EP1189249B1 - Explosionsgeschützter Spannungswandler - Google Patents
Explosionsgeschützter Spannungswandler Download PDFInfo
- Publication number
- EP1189249B1 EP1189249B1 EP01121495A EP01121495A EP1189249B1 EP 1189249 B1 EP1189249 B1 EP 1189249B1 EP 01121495 A EP01121495 A EP 01121495A EP 01121495 A EP01121495 A EP 01121495A EP 1189249 B1 EP1189249 B1 EP 1189249B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lid
- voltage transformer
- excess pressure
- pressure protection
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
Definitions
- the invention relates to voltage transformers, according to the Preamble of claim 1.
- Railcars are used on European rail networks, which are equipped with voltage transformers. These Voltage transformers are arranged on the motor coach roof. The lower part of the voltage transformer is on Ground potential and the upper part at the high voltage potential at. Due to the small spatial separation and the high Potential difference are voltage converters special Exposed to stress. If damage occurs on Voltage transformers under unfavorable system conditions, can explode explosive processes. It comes suggest that the voltage converter burst, causing components of the voltage converter are released. Such a Damage could result in personal injury in a train station to lead.
- a transducer which inside a hollow body made of porcelain is arranged.
- a pressure-resistant tube from a provided insulating material.
- Japan JP62002505A is a Transformer with shell known, the shell with a Burst protection in the form of a deliberately weaker has configured wall section.
- the invention is based on the object, a Voltage converter of the type mentioned in addition to improve that his safety in railway operations continues is increased.
- the problem underlying the invention is characterized solved that the tubular portion of the shell top of a lid is closed, which is an overpressure protection having between overpressure protection, Voltage transformer and foam mass an expansion space is provided. This advantageously ensures that the Energy of an explosion reduced in several stages and a destruction of the shell is avoided. Perhaps entrained voltage transformer parts are due to the Overpressure protection thrown vertically upwards. A Endangering people standing at the station thereby avoided.
- the tubular sheath is a particularly good Adaptation to the shape of the voltage converter achieved.
- the Lateral surface of cylinders is particularly pressure-stable, so that the main points of application of the pressure wave at the Transition between cylinder jacket and top surface are located.
- the cylindrical formation of this section of the shell ensures a propagation of the pressure wave in the event of an explosion up. Any parts detached from the voltage transformer can not be thrown sideways This will the endangerment of persons in stations considerably reduced.
- the tubular portion of the shell glass fiber reinforced plastic preferably in wound version exists.
- This material is particularly pressure stable, the released in an explosion Energy of the pressure wave is through a plastic Deformation of the protective device made of glass fiber reinforced Plastic consumed.
- the wound execution becomes the pressure stability of the tubular portion of the shell advantageous further increased.
- the Tubular portion of the shell outside rib-shaped circumferential shields preferably made of Silicone, which has the necessary creepage path and the necessary distance to the safe operation of the Voltage converter reached.
- the Overpressure protection under the tubular section Spring pressure is finally designed as a lid, wherein preferably the tubular portion at its upper End a cover flange for fixing the lid having.
- the entire cover construction with screws and Spring settings is chosen to be a permanent and safe operating condition is reached. In case of damage, so in an explosion of the voltage converter, presses resulting overpressure the lid against the spring force upward, creating an annular gap between the lid and shell arises. Through this annular gap, the overpressure escape in a controlled manner.
- the release of Voltage transformer components is avoided with advantage. Furthermore, it prevents parts of the Overpressure safety device to be released.
- cover and cover flange bolts with head and at least a thread on the head are provided opposite end of the bolt, wherein each bolt coaxially through the through the spring curvature formed spring interior, an opening in the lid and an opening in the cover flange is guided, and the bolts the compression springs against the cover and the cover flange by means of nuts bias, preferably the Compression springs are distributed over the circumference of the lid and in particular the compression springs in the closed state of Overpressure protection biased by about 30% of its length are.
- This arrangement has the following advantages: One Destruction of the bolts in an explosion of the Voltage transformer is avoided, the bias of the Springs are each through a nut-threaded combination freely selectable, ensures the distribution of compression springs, that the voltage converter hermetically in normal operation isolated from the environment and that a uniform Recording of the resulting explosion pressure takes place, thereby it is ensured that the overpressure protection in case an explosion is not destroyed. Finally one is Another advantage of the bias of the springs that the resulting gap between the lid and tubular Section of the shell in case of an explosion not too big is to release parts of the voltage converter. there the bias is chosen so that in the case of Explosion of a voltage transformer enough suspension travel is available.
- the compression springs are enclosed by a protective cover and / or the lid has a downwardly angled edge contour.
- the Protective cover is for example as pot-like Metal cylinder formed, which together with a pedestal encloses the compression spring on all sides.
- the reversed running edge contour prevents in case of operation the direct attack possibility of the driving wind and thus the total environmental impact on the transition point between Lid and case. In case of damage, this contour leads to necessary stability of the lid, it is hereby a Ripping out of the holes prevented. The resulting circumferential gap is sufficient for the necessary Pressure relief, but the edge contour prevents this Throwing away tiny particles.
- the object of the invention is also achieved in that the Overpressure protection as bursting device with an opening is formed in the lid, preferably with bursting foil is closed.
- This embodiment of Overpressure protection enables controlled pressure reduction.
- the bursting device is designed so that when it reaches a certain internal pressure one or more bursting tear open and the internal pressure escapes in the opening direction. The pressure can escape slowly, reducing the force of a Explosion is greatly reduced.
- FIG. 1 shows a voltage converter 1 for use Railcar with electric drive shown. Of the Voltage converter 1 is on a mounting flange. 2 attached, which for mounting on a not shown Railcar serves.
- the mounting flange 2 carries next to the voltage converter. 1 in addition a voltage converter 1 as a cylinder jacket surrounding and upwardly open tubular, out fiberglass reinforced plastic existing section of the Case 3.
- a voltage converter 1 as a cylinder jacket surrounding and upwardly open tubular, out fiberglass reinforced plastic existing section of the Case 3.
- an overpressure protection. 6 intended. This consists of one, the cylinder jacket top-closing lid 7, on the top and so that outside pressure springs 8 are arranged radially.
- Cover 7 and mounting flange 2 are over two metal Flanges - cover flange 13 and lower Mounting flange with the tubular section of the Case 3 is connected, with the two flanges in the tubular portion of the shell 3 are cemented.
- Mounting flange 2, tubular section and Overpressure protection 6 form a voltage converter. 1 completely enclosing cover 3.
- the outer surface of the tubular portion of the shell 3 has rib-shaped circumferential silicone screens 4 on which by vulcanization with the tubular Section are connected.
- the umbrellas ensure the safe operation of the voltage transformer necessary Creepage distances and strike distances.
- a Foam composition for example as a foam layer 5 be brought in by the force of an explosion is further reduced. It is between shell 3 and Voltage converter 1, an expansion space 18 released.
- the overpressure protection 6 consists of one, the tubular portion of the shell 3 concluding upwards Cover 7, on the top and thus outside compression springs 8 are arranged radially.
- the compression springs 8 press the Cover 7 to the cover flange 13.
- a compression spring 8 in a Detailed view shown.
- the compression springs 8 are of a cup-shaped Protective hood 16 enclosed.
- the protective cover 16 is on a base 23 fixed to the top of the lid 7 attached with central bore.
- a bolt 9 with head 10 is guided so that the upper end the compression spring 8 bears against the head 10 of the bolt 9.
- the bolt 9 is also through the base 23, a Opening 11 in the lid 7 and an opening 12 in the cover flange 13 of the shell 3 out.
- the bolt 9 has a thread 14. On the thread 14 is a nut 15 is screwed.
- the edge region 17 of the lid 7 is down as Angled edge contour.
- the angle is in this Embodiment 90 °.
- the reverse running Edge contour 17 prevents direct attack possibility of weather-related environmental influences on the Overpressure protection 6 and the voltage converter 1.
- the overpressure protection 6 as Bursting 19 is formed with an opening 20, the is closed with bursting foil 21.
- the bursting direction 19 is with the shell 3 means at the periphery of the bursting device 19 located fastening screws 22 screwed.
- the Bursting 19 is dimensioned so that when reached a certain internal pressure ruptures the bursting foil 21 and the internal pressure escapes in the opening direction.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Casings For Electric Apparatus (AREA)
- Coils Or Transformers For Communication (AREA)
- Gas-Insulated Switchgears (AREA)
- Dc-Dc Converters (AREA)
- Measuring Fluid Pressure (AREA)
Description
- Fig. 1:
- eine Darstellung des Spannungswandlers mit Hülle und Überdrucksicherung mittels Deckel,
- Fig.2:
- eine Detailansicht der Druckfeder mit Bolzen und
- Fig.3:
- eine Darstellung des Spannungswandlers mit Hülle und Überdrucksicherung mittels Berstscheibe.
- 1
- Spannungswandler
- 2
- Montageflansch
- 3
- Hülle
- 4
- Schirme
- 5
- Schaummasse
- 6
- Überdrucksicherung
- 7
- Deckel
- 8
- Druckfedern
- 9
- Bolzen
- 10
- Kopf
- 11
- Öffnung im Deckel
- 12
- Öffnung im Deckelflansch
- 13
- Deckelflansch
- 14
- Gewinde
- 15
- Mutter
- 16
- Schutzhaube
- 17
- Randkontur
- 18
- Expansionsraum
- 19
- Bersteinrichtung
- 20
- Überdrucksicherungsöffnung im Deckel
- 21
- Berstfolie
- 22
- Befestigungsschrauben
- 23
- Sockel
Claims (7)
- Spannungswandler (1) insbesondere Spannungswandler auf Triebwagen mit elektrischem Antrieb, wobei der Spannungswandler eine umschließende Hülle (3) als Schutzvorrichtung mit Überdrucksicherung (6) aufweist, wobei die Hülle (3) einen Abschnitt aufweist, der rohrförmig, insbesondere zylinderförmig ausgebildet ist und zwischen Spannungswandler (1) und Hülle (3) vorzugsweise eine Schaummasse (5) eingebracht ist, die vorzugsweise flammhemmend ausgerüstet ist,
dadurch gekennzeichnet, daß der rohrförmige Abschnitt der Hülle (3) oben von einem Deckel (7) verschlossen ist, der die Überdrucksicherung (6) aufweist, wobei zwischen Überdrucksicherung (6) und Spannungswandler (1) und Schaummasse (5) ein Expansionsraum (18) vorgesehen ist. - Spannungswandler nach Anspruch 1,
dadurch gekennzeichnet, daß der rohrförmige Abschnitt der Hülle (3) aus glasfaserverstärktem Kunststoff, vorzugsweise in gewickelter Ausführung besteht. - Spannungswandler nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß der rohrförmige Abschnitt der Hülle (3) außen rippenartig geformte umlaufende Schirme (4), vorzugsweise aus Silikon aufweist. - Spannungswandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Überdrucksicherung (6) den rohrförmigen Abschnitt unter Federdruck abschließend als Deckel (7) ausgebildet ist, wobei vorzugsweise der rohrförmige Abschnitt an seinem oberen Ende einen Deckelflansch (13) für den Deckel (7) aufweist. - Spannungswandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß zwischen Deckel (7) und Deckelflansch (13) Bolzen (9) mit Kopf (10) und zumindest einem Gewinde (14) an dem dem Kopf (10) gegenüberliegendem Ende des Bolzen (9) vorgesehen sind, wobei jeder Bolzen (9) koaxial durch das Zentrum einer Druckfeder (8), einer Öffnung (11) im Deckel (7) und einer Öffnung (12) im Deckelflansch (13) geführt ist und die Bolzen (9) die Druckfedern (8) gegen den Deckel (7) und den Deckelflansch (13) mittels Muttern (15) vorspannen, wobei vorzugsweise die Druckfedern (8) über den Umfang des Deckels (7) verteilt sind und insbesondere die Druckfedern (8) im geschlossenen Zustand der Überdrucksicherung (6) um etwa 30% ihrer Länge vorgespannt sind. - Spannungswandler nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Druckfedern (8) von einer Schutzhülle (16) umschlossen sind und/oder der Deckel (7) eine nach unten abgewinkelte Randkontur (17) aufweist. - Spannungswandler nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Überdrucksicherung (6) als Bersteinrichtung (19) mit einer Überdrucksicherungsöffnung (20) im Deckel (7) ausgebildet ist, die vorzugsweise mit Berstfolie (21) verschlossen ist.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20016065U | 2000-09-16 | ||
DE20016065U DE20016065U1 (de) | 2000-09-16 | 2000-09-16 | Explosionsgeschützter Bahnwandler |
DE20107017U | 2001-04-24 | ||
DE20107017U DE20107017U1 (de) | 2000-09-16 | 2001-04-24 | Spannungswandler |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1189249A2 EP1189249A2 (de) | 2002-03-20 |
EP1189249A3 EP1189249A3 (de) | 2002-11-27 |
EP1189249B1 true EP1189249B1 (de) | 2005-11-16 |
Family
ID=26056526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01121495A Expired - Lifetime EP1189249B1 (de) | 2000-09-16 | 2001-09-08 | Explosionsgeschützter Spannungswandler |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1189249B1 (de) |
AT (1) | ATE310312T1 (de) |
DE (1) | DE50108068D1 (de) |
ES (1) | ES2253312T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101350247B (zh) * | 2007-07-18 | 2010-09-08 | 大连北方互感器有限公司 | 电力机车用户外干式电压互感器 |
EP3373313A1 (de) | 2017-03-08 | 2018-09-12 | RITZ Instrument Transformers GmbH | Berstsicherer stromwandler, insbesondere für triebwagen |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1648001B1 (de) * | 2004-10-15 | 2008-05-14 | KG Ritz Messwandler GmbH & Co. | Spannungswandler für Eisenbahntriebwagen |
DE202014100486U1 (de) * | 2014-02-04 | 2015-05-05 | Sma Solar Technology Ag | Deformierbares befestigungselement und wechselrichter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2904616A (en) * | 1958-03-18 | 1959-09-15 | Mc Graw Edison Co | Encased electrical apparatus having pressure relief means |
DE2624882A1 (de) * | 1976-06-03 | 1977-12-15 | Transformatoren Union Ag | Ueberdruckschutzeinrichtung fuer mit isolierfluessigkeit oder isoliergas gefuellte elektrische maschinen und apparate |
DE2749659A1 (de) * | 1977-11-05 | 1979-05-10 | Balteau Sa | Messwandler |
JPS622505A (ja) * | 1985-06-27 | 1987-01-08 | Toshiba Corp | 変圧器 |
FR2713837B1 (fr) * | 1993-12-08 | 1996-01-12 | Merlin Gerin | Dispositif de protection pour transformateur. |
JP3532758B2 (ja) * | 1998-02-27 | 2004-05-31 | 三菱電機株式会社 | 計器用変成器 |
-
2001
- 2001-09-08 EP EP01121495A patent/EP1189249B1/de not_active Expired - Lifetime
- 2001-09-08 ES ES01121495T patent/ES2253312T3/es not_active Expired - Lifetime
- 2001-09-08 AT AT01121495T patent/ATE310312T1/de active
- 2001-09-08 DE DE50108068T patent/DE50108068D1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101350247B (zh) * | 2007-07-18 | 2010-09-08 | 大连北方互感器有限公司 | 电力机车用户外干式电压互感器 |
EP3373313A1 (de) | 2017-03-08 | 2018-09-12 | RITZ Instrument Transformers GmbH | Berstsicherer stromwandler, insbesondere für triebwagen |
Also Published As
Publication number | Publication date |
---|---|
EP1189249A3 (de) | 2002-11-27 |
DE50108068D1 (de) | 2005-12-22 |
ATE310312T1 (de) | 2005-12-15 |
ES2253312T3 (es) | 2006-06-01 |
EP1189249A2 (de) | 2002-03-20 |
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