Superfine water mist device based on charge regulation and control and fire retardance and explosion suppression system

Abstract

The invention relates to the technical field of fire fighting systems, and discloses a superfine water mist device based on charge regulation and control and a fire-retardant explosion-suppression system. The superfine water mist device based on charge regulation and control comprises a superfine water mist module and a charge regulation and control module, the superfine water mist module comprises an expansion cavity, a high-pressure airflow pipeline, a high-pressure water flow pipeline and a plurality of water mist nozzles, the high-pressure airflow pipeline and the high-pressure water flow pipeline are both connected with the expansion cavity, and the water mist nozzles are arranged on the expansion cavity and communicate with the high-pressure airflow pipeline and the high-pressure water flow pipeline; the charge regulation and control module is externally connected with high-voltage alternating current, the charge regulation and control module is arranged around the expansion cavity and forms a divergent cavity with the adjustable opening degree, and the water mist spray head is contained in the divergent cavity. A plurality of water mist spray head structures are adopted, so that the atomization amount and the spraying range of superfine water mist are increased, and the oxygen isolation suffocation and heat absorption cooling effects of the superfine water mist are enhanced; and meanwhile, the particle size of fog drops can be regulated and controlled in cooperation with the charge effect so as to adapt to different working environments.

Description

Technical Field

[0001] This application relates to the field of fire protection system technology, specifically to an ultrafine water mist device and a fire-arresting and explosion-suppressing system based on charge regulation. Background Technology

[0002] Water mist extinguishes flames effectively primarily through heat absorption and cooling, as well as oxygen deprivation and suffocation. Furthermore, water mist fire suppression systems are characterized by low water consumption, good insulation, and friendliness to personnel and the environment. As an alternative technology, water mist fire suppression has demonstrated significant advantages, attracting widespread attention from the fire protection community.

[0003] Currently, commonly used water mist fire suppression systems typically produce water mist particles with a diameter ranging from 20μm to 200μm. Fire suppression devices with water mist of this diameter are called "fine water mist" fire suppression devices. Fine water mist particles are relatively large, which usually limits their use in fire suppression and explosion prevention. Existing technologies use a two-stage atomizing chamber in series within the water mist nozzle to atomize the water mist. While this can produce ultrafine water mist with droplet diameters less than 20μm, the amount of ultrafine water mist produced is small, and the spray range is limited. Summary of the Invention

[0004] The purpose of this application is to provide an ultrafine water mist device and a fire-arresting and explosion-suppressing system based on charge regulation, so as to solve the problems of low atomization amount and small spray range of the ultrafine water mist generated by the water mist nozzle in the prior art.

[0005] To achieve the above objectives, in a first aspect, this application provides an ultrafine water mist device based on charge regulation, comprising:

[0006] An ultrafine water mist module includes an expansion cavity, a high-pressure airflow pipe, a high-pressure water flow pipe, and multiple water mist nozzles. Both the high-pressure airflow pipe and the high-pressure water flow pipe are connected to the expansion cavity. The multiple water mist nozzles are disposed on the expansion cavity and connected to the high-pressure airflow pipe and the high-pressure water flow pipe.

[0007] The charge control module is connected to an external high-voltage AC power supply. The charge control module is arranged around the expansion cavity to form a gradually expanding cavity with an adjustable opening. The water mist nozzle is housed in the gradually expanding cavity.

[0008] As a further improvement to the above technical solution:

[0009] In one possible implementation, the charge control module includes:

[0010] An insulating fixing base is provided with a clearance hole for the expansion cavity to pass through;

[0011] The charge shield assembly is movably mounted on the insulating base and externally connected to the high-voltage AC power supply; the charge shield assembly has the gradually expanding cavity; and

[0012] An opening adjustment component is disposed on the insulating fixed base and connected to the charge cover assembly, and is used to adjust the opening size of the gradually expanding cavity.

[0013] In one possible implementation, the charge cover assembly includes a plurality of charged plates arranged sequentially around the axis of the clearance hole. The charged plates are slidably engaged with the insulating fixing base. The insulating fixing base is also provided with a first strip-shaped limiting groove for adjusting the opening degree of the charged plates. The charged plates are provided with a mating block that slidably engages with the first strip-shaped limiting groove.

[0014] The opening adjustment assembly includes an opening turntable that rotates with the insulating fixed base. The opening turntable is slidably connected to each of the charged plates and is used to drive all the charged plates to converge toward the axis of the clearance hole or expand outward.

[0015] In one possible implementation, the charged sheet includes:

[0016] Charged column;

[0017] A boss portion is located on one side of the charged post facing the axis of the clearance hole. The boss portion near the insulating fixing seat has a mating block, and the boss portion away from the insulating fixing seat has a second strip-shaped limiting groove. The opening turntable near the boss portion has a mating shaft that slides with the second strip-shaped limiting groove.

[0018] The sheet portion is disposed at the end of the charged post away from the insulating fixing base, and the perpendicular distance between the sheet portion and the axis of the clearance hole gradually increases along the extending direction of the sheet portion.

[0019] In one possible implementation, the opening adjustment assembly further includes at least one first locking member, which passes through the opening turntable along the axial direction of the clearance hole and is threadedly engaged with the opening turntable, and the first locking member is used to abut against the insulating fixing seat.

[0020] In one possible implementation, the charge shield assembly includes a first rotating ring and a plurality of charge plates arranged sequentially around the axis of the first rotating ring, the first rotating ring being rotatably engaged with the insulating fixing base, and the charge plates being hingedly engaged with the first rotating ring.

[0021] The opening adjustment assembly includes a second rotating ring, which is sleeved on the insulating fixing base and threadedly engaged with the insulating fixing base. A connecting rod corresponding to the charged plate is hinged on the second rotating ring, and the end of the connecting rod away from the second rotating ring is hinged to the corresponding charged plate.

[0022] In one possible implementation, the opening adjustment assembly further includes at least one second locking member, which passes through the second rotating ring in the radial direction of the clearance hole and is threadedly engaged with the second rotating ring, the second locking member being used to abut against the insulating fixing seat.

[0023] In one possible implementation, the charge shield assembly includes a first rotating ring and a plurality of charge plates arranged sequentially around the axis of the first rotating ring, the first rotating ring being fixedly connected to the insulating fixing base, and the charge plates being hinged to the first rotating ring.

[0024] The opening adjustment assembly includes a third rotating ring and a lifting mechanism. The third rotating ring is sleeved on the insulating fixed base and slides in cooperation with the insulating fixed base. A connecting rod corresponding to the charged plate is hinged on the third rotating ring. The end of the connecting rod away from the third rotating ring is hinged to the corresponding charged plate. The lifting mechanism is disposed on the insulating fixed base and connected to the third rotating ring.

[0025] In one possible implementation, the charge-controlled ultrafine water mist device further includes a water mist regulating ring assembly, with the water mist regulating ring assembly provided at the end of each water mist nozzle, and the water mist regulating ring assembly having an adjustable-diameter water mist outlet.

[0026] In one possible implementation, the water mist regulating ring assembly includes:

[0027] A retaining ring is used to connect the water mist nozzle;

[0028] A rotating ring is arranged opposite to the fixed ring and rotates in conjunction with the fixed ring.

[0029] Multiple adjusting plates are disposed between the fixed ring and the rotating ring, and the multiple adjusting plates are distributed sequentially around the rotation axis of the rotating ring;

[0030] The rotating ring is used to drive all the adjusting plates to converge toward or expand outward toward the rotation axis of the rotating ring.

[0031] In one possible implementation, the fixed ring is provided with a first guide limiting hole distributed around the rotation axis of the rotating ring, corresponding to the adjusting piece;

[0032] The rotating ring is provided with second guide limiting holes distributed around the rotation axis of the rotating ring, corresponding to the adjusting plate;

[0033] One side of the adjusting plate is provided with a limiting block that slides with the first guide limiting hole, and the other side is provided with a limiting shaft that slides with the second guide limiting hole. The end dimension of the limiting block is larger than the width dimension of the first guide limiting hole, and the end dimension of the limiting shaft is larger than the width dimension of the second guide limiting hole.

[0034] In one possible implementation, the outer edge of the fixing ring is provided with a ring cover that limits the adjustment piece.

[0035] To achieve the above objectives, in a second aspect, this application also provides a fire-retardant and explosion-suppressing system, including at least one charge-controlled ultrafine water mist device provided in the first aspect above.

[0036] Compared to existing technologies, the beneficial effects of this application are:

[0037] This application provides a charge-controlled ultrafine water mist device and a fire-arresting and explosion-suppressing system. During fire extinguishing and explosion-suppressing operations, the charge-controlled ultrafine water mist device simultaneously supplies high-pressure airflow and high-pressure water flow to multiple water mist nozzles via high-pressure airflow and high-pressure water flow pipes. Under the synergistic effect of the high-pressure airflow and high-pressure water flow, the nozzles reduce the droplet size of the sprayed water mist, thus forming ultrafine water mist. The simultaneous spraying from multiple nozzles significantly increases the atomization amount of the ultrafine water mist and expands the spray range, thereby enhancing the oxygen-barrier and heat-absorbing cooling effects of the ultrafine water mist. Furthermore, by rationally setting the spacing between adjacent nozzles, the ultrafine water mist sprayed from surrounding and adjacent nozzles collide and break apart, resulting in even smaller droplet sizes of ultrafine water mist.

[0038] Furthermore, the ultrafine water mist sprayed from the water mist nozzle passes through a gradually expanding cavity formed by the charge control module. Since the charge control module is externally connected to a high-voltage alternating current, it applies a charge to the droplets. Under the influence of this charge, the droplets overcome surface tension and break down further, forming ultrafine water mist with even smaller droplet sizes. Additionally, the opening of the gradually expanding cavity of the charge control module can be adjusted according to the spray range of the ultrafine water mist to ensure the stability of the charge applied to the droplets without affecting the spray range or atomization volume. Moreover, the voltage of the charge control module can be adjusted to regulate the charge applied to the droplets, thereby adjusting the droplet size to adapt to different operating environments. Furthermore, the charge control module can imbue the droplets with a charge opposite to the flame polarity, thus enhancing the flame's adsorption of the ultrafine water mist.

[0039] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0040] The accompanying drawings are provided to further illustrate this application and form part of the specification. They are used together with the following detailed description to explain this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0041] Figure 1 A schematic diagram of the structure of an ultrafine water mist device based on charge regulation provided in an embodiment of this application is shown;

[0042] Figure 2 It shows Figure 1 A magnified view of a portion of point A in the middle;

[0043] Figure 3 A three-dimensional structural schematic diagram of the first charge control module in the ultrafine water mist device based on charge control provided in the embodiments of this application is shown.

[0044] Figure 4 It shows Figure 3 The diagram shows an exploded view of the first type of charge control module.

[0045] Figure 5 It shows Figure 4 The diagram shows the structure of the insulating fixing base in the first type of charge control module.

[0046] Figure 6 It shows Figure 4 A three-dimensional structural diagram of the charged plate in the first type of charge control module is shown.

[0047] Figure 7 An exploded schematic diagram of the water mist regulating ring assembly in the charge-controlled ultrafine water mist device provided in the embodiments of this application is shown.

[0048] Figure 8 A three-dimensional structural schematic diagram of the second charge control module in the ultrafine water mist device based on charge control provided in the embodiments of this application is shown;

[0049] Figure 9 A three-dimensional structural schematic diagram of the third type of charge control module in the ultrafine water mist device based on charge control provided in the embodiments of this application is shown.

[0050] Explanation of reference numerals in the attached figures:

[0051] 100. Ultra-fine water mist module; 110. Water mist nozzle; 111. Airflow channel; 112. Water flow channel; 113. Spiral guide vane; 120. High-pressure airflow pipe; 130. High-pressure water flow pipe; 140. Expansion cavity; 141. Water flow cavity; 142. Airflow cavity;

[0052] 200. Material spreading module;

[0053] 300. Charge control module; 301. Gradient expansion cavity; 310. Insulating fixing base; 311. Clearance hole; 312. Mounting hole; 313. First strip-shaped limiting groove; 314. Annular limiting groove; 320. Charge cover assembly; 321. Charged plate; 322. Charged column; 323. Boss part; 3230. Mating block; 3231. Second strip-shaped limiting groove; 324. Plate part; 325. First rotating ring; 326. Charged plate; 330. Opening adjustment assembly; 331. Opening turntable; 3310. Mating shaft; 332. Rotary limiting column; 333. Second rotating ring; 334. Connecting rod; 335. Third rotating ring; 336. Lifting mechanism; 337. First locking element; 338. Second locking element;

[0054] 400. Water mist regulating ring assembly; 401. Water mist outlet; 410. Fixing ring; 411. First guide limiting hole; 420. Rotating ring; 421. Second guide limiting hole; 430. Adjusting plate; 431. Limiting block; 440. Ring cover. Detailed Implementation

[0055] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the embodiments of this application.

[0056] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0057] In the embodiments of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0061] Example 1

[0062] Please see Figure 1 and Figure 2 This embodiment provides an ultrafine water mist device based on charge regulation, used to generate ultrafine water mist (micron-sized droplets) for fire extinguishing and explosion suppression.

[0063] The ultrafine water mist device based on charge control provided in this embodiment includes an ultrafine water mist module 100 and a charge control module 300. The ultrafine water mist module 100 is used to generate ultrafine water mist, and the charge control module 300 is used to apply a charge to the ultrafine water mist to further break up the droplets in the ultrafine water mist, thereby obtaining ultrafine water mist with smaller droplet sizes and improving the fire extinguishing and explosion suppression effect of the ultrafine water mist.

[0064] Specifically, the ultrafine water mist module 100 includes an expansion cavity 140, a high-pressure airflow pipe 120, a high-pressure water flow pipe 130, and multiple water mist nozzles 110. The high-pressure airflow pipe 120 and the high-pressure water flow pipe 130 are both connected to the expansion cavity 140, and the multiple water mist nozzles 110 are disposed on the expansion cavity 140 and connected to the high-pressure airflow pipe 120 and the high-pressure water flow pipe 130.

[0065] The expansion cavity 140 has a double-layer cavity structure, comprising a water flow cavity 141 and an air flow cavity 142. The water flow cavity 141 is located in the inner layer, and the air flow cavity 142 surrounds it. The air flow cavity 142 is connected to a high-pressure airflow pipe 120, and the water flow cavity 141 is connected to a high-pressure water flow pipe 130. The high-pressure airflow pipe 120 supplies high-pressure airflow, and the high-pressure water flow pipe 130 supplies high-pressure water.

[0066] Multiple water mist nozzles 110 are disposed on the outer peripheral surface of the airflow cavity 142. In this embodiment, the water mist nozzle 110 has an airflow channel 111 and a water flow channel 112 arranged coaxially. The airflow channel 111 is connected to the high-pressure airflow pipe 120, and the water flow channel 112 is connected to the high-pressure water flow pipe 130. The high-pressure water flow pipe 130 extends inside the high-pressure airflow pipe 120 to form a sleeve structure, so as to facilitate connection to the airflow cavity 142.

[0067] Understandably, the expansion cavity 140 increases the surface area for mounting the water mist nozzle 110, making it easier to install more water mist nozzles 110.

[0068] Optionally, the multiple water mist nozzles 110 are arranged in a radial array, that is, the water mist nozzle 110 in the middle is surrounded by the water mist nozzles 110 arranged around it, so that the sprayed ultrafine water mist is evenly distributed.

[0069] Optionally, the nozzle diameter of the water mist nozzle 110 is 0.2mm-1mm to obtain ultrafine water mist with smaller particle size.

[0070] Optionally, both the airflow cavity 142 and the waterflow cavity 141 can be configured as a hemispherical or spherical shape. Of course, they can also be cylindrical, spherical, or other shapes.

[0071] Understandably, when fire extinguishing and explosion suppression operations are carried out, high-pressure airflow and high-pressure water flow are supplied to the water mist nozzle 110 through the high-pressure airflow pipe 120 and the high-pressure water flow pipe 130. Under the synergy of the high-pressure airflow and high-pressure water flow, the water mist nozzle 110 reduces the droplet size of the sprayed water mist, thereby forming an ultrafine water mist. The ultrafine water mist has excellent cooling and heat absorption, free radical quenching, strong fluidity, high porosity, and environmental friendliness. In complex confined spaces, it has a more superior fire extinguishing and explosion suppression effect compared to existing fine water mist.

[0072] Multiple water mist nozzles 110 are connected to high-pressure airflow pipes 120 and high-pressure water flow pipes 130. This increases the spray range of the ultrafine water mist, increases the spray flow rate of the ultrafine water mist, and enhances the oxygen-barrier and heat-absorbing cooling effects of the ultrafine water mist. At the same time, by reasonably setting the spacing between two adjacent water mist nozzles 110, the ultrafine water mist sprayed from the surrounding and adjacent water mist nozzles 110 will collide and break with each other, further reducing the droplet size of the ultrafine water mist.

[0073] In some embodiments, the high-pressure water flow pipe 130 is further equipped with a dispensing module 200 that automatically dispenses water-soluble extinguishing agent into the high-pressure water flow pipe 130. It is understood that adding additives such as metal salts and surfactants to the water-soluble extinguishing agent can enhance the extinguishing effect of the water mist while increasing conductivity (improving the electrostatic effect of droplets under charged conditions). The dispensing module 200 can be turned on or off according to the extinguishing requirements, reducing the risk of corrosion to the water supply system of the high-pressure water flow pipe 130.

[0074] In this embodiment, the charge control module 300 is arranged around the expansion cavity 140 to form a gradually expanding cavity 301 with an adjustable opening, and the water mist nozzle 110 is housed in the gradually expanding cavity 301. The charge control module 300 is externally connected to a high-voltage AC power supply.

[0075] Understandably, the ultrafine water mist sprayed by the water mist nozzle 110 needs to pass through the gradually expanding cavity 301 formed by the charge control module 300. Since the charge control module 300 is externally connected to a high-voltage AC power source, the charge control module 300 applies a charge to the droplets. Under the action of the charge, the droplets overcome surface tension and further break up, forming ultrafine water mist with even smaller droplet sizes (droplet size less than 10μm). Furthermore, the spatial distribution of the charged ultrafine water mist is more uniform, and the suspension residence time is longer.

[0076] Furthermore, the opening degree of the gradually expanding cavity 301 of the charge control module 300 can be adjusted according to the size of the ultrafine water mist spray range to ensure the stability of the charge force applied to the droplets by the charge control module 300, without affecting the spray range and atomization amount of the ultrafine water mist. Moreover, the magnitude of the charge force applied to the droplets by the charge control module 300 can be adjusted by regulating the voltage of the charge control module 300, thereby regulating the droplet size in the ultrafine water mist.

[0077] Furthermore, the charge control module 300 can make the droplets carry a charge opposite to that of the flame, thereby enhancing the flame's adsorption of ultrafine water mist.

[0078] It should be noted that water mist fire extinguishing systems, where the fine water mist particle size is mostly in the range of 20-200μm, typically have limitations. For example, large-diameter droplets are less likely to reach flames in complex areas or behind obstacles, resulting in low extinguishing efficiency; large-diameter water mist can easily accumulate on protected objects, forming water streams and damaging equipment. Furthermore, large-diameter fine water mist can even promote the explosion of flammable gases.

[0079] In this embodiment, the ultrafine water mist generated by the ultrafine water mist module 100 has a droplet size of less than 10 μm. Furthermore, the ultrafine water mist has the following advantages compared to the "fine water mist" in the prior art:

[0080] (1) Ultrafine water mist is different from ordinary fine water mist. Ultrafine water mist has extremely high aerosol stability. The droplets can stay in the air for a long time to prevent the flame from reigniting.

[0081] (2) Due to the microfluidic properties of ultrafine water mist, ultrafine water mist can easily cross obstacles, corners and other complex areas in confined spaces to reach the flame zone, and be attracted by the flame to achieve rapid heat absorption and efficient fire extinguishing.

[0082] (3) Because ultrafine water mist evaporates quickly, it will not wet the equipment, and electronic equipment in confined spaces can continue to work without being damaged by water;

[0083] (4) Ultrafine water mist can mix with combustible gas, reducing the explosion limit of combustible gas. When the concentration of ultrafine water mist reaches a certain amount, combustible gas cannot explode, thus achieving the explosion suppression effect.

[0084] In some embodiments, a spiral guide vane 113 is provided in the airflow channel 111, and the high-pressure airflow forms a high-speed spiral airflow after passing through the spiral guide vane 113. It can be understood that under the action of the high-speed spiral airflow, the ultrafine water mist can move radially, thereby expanding the coverage area of ​​the ultrafine water mist; furthermore, it can reduce the particle size of the ultrafine water mist (after the high-speed spiral airflow applies shear force and tensile force to the droplets to overcome the surface force of the droplets, the droplets will be further broken up, and the particle size will be further reduced), thereby enhancing the oxygen-barrier and heat-absorbing cooling effect of the ultrafine water mist, and improving the fire extinguishing and explosion suppression effect.

[0085] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5 In this embodiment, the charge control module 300 includes an insulating base 310, a charge cover assembly 320, and an opening adjustment assembly 330. The insulating base 310 is provided with a clearance hole 311 for the expansion cavity 140 to pass through. The charge cover assembly 320 is movably disposed on the insulating base 310 and externally connected to a high-voltage AC power supply. The charge cover assembly 320 has a gradually expanding cavity 301.

[0086] Thus, when installing the insulating mounting base 310, the expansion cavity 140 can be passed through the clearance hole 311 of the insulating mounting base 310 so that all the water mist nozzles 110 are located in the expansion cavity 301, and then the insulating mounting base 310 is connected to the high-pressure airflow pipe 120.

[0087] The opening adjustment component 330 is disposed on the insulating fixing base 310 and connected to the charge cover assembly 320. The opening adjustment component 330 is used to adjust the opening size of the gradually expanding cavity 301.

[0088] Specifically, in this embodiment, the insulating fixing base 310 is an annular plate structure, and the insulating fixing base 310 is provided with mounting holes 312 for easy installation and fixing. The charge cover assembly 320 includes a plurality of charged plates 321 arranged sequentially around the axis of the clearance hole 311. The charged plates 321 are slidably engaged with the insulating fixing base 310. The insulating fixing base 310 is also provided with a first strip-shaped limiting groove 313 for adjusting the opening of the charged plates 321. The charged plates 321 are provided with a mating block 3230 that slidably engages with the first strip-shaped limiting groove 313. When adjusting the opening, the mating block 3230 on the charged plate 321 slides along the first strip-shaped limiting groove 313, thereby constraining the movement direction of the charged plate 321 relative to the insulating fixing base 310. This movement direction can realize the adjustment of the distance between the charged plate 321 and the axis of the clearance hole 311.

[0089] The opening adjustment assembly 330 includes an opening turntable 331 that rotatably engages with the insulating fixing base 310. The opening turntable 331 is slidably connected to each charged plate 321. The opening turntable 331 is used to drive all charged plates 321 to synchronously converge toward the axis of the clearance hole 311 or expand outward. Specifically, the opening turntable 331 is provided with a plurality of rotation limit posts 332, which are distributed around the axis of the opening turntable 331. The insulating fixing base 310 is provided with an annular limiting groove 314, the axis of which coincides with the axis of the clearance hole 311. When the opening turntable 331 is assembled with the insulating fixing base 310, multiple rotating limiting posts 332 are engaged in the annular limiting groove 314 and can move along the annular limiting groove 314. The end dimensions of the rotating limiting posts 332 are larger than the width of the annular limiting groove 314. This prevents the opening turntable 331 from separating from the insulating fixing base 310 and allows the opening turntable 331 to rotate relative to the insulating fixing base 310. When fire extinguishing and explosion suppression operations need to be initiated, the opening turntable 331 is connected to high-voltage AC power to charge the ultrafine water mist.

[0090] Please refer to the following: Figure 6Furthermore, the charged plate 321 includes a charged post 322, a boss portion 323, and a plate body portion 324. The boss portion 323 is located on the side of the charged post 322 facing the axis of the clearance hole 311. The side of the boss portion 323 near the insulating fixing base 310 is provided with the mating block 3230, and the side of the boss portion 323 away from the insulating fixing base 310 is provided with a second strip-shaped limiting groove 3231. The opening turntable 331 is provided with a mating shaft 3310 that slides with the second strip-shaped limiting groove 3231 on the side near the boss portion 323. The boss portion 323 is clamped and limited by the opening turntable 331 and the insulating fixing seat 310. When the opening turntable 331 is rotated, the cooperating shaft 3310 slides relative to each other in the second strip-shaped limiting groove 3231 and rotates relative to each other, so as to drive the entire charged sheet 321 to slide along the first strip-shaped limiting groove 313. In this way, all the charged sheets 321 move synchronously, thereby realizing the opening adjustment.

[0091] The plate portion 324 is disposed at the end of the charged post 322 away from the insulating fixing base 310. Along the extending direction of the plate portion 324, the perpendicular distance between the plate portion 324 and the axis of the clearance hole 311 gradually increases, thereby forming the gradually expanding cavity 301.

[0092] In this embodiment, the charged post 322, the boss portion 323 and the sheet portion 324 in the charged sheet 321 are integrally formed structures, but welding can also be used for connection.

[0093] In some embodiments, the opening adjustment assembly 330 further includes at least one first locking member 337, which passes through the opening turntable 331 along the axial direction of the clearance hole 311 and is threadedly engaged with the opening turntable 331. Thus, when the opening turntable 331 is rotated to a suitable position, the first locking member 337 is tightened to cause its end to abut against the insulating fixing seat 310, thereby restricting the relative movement between the opening turntable 331 and the insulating fixing seat 310. Optionally, the first locking member 337 may be a bolt or a screw.

[0094] Please see Figure 1 and Figure 7 Furthermore, the charge-controlled ultrafine water mist device also includes a water mist regulating ring assembly 400. Each water mist nozzle 110 has a water mist regulating ring assembly 400 at its end, and the water mist regulating ring assembly 400 has an adjustable-diameter water mist outlet 401. Thus, by adjusting the size of the water mist outlet 401, the spray distance and spray range of the ultrafine water mist sprayed by the corresponding water mist nozzle 110 can be adjusted.

[0095] It should be noted that, due to the complex applications of ultrafine water mist in fire extinguishing and explosion suppression, and the diverse usage requirements of the device, a single-structure preparation device is not suitable for all occasions. In this embodiment, the water mist regulating ring assembly 400 is designed to automatically adjust the size of the water mist outlet 401 according to requirements such as flow rate, coverage area, and installation height, so that the prepared ultrafine water mist can meet the application requirements of the current environment, greatly improving its practicality.

[0096] Understandably, when the water mist outlet 401 of the water mist regulating ring assembly 400 is in an inwardly contracted state, the water mist regulating ring assembly 400 has a minimal flow area. Correspondingly, with a small flow area and a high gas velocity at the outlet, the ultrafine water mist can be sprayed a greater distance, thus more accurately reaching the target location to achieve fire extinguishing and explosion suppression effects. Furthermore, in this state, the ultrafine water mist, under the action of a high-speed rotating high-pressure airflow, ensures a large amount of ultrafine water mist is obtained within a small area, thereby enhancing the oxygen-barrier and heat-absorbing cooling effects of the ultrafine water mist to improve fire extinguishing efficiency. This state of ultrafine water mist is also suitable for explosion prevention and suppression in gas leaks. Moreover, under the action of a high-speed rotating high-pressure airflow, the particle size of the ultrafine water mist can be further reduced (after the shearing and tensile forces of high-speed rotation overcome the surface forces of the droplets, the droplets will further break up, and the particle size will further decrease), thereby enhancing the oxygen-barrier and heat-absorbing cooling effects of the ultrafine water mist.

[0097] Furthermore, with the water mist outlet 401 of the water mist regulating ring assembly 400 in an outward expanding state, the water mist regulating ring assembly 400 has a larger flow area. Correspondingly, the larger flow area results in a larger flow rate and coverage area for the ultrafine water mist. Simultaneously, the ejected gas velocity is slow, and the high-pressure gas has a weaker ability to break up droplets, resulting in relatively larger droplet sizes in the ultrafine water mist. Therefore, ultrafine water mist in this state is more suitable for extinguishing large-scale pool fires.

[0098] In this embodiment, after installing the charge-controlled ultrafine water mist device, the size of the water mist outlet 401 is first adjusted by the water mist adjustment ring assembly 400 according to the actual environmental conditions to ensure that the sprayed ultrafine water mist meets the current requirements. Then, the charge of the charge control module 300 and the opening of the gradually expanding cavity 301 are adjusted according to the spray speed and spray range of the sprayed ultrafine water mist to ensure the stability of the charge force applied to the droplets by the charge control module 300, improve the charging effect, and at the same time not affect the spray range and atomization amount of the ultrafine water mist.

[0099] The aforementioned water mist regulating ring assembly 400 includes a fixed ring 410, a rotating ring 420, and multiple regulating plates 430. The fixed ring 410 is connected to the water mist nozzle 110, for example, by threaded connection, snap-fit, or welding. The rotating ring 420 is arranged opposite to the fixed ring 410 and rotatably engages with the fixed ring 410. Multiple regulating plates 430 are disposed between the fixed ring 410 and the rotating ring 420, and the multiple regulating plates 430 are sequentially distributed around the rotation axis of the rotating ring 420, thereby forming an adjustable water mist outlet 401. The rotating ring 420 is used to drive all the regulating plates 430 to converge toward or expand outward toward the rotation axis of the rotating ring 420.

[0100] Specifically, the fixed ring 410 is provided with first guide limiting holes 411 distributed around the rotation axis of the rotating ring 420, corresponding to the adjusting plate 430; the rotating ring 420 is provided with second guide limiting holes 421 distributed around the rotation axis of the rotating ring 420, corresponding to the adjusting plate 430; that is, multiple first guide limiting holes 411 and multiple second guide limiting holes 421 are provided. One side of the adjusting plate 430 is provided with a limiting block 431 that slides with the first guide limiting hole 411, and the other side is provided with a limiting shaft that slides with the second guide limiting hole 421. Thus, when the rotating ring 420 is rotated, the rotating ring 420 will drive all the adjusting plates 430 to converge towards the rotation axis of the rotating ring 420 or expand outward, thereby adjusting the size of the water mist outlet 401.

[0101] The end dimension of the limiting block 431 is larger than the width dimension of the first guide limiting hole 411, and the end dimension of the limiting shaft is larger than the width dimension of the second guide limiting hole 421, so as to restrict the axial movement between the rotating ring 420 and the fixed ring 410.

[0102] In some embodiments, the outer edge of the fixed ring 410 is provided with a ring cover 440 of a limiting adjustment piece 430. Specifically, the adjustment piece 430 is kept in contact with the inner wall surface of the ring cover 440. When the fixed ring 410 and the ring cover 440 are combined, they can form a cover-like structure to provide a stable operating space for the adjustment ring, so as to ensure that the adjustment ring can operate stably between the fixed ring 410 and the rotating ring 420.

[0103] Furthermore, this embodiment also provides a fire-arresting and explosion-suppressing system, including at least one ultrafine water mist device based on charge regulation provided in Embodiment 1 above.

[0104] Example 2

[0105] Please see Figure 1 and Figure 8 This embodiment provides an ultrafine water mist device based on charge regulation. This embodiment is an improvement upon the technology of Embodiment 1 described above. The differences between Embodiment 1 and Embodiment 1 are as follows:

[0106] In this embodiment, the insulating fixing base 310 has a cylindrical structure. The charged cover assembly 320 includes a first rotating ring 325 and a plurality of charged plates 326 arranged sequentially around the axis of the first rotating ring 325. The first rotating ring 325 is rotatably engaged with the insulating fixing base 310, and the charged plates 326 are hinged to the first rotating ring 325. Thus, the plurality of charged plates 326 surround the first rotating ring 325 to form the gradually expanding cavity 301. When fire extinguishing and explosion suppression operations need to be initiated, the first rotating ring 325 is connected to high-voltage AC power to charge the ultrafine water mist.

[0107] The opening adjustment assembly 330 includes a second rotating ring 333, which is sleeved on the insulating fixing base 310 and threadedly engaged with the insulating fixing base 310. Specifically, an external thread is provided on the outer circumferential surface of the insulating fixing base 310, and a matching internal thread is provided on the inner circumferential surface of the second rotating ring 333. A connecting rod 334 corresponding to the charged plate 326 is hinged to the second rotating ring 333, with one end of the connecting rod 334 away from the second rotating ring 333 hinged to the corresponding charged plate 326. Thus, by rotating the second rotating ring 333, the second rotating ring 333 moves up and down along its own axis, thereby causing the corresponding charged plate 326 to converge inward or expand outward through the hinged connecting rod 334.

[0108] In some embodiments, the opening adjustment assembly 330 further includes at least one second locking member 338, which passes through the second rotating ring 333 in the radial direction of the clearance hole 311 and is threadedly engaged with the second rotating ring 333. Thus, after the second rotating ring 333 is rotated to a preset position, tightening the second locking member 338 causes it to abut against the insulating fixing seat 310, thereby restricting the movement of the second rotating ring 333 relative to the insulating fixing seat 310 and achieving locking. Optionally, the second locking member 338 may be a bolt or a screw.

[0109] Furthermore, this embodiment also provides a fire-arresting and explosion-suppressing system, including at least one ultrafine water mist device based on charge regulation provided in Embodiment 2 above.

[0110] Example 3

[0111] Please see Figure 1 and Figure 9 This embodiment provides an ultrafine water mist device based on charge regulation. This embodiment is an improvement upon the technology of Embodiment 1 or Embodiment 2 described above. The difference between this embodiment and Embodiment 1 or Embodiment 2 lies in:

[0112] In this embodiment, the insulating fixing base 310 has a cylindrical structure. The charged cover assembly 320 includes a first rotating ring 325 and a plurality of charged plates 326 arranged sequentially around the axis of the first rotating ring 325. The first rotating ring 325 is fixedly connected to the insulating fixing base 310 (by adhesive, threaded connection, or snap-fit) and there is no relative movement. The charged plates 326 are hinged to the first rotating ring 325. Thus, the plurality of charged plates 326 form a gradually expanding cavity 301 around the first rotating ring 325. When fire extinguishing and explosion suppression operations need to be initiated, the first rotating ring 325 is connected to high-voltage AC power to charge the ultrafine water mist.

[0113] The opening adjustment assembly 330 includes a third rotating ring 335 and a lifting mechanism 336. The third rotating ring 335 is sleeved on and slidably engaged with the insulating fixed base 310. A connecting rod 334 corresponding to the charged plate 326 is hinged to the third rotating ring 335. The end of the connecting rod 334 away from the third rotating ring 335 is hinged to the corresponding charged plate 326. The lifting mechanism 336 is disposed on the insulating fixed base 310 and connected to the third rotating ring 335. The lifting mechanism 336 can drive the third rotating ring 335 to move in its own axial direction, thereby causing the corresponding charged plate 326 to converge inward or expand outward through the hinged connecting rod 334.

[0114] Optionally, the lifting mechanism 336 may be a lead screw mechanism, an electric push rod, an electric cylinder, or a pneumatic cylinder, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.

[0115] Furthermore, this embodiment also provides a fire-arresting and explosion-suppressing system, including at least one ultrafine water mist device based on charge regulation provided in Embodiment 3 above.

[0116] The optional embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present application are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present application, various simple modifications can be made to the technical solutions of the embodiments of the present application, and these simple modifications all fall within the protection scope of the embodiments of the present application.

[0117] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, the embodiments of this application will not describe the various possible combinations separately.

[0118] Furthermore, various different implementation methods of the embodiments of this application can be combined arbitrarily, as long as they do not violate the spirit of the embodiments of this application, they should also be regarded as the content disclosed in the embodiments of this application.

Claims

1. A device for generating ultrafine water mist based on charge regulation, characterized in that, include: An ultrafine water mist module (100) includes an expansion cavity (140), a high-pressure airflow pipe (120), a high-pressure water flow pipe (130), and multiple water mist nozzles (110). The high-pressure airflow pipe (120) and the high-pressure water flow pipe (130) are both connected to the expansion cavity (140). The multiple water mist nozzles (110) are disposed on the expansion cavity (140) and connected to the high-pressure airflow pipe (120) and the high-pressure water flow pipe (130). The charge control module (300) is connected to a high-voltage AC power source. The charge control module (300) is arranged around the expansion cavity (140) to form a gradually expanding cavity (301) with an adjustable opening. The water mist nozzle (110) is housed in the gradually expanding cavity (301).

2. The ultrafine water mist device based on charge regulation according to claim 1, characterized in that, The charge control module (300) includes: The insulating mounting base (310) is provided with a clearance hole (311) for the expansion cavity (140) to pass through; A charge shield assembly (320) is movably mounted on the insulating base (310) and externally connected to the high-voltage AC power supply. The charge shield assembly (320) has the expanding cavity (301). An opening adjustment component (330) is disposed on the insulating fixing base (310) and connected to the charge cover assembly (320) for adjusting the opening size of the gradually expanding cavity (301).

3. The ultrafine water mist device based on charge regulation according to claim 2, characterized in that, The charge cover assembly (320) includes a plurality of charged plates (321) arranged sequentially around the axis of the clearance hole (311). The charged plates (321) are slidably engaged with the insulating fixing base (310). The insulating fixing base (310) is also provided with a first strip-shaped limiting groove (313) for adjusting the opening of the charged plates (321). The charged plates (321) are provided with a mating block (3230) that is slidably engaged with the first strip-shaped limiting groove (313). The opening adjustment assembly (330) includes an opening turntable (331) that rotates with the insulating base (310). The opening turntable (331) is slidably connected to each of the charged plates (321) and is used to drive all the charged plates (321) to converge toward the axis of the clearance hole (311) or expand outward.

4. The ultrafine water mist device based on charge regulation according to claim 3, characterized in that, The charged plate (321) includes: Charged column (322); A boss (323) is provided on one side of the charged post (322) facing the clearance hole (311). The boss (323) has a mating block (3230) on the side near the insulating fixing seat (310), and a second strip-shaped limiting groove (3231) on the side away from the insulating fixing seat (310). The opening turntable (331) has a mating shaft (3310) on the side near the boss (323) that slides into the second strip-shaped limiting groove (3231). The sheet portion (324) is disposed at the end of the charged post (322) away from the insulating fixing base (310). Along the extending direction of the sheet portion (324), the vertical distance between the sheet portion (324) and the axis of the clearance hole (311) gradually increases.

5. The ultrafine water mist device based on charge regulation according to claim 3, characterized in that, The opening adjustment assembly (330) further includes at least one first locking member (337), which passes through the opening turntable (331) along the axial direction of the clearance hole (311) and is threadedly engaged with the opening turntable (331). The first locking member (337) is used to abut against the insulating fixing seat (310).

6. The ultrafine water mist device based on charge regulation according to claim 2, characterized in that, The charge shield assembly (320) includes a first rotating ring (325) and a plurality of charge plates (326) arranged sequentially around the axis of the first rotating ring (325). The first rotating ring (325) is rotatably engaged with the insulating fixing base (310), and the charge plates (326) are hinged to the first rotating ring (325). The opening adjustment assembly (330) includes a second rotating ring (333), which is sleeved on the insulating fixing seat (310) and threadedly engaged with the insulating fixing seat (310). A connecting rod (334) corresponding to the charged plate (326) is hinged on the second rotating ring (333), and one end of the connecting rod (334) away from the second rotating ring (333) is hinged to the corresponding charged plate (326).

7. The ultrafine water mist device based on charge regulation according to claim 6, characterized in that, The opening adjustment assembly (330) further includes at least one second locking member (338), which passes through the second rotating ring (333) in the radial direction of the clearance hole (311) and is threadedly engaged with the second rotating ring (333). The second locking member (338) is used to abut against the insulating fixing seat (310).

8. The ultrafine water mist device based on charge regulation according to claim 2, characterized in that, The charge shield assembly (320) includes a first rotating ring (325) and a plurality of charge plates (326) arranged sequentially around the axis of the first rotating ring (325). The first rotating ring (325) is fixedly connected to the insulating fixing base (310), and the charge plates (326) are hinged to the first rotating ring (325). The opening adjustment assembly (330) includes a third rotating ring (335) and a lifting mechanism (336). The third rotating ring (335) is sleeved on the insulating fixing base (310) and slides in cooperation with the insulating fixing base (310). A connecting rod (334) corresponding to the charged plate (326) is hinged on the third rotating ring (335). The end of the connecting rod (334) away from the third rotating ring (335) is hinged to the corresponding charged plate (326). The lifting mechanism (336) is disposed on the insulating fixing base (310) and connected to the third rotating ring (335).

9. The ultrafine water mist device based on charge regulation according to claim 1, characterized in that, The charge-controlled ultrafine water mist device also includes a water mist regulating ring assembly (400), and each water mist nozzle (110) is provided with the water mist regulating ring assembly (400) at its end. The water mist regulating ring assembly (400) has a water mist outlet (401) with an adjustable diameter.

10. The ultrafine water mist device based on charge regulation according to claim 9, characterized in that, The water mist regulating ring assembly (400) includes: A retaining ring (410) is connected to the water mist nozzle (110); A rotating ring (420) is arranged opposite to the fixed ring (410) and rotates in cooperation with the fixed ring (410); Multiple adjusting plates (430) are disposed between the fixed ring (410) and the rotating ring (420), and the multiple adjusting plates (430) are distributed sequentially around the rotation axis of the rotating ring (420); The rotating ring (420) is used to drive all the adjusting plates (430) to converge toward or expand outward toward the rotation axis of the rotating ring (420).

11. The ultrafine water mist device based on charge regulation according to claim 10, characterized in that, The fixed ring (410) is provided with a first guide limiting hole (411) distributed around the rotation axis of the rotating ring (420) corresponding to the adjusting piece (430); The rotating ring (420) is provided with a second guide limiting hole (421) distributed around the rotation axis of the rotating ring (420) corresponding to the adjusting plate (430); The adjusting plate (430) has a limiting block (431) on one side that slides with the first guide limiting hole (411), and a limiting shaft on the other side that slides with the second guide limiting hole (421). The end dimension of the limiting block (431) is larger than the width dimension of the first guide limiting hole (411), and the end dimension of the limiting shaft is larger than the width dimension of the second guide limiting hole (421).

12. The ultrafine water mist device based on charge regulation according to claim 10 or 11, characterized in that, The outer edge of the fixing ring (410) is provided with a ring cover (440) that limits the adjustment piece (430).

13. A fire-arresting and explosion-suppressing system, characterized in that, It includes at least one ultrafine water mist device based on charge regulation according to any one of claims 1-12.

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