EP0096607B1 - Perfectionnements aux dispositifs pour séparer, des fluides qui les transportent, les corps nettoyants des échangeurs à tubes - Google Patents

Perfectionnements aux dispositifs pour séparer, des fluides qui les transportent, les corps nettoyants des échangeurs à tubes Download PDF

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Publication number
EP0096607B1
EP0096607B1 EP83401008A EP83401008A EP0096607B1 EP 0096607 B1 EP0096607 B1 EP 0096607B1 EP 83401008 A EP83401008 A EP 83401008A EP 83401008 A EP83401008 A EP 83401008A EP 0096607 B1 EP0096607 B1 EP 0096607B1
Authority
EP
European Patent Office
Prior art keywords
hopper
bridge
downstream
cleaning bodies
separator according
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
EP83401008A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0096607A1 (fr
Inventor
André Gérard Bizard
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.)
Technos et Cie
Original Assignee
Technos et Cie
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
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Application filed by Technos et Cie filed Critical Technos et Cie
Priority to AT83401008T priority Critical patent/ATE12141T1/de
Publication of EP0096607A1 publication Critical patent/EP0096607A1/fr
Application granted granted Critical
Publication of EP0096607B1 publication Critical patent/EP0096607B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C3/00—Sorting according to destination
    • 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 installations intended for exchanging heat between two fluids, installations comprising a tube exchanger, in particular of the condenser type, and in which the tubes are cleaned internally using solid bodies, generally spherical and elastic, entrained in these tubes by the fluid which circulates there.
  • devices used to separate the cleaning bodies from the fluid which transports them, at their outlet from the tubes, with a view in particular to their recycling towards the inlet of these tubes, devices comprising on the one hand two successive separator stages with a grid or the like mounted in a section of the outlet pipe of the exchanger and on the other hand a collector connected to the outlet of the second separator stage and arranged so as to receive the cleaning bodies separated from the main stream of the fluid and to evacuate them out of the pipe, this manifold being constituted in particular by the suction nozzle (or nozzles) of a recycling pump.
  • the two separator stages are intended to bring together the cleaning bodies in respectively two transverse directions X and Y, perpendicular to each other, of the pipe section considered, of axis Z.
  • the first of these stages, or upstream stage comprises at least one grid composed of equidistant parallel bars whose spacing is less than the smallest overall dimension of the cleaning bodies, this grid being mounted obliquely across the pipe section considered with its bars parallel to the plane containing the direction X and the axis Z of this section, so that the fluid crosses said grid but the cleaning bodies are stopped by it and are guided along its bars to its downstream end being deflected by them in direction X.
  • the second stage is in the general form of a relatively flat hopper converging downstream and in the direction Y, hopper mounted so as to receive the cleaning bodies coming from the downstream end of the first stage , the cross section of this hopper being elongated in the direction Y, at least one of its walls extending in this direction Y being permeable to the fluid, but not to the cleaning bodies, and at least one of its parallel walls in direction X constituting a deflector capable of deflecting the cleaning bodies, in direction Y, up to the downstream collector.
  • the permeable wall of the hopper which constitutes the second stage being able for example to be constituted by the downstream extension of a grid constituting the first stage, this extension can even be connected to the rest of the grid by a curved area without sharp angles.
  • impurities such as shells, wood debris, etc.
  • these impurities conveyed at the same time as the cleaning bodies by the grid of the first stage in the hopper of the second, can, under certain conditions, be applied against the permeable wall of this hopper and seal it.
  • This clogging reduces the flow rate of the fluid through said wall, which reduces the suction force of the cleaning bodies in the hopper in the direction of the collector.
  • the object of the invention is, above all, to propose other particularly effective and economical means for remedying the reported drawback of clogging of the permeable wall of the hopper.
  • the separation devices of the kind in question are essentially characterized in that they comprise a trigger guard extending, across the channel delimiting the stream of fluid charged with cleaning bodies, at a level comprised between the downstream regions of the two separator stages, these regions included, that is to say at the level of the entry of the above current into the hopper or a little upstream of this level or even inside the hopper, from 'a wall of said channel to the opposite wall in the direction X, but not in the direction Y, the downstream collector being arranged so that its upstream orifice opens facing one of the threads of the vortices created by the presence of said trigger guard on said current downstream of this trigger guard.
  • the invention includes, apart from these main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.
  • the separator is mounted across a pipe section 1 of axis Z in which the fluid leaving a tube heat exchanger circulates, fluid represented schematically by the arrows F.
  • This fluid carries with it cleaning bodies 2 preferably, but not necessarily, consisting of balls of elastic material whose diameter is slightly greater than that of the tubes to be cleaned.
  • the separator comprises two stages serving to collect the cleaning bodies 2 respectively in two transverse directions X and Y perpendicular to each other of the section 1 so as to separate them from the greater part of the flow of entraining fluid and pouring them into the upstream orifice of a manifold 3 outside the pipe, an orifice constituted in particular by the suction nozzle (s) of a recycling pump.
  • the first stage of the separator, or upstream stage comprises at least one grid 4 arranged obliquely with respect to the axis Z so as to allow itself to be traversed by the fluid F but not by the bodies 2.
  • This grid 4 is composed of parallel bars 5 equidistant whose mutual spacing is less than the largest overall dimension of the bodies 2.
  • the bodies 2 driven axially by the fluid F are deflected transversely by this grid in the direction X and are guided by their sliding along the bars 5 to the downstream end of this grid.
  • the second stage of the separator, or downstream stage, is constituted by a flat hopper 6 converging downstream and in the direction Y.
  • This hopper 6 is arranged and arranged so as to automatically receive the cleaning bodies delivered by the downstream end of the grid 4.
  • At least one of its walls 7 extending in this direction Y is permeable to the fluid F but not to the cleaning bodies 2; here the second wall 7 is formed by a part of the pipe section 1 itself.
  • At least one of the two walls 8 of the hopper 6, parallel to the direction X constitutes a solid deflector capable of deflecting the bodies 2 in the direction Y to the downstream end of the hopper: here is the case of the two walls 8.
  • a small bridge or trigger guard 9 connecting right through the facing walls of this hopper in the direction X, but not in the direction Y.
  • This bridge is therefore arranged across the main stream of fluid F tending to enter the hopper normally, which deflects a portion of this stream in the direction Y, but not in direction X.
  • This current is subjected to a violent vortex movement in said downstream portion, as visible at T in FIG. 4: no other possibility is in fact given for the circulation of said current inside said confined volume before the evacuation of the most of the carrier fluid F constituting this current through the permeable wall 7, that is to say perpendicular to the plane of the vortex (arrow G, FIG. 1).
  • the general shape of the vortex movement imparted to the flow of fluid loaded into the downstream volume of the hopper is that of two vortices symmetrical to each other with respect to the plane P defined above when, as is the preferred case , the trigger guard 7 is arranged in the middle of the width of the hopper in the direction Y and that this hopper is itself symmetrical with respect to the plane P.
  • an asymmetrical hopper such as that shown diagrammatically in FIG. 9: such an asymmetrical hopper can be deduced from the previous one by materializing the plane P above by a solid partition in the downstream part of the hopper, each half of this downstream portion then corresponding to said asymmetric hopper.
  • the trigger guard is adjacent not only to the two walls of the hopper parallel to the direction Y, but also to one of the walls of this hopper, parallel to the direction X.
  • the trigger guard generally consists of a piece of flat sheet metal possibly including a folded or curved portion, generally at its center.
  • the width of this trigger guard in direction X is that of the hopper.
  • the trigger guard can be fixed, in particular by welding, on the permeable wall 7 on which it projects perpendicularly: this is what has been illustrated in FIGS. 1 to 4.
  • the trigger guard is fixed to the pipe section 1: such a variant is visible in FIGS. 5 and 6, where the upstream orifice of the manifold 3 opens just downstream of the trigger guard 9; in this variant, the central portion 9 1 of the trigger guard has a semicircular section open downstream and constitutes the upstream section of the manifold 3.
  • the width of the trigger guard 9 in the direction Y is a fraction of the width L of the hopper in this direction at the trigger guard (see Figure 4).
  • This fraction is preferably between 0.3 and 0.4 and is more generally between 0.2 and 0.9: for values less than 0.2, the trigger guard would be too narrow and the vortices would only extend on a too small part of the volume of the hopper located downstream of this trigger guard; for values greater than 0.9, the flow rate of fluid loaded with cleaning bodies accessing said volume downstream of the hopper would be too small compared to the size of the vortices and the latter would lack vigor.
  • the width L is generally between 20 and 60 cm.
  • this distance h is advantageously between 0.5 1 and 2 I, an advantageous value being 1, 2
  • the bottom of this hopper preferably has itself a certain width, which gives it a trapezoidal shape and not triangular: this width j is generally between 0.5 1 and L, and preferably of the same order of magnitude as I; if it reaches the value L, the downstream portion of the hopper has a rectangular longitudinal section which is of little interest in itself, but, in operation, the two downstream corners of such a hopper are filled with cleaning bodies and / or impurities , which are not evacuated to the collector, and the surfaces of the piles of these bodies and impurities accumulated in these corners define an interior free volume of trapezoidal appearance having good extraction efficiency.
  • the permeable wall 7 can be constituted by a grid, this grid possibly being the downstream end of the grid 4 folded down for this purpose parallel to the axis Z.
  • said permeable wall is constituted by a perforated sheet having a relatively high void rate, for example equal to 50%.
  • FIGS. 7 and 8 differs from the previous ones in that the separator housed in the pipe section 1 is broken down into two elementary separators symmetrical to one another with respect to an axial plane parallel to the direction Y and in which the first stages gather the cleaning bodies, in the direction X, not towards the side wall of the section 1, but towards the axis of this section.
  • the hoppers constituting the second stages of these two separators are then merged into a single central hopper 6 whose walls 7, parallel to the direction Y, are both perforated.
  • this hopper is constituted by two elementary hoppers 6 1 , 6 2 (see FIG. 8) arranged side by side in the direction Y, connected respectively to two upstream sockets 3 1 , 3 2 of the collector 3: this construction makes it possible to considerably reduce the axial dimension of the hoppers.
  • FIGS. 10 and 11 schematically show a simplified variant of the split construction which has just been described with reference to FIGS. 7 and 8.
  • the hopper 6 is still in the center of the section 1, but it is broken down into more than two elementary hoppers juxtaposed side by side in the direction Y: in FIG. 11, the number of these elementary hoppers is equal to 4 , two dissymmetrical elementary half-hoppers of the kind illustrated in FIG. 9 being additionally provided at the two transverse ends of the series.
  • the various full upstream portions 11 of the hoppers and the various bridges 9 are constituted by a single and same U-shaped profile 14 with sharp edges open upstream and having a flat perforated bottom at 15.
  • the upstream section of the manifold 3 is also constituted by such a U-shaped section 16 open upstream, this upstream opening being partially closed by a succession of caps 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Filtration Of Liquid (AREA)
  • Centrifugal Separators (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP83401008A 1982-06-09 1983-05-20 Perfectionnements aux dispositifs pour séparer, des fluides qui les transportent, les corps nettoyants des échangeurs à tubes Expired EP0096607B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401008T ATE12141T1 (de) 1982-06-09 1983-05-20 Vorrichtung bei rohrwaermetauschern zum abtrennen der reinigungskoerper von ihren traegerfluida.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8210055A FR2528331A1 (fr) 1982-06-09 1982-06-09 Perfectionnements aux dispositifs pour separer, des fluides qui les transportent, les corps nettoyants des echangeurs a tubes
FR8210055 1982-06-09

Publications (2)

Publication Number Publication Date
EP0096607A1 EP0096607A1 (fr) 1983-12-21
EP0096607B1 true EP0096607B1 (fr) 1985-03-13

Family

ID=9274815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401008A Expired EP0096607B1 (fr) 1982-06-09 1983-05-20 Perfectionnements aux dispositifs pour séparer, des fluides qui les transportent, les corps nettoyants des échangeurs à tubes

Country Status (9)

Country Link
US (1) US4523634A (enrdf_load_stackoverflow)
EP (1) EP0096607B1 (enrdf_load_stackoverflow)
JP (1) JPS59131894A (enrdf_load_stackoverflow)
KR (1) KR890000151B1 (enrdf_load_stackoverflow)
AT (1) ATE12141T1 (enrdf_load_stackoverflow)
CA (1) CA1197792A (enrdf_load_stackoverflow)
DE (1) DE3360073D1 (enrdf_load_stackoverflow)
ES (1) ES8402518A1 (enrdf_load_stackoverflow)
FR (1) FR2528331A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406982C1 (de) * 1984-02-25 1985-08-01 Taprogge GmbH, 5802 Wetter Schleuse fuer Reinigungskoerper
DE3622396C2 (de) * 1986-07-03 1994-11-24 Taprogge Gmbh Vorrichtung zur Abscheidung von Reinigungskörpern aus einer Kühlflüssigkeit
US5010950A (en) * 1989-09-13 1991-04-30 Water Services Of America, Inc. Ball strainer for circulating ball cleaning system
US5473787A (en) * 1994-06-21 1995-12-12 Betz Laboratories, Inc. Method and apparatus for cleaning tubes of heat exchangers
FR2815548B1 (fr) * 2000-10-25 2003-08-15 Technos Et Cie Grille de separation pour separer des corps nettoyants d'un fluide et dispositif comprenant une telle grille
CN105229408B (zh) * 2013-05-22 2019-01-01 C.Q.M.有限公司 用于捉球筛管的阻挡元件
KR101687879B1 (ko) 2014-12-24 2016-12-19 두산중공업 주식회사 세정 볼 분리장치

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US386978A (en) * 1888-07-31 Heating-drum
GB190406128A (en) * 1904-03-12 1905-05-12 Archibald Fraser Burdh Improvements in or relating to Apparatus for Cooling, Heating and similar purposes.
US1378715A (en) * 1920-09-11 1921-05-17 Nielsen Harald Heat-exchange apparatus
GB1509204A (en) * 1974-11-14 1978-05-04 Leslie Co Self-cleaning heat exchanger circuit
DE2612905C3 (de) * 1976-03-26 1978-10-05 Ludwig Taprogge, Reinigungsanlagen Fuer Roehren-Waermeaustauscher, 4000 Duesseldorf Vorrichtung zum Abzweigen von Reinigungselementen
US4237962A (en) * 1978-08-11 1980-12-09 Vandenhoeck J Paul Self-cleaning heat exchanger
EP0009137B1 (de) * 1978-09-23 1982-06-09 Josef Koller Vorrichtung zum Abscheiden von abgeriebenen Reinigungskörpern
FR2438814A1 (fr) * 1978-10-11 1980-05-09 Technos Perfectionnements apportes au nettoyage d'echangeurs de chaleur a tubes
JPS55143399A (en) * 1979-04-23 1980-11-08 Hitachi Ltd Cleaner arresting device for tubular heat exchanger
DE2923659C2 (de) * 1979-06-11 1981-12-24 Josef Ing.(Grad.) 4006 Erkrath Koller Vorrichtung zum Abzweigen von Reinigungskörpern
US4350202A (en) * 1979-08-14 1982-09-21 Kleiber & Schulz, Inc. Extractor for recirculating cleaning bodies in a fluid-circulation system
US4351387A (en) * 1980-07-08 1982-09-28 Louis Milia Sieve assembly for cleaning bodies and heat exchanger system including same
US4366855A (en) * 1981-02-27 1983-01-04 Milpat Corporation Self-cleaning recuperator

Also Published As

Publication number Publication date
FR2528331B1 (enrdf_load_stackoverflow) 1985-01-11
DE3360073D1 (en) 1985-04-18
KR890000151B1 (ko) 1989-03-08
KR840005358A (ko) 1984-11-12
US4523634A (en) 1985-06-18
JPH0214633B2 (enrdf_load_stackoverflow) 1990-04-09
JPS59131894A (ja) 1984-07-28
ES522729A0 (es) 1984-03-01
ATE12141T1 (de) 1985-03-15
EP0096607A1 (fr) 1983-12-21
CA1197792A (en) 1985-12-10
ES8402518A1 (es) 1984-03-01
FR2528331A1 (fr) 1983-12-16

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