CN111265955A - Portable fire smoke abatement device - Google Patents
Portable fire smoke abatement device Download PDFInfo
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- CN111265955A CN111265955A CN202010209653.6A CN202010209653A CN111265955A CN 111265955 A CN111265955 A CN 111265955A CN 202010209653 A CN202010209653 A CN 202010209653A CN 111265955 A CN111265955 A CN 111265955A
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- Prior art keywords
- nozzle
- pipeline
- connecting rod
- portable fire
- fire smoke
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- 239000000779 smoke Substances 0.000 title claims abstract description 38
- 238000000889 atomisation Methods 0.000 claims abstract description 17
- 238000005054 agglomeration Methods 0.000 claims abstract description 9
- 230000002776 aggregation Effects 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 230000008030 elimination Effects 0.000 claims 2
- 238000003379 elimination reaction Methods 0.000 claims 2
- 239000002245 particle Substances 0.000 abstract description 9
- 239000010419 fine particle Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000443 aerosol Substances 0.000 description 2
- 230000004931 aggregating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 235000010493 xanthan gum Nutrition 0.000 description 2
- 229920001285 xanthan gum Polymers 0.000 description 2
- 239000000230 xanthan gum Substances 0.000 description 2
- 229940082509 xanthan gum Drugs 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 235000010418 carrageenan Nutrition 0.000 description 1
- 239000000679 carrageenan Substances 0.000 description 1
- 229920001525 carrageenan Polymers 0.000 description 1
- 229940113118 carrageenan Drugs 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D49/00—Separating dispersed particles from gases, air or vapours by other methods
- B01D49/006—Separating dispersed particles from gases, air or vapours by other methods by sonic or ultrasonic techniques
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a portable fire hazard smoke abatement device, and relates to a fire hazard smoke abatement device. Comprises a sound source system and an atomization system; the sound source system comprises a compressed air storage tank and a sound source device which are connected through a gas pipeline; the sound source device comprises a connecting pipeline, a horn cover, a nozzle, a central connecting rod and a resonance cavity, wherein the nozzle, the central connecting rod and the resonance cavity are arranged in the horn cover; the connecting pipeline is arranged at the central position of the horn cover; the nozzle is arranged at the second end of the connecting pipeline, and the opening of the nozzle faces the opening of the horn cover; the first end of the central connecting rod extends into the nozzle, and the middle part of the central connecting rod is provided with a convex part which forms a slit with the nozzle; the resonance cavity is arranged at the second end of the central connecting rod; the atomization system comprises an agglomeration agent water tank, a delivery pump and a nozzle which are sequentially connected through an atomization pipeline; and a branch pipe is connected between the nozzle and the gas transmission pipeline. The invention makes the smoke agglomerate into bigger particles to be settled, and quickly reduces the smoke concentration in the fire scene.
Description
Technical Field
The invention relates to a fire smoke abatement device, in particular to a portable fire smoke abatement device.
Background
Among various disasters, fire disasters occur most frequently and have extremely strong destructive power. According to the statistical data of fire, the smoke generated by the fire is the main cause of death of people in the building fire, the proportion of the people dying from smoking on the fire scene is larger and can reach as high as 80%, and most of the people dying from burning by fire inhale excessive smoke to cause poisoning and collapse and then burn by fire. Therefore, the most rapid and effective smoke discharge is adopted in the fire scene, and the relatively long escape time can be maintained in the fire scene, which is a necessary condition for reducing the death rate of the fire. Currently, the smoke discharge at the fire scene is generally performed by pre-installed devices, such as an automatic smoke discharge device for fire in a large space building disclosed in chinese patent application ZL201410338940.1 and an automatic smoke discharge skylight disclosed in chinese patent application ZL03203096.7, which can play a role of rapidly discharging smoke at the fire scene, but the devices cannot be quickly installed at the fire scene, and obviously cannot play a role for buildings without the pre-installed devices. Therefore, how to effectively control smoke in case of fire is of great importance to reduce casualties and property loss.
Disclosure of Invention
The invention aims to provide a portable fire smoke abatement device, which enables smoke to be agglomerated into larger particles to be settled, and rapidly reduces the smoke concentration of a fire scene.
In order to achieve the purpose, the invention provides the following technical scheme:
a portable fire smoke abatement device is characterized by comprising a sound source system and an atomization system; the sound source system comprises a compressed air storage tank and a sound source device which are connected through a gas pipeline; the sound source device comprises a connecting pipeline, a horn cover, a nozzle, a central connecting rod and a resonance cavity, wherein the nozzle, the central connecting rod and the resonance cavity are arranged in the horn cover; the connecting pipeline is arranged in the center of the horn cover, the first end of the connecting pipeline is positioned outside the horn cover, and the second end of the connecting pipeline is positioned in the horn cover; the nozzle is arranged at the second end of the connecting pipeline, and an opening of the nozzle faces the opening of the horn cover; the first end of the central connecting rod extends into the nozzle, and the middle part of the central connecting rod is provided with a convex part which forms a slit with the nozzle; the resonance cavity is arranged at the second end of the central connecting rod; the atomization system comprises an agglomeration agent water tank, a delivery pump and a nozzle which are sequentially connected through an atomization pipeline; and a branch pipe is connected between the nozzle and the gas transmission pipeline.
Furthermore, the first end of the central connecting rod is provided with a mounting table, and a plurality of through air holes are formed in the mounting table.
Further, the nozzle is connected with the mounting table through threads, and comprises internal threads of the nozzle and external threads on the peripheral side of the mounting table.
Furthermore, the upper surface of convex part is provided with the first inclined plane that encircles central connecting rod, the inner wall of nozzle is provided with the second inclined plane, first inclined plane, second inclined plane are the same angle with the horizontal direction respectively.
Further, the same angle is 30 ° to 60 °.
Further, an extension portion facing the resonance chamber is provided on the opening side of the nozzle.
Furthermore, the resonance cavity is a cylinder body with an opening facing one side of the nozzle, and the bottom of the cylinder body is in threaded connection with the second end of the central connecting rod.
Furthermore, the second end of the central connecting rod is provided with an infrared distance measuring sensor, a sound pressure sensor and a sound frequency measuring sensor.
Further, the gas transmission pipeline and the atomization pipeline are respectively provided with a switch valve.
Further, a handle is arranged on the compressed air storage tank.
Compared with the prior art, the invention has the beneficial effects that: the invention utilizes the high-strength sound wave emitted by the sound source device to process the fine particles (aerosol) in the air, so that the particles are relatively displaced, the movement rate of the fine particles is accelerated, and the fine particles collide and are agglomerated into larger particles to be settled, thereby reducing the smoke concentration of a fire scene, improving the visibility, and facilitating trapped people to quickly escape from the fire scene. Meanwhile, the ultra-strong sound emitted by the device can provide sound guide for people around falling into the direction that the smoke is not clear. When only sound waves are adopted, 40% -50% of fire smoke particles can be reduced; when the water spray is coupled with the sound field, the agglomeration effect can be further improved, and more than 80% -90% of particles can be reduced, so that the visibility is greatly improved.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
FIG. 2 is a cross-sectional view of one embodiment of the present invention.
Fig. 3 is a sectional view of a sound source device according to an embodiment of the present invention.
FIG. 4 is a partial view of a nozzle and center link connection according to one embodiment of the present invention.
Fig. 5 is a schematic view of a central link structure according to an embodiment of the invention.
In the figure: 10. a gas pipeline; 101. an on-off valve; 20. a compressed air storage tank; 30. a sound source device; 40. an atomization conduit; 401. an on-off valve; 402. a pressure regulating valve; 50. an agglomeration agent water tank; 60. a delivery pump; 70. a nozzle; 80. a branch pipe; 801. a pressure regulating valve; 1. connecting a pipeline; 2. a horn cover; 21. a nut; 3. a nozzle; 31. a second inclined plane; 32. an extension portion; 4. a central link; 41. a convex portion; 411. a first inclined plane; 42. an installation table; 421. a vent hole; 5. a resonance chamber; 81. an infrared ranging sensor; 82. a sound pressure sensor; 83. a sound frequency measurement sensor; 9. a slit.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 and 2, the present invention provides a portable fire smoke abatement device, which comprises a sound source system and an atomization system.
The sound source system comprises a compressed air storage tank 20 and a sound source device 30 which are connected through a gas transmission pipeline 10, and a switch valve 101 is arranged on the gas transmission pipeline 10. The compressed air storage tank 20 stores compressed air, and in case of fire, the switching valve 101 of the device is opened in case of emergency where smoke is relatively rich, thereby providing a sound source to the sound source device 30. The sound source device emits high-strength sound waves with the frequency of 0-10kHz and the sound pressure level of 150 decibels, and the high-strength sound waves process fine particles (aerosol) in air, so that the particles are subjected to relative displacement, the movement rate of the fine particles is accelerated, and the fine particles collide and are agglomerated into larger particles to be settled; when only the sound wave is adopted, 40-50% of fire smoke particles can be reduced, and therefore the smoke concentration of a fire scene is reduced. The compressed air storage tank 20 is provided with a handle 201, which is convenient for a user to hold; meanwhile, the compressed air storage tank 20 is also provided with a pressure gauge 202 for detecting the internal pressure of the storage tank in real time.
In particular, in order to achieve the generation of such high intensity sound waves. Referring to fig. 3, the sound source device 30 includes a connecting pipe 1, a horn housing 2, a nozzle 3 installed in the horn housing 2, a center link 4, and a resonance chamber 5. Connecting tube 1 sets up in the central point of loudspeaker cover 2 and puts, and connecting tube 1's first end is located loudspeaker cover 2 and links to each other with the air compressor machine outward, and is leading-in with external compressed air, and connecting tube 1's second end is located loudspeaker cover 2. Specifically, the connecting pipe 1 is provided with an external thread, the center of the horn cover 2 is provided with a nut 21, and during installation, the nut 21 is screwed on the connecting pipe 1 to complete installation of the horn cover 2.
The nozzle 3 is installed at the second end of the connecting pipeline 1, the two are communicated, and the opening of the nozzle 3 is arranged towards the opening of the horn cover 2 and used for spraying out the compressed air flow.
Referring to fig. 3 and 4, a first end of the central link 4 extends into the nozzle, a protrusion 41 is disposed in the middle of the central link 4, and the protrusion 41 and the nozzle 3 form a slit 9 with a width of 0.05-5 mm; the narrow slit 9 is annular, so that the total pressure distribution of the airflow at the outlet of the nozzle 3 can be changed, and the total pressure near the axis of the central connecting rod 4 is effectively reduced, thereby being more beneficial to the discharge of the gas in the pipe in the outflow stage.
The resonance cavity 5 is a cylinder with one closed end and the other open end and is used for generating high-frequency vibration in a gas flow field, and the resonance cavity 5 is arranged at the second end of the central connecting rod 4. The opening side of the resonance chamber 5 faces the nozzle 3. By varying the spacing between the nozzle 3 and the resonance chamber 4, the acoustic frequency of the acoustic agglomeration apparatus can be varied. Experimental data show that the frequency generally decreases as the pitch is increased. In order to meet the requirements on frequency in different scenes, the bottom of the resonance cavity 5 is in threaded connection with the second end of the central connecting rod 4, and the distance between the nozzle 3 and the resonance cavity 4 can be adjusted by rotating the resonance cavity 5.
Referring to fig. 4 and 5, in order to fix the center link 4, a mounting table 42 is disposed at a first end of the center link 4, and a plurality of ventilation holes 421 penetrating up and down are formed in the mounting table 42. The vent holes 421 are fan-shaped and evenly distributed on the mounting table 42, so that compressed air enters the slits 9 below through the vent holes 421; the nozzle 3 is connected with the mounting table 42 through threads, and comprises an internal thread of the nozzle 3 and an external thread on the peripheral side of the mounting table 4.
The width of the slit 9 directly affects the pressure distribution at the outlet of the nozzle 3 in order to achieve adjustability of the slit 9. The upper surface of the convex part 41 is provided with a first inclined surface 411 surrounding the central connecting rod 4, the inner wall of the nozzle 3 is provided with a second inclined surface 31, and the first inclined surface 411 and the second inclined surface 31 respectively form the same angle of 30-60 degrees, preferably 60 degrees with the horizontal direction; a slit 9 is formed between the first inclined surface 411 and the second inclined surface 31. The height adjustment of the center link 4 can be realized by rotating the center link 4, so that the approaching or separating between the first inclined surface 411 and the second inclined surface 31 is adjusted, and the width of the slit 9 is adjusted.
In order to guide the air flow, an extension 32 facing the resonance chamber is provided on the opening side of the nozzle 3 to guide the high-speed air flow emitted from the slit 9 and to intensively inject the high-speed air flow into the resonance chamber 5.
In the present embodiment, in order to detect the state of the air flow in real time, the present embodiment is provided with a detection system, specifically, the second end of the center link 4 is provided with an infrared distance measuring sensor 81, a sound pressure sensor 82, and a sound frequency measuring sensor 83, which are respectively used for detecting the distance between the nozzle 3 and the resonance cavity 4 and the sound pressure and frequency at the outlet of the horn cover, so as to implement real-time feedback of information.
In order to make those skilled in the art better understand the technical solution of the sound source device, the following detailed description is made in conjunction with the specific principles of the present embodiment.
The open end of the resonance cavity 5 is opposite to the direction of the air flow and is placed in a high-speed air flow, high-frequency vibration is generated in the air flow and is transmitted outwards, and high-strength sound waves (more than 150 decibels) with high sound pressure level are generated through the guiding and sound amplification of the horn cover 2.
The compressed air enters the nozzle 3 through the connecting pipe 1 and then forms a supersonic airflow after passing through a narrow gap 9 between the nozzle 3 and the central link 4. When the air flow passes through the resonance chamber 5, the air flow can be divided into an inflow phase and an outflow phase.
During the inflow phase, the air flow generates a series of compression waves which propagate into the resonance cavity 5, and the compression waves are rebounded out from the bottom of the resonance cavity 5 and propagate towards the pipe orifice.
The rebound compression wave (or shock wave) generates an expansion wave when reaching the orifice of the resonance chamber 5, and at this time, the air pressure at the orifice of the resonance chamber 5 is high due to the low air pressure in the resonance chamber 5, and the expansion wave propagates into the resonance chamber. This is accompanied by a transition from the inflow phase to the outflow phase.
The propagation of the expansion waves to the resonance cavity 5 improves the pressure of the air flow in the resonance cavity 5, and the pressure of the air flow at the pipe orifice of the resonance cavity 5 is reduced, so that the interface between the air flow jetted by the nozzle 3 and the air flow in the resonance cavity slowly moves towards the pipe orifice of the resonance cavity 5, and the air flow flows out in the process.
When the expansion wave rebounds at the bottom of the resonance cavity pipe 5 and reaches the pipe orifice, the pressure of the gas in the resonance cavity pipe 5 is weakened, the pipe orifice pressure of the resonance cavity pipe 5 is high, the airflow moves into the resonance cavity pipe 5 again, the outflow stage is finished, the inflow stage is started, and a cycle process is finished.
The high-speed airflow repeatedly enters and exits the resonance cavity to generate pressure fluctuation, and the pressure fluctuation generates high-strength sound waves (more than 150 decibels) with high sound pressure level through the guiding and sound amplifying effects of the horn cover 2, namely sound.
With continued reference to fig. 1 and 2, to further enhance the smoke abatement effect, the atomization system includes an agglomeration agent water tank 50, a delivery pump 60, and a nozzle 70, which are connected in series via an atomization conduit 40. A branch pipe 80 is connected between the nozzle 70 and the gas transmission pipeline 10. An aggregating agent, specifically one or a combination of polyferric sulfate (PFS), carrageenan (KC), Polyacrylamide (PAM) and xanthan gum (XTG), is stored in the aggregating agent water tank 50. When the on-off valve 401 arranged on the atomizing pipeline 40 is opened, the agglomeration agent is conveyed to the nozzle 70 and is atomized by the compressed air sprayed from the branch pipe 80 and then sprayed out, so that the agglomeration effect of the device is greatly enhanced. Preferably, the atomization pipeline 40 is provided with a pressure regulating valve 402, and the branch pipe 80 is provided with a pressure regulating valve 801, so as to regulate the pressure balance between the two pipelines.
Under the dual action of the sound source system and the atomization system, more than 80% -90% of particulate matters can be reduced, and therefore the visibility is greatly improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A portable fire smoke abatement device is characterized by comprising a sound source system and an atomization system; the sound source system comprises a compressed air storage tank and a sound source device which are connected through a gas pipeline; the sound source device comprises a connecting pipeline, a horn cover, a nozzle, a central connecting rod and a resonance cavity, wherein the nozzle, the central connecting rod and the resonance cavity are arranged in the horn cover; the connecting pipeline is arranged in the center of the horn cover, the first end of the connecting pipeline is positioned outside the horn cover, and the second end of the connecting pipeline is positioned in the horn cover; the nozzle is arranged at the second end of the connecting pipeline, and an opening of the nozzle faces the opening of the horn cover; the first end of the central connecting rod extends into the nozzle, and the middle part of the central connecting rod is provided with a convex part which forms a slit with the nozzle; the resonance cavity is arranged at the second end of the central connecting rod; the atomization system comprises an agglomeration agent water tank, a delivery pump and a nozzle which are sequentially connected through an atomization pipeline; and a branch pipe is connected between the nozzle and the gas transmission pipeline.
2. The portable fire smoke abatement device of claim 1, wherein the first end of the central link is provided with a mounting platform, and the mounting platform is provided with a plurality of vent holes which penetrate up and down.
3. The portable fire smoke abatement apparatus of claim 2, wherein the nozzle is threadedly coupled to the mounting table, comprising an internal thread of the nozzle and an external thread on a peripheral side of the mounting table.
4. The portable fire smoke abatement apparatus of claim 1, wherein the upper surface of the protrusion is provided with a first inclined surface surrounding the central link, the inner wall of the nozzle is provided with a second inclined surface, and the first inclined surface and the second inclined surface respectively form the same angle with the horizontal direction.
5. The portable fire smoke elimination device of claim 4, wherein the same angle is 30 ° to 60 °.
6. The portable fire smoke elimination device of claim 1, wherein the open side of the nozzle is provided with an extension toward the resonance chamber.
7. The portable fire smoke abatement device of claim 1, wherein the resonance chamber is a cylinder body open to one side of the nozzle, and a bottom of the cylinder body is threadedly coupled to the second end of the central rod.
8. The portable fire smoke abatement device of claim 1, wherein the second end of the center link is provided with an infrared ranging sensor, a sound pressure sensor, a sound frequency measurement sensor.
9. The portable fire smoke abatement apparatus of claim 1, wherein the gas transmission pipe and the atomization pipe are respectively provided with a switch valve.
10. The portable fire smoke abatement apparatus of claim 1, wherein a handle is provided on the compressed air storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010209653.6A CN111265955A (en) | 2020-03-23 | 2020-03-23 | Portable fire smoke abatement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010209653.6A CN111265955A (en) | 2020-03-23 | 2020-03-23 | Portable fire smoke abatement device |
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| Publication Number | Publication Date |
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| CN111265955A true CN111265955A (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010209653.6A Pending CN111265955A (en) | 2020-03-23 | 2020-03-23 | Portable fire smoke abatement device |
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| CN (1) | CN111265955A (en) |
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2020
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