TW202135898A - Fire extinguishing system and method for manufacturing same - Google Patents

Abstract

Provided is a fire extinguishing system with which it is possible to provide the required types of sprinkler systems in required locations. The fire extinguishing system is provided in a first region and in a second region differing from the first region, and comprises a low-pressure sprinkler system (100b) provided in the first region, and a normal-pressure or pressurized sprinkler system (200a) provided in the second region.

Description

Fire extinguishing system and manufacturing method thereof

The invention relates to a fire extinguishing system and a manufacturing method thereof.

In the past, the wet sprinkler system was disclosed in Japanese Patent No. 3264939. [Prior Patent Document] [Patent Literature]

[Patent Document 1] Japanese Patent No. 3264939

[The problem to be solved by the invention]

In the previous sprinkler system, when the sprinkler head failed, there was a problem of water being discharged from the sprinkler head. [Means to solve the problem]

A fire extinguishing system according to one form is a fire extinguishing system installed in a first area and a second area different from the first area, which includes: a negative pressure sprinkler system installed in the first area; and in the second area Normal pressure or pressurized sprinkler system installed in the area.

In the fire extinguishing system constructed in this way, the sprinkler system of the required method can be installed where necessary.

The normal pressure or pressurized sprinkler system in the second zone has a sprinkler head, and the metal in the sprinkler head melts due to the heat of the fire. It is better to release water from the sprinkler head without a signal from the sensor.

In the fire extinguishing system constructed in this way, because the normal pressure or pressurized sprinkler system of the second zone is not linked to the sensor, the metal in the sprinkler head is melted by the heat of the fire. The water head releases the water in the secondary piping. In this system, because there is no need for coordinated control of the first and second areas, it can be realized at a low cost. The introduction cost becomes cheaper.

The manufacturing method of the above-mentioned fire extinguishing system is to install a normal pressure or pressurized sprinkler system in the first area; specify the leaks from the sprinkler piping of the normal pressure or pressurized sprinkler system, in a way to plug the leaks After attaching the repair material to the outside of the sprinkler pipe, connect the negative pressure pump and the sprinkler pipe to form a negative pressure sprinkler system.

In the manufacturing method of the fire extinguishing system constructed in this way, a negative pressure sprinkler system can be constructed by repairing the sprinkler system in the first area. As a result, the negative pressure sprinkler system can be manufactured at low cost.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Manufacturing method of fire extinguishing system)

Figure 1 is a diagram for explaining the manufacturing method of the fire extinguishing system. As shown in Fig. 1, in the manufacturing method of the fire extinguishing system, the leakage of the fluid from the secondary piping of the sprinkler system is specified (step S301). The secondary piping of the sprinkler system does not become a negative pressure sprinkler system. The sprinkler system can also be a wet sprinkler system where the secondary piping is filled with liquid. The sprinkler system can also be a dry sprinkler system in which the secondary piping is filled with gas.

Furthermore, this sprinkler system is used in at least two areas of the first area and the second area. For example, the sprinkler system is used in buildings with more than 2 floors. Install sprinkler systems on the first floor of the building and the second floor above or below the first floor. In addition, the two regions are not necessarily located above and below. Two areas can also be set on the same floor or the same ground.

The secondary piping of the sprinkler system means the piping to which the sprinkler head is connected. In contrast, the piping from the water pump to the valve is called the primary piping of the sprinkler system.

As a method of identifying leakage from the secondary piping, for example, when the secondary piping is filled with water, stains are generated in the building due to the water leakage. Therefore, if the secondary piping near the stain is investigated, the leak can be identified. When the secondary piping is filled with gas, a pressure sensor is installed in the secondary piping. When the pressure drop per unit time is large, it is regarded as a leak. By investigating the secondary piping, the leak can be identified. Place.

Generally, leakage is likely to occur from the thinner part of the secondary piping. For example, the end of the secondary piping is often threaded and connected to the joint. Because the thickness of the threaded part is easy to become thinner, leakage may occur from this part.

After the leakage can be specified, the liquid in the secondary piping is removed. When the secondary piping is filled with gas, the gas may not be removed.

Water leakage from the piping of a general pressurized or non-pressurized sprinkler system is based on the following structure. After a long period of time has elapsed after the sprinkler system is installed, corrosion due to moisture in the pipe progresses from the inside of the pipe to the outside of the pipe, and finally a hole that penetrates from the inside to the outside of the pipe is formed.

The leak is repaired from the outside of the secondary piping (step S302). As a method of repairing leaks, there are adhesive tapes made of organic or inorganic materials from the outside of the secondary piping, welding leaks from the outside of the secondary piping, injecting gel from the outside of the secondary piping to the leak, or A sol-like substance, after injecting a high-viscosity fluid from the side of the secondary piping to a leak, harden the fluid, etc. The leak is repaired from the outside of the secondary piping. This is due to the following reasons. The repair material is pulled inward when the leak is repaired from the outside of the secondary piping due to the negative pressure in the secondary piping in the later steps. The repair material is difficult to escape; repairing from the inside of the secondary piping is virtually impossible; repairing the secondary piping from the outside is cheaper than replacing the secondary piping.

The person who repairs the leak is one area of the first area and the second area where the leakage occurs, and the other area is the secondary piping that will not be repaired.

When repairing, it is better to wash the outer side of the secondary piping so that the repair material easily adheres to the outer side of the secondary piping. As the cleaning method, there are cleaning with an interfacial activator, cleaning with acid or alkali, and cleaning with the surface of a grinding wheel.

After specifying the leak, repair the hole from the outside of the secondary piping. I also thought of removing the piping with water leakage, but when the removal of the piping is a large-scale modification, the manpower time for maintenance in the protection zone increases. Furthermore, the construction cost also becomes expensive. Therefore, the hole is repaired from the outside with the repair material, thereby stopping the water leakage. Because the negative pressure sprinkler system is built at the back, even if the repair material is sucked into the hole due to negative pressure, the repair material will not be pressurized from the hole to the outside. Therefore, the repair material does not peel off.

Connect the negative pressure pump to the repaired secondary piping (step S303). By connecting the negative pressure pump to the secondary piping, the inside of the secondary piping can become negative pressure. When the inside of the secondary piping becomes negative pressure, the repair material installed on the outside of the secondary piping is pulled inside the secondary piping, so the repair material is fixed to the leak.

In the area where the negative pressure pump is connected to the secondary piping, the control system is changed to a sprinkler with the secondary piping acting as a negative pressure. The secondary piping is under negative pressure, and it can also be unfilled or filled with liquid. When the secondary piping is under negative pressure and the secondary piping is filled with liquid, this area functions as a wet negative pressure sprinkler. The other areas function as sprinklers that are not negative pressure. When the secondary piping is under negative pressure and the secondary piping is not filled with liquid, this area functions as a dry negative pressure sprinkler. The other areas function as sprinklers that are not negative pressure.

In the case of a wet-type negative pressure sprinkler, because the secondary piping is filled with liquid and the secondary piping becomes negative pressure, the liquid evaporates from the secondary piping. In order to replenish the evaporated liquid, a valve installed at the boundary between the secondary piping and the primary piping is opened to allow the liquid to flow in from the primary piping to the secondary piping. In order to realize this kind of control, new installations are required: a sensor, which detects the amount of liquid in the secondary piping; and a control device, based on the sensor, in order to supply liquid from the primary piping to the secondary piping in response to needs And open the valve. It can also be made that in the event of a fire, by stopping the suction by the negative pressure pump or weakening the suction force, the liquid in the secondary piping will not flow to the side of the negative pressure pump and only discharged from the sprinkler in the secondary piping water.

In the case of a dry negative pressure sprinkler, since it is unnecessary to consider the reduction of liquid in the secondary piping as shown above, the control of a valve to prevent the reduction of liquid in the secondary piping is not required. However, it is also possible that in the event of a fire, by stopping the suction by the negative pressure pump or weakening the suction force, the liquid in the secondary piping will not flow to the negative pressure pump side and only the secondary piping will be discharged from the sprinkler. Inside the water.

The advantage of creating a negative pressure sprinkler system in only specific areas in this way is that, first of all, compared to the case where all areas are made into a negative pressure sprinkler system, the cost of modification becomes cheaper.

Secondly, by creating a negative pressure sprinkler system, repair work can be done from the outside of the secondary piping, and the construction cost will be cheaper.

Leave the repaired piping and remove the components used only in the pressurized or non-pressurized sprinkler system. There are many different components in the pressurized or non-pressurized sprinkler system and the negative pressure sprinkler system. Therefore, remove the machines that are only used in pressurized or non-pressurized sprinkler systems. (Description of negative pressure sprinkler system)

The negative pressure sprinkler system is used in environments that do not like moisture, such as medical facilities, nuclear power plants, and lithium battery factories. The negative pressure sprinkler system is installed in the building. The building has a first partition on the lower floor and a second partition on the upper floor. In addition, the negative pressure sprinkler system may not be used in an environment that does not like moisture, but can also be used in an environment where a pressurized or non-pressurized sprinkler system is used.

The negative pressure sprinkler system has: primary piping; secondary piping connected to the primary piping; sprinkler head set in the secondary piping; And a piping water supply.

Fill the primary piping system with water. This water system is pressurized by a water pump. For the water pump, water is supplied from the fire extinguishing tank. Water can also be supplied to the water pump from the elevated water tank on the uppermost floor of the building. The primary piping system stands vertically from the pump to the uppermost part of the building, and is branched on each floor. The floor system of the building is not limited to 2 floors. The water system of the primary piping is stopped by a valve, and the valve is opened to supply the water of the primary piping to the secondary piping. The opening and closing of the valve is controlled by a computer.

The secondary piping system is connected to the valve. The secondary piping system is arranged in the zone for fire extinguishing. The secondary piping system is arranged on the ceiling of the partition. In the secondary piping, multiple sprinkler heads are installed. The number of sprinkler heads is determined according to the width of the zone.

The sprinkler head is a closed sprinkler head and is provided with a plurality of holes for discharging water. The sprinkler head has a heat-sensitive mechanism (meltable metal sheet). In the normal state, the water outlet hole and the secondary piping are tied in the sprinkler head to be shielded. When the thermal mechanism melts due to the flame in the fire, the shut-off is opened, and the water is discharged from the hole of the sprinkler head through the primary piping.

The negative pressure system has a negative pressure piping connected to the secondary piping, and a negative pressure pump that makes the negative pressure inside the negative pressure piping negative pressure. By simply connecting the negative pressure piping and the secondary piping, a negative pressure sprinkler system can be realized.

The negative pressure pump generates negative pressure. It is also possible that the negative pressure pump is composed of the main machine and the standby machine. In this case, the system can supply the total usage of the facility during failure and maintenance. In the case of use in medical facilities, the air containing the inhaled bacteria and plural bacteria (bacteria) is collected by an inhalation filter in order to avoid polluting the atmosphere.

The negative pressure piping system connected to the negative pressure pump is vertically erected from the negative pressure pump to the uppermost floor of the building, and is branched on each floor. On each floor, the negative pressure piping is branched, and the negative pressure piping is laid everywhere in each room. The negative pressure pump is connected to the negative pressure piping.

The negative pressure piping and the secondary piping system are connected at the connection point. Therefore, in the normal state, the internal pressure of the secondary piping becomes negative pressure.

When the negative pressure sprinkler system is a wet negative pressure sprinkler system, under normal conditions, the secondary piping becomes negative pressure, and water exists in the secondary piping. By creating a negative pressure, even if the sprinkler head is damaged, it can prevent water from leaking from the sprinkler head. In order to prevent water from flowing from the secondary piping to the negative pressure pipe, a membrane or a gas-liquid separation device through which the water vapor system passes but does not allow water to pass may be installed near the connection point. Because the secondary piping is under negative pressure, the water system evaporates. In order to replenish water, the valve may be opened when the water is reduced, and water may be replenished to the secondary piping.

When the negative pressure sprinkler system is a dry negative pressure sprinkler system, in the state, the secondary piping is made negative pressure, and there is no water in the secondary piping.

The detection system has a fire detector and a computer. When a fire occurs in the protection zone, the fire detector detects the heat or smoke. Connect the computer and the valve by the signal wire. Connect the computer and the water pump with the signal cable.

The fire extinguishing system includes: a negative pressure sprinkler system, which has a sprinkler head and a secondary piping as a sprinkler piping for supplying water to the sprinkler head. The secondary piping is maintained at a negative pressure in a normal state; a negative pressure piping ; Negative pressure piping; and Negative pressure pump are used as a negative pressure device to supply negative pressure to the secondary piping and negative pressure piping.

Figure 2 is a schematic diagram of the fire extinguishing system before repair. As shown in Figure 2, the sprinkler system 1 as the fire extinguishing system before repair is installed on the first floor 100 as the first zone (first protection zone) and the first floor as the second zone (second protection zone). 200 on the second floor. On the first floor 100, a pressurized sprinkler system 100a is installed. On the second floor 200, a pressurized sprinkler system 200a is installed. The pressurized sprinkler systems 100a and 200a may be replaced with sprinkler systems other than negative pressure.

Connect the primary piping 4 to the water pump 2 system. The output of the water pump 2 is controlled by the control device 3. The output of the water pump 2 can be continuously changed. Water is supplied to the water pump 2 from a water tank not shown. In this water, no impurities may be added, and rust inhibitors may also be added.

The primary piping 101 for the first floor 100 is branched from the primary piping 4. The primary piping 101 is connected to a valve 105 located at the boundary between the primary piping 101 and the secondary piping 102. The opening and closing of the valve 105 is controlled by the control device 3.

A plurality of sprinkler heads 103 are installed in the secondary pipe 102. The sprinkler head 103 is installed on the first floor 100. The sprinkler head 103 has a part that is melted by the heat of a fire. In the event of a fire, this part is melted, and liquid (water) which is a fire extinguishing agent is supplied to the first floor 100 from the secondary pipe 102 through the sprinkler 103.

The secondary piping 102 may be filled with water or unfilled.

On the first floor 100, a sensor 104 for sensing heat is installed. When the sensor 104 senses heat, it transmits the signal to the control device 3. The control device 3 instructs the water pump 2 to increase the output of the water pump 2. The control device 3 opens the valve 105. When the secondary pipe 102 is not filled with water, the valve 105 is also opened to fill the secondary pipe 102 with water. However, the air in the secondary pipe 102 is compressed and stays in the secondary pipe 102. When the secondary piping 102 is filled with water in advance, the valve 105 is opened to increase the water pressure in the secondary piping 102.

When the meltable part of the sprinkler head 103 is melted by heat, the water in the secondary piping 102 is discharged to the first floor 100 through the sprinkler head 103.

The primary piping 4 is connected to a valve 205 located at the boundary between the primary piping 4 and the secondary piping 202. The opening and closing of the valve 205 is controlled by the control device 3. The primary piping 4 is connected to the other primary piping 101 and 201.

A plurality of sprinkler heads 203 are installed in the secondary pipe 202. The sprinkler head 203 is installed on the second floor 200. The sprinkler head 203 has a part that is melted by the heat of a fire. In the event of a fire, this part is melted, and water, which is a fire extinguishing agent, is supplied to the first floor 100 from the secondary pipe 202 through the sprinkler 203. The secondary pipe 202 may be filled with water or unfilled.

On the second floor 200, a sensor 204 for sensing heat is provided. When the sensor 204 senses heat, it transmits the signal to the control device 3. The control device 3 instructs the water pump 2 to increase the output of the water pump 2. The control device 3 opens the valve 205. When the secondary pipe 202 is not filled with water, the valve 205 is also opened to fill the secondary pipe 202 with water. However, the air in the secondary pipe 202 is compressed and stays in the secondary pipe 202. When the secondary pipe 202 is filled with water in advance, the valve 205 is opened, and the water pressure in the secondary pipe 202 rises.

In the case of the sprinkler system that is not a negative pressure and the negative pressure sprinkler system 100b, the sensor 104 is reused.

When the meltable part of the sprinkler head 203 is melted by heat, the water in the secondary pipe 202 is discharged to the second floor 200 through the sprinkler head 203.

Figure 3 is a schematic diagram of the fire extinguishing system after repair. As shown in FIG. 3, it is assumed that a leak 110 has occurred in the secondary piping 102. In this case, repair the leak 110 from the outside. Furthermore, the secondary pipe 102 is connected to the negative pressure pump 5. A negative pressure pipe 109 is interposed between the secondary pipe 102 and the negative pressure pump 5. Thereby, the inside of the secondary piping 102 can be made negative pressure.

Figure 4 is a cross-sectional view of the leak. As shown in FIG. 4, at the leak 110, the hole 1020 of the secondary piping 102 is passed through. The hole 1020 is plugged with a repair material 111 from the outside of the secondary pipe 102.

In this example, a leak 110 occurs on the first floor 100, but a leak may occur at the secondary piping 202 of the second floor 200. In this case, while repairing the secondary piping 202 from the outside, the secondary piping 202 is connected to the negative pressure pump 5 at the same time.

The secondary piping 102 of the first floor 100 is set to a negative pressure on one side, and the secondary piping 102 may be filled with water or not filled with water on the other side. In the case of filling with water, because the secondary piping 102 has a negative pressure, the water easily evaporates. When the water in the secondary pipe 102 evaporates and the water level drops, the valve 105 is opened to replenish water into the secondary pipe 102.

When the secondary piping 202 is not filled with water, it operates as a dry negative pressure sprinkler system.

In sprinkler system 1, a negative pressure sprinkler system is installed on the first floor 100 series, and a non-negative pressure sprinkler system is installed on the second floor 200 series. In addition, whether the first floor 100 is a negative pressure sprinkler system, and the second floor is a negative pressure sprinkler system.

However, if a leak occurs not only in the secondary piping 102 on the first floor 100, but also in the secondary piping 202 on the second floor 200, the leak is repaired from the outside of the secondary piping 202. The piping 202 is connected to the negative pressure pump 5, and the second floor 200 can also form a negative pressure sprinkler system.

A hole 1020 as a pinhole is formed due to oxygen and the like contained in the water in the pipe. The water flows out from the hole 1020 due to the existence of the hole 1020. After specifying the position of the hole 1020, the repair material 111 can be borrowed from the outside to prevent the hole 1020.

As the repair material 111, an aluminum tape, a glass fiber cloth containing resin, and a rubber tape are attached. Furthermore, by welding a metal plate to the secondary piping 102, the repair material 111 may be constituted.

The negative pressure sprinkler system 100b is originally a pressurized or non-pressurized sprinkler system. Because the hole 1020 is formed, the hole 1020 is plugged and modified to a negative pressure type.

The sprinkler system 1 includes: a negative pressure sprinkler system 100b, which has a sprinkler head 103, and a negative pressure secondary piping 102 that supplies water to the sprinkler head 103; and a negative pressure pump 5, which is a negative pressure sprinkler system 100b is maintained in a negative pressure state in a normal state; a hole 1020 is formed in the secondary pipe 102 to penetrate the secondary pipe 102 in the thickness direction, and there is a repair material 111 that closes the opening of the hole 1020 from the outer side of the secondary pipe.

The operation of the negative pressure sprinkler system 100b will be described. When a fire occurs on the first floor 100 which is a part of the protection zone, the fire detector 104 detects the heat or smoke caused by the fire. The detected information is transmitted from the sensor 104 to the control device 3 which is a computer. The control device 3 supplies a signal to the valve 105 to open the valve 105. The control device 3 drives the water pump 2, or increases the driving force of the water pump 2. Thereby, in the dry negative pressure sprinkler system 100b, water is filled into the secondary piping 102 in a negative pressure state without normal system water. In the wet negative pressure sprinkler system 100b, the normal system secondary piping 102 is in a negative pressure state and filled with water. At this time, the driving force of the negative pressure pump 5 can also be made weaker than the steady state.

The heat caused by the fire melts the heat-sensitive mechanism of the sprinkler head 103. Thereby, the hole for discharging water of the sprinkler head 103 and the secondary pipe 102 are connected. When the valve 105 is opened and water is discharged from the water discharge hole of the sprinkler head 103, it is possible to extinguish a fire.

Compared with a dry sprinkler system (pre-action sprinkler system) in which the normal pressure in the secondary piping is normal, the negative pressure sprinkler system 100b according to the embodiment has the following effects. In the normal pressure dry sprinkler system, the pump operates in the event of a fire to fill the secondary piping with water. However, at this time, the air in the secondary piping is compressed by the water, so it is impossible to smoothly feed the secondary piping (in Short time) Fill with water. In contrast, in the wet-type negative pressure sprinkling system 100b, because the secondary pipe 102 is under negative pressure and filled with water, the sprinkler head 103 can sprinkle water in advance. Therefore, it is possible to solve the problem of the shortcomings of the conventional dry sprinkler system (pre-action sprinkler system), which is caused by the delay of sprinkling water from the sprinkler head. In the case of the dry negative pressure sprinkler system 100b, since the secondary pipe 102 is under negative pressure, the secondary pipe 102 is filled with water quickly, and the sprinkler head 103 can be sprinkled in advance.

Since the secondary piping 102 is used by a pressurized or non-pressurized sprinkler system, the manufacturing cost can be reduced compared with a newly installed sprinkler. Furthermore, the repair material 111 is pasted on the outside of the secondary pipe 102, but since the inside of the secondary pipe 102 is a negative pressure in the normal state, water leakage from the hole 1020 again does not occur.

The sprinkler system 1 as the fire extinguishing system is installed on the first floor 100 as the first area and the second floor 200 as the second area different from the first area. The fire extinguishing system is included on the first floor. The negative pressure sprinkler system 100b installed at 100 and the normal pressure or pressurized sprinkler system 200a installed on the second floor 200. Alternatively, the first floor 100 may be the second area, and the second floor 200 may be the first area.

In the fire extinguishing system constructed in this way, the sprinkler system of the required method can be installed where necessary. In addition, as a manufacturing method, a method of repairing the hole 1020 with the repairing material 111 is shown, but the hole 1020 may not necessarily be provided. When the hole 1020 is not provided, the repair material 111 is also not provided.

Figure 5 is a schematic diagram of a fire extinguishing system according to other forms. As shown in Fig. 5, in the fire extinguishing system 1 according to another form, no sensor is installed on the second floor 200, which is different from the fire extinguishing system 1 shown in Figs. 3 and 4. The normal pressure or pressurized sprinkler system 200a of the second floor 200 has a sprinkler head 203. The metal in the sprinkler head 203 is melted by the heat of the fire, and the sprinkler head 203 is released without a signal from the sensor. water. That is, the sprinkler head 203 is not connected to the control device 3. In addition, in this embodiment, as in the embodiment of FIGS. 3 and 4, the first floor 100 may be the second area, and the second floor 200 may be the first area. Furthermore, it can also be manufactured by a manufacturing method in which the hole 1020 of the secondary pipe 102 is provided and the repair material 111 is used to repair it. In addition, the hole 1020 of the secondary pipe 102 may not necessarily be provided. When the hole 1020 is not provided, the repair material 111 is also not provided.

In the case that the sprinkler 203 releases water without the signal from the sensor and control device 3, the factor that determines the conditions for the discharge of water from the sprinkler 203 on the second floor 200 is only the melting temperature of the metal in the sprinkler 203 , And the control of the release conditions becomes simple. Therefore, the sprinkler system 1 can be introduced at low cost.

According to a form of fire extinguishing system, it is a fire extinguishing system installed in at least any one of the first area and the second area different from the first area, which includes: a negative pressure sprinkler system with a sprinkler head , And the secondary piping that supplies water to the sprinkler head under negative pressure; and a negative pressure pump, which maintains the negative pressure sprinkler system in a normal state in a negative pressure state; the secondary piping system is formed to penetrate the thickness direction The hole of the secondary piping further has a repair material that closes the opening of the hole from the outer side of the secondary piping.

The fire extinguishing system constructed in this way has a repair material that closes the opening of the hole from the outside of the secondary piping. Therefore, when the secondary piping becomes negative pressure, the outside air will not be introduced from the hole.

According to a method of manufacturing a fire extinguishing system, it has the following steps. The sprinkler system with sprinkler piping that stores water in a normal state is installed on the first floor of the building and above or below the first floor The second floor of, specifies the leakage of the sprinkler piping from any one of the first floor and the second floor, and the repair material is attached to the sprinkler piping in such a way as to plug the leak Behind the outside, connect the negative pressure pump to the sprinkler piping to form a negative pressure sprinkler system.

In the manufacturing method of the fire extinguishing system constructed in this way, a negative pressure sprinkler system can be constructed by repairing the sprinkler system that stores water in the normal state. As a result, the negative pressure sprinkler system can be manufactured at low cost.

According to another method of manufacturing a fire extinguishing system, it has the following steps. The sprinkler system with sprinkler piping that does not store water in the normal state is installed on the first floor of the building and above the first floor Or the second floor below, specify the leaking place of the sprinkler piping from any one of the first floor and the second floor, and attach the repair material to the sprinkler in a way that plugs the leaking place After piping, connect the negative pressure pump to the sprinkler piping to form a negative pressure sprinkler system.

In the manufacturing method of the fire extinguishing system constructed in this way, a negative pressure sprinkler system can be constructed by repairing the sprinkler system that does not store water in the normal state. As a result, the negative pressure sprinkler system can be manufactured at low cost. Appendix 1 is a fire extinguishing system, which is a fire extinguishing system installed in at least any one of a first area and a second area different from the first area, which includes: a negative pressure sprinkler system with a sprinkler head , And the secondary piping that supplies water to the sprinkler head under negative pressure; and a negative pressure pump, which maintains the negative pressure sprinkler system in a normal state in a negative pressure state; the secondary piping system is formed to penetrate the thickness direction The hole of the secondary piping further has a repair material that closes the opening of the hole from the outer side of the secondary piping. Appendix 2 is a method of manufacturing a fire extinguishing system. The sprinkler system with sprinkler piping that normally stores water is installed in a first area and a second area different from the first area, and is specified from the first area. The water leakage of the sprinkler piping in either one of the area and the second area, after the repair material is attached to the outside of the sprinkler piping so that the leak is blocked, the negative pressure pump is connected to the The sprinklers are connected with pipes to form a negative pressure sprinkler system. Attachment 3 is a method of manufacturing a fire extinguishing system. The sprinkler system with sprinkler piping that does not store water in the normal state is installed in a first area and a second area different from the first area. After the water leaks in the sprinkler piping in either the first area or the second area, the repair material is attached to the outside of the sprinkler piping so that the leak is blocked, and then the negative pressure pump It is connected to the sprinkler piping to form a negative pressure sprinkler system.

It should be considered that the implementation mode disclosed this time is an example for all matters, not for limitation. The scope of the present invention is shown not by the above-mentioned embodiment, but by the scope of the patent claim, and intends to include the meaning equivalent to the scope of the patent claim and all changes within the scope.

1: Sprinkler system 2: water pump 3: control device 4,101,201: One-time piping 5: Negative pressure pump 100: first floor 100a, 200a: pressurized sprinkler system 100b: negative pressure sprinkler system 102, 202: Secondary piping 103,203: Sprinkler head 104, 204: sensors 105,205: Valve 109: Negative pressure tube 110: Leak 111: repair material 200: second floor 1020: hole S301, S302, S303: steps

[Figure 1] A diagram to illustrate the manufacturing method of the fire extinguishing system. [Figure 2] The schematic diagram of the fire extinguishing system before repair. [Figure 3] The schematic diagram of the fire extinguishing system after repair. [Fig. 4] It is a cross-sectional view showing the leaking part of the part enclosed by V in Figs. 3 and 5 in an enlarged manner. [Figure 5] A schematic diagram of a fire extinguishing system based on other forms.

1: Sprinkler system

2: water pump

3: control device

4,101,201: One-time piping

5: Negative pressure pump

100: first floor

100b: negative pressure sprinkler system

102, 202: Secondary piping

103,203: Sprinkler head

104, 204: sensors

105,205: Valve

109: Negative pressure tube

110: Leak

111: repair material

200: second floor

200a: Pressurized sprinkler system

Claims (3)

A fire extinguishing system is a fire extinguishing system installed in a first area and a second area different from the first area, which includes: The negative pressure sprinkler system set up in the first area; and The normal pressure or pressurized sprinkler system set up in the second area. Such as the fire extinguishing system of claim 1, wherein the normal pressure or pressurized sprinkler system of the second zone has a sprinkler head, and the metal in the sprinkler head is melted by the heat of the fire, and there is no sensor Under the signal, release water from the sprinkler. A method of manufacturing a fire extinguishing system, such as the method of manufacturing a fire extinguishing system of claim 1 or 2, which is: Set up normal pressure or pressurized sprinkler system in this first area; Specify the leak from the sprinkler piping of the normal pressure or pressurized sprinkler system, and after plugging the leak, attach the repair material to the outside of the sprinkler piping, and then connect the negative pressure pump to the sprinkler. The water tank is connected with a pipe, thereby constituting the negative pressure sprinkler system.

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