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EP0148509B1 - Circuit d'eau de refroidissement d'un échangeur de chaleur à tubes avec un dispositif pour introduire et séparer des éléments nettoyants sphériques - Google Patents

Circuit d'eau de refroidissement d'un échangeur de chaleur à tubes avec un dispositif pour introduire et séparer des éléments nettoyants sphériques Download PDF

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Publication number
EP0148509B1
EP0148509B1 EP19840200016 EP84200016A EP0148509B1 EP 0148509 B1 EP0148509 B1 EP 0148509B1 EP 19840200016 EP19840200016 EP 19840200016 EP 84200016 A EP84200016 A EP 84200016A EP 0148509 B1 EP0148509 B1 EP 0148509B1
Authority
EP
European Patent Office
Prior art keywords
cooling water
heat exchanger
interceptor
water circuit
water line
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
Application number
EP19840200016
Other languages
German (de)
English (en)
Other versions
EP0148509A1 (fr
Inventor
Werner Dipl.-Ing. Borchert
Peter Handrick
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.)
GEA Energiesystemtechnik GmbH and Co
Original Assignee
GEA Energiesystemtechnik GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEA Energiesystemtechnik GmbH and Co filed Critical GEA Energiesystemtechnik GmbH and Co
Priority to DE8484200016T priority Critical patent/DE3460203D1/de
Priority to EP19840200016 priority patent/EP0148509B1/fr
Publication of EP0148509A1 publication Critical patent/EP0148509A1/fr
Application granted granted Critical
Publication of EP0148509B1 publication Critical patent/EP0148509B1/fr
Expired legal-status Critical Current

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Classifications

    • 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 the cooling water circuit of a tubular heat exchanger o
  • Supply and discharge pipes and drain pipes are each equipped 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 tubes, are pumped into the cooling water and pressed through the tubes 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.
  • a arranged sieve-like safety device in which a strainer pipe provided with a valve is connected to a strainer basket and to a chamber under the strainer basket in such a way that either the cooling water for normal cleaning operation the cleaning bodies flow into the pipeline belonging to the circuit, or the cooling water is directed through the sieve surface to check the cleaning bodies and all cleaning bodies are caught in the sieve 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 is used 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 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.
  • 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.
  • 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 body can be improved in that a dome with a tangential inlet nozzle is arranged above the upper opening of the frustoconical sieve drum and the housing of the safety gear is provided with a tangential outlet nozzle.
  • the water-cleaning body mixture is accelerated helically by the tangential dome and directed axially into the sieve drum.
  • the cleaning bodies are in the sieve drum retained and the water flows outwards into an annular chamber, from which it continues to flow via the tangentially attached drain socket.
  • 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.
  • 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.
  • 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 16, so that the cleaning bodies enter the cooling water pipe by gravity 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 in the closed position forms a bottom of the screening drum 11 and in the open position essentially clears the entire cross section of the screening drum 11.
  • 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 that are constantly open during operation and closed only for inspection and repair purposes of the safety device 10 and the devices associated with it will.
  • 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 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.

Landscapes

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

Claims (6)

1. Circuit d'eau de refroidissement d'un échangeur de chaleur tubulaire (4) ou d'un appareil similaire, ayant un dispositif d'introduction et de séparation d'eléments sphériques de nettoyage, constitué d'un dispositif de tamisage (5), disposé en aval de l'échangeur de chaleur tubulaire (4) et separant les éléments de nettoyage du conduit pour l'eau de refroidissement (1), et un dispositif de captage (10), de type à tamis raccordé au conduit pour l'eau, de type à tamis, raccordé au conduit pour l'eau de refroidissement et dont les conduits d'entrée et de sortie (8, 16) et de vidange (18) sont munis chacun d'un organe d'obturation (9, 15 et 13), caractérisé en ce que le conduit de sortie (16) du dispositif de captage (10) est en un emplacement où la pression de l'eau est plus basse que dans le dispositif de tamisage (5), raccordé au conduit pour l'eau de refroidissement ou à un conduit similaire et le dispositif de captage (10) est muni d'un organe d'obturation du fond (13) et est disposé avec le conduit de vidange (18) au-dessus du conduit pour l'eau de refroidissement (1) ou au-dessus d'un pot de descente (23).
2. Circuit d'eau de refroidissement suivant la revendication 1, caractérisé en ce que le conduit de sortie (16) du dispositif de captage (10) est raccordé au conduit pour l'eau de refroidissement (1) ou à un conduit similaire, du côté de l'aspiration de la pompe pour l'eau de refroidissement (3).
3. Circuit d'eau de refroidissement suivant la revendication 1, caractérisé en ce que le conduit de sortie (26) est raccordé au conduit pour l'eau de refroidissement (1) par une pompe (28).
4. Circuit d'eau de refroidissement suivant l'une des revendications 1 à 3, caractérisé en ce que le dispositif de captage (10) est muni d'un tambour de tamisage (11) en forme de tronc de cône, à l'ouverture inférieure duquel est disposé l'organe d'obturation du fond (13).
5. Circuit d'eau de refroidissement suivant la revendication 4, caractérisé en ce qu'au-dessus de l'ouverture supérieure du tambour de tamisage (11) en forme de tronc de cône est dispose un dôme (19) à embout d'entrée (20) s'étendant tangentiellement, et le corps du dispositif de captage (10) est muni d'un embout de sortie (21) s'étendant tangentiellement.
6. Circuit d'eau de refroidissement suivant l'une des revendications 1 à 5, caractérisé en ce que le pot de descente (23) est disposé à côté du conduit pour l'eau de refroidissement (1) et communique avec celui-ci, par des conduits de dérivation (24, 25).
EP19840200016 1984-01-09 1984-01-09 Circuit d'eau de refroidissement d'un échangeur de chaleur à tubes avec un dispositif pour introduire et séparer des éléments nettoyants sphériques Expired EP0148509B1 (fr)

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 (fr) 1984-01-09 1984-01-09 Circuit d'eau de refroidissement d'un échangeur de chaleur à tubes avec un dispositif pour introduire et séparer des éléments nettoyants sphériques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19840200016 EP0148509B1 (fr) 1984-01-09 1984-01-09 Circuit d'eau de refroidissement d'un échangeur de chaleur à tubes avec un dispositif pour introduire et séparer des éléments nettoyants sphériques

Publications (2)

Publication Number Publication Date
EP0148509A1 EP0148509A1 (fr) 1985-07-17
EP0148509B1 true EP0148509B1 (fr) 1986-06-11

Family

ID=8192402

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840200016 Expired EP0148509B1 (fr) 1984-01-09 1984-01-09 Circuit d'eau de refroidissement d'un échangeur de chaleur à tubes avec un dispositif pour introduire et séparer des éléments nettoyants sphériques

Country Status (2)

Country Link
EP (1) EP0148509B1 (fr)
DE (1) DE3460203D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL79885A0 (en) * 1986-08-29 1986-11-30 Chaim Ben Dosa Cleaning system for fluids-conducting tubing
FR2668083B1 (fr) * 1990-10-18 1993-01-08 Jackson Philip Dispositif de nettoyage a billes, notamment pour echangeur de chaleur a plaques.
DE9309320U1 (de) * 1993-06-23 1994-11-03 Taprogge GmbH, 58300 Wetter Vorrichtung zum Überführen von Reinigungskörpern
IL111666A (en) * 1993-11-18 1996-10-31 Cqm Ltd Cleaning system for cleaning the face of liquid conductor pipes and an ancillary device
DE29610900U1 (de) * 1996-06-21 1997-10-16 Taprogge GmbH, 58300 Wetter Kugelschleuse für eine Einrichtung zum Rückführen von Kugeln zum Reinigen der Rohre von Kühlsystemen
WO2002055174A1 (fr) * 2001-01-14 2002-07-18 Ball-Tech Energy Ltd. Appareil de separation de solides d'avec un liquide d'apport
FR2939338B1 (fr) * 2008-12-10 2011-05-06 Beaudrey & Cie Systeme de nettoyage a billes, notamment pour echangeur de chaleur a plaques

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1089182A (fr) * 1952-12-19 1955-03-15 Elektrochemisches Kombinat Bitterfeld Veb Procédé pour l'échange de chaleur à travers les parois des 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
JPS5713029A (en) * 1980-06-30 1982-01-23 Hitachi Ltd Washing sponge ball selector
DE3207466A1 (de) * 1982-03-02 1983-09-15 Taprogge Gesellschaft mbH, 4000 Düsseldorf Vorrichtung zum reinigen von waermetauscher-roehren und verfahren zum betrieb einer derartigen vorrichtung

Also Published As

Publication number Publication date
EP0148509A1 (fr) 1985-07-17
DE3460203D1 (en) 1986-07-17

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