Perfluorohexanone automatic fire extinguishing device

Abstract

The utility model discloses a perfluorohexanone automatic fire extinguishing device which comprises a box body, a perfluorohexanone liquid storage tank and a storage barrel are fixed in the box body, a sleeve is fixed to the top of the perfluorohexanone liquid storage tank in a penetrating mode, a piston is connected to the interior of the sleeve in a sliding and sleeved mode, a compressed nitrogen storage tank is connected to the interior of the storage barrel in a sleeved mode, and the compressed nitrogen storage tank is connected to the interior of the box body in a sleeved mode. A venturi tube is fixed inside the box body through a support, an inlet of the venturi tube is communicated with an outlet of a compressed nitrogen storage tank through a first conveying pipe, a first electromagnetic valve is installed on a pipe section of the first conveying pipe, an injection opening of the venturi tube is communicated with a perfluorohexanone liquid storage tank through a second conveying pipe, and a second electromagnetic valve is installed on a pipe section of the second conveying pipe. And a second electromagnetic valve is installed on the pipe section of the second conveying pipe, and an outlet of the Venturi pipe communicates with a spray head through a hose. The device can be repeatedly used, and is simple to operate and convenient to control.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing devices, in particular to a perfluoromethylcyclohexanone automatic fire extinguishing device. Background Art

[0002] The perfluoromethylcyclohexanone fire extinguishing agent has a low fire extinguishing concentration, a short fire extinguishing time and high fire extinguishing efficiency; its heat of vaporization is only 1 / 25 of that of water, and its vapor pressure is 25 times that of water. These properties make it easy to vaporize and exist in a gaseous state, and it mainly relies on heat absorption to achieve the fire extinguishing effect. Perfluoromethylcyclohexanone itself is not flammable, does not support the combustion process, and is safer for the human body during use, with a high safety margin. The perfluoromethylcyclohexanone fire extinguishing agent is widely used in fire protection in places such as computer rooms, data centers, aviation, ships, vehicles, libraries, oil production and natural gas production.

[0003] At present, the triggering method of perfluoromethylcyclohexanone is often to ignite the electric initiator inside the device after receiving the start signal, and then ignite the driving agent inside the device to generate a large amount of gas, increasing the pressure in the driving chamber, and pushing the piston inside the device towards the outlet end. When the pressure rises to 1.2 Mpa, the bursting disc at the front end of the device breaks, and the fire extinguishing agent is released into the protected area through the nozzle. Such a method is not convenient for controlling the fire extinguishing process, and the device cannot be reused. To better solve this problem, we propose a perfluoromethylcyclohexanone automatic fire extinguishing device. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a perfluoromethylcyclohexanone automatic fire extinguishing device.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A perfluoromethylcyclohexanone automatic fire extinguishing device includes a box body. Inside the box body, a perfluoromethylcyclohexanone storage tank and a storage cylinder are fixed. The top of the perfluoromethylcyclohexanone storage tank is fixedly penetrated by a sleeve. A piston is slidably sleeved inside the sleeve. A compressed nitrogen storage tank is sleeved inside the storage cylinder. A Venturi tube is fixed inside the box body through a bracket. The inlet of the Venturi tube is communicated with the outlet of the compressed nitrogen storage tank through a first delivery pipe. A first electromagnetic valve is installed on the pipe section of the first delivery pipe. The injection port of the Venturi tube is communicated with the perfluoromethylcyclohexanone storage tank through a second delivery pipe. A second electromagnetic valve is installed on the pipe section of the second delivery pipe. The outlet of the Venturi tube is communicated with a nozzle through a hose.

[0007] Preferably, convex platforms are fixed at the four corners of the bottom of the box body, and bolt holes are provided on the convex platforms.

[0008] Preferably, an operation hole is provided on the top of the box body, and a cover plate is hinged inside the operation hole.

[0009] Preferably, an orifice plate is fixedly sleeved at the inner top of the sleeve, and a plurality of limiting blocks are fixed at the inner bottom of the sleeve.

[0010] Preferably, the piston and the sleeve are sealed by a sealing ring.

[0011] Preferably, a liquid adding pipe is communicated with the top of the perfluoromethylcyclohexanone liquid storage tank, and a pipe cap is installed on the liquid adding pipe.

[0012] Preferably, a mounting plate is fixed on the spray head.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. In the utility model, the boss on the box body is fixed at a designated position through bolts, and the spray head is fixed at a designated position through the mounting plate, so as to realize directional fire extinguishing;

[0015] 2. In the utility model, when an external sensor detects a fire disaster, the first electromagnetic valve and the second electromagnetic valve are opened, and the compressed nitrogen in the compressed nitrogen storage tank is sent into the venturi tube through the first delivery pipe. At this time, negative pressure is generated through the venturi tube, and the perfluoromethylcyclohexanone liquid in the perfluoromethylcyclohexanone liquid storage tank is pumped into the venturi tube through the second delivery pipe and mixed with nitrogen, and then is sprayed out through the hose by the spray head, so as to realize automatic fire extinguishing;

[0016] 3. In the utility model, during the process of pumping out the perfluoromethylcyclohexanone liquid, the piston continuously moves downward to balance the pressure inside the perfluoromethylcyclohexanone liquid storage tank, avoiding deformation of the perfluoromethylcyclohexanone liquid storage tank. The provided orifice plate and limiting blocks ensure that the piston only moves between the orifice plate and the limiting blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a cross-sectional view of a perfluoromethylcyclohexanone automatic fire extinguishing device proposed by the utility model;

[0018] Figure 2 The figure is a cross-sectional view of the perfluoromethylcyclohexanone liquid storage tank of a perfluoromethylcyclohexanone automatic fire extinguishing device proposed by the utility model.

[0019] In the figure: 1 box body, 2 boss, 3 perfluoromethylcyclohexanone liquid storage tank, 4 cover plate, 5 storage cylinder, 6 compressed nitrogen storage tank, 7 first electromagnetic valve, 8 first delivery pipe, 9 bracket, 10 venturi tube, 11 hose, 12 spray head, 13 mounting plate, 14 liquid adding pipe, 15 pipe cap, 16 orifice plate, 17 piston, 18 sealing ring, 19 limiting block, 20 sleeve, 21 second delivery pipe, 22 second electromagnetic valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Referring to Figure 1 , Figure 2 , a perfluoroketone automatic fire extinguishing device includes a box body 1. Inside the box body 1, a perfluoroketone liquid storage tank 3 and a storage cylinder 5 are fixedly arranged. A sleeve 20 is fixedly penetrated through the top of the perfluoroketone liquid storage tank 3. A piston 17 is slidably sleeved inside the sleeve 20. A compressed nitrogen storage tank 6 is sleeved inside the storage cylinder 5. Inside the box body 1, a Venturi tube 10 is fixedly arranged through a bracket 9. The inlet of the Venturi tube 10 is communicated with the outlet of the compressed nitrogen storage tank 6 through a first delivery pipe 8. A first electromagnetic valve 7 is installed on the pipe section of the first delivery pipe 8. The injection port of the Venturi tube 10 is communicated with the perfluoroketone liquid storage tank 3 through a second delivery pipe 21. A second electromagnetic valve 22 is installed on the pipe section of the second delivery pipe 21. The outlet of the Venturi tube 10 is communicated with a spray head 12 through a hose 11. When an external sensor detects a fire disaster, the first electromagnetic valve 7 and the second electromagnetic valve 22 are opened. The compressed nitrogen in the compressed nitrogen storage tank 6 is sent into the Venturi tube 10 through the first delivery pipe 8. At this time, negative pressure is generated through the Venturi tube 10, and the perfluoroketone liquid in the perfluoroketone liquid storage tank 3 is pumped into the Venturi tube 10 through the second delivery pipe 21 and is mixed with nitrogen, and then is transported to the spray head 12 through the hose 11 and sprayed out, thereby realizing automatic fire extinguishing. During the process of pumping out the perfluoroketone liquid, the piston 17 continuously moves downward to balance the pressure inside the perfluoroketone liquid storage tank 3 and prevent the perfluoroketone liquid storage tank 3 from deforming.

[0022] Referring to Figure 1 , convex platforms 2 are fixedly arranged at the four corners of the bottom of the box body 1. Bolt holes are opened on the convex platforms 2. The convex platforms 2 on the box body 1 are fixed at the designated position through bolts. An operation hole is opened on the top of the box body 1. A cover plate 4 is hinged inside the operation hole. An installation plate 13 is fixed on the spray head 12. The spray head 12 is fixed at the designated position through the installation plate 13 to achieve directional fire extinguishing.

[0023] Referring to Figure 2 , a hole plate 16 is fixedly sleeved at the inner top of the sleeve 20. A plurality of limiting blocks 19 are fixed at the inner bottom of the sleeve 20. The arranged hole plate 16 and limiting blocks 19 ensure that the piston 17 only moves between the hole plate 16 and the limiting blocks 19. The piston 17 and the sleeve 20 are sealed through a sealing ring 18. A liquid adding pipe 14 is communicated with the top of the perfluoroketone liquid storage tank 3. A pipe cap 15 is installed on the liquid adding pipe 14. The perfluoroketone liquid can be added into the perfluoroketone liquid storage tank 3 through the liquid adding pipe 14.

[0024] Working principle: When in use, the boss 2 on the box body 1 is fixed at a specified position by bolts, and the spray head 12 is fixed at a specified position through the mounting plate 13 to achieve directional fire extinguishing; when an external sensor detects a fire disaster, the first solenoid valve 7 and the second solenoid valve 22 are opened, and the compressed nitrogen in the compressed nitrogen storage tank 6 is sent into the Venturi tube 10 through the first delivery pipe 8. At this time, a negative pressure is generated through the Venturi tube 10, and the perfluorinated hexanone liquid in the perfluorinated hexanone storage tank 3 is pumped into the Venturi tube 10 through the second delivery pipe 21 and is sent to the spray head 12 through the hose 11 together with the nitrogen to be sprayed out, thereby realizing automatic fire extinguishing. During the process of pumping out the perfluorinated hexanone liquid, the piston 17 moves downward continuously to balance the pressure inside the perfluorinated hexanone storage tank 3 and prevent the perfluorinated hexanone storage tank 3 from deforming. The orifice plate 16 and the limit block 19 provided ensure that the piston 17 only moves between the orifice plate 16 and the limit block 19.

[0025] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A perfluorohexanone automatic fire extinguishing device, comprising a housing (1), characterized in that: A perfluorohexanone liquid storage tank (3) and a storage cylinder (5) are fixed inside the box (1); a sleeve (20) is fixed through the top of the perfluorohexanone liquid storage tank (3); a piston (17) is slidably sleeved inside the sleeve (20); a compressed nitrogen storage tank (6) is sleeved inside the storage cylinder (5); a venturi tube (10) is fixed inside the box (1) via a bracket (9); an inlet of the venturi tube (10) is connected to an outlet of the compressed nitrogen storage tank (6) via a first delivery pipe (8); a first solenoid valve (7) is installed on a pipe section of the first delivery pipe (8); an injection port of the venturi tube (10) is connected to the perfluorohexanone liquid storage tank (3) via a second delivery pipe (21); a second solenoid valve (22) is installed on a pipe section of the second delivery pipe (21); and an outlet of the venturi tube (10) is connected to a nozzle (12) via a hose (11).

2. A perfluorohexanone automatic fire extinguishing device according to claim 1, characterized in that: Bosses (2) are fixed to the four corners of the bottom of the box body (1), and bolt holes are provided on the bosses (2).

3. A perfluorohexanone automatic fire extinguishing device according to claim 1, characterized in that: An operating hole is provided on the top of the box body (1), and a cover plate (4) is hinged in the operating hole.

4. A perfluorohexanone automatic fire extinguishing device according to claim 1, characterized in that: A perforated plate (16) is fixedly sleeved on the inner top of the sleeve (20), and a plurality of limit blocks (19) are fixedly sleeved on the inner bottom of the sleeve (20).

5. A perfluorohexanone automatic fire extinguishing device according to claim 1, characterized in that: The piston (17) and the sleeve (20) are sealed via a sealing ring (18).

6. A perfluorohexanone automatic fire extinguishing device according to claim 1, characterized in that: The top of the perfluorohexanone liquid storage tank (3) is connected to a liquid adding pipe (14), and a pipe cap (15) is installed on the liquid adding pipe (14).

7. A perfluorohexanone automatic fire extinguishing device according to claim 1, characterized in that: A mounting plate (13) is fixed on the spray head (12).

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