EP0297029B1 - Method and apparatus for regulating the supply of steam in a steaming chamber - Google Patents

Method and apparatus for regulating the supply of steam in a steaming chamber Download PDF

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Publication number
EP0297029B1
EP0297029B1 EP88810283A EP88810283A EP0297029B1 EP 0297029 B1 EP0297029 B1 EP 0297029B1 EP 88810283 A EP88810283 A EP 88810283A EP 88810283 A EP88810283 A EP 88810283A EP 0297029 B1 EP0297029 B1 EP 0297029B1
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EP
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Prior art keywords
steam
steaming chamber
temperature
damper housing
measurement
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EP88810283A
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German (de)
French (fr)
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EP0297029A1 (en
Inventor
Andres Bichsel
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Benninger AG
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Benninger AG
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B17/00—Storing of textile materials in association with the treatment of the materials by liquids, gases or vapours
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0005—Fixing of chemicals, e.g. dyestuffs, on textile materials
    • D06B19/0029—Fixing of chemicals, e.g. dyestuffs, on textile materials by steam
    • D06B19/0035—Fixing of chemicals, e.g. dyestuffs, on textile materials by steam the textile material passing through a chamber
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D06B3/12—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics in zig-zag manner over series of guiding means

Definitions

  • the invention relates to a method and a device for regulating the steam supply in a damper housing according to the preamble of claim 1 and of claim 4.
  • a control is required which in each case supplies the damper housing with so much steam that the temperature in the damper required for an optimal reaction remains constant and that the damper housing is completely filled with steam and if possible has no air pockets.
  • the best way to achieve this is to maintain a constant vapor pressure in the damper housing that is above atmospheric pressure.
  • This object is achieved according to the invention with a method with the features of claim 1 and with a device with the features of claim 3.
  • the invention is based on the physical fact that media with different temperatures layer according to their density.
  • the hot and thus lighter water vapor fills the damper housing from top to bottom and displaces the heavier air.
  • This property is used in an optimally simple manner by the method according to the invention or by the device to determine the pressure inside the damper or the degree of steam filling by measuring the temperature. Since the temperature is measured in the area of the lowest vapor layer, an optimal degree of filling can always be maintained. A sharp drop in temperature can be measured in the border area between the lowest and therefore heaviest vapor layer and the ambient air, so that the lower vapor level can be determined with the temperature measurement.
  • the measurement is particularly reliable and simple if the temperature outside the damper housing is measured in a pipeline that communicates freely with the steam atmosphere in the steam housing and with the outside atmosphere.
  • the measurement of the temperature in the pipeline outside the damper housing also has the advantage that the stratification in the pipeline is more constant than at other points within the damper housing.
  • the separation point between hot steam and colder ambient air remains unaffected by operational turbulence at a constant level under optimal conditions. In this way, no complicated measuring devices are required inside the damper housing.
  • the steam can flow freely through the pipeline into the outside atmosphere, so that the temperature at the measuring point only increases when steam flows past the measuring point instead of the displaced air.
  • the degree of filling can be controlled in an optimally simple manner if, when the temperature at the measuring point drops, steam is supplied to the damper housing until the temperature at the measuring point rises again.
  • a complete filling of the damper housing with steam is ensured in that the pipeline extends under the damper housing and that the temperature sensor is arranged below the damper housing.
  • the steam only reaches the temperature sensor when the entire damper housing is filled with steam and when a layer of steam builds up in the pipeline.
  • the pipeline can have a straight section which has a plurality of connection points for a temperature sensor which are arranged at a distance from one another.
  • the temperature sensor can be placed at various points on the Pipeline to be attached. It would also be conceivable to attach more than one temperature sensor to the pipeline in order to achieve more precise control or an increased safety factor.
  • the government-controlled means have a steam regulating valve in a steam feed line leading to the damper housing, the steam regulating valve being operable by a controller which compares the temperature measured at the temperature sensor with a target temperature which corresponds to a damper housing completely filled with steam.
  • This temperature can be determined by measurements, the measured value also allowing conclusions to be drawn about the temperature or the pressure at any point in the damper housing.
  • the steam atmosphere is influenced by alternative controller-controlled means. For example, fresh water can also be injected into the damper housing when a heating device in the damper housing is actuated at the same time.
  • a damper 8 is shown in a highly simplified representation, as is usually used for the treatment of a fabric web 2 in a steam atmosphere.
  • the fabric web 2 comes from a pretreatment system, not shown, through the inlet channel 9 into the damper housing 1 and is guided in a meandering manner through the damper via lower guide rollers 10 and upper guide rollers 11 in a bound web guide.
  • the damper housing 1 is covered with an insulation 12.
  • the inlet opening 19 on the inlet channel 9 is kept as narrow as possible in order to prevent steam from escaping as far as possible. Touching the fabric web 2 e.g. A flexible lip seal is not permitted at this point, otherwise the liquid carried along by the fabric web, e.g. Dyes, bleaches, etc. would be scraped off.
  • the fabric web 2 leaves the damper housing 1 via a water lock 13, in which a deflection roller 18 is arranged.
  • the water lock prevents steam from escaping through the outlet.
  • an outlet opening can also be formed, which is designed like the inlet opening 19.
  • the fabric web is then a post-treatment machine such as fed to a washing machine.
  • steam is supplied to the damper housing from a steam source (not shown) in a steam feed line.
  • the steam arrives in a collecting line 20 and from there via several steam distribution pipes 14 into the interior of the damper housing.
  • a steam control valve 16 is arranged in the steam feed line 15 and is equipped with a pneumatic, hydraulic or electromotive actuator.
  • the steam control valve 16 is controlled by a controller 17 and opens or cuts off the steam supply in the damper housing, depending on the actual state determined. As a rule, the damper is heated by means of saturated steam.
  • the pipeline 3 is arranged on the side of the damper housing and extends below the bottom of the damper housing.
  • the stratification in the damper housing corresponding to the vapor density can thus continue in the pipeline, since it is open to the outside atmosphere at one end.
  • a temperature sensor 4 is arranged on the pipeline 3, which feeds the measured temperature to the controller 17 via a measuring transducer, not shown in any more detail.
  • the desired setpoint temperature is set on controller 17 when the damper is started up.
  • FIG 2 an advantageous embodiment of the pipeline 3 is shown in more detail.
  • the pipeline is fastened to the side wall 21 of the damper housing 1 with a connecting flange 5.
  • the pipeline could also extend straight down from the bottom of the damper housing.
  • condensate would also flow out, which is undesirable on the one hand and which on the other hand could falsify the measurement results.
  • a lateral arrangement at a certain distance from the floor is therefore more advantageous.
  • From the connecting flange 5, the pipeline extends vertically downward over a bend 23.
  • the outlet opening 22 is therefore in any case below the deepest point of the damper housing 1.
  • the diameter of the pipeline 3 is dimensioned such that the steam atmosphere can propagate in layers in an unhindered manner.
  • the temperature sensor 4 is fastened to a connecting eye 7 and projects obliquely from above into the interior of the pipeline 3.
  • the temperature determined can be read directly on a thermometer 6.
  • a plurality of connection eyes 7 can be arranged at regular intervals on the straight section of the pipeline, into which a temperature sensor 4 or a sealing pin can be inserted as required. As a rule, however, the optimal position of the sensor 4 on the pipeline 3 is determined by tests, so that only a single connecting eye 7 is required.
  • a control sensor 24 can be arranged, which measures the actual temperature in the working area of the damper housing. This temperature can be read on the control thermometer 25.
  • the stratification of a steam column 26 with increasing density or decreasing temperature from top to bottom is relative to the pipeline 3 in FIG. 2 represented symbolically.
  • the steam column 26 or the pipeline 3 is divided into the levels a to h, which are arranged at the same distance from each other.
  • the plane y lies on the outlet opening 22 and the plane x lies on the level of the control measuring sensor 24.
  • control measurements were carried out in the mentioned planes, the diagram shown in FIG. 3 resulting from pressure and temperature. T is the temperature in degrees Celcius and P is the vapor pressure in Pascal.
  • the "hot / cold" separation point is always kept at approximately the same level via the control system, so that a constant temperature at level x and complete filling of the damper housing with steam is ensured.
  • the pressure decreases with increasing distance from the damper housing and reaches the value 0 on the plane y or at the outlet opening 22.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Pipeline Systems (AREA)

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Regeln der Dampfzufuhr in einem Dämpfergehäuse gemäss dem Oberbegriff von Anspruch 1 bzw. von Anspruch 4. Um bei der kontinuierlichen Behandlung von Textilgut in einem Dämpfer optimale Resultate zu erhalten, ist es bekanntlich erforderlich, eine möglichst gleichbleibende Dampfatmosphäre im Dämpfergehäuse aufrechtzuerhalten. Zu diesem Zweck ist eine Regelung erforderlich, welche dem Dämpfergehäuse jeweils so viel Dampf zuführt, dass die für eine optimale Reaktion erforderliche Temperatur im Dämpfer konstant bleibt und dass das Dämpfergehäuse vollständig mit Dampf gefüllt ist und möglichst keine Lufteinschlüsse aufweist. Dieses Ziel wird am besten dadurch erreicht, dass im Dämpfergehäuse dauernd ein bestimmter Dampfdruck aufrechterhalten wird, der über dem Atmosphärendruck liegt.The invention relates to a method and a device for regulating the steam supply in a damper housing according to the preamble of claim 1 and of claim 4. In order to obtain optimal results in the continuous treatment of textile material in a damper, it is known that it is necessary to have the Maintain steam atmosphere in the damper housing. For this purpose, a control is required which in each case supplies the damper housing with so much steam that the temperature in the damper required for an optimal reaction remains constant and that the damper housing is completely filled with steam and if possible has no air pockets. The best way to achieve this is to maintain a constant vapor pressure in the damper housing that is above atmospheric pressure.

Die Regelung der Dampfzufuhr und damit des Dampfdruckes im Dämpfergehäuse wird jedoch dadurch erschwert, dass die exakte Messung des Istzustandes im Dämpfergehäuse mit erheblichen Schwierigkeiten verbunden ist. Infolge der kontinuierlichen Arbeitsweise des Dämpfers, die das Anbringen von Eintritts- und Austrittöffnungen erfordert, kann im Dämpfergehäuse nur ein geringer Ueberdruck erzeugt werden. Andernfalls würde dauernd eine erhebliche Dampfmenge aus dem Dämpfergehäuse austreten, was wegen der damit verbundenen Immissionen und Energieverluste nicht erwünscht ist. Der geringe Ueberdruck erschwert die Verwendung des Druckes als Regelgrösse, da dieser einerseits schwierig zu messen ist und da anderseits betriebsbedingte Druckschwankungen zu Fehlregelungen führen würden. Aber auch eine Temperaturmessung innerhalb des Dämpfergehäuses ist mit Schwierigkeiten verbunden, da turbulente Strömungen auftreten können, die das Messresultat verfälschen. Ausserdem sagt eine irgendwo im Dämpfergehäuse gemessene Temperatur noch nichts aus über den tatsächlichen Dampffüllungsgrad im Dämpfergehäuse.The regulation of the steam supply and thus the steam pressure in the damper housing is made more difficult by the fact that the exact measurement of the actual state in the damper housing is associated with considerable difficulties. Due to the continuous operation of the damper, which requires the installation of inlet and outlet openings, only a slight excess pressure can be generated in the damper housing. Otherwise, a significant amount of steam would continuously escape from the damper housing, which is not desirable because of the associated immissions and energy losses. The low excess pressure makes it difficult to use the pressure as a control variable, since it is difficult to measure on the one hand and, on the other hand, operational pressure fluctuations would lead to incorrect control. However, temperature measurement within the damper housing is also difficult because turbulent flows can occur which falsify the measurement result. In addition, a temperature measured somewhere in the damper housing does not say anything about the actual degree of steam filling in the damper housing.

Durch die DE-A 1 937 100 ist eine gattungsmässig vergleichbare Vorrichtung bekanntgeworden, bei welcher der Zustand der Dampfatmosphäre im Dämpfergehäuse mit Hilfe eines Wassergefässes im Dämpfergehäuse ermittelt wird, welches von aussen laufend mit Wasser versorgt wird. Die dem Wassergefäss zugeführte Wassermenge wird mit einem Durchflussmesser ermittelt. Die Temperatur der Flüssigkeit im Gefäss und die mit Hilfe der Durchflussmenge ermittelte Verdampfungsgeschwindigkeit bilden eine Regelgrösse für die Zufuhr von Dampf und Wärme zum Dämpfer. Dieses Messverfahren ist ersichtlicherweise sehr kompliziert und gewährleistet nicht unbedingt die Aufrechterhaltung eines optimalen Dampffüllungsgrades im Innern des Dämpfergehäuses.From DE-A 1 937 100 a generic comparable device has become known, in which the state of the steam atmosphere in the damper housing is determined with the help of a water vessel in the damper housing, which is continuously supplied with water from the outside. The amount of water supplied to the water tank is determined with a flow meter. The temperature of the liquid in the vessel and the evaporation rate determined with the aid of the flow rate form a controlled variable for the supply of steam and heat to the damper. Obviously, this measurement procedure is very complicated and does not necessarily guarantee the maintenance of an optimal degree of steam filling inside the damper housing.

Es ist daher eine Aufgabe der Erfindung, ein Verfahren und eine Vorrichtung der eingangs genannten Art zu schaffen, um in einem Dämpfergehäuse einen optimalen Füllungsgrad und eine möglichst konstante Temperatur aufrechtzuerhalten. Diese Aufgabe wird erfindungsgemäss mit einem Verfahren mit den Merkmalen von Anspruch 1 und mit einer Vorrichtung mit den Merkmalen von Anspruch 3 gelöst.It is therefore an object of the invention to provide a method and a device of the type mentioned at the outset in order to maintain an optimum degree of filling and a temperature which is as constant as possible in a damper housing. This object is achieved according to the invention with a method with the features of claim 1 and with a device with the features of claim 3.

Die Erfindung geht von der physikalischen Tatsache aus, dass sich Medien mit unterschiedlichen Temperaturen entsprechend ihrer Dichte schichten. Der heisse und somit leichtere Wasserdampf füllt somit das Dämpfergehäuse von oben nach unten und verdrängt dabei die schwerere Luft. Diese Eigenschaft wird durch das erfindungsgemässe Verfahren bzw. durch die Vorrichtung auf optimal einfache Weise dazu ausgenützt um den Druck im Innern des Dämpfers bzw. den Dampffüllungsgrad durch Messung der Temperatur zu ermitteln. Da die Temperatur im Bereich der untersten Dampfschicht gemessen wird, kann immer ein optimaler Füllungsgrad aufrechterhalten werden. Im Grenzbereich zwischen der untersten und damit schwersten Dampfschicht und der Umgebungsluft ist ein starker Temperaturabfall messbar, so dass mit der Temperaturmessung das untere Dampfniveau ermittelt werden kann.The invention is based on the physical fact that media with different temperatures layer according to their density. The hot and thus lighter water vapor fills the damper housing from top to bottom and displaces the heavier air. This property is used in an optimally simple manner by the method according to the invention or by the device to determine the pressure inside the damper or the degree of steam filling by measuring the temperature. Since the temperature is measured in the area of the lowest vapor layer, an optimal degree of filling can always be maintained. A sharp drop in temperature can be measured in the border area between the lowest and therefore heaviest vapor layer and the ambient air, so that the lower vapor level can be determined with the temperature measurement.

Die Messung erfolgt dabei besonders zuverlässig und einfach, wenn die Temperatur ausserhalb des Dämpfergehäuses in einer Rohrleitung gemessen wird, die mit der Dampfatmosphäre im Dampfgehäuse und mit der Aussenatmosphäre frei kommuniziert. Die Messung der Temperatur in der Rohrleitung ausserhalb des Dämpfergehäuses hat ausserdem den Vorteil, dass die Schichtung in der Rohrleitung konstanter ist als an anderen Stellen innerhalb des Dämpfergehäuses. Die Trennstelle zwischen heissem Dampf und kälterer Umgebungsluft bleibt unbeeinflusst von betriebsbedingten Turbulenzen auf einem unter optimalen Bedingungen stets gleichbleibenden Niveau. Auf diese Weise sind keine komplizierten Messeinrichtungen im Innern des Dämpfergehäuses erforderlich. Der Dampf kann infolge der Druckdifferenz frei durch die Rohrleitung in die Aussenatmosphäre strömen, so dass die Temperatur am Messpunkt erst dann ansteigt, wenn anstelle der verdrängten Luft Dampf am Messpunkt vorbeiströmt. Die Regelung des Füllungsgrades kann dabei auf optimal einfache Weise erfolgen, wenn beim Absinken der Temperatur am Messpunkt dem Dämpfergehäuse so lange Dampf zugeführt wird, bis die Temperatur am Messpunkt wieder steigt.The measurement is particularly reliable and simple if the temperature outside the damper housing is measured in a pipeline that communicates freely with the steam atmosphere in the steam housing and with the outside atmosphere. The measurement of the temperature in the pipeline outside the damper housing also has the advantage that the stratification in the pipeline is more constant than at other points within the damper housing. The separation point between hot steam and colder ambient air remains unaffected by operational turbulence at a constant level under optimal conditions. In this way, no complicated measuring devices are required inside the damper housing. As a result of the pressure difference, the steam can flow freely through the pipeline into the outside atmosphere, so that the temperature at the measuring point only increases when steam flows past the measuring point instead of the displaced air. The degree of filling can be controlled in an optimally simple manner if, when the temperature at the measuring point drops, steam is supplied to the damper housing until the temperature at the measuring point rises again.

Eine vollständige Füllung des Dämpfergehäuses mit Dampf wird dadurch gewährleistet, dass sich die Rohrleitung unter das Dämpfergehäuse erstreckt und dass der Temperaturfühler unterhalb des Dämpfergehäuses angeordnet ist. Der Dampf erreicht dadurch den Temperaturfühler erst, wenn das gesamte Dämpfergehäuse mit Dampf gefüllt ist und wenn sich auch in der Rohrleitung eine Dampfschicht aufbaut.A complete filling of the damper housing with steam is ensured in that the pipeline extends under the damper housing and that the temperature sensor is arranged below the damper housing. As a result, the steam only reaches the temperature sensor when the entire damper housing is filled with steam and when a layer of steam builds up in the pipeline.

Die Rohrleitung kann einen geraden Abschnitt aufweisen, der mehrere im Abstand zueinander angeordnete Anschlussstellen für einen Temperaturfühler aufweist. Je nach dem angestrebten lstzustand im Dämpfergehäuse bzw. je nach dem Messbereich der Temperaturfühler kann der Temperaturfühler an verschiedenen Stellen an der Rohrleitung befestigt werden. Es wäre auch denkbar, mehr als einen Temperaturfühler an der Rohrleitung zu befestigen, um eine exaktere Regelung oder einen erhöhten Sicherheitsfaktor zu erreichen.The pipeline can have a straight section which has a plurality of connection points for a temperature sensor which are arranged at a distance from one another. Depending on the desired actual state in the damper housing or depending on the measuring range of the temperature sensor, the temperature sensor can be placed at various points on the Pipeline to be attached. It would also be conceivable to attach more than one temperature sensor to the pipeline in order to achieve more precise control or an increased safety factor.

Besonders vorteilhaft weisen die regiergesteuerten Mittel ein Dampfregulierventil in einer zum Dämpfergehäuse führenden Dampfspeiseleitung auf wobei das Dampfregelventil durch einen Regler betätigbar ist, der die am Temperaturfühler gemessene Temperatur mit einer Solltemperatur vergleicht, die einem vollständig mit Dampf gefüllten Dämpfergehäuse entspricht. Diese Temperatur kann durch Messungen ermittelt werden, wobei der gemessene Wert auch Rückschlüsse über die Temperatur bzw. über den Druck an einer beliebigen Stelle im Dämpfergehäuse erlaubt. Selbstverständlich wäre es aber auch denkbar, dass die Dampfatmosphäre durch alternative reglergesteuerte Mittel beeinflusst wird. So könnte z.B. bei gleichzeitiger Betätigung einer Heizeinrichtung im Dämpfergehäuse auch Frischwasser in das Dämpfergehäuse eingespritzt werden.Particularly advantageously, the government-controlled means have a steam regulating valve in a steam feed line leading to the damper housing, the steam regulating valve being operable by a controller which compares the temperature measured at the temperature sensor with a target temperature which corresponds to a damper housing completely filled with steam. This temperature can be determined by measurements, the measured value also allowing conclusions to be drawn about the temperature or the pressure at any point in the damper housing. Of course, it would also be conceivable that the steam atmosphere is influenced by alternative controller-controlled means. For example, fresh water can also be injected into the damper housing when a heating device in the damper housing is actuated at the same time.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird nachstehend genauer beschrieben. Es zeigen:

  • Figur 1 Eine erfindungsgemässe Vorrichtung in schematischer Darstellung,
  • Figur 2 eine Rohrleitung mit angeschlossenem Temperaturfühler und
  • Figur 3 ein Diagramm mit den Temperatur- und Druckverhältnissen in der Rohrleitung.
An embodiment of the invention is shown in the drawings and will be described in more detail below. Show it:
  • FIG. 1 shows a device according to the invention in a schematic illustration,
  • Figure 2 is a pipe with a connected temperature sensor and
  • Figure 3 is a diagram with the temperature and pressure conditions in the pipeline.

In Figur 1 ist in stark vereinfachter Darstellungsweise ein Dämpfer 8 dargestellt, wie er üblicherweise für die Behandlung einer Gewebebahn 2 in einer Dampfatmosphäre verwendet wird. Die Gewebebahn 2 kommt von einer nicht dargestellten Vorbehandlungsanlage durch den Eintrittskanal 9 in das Dämpfergehäuse 1 und wird über untere Leitwalzen 10 und obere Leitwalzen 11 in gebundener Bahnführung mäanderförmig durch den Dämpfer geführt. Um den Energieverlust so klein wie möglich zu halten, ist das Dämpfergehäuse 1 mit einer Isolation 12 überzogen.In Figure 1, a damper 8 is shown in a highly simplified representation, as is usually used for the treatment of a fabric web 2 in a steam atmosphere. The fabric web 2 comes from a pretreatment system, not shown, through the inlet channel 9 into the damper housing 1 and is guided in a meandering manner through the damper via lower guide rollers 10 and upper guide rollers 11 in a bound web guide. In order to keep the energy loss as small as possible, the damper housing 1 is covered with an insulation 12.

Die Eintrittsöffnung 19 am Eintrittskanal 9 ist so schmal wie möglich gehalten, um ein Entweichen von Dampf möglichst zu vermeiden. Eine Berührung der Gewebebahn 2 z.B. durch eine flexible Lippendichtung ist an dieser Stelle nicht zulässig, da sonst die von der Gewebebahn mitgeführte Flüssigkeit wie z.B. Farbstoffe, Bleichmittel usw. wiederum abgerakelt würde. Im Ausführungsbeispiel verlässt die Gewebebahn 2 das Dämpfergehäuse 1 über ein Wasserschloss 13, in dem eine Umlenkwalze 18 angeordnet ist. Das Wasserschloss verhindert das Austreten von Dampf durch die Austrittstelle. Anstelle des Wasserschlosses kann aber auch eine Austrittsöffnung treten, die wie die Eintrittsöffnung 19 ausgebildet ist. Die Gewebebahn wird anschliessend einer Nachbehandlungsmaschine wie z.B. einer Waschmaschine zugeführt.The inlet opening 19 on the inlet channel 9 is kept as narrow as possible in order to prevent steam from escaping as far as possible. Touching the fabric web 2 e.g. A flexible lip seal is not permitted at this point, otherwise the liquid carried along by the fabric web, e.g. Dyes, bleaches, etc. would be scraped off. In the exemplary embodiment, the fabric web 2 leaves the damper housing 1 via a water lock 13, in which a deflection roller 18 is arranged. The water lock prevents steam from escaping through the outlet. Instead of the water castle, however, an outlet opening can also be formed, which is designed like the inlet opening 19. The fabric web is then a post-treatment machine such as fed to a washing machine.

Zum Aufheizen und Beheizen des Dämpfergehäuses wird von einer nicht dargestellten Dampfquelle in einer Dampfspeiseleitung 15 Dampf an das Dämpfergehäuse herangeführt. Der Dampf gelangt in eine Sammelleitung 20 und von dort aus über mehrere Dampfverteilerrohre 14 ins Innere des Dämpfergehäuses. In der Dampfspeiseleitung 15 ist ein Dampfregelventil 16 angeordnet, das mit einem pneumatischen, hydraulischen oder elektromotorischen Stellglied ausgerüstet ist. Das Dampfregelventil 16 wird durch einen Regler 17 angesteuert und öffnet oder unterbricht die Dampfzufuhr je nach dem ermittelten Istzustand im Dämpfergehäuse. In der Regel erfolgt die Beheizung des Dämpfers mittels Sattdampf.To heat and heat the damper housing 15, steam is supplied to the damper housing from a steam source (not shown) in a steam feed line. The steam arrives in a collecting line 20 and from there via several steam distribution pipes 14 into the interior of the damper housing. A steam control valve 16 is arranged in the steam feed line 15 and is equipped with a pneumatic, hydraulic or electromotive actuator. The steam control valve 16 is controlled by a controller 17 and opens or cuts off the steam supply in the damper housing, depending on the actual state determined. As a rule, the damper is heated by means of saturated steam.

Seitlich am Dämpfergehäuse ist die Rohrleitung 3 angeordnet, die sich bis unter den Boden des Dämpfergehäuses erstreckt. Die der Dampfdichte entsprechende Schichtung im Dämpfergehäuse kann sich somit in der Rohrleitung fortsetzen, da diese an einem Ende zur Aussenatmosphäre geöffnet ist. Unterhalb des Dämpfergehäuses 1 ist an der Rohrleitung 3 ein Temperaturfühler 4 angeordnet, der die gemessene Temperatur über einen nicht näher dargestellten Messwertumformer dem Regler 17 zuführt. Die gewünschte Solltemperatur wird bei der Inbetriebnahme des Dämpfers am Regler 17 eingestellt.The pipeline 3 is arranged on the side of the damper housing and extends below the bottom of the damper housing. The stratification in the damper housing corresponding to the vapor density can thus continue in the pipeline, since it is open to the outside atmosphere at one end. Below the damper housing 1, a temperature sensor 4 is arranged on the pipeline 3, which feeds the measured temperature to the controller 17 via a measuring transducer, not shown in any more detail. The desired setpoint temperature is set on controller 17 when the damper is started up.

In Figur 2 ist eine vorteilhafte Ausbildung der Rohrleitung 3 etwas genauer dargestellt. Die Rohrleitung ist mit einem Anschlussflansch 5 an der Seitenwand 21 des Dämpfergehäuses 1 befestigt. Theoretisch könnte sich die Rohrleitung auch unmittelbar vom Boden des Dämpfergehäuses aus nach unten erstrecken. Dabei würde jedoch auch Kondensat ausströmen, was einerseits unerwünscht ist und was anderseits die Messresultate verfälschen könnte. Eine seitliche Anordnung in einem bestimmten Abstand zum Boden ist daher vorteilhafter. Vom Anschlussflansch 5 her erstreckt sich die Rohrleitung über eine Krümmung 23 vertikal nach unten. Die Austrittsöffnung 22 liegt somit in jedem Fall unterhalb der tiefsten Stelle des Dämpfergehäuses 1. Der Durchmesser der Rohrleitung 3 ist so dimensioniert, dass sich die Dampfatmosphäre ungehindert schichtförmig fortpflanzen kann.In Figure 2, an advantageous embodiment of the pipeline 3 is shown in more detail. The pipeline is fastened to the side wall 21 of the damper housing 1 with a connecting flange 5. Theoretically, the pipeline could also extend straight down from the bottom of the damper housing. However, condensate would also flow out, which is undesirable on the one hand and which on the other hand could falsify the measurement results. A lateral arrangement at a certain distance from the floor is therefore more advantageous. From the connecting flange 5, the pipeline extends vertically downward over a bend 23. The outlet opening 22 is therefore in any case below the deepest point of the damper housing 1. The diameter of the pipeline 3 is dimensioned such that the steam atmosphere can propagate in layers in an unhindered manner.

Der Temperaturfühler 4 ist an einem Anschlussauge 7 befestigt und ragt von oben schräg ins Innere der Rohrleitung 3. Die ermittelte Temperatur kann direkt an einem Thermometer 6 abgelesen werden. Am geraden Abschnitt der Rohrleitung können in regelmässigen Abständen mehrere Anschlussaugen 7 angeordnet sein, in welche nach Bedarf ein Temperaturfühler 4 oder aber ein Verschlusszapfen eingesetzt werden kann. In der Regel wird jedoch die optimale Position des Messfühlers 4 an der Rohrleitung 3 durch Versuche ermittelt, so dass nur ein einziges Anschlussauge 7 erforderlich ist.The temperature sensor 4 is fastened to a connecting eye 7 and projects obliquely from above into the interior of the pipeline 3. The temperature determined can be read directly on a thermometer 6. A plurality of connection eyes 7 can be arranged at regular intervals on the straight section of the pipeline, into which a temperature sensor 4 or a sealing pin can be inserted as required. As a rule, however, the optimal position of the sensor 4 on the pipeline 3 is determined by tests, so that only a single connecting eye 7 is required.

Im Bereich einer beruhigten Dampfatmosphäre im Innern des Dämpfergehäuses 1 kann ein Kontrollmessfühler 24 angeordnet sein, der die Isttemperatur im Arbeitsbereich des Dämpfergehäuses misst. Diese Temperatur kann am Kontrollthermometer 25 abgelesen werden.In the area of a calm steam atmosphere inside the damper housing 1, a control sensor 24 can be arranged, which measures the actual temperature in the working area of the damper housing. This temperature can be read on the control thermometer 25.

Die Schichtung einer Dampfsäule 26 mit von oben nach unten zunehmender Dichte bzw. abnehmender Temperatur ist in Figur 2 relativ zur Rohrleitung 3 symbolisch dargestellt. Die Dampfsäule 26 bzw. die Rohrleitung 3 ist dabei in die Ebenen a bis h unterteilt, die im gleichen Abstand zueinander angeordnet sind. Die Ebene y liegt auf der Austrittsöffnung 22 und die Ebene x liegt auf der Höhe des Kontrollmessfühlers 24. In einer Versuchsanordnung wurden Kontrollmessungen in den genannten Ebenen durchgeführt, wobei sich das in Figur 3 dargestellte Diagramm aus Druck und Temperatur ergab. T ist dabei die Temperatur in Grad Celcius und P der Dampfdruck in Pascal.The stratification of a steam column 26 with increasing density or decreasing temperature from top to bottom is relative to the pipeline 3 in FIG. 2 represented symbolically. The steam column 26 or the pipeline 3 is divided into the levels a to h, which are arranged at the same distance from each other. The plane y lies on the outlet opening 22 and the plane x lies on the level of the control measuring sensor 24. In a test arrangement, control measurements were carried out in the mentioned planes, the diagram shown in FIG. 3 resulting from pressure and temperature. T is the temperature in degrees Celcius and P is the vapor pressure in Pascal.

Wie aus der Temperaturkurve 27 ersichtlich ist, kann zwischen den Ebenen g und e ein starkes Temperaturgefälle festgestellt werden. Dieses Temperaturgefälle entspricht dem Grenzbereich zwischen der Dampfatmosphäre im Dämpferinnern und der Aussenatmosphäre. Die Temperatur im Messstellenbereich f liegt dabei in einer Grössenordnung, welche die Verwendung handelsüblicher Temperaturfühler erlaubt.As can be seen from the temperature curve 27, a strong temperature gradient can be found between the levels g and e. This temperature gradient corresponds to the border area between the steam atmosphere inside the damper and the outside atmosphere. The temperature in the measuring point area f is of the order of magnitude which allows the use of commercially available temperature sensors.

Die Trennstelle "warm/kalt" wird über das Regelsystem immer etwa auf dem gleichen Niveau gehalten, so dass eine stets gleichbleibende Temperatur auf der Ebene x und eine vollständige Füllung des Dämpfergehäuses mit Dampf gewährleistet ist.The "hot / cold" separation point is always kept at approximately the same level via the control system, so that a constant temperature at level x and complete filling of the damper housing with steam is ensured.

Wie aus der Druckkurve 28 ersichtlich ist, nimmt der Druck mit zunehmender Entfernung vom Dämpfergehäuse ab und erreicht auf der Ebene y bzw. an der Austrittsöffnung 22 den Wert 0.As can be seen from the pressure curve 28, the pressure decreases with increasing distance from the damper housing and reaches the value 0 on the plane y or at the outlet opening 22.

Claims (7)

1. Method of regulating the steam supply in a steaming chamber (1) for continuous treatment of textile materials (2), by which the actual conditions within the steaming chamber (1) are measured and continually compared with a nominal value through a regulator controlled means, whereby the regulator controlled means is activated by changes in temperature, characterised in that the temperature of the steam atmosphere is measured at a point of measurement (f) outside the steaming chamber (1), within a pipe (3) which is able to communicate freely with the steam atmosphere inside the steaming chamber and with the outside atmosphere, whereby the point of measurement is connected to the region of the lowest steam layer existing within the steaming chamber (1).
2. Method according to claim 1, characterised in that when the temperature at the point of measurement (f) sinks, steam will be supplied to the steaming chamber (1) until the temperature at the point of measurement rises again.
3. Device for regulation of the steam supply in a steaming chamber (1) for the continuous treatment of textile materials (2), with a measuring device for measurement of the actual conditions in the steaming chamber (1), and with a regulator controlled means for continually comparing the actual conditions with a nominal value, whereby the regulator controlled means is able to be activated by changes of temperature at the measuring device, characterised in that the measuring device is a temperature sensor (4) which is arranged outside the steaming chamber (1), within a pipe (3) which is connected at one end to the steaming chamber (1) and is open at its other end (22) to the outside atmosphere, whereby the temperature sensor is connected to the region of the lowest steam layer existing within the steaming chamber.
4. Device according to claim 3, characterised in that the pipe (3) extends beneath the steaming chamber (1) and that the temperature sensor (4) is arranged beneath the steaming chamber (1).
5. Device according to claim 4, characterised in that the pipe (3) possesses a straight section which exhibits numerous connection points (7) for a temperature sensor (4), arranged at a distance from one another.
6. Device according to claims 4 or 5, characterised in that the pipe (3) is connected to a side-wall (21) of the steaming chamber (1).
7. Device according to one of the claims 3 to 6, characterised in that the regulator controlled means possesses a steam control valve (16) in a steam supply pipe (15) leading to the steaming chamber (1), and that the steam control valve (16) is able to be activated by a regulator (17) which compares the temperature as measured at the temperature sensor (4) with a nominal temperature which is the equivalent of a steaming chamber (1) which is completely filled with steam.
EP88810283A 1987-06-19 1988-05-03 Method and apparatus for regulating the supply of steam in a steaming chamber Expired - Lifetime EP0297029B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2321/87A CH673855A5 (en) 1987-06-19 1987-06-19
CH2321/87 1987-06-19

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EP0297029A1 EP0297029A1 (en) 1988-12-28
EP0297029B1 true EP0297029B1 (en) 1990-07-18

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EP (1) EP0297029B1 (en)
JP (1) JPS646163A (en)
CH (1) CH673855A5 (en)
DE (1) DE3860336D1 (en)
ES (1) ES2016420B3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3917126A1 (en) * 1989-05-26 1990-11-29 Babcock Textilmasch METHOD AND ARRANGEMENT FOR REGULATING THE AMOUNT OF STEAM IN DAMPERS OR THE LIKE
DE9300554U1 (en) * 1993-01-18 1994-05-19 Eduard Küsters Maschinenfabrik GmbH & Co KG, 47805 Krefeld System for the liquid and steam treatment of textile webs
US5369968A (en) * 1993-04-15 1994-12-06 Sperotto Rimar S.P.A. Apparatus for continuous steaming and dimensional stabilization of continuous fabric webs
KR100393479B1 (en) * 1996-12-30 2003-12-31 주식회사 효성 Melt extractor for manufacturing nonwoven fabric artificial leather
DE50011009D1 (en) * 1999-05-28 2005-09-29 Moenus Textilmaschinen Gmbh Process for the continuous heat treatment of a textile web, in particular for dye fixing
CN113829545B (en) * 2021-09-27 2023-04-07 江西宏柏新材料股份有限公司 Roll type production device and method for aerogel composite material

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR92751E (en) * 1964-06-08 1968-12-27 Julien Dungler New ultra-fast scouring and bleaching process.
US3318114A (en) * 1964-08-14 1967-05-09 Pottsville Bleaching And Dyein Method and apparatus for setting the color of dyed tubular fabrics
GB1256893A (en) * 1968-07-26 1971-12-15
DE3148576C2 (en) * 1981-09-08 1986-05-22 A. Monforts GmbH & Co, 4050 Mönchengladbach Device for controlling the continuous heat treatment of a textile web of material

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CH673855A5 (en) 1990-04-12
ES2016420B3 (en) 1990-11-01
JPS646163A (en) 1989-01-10
JPH022988B2 (en) 1990-01-22
DE3860336D1 (en) 1990-08-23
EP0297029A1 (en) 1988-12-28

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