WO2013032360A1 - Procédé et système de détection et de détermination de l'emplacement de substances non désirées dans des zones surveillées et unité d'évacuation d'un collecteur d'air pour ce système - Google Patents
Procédé et système de détection et de détermination de l'emplacement de substances non désirées dans des zones surveillées et unité d'évacuation d'un collecteur d'air pour ce système Download PDFInfo
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- WO2013032360A1 WO2013032360A1 PCT/RU2012/000408 RU2012000408W WO2013032360A1 WO 2013032360 A1 WO2013032360 A1 WO 2013032360A1 RU 2012000408 W RU2012000408 W RU 2012000408W WO 2013032360 A1 WO2013032360 A1 WO 2013032360A1
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- Prior art keywords
- air
- substances
- air flow
- concentration
- channel
- Prior art date
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- 239000000428 dust Substances 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 8
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- 238000010926 purge Methods 0.000 description 4
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- ZPUCINDJVBIVPJ-LJISPDSOSA-N cocaine Chemical compound O([C@H]1C[C@@H]2CC[C@@H](N2C)[C@H]1C(=O)OC)C(=O)C1=CC=CC=C1 ZPUCINDJVBIVPJ-LJISPDSOSA-N 0.000 description 2
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- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical compound CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
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- SNIOPGDIGTZGOP-UHFFFAOYSA-N Nitroglycerin Chemical compound [O-][N+](=O)OCC(O[N+]([O-])=O)CO[N+]([O-])=O SNIOPGDIGTZGOP-UHFFFAOYSA-N 0.000 description 1
- 239000000006 Nitroglycerin Substances 0.000 description 1
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G29/00—Supports, holders, or containers for household use, not provided for in groups A47G1/00-A47G27/00 or A47G33/00
- A47G29/12—Mail or newspaper receptacles, e.g. letter-boxes; Openings in doors or the like for delivering mail or newspapers
- A47G29/122—Parts, details, or accessories, e.g. signalling devices, lamps, devices for leaving messages
- A47G2029/1221—Parts, details, or accessories, e.g. signalling devices, lamps, devices for leaving messages comprising means to detect or prevent a terrorist attack, e.g. to detect anthrax-laced letters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/44—Protection from terrorism or theft
Definitions
- the invention relates to methods and systems for ensuring the safety of people reacting to undesirable factors of a terrorist or other emergency nature, namely, to a method and system for detecting and determining the location of undesirable substances, in particular explosive, poisonous and narcotic substances, in controlled areas located in public and industrial buildings and structures, public transport, in places of crowding and resting people, etc., and to the construction of the exit node of such a system.
- a known method and device for detecting fire in controlled areas by which it can be identified the location of the source of the fire [WO 00/68909, publ. 16.1 1 .2000].
- a detection device is used in each monitored area, containing two intersecting pipelines, in which one or more fans continuously suck air from the monitored zones through the intake air inlets located in the pipelines and deliver it to the sensors for fire parameter detection.
- the identification of the location of the fire follows from the investigation of the response of two sensors located in intersecting pipelines, which are arranged like rows and columns of the matrix, where in each column or row of the matrix there is one common sensor, which allows you to control many zones.
- a disadvantage of the known system is its relative complexity and, as a consequence, significant costs for its installation and maintenance.
- a known system for detecting and determining the location of fire sources in controlled areas including a system of suction pipelines connecting a plurality of controlled zones, which are connected to each controlled zone using air intake openings, an intake device for sampling air that displays the state of the air of the controlled zones, a sensor for detecting a fire parameter in air samples (for example, the presence or excess of a certain threshold value of a substance in the air), and a purge device for purging the suction piping system in when A detector detects a fire parameter in air samples taken.
- the location of a fire is determined by measuring the residence time of air samples repeatedly taken with a fire parameter after purging the suction piping system.
- the disadvantage of this system can be attributed to the fact that it provides a relatively low accuracy in determining the controlled zone with the source of the fire, especially with the close proximity of the controlled zones, because the location of the controlled zone is determined by the time it takes for the re-sampled air to pass through the sensor after purging, and the parameters affecting the time of passage, in particular, the air flow rate inside the suction piping system, depend on many variable factors.
- a device for detecting air pollution for a system of suction pipelines having a large number of places for taking air samples from controlled rooms [WO 93/23736, publ. 25.1 1.1993].
- This air pollution detection device has a plurality of inlets connected to a network of such a suction system and individually controlled. Under normal circumstances, all of these inlet openings remain open until the detection device detects contamination / smoke. By selectively closing the inlet openings, it subsequently becomes possible to identify a specific fire zone.
- This system generally includes an air manifold; a plurality of suction lines, each of which is connected at one end to an air collector and the other end is connected to the space inside the controlled area, respectively; an exhaust device installed at the outlet of the air manifold; gas or smoke sensor for sampling and analysis of air samples at the outlet of the air manifold; many valves with which each of the suction lines is equipped; means for opening / closing valves; and a control unit connected to the sensor and the means for opening / closing the valves so as to control the opening / closing of the valves for simultaneously, sequentially or alternately closing or opening them to determine a controlled area in which there is unwanted gas or smoke in response to signals sensor.
- a fire is detected in such a way that, in the absence of a detectable signal, the control unit sets the position of the valves so that all suction lines are connected to the sensor through the air collector together, and if a detectable signal appears, h the control unit sets the valve in measuring mode, in which the suction lines are directly or in groups connected to the sensor.
- the technical problem for which the present invention is proposed is to reduce the threshold sensitivity of the detection system and determine the location of unwanted substances in controlled areas so as to determine the presence of ultra-small quantities of undesirable substances in the air of controlled zones. trace amounts of substances associated with the possibility of an emergency.
- a system for detecting and determining the location of unwanted substances in controlled areas including: an air collector; a plurality of air ducts, each of which is connected at one end to an air manifold, and at the other end is connected to a space inside a controlled area, respectively; an exhaust device installed at the outlet of the air manifold; air composition analyzer for sampling air at the outlet of the air manifold; many dampers with which each of the ducts is equipped; means of opening / closing dampers; control means connected to the air composition analyzer and the means for opening / closing the shutters so as to control the opening / closing of the shutters to simultaneously, sequentially or alternately close or open and determine the controlled area in which the unwanted substance is located in response to signals from an air analyzer.
- the system further includes a concentration means for increasing the concentration of undesired substances vapors in the part of the outlet channel of the air collector, while the air analyzer includes a sampling device that is installed so as to take air samples in the part of the channel an air manifold outlet with an increased concentration of undesired substance vapors.
- the inventive system is especially relevant when there are a large number of controlled zones and, accordingly, air ducts connecting them to the air manifold, i.e. when the concentration of undesirable substances in vapor vozdu- xe 'controlled area is greatly reduced by mixing in air kol lecturer with clean air from the other controlled zones.
- the physical principle of the action of the means of concentration of undesired substances vapors in a certain part of the channel can be based on the fact that the molecules of most undesirable substances, for example, explosive, poisonous and / or narcotic substances, have a much larger molecular weight and molecular size than molecules of air gases (oxygen, nitrogen, carbon dioxide, etc.).
- the means of concentration of undesirable substance vapors can be performed on the principle of using a greater inertia of the molecules of undesirable substances, as will be described for some embodiments below, or on the principle of using a larger size of the molecules of undesirable substances, for example, in the form of a selectively permeable membrane, passing only such molecules that are smaller than the molecules of undesirable substances.
- the proposed system allows to reduce the threshold sensitivity with respect to the vapor content of undesirable substances in the air sample to 1 - 10 9 g / cm or less.
- the air composition analyzer can be made in the form of a drift spectrometer to detect undesired substances in the form of explosive, poisonous and / or narcotic substances in the air sample.
- a drift spectrometer also called an ion mobility spectrometer
- a drift spectrometer means a gas analytical device for detecting vapors of explosive, poisonous and / or narcotic substances in air samples, the principle of which is based on the ionization of a continuous gas stream, separation of the formed microimpurity ions by their mobility in an electric field and detection of separated ions with the detection of the vapors of the above substances without identifying their type.
- the threshold sensitivity of existing drift spectrometers is from 1 - 10 "9 g / cm 3 or less under normal conditions, which allows us to determine the presence in the selected samples of undesirable substances at ppb level or less [Petrenko ES K assessment of the possibility of detection of explosives and devices containing them / Special equipment, 2001,? 4, s.16-20].
- the means of concentration of undesirable substances vapors can be made in the form of a channel for turning the air flow, while the sampling device is installed so as to take air samples immediately after the channel for turning the air flow in the part of the channel near its wall that is farthest from the center of rotation air flow i.e. to which, under the action of centrifugal force, the heavier molecules of most undesirable substances are discarded, which, correspondingly, increases the concentration of undesirable substances in this part of the channel, increasing the degree of probability of their detection.
- the means of concentration of undesirable substances vapors can be made in the form of an air flow swirl, in this case the sampling device of the air composition analyzer is installed behind the air flow swirl along the air flow so as to take air samples in the peripheral region of the swirl air flow. Heavier molecules of most unwanted substances under the influence of the centrifugal inertia force of the swirling air stream are discarded to the peripheral region of the air channel at the outlet of the air collector and, accordingly, the concentration of unwanted substances in this peripheral region increases, which increases the likelihood of their detection.
- the air flow swirl may be in the form of a cyclone swirl or an axial blade swirl.
- a cyclone dust collector i.e. apparatus for cleaning the dust-air mixture of solid fuel particles suspended in it under the action of centrifugal force, in which the dust-air mixture is fed into the cylindrical body tangentially to a circle or spiral.
- a cyclone dust collector i.e. apparatus for cleaning the dust-air mixture of solid fuel particles suspended in it under the action of centrifugal force, in which the dust-air mixture is fed into the cylindrical body tangentially to a circle or spiral.
- the system can be equipped with two or more air composition analyzers.
- Such a design for example, can increase the reliability of the system when one of the analyzers fails, or can be used if analyzers with a limited continuous operation time are used. In the latter case, the air composition analyzers used in the system can operate alternately at certain time intervals, due to the time limit for continuous operation of a particular model of the analyzer used.
- the system may further include suitable signaling means coupled to the control means to display the location of the controlled area in which the unwanted substance is located.
- the system can be relatively easily integrated into an existing building ventilation system, comprising at least an air manifold, a plurality of ducts and an exhaust device.
- the air composition analyzer of the system may additionally include a sensor for detecting substances or substances associated with fire in air samples, which extends the functionality of the system and allows it to be additionally used as a fire detection system.
- the outlet assembly of the air collector of the system for the detection of unwanted substances in controlled areas including an exhaust device configured to draw air from the space of the controlled areas through a variety of ducts connected to the air manifold, and an air collector in the direction to the outlet of the air collector, and a sampling device for the air composition analyzer.
- an assembly further includes a concentration means for increasing the concentration of vapors of undesirable substances in the part of the outlet channel of the air collector, while the sampling device is installed so as to take air samples in the part of the outlet channel of the air collector with an increased vapor concentration unwanted substances.
- the means of concentration of undesirable substances vapors can be made in the form of a channel for turning the air flow, while the sampling device is installed so as to take air samples immediately after the channel for turning the air flow in the part of the channel near its wall that is farthest from the center of rotation air flow.
- the means of concentration of undesirable substances vapors can be made in the form of an air flow swirl, in this case the sampling device of the air composition analyzer is installed behind the air flow swirl along the air flow so as to take air samples in the peripheral region of the swirl air flow.
- the air flow swirl can be made in the form of an axial blade swirl or a cyclone swirl, for example, in the form of a cyclone dust collector.
- a method for detecting and determining the location of unwanted substances in controlled areas comprising the steps of: taking air from controlled areas using a plurality of ducts; combining air taken from controlled areas in an air manifold; air sampling at the outlet of the air manifold; analysis of the composition of air samples taken; sequential or alternate closure or opening of air ducts after the detection of an undesirable substance as a result of analysis of the composition of a sampled air sample; and determining the controlled area in which the unwanted substance is located when an unwanted substance is detected as a result of analyzing the composition of the sampled air during sequential or alternate closing or opening of ducts.
- this method additionally includes the operation of concentration of undesirable substances vapors in the part of the outlet channel of the air collector, while the analysis of the composition of the air samples taken is carried out to determine the presence of undesirable substances vapors in them, air samples are taken in the part of the outlet channel of the air collector with an increased concentration of undesirable substances vapors.
- the composition of the air samples taken is analyzed for the presence of vapors of undesirable substances in them in the form of explosive, poisonous and / or narcotic substances.
- the concentration of undesired substances vapors in the part of the air collector outlet channel can be achieved by turning the air flow in it, while air sampling is carried out immediately after the air flow is turned in the part of the air collector outlet channel near its wall.
- the concentration of vapors of undesirable substances in the part of the outlet channel of the air collector can be achieved by swirling the air flow in it, while air sampling is carried out immediately after swirling the air flow in the peripheral region of the swirling air flow.
- figure 1 is a general view of a building in which a system for detecting and determining the location of unwanted substances according to an embodiment of the present invention is installed;
- FIG. 2 is a top view, partially cut away, of the cyclone chamber of the air manifold outlet assembly of the system shown in FIG. 1;
- FIG. 3 is a longitudinal sectional view of an air manifold outlet assembly according to another embodiment, namely, using air rotation channel and a selectively permeable membrane as means of concentration;
- Fig. 4 is a longitudinal sectional view of an air manifold outlet assembly according to yet another embodiment, namely using an axial blade swirler as a means of concentration.
- FIGS. 2-4 show the direction of air flow.
- a system for detecting and determining the location of unwanted substances in the controlled areas of the premises of building 1 contains: an air collector 2; a plurality of air ducts, including main air ducts 3, connecting the air collector 2 with air intake ducts 4 through the main electromagnetic shutters 5; inlet 6 air intake ducts 4, equipped with electromagnetic dampers; and an outlet assembly of the air manifold 2, including an exhaust fan 7 of suitable capacity, two drift spectrometers 8, an air sampling pipe 9, a cyclone chamber 10 and an output pipe 1 1.
- the system includes a controller (not shown) connected to both drift spectrometers 8 and electromagnets of the main electromagnetic shutters 5 and inlet shutters 6, as well as connected to suitable signaling devices that can display the location of the controlled area of building 1, in if vapors of unwanted substance are detected in its air.
- the outlet assembly of the air manifold 2 may include a sensor for detecting substances or substances associated with fire in air samples.
- FIG. 1 it can be created on the basis of the existing exhaust ventilation system of building 1, which contains at least an air manifold 2, many air ducts 3 and 4 with inlet openings b and an exhaust fan 7 by retrofitting it with the missing elements described above.
- an electromagnetic actuator can be used, as indicated above, but also any other well-known electromechanical actuators commonly used in duct systems, for example, exhaust ventilation.
- the air intake duct 4 can be equipped with two or more inlet openings b for individual rooms of the building 1, so the space inside one room can be divided into two or more controlled zones according to the number of inlets 6 in this room.
- drift spectrometer 8 can be used any of the known or manufactured drift spectrometers [see, for example, patent RU2293977C2, publ. 02/20/2007], capable of detecting vapors of explosive, poisonous and / or narcotic substances in the composition of an air sample at a concentration of NO of 9 g / cm 3 or less.
- the following models of drift spectrometers available on the market or their analogues can be used in the system: “Pilot-M” (USD; threshold sensitivity 1 - 10 "13 g / cm 3 ; analysis time 1, 5 s); “Trace”(USD; threshold sensitivity 1 - 10 "9 g / cm 3 ; analysis time 8 s); Sapan-1 (USD; threshold sensitivity 1 - 10 " g / cm; analysis time 5 s);” Saber 2000 “(Smiths Detection, Great Britain; threshold sensitivity 1 - 10 " 13 g / cm 3 ; analysis time 15 s); “Vapor Tracer 2" (GE Security, USA; threshold sensitivity 1 - 10 " g / cm; analysis time 5 s);” Quantum Sniffer QS-150 “(Implant Sciences Corp., USA; threshold sensitivity 1 - 10 " 13 g / cm 3 ; analysis time 15 s); “Ionscan -100” (Smiths Detection
- Such drift spectrometers are capable of responding to explosives such as trinitrotoluene, nitroglycerin, ethylene glycol dintrate, hexogen, octogen, pentaerythrotetranitrate and their composition, black powder, etc., for toxic substances such as organophosphorus, organochlorine compounds, aldehydes, alcohols, ketones, phenols, amines, mercaptans, amine Miac, etc., for narcotic substances such as amphetamine, ethamphetamine, cocaine, cannabinoids (hashish, marijuana), heroin, etc.
- explosives such as trinitrotoluene, nitroglycerin, ethylene glycol dintrate, hexogen, octogen, pentaerythrotetranitrate and their composition, black powder, etc.
- toxic substances such as organophosphorus, organochlorine compounds, aldehydes, alcohols, ketones, phenols, amines, mer
- the drift spectrometer provides an analysis time of several seconds or more
- two drift spectrometers 8 as illustrated in FIG.
- they can be adjusted so as to take air samples with a time shift relative to each other. For example, if you use the Sapsan-1 model in the system of the two aforementioned drift spectrometers, it is better to provide a time shift of 2.5 s.
- Such time demultiplexing will increase the speed of the system as a whole from 5 s to 2.5 s, while also increasing the reliability of the system.
- drift spectrometers instead of drift spectrometers, other types of air analyzers can be used in the system, for example, gas chromatographs [Petrenko ES On the assessment of the possibility of detecting explosives and devices containing them / Special equipment, 2001, N ° 4, p.16-20].
- the cyclone chamber 10 is connected tangentially to the channel of the air collector 2 and the air sampling pipe 9, and its central part from above is connected to the outlet pipe 1 1.
- the air sampling pipe 9 is located at a level slightly lower than the entry point into the cyclone chamber 10 of the air collector 2. This design is due to the fact that the molecules of explosive, poisonous and narcotic substances having a greater weight than molecules of air gases will be present in the lower part of the cyclone chamber 10 in greater concentration.
- the inlet end of the air sampling pipe 9 projects slightly into the cyclone chamber 10, i.e. somewhat distant from its cylindrical inner surface in order to reduce the ingress of solid particles contained in air and moving in a circle directly along the cylindrical inner surface of the cyclone chamber 10 due to the centrifugal during operation of the cyclone chamber 10.
- a conventional cyclone dust collector can also be used [see, for example, Ushakov S. G., Zverev N.I. Inertial dust separation. M .: Energy, 1974].
- a system will also perform the function of removing dust from the air of the controlled areas.
- the above-described system for detecting and determining the location of undesirable substances in the controlled areas of the premises of building 1 operates as follows.
- the controller controls the shutters 4 and 5 so that they are open.
- an exhaust fan 7 air from all controlled areas of the premises of building 1 is taken through the inlet 6, then the flows of sampled air through the air intake ducts 4 and the main ducts 3 are combined into a single stream in the air manifold 2, which enters the site the outlet of the air manifold 2, where it passes through the cyclone chamber 10, where most of it goes outside the building 1 through the outlet pipe 1 1, and a small part, in the form of air samples, is fed through the air sampling pipe 9 to the drift -from ektrometram 8 for analysis for the presence of undesirable pro- boom air vapors.
- the controller If at least one of the drift spectrometers 8 detects undesired substance vapors in the air samples, the controller, by the signal from this drift spectrometer 8, puts the system in search mode to determine the location of the controlled area of building 1, the air of which contains the detected undesirable substance vapors.
- the search mode can be carried out in various ways due to the simultaneous, sequential and / or sequential closing of the shutters 4 and 5.
- the controller first closes the main electromagnetic shutters 5 in turn, with each of the shutters being closed for a time that is not less than the time required for air to pass from the farthest from the inlet 6 to the drift spectrometers 8 and - denia analysis.
- the controller determines the air intake duct 4, through the inlet openings 6 of which an unwanted substance enters the system when none of the drift spectrometers 8 ceases to detect the presence of undesired substance vapors in the air samples, i.e. at the location of the shutter 5 closed at that time.
- the controller opens this shutter 5 and at the same time closes all the other main electromagnetic shutters 5, after which it closes the electromagnetic shutters of the inlet openings 6 one by one, determining the location of the inlet 6, through which an undesirable substance enters the system, in the same way as described for determining the air intake duct 4.
- the controller uses a means of alarm, etc.
- the controller first closes all the main electromagnetic shutters 5 and immediately after that begins to open each of these shutters 5 in turn for a time that is not less than the time required for the air to pass from the farthest from the inlet 6 of the air intake duct 4 corresponding to the open shutter 5, to the drift spectrometers 8 and analysis.
- the controller determines the air intake duct 4, through the inlet openings 6 of which an undesirable substance enters the system when at least one of the drift spectrometers 8 detects the presence of undesired substance vapors in the air samples, i.e. at the location of the damper open at that time 5.
- the controller opens each of the electromagnetic dampers of the inlet openings 6 of a certain air intake duct 4, determining the position of the inlet 6 through which undesirable substance enters the system .
- the cyclone chamber 10 performs the function of a means of concentration of vapors of undesirable substances, working as follows (see figure 2). Air is supplied to the cyclone chamber 10 from the air manifold 2 tangentially, most of the incoming air is discharged from the central part of the cyclone chamber 10 through the outlet pipe 1 1, and a small part of the incoming air is discharged tangentially from the peripheral part of the cyclone chamber 10 to drift spectrometers 8 through the air sampling pipe 9 as air samples for subsequent analysis. In this case, under the action of centrifugal force due to the tangential supply, air moves inside the cyclone chamber 10 in an ascending spiral.
- the present invention is not limited to such an embodiment of an agent for concentrating undesired substance vapors, and other agents may be used therein, some examples of which are given below.
- FIG. 3 shows another embodiment of the outlet assembly of the air manifold 2, where the channel for turning the air flow 12 is used as the main means of concentration of the vapors of unwanted substances.
- air sampling 9 is located immediately behind the channel for turning the air stream 12 in part of the channel of the outlet pipe 1 1 at its wall, which is farthest from the center of rotation of the air stream by the channel for turning the air stream 12, i.e. to which, under the action of centrifugal force, heavier molecules of most of the undesirable substances are discarded, which, accordingly, increases the concentration of undesirable substances in this part of the channel of the outlet pipe 1 1, increasing the degree of probability of their detection.
- An additional means of concentration of vapors of undesirable substances in the form of a membrane 13 is also used here.
- the membrane 13 is mounted inside the channel of the outlet pipe 1 1 immediately after the inlet end of the air sampling pipe 9 along the air stream so that it blocks the channel of the outlet pipe 1 1 only partially, namely at its wall that is farthest from the center of rotation of the air stream a channel for turning the air flow 12.
- the membrane 13 further increases the concentration of undesirable substances in the taken air samples.
- Figure 4 shows another embodiment of the outlet assembly of the air manifold 2, where an axial blade swirl 14 is used as a means of concentration of vapors of unwanted substances, which is installed in this example in the channel of the air manifold in front of its connection with the outlet pipe 1 1, while the input the end of the pipe air sampling 9 is placed in the channel in front of the outlet pipe 1 1 after its connection with the air collector 2 in the peripheral region of this channel.
- Heavier molecules of most undesirable substances under the action of the centrifugal inertia force of the air stream vortexed by the axial scapular swirler 14 are discarded to the peripheral region of the channel by the outlet pipe 1 1 and, accordingly, the concentration of undesirable substances in this peripheral region increases the central region of this channel, which increases the likelihood of detecting fumes of unwanted substances.
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- General Health & Medical Sciences (AREA)
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- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Le système proposé visant à détecter et à déterminer l'emplacement de substances non désirées dans des zones surveillées comprend un collecteur d'air (2), une pluralité de conduits d'air (3, 4) qui relient le collecteur d'air (2) aux zones surveillées d'un bâtiment (1), une pluralité de clapets (5, 6) pourvus de moyens d'ouverture et de fermeture, ces moyens étant ménagés dans les conduits d'air (3, 4), une unité d'évacuation du collecteur d'air (2) qui comprend un évent (7), un moyen de concentration (10) pour augmenter la concentration des vapeurs des substances non désirées dans une partie d'un canal d'évacuation du collecteur d'air (2), un analyseur (8) de la composition de l'air pourvu d'un dispositif de prélèvement d'échantillons (9) qui prélève des échantillons d'air dans une partie du canal ayant une concentration accrue de vapeurs de substances non désirées. Le système comprend également un moyen de commande qui est raccordé à l'analyseur (8) de la composition de l'air et aux moyens d'ouverture/fermeture des clapets (5, 6) de façon à fermer ou à ouvrir simultanément, successivement ou alternativement lesdits clapets (5, 6) et à déterminer une zone surveillée dans laquelle se trouve une substance non désirée en réponse à des signaux provenant de l'analyseur (8) de la composition de l'air. L'invention concerne également une unité d'évacuation d'un collecteur d'air (2) et un procédé de fonctionnement du système proposé.
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RU2011136302 | 2011-08-31 | ||
RU2011136302 | 2011-08-31 |
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WO2013032360A1 true WO2013032360A1 (fr) | 2013-03-07 |
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PCT/RU2012/000408 WO2013032360A1 (fr) | 2011-08-31 | 2012-05-22 | Procédé et système de détection et de détermination de l'emplacement de substances non désirées dans des zones surveillées et unité d'évacuation d'un collecteur d'air pour ce système |
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Cited By (3)
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RU2567842C1 (ru) * | 2014-10-27 | 2015-11-10 | Федеральное государственное бюджетное учреждение "Всероссийский научно-исследовательский институт по проблемам гражданской обороны и чрезвычайных ситуаций МЧС России" (федеральный центр науки и высоких технологий) | Способ комплексной обработки объектов с использованием комбинированного индикаторного состава для обработки помещений после террористических актов |
CN114047304A (zh) * | 2022-01-12 | 2022-02-15 | 深圳星普森信息技术有限公司 | 新风系统空气检测方法及装置 |
US11754309B2 (en) | 2020-06-30 | 2023-09-12 | Accenture Global Solutions Limited | Pathogen sensing filters |
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