EP0035420A2 - Vorrichtung zur Reinigung von Plattenwärmetauschern - Google Patents

Vorrichtung zur Reinigung von Plattenwärmetauschern Download PDF

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Publication number
EP0035420A2
EP0035420A2 EP81400171A EP81400171A EP0035420A2 EP 0035420 A2 EP0035420 A2 EP 0035420A2 EP 81400171 A EP81400171 A EP 81400171A EP 81400171 A EP81400171 A EP 81400171A EP 0035420 A2 EP0035420 A2 EP 0035420A2
Authority
EP
European Patent Office
Prior art keywords
masks
plates
brushes
tilting
parallel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81400171A
Other languages
English (en)
French (fr)
Other versions
EP0035420B1 (de
EP0035420A3 (en
Inventor
Francis Gagneraud
Michel Gagneraud
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.)
Entreprise Gagneraud Pere et Fils
Original Assignee
Entreprise Gagneraud Pere et Fils
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 Entreprise Gagneraud Pere et Fils filed Critical Entreprise Gagneraud Pere et Fils
Priority to AT81400171T priority Critical patent/ATE5101T1/de
Publication of EP0035420A2 publication Critical patent/EP0035420A2/de
Publication of EP0035420A3 publication Critical patent/EP0035420A3/fr
Application granted granted Critical
Publication of EP0035420B1 publication Critical patent/EP0035420B1/de
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
    • F28G3/00—Rotary appliances
    • 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
    • F28G15/00—Details
    • F28G15/10—Masks for delimiting area to be cleaned

Definitions

  • the present invention relates to exchanger cleaning devices and more particularly to mobile cleaning stations.
  • an object of the invention is to provide a rapid method for cleaning the plate of heat exchangers.
  • Another object of the invention is to provide a device allowing the automated cleaning of the plates.
  • Another object of the invention is to provide a device allowing effective cleaning, only by means of mechanical brushing and washing with water. Indeed, one wishes to avoid any stripper or chemical which could become a contaminant in a nuclear power station or a refinery.
  • a cleaning process essentially comprising the following steps: pre-spacing the plates to be treated, setting up a cleaning device with low and high masks and brushes, tilting the low masks and their blocking, the tilting of the high masks and their blocking, the spacing of the high and low masks, the tilting of the brushes and their blocking, the translation of brushes from bottom to top of the surfaces of the plates then from top to bottom, while they are rotating and water is being sprayed, then tilting the brushes and masks in reverse and moving the treated plates.
  • a brush is applied against a surface of the plate to be cleaned and another brush is applied against the surface of the next plate.
  • This pair of brushes is actuated by a single motor fitted with a gear such that the first brush rotates in the opposite direction to the direction of rotation of the second brush.
  • the brushes are all parallel and during the cleaning cycle they go up and down along the plates to be cleaned.
  • complete brushing of each face of the plate is carried out in a few seconds. Since several pairs of brushes are used, several plates can be brushed simultaneously, which further increases the speed of cleaning.
  • the spacing of the masks makes it possible to apply them against the joints of the plates and to maintain the latter in the separated position.
  • the masks have any shape such that in the tilted position, they cover the plate seals of the exchanger.
  • the cleaning device can be brought in front of the plates.
  • These plates are separated in parallel and as the brushes and the masks can tilt, they come to be interposed between the plates to proceed on the one hand to the cleaning of the plates and on the other hand to the protection of the joints.
  • the masks have an additional function which is to keep the plates of the exchanger in the separated position.
  • strippers can be sprayed if desired.
  • chemicals are to be avoided for cleaning nuclear power plant exchangers, any contamination being avoided.
  • the possibility of having significant water pressure replaces the addition of stripper.
  • an exchanger 1 mainly consisting of a multitude of parallel plates 2 and capable of sliding along the slide 3a. These plates are generally provided with openings comprising seals 3.
  • the liquid to be cooled circulates between the plates 2, while a cooling fluid circulates in a different direction so that the heat flow is transmitted from a fluid to the other.
  • the liquid flowing between the plates is usually water. Consequently, deposits can form on the face of each plate wall, the thickness of which increases with time.
  • the station below according to the invention is used.
  • This device 4 (see FIG. 2) is mobile thanks to two wheels 5 which move in a rail 6.
  • a chassis 7 rests on the wheels 5 and the wheels 8 which are parallel to them.
  • Angle bars 9 in U support two carriages 10 which can be raised or lowered along the angles which are provided with rollers or wheels.
  • the motor shaft 11 drives a chain 12 which itself actuates the carriages 10.
  • the latter are provided with plates 13 supporting four motors 14 each driving two shafts 15 in opposite directions, by means of a gear (not shown) .
  • Each shaft 15 actuates a cylindrical brush 16. Consequently, the device comprises eight brushes rotating in pairs in opposite directions.
  • the plates 13 are connected by bearing support plates (not shown). In addition, they can rotate around the tilting shaft 17.
  • the angles 9 are fixed to a high frame 7 '.
  • Chassis 7 and 7 ' are each connected with eight masks 18 and 18 '.- Each mask 18 and 18' is movable around an axis 19 and 19 'and can move from the vertical position (shown in solid lines in Figure 2) to the horizontal position (shown in broken lines). All the masks 18 are parallel and equidistant, as well as the masks 18 '.
  • the procedure is as follows: the plates are moved aside so as to leave four interstices 20. Then the mobile cleaning station 4 is brought, allowing it to roll in the rail 6, in front of the separated plates. These preliminary operations are not automatic, but we understand that they can become automatic if necessary.
  • the mobile station is not motorized in this exemplary embodiment. However, we also understand that it can be.
  • the automatic cleaning cycle therefore begins.
  • the eight masks tilt around axis 19, according to arrow B ( Figure 2).
  • the masks are rotated using four jacks 21 (FIG. 4), each rod T of which is fixed to one end 23 of the rigid rod 24, the other end of which is fixed to the mask 18.
  • the end 23 undergoing translation, the mask 18 undergoes a rotation.
  • To tilt the mask in the direction of arrow B it suffices to actuate the jack 21 in the opposite direction.
  • the low masks are blocked in this tilted position, so that the seals 3 are constantly protected. This blocking is done by means of cylinders, the rods of which engage in an orifice made in the masks. There are four of these low mask blocking cylinders.
  • the tilting and blocking cylinders are fixed to the side carriages 7.
  • the upper masks are similarly tilted in the direction of the arrow B 'to protect the upper seals 3 and are locked in this position. Finally, the masks are separated and are pressed against the exchanger sheets which they maintain at the spacing by two jacks.
  • the plates 13 ′ as well as the motors 14 and the eight brushes 16 then tilt around the shaft 17, according to arrow C, thanks to a system of jacks similar to the system of jacks used for tilting the masks. Similarly, the plates 13 are locked in the working position, using jacks.
  • the brushes are therefore in the position shown on the Figures 1 and 3 and the masks are in the position shown in Figure 3.
  • a brush 16 rotating in the direction S rubs against the face 25 of a plate and the brush 16 'conjugate which is driven by the same motor turns in opposite direction S' while rubbing against the face 25 'of the next plate.
  • the brushes are brought into translation in the direction of arrow 7 (FIGS. 2 and 3) and go up to the top of the plates, thanks to the motor shaft II and the chain 12. The brushes come down to complete a complete cycle.
  • the cleaned plates are moved to the left and placed against the previous ones.
  • the masks are made of stainless steel sheet. Of course, they can be of any shape and only need to protect the seals, usually rubber, arranged around the openings between the plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP81400171A 1980-02-29 1981-02-04 Vorrichtung zur Reinigung von Plattenwärmetauschern Expired EP0035420B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81400171T ATE5101T1 (de) 1980-02-29 1981-02-04 Vorrichtung zur reinigung von plattenwaermetauschern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8004516A FR2477278A1 (fr) 1980-02-29 1980-02-29 Procede de nettoyage d'echangeurs a plaques et dispositif de mise en oeuvre du procede
FR8004516 1980-02-29

Publications (3)

Publication Number Publication Date
EP0035420A2 true EP0035420A2 (de) 1981-09-09
EP0035420A3 EP0035420A3 (en) 1982-04-14
EP0035420B1 EP0035420B1 (de) 1983-10-19

Family

ID=9239141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400171A Expired EP0035420B1 (de) 1980-02-29 1981-02-04 Vorrichtung zur Reinigung von Plattenwärmetauschern

Country Status (4)

Country Link
EP (1) EP0035420B1 (de)
AT (1) ATE5101T1 (de)
DE (1) DE3161199D1 (de)
FR (1) FR2477278A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672615A5 (de) * 1987-02-12 1989-12-15 Walter Baiker Dipl Ing
FR2977016B1 (fr) 2011-06-27 2013-07-26 Dcns Systeme d'energie thermique et procede pour le faire fonctionner
GB201503750D0 (en) 2012-08-14 2015-04-22 Powerdisc Dev Corp Ltd Fuel cells components, stacks and modular fuel cell systems

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88256C (de) *
US2200355A (en) * 1932-07-28 1940-05-14 Jensen Creamery Machinery Comp Heat exchange device
US3192997A (en) * 1961-08-29 1965-07-06 Combustion Eng Cleaning arrangement for rotary regenerative heat exchanger
FR2320146A1 (fr) * 1975-08-05 1977-03-04 Fassbind Walter Dispositif pour nettoyer des lamelles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88256C (de) *
US2200355A (en) * 1932-07-28 1940-05-14 Jensen Creamery Machinery Comp Heat exchange device
US3192997A (en) * 1961-08-29 1965-07-06 Combustion Eng Cleaning arrangement for rotary regenerative heat exchanger
FR2320146A1 (fr) * 1975-08-05 1977-03-04 Fassbind Walter Dispositif pour nettoyer des lamelles

Also Published As

Publication number Publication date
EP0035420B1 (de) 1983-10-19
FR2477278B3 (de) 1983-06-10
DE3161199D1 (en) 1983-11-24
EP0035420A3 (en) 1982-04-14
FR2477278A1 (fr) 1981-09-04
ATE5101T1 (de) 1983-11-15

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