Large-flow atomizing nozzle of explosion suppression device

Abstract

The utility model relates to a large flow atomizing nozzle of explosion suppression device, including nozzle main part, support mesh enclosure, atomizing screen, the inner end face of nozzle main part is the conical surface, the side wall of nozzle main part is equipped with a plurality of jet orifices along the tangential direction, support mesh enclosure clings to the inner wall of nozzle main part and is equipped with the atomizing screen. The atomization screen is tightly attached to the inner wall of the supporting net cover. The nozzle main body structure with the conical inner end face and the tangential jet orifice is adopted, so that the energy loss of a flowing-in liquid explosion suppression medium is reduced, the flow speed and the direction are changed, the liquid explosion suppression medium can be more smoothly jetted out at a high speed through the tangential jet orifice, the supporting mesh enclosure is of a porous structure, the structural mass is small, the distance between holes is large, and the service life of the nozzle is prolonged. The hole diameter is large, so that machining is convenient, large force can be borne, it is guaranteed that atomized liquid explosion suppression media pass through smoothly, and meanwhile the atomization screen can be prevented from generating excessive deformation under impact.

Description

Technical Field

[0001] This utility model relates to the technical field of fire protection, specifically to a high-flow-rate atomizing nozzle for an explosion suppression device. Background Technology

[0002] The key to achieving the explosion suppression effect of liquid explosion suppressing media lies in the suppression efficiency of the media itself and its atomization effect. The shorter the atomization time, the more complete the atomization, the smaller the diameter of the atomized particles, the larger the specific surface area, and the more complete the contact between the liquid explosion suppressing media and the explosive gas, resulting in a better suppression effect. Therefore, the design of the atomizing nozzle is particularly crucial for the design of liquid-based explosion suppressing bottles, and can even directly determine whether explosion suppression is successful. Research shows that currently available nozzles for liquid explosion suppressing media exhibit significant flow energy loss and poor atomization effects. Utility Model Content

[0003] To address the aforementioned issues, this invention proposes a high-flow-rate atomizing nozzle for an explosion suppression device. This nozzle employs a structure combining a conical inner end face with a tangential spray nozzle on the side wall, which fully atomizes the incoming liquid explosion suppression medium, reducing energy loss and increasing the ejection velocity.

[0004] The purpose of this utility model is achieved through the following technical solution: a high-flow-rate atomizing nozzle for an explosion suppression device, comprising a nozzle body, a support mesh cover, and an atomizing screen. The inner end face of the nozzle body is a conical surface, and the side wall of the nozzle body is provided with multiple spray ports along the tangential direction. The support mesh cover is arranged close to the inner wall of the nozzle body, and the atomizing screen is arranged close to the inner wall of the support mesh cover.

[0005] The nozzle body structure adopts a conical inner end face and tangential injection port to reduce the energy loss of the flowing liquid explosion suppression medium and change the flow velocity and direction, so that the liquid explosion suppression medium can be ejected more smoothly and at high speed through the tangential injection port.

[0006] In a preferred embodiment, the plurality of injection ports are rectangular, circular, or parallelogram-shaped, and the total area of ​​the plurality of injection ports is 0.5 to 1.5 times the area of ​​the main orifice of the nozzle body.

[0007] In a preferred embodiment, the apex angle of the cone is 30° to 90°, and the height of the cone is less than half the height of the nozzle body.

[0008] In a preferred embodiment, the mesh of the support cover is circular, hexagonal, or a combination of both shapes, and the diameter of the circular mesh is 3 to 10 millimeters.

[0009] The support mesh cover adopts a porous structure, which has a small structural mass, a large distance between holes, and a large hole diameter, making it easy to process and able to withstand greater forces. This ensures the smooth passage of atomized liquid explosion-suppressing media while preventing excessive deformation of the atomizing screen under impact.

[0010] In a preferred embodiment, the mesh of the atomizing screen is square in shape, and the side length of the mesh is 0.5 to 2 mm.

[0011] The screen has a porous structure and is woven from steel wire. It has a small structural mass. Due to the small distance between the holes and the small hole diameter, it can disperse the liquid explosion suppression medium and make it fully atomized.

[0012] This utility model has the following advantages compared with the prior art:

[0013] 1. This utility model adopts a nozzle body structure with a conical inner end face and a tangential injection port to reduce the energy loss of the flowing liquid explosion suppressing medium and change the flow velocity and direction. The liquid explosion suppressing medium is sprayed out through the tangential injection port, which is conducive to the spraying of the explosion suppressant after dispersion and atomization.

[0014] 2. The support mesh cover in this utility model adopts a porous structure, which has a small structural mass, a large distance between holes, and a large hole diameter, making it easy to process and able to withstand greater forces. This ensures the smooth passage of the dispersed atomized liquid explosion suppression medium, while also preventing the atomizing screen from undergoing excessive deformation under impact. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the nozzle body in this utility model;

[0017] Figure 3 This is a schematic diagram of the supporting mesh cover in this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the atomizing screen in this utility model;

[0019] Reference numerals: 1-Nozzle body; 2-Supporting mesh cover; 3-Atomizing screen; 4-Conical surface; 5-Injection port; 6-Main hole; 7-Circular mesh hole; 8-Screen hole. Detailed Implementation

[0020] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to exemplarily illustrate the principles of this utility model, but should not be used to limit the scope of this utility model. That is, this utility model is not limited to the described preferred embodiments, and the scope of this utility model is defined by the claims.

[0021] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance; those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Example 1

[0023] See Figures 1 to 4 This embodiment of a high-flow-rate atomizing nozzle for an explosion suppression device includes a nozzle body 1, a support mesh cover 2, and an atomizing screen 3. The inner end face of the nozzle body 1 is a conical surface 4. The side wall of the nozzle body 1 is provided with multiple spray ports 5 along the tangential direction. The outer wall of the support mesh cover 2 is set close to the inner wall of the nozzle body 1. The mesh holes of the support mesh cover 2 are circular holes with a diameter of 3 mm. During installation, the angle of the support mesh cover 2 is adjusted so that the mesh holes of the support mesh cover 2 are aligned with the spray ports 5 of the nozzle body 1 as much as possible. The outer wall of the atomizing screen 3 is set close to the inner wall of the support mesh cover 2. The shape of the screen holes 8 of the atomizing screen 3 is square, and the side length of the screen holes 8 is 0.5 mm.

[0024] In this embodiment, there are eight spray nozzles 5, which are evenly spaced along the circumference of the nozzle body 1. The shape of the spray nozzles 5 can be rectangular, circular or parallelogram. The total area of ​​the multiple spray nozzles 5 is 0.5 to 1.5 times the area of ​​the main hole 6 of the nozzle body.

[0025] In this embodiment, the apex angle of the cone 4 is 30° to 90°, and the height of the cone 4 is less than half the height of the nozzle body 1.

[0026] Example 2

[0027] This embodiment is an improvement on Embodiment 1. For the same content as Embodiment 1, please refer to the content disclosed in Embodiment 1 for understanding.

[0028] This embodiment of a high-flow-rate atomizing nozzle for an explosion suppression device includes a nozzle body 1, a support mesh cover 2, and an atomizing screen 3. The support mesh cover 2 is first installed inside the nozzle body 1, with its outer wall tightly against the inner wall of the nozzle body 1. The mesh openings of the support mesh cover 2 are circular, with a diameter of 7 mm. During installation, the angle of the support mesh cover 2 is adjusted so that as many of the mesh openings as possible are aligned with the spray nozzle 5 of the nozzle body 1. Then, the atomizing screen 3 is installed, with its outer wall tightly against the inner wall of the support mesh cover 2. The mesh openings 8 of the atomizing screen 3 are square, with a side length of 1.5 mm.

[0029] Example 3

[0030] This embodiment is an improvement on Embodiments 1 and 2. For the same content as Embodiments 1 and 2, please refer to the content disclosed in Embodiments 1 and 2 for understanding.

[0031] This embodiment of a high-flow-rate atomizing nozzle for an explosion suppression device includes a nozzle body 1, a support mesh cover 2, and an atomizing screen 3. The support mesh cover 2 is first installed inside the nozzle body 1, with its outer wall tightly attached to the inner wall of the nozzle body 1. The mesh openings 7 of the support mesh cover 2 are circular, with a diameter of 10 mm. During installation, the angle of the support mesh cover 2 is adjusted so that as many of the mesh openings as possible are aligned with the spray nozzle 5 of the nozzle body 1. Then, the atomizing screen 3 is installed, with its outer wall tightly attached to the inner wall of the support mesh cover 2. The mesh openings 8 of the atomizing screen 3 are square, with a side length of 2 mm.

[0032] The above embodiments have relatively simple and basically consistent structural settings and working processes. When using the fire extinguishing and explosion suppressant spraying device, the support mesh cover 2 and the atomizing screen 3 are sequentially installed into the nozzle body 1. The nozzle body 1 is installed on the valve body of the explosion suppressant device through a flange. When the valve is opened, the liquid explosion suppressant medium is released and first impacts the conical structure at the top of the nozzle body 1 for the first atomization. Then it is reflected onto the atomizing screen. The liquid explosion suppressant medium impacts the atomizing screen 3 and passes through the screen holes 8 on the surface, causing the liquid explosion suppressant medium to disperse and atomize again. Subsequently, under the action of the tangentially set spray nozzle 5 of the nozzle body 1, the liquid explosion suppressant medium is sprayed out at high speed. Throughout the process, the support mesh cover 2 supports the atomizing screen 3 to prevent it from undergoing large deformation. The components are easy to install and disassemble and replace. The overall structure is made of stainless steel, which has the characteristics of corrosion resistance and high pressure resistance. It can work stably and continuously in high-pressure and high-corrosion working environments. Different sizes of support mesh covers and atomizing screens can be selected according to the degree of atomization. As the aperture of the atomizing screen is smaller, the aperture and center distance of the support mesh cover are reduced accordingly.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A high-flow-rate atomizing nozzle for an explosion suppression device, characterized in that: The nozzle body (1), the support mesh cover (2), and the atomizing screen (3) are included. The inner end face of the nozzle body (1) is a conical surface (4). The side wall of the nozzle body (1) is provided with multiple spray ports (5) along the tangential direction. The support mesh cover (2) is set close to the inner wall of the nozzle body (1). The atomizing screen (3) is set close to the inner wall of the support mesh cover (2).

2. The high-flow-rate atomizing nozzle of the explosion suppression device according to claim 1, characterized in that: The multiple injection ports (5) are rectangular, circular or parallelogram in shape, and the total area of ​​the multiple injection ports (5) is 0.5 to 1.5 times the area of ​​the main hole (6) of the nozzle body.

3. The high-flow-rate atomizing nozzle of the explosion suppression device according to claim 1, characterized in that: The apex angle of the cone (4) is 30° to 90°, and the height of the cone (4) is less than half the height of the nozzle body (1).

4. The high-flow-rate atomizing nozzle of the explosion suppression device according to claim 1, characterized in that: The mesh of the support mesh cover (2) is circular, hexagonal, or a combination of the two shapes, and the diameter of the circular mesh is 3 to 10 mm.

5. The high-flow-rate atomizing nozzle of the explosion suppression device according to claim 1, characterized in that: The atomizing screen (3) has square mesh openings with a side length of 0.5 to 2 mm.

Images