EP1528342B1 - Procédé pour séchage de matériau et dispositif pour mettre en oeuvre le procédé - Google Patents

Procédé pour séchage de matériau et dispositif pour mettre en oeuvre le procédé Download PDF

Info

Publication number
EP1528342B1
EP1528342B1 EP04405298A EP04405298A EP1528342B1 EP 1528342 B1 EP1528342 B1 EP 1528342B1 EP 04405298 A EP04405298 A EP 04405298A EP 04405298 A EP04405298 A EP 04405298A EP 1528342 B1 EP1528342 B1 EP 1528342B1
Authority
EP
European Patent Office
Prior art keywords
solvent
flow
vapour
vacuum tank
heated
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
Application number
EP04405298A
Other languages
German (de)
English (en)
Other versions
EP1528342A3 (fr
EP1528342A2 (fr
Inventor
Paul Gmeiner
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34424789&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1528342(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to EP04405298A priority Critical patent/EP1528342B1/fr
Publication of EP1528342A2 publication Critical patent/EP1528342A2/fr
Publication of EP1528342A3 publication Critical patent/EP1528342A3/fr
Application granted granted Critical
Publication of EP1528342B1 publication Critical patent/EP1528342B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F26B21/40—Arrangements for supplying or controlling air or other gases for drying solid materials or objects using gases other than air
    • F26B21/471—Arrangements for supplying or controlling air or other gases for drying solid materials or objects using gases other than air condensing vapours onto the surface of the materials to be dried

Definitions

  • the invention is based on a process for drying of good, in particular of solid insulation of an electrical device, according to the preamble of claim 1.
  • the invention also relates to an apparatus for performing the method.
  • the method of the type mentioned is DE 30 14 831 A removable.
  • a described in this prior art, working by the Vapor phase method drying device for isolierölgetränkte insulations has a the insulators to be dried receiving evacuated autoclave in which a cascade evaporator is arranged.
  • This cascade evaporator is oriented substantially vertically and includes a limited by a plate and a partition flow channel. On the plate heating coils and baffles are arranged.
  • the cascade evaporator is fed by means of a pump solvent, which was heated in a preheater located outside the autoclave.
  • the preheated solvent trickles with the cooperation of the baffles along the plate from top to bottom.
  • the solvent evaporates on the heating coils.
  • the forming solvent vapor flows vertically upward due to the chimney effect in the flow channel and is conducted via a steam inlet into the usable space of the autoclave containing the insulations.
  • the present invention is based on the object of reducing the energy consumption and the throughput time of the method of the type mentioned above and at the same time to provide devices which are particularly suitable for carrying out this method.
  • the solvent introduced into the vacuum container and heated is injected into a flow channel designed in the manner of a venturi nozzle.
  • a predominantly solvent vapor containing and guided by a bottleneck of the flow channel jet is formed, which mixes intensively due to suction with an existing already in the vacuum tank content of solvent vapor.
  • the temperature of the solvent vapor passing out of the flow channel can be controlled very precisely.
  • optimal circulation and turbulence of the solvent vapor in the vacuum container are ensured by the flow excited by the jet. As a result, the amount of energy required for heating the drying material and the heating time are greatly reduced.
  • the reduction of the heating time is mainly due to the fact that a large circulating amount of solvent vapor and thus a high solvent vapor velocity is maintained even at the end of the heating phase in the vacuum container by strong during the entire heating phase virtually constant injection of heated solvent in the flow channel.
  • the process does not require any elaborate additional components in addition to the components required in conventional processes.
  • a particularly short cycle time is achieved when the heated solvent is injected into a solvent vapor stream passed through the venturi.
  • the velocity and turbulence of the solvent vapor stream passing in the venturi are substantially increased.
  • the increased solvent vapor velocity is also maintained towards the end of the heating phase due to the effect of jetting, which ensures a shorter heating time in the upper temperature range and an even smaller temperature difference across the drying object, thereby significantly improving the quality of the drying.
  • the aforesaid solvent vapor stream guided in the venturi nozzle is produced in an evaporator arranged in the vacuum container, since then by the Jet Sign of the injected solvent of the solvent vapor generated by the evaporator is rapidly sucked away from the evaporator, which leads to smaller pressure drop in this evaporator and thus to increased efficiency.
  • the solvent vapor stream can also be generated in an evaporator arranged outside the vacuum container and guided through the wall into the interior of the vacuum container.
  • the Jet Sign then the solvent vapor is better sucked from a guided into the vacuum tank solvent vapor line, which leads to smaller pressure drop between the external evaporator and vacuum tank and thus also to increased efficiency.
  • the heated solvent is injected into the flow channel at the constriction of the Venturi nozzle.
  • the solvent injected into the flow channel has a particularly high velocity. This high speed causes a large negative pressure and thus a strong jet effect, i. a particularly strong suction of a mixed vapor stream of solvent and water vapor formed in the vacuum container during the heating of the material to be dried in the injected solvent.
  • the mixing ratio of injected hot solvent to the mixed vapor already flowing in the vacuum container can also be changed. It can thus be controlled with great speed and good accuracy, the temperature of the emerging from the flow channel Solventdampfstroms.
  • the method according to the invention is characterized by a particularly high level of efficiency when cold solvent is injected into the mixed steam stream carried in the interior of the vacuum vessel.
  • cold solvent for example into a condensation chamber arranged in the vacuum container
  • part of the solvent vapor present in the mixed steam is sucked in by jet action and condensed.
  • the proportion of water vapor in the condensation chamber increases and, consequently, less solvent vapor must be present in a condenser outside the vacuum container than condensate are deposited, whereby the energy consumption of the process is further reduced.
  • the cold solvent is injected into the mixed steam flow in the direction of flow, the mixed steam is strongly sucked in because of the blasting effect and, as a result of intensive mixing, a high degree of heat recuperation is achieved by heating the injected cold solvent.
  • a further reduction in the energy requirement of the method according to the invention is achieved in that the mixed steam flow is conducted out of the vacuum tank and condensed outside the tank into two or more stages, and heating air is heated with the heat of condensation emitted in a first of the stages when condensing mixed steam is condensed.
  • the solvent steam generator contains a flow channel arranged in the interior of the vacuum vessel and designed in the manner of a venturi nozzle and a flow channel the flow channel guided device for injecting heated solvent in the flow channel.
  • this device is characterized when the injection device opens at the bottleneck of the venturi into the flow channel.
  • Particularly expedient embodiments of the injection device include a solvent distribution channel which opens into the flow channel with injection openings and / or at least one injection nozzle held in the interior of the flow channel.
  • Heating energy can be saved and thus the efficiency of the method can be further improved if the heating device provided for heating the vacuum container is designed as a flow heater for the solvent.
  • a simple control of the temperature and mixing ratio of the solvent vapor emerging from the flow channel can be achieved in that a directional plate delimiting the flow channel is designed to be adjustable while changing the inflow and / or outflow cross section of the flow channel.
  • this condensation chamber is designed as a flow channel for the mixed gas and has on the inflow side acting as an inflow channel of a venturi sheet and / or a drain plate and / or downstream a baffle.
  • the required heating energy is additionally reduced by the fact that the condensation device has an air-cooled condenser arranged outside the vacuum container for generating heating air.
  • the vacuum container is designed as a housing of a transformer and arranged in a preferably heatable with air isolierhaus.
  • the drying devices shown in the figures are used for drying of goods, in particular the solid insulation of one or more electrical devices and the removal of possibly existing in the insulation insulating oil.
  • the 1 contains a vacuum-tight container 1 which is loaded with an electrical device containing solid insulation, for example a transformer, or, as shown, only with its active part 1.1 containing the solid-state insulation.
  • the vacuum container 1 can be heated by means of heating pipes 2.
  • the heating energy is transmitted in a heat generator 3 to a flowing in the tubes 2 heat transfer medium for heating the vacuum container 1.
  • the heating tubes 2 are surrounded by a double jacket and together with the jacket form a solvent heater 4 of a solvent steam generator. In the solvent heater, cold solvent is heated.
  • the solvent is generally a light oil having a significantly higher boiling point than water and a substantially lower boiling point than an insulating oil optionally present in the solid insulation.
  • the heated solvent is fed via a not shown in Figure 1 Solventitatistechnisch in a lying within the vacuum container 1, optionally tubular, Solventverteilkanal 5 of the solvent steam generator.
  • the solvent distribution channel 5 can be advantageously designed as an exposed tube with injection openings and or injectors. As a result, a cost-effective device is achieved.
  • the solvent distribution channel 5 has injection openings or injection nozzles for the solvent.
  • the narrowest cross section of a flow channel 5.2 designed in the manner of a Venturi nozzle is formed, which is formed by a suitably curved straightening plate 6, an outer wall of the solvent distribution channel 5 and the wall of the vacuum container 1.
  • the straightening plate 6 can be changed by turning and / or moving in its position.
  • the inflow cross section located upstream of the nozzle throat of the Venturi nozzle and the outflow cross section of the flow channel 5.2 located downstream of the nozzle throat can be increased or reduced.
  • the vacuum container 1 has at the bottom in its bottom an outlet opening for condensed solvent, which opens into a drain container 7, as well as any insulating oil which may have been washed out of the solid insulation by the solvent.
  • drain tank 7 a executed as a switch level indicator 7.1 is arranged.
  • the drain tank 7 is connected via shut-off valve 20.1 with a feed pump 8.
  • the outlet of the feed pump 8 is connected via shut-off valve 20.3 with the Solventerhitzer 4 or alternatively via shut-off valve 20.6 with a Solventvorratstank 9 or via shut-off valve 20.7 with an oil tank 19 for receiving the optionally existing insulating oil, which was removed during drying of the material to be dried 1.1 by the solvent from the solid insulation and was subsequently separated by distillation from the solvent.
  • a condensation device is arranged in the vacuum container 1 with a condensation chamber 10 for heat recuperation, a baffle 10.1, baffles 10.2 and injectors 11.
  • the condensation chamber 10 is open down to the interior of the vacuum container 1 and has at its upper end a through Wall of the container 1 guided outlet opening 10.3, which leads via a mixing steam line 15 and a Dampfabsperrventil 20 to a mixed steam condenser 16.
  • the mixed steam condenser 16 has two outlets, one of which is connected to a vacuum system 18 and the other via a shut-off valve 21 to a separation tank 17.
  • the separation tank 17 has two outputs, one of which acts on a drainage valve serving water 22 and the other is connected to the input of a Solvent technicallypumpe 8.1, whose output either via a check valve 20.5 to the injection nozzles 11, or via shut-off valves 20.4 and 20.6 leads to the solvent reservoir tank 9.
  • the heated solvent can emerge as an intensive solvent flow 5.3 from the solvent distribution channel 5 into the flow channel 5.2 and there with a solvent and steam containing mixed steam from the container interior to a steam containing predominantly solvent vapor 5.4 unite.
  • the flow channel 5.2 can over the extend entire length and / or width of a wall of the container and possibly also consist of several short sections. If the solvent distribution channel is designed as an exposed tube with injection openings or injection nozzles, then the mixed vapor emerging from the distribution tube, expanding and partially evaporating solvent, the mixing steam in the flow channel sucked in on both sides of the manifold.
  • the heating pipes 2 of the Solventerhitzers 4 predominantly oriented horizontally and the flow channel 5.2 limiting straightening plate 6 is rotatable.
  • the rotation of the straightening plate 6 can be achieved by a mechanical adjusting device 6.2, which acts via a lever mechanism on the rotatably mounted at a point 6.1 straightening plate 6.
  • the straightening plate between two positions 5.5 resp.
  • FIGS. 4 and 5 The construction of two embodiments of the condensation device contained in the drying apparatus according to FIG. 1 can be seen in FIGS. 4 and 5.
  • cold solvent 14 is guided via a solvent line 14.3 connected to the shut-off valve 20.5 to the injection nozzles 11 and injected in the opposite direction to a mixed steam stream 13 which passes from below into the condensation space 10 and contains solvent and water vapor.
  • This leads to an advantageous intensive turbulence of the injected cold solvent 14 with the mixed vapor stream 13 sucked into the condensation chamber 10.
  • the condensation of solvent vapor 14.1 from the Mixed steam flow 13 at the injected cold solvent 14 optimized.
  • the injected solvent 14 and the condensed solvent vapor 14.1 flow to the drainage vessel 7 and are pumped off with the feed pump 8 while remaining mixed steam 14.2 is removed from the mixed steam flow 13 via the mixing steam line 15 from the condensation space 10 and fed to a mixed steam condenser 16.
  • cold solvent 14 is injected via the injection nozzles 11, 11.1 in the same direction as the mixed steam flow 13 in the latter.
  • a straightening plate 12 attached to the inlet of the condensation space 10 and delimiting the inflow side of a nozzle, a strong flow is caused, which sucks the mixed steam as stream 13 from the interior of the vacuum container 1 into the condensation space 10.
  • the condensation section is slightly extended.
  • At least one baffle 10.2 is mounted in front of the outlet opening 10.3, so that any solvent drops are deposited.
  • the operation of the device is as follows: With the vacuum system 18, the vacuum container 1, the mixed steam condenser 16 and the separation tank 17 are evacuated. At the same time, the solvent supply tank 9 draws solvent via the shut-off valves 20.6 and 20.3 and the solvent heater 4 into the vacuum container 1 until the filling level indicator 7.1 is flooded.
  • the solvent present in the vacuum tank 1 is circulated by the feed pump 8 and heated in the solvent heater 4 to a temperature slightly above a predetermined drying temperature. The heated solvent is heated to normal or possibly higher pressure.
  • the pressure in the solvent 5.3 drops sharply and evaporates a portion of the heated solvent with simultaneous cooling by the amount of its heat of vaporization.
  • the resulting solvent vapor 5.4 condenses on the active part and heats it with simultaneous evaporation of the water contained in the solid insulation, resulting in the formation of the solvent and steam containing mixed steam in the vacuum vessel 1.
  • resulting and optionally insulating solvent-containing solvent condensate is fed back to the Solventverteilkanal 5 with the feed pump 8 via the solvent heater 4 for evaporation.
  • the solvent 5.3 is advantageously injected at the nozzle throat via the injection openings 5.1 in the flow channel 5.2. This results in a particularly high flow velocity and a correspondingly high negative pressure. This leads to a jet effect, through which the mixed steam present in the vacuum tank 1 is sucked into the flow channel 5.2.
  • the sucked mixed steam mixes with the injected solvent 5.3 and the solvent vapor 5.4 formed during injection.
  • the insulation of the electrical material to be dried 1.1 contain insulating oil, this is washed out by the condensing solvent and mixes with the solvent to a solvent / oil mixture.
  • the oil content is not evaporated in the solvent steam generator. Therefore, with continuous removal of mixed steam from the vacuum tank 1 and condensation of the extracted mixed steam in the mixing steam condenser 16, the oil content in the vacuum tank 1 steadily increases until practically only pure oil is present.
  • This oil is brought with the feed pump 8 via shut-off valve 20.7 in the oil tank 19. Thereafter, solvent is again drawn into the vacuum container 1 via the solvent heater 4 and evaporated in the manner previously mentioned.
  • the injection nozzles 11, 11.1, the stored in the separation vessel 17 cold solvent with the feed pump 8.1 via shut-off valve 20.5 is supplied and injected into the condensation chamber 10.
  • the solvent vapor component of mixed steam 13 sucked into the condensation space 10 condenses to form the condensed solvent 14.1.
  • water vapor can advantageously accumulate in the condensation chamber 10. It will be less Solvent vapor led to the mixed steam condenser 16. This saves energy, which is required on the one hand for heating the solvent and on the other hand for cooling the mixed steam condenser 16.
  • the injected solvent and the condensed solvent vapor flow via the drain tank 7 to the feed pump 8 and are fed via shut-off valve 20.3 to the solvent heater 4.
  • the solvent vapor-enriched in the condensation chamber 10 solvent vapor is controlled by the Dampfabsperrventil 20 fed to the mixed steam condenser 16 and condensed. Resulting air leakage is pumped off with the vacuum system 18. The solvent and water-containing condensate is then separated by sedimentation in the separation vessel 17 and the solvent with the pump 8.1 via shut-off valve 20.5 again fed to the injection nozzles 11, 11.1.
  • the feed pump 8 is turned off and the Dampfabsperrventil 20 fully open.
  • the pressure in the vacuum tank 1 is lowered and at the same time the resulting in the separation tank 17 Solvent condensate with the feed pump 8.1 via the valves 20.4, 20.6 fed to the Solventvorratstank 9.
  • the shut-off valve 21 is closed and the pressure in the vacuum container 1 with the vacuum pump 18 for a certain period of time to low Vacuum values lowered. Remaining residual water as well as possibly existing impurities are removed by condensation. After completion of this so-called fine vacuum phase of the vacuum vessel 1 is vented and then the dried material 1.1 is removed from the vacuum tank 1.
  • the vacuum container 1 is designed as a housing of a transformer, which contains the material to be dried, in this case too, the active part containing the solid insulation 1.1 of the transformer absorbs.
  • the transformer housing 1 is arranged in a thermal insulation house 1.5, which can be heated by the heat generator 3.
  • the heat generator 3 is designed as an air heater. The heating energy is supplied through the tubes 2. Air heated by the tubes 2 is conveyed as a heat carrier with the aid of a hot air fan 3.1 via a housing feedthrough 3.3 into the heat insulating house 1.5. About a housing bushing 3.2 air is brought from the planteisoliergephase 1.5 back to the air heater and reheated.
  • the heating tubes 2 are surrounded by a double jacket and are heated by the heat generator 3, both the transformer housing 1 and the solvent.
  • the transformer housing 1 with Abdeckflanschen 1.3 vacuum-tight openings 1.2, through which openings otherwise the power connections of the active part 1.1 are performed.
  • the flow channel 5.2 which is supplied with hot solvent by the solvent heater 4 via the solvent connection line 4.1, is arranged.
  • the solvent steam generator now arranged at the Düsenengstelle the Venturi nozzle and aligned in the direction of the nozzle axis injection nozzle 5.7, which is fed via line 4.1 with hot solvent.
  • Further solvent steam generators each with a flow channel and with one or optionally also with a plurality of injection nozzles 5.7, can be provided at other openings 1.2 of the transformer housing 1.
  • the flow channel 5.2 is formed substantially axially symmetrical and is limited by a fixed and largely curved around the axis Venturiblech 6.3 and by the adjustable running straightening 6. Downstream is on the straightening plate 6 additionally a baffle 6.4 arranged. Through the sheet metal 6.4, non-evaporated solvent passing from the channel 5.2 is guided to the wall of the transformer housing 1 and can be quickly removed from the housing 1 and supplied to the solvent heater 4 via a drain opening 1.4 (FIG.
  • the condensation chamber 10 is arranged in a further opening 1.2 transformer housing 1, the condensation chamber 10 is arranged.
  • Two embodiments of this condensation chamber can be seen from Figures 8 and 9, wherein the embodiment of Figure 8 is largely the Embodiment corresponds to Figure 5 and the Fig.9 largely that of FIG.
  • an air-cooled condenser 23 is still shown, which is connected to the outlet opening 10.3 of the condensation chamber 10 via the line 15 and the mixing steam condenser 16 is preceded by forming an additional condensation stage for the enriched steam containing mixed steam 14.2.
  • Air heated in the air-cooled condenser 23 is conveyed by a fan 23.1 via an inlet opening 23.2 into the heat insulating housing 1.4 for heating purposes.
  • the finished assembled transformer is introduced into the townisoliergephaseuse 1 and instead of housing bushings for the power connections of the active part 1.1 for carrying the line 4.1 and the injector 5.7 and to close the Condensation chamber 10 required connection flanges 1.3 mounted.
  • the interior of the transformer housing 1 is connected to the other components of the drying device.
  • the components can be conveniently mounted on sliding or mobile frame. The drying process can now - as described in the embodiment of the drying apparatus of Figure 1 - be performed. In contrast to the method as described in connection with the embodiment according to FIG.
  • a solvent steam generator 24 generally designed as a cascade evaporator, is arranged in the vacuum container 1. Solvent and heat are supplied to this steam generator from the outside through the wall of the vacuum container 1. The amount of solvent supplied is controlled by means of a Solventabsperrventils 20.9. The heat is formed in a heat generator 24.2 arranged outside the vacuum container. Solvent vapor 29 formed in the evaporator 24 flows through a solvent vapor outlet 24.1 into the flow channel 5.2.
  • Reference numeral 25 denotes a solvent heater located outside the vacuum container 1, in which the solvent is preheated and the preheated solvent is metered into the solvent distribution channel 5 located in the flow channel 5.2 via a solvent shut-off valve 20.8.
  • the injection nozzles 5.7 of the Solventverteilkanals 5 are arranged in the region of the bottleneck of the venturi.
  • the preheated solvent 5.3 injected in the direction of the solvent vapor stream 29 sucks the solvent vapor out of the evaporator 24 as a result of the action of action and thus increases its flow velocity.
  • the speed of the mixing steam flow 30 already carried in the flow channel 5.2 is also increased.
  • the steam flow 5.4 emerging from the flow channel 5.2 therefore has a high flow velocity and good turbulence. This results in a higher flow velocity and better turbulence of the circulating in the vacuum vessel solvent vapor stream than in conventional methods.
  • the drying times are reduced with low energy consumption.
  • As a result of the Jet Angel remains the desired high solvent vapor velocity in the autoclave even at the end of the heating phase. This leads to a shorter heating time in the upper temperature range and accordingly ensures a small temperature difference over the drying material 1.1 and thus also an improved drying quality.
  • the solvent vapor stream 29 is produced in an external solvent evaporator 26, for example a large evaporator or a downdraft evaporator, arranged outside the vacuum vessel 1 and via an inlet connection 27 and a Deflection plate 28 containing steam line led to the flow channel 5.2.
  • an external solvent evaporator 26 for example a large evaporator or a downdraft evaporator
  • the solvent vapor from the steam line and the mixed steam from the autoclave 1 are sucked off analogously to the embodiment according to FIG. 10, thus advantageously increasing the flow velocity and the turbulence of the steam flow 5.4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Drying Of Solid Materials (AREA)

Claims (17)

  1. Procédé pour le séchage d'un objet (1.1), de préférence d'isolations en matière solide d'un appareil électrique, selon la méthode de "Vapour-Phase" dans lequel l'objet (1.1) contenant au moins de l'eau, éventuellement en supplément de l'huile isolante et des impuretés est réchauffé dans un récipient à vide (1) sous dépression par condensation de vapeur de solvant (5.4) et un flux de vapeur mixte (13) contenant au moins de la vapeur de solvant et de la valeur d'eau est formé dans le cas présent, lequel flux est condensé ensuite et de l'eau et du solvant sont séparés de son condensat, procédé dans lequel le solvant guidé dans le récipient à vide (1) est réchauffé à une pression qui est supérieure à la pression régnant dans le récipient à vide (1) et le solvant réchauffé est introduit dans un canal d'écoulement (5.2) disposé à l'intérieur du récipient à vide (1), canal dans lequel il s'évapore, caractérisé en ce que le solvant (5.3) pouvant être réchauffé est injecté en formant un écoulement très chaud de vapeur de solvant (5.4) dans le canal d'écoulement (5.2) conçu à la façon d'une buse de Venturi.
  2. Procédé selon la revendication 1, caractérisé en ce que le solvant (5.3) réchauffé est injecté dans un flux de vapeur de solvant (29) guidé à travers la buse de Venturi.
  3. Procédé selon la revendication 2, caractérisé en ce que le flux de vapeur de solvant (29) est généré dans un évaporateur (24) disposé dans le récipient à vide (1).
  4. Procédé selon la revendication 2, caractérisé en ce que le flux de vapeur de solvant (29) est généré dans un évaporateur (26) disposé à l'extérieur du récipient à vide (1) et est guidé par la paroi à l'intérieur du récipient à vide (1).
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le solvant (5.3) réchauffé est injecté au point de rétrécissement de la buse de Venturi dans le canal d'écoulement (5.2).
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la section d'arrivée et/ou la section de sortie de la buse de Venturi sont modifiées.
  7. Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que du solvant (14) froid est injecté dans le récipient à vide (1) dans le flux de vapeur mixte (13).
  8. Procédé selon la revendication 7, caractérisé en ce que le solvant (14) froid est injecté dans le sens d'écoulement dans le flux de vapeur mixte (13).
  9. Procédé selon la revendication 7, caractérisé en ce que le solvant (14) froid est injecté dans le sens contraire au sens d'écoulement dans le flux de vapeur mixte (13).
  10. Dispositif pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 9, contenant en plus du récipient à vide (1) recevant l'objet à sécher (1.1) un générateur de vapeur de solvant avec un canal d'écoulement (5.2) disposé à l'intérieur du récipient à vide (1) et un dispositif pour la condensation du flux de vapeur mixte (13), caractérisé en ce que le canal d'écoulement (5.2) est conçu à la façon d'une buse de Venturi, et en ce que le générateur de vapeur de solvant présente un dispositif guidé dans le canal d'écoulement (5.2) pour l'injection de solvant réchauffé.
  11. Dispositif selon la revendication 10, caractérisé en ce que le dispositif d'injection est disposé en aval d'une ouverture de sortie de vapeur (24.1) d'un évaporateur de solvant (24) disposé dans la chambre à vide (1) ou en aval d'une ouverture de sortie de vapeur (24.1) d'une conduite de vapeur de solvant (27, 28) guidée par l'extérieur dans le récipient à vide (1), qu peut être alimentée en vapeur de solvant par un évaporateur de solvant (26) disposé à l'extérieur de la chambre à vide (1).
  12. Dispositif selon la revendication 11, caractérisé en ce que le canal d'écoulement (5.2) est disposé dans la zone de l'ouverture de sortie de vapeur (24.1).
  13. Dispositif selon l'une quelconque des revendications 10 à 12, caractérisé en ce que le dispositif d'injection contient un canal répartiteur de solvant (5) débouchant avec des ouvertures d'injection (5.1) et/ou des buses d'injection au moins dans la zone du point de rétrécissement de la buse de Venturi dans le canal d'écoulement (5.2) et/ou contient au moins une buse d'injection (5.7) maintenue dans la zone du point de rétrécissement de la buse de Venturi à l'intérieur du canal d'écoulement (5.2).
  14. Dispositif selon la revendication 13, caractérisé en ce que le canal répartiteur de solvant (5) est conçu comme un tuyau isolé.
  15. Dispositif selon l'une quelconque des revendications 10 à 14, caractérisé en ce qu'une tôle directrice (6) délimitant le canal d'écoulement (5.2) est conçue réglable en modifiant la section d'arrivée et/ou la section de sortie du canal d'écoulement (5.2).
  16. Dispositif selon l'une quelconque des revendications 10 à 15, caractérisé en ce qu'un espace de condensation (10), recevant au moins une buse d'injection (11) pour le solvant froid et le flux de vapeur mixte (13), du dispositif de condensation est disposé dans le récipient à vide (1).
  17. Dispositif selon l'une quelconque des revendications 10 à 16, caractérisé en ce que le récipient à vide (1) est réalisé comme boîtier de transformateur et est disposé dans une maison calorifuge (1.5) pouvant être chauffée de préférence avec de l'air.
EP04405298A 2003-10-31 2004-05-10 Procédé pour séchage de matériau et dispositif pour mettre en oeuvre le procédé Expired - Lifetime EP1528342B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04405298A EP1528342B1 (fr) 2003-10-31 2004-05-10 Procédé pour séchage de matériau et dispositif pour mettre en oeuvre le procédé

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03405783 2003-10-31
EP03405783 2003-10-31
EP04405298A EP1528342B1 (fr) 2003-10-31 2004-05-10 Procédé pour séchage de matériau et dispositif pour mettre en oeuvre le procédé

Publications (3)

Publication Number Publication Date
EP1528342A2 EP1528342A2 (fr) 2005-05-04
EP1528342A3 EP1528342A3 (fr) 2005-07-20
EP1528342B1 true EP1528342B1 (fr) 2006-08-30

Family

ID=34424789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04405298A Expired - Lifetime EP1528342B1 (fr) 2003-10-31 2004-05-10 Procédé pour séchage de matériau et dispositif pour mettre en oeuvre le procédé

Country Status (1)

Country Link
EP (1) EP1528342B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2148157A1 (fr) 2008-07-25 2010-01-27 Paul Gmeiner Dispositif de chauffage et de séchage d'une marchandise selon le procédé de phase vapeur
EP2525178A1 (fr) 2011-05-18 2012-11-21 Micavac AG Procédé de séchage d'un élément actif comprenant des isolations de matière solide d'un appareil électrique pouvant être rempli avec de l'huile d'imprégnation et dispositif destiné à l'exécution de ce procédé
EP3029403A1 (fr) 2014-12-03 2016-06-08 Paul Gmeiner Procédé et dispositif de séchage de l'isolation de matière solide de la pièce active d'un appareil électrique selon le procédé de phase gazeuse

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014101298B4 (de) * 2014-02-03 2019-03-14 Inter-Consult Gmbh Verfahren und Vorrichtung zum Aufheizen, Reinigen und Trocknen von Trocknungsgütern
US20190151772A1 (en) * 2017-11-22 2019-05-23 Maximiliano Andres Pino Orellana Solvent extraction equipment, which allows efficient use of energy, through the reuse of the solvent(s).

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211553B (de) * 1958-03-18 1966-02-24 Konrad Kieferle Trockner, z. B. Trocknungsschrank
FR1398812A (fr) * 1964-03-24 1965-05-14 Vide Soc Gen Du Perfectionnements au séchage des matières isolantes
CH646068A5 (en) * 1980-02-29 1984-11-15 Micafil Ag Drying device with a vaporiser and receiver for drying soaked insulations
DE19608974C1 (de) * 1996-03-08 1997-03-06 Sicowa Verfahrenstech Verfahren zum Trocknen von Beschickungsgut während seiner Druckdampfbehandlung in einem Autoklav und Autoklav hierfür
US6732448B2 (en) * 2000-09-05 2004-05-11 Wilhelm Hedrich Vakuumanlagen Gmbh & Co. Kg Device for preparing transformers
EP1253389B1 (fr) * 2001-04-24 2005-11-16 ABB Schweiz AG Procédé de séchage d'une pièce active, et dispositif pour la mise en oeuvre de ce procédé
US6702101B2 (en) * 2001-12-21 2004-03-09 Spraying Systems Co. Blower operated airknife with air augmenting shroud

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2148157A1 (fr) 2008-07-25 2010-01-27 Paul Gmeiner Dispositif de chauffage et de séchage d'une marchandise selon le procédé de phase vapeur
EP2525178A1 (fr) 2011-05-18 2012-11-21 Micavac AG Procédé de séchage d'un élément actif comprenant des isolations de matière solide d'un appareil électrique pouvant être rempli avec de l'huile d'imprégnation et dispositif destiné à l'exécution de ce procédé
EP3029403A1 (fr) 2014-12-03 2016-06-08 Paul Gmeiner Procédé et dispositif de séchage de l'isolation de matière solide de la pièce active d'un appareil électrique selon le procédé de phase gazeuse

Also Published As

Publication number Publication date
EP1528342A3 (fr) 2005-07-20
EP1528342A2 (fr) 2005-05-04

Similar Documents

Publication Publication Date Title
DE2544343B2 (de) Verfahren zur Herstellung von weißem Zement und Anlage zur Durchführung des Verfahrens
EP1528342B1 (fr) Procédé pour séchage de matériau et dispositif pour mettre en oeuvre le procédé
DE2256590A1 (de) Duese zur verwendung in heissfluessigkeitsstrahlpumpen und damit verbundenes verfahren
DE2366052A1 (de) Tabaktrockner
EP2148157B1 (fr) Dispositif de chauffage et de séchage d'une marchandise selon le procédé de phase vapeur
EP2589699A1 (fr) Armoire de traitement du linge
EP1429858A1 (fr) Procede et dispositif de degazage thermique
EP1010384A1 (fr) Appareil de cuisson et méthode pour réchauffer un produit de cuisson à l'aide de vapeur
DE3119560C2 (de) Vorrichtung zum Glätten von Kleidungsstücken
EP2525178B1 (fr) Procédé de séchage d'un élément actif comprenant des isolations de matière solide d'un appareil électrique pouvant être rempli avec de l'huile d'imprégnation et dispositif destiné à l'exécution de ce procédé
DE377747C (de) Verfahren und Vorrichtung zum Eintrocknen von in Loesung oder innerhalb einer Fluessigkeit in Suspension befindlichen festen Koerpern
EP0752567B1 (fr) Procédé de séchage d'une isolation solide d'un appareil électrique, et dispositif pour la mise en oeuvre de ce procédé
EP2308576B1 (fr) Evaporateur
DE2850019A1 (de) Verfahren und einrichtung zum abscheiden von kondensierten und/oder kondensierbaren komponenten aus einem rohgasgemisch
DE3001995C2 (fr)
DE19502489C2 (de) Wärmeverbraucherstation
DE649672C (de) Verfahren und Anlage zum Verdampfen von Fluessigkeit
EP3029403B1 (fr) Procédé et dispositif de séchage de l'isolation de matière solide de la pièce active d'un appareil électrique selon le procédé de phase gazeuse
EP0324941B1 (fr) Procédé et installation de traitement de matières textiles
DE19608974C1 (de) Verfahren zum Trocknen von Beschickungsgut während seiner Druckdampfbehandlung in einem Autoklav und Autoklav hierfür
DE102010030195B4 (de) Kühlvorrichtung für Lebensmittel sowie Düseneinrichtung hierfür
WO2013124140A1 (fr) Séchage de produits alimentaires, notamment de pâtes
DE102011052430B4 (de) Dampfnutzungsanlage
DE3009954A1 (de) Verfahren zum trocknen von waesche und strahlungstrockner zur durchfuehrung des verfahrens
DE3026625A1 (de) Verfahren zur verbesserung der leistung von indrekten waermeaustauschern, rohrbuendelwaermeaustauscher und dessen verwendung

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 IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

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 IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20051021

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): CH DE FR GB LI SE

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): CH DE FR GB LI SE

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

Ref country code: GB

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: 20060830

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

REF Corresponds to:

Ref document number: 502004001330

Country of ref document: DE

Date of ref document: 20061012

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20060830

EN Fr: translation not filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: WILHELM HEDRICH VAKUUMANLAGEN GMBH & CO. KG

Effective date: 20070526

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

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

Ref country code: FR

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: 20070511

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

Ref country code: FR

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: 20060830

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20110519

REG Reference to a national code

Ref country code: DE

Ref legal event code: R100

Ref document number: 502004001330

Country of ref document: DE

Effective date: 20110519

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

Ref country code: CH

Payment date: 20220815

Year of fee payment: 19

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

Ref country code: DE

Payment date: 20230606

Year of fee payment: 20

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

Ref country code: SE

Payment date: 20230710

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20230531

Ref country code: CH

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

Effective date: 20230531

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 502004001330

Country of ref document: DE

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG