the pump pressure. ), It is also possible to use inexpensive small horsepower pumps (24, 25, 34, 35). Therefore, the construction cost can be remarkably reduced as compared with the prior art.

Second, since the firefighting water supply line up to the groundwater tank 11 is excluded, the installation area of the fire fighting system can be reduced, and the construction length of the supply pipes 21 and 31 can be shortened to further reduce the construction cost and to facilitate the construction. Lose.

Third, the pumps 24, 25, 34, and 35 are all installed on the roof where moisture is less than underground, thereby extending the life of the pumps 24, 25, 34 and 35 as well as pumps having small horsepower 24 Since 25,34 and 35 are used, the power consumption is also small, thus reducing the maintenance cost.

Fourth, it is possible to prevent accidents due to short circuits and short circuits by excluding damage to the electrical equipment due to moisture, and to operate safely.

Claims (1)

An underground water tank, a rooftop water tank, a sprinkler water supply line for pumping water from the rooftop water tank to sprinklers installed on each floor, and a fire hydrant water supply line for pumping water from the rooftop water tank to fire hydrants installed on each floor; And in the building fire fighting system comprising a pumping line for pumping water from the ground tank to the rooftop tank, The sprinkler water supply line, a sprinkler supply pipe extending from the rooftop tank underground, a plurality of sprinkler branch pipe branched from the sprinkler supply pipe to each layer, a plurality of sprinkler connected to the sprinkler branch pipes, and the It has a sprinkler feed pump, a sprinkler charge pump and a sprinkler pressure tank which are sequentially installed in the sprinkler supply pipe adjacent to the rooftop tank to feed water from the rooftop tank to the sprinkler. The sprinkler feed pump and the sprinkler charge pump are installed to operate in conjunction with the internal pressure of the sprinkler pressure tank, The fire hydrant water supply line, a fire hydrant supply pipe extending from the rooftop tank underground, a plurality of fire hydrant branch pipe branched from the hydrant supply pipe to each layer, a plurality of hydrants connected to the hydrant branch pipes, and the Has a hydrant feed pump, hydrant pressure pump and hydrant pressure tank which is installed in the hydrant supply pipe adjacent to the rooftop tank in order to pump water from the rooftop tank to the hydrants, The hydrant feed pump and the hydrant charge pump are installed to operate in conjunction with the internal pressure of the hydrant pressure tank, A living water supply line is further provided with a living water supply pipe extending from the rooftop water tank to the basement to supply living water to each floor from the rooftop water tank, and a living water branch pipe branched from the living water supply pipe to each floor. Fire fighting system of the building, characterized in that.