EP0148509A1 - Cooling water circuit of a tube heat exchanger with an arrangement for introducing and separating spherical cleaning elements - Google Patents

Cooling water circuit of a tube heat exchanger with an arrangement for introducing and separating spherical cleaning elements Download PDF

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Publication number
EP0148509A1
EP0148509A1 EP84200016A EP84200016A EP0148509A1 EP 0148509 A1 EP0148509 A1 EP 0148509A1 EP 84200016 A EP84200016 A EP 84200016A EP 84200016 A EP84200016 A EP 84200016A EP 0148509 A1 EP0148509 A1 EP 0148509A1
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EP
European Patent Office
Prior art keywords
cooling water
heat exchanger
water line
cleaning bodies
pipe
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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
EP84200016A
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German (de)
French (fr)
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EP0148509B1 (en
Inventor
Werner Dipl.-Ing. Borchert
Peter Handrick
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GEA Energiesystemtechnik GmbH and Co
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GEA Energiesystemtechnik GmbH and Co
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Application filed by GEA Energiesystemtechnik GmbH and Co filed Critical GEA Energiesystemtechnik GmbH and Co
Priority to DE8484200016T priority Critical patent/DE3460203D1/en
Priority to EP19840200016 priority patent/EP0148509B1/en
Publication of EP0148509A1 publication Critical patent/EP0148509A1/en
Application granted granted Critical
Publication of EP0148509B1 publication Critical patent/EP0148509B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies

Definitions

  • the invention relates to a device for introducing and separating spherical cleaning bodies into or out of the cooling water circuit of a tubular heat exchanger or the like, consisting of a sieve device arranged behind the tubular heat exchanger and separating the cleaning bodies from the cooling water line, and a sieve connected to the cooling water line parallel to the tubular heat exchanger.
  • sieve-like safety gear, the supply and discharge pipes and drain pipe are each provided with a shut-off device.
  • spherical cleaning bodies made of foam rubber or the like, the diameter of which is somewhat above the inside diameter of the pipes, are pumped into the cooling water and pressed through the pipes in a known manner. After leaving the tube heat exchanger, they are separated from the cooling water by means of a sieve device and returned to the cooling water flowing to the tube heat exchanger in the circuit. Since the cleaning bodies are subject to wear due to abrasion, they must be removed from the circuit with a corresponding reduction in their diameter and replaced with new cleaning bodies.
  • JP-PS 47 22765 a screen-like safety device arranged in the circuit is known, in which on a screen basket and to a chamber under the strainer a vent pipe provided with a valve is connected in such a way that either the cooling water with the cleaning elements flows into the pipe belonging to the circuit for normal cleaning operations, or the cooling water is directed through the sieve surface to check the cleaning elements and all Cleaning elements can be caught in the strainer basket.
  • the cleaning bodies retained in the sieve basket are then removed and sorted, the cleaning bodies which are too much reduced in diameter being replaced by new ones.
  • the cleaning bodies separated from the cooling water pipe are conveyed together with a quantity of water serving as a carrier by means of a pump arranged in the feed pipe of the catching device from the sieving device via the catching device and one of its discharge pipes into the cooling water pipe lying in front of the tube heat exchanger.
  • a pump which serves to convey a mixture of cleaning bodies and water, is very cumbersome, expensive and prone to failure.
  • the funded cleaning bodies are quickly worn out and destroyed.
  • the invention is therefore based on the object of designing a device of the generic type in such a way that a simpler and gentler transport of the cleaning bodies is achieved.
  • the safety device is provided with a bottom shut-off device and with the drain pipe above the cooling water line or above a sink pot through which the cooling water flows is arranged.
  • This training initially has the advantage that a pressure drop can be used for transport during the catching phase, in which the cleaning bodies of the catching device are retained.
  • the discharge pipes of the safety device between the cooling water pump and the tubular heat exchanger opened into the cooling water line i. H. the area where the highest water pressure of the entire cooling water circuit prevails, which can only be overcome with a feed pump
  • a location is selected which leads to a pressure drop. The location can either be on the suction side of the cooling water pump of the cooling water line, where the lowest water pressure in the cooling water circuit prevails, or on an unpressurized waste water line.
  • the discharge pipe can also be connected to the cooling water line via a pump; since this pump only has to pump water, it can be of simple design. Another significant advantage is that the cleaning bodies collected in the safety gear sink after opening the bottom shut-off element due to their gravity directly into the cooling water line or fall into the sink pot, where they are introduced into the cooling water line by a bypass flow of the cooling water.
  • a catching device with a frustoconical sieve drum, at the lower opening of which the bottom shut-off device is arranged, is particularly suitable.
  • the bottom shut-off device enables the lower sieve opening to be opened essentially over its entire cross section, so that good emptying is achieved.
  • the interception of the cleaning bodies can be improved in that a dome with a tangentially running inlet nozzle and the housing are arranged above the upper opening of the frustoconical sieve drum the safety gear is provided with a tangential drain pipe.
  • the water-cleaning body mixture is accelerated helically by the tangential dome and directed axially into the sieve drum.
  • the cleaning bodies are held back in the sieve drum and the water flows outwards into an annular chamber, from which it continues to flow via the tangentially attached outlet connection.
  • the helical guide in the sieve drum significantly reduces pressure loss.
  • the valve of the supply pipe and the valve of the discharge pipe are closed, and the floor shut-off device is opened so that the cleaning bodies sink directly into the cooling water pipe or into the sink pot, which can be arranged next to the cooling water pipe and connected to it by bypass pipes .
  • the rate of descent can be adjusted if necessary by arranging retaining rings or the like in the cooling water line below the safety gear or in the bypass feed pipe.
  • the invention is based on the knowledge that a completely sufficient cleaning of the tube heat exchanger is also possible with a cyclical or intermittent mode of operation. Cyclic working methods also reduce wear on the cleaning bodies. Both modes of operation can be adjusted by controlling the valves assigned to the safety gear and the floor shut-off device accordingly. According to the invention, the catching device therefore serves not only to control and regenerate the cleaning bodies, but also as a storage container for the cleaning bodies in the phase in which the tubular heat exchanger is not cleaned.
  • cooling water is passed through a cooling water pipe 1 consisting of cooling water pipes 2 by means of a cooling water pump 3 through a tubular heat exchanger 4.
  • a cooling water pipe 1 consisting of cooling water pipes 2 by means of a cooling water pump 3
  • a tubular heat exchanger 4 To clean the tubes of the tube heat exchanger 4, elastically deformable, spherically shaped cleaning bodies made of rubber or plastic, the diameter of which is somewhat above the inside diameter of the tubes, are introduced into the cooling water at certain time intervals and pressed through the tubes.
  • the cleaning bodies separated from the cooling water flow with the sieve 6 of the sieving device 5 are fed together with a small partial flow via a feed pipe 8 provided with a valve 7 and via a further valve 9 to a catching device 10.
  • the catching device 10 has a frustoconical sieve drum 11, the interior of which forms a catching chamber 12 for the cleaning bodies.
  • a bottom shut-off device 13 is arranged under the lower opening of the screening drum 11 and, in the closed position, closes the entire opening cross section of the screening drum 11 and forms a bottom.
  • the discharge pipe 16 is connected on the suction side of the cooling water pump 3 to the cooling water line 1, where the water pressure is lower than in the screening device 5.
  • 1 is arranged vertically above the cooling water pipe 2 and connected to the cooling water pipe 2 via a short emptying pipe 18, so that the cleaning bodies enter gravitationally directly into the cooling water pipe 1 from the collecting chamber 12 when the bottom shut-off element 13 is open.
  • the sinking speed of the cleaning balls can e.g. B. about 0.2 m / sec. be.
  • the bottom shut-off device 13 consists of a shut-off flap 22 mounted in a housing which can be rotated through 90 °, which forms a bottom of the screening drum 11 in the closed position and essentially releases the entire cross section of the screening drum 11 in the open position.
  • a dome 19 with a tangentially running inlet connection 20, through which the inflowing mixture of cleaning bodies and water is accelerated helically and introduced axially into the sieve drum 11, where the cleaning bodies are retained in the collecting chamber 12 while the water flows through the sieve drum 11 into the annular chamber 14 and from there reaches the discharge pipe 16 via a tangentially arranged outlet connection 21.
  • valves 7, 9, 15 and 17 are open and the bottom shut-off device 13 is closed.
  • the valves 9 and 15 are closed and the bottom shut-off device 13 is opened.
  • the valves 7, 17 represent auxiliary organs which are constantly open during operation and only be closed for inspection and repair purposes of the safety device 10 and the devices associated therewith.
  • the control of the valves 9, 15 and the bottom shut-off element 13 can be carried out via electronic control devices.
  • the catching device 10 can also be placed next to the cooling water pipe 2 in cases where an arrangement above the cooling water pipe 2 is not possible for spatial reasons, the auxiliary devices shown in FIG. 3 being used.
  • the safety device 10 equipped with the bottom shut-off device 13 is arranged above a sink pot 23 which is connected to the cooling water pipe 2 by two bypass pipes 24, 25.
  • the bottom shut-off device 13 When the bottom shut-off device 13 is open, the cleaning bodies sink into the sink pot 23 and are entrained by the cooling water flowing in through the bypass pipe 24 and introduced into the cooling water pipe 2 through the bypass pipe 25.
  • a discharge pipe 26 can also be connected to the cooling water line 1 via a pump 28.
  • the valve 27 (auxiliary function) replaces the valve 17.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

1. A cooling water circuit of a tubular heat exchanger (4) or the like having means for the introduction and separation of spherical cleaning members in the form of a screening device (5) disposed after the heat exchanger (4) and separating the cleaning members from the cooling water line (1) and a screen-like interceptor (10) connected to the cooling water line (1) in parallel to the heat exchanger (4), the flow and departure tubes (8, 16) and the emptying tube (18) of the interceptor (10) each having a shutoff element (9, 15, 13 respectively), characterised in that the discharge tube (16) of the interceptor (10) is connected to the cooling water line (1) or the like at a place where the water pressure is lower than in the screening device (5) and the interceptor (10) has a bottom shutoff member (13) and has the emptying tube (18) disposed above the cooling water line (1) or above a fall trap (23) flowed through by the cooling water.

Description

Die Erfindung betrifft eine Einrichtung zum Einleiten und Abscheiden kugelförmiger Reinigungskörper in den bzw. aus dem Kühlwasserkreislauf eines Röhrenwärmetauschers o. dgl., bestehend aus einer hinter dem Röhrenwärmetauscher angeordneten, die Reinigungskörper aus der Kühlwasserleitung abscheidenden Siebvorrichtung und einer parallel zum Röhrenwärmetauscher an die Kühlwasserleitung angeschlossenen, siebartigen Fangvorrichtung, deren Zu- und Ableitungsrohre und Entleerungsrohr mit je einem Absperrorgan versehen sind.The invention relates to a device for introducing and separating spherical cleaning bodies into or out of the cooling water circuit of a tubular heat exchanger or the like, consisting of a sieve device arranged behind the tubular heat exchanger and separating the cleaning bodies from the cooling water line, and a sieve connected to the cooling water line parallel to the tubular heat exchanger. sieve-like safety gear, the supply and discharge pipes and drain pipe are each provided with a shut-off device.

Zur Reinigung der Rohre wassergekühlter Röhrenwärmetauscher o. dgl. werden in bekannter Weise kugelförmige Reinigungskörper aus Schaumgummi o. dgl., deren Durchmesser etwas über dem Innendurchmesser der Rohre liegt, in das Kühlwasser eingepumpt und durch die Rohre gedrückt. Nach Verlassen des Röhrenwärmetauschers werden diese aus dem Kühlwasser mittels einer Siebvorrichtung abgeschieden und im Kreislauf wieder dem dem Röhrenwärmetauscher zuströmenden Kühlwasser zugeleitet. Da die Reinigungskörper durch Abrieb einem Verschleiß ausgesetzt sind, müssen sie bei einer entsprechenden Verringerung ihres Durchmessers aus dem Kreislauf entfernt und durch neue Reinigungskörper ersetzt werden. Hierfür ist aus der JP-PS 47 22765 eine im Kreislauf angeordnete siebartige Fangvorrichtung bekannt, bei der an einem Siebkorb und an eine Kammer unter dem Siebkorb je eine mit einem Ventil versehene Abzugsrohrleitung derart angeschlossen ist, daß entweder für den normalen Reinigungsbetrieb das Kühlwasser mit den Reinigungskörpern in die dem Kreislauf zugehörige Rohrleitung strömt, oder zur Kontrolle der Reinigungskörper das Kühlwasser durch die Siebfläche gelenkt wird und alle Reinigungskörper im Siebkorb gefangen werden. Die im Siebkorb zurückgehaltenen Reinigungskörper werden dann herausgenommen und sortiert, wobei die in ihrem Durchmesser zu stark verringerten Reinigungskörper durch neue ersetzt werden. Bei dieser Einrichtung werden die aus der Kühlwasserleitung abgeschiedenen Reinigungskörper zusammen mit einer als Trägerstoff dienenden Wassermenge mittels einer im Zuleitungsrohr der Fangeinrichtung angeordneten Pumpe von der Siebvorrichtung über die Fangvorrichtung und eines ihrer Ableitungsrohre in die vor dem Röhrenwärmetauscher liegende Kühlwasserleitung gefördert. Eine solche, der Förderung eines Gemisches aus Reinigungskörpern und Wasser dienenden Pumpe ist jedoch im Aufbau sehr umständlich, teuer und störanfällig. Außerdem werden die geförderten Reinigungskörper schnell verschlissen und zerstört.For cleaning the pipes of water-cooled tube heat exchangers or the like, spherical cleaning bodies made of foam rubber or the like, the diameter of which is somewhat above the inside diameter of the pipes, are pumped into the cooling water and pressed through the pipes in a known manner. After leaving the tube heat exchanger, they are separated from the cooling water by means of a sieve device and returned to the cooling water flowing to the tube heat exchanger in the circuit. Since the cleaning bodies are subject to wear due to abrasion, they must be removed from the circuit with a corresponding reduction in their diameter and replaced with new cleaning bodies. For this purpose from JP-PS 47 22765 a screen-like safety device arranged in the circuit is known, in which on a screen basket and to a chamber under the strainer a vent pipe provided with a valve is connected in such a way that either the cooling water with the cleaning elements flows into the pipe belonging to the circuit for normal cleaning operations, or the cooling water is directed through the sieve surface to check the cleaning elements and all Cleaning elements can be caught in the strainer basket. The cleaning bodies retained in the sieve basket are then removed and sorted, the cleaning bodies which are too much reduced in diameter being replaced by new ones. In this device, the cleaning bodies separated from the cooling water pipe are conveyed together with a quantity of water serving as a carrier by means of a pump arranged in the feed pipe of the catching device from the sieving device via the catching device and one of its discharge pipes into the cooling water pipe lying in front of the tube heat exchanger. However, such a pump, which serves to convey a mixture of cleaning bodies and water, is very cumbersome, expensive and prone to failure. In addition, the funded cleaning bodies are quickly worn out and destroyed.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Einrichtung der gattungsgemäßen Art derart auszubilden, daß ein einfacherer und schonenderer Transport der Reinigungskörper erzielt wird.The invention is therefore based on the object of designing a device of the generic type in such a way that a simpler and gentler transport of the cleaning bodies is achieved.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Ableitungsrohr der Fangvorrichtung an einer Stelle, wo der Wasserdruck niedriger als in der Siebvorrichtung ist, an die Kühlwasserleitung o. dgl. angeschlossen und die Fangvorrichtung mit einem Bodenabsperrorgan versehen und mit dem Entleerungsrohr über der Kühlwasserleitung oder über einem vom Kühlwasser durchströmten Sinktopf angeordnet ist.This object is achieved in that the drain pipe of the safety device at a point where the water pressure is lower than in the sieve device, connected to the cooling water line or the like. The safety device is provided with a bottom shut-off device and with the drain pipe above the cooling water line or above a sink pot through which the cooling water flows is arranged.

Diese Ausbildung hat zunächst den Vorteil, daß für den Transport während der Fangphase, in der die Reinigungskörper der Fangvorrichtung zurückgehalten werden, ein Druckgefälle nutzbar gemacht wird. Während bei den bekannten Ausführungen die Ableitungsrohre der Fangvorrichtung zwischen der Kühlwasserpumpe und dem Röhrenwärmetauscher in die Kühlwasserleitung mündeten, d. h. dem Bereich, wo der höchste Wasserdruck des ganzen Kühlwasserkreislaufes herrscht, der sich nur mit einer Förderpumpe überwinden läßt, wird erfindungsgemäß eine Stelle gewählt, die zu einem Druckgefälle führt. Die Stelle kann entweder an der Saugseite der Kühlwasserpumpe der Kühlwasserleitung, wo der niedrigste Wasserdruck des Kühlwasserkreislaufes herrscht, oder an einer drucklosen Abwasserleitung liegen. In seltenen Fällen, wo bei einer Rückführung des Trägerwassers in die Kühlwasserleitung oder ein anderes Leitungssystem die Druckdifferenz nicht ausreichen sollte, kann das Ableitungsrohr auch über eine Pumpe an die Kühlwasserleitung angeschlossen sein; da diese Pumpe nur Wasser zu fördern hat, kann sie von einfacher Ausführung sein. Ein weiterer wesentlicher Vorteil besteht darin, daß die in der Fangvorrichtung gesammelten Reinigungskörper nach dem Öffnen des Bodenabsperrorgans infolge ihrer Schwerkraft unmittelbar in die Kühlwasserleitung absinken oder in den Sinktopf fallen, wo sie von einer Bypass-Strömung des Kühlwassers in die Kühlwasserleitung eingeschleust werden.This training initially has the advantage that a pressure drop can be used for transport during the catching phase, in which the cleaning bodies of the catching device are retained. While in the known designs, the discharge pipes of the safety device between the cooling water pump and the tubular heat exchanger opened into the cooling water line, i. H. the area where the highest water pressure of the entire cooling water circuit prevails, which can only be overcome with a feed pump, according to the invention a location is selected which leads to a pressure drop. The location can either be on the suction side of the cooling water pump of the cooling water line, where the lowest water pressure in the cooling water circuit prevails, or on an unpressurized waste water line. In rare cases, where the pressure difference should not be sufficient when the carrier water is returned to the cooling water line or another line system, the discharge pipe can also be connected to the cooling water line via a pump; since this pump only has to pump water, it can be of simple design. Another significant advantage is that the cleaning bodies collected in the safety gear sink after opening the bottom shut-off element due to their gravity directly into the cooling water line or fall into the sink pot, where they are introduced into the cooling water line by a bypass flow of the cooling water.

Besonders geeignet ist eine Fangvorrichtung mit einer kegelstumpfförmigen Siebtrommel, an deren unterer Öffnung das Bodenabsperrorgan angeordnet ist. Das Bodenabsperrorgan ermöglicht eine Öffnung der unteren Sieböffnung im wesentlichen über ihrem ganzen Querschnitt, so daß eine gute Entleerung erzielt wird. Das Abfangen der Reinigungskörper läßt sich dadurch verbessern, daß über der oberen Öffnung der kegelstumpfförmigen Siebtrommel ein Dom mit einem tangential verlaufenden Einlaufstutzen angeordnet und das Gehäuse der Fangvorrichtung mit einem tangential verlaufenden Ablaufstutzen versehen ist. Das Wasser-Reinigungskörper-Gemisch wird durch den tangential angeströmten Dom schraubenförmig beschleunigt und axial in die Siebtrommel geleitet. In der Fangphase werden die Reinigungskörper in der Siebtrommel zurückgehalten und das Wasser strömt nach außen in eine Ringkammer, aus der es über den tangential angebrachten Ablaufstutzen weiterströmt. Die schraubenförmige Führung in die Siebtrommel verringert den Druckverlust erheblich. Für die Entleerungsphase wird das Ventil des Zuleitungsrohres und das Ventil des Ableitungsrohres geschlossen, und das Bodenabsperrorgan wird geöffnet, so daß die Reinigungskörper unmittelbar in das Kühlwasserrohr oder in den Sinktopf absinken, der neben der Kühlwasserleitung angeordnet und mit dieser durch Bypass-Rohre verbunden sein kann. Die Absinkgeschwindigkeit läßt sich bedarfsweise durch die Anordnung von Stauringen o. dgl. in der Kühlwasserleitung unterhalb der Fangvorrichtung oder im Bypass-Zuleitungsrohr anpassen.A catching device with a frustoconical sieve drum, at the lower opening of which the bottom shut-off device is arranged, is particularly suitable. The bottom shut-off device enables the lower sieve opening to be opened essentially over its entire cross section, so that good emptying is achieved. The interception of the cleaning bodies can be improved in that a dome with a tangentially running inlet nozzle and the housing are arranged above the upper opening of the frustoconical sieve drum the safety gear is provided with a tangential drain pipe. The water-cleaning body mixture is accelerated helically by the tangential dome and directed axially into the sieve drum. In the catching phase, the cleaning bodies are held back in the sieve drum and the water flows outwards into an annular chamber, from which it continues to flow via the tangentially attached outlet connection. The helical guide in the sieve drum significantly reduces pressure loss. For the emptying phase, the valve of the supply pipe and the valve of the discharge pipe are closed, and the floor shut-off device is opened so that the cleaning bodies sink directly into the cooling water pipe or into the sink pot, which can be arranged next to the cooling water pipe and connected to it by bypass pipes . The rate of descent can be adjusted if necessary by arranging retaining rings or the like in the cooling water line below the safety gear or in the bypass feed pipe.

Während bei den bekannten Einrichtungen in Verbindung mit der Förderpumpe für die Reinigungskörper ein ständiger Kreislauf der Reinigungskörper vorgesehen ist, geht die Erfindung von der Erkenntnis aus, daß eine völlig ausreichende Reinigung der Röhrenwärmetauscher auch mit einer zyklischen oder intermittierenden Arbeitsweise möglich ist. Besonders durch eine zyklische Arbeitsweise wird auch der Verschleiß der Reinigungskörper verringert. Beide Arbeitsweisen lassen sich durch eine entprechende Steuerung der der Fangvorrichtung zugeordneten Ventile sowie des Bodenabsperrorgans einstellen. Die Fangvorrichtung dient daher erfindungsgemäß nicht nur der Kontrolle und Regeneration der Reinigungskörper, sondern auch als Aufbewahrungsbehältnis für die Reinigungskörper in der Phase, in der keine Reinigung des Röhrenwärmetauschers stattfindet.While in the known devices in connection with the feed pump for the cleaning bodies, a constant circulation of the cleaning bodies is provided, the invention is based on the knowledge that a completely sufficient cleaning of the tube heat exchanger is also possible with a cyclical or intermittent mode of operation. Cyclic working methods also reduce wear on the cleaning bodies. Both modes of operation can be adjusted by controlling the valves assigned to the safety gear and the floor shut-off device accordingly. According to the invention, the catching device therefore serves not only to control and regenerate the cleaning bodies, but also as a storage container for the cleaning bodies in the phase in which the tubular heat exchanger is not cleaned.

Die Erfindung ist in der Zeichnung mit zwei Ausführungsbeispielen dargestellt; es zeigt:

  • Fig. 1 eine Einrichtung zum Einleiten und Abscheiden kugelförmiger Reinigungskörper in den bzw. aus dem Kühlwasserkreislauf eines Röhrenwärmetauschers in einer schematischen Darstellung,
  • Fig. 2 die der Einrichtung nach Fig. 1 zugehörige Fangvorrichtung in einem größeren Maßstab und
  • Fig. 3 eine Fangvorrichtung entsprechend Fig. 2, jedoch in einer Anordnung neben dem Kühlwasserrohr.
The invention is shown in the drawing with two embodiments; it shows:
  • 1 shows a device for introducing and separating spherical cleaning bodies into and out of the cooling water circuit of a tubular heat exchanger in a schematic illustration,
  • Fig. 2 the safety device associated with the device of FIG. 1 on a larger scale and
  • Fig. 3 is a safety device corresponding to FIG. 2, but in an arrangement next to the cooling water pipe.

Wie Fig. 1 zeigt, wird Kühlwasser durch eine aus Kühlwasserrohren 2 bestehende Kühlwasserleitung 1 mittels einer Kühlwasserpumpe 3 durch einen Röhrenwärmetauscher 4 geführt. Zur Reinigung der Rohre des Röhrenwärmetauschers 4 werden elastisch verformbare, kugelförmig ausgebildete Reinigungskörper aus Gummi oder Kunststoff, deren Durchmesser etwas über dem Innendurchmesser der Rohre liegt, in bestimmten Zeitabständen in das Kühlwasser eingeleitet und durch die Rohre gedrückt. Nach Verlassen des Röhrenwärmetauschers 4 werden sie mittels einer Siebvorrichtung 5 aus dem Hauptstrom des Kühlwassers abgeschieden und über ein Rohrleitungssystem im Kreislauf wieder in den Hauptstrom eingeleitet. Die mit dem Sieb 6 der Siebvorrichtung 5 aus dem Kühlwasserstrom abgeschiedenen Reinigungskörper werden zusammen mit einem kleinen Teilstrom über ein mit einem Ventil 7 versehenes Zuleitungsrohr 8 und über ein weiteres Ventil 9 einer Fangvorrichtung 10 zugeführt. Die Fangvorrichtung 10 besitzt eine kegelstumpfförmige Siebtrommel 11, deren Innenraum eine Fangkammer 12 für die Reinigungskörper bildet. Unter der unteren Öffnung der Siebtrommel 11 ist ein Bodenabsperrorgan 13 angeordnet, das in der Schließstellung den ganzen Öffnungsquerschnitt der Siebtrommel 11 verschließt und einen Boden bildet.As shown in FIG. 1, cooling water is passed through a cooling water pipe 1 consisting of cooling water pipes 2 by means of a cooling water pump 3 through a tubular heat exchanger 4. To clean the tubes of the tube heat exchanger 4, elastically deformable, spherically shaped cleaning bodies made of rubber or plastic, the diameter of which is somewhat above the inside diameter of the tubes, are introduced into the cooling water at certain time intervals and pressed through the tubes. After leaving the tube heat exchanger 4, they are separated from the main stream of the cooling water by means of a sieving device 5 and reintroduced into the main stream via a pipeline system. The cleaning bodies separated from the cooling water flow with the sieve 6 of the sieving device 5 are fed together with a small partial flow via a feed pipe 8 provided with a valve 7 and via a further valve 9 to a catching device 10. The catching device 10 has a frustoconical sieve drum 11, the interior of which forms a catching chamber 12 for the cleaning bodies. A bottom shut-off device 13 is arranged under the lower opening of the screening drum 11 and, in the closed position, closes the entire opening cross section of the screening drum 11 and forms a bottom.

Zwischen der Siebtrommel 11 und dem Gehäuse der Fangvorrichtung 10 befindet sich eine Ringkammer 14, an welche über ein Ventil 15 ein mit einem weiteren Ventil 17 versehenes Ableitungsrohr 16 angeschlossen ist. Dieses Ableitungsrohr 16 ist auf der Saugseite der Kühlwasserpumpe 3 an die Kühlwasserleitung 1 angeschlossen, wo ein geringerer Wasserdruck als in der Siebvorrichtung 5 herrscht. Die Fangvorrichtung 10 ist bei dem Ausführungsbeispiel nach Fig. 1 lotrecht über dem Kühlwasserrohr 2 angeordnet und über ein kurzes Entleerungsrohr 18 mit dem Kühlwasserrohr 2 verbunden, so daß die Reinigungskörper aus der Fangkammer 12 bei geöffnetem Bodenabsperrorgan 13 durch Schwerkraft unmittelbar in die Kühlwasserleitung 1 gelangen. Die Sinkgeschwindigkeit der Reinigungskugeln kann z. B. etwa 0,2 m/sec. betragen.Between the sieve drum 11 and the housing of the catching device 10 there is an annular chamber 14, to which a discharge pipe 16 provided with a further valve 17 is connected via a valve 15. This discharge pipe 16 is connected on the suction side of the cooling water pump 3 to the cooling water line 1, where the water pressure is lower than in the screening device 5. 1 is arranged vertically above the cooling water pipe 2 and connected to the cooling water pipe 2 via a short emptying pipe 18, so that the cleaning bodies enter gravitationally directly into the cooling water pipe 1 from the collecting chamber 12 when the bottom shut-off element 13 is open. The sinking speed of the cleaning balls can e.g. B. about 0.2 m / sec. be.

Wie Fig. 2 zeigt, besteht das Bodenabsperrorgan 13 aus einer in einem Gehäuse um 90° drehbar gelagerten Absperrklappe 22, die in der Schließstellung einen Boden der Siebtrommel 11 bildet und in der Offenstellung im wesentlichen den ganzen Querschnitt der Siebtrommel 11 freigibt. Über der oberen Öffnung der Siebtrommel 11 ist ein Dom 19 mit einem tangential verlaufenden Einlaufstutzen 20 vorhanden, durch den das einströmende Gemisch aus Reinigungskörpern und Wasser schraubenförmig beschleunigt und axial in die Siebtrommel 11 eingeleitet wird, wo die Reinigungskörper in der Fangkammer 12 zurückgehalten werden, während das Wasser durch die Siebtrommel 11 in die Ringkammer 14 strömt und von dort über einen tangential angeordneten Ablaufstutzen 21 in das Ableitungsrohr 16 gelangt.As shown in FIG. 2, the bottom shut-off device 13 consists of a shut-off flap 22 mounted in a housing which can be rotated through 90 °, which forms a bottom of the screening drum 11 in the closed position and essentially releases the entire cross section of the screening drum 11 in the open position. Above the upper opening of the sieve drum 11 there is a dome 19 with a tangentially running inlet connection 20, through which the inflowing mixture of cleaning bodies and water is accelerated helically and introduced axially into the sieve drum 11, where the cleaning bodies are retained in the collecting chamber 12 while the water flows through the sieve drum 11 into the annular chamber 14 and from there reaches the discharge pipe 16 via a tangentially arranged outlet connection 21.

In der Fangphase sind die Ventile 7,9,15 und 17 geöffnet und das Bodenabsperrorgan 13 ist geschlossen. Zum Einleiten der Reinigungskörper in die Kühlwasserleitung 1 werden die Ventile 9 und 15 geschlossen und das Bodenabsperrorgan 13 wird geöffnet. Die Ventile 7,17 stellen Hilfsorgane dar,-die während des Betriebes ständig geöffnet und nur für Inspektions- und Reparaturzwecke der Fangvorrichtung 10 und der dieser zugehörigen Einrichtungen geschlossen werden. Die Steuerung der Ventile 9,15 und des Bodenabsperrorgans 13 kann über elektronische Steuereinrichtungen erfolgen.In the catching phase, the valves 7, 9, 15 and 17 are open and the bottom shut-off device 13 is closed. To introduce the cleaning bodies into the cooling water line 1, the valves 9 and 15 are closed and the bottom shut-off device 13 is opened. The valves 7, 17 represent auxiliary organs which are constantly open during operation and only be closed for inspection and repair purposes of the safety device 10 and the devices associated therewith. The control of the valves 9, 15 and the bottom shut-off element 13 can be carried out via electronic control devices.

Die Fangvorrichtung 10 kann auch in Fällen, wo eine Anordnung über dem Kühlwasserrohr 2 aus räumlichen Gründen nicht möglich ist, neben dem Kühlwasserrohr 2 aufgestellt werden, wobei die in Fig. 3 gezeigten Hilfseinrichtungen Anwendung finden. Bei dieser Ausführung ist die mit dem Bodenabsperrorgan 13 ausgerüstete Fangvorrichtung 10 über einem Sinktopf 23 angeordnet, der durch zwei Bypass-Rohre 24,25 an das Kühlwasserrohr 2 angeschlossen ist. Bei geöffnetem Bodenabsperrorgan 13 sinken die Reinigungskörper in den Sinktopf 23 und werden von dem durch das Bypass-Rohr 24 einströmende Kühlwasser mitgerissen und durch das Bypass-Rohr 25 in das Kühlwasserrohr 2 eingeleitet.The catching device 10 can also be placed next to the cooling water pipe 2 in cases where an arrangement above the cooling water pipe 2 is not possible for spatial reasons, the auxiliary devices shown in FIG. 3 being used. In this embodiment, the safety device 10 equipped with the bottom shut-off device 13 is arranged above a sink pot 23 which is connected to the cooling water pipe 2 by two bypass pipes 24, 25. When the bottom shut-off device 13 is open, the cleaning bodies sink into the sink pot 23 and are entrained by the cooling water flowing in through the bypass pipe 24 and introduced into the cooling water pipe 2 through the bypass pipe 25.

Sollte in bestimmten Fällen die Druckdifferenz nicht ausreichen, um eine Strömung durch die Fangvorrichtung 10 zu erzeugen, oder lassen die örtlichen Verhältnisse einen Anschluß des Ableitungsrohres 16 an die Kühlwasserleitung 1 nicht zu, kann, wie in Fig. 1 durch gestrichelte Linien angedeutet ist, anstelle des Ableitungsrohres 16 ein Ableitungsrohr 26 auch über eine Pumpe 28 an die Kühlwasserleitung 1 angeschlossen werden. Das Ventil 27 (Hilfsfunktion) tritt an die Stelle des Ventils 17.Should, in certain cases, the pressure difference not be sufficient to produce a flow through the safety device 10, or if the local conditions do not allow the discharge pipe 16 to be connected to the cooling water line 1, as indicated in FIG. 1 by dashed lines, instead of of the discharge pipe 16, a discharge pipe 26 can also be connected to the cooling water line 1 via a pump 28. The valve 27 (auxiliary function) replaces the valve 17.

Claims (6)

I. Einrichtung zum Einleiten und Abscheiden kugelförmiger Reinigungskörper in den bzw. aus dem Kühlwasserkreislauf eines Röhrenwärmetauschers (4) o. dgl., bestehend aus einer hinter dem Röhrenwärmetauscher (4) angeordneten, die Reinigungskörper aus der Kühlwasserleitung (1) abscheidenden Siebvorrichtung (5) und einer parallel zum Röhrenwärmetauscher (4) an die Kühlwasserleitung (1) angeschlossenen, siebartigen Fangvorrichtung (10), deren Zu- und Ableitungsrohre (8,16) und Entleerungsrohr (18) mit je einem Absperrorgan (9,15 bzw. 13) versehen sind, dadurch gekennzeichnet, daß das Ableitungsrohr (16) der Fangvorrichtung (10) an einer Stelle, wo der Wasserdruck niedriger als in der Siebvorrichtung (5) ist, an die Kühlwasserleitung (1) o. dgl. angeschlossen und die Fangvorrichtung (10) mit einem Bodenabsperrorgan (13) versehen und mit dem Entleerungsrohr (18) über der Kühlwasserleitung (1) oder über einem vom Kühlwasser durchströmten Sinktopf (23) angeordnet ist.I. Device for introducing and separating spherical cleaning bodies into or out of the cooling water circuit of a tubular heat exchanger (4) or the like, consisting of a screening device (5) arranged behind the tubular heat exchanger (4) and separating the cleaning bodies from the cooling water line (1) and a screen-like trap (10) connected to the cooling water line (1) parallel to the tube heat exchanger (4), the supply and discharge pipes (8, 16) and drain pipe (18) each with a shut-off device (9, 15 and 13) characterized in that the discharge pipe (16) of the safety device (10) is connected to the cooling water line (1) or the like at a point where the water pressure is lower than in the sieve device (5), and the safety device (10) provided with a bottom shut-off device (13) and with the drain pipe (18) above the cooling water line (1) or above a sink pot (23) through which cooling water flows. 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Ableitungsrohr (16) der Fangvorrichtung (10) auf der Saugseite der Kühlwasserpumpe (3) an die Kühlwasserleitung (1) o. dgl. angeschlossen ist.2. Device according to claim 1, characterized in that the discharge pipe (16) of the catching device (10) on the suction side of the cooling water pump (3) to the cooling water line (1) or the like is connected. 3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Ableitungsrohr (26)über eine Pumpe (28) an die Kühlwasserleitung (1) o. dgl. angeschlossen ist.3. Device according to claim 1, characterized in that the discharge pipe (26) via a pump (28) to the cooling water line (1) o. 4. Einrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Fangvorrichtung (10) mit einer kegelstumpfförmigen Siebtrommel (11) versehen ist, an deren unterer Öffnung das Bodenabsperrorgan (13) angeordnet ist.4. Device according to one of claims 1 to 3, characterized in that the catching device (10) is provided with a frustoconical sieve drum (11), at the lower opening of which the bottom shut-off element (13) is arranged. 5. Einrichtung nach Anspruch 4, dadurch gekennzeichnet, daß über der oberen Öffnung der kegelstumpfförmigen Siebtrommel (11) ein Dom (19) mit einem tangential verlaufenden Einlaufstutzen (20) angeordnet und das Gehäuse der Fangvorrichtung (10) mit einem tangential verlaufenden Ablaufstutzen (21) versehen ist.5. Device according to claim 4, characterized in that above the upper opening of the frustoconical sieve drum (11) has a dome (19) with a tangential inlet connection (20) and the housing of the safety device (10) with a tangential outlet connection (21 ) is provided. 6. Einrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Sinktopf (23) neben der Kühlwasserleitung (1) angeordnet und mit dieser durch Bypass-Rohre (24,25) verbunden ist.6. Device according to one of claims 1 to 5, characterized in that the sink pot (23) next to the cooling water line (1) and connected to it by bypass pipes (24, 25).
EP19840200016 1984-01-09 1984-01-09 Cooling water circuit of a tube heat exchanger with an arrangement for introducing and separating spherical cleaning elements Expired EP0148509B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8484200016T DE3460203D1 (en) 1984-01-09 1984-01-09 Cooling water circuit of a tube heat exchanger with an arrangement for introducing and separating spherical cleaning elements
EP19840200016 EP0148509B1 (en) 1984-01-09 1984-01-09 Cooling water circuit of a tube heat exchanger with an arrangement for introducing and separating spherical cleaning elements

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EP19840200016 EP0148509B1 (en) 1984-01-09 1984-01-09 Cooling water circuit of a tube heat exchanger with an arrangement for introducing and separating spherical cleaning elements

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EP0148509A1 true EP0148509A1 (en) 1985-07-17
EP0148509B1 EP0148509B1 (en) 1986-06-11

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4865121A (en) * 1986-08-29 1989-09-12 Ben Dosa Chaim Cleaning system for fluid-conducting tubing
FR2668083A1 (en) * 1990-10-18 1992-04-24 Jackson Philip Ball-type cleaning device particularly for plate-type heat exchanger
WO1995000811A1 (en) * 1993-06-23 1995-01-05 Taprogge Gmbh Apparatus for transferring cleaning bodies for a heat exchanger through which can flow a cooling fluid
EP0728286A1 (en) * 1993-11-18 1996-08-28 C.Q.M. Ltd. Cleaning system for cleaning the inside of fluid conducting tubing and associated apparatus
US6070652A (en) * 1996-06-21 2000-06-06 Taprogge Gmbh Lock for balls for cleaning cooling systems
WO2002055174A1 (en) * 2001-01-14 2002-07-18 Ball-Tech Energy Ltd. Apparatus for separating solids from a feed fluid
FR2939338A1 (en) * 2008-12-10 2010-06-11 Beaudrey & Cie A BALL CLEANING SYSTEM, IN PARTICULAR FOR A PLATE HEAT EXCHANGER

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1089182A (en) * 1952-12-19 1955-03-15 Elektrochemisches Kombinat Bitterfeld Veb Process for heat exchange through the walls of tubes
GB1024150A (en) * 1965-02-25 1966-03-30 Taprogge Reinigungsanlagen A process and equipment for the supply of cleaning bodies to a tubular heat exchanger
GB2062802A (en) * 1979-11-06 1981-05-28 Taprogge Reinigungsanlagen Fue Tube cleaning device
DE3125503A1 (en) * 1980-06-30 1982-03-25 Hitachi, Ltd., Tokyo SORTING DEVICE
EP0087645A2 (en) * 1982-03-02 1983-09-07 Taprogge Gesellschaft mbH Apparatus for cleaning heat exchanger pipes and method of running such an apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1089182A (en) * 1952-12-19 1955-03-15 Elektrochemisches Kombinat Bitterfeld Veb Process for heat exchange through the walls of tubes
GB1024150A (en) * 1965-02-25 1966-03-30 Taprogge Reinigungsanlagen A process and equipment for the supply of cleaning bodies to a tubular heat exchanger
GB2062802A (en) * 1979-11-06 1981-05-28 Taprogge Reinigungsanlagen Fue Tube cleaning device
DE3125503A1 (en) * 1980-06-30 1982-03-25 Hitachi, Ltd., Tokyo SORTING DEVICE
EP0087645A2 (en) * 1982-03-02 1983-09-07 Taprogge Gesellschaft mbH Apparatus for cleaning heat exchanger pipes and method of running such an apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4865121A (en) * 1986-08-29 1989-09-12 Ben Dosa Chaim Cleaning system for fluid-conducting tubing
EP0417332A1 (en) * 1986-08-29 1991-03-20 Ball Technic Israel Ltd. Cleaning system for fluidconducting tubing
FR2668083A1 (en) * 1990-10-18 1992-04-24 Jackson Philip Ball-type cleaning device particularly for plate-type heat exchanger
US5630471A (en) * 1993-06-23 1997-05-20 Taprogge Gmbh Apparatus for transferring cleaning bodies for a heat exchange through which can flow a cooling fluid
AU670886B2 (en) * 1993-06-23 1996-08-01 Taprogge Gmbh Apparatus for transferring cleaning bodies for a heat exchanger through which can flow a cooling fluid
WO1995000811A1 (en) * 1993-06-23 1995-01-05 Taprogge Gmbh Apparatus for transferring cleaning bodies for a heat exchanger through which can flow a cooling fluid
EP0728286A1 (en) * 1993-11-18 1996-08-28 C.Q.M. Ltd. Cleaning system for cleaning the inside of fluid conducting tubing and associated apparatus
EP0728286A4 (en) * 1993-11-18 1998-02-25 Cqm Ltd Cleaning system for cleaning the inside of fluid conducting tubing and associated apparatus
US6070652A (en) * 1996-06-21 2000-06-06 Taprogge Gmbh Lock for balls for cleaning cooling systems
WO2002055174A1 (en) * 2001-01-14 2002-07-18 Ball-Tech Energy Ltd. Apparatus for separating solids from a feed fluid
FR2939338A1 (en) * 2008-12-10 2010-06-11 Beaudrey & Cie A BALL CLEANING SYSTEM, IN PARTICULAR FOR A PLATE HEAT EXCHANGER
EP2239064A1 (en) * 2008-12-10 2010-10-13 E. BEAUDREY & Cie. Ball cleaning system, particularly for a plate heat exchanger
US8474082B2 (en) 2008-12-10 2013-07-02 E. Beaudrey Et Cie Cleaning system with balls, in particular for a heat exchanger of the plate type

Also Published As

Publication number Publication date
DE3460203D1 (en) 1986-07-17
EP0148509B1 (en) 1986-06-11

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