CN106492370A - A kind of note nitrogen control oxygen active fire precaution system and its using method - Google Patents
A kind of note nitrogen control oxygen active fire precaution system and its using method Download PDFInfo
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- CN106492370A CN106492370A CN201611134397.9A CN201611134397A CN106492370A CN 106492370 A CN106492370 A CN 106492370A CN 201611134397 A CN201611134397 A CN 201611134397A CN 106492370 A CN106492370 A CN 106492370A
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- Prior art keywords
- nitrogen
- oxygen concentration
- oxygen
- flameproof protection
- protection space
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 249
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 124
- 239000001301 oxygen Substances 0.000 title claims abstract description 116
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 116
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 230000006378 damage Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000002808 molecular sieve Substances 0.000 description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 4
- 230000027734 detection of oxygen Effects 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 229940032021 tetramune Drugs 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a kind of note nitrogen control oxygen active fire precaution system; including for nitrogen device, control module and at least one flameproof protection space; nitrogen is passed through in flameproof protection space for nitrogen device, and control module includes master controller, oxygen concentration upper limit module, oxygen concentration lower limit module, alarm controller and alarm device；Its using method, comprises the following steps：Step 1, given threshold；Step 2, is input into nitrogen；Step 3, detects the oxygen density value in flameproof protection space；Step 4, judges oxygen density value.Condition that is of the invention real-time and accurately attaining guarantee safety, plays the effect of active fire precaution, it is ensured that the safety of environment, personnel and property.
Description
Technical field
The invention belongs to fire safety field, more particularly to a kind of note nitrogen control oxygen active fire precaution system and its using method.
Background technology
At present, for security against fire, various automatic fire extinguishing systems are generally installed in building.For there are important setting
The closing space (such as all kinds of machine rooms, valuable cargo storehouse etc.) of standby or goods and materials, in order to prevent protected object to be situated between from fire extinguishing
Matter is stained, and will often install chemistry or inert gas fire-fighting system.These gas extinguishing systems must adopt big quantity high pressure steel
Bottle or Large Copacity pressure vessel, will fire extinguishing required for firing-fighting medium long term storage at the scene, pending light a fire calamity when just discharge
Come, puted out a fire to save life and property using the effect of aerochemistry or physics.
One key character of all kinds of fire extinguishing systems is rather than the active fire precaution based on fire extinguishing, that is, need to send out in fire
Fire extinguishing function is just passively played after raw, and cannot be avoided the generation of fire.One major defect of all kinds of gas extinguishing systems
It is to cause the destruction to ecological environment (harm of chemical substance or gas) unavoidably, the personnel's harm in guard space (is included
Asphyxia and murder by poisoning) and the damage (cold shock, jet impulse etc.) to internal unit goods and materials.Can be by going out even if some are referred to as
Fiery concentration control, reaches the gas extinguishing system safe and harmless to human life, in fact in actual use, due to being difficult in real time
And its various condition (such as guard space volume, foamite amount etc.) for ensureing safety is accurately attained, so still cannot reach
Target to safe fanout free region.
In view of this, the present inventor specially devises a kind of note nitrogen control oxygen active fire precaution system and its using method, this case
Thus produce.
Content of the invention
The present invention is to solve the above problems, there is provided a kind of note nitrogen control oxygen active fire precaution system and its using method, with reality
When and accurately attain ensure safety condition, play the effect of active fire precaution, it is ensured that the safety of environment, personnel and property.
For achieving the above object, the technical solution used in the present invention is：
A kind of note nitrogen control oxygen active fire precaution system, including for nitrogen device, control module and at least one flameproof protection space,
Nitrogen is passed through in flameproof protection space for nitrogen device, is provided with two oxygen concentration detectors, control module in flameproof protection space
For nitrogen device and oxygen concentration detector, control module includes master controller, oxygen concentration upper limit module, oxygen concentration lower limit for connection respectively
Module, alarm controller and alarm device, master controller connect oxygen concentration upper limit module, oxygen concentration lower limit module and warning respectively
Controller, alarm controller connect alarm device, and master controller and alarm controller are respectively positioned at the inside in flameproof protection space
And outside.
The volume in the flameproof protection space is less than 540m3When, for nitrogen device by without pipe network note nitrogen by way of to fire prevention
Nitrogen is passed through in guard space；The volume in flameproof protection space is 540-8000m3When, for the side that nitrogen device notes nitrogen by pipe network
Formula is passed through nitrogen in flameproof protection space.
The confession nitrogen device includes air compressor unit and gas seperator group, air compressor unit and gas seperator group
Flameproof protection space is located at respectively outwardly and inwardly, air compressor unit and gas seperator group cooperate realization without pipe network
Note nitrogen.
Note nitrogen control oxygen active fire precaution system also includes admission line and note nitrogen pipeline, vertical by admission line for nitrogen device
Connection note nitrogen pipeline, note nitrogen pipeline are uniformly arranged in flameproof protection space, and note nitrogen pipeline is provided with least two nitrogen note
Entrance, nitrogen injection port are symmetrically distributed in the both sides of admission line, to realize pipe network note nitrogen.
The nitrogen injection port is vertically downward.
Note nitrogen control oxygen active fire precaution system also includes oxygen concentration display module, the oxygen concentration display module connection control of reporting to the police
Device processed.
Distance of the installation site of the oxygen concentration detector away from ground is 1.5-1.6m.
A kind of using method of note nitrogen control oxygen active fire precaution system, comprises the following steps：
Step 1, sets oxygen concentration upper limit module, oxygen concentration lower limit module and the alarm controller of control module；
Step 2, is input into nitrogen for nitrogen device to flameproof protection space；
In the oxygen concentration detector in flameproof protection space, step 3, can detect that the oxygen in flameproof protection space is dense at any time
Angle value, and detection data is passed to the master controller of control module；
Step 4, if the oxygen density value of oxygen concentration detector detection is higher than the threshold value of oxygen concentration upper limit module settings, from
Dynamic startup supplies nitrogen device, if the oxygen density value of oxygen concentration detector detection is less than the threshold value of oxygen concentration lower limit module settings,
It is automatically switched off for nitrogen device, if the threshold range that the oxygen density value of oxygen concentration detector detection is not set in alarm controller
Interior, then automatically turn on alarm device.
In the step 4, as no one in flameproof protection space, the threshold value of oxygen concentration upper limit module settings is 13.5%,
The threshold value of oxygen concentration lower limit module settings is 12.5%, and the threshold range that alarm controller sets is as 12.0-14.0%.
In the step 4, when someone's short stay is in flameproof protection space, the threshold value of oxygen concentration upper limit module settings
For 16.0%, the threshold value of oxygen concentration lower limit module settings is 14.0%, and the threshold range that alarm controller sets is as 13.0-
17.0%.
After using such scheme, the present invention in real time and can accurately attain the condition for ensureing safety, play active fire precaution
Effect, play the effect of being effectively protected in particular for environment, personnel and property：
1) environmental protection
For nitrogen, nitrogen is All Pure Nature gas to the gas that adopts of the present invention, and its use will not destroy ecology and environment；
2) life is protected
Oxygen concentration in flameproof protection space declines with the injection of nitrogen, fire is lighted, especially works as oxygen concentration
When as little as between 14%-16%, will not catch fire in flameproof protection space, it is often more important that, oxygen concentration now is harmless；
3) property is protected
The present invention is to inject the gaseous nitrogen atmosphere of normal pressure in flameproof protection space, drops the oxygen concentration in flameproof protection space
Low, in the environment, fire cannot be lighted, any equipment that will not be destroyed in flameproof protection space, or even this low-oxygen environment is also
The destruction caused because of oxidation reaction can be delayed, property is played and is most fully and effectively protected.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the structure principle chart of the present invention；
Fig. 2 is the structure principle chart of control module of the present invention.
In figure：
1- supplies nitrogen device；2- control modules；21- master controllers；22- oxygen concentration upper limit modules；23- oxygen concentration lower limit moulds
Block；24- alarm controllers；25- alarm devices；3- oxygen concentration detectors.
Specific embodiment
In order that the technical problem to be solved, technical scheme and beneficial effect are clearer, clear, below tie
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
As depicted in figs. 1 and 2, a kind of note nitrogen control oxygen active fire precaution system of the invention, including for nitrogen device 1, control mould
Block 2 and at least one flameproof protection space, are passed through nitrogen in flameproof protection space for nitrogen device 1, and flameproof protection is set in space
There are two oxygen concentration detectors 3, control module 2 to connect for nitrogen device 1 and oxygen concentration detector 3 respectively, control module 2 includes leading
Controller 21, oxygen concentration upper limit module 22, oxygen concentration lower limit module 23, alarm controller 24 and alarm device 25, master controller
21 connect oxygen concentration upper limit module 22, oxygen concentration lower limit module 23 and alarm controller 24, the connection report of alarm controller 24 respectively
Alarm device 25, master controller 21 and alarm controller 24 are located at the inside and outside of flameproof protection space respectively.Alarm device 25
It can be acoustic-optic alarm.
Above-mentioned confession nitrogen device 1 can be one area of a machine, one area of a machine multi-region or multimachine with the configuration in flameproof protection space.
Voltage for nitrogen device 1 adopts 220VAC or 380VAC.Installed power adopts 220V for the voltage of the confession nitrogen device 1 of below 4kW
Or 380VAC；Installed power adopts 3 phases 380VAC for the voltage of the confession nitrogen device 1 of 4kW and more than 4kW.Separate unit is for nitrogen device 1
Important technological parameters can refer to following table.
Important technological parameters of 1 separate unit of table for nitrogen device
Meanwhile, flameproof protection space is built by laying bricks or stones using the higher construction material of density, and its gap is simultaneously sealed using incombustible material
Stifled.Door and window in guard period, flameproof protection space must not be opened, and its tightness class is not lower than existing national standards
《The classification of external window of building air-tightness and detection method》III grade of level of the regulations of GB/T 7107.
Flameproof protection space is additionally provided with gas permeation detection means, and gas permeation detection means connects the master controller
21, the door and window in the control flameproof protection of master controller 21 space, to control door and window automatic switch.
Wherein, the surrounding of door and window opening should be sealed using sealing strip and transparent plastic cloth.
The floor in flameproof protection space, roof and go along with sb. to guard him and there should not be not normally opened hole, if there is hole, using having
The material of identical fire endurance carries out blocking tightly.Meanwhile, resistance is provided with to the pipeline that must pass through in flameproof protection space, wire casing
Disconnected cross-ventilated measure.
Present invention may apply to following relatively closed place：
1st, there is the electrical equipment place of solid, liquid, gaseous combustible thing；
2nd, the unmanned place (such as oil storage tank, dangerous goods store etc.) for stopping；
3rd, someone's short stay place (as between bridge crane, tower crane, shore tackle, machine room, unattended duty, switchgear house, cable interlayer
Between, cable trough, cable tunnel, warehouse, tobacco warehouse, bank vault, archives, collection shop, historical relic shop, communication and telecommunication apparatus
Between etc.)；
4th, the place under low-oxygen environment without adverse consequencess.
The present invention is not suitable for following place：
1st, there are the energetic materials such as nitrocellulose, powder explosive, or there are the active metals such as potassium, sodium, magnesium, titanium, zirconium, or have hydrogen
Change the hydrogenation Tetramune such as potassium, sodium hydride, or have the place of the easily spontaneous combustible substance such as phosphorus；
2nd, non-relative confined space, or have the place of the air conditioning system with fresh air supply；
3rd, there is the place (such as boiler room, kitchen etc.) of naked light.
In the present embodiment, when the volume in flameproof protection space is less than 540m3When, pass through to note nitrogen without pipe network for nitrogen device 1
Mode be passed through nitrogen in flameproof protection space；When the volume in flameproof protection space is 540-8000m3When, logical for nitrogen device 1
The mode for crossing pipe network note nitrogen is passed through nitrogen in flameproof protection space.
When the volume in flameproof protection space is less than 540m3When, include air compressor unit and gas seperator for nitrogen device 1
Group, air compressor unit and gas seperator group respectively be located at flameproof protection space outwardly and inwardly, air compressor unit and
Gas separates unit and cooperates realization without pipe network note nitrogen.Wherein, it can be molecular-sieve type deaerator that gas separates unit,
It can also be membrane separator.The present invention is by air compressing and converting absorption principle, empty to separate using this transformation pressure absorption processing procedure
Gas composition.
Further, molecular-sieve type deaerator includes that compressed air is injected by two molecular sieve grooves, air compressor
In two sieve grooves, because nitrogen molecular is big compared with oxygen molecule, oxygen molecule can be adsorbed in groove and be discharged by tapping equipment again, most
Afterwards, nitrogen is able to be stored in molecular sieve groove, and is used for injecting in flameproof protection space.
Preferably, air compressor unit is arranged on outside flameproof protection space, and near flameproof protection space, air compresses
Unit and the distance between flameproof protection space no more than 50m.
Further, wall face of the air compressor unit away from flameproof protection space is not less than 200mm, air compressor unit
Long side is parallel with adjacent exterior wall.
Further, air compressor unit is just faced outwardly, to overhaul.
Note nitrogen control oxygen active fire precaution system also includes standby confession nitrogen device, standby confession nitrogen device link control module 2, in case
The possible period of want or need.Preferably, the installed power of standby confession nitrogen device is not less than the maximum installation for nitrogen device in flameproof protection space
Power.
When the volume in flameproof protection space is 540-8000m3, note nitrogen control oxygen active fire precaution system also includes admission line
With note nitrogen pipeline, note nitrogen pipeline is vertically connected by admission line for nitrogen device 1, it is empty that note nitrogen pipeline is uniformly arranged on flameproof protection
In, and note nitrogen pipeline is provided with least two nitrogen injection ports, nitrogen injection port is symmetrically distributed in the both sides of admission line, with
Realize pipe network note nitrogen.
In order that flameproof effect is more preferably, admission line and note nitrogen pipeline are fire-retardant shape plastic pipe, hot galvanized steel pipe, rustless steel
Pipe, copper pipe, steel-plastics composite pipe etc..
In the present embodiment, nitrogen injection port vertically downward, quickly to play fireproof purpose.
Note nitrogen control oxygen active fire precaution system also includes oxygen concentration display module, the oxygen concentration display module connection control of reporting to the police
Device processed 24, is further easy to observe and operates, and contributes in real time and accurately attain the condition for ensureing safety.
Preferably, 3 installation site of oxygen concentration detector is away from nitrogen injection port, and the installation site of oxygen concentration detector 3
Distance away from ground is 1.5-1.6m.
In order to further be easy to observe and operate, the distance of the installation site of alarm controller 24 away from ground is 1.5-
1.6m.
Present invention further teaches a kind of using method of note nitrogen control oxygen active fire precaution system, comprises the following steps：
Step 1, sets oxygen concentration upper limit module 22, oxygen concentration lower limit module 23 and the alarm controller 24 of control module 2；
Step 2, is input into nitrogen for nitrogen device 1 to flameproof protection space；
In the oxygen concentration detector 3 in flameproof protection space, step 3, can detect that the oxygen in flameproof protection space is dense at any time
Angle value, and detection data is passed to the master controller 21 of control module 2；
Step 4, if the oxygen density value of the detection of oxygen concentration detector 3 is higher than the threshold value that oxygen concentration upper limit module 22 sets,
Then automatic supplies nitrogen device 1, if what the oxygen density value of the detection of oxygen concentration detector 3 was set less than oxygen concentration lower limit module 23
Threshold value, then be automatically switched off for nitrogen device 1, if the oxygen density value of the detection of oxygen concentration detector 3 is not set in alarm controller 24
Threshold range in, then automatically turn on alarm device 25.
In above-mentioned steps 4, as no one in flameproof protection space, threshold value that oxygen concentration upper limit module 22 sets as
13.5%, as 12.5%, the threshold range that alarm controller 24 sets is as 12.0- for the threshold value that oxygen concentration lower limit module 23 sets
14.0%, to play optimal flameproof effect.
Similarly, in step 4, when someone's short stay is in flameproof protection space, oxygen concentration upper limit module 22 sets
Threshold value be 16.0%, the threshold value that oxygen concentration lower limit module 23 sets as 14.0%, alarm controller 24 setting threshold range
For 13.0-17.0%.
The present invention in real time and can accurately attain the condition for ensureing safety, play the effect of active fire precaution, especially pin
The effect of being effectively protected is played to environment, personnel and property：
1) environmental protection
For nitrogen, nitrogen is All Pure Nature gas to the gas that adopts of the present invention, and its use will not destroy ecology and environment；
2) life is protected
Oxygen concentration in flameproof protection space declines with the injection of nitrogen, fire is lighted, especially works as oxygen concentration
When as little as between 14%-16%, will not catch fire in flameproof protection space, it is often more important that, oxygen concentration now is harmless；
3) property is protected
The present invention is to inject the gaseous nitrogen atmosphere of normal pressure in flameproof protection space, drops the oxygen concentration in flameproof protection space
Low, in the environment, fire cannot be lighted, any equipment that will not be destroyed in flameproof protection space, or even this low-oxygen environment is also
The destruction caused because of oxidation reaction can be delayed, property is played and is most fully and effectively protected.
Described above illustrates and describes the preferred embodiments of the present invention, as previously mentioned, it should be understood that not office of the invention
Be limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and can be used for various other combinations, modification and
Environment, and can be changed by the technology or knowledge of above-mentioned teaching or association area in invention contemplated scope described herein
Dynamic.And change that those skilled in the art are carried out and change be without departing from the spirit and scope of the present invention, then all should be appended by the present invention
In scope of the claims.
Claims (10)
1. one kind notes nitrogen control oxygen active fire precaution system, it is characterised in that：Including for nitrogen device, control module and at least one fire prevention
Guard space, is passed through nitrogen in flameproof protection space for nitrogen device, is provided with two oxygen concentration detectors in flameproof protection space,
Control module connects respectively for nitrogen device and oxygen concentration detector, and control module includes master controller, oxygen concentration upper limit module, oxygen
Concentration limit module, alarm controller and alarm device, master controller connect oxygen concentration upper limit module, oxygen concentration lower limit mould respectively
Block and alarm controller, alarm controller connect alarm device, and master controller and alarm controller are located at flameproof protection sky respectively
Between inside and outside.
2. one kind according to claim 1 notes nitrogen control oxygen active fire precaution system, it is characterised in that：The flameproof protection space
Volume be less than 540m3When, be passed through nitrogen for nitrogen device by way of nitrogen being noted without pipe network in flameproof protection space；Fire prevention is protected
The volume in shield space is 540-8000m3When, nitrogen is passed through for nitrogen device in flameproof protection space by way of pipe network notes nitrogen
Gas.
3. one kind according to claim 2 notes nitrogen control oxygen active fire precaution system, it is characterised in that：The confession nitrogen device includes
Air compressor unit and gas seperator group, air compressor unit and gas seperator group are located at the outer of flameproof protection space respectively
Portion and inside, air compressor unit and gas seperator group cooperate realization without pipe network note nitrogen.
4. one kind according to claim 2 notes nitrogen control oxygen active fire precaution system, it is characterised in that：Also include admission line and
Note nitrogen pipeline, the confession nitrogen device vertically connect note nitrogen pipeline by admission line, and note nitrogen pipeline is uniformly arranged on flameproof protection
In space, and note nitrogen pipeline is provided with least two nitrogen injection ports, and nitrogen injection port is symmetrically distributed in the both sides of admission line,
To realize pipe network note nitrogen.
5. one kind according to claim 4 notes nitrogen control oxygen active fire precaution system, it is characterised in that：The nitrogen injection port hangs down
Straight downward.
6. one kind according to claim 1 notes nitrogen control oxygen active fire precaution system, it is characterised in that：Also include that oxygen concentration shows
Module, oxygen concentration display module connect the alarm controller.
7. one kind according to claim 1 notes nitrogen control oxygen active fire precaution system, it is characterised in that：The oxygen concentration detector
Distance of the installation site away from ground be 1.5-1.6m.
8. a kind of note nitrogen control oxygen active fire precaution system using method, it is characterised in that comprise the following steps：
Step 1, sets oxygen concentration upper limit module, oxygen concentration lower limit module and the alarm controller of control module；
Step 2, is input into nitrogen for nitrogen device to flameproof protection space；
Step 3, can detect the oxygen density value in flameproof protection space at any time in the oxygen concentration detector in flameproof protection space,
And detection data is passed to the master controller of control module；
Step 4, if the oxygen density value of oxygen concentration detector detection is opened automatically higher than the threshold value of oxygen concentration upper limit module settings
Move and supply nitrogen device, if threshold value of the oxygen density value of oxygen concentration detector detection less than oxygen concentration lower limit module settings, automatically
Close and supply nitrogen device, if the oxygen density value of oxygen concentration detector detection is not in the threshold range that alarm controller sets,
Automatically turn on alarm device.
9. according to claim 8 a kind of note nitrogen control oxygen active fire precaution system using method, it is characterised in that：The step
In rapid 4, as no one in flameproof protection space, the threshold value of oxygen concentration upper limit module settings is 13.5%, oxygen concentration lower limit module
, as 12.5%, the threshold range that alarm controller sets is as 12.0-14.0% for the threshold value for setting.
10. according to claim 8 a kind of note nitrogen control oxygen active fire precaution system using method, it is characterised in that：Described
In step 4, when someone's short stay is in flameproof protection space, the threshold value of oxygen concentration upper limit module settings is 16.0%, oxygen
The threshold value of concentration limit module settings is 14.0%, and the threshold range that alarm controller sets is as 13.0-17.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109418657A (en) * | 2017-08-31 | 2019-03-05 | 王振牛 | A kind of method of the anti-oxidation brown stain of fruit juice pulp production line |
| CN109999394A (en) * | 2019-04-12 | 2019-07-12 | 天津中怡建筑规划设计有限公司 | A kind of nitrogen automatic fire prevention fire extinguishing system |
| CN114733105A (en) * | 2022-03-29 | 2022-07-12 | 中国安全生产科学研究院 | A Calculation Method of Nitrogen Injection Amount for Fire Prevention in Limited Space |
| CN115591155A (en) * | 2022-11-03 | 2023-01-13 | 上海穗杉实业股份有限公司（Cn） | Nitrogen injection and oxygen control environment-controlled fire protection system and method for reducing nitrogen injection time |
| CN116610055A (en) * | 2023-05-25 | 2023-08-18 | 应急管理部沈阳消防研究所 | Oxygen-reduction nitrogen-injection fire disaster prevention and control testing system and method |
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Application publication date: 20170315 |