Pressure preparation type heptafluoropropane fire extinguishing system

Abstract

The utility model discloses a pressure preparation type heptafluoropropane fire extinguishing system, and relates to the technical field of fire extinguishing. The device comprises a fire detection control unit, a pressure preparation type heptafluoropropane fire extinguishing system unit and a distribution device pipe network, wherein the fire detection control unit comprises a fire extinguishing controller, a sound-light alarm box, an emergency start / stop button, a deflation indicator lamp and a nitrogen start cylinder group; in the utility model, the inlet pressure of the nozzle of the fire extinguishing system is higher, the spraying time of the fire extinguishing agent is shortened, the fire can be extinguished more quickly and efficiently, the heptafluoropropane fire extinguishing agent is sprayed into a protection area in a liquid form, and when sprayed out of the nozzle, the liquid fire extinguishing agent is quickly converted into a gas state and needs to absorb a large amount of heat; gas around a protection area and flames is greatly cooled, part of bonds in molecules are broken during fire extinguishing and need to absorb heat, meanwhile, the concentration of oxygen is reduced through injection of the fire extinguishing agent in the protection area and existence of the flames, and therefore the combustion speed is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire extinguishing technology field, concretely is a kind of standby type heptafluoro-propane fire extinguishing system. BACKGROUND

[0002] Fire extinguishing system refers to the group of multiple fire extinguishing (device) device, it is mutually associated according to the rule of prearranged through connection, forms a whole.It is according to the starting mode (temperature sensing, smoke sensing etc.) of setting, single start, multiple start or simultaneously start fire extinguisher (device) in this system to reach the fire extinguishing system that single fire extinguisher (device) cannot complete alone;

[0003] However, the fire extinguishing system in prior art still has some defects:

[0004] 1, the fire extinguishing system in prior art, the delivery distance of fire extinguishing agent is limited, so it cannot be applied to large space protection area fire extinguishing, meanwhile, the pipe diameter of fire extinguishing agent delivery pipeline is large, cannot save system cost;

[0005] 2, the pressure at nozzle of the fire extinguishing system in prior art is low, when extinguishing, fire extinguishing operation time is long, so as to cause low extinguishing efficiency, cannot realize efficient fire extinguishing;

[0006] 3, the fire extinguishing system in prior art mostly cannot inject heptafluoro-propane in liquid form to protection area, so as to cannot effectively reduce the oxygen concentration of protection area, so as to cannot quickly suppress combustion. UTILITY MODEL CONTENT

[0007] In order to solve the above problems, the purpose of the utility model is to provide a kind of standby type heptafluoro-propane fire extinguishing system.

[0008] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of standby type heptafluoro-propane fire extinguishing system, the fire extinguishing system includes fire detection control unit, standby type heptafluoro-propane fire extinguishing system unit and distribution device pipe network;

[0009] The fire detection control unit includes fire extinguishing controller, audible and visual alarm box, emergency start / cutoff button, gas release indicator light and nitrogen starting bottle group;

[0010] The standby type heptafluoro-propane fire extinguishing system unit includes fire extinguishing agent storage cylinder, nitrogen drive cylinder, container valve, one-way pressure release, liquid level meter, nitrogen delivery pipeline assembly, connecting pipe and one-way valve;

[0011] The distribution device pipe network includes selection valve, pipe network group, nozzle, temperature sensor and smoke sensor.

[0012] Preferably, the standby type heptafluoro-propane fire extinguishing system unit and pipe network group and nozzle are communicated.

[0013] Preferably, the container valve is used for releasing the fire extinguishing agent storage cylinder;

[0014] The one-way pressure release device releases nitrogen in the gaseous space, and pushes the medicament out of the fire extinguishing agent storage cylinder through the siphon tube;

[0015] The liquid level gauge is used for reading the net weight of the fire extinguishing agent in the fire extinguishing agent storage cylinder;

[0016] The nitrogen driving cylinder is used for storing high-pressure nitrogen, and provides continuous nitrogen supply during the discharge of the heptafluoropropane fire extinguishing agent;

[0017] The nitrogen delivery pipeline assembly comprises a pressure reduction fitting for reducing the pressure of the high-pressure nitrogen, and delivering the nitrogen into the fire extinguishing agent storage cylinder;

[0018] The connecting pipe is used for connecting the container valve and the one-way valve;

[0019] The one-way valve is used for controlling the flow direction of the fire extinguishing agent.

[0020] Preferably, the nitrogen starting bottle group comprises a nitrogen storage container for containing starting nitrogen and an electric starting valve for releasing the starting nitrogen.

[0021] Preferably, the nozzle is used for controlling the flow of the fire extinguishing agent.

[0022] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0023] 1、 in the utility model, the farthest fire extinguishing agent delivery distance of the fire extinguashing system can reach 230m, and it is more suitable for long-distance delivery and large space protection area, the filling density of the fire extinguishing agent bottle group is improved, the maximum filling density is 1249kg / m3, the container can be effectively utilized, it is more economical and the area between equipment is reduced, simultaneously, the pipe diameter of the fire extinguishing agent delivery pipeline is reduced, and the cost is saved;

[0024] 2、 in the utility model, the inlet pressure of the nozzle of the fire extinguishing system is relatively high, the discharge time of the fire extinguishing agent is shortened, and the fire can be extinguished more quickly and efficiently;

[0025] 3、 in the utility model, the heptafluoropropane fire extinguishing agent is sprayed in the liquid state into the protection area, when being sprayed out of the nozzle, the liquid fire extinguishing agent is quickly changed into the gaseous state and needs to absorb a large amount of heat, the protection area and the gas around the flame are greatly cooled, a part of the bond in the molecule is broken during extinguishing and needs to absorb heat, simultaneously, the spraying of the fire extinguishing agent in the protection area and the existence of the flame reduce the oxygen concentration, thereby reducing the burning speed. BRIEF DESCRIPTION OF DRAWINGS

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Fig. 1 This is a schematic diagram of the composition of a pressurized heptafluoropropane fire extinguishing system according to the present invention.

[0028] Fig. 2 This is a schematic diagram of the structure of the standby pressurized heptafluoropropane fire extinguishing system unit and distribution device pipeline network of this utility model.

[0029] In the diagram: 1. Fire detection and control unit; 2. Standby pressurized heptafluoropropane fire extinguishing system unit; 3. Distribution device piping network; 11. Fire extinguishing controller; 12. Audible and visual alarm box; 13. Emergency start / stop button; 14. Gas release indicator light; 15. Nitrogen start cylinder group; 21. Extinguishing agent storage cylinder; 22. Nitrogen drive cylinder; 23. Container valve; 24. One-way pressure relief device; 25. Liquid level gauge; 26. Nitrogen delivery pipeline assembly; 27. Connecting pipe; 28. One-way valve; 31. Selector valve; 32. Piping network group; 33. Nozzle; 34. Heat detector; 35. Smoke detector. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example: Figs. 1-2 As shown, this utility model provides a pressurized heptafluoropropane fire extinguishing system, which includes a fire detection and control unit 1, a pressurized heptafluoropropane fire extinguishing system unit 2, and a distribution device pipeline 3.

[0032] The fire detection and control unit 1 includes a fire extinguishing controller 11, an audible and visual alarm box 12, an emergency start / stop button 13, a gas release indicator light 14, and a nitrogen start cylinder group 15. The nitrogen start cylinder group 15 includes a nitrogen storage container and an electric start valve. The nitrogen storage container is used to hold start nitrogen, and the electric start valve releases start nitrogen.

[0033] The unit 2 of the standby heptafluoropropane fire extinguishing system comprises a fire extinguishing agent storage cylinder 21, a nitrogen driving cylinder 22, a cylinder valve 23, a one-way pressure release device 24, a liquid level gauge 25, a nitrogen delivery pipeline assembly 26, a connecting pipe 27 and a one-way valve 28. The nitrogen driving cylinder 22 is used for storing high-pressure nitrogen to provide continuous nitrogen supply during heptafluoropropane fire extinguishing agent discharge. The cylinder valve 23 is used for releasing the fire extinguishing agent storage cylinder 21. The one-way pressure release device 24 releases nitrogen in the gaseous space to push the agent out of the fire extinguishing agent storage cylinder 21 through a siphon pipe. The liquid level gauge 25 is used for reading the net weight of the fire extinguishing agent in the fire extinguishing agent storage cylinder 21. The nitrogen delivery pipeline assembly 26 comprises a pressure reduction fitting for reducing the pressure of the high-pressure nitrogen and delivering the nitrogen to the fire extinguishing agent storage cylinder 21. The connecting pipe 27 is used for connecting the cylinder valve 23 and the one-way valve 28. The one-way valve 28 is used for controlling the flow direction of the fire extinguishing agent.

[0034] The distribution device pipeline network 3 comprises a selection valve 31, a pipeline network group 32, a nozzle 33, a temperature sensing detector 34 and a smoke sensing detector 35. The unit 2 of the standby heptafluoropropane fire extinguishing system is connected to the pipeline network group 32 and the nozzle 33. The nozzle 33 is used for controlling the flow of the fire extinguishing agent.

[0035] Working principle: when the fire extinguishing system is used, in the automatic starting state:

[0036] The control mode of the fire extinguishing controller 11 is set to the "automatic" position, and the entire fire extinguishing system is in the automatic control state. When a fire occurs in the protected area, the temperature sensing detector 34 and the smoke sensing detector 35 detect and send a signal to the fire extinguishing controller 11. The fire extinguishing controller 11 controls the sound and light alarm box 12 to send an evacuation alarm signal, and controls the linkage equipment (fans, air conditioners, etc.). After a delay (0-30s), the fire extinguishing controller 11 sends a fire extinguishing command to open the nitrogen starting cylinder group 15 to release the starting gas, open the selection valve 31 and the cylinder valve 23 of the corresponding protected area to release the fire extinguishing agent, and implement fire extinguishing.

[0037] In the manual starting state:

[0038] When the control mode of the fire extinguishing controller 11 is set to the "manual" position, the entire fire extinguishing system is in the manual control state. When a fire occurs in the protected area, the temperature sensing detector 34 and the smoke sensing detector 35 detect and send a signal to the fire extinguishing controller 11. The fire extinguishing controller 11 controls the sound and light alarm box 12 to send an evacuation alarm signal. After the on-site personnel confirm that it is a fire, the emergency start / shutoff button 13 on the fire extinguishing controller 11 is pressed. The fire extinguishing controller 11 controls the linkage equipment (fans, air conditioners, etc.). After a delay (0-30s), the fire extinguishing controller 11 sends a fire extinguishing command to open the nitrogen starting cylinder group 15 to release the starting gas, open the selection valve 31 and the cylinder valve 23 of the corresponding protected area to release the fire extinguishing agent, and implement fire extinguishing.

[0039] The mechanical starting mode of the fire extinguishing system has two modes:

[0040] The mechanical emergency starting mode of the fire extinguishing system has two modes:

[0041] In the case of electric (automatic and manual) failure, the personnel in the protection area evacuate, and the specific operator first closes the linkage device, windows and other unnecessary openings, pulls out the safety pin on the nitrogen starting bottle group 15 of the corresponding protection area, presses down the push rod to release the starting gas, and then opens the selection valve 31 and the container valve 23 to release the fire extinguishing agent and implement fire extinguishing.

[0042] In the case of pneumatic failure (leakage of the nitrogen-driven steel cylinder 22), the personnel in the protection area evacuate, and the specific operator first closes the linkage device, windows and other unnecessary openings, rotates the handle on the selection valve 31 of the corresponding protection area to the "open" position, pulls out the safety pin on the fire extinguishing agent storage steel cylinder 21 of the corresponding protection area, and presses down the push rod to release the fire extinguishing agent, and then opens the selection valve 31 and the fire extinguishing agent storage steel cylinder 21 to release the fire extinguishing agent and implement fire extinguishing.

[0043] In the case of emergency stop operation, when the fire extinguishing system issues a fire alarm or has been manually started, and an abnormal situation (false alarm, personnel not evacuating in time, etc.) is found within the delay time of the fire extinguishing system, the fire extinguishing agent does not need to be released, and the emergency starting / stop button 13 at the door of the protection area can be pressed to prevent the fire extinguishing controller 11 from issuing a fire extinguishing instruction.

[0044] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A pressurized heptafluoro-propane fire extinguishing system, characterized in that: The fire extinguishing system comprises a fire detection control unit (1), a backup type heptafluoropropane fire extinguishing system unit (2) and a distribution device pipe network (3); The fire detection control unit (1) comprises a fire extinguishing controller (11), an audible and visual alarm box (12), an emergency start / stop button (13), a gas release indicator lamp (14) and a nitrogen starting bottle group (15); The backup type heptafluoropropane fire extinguishing system unit (2) comprises a fire extinguishing agent storage cylinder (21), a nitrogen driving cylinder (22), a container valve (23), a one-way pressure release device (24), a liquid level meter (25), a nitrogen delivery pipeline assembly (26), a connecting pipe (27) and a one-way valve (28); The distribution device pipe network (3) comprises a selection valve (31), a pipe network group (32), a nozzle (33), a temperature sensor (34) and a smoke sensor (35).

2. A stored pressure heptafluoropropane fire extinguishing system as defined in claim 1 wherein, The backup type heptafluoropropane fire extinguishing system unit (2) is connected with the pipe network group (32) and the nozzle (33).

3. A stored pressure heptafluoropropane fire extinguishing system as set forth in claim 1 wherein, The container valve (23) is used for releasing the fire extinguishing agent storage cylinder (21); The one-way pressure release device (24) releases nitrogen in the gaseous space, and pushes the agent out of the fire extinguishing agent storage cylinder (21) through a siphon pipe; The liquid level meter (25) is used for reading the net weight of the fire extinguishing agent in the fire extinguishing agent storage cylinder (21); The nitrogen driving cylinder (22) is used for storing high-pressure nitrogen, and provides continuous nitrogen supply when the heptafluoropropane fire extinguishing agent is sprayed; The nitrogen delivery pipeline assembly (26) comprises a pressure reducing fitting, which is used for reducing the pressure of high-pressure nitrogen and delivering nitrogen to the fire extinguishing agent storage cylinder (21); The connecting pipe (27) is used for connecting the container valve (23) and the one-way valve (28); The one-way valve (28) is used for controlling the flow direction of the fire extinguishing agent.

4. A stored pressure heptafluoro-propane fire extinguishing system as defined in claim 1 wherein, The nitrogen starting bottle group (15) comprises a nitrogen storage container and an electric starting valve, the nitrogen storage container is used for containing starting nitrogen, and the electric starting valve releases the starting nitrogen.

5. A stored pressure heptafluoropropane fire extinguishing system as set forth in claim 1 wherein, The nozzle (33) is used for controlling the flow of the fire extinguishing agent.

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