EP1674732A2 - Explosion protection for non-electric device - Google Patents

Explosion protection for non-electric device Download PDF

Info

Publication number
EP1674732A2
EP1674732A2 EP05023602A EP05023602A EP1674732A2 EP 1674732 A2 EP1674732 A2 EP 1674732A2 EP 05023602 A EP05023602 A EP 05023602A EP 05023602 A EP05023602 A EP 05023602A EP 1674732 A2 EP1674732 A2 EP 1674732A2
Authority
EP
European Patent Office
Prior art keywords
housing
explosion protection
protection according
gas
enclosure
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.)
Granted
Application number
EP05023602A
Other languages
German (de)
French (fr)
Other versions
EP1674732B1 (en
EP1674732A3 (en
Inventor
Jochen Skatulla
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KSB AG
Original Assignee
KSB AG
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 KSB AG filed Critical KSB AG
Priority to PL05023602T priority Critical patent/PL1674732T3/en
Priority to SI200532019T priority patent/SI1674732T1/en
Publication of EP1674732A2 publication Critical patent/EP1674732A2/en
Publication of EP1674732A3 publication Critical patent/EP1674732A3/en
Application granted granted Critical
Publication of EP1674732B1 publication Critical patent/EP1674732B1/en
Priority to CY20151100957T priority patent/CY1116857T1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0077—Safety measures
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide

Definitions

  • the invention provides an explosion protection for a non-electric, hot in the operating state device or unit, in particular for a centrifugal pump for hot fluids.
  • explosion protection in short: explosion protection, for devices or units referred essentially to the ex-protection-compliant selection of electrical components and non-sparking material combinations of devices.
  • a new European guideline (RL 94/9 EC) now also considers non-electrical devices as sources of ignition with regard to their potential dangers and accordingly requires measures for safe use in potentially explosive areas. It must be ensured, among other things, that the surface temperature of the device or unit is below the maximum permissible ignition temperature of the relevant hazardous area.
  • the ignition temperatures are usually divided into temperature classes.
  • the invention is therefore an object of the invention to provide an ex-protection for a non-electric, hot in operation device or unit, which ensures high security with little effort.
  • the stated object is achieved by a the surface of the device by far enclosing enclosure, wherein a non-explosive, heat dissipating gas is passed with pressure in the enclosure and discharged through openings from the enclosure.
  • the invention makes use of a technique which is already known in its principle, but has hitherto been used for other purposes and with a different design: the encapsulation of machine aggregates, which was used in particular for reducing the noise emission.
  • the capsule was usually provided on its inner wall with a sound-absorbing layer.
  • the preferably made of metal, earthed housing of the invention shields the hot surface of the device or aggregate from the environment, wherein the gas supplied into the enclosure produces various effects: Around the device or aggregate around a Ex-free zone is created. Since the gas creates an overpressure in the enclosure, no gas, and thus no explosive atmosphere, can penetrate from the outside. Rather, a constant flow of the pumped gas is maintained to the outside, which otherwise results in a steady current to dissipate heat, which in turn keeps the surface temperature of the enclosure below the required limit.
  • the loading of the interior of the enclosure is preferably carried out by an inert gas.
  • an inert gas for example, nitrogen can be used. But it can also system air or non-Ex-ambient air are passed through a suitable conveyor system in the enclosure.
  • the discharge of the introduced gas from the enclosure can be done in various ways and in different ways. Preference is given to non-contacting gaps between the surface of the device and the housing. This has the advantage that temperature-resistant seals between the hot surface and the housing can be saved as well as a separate device for discharging the introduced gas.
  • a device for monitoring the pressure within the enclosure is recommended. This results in a very early warning device that reacts, inter alia, already on a deterioration in the promotion of the heat dissipating gas. An unacceptably high pressure build-up in the enclosure is thereby prevented.
  • a device for monitoring any leakage of the device or aggregate may be useful, as this also allows an early response to possible disturbances.
  • the drawing shows a driven by a separately mounted electric motor 1 centrifugal pump 2, which serves to promote a more than 200 ° C hot medium.
  • the housing 5 of the centrifugal pump 2 By entering via a suction nozzle 3 and exiting through a discharge nozzle 4 conveying medium, the housing 5 of the centrifugal pump 2 is heated after a certain delivery time to a maximum value, which would also be over 200 ° C in the event of failure.
  • the surface temperature of the assembly consisting of the electric motor 1 and the centrifugal pump 2 that is exposed to the atmosphere 6 must not exceed the limit of 200 ° C. at any point. To meet this requirement, the surface of the housing 5 must be shielded from the atmosphere 6.
  • the shielding of the housing 5 with respect to the atmosphere 6 is done by an enclosure 7, which encloses the hot zone and an adjacent cooler area of the centrifugal pump 2, but without having contact with the different surface areas. In fact, gaps 8 remain between the surface of the centrifugal pump 2 and the enclosure 7.
  • the housing 7 forms an explosion-proof room 9, which is fed via a pipe 10 with a non-explosive gas from a - not shown - source. It is ensured that the pressure in the space 9 is always above the pressure of the surrounding atmosphere 6. Therefore, no air from the environment can flow into the housing 7. Above all, however, there is a constant, over the column 8 effluent gas leakage from the room 9 in the area. Due to the constant flow of gas into the space 9 so creates a steady gas flow, which dissipates a portion of the existing heat in the room 9 in the environment 6. Starting temperature and amount of gas pressed into the space 9 are chosen so that the surface temperature of the enclosure 7 always remains below 200 ° C. This is monitored by means of a thermometer 11.
  • thermometer 12 the surface temperature of the pump housing 5 is monitored. This monitoring allows an early reaction to any disturbances, since an increase in the medium temperature is detected at this point rather than at the housing 7. Moreover, can be determined based on the temperature measured here, the time at which the housing 7 may be opened: this is the case when the pump temperature is 195 ° C or less.
  • a pressure switch 13 is also provided, with which the pressure in the room 9 is monitored. A malfunction in the system which supplies the gas to the room 9, too much leakage from the room 9 or an impermissible increase in pressure are indicated early, so that remedial measures can be taken in time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The explosion protection for centrifugal pump (2) has a facing which surrounds a space in the enclosure (7). A non-explosive heat conducting gas is fed with high pressure into the enclosure and discharged out of the enclosure via an opening (8). The gas fed into the enclosure is inert gas.

Description

Gegenstand der Erfindung ist ein Explosionsschutz für ein nichtelektrisches, im Betriebszustand heißes Gerät oder Aggregat, insbesondere für eine Kreiselpumpe für heiße Fördermedien.The invention provides an explosion protection for a non-electric, hot in the operating state device or unit, in particular for a centrifugal pump for hot fluids.

Der Explosionsschutz, kurz: Ex-Schutz, für Geräte oder Aggregate bezog sich in der Vergangenheit im wesentlichen auf die Ex-Schutz-konforme Auswahl elektrischer Bauteile und nichtfunkender Werkstoffkombinationen von Geräten. Durch eine neue europäische Richtlinie (RL 94/9 EG) werden nun auch nichtelektrische Geräte bezüglich ihres Gefahrenpotentials als Zündquelle betrachtet und dementsprechend Maßnahmen zum sicheren Einsatz im Ex-Bereich verlangt. So ist unter anderem sicherzustellen, daß die Oberflächentemperatur des Gerätes bzw. Aggregates unterhalb der maximal zulässigen Zündtemperatur des jeweils in Frage kommenden Ex-Bereiches liegt. Dabei werden die Zündtemperaturen üblicherweise in Temperaturklassen eingeteilt.In the past, explosion protection, in short: explosion protection, for devices or units referred essentially to the ex-protection-compliant selection of electrical components and non-sparking material combinations of devices. A new European guideline (RL 94/9 EC) now also considers non-electrical devices as sources of ignition with regard to their potential dangers and accordingly requires measures for safe use in potentially explosive areas. It must be ensured, among other things, that the surface temperature of the device or unit is below the maximum permissible ignition temperature of the relevant hazardous area. The ignition temperatures are usually divided into temperature classes.

Aufgrund der nun gültigen Regelung müssen fallweise auch für Kreiselpumpen mit hohen Mediumstemperaturen Maßnahmen für den Ex-Schutz getroffen werden. Dies gilt beispielsweise für Pumpen, deren Mediumstemperatur 200°C überschreitet, die aber in Temperaturklasse T3 mit einer maximal zulässigen Temperatur von 200°C betrieben werden sollen. Hier bieten sich auf den ersten Blick verschiedene Maßnahmen an, die aber unter Umständen aus unterschiedlichen Gründen verworfen werden müssen:

  • eine Isolierung der Pumpe ist unzulässig, da durch Leckage und Aufkonzentration eine Zündgefahr entstehen könnte;
  • eine effektive Kühlung der Pumpe durch ein Fremdmedium, z.B. Wasser, erfordert hohen zusätzlichen Aufwand, der oft nicht bereitgestellt werden kann;
  • eine "schwadenhemmende Kapselung" gemäß der europäischen Norm EN13463-3 ist bei bestimmten Ex-Zonen und aufgrund der komplexen Geometrie des abzudichtenden Gegenstandes häufig nicht anwendbar.
Due to the now valid regulation, precautionary measures must also be taken on a case by case basis for centrifugal pumps with high medium temperatures. This applies, for example, to pumps whose medium temperature exceeds 200 ° C, but which are to be operated in temperature class T3 with a maximum permissible temperature of 200 ° C. At first glance, various measures are available, but they may have to be discarded for different reasons:
  • Insulation of the pump is not permitted as leakage and concentration could cause a risk of ignition;
  • An effective cooling of the pump by a foreign medium, eg water, requires high additional effort, which often can not be provided;
  • a "anti-scale encapsulation" according to the European standard EN13463-3 is often not applicable for certain Ex zones and due to the complex geometry of the article to be sealed.

Der Erfindung liegt somit die Aufgabe zugrunde, einen Ex-Schutz für ein nichtelektrisches, im Betriebszustand heißes Gerät oder Aggregat zu schaffen, der bei geringem Aufwand eine hohe Sicherheit gewährleistet.The invention is therefore an object of the invention to provide an ex-protection for a non-electric, hot in operation device or unit, which ensures high security with little effort.

Die gestellte Aufgabe wird erfindungsgemäß gelöst durch eine die Oberfläche des Gerätes mit Abstand umschließende Einhausung, wobei ein nicht explosionsfähiges, Wärme abführendes Gas mit Überdruck in die Einhausung geleitet und über Öffnungen aus der Einhausung abgeführt wird.The stated object is achieved by a the surface of the device by far enclosing enclosure, wherein a non-explosive, heat dissipating gas is passed with pressure in the enclosure and discharged through openings from the enclosure.

Die Erfindung greift hier auf eine Technik zurück, die in ihrem Prinzip bereits bekannt ist, bisher jedoch für andere Zwecke und mit anderer Gestaltung verwandt wurde: die Kapselung von Maschinenaggregaten, die insbesondere zur Reduzierung der Geräuschemission eingesetzt wurde. Zu diesem Zweck war die Kapsel meist an ihrer Innenwandung noch mit einer schalldämpfenden Schicht versehen.The invention makes use of a technique which is already known in its principle, but has hitherto been used for other purposes and with a different design: the encapsulation of machine aggregates, which was used in particular for reducing the noise emission. For this purpose, the capsule was usually provided on its inner wall with a sound-absorbing layer.

Die vorzugsweise aus Metall bestehende, geerdete Einhausung der Erfindung schirmt die heiße Oberfläche des Gerätes oder Aggregates gegenüber der Umgebung ab, wobei durch das in die Einhausung geförderte Gas verschiedene Wirkungen erzeugt werden: Um das Gerät oder Aggregat herum wird eine Ex-freie Zone geschaffen. Da durch das Gas ein Überdruck in der Einhausung erzeugt wird, kann kein Gas, also auch keine Ex-Atmosphäre, von außen eindringen. Vielmehr wird ein ständiger Strom des geförderten Gases nach außen aufrechterhalten, womit sich im übrigen ein stetiger Strom zur Abführung von Wärme ergibt, was wiederum die Oberflächentemperatur der Einhausung unter dem geforderten Grenzwert hält.The preferably made of metal, earthed housing of the invention shields the hot surface of the device or aggregate from the environment, wherein the gas supplied into the enclosure produces various effects: Around the device or aggregate around a Ex-free zone is created. Since the gas creates an overpressure in the enclosure, no gas, and thus no explosive atmosphere, can penetrate from the outside. Rather, a constant flow of the pumped gas is maintained to the outside, which otherwise results in a steady current to dissipate heat, which in turn keeps the surface temperature of the enclosure below the required limit.

Die Beaufschlagung des Innenraumes der Einhausung erfolgt vorzugsweise durch ein inertes Gas. So kann beispielsweise Stickstoff verwendet werden. Es kann aber auch Systemluft oder Nicht-Ex-Umgebungsluft durch ein geeignetes Fördersystem in die Einhausung geleitet werden.The loading of the interior of the enclosure is preferably carried out by an inert gas. For example, nitrogen can be used. But it can also system air or non-Ex-ambient air are passed through a suitable conveyor system in the enclosure.

Die Abführung des eingeleiteten Gases aus der Einhausung kann auf verschiedene Weise und auf verschiedenen Wegen erfolgen. Bevorzugt werden nichtberührende Spalte zwischen der Oberfläche des Gerätes und der Einhausung. Dies hat den Vorteil, daß temperaturbeständige Dichtungen zwischen der heißen Oberfläche und der Einhausung ebenso eingespart werden wie eine separate Vorrichtung zur Abführung des eingeleiteten Gases.The discharge of the introduced gas from the enclosure can be done in various ways and in different ways. Preference is given to non-contacting gaps between the surface of the device and the housing. This has the advantage that temperature-resistant seals between the hot surface and the housing can be saved as well as a separate device for discharging the introduced gas.

Zur Erreichung einer erhöhten Sicherheit wird empfohlen, eine Vorrichtung zur Überwachung der Oberflächentemperatur des Gerätes und der Einhausung vorzusehen. Hierdurch wird nicht nur die Einhaltung einer vorgeschriebenen Maximaltemperatur sichergestellt. Überdies werden Störungen, die sich durch einen Temperaturanstieg bemerkbar machen, frühzeitig erkannt, was wiederum die Übermittlung eines Störsignals und/oder die frühzeitige Abschaltung des betroffenen Gerätes oder Aggregates ermöglicht.For increased safety, it is recommended to provide a device for monitoring the surface temperature of the device and the enclosure. This not only ensures compliance with a prescribed maximum temperature. Moreover, disturbances which become noticeable due to an increase in temperature are detected early, which in turn makes it possible to transmit an interference signal and / or to switch off the affected device or aggregate early.

Außerdem wird eine Vorrichtung zur Überwachung des Druckes innerhalb der Einhausung empfohlen. Hierdurch ergibt sich eine sehr früh ansprechende Warneinrichtung, die unter anderem bereits auf eine Beeinträchtigung in der Förderung des Wärme abführenden Gases reagiert. Ein unzulässig hoher Druckaufbau in der Einhausung wird hierdurch verhindert.In addition, a device for monitoring the pressure within the enclosure is recommended. This results in a very early warning device that reacts, inter alia, already on a deterioration in the promotion of the heat dissipating gas. An unacceptably high pressure build-up in the enclosure is thereby prevented.

Schließlich kann auch eine Vorrichtung zur Überwachung etwaiger Leckagen des Gerätes oder Aggregates von Nutzen sein, da auch diese ein frühzeitiges Reagieren auf mögliche Störungen erlaubt.Finally, a device for monitoring any leakage of the device or aggregate may be useful, as this also allows an early response to possible disturbances.

Anhand eines Ausführungsbeispiels wird die Erfindung näher erläutert. Die Zeichnung zeigt eine durch einen separat aufgestellten Elektromotor 1 angetriebene Kreiselpumpe 2, die der Förderung eines mehr als 200°C heißen Mediums dient.Reference to an embodiment of the invention will be explained in more detail. The drawing shows a driven by a separately mounted electric motor 1 centrifugal pump 2, which serves to promote a more than 200 ° C hot medium.

Durch das über einen Saugstutzen 3 eintretende und über einen Druckstutzen 4 austretende Fördermedium wird das Gehäuse 5 der Kreiselpumpe 2 nach einer gewissen Förderdauer auf einen Maximalwert erhitzt, der bei nicht erfolgender Kühlung ebenfalls über 200°C läge. Um in der Ex-Temperaturklasse T3 einsetzbar zu sein, darf aber die der Atmosphäre 6 ausgesetzte Oberflächentemperatur des aus Elektromotor 1 und Kreiselpumpe 2 bestehenden Aggregates an keiner Stelle die Grenze von 200°C überschreiten. Um dieser Forderung zu genügen, muß die Oberfläche des Gehäuses 5 gegenüber der Atmosphäre 6 abgeschirmt werden. Dies kann allerdings nicht in einer Weise geschehen, wie bei den mit dem Saugstutzen 3 und dem Druckstutzen 4 der Kreiselpumpe 2 verbundenen - hier nicht dargestellten - Rohrleitungen, nämlich durch eine auf der Oberfläche angebrachte Isolierung. Würde nämlich am Pumpengehäuse 5 eine nicht mit Sicherheit auszuschließende Leckage auftreten, entstände eine Zündgefahr.By entering via a suction nozzle 3 and exiting through a discharge nozzle 4 conveying medium, the housing 5 of the centrifugal pump 2 is heated after a certain delivery time to a maximum value, which would also be over 200 ° C in the event of failure. In order to be able to be used in the Ex-temperature class T3, however, the surface temperature of the assembly consisting of the electric motor 1 and the centrifugal pump 2 that is exposed to the atmosphere 6 must not exceed the limit of 200 ° C. at any point. To meet this requirement, the surface of the housing 5 must be shielded from the atmosphere 6. However, this can not be done in a manner such as in the connected to the suction nozzle 3 and the discharge nozzle 4 of the centrifugal pump 2 - not shown here - pipelines, namely by an attached to the surface insulation. If a leakage which can not be excluded with certainty on the pump housing 5 would cause a risk of ignition.

Die Abschirmung des Gehäuses 5 gegenüber der Atmosphäre 6 geschieht durch eine Einhausung 7, die die heiße Zone und einen angrenzenden kühleren Bereich der Kreiselpumpe 2 umschließt, ohne jedoch Kontakt mit den verschiedenen Oberflächenbereichen zu haben. Tatsächlich verbleiben Spalte 8 zwischen der Oberfläche der Kreiselpumpe 2 und der Einhausung 7.The shielding of the housing 5 with respect to the atmosphere 6 is done by an enclosure 7, which encloses the hot zone and an adjacent cooler area of the centrifugal pump 2, but without having contact with the different surface areas. In fact, gaps 8 remain between the surface of the centrifugal pump 2 and the enclosure 7.

Die Einhausung 7 bildet einen Ex-geschützten Raum 9, der über eine Rohrleitung 10 mit einem nicht explosionsfähigen Gas aus einer - nicht dargestellten - Quelle beschickt wird. Dabei ist sichergestellt, daß der Druck im Raum 9 stets über dem Druck der umgebenden Atmosphäre 6 liegt. Daher kann keine Luft aus der Umgebung in die Einhausung 7 einströmen. Vor allem aber ergibt sich eine ständige, über die Spalte 8 abfließende Leckage des Gases aus dem Raum 9 in die Umgebung. Aufgrund des ebenfalls ständigen Nachfließens von Gas in den Raum 9 entsteht so ein steter Gasstrom, der einen Teil der im Raum 9 vorhandenen Wärme in die Umgebung 6 abführt. Ausgangstemperatur und Menge des in den Raum 9 gedrückten Gases sind so gewählt, daß die Oberflächentemperatur der Einhausung 7 stets unterhalb von 200°C bleibt. Dies wird mit Hilfe eines Thermometers 11 überwacht.The housing 7 forms an explosion-proof room 9, which is fed via a pipe 10 with a non-explosive gas from a - not shown - source. It is ensured that the pressure in the space 9 is always above the pressure of the surrounding atmosphere 6. Therefore, no air from the environment can flow into the housing 7. Above all, however, there is a constant, over the column 8 effluent gas leakage from the room 9 in the area. Due to the constant flow of gas into the space 9 so creates a steady gas flow, which dissipates a portion of the existing heat in the room 9 in the environment 6. Starting temperature and amount of gas pressed into the space 9 are chosen so that the surface temperature of the enclosure 7 always remains below 200 ° C. This is monitored by means of a thermometer 11.

Durch ein Thermometer 12 wird die Oberflächentemperatur des Pumpengehäuses 5 überwacht. Diese Überwachung erlaubt ein frühzeitiges Reagieren auf etwaige Störungen, da ein Ansteigen der Mediumstemperatur an dieser Stelle eher erkannt wird als an der Einhausung 7. Im übrigen läßt sich anhand der hier gemessenen Temperatur der Zeitpunkt bestimmen, zu dem die Einhausung 7 geöffnet werden darf: dies ist der Fall, wenn die Pumpentemperatur 195°C oder weniger beträgt.By a thermometer 12, the surface temperature of the pump housing 5 is monitored. This monitoring allows an early reaction to any disturbances, since an increase in the medium temperature is detected at this point rather than at the housing 7. Moreover, can be determined based on the temperature measured here, the time at which the housing 7 may be opened: this is the case when the pump temperature is 195 ° C or less.

Schließlich ist auch noch ein Druckwächter 13 vorgesehen, mit dem der Druck im Raum 9 überwacht wird. Eine Störung in dem System, welches das Gas für den Raum 9 liefert, eine zu starke Leckage aus dem Raum 9 oder ein unzulässiger Druckanstieg werden frühzeitig angezeigt, so daß abhelfende Maßnahmen rechtzeitig eingeleitet werden können.Finally, a pressure switch 13 is also provided, with which the pressure in the room 9 is monitored. A malfunction in the system which supplies the gas to the room 9, too much leakage from the room 9 or an impermissible increase in pressure are indicated early, so that remedial measures can be taken in time.

Claims (8)

Explosionsschutz für ein nichtelektrisches, im Betriebszustand heißes Gerät oder Aggregat, insbesondere für eine Kreiselpumpe (2) für heiße Fördermedien, gekennzeichnet durch eine die Oberfläche des Gerätes oder Aggregates (2) mit Abstand umschließende Einhausung (7), wobei ein nicht explosionsfähiges, Wärme abführendes Gas mit Überdruck in die Einhausung (7) geleitet und über Öffnungen (8) aus der Einhausung (7) abgeführt wird.Explosion protection for a non-electric device or unit hot when in operation, in particular for a centrifugal pump (2) for hot fluids, characterized by a housing (7) surrounding the surface of the device or unit (2) at a distance, wherein a non-explosive, heat dissipating Gas with positive pressure in the housing (7) passed and via openings (8) from the housing (7) is discharged. Explosionsschutz nach Anspruch 1, dadurch gekennzeichnet, daß ein inertes Gas in die Einhausung (7) geleitet wird.Explosion protection according to claim 1, characterized in that an inert gas is conducted into the housing (7). Explosionsschutz nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß für die Abführung des eingeleiteten Gases nichtberührende Spalte (8) zwischen der Oberfläche des Gerätes oder Aggregates (2) und der Einhausung (7) vorgesehen sind.Explosion protection according to claim 1 or 2, characterized in that for the discharge of the introduced gas non-contacting column (8) between the surface of the device or unit (2) and the housing (7) are provided. Explosionsschutz nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die zwischen der Oberfläche des Gerätes oder Aggregates (2) und der Einhausung (7) vorhandenen Spalte (8) mit einem temperaturbeständigen isolierenden Dichtmittel verschlossen sind, wobei für die Abführung des eingeleiteten Gases eine separate Vorrichtung vorgesehen ist.Explosion protection according to claim 1 or 2, characterized in that between the surface of the device or unit (2) and the housing (7) existing gap (8) are sealed with a temperature-resistant insulating sealant, wherein for the discharge of the introduced gas a separate Device is provided. Explosionsschutz nach einem der vorangegangenen Ansprüche, gekennzeichnet durch eine Vorrichtung (11, 12) zur Überwachung der Oberflächentemperatur des Gerätes oder Aggregates (2) und der Einhausung (7).Explosion protection according to one of the preceding claims, characterized by a device (11, 12) for monitoring the surface temperature of the device or unit (2) and the housing (7). Explosionsschutz nach einem der vorangegangenen Ansprüche, gekennzeichnet durch eine Vorrichtung (13) zur Überwachung des Druckes innerhalb der Einhausung (7).Explosion protection according to one of the preceding claims, characterized by a device (13) for monitoring the pressure within the housing (7). Explosionsschutz nach einem der vorangegangenen Ansprüche, gekennzeichnet durch eine Vorrichtung zur Überwachung etwaiger Leckagen des Gerätes oder Aggregates (2).Explosion protection according to one of the preceding claims, characterized by a device for monitoring any leakage of the device or unit (2). Explosionsschutz nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß die Einhausung (7) aus Metall besteht und geerdet ist.Explosion protection according to one of the preceding claims, characterized in that the housing (7) consists of metal and is earthed.
EP05023602.5A 2004-12-21 2005-10-28 Explosion protection for non-electric device Not-in-force EP1674732B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL05023602T PL1674732T3 (en) 2004-12-21 2005-10-28 Explosion protection for non-electric device
SI200532019T SI1674732T1 (en) 2004-12-21 2005-10-28 Explosion protection for non-electric device
CY20151100957T CY1116857T1 (en) 2004-12-21 2015-10-27 EXTERNAL PROTECTION PROTECTION FOR NON-ELECTRICAL APPLIANCES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004061366A DE102004061366A1 (en) 2004-12-21 2004-12-21 Explosion protection for a non-electrical device

Publications (3)

Publication Number Publication Date
EP1674732A2 true EP1674732A2 (en) 2006-06-28
EP1674732A3 EP1674732A3 (en) 2009-05-27
EP1674732B1 EP1674732B1 (en) 2015-07-29

Family

ID=35429622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05023602.5A Not-in-force EP1674732B1 (en) 2004-12-21 2005-10-28 Explosion protection for non-electric device

Country Status (9)

Country Link
EP (1) EP1674732B1 (en)
CY (1) CY1116857T1 (en)
DE (1) DE102004061366A1 (en)
DK (1) DK1674732T3 (en)
ES (1) ES2550427T3 (en)
HU (1) HUE026420T2 (en)
PL (1) PL1674732T3 (en)
PT (1) PT1674732E (en)
SI (1) SI1674732T1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113648566A (en) * 2021-09-15 2021-11-16 江苏智远智能驱动技术研究院有限公司 Special motor that security performance is high

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008003984B4 (en) * 2008-01-11 2011-06-22 MAICO Elektroapparate-Fabrik GmbH, 78056 tubefan

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2075643A (en) 1980-03-20 1981-11-18 Brunn Gmbh & Co Kg Sound and/or heat insulated machine housing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700576A (en) * 1986-03-13 1987-10-01 Olajipari Foevallal Tervezoe DEVICE FOR HEATING A MEDIUM IN AN EXPLOSION AREA.
US5192194A (en) * 1991-04-23 1993-03-09 Air Engineers, Inc. Explosion proof compressor and a method for explosion proofing a compressor
US5336064A (en) * 1993-12-06 1994-08-09 Westinghouse Electric Corporation Electric motor driven pump
DE4418158C5 (en) * 1994-05-25 2004-03-25 Hans Peter Dipl.-Ing. Gönnheimer Device for operating electrical devices in an ignitable atmosphere
ATE175006T1 (en) * 1995-04-24 1999-01-15 Svanehoj International A S SAFETY PUMP SYSTEM
DE29602949U1 (en) * 1996-02-20 1996-07-04 E.L.B. Explosionsschutzgeräte Bachmann GmbH & Co., 64625 Bensheim Ignition protection gas monitoring device
DE19831764C1 (en) * 1998-07-15 2000-03-09 Siemens Ag Over-pressure casing for electric instrument
DE10341425A1 (en) * 2003-09-09 2005-03-31 Bosch Rexroth Ag Hydraulic unit with a reservoir for hydraulic fluid and with a motor-pump unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2075643A (en) 1980-03-20 1981-11-18 Brunn Gmbh & Co Kg Sound and/or heat insulated machine housing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113648566A (en) * 2021-09-15 2021-11-16 江苏智远智能驱动技术研究院有限公司 Special motor that security performance is high

Also Published As

Publication number Publication date
EP1674732B1 (en) 2015-07-29
DE102004061366A1 (en) 2006-07-06
CY1116857T1 (en) 2017-04-05
HUE026420T2 (en) 2016-05-30
EP1674732A3 (en) 2009-05-27
PT1674732E (en) 2015-11-02
PL1674732T3 (en) 2015-12-31
SI1674732T1 (en) 2015-11-30
ES2550427T3 (en) 2015-11-06
DK1674732T3 (en) 2015-10-26

Similar Documents

Publication Publication Date Title
DE102009012038B4 (en) Shaft seal for a turbomachine
EP3433921B1 (en) Electric machine having a cooling device
EP3485205B1 (en) Cooling module
WO2014154474A1 (en) Electronics protection housing for accommodating electronics
EP1674732B1 (en) Explosion protection for non-electric device
DE102016108840B4 (en) Temperature control device and method of manufacturing a temperature control device
EP1088383B1 (en) Method for guiding explosive gases formed inside a housing through flameproof joints, and explosion-protected housing
DE102010027757B4 (en) Feedthrough for a machine element
EP2802194B1 (en) Pressure-tightly encapsulated housing comprising a cooling device
EP2772651A2 (en) Pump
DE102009058311A1 (en) Industrial furnace with a rotary tube
DE102021118835A1 (en) Fan module for a soldering system, in particular for a reflow soldering system and reflow soldering system
DE102015212030A1 (en) Device for the automatic supply of lubricant
DE10113251A1 (en) Pressure generator for flowing media
DE10315672B4 (en) Explosion-proof device in the form of a power and / or work machine
EP1515041B1 (en) Hydraulic unit with a container for hydraulic liquid and with a motor-pump unit
EP3709484A1 (en) Encapsulated electrical machine with external liquid cooling circuit
DE102018008986A1 (en) Temperature detection device
DE102017223813A1 (en) Electric machine and power steering
EP0183024B1 (en) Apparatus for the avoidance of local overheating of measuring transducers
DE10116868A1 (en) Magnetic drive pump
DE2537598A1 (en) FIRE DETECTOR
DE9116930U1 (en) Device for protecting electrically heated vacuum furnaces
DE3533750C1 (en) Explosion-proof and/or flameproof electrical power supply unit having an alternator which is driven by compressed air
EP2249042A1 (en) Immersion pump

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20091111

17Q First examination report despatched

Effective date: 20100107

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150408

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 739544

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150815

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502005014870

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

Effective date: 20151021

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20151014

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2550427

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20151106

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: EE

Ref legal event code: FG4A

Ref document number: E011177

Country of ref document: EE

Effective date: 20151005

REG Reference to a national code

Ref country code: PL

Ref legal event code: T3

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151129

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20150402130

Country of ref document: GR

Effective date: 20151209

REG Reference to a national code

Ref country code: SK

Ref legal event code: T3

Ref document number: E 19796

Country of ref document: SK

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502005014870

Country of ref document: DE

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E026420

Country of ref document: HU

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150729

26N No opposition filed

Effective date: 20160502

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LT

Payment date: 20160922

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SK

Payment date: 20160929

Year of fee payment: 12

Ref country code: PL

Payment date: 20160930

Year of fee payment: 12

Ref country code: PT

Payment date: 20160926

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20161024

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20161022

Year of fee payment: 12

Ref country code: IE

Payment date: 20161020

Year of fee payment: 12

Ref country code: FI

Payment date: 20161024

Year of fee payment: 12

Ref country code: GB

Payment date: 20161024

Year of fee payment: 12

Ref country code: NL

Payment date: 20161020

Year of fee payment: 12

Ref country code: FR

Payment date: 20161022

Year of fee payment: 12

Ref country code: CH

Payment date: 20161022

Year of fee payment: 12

Ref country code: EE

Payment date: 20161025

Year of fee payment: 12

Ref country code: HU

Payment date: 20160920

Year of fee payment: 12

Ref country code: CZ

Payment date: 20160930

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20161006

Year of fee payment: 12

Ref country code: ES

Payment date: 20161026

Year of fee payment: 12

Ref country code: BG

Payment date: 20161028

Year of fee payment: 12

Ref country code: GR

Payment date: 20161027

Year of fee payment: 12

Ref country code: LV

Payment date: 20161031

Year of fee payment: 12

Ref country code: SI

Payment date: 20160922

Year of fee payment: 12

Ref country code: BE

Payment date: 20161020

Year of fee payment: 12

Ref country code: IT

Payment date: 20161031

Year of fee payment: 12

Ref country code: SE

Payment date: 20161022

Year of fee payment: 12

Ref country code: AT

Payment date: 20161026

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20161026

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CY

Payment date: 20161003

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20171017

Year of fee payment: 13

REG Reference to a national code

Ref country code: EE

Ref legal event code: MM4A

Ref document number: E011177

Country of ref document: EE

Effective date: 20171031

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20171031

REG Reference to a national code

Ref country code: LT

Ref legal event code: MM4D

Effective date: 20171028

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20171101

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 739544

Country of ref document: AT

Kind code of ref document: T

Effective date: 20171028

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20171028

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 19796

Country of ref document: SK

Effective date: 20171028

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180430

Ref country code: SK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: LT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171101

Ref country code: EE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20180605

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20171031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171029

Ref country code: HU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171029

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

Ref country code: SI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171029

Ref country code: RO

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180504

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171031

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20181221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180506

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005014870

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171028