HRP20212001T1 - An apparatus for detecting fire and preventing explosion of transformer and a method thereof - Google Patents

An apparatus for detecting fire and preventing explosion of transformer and a method thereof Download PDF

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Publication number
HRP20212001T1
HRP20212001T1 HRP20212001TT HRP20212001T HRP20212001T1 HR P20212001 T1 HRP20212001 T1 HR P20212001T1 HR P20212001T T HRP20212001T T HR P20212001TT HR P20212001 T HRP20212001 T HR P20212001T HR P20212001 T1 HRP20212001 T1 HR P20212001T1
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Croatia
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pressure
input signal
transformer
valve
oil
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HRP20212001TT
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Croatian (hr)
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V. K. Wakchaure
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V. K. Wakchaure
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Publication of HRP20212001T1 publication Critical patent/HRP20212001T1/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/40Structural association with built-in electric component, e.g. fuse
    • H01F27/402Association of measuring or protective means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/40Structural association with built-in electric component, e.g. fuse
    • H01F27/402Association of measuring or protective means
    • H01F2027/404Protective devices specially adapted for fluid filled transformers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
  • Measurement Of Current Or Voltage (AREA)

Claims (16)

1. Uređaj (100) za detektiranje vatre i sprječavanje eksplozije u transformatoru (30), gdje uređaj (100) sadrži: najmanje jednu jedinicu za detektiranje promjena napona (26a), koja određuje omjer između ulaznog napona koji ulazi u transformator (30) i izlaznog napona koji izlazi iz transformatora (30), pri čemu je najmanje jedna jedinica za detektiranje promjena napona (26a) konfigurirana za slanje prvog ulaznog signala u najmanje jednu upravljačku jedinicu (1) kada omjer između ulaznog napona i izlaznog napona prijeđe zadani granični omjer; jedinicu za detektiranje prekomjerne struje (26b), konfigurirana za praćenje opterećenja na transformatoru (30), gdje se šalje drugi ulazni signal u najmanje jednu upravljačku jedinicu (1) kada opterećenje na transformatoru (30) prijeđe zadano granično opterećenje; najmanje jednu jedinicu za detektiranje porasta razine (18) i najmanje jedan relej brzog porasta tlaka, RPRR, konfiguriran za detektiranje porasta razine ulja i promjene tlaka ulja u spremniku transformatora (14) transformatora (30), gdje se šalje treći ulazni signal u najmanje jednu upravljačku jedinicu (1) kada porast razine ulja i promjena tlaka ulja u spremniku transformatora (14) prijeđe zadani granični tlak; jedan ili više prekidača (24, 28), konfiguriranih za primanje ulaznih signala iz bilo koje od najmanje jedne jedinice za detektiranje promjena napona (26a), jedinice za detektiranje prekomjerne struje (26b), najmanje jedne jedinice za detektiranje porasta razine (18) i najmanje jednog releja brzog porasta tlaka, RPRR, pri čemu jedan ili više prekidača (24, 28) šalje četvrti ulazni signal u najmanje jednu upravljačku jedinicu (1); gdje najmanje jedna upravljačka jedinica (1) je konfigurirana za generiranje upravljačkog signala za aktiviranje ispusnog ventila (4) i ventila za ispuštanje plina (6) kada primi bilo koji od prvog ulaznog signala, drugog ulaznog signala, trećeg ulaznog signala i četvrtog ulaznog signala, pri čemu ventil za ispuštanje plina (6) sadrži: primarni plinski ventil (6a), konfiguriran s primarnim ulaznim priključkom (6d), fluidno spojenim s izvorom plina (7), i primarni izlazni priključak (6e); sekundarni plinski ventil (6b), konfiguriran sa sekundarnim ulaznim priključkom (6f), fluidno spojenim s primarnim izlaznim priključkom (6e), i sekundarnim izlaznim priključkom (6g), fluidno spojenim sa spremnikom transformatora (14) radi usmjeravanja plina u spremnik transformatora (14) kada najmanje jedna upravljačka jedinica (1) aktivira primarni plinski ventil (6a) i sekundarni plinski ventil (6b); i ispusni priključak (6h), konfiguriran za ispuštanje plina koji je istekao iz bilo jednog primarnog plinskog ventila (6a) i sekundarnog plinskog ventila (6b) u atmosferu kada su primarni plinski ventil (6a) i sekundarni plinski ventil (6b) u zatvorenom položaju.1. A device (100) for detecting fire and preventing an explosion in a transformer (30), where the device (100) contains: at least one voltage change detection unit (26a), which determines the ratio between the input voltage entering the transformer (30) and the output voltage leaving the transformer (30), wherein the at least one voltage change detection unit (26a) is configured to sending a first input signal to at least one control unit (1) when the ratio between the input voltage and the output voltage exceeds a predetermined threshold ratio; an overcurrent detection unit (26b), configured to monitor the load on the transformer (30), where a second input signal is sent to at least one control unit (1) when the load on the transformer (30) exceeds a predetermined limit load; at least one level rise detection unit (18) and at least one rapid pressure rise relay, RPRR, configured to detect an oil level rise and change in oil pressure in the transformer tank (14) of the transformer (30), where a third input signal is sent to at least one the control unit (1) when the increase in the oil level and the change in the oil pressure in the transformer tank (14) exceeds the set limit pressure; one or more switches (24, 28), configured to receive input signals from any of at least one voltage change detection unit (26a), an overcurrent detection unit (26b), at least one level rise detection unit (18) and at least one rapid pressure rise relay, RPRR, wherein one or more switches (24, 28) sends a fourth input signal to at least one control unit (1); where at least one control unit (1) is configured to generate a control signal for activating the discharge valve (4) and the gas discharge valve (6) when it receives any one of the first input signal, the second input signal, the third input signal and the fourth input signal, whereby the gas release valve (6) contains: a primary gas valve (6a), configured with a primary inlet port (6d), fluidly connected to a gas source (7), and a primary outlet port (6e); a secondary gas valve (6b) configured with a secondary inlet port (6f) fluidly connected to the primary outlet port (6e) and a secondary outlet port (6g) fluidly connected to the transformer tank (14) to direct gas to the transformer tank (14) ) when at least one control unit (1) activates the primary gas valve (6a) and the secondary gas valve (6b); and a discharge port (6h), configured to discharge expired gas from either of the primary gas valve (6a) and the secondary gas valve (6b) to the atmosphere when the primary gas valve (6a) and the secondary gas valve (6b) are in the closed position. 2. Uređaj (100) u skladu s patentnim zahtjevom 1, pri čemu je najmanje jedna jedinica za detektiranje promjena napona (26a) konfigurirana za slanje prvog ulaznog signala u najmanje jednu upravljačku jedinicu (1) kada omjer između ulaznog napona i izlaznog napona prijeđe granični omjer od 1:40.2. The device (100) according to claim 1, wherein the at least one voltage change detection unit (26a) is configured to send a first input signal to the at least one control unit (1) when the ratio between the input voltage and the output voltage exceeds a threshold a ratio of 1:40. 3. Uređaj (100) u skladu s patentnim zahtjevom 1, pri čemu je jedan ili više prekidača (24, 28), konfiguriranih za odvajanje transformatora (30) kako do njega ne bi došao ulazni napon kada omjer između ulaznog napona i izlaznog napona prijeđe zadani granični omjer.3. The device (100) according to claim 1, wherein one or more switches (24, 28) are configured to disconnect the transformer (30) so that no input voltage reaches it when the ratio between the input voltage and the output voltage exceeds the default cut-off ratio. 4. Uređaj (100) u skladu s patentnim zahtjevom 1, pri čemu je najmanje jedna upravljačka jedinica (1) konfigurirana za generiranje upravljačkog signala za aktiviranje ispusnog ventila (4) radi ispuštanja ulja iz spremnika transformatora (14).4. The device (100) according to claim 1, wherein at least one control unit (1) is configured to generate a control signal for activating the drain valve (4) to drain the oil from the transformer tank (14). 5. Uređaj (100) u skladu s patentnim zahtjevom 1, pri čemu je najmanje jedna upravljačka jedinica (1) konfigurirana za generiranje upravljačkog signala za aktiviranje ventila za ispuštanje plina (6), koji injicira plin iz izvora plina (7) u dno spremnika transformatora (14) kako bi pomiješao ulje (11) radi snižavanja temperature i sadržaja kisika u spremniku transformatora (14), čime se sprječava eksploziju i vatru u transformatoru (30).5. Device (100) according to claim 1, wherein at least one control unit (1) is configured to generate a control signal for activating the gas release valve (6), which injects gas from the gas source (7) into the bottom of the container transformer (14) to mix the oil (11) in order to lower the temperature and oxygen content in the transformer tank (14), thus preventing explosion and fire in the transformer (30). 6. Uređaj (100) u skladu s patentnim zahtjevom 1, pri čemu je sekundarni izlazni priključak (6g) sekundarnog plinskog ventila (6b) spojen sa spremnikom transformatora (14) kroz ventil za reguliranje protoka plina (6c) i nepovratni ventil (37).6. Device (100) in accordance with claim 1, wherein the secondary outlet port (6g) of the secondary gas valve (6b) is connected to the transformer tank (14) through the gas flow control valve (6c) and the check valve (37). . 7. Uređaj (100) u skladu s patentnim zahtjevom 1, pri čemu je izvor plina (7) spojen s primarnim ulaznim priključkom (6d) primarnog plinskog ventila (6a) kroz regulator tlaka (34), koji regulira tlak plina koji ulazi u primarni plinski ventil (6a).7. Device (100) according to claim 1, wherein the gas source (7) is connected to the primary inlet port (6d) of the primary gas valve (6a) through a pressure regulator (34), which regulates the pressure of the gas entering the primary gas valve (6a). 8. Uređaj (100) u skladu s patentnim zahtjevom 1, namijenjen detektiranju vatre i sprječavanju eksplozije u transformatoru (30), gdje uređaj (100) dodatno sadrži: najmanje jednu sklopku za praćenje tlaka (31), konfiguriranu za detektiranje tlaka ulja (11), koje teče kroz ispusnu cijev (9), gdje se šalje ulazni signal u najmanje jednu upravljačku jedinicu (1) kada tlak ulja (11), koje teče kroz ispusnu cijev (9) prijeđe zadanu vrijednost, pri čemu najmanje jedna sklopka za praćenje tlaka (31) sadrži: najmanje jednu tlačnu sklopku (31c), koja generira ulazni signal kada tlak ulja u tlačnom priključku (31a) sklopke za praćenje tlaka (31) prijeđe zadanu vrijednost; najmanje jedan klip s oprugom (31e), u kontaktu s najmanje jednom tlačnom sklopkom (31c), koji pogoni najmanje jednu tlačnu sklopku (31c); najmanje jednu membranu (31b), pričvršćenu na najmanje jedan klip s oprugom (31e), koja pogoni najmanje jedan klip s oprugom (31e), na osnovi tlaka ulja (11) u tlačnom priključku (31a) i ulazi u najmanje jednu membranu (31b); gdje je tlačni priključak (31a) spojen s ispusnom cijevi (9) radi prihvata zadane količine ulja (11), čime se održava tlak ulja (11), koje teče kroz ispusnu cijev (9); te pri čemu je najmanje jedna upravljačka jedinica (1) konfigurirana za generiranje upravljačkog signala za aktiviranje ispusnog ventila (4) i ventila za ispuštanje plina (6) prilikom primitka najmanje jedne sklopke za praćenje tlaka (31).8. Device (100) in accordance with patent claim 1, intended for detecting fire and preventing an explosion in a transformer (30), where the device (100) additionally contains: at least one pressure monitoring switch (31), configured to detect the pressure of the oil (11) flowing through the discharge pipe (9), where an input signal is sent to at least one control unit (1) when the pressure of the oil (11) flowing through the discharge pipe (9) exceeds the set value, wherein at least one pressure monitoring switch (31) contains: at least one pressure switch (31c), which generates an input signal when the oil pressure in the pressure port (31a) of the pressure monitoring switch (31) exceeds a set value; at least one spring-loaded piston (31e), in contact with at least one pressure switch (31c), which drives at least one pressure switch (31c); at least one diaphragm (31b), attached to at least one spring-loaded piston (31e), which drives at least one spring-loaded piston (31e) based on the oil pressure (11) in the pressure port (31a) and enters at least one diaphragm (31b ); where the pressure connection (31a) is connected to the discharge pipe (9) in order to receive a given amount of oil (11), which maintains the pressure of the oil (11), which flows through the discharge pipe (9); you wherein at least one control unit (1) is configured to generate a control signal for activating the discharge valve (4) and the gas discharge valve (6) upon receipt of at least one pressure monitoring switch (31). 9. Uređaj (100) u skladu s patentnim zahtjevom 8, pri čemu je tlačni priključak (31a) spojen s najmanje jednim trosmjernim kuglastim ventilom (42), radi prihvata ulja (11), preusmjerenog iz ispusne cijevi (9).9. Device (100) in accordance with patent claim 8, wherein the pressure connection (31a) is connected to at least one three-way ball valve (42), in order to accept the oil (11), diverted from the discharge pipe (9). 10. Uređaj (100) u skladu s patentnim zahtjevom 9, pri čemu je najmanje jedan trosmjerni kuglasti ventil (42) spojen s najmanje jednim dvosmjernim kuglastim ventilom (41) kroz prvo crijevo (43) za prihvat ulja (11), preusmjerenog iz ispusne cijevi (9).10. Device (100) according to patent claim 9, wherein at least one three-way ball valve (42) is connected to at least one two-way ball valve (41) through the first hose (43) for receiving the oil (11) diverted from the discharge pipes (9). 11. Uređaj (100) u skladu s patentnim zahtjevom 9, pri čemu je najmanje jedan trosmjerni kuglasti ventil (42) spojen s ispusnom cijevi (9) drugim crijevom (44) za vođenje ulja (11), preusmjerenog natrag u ispusnu cijev (9).11. Device (100) according to claim 9, wherein at least one three-way ball valve (42) is connected to the discharge pipe (9) by another hose (44) for guiding the oil (11) diverted back to the discharge pipe (9) ). 12. Uređaj (100) u skladu s patentnim zahtjevom 8, pri čemu je zadana razina tlaka ulja do otprilike 68,64 kPa (7 mwc [metara stupca vode]).12. The device (100) according to claim 8, wherein the predetermined oil pressure level is up to approximately 68.64 kPa (7 mwc [meters of water column]). 13. Uređaj (100) u skladu s patentnim zahtjevom 8, koji sadrži brtvu koja se nalazi između tlačnog priključka (31a) i najmanje jedne membrane (31b) radi sprječavanja istjecanja ulja.13. Device (100) according to claim 8, comprising a seal located between the pressure port (31a) and at least one membrane (31b) to prevent oil leakage. 14. Uređaj (100) u skladu s patentnim zahtjevom 8, koji sadrži više nosivih ploča (31f) za smještavanje najmanje jedne membrane (31b).14. Device (100) in accordance with patent claim 8, which contains several supporting plates (31f) for accommodating at least one membrane (31b). 15. Sustav (101) za detektiranje vatre, detektiranje istjecanje fluida kroz ispusni ventil (4), koji se nalazi u ispusnoj cijevi (9), te sprječavanje vatre u transformatoru (30), gdje sustav (101) sadrži uređaj (100) za detektiranje vatre i sprječavanje eksplozije u transformatoru (30) u skladu s bilo kojim od patentnih zahtjeva 8 do 14, te istjecanje fluida jedinica za detektiranje (102), koji sadrži: odjeljak za prikupljanje fluida (3), fluidno spojen nizvodno od ispusne cijevi (9) radi prikupljanja fluida isteklog kroz ispusni ventil (4) u zatvorenom položaju, pri čemu odjeljak za prikupljanje fluida (3) sadrži: najmanje jednu rupu (38), koja se nalazi na gornjoj i donjoj strani odjeljka za prikupljanje fluida (3), pri čemu je područje oko najmanje jedne rupe (38) na donjoj strani odjeljka za prikupljanje fluida (3) konfigurirano kao područje za prikupljanje fluida (39), koje prikuplja fluid koji je istekao; donja strana odjeljka za prikupljanje fluida (3) je spojena s cijevi za ispuštanje fluida (32), koja se pruža do zadane visine u odjeljak za prikupljanje fluida (3) putem najmanje jedne rupe (38); i najmanje jednu sklopku za razinu fluida (33), koja se nalazi na zadanoj lokaciji unutar odjeljka za prikupljanje fluida (3), koja aktivira upozorenje kada se nakupi zadana količina fluida u području za prikupljanje fluida (39), što ukazuje na istjecanje fluida.15. System (101) for detecting fire, detecting fluid leakage through the discharge valve (4), located in the discharge pipe (9), and preventing fire in the transformer (30), where the system (101) contains a device (100) for fire detection and explosion prevention in the transformer (30) in accordance with any of claims 8 to 14, and detection unit fluid flow (102), which contains: a fluid collection compartment (3), fluidly connected downstream of the discharge pipe (9) to collect the fluid that has flowed through the discharge valve (4) in the closed position, wherein the fluid collection compartment (3) contains: at least one hole (38), located on the upper and lower sides of the fluid collection compartment (3), wherein the area around the at least one hole (38) on the underside of the fluid collection compartment (3) is configured as a fluid collection area (39), which collects the expired fluid; the lower side of the fluid collection compartment (3) is connected to the fluid discharge tube (32), which extends to a given height into the fluid collection compartment (3) through at least one hole (38); and at least one fluid level switch (33), located at a predetermined location within the fluid collection compartment (3), which activates a warning when a predetermined amount of fluid accumulates in the fluid collection area (39), indicating fluid leakage. 16. Postupak detektiranja vatre, detektiranja istjecanje fluida kroz ispusni ventil (4), koji se nalazi u ispusnoj cijevi (9), te sprječavanje eksplozije transformatora (30) uz pomoć sustava (101) u skladu s patentnim zahtjevom 15, gdje se navedeni postupak sastoji u koracima: praćenja razine fluida u odjeljku za prikupljanje fluida (3), pri čemu je najmanje jedna sklopka za razinu fluida (33), koja se nalazi na zadanoj lokaciji unutar odjeljka za prikupljanje fluida (3) konfigurirana za aktiviranje upozorenja kada se detektira zadanu razinu fluida u području za prikupljanje fluida (8) odjeljka za prikupljanje fluida (3), što ukazuje na istjecanje fluida; praćenja tlaka ulja (11) u spremniku transformatora (14), koje teče kroz ispusnu cijev (9), gdje se šalje prvi ulazni signal u najmanje jednu upravljačku jedinicu (11) kada tlak ulja koje teče kroz ispusnu cijev (9) prijeđe zadani granični tlak; izračunavanja omjera između ulaznog napona i izlaznog napona, slanja drugog ulaznog signala u najmanje jednu upravljačku jedinicu (1) kada omjer između ulaznog napona i izlaznog napona prijeđe zadani granični omjer, te slanja trećeg ulaznog signala u najmanje jednu upravljačku jedinicu (1) kada opterećenje na transformatoru (30) prijeđe zadano granično opterećenje; detektiranja prekomjernog porasta razine ulja i brzine promjene tlaka ulja u spremniku transformatora (14) u transformatoru (30) najmanje jednom jedinicom za detektiranje porasta razine (18) odnosno relejem brzog porasta tlaka, RPRR, gdje se šalje četvrti ulazni signal u najmanje jednu upravljačku jedinicu (1); slanja petog ulaznog signala u najmanje jednu upravljačku jedinicu (1) iz jednog ili više prekidača (24, 28) kada jedan ili više prekidač (24) primi bilo koji od prvog ulaznog signala, drugog ulaznog signala, trećeg ulaznog signala i četvrtog ulaznog signala; i primanja bilo kojeg od prvog ulaznog signala, drugog ulaznog signala, trećeg ulaznog signala, četvrtog ulaznog signala i petog ulaznog signala u najmanje jednoj upravljačkoj jedinici (1), gdje se generira upravljački signal za aktiviranje ispusnog ventila (4) i ventila za ispuštanje plina (6) čime se detektira vatru i sprječava eksploziju transformatora (30).16. The method of detecting fire, detecting the leakage of fluid through the discharge valve (4), which is located in the discharge pipe (9), and preventing the explosion of the transformer (30) with the help of the system (101) in accordance with patent claim 15, where the specified procedure consists of steps: monitoring the fluid level in the fluid collection compartment (3), wherein at least one fluid level switch (33) located at a predetermined location within the fluid collection compartment (3) is configured to activate a warning when a predetermined fluid level is detected in fluid collection area (8) of fluid collection compartment (3), indicating fluid leakage; monitoring the oil pressure (11) in the transformer tank (14), which flows through the discharge pipe (9), where the first input signal is sent to at least one control unit (11) when the pressure of the oil flowing through the discharge pipe (9) exceeds a given limit pressure; calculating the ratio between the input voltage and the output voltage, sending a second input signal to at least one control unit (1) when the ratio between the input voltage and the output voltage exceeds a given threshold ratio, and sending a third input signal to at least one control unit (1) when the load on the transformer (30) exceeds the specified limit load; detection of an excessive increase in the oil level and the rate of change of the oil pressure in the transformer tank (14) in the transformer (30) by at least one unit for detecting an increase in the level (18) or a rapid increase in pressure relay, RPRR, where the fourth input signal is sent to at least one control unit (1); sending a fifth input signal to at least one control unit (1) from one or more switches (24, 28) when one or more switches (24) receive any of the first input signal, the second input signal, the third input signal and the fourth input signal; and receiving any one of the first input signal, the second input signal, the third input signal, the fourth input signal and the fifth input signal in at least one control unit (1), where a control signal is generated to activate the discharge valve (4) and the gas discharge valve ( 6) which detects the fire and prevents the explosion of the transformer (30).
HRP20212001TT 2017-03-06 2017-10-27 An apparatus for detecting fire and preventing explosion of transformer and a method thereof HRP20212001T1 (en)

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EP17818613.6A EP3593365B1 (en) 2017-03-06 2017-10-27 An apparatus for detecting fire and preventing explosion of transformer and a method thereof
PCT/IB2017/056679 WO2018162963A1 (en) 2017-03-06 2017-10-27 An apparatus for detecting fire and preventing explosion of transformer and a method thereof

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EA (1) EA039116B1 (en)
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