Fire extinguishing nozzle and fire extinguishing system

Abstract

The invention relates to the technical field of fire fighting equipment, and provides a fire extinguishing nozzle and a fire extinguishing system.The fire extinguishing nozzle comprises a body, a hemispherical screen and a flow dividing assembly; a flow channel for a fire extinguishing agent to flow is arranged in the body, the body comprises a liquid inlet section and an atomizing section, one end of the liquid inlet section is communicated with the atomizing section, and the other end of the liquid inlet section is hermetically connected with the spray pipe; the liquid inlet section is a straight pipe section, the atomizing section is a cone section, and the atomizing section is used for atomizing a fire extinguishing agent; the hemispherical screen is installed on the liquid inlet section, the inner concave arc face of the hemispherical screen is arranged away from the spray pipe, and the hemispherical screen is used for conducting pre-atomization and pre-diversion treatment on the fire extinguishing agent entering the liquid inlet section; the flow dividing assembly is installed on the liquid inlet section, located on the rear side of the hemispherical screen in the flowing direction of the fire extinguishing agent and used for dividing the pre-divided fire extinguishing agent. According to the fire extinguishing nozzle, compatibility of a long range and fine fog drops is considered, and the spraying reliability of the fire extinguishing nozzle is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and in particular to a fire-extinguishing nozzle and a fire-extinguishing system. Background Art

[0002] Fire extinguishing nozzles are used to spray fire extinguishing agents in fire fighting systems, which directly determines the spray form, coverage, flow rate and fire extinguishing efficiency of the fire extinguishing agent.

[0003] Currently, fire extinguishing nozzles use a single flow channel to achieve atomization. While increasing the spray pressure can increase the range to a certain extent, the droplet size also increases significantly, resulting in insufficient penetration and coverage of the extinguishing agent, making it difficult to effectively cover gaps or solid deep-seated fire sources. Alternatively, fire extinguishing nozzles have been improved to achieve multi-stage atomization to improve the uniformity and distribution of the spray flow. However, this type of design suffers from a certain amount of kinetic energy loss at the outlet, resulting in an insufficient effective spray distance, making it difficult to meet the firefighting needs of internal deep fire points. Summary of the Invention

[0004] The present invention provides a fire extinguishing nozzle and a fire extinguishing system, which are used to solve the problem that the fire extinguishing nozzle in the prior art cannot take into account the compatibility of long range and fine mist droplets, resulting in insufficient spraying capacity and reliability.

[0005] In order to solve the above technical problems, this application is implemented as follows: In a first aspect, the present invention provides a fire extinguishing nozzle, comprising: A body, wherein a flow channel for the flow of the fire extinguishing agent is provided in the body, the body comprising a liquid inlet section and an atomizing section, one end of the liquid inlet section being connected to the atomizing section, and the other end of the liquid inlet section being sealedly connected to the nozzle; the liquid inlet section being a straight pipe section, and the atomizing section being a cone section, the atomizing section being used to atomize the fire extinguishing agent; a hemispherical screen installed in the liquid inlet section, with the inner concave arc surface of the hemispherical screen facing away from the nozzle, and the hemispherical screen being used for pre-atomizing and pre-diverting the fire extinguishing agent entering the liquid inlet section; A diversion component is installed in the liquid inlet section. Along the flow direction of the fire extinguishing agent, the diversion component is located on the rear side of the hemispherical screen. The diversion component is used to divert the fire extinguishing agent that has been pre-diverted.

[0006] According to a fire extinguishing nozzle provided by the present invention, the diverter assembly includes: connecting plate; There are two diverter plates, and the two diverter plates are respectively arranged on both sides of the connecting plate; the diverter plates are provided with diverter holes, and the fire extinguishing agent flows through the diverter holes.

[0007] According to a fire extinguishing nozzle provided by the present invention, the two diverter plates are arranged at an angle, and the diverter hole is provided on one end of the diverter plate close to the connecting plate.

[0008] According to a fire extinguishing nozzle provided by the present invention, the atomizing section includes: a first cone section and a second cone section; One end of the first cone section is connected to the liquid inlet section, and the other end is connected to the second cone section; The first cone segment is shorter than the second cone segment.

[0009] According to a fire extinguishing nozzle provided by the present invention, the range of the fire extinguishing agent through the outlet of the second cone section is ≥10m, and the atomized particle size Dv90 at the outlet end of the second cone section is ≤50μm.

[0010] According to a fire extinguishing nozzle provided by the present invention, the body further comprises a contraction section; The contraction section is arranged between the liquid inlet section and the atomization section. The contraction section is arranged as a straight pipe section. The inner wall size of the contraction section is smaller than the inner wall size of the liquid inlet section.

[0011] According to the fire extinguishing nozzle provided by the present invention, the outer wall of the body is arranged in the shape of a regular hexagonal prism.

[0012] A fire extinguishing nozzle according to the present invention further includes: an adapter; The adapter is provided at one end of the liquid inlet section facing the nozzle, the adapter is hollow, the inner wall of the adapter is provided with an internal thread, the outer wall of the liquid inlet section is provided with an external thread, and the adapter is threadedly connected to the liquid inlet section; The hemispherical screen is arranged on the inner wall of the adapter.

[0013] A fire extinguishing nozzle provided according to the present invention further includes: a sealing ring; The sealing ring is sandwiched between the liquid inlet section and the adapter seat.

[0014] In a second aspect, the present invention provides a fire extinguishing system comprising: a fire extinguishing agent source, a nozzle, and the fire extinguishing nozzle as described above; The fire extinguishing agent source is connected to the fire extinguishing nozzle through the nozzle.

[0015] The fire extinguishing nozzle and fire extinguishing system provided by the present invention provide a liquid inlet section and an atomizing section on the main body, and provide a hemispherical screen and a diversion assembly between the liquid inlet section and the nozzle. The hemispherical screen is used to pre-atomize and pre-divide the fire extinguishing agent, thereby enhancing the disturbance of the fire extinguishing agent. The diversion assembly is used to divert the fire extinguishing agent, and then the fire extinguishing agent is atomized and sprayed through the atomizing section. Through the synergistic effect of two-stage atomization and two-part diversion, the fire extinguishing agent is efficiently atomized and the droplet size is kept small, while the injection pressure of the fire extinguishing agent is enhanced, the injection speed of the fire extinguishing agent is increased, and stable injection over a long distance is achieved. The compatibility of long range and fine droplets is taken into account, thereby improving the injection reliability of the fire extinguishing nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is an exploded view of the fire extinguishing nozzle provided by the present invention.

[0018] Figure 2 It is a front view of the fire extinguishing nozzle provided by the present invention.

[0019] Figure 3 The present invention provides Figure 2 AA cross-sectional view.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the hemispherical screen provided by the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the diversion component provided by the present invention.

[0022] Figure 6 It is a top view of the diversion component provided by the present invention.

[0023] Figure 7 It is a left view of the diversion assembly provided by the present invention.

[0024] Reference numerals: 1. Main body; 11. Liquid inlet section; 12. Atomization section; 13. Contraction section; 121. First cone section; 122. Second cone section; 2. Hemispherical screen; 21. Mounting plate; 22. Concave arc surface; 3. Diverter assembly; 31. Connecting plate; 32. Diverter plate; 321. Diverter hole; 4. Adapter; 5. Sealing ring. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of explaining the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0027] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0028] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0030] The following combination Figures 1 to 7 , the fire extinguishing nozzle and fire extinguishing system provided by the embodiment of the present invention are described in detail through specific embodiments and their application scenarios.

[0031] First, as Figure 1 、 Figure 2 and Figure 3 As shown, this embodiment provides a fire extinguishing nozzle, including: a body 1, a hemispherical screen 2 and a diversion component 3.

[0032] A flow channel for the flow of fire extinguishing agent is provided in the body 1. The body 1 includes a liquid inlet section 11 and an atomizing section 12. One end of the liquid inlet section 11 is connected to the atomizing section 12, and the other end of the liquid inlet section 11 is sealed with the nozzle; the liquid inlet section 11 is a straight pipe section, and the atomizing section 12 is a cone section. The atomizing section 12 is used to atomize the fire extinguishing agent.

[0033] like Figure 4 As shown, the hemispherical screen 2 is installed in the liquid inlet section 11, and the concave arc surface 22 of the hemispherical screen 2 is set away from the nozzle. The hemispherical screen 2 is used to pre-atomize and pre-diverge the fire extinguishing agent entering the liquid inlet section 11.

[0034] The diverter assembly 3 is installed at the liquid inlet section 11 . Along the flow direction of the fire extinguishing agent, the diverter assembly 3 is located at the rear side of the hemispherical screen 2 . The diverter assembly 3 is used to divert the pre-diverted fire extinguishing agent.

[0035] It is understood that the flow channel within the fire extinguishing nozzle is used to flow the fire extinguishing agent, which is atomized into fine droplets within the nozzle and sprayed toward the fire source. The fire extinguishing nozzle of this embodiment is suitable for complex fire scenarios that require long-range spraying, precise atomization, and adaptability to operating conditions, including but not limited to industrial oil fires, electrical equipment fires, energy storage system fires, and deep-seated solid fires. The fire extinguishing agent can be perfluorohexanone or heptafluoropropane.

[0036] In this embodiment, the liquid inlet section 11 communicates with the nozzle and is used to introduce the fire extinguishing agent. To ensure stable extinguishing agent delivery, the liquid inlet section 11 is a straight pipe section, meaning that the inner walls of the corresponding flow channels in the liquid inlet section 11 have the same dimensions. The atomizing section 12 is located behind the liquid inlet section 11 along the flow direction of the fire extinguishing agent. The atomizing section 12 is a tapered section. By gradually decreasing its inner diameter, the tapered section converts the pressure potential energy and kinetic energy of the fire extinguishing agent into the surface energy of the liquid droplets, thereby atomizing the fire extinguishing agent.

[0037] At the same time, the hemispherical screen 2 of this embodiment is arranged between the nozzle and the diversion assembly 3. The hemispherical screen 2 includes a mounting plate 21 and a concave arc surface 22, the end of the concave arc surface 22 is connected to the mounting plate 21, and the mounting plate 21 is connected to the inner wall of the liquid inlet section 11. Specifically, the concave arc surface 22 is a dome-shaped structure, on which staggered screens are evenly distributed, and the arrangement of the screens is distributed in an arc shape along the hemispherical surface. Since the drainage surface of the hemispherical screen 2 is a curved surface, the fire extinguishing agent generates a vortex after hitting the curved surface, and impurities are thrown off the screen surface in the tangential direction by the centrifugal force, preventing the attachment of impurities to the hemispherical screen 2. In addition, the concave arc surface 22 can allow the fire extinguishing agent to pre-spin when passing through, thereby increasing the rotational momentum of the fire extinguishing agent. The centrifugal force further refines the droplets of the fire extinguishing agent, thereby achieving pre-atomization of the fire extinguishing agent. The curved surface where the inwardly concave arc surface 22 is located allows the fire extinguishing agent to pass through numerous sieve holes through the screen and enter the atomizing section 12, thereby enhancing the disturbance of the fire extinguishing agent and achieving turbulent flow treatment of the fire extinguishing agent.

[0038] Furthermore, the concave arc surface 22 is arranged toward the diversion component 3, and the fire extinguishing agent passing through the hemispherical screen 2 is naturally layered into multiple branches through the screen holes, so that the flow of the fire extinguishing agent is more uniform, thereby realizing the pre-diversion of the fire extinguishing agent.

[0039] Specifically, the mesh radius of the hemispherical screen 2 is 0.05 cm.

[0040] Furthermore, the diverter assembly 3 is used to divert the fire extinguishing agent pre-diverted by the hemispherical screen 2. Because the diverter assembly 3 can divide the fire extinguishing agent into several streams, the multiple, thinner jets flowing out of the hemispherical screen 2 are blocked by the diverter assembly 3 and flow out through the diverter channel of the diverter assembly 3. The diverter assembly 3's blocking of the fire extinguishing agent increases the pressure of the fire extinguishing agent, thereby increasing its flow rate. The multiple streams of fire extinguishing agent are divided into several streams. The increased flow rate of the fire extinguishing agent in the diverter channel greatly increases the range of the fire extinguishing agent, enabling precise coverage of the fire extinguishing agent over long distances.

[0041] Specifically, the diversion component 3 can achieve the diversion of the fire extinguishing agent by forming a diversion channel through a guide plate, or by providing a baffle plate and opening a hole in the baffle plate.

[0042] Optionally, the main body 1 can be made of high-performance engineering plastics, such as PA66-GF30 (30% glass fiber reinforced nylon), and the diverter assembly 3 can be made of titanium alloy. Because high-performance engineering plastics and titanium alloys can withstand extreme operating conditions of -40°C to 180°C and are also resistant to chemical corrosion, they significantly improve the mechanical strength, stability, and heat resistance of the fire extinguishing nozzle.

[0043] In this embodiment, through the cooperation of the hemispherical screen 2 and the diversion component 3, when adjusting the pressure of the fire extinguishing agent, the adjustment feedback of the fire extinguishing agent is more sensitive based on the pre-diversion and pre-atomization of the fire extinguishing nozzle, so that the flow adjustment range is larger, and the flow adjustment of 1 to 3 times can be achieved. It can adapt to the high-flow injection requirements of oil fires and the low-flow injection requirements of electrical fires at the same time.

[0044] Furthermore, the double-stage atomization design of this embodiment can effectively prolong the gasification time of the fire extinguishing agent, enhance the fire extinguishing concentration, and make the fire extinguishing agent more stable.

[0045] The fire extinguishing nozzle provided by the present invention provides a liquid inlet section 11 and an atomizing section 12 on the main body 1, and provides a hemispherical screen 2 and a diversion component 3 between the liquid inlet section 11 and the nozzle. The hemispherical screen 2 is used to pre-atomize and pre-divide the fire extinguishing agent to enhance the disturbance of the fire extinguishing agent, and the diversion component 3 is used to divert the fire extinguishing agent. Then, the fire extinguishing agent is atomized and sprayed through the atomizing section 12. Through the synergistic effect of two-stage atomization and two-part diversion, the fire extinguishing agent is efficiently atomized and the droplet size is kept small, while the injection pressure of the fire extinguishing agent is enhanced, the injection speed of the fire extinguishing agent is increased, and stable injection over a long distance is achieved. The compatibility of long range and fine droplets is taken into account, thereby improving the injection reliability of the fire extinguishing nozzle.

[0046] like Figure 5 、 Figure 6 and Figure 7 As shown, the diverter assembly 3 of this embodiment includes: a connecting plate 31 and a diverter plate 32 .

[0047] There are two diverter plates 32 , which are respectively arranged on both sides of the connecting plate 31 ; the diverter plates 32 are provided with diverter holes 321 , through which the fire extinguishing agent flows.

[0048] It will be appreciated that the diverter plates 32 are located on both sides of the connecting plate 31, blocking the jet of fire extinguishing agent from both sides of the connecting plate 31, thereby increasing the pressure and velocity of the jet of fire extinguishing agent. The diverter holes 321 provided on the diverter plates 32 allow the passage of fire extinguishing agent. Since two diverter plates 32 are provided in this embodiment, each diverter plate 32 may be provided with one diverter hole 321, or multiple diverter holes 321 may be provided.

[0049] The connecting plate 31 of this embodiment has two inclined surfaces on the side facing the hemispherical screen 2. These two inclined surfaces can guide the fire extinguishing agent, dividing the fire extinguishing agent into two layers, the upper layer of fire extinguishing agent being blocked by the diverter plate 32 arranged on the upper side of the connecting plate 31 and flowing toward the atomizing section 12 through the diverter holes 321 of the upper diverter plate 32. The lower layer of fire extinguishing agent flows toward the atomizing section 12 through the diverter holes 321 on the lower side of the connecting plate 31.

[0050] In this embodiment, a connecting plate 31 and a diverter plate 32 are provided in the diverter assembly 3, so that the fire extinguishing agent in the flow channel is separated into two layers, an upper layer and an lower layer, by the connecting plate 31, and is diverted and accelerated through the diverter hole 321, thereby extending the range of the fire extinguishing agent and enhancing the disturbance of the jet.

[0051] like Figure 5 、 Figure 6 and Figure 7 As shown, the two diverter plates 32 of this embodiment are arranged at an angle, and the diverter hole 321 is provided on one end of the diverter plate 32 close to the connecting plate 31 .

[0052] It is understandable that the two diverter plates 32 are arranged at an angle, so that the jets ejected from the diverter holes 321 are also arranged at an angle, so that the upper and lower jets of the connecting plate 31 are not initially ejected in parallel, but are ejected at a certain angle and can intersect in the flow channel. The upper and lower jets intersect and merge in the liquid inlet section 11 and collide, causing a strong turbulence effect, thereby improving the mixing efficiency of the fire extinguishing agent.

[0053] like Figure 3 As shown, the atomizing section 12 of this embodiment includes a first cone section 121 and a second cone section 122 .

[0054] One end of the first cone section 121 is connected to the liquid inlet section 11 , and the other end is connected to the second cone section 122 ; the length of the first cone section 121 is shorter than that of the second cone section 122 .

[0055] It is understood that the first conical section 121 is positioned near the liquid inlet section 11. Because the larger end of the first conical section 121 faces the liquid inlet section 11, the inner diameter of the first conical section 121 gradually decreases. While the flow rate of the fire extinguishing agent in the flow channel remains constant, the flow velocity in the first conical section 121 gradually increases. The fire extinguishing agent, which has been diverted and pre-atomized in the liquid inlet section 11, experiences pressure release in the first conical section 121, increasing the flow velocity and focusing the spray.

[0056] Second conical section 122 is located near the nozzle's outlet. Because its larger end faces first conical section 121, its inner diameter gradually decreases, increasing the flow rate. Fire extinguishing agent is compressed and ejected at high speed in second conical section 122, forming a high-kinetic-energy jet for long-range spraying.

[0057] like Figure 3 As shown, the range of the fire extinguishing agent of this embodiment through the outlet of the second cone section 122 is ≥10m, and the atomized particle size Dv90 at the outlet end of the second cone section 122 is ≤50μm.

[0058] It can be understood that since the hemispherical screen 2 and the diversion assembly 3 arranged in the main body 1 of this embodiment can achieve secondary diversion and secondary atomization, the atomization effect of the fire extinguishing agent is better, and the atomized particle size at the outlet end of the second cone section 122 can reach Dv90≤50μm. At the same time, the secondary diversion of the fire extinguishing agent increases the pressure of the fire extinguishing agent, increases the propagation speed of the fire extinguishing agent, and improves the range, so that the range of the outlet of the second cone section 122 is ≥10m.

[0059] like Figure 3 As shown, the body 1 of this embodiment further includes a contraction section 13 .

[0060] The contraction section 13 is provided between the liquid inlet section 11 and the atomization section 12 . The contraction section 13 is provided as a straight pipe section. The inner wall size of the contraction section 13 is smaller than the inner wall size of the liquid inlet section 11 .

[0061] It can be understood that the contraction section 13 is a straight pipe section. Since the inner wall size of the contraction section 13 is smaller than the inner wall size of the liquid inlet section 11, the flow rate of the fire extinguishing agent is accelerated by utilizing the Venturi effect through the reduction of the inner diameter, and the contraction section 13 forms a pressure release zone to ensure that the jet is fully stabilized and mixed before entering the gradually contracting atomization section 12, thereby providing a stable mixed jet for the atomization of the fire extinguishing agent.

[0062] like Figure 2 As shown, the outer wall of the body 1 of this embodiment is arranged in the shape of a regular hexagonal prism.

[0063] As can be appreciated, the hexagonal prism structure of this embodiment offers greater torsional strength than a cylindrical structure, making the flow channel less susceptible to deformation and leakage. At a fire extinguishing agent pressure of 3 MPa, the torsional strength of the main body 1 of this embodiment is increased by 40%, the flow channel accuracy deviation is less than or equal to 2%, and the leakage rate is less than 0.1 L / min. The hexagonal prism structure of this embodiment significantly improves the stability and durability of the fire extinguishing nozzle.

[0064] like Figure 3 As shown, the fire extinguishing nozzle of this embodiment further includes: an adapter seat 4.

[0065] The adapter seat 4 is arranged at one end of the liquid inlet section 11 facing the nozzle. The adapter seat 4 is hollow. The inner wall of the adapter seat 4 is provided with an internal thread, and the outer wall of the liquid inlet section 11 is provided with an external thread. The adapter seat 4 is threadedly connected to the liquid inlet section 11; the hemispherical screen 2 is arranged on the inner wall of the adapter seat 4.

[0066] It can be understood that the adapter seat 4 and the liquid inlet section 11 are connected by threads, which can realize a detachable connection between the adapter seat 4 and the liquid inlet section 11. The nozzle and the main body 1 can be conveniently assembled and disassembled through the adapter seat 4, thereby improving the operability of the connection between the fire extinguishing nozzle and the nozzle on site.

[0067] Optionally, the external thread of the liquid inlet section 11 and the internal thread of the adapter 4 of this embodiment may both be high-pressure sealing threads.

[0068] like Figure 3 As shown, the fire extinguishing nozzle of this embodiment further includes: a sealing ring 5.

[0069] The sealing ring 5 is sandwiched between the liquid inlet section 11 and the adapter seat 4 .

[0070] It is understood that in order to enhance the sealing performance between the liquid inlet section 11 and the adapter 4, this embodiment provides a sealing ring 5 between the liquid inlet section 11 and the adapter 4. The flexible structure of the sealing ring 5 can fill the gap between the liquid inlet section 11 and the adapter 4, preventing the fire extinguishing agent in the flow channel from leaking through the gap.

[0071] In a second aspect, this embodiment provides a fire extinguishing system, comprising: a fire extinguishing agent source, a nozzle, and the fire extinguishing nozzle as described above; the fire extinguishing agent source is connected to the fire extinguishing nozzle via the nozzle.

[0072] Specifically, since the fire extinguishing system includes a fire extinguishing nozzle, the specific structure of the fire extinguishing nozzle refers to the above embodiment, and the fire extinguishing system shown in this embodiment includes all the technical solutions of the above embodiment. Therefore, it has at least all the beneficial effects achieved by all the technical solutions of the above embodiment, which will not be repeated here one by one.

[0073] It is understandable that the fire extinguishing agent source is used to accommodate the fire extinguishing agent, the nozzle is used to connect the fire extinguishing agent source and the fire extinguishing nozzle and to transport the fire extinguishing agent, and the fire extinguishing nozzle is used to spray the fire extinguishing agent toward the fire source.

[0074] The fire extinguishing system provided by the present invention, due to the use of the above-mentioned fire extinguishing nozzle, can significantly increase the spray range and significantly reduce the spray droplet particle size, thereby achieving the compatibility effect of the fire extinguishing nozzle with long range and fine droplets.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fire extinguishing nozzle, characterized in that: include: A body, wherein a flow channel for the flow of the fire extinguishing agent is provided in the body, the body comprising a liquid inlet section and an atomizing section, one end of the liquid inlet section being connected to the atomizing section, and the other end of the liquid inlet section being sealedly connected to the nozzle; the liquid inlet section being a straight pipe section, and the atomizing section being a cone section, the atomizing section being used to atomize the fire extinguishing agent; a hemispherical screen installed in the liquid inlet section, with the inner concave arc surface of the hemispherical screen facing away from the nozzle, and the hemispherical screen being used for pre-atomizing and pre-diverting the fire extinguishing agent entering the liquid inlet section; A diversion component is installed in the liquid inlet section. Along the flow direction of the fire extinguishing agent, the diversion component is located on the rear side of the hemispherical screen. The diversion component is used to divert the fire extinguishing agent that has been pre-diverted.

2. The fire extinguishing nozzle according to claim 1, characterized in that: The diversion component includes: connecting plate; There are two diverter plates, and the two diverter plates are respectively arranged on both sides of the connecting plate; the diverter plates are provided with diverter holes, and the fire extinguishing agent flows through the diverter holes.

3. The fire extinguishing nozzle according to claim 2, characterized in that: The two diverter plates are arranged at an angle, and the diverter hole is arranged on one end of the diverter plate close to the connecting plate.

4. The fire extinguishing nozzle according to claim 1, characterized in that: The atomizing section includes: a first cone section and a second cone section; One end of the first cone section is connected to the liquid inlet section, and the other end is connected to the second cone section; The first cone segment is shorter than the second cone segment.

5. The fire extinguishing nozzle according to claim 4, characterized in that: The range of the fire extinguishing agent through the outlet of the second cone section is ≥10m, and the atomized particle size Dv90 at the outlet end of the second cone section is ≤50μm.

6. The fire extinguishing nozzle according to any one of claims 1 to 5, characterized in that: The body further includes a contraction section; The contraction section is arranged between the liquid inlet section and the atomization section. The contraction section is arranged as a straight pipe section. The inner wall size of the contraction section is smaller than the inner wall size of the liquid inlet section.

7. The fire extinguishing nozzle according to any one of claims 1 to 5, characterized in that: The outer wall of the main body is arranged in a regular hexagonal column shape.

8. The fire extinguishing nozzle according to claim 1, characterized in that: Also includes: adapter; The adapter is provided at one end of the liquid inlet section facing the nozzle, the adapter is hollow, the inner wall of the adapter is provided with an internal thread, the outer wall of the liquid inlet section is provided with an external thread, and the adapter is threadedly connected to the liquid inlet section; The hemispherical screen is arranged on the inner wall of the adapter.

9. The fire extinguishing nozzle according to claim 8, characterized in that: Also includes: sealing ring; The sealing ring is sandwiched between the liquid inlet section and the adapter seat.

10. A fire extinguishing system, characterized in that: include: A fire extinguishing agent source, a nozzle, and a fire extinguishing nozzle according to any one of claims 1 to 9; The fire extinguishing agent source is connected to the fire extinguishing nozzle through the nozzle.

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