CN101663693A - Improved ignition-source detecting system and associated methods - Google Patents
Improved ignition-source detecting system and associated methods Download PDFInfo
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Abstract
A system of ignition-source detection and prevention in containers and open materials handling systems. The system includes an electronic processor located in close proximity to a detector, a spray nozzle, and a valve. The electronic processor may be configured to be placed in a dust-hazard environment. The detector may be configured to detect radiation and/or a flame. Associate methods are also disclosed, including: a method of responding to an ignition source, a method of installing an ignition-source detection system, and a method of testing an ignition-source detection system.
Description
The cross reference of related application
It is the U.S. Provisional Application number 60/900 of " IMPROVED IGNITION-SOURCE DETECTING SYSTEM ANDASSOCIATED METHODS " that the application requires by the title that Povl Hansen and Geoff Brazier submitted on February 13rd, 2007,970 interests, its disclosure is here specially incorporated into by reference.The application also requires the title submitted on February 14th, 2007 by Povl Hansen and GeoffBrazier to be the U.S. Provisional Application of " IMPROVEDIGNITION-SOURCE DETECTING SYSTEM AND ASSOCIATEDMETHODS " number 60/901,087 interests, its disclosure is here specially incorporated into by reference.
Technical field
The present invention relates to the system of ignition-source detection (ignition-source detection) and prevention.More specifically, the present invention relates to potential ignition source and open material handling system (open materials handling system) in the exploration vessel.
Background technology
In the container of closing, find Ignition sources, for example during the fritter of spark, ashes, heat treatment material or heating of metal, may cause fire or blast.For example, dust explosion is relative general in various industries with fire.In order to cause such blast, Ignition sources produces and is dispersed in the fuel to explode in the container, as fine dust particles.Dust explosion may appear in the various containers, comprises particle collector, air strainer, air conveyer, delivery pipe, pipeline and other enclosure space that runs in industrial site usually.
Ignition sources can be produced by the industry or the manufacturing process that for example appear at fire or place, blast place.Grinding, cutting, welding operation and static discharge are together with a lot of other operations can cause igniting in the container spark or the ashes of suspended particle.
Ignition sources can be by for example transporter generation of material handling system, and material handling system may be sealing or open to the discrete material that moves in the atmosphere, and these discrete materials may comprise the hot material from a technology to storing spot.
Conventional ignition-source detection systems is general uses the one or more detectors that are connected to central control unit, and central control unit is arranged in for example pulpit of manufacturing equipment.Control module generally is connected to one or more valves or another release mechanism such as cross-over valve, and described one or more valves are used to control water, carbon dioxide, be intended to prevent the release of another fluid of igniting.
Conventional ignition-source detection systems is generally used the controller and the watch-dog of combination, and rigid line is got back to this assembled unit from each detector and nozzle (or miscellaneous equipment) extension.Such system has the limited capacity that can support the application of how many ignition-source detection activity about them.Frequently, the tie point that is included in the limited quantity in the conventional ignition-source detection hardware has limited the ability of the ignition-source detection point being added to technology.When this occurred, the controller of combination must replace with the unit of larger capacity or the autonomous system of separating with watch-dog.Mode whatsoever, the controller of combination and watch-dog have all limited dirigibility.Generally, conventional ignition-source detection systems is limited between 4 and 16 survey and extinguish a little.
It is very expensive that extension is connected to the necessary electric wire of control module (wire) with detector.And electromagnetic radiation, temperature contrast and other factors may endanger the communication between control module and attached sensors and the nozzle.Therefore, need to test and safeguard that electric wire is to guarantee the true(-)running of ignition-source detecting system.Costliness is installed, tests and safeguarded to the necessary electric wire of such legacy system.
The control module of conventional ignition-source detection systems depends on machinery or solid-state relay and discerns and resist Ignition sources in the container.Change or customize such control module and need give its building block rewiring.Therefore, the Electronic Design of the strictness of conventional ignition-source detection systems has hindered customization, and causes expense that increases and the application flexibility that reduces.
In conventional ignition-source detection systems, control module is arranged in the position away from monitored container.Generally, control module resides in the position of weather control, to prevent to be exposed to temperature and many dirt condition of fluctuation.For example, conventional ignition-source detection systems generally need make the controller of combination and watch-dog be in low danger level dirty environment for example in ATEX Zone 22, Class 2 Division 2 or the nonrated environment (unrated environment).
Generally, the controller of single combination and watch-dog are connected to conventional ignition-source detection systems.This forces all control and monitor activities to occur in generally to be positioned on the position away from monitored container.
Be used for preventing the cold climate that ignites at water, conventional ignition-source detection systems comprises companion's heater circuit (heat tracing circuit), does not freeze to guarantee water.Such companion's heater circuit generally makes electricity consumption produce necessary heat.By convention, ignition-source detecting system is not monitored electricity and is fed to such companion's heater circuit.
The detector that is included in the conventional ignition-source detection systems can not produce the Direct Digital signal in response to observed infrared radiation.Therefore, such detector is exported simulating signal or is needed analog to digital converter to communicate by letter with digital control system.Simulating signal can be exported variable voltage or electric current in response to the radiation level of being surveyed.Simulating signal then must controlled device be resolved, to determine suitable system responses.
Detector in the conventional ignition-source detection systems generally is not configured to survey flame.Alternatively, legacy system only concentrates on and surveys spark and ashes.Flame detecting is processed in the mode that is different from the detection of spark and ashes in history.Survey the degree of flame and spark and ashes to conventional ignition-source detection systems, they comprise and are used to survey flame and the detector that separates that is used to survey other Ignition sources.
Conventional detectors does not allow sensitivity adjustment.They need be calibrated before installing, or can not be conditioned at all.Before using or installing, afterwards or during to allow sensitivity adjustment be desirable.
Being provided for strengthening conventional ignition-source detection systems is desirable with the system and method that overcomes above-mentioned restriction.
Summary of the invention
The system that meets an embodiment of the present disclosure provides a kind of ignition-source detecting system that comprises electronic processors and detector.Radiation in the detector exploration vessel of this ignition-source detecting system.Electronic processors is positioned at and is in close proximity to container and detector part.
According to another embodiment, the method that ignition-source detecting system is installed comprises electronic processors is positioned at and is in close proximity to the container part.Detector is installed on the container.Detector configuration becomes the radiation in the exploration vessel.Electronic processors is connected by industrial siding with detector.
In another embodiment, ignition-source detecting system comprises detector that is used for probe radiation and the electronic processors that is used to control ignition-source detecting system.According to this embodiment, electronic processors becomes to be positioned at ATEX Zone 21 or Class 2Division 1 position with probe designs.
According to further embodiment, comprise the radiation source in the exploration vessel and send digital signal to electronic processors in response to the method for Ignition sources.Electronic processors is positioned at and is in close proximity to the container part.This method comprises signal is sent to valve and driver's valve with by the nozzle release fluids from electronic processors.
In another embodiment, the method for test ignition-source detecting system comprises from light emitting diode (LED) generation first test signal.LED and detection junction integrator.This method also is included in detector and surveys first test signal, sends secondary signal to processor, and ignores secondary signal.
Should be understood that aforementioned general description and following detailed only are exemplary and indicative, rather than to the restriction of the invention that is required right.
The accompanying drawing that merges in this manual and form the part of instructions shows some embodiments that meet the present invention and description, is used to explain principle of the present invention.
Description of drawings
Fig. 1 is the synoptic diagram according to the ignition-source detecting system of illustrative embodiments.
Fig. 2 is the synoptic diagram according to two ignition-source detecting systems of illustrative embodiments.
Fig. 3 is the process flow diagram of installation according to the method for the ignition-source detecting system of illustrative embodiments.
Fig. 4 is the skeleton view that is used in according to the electronic processors in the ignition-source detecting system of illustrative embodiments.
Fig. 5 is mounted in the diagram of the detector on the container, and this detector is used in the illustrative embodiments of ignition-source detecting system.
Fig. 6 is the skeleton view that is configured to be installed in the detector in container distally, and this detector is used in the illustrative embodiments of ignition-source detecting system.
Fig. 7 is the diagram that is suitable for use in the keyboard of the electronic processors in the illustrative embodiments of ignition-source detecting system.
Embodiment
Now will be in detail with reference to illustrative embodiments according to the invention, embodiment is illustrated by accompanying drawing.
Fig. 1 illustrates exemplary ignition-source detecting system 100.Ignition-source detecting system shown in Fig. 1 comprises electronic processors 10, first detector 21, second detector 22, nozzle 30 and valve 31. Detector 21,22 is directly installed on the container C that comprises particle P.Electronic processors 10 also can be connected to watch-dog 60, audible alarm 51 and visible alarm 52.Though two detectors 21,22 only are shown in Fig. 1, and other embodiment of system can comprise the detector of any right quantity.Comprise that at ignition-source detecting system 100 each detector can be used as independently module operation in the embodiment of two or more detectors 21,22.In this embodiment, if in ignition- source detection device 21 or 22 is out of order, then this fault does not influence other ignition-source detection device in the system 100.
Though in Fig. 1, detector 21 and 22 is shown on the common circular duct toward each other, in other embodiments, they can be mounted to and not be in diametric(al) toward each other.In one embodiment, detector 21 and 22 can be mounted to axle along container C each other at a distance of about 20 centimetres/8 inches.In another embodiment, detector 21 and 22 can be installed on the radius of container C, and described radius has the little angle of about 160 degree between two detectors 21,22, so that the sensitivity of particle P in the maximization container C.
In the operating period of ignition-source detecting system 100, electronic processors 10 sends signal to other system unit that comprises detector 21 and 22, and from these parts received signals.In one embodiment, electronic processors can provide electric power to detector 21,22.In another embodiment, any in the detector 21 and 22 or two can send different signals in several mode of operations each.Mode of operation can comprise: (1) normal mode of operation, (2) system failure, the radiation source that (3) are identified, and (4) Ignition sources of being identified.The system failure can comprise inactivity state or off state.
If any in detector 21 or 22 or two detect the radiation that meets Ignition sources, then any in the detector 21,22 or two can make the decision-making that hazard event has appearred in identification to processor 10, and send signals can correspondingly for electronic processors 10.In one embodiment, electronic processors 10 is not handled original opto-electronic response data or whether simple simulating signal hazard event occurred to resolve; More properly, exclusively make the decision-making that hazard event whether occurred at one or more detectors 21,22.In one embodiment, any in detector 21 or 22 or two detect before the radiation that meets Ignition sources, and any in the detector 21 or 22 or two send signals to electronic processors 10.In detector 21 or 22 any or two detect after the radiation that meets Ignition sources, and secondary signal can be sent to electronic processors 10.
In another embodiment, electronic processors 10 can provide power to detector 21 and 22 at a voltage place, and this voltage is modulated between high voltage and low-voltage with the time interval of of short duration and normal control.During normal running conditions, processor 10 can receive the voltage with normal modulation and hold fire.When any or two in detector 21 or 22 detect radiation, any in the detector 21 or 22 or two decision-makings that can make the duration of revising high voltage or low-voltage.Electronic processors 10 can be configured to this modification is resolved to the existence of indication radiation source.In another embodiment, the duration of high voltage or low-voltage can prolong the time of a period of time that is detected corresponding to radiation source.According to this embodiment, when electronic processors 10 only can be configured in the threshold time amount detected radiation source in response to the radiation source that is detected.In another embodiment, modulation voltage can be taked the form of common square wave.According to this embodiment, can minimize the time quantum between high voltage and the low-voltage.Provide the embodiment of modulation voltage can allow electronic processors 10 to make decision-making faster in response to the detection of radiation with the form of common square wave.
Be configured to signal in the embodiment that valve 31 opens at electronic processors 10, nozzle 30 can be placed on the downstream of detector 21,22 on the direction of stream F.Distance between nozzle 30 and the detector 21,22 can be depending on the response time of system, and the response time is the detection of radiation source and the time between the injection S, sprays S and is released by opening of valve 31, is established on the entire cross section of container C.According to an embodiment of system, the response time is between 160 milliseconds and 250 milliseconds.At pressure of supply water is in the embodiment of 100psi/7bar, injected protection in the delivery pipe of one meter 40 inch diameter begin in the detection from radiation source 200 milliseconds.At pressure of supply water is in another embodiment of 100psi/7bar, injected protection in the delivery pipe of one meter 40 inch diameter begin in the detection from radiation source 180 milliseconds.At pressure of supply water is in the another embodiment of 100psi/7bar, injected protection in the delivery pipe of one meter 40 inch diameter begin in the detection from radiation source 160 milliseconds.
Container C can be any container or enclosure space, for example particle collector, air strainer, air conveyer, delivery pipe, pipeline etc.Particle P can comprise the dust from industry or agriculture application examples such as metal processing, wood working, manufacturing process or grain storage.In some applications, particle P can move on flow direction F by container C.
As mentioned above, can detector 21,22 be installed on the container C by making detector can detect the mode of any possible radiation that Ignition sources discharged in the container C.
Ignition-source detecting system 100 also can be applicable to evolution formula disposal system, and for example detector 21,22 is mounted to the conveyor of measuring the stream of crossing the discrete material that moves in its visual field.
In one embodiment, each detector 21,22 can be connected to the outside of container C by locator adapter 23, and locator adapter 23 separates the inside with container C, the outside of container C.According to embodiment shown in Figure 5, each detector 21,22 is positioned on the outside of the container C with locator adapter 23.In this embodiment, locator adapter 23 keeps in position with ring 24 and nut 25.Yet, can use any suitable method that connects locator adapter.In some cases, may wish to make detector 21,22 to be positioned at the distally on the surface of container C.Therefore, in an embodiment shown in Figure 6, system can comprise two optical fiber adapters 26 that connect locator adapter 23 and distal detector 21 or 22 by optical fiber 27.Adapter 23 can comprise the window (not shown) of being made by sapphire glass or other scratch resistance and optically transparent material.These windows are guaranteed neither one particle P effusion container C, the clearly view of the inside of container C are provided for simultaneously detector 21,22.In one embodiment, detector 21 and 22 can be rated for use in electric explosive area, and window provides safety curtain for detector 21,22.In another embodiment, use is left-handed installs these adapters with right-hand thread.Use dextrorotation and left-handed screw to avoid be threaded careless to unclamp, fix another simultaneously as possible.At last, the adapter that detector 21,22 is installed above can comprise whole air purification groove (not shown), removes from the processing side of window with the particle that will gather.
In one embodiment, detector 21,22 can be pushed into cooperation in position, thereby allows the simple of impaired detector to change continuously, and ignition-source detecting system 100 keeps working simultaneously.By this way, the replacing of detector is not interrupted particle P and is passed through flowing of container C, because lower floor's adapter is kept the sealing of container C.In another embodiment, can detector 21,22 be installed by the flange and the clamp device that use health.
Before using or installing, afterwards or during, can regulate detector 21,22 at sensitivity.This ability allows detector to be calibrated 21,22 to survey usually the low temperature hot material of the invisible but still particle P that can ignite in conventional ignition-source detection systems.Detector 21,22 is exported the Direct Digital signal when the radiation that detects preselected wavelength.According to an embodiment of system, detector 21,22 can be configured to the radiation in the infrared part of detecting light spectrum.Another embodiment can comprise the detector that is configured to survey UV radiation, temperature, gas characteristic and motion, and gas characteristic comprises the content of gas componant, oxygen concentration, carbonomonoxide concentration and dangerous tracer gas.In some configurations, detector 21,22 may be surveyed the radiation in two or more different wavelength coverages.The scope of selecting for detector 21,22 can but needn't be overlapping.
In one embodiment, each detector 21,22 can be launched periodic test signal from light emitting diode (LED), and this light emitting diode can be whole to detector.By launching this test signal, detector 21,22 allows ignition-source detecting system 100 to carry out optics and testing circuit inspection.In one embodiment, LED launches light in the very short time, and this time is less than the time of light-emitting particles through the detector in the container C.Electronic processors is ignored this test signal, guarantees not have fluid to discharge from nozzle 30.Therefore, this selftest does not influence the effect of system.Have in the embodiment in the overlapping visual field at detector 21 and 22, overlappingly guarantee that a detector can continue monitoring of containers, and another carries out optics and testing circuit inspection.
Splicing ear 15 can be connected to electronic processors 10 other parts that are included in the ignition-source detecting system 100.Especially, splicing ear 15 can accept to extend to the dedicated wires of detector 21,22, valve 31, audible alarm 51 and visible alarm 52.In one embodiment, data cable is connected splicing ear 15 with watch-dog 60, to allow to use communication bus.If desired, any one in these parts can from based on the communication Protocol Conversion of electric wire to the communication protocol of utilizing communication bus based on cable.In addition, the communication between watch-dog 60 and the electronic processors 10 can be wireless.In another embodiment, splicing ear 15 can be connected to for example DCS of central control system, thereby allows long distance control system 100.No matter based on electric wire, based on cable still is wireless, the communication between watch-dog 60 and the electronic processors 10 all can be taked the form of the combination of discrete digital massage, simulated data or numeral and simulated data.
In one embodiment, electronic processors 10 is installed by on-the-spot.In other words, electronic processors 10 can be positioned at and be in close proximity to container C, detector 21,22, valve 31 and nozzle 30 parts.In one embodiment, electronic processors 10 can be installed in the hazardous environment identical with container C, detector 21,22, valve 31 and nozzle 30.Identical hazardous environment can be and is classified as following environment: ATEX Zone 21 or ATEX Zone 22; ATEX Zone 1 or ATEX Zone 2; Or NEC class C2D1, NEC class C2D2, NEC class C1D1 or NEC class C1D2.In another embodiment, electronic processors 10 can be installed on the container C or be adjacent with container C.This is extremely near ignition-source detecting system 100 and the legacy system that generally comprises the control system of installing in central authorities are distinguished.Electronic processors 10 is installed in is in close proximity to the bee-line that other system unit part provides wiring between parts, reduced its risk that is cut or damages.The length that minimizes the electric wire between the parts of ignition-source detecting system 100 has also reduced installation cost easily by using less material and making to install.
In some embodiments, pilot lamp 12 can comprise light emitting diode (LED).Use this configuration, can use color coding (green=" OK "/red=" alarm ") that operating personnel are understood easily.Though single pilot lamp 12 shown in Figure 1, some embodiments can comprise as the part of keyboard 11 or be arranged in a plurality of pilot lamp on the electronic processors 10 discretely.In embodiment shown in Figure 7, whether for example, keyboard 11 comprises and is configured to indicate down a plurality of LED 86 that list: in a plurality of detectors 81 any one triggered alarm, primary power state 82, standby power supply state 83, water supply status 84 and accompany hot state 85.In addition, keyboard 11 can comprise a plurality of LED87 that are configured to indicate whether detect fault in any one of a plurality of detectors 81.
When electronic processors was used as unique system monitor, the local monitor of electronic processors 10 may be desirable especially.Therefore, an embodiment provides the simple user interface, to accept user's input on keyboard 11.In one embodiment, user's input is finished by two switches 88 and 89.First switch 88 is used in manual test system any time, and be used in start or the system state alarm be corrected after reset system.Second switch 89 can be used for making alarm silence or cancellation alarm.In another embodiment, switch 88 and 89 is only switches on the user interface of keyboard 11.
In order to reduce and the relevant cost of on-the-spot installation, electronic processors 10 can have compact appearance.And electronic processors 10 can have modular design, thereby allows it to manage a plurality of detectors 21,22 and a plurality of nozzle 30.In some embodiments, may only need an electronic processors 10 to support single or multiple point of applications.
When Ignition sources was detected, electronic processors 10 can be used for triggering various measures.Fig. 1 illustrates the system that comprises nozzle 30, and nozzle 30 discharges and is used to the fluid that stops to ignite.Yet, except such nozzle 30 or replace nozzle 30, electronic processors 10 may command cross-over valves, fire prevention system, pass closed procedure or quick closing valve.
Particularly, electronic processors 10 can comprise microprocessor, thereby guarantees fast response time and allow customization ignition-source detecting system 100.By giving electronic processors 10 programmings again, for example the user can be provided with result, alarm setting point and other parameter of expectation.Program design can realize by keyboard 11 and/or change-over switch 16, maybe may need the reprogramming of electronic processors 10 to come to specify new function to some keyboard 11 and change-over switch 16.
Different with ignition-source detecting system 100, the control module in the conventional ignition-source detection systems depends on machinery or solid-state relay is handled the signal that receives from detector.The Electronic Design that is included in the strictness in traditional control module has seriously limited the ability of change or customize system operation.In fact, its included relay need be regulated or change to legacy system by its change logic of operating.Yet in ignition-source detecting system 100, electronic processors 10 can not dispose relay.Therefore, the supplier of ignition-source detecting system can revise the mode of electronic processors 10 operations easily, and the user can revise the mode of ignition-source detecting system 100 operations easily.
The same with detector 21,22, electronic processors 10 can be configured to be installed in dust-hazard environment for example in " ATEX Zone 21 " or " NEC class 2Division 1 " environment.This allows electronic processors 10 to be installed in other parts part that is in close proximity to ignition-source detecting system 100, thereby has reduced the chance of unconscious signal interruption and reduced installation cost.On the other hand, conventional ignition-source detection systems controller that generally need make up and watch-dog are in low danger level dust atmosphere for example in " ATEX Zone 22 ", " NEC class 2Division 2 " or the nonrated environment.
During operation, electronic processors 10 can comprise programmable two-level alarm structure.Especially, electronic processors 10 can be initiated local alarm at electronic processors at every turn when detecting possible Ignition sources.Yet if electronic processors 10 detects a series of Ignition sources, it can initiate local alarm and process shut-off circuit.The programmability of electronic processors 10 allows the user at this monitored process or this second-level alarm of application fine tuning, to avoid unnecessary closing.In an embodiment of system, second-level alarm can be by fine tuning, if to comprise time threshold-continue to detect Ignition sources in the duration of time threshold, then will trigger second-level alarm.
If ignition-source detecting system 100 comprises independently-powered companion's heater circuit 42, then electronic processors 10 can be monitored the flowing of electricity of companion's heater circuit.The ignition-source detecting system that uses in cold climate generally comprises companion's heater circuit, and if use water spray system, comprise also that then heat guard freezes preventing.Such tracing system comprises having high-resistance relatively electric wire, and electric wire is configured to produce heat when electricity is mobile by it.Be wrapped in around the parts that carry water by the electric wire with tracing system, tracing system can prevent water freezing.41 loses electrical power just produce alarm if electronic processors 10 can be configured to tracing system.
In one embodiment, electronic processors 10 comprises whole standby power supply, thereby ignition-source detecting system 100 can fully be moved.By this way, temporary transient power fail will not produce the fragility to fire or blast.According to an embodiment shown in Figure 4, whole standby power supply can comprise the battery (not shown).Battery tray 13 keeps battery, and battery seat board 14 is fixed on Battery and battery holder 13 in the control module housing 10.
Fig. 2 is illustrated in two the identical ignition-source detecting systems 100,200 that link together in the network.Each ignition-source detecting system 100,200 comprises electronic processors 10, detector 21 and 22, nozzle 30 and valve 31.Two ignition-source detecting systems 100,200 are shared common monitoring device 60, audible alarm 51 and visible alarm 52. Data cable 70,71,72 and 73 is connected to these parts with ignition-source detecting system 100,200.
Though ignition-source detecting system 100,200 communicates with one another, each as unit independently in system level operation.If one in the ignition-source detecting system 100,200 is out of order, this fault does not influence the ignition-source detecting system on the network.For each ignition-source detecting system 100,200, can make all system decision-makings at the electronic processors 10 of this system rather than at central controller.
In one embodiment, communication bus for example CAN bus interface connection allows each electronic processors 10 to communicate by letter with other ignition-source detecting system and/or central monitor, as shown in Figure 2.The CAN bus is " freeware " communication protocol, but other proprietary protocol can merge in the ignition-source detecting system 100,200.
Use communication bus to allow individual data cable 70 that ignition-source detecting system 100,200 is linked together.Though Fig. 2 only illustrates two ignition-source detecting systems 100,200, the user can add extra system voluntarily.
Communication bus allows single central monitor 60 by individual data cable 71 and ignition-source detecting system 100,200 communications that all are connected.When extra ignition-source detecting system was added, central monitor 60 can be surveyed them automatically.The user is the address of the new ignition-source detecting system that adds of input then, thus the information that allows watch-dog 60 to show about the system of new interpolation.Watch-dog 60 can provide and comprise the information of lising down: the output of visible alarm and indicating fault, data and current status and the operation of menu-guided.In addition, watch-dog 60 can provide the interface of the alert consitions that allows cancellation electronic processors 10.Watch-dog 60 also can produce the data recording of system event or provide remote alarm by the modulator-demodular unit connection.
Different with the conventional ignition-source detection systems of controller that uses combination and watch-dog, wherein rigid line is got back to this assembled unit from each detector and nozzle (or miscellaneous equipment) extension, and configuration shown in Figure 2 comprises a plurality of electronic processors 10.In these electronic processors 10 each all uses bus system to be connected to outside or remote monitor 60.The danger of complicacy, expense and many electric wires has been avoided in this configuration.
Conventional ignition-source detection systems generally depends on the central controller with a small amount of tie point, thereby has limited the ability of the ignition-source detection point of expectation being added to container or process.A plurality of independently ignition-source detecting systems that use connects by communication bus, for example ignition-source detecting system 100,200, avoided this problem.As shown in Figure 2, a plurality of ignition-source detecting systems can be connected to watch-dog 60, thereby add sensing point on demand.In some configurations, can be above 1000 independent ignition-source detecting system to watch-dog 60 reports.And, if desired, extra remote monitor can be added to identical bus link.
A plurality of watch-dogs can be connected to identical a plurality of system data cables.If desired, use a plurality of watch-dogs to make the user can visit system information at the diverse location place.The user may for example wish to visit near and away from the system information of the position of monitored container.Use a plurality of watch-dogs to allow such configuration.
Alternatively, use axle spoke formula configuration (hub-and-spoke configuration) can realize CSRC.In such configuration, central monitor is directly connected to a plurality of ignition-source detecting systems.Each ignition-source detecting system all has its oneself the dedicated communications cable that it is connected with central monitor.
Fig. 3 illustrates the illustrative methods that ignition-source detecting system is installed.The method comprising the steps of: electronic processors is positioned at is in close proximity to the container part; Detector is installed on the container or near; Nozzle is installed on the container; To be used to control fluid and be installed to container to the valve of the flow of nozzle; And by dedicated communications cable connection electronic processors, detector and valve.
Step 510 comprises electronic processors is positioned at and is in close proximity to the container part.As discussed above, electronic processors is installed in be in close proximity to ignition-source detecting system with the monitoring the container part reduced the quantity of finishing the necessary electric wire and cable of system.This has reduced cost again and has strengthened system reliability.Therefore, step 510 also can comprise the position that electronic processors is positioned at the distance between minimizing processor, detector and the valve.In certain methods, electronic processors physically is installed on the container, has further limited the needs of required connection electric wire.
Installation steps 510 can comprise electronic processors is installed in the dust-hazard environment.In such method, electronic processors is configured to operate in dust-hazard environment especially.This may need specific test and design decision.
Installation steps 510 can comprise further that setting is arranged in the change-over switch on the electronic processors, with the configuration ignition-source detecting system.Change-over switch is set can programme to ignition-source detecting system by the desired mode of user.For example, the user can be provided with change-over switch, will trigger the wavelength of the radiation of alarm with adjusting, or changes the sensitivity of system before alarm is closed in generation, or the quantity of the detector that works in the recognition system 100.
Can merge timer with duration of allowing quantity, the needed radiation observation of triggering system warning horn or after surveying and before the release firing-fighting medium, answer elapsed time to come Adjustment System about the firing-fighting medium that is discharged.
Next step-the step 520 of method 500 comprises detector is installed on the container.Container can be arranged in dust-hazard environment once more, needs selection or the enough durable detector of design to resist home environment.Step 520 can comprise that also the configuration detector surveys radiation in the presetted wavelength scope.
Then, in step 530, this method requires nozzle is installed on the container.Nozzle can be configured to spray a fluid in the container.Fluid can be water, carbon dioxide or is used to prevent that particle matter from igniting or extinguish after igniting another fluid of the flame that produces.
Step 540 comprises and is installed in container with being used to control the valve of fluid to the flow of nozzle.Valve can be selected to the electronic signal that receives in response to from electronic processors.
At last, step 550 comprises by dedicated communications cable connection electronic processors, detector and valve.In one embodiment, the total length of the telecommunication cable between these parts is minimized.
Method 500 can comprise also by dedicated communications cable watch-dog is connected to the step of electronic processors that watch-dog is far from container.In one embodiment, can use communication bus to connect, as describing in conjunction with ignition-source detecting system above-mentioned.This allows the user in the detection of monitoring Ignition sources away from the distance of container.The user also can be connected to second electronic processors with electronic processors by communication bus.
To those skilled in the art clearly, can carry out various changes and variation in exemplary means of Xie Shiing and the method in the above, and not depart from the scope of the present disclosure or essence.
From the practice of the consideration of instructions and system disclosed herein, meet other embodiment of the present disclosure clearly to those skilled in the art.Be intended that instructions and embodiment and be regarded as merely exemplary, true scope of the present disclosure and essence are indicated by following claim.
Claims (55)
1. ignition-source detecting system comprises:
Electronic processors, it is configured to control described ignition-source detecting system; And
At least one detector, it is configured to the radiation in the exploration vessel, and described electronic processors is positioned at and is in close proximity to described container and described detector part.
2. ignition-source detecting system as claimed in claim 1 further comprises:
At least one nozzle, it is configured to release fluids; And
At least one valve, it is configured to control the flow of described fluid to described nozzle in response to the signal that receives from described electronic processors.
3. ignition-source detecting system as claimed in claim 1, wherein, described electronic processors is installed on the described container.
4. ignition-source detecting system as claimed in claim 1, wherein, described electronic processors can be programmed.
5. ignition-source detecting system as claimed in claim 1, wherein, described electronic processors does not comprise machinery or solid-state relay.
6. ignition-source detecting system as claimed in claim 1, wherein, described electronic processors comprises the change-over switch that is used to dispose described ignition-source detecting system.
7. ignition-source detecting system as claimed in claim 1, wherein, described electronic processors comprises communication bus.
8. ignition-source detecting system as claimed in claim 7, wherein
Described ignition-source detecting system is first ignition-source detecting system; And
The electronic processors of described first ignition-source detecting system communicates by described communication bus and remote monitor.
9. ignition-source detecting system as claimed in claim 8, wherein, described remote monitor is configured to carry out at least one in the following function: indicate the state of described electronic processors, the alert consitions of the described electronic processors of cancellation, and write down the data that described electronic processors produces.
10. ignition-source detecting system as claimed in claim 8, wherein, a plurality of ignition-source detecting systems and described remote monitor communicate, and described watch-dog is configured to show from one in the described ignition-source detecting system or whole information.
11. ignition-source detecting system as claimed in claim 8, wherein, described watch-dog communicates by the described electronic processors of first private cable and described first ignition-source detecting system, and does not have intervenient parts; And
Described watch-dog communicates by the electronic processors of described first private cable and second ignition-source detecting system.
12. ignition-source detecting system as claimed in claim 8, wherein, the described electronic processors of described first ignition-source detecting system communicates by the electronic processors of the private cable and second ignition-source detecting system, and does not have intervenient parts.
13. ignition-source detecting system as claimed in claim 2, wherein
Described container has upstream portion and downstream part;
Described at least one detector is positioned at the described upstream portion of described container; And
Described at least one nozzle is positioned at the described downstream part of described container.
14. ignition-source detecting system as claimed in claim 1 further comprises:
Keyboard, it is installed on the described electronic processors.
15. ignition-source detecting system as claimed in claim 14, wherein
Described keyboard comprises first switch and second switch;
Described first switch is configured to initiate the test or the replacement of described system; And
Described second switch is configured to make the alarm silence of described system triggers or cancels described alarm.
16. ignition-source detecting system as claimed in claim 1, wherein, described at least one detector further is configured to survey flame.
17. ignition-source detecting system as claimed in claim 15 further comprises the equipment that is configured to knock down the flame.
18. ignition-source detecting system as claimed in claim 1, wherein, the radiation in the container is one of infrared radiation or UV radiation.
19. ignition-source detecting system as claimed in claim 1, wherein, described at least one detector configuration becomes at least one in detecting temperature, gas characteristic and the motion.
20. ignition-source detecting system as claimed in claim 1, wherein, described electronic processors is configured to be arranged in the hazardous environment.
21. ignition-source detecting system as claimed in claim 20, wherein, described hazardous environment is defined as down one of lising: ATEX Zone 21 or ATEX Zone 22; ATEX Zone 1 or ATEX Zone 2; Or NEC class C2D1, NEC class C2D2, NEC class C1D1 or NEC class C1D2.
22. ignition-source detecting system as claimed in claim 1, wherein, described at least one detector can be before using or installing, afterwards or during be conditioned at sensitivity.
23. ignition-source detecting system as claimed in claim 1, wherein, described at least one detector configuration becomes to survey the radiation that the low temperature hot material is discharged.
24. ignition-source detecting system as claimed in claim 1, wherein, described at least one detector is first detector, and described ignition-source detecting system further comprises second detector.
25. ignition-source detecting system as claimed in claim 24, wherein
Described first detector configuration becomes to survey the radiation with first wavelength coverage;
Described second detector configuration becomes to survey the radiation with second wavelength coverage; And
Described first wavelength coverage is different with second wavelength coverage.
26. ignition-source detecting system as claimed in claim 25, wherein, described first wavelength coverage and second wavelength coverage overlap.
27. ignition-source detecting system as claimed in claim 1, wherein, described at least one detector configuration becomes to export the Direct Digital signal after detecting radiation.
28. ignition-source detecting system as claimed in claim 27, wherein, described Direct Digital signal is first digital signal, and described at least one detector configuration becomes output second digital signal before detecting radiation.
29. ignition-source detecting system as claimed in claim 28, wherein, described at least one detector configuration becomes to export three digital signal after detecting the system failure.
30. ignition-source detecting system as claimed in claim 1, wherein, described at least one detector configuration becomes the output modulation voltage, and described modulation voltage has high voltage and low-voltage.
31. ignition-source detecting system as claimed in claim 30, wherein
Described high voltage had for first duration;
Described low-voltage had for second duration; And
Described at least one detector configuration becomes to prolong described first duration or described second duration when detecting radiation in described container.
32. ignition-source detecting system as claimed in claim 31, wherein, described at least one detector further is configured to make described first duration or described second duration to prolong the time of a period of time that is detected corresponding to radiation in described container.
33. ignition-source detecting system as claimed in claim 32, wherein, described modulation voltage is taked the form of common square wave.
34. ignition-source detecting system as claimed in claim 1 further comprises companion's heater circuit.
35. ignition-source detecting system as claimed in claim 34, wherein
Described electronic processors is configured to monitor described companion's heater circuit; And
If described electronic processors is configured to described companion's heater circuit and stops to receive electricity and just produce alarm.
36. ignition-source detecting system as claimed in claim 1 further comprises:
Primary source; And
Secondary power, wherein said secondary power is independent of described primary source.
37. ignition-source detecting system as claimed in claim 36, wherein, described secondary power is the battery that is connected to described electronic processors.
38. ignition-source detecting system as claimed in claim 1 further comprises the light emitting diode (LED) that is configured to produce test signal.
39. ignition-source detecting system as claimed in claim 38, wherein, described light emitting diode (LED) is the part of described detector.
40. ignition-source detecting system as claimed in claim 1, wherein, the different digital signal of each emission in the paired normal system condition of work of described at least one detector configuration, system break condition and the Ignition sources condition for identification.
41. ignition-source detecting system as claimed in claim 1, wherein, described system has the response time in the scope of 160 milliseconds and 250 milliseconds.
42. ignition-source detecting system as claimed in claim 1, wherein, described system has 160 milliseconds or response time still less.
43. ignition-source detecting system as claimed in claim 1, wherein, described system has 180 milliseconds or response time still less.
44. ignition-source detecting system as claimed in claim 1, wherein, described system has 200 milliseconds or response time still less.
45. the method that ignition-source detecting system is installed comprises:
Electronic processors is positioned at is in close proximity to the container part;
Detector is installed on the described container, and described detector configuration becomes the radiation in the exploration vessel; And
Connect described electronic processors and detector by dedicated wires.
46. the method for installation ignition-source detecting system as claimed in claim 45 further comprises:
Nozzle is installed on the described container;
To be used to control fluid and be installed to described container to the valve of the flow of described nozzle; And
Connect described electronic processors, detector and valve by dedicated wires.
47. the method for installation ignition-source detecting system as claimed in claim 46 further comprises:
Described electronic processors is installed on the described container.
48. the method for installation ignition-source detecting system as claimed in claim 46 further comprises:
Described electronic processors is installed in the dust-hazard environment.
49. the method for installation ignition-source detecting system as claimed in claim 46 further comprises:
Setting is arranged in the change-over switch on the described electronic processors, with the configuration ignition-source detecting system.
50. the method for installation ignition-source detecting system as claimed in claim 46 further comprises:
Dispose described detector, to survey the radiation in the presetted wavelength scope.
51. the method for installation ignition-source detecting system as claimed in claim 46 further comprises:
By dedicated communications cable watch-dog is connected to described electronic processors, described watch-dog is far away from described container.
52. an ignition-source detecting system comprises:
Electronic processors, it is used to control described ignition-source detecting system; And
Detector, it is used for probe radiation, wherein
Described electronic processors becomes to be positioned at ATEX Zone 21 or NEC Class 2 with probe designs, Division 1 position.
53. the method in response to Ignition sources comprises:
Radiation source in the exploration vessel;
Send digital signal to electronic processors, described electronic processors is positioned at and is in close proximity to described container part;
Signal is sent to valve from described electronic processors; And
Drive described valve to pass through the nozzle release fluids.
54. the method in response to Ignition sources as claimed in claim 53 further comprises:
Monitor the state of described electronic processors by remote monitor.
55. a method of testing ignition-source detecting system comprises:
Produce first test signal, described light emitting diode and detection junction integrator from light emitting diode (LED);
Survey described first test signal at detector;
Send secondary signal to processor; And
Ignore described secondary signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610390038.3A CN105825613B (en) | 2007-02-13 | 2008-02-13 | Ignition-source detecting system and method of installing same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US90097007P | 2007-02-13 | 2007-02-13 | |
| US60/900,970 | 2007-02-13 | ||
| US60/901,087 | 2007-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610390038.3A Division CN105825613B (en) | 2007-02-13 | 2008-02-13 | Ignition-source detecting system and method of installing same |
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| Publication Number | Publication Date |
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| CN101663693A true CN101663693A (en) | 2010-03-03 |
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| CN200880004662A Pending CN101663693A (en) | 2007-02-13 | 2008-02-13 | Improved ignition-source detecting system and associated methods |
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| CN (1) | CN101663693A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6057549A (en) * | 1996-07-31 | 2000-05-02 | Fire Sentry Corporation | Fire detector with multi-level response |
| WO2005091238A2 (en) * | 2004-03-23 | 2005-09-29 | Du Plessis Jacobus Petrus Fran | Fire preventing or extinguishing system for an appliance |
| CN1841435A (en) * | 2005-04-01 | 2006-10-04 | 上海凯伦消防设备有限公司 | Smoke and temperature inductive combined fire detector |
-
2008
- 2008-02-13 CN CN200880004662A patent/CN101663693A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6057549A (en) * | 1996-07-31 | 2000-05-02 | Fire Sentry Corporation | Fire detector with multi-level response |
| WO2005091238A2 (en) * | 2004-03-23 | 2005-09-29 | Du Plessis Jacobus Petrus Fran | Fire preventing or extinguishing system for an appliance |
| CN1841435A (en) * | 2005-04-01 | 2006-10-04 | 上海凯伦消防设备有限公司 | Smoke and temperature inductive combined fire detector |
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Application publication date: 20100303 |