FR2508157A1 - REMOVABLE CHICAN PARTITIONING DEVICE FOR WATER TUBE FLOW EXCHANGERS - Google Patents

Abstract

THE INVENTION RELATES TO A PARTITIONING DEVICE FOR THE WATER DISTRIBUTORS OF AN EXCHANGER WITH A CYLINDRICAL TUBE BED. THE REMOVABLE CHICANE 1 OF PARTICULAR CONFORMITY FITS DIRECTLY ON A WATER TUBE 5. THE UPPER PART FORMING THE SCREEN IS COATED WITH A SEAL 12 WHICH ENSURES THE WATERPROOFING AGAINST THE WALLS OF THE WATER DISTRIBUTOR RING 3 AND AGAINST LID. THE CHICANES DELIMINE BETWEEN SECTORS ISOLATED FROM ONE OF THE OTHER. APPLICATION TO HEAT EXCHANGERS FOR SEALED TYPE BOILERS WITH FORCED DRAFT.

Description

The invention relates to removable baffles making

  to the circulation of water in groundwater heat exchangers

  water tubes, especially for condensing boilers.

  Boiler exchangers of this type are usually made in the form of a cylindrical sheet of water tubes

  arranged around a central burner and wrapped in a co-

  watertight keel intended to collect combustion products

  which are evacuated by a chimney This provision allows

  puts a partial or total recovery of the latency heat

  condensation of the water vapor contained in the gases

  of combustion thanks to the important exchange surfaces

  views between the water tubes and these gases The water circulates in the

  the tubes of the water table by mounting in a bundle of tubes

  firing an upper splitter ring and then going down in another bundle of tubes to the lower splitter and so on, thanks to a game of baffles located in

rings.

  These baffles must obviously ensure a correct seal

  between the various sectors they delimit, which does not

  is not without problems in terms of manufacturing.

  The use of welds to fix these baffles on the

  In the case of distribution buckets, expensive machining operations are required and sealing must be ensured on the covers which cover these rings, for example by means of female parts or seals reported at the desired locations.

  on these covers Finally, leakage defects which

  could be detected in use at the level of

  canes can not be repaired easily without recovery in

  link. To avoid these disadvantages at the same time as reduced

  manufacturing costs, the applicant has developed a

  removable cane of particular conformation which fits

  in a tube of water, without the need for welding, and

  which is itself capped with a gasket for

be the lid '.

  The removable baffle according to the invention is generally

  neral in the form of a T whose vertical leg is introduced

  in the orifice of a tube of water and whose horizontal bar

  tale is the screen that seals with the walls

  of the distribution ring and with the lid, thanks to a coif-

  subject matter of which it is provided.

  Other special characteristics and advantages of

  will appear on reading the following description.

  of one embodiment with reference to the accompanying drawings.

which represent:

  Figure 1: a partial perspective view of the upper part of

of a heating body.

  FIG. 2: a perspective view of the cover fitting on this heating element FIGS. 3 and 4: a plan view in section of a baffle FIG. 5: a sectional view of a baffle introduced into a tube

  The exchanger shown in FIG. 1 consists of a web

  1 of water tubes 5 arranged around a central burner 6 and wrapped with a not shown waterproof shell intended to collect the products of combustion which are evacuated by a

  chimney The upper part of the combustion chamber and

  if delimited is closed by a central disk 2 forming a plug.

  The tubes 5 open into an upper distributor ring 3,

  a kind of circular "groove" whose upper part is obsti-

  trué by the cover 4 shown in Figure 2 The water must

  circulate in the tubes of the water table from a ring distributed

  lower titrator not shown analogous to the distributor 3, rising first in a few neighboring tubes to reach the upper distributor ring, and then going back down in a few

  other neighboring tubes and so on To encourage water to ef-

  to make these "" round trips "between the two rings, it is advisable to partition the distribution rings to delimit watertight sections forming a barrier to the passage of the water of a -3 -

sector to the neighboring sector.

  Removable baffles designated as a whole by the

  reference 1 provide this function and are maintained in

  They are in the form shown in FIGS. 3 and 4 and are in the form of a T whose vertical leg 10 is intended to be inserted into one of the tubes 5 which serves as its support The horizontal bar 11 of the T is profiled to correspond to the borders of the distribution ring, and topped with a seal 12 in IO rubber or analogous material cut to fit the

  edges of the circular "channel" forming the distribution ring

  This is how a side edge of the joint shows the

  shape of a point 13 intended to match the edge of the disc

  that central 2 A recess 14 is provided in the middle of the

  vertical leg-10, thereby enabling the

  of this leg in a tube 5 while the upper part which carries the seal and which forms the screen is

  in line with the flat 7 separating two neighboring tubes

  it appears more clearly in Figure 5 Thus placed the baffle 1 form barrier to the passage of water between the two

  tubes immediately insins that it isolates from one another.

  But for this the lower part of the vertical leg 10 must bear against the inner wall of the tube 5 It is for this purpose that are provided the two flanges 15 of the part

  lower part of this vertical leg 10, the edges of which the thickness

  corresponds to that of the tubes 5 These flanges are

  so that the chicane 1 introduced into its support

  found properly maintained without risk of vibration.

  When the cover 4 is applied above the distribution ring

  titeur, the grooves 8 with which it is supported rest against the

  upper part of the seal 12, promoting the seal and improving

  still maintaining the baffles * The figures

  four baffles delineating four sectors in the year

  dispatch 3, but it is obvious that we could use

  more baffles or less baffles without departing from the scope of the invention which also encompasses all other variants

not shown.

-4-

Claims (6)

claims   1 partitioning device for water tube web heat exchangers which open into lower and upper distribution rings closed by a lid characterized by the fact that it is provided by removable baffles (1) shaped in a particular manner to seal tightly the ring   and stay in position by interlocking directly with in a tube of water.   2 removable baffle according to claim 1 characterized by a T-shaped support whose vertical leg (10) introduced   in the orifice of a tube of water is provided with a system permitting   both its positioning, and the horizontal bar (11) constituting the screen seals with the walls of the distributor ring (3) and the cover (4) through a seal (12)   in flexible material which she is wearing.   3 removable baffle according to claim 2 characterized in that the positioning system of the vertical leg (10) in the orifice of a water tube is provided by flanges (15) of said vertical leg, the apaisseur corresponds at that of the water tubes.   4 removable baffle according to claim 2 characterized in that a recess (14), provided substantially in the middle of the vertical leg (10), positions the screen (11) above the flat (7) separating two tubes (5). ) neighbors that isolates one the other.   5 removable bicanane according to claim 2 characterized in that a side edge of the seal (12) shows the shape of   a tip (13) intended to fit the edge of the central disk tral (2).   6 Partition device with removable baffles according to the   claims 1 and 2, characterized in that the part   top of the baffle (1) is applied against grooves   (8) provided on the cover (4) of the distribution ring.