Water Supply and Drainage Apparatus for Firefighting of Buildings

Abstract

The present invention relates to a fire water supply and drainage device for a building, and more specifically, to a fire water cylinder-based fire water supply and drainage device capable of immediately pressurizing and supplying fire water using the weight of the device itself during the change-over time from when a fuel cell supplying emergency power is activated to output normal power when the normal power supply is cut off. A fire water supply and drainage device for a building according to an embodiment of the present invention comprises: a fire pump that pressurizes and supplies fire water to a fire pipe connected to a sprinkler; a fuel cell that supplies emergency power when the normal power supplied to the fire pump is cut off; a fuel tank in which fuel is charged to supply fuel to the fuel cell; a package frame in which the fire pump, the fuel cell, and the fuel tank are installed together; and a fire water cylinder that supports the package frame to supply fire water during the change-over time until operating power is produced when fuel is supplied to the fuel cell, and pressurizes and supplies fire water by the weight of the package frame.

Description

Technology Field

[0001] The present invention relates to a fire water supply and drainage device for a building, and more specifically, to a fire water cylinder-based fire water supply and drainage device capable of immediately pressurizing and supplying fire water using the load of the device itself during the change-over time from when a fuel cell supplying emergency power is activated to output normal power when the normal power supply is cut off. Background Technology

[0002] Generally, firefighting systems in buildings operate fire pumps to supply firefighting water to sprinklers, etc., in the event of a fire. These fire pumps are normally driven by the regular power supply, but in the event of a power outage caused by a fire, they must be powered by emergency power devices such as emergency generators or fuel cells.

[0003] To this end, a technology for supplying power by utilizing a fuel cell as an emergency power source has been disclosed in the past in Korean Patent Publication No. 10-2015-0025561 (published March 11, 2015).

[0004] The aforementioned conventional technology adopts a method of maintaining the system's power by operating a fuel cell when the power is cut off in the event of a fire.

[0005] However, conventional fuel cell-based systems, including those mentioned above, inevitably experience a 'change-over time' during which fuel is supplied into the stack to generate power and a chemical reaction is induced until the rated voltage is reached. When applied to fire pumps, there is a problem in that there is no power to drive the fire pump during the startup time, which ranges from a few seconds to tens of seconds, posing a significant risk of missing the golden time for initial fire suppression.

[0006] In addition, conventionally, separate energy storage systems (ESS) or uninterruptible power supply (UPS) can be used in combination to fill power gaps; however, this not only drastically increases installation costs but also poses problems such as a risk of explosion in high-temperature environments during a fire due to battery characteristics and difficult regular replacement and maintenance.

[0007] Therefore, there is an urgent need for a firefighting device with a new mechanism capable of physically and stably pressurizing and supplying firefighting water without the need for separate electrical auxiliary devices during the switching period when the power supply is interrupted. Prior art literature

[0008] (Patent Document 0001) KR 10-2015-0025561 A(Patent Document 0002) KR 10-2011-0133118 A The problem to be solved

[0009] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a fire water supply and drainage device for a building that can provide a physical driving structure capable of immediately pressurizing and supplying fire water without separate electrical energy during the idle time until the fuel cell, which serves as an emergency power source, is activated to produce operating power.

[0010] In addition, the present invention aims to provide a fire water supply and drainage device for a building having a piston pressurized cylinder structure that simplifies the structure by directly converting the weight (load) of the entire device into vertical physical pressurized energy and ensures operational reliability without the influence of the external environment.

[0011] In addition, the present invention aims to provide a fire water supply and drainage device for a building having buffering and flow control means to control sudden pressure changes that may occur when a load is applied and to maintain a fire water supply pressure optimized for the usage environment.

[0012] In addition, the present invention aims to provide a fire water supply and drainage device for a building capable of realizing uninterrupted power switching by automatically detecting the switching point between fire water supply by physical load and electric pump driving by a fuel cell according to the degree of mechanical potential energy depletion. means of solving the problem

[0013] A fire water supply and drainage device for a building according to an embodiment of the present invention for achieving the above-mentioned objective comprises: a fire pump that pressurizes and supplies fire water to a fire pipe connected to a sprinkler; a fuel cell that supplies emergency power when the normal power supplied to the fire pump is cut off; a fuel tank in which fuel is charged to supply fuel to the fuel cell; a package frame in which the fire pump, the fuel cell, and the fuel tank are installed together; and a fire water cylinder that supports the package frame to supply fire water during the switching time until operating power is produced when fuel is supplied to the fuel cell, and pressurizes and supplies fire water by the load of the package frame.

[0014] The above fire water cylinder may include a piston shaft that supports the package frame and is equipped with a piston that pressurizes the fire water, and a cylinder body formed with a fire water discharge port that is filled with the fire water, pressurized by the piston, and supplied to the fire pipe.

[0015] It further includes a support cylinder that supports the package frame together with the fire water cylinder, and the support cylinder may include a load pressure control valve that controls the flow rate of a buffer fluid filled inside to discharge to the outside in order to regulate the supply pressure of the fire water cylinder.

[0016] The fire water cylinder may include a power switching switch that automatically switches the fire water supply power to drive the fire pump by switching to the power of the fuel cell when the package frame is lowered to a preset height as a load is applied to the package frame. Effects of the invention

[0017] According to the present invention, by configuring a fire water cylinder that pressurizes and supplies fire water by the load of a package frame integrating a fuel cell and a fire pump, fire water can be immediately supplied using only potential energy without a separate high-capacity battery (UPS) even during the switching time, which is the initial power outage period of the fuel cell, thereby maximizing the reliability of initial fire suppression.

[0018] In addition, the present invention realizes a simple structure that directly converts mechanical load into hydraulic pressure by configuring a cylinder body with a supply port and a piston shaft supported by a package frame, thereby enabling reliable discharge of firefighting water without a complex control device and facilitating maintenance.

[0019] In addition, the present invention, by configuring a support cylinder that controls the discharge flow rate of a buffer fluid including a load pressure control valve, prevents a sudden drop of the frame and constantly regulates the discharge pressure of the firefighting water, thereby preventing damage to the firefighting piping and maintaining a stable sprinkler water discharge pressure.

[0020] In addition, the present invention enables a smooth automatic transition from mechanical water supply to electric water supply without water hammer or supply interruption by precisely aligning the point at which physical pressurized water is depleted with the point at which power is supplied by the fuel cell through a power switching switch configuration that switches the firefighting water supply power according to the downward height of the package frame. Brief explanation of the drawing

[0021] FIG. 1 is a schematic diagram illustrating a fire water supply and drainage device for a building according to an embodiment of the present invention. FIG. 2 is a schematic perspective view illustrating a fire water supply and drainage device for a building according to an embodiment of the present invention. FIG. 3 is a schematic side view illustrating a fire water supply and drainage device for a building according to an embodiment of the present invention, showing a state in which it operates by a constant power supply. FIG. 4 is a schematic side view illustrating a fire water supply and drainage device for a building according to an embodiment of the present invention, showing the state of supplying fire water by a fire water cylinder. Specific details for implementing the invention

[0022] Hereinafter, embodiments of the present invention will be described with reference to the attached drawings.

[0023] As illustrated in FIGS. 1 to 4, a fire water supply and drainage device (100) for a building according to an embodiment of the present invention may include a fire pump (110) that pressurizes and supplies fire water, a fuel cell (120) that supplies power to the fire pump (110), a fuel tank (130) that stores fuel, a package frame (140) in which the fire pump (110), the fuel cell (120), and the fuel tank (130) are installed together, and a fire water cylinder (150) that pressurizes and supplies fire water by the load of the package frame (140).

[0024] The fire pump (110) can pressurize the fire water stored in the fire tank (115) and supply it to the sprinkler (183) through the fire pipe (180).

[0025] The fire pipe (180) can be connected to the fire pump (110), and the fire pipe (180) may be equipped with an alarm valve (181) to supply or cut off fire water by maintaining the pressure of the fire pipe (180) and the pressure on the fire pump (110) side.

[0026] The fire piping (180) extends to each floor and each room of the building, and a sprinkler (183) for spraying fire extinguishing water may be installed in the fire piping (180).

[0027] A number of sprinklers (183) may be installed in the fire piping (180), and the sprinklers (183) may be known bulb-type sprinklers that spray fire extinguishing water while the bulb is automatically broken when a fire occurs.

[0028] The fire pump (110) can supply fire water pressurized by rotating the impeller by an electric motor and forcibly sucking in fire water from the fire tank (115) through the rotation of the impeller and centrifugal force and discharging it into the fire pipe (180).

[0029] The fire pump (110) can be operated only in the event of a fire by linking with the fire detector through the fire controller (190).

[0030] The fire pump (110) may be composed of multiple pumps, optionally including a main pump, an auxiliary pump, and a booster pump, as needed.

[0031] The fire pump (110) can operate by receiving a constant power supply authorized to the building, and can operate with emergency power generated from the fuel cell (120) when the constant power supply is cut off due to a fire.

[0032] The pump discharge port from which firefighting water is discharged from the fire pump (110) and the firefighting pipe (180) can be connected by an expandable pipe section (111) that is connected in a multi-stage form or flexibly connected so that the height of the connected part can change according to the up-and-down movement of the package frame (140).

[0033] The fuel cell (120) is a battery that generates power when fuel is supplied. The fuel cell (120) may be a hydrogen fuel cell (120) that uses hydrogen as fuel, and the fuel cell (120) may be any one of a phosphoric acid type (PAFC), a polymer electrolyte membrane type (PEMFC), a molten carbonate type (MCFC), a solid oxide type (SOFC), or an alkaline type (AFC) depending on the electrolyte.

[0034] The fuel tank (130) can be filled with fuel supplied to the fuel cell (120), and the fuel tank (130) can be filled with hydrogen directly or indirectly filled with hydrogen extracted from natural gas, methanol, ethanol, or LPG through a reformer.

[0035] The package frame (140) may be a frame capable of integrally installing a fire pump (110), a fuel cell (120), and a fuel tank (130), and the fire pump (110), the fuel cell (120), and the fuel tank (130) may be fixedly installed on the package frame (140).

[0036] The package frame (140) can be configured in the form of a square or circular frame or a bed such as a plate.

[0037] The fire water cylinder (150) supports the package frame (140) and can pressurize and supply fire water to the fire pipe (180) by the load of each component installed in the package frame (140) in case of emergency.

[0038] A plurality of fire water cylinders (150) are installed in the package frame (140), and the package frame (140) can be supported by the plurality of fire water cylinders (150). The package frame (140) is located on the upper floor of the building and the fire water cylinders (150) are located on the lower floor, so that the fire water filled in the fire water cylinders (150) is pressurized by the load of the package frame (140) and supplied to the fire pipe (180).

[0039] The fire extinguisher cylinder (150) may include a piston shaft (151) and a cylinder body (155), a package frame (140) may be attached to the upper end of the piston shaft (151), and a piston (153) may be attached to the lower end of the piston shaft (151).

[0040] Firefighting water can be filled into the cylinder body (155), and the upper part of the cylinder body (155) is positioned such that only the piston shaft (151) is exposed to the outside and the piston (153) is inserted inside, so that the firefighting water filled in the cylinder body (155) can be pressurized and discharged to the outside as the piston (153) moves downward due to the load of the package frame (140).

[0041] A fire water discharge port (157) for discharging fire water filled inside the cylinder body (155) into the fire pipe (180) may be formed at the lower part of the cylinder body (155), and the fire water discharge port (157) may be connected to the fire pipe (180). A discharge valve (159) for controlling the discharge of fire water may be optionally installed at the fire water discharge port (157). The discharge valve (159) is controlled by a fire controller (190) and can automatically open the fire water discharge port (157) when the supply of power is cut off.

[0042] In the fire water cylinder (150), a power switching switch (160) can be configured to switch power from the fuel cell (120) to start the fire pump (110) when the package frame (140) is lowered to a preset height.

[0043] The power switching switch (160) is installed in the cylinder body (155) in the form of an electric switch, and when the switch pro is in contact with the package frame (140) and pressurized, it can automatically supply power generated from the fuel cell (120) to the fire pump (110).

[0044] At this time, the switch probe (161) can be configured to be height-adjustable in the power switching switch (160) so that the power switching switch (160) operates after the time of producing power to operate the fire pump (110) from the fuel cell (120), taking into account the downward speed of the package frame (140).

[0045] Around the fire water cylinder (150), multiple support cylinders (170) for supporting a relatively heavy package frame (140) may be installed radially around the fire water cylinder (150).

[0046] Since the fire water cylinder (150) and the support cylinder (170) support the package frame (140), they may perform the function of cushioning vibrations caused by the operation of the fire pump (110) by the fluid or fire water filled inside.

[0047] In the support cylinder (170), a package frame (140) is connected to the upper end of the piston shaft, similar to the fire water cylinder (150), and a piston is installed at the lower end of the piston shaft. A buffer fluid is filled inside the cylinder body and can be discharged to the outside while being pressurized by the piston (153).

[0048] Here, the buffer fluid can be water or oil.

[0049] A fluid discharge port (171) may be formed at the lower part of the cylinder body (155), and a load pressure control valve (175) for controlling the discharge amount of buffer fluid through the fluid discharge port (171) may be installed at the fluid discharge port (171).

[0050] The load pressure control valve (175) can control the fire water supply pressure of the fire water cylinder (150) by the load of the package frame (140) in a manner that controls the discharge amount of buffer fluid.

[0051] For example, when the opening of the load pressure control valve (175) is small, the downward speed of the support cylinder (170) slows down and the pressure of the fire water cylinder (150) also decreases, so the supply pressure of the fire water is lowered, and when the opening of the load pressure control valve (175) is high, the downward speed of the support cylinder (170) speeds up and the pressure of the fire water cylinder (150) increases, so the supply pressure of the fire water can be increased.

[0052] The load pressure control valve (175) may be installed in each support cylinder (170), but the fluid outlet (171) of each support cylinder (170) may be connected to the integrated discharge pipe (173) so that each support cylinder (170) can discharge the buffer fluid in equal amounts, and the load pressure control valve (175) may be installed in the integrated discharge pipe (173) to control the discharge amount of the buffer fluid in an integrated manner.

[0053] When the normal power supply is cut off when the fire pump (110) starts, the load pressure control valve (175) is controlled by the fire controller (190) and opens to a preset opening according to the preset supply pressure of fire water, thereby discharging a buffer fluid so that the package frame (140) can be lowered.

[0055] We will now explain the interactions and effects between each component described above.

[0056] In the fire water supply and drainage device (100) of a building according to an embodiment of the present invention, a fire pump (110), a fuel cell (120), and a fuel tank (130) are installed on the upper part of a package frame (140), and the pump discharge port from which fire water is discharged from the fire pump (110) is connected to a fire pipe (180) by an expansion pipe section (111).

[0057] The suction port of the fire pump (110) is connected to a fire tank (115) in which fire water is stored through a suction hose or suction pipe, and the fire pump (110) is connected to a constant power supply so that the fire pump (110) can be operated through the constant power supply.

[0058] A fuel cell (120) is also electrically connected to the fire pump (110) and operates by receiving emergency power from the fuel cell (120), and the fuel cell (120) can generate power by receiving fuel stored in the fuel tank (130).

[0059] At this time, an emergency valve may be installed between the fuel cell (120) and the fuel tank (130) so that when the power supply is cut off, the fuel in the fuel tank (130) is automatically supplied to the fuel cell (120).

[0060] A fire extinguishing cylinder (150) is installed in the center of the package frame (140), and a support cylinder (170) is installed around the fire extinguishing cylinder (150).

[0061] The fire water cylinder (150) is filled with fire water and supplies fire water to the fire pipe (180) when a load is applied, and the support cylinder (170) is filled with buffer fluid and, when a load is applied, the supply pressure of fire water supplied from the fire water cylinder (150) can be controlled by controlling the discharge amount of buffer fluid through the load pressure control valve (175).

[0062] The fire water discharge port (157) of the fire water cylinder (150) is connected to the fire pipe (180), and the fire water from the fire water cylinder (150) is supplied directly to the fire pipe (180) through the fire water discharge port (157) to suppress the fire.

[0063] In the fire water supply and drainage device (100) of a building according to the embodiment of the present invention configured as described above, when a fire occurs at a fire detection sensor and a sprinkler (183) is activated, the fire pump (110) is operated via a constant power source due to the pressure difference of the alarm valve (181), and fire water stored in the fire tank (115) is supplied to the fire pipe (180). The fire water supplied through the fire pipe (180) enters the fire while being sprayed through the sprinkler (183) at the fire point.

[0064] Meanwhile, when the normal power supply is cut off due to the occurrence of a fire, the fire controller (190) supplies fuel from the fuel tank (130) to the fuel cell (120) to supply emergency power.

[0065] At this time, since it takes time (approximately 30 seconds to 1 minute) for the fuel cell (120) to produce power to start the fire pump (110) even after receiving fuel, the load pressure control valve (175) is opened to suppress the fire during the switching time to supply emergency power from the normal power source.

[0066] When the load pressure control valve (175) is opened, the buffer fluid filled in the support cylinder (170) is released to the outside, reducing the support force of the support cylinder (170). Consequently, the load of the package frame (140) is transferred to the fire water cylinder (150), and the fire water filled in the fire water cylinder (150) is pressurized by the piston (153) and supplied to the fire pipe (180) with increased pressure.

[0067] The firefighting water supplied to the firefighting pipe (180) is sprayed through the sprinkler (183) just like the operation of the fire pump (110) and suppresses the fire during the time of switching to the emergency power supply.

[0068] Meanwhile, when the package frame (140) is lowered by a preset height (=switching time), the switch probe (161) is pressurized, and the power switching switch (160) is activated to start the fire pump (110) using the power from the fuel cell (120), thereby starting the fire pump (110) with the emergency power generated from the fuel cell (120). The fire pump (110), which is started with the emergency power, supplies firefighting water from the fire tank (115) to the fire pipe (180) just as it does with normal power, and extinguishes the fire by spraying it through the sprinkler (183).

[0070] Accordingly, the fire water supply and drainage device (100) of a building according to an embodiment of the present invention can minimize human and property damage by immediately pressurizing and supplying fire water by the load of the package frame (140) in which each device is installed, without separate electrical energy, during the idle time until the fuel cell (120), which is an emergency power source, is activated to produce operating power.

[0071] In addition, the present invention can simplify the structure and increase operational reliability by converting the weight (load) of the entire device into physical pressurized energy by the fire water cylinder (150).

[0072] In addition, the present invention automatically supplies fuel to the fuel cell (120) to produce emergency power when the normal power supply is cut off, and simultaneously discharges buffer fluid through the load pressure control valve (175), thereby supplying firefighting water by load, so the power switching process is automatically performed without separate operation, thus eliminating the hassle of operation.

[0073] In addition, the present invention is configured such that when a power switching switch (160) is installed in a fire water cylinder (150) and the package frame (140) is lowered to a preset height, the power switching switch (160) drives the fire pump (110) with the emergency power of the fuel cell (120), thereby enabling automatic switching of power from mechanical power to electrical power.

[0075] Although embodiments of the present invention have been described above, the scope of the present invention is not limited thereto and includes all changes and modifications within the scope recognized as equivalents that can be easily changed by a person skilled in the art from the embodiments of the present invention. Explanation of the symbols

[0076] 100: Firefighting water supply and drainage system for buildings 110: Fire pump 111: Expansion pipe section 115: Fire tank 120: Fuel cell 130: Fuel tank 140: Package frame 150: Fire water cylinder 151: Piston shaft 153: Piston 155: Cylinder body 157: Fire water discharge port 159: Discharge valve 160: Power transfer switch 161: Switch probe 170: Support cylinder 171: Fluid discharge port 173: Integrated discharge pipe 175: Load pressure control valve 180: Fire piping 181: Alarm valve 183: Sprinkler 190: Fire controller

Claims

Claim 1 A fire pump that pressurizes and supplies firefighting water to a firefighting pipe connected to a sprinkler; a fuel cell that supplies emergency power when the normal power supplied to the fire pump is cut off; a fuel tank in which fuel is filled to supply fuel to the fuel cell; a package frame in which the fire pump, the fuel cell, and the fuel tank are installed together; and a firefighting water cylinder that supports the package frame and pressurizes and supplies firefighting water by the load of the package frame so as to supply firefighting water during the switching time until operating power is produced when fuel is supplied to the fuel cell, wherein the firefighting water cylinder includes a piston shaft supported by the package frame on which a piston that pressurizes the firefighting water is installed, and a cylinder body formed with a supply port in which the firefighting water is filled inside and pressurized by the piston to be supplied to the firefighting pipe, and further includes a plurality of support cylinders that support the package frame together with the firefighting water cylinder, wherein the support cylinders are filled with a buffer fluid inside and a fluid discharge port formed in which the buffer fluid is discharged by the load of the package frame. A support cylinder body; and a load pressure control valve that controls the fire water supply pressure of the fire water cylinder by controlling the flow rate of the buffer fluid discharged through the fluid discharge port to control the downward speed of the package frame; and a power switching switch that controls the fire pump to be driven by switching power to the emergency power of the fuel cell while being mechanically contact pressurized by the package frame at the time when the physically pressurized water in the fire water cylinder is exhausted as the package frame is lowered to a preset height as the load is applied to the package frame.A fire water supply and drainage device for a building, characterized by further including: a plurality of support cylinders installed radially around a fire water cylinder; the fluid discharge port of each support cylinder connected to an integrated discharge pipe so that each support cylinder can discharge the buffer fluid in the same amount; the load pressure control valve installed in the integrated discharge pipe to integrally control the discharge amount of the buffer fluid; the power switching switch including a switch probe configured to be height-adjustable so as to adjust the operating timing of the power switching switch considering the downward speed of the package frame; and an expansion pipe section connecting the pump discharge port from which fire water is discharged from the fire pump and the fire piping in a multi-stage form or flexibly so as to enable height changes according to the vertical movement of the package frame. Claim 2 delete Claim 3 delete Claim 4 delete

Images