CN102327687A - Dry powder extinguishing system and method based on wind-speed adjustment - Google Patents
Dry powder extinguishing system and method based on wind-speed adjustment Download PDFInfo
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- CN102327687A CN102327687A CN201110210948A CN201110210948A CN102327687A CN 102327687 A CN102327687 A CN 102327687A CN 201110210948 A CN201110210948 A CN 201110210948A CN 201110210948 A CN201110210948 A CN 201110210948A CN 102327687 A CN102327687 A CN 102327687A
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Abstract
The invention belongs to the field of fire fighting equipment and in particular relates to a dry powder extinguishing system and method based on wind-speed adjustment, and the method and system provided by the invention can being used for evading strong wind for extinguishment and adjust injection pressure according to the wind speed. In the invention, the dry powder deposited in a spray mixing tank is loosened and mixed with gas so as to ensure an appropriate gas-powder ratio of the gas to the ejected dry powder of a fire extinguishing agent, thus improving the extinguishing effect of the dry powder extinguishing system.
Description
Technical field
The invention belongs to the fire-fighting equipment field, particularly a kind ofly can evade high wind, regulate the wind speed of expulsion pressure according to wind speed and regulate fire extinguishing system and extinguishing method.
Background technology
Common main equipment fire extinguishing system mainly contains froth fire extinguishing system, smoke extinguishing system, powder extinguishing system.Froth fire extinguishing system is to mix the generation foam to water and foam mixing liquid, puts out a fire with the foam that produces, and its fire-fighting efficiency is low; There is certain corrosivity in equipment, is not suitable for power equipment and uses, have the limitation of using; Smoke extinguishing system is that the smog that utilizes burning to produce is put out a fire; Itself just have the high defective of temperature, suitable occasion is less, and powder extinguishing system has extinguishing property preferably with respect to preceding two kinds of fire extinguishing systems.
But also there is defective in powder extinguishing system: because dry powder belongs to particle, after it sprayed from nozzle, its movement locus received extraneous windage; Off-track can't reach the burning things which may cause a fire disaster surface and put out a fire, traditional powder extinguishing system easily; After receiving fire signal; Directly device for opening is put out a fire, and neither one is to a judgement of surrounding environment, and its fire extinguishing effect usually is short of to some extent; In addition; After powder extinguishing system was placed for a long time, because the effect of gravity, dry powder can deposit in mist mixes jar; If power gas source directly mixes a jar air feed to mist; Dry powder is mixed when jar discharging from mist, the many powder of the gas that gushing out appears in regular meeting less or the few situation of the many gas of powder, the fire extinguishing effect of powder extinguishing system receives very big influence.
Summary of the invention
The present invention is directed to the deficiency of prior art; Designed and a kind ofly can evade the wind speed that high wind puts out a fire and regulate powder extinguishing system and extinguishing method thereof; Still realized simultaneously becoming flexible to being deposited on mixed jar of interior dry powder of mist; And it is fully mixed with gas, the dry powder and the gas of the extinguishing chemical that has guaranteed to eject are in a suitable gas-powder ratio, have improved the fire extinguishing effect of powder extinguishing system.
The present invention realizes through following technical scheme:
Wind speed is regulated powder extinguishing system, it is characterized in that:
Comprise being arranged on powder extinguishing system protection zone air velocity transducer on every side, the wind speed that air velocity transducer detects around the protection zone also is converted into the signal of telecommunication;
Be provided with the fire source probing device around in the powder extinguishing system protection zone;
Controller, this controller are used to receive the signal of telecommunication of air velocity transducer and the signal of fire source probing device, and send control command after judging according to signal;
And be that mist mixes the dry powder power assembly that jar provides power gas; The dry powder power assembly mixes jar with mist and is connected, and the connecting line that dry powder power assembly and mist mix jar is provided with charge valve, and charge valve is connected with controller; Charge valve is according to the commands for controlling dry powder power assembly of controller charged pressure gas in mist mixes jar whether; The exit that mist mixes jar is provided with mixed jar of motor-driven valve of opening of control mist, and the output of motor-driven valve is connected with the dry powder pipe network, and the dry powder pipe network is provided with several nozzles.
Described mist mixes jar and also to be provided with the pressure sensor that the jar internal pressure is detected, and described pressure sensor is connected with controller, and converts detected pressure into the signal of telecommunication and feed back to controller.
Said mist mixes jar and comprises that mist mixes tank body; Top and bottom that mist mixes tank body are respectively arranged with air inlet and following air inlet, and the set inside of mixing tank body at mist has the atomising device that makes the dry powder atomizing, and atomising device is connected with the following air inlet that mist mixes tank base; Atomising device is made up of first atomizer and/or second atomizer; The port of export of a material efferent duct passes from the sidewall that mist mixes tank body, and the entrance point of material efferent duct is positioned at mist and mixes tank body, and the entrance point of material efferent duct is horn-like.
Described first atomizer is tubulose ringwise; The lateral wall of first atomizer is provided with several first orifices; The radial parallel of described first orifice and first atomizer also is provided with second orifice of several inclinations on the described first atomizer madial wall.
The angle of the axial and horizontal direction of described second orifice is between 15 °～80 °.
Described second atomizer is mushroom; Described second atomizer is made up of stay pipe and the mushroom cap top that is arranged on the stay pipe; The lower surface on described mushroom cap top is provided with a plurality of ventholes, and second venthole under described venthole is tilted to by first venthole of axis and horizontal direction parallel and axis is formed.
Wind speed is regulated dry chemical extinguishing method, and its step is following:
1, the fire source probing device is surveyed the protection zone, when detecting fire, sends fire signal to controller;
2, air velocity transducer detects protection zone wind speed on every side, and it is fed back to controller;
3, controller calculates the signal of air velocity transducer feedback, judges the maximum wind velocity that this moment, whether wind speed can bear greater than powder extinguishing system;
4, when the air speed value of this moment during greater than maximum wind speed setting, return step 2, when air speed value was set the wind-force value less than maximum, air velocity transducer detected the air speed value in a period of time, and feeds back to controller;
5, controlling value is calculated, and confirms that the wind speed around the protection zone is rising or descends, and when detecting the wind speed rising, returns step 2, and when wind speed decreased, controller drives power assembly and mixes inflation in the jar to mist;
6, mist mixes the pressure in the mixed jar of pressure sensor detection mist on the jar, and when pressure reached setting value, Open valve was put out a fire.
The present invention has the following advantages:
1, can evade high wind puts out a fire; When wind sensor detected protection zone wind speed on every side greater than wind speed setting, powder extinguishing system can stop to spray, and simultaneously wind speed is carried out real-time detection; When detecting wind speed less than wind speed setting; And when wind speed was in downward trend, powder extinguishing system was put out a fire, and had overcome the influence of ambient wind velocity to the dry powder that ejects; Guaranteed that the dry powder that ejects can arrive the burning things which may cause a fire disaster surface and put out a fire, improved the extinguishing property of dry powder system.
2, can carry out a loosening and atomizing to the dry powder that is deposited on the mixed jar of jar end of mist; Because long storage time, the dry powder during mist mixes jar can be in the effect deposit of gravity at the bottom of jar, if directly carry out the charge injection fire extinguishing; It is inhomogeneous to exist dry powder and gas to mix; The problem of fire extinguishing weak effect, the present invention becomes flexible what the dry powder that is deposited on tank body carried out through the atomising device that is provided with in advance, the dry powder that deposits is broken up be reduced into graininess; And in tank body, carry out one and mix fully, make dry powder and gas in the tank body reach a mixing ratio that is fit to fire extinguishing.
Description of drawings
Fig. 1 is that system of the present invention connects sketch map;
Fig. 2 is the structural representation that mist of the present invention mixes jar;
Fig. 3 is the structural representation of first atomizer;
Fig. 4 be the first atomizer A-A to cutaway view;
Fig. 5 is the structural representation of second atomizer;
Fig. 6 is the flow chart of extinguishing method of the present invention;
1 is air velocity transducer among the figure, and 2 is controller, and 3 is the dry powder power assembly, and 4 is charge valve, and 5 for mist mixes jar, and 6 is the fire source probing device; 7 is nozzle, and 8 is motor-driven valve, and 50 is that mist mixes tank body, and 51 is pressure sensor, and 52 is last air inlet, and 53 are following air inlet; 54 is atomising device, and 55 is first atomizer, and 56 is second atomizer, and 57 is the material efferent duct, and 551 is first orifice; 552 is second orifice, and 561 is stay pipe, and 562 are the mushroom cap top, and 563 is first venthole, and 564 is second venthole.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified:
Wind speed as shown in Figure 1 is regulated powder extinguishing system, comprises being arranged on powder extinguishing system protection zone air velocity transducer 1 on every side, and the wind speed around the air velocity transducer 1 detection protection zone also is converted into the signal of telecommunication; Be provided with fire source probing device 6 around in the powder extinguishing system protection zone, whether fire source probing device 6 is used for detection of fires takes place; Controller 2, this controller 2 are used to receive the signal of telecommunication of air velocity transducer 1 and the signal of fire source probing device 6, and send control command after judging according to signal; And be the dry powder power assembly 3 that the mixed jar 5 of mist provides power gas; Dry powder power assembly 3 mixes jar 5 with mist and is connected; Dry powder power assembly 3 is provided with charge valve 4 with the connecting line that mist mixes jar 5; Charge valve 4 is connected with controller 2, and whether charge valve 4 mixes charged pressure gas in jars 5 to mist according to the commands for controlling dry powder power assembly of controller, and mist mixes jars 5 exit and is provided with the control mist and mixes jar motor-driven valve 8 of 5 unlatchings; The output of motor-driven valve 8 is connected with the dry powder pipe network, and the dry powder pipe network is provided with several nozzles 7.
In the fire extinguishing procedure of reality, wind-force is in case greater than six grades, and the dry-powder air-current that dry-chemical fire extinguishing equipment ejects is difficult to arrive the surface of burning things which may cause a fire disaster; So dry-chemical fire extinguishing equipment does not have the fire extinguishing effect in the high wind environment at all, so the present invention detects powder extinguishing system protection zone wind speed on every side through the air velocity transducer that is provided with, when wind speed during greater than wind speed setting; Powder extinguishing system quits work, and this moment, air velocity transducer continue to detect wind speed, when wind speed during less than setting value; Powder extinguishing system starts; Put out a fire, avoid the influence of high wind, guaranteed the effect of fire extinguishing powder extinguishing system.
Described mist mixes on the jar 5 and also is provided with the pressure sensor 51 that the jar internal pressure is detected; Described pressure sensor is connected with controller; And convert detected pressure into the signal of telecommunication and feed back to controller; Be set with the pairing tank body pressure of wind-force at different levels in the controller; Air velocity transducer sends controller with detected to less than the maximum wind power value of setting wind-force, and the expulsion pressure during controller mixes jar with the pairing tank body pressure control of this wind-force value mist, the pressure sensor of setting are used for detecting the expulsion pressure whether pressure that mist mixes jar reaches setting.
Mist as shown in Figure 2 mixes jar and comprises that mist mixes tank body 50, and top and bottom that mist mixes tank body 50 are respectively arranged with air inlet 52 and following air inlet 53, and the set inside of mixing tank body 50 at mist has the atomising device 54 that makes the dry powder atomizing; Atomising device 54 is connected with the following air inlet 53 that mist mixes tank base, and atomising device 54 is made up of first atomizer 55 and/or second atomizer 56, and the port of export of a material efferent duct 57 passes from the sidewall that mist mixes tank body; The entrance point of material efferent duct 57 is positioned at mist and mixes tank body 50, and the entrance point of material efferent duct 57 is horn-like, and powder extinguishing system possibly be in holding state for a long time; The dry powder that this moment, mist mixed in the jar mixes pot bottom in the effect deposit of gravity at mist; Formation bulk or pie dry powder carry out ejecting extinguishing if powder extinguishing system directly mixes to inflate in the jar to mist, and there is the few possibility of the many powder of gas in the dry-powder air-current that comes out from nozzle like this; The fire extinguishing weak effect; When tank body was inflated, the atomising device of setting can carry out one to the dry powder that is deposited on tank body in advance and break up in advance, and dry powder is reduced into graininess; And carry out the mixing of dry powder and gas simultaneously; Form gas and dry powder than suitable extinguishing chemical, the fire extinguishing effect of the extinguishing chemical that has guaranteed to eject has improved the utilization rate of dry powder.
Describe below in conjunction with the structure of accompanying drawing 3 to Fig. 5 first atomizer and second atomizer:
Described first atomizer 55 is tubulose ringwise; The lateral wall of first atomizer 55 is provided with several first orifices 551; The radial parallel of described first orifice 551 and first atomizer 55 also is provided with second orifice 552 of several inclinations on described first atomizer, 55 madial walls.
The angle of the axial and horizontal direction of described second orifice 552 is between 15 °～80 °.
Described second atomizer 56 is mushroom; Described second atomizer is made up of stay pipe 561 and the mushroom cap top 562 that is arranged on the stay pipe 561; The lower surface on described mushroom cap top 562 is provided with a plurality of ventholes, and second venthole 564 under described venthole is tilted to by first venthole 563 of axis and horizontal direction parallel and axis is formed.
First atomizer that is provided with and second atomizer are through being provided with the hole of different directions; The gases at high pressure that at first from the hole, eject can carry out one to the dry powder of deposition and break up, and the dry powder that forms block or pie are broken up be reduced into graininess; Secondly; The air-flow of different directions forms a swirling eddy in tank body, impel dry powder and gas to carry out a mixing, forms the powder extinguishing agent that gas-powder ratio is suitable.
Wind speed is regulated dry chemical extinguishing method, and its step is following:
1) the fire source probing device is surveyed the protection zone, when detecting fire, sends fire signal to controller;
2) air velocity transducer detects protection zone wind speed on every side, and it is fed back to controller;
3) controller calculates the signal of air velocity transducer feedback, judges the maximum wind velocity that this moment, whether wind speed can bear greater than powder extinguishing system;
4) when the air speed value of this moment during greater than maximum wind speed setting, return step 2, when air speed value was set the wind-force value less than maximum, air velocity transducer detected the wind speed in a period of time, and feeds back to controller;
5) controlling value is calculated, and confirms that the wind speed around the protection zone is rising or descends, and when detecting the wind speed rising, returns step 2, and when wind speed decreased, controller drives power assembly and mixes inflation in the jar to mist;
6) mist mixes the pressure in the mixed jar of pressure sensor detection mist on the jar, and when pressure reached setting value, Open valve was put out a fire.
The present invention has the following advantages:
1, can evade high wind and put out a fire, when this wind sensor detects protection zone wind speed on every side greater than wind speed setting, can suspend ejecting extinguishing; And simultaneously wind speed is carried out real-time detection, when detecting wind speed less than wind speed setting, and wind speed is when being in downward trend; Powder extinguishing system is put out a fire; Overcome the influence of wind speed, guaranteed that the dry powder that ejects can arrive the burning things which may cause a fire disaster surface and put out a fire, improved the extinguishing property of dry powder system the dry powder that ejects.
2, can carry out a loosening and atomizing to the dry powder that is deposited on the mixed jar of jar end of mist; Because long storage time, the dry powder during mist mixes jar can be in the effect deposit of gravity at the bottom of jar, if directly carry out the charge injection fire extinguishing; It is inhomogeneous to exist dry powder and gas to mix; The problem of fire extinguishing weak effect, the present invention becomes flexible what the dry powder that is deposited on tank body carried out through the atomising device that is provided with in advance, the dry powder that deposits is broken up be reduced into graininess; And in tank body, mix fully, make interior dry powder of tank body and gas reach a mixing ratio that is fit to fire extinguishing.
Claims (7)
1. wind speed is regulated powder extinguishing system, it is characterized in that:
Comprise being arranged on powder extinguishing system protection zone air velocity transducer on every side, the wind speed that air velocity transducer detects around the protection zone also is converted into the signal of telecommunication;
And be provided with the fire source probing device around in the powder extinguishing system protection zone;
Controller, this controller are used to receive the signal of telecommunication of air velocity transducer and the signal of fire source probing device, and send control command after judging according to signal;
And be that mist mixes the dry powder power assembly that jar provides power gas; The dry powder power assembly mixes jar with mist and is connected, and the connecting line that dry powder power assembly and mist mix jar is provided with charge valve, and charge valve is connected with controller; Charge valve is according to the commands for controlling dry powder power assembly of controller charged pressure gas in mist mixes jar whether; The exit that mist mixes jar is provided with mixed jar of motor-driven valve of opening of control mist, and the output of motor-driven valve is connected with the dry powder pipe network, and the dry powder pipe network is provided with several nozzles.
2. wind speed according to claim 1 is regulated powder extinguishing system; It is characterized in that: described mist mixes on the jar and also is provided with the pressure sensor that the jar internal pressure is detected; Described pressure sensor is connected with controller, and converts detected pressure into the signal of telecommunication and feed back to controller.
3. to go 1 described wind speed to regulate powder extinguishing system according to right; It is characterized in that: said mist mixes jar and comprises that mist mixes tank body; Top and bottom that mist mixes tank body are respectively arranged with air inlet and following air inlet, and the set inside of mixing tank body at mist has the atomising device that makes the dry powder atomizing, and atomising device is connected with the following air inlet that mist mixes tank base; Atomising device is made up of first atomizer and/or second atomizer; The port of export of a material efferent duct passes from the sidewall that mist mixes tank body, and the entrance point of material efferent duct is positioned at mist and mixes tank body, and the entrance point of material efferent duct is horn-like.
4. wind speed according to claim 3 is regulated powder extinguishing system; It is characterized in that: described first atomizer is tubulose ringwise; The lateral wall of first atomizer is provided with several first orifices; The radial parallel of described first orifice and first atomizer also is provided with second orifice of several inclinations on the described first atomizer madial wall.
5. wind speed according to claim 4 is regulated powder extinguishing system, it is characterized in that: the angle of the axial and horizontal direction of described second orifice is between 15 °～80 °.
6. wind speed according to claim 3 is regulated powder extinguishing system; It is characterized in that: described second atomizer is mushroom; Described second atomizer is made up of stay pipe and the mushroom cap top that is arranged on the stay pipe; The lower surface on described mushroom cap top is provided with a plurality of ventholes, and second venthole under described venthole is tilted to by first venthole of axis and horizontal direction parallel and axis is formed.
7. wind speed is regulated dry chemical extinguishing method, and its step is following:
1) the fire source probing device is surveyed the protection zone, when detecting fire, sends fire signal to controller;
2) air velocity transducer detects protection zone wind speed on every side, and it is fed back to controller;
3) controller calculates the signal of air velocity transducer feedback, judges the maximum wind velocity that this moment, whether wind speed can bear greater than powder extinguishing system;
4) when the air speed value of this moment during greater than maximum wind speed setting, return step 2, when air speed value was set the wind-force value less than maximum, air velocity transducer detected the air speed value in a period of time, and feeds back to controller;
5) controlling value is calculated, and confirms that the wind speed around the protection zone is rising or descends, and when detecting the wind speed rising, returns step 2, and when wind speed decreased, controller drives power assembly and mixes inflation in the jar to mist;
6) mist mixes the pressure in the mixed jar of pressure sensor detection mist on the jar, and when pressure reached setting value, Open valve was put out a fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110210948 CN102327687B (en) | 2011-07-27 | 2011-07-27 | Dry powder extinguishing system and method based on wind-speed adjustment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110210948 CN102327687B (en) | 2011-07-27 | 2011-07-27 | Dry powder extinguishing system and method based on wind-speed adjustment |
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| CN102327687A true CN102327687A (en) | 2012-01-25 |
| CN102327687B CN102327687B (en) | 2013-04-10 |
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| CN 201110210948 Active CN102327687B (en) | 2011-07-27 | 2011-07-27 | Dry powder extinguishing system and method based on wind-speed adjustment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537037A (en) * | 2012-07-17 | 2014-01-29 | 全龙浩 | Multi-point control passive automatic start-stop fire fighting system |
| CN105457195A (en) * | 2016-02-01 | 2016-04-06 | 赵明洁 | Power transformer fire extinguishing system and control method |
| CN107715343A (en) * | 2017-10-30 | 2018-02-23 | 扬中市南方矿用电器有限公司 | A kind of explosion suppression device of tape jam self-diagnostic function |
| CN111310347A (en) * | 2020-02-25 | 2020-06-19 | 深圳市瑞立视多媒体科技有限公司 | Method, device and equipment for loosening dry powder of simulated fire extinguisher and storage medium |
| CN111569324A (en) * | 2020-05-20 | 2020-08-25 | 付国旺 | Fire protection alarm device for landscape |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757754A (en) * | 2009-12-28 | 2010-06-30 | 西安新竹防灾救生设备有限公司 | Ultrafine dry powder cold gas sol fire extinguishing device |
| CN202191623U (en) * | 2011-07-27 | 2012-04-18 | 江苏中瑞电保智能装备有限公司 | Powder extinguishing system with adjustment of wind speed |
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2011
- 2011-07-27 CN CN 201110210948 patent/CN102327687B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757754A (en) * | 2009-12-28 | 2010-06-30 | 西安新竹防灾救生设备有限公司 | Ultrafine dry powder cold gas sol fire extinguishing device |
| CN202191623U (en) * | 2011-07-27 | 2012-04-18 | 江苏中瑞电保智能装备有限公司 | Powder extinguishing system with adjustment of wind speed |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103537037A (en) * | 2012-07-17 | 2014-01-29 | 全龙浩 | Multi-point control passive automatic start-stop fire fighting system |
| CN105457195A (en) * | 2016-02-01 | 2016-04-06 | 赵明洁 | Power transformer fire extinguishing system and control method |
| CN107715343A (en) * | 2017-10-30 | 2018-02-23 | 扬中市南方矿用电器有限公司 | A kind of explosion suppression device of tape jam self-diagnostic function |
| CN111310347A (en) * | 2020-02-25 | 2020-06-19 | 深圳市瑞立视多媒体科技有限公司 | Method, device and equipment for loosening dry powder of simulated fire extinguisher and storage medium |
| CN111310347B (en) * | 2020-02-25 | 2022-05-31 | 深圳市瑞立视多媒体科技有限公司 | Method, device and equipment for loosening dry powder of simulated fire extinguisher and storage medium |
| CN111569324A (en) * | 2020-05-20 | 2020-08-25 | 付国旺 | Fire protection alarm device for landscape |
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| CN102327687B (en) | 2013-04-10 |
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