Pressure storage gas fire extinguishing system

Abstract

The utility model belongs to the technical field of fire fighting, and particularly relates to a pressure storage gas fire extinguishing system which comprises a nitrogen cylinder chamber and a gas cylinder chamber, a plurality of nitrogen cylinders are assembled in the nitrogen cylinder chamber, a plurality of pressure storage fire extinguishers are assembled in the gas cylinder chamber, first cylinder head valves are assembled on the tops of the nitrogen cylinders and the tops of the pressure storage fire extinguishers, and second cylinder head valves are assembled on the tops of the pressure storage fire extinguishers. An opening piece is assembled on the outer side of the first bottle head valve on the nitrogen bottle and used for opening the first bottle head valve on the nitrogen bottle, the end, away from the pressure storage fire extinguisher, of the first bottle head valve on the pressure storage fire extinguisher is connected with an outlet pipeline, and the end, away from the first bottle head valve on the pressure storage fire extinguisher, of the outlet pipeline is connected with a collecting pipe. The outer side of the first bottle head valve on the nitrogen bottle is further connected with a driving gas outlet pipeline, and the end, away from the first bottle head valve on the nitrogen bottle, of the driving gas outlet pipeline communicates with a selection valve. The fire extinguishing device can extinguish fire efficiently and economically, achieves a rapid and environment-friendly fire extinguishing effect, and meanwhile reduces damage to equipment and fire extinguishing cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire protection, and in particular relates to a pressure storage gas fire extinguishing system. Background Art

[0002] With the development of modern society, fire accidents occur frequently, posing a serious threat to people's lives and property. In order to solve this problem, scientists continue to explore and research innovative fire extinguishing technologies. Among them, external pressurized gas fire extinguishing technology, as an efficient and environmentally friendly fire extinguishing solution, has gradually received widespread attention and application.

[0003] The basic principle of external pressurized gas fire extinguishing technology is to use the chemical properties of specific gases to increase the gas concentration and adjust the speed and temperature of flame propagation, so as to achieve the effect of rapid fire extinguishing. The gas in this fire extinguishing technology is usually colorless, odorless, has good electrical properties and is non-conductive, so it will not corrode equipment and will not react with most substances.

[0004] For example, carbon dioxide, as a common inert gas, reduces the intensity of flame combustion mainly through suffocation during fire extinguishing, while chemical gases such as heptafluoropropane can suppress the combustion process through pyrolysis products, achieving rapid fire extinguishing;

[0005] However, despite the many advantages of external pressurized gas fire extinguishing technology, there are still some challenges in practical application. For example, the price of gas is relatively high, which increases the cost of fire extinguishing. In addition, the traditional external pressurized gas fire extinguishing system may cause certain damage to the equipment, especially when used in high temperature environment.

[0006] Therefore, how to reduce fire extinguishing costs and damage to equipment while ensuring the fire extinguishing effect has become an urgent problem to be solved in the current external storage pressurized gas fire extinguishing technology. Utility Model Content

[0007] The utility model aims to provide a pressure storage gas fire extinguishing system, which can extinguish fires efficiently and economically, achieves a rapid and environmentally friendly fire extinguishing effect, and at the same time reduces damage to equipment and fire extinguishing costs.

[0008] The technical solution adopted by the utility model is as follows:

[0009] A pressure storage gas fire extinguishing system, comprising a nitrogen cylinder room and a gas cylinder room, wherein the nitrogen cylinder room is equipped with a plurality of nitrogen cylinders, and the gas cylinder room is equipped with a plurality of pressure storage fire extinguishers;

[0010] The top of each nitrogen cylinder and each pressure storage fire extinguisher is equipped with a first cylinder head valve, and the outer side of the first cylinder head valve on the nitrogen cylinder is equipped with an opening piece, and the opening piece is used to open the first cylinder head valve on the nitrogen cylinder;

[0011] An end of the first bottle head valve on the pressure storage fire extinguisher away from the pressure storage fire extinguisher is connected to an outlet pipeline, and an end of the outlet pipeline away from the first bottle head valve on the pressure storage fire extinguisher is connected to a manifold;

[0012] The outer side of the first bottle head valve on the nitrogen cylinder is also connected to a driving gas outlet pipeline, and one end of the driving gas outlet pipeline away from the first bottle head valve on the nitrogen cylinder is connected to a selection valve, and the outlet of each selection valve is respectively connected to a driving gas pipe, and each selection valve is connected to the manifold;

[0013] A second bottle head valve is also provided on the top of each of the pressure storage fire extinguishers, and each of the driving air pipes is connected to the second bottle head valve on at least one of the pressure storage fire extinguishers;

[0014] One end of the selection valve away from the manifold and the driving air pipe is connected to a branch pipe network, and the number of the branch pipe networks corresponds to the selection valve.

[0015] The opening member is a manual start switch, which is assembled on the top of the first bottle head valve on the nitrogen bottle.

[0016] The opening member is a solenoid valve, which is arranged on the outside of the first bottle head valve on the nitrogen bottle.

[0017] A safety valve is arranged at the end of one end of the collecting pipe.

[0018] A low-pressure high-resistance valve is also installed on the outer side of the driving air pipe and close to the first bottle head valve on the nitrogen bottle.

[0019] Each branch pipe network is equipped with a pressure feedback device inside.

[0020] One end of each branch pipe network away from the selection valve is connected with a branch pipe and a nozzle.

[0021] Sealing moisture-proof pads are arranged on the inner walls of the nitrogen cylinder room and the gas cylinder room.

[0022] The technical effects achieved by the utility model are:

[0023] The utility model adopts efficient and economical fire extinguishing agent, and achieves rapid and environmentally friendly fire extinguishing effect by optimizing system design and control mode, while reducing damage to equipment and fire extinguishing cost. It not only improves fire extinguishing efficiency, but also helps to reduce the threat of fire accidents to people’s life and property safety, and has important practical significance and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the system layout of the utility model;

[0025] Figure 2 It is a logic scheme diagram in the utility model.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Nitrogen drive bottle A; 2. Nitrogen drive bottle B; 3. Nitrogen drive bottle N; 4. Pressure storage fire extinguisher A; 5. Pressure storage fire extinguisher B; 6. Pressure storage fire extinguisher C; 7. Pressure storage fire extinguisher D; 8. Pressure storage fire extinguisher N; 9. Gas cylinder room; 10. Second bottle head valve; 11. Outlet pipeline; 12. Drive gas pipe N; 13. Safety valve; 14. Manifold; 15. Drive gas pipe B; 16. Drive gas pipe A; 17. Branch pipe network N; 18. Branch pipe network B; 19. Nozzle; 20. Branch pipe; 21. Branch pipe network A; 22. Pressure feedback; 23. Selection valve; 24. Drive gas outlet pipeline; 25. Manual start switch; 26. Low-pressure high-resistance valve; 27. First bottle head valve; 28. Nitrogen cylinder room. DETAILED DESCRIPTION

[0028] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0029] Embodiment 1:

[0030] like Figure 1As shown, a pressure storage gas fire extinguishing system includes a nitrogen cylinder room 28 and a gas cylinder room 9, wherein the nitrogen cylinder room 28 is equipped with a plurality of nitrogen cylinders, wherein the nitrogen cylinders are provided with a nitrogen drive bottle A1, a nitrogen drive bottle B2 ... a nitrogen drive bottle N3, wherein the gas cylinder room 9 is equipped with a plurality of pressure storage fire extinguishers, wherein the pressure storage fire extinguishers are provided with a pressure storage fire extinguisher A4, a pressure storage fire extinguisher B5, a pressure storage fire extinguisher C6, a pressure storage fire extinguisher D7 ... a pressure storage fire extinguisher N8, and the inner walls of the nitrogen cylinder room 28 and the gas cylinder room 9 are provided with sealing moisture-proof pads, wherein the sealing moisture-proof pads can be made of a rubber pad or other material with good sealing and moisture-proof properties, and of course, can also be made of other materials, thereby making the sealing and moisture-proof effects of the nitrogen cylinder room 28 and the gas cylinder room 9 good, preventing the nitrogen cylinders and the pressure storage fire extinguishers from getting damp, and reducing their service life;

[0031] Each nitrogen cylinder and each pressure storage fire extinguisher is equipped with a first cylinder head valve 27 on the top, and an opening piece is installed on the outer side of the first cylinder head valve 27 on the nitrogen cylinder, and the opening piece is used to open the first cylinder head valve 27 on the nitrogen cylinder;

[0032] The end of the first bottle head valve 27 on the pressure storage fire extinguisher away from the pressure storage fire extinguisher is connected to the outlet pipeline 11, and the end of the outlet pipeline 11 away from the first bottle head valve 27 on the pressure storage fire extinguisher is connected to the manifold 14, the manifold 14 is used to collect multiple outlet pipelines 11, and a safety valve 13 is provided at the end of one end of the manifold 14;

[0033] The outer side of the first bottle head valve 27 on the nitrogen bottle is also connected to a driving gas outlet pipeline 24, and one end of the driving gas outlet pipeline 24 away from the first bottle head valve 27 on the nitrogen bottle is connected to a selection valve 23, and the selection valve 23 is opened and closed by nitrogen driving, and each selection valve 23 is connected to a driving air pipe at its outlet, and the driving air pipe is provided with a driving air pipe B15, a driving air pipe A16...driving air pipe N12, and each selection valve 23 is connected to the manifold 14;

[0034] A second bottle head valve 10 is also provided on the top of each pressure storage fire extinguisher, and each driving gas pipe is connected to the second bottle head valve 10 on at least one pressure storage fire extinguisher. A plurality of pressure storage fire extinguishers can be arranged inside the gas cylinder room 9 according to demand, and a corresponding number of nitrogen cylinders can be arranged inside the nitrogen cylinder room 28;

[0035] A low-pressure high-resistance valve 26 is also installed on the outside of the driving air pipe and close to one side of the first bottle head valve 27 on the nitrogen bottle. The low-pressure high-resistance valve 26 is used to prevent the system from malfunctioning due to the accumulation of gas leakage in the driving air pipe. The low-pressure high-resistance valve 26 arranged in the driving air pipe is installed on the driving air pipe for system startup. It is in an open state under normal circumstances and is closed only when the inlet pressure reaches the set pressure. Its main function is to remove the gas accumulated in the startup pipeline due to gas source leakage.

[0036] The selector valve 23 is a three-way valve, two of which are connected to the manifold 14 and one of the driving air pipes respectively, and the other is connected to a branch pipe network, the number of which is set to branch pipe network N17, branch pipe network B18...branch pipe network A21, and the number of the branch pipe networks corresponds to the selector valve 23;

[0037] Each branch pipe network is equipped with a pressure feedback 22 for feeding back the pressure of the sprayed gas;

[0038] One end of each branch pipe network away from the selection valve 23 is connected with a branch pipe 20 and a nozzle 19, and the branch pipe 20 and the nozzle 19 are used for fire extinguishing.

[0039] The gas fire extinguishing agent has a dual fire extinguishing mechanism of chemical fire extinguishing and physical fire extinguishing, with low fire extinguishing concentration and high fire extinguishing efficiency. The chemical formula of the gas can be CF3-hfc-CF3 or C3HF7, with a melting point of about 131 degrees Celsius and a boiling point of 16.4 degrees Celsius. It is slightly soluble in water at 260 mg per liter;

[0040] Physical inhibition: When an open flame occurs, the gas can quickly reduce the temperature within the area, so that the temperature in the area cannot reach the temperature required for combustion; Chemical inhibition: The gas fire extinguishing agent can inert the active free radicals in the flame and block the chain reaction during combustion. The combination of the two can achieve the purpose of fire extinguishing;

[0041] The chemical formula of the gas is CF3-hfc-CF3 or C3HF7. Since the gas does not contain chlorine or bromine, it does not contain particles or oily residues after release, has no destructive effect on the atmospheric ozone layer, has an ODP value of zero, and stays in the atmosphere for 31-42 years, which meets environmental protection requirements.

[0042] In addition, gas fire extinguishing agents are colorless, odorless, low-toxic, non-conductive, do not pollute the protected objects, will not cause damage to property and precision facilities, and can reliably extinguish Class B and C fires and electrical fires at a lower fire extinguishing concentration.

[0043] Embodiment 2:

[0044] Please see attached Figure 1 As shown, this embodiment is used to introduce the opening member in Embodiment 1, and the opening member can be a manual start switch 25, and the manual start switch 25 is assembled on the top of the first bottle head valve 27 on the nitrogen bottle, and is used to manually control the opening and closing of the manual start switch 25, thereby opening or closing the first bottle head valve 27 on the nitrogen bottle.

[0045] Embodiment 3:

[0046] Please see attached Figure 1As shown, the difference between this embodiment and embodiment 2 lies in the selection of the opening member, which can be a solenoid valve, which is arranged on the outside of the first bottle head valve 27 on the nitrogen bottle and is used to electrically and automatically control the opening and closing of the solenoid valve, thereby opening or closing the first bottle head valve 27 on the nitrogen bottle.

[0047] Embodiment 4:

[0048] Please see attached Figure 2 As shown, this implementation is mainly for the above-mentioned embodiment to illustrate the fire extinguishing scheme, the specific steps are as follows:

[0049] When a fire occurs, the indoor temperature detector and smoke detector will receive the alarm and then feed it back to the fire receiving display panel; according to the different setting values ​​of temperature, CO and VOC, there are two levels of alarm;

[0050] The first-level alarm fire display panel records information internally;

[0051] The second-level alarm starts the fire notification, the sound and light alarm, the fire receiving display panel linkage equipment shuts down the fan and equipment, turns on the emergency lighting, closes the doors, windows and openings, and after 30 seconds of the sound and light alarm, the personnel evacuate in time and close the passage door. The fire receiving display panel displays the start, the fire extinguishing control panel is turned to automatic, and the fire extinguishing control panel is fed back to start the automatic spraying program;

[0052] When the spraying program is started, according to the alarm data of the temperature detectors and smoke detectors in each area, the fire receiving display panel opens the first bottle head valve 27 in the nitrogen cylinder in the corresponding area, such as the first bottle head valve 27 on the nitrogen driving bottle A1, and the gas flows from the first bottle head valve 27 to the driving gas outlet pipeline 24 and then to the corresponding selection valve 23. The selection valve 23 opens the actuator through the driving gas pressure and opens the selection valve 23;

[0053] At the same time, the driving gas is discharged to the driving gas pipe A16 through the actuator of the selector valve 23, and the driving gas reaches the pressure storage fire extinguisher from the driving gas pipe A16. The driving gas enters the siphon of the pressure storage fire extinguisher to press out the fire extinguishing gas in the pressure storage fire extinguisher, and the pressed fire extinguishing gas is collected to the manifold 14 through the outlet pipeline 11;

[0054] When the pressure of the manifold 14 is too high, the pressure can be released through the safety valve 13, and the fire extinguishing gas reaches the opened selector valve 23 through the manifold 14, and the fire extinguishing gas enters the branch pipe network through the selector valve 23, and the fire extinguishing gas reaches the branch pipe 20 and the nozzle 19 through the branch pipe network, and sprays the fire at the nozzle 19;

[0055] The principles for other nitrogen cylinders are the same as above;

[0056] After the fire is extinguished, the linked fan is started for ventilation, and the passage doors, doors and windows are opened;

[0057] This solution can also be started manually. When a fire occurs, the personnel visually observe the fire, switch the fire extinguishing control panel from automatic to manual, press the start button in the manual operation panel, and the signal is fed back to the fire receiving display panel to start the spraying program. The spraying program is the same as above. When the fire is extinguished or some personnel have not evacuated, the personnel can press the brake button on the manual operation panel to stop the spraying program. When the personnel have evacuated, they can press the start button again.

[0058] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A pressure storage gas fire extinguishing system, comprising a nitrogen cylinder room (28) and a gas cylinder room (9), characterized in that: The nitrogen cylinder room (28) is equipped with a plurality of nitrogen cylinders, and the gas cylinder room (9) is equipped with a plurality of pressure storage fire extinguishers; The top of each nitrogen cylinder and each pressure storage fire extinguisher is equipped with a first cylinder head valve (27), and the outer side of the first cylinder head valve (27) on the nitrogen cylinder is equipped with an opening piece, and the opening piece is used to open the first cylinder head valve (27) on the nitrogen cylinder; An end of the first bottle head valve (27) on the pressure storage fire extinguisher away from the pressure storage fire extinguisher is connected to an outlet pipeline (11), and an end of the outlet pipeline (11) away from the first bottle head valve (27) on the pressure storage fire extinguisher is connected to a manifold (14); The outer side of the first bottle head valve (27) on the nitrogen bottle is also connected to a driving gas outlet pipeline (24), one end of the driving gas outlet pipeline (24) away from the first bottle head valve (27) on the nitrogen bottle is connected to a selection valve (23), and the outlet of each selection valve (23) is respectively connected to a driving gas pipe, and each selection valve (23) is connected to the manifold (14); A second bottle head valve (10) is also provided on the top of each of the pressure storage fire extinguishers, and each of the driving air pipes is connected to the second bottle head valve (10) on at least one of the pressure storage fire extinguishers; One end of the selector valve (23) away from the manifold (14) and the driving air pipe is connected to a branch pipe network, and the number of the branch pipe networks corresponds to the selector valve (23).

2. A pressurized gas fire extinguishing system according to claim 1, characterized in that: The opening member is a manual start switch (25), and the manual start switch (25) is assembled on the top of the first bottle head valve (27) on the nitrogen bottle.

3. A pressurized gas fire extinguishing system according to claim 1, characterized in that: The opening member is a solenoid valve, which is arranged on the outside of the first bottle head valve (27) on the nitrogen bottle.

4. A pressurized gas fire extinguishing system according to claim 1, characterized in that: A safety valve (13) is provided at the end of one end of the collecting pipe (14).

5. A pressurized gas fire extinguishing system according to claim 1, characterized in that: A low-pressure high-resistance valve (26) is also installed on the outer side of the driving air pipe and close to the first bottle head valve (27) on the nitrogen bottle.

6. A pressurized gas fire extinguishing system according to claim 1, characterized in that: Each branch pipe network is equipped with a pressure feedback (22) inside.

7. A pressurized gas fire extinguishing system according to claim 1, characterized in that: One end of each branch pipe network away from the selection valve (23) is connected with a branch pipe (20) and a nozzle (19).

8. A pressurized gas fire extinguishing system according to claim 1, characterized in that: Sealing moisture-proof pads are provided on the inner walls of the nitrogen bottle chamber (28) and the gas bottle chamber (9).

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