CN118477268A - Low-oxygen fireproof system and method thereof - Google Patents
Low-oxygen fireproof system and method thereof Download PDFInfo
- Publication number
- CN118477268A CN118477268A CN202410554887.2A CN202410554887A CN118477268A CN 118477268 A CN118477268 A CN 118477268A CN 202410554887 A CN202410554887 A CN 202410554887A CN 118477268 A CN118477268 A CN 118477268A
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- fire
- space
- response
- oxygen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000001301 oxygen Substances 0.000 title claims abstract description 103
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 440
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 209
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 93
- 239000007789 gas Substances 0.000 claims abstract description 68
- 230000004044 response Effects 0.000 claims abstract description 54
- 238000003860 storage Methods 0.000 claims abstract description 42
- 230000002265 prevention Effects 0.000 claims description 23
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 17
- 206010021143 Hypoxia Diseases 0.000 claims description 15
- 230000001146 hypoxic effect Effects 0.000 claims description 15
- 239000003381 stabilizer Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 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
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
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 relates to a low oxygen fire protection system comprising: a nitrogen making unit; the gas storage tank is connected to the nitrogen making unit; a control section; wherein the control portion is capable of controlling the air tank to supply nitrogen to the fire space in response to the oxygen content of the fire space being higher than the first oxygen predetermined value; and controlling the gas storage tank to stop supplying nitrogen to the fireproof space in response to the oxygen content of the fireproof space being lower than the second oxygen preset value.
Description
The application discloses a low-oxygen fireproof system and a method thereof, which are divided into a number 201711051130.8 and a date 2017, 10 and 31.
Technical Field
The invention relates to the field of fire prevention, in particular to a low-oxygen fire prevention system and a method thereof.
Background
Scientific researches show that in a low-oxygen environment with normal temperature and normal pressure and an oxygen volume fraction of about 16.8%, the combustible substances cannot be ignited. And normal people can move in the air environment with the oxygen volume fraction of 14-16%, and the harm to the body is basically avoided. Thus, a low oxygen environment may be used for fire protection. However, there is no mature solution in the prior art that meets both cost and practicality requirements.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a low-oxygen fireproof system, which comprises: a nitrogen making unit; the gas storage tank is connected to the nitrogen making unit; a control section; wherein the control portion is capable of controlling the air tank to supply nitrogen to the fire space in response to the oxygen content of the fire space being higher than the first oxygen predetermined value; and controlling the gas storage tank to stop supplying nitrogen to the fireproof space in response to the oxygen content of the fireproof space being lower than the second oxygen preset value.
The system as described above, wherein the control portion is capable of controlling the nitrogen generator set to supply nitrogen to the air tank in response to the nitrogen content of the air tank being lower than a first predetermined value; and controlling the nitrogen making unit to stop supplying nitrogen to the air storage tank in response to the nitrogen content of the air storage tank being higher than a second preset value.
The system as described above, wherein the gas storage tank supplies nitrogen through the first voltage stabilizer, wherein the nitrogen pressure outputted from the first voltage stabilizer is 0.05-1.0MPa, preferably 0.05-0.1MPa.
The system as described above, further comprising: a fire extinguishing nitrogen cylinder group comprising one or more nitrogen cylinders; wherein the control part is capable of controlling the fire extinguishing nitrogen cylinder group to supply nitrogen to the fireproof space in response to a fire alarm of the fireproof space; in response to the predetermined amount of nitrogen being provided or the oxygen content of the fire space being below the predetermined oxygen content value, the fire suppressing nitrogen cylinder group is controlled to stop providing nitrogen to the fire space.
The system as described above, further comprising: a supercharger connected to the nitrogen making unit and the fire extinguishing nitrogen cylinder group, the control section controlling the nitrogen making unit and the supercharger to charge nitrogen to the fire extinguishing nitrogen cylinder group in response to the nitrogen content of the fire extinguishing nitrogen cylinder group being lower than a third predetermined value; and controlling the nitrogen making unit and the booster to stop charging nitrogen into the fire-extinguishing nitrogen cylinder group in response to the nitrogen content of the fire-extinguishing nitrogen cylinder group being higher than a fourth preset value.
The system as described above wherein the fire extinguishing nitrogen cylinder group is supplied with nitrogen gas via a second pressure stabilizer, wherein the nitrogen gas pressure outputted by the second pressure stabilizer is 0.05-1.0MPa, preferably 0.1-0.5MPa.
The system as described above, further comprising a gas detection device installed in the fire-proof space for detecting the oxygen content in the fire-proof space; wherein the control section is capable of receiving the measured value from the gas detection device.
The system as described above, further comprising an alarm device mounted in the fire-proof space for detecting a fire; wherein the control part is capable of receiving a fire alarm from the alarm device.
The system as described above, further comprising additional gas detection means or alarm means.
The system as described above, further comprising a pipe in the fire-protected space and one or more nozzles, wherein the pipe is connected to the gas storage tank and the fire-extinguishing nitrogen cylinder group; the plurality of nozzles are positioned on the pipeline; wherein the pipe is located above the fire-protection space and/or the direction of the nozzle is directed upwards.
A system as above wherein the conduit passes through a plurality of compartments of the fire resistant space, wherein at least one nozzle is included in a compartment.
The system as described above, further comprising an automatic air intake and exhaust and/or a mechanical air exhaust in the fire space.
The system as described above further comprises a manual control device capable of controlling the gas storage tank or the fire extinguishing nitrogen cylinder group to start or stop the gas supply.
According to another aspect of the present invention, a method of operating a low oxygen fire protection system is presented, comprising: monitoring the oxygen content in the fire space; controlling the air storage tank to provide nitrogen to the fireproof space in response to the oxygen content of the fireproof space being higher than a first oxygen preset value; and controlling the air tank to stop supplying nitrogen to the fire preventing space in response to the oxygen content of the fire preventing space being lower than the second oxygen predetermined value.
The method as described above, further comprising: controlling the nitrogen generator set to provide nitrogen to the air storage tank in response to the nitrogen content of the air storage tank being lower than a first preset value; and controlling the nitrogen generator set to stop supplying nitrogen to the gas tank in response to the nitrogen content of the gas tank being higher than a second predetermined value.
The method as described above, further comprising: in response to a fire alarm in the fireproof space, controlling the fire extinguishing nitrogen cylinder group to provide nitrogen to the fireproof space; and controlling the fire extinguishing nitrogen cylinder group to stop supplying nitrogen gas to the fire preventing space in response to the predetermined amount of nitrogen gas being supplied or the oxygen content of the fire preventing space being lower than the predetermined oxygen content value.
The method as described above, further comprising: the control part controls the nitrogen making unit and the booster to charge nitrogen into the fire-extinguishing nitrogen cylinder group in response to the nitrogen content of the fire-extinguishing nitrogen cylinder group being lower than a third preset value; and controlling the nitrogen generator set and the booster to stop charging nitrogen into the fire-extinguishing nitrogen cylinder set in response to the nitrogen content of the fire-extinguishing nitrogen cylinder set being higher than a fourth predetermined value.
The method as described above, further comprising: and controlling the gas storage tank or the fire-extinguishing nitrogen cylinder group to start or stop gas supply in response to the manual control device.
The method as described above, further comprising: in response to a change in oxygen content or a fire alarm in one of the plurality of compartments in the fire prevention space, the nozzles in that compartment are controlled to supply air from the air reservoir or the fire suppressing nitrogen gas cylinder group.
The method as described above, further comprising: in response to a fire alarm in the fire space, the gas storage tank or the fire extinguishing nitrogen cylinder group is controlled to start or stop gas supply at the same time.
Drawings
Preferred embodiments of the present invention will be described in further detail below with reference to the attached drawing figures, wherein:
Fig. 1 is a schematic view of a low oxygen fire protection system according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of a nitrogen generating set according to one embodiment of the invention; and
Fig. 3 is a flow chart of a method of operating a low oxygen fire protection system according to one embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments of the application. In the drawings, like reference numerals describe substantially similar components throughout the different views. Various specific embodiments of the application are described in sufficient detail below to enable those skilled in the art to practice the teachings of the application. It is to be understood that other embodiments may be utilized or structural, logical, or electrical changes may be made to embodiments of the present application.
The fire protection system provided by the invention is based on the principle that the fire disaster can be prevented by applying the low-oxygen safety environment, namely, the nitrogen is conveyed to the protection area, and the oxygen concentration of the protection area is controlled, so that the protection area is in the normal-pressure low-oxygen fire protection environment, and the fire disaster is prevented. Further, when the oxygen concentration of the protection area is reduced below the lower limit concentration allowing combustion, the nitrogen supply device stops running so as to save energy consumption; when the oxygen concentration in the protection area rises to the upper limit concentration, restarting the nitrogen supply device, and supplementing nitrogen into the protection area. So as to achieve the purposes of avoiding combustion and fire.
There are schemes in the prior art for extinguishing fires using stored nitrogen. However, the high purity nitrogen solution is susceptible to risk; the low-purity nitrogen (12% -16% of oxygen content) can be only used in limited fields of airplanes, trains, tunnels and the like due to high gas storage cost, and can be used as a fireproof application.
Fig. 1 is a schematic view of a low oxygen fire protection system according to one embodiment of the present invention. As shown, the hypoxic fire prevention system 100 includes a nitrogen making unit 101 and a gas storage tank 102 connected to the nitrogen making unit 101. The air tank is further connected to the fire space 110 through a first voltage regulator 103. The nitrogen generator set 101 is configured to supply high purity nitrogen (greater than 99%) to the gas tank 102 and to stop operation after the pressure of the gas tank 102 reaches a first predetermined value. When the pressure of the air storage tank is reduced to a second preset value, the nitrogen making unit 101 is started to supply air to the air storage tank. For example, the first predetermined value of the pressure of the air reservoir 102 is 1.0-1.2MPa. The second predetermined value is 0.6-0.8MPa. The air reservoir 102 is used to maintain a low oxygen environment, such as an oxygen content of less than 16%, in the fire space 110.
The hypoxic fire prevention system 100 includes a control portion 200 that includes a processor 201, an input device 202, and a display screen 203. The processor 201 controls the gas reservoir 102 to supply gas to the fire protected space 110 based on the concentration of oxygen in the fire protected space 110. When the oxygen content of the fire space is greater than the first predetermined oxygen value, the air reservoir 102 is controlled to provide air to the fire space 110. When the oxygen content of the fire space drops to the second predetermined oxygen value, the processor 201 closes the valve of the air tank 102 to stop supplying air to the fire space 110.
Further, the processor 201 displays the concentration of oxygen in the fire-protected space to the user through the display screen 203. The control section 200 may also include an input device 202. A user may interact with the input device 202 and the display 203 to control the hypoxic fire prevention system of the invention. According to one embodiment of the present invention, the display 203 may be a touch screen, and has both display and input functions. Examples of processor 201 may be a central processing unit CPU, a single chip microcomputer, or a dedicated microprocessor, or other microprocessor such as a digital signal processing DSP, a field programmable gate array FPGA, a programmable logic controller PLC, a very long instruction word processor VLIW, or the like, according to one embodiment of the invention.
A gas detection device is included in the fire protected space 110 for monitoring the oxygen content in the fire protected space 110. The gas detection device may be only one sensor, so as to sample gas, and send signals such as an electrical signal, an infrared signal, etc. detected for the sampled gas to the processor 201 for processing. According to a preferred embodiment of the invention, the gas detection means may comprise a processing part of an electrical signal or an infrared signal, and the measured value of the oxygen content is sent to the processor 201. According to an embodiment of the present invention, the gas detection apparatus further includes a carbon dioxide sensor for detecting the content of carbon dioxide in the fireproof space 110.
A manual control device 108 is included in the fire space 110. The manual control means may be used to set logic in the processor 201, such as first and second predetermined values for the air reservoir 102, first and second predetermined values for the oxygen content of the fire space, etc. The manual control device 108 may also turn on and off the supply of air from the air reservoir 102 to the fire space 110.
According to one embodiment of the present invention, the oxygen content in the fire-preventing space 110 is set to be less than 16%. When the gas detection device detects that the oxygen content in the fireproof space 110 is higher than 16%, the processor 201 controls the valve of the gas storage tank 102 to open, and high-purity nitrogen gas is supplied to the fireproof space 110. The gas detection device continuously monitors the change in the oxygen content of the fire space 110. When the oxygen content is less than 15%, the processor 201 controls the valve of the air tank 102 to be closed, and stops supplying nitrogen to the fireproof space 110.
According to one embodiment of the present invention, a first voltage regulator 103 is also included in the line between the air reservoir 102 and the fire space 110. The first pressurizer 103 is a gas pressurizer or a pressurizer valve, and releases nitrogen gas at a constant pressure to the fireproof space 110. Depending on the installation or the object in the fire-proof space 110, the nitrogen pressure is provided in the range of 0.05-1.0MPa, preferably 0.05-0.1MPa.
FIG. 2 is a schematic diagram of a nitrogen generating set according to one embodiment of the present invention. As shown, the nitrogen generating unit 300 includes an air compressor 301, a gas cleaning device 302, and a nitrogen generator 303. Both the air compressor 301 and the nitrogen generator 303 together constitute the main body of the nitrogen generating section. Of course, the nitrogen producing portion may also include other elements or be implemented in other techniques in the art. Further, the air compressor 301 may be a reciprocating piston type, a rotary vane type, a rotary screw type, or the like. Nitrogen generator 302 includes molecular sieve nitrogen generation equipment, membrane nitrogen generation equipment, or other nitrogen generation equipment. In accordance with one embodiment of the present invention, nitrogen generating set 300 may also include a generator set 304. Without an external power source, the genset 304 may generate electricity itself for use by the nitrogen generating set and other portions of the subsequent low oxygen fire protection system.
Although the hypoxic fire prevention system of the invention limits the oxygen content of the fire-protected space to less than 16%, in some special cases, fires may occur in the fire-protected space.
According to one embodiment of the present invention, the hypoxic fire prevention system of the present invention can further comprise a hypoxic fire-extinguishing portion to cope with a sudden fire in the fire-resistant space. As shown in fig. 1, the low oxygen fire protection system 100 further includes a booster 104, a fire extinguishing nitrogen cylinder group 105, and a second pressurizer 106. The fire extinguishing nitrogen cylinder group 105 includes one or more nitrogen cylinders. The fire extinguishing nitrogen cylinder group 105 is connected into the fire preventing space 110 through the second pressure stabilizer 106. The second voltage stabilizer provides a pressure of 0.05-1.0MPa, preferably 0.1-0.5MPa. The number of nitrogen cylinders of the fire extinguishing nitrogen cylinder group 105 may be determined according to the conditions such as the size of the fire preventing space 110. For example, for nitrogen requiring 300m 3, the gas storage pressure of the fire extinguishing nitrogen cylinder group may be 30MPa and the required gas storage volume 1m 3.
The booster 104 is connected with the nitrogen making unit 101 and the fire extinguishing nitrogen cylinder group 105, and is used for charging nitrogen into the fire extinguishing nitrogen cylinder group 105. Specifically, in response to the nitrogen content of the fire-extinguishing nitrogen gas cylinder group 105 being lower than the third predetermined value, the control section 200 controls the nitrogen making unit 101 and the booster 104 to charge nitrogen into the fire-extinguishing nitrogen gas cylinder group 105; and controlling the nitrogen generator set 101 and the booster 104 to stop charging nitrogen into the fire-extinguishing nitrogen cylinder set in response to the nitrogen content of the fire-extinguishing nitrogen cylinder set 105 being higher than the fourth predetermined value. For example, the third predetermined value may be 25MPa and the fourth predetermined value may be 30MPa.
According to one embodiment of the invention, the fire-protected space 110 comprises an alarm device 107. The alarm device 107 has a fire detection and alarm function, and transmits a fire alarm to the control section 200 while giving an audible and visual alarm. The alarm device 107 may be any similar device known in the art including, but not limited to: photoelectric smoke detectors, temperature detectors, etc. According to one embodiment of the present invention, the fire-proof space 110 includes two sets of photo-smoke detectors and temperature detectors to achieve a redundant backup function. According to one embodiment of the present invention, the alarm device 107 also includes a separate audible and visual alarm to sound an audible and visual alarm after a fire has occurred. According to one embodiment of the invention, the gas detection means may be comprised in the alarm means 107 as part of the alarm means 107.
According to an embodiment of the present invention, the control part 200 controls the fire extinguishing nitrogen gas cylinder group 105 to supply nitrogen gas to the fire preventing space in response to a fire alarm from the alarm device 107 of the fire preventing space, and rapidly establishes a low oxygen environment to extinguish the fire. After releasing a predetermined amount of nitrogen gas or oxygen content of the fire-proof space and below a predetermined oxygen content value (e.g., 15-16% oxygen content), the control section 200 controls the fire-extinguishing nitrogen gas cylinder group 105 to stop supplying nitrogen gas to the fire-proof space.
According to one embodiment of the present invention, manual control device 108 in fire space 110 may manually activate/deactivate the valves of the fire extinguishing nitrogen cylinder group to open/stop the fire extinguishing process in fire space 110.
According to one embodiment of the present invention, the fire-protected space 110 includes an automatic air intake and exhaust device and a mechanical air exhaust device. After the nitrogen gas bottle group of putting out a fire begins to carry nitrogen gas, automatic advance exhaust apparatus can open automatically to the smog in the discharge fire prevention space. If necessary, the exhaust can also be carried out by mechanical exhaust means. After fire extinguishment, the automatic air inlet and exhaust device and the mechanical exhaust device can be opened to ventilate and ventilate the protection area, so that the staff can clean the fire scene.
According to one embodiment of the invention, the fire protection space 110 may include multiple zones, each of which may share the same low oxygen fire protection system. According to one embodiment of the invention, the fire-protected space 110 includes a duct and a plurality of nozzles thereon. The pipes are respectively connected with the gas storage tank 102 and the fire-extinguishing nitrogen cylinder group 105. Nitrogen is supplied to the fire-preventive space 110 through a plurality of nozzles on the pipe. According to one embodiment of the invention, when the oxygen content in one zone is below a first predetermined value, the control system may control the gas reservoir 102 and the nozzles in that zone to be opened, replenishing nitrogen to that zone, while the nozzles in other zones remain closed and the other zones remain unaffected. When a fire alarm occurs in one area, the control system may control the fire extinguishing nitrogen cylinder group 105 and the nozzles in that area to open, providing nitrogen to that area for fire extinguishing, while the nozzles in other areas remain closed and the other areas remain unaffected. That is, the various regions of the fire space may operate independently to share the same hypoxic fire prevention system. According to one embodiment of the invention, the conduit is arranged above the fire space and/or the direction of the nozzle is upward jet.
The potential safety hazard of providing high purity nitrogen through rapidly establishing a low oxygen environment fire extinguishing mode is that: firstly, the gas detection device in the fireproof space is damaged due to fire or other reasons, and the gas supply cannot be stopped, so that the oxygen content in the fireproof space is too low to cause danger; second, the nitrogen pressure is large and the local distribution is uneven. Particularly when accumulated at the bottom of the fireproof space, the people lying on the ground or crawling on the ground are easy to suffocate; third, nitrogen gas pressure is large and is liable to cause damage to valuables in the fireproof space.
The fireproof and fire extinguishing integrated scheme of the embodiment of the invention can completely eliminate the hidden danger. Firstly, the oxygen content in the fire-proof space and the operating state of the alarm are always monitored, so that damage to the gas detection device caused by factors other than fire can be eliminated. In the embodiment of the invention, the fireproof space can comprise 2 sets of alarm devices (all comprising the gas detection device). In the case of redundant backup, there is little possibility that all 2 sets of alarm devices will be damaged at the same time. In embodiments of the invention, where the conduit is arranged above the fire space and/or where the direction of the nozzle is upward jet, the likelihood of nitrogen accumulation at the ground surface may be reduced. In addition, since the low oxygen environment is always maintained in the fire-proof space of the present embodiment. Although a fire is caused for an abrupt cause, the oxygen content is still low overall. Thus, the nozzle may not have to use excessive pressure to avoid damage to the valuables. In particular, the injection pressure of the nozzle may be less than 1MPa, preferably less than 0.5MPa.
The fire extinguishing agent used in the low oxygen fire protection and extinguishing system of the invention is nitrogen. Therefore, the following advantages can also be provided: first, environmental factors: the nitrogen is taken from the atmosphere and returns to the atmosphere, has no influence on the environment, does not have greenhouse effect, does not destroy ozone layer, does not have residues and thermal decomposition products, and is a real green fire extinguishing agent. Second, protection of life and property: the nitrogen is used for extinguishing fire, so that the concentration of toxic substances in the air can be diluted, the chemical components are stable, atomization can not be generated during spraying, and toxic or corrosive decomposition products can not be generated during decomposition. Third, the maintenance cost, the nitrogen source is extensive, the purity of the industrial production nitrogen is higher, and the cost of both production investment and later use is very low. Fourth, fire extinguishing capability: the density of nitrogen relative to air is 0.97, the density of the fire extinguishing agent is similar to that of air, and the fire extinguishing agent can be well mixed with surrounding air when being subjected to total submerged fire extinguishing, so that the generation of reburning is effectively prevented.
Fig. 3 is a flow chart of a method of operating a low oxygen fire protection system according to one embodiment of the invention. As shown, the method 300 of operating a low oxygen fire protection system includes the steps of: in step 310, the oxygen content in the fire space is monitored. In step 320, the air reservoir is controlled to provide nitrogen to the fire space in response to the oxygen content of the fire space being greater than the first predetermined oxygen value. In step 330, the air reservoir is controlled to cease providing nitrogen to the fire space in response to the oxygen content of the fire space being below the second oxygen predetermined value.
According to one embodiment of the invention, the method of operation 300 further includes a step of air supply of the air reservoir, which includes: controlling the nitrogen generator set to provide nitrogen to the air storage tank in response to the nitrogen content of the air storage tank being lower than a first preset value; and controlling the nitrogen generator set to stop supplying nitrogen to the gas tank in response to the nitrogen content of the gas tank being higher than a second predetermined value.
According to one embodiment of the invention, the method of operation 300 further comprises a fire suppression step comprising: in response to a fire alarm in the fireproof space, controlling the fire extinguishing nitrogen cylinder group to provide nitrogen to the fireproof space; and controlling the fire extinguishing nitrogen cylinder group to stop supplying nitrogen gas to the fire preventing space in response to the predetermined amount of nitrogen gas being supplied or the oxygen content of the fire preventing space being lower than the predetermined oxygen content value. According to one embodiment of the present invention, the gas tank or the fire extinguishing nitrogen cylinder group is controlled to simultaneously start or stop gas supply in response to a fire alarm in the fireproof space.
According to one embodiment of the invention, the method of operation 300 further includes a step of inflating the fire extinguishing nitrogen cylinder group, which includes: the control part controls the nitrogen making unit and the booster to charge nitrogen into the fire-extinguishing nitrogen cylinder group in response to the nitrogen content of the fire-extinguishing nitrogen cylinder group being lower than a first preset value; and controlling the nitrogen generator set and the booster to stop charging nitrogen into the fire-extinguishing nitrogen cylinder set in response to the nitrogen content of the fire-extinguishing nitrogen cylinder set being higher than a second predetermined value.
Further, the method 300 of operation includes: and controlling the gas storage tank or the fire-extinguishing nitrogen cylinder group to start or stop gas supply in response to the manual control device. Adding a step of manual control may reduce the risk of the system.
Further, if the fire-resistant space includes a plurality of compartments, the nozzles in one of the plurality of compartments may be controlled to obtain nitrogen from the gas tank or the set of fire-suppressing nitrogen cylinders in response to a change in oxygen content or a fire alarm in one of the plurality of compartments in the fire-resistant space for maintaining a hypoxic environment or suppressing a fire.
Aiming at relics, archives, luxury goods, storehouse of Chinese medicinal materials, tobacco and the like, and places such as communication machine rooms and the like which are easy to generate fire, the low-oxygen fireproof fire extinguishing system provided by the invention is adopted, and the nitrogen production system is utilized to control the oxygen content in a fire protection space to be 15% -16% for a long time, so that the daily activities of personnel are not influenced, and the fireproof effect can be also realized. Meanwhile, an alarm device such as a photoelectric smoke detector and a temperature detector is arranged in a common warehouse, so that real-time monitoring is realized, and once a fire condition is found, the system can immediately start a fire extinguishing system to quickly extinguish the fire.
The above embodiments are provided for illustrating the present invention and not for limiting the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the scope of the present invention, therefore, all equivalent technical solutions shall fall within the scope of the present disclosure.
Claims (14)
1. A hypoxic fire prevention system for cultural relics preservation, comprising:
a nitrogen making unit;
the gas storage tank is connected to the nitrogen making unit and is configured to maintain a low-oxygen environment in the fireproof space, wherein the gas storage tank supplies nitrogen through the first voltage stabilizer, and the pressure of the nitrogen output by the first voltage stabilizer is 0.05-0.1MPa; and
A control section;
An alarm device and an additional alarm device installed in the fireproof space for detecting a fire; wherein the control section is capable of receiving a fire alarm from the alarm device;
A conduit in the fire-protected space and one or more nozzles, wherein the conduit is connected to the air reservoir; the plurality of nozzles are positioned on the pipeline; wherein the pipeline is positioned above the fireproof space and/or the direction of the nozzle is upward; the injection pressure of the nozzle is less than 1MPa; and
A fire extinguishing nitrogen cylinder group, the pipeline being connected to the fire extinguishing nitrogen cylinder group, comprising one or more nitrogen cylinders; wherein the control part is capable of controlling the fire extinguishing nitrogen cylinder group to supply nitrogen to the fireproof space in response to a fire alarm of the fireproof space; controlling the fire extinguishing nitrogen cylinder group to stop supplying nitrogen to the fire preventing space in response to the predetermined amount of nitrogen being supplied or the oxygen content of the fire preventing space being lower than the predetermined oxygen content value, wherein the fire extinguishing nitrogen cylinder group supplies nitrogen through the second voltage stabilizer, and wherein the nitrogen pressure outputted by the second voltage stabilizer is 0.1-0.5MPa;
Wherein the control part is capable of controlling the air tank to supply nitrogen to the fire prevention space in response to the oxygen content of the fire prevention space being higher than the first oxygen predetermined value, that is, 16%; controlling the air storage tank to stop supplying nitrogen to the fireproof space in response to the oxygen content of the fireproof space being lower than the second oxygen preset value, namely 15%;
Wherein the control part is capable of controlling the nitrogen generator set to supply nitrogen to the air storage tank in response to the nitrogen content of the air storage tank being lower than a first predetermined value; controlling the nitrogen generator set to stop supplying nitrogen to the air storage tank in response to the nitrogen content of the air storage tank being higher than a second preset value;
The control part comprises a processor, an input device and a display screen, wherein the processor controls the gas storage tank to provide gas for the fireproof space according to the concentration of oxygen in the fireproof space, and when the oxygen content of the fireproof space is higher than a first oxygen preset value, the gas storage tank is controlled to provide gas for the fireproof space; when the oxygen content in the fireproof space is reduced to a second oxygen preset value, the processor closes the valve of the air storage tank, and stops supplying air to the fireproof space.
2. The hypoxic fire prevention system of claim 1, further comprising: a supercharger connected to the nitrogen making unit and the fire extinguishing nitrogen cylinder group, the control section controlling the nitrogen making unit and the supercharger to charge nitrogen to the fire extinguishing nitrogen cylinder group in response to the nitrogen content of the fire extinguishing nitrogen cylinder group being lower than a third predetermined value; and controlling the nitrogen making unit and the booster to stop charging nitrogen into the fire-extinguishing nitrogen cylinder group in response to the nitrogen content of the fire-extinguishing nitrogen cylinder group being higher than a fourth preset value.
3. The hypoxic fire prevention system of claim 1, further comprising a gas detection device installed in the fire prevention space for detecting the content of oxygen in the fire prevention space; wherein the control section is capable of receiving the measured value from the gas detection device.
4. A low oxygen fire protection system according to claim 3, further comprising additional gas detection means.
5. The hypoxic fire prevention system of claim 1, wherein the piping passes through a plurality of compartments of the fire prevention space, wherein the compartments include at least one nozzle therein.
6. The hypoxic fire prevention system of claim 1, further comprising an automatic air intake and exhaust and/or a mechanical exhaust in the fire space.
7. The hypoxic fire prevention system of claim 1, further comprising a manual control device capable of controlling the gas storage tank or fire extinguishing nitrogen cylinder group to turn on or off the gas supply.
8. A method of operating the hypoxic fire prevention system of claim 1, comprising:
Monitoring the oxygen content in the fire space;
controlling the air storage tank to provide nitrogen to the fireproof space in response to the oxygen content of the fireproof space being higher than a first oxygen preset value; and
And controlling the gas storage tank to stop supplying nitrogen to the fireproof space in response to the oxygen content of the fireproof space being lower than the second oxygen preset value.
9. The method of claim 8, further comprising: controlling the nitrogen generator set to provide nitrogen to the air storage tank in response to the nitrogen content of the air storage tank being lower than a first preset value; and controlling the nitrogen generator set to stop supplying nitrogen to the gas tank in response to the nitrogen content of the gas tank being higher than a second predetermined value.
10. The method of claim 8, further comprising: in response to a fire alarm in the fireproof space, controlling the fire extinguishing nitrogen cylinder group to provide nitrogen to the fireproof space; and controlling the fire extinguishing nitrogen cylinder group to stop supplying nitrogen gas to the fire preventing space in response to the predetermined amount of nitrogen gas being supplied or the oxygen content of the fire preventing space being lower than the predetermined oxygen content value.
11. The method of claim 10, further comprising: the control part controls the nitrogen making unit and the booster to charge nitrogen into the fire-extinguishing nitrogen cylinder group in response to the nitrogen content of the fire-extinguishing nitrogen cylinder group being lower than a third preset value; and controlling the nitrogen generator set and the booster to stop charging nitrogen into the fire-extinguishing nitrogen cylinder set in response to the nitrogen content of the fire-extinguishing nitrogen cylinder set being higher than a fourth predetermined value.
12. The method of claim 10, further comprising: and controlling the gas storage tank or the fire-extinguishing nitrogen cylinder group to start or stop gas supply in response to the manual control device.
13. The method of claim 10, further comprising: in response to a change in oxygen content or a fire alarm in one of the plurality of compartments in the fire prevention space, the nozzles in that compartment are controlled to supply air from the air reservoir or the fire suppressing nitrogen gas cylinder group.
14. The method of claim 10, further comprising: in response to a fire alarm in the fire space, the gas storage tank or the fire extinguishing nitrogen cylinder group is controlled to start or stop gas supply at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410554887.2A CN118477268A (en) | 2017-10-31 | 2017-10-31 | Low-oxygen fireproof system and method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410554887.2A CN118477268A (en) | 2017-10-31 | 2017-10-31 | Low-oxygen fireproof system and method thereof |
| CN201711051130.8A CN107875539A (en) | 2017-10-31 | 2017-10-31 | A kind of hypoxic fire prevention system and its method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711051130.8A Division CN107875539A (en) | 2017-10-31 | 2017-10-31 | A kind of hypoxic fire prevention system and its method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118477268A true CN118477268A (en) | 2024-08-13 |
Family
ID=61783298
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711051130.8A Pending CN107875539A (en) | 2017-10-31 | 2017-10-31 | A kind of hypoxic fire prevention system and its method |
| CN202410554887.2A Pending CN118477268A (en) | 2017-10-31 | 2017-10-31 | Low-oxygen fireproof system and method thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711051130.8A Pending CN107875539A (en) | 2017-10-31 | 2017-10-31 | A kind of hypoxic fire prevention system and its method |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN107875539A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110090374B (en) * | 2019-04-19 | 2024-08-30 | 高邮摩世勒公共安全设备有限公司 | Fire prevention and extinguishing device and method for locomotive lithium battery energy storage device |
| CN113509658A (en) * | 2021-07-07 | 2021-10-19 | 上海格创机电设备成套有限公司 | Automatic fire extinguishing system and method for chemical supply cabinet |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19811851C2 (en) * | 1998-03-18 | 2001-01-04 | Wagner Alarm Sicherung | Inerting procedure for fire prevention and extinguishing in closed rooms |
| CN1533814A (en) * | 2003-03-27 | 2004-10-06 | 廖赤虹 | Fire disaster prevention of sealed space and fire extinguishing equipmet |
| DE10352437A1 (en) * | 2003-11-10 | 2005-06-16 | Wagner Alarm- Und Sicherungssysteme Gmbh | Device for preventing and extinguishing fires |
| ES2549754T3 (en) * | 2007-08-01 | 2015-11-02 | Amrona Ag | Device and procedure for fire prevention and for extinguishing a fire that has occurred in a closed room |
| CN101161309A (en) * | 2007-11-09 | 2008-04-16 | 北京海安高科消防技术有限公司 | Combined imputation type nitrogen gas fire extinguisher system apparatus |
| ES2351888T3 (en) * | 2008-10-07 | 2011-02-11 | Amrona Ag | INSTALLATION OF FIRE EXTINGUISHING BY GAS INERTE TO REDUCE THE RISK AND EXTINGUISH FIRE IN A PROTECTED PREMISES. |
| CN201543145U (en) * | 2009-12-09 | 2010-08-11 | 保定天威集团有限公司 | Automatic fire extinguishing device for generator room |
| CN203139455U (en) * | 2013-04-10 | 2013-08-21 | 广东胜捷工业安全技术有限公司 | Intelligent remote large-space nitrogen-injection fire prevention system |
| CN205235208U (en) * | 2015-12-01 | 2016-05-18 | 湖南万容科技股份有限公司 | Fire protection system |
| CN205964802U (en) * | 2016-07-25 | 2017-02-22 | 吴树林 | Active fire protection system |
| CN106492370A (en) * | 2016-12-10 | 2017-03-15 | 厦门泰消防科技开发有限公司 | A kind of note nitrogen control oxygen active fire precaution system and its using method |
-
2017
- 2017-10-31 CN CN201711051130.8A patent/CN107875539A/en active Pending
- 2017-10-31 CN CN202410554887.2A patent/CN118477268A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN107875539A (en) | 2018-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109513135B (en) | Fire-fighting system and method for energy storage container | |
| CN113144467B (en) | Urban underground comprehensive pipe rack electric power cabin distributed total nitrogen fire extinguishing system and method thereof | |
| CN101966375B (en) | Fire extinguishing system of wind generating set | |
| CN205598472U (en) | Vehicle safety battery box and vehicle power safety coefficient | |
| CN215585304U (en) | Full nitrogen fire extinguishing systems of city utility tunnel electric power cabin distributing type | |
| CN118477268A (en) | Low-oxygen fireproof system and method thereof | |
| CN109999394A (en) | A kind of nitrogen automatic fire prevention fire extinguishing system | |
| CN101161309A (en) | Combined imputation type nitrogen gas fire extinguisher system apparatus | |
| CN206660385U (en) | A kind of portable combined type fire extinguishing system | |
| CN105477806A (en) | Ground-source CO2 storage fire extinguishing system and high rack warehouse with same | |
| KR101278659B1 (en) | fire protection apparatus | |
| CN207919942U (en) | A kind of teaching building fire-fighting guardrail | |
| CN202223802U (en) | Self-extinguishing control system adopting cold-air collosol | |
| CN212090657U (en) | Fire prevention fire control unit | |
| CN1247279C (en) | Method of extinguishing of fire in open or closed spaces and means for performing the method | |
| KR20140070779A (en) | Integrated fire fighting management system of ship and method thereof | |
| CN201921359U (en) | Fire extinguishing system for wind power generation set | |
| NL2005991C2 (en) | HYPOXIC FIRE-FIGHTING SYSTEM, BUILDING EQUIPPED WITH IT AND METHOD FOR THIS. | |
| WO2019035142A1 (en) | An advanced fire prevention system and method thereof | |
| CN210472834U (en) | Oiling machine and filling station with automatic fire extinguishing function | |
| CN205307654U (en) | Ground source is stored CO2 fire extinguishing systems and is contained this fire extinguishing systems's overhead warehouse | |
| CN221332595U (en) | Automatic fire extinguishing device for laboratory fume hood | |
| CN202161732U (en) | Combined device of fixed pipe network type nitrogen fire-extinguishing system | |
| CN206026935U (en) | Take fire extinguishing apparatus of unfamiliar air pump | |
| CN205460612U (en) | Temperature feedback formula water smoke extinguishing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |