Two-phase fire extinguishing nozzle

Abstract

The utility model relates to the technical field of sprayers, in particular to a two-phase fire extinguishing sprayer which comprises a base, a sprayer body and a connector, a first flow channel and a second flow channel which are isolated from each other are arranged in the base, an inlet of the first flow channel is defined as a first liquid inlet, and an outlet of the first flow channel is defined as a first liquid outlet. An inlet of the second flow channel is defined as a second liquid inlet, and an outlet of the second flow channel is defined as a second liquid outlet; the first liquid inlet is communicated with a fire extinguishing agent, the second liquid inlet is communicated with fire fighting water, the spray head is connected to the first liquid outlet, and the connector is connected to the first liquid inlet and the second liquid inlet. According to the double-phase fire extinguishing nozzle disclosed by the utility model, different fire extinguishing agents can be respectively guided out from the first flow channel and the second flow channel.

Description

Technical Field

[0001] The utility model relates to a sprinkler head, in particular to a two-phase fire extinguishing sprinkler head. Background Art

[0002] In recent years, new energy vehicles have developed rapidly. Accidental fire in the battery compartment of new energy vehicles is one of the safety hazards of new energy vehicles. In order to reduce or eliminate safety hazards, general battery compartments are equipped with fire extinguishing systems, as shown in the announcement number CN112435428B, entitled Fire Alarm System, Method and Chinese Invention Patent for New Energy Vehicles. The smoke detection system and the sprinkler execution system are two important modules in the fire extinguishing system. After the smoke detection system detects a fire in the battery compartment, it sends a signal to the controller, and the controller starts the sprinkler system to spray fire-fighting fluid.

[0003] In the prior art, the fire extinguishing agent reserve in the battery compartment is insufficient, which is not enough to extinguish the fire point when the fire is large. Therefore, some new energy vehicles will add additional liquid storage equipment and add fire water to the liquid storage equipment to compensate for the safety hazards caused by insufficient fire extinguishing agent.

[0004] Based on this, the existing single liquid phase fire extinguishing sprinkler is needed. Utility Model Content

[0005] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a two-phase fire extinguishing nozzle for improving the fire extinguishing effect.

[0006] Technical solution: To achieve the above purpose, the utility model discloses a two-phase fire extinguishing nozzle, comprising:

[0007] A base, wherein a first flow channel and a second flow channel isolated from each other are arranged in the base, wherein the inlet of the first flow channel is defined as a first liquid inlet, the outlet of the first flow channel is defined as a first liquid outlet, the inlet of the second flow channel is defined as a second liquid inlet, and the outlet of the second flow channel is defined as a second liquid outlet; the first liquid inlet is connected to a fire extinguishing agent, and the second liquid inlet is connected to fire water;

[0008] a spray head connected to the first liquid outlet;

[0009] A connector is connected to the first liquid inlet and the second liquid inlet respectively.

[0010] Preferably, the base is provided with grooves on the end faces of the first and second liquid outlets, a first sealing ring is installed in the groove, and one side of the base is connected to a clamping flange, which fixes the first sealing ring to the groove.

[0011] Preferably, the plug is further included, the plug is connected to the free end of the joint, and the plug is used to close the first flow channel and the second flow channel.

[0012] Preferably, the second liquid outlet is connected to a spray head.

[0013] Preferably, a one-way valve is provided in the first flow channel for allowing liquid to flow from the first liquid inlet to the first liquid outlet.

[0014] Preferably, a diaphragm is provided on the side wall between the first flow channel and the second flow channel, and after the diaphragm is ruptured, the liquid can flow from the first flow channel into the second flow channel.

[0015] Preferably, the diaphragm is made of nitrile rubber, a flange plate is provided on the edge of the diaphragm, and the diaphragm is fixedly connected to the base through the flange plate.

[0016] The utility model has the following technical effects:

[0017] (1) A first flow channel and a second flow channel are designed in the base. The first flow channel is used to spray the built-in fire extinguishing agent, and the second flow channel is used to discharge the additional fire water. When a fire is detected in the battery compartment, the first flow channel first sprays the fire extinguishing agent to extinguish the fire. If the fire point cannot be extinguished after the fire extinguishing agent is used up, the second flow channel discharges the fire water to continue extinguishing the fire.

[0018] (2) A diaphragm is added between the first flow channel and the second flow channel. When the nozzle of the first flow channel is blocked, the pressure in the first flow channel increases, breaks the diaphragm and is discharged from the second flow channel, thereby reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a partial cross-sectional view of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure below the compression flange in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the diaphragm in the utility model.

[0023] In the figure, 1. base; 2. first flow channel; 3. second flow channel; 4. first liquid inlet; 5. first liquid outlet; 6. second liquid inlet; 7. second liquid outlet; 8. nozzle; 9. joint; 10. groove; 11. first sealing ring; 12. clamping flange; 13. plug; 14. one-way valve; 15. diaphragm; 16. flange plate. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 To Attachment Figure 4 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0025] A two-phase fire extinguishing nozzle comprises a base 1, a nozzle 8, a joint 9 and a plug 13. A first flow channel 2 and a second flow channel 3 isolated from each other are arranged in the base 1. The inlet of the first flow channel 2 is defined as a first liquid inlet 4, and the outlet of the first flow channel 2 is defined as a first liquid outlet 5; the inlet of the second flow channel 3 is defined as a second liquid inlet 6, and the outlet of the second flow channel 3 is defined as a second liquid outlet 7. The first liquid inlet 4 is used to communicate with the fire extinguishing agent provided in the battery compartment, and the second liquid inlet 6 is used to communicate with the fire extinguishing agent, which can be liquid nitrogen or other existing fire extinguishing agents. The first liquid outlet 5 is connected to the nozzle 8, and the second liquid outlet 6 can be connected to the nozzle 8 or not, depending on the specific type of fire water. The first liquid inlet 4 and the second liquid inlet 6 are respectively connected to the joint 9, and the plug 13 is connected to the free end of the joint 9, and the plug 13 is used to close the first flow channel 2 and the second flow channel 3. The design of the plug 13 is a factory requirement to prevent foreign matter from entering the first flow channel 2 and the second flow channel 3 and clogging the nozzle 8. When using and installing, the plug 13 can be removed and discarded. The base 1 is provided with a first liquid outlet 5 and a second liquid outlet 7. A groove 10 is provided on the end surface. A first sealing ring 11 is installed in the groove 10. One side of the base 1 is connected to a clamping flange 12. The clamping flange 12 fixes the first sealing ring 11 to the groove 10.

[0026] When the monitoring system of the battery compartment detects a fire point, the valve is opened to control the fire extinguishing agent to flow out through the first flow channel 2; when the fire point is still not extinguished after the fire extinguishing agent is used up, the valve is opened to control the fire water to flow out through the second flow channel 3.

[0027] A one-way valve 14 is provided in the first flow channel 2 for allowing liquid to flow from the first liquid inlet 4 to the first liquid outlet 5. A diaphragm 15 is provided on the side wall between the first flow channel 2 and the second flow channel 3. After the diaphragm 15 is broken, the liquid can flow from the first flow channel 2 to the second flow channel 3. The diaphragm 15 here has two functions. Since the diaphragm 15 is made of rubber material and can expand and contract to a certain extent, when the diaphragm 15 is not broken, the space in the first flow channel 2 can be changed by expansion and contraction, so that the liquid pressure in the first flow channel 2 is maintained in a relatively stable range, which plays a protective role on the nozzle 8 out of the first liquid outlet 5; when the nozzle 8 out of the first liquid outlet 5 is blocked, the fire extinguishing agent can break the diaphragm 15 and be discharged from the second flow channel 3, reducing safety hazards.

[0028] The edge of the diaphragm 15 is provided with a flange plate 16, and the diaphragm 15 is fixed on the base 1 through the flange plate 16. When the diaphragm 15 is broken, the joint 9 on one side can be removed for replacement.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A two-phase fire extinguishing nozzle, characterized in that: include: A base (1), wherein a first flow channel (2) and a second flow channel (3) isolated from each other are arranged in the base (1), the inlet of the first flow channel (2) is defined as a first liquid inlet (4), the outlet of the first flow channel (2) is defined as a first liquid outlet (5), the inlet of the second flow channel (3) is defined as a second liquid inlet (6), and the outlet of the second flow channel (3) is defined as a second liquid outlet (7); the first liquid inlet (4) is connected to a fire extinguishing agent, and the second liquid inlet (6) is connected to fire water; A nozzle (8), the nozzle (8) being connected to the first liquid outlet (5); A connector (9), wherein the connector (9) is connected to the first liquid inlet (4) and the second liquid inlet (6) respectively.

2. The two-phase fire extinguishing nozzle according to claim 1, characterized in that: The base (1) is provided with a first liquid outlet (5) and a second liquid outlet (7) on the end surface thereof, and a groove (10) is provided thereon, a first sealing ring (11) is installed in the groove (10), and a clamping flange (12) is connected to one side surface of the base (1), and the clamping flange (12) fixes the first sealing ring (11) in the groove (10).

3. The dual-phase fire extinguishing nozzle according to claim 1, characterized in that: It also comprises a plug (13), the plug (13) being connected to the free end of the joint (9), and the plug (13) being used to close the first flow channel (2) and the second flow channel (3).

4. The dual-phase fire extinguishing nozzle according to claim 1, characterized in that: The second liquid outlet (7) is connected to a nozzle (8).

5. The dual-phase fire extinguishing nozzle according to claim 1, characterized in that: A one-way valve (14) is provided in the first flow channel (2) for allowing liquid to flow from the first liquid inlet (4) to the first liquid outlet (5).

6. The dual-phase fire extinguishing nozzle according to claim 5, characterized in that: A diaphragm (15) is provided on the side wall between the first flow channel (2) and the second flow channel (3); after the diaphragm (15) is broken, liquid can flow from the first flow channel (2) into the second flow channel (3).

7. The dual-phase fire extinguishing nozzle according to claim 6, characterized in that: The diaphragm (15) is made of nitrile rubber, a flange plate (16) is arranged on the edge of the diaphragm (15), and the diaphragm (15) is fixedly connected to the base (1) via the flange plate (16).

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