SE435577B - VIEW TO MONITOR CHANGES OF THE FILTERING EFFECT OF FILTERING DEVICES FOR THE DISPOSAL OF GAS FLUID, SPEC Harmful Substances from Welding Gases, and Device for Implementation of Excavation - Google Patents

VIEW TO MONITOR CHANGES OF THE FILTERING EFFECT OF FILTERING DEVICES FOR THE DISPOSAL OF GAS FLUID, SPEC Harmful Substances from Welding Gases, and Device for Implementation of Excavation

Info

Publication number
SE435577B
SE435577B SE8205417A SE8205417A SE435577B SE 435577 B SE435577 B SE 435577B SE 8205417 A SE8205417 A SE 8205417A SE 8205417 A SE8205417 A SE 8205417A SE 435577 B SE435577 B SE 435577B
Authority
SE
Sweden
Prior art keywords
voltage
filter cells
signaling
light
signal
Prior art date
Application number
SE8205417A
Other languages
Swedish (sv)
Other versions
SE8205417L (en
SE8205417D0 (en
Inventor
Bill Peter Philip Nederman
Original Assignee
Nederman Bill P Ph
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nederman Bill P Ph filed Critical Nederman Bill P Ph
Priority to SE8205417A priority Critical patent/SE435577B/en
Publication of SE8205417D0 publication Critical patent/SE8205417D0/en
Priority to FR8314826A priority patent/FR2533140B1/en
Priority to FI833380A priority patent/FI74881C/en
Priority to CA000437252A priority patent/CA1212162A/en
Priority to DK431283A priority patent/DK431283A/en
Priority to JP58176128A priority patent/JPS5976515A/en
Priority to GB08325278A priority patent/GB2127556B/en
Priority to DE19833334162 priority patent/DE3334162A1/en
Priority to IT8322962A priority patent/IT8322962A0/en
Priority to IT22963/83A priority patent/IT1169842B/en
Priority to IT8324095U priority patent/IT215131Z2/en
Publication of SE8205417L publication Critical patent/SE8205417L/en
Publication of SE435577B publication Critical patent/SE435577B/en
Priority to JP1988096715U priority patent/JPH0353700Y2/ja

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/66—Applications of electricity supply techniques
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/72—Emergency control systems

Description

8205417-2 Uppfinningen skall nedan förklaras med hänvisning till bifogade ritningar på vilka figur l schematiskt visar en filtreringsanordning med en anordning enligt uppfinningen; figur 2 visar schematiskt ett spännings- fält; figur 3 visar ett kopplingsschema avseende en koppling, som ingår i anordningen enligt uppfinningen. The invention will be explained below with reference to the accompanying drawings, in which Figure 1 schematically shows a filtration device with a device according to the invention; Figure 2 schematically shows a voltage field; Figure 3 shows a wiring diagram of a coupling included in the device according to the invention.

Den på ritningen visade anordningen består av en högspänningstrans- formator l och en filtreringsanordning 2 för avskiljning av föroreningar ur gas, företrädesvis skadliga substanser ur svetsrök på svetsarbetsplat- ser. Filtreringsanordningen 2 uppvisar en automatdriven fläkt 3 och ett (eller flera uttagbara filter 4 innefattande filterceller 5. Fläkten 3 är avsedd att suga in förorenad luft 6 i en joniserad sektor 7 hos filt- reringsanordningen 2, där förorenade partiklar i luftströmmen laddas positivt för att dessa partiklar skall avsätta sig på filtercellerna 5, som är negativt laddade.The device shown in the drawing consists of a high-voltage transformer 1 and a filtration device 2 for separating pollutants from gas, preferably harmful substances from welding fumes at welding workplaces. The filtering device 2 has an automatically driven fan 3 and one (or more removable filters 4 comprising filter cells 5. The fan 3 is intended to suck polluted air 6 into an ionized sector 7 of the filtering device 2, where polluted particles in the air stream are positively charged for these particles should settle on the filter cells 5, which are negatively charged.

Allteftersom partiklarna avsätter sig pä filtercellerna 5, sjunker deras förmåga att uppta fler partiklar så, att filtreringsanordningens filtreringseffekt efter en tids användning blir otillfredsställande. 7 För att indikera nedsatt filtreringsfunktion innan filtrerings- anordningen 2 kan fortsätta med nedsatt filtreringseffekt alltför länge eller innan filtreringseffekten sjunker ytterligare till helt oauoepln- bel nivå, övervakas filtercellen 5 av en avkännings- och signalgivninqs- anordning 8. Denna har en elektronisk styrkrets 9 (se figur 3) med in- gångar 10 och ll för indikering av spänningen (den s.k. resonansspän- ningen) mellan filtercellerna 5. Vid normal filtereffekt ligger spän- ningen mellan filtercellerna 5 inom intervallet ll0 - 124 V (se figur 2), varvid styrkretsen 9 inte ger spänning till summer 12 och lampa 13 men fortsätter ge spänning till ett relä till fläktens 3 motor. Om spän- ningen sjunker under ll0 V eller stiger över 124 V genom att filter- cellerna 5 börjar sättas igen av föroreningar och/eller på grund av kortslutningseffekter i filtercellerna 5 förorsakade av skador på däri ingående kollektorplåtar (ej visade) och/eller på grund av avbrott hos joniseringstrådar (ej visade) i den joniserade sddnrn 7, sker följande: Signalgivning konstant summerton konstant ljussken kontaktor till fläktmotor bryter inom exempelvis l2 sekunder Spänning < 108,5 V 8205417-2 i» 108,5 - 110 V intermittent summerton intermittent ljussken kontaktor bryter ej 110 - 124 V ingen summerton inget ljussken kontaktor bryter ej 124 - 125,5 V intermittent summerton intermittent ljussken kontaktor bryter ej 2> 125,5 V konstant summerton konstant ljussken kontaktor till fläktmotor bryter inom exempelvis 12 sekunder Brytning av kontaktor till fläktmotor, det vill säga avstängning av fläkten 3, är lämpligen fördröjd ett antal sekunder, exempelvis 6 - 20 sekunder, för att fläkten 3 inte skall stanna på grund av tillfälligt passerande metallföremâl, som tillfälligt sänker spänningen mellan filter- cellerna 5. Om spänningen däremot varaktigt understiger 108,5 V eller överstiger 125,5 V, stängs fläkten 3 och den kan återstartas endast efter byte eller rengöring av smutsiga filterceller 5.As the particles deposit on the filter cells 5, their ability to absorb more particles decreases so that the filtration effect of the filtration device after a period of use becomes unsatisfactory. 7 To indicate reduced filtering function before the filtering device 2 can continue with reduced filtering power for too long or before the filtering power drops further to a completely impossible level, the filter cell 5 is monitored by a sensing and signaling device 8. This has an electronic control circuit 9 ( see figure 3) with inputs 10 and ll to indicate the voltage (the so-called resonant voltage) between the filter cells 5. At normal filter power, the voltage between the filter cells 5 is in the range ll0 - 124 V (see figure 2), whereby the control circuit 9 does not supply voltage to buzzer 12 and lamp 13 but continues to supply voltage to a relay to fan 3 motor. If the voltage drops below 110 V or rises above 124 V due to the filter cells 5 starting to become clogged by contaminants and / or due to short-circuit effects in the filter cells 5 caused by damage to the collector plates included therein (not shown) and / or due to of interruptions of ionization wires (not shown) in the ionized sddnr 7, the following occurs: Signaling constant buzzer tone constant light contactor to fan motor breaks within for example l2 seconds Voltage <108.5 V 8205417-2 i »108.5 - 110 V intermittent buzzer tone intermittent light contactor does not break 110 - 124 V no buzzer no light contactor does not break 124 - 125.5 V intermittent buzzer intermittent light contactor does not break 2> 125.5 V constant buzzer constant light contactor to fan motor breaks within for example 12 seconds Breaking contactor to fan motor, i.e. switching off the fan 3, is suitably delayed for a number of seconds, for example 6 - 20 seconds, in order for the fan 3 should not stop due to temporarily passing metal objects, which temporarily lower the voltage between the filter cells 5. If, on the other hand, the voltage permanently falls below 108.5 V or exceeds 125.5 V, the fan 3 closes and can only be restarted after changing or cleaning dirty filter cells 5.

Värdena i den ovan angivna spänning/signalgivningstabellen kan givet- vis variera allt i beroende på utförandet m.m. hos avkännings- och signal- givningsanordningens 8 delar eller andra delar i systemet.The values in the above-specified voltage / signaling table can of course vary depending on the design, etc. of the parts or other parts of the sensing and signaling device 8 in the system.

Styrkretsens 9 konstruktion kan variera, men i figur 3 illustreras ett praktiskt användbart och funktionellt riktigt utförande. Det kan nämnas att den ingående resonansspänningen likriktas, spänningsdelas samt filtreras. Nivån regleras med trimpotentiometern 14 och utgör ett mått på filtrets renhet.The construction of the control circuit 9 may vary, but Figure 3 illustrates a practically useful and functionally correct design. It can be mentioned that the input resonant voltage is rectified, voltage divided and filtered. The level is regulated with the trim potentiometer 14 and is a measure of the purity of the filter.

Spänningen påförs komparatorerna 15 - 18 och referensspänningar bildas av stabiliserad 24 V från enheten 19.The voltage is applied to the comparators 15 - 18 and reference voltages are formed by stabilized 24 V from the unit 19.

Komparatorerna 16 och 17 ger signaler vid 124 V resp. 110 V sinus- spänning och komparatorerna 15 och 18 ger signaler vid 125,5 V resp. 108,5 V. Komparatorerna 16 och 17 aktiverar pulskretsen 20 som matar summern 12 samt triac 21, vilken tänder signallampan 13. Intermittent ljus- och ljudsignal fås då endera komparatorn 16 eller 17 aktiveras.Comparators 16 and 17 give signals at 124 V and 110 V sine voltage and the comparators 15 and 18 give signals at 125.5 V resp. 108.5 V. The comparators 16 and 17 activate the pulse circuit 20 which supplies the buzzer 12 and the triac 21, which turns on the signal lamp 13. Intermittent light and sound signal is obtained when either the comparator 16 or 17 is activated.

Komparatorerna 15 och 18 blockerar pulskretsen i aktivt tillstånd samt startar tidskretsen 22 som efter cirka 12 sekunder bryter styr- strömmen till triac 23, vilket får kontaktorn i matningsdonet att falla.The comparators 15 and 18 block the pulse circuit in the active state and start the timing circuit 22 which after about 12 seconds interrupts the control current to the triac 23, which causes the contactor in the supply device to fall.

Enheten 24 arbetar som drivkrets för triac 23 och motstånden 25 och 26The unit 24 acts as a driving circuit for the triac 23 and the resistors 25 and 26

Claims (5)

8205417-2 4' åstadkommer ca. l V hysteres vid nivåerna l24 V resp. ll0 V för att ge distinkt funktion. Uppfinningssättet och den uppfinningsenliga anordningen är inte begränsade till det som framgår av beskrivning och ritningar utan kan variera inom ramen för efterföljande patentkrav. Sålunda kan signalgiv- ning ske i form av endast ljussignal, endast ljudsignal, endast avstäng- ningssignal eller en lämplig kombination därav. Patentkrav8205417-2 4 'provides approx. l V is hysterical at levels l24 V resp. ll0 V to provide distinct function. The method of the invention and the device according to the invention are not limited to what appears from the description and drawings but can vary within the scope of the appended claims. Thus, signaling can take place in the form of only light signal, only sound signal, only shut-off signal or a suitable combination thereof. Patent claims 1. l. Sätt att övervaka filtreringseffekten hos anordningar (2) för filtrering av föroreningspartiklar ur gaser, företrädesvis skadliga sub- stanser ur svetsgaser, för att fastställa när filtreringseffekten nått en oacceptabelt låg nivå på grund av anhopning av elektriskt laddade föroreningspartiklar på filterceller (5) med motsatt elektrisk laddning, varvid elektrisk spänning förekommer mellan filtercellerna (5), k ä n n e t e c k n a t a v att förändringar av spänningen mellan filtercellerna (5) avkännes och signalgivning sker vid viss förändring av spänningen.1. l. Method of monitoring the filtration effect of devices (2) for filtering pollutant particles from gases, preferably harmful substances from welding gases, to determine when the filtration effect has reached an unacceptably low level due to accumulation of electrically charged pollutant particles on filter cells (5 ) with opposite electrical charge, whereby electrical voltage occurs between the filter cells (5), characterized in that changes in the voltage between the filter cells (5) are sensed and signaling occurs at a certain change of the voltage. 2. Sätt enligt patentkrav l, k ä n n e t e c k n a t a v att signalgivning sker i form av ljus- och/eller ljudsignal då spänningen över- eller understiger ett visst gränsvärde och att signalgivning i form av stoppsignal till en fläkt (3) för gastransport genom filtrerings- anordningen (2) sker då spänningen blir ännu högre eller ännu lägre än vid nämnda gränsvärden.2. A method according to claim 1, characterized in that signaling takes place in the form of light and / or sound signal when the voltage exceeds or falls below a certain limit value and that signaling in the form of a stop signal to a fan (3) for gas transport through the filtration device (2) occurs when the voltage becomes even higher or even lower than at said limit values. 3. Sätt enligt patentkrav 2, k ä n n e t e c k n a t a v att stoppsignal utlöses en viss tidsperiod efter det att spänningen nått stoppsignalvärdena.3. A method according to claim 2, characterized in that a stop signal is triggered for a certain period of time after the voltage has reached the stop signal values. 4. Sätt enligt något av föregående patentkrav, k ä n n e t e o k - n a t a v att signalgivning sker i form av en intermittent ljus- och/eller ljudsignal och i form av en konstant ljus- och/eller ljud- signal om spänningen når högre eller lägre värden än för utlösning av den intermittenta ljus- och/eller ljudsignalenv '4. A method according to any one of the preceding claims, characterized in that signaling takes place in the form of an intermittent light and / or sound signal and in the form of a constant light and / or sound signal if the voltage reaches higher or lower values than for triggering the intermittent light and / or sound signal nerve ' 5. Anordning för genomförande av sätt att övervaka filtrerings- effekten hos anordningar (2)-för filtrering av föroreningspartiklar ur gaser, företrädesvis skadliga substanser ur svetsgaser, för att fast- ställa när filtreringseffekten nått en oacceptabelt låg nivå på grund av anhopning av elektriskt laddade föroreningspartiklar på filterceller (5) med motsatt elektrisk laddning, varvid elektrisk spänning förekonmer mellan filtercellerna (5), k ä n n e t e c k n a d a v en styrkrets (9), i vilken spänningen mellan filtercellerna (5) hos filtreringsanord- ß ~ a2ns417-2 ningen (2) påverkar signalgivningskomparatorer (15 - IB) för angivning av ljus-, ljud- och styrsignaler i beroende av spänningsändringax mellan filtercellerna (5).Device for carrying out methods for monitoring the filtration power of devices (2) - for filtering pollutant particles from gases, preferably harmful substances from welding gases, to determine when the filtration power has reached an unacceptably low level due to accumulation of electrically charged contaminant particles on filter cells (5) with opposite electrical charge, whereby electrical voltage is present between the filter cells (5), characterized by a control circuit (9), in which the voltage between the filter cells (5) of the filtration device (2) affects signaling comparators (15 - 1B) for indicating light, sound and control signals depending on voltage change axis between filter cells (5).
SE8205417A 1982-09-22 1982-09-22 VIEW TO MONITOR CHANGES OF THE FILTERING EFFECT OF FILTERING DEVICES FOR THE DISPOSAL OF GAS FLUID, SPEC Harmful Substances from Welding Gases, and Device for Implementation of Excavation SE435577B (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE8205417A SE435577B (en) 1982-09-22 1982-09-22 VIEW TO MONITOR CHANGES OF THE FILTERING EFFECT OF FILTERING DEVICES FOR THE DISPOSAL OF GAS FLUID, SPEC Harmful Substances from Welding Gases, and Device for Implementation of Excavation
FR8314826A FR2533140B1 (en) 1982-09-22 1983-09-19 METHOD AND DEVICE FOR DETECTING VARIATIONS IN THE FILTERING EFFICIENCY OF ELECTROSTATIC FILTERS
DE19833334162 DE3334162A1 (en) 1982-09-22 1983-09-21 METHOD FOR DETECTING CHANGES IN THE FILTER EFFECT IN FILTER DEVICES FOR THE SEPARATION OF IMPURITIES FROM FLOWING, GASEOUS MEDIA AND DEVICE FOR IMPLEMENTING THE METHOD
GB08325278A GB2127556B (en) 1982-09-22 1983-09-21 Sensing changes in the filtering effects of gaseous filters
CA000437252A CA1212162A (en) 1982-09-22 1983-09-21 Method for sensing changes in the filtering effect of filtering devices for separation of contamination from gaseous streams and a device for carrying out the method
DK431283A DK431283A (en) 1982-09-22 1983-09-21 PROCEDURE FOR REGISTERING CHANGES IN THE FILTERING EFFECTS BY A FILTERING APPARATUS FOR THE SEPARATION OF POLLUTANTS FROM GAS FLOWS AND APPARATUS FOR EXERCISING THE PROCEDURE
JP58176128A JPS5976515A (en) 1982-09-22 1983-09-21 Method and apparatus for detecting change of filtering effect of filter apparatus for separating contaminant from gas flow
FI833380A FI74881C (en) 1982-09-22 1983-09-21 SAETT ATT AVKAENNA FOERAENDRINGAR AV FILTRERINGSEFFEKTEN HOS FILTRERINGSANORDNINGAR FOER URSKILJNING AV FOERORENINGAR UR GASFLOEDEN OCH ANORDNING FOER GENOMFOERANDE AV IFRAOGAVARANDE SAETT.
IT8322962A IT8322962A0 (en) 1982-09-22 1983-09-22 DEVICE SUITABLE FOR SENSING CHANGES IN THE FILTRATION EFFECT OF FILTRATION DEVICES FOR THE SEPARATION OF CONTAMINATIONS FROM CONTINUOUS FLOWS.
IT22963/83A IT1169842B (en) 1982-09-22 1983-09-22 PROCEDURE FOR PERCEIVING CHANGES IN THE EFFECT OF FILTRATION OF DIFILTRATION DEVICES FOR THE SEPARATION OF CONTAMINATIONS FROM CONTINUOUS GASEOUS FLOWS AND DEVICE TO REALIZE THE PROCEDURE
IT8324095U IT215131Z2 (en) 1982-09-22 1983-11-22 DEVICE SUITABLE FOR PERCEIVING CHANGES IN THE FILTRATION EFFECT OF FILTRATION DEVICES FOR THE SEPARATION OF CONTAMINATIONS FROM CONTINUOUS FLOWS
JP1988096715U JPH0353700Y2 (en) 1982-09-22 1988-07-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8205417A SE435577B (en) 1982-09-22 1982-09-22 VIEW TO MONITOR CHANGES OF THE FILTERING EFFECT OF FILTERING DEVICES FOR THE DISPOSAL OF GAS FLUID, SPEC Harmful Substances from Welding Gases, and Device for Implementation of Excavation

Publications (3)

Publication Number Publication Date
SE8205417D0 SE8205417D0 (en) 1982-09-22
SE8205417L SE8205417L (en) 1984-03-23
SE435577B true SE435577B (en) 1984-10-08

Family

ID=20347950

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8205417A SE435577B (en) 1982-09-22 1982-09-22 VIEW TO MONITOR CHANGES OF THE FILTERING EFFECT OF FILTERING DEVICES FOR THE DISPOSAL OF GAS FLUID, SPEC Harmful Substances from Welding Gases, and Device for Implementation of Excavation

Country Status (9)

Country Link
JP (2) JPS5976515A (en)
CA (1) CA1212162A (en)
DE (1) DE3334162A1 (en)
DK (1) DK431283A (en)
FI (1) FI74881C (en)
FR (1) FR2533140B1 (en)
GB (1) GB2127556B (en)
IT (3) IT8322962A0 (en)
SE (1) SE435577B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69409736T2 (en) * 1993-08-30 1998-10-01 Millipore Invest Holdings Testing the integrity of porous structures using sound emissions
ITPN940015A1 (en) * 1994-03-16 1995-09-16 Procond Elettronica Spa ELECTROSTATIC FILTER AIR PURIFIER

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1337255A (en) * 1970-11-27 1973-11-14 Secr Defence Methods of testing adsorbent materials
GB1309344A (en) * 1971-03-10 1973-03-07 Bondarev V P Device for evaluating the quality of cake in intermittent filters
US3754219A (en) * 1972-01-03 1973-08-21 Johnson Service Co High impedance gaseous ion sensing and detection system
JPS5614644B2 (en) * 1972-10-19 1981-04-06
DE2261792C2 (en) * 1972-12-16 1974-10-03 Berckheim, Constantin Graf Von, 6940 Weinheim Device for measuring air pollution
JPS5060875A (en) * 1973-10-02 1975-05-26
GB1487179A (en) * 1974-12-12 1977-09-28 Secr Defence Method and apparatus for detecting polar vapours in gases
JPS5262622A (en) * 1975-11-19 1977-05-24 Mitsubishi Electric Corp Wiring method of d.c. input power source for inverter
JPS53161380U (en) * 1977-05-26 1978-12-18
US4264331A (en) * 1977-08-03 1981-04-28 Johnson Controls, Inc. Charged non-conductive polar gas sensing element and detection system
JPS5614644U (en) * 1979-07-10 1981-02-07

Also Published As

Publication number Publication date
JPS6436024U (en) 1989-03-06
FI74881C (en) 1988-04-11
FI833380A (en) 1984-03-23
DK431283A (en) 1984-03-23
JPS5976515A (en) 1984-05-01
DE3334162A1 (en) 1984-03-22
SE8205417L (en) 1984-03-23
GB8325278D0 (en) 1983-10-26
IT215131Z2 (en) 1990-08-20
FI74881B (en) 1987-12-31
DK431283D0 (en) 1983-09-21
IT8322962A0 (en) 1983-09-22
FR2533140A1 (en) 1984-03-23
SE8205417D0 (en) 1982-09-22
GB2127556B (en) 1987-08-26
DE3334162C2 (en) 1989-11-09
GB2127556A (en) 1984-04-11
FI833380A0 (en) 1983-09-21
FR2533140B1 (en) 1988-06-10
IT8322963A0 (en) 1983-09-22
IT8324095V0 (en) 1983-11-22
IT8322963A1 (en) 1985-03-22
CA1212162A (en) 1986-09-30
IT1169842B (en) 1987-06-03
JPH0353700Y2 (en) 1991-11-25

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