CN102327687B - 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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- CN102327687B CN102327687B CN 201110210948 CN201110210948A CN102327687B CN 102327687 B CN102327687 B CN 102327687B CN 201110210948 CN201110210948 CN 201110210948 CN 201110210948 A CN201110210948 A CN 201110210948A CN 102327687 B CN102327687 B CN 102327687B
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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 that water and foam mixing liquid are mixed the generation foam, put out a fire with the foam that produces, 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, applicable occasion is less, and powder extinguishing system has preferably extinguishing property with respect to front two kinds of fire extinguishing systems.
But also there is defective in powder extinguishing system: because dry powder belongs to particle, after it sprays from nozzle, its movement locus is subject to 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 the long-time placement of powder extinguishing system; because action of gravitation; dry powder can deposit in the mixed tank of mist; if power gas source is directly to the mixed tank air feed of mist; when dry powder is discharged from the mixed tank of mist, the situation that the many powder of the gas that often can occur gushing out are few or the many gas of powder are few, the fire extinguishing effect of powder extinguishing system is greatly affected.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, designed and a kind ofly can evade powder extinguishing system with adjustment of wind speed and the extinguishing method thereof that high wind is put out a fire, still realized simultaneously the dry powder that is deposited in the mixed tank of mist is become flexible, and itself and gas are fully mixed, the dry powder and the gas that have guaranteed the extinguishing chemical that ejects are in a suitable gas-powder ratio, have improved the fire extinguishing effect of powder extinguishing system.
The present invention is achieved through the following technical solutions:
Powder extinguishing system with adjustment of wind speed 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 be used for 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 the dry powder power assembly that power gas is provided for the mixed tank of mist, the dry powder power assembly is connected with the mixed tank of mist, connecting line at dry powder power assembly and the mixed tank of mist is provided with charge valve, charge valve is connected with controller, whether charge valve mixes charged pressure gas in the tank to mist according to the instruction control dry powder power assembly of controller, the exit of the mixed tank of mist is provided with the motor-driven valve that the mixed tank of control mist is opened, and the output of motor-driven valve is connected with the dry powder pipe network, is provided with several nozzles on the dry powder pipe network.
Also be provided with the pressure sensor that the tank internal pressure is detected on the mixed tank of described mist, described pressure sensor is connected with controller, and the pressure that detects is converted to the signal of telecommunication feeds back to controller.
The mixed tank of described mist comprises that mist mixes tank body, top and the bottom of the mixed tank body of mist are respectively arranged with enterprising gas port and lower air inlet, inside at the mixed tank body of mist is provided with the atomising device that makes the dry powder atomizing, atomising device is connected with the lower air inlet of the mixed tank base of mist, atomising device is made of the first atomizer and/or the second atomizer, the port of export of a material efferent duct passes from the sidewall of the mixed tank body of mist, and the entrance point of material efferent duct is positioned at the mixed tank body of mist, and the entrance point of material efferent duct is horn-like.
Described the first atomizer is tubulose ringwise, lateral wall at the first atomizer is provided with several the first orifices, the radial parallel of described the first orifice and the first atomizer also is provided with the second orifice of several inclinations on described the first atomizer madial wall.
The angle of the axial and horizontal direction of described the second orifice is between 15 °～80 °.
Described the second atomizer is mushroom, described the second atomizer is made 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 the second venthole under described venthole is tilted to by the first venthole of axis and horizontal direction parallel and axis forms.
Wind speed is regulated dry chemical extinguishing method, and its step is as follows:
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 determines that the wind speed around the protection zone is to rise or descend, and when detecting the wind speed rising, returns step 2, and when wind speed decreased, controller drives power assembly and inflates in the mixed tank of mist;
6, the pressure sensor on the mixed tank of mist detects the pressure in the mixed tank of mist, 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 detects 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 is in downward trend; powder extinguishing system is put out a fire; overcome ambient wind velocity to the impact of 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 powder system.
2, can carry out a loosening and atomizing to the dry powder that is deposited at the bottom of the mixed tank tank of mist, because long storage time, dry powder in the mixed tank of mist can be in the action of gravitation deposit at the bottom of tank, 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, pre-the becoming flexible that the present invention carries out the dry powder that is deposited on tank body by the atomising device that arranges, the dry powder of deposition is broken up and is 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 system of the present invention connection diagram;
Fig. 2 is the structural representation of the mixed tank of mist of the present invention;
Fig. 3 is the structural representation of the first atomizer;
Fig. 4 be the first atomizer A-A to cutaway view;
Fig. 5 is the structural representation of the 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, 5 are the mixed tank of mist, and 6 is the fire source probing device, and 7 is nozzle, and 8 is motor-driven valve, 50 are the mixed tank body of mist, and 51 is pressure sensor, and 52 is enterprising gas port, and 53 is lower air inlet, 54 is atomising device, and 55 is the first atomizer, and 56 is the second atomizer, and 57 is the material efferent duct, 551 is the first orifice, and 552 is the second orifice, and 561 is stay pipe, 562 are the mushroom cap top, and 563 is the first venthole, and 564 is the second venthole.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing:
Powder extinguishing system with adjustment of wind speed as shown in Figure 1 comprises being arranged on powder extinguishing system protection zone air velocity transducer 1 on every side that the wind speed that air velocity transducer 1 detects around the 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 occurs for detection of fire; Controller 2, this controller 2 is used for receiving the signal of telecommunication of air velocity transducer 1 and the signal of fire source probing device 6, and sends control command after judging according to signal; And the dry powder power assembly 3 that power gas is provided for the mixed tank 5 of mist, dry powder power assembly 3 is connected with the mixed tank 5 of mist, connecting line at dry powder power assembly 3 and the mixed tank 5 of mist is provided with charge valve 4, charge valve 4 is connected with controller 2, whether charge valve 4 mixes tank 5 interior charged pressure gases to mist according to the instruction control dry powder power assembly of controller, the exit of the mixed tank 5 of mist is provided with the motor-driven valve 8 that the mixed tank 5 of control mist is opened, the output of motor-driven valve 8 is connected with the dry powder pipe network, is provided with several nozzles 7 on the dry powder pipe network.
In the fire extinguishing procedure of reality; wind-force is in case greater than six grades; 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 by the air velocity transducer that arranges; when wind speed during greater than wind speed setting; powder extinguishing system quits work; this moment, air velocity transducer continued to detect wind speed; when wind speed less than when setting value, powder extinguishing system starts, and puts out a fire; avoid high wind on the impact of powder extinguishing system, guaranteed the effect of fire extinguishing.
Also be provided with the pressure sensor 51 that the tank internal pressure is detected on the mixed tank 5 of described mist, described pressure sensor is connected with controller, and the pressure that detects is converted to the signal of telecommunication feeds back to controller, be set with the corresponding tank body pressure of wind-force at different levels in the controller, the maximum wind power value less than setting wind-force that air velocity transducer will detect sends controller to, controller is with the expulsion pressure in the mixed tank of the corresponding tank body pressure control of this wind-force value mist, and whether the pressure sensor of setting reaches the expulsion pressure of setting for detection of the pressure in the mixed tank of mist.
The mixed tank of mist as shown in Figure 2 comprises that mist mixes tank body 50, top and the bottom of the mixed tank body 50 of mist are respectively arranged with enterprising gas port 52 and lower air inlet 53, inside at the mixed tank body 50 of mist is provided with the atomising device 54 that makes the dry powder atomizing, atomising device 54 is connected with the lower air inlet 53 of the mixed tank base of mist, atomising device 54 is made of the first atomizer 55 and/or the second atomizer 56, the port of export of a material efferent duct 57 passes from the sidewall of the mixed tank body of mist, the entrance point of material efferent duct 57 is positioned at the mixed tank body 50 of mist, the entrance point of material efferent duct 57 is horn-like, powder extinguishing system may be in holding state for a long time, dry powder in the mixed tank of mist this moment mixes pot bottom in the action of gravitation deposit at mist, form bulk or pie dry powder, if directly mixing to inflate in the tank to mist, powder extinguishing system carries out ejecting extinguishing, there is the few possibility of the many powder of gas from nozzle dry-powder air-current out like this, the fire extinguishing weak effect, when tank body is inflated, the atomising device that arranges can carry out one to the dry powder that is deposited on tank body in advance and break up in advance, dry powder is reduced into graininess, and carry out simultaneously the mixing of dry powder and gas, form a gas and dry powder than suitable extinguishing chemical, guarantee the fire extinguishing effect of the extinguishing chemical that ejects, improved the utilization rate of dry powder.
Describe below in conjunction with the structure of accompanying drawing 3 to Fig. 5 to the first atomizer and the second atomizer:
Described the first atomizer 55 is tubulose ringwise, lateral wall at the first atomizer 55 is provided with several the first orifices 551, the radial parallel of described the first orifice 551 and the first atomizer 55 also is provided with the second orifice 552 of several inclinations on described the first atomizer 55 madial walls.
The angle of the axial and horizontal direction of described the second orifice 552 is between 15 °～80 °.
Described the second atomizer 56 is mushroom, described the second atomizer is made 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 the second venthole 564 under described venthole is tilted to by the first venthole 563 of axis and horizontal direction parallel and axis forms.
The first atomizer that arranges and the second atomizer are by arranging 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 breaks up, the dry powder that forms bulk or pie 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 as follows:
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 determines that the wind speed around the protection zone is to rise or descend, and when detecting the wind speed rising, returns step 2, and when wind speed decreased, controller drives power assembly and inflates in the mixed tank of mist;
6) pressure sensor on the mixed tank of mist detects the pressure in the mixed tank of mist, 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 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 wind speed to the impact of 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 powder system.
2, can carry out a loosening and atomizing to the dry powder that is deposited at the bottom of the mixed tank tank of mist, because long storage time, dry powder in the mixed tank of mist can be in the action of gravitation deposit at the bottom of tank, 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, pre-the becoming flexible that the present invention carries out the dry powder that is deposited on tank body by the atomising device that arranges, the dry powder of deposition is broken up and is reduced into graininess, and in tank body, mix fully, make the interior dry powder of tank body and gas reach a mixing ratio that is fit to fire extinguishing.
Claims (7)
1. powder extinguishing system with adjustment of wind speed 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 be used for 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 the dry powder power assembly that power gas is provided for the mixed tank of mist, the dry powder power assembly is connected with the mixed tank of mist, connecting line at dry powder power assembly and the mixed tank of mist is provided with charge valve, charge valve is connected with controller, whether charge valve mixes charged pressure gas in the tank to mist according to the instruction control dry powder power assembly of controller, the exit of the mixed tank of mist is provided with the motor-driven valve that the mixed tank of control mist is opened, and the output of motor-driven valve is connected with the dry powder pipe network, is provided with several nozzles on the dry powder pipe network.
2. powder extinguishing system with adjustment of wind speed according to claim 1, it is characterized in that: also be provided with the pressure sensor that the tank internal pressure is detected on the mixed tank of described mist, described pressure sensor is connected with controller, and the pressure that detects is converted to the signal of telecommunication feeds back to controller.
3. to remove 1 described powder extinguishing system with adjustment of wind speed according to right, it is characterized in that: the mixed tank of described mist comprises that mist mixes tank body, top and the bottom of the mixed tank body of mist are respectively arranged with enterprising gas port and lower air inlet, inside at the mixed tank body of mist is provided with the atomising device that makes the dry powder atomizing, atomising device is connected with the lower air inlet of the mixed tank base of mist, atomising device is made of the first atomizer and/or the second atomizer, the port of export of a material efferent duct passes from the sidewall of the mixed tank body of mist, the entrance point of material efferent duct is positioned at the mixed tank body of mist, and the entrance point of material efferent duct is horn-like.
4. powder extinguishing system with adjustment of wind speed according to claim 3, it is characterized in that: described the first atomizer is tubulose ringwise, lateral wall at the first atomizer is provided with several the first orifices, the radial parallel of described the first orifice and the first atomizer also is provided with the second orifice of several inclinations on described the first atomizer madial wall.
5. powder extinguishing system with adjustment of wind speed according to claim 4 is characterized in that: described the second orifice axially and the angle of horizontal direction between 15 °～80 °.
6. powder extinguishing system with adjustment of wind speed according to claim 3, it is characterized in that: described the second atomizer is mushroom, described the second atomizer is made 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 the second venthole under described venthole is tilted to by the first venthole of axis and horizontal direction parallel and axis forms.
7. wind speed is regulated dry chemical extinguishing method, and its step is as follows:
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 determines that the wind speed around the protection zone is to rise or descend, and when detecting the wind speed rising, returns step 2, and when wind speed decreased, controller drives power assembly and inflates in the mixed tank of mist;
6) pressure sensor on the mixed tank of mist detects the pressure in the mixed tank of mist, 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 CN102327687A (en) | 2012-01-25 |
| CN102327687B true 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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Families Citing this family (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 |
| 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 |
| CN111569324B (en) * | 2020-05-20 | 2021-08-10 | 重庆市黔江区八方建筑工程有限责任公司 | 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 |
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