CN112684099B

CN112684099B - Assembled turbulent flame extinguishing device

Info

Publication number: CN112684099B
Application number: CN202011505169.4A
Authority: CN
Inventors: 阮晓辉; 边会婷; 李静; 王东明; 魏子莹; 靳博阳
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2022-09-09
Anticipated expiration: 2040-12-18
Also published as: CN112684099A; CN117280209A; WO2022127932A1

Abstract

The invention discloses an assembled turbulent flame extinguishing device, which comprises an air box, a partition plate and an arc-shaped plate, wherein one side of the partition plate is fixedly connected with the inner wall of the air box, and one side of the partition plate is fixedly connected with one side of the arc-shaped plate. This assembled torrent flame extinguishing device, whether the rotation mode through the rotary drum plays the effect whether the control gas incasement gas circulates and velocity of flow size, utilize the gaseous entering of rotary drum quantitative control, provide the helping hand for providing more accurate fuel quality loss efficiency, 2 kinds of gases of packing into from the venthole to the inside of gas case experiment, only need rotate the rotary drum can control the flow of offside gas simultaneously, can more accurate control gas flow, the error is littleer, experimental data is more accurate, and this assembled torrent flame extinguishing device can realize rotating the rotary drum and observing gas entering simultaneously and to torrent flame flow field, the flame structure, the influence of typical characteristics such as flame colour, realize the dynamic observation experiment, can observe the fire behavior of water smoke and halohydrocarbon fire extinguishing agent dynamically.

Description

Assembled turbulent flame extinguishing device

Technical Field

The invention relates to the technical field of fire suppression devices, in particular to an assembled turbulent flame extinguishing device.

Background

Turbulent flames, also known as turbulent flames, have a different wave shape and propagation velocity than laminar flames. The turbulent flame front is continuously shaken and the flame front is very thick to form an area. The flame propagation velocity is equal to the pulsation velocity, the magnitude of which is related not only to the physicochemical properties and parameters of the combustible gas mixture, but also to the turbulent regime (i.e. the pulsation velocity). The turbulent flame is commonly found in grassland fires and forest fires, the research on the causes, control factors and the adopted fire extinguishing agents of the turbulent flame combustion have important significance on the fire fighting and fire safety of forests and grassland fires, at present, the research on the structure of the turbulent flame generally uses a heat driving type and a mechanical driving type, wherein the heat driving type adopts a four-wall and crack device, the principle is that after liquid or solid fuel is ignited, the flame can rapidly grow to consume surrounding oxygen, meanwhile, air at the periphery of the flame is heated to move upwards, so that the pressure in the combustion body is reduced, the formed pressure difference forces the peripheral fresh air to enter the combustion body through the slits, and due to the surrounding design of the peripheral slits, the entering gas rapidly forms a transverse tangential circulation around a fire source, the fresh air enters a flame combustion area along the transverse tangential line to maintain the combustion of the fuel, thereby forming turbulent flames under conditions of turbulence and having vortices of different sizes, a fluid sink having a flow direction that differs within different vortices, and air movement imparted to the horizontal surface with some friction or drag to form the bottom boundary of the vortices.

The existing turbulent flame extinguishing device has the following problems: the device is small to the inside gas flow of device, accurate control can't be realized to the direction, the error is great, the experimental data accuracy is lower, the application mode of fire extinguishing agent is only applied from the top of flame offset, the application mode is single, can't strictly measure the gas concentration of fire extinguishing agent and evaluate the validity that the fire extinguishing agent was put out a fire to the ration, and can't realize that dynamic control gas gets into influence and the dynamic observation experiment to characteristics such as torrent flame structure, current torrent flame extinguishing device also can't realize dynamic observation fine spray and halohydrocarbon fire extinguishing agent perpendicular to flame horizontal fire extinguishing performance when applying in addition.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an assembled turbulent flame extinguishing device, which solves the problems that the existing turbulent flame extinguishing device cannot realize accurate control on the gas flow in the device, has larger error and lower accuracy of experimental data, can change the application mode of the traditional fire extinguishing agent and flame hedging, can strictly and quantitatively measure the application component concentration of the fire extinguishing agent and evaluate the effectiveness of the fire extinguishing agent in extinguishing turbulent flame, can realize the influence of dynamically controlling gas to enter a flame combustion area on the typical characteristics of turbulent flame structure, color and the like and effectively implement dynamic observation experiments, and can realize the dynamic observation of the fire extinguishing performance when the water mist and the halohydrocarbon fire extinguishing agent are applied vertically to the flame level.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: the assembled turbulent flame extinguishing device comprises a gas box, a partition plate and an arc plate, wherein one side of the partition plate is fixedly connected with the inner wall of the gas box, one side of the partition plate is fixedly connected with one side of the arc plate, the top of the gas box is fixedly connected with a top plate, the bottom of the gas box is fixedly connected with a bottom plate, the inside of the gas box is movably connected with a rotary drum, a movable hole matched with the rotary drum is formed in the top plate, the bottom end of the rotary drum is rotatably connected with the top of the bottom plate, a baffle plate is slidably connected between the partition plate and one side, opposite to the arc plate, of the partition plate, a through hole matched with the baffle plate is formed in the top of the top plate, a sliding groove matched with the baffle plate is formed in the top of the bottom plate, and air holes are formed in the periphery of the inside of the bottom plate.

Preferably, the upper end of the rotating drum is in a cylindrical shape, and through grooves are formed in two opposite sides of the peripheral surface of the rotating drum and below the cylinder.

Preferably, the outer appearance of the gas box is a closed cylinder, and the gas box is made of transparent glass.

Preferably, the top of the bottom plate is provided with an annular groove matched with the rotary drum, and the bottom end of the rotary drum is movably connected with the inside of the annular groove.

Preferably, the baffle all is provided with four with the inside that the arc is located the gas tank to four baffles all are the equal angular distribution setting with four arcs about the central axis of gas tank, the inside of gas tank is separated with central symmetry mode by four baffles and four arcs, divide into four gas intervals with the inside of gas tank, and the inside of four air vents communicates with the inside of four gas intervals respectively.

Preferably, the height of the air box is 0.54m, the heights of the baffle plate and the rotary drum are 0.56m, and the thicknesses of the top plate and the bottom plate are 0.005 m.

Preferably, the baffle is provided with two in the inside of being located the gas tank, the through-hole is located the inside of roof and has seted up two to the spout is located the inside of bottom plate and has seted up two.

(III) advantageous effects

The invention provides an assembled turbulent flame extinguishing device. Compared with the prior art, the method has the following beneficial effects:

(1) the assembled turbulent flame extinguishing device is characterized in that a top plate is fixedly connected to the top of a gas box, a bottom plate is fixedly connected to the bottom of the gas box, a rotary drum is movably connected to the inside of the gas box, a movable hole matched with the rotary drum is formed in the top plate, the bottom end of the rotary drum is rotatably connected to the top of the bottom plate, a baffle is slidably connected between the baffle and one side, opposite to an arc-shaped plate, of the baffle, a through hole matched with the baffle is formed in the top of the top plate, a sliding groove matched with the baffle is formed in the top of the bottom plate, vent holes are formed in the periphery of the inside of the bottom plate, the function of the conventional turbulent flame extinguishing device can be achieved when the gas box is not combined with the rotary drum and the baffle, the conventional turbulent flame extinguishing device is inherited to quickly generate flame turbulence, the flame color can be conveniently observed, the flame radiation is recorded, the flame structure is observed, and the rotating mode of the rotary drum plays a role in controlling whether gas in the gas box circulates and the flow velocity, the rotary drum is used for quantitatively controlling the amount of gas entering, so that the power can be provided for providing more accurate fuel quality loss efficiency, and the baffle plate can effectively play a role in sealing gas and preventing the gas from leaking into the atmosphere.

(2) This assembled torrent flame extinguishing device, top fixedly connected with roof through the gas tank, and the bottom fixedly connected with bottom plate of gas tank, the inside swing joint of gas tank has the rotary drum, and the movable hole with rotary drum looks adaptation is seted up to the inside of roof, the bottom of rotary drum is rotated with the top of bottom plate and is connected, sliding connection has the baffle between the one side that baffle and arc are relative, the through-hole with baffle looks adaptation is seted up to the inside of roof, and the spout with baffle looks adaptation is seted up at the top of bottom plate, the air vent has all been seted up all around to the bottom plate is inside, utilize the rotation dynamic change gas entry speed and the air intake size of rotary drum, accomplish the observation of gas velocity of flow change to characteristic influences such as flame typical construction, let in the gas admission gas tank that has the colour through the air vent to gas tank inside, and then observe gaseous flow path.

(3) The assembled turbulent flame extinguishing device is characterized in that a top plate is fixedly connected to the top of a gas box, a bottom plate is fixedly connected to the bottom of the gas box, a rotary drum is movably connected to the inside of the gas box, a movable hole matched with the rotary drum is formed in the top plate, the bottom end of the rotary drum is rotatably connected to the top of the bottom plate, a baffle is slidably connected between one side of the baffle opposite to an arc plate, a through hole matched with the baffle is formed in the top plate, a sliding groove matched with the baffle is formed in the top of the bottom plate, vent holes are formed in the periphery of the inside of the bottom plate, 2 gases are filled into the gas box from the vent holes for experiment, the flow of the opposite gases can be simultaneously controlled by only rotating the rotary drum, the gas flow can be more accurately controlled, the error is smaller, the experimental data are more accurate, and the assembled turbulent flame extinguishing device can realize that the influence of gas entering on turbulent flame can be observed while rotating the rotary drum, realize the dynamic observation experiment, can dynamically observe the thin water smoke fire extinguishing performance.

Drawings

FIG. 1 is a perspective view of the assembled turbulent flame arrester configuration of the present invention;

FIG. 2 is an exploded view of the assembled turbulent flame arrester configuration of the present invention;

FIG. 3 is a top view of the internal structure of the gas cabinet of the present invention;

fig. 4 is a perspective view of the drum structure of the present invention.

In the figure, 1-an air box, 2-a partition plate, 3-an arc-shaped plate, 4-a top plate, 5-a bottom plate, 6-a rotating cylinder, 7-a movable hole, 8-a baffle plate, 9-a through hole, 10-a sliding chute, 11-a vent hole and 12-an annular groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the invention provides a technical solution: an assembled vortex flame device comprises a gas box 1, a partition plate 2 and arc-shaped plates 3, wherein the height of the gas box 1 is 0.54m, the heights of a baffle plate 8 and a rotary drum 6 are 0.56m, the thicknesses of a top plate 4 and a bottom plate 5 are 0.005m, the partition plate 2 and the arc-shaped plates 3 are arranged in the gas box 1, the four partition plates 2 and the four arc-shaped plates 3 are arranged in an equiangular distribution mode relative to the central axis of the gas box 1, the inside of the gas box 1 is divided into four gas sections in a centrosymmetric mode by the four partition plates 2 and the four arc-shaped plates 3, the inside of the gas box 1 is divided into four gas sections, the insides of four vent holes 11 are respectively communicated with the insides of the four gas sections, the outside of the gas box 1 is in a closed cylinder shape, the gas box 1 is made of transparent glass, one side of the partition plate 2 is fixedly connected with the inner wall of the gas box 1, and one side of the partition plate 2 is fixedly connected with one side of the arc-shaped plates 3, the top of the gas box 1 is fixedly connected with a top plate 4, the bottom of the gas box 1 is fixedly connected with a bottom plate 5, the top of the bottom plate 5 is provided with an annular groove 12 matched with the rotary drum 6, the bottom end of the rotary drum 6 is movably connected with the inside of the annular groove 12, the inside of the gas box 1 is movably connected with the rotary drum 6, the upper end of the rotary drum 6 is a cylinder, two opposite sides of the periphery of the rotary drum 6 are provided with a through groove below the cylinder, the inside of the top plate 4 is provided with a movable hole 7 matched with the rotary drum 6, the bottom end of the rotary drum 6 is rotatably connected with the top of the bottom plate 5, a baffle plate 8 is slidably connected between one side of the baffle plate 2 opposite to the arc-shaped plate 3, two baffle plates 8 are arranged inside the gas box 1, two through holes 9 are arranged inside the top plate 4, two sliding grooves 10 are arranged inside the bottom plate 5, the inside of the top plate 4 is provided with through holes 9 matched with the baffle plate 8, the top of the bottom plate 5 is provided with a sliding groove 10 adapted to the baffle plate 8, and the periphery of the inside of the bottom plate 5 is provided with vent holes 11, and the contents not described in detail in the present specification belong to the prior art known to those skilled in the art.

When in use, the first mode is as follows: igniting fuel, putting the fuel into the center of the bottom of the gas box 1, burning the fuel at the top of the bottom plate 5, inputting air or oxygen gas into the gas box 1 through four vent holes 11 in the bottom plate 5 by the gas transmission pipeline, rapidly consuming the oxygen in the device due to the burning of the fuel in the gas box 1, simultaneously heating the air to move upwards, reducing the pressure in the combustion body, forcing the gas in the gas interval into the combustion body due to the pressure difference, rapidly forming a transverse tangential circulation around the fire source by the gas entering due to the arc-shaped circular wall design in the gas box 1, thereby generating turbulent flame, and installing an observation system outside the gas box 1, carrying out the observation experiment of the conventional vortex flame by the thermocouple system, and controlling the flow of the input gas by the gas transmission pipeline through the calculation of the volume of the gas and the volume of the gas box 1 in the closed environment space, the volume of the introduced gas can be quantitatively measured; the second method comprises the following steps: from the upper part of the gas box 1, a movable hole 7 in the top plate 4 is inserted into a rotary drum 6, the bottom end of the rotary drum 6 is contacted with an annular groove 12 at the top of the bottom plate 5, the rotary drum 6 is rotated, a pair of side gases are introduced into a combustion area in the rotating process of the rotary drum 6 and are blocked, a gas pipeline inputs mixed gas consisting of oxygen or air, inert gas or halogenated hydrocarbon extinguishing agent and the like into the opposite side gas area through four vent holes 11 in the bottom plate 5 respectively, fuel is ignited and is put into the center of the bottom of the gas box 1, the fuel is combusted at the top of the bottom plate 5, the rotary drum 6 is slowly rotated to communicate 2 combustion-supporting gas areas with the combustion area, so that the 2 gas extinguishing agent areas of the inert gas and the like are blocked from the combustion area, and because the oxygen in the device is consumed by combustion, the air is heated and moves upwards, the pressure in the combustion body is reduced, the formed pressure difference forces oxygen or gas in the air interval to enter a combustion interval, the entered gas quickly forms a circular flow around a fire source due to the design of an arc-shaped circular wall inside the gas box 1, so that turbulent flame is generated, the rotary drum 6 is slowly rotated after the flame is stabilized, so that 2 oxygen or air intervals are separated from the combustion interval, 2 gas extinguishing agent intervals such as inert gas and the like are communicated with the combustion interval, the gas extinguishing agents such as the inert gas and the like can enter the combustion interval under the action of the pressure difference, and the action and the influence of the inert gas and the halohydrocarbon gas extinguishing agents on the turbulent flame can be dynamically observed outside; after the first and second modes are implemented, the gas supply of the gas transmission pipeline is stopped, the rotating drum 6 is rotated for a certain angle, and the baffle plate 8 is inserted, so that the gas in the gas box 1 can be completely sealed and prevented from being diffused into the atmosphere.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an assembled torrent flame extinguishing device, includes gas tank (1), baffle (2) and arc (3), the inner wall fixed connection of one side and gas tank (1) of baffle (2) to one side of baffle (2) and one side fixed connection of arc (3), its characterized in that: the top of the gas box (1) is fixedly connected with a top plate (4), the bottom of the gas box (1) is fixedly connected with a bottom plate (5), the inside of the gas box (1) is movably connected with a rotary drum (6), a movable hole (7) matched with the rotary drum (6) is formed in the top plate (4), the bottom end of the rotary drum (6) is rotatably connected with the top of the bottom plate (5), a baffle plate (8) is slidably connected between the baffle plate (2) and one side opposite to the arc-shaped plate (3), a through hole (9) matched with the baffle plate (8) is formed in the top plate (4), a sliding groove (10) matched with the baffle plate (8) is formed in the top of the bottom plate (5), air holes (11) are formed in the periphery of the bottom plate (5), the upper end of the rotary drum (6) is a cylindrical barrel, through grooves are formed in two sides opposite to the peripheral surface of the rotary drum (6) and below the cylindrical barrel, the outer appearance of the gas box (1) is a closed cylinder, the gas box (1) is made of transparent glass, the top of the bottom plate (5) is provided with an annular groove (12) matched with the rotary drum (6), the bottom end of the rotary drum (6) is movably connected with the inner part of the annular groove (12), four partition plates (2) and four arc-shaped plates (3) are arranged inside the gas box (1), the four partition plates (2) and the four arc-shaped plates (3) are distributed in an equal angle mode around the central axis of the gas box (1), the inner part of the gas box (1) is divided into four gas sections by the four partition plates (2) and the four arc-shaped plates (3) in a central symmetry mode, the inner part of the gas box (1) is divided into four gas sections, the inner parts of the four vent holes (11) are respectively communicated with the inner parts of the four gas sections, and two baffle plates (8) are arranged inside the gas box (1), the through holes (9) are located in the top plate (4) and are provided with two holes, and the sliding grooves (10) are located in the bottom plate (5) and are provided with two holes.

2. An assembled turbulent flame arrester as claimed in claim 1, wherein: the height of the air box (1) is 0.54m, the heights of the baffle plate (8) and the rotary drum (6) are both 0.56m, and the thicknesses of the top plate (4) and the bottom plate (5) are both 0.005 m.