Abstract: A support bar for tubes in a heat exchanger, such as the U-bend tubes in the U-bend region of a recirculating, nuclear steam generator, provides positive restraint in both the in-plane direction of the tube planes and the out-of-plane direction. The bar has pairs of parallel surfaces aligned with first and second axes such that the bar may be positioned with either axis arranged parallel to the tube planes. The bar can be used in place of other types of tube support bars, and can also be used as an auxiliary bar for installation into a fully assembled heat exchanger to provide additional support to supplement other tube support arrangements.

Abstract: The present invention comprises a novel tube support system for a heat exchanger that serves to replace the baffles present in typical shell-and-tube heat exchangers. The shell-and-tube heat exchanger of the present invention employs helically coiled wires to form a support structure for the tubes contained within the heat exchanger shell. The elimination of baffles and the use of the coil support structure according to the present invention permits axial fluid flow for the shell side fluid and significantly minimizes fouling problems and tube damage resulting from flow-induced tube vibration.

Abstract: A heat exchanger has a shell formed of several sections placed side by side and each defining an intermediate baffle forming part of a spiral surface. The adjacent sections define together a spiral path extending through the shell in the direction of its axis. Tubes extend in this axial direction through aligned holes provided in each shell section. The tubes communicate between end spaces comprising an inlet and outlet for the first fluid. The use of shell sections provides a convenient construction method for the heat exchanger while the spiral path for the second fluid gives better flow characteristics.

Abstract: The device serves to suspend heating elements in the interior of a receptacle drum of a drier. The drier is provided with a rotary drive for the drum, and the heating elements exhibit a tubular conformation. The heating elements are guided in a support comprising a basic element and a clamping element positionable relative to the basic element. Both the basic element and the clamping element are provided with guidance recesses for the heating elements. The heating elements extend through the guidance recesses. The clamping element is arranged adjustable in a radial direction with respect to the longitudinal axis of the drum.

Abstract: A tube 101 is constituted by a pair of plates 111a, 111b which are fitted with each other in such a manner as to put an inner fin 101b between the plate 111a and the plate 111b. Differences in level 111c are formed on the second plate 111b, which fits inside, which differences in level each protrude inwardly by a distance equal to the thickness of the first plate 111a, whereby the outer wall surface of the tube 101 is made substantially level thereover. A gap which is formed between the outer wall surface of the tube 101 and a core plate, when the tube is passed through the core plate, can be as small as possible whereby the brazing properties can be improved.

Abstract: A support plate for retaining tube array spacing within a heat exchanger tube and shell structure. The support plate having a plurality of individual tube receiving apertures formed therein. Each apertures has at least three inwardly protruding members and bights are formed therebetween when the tube associated therewith is lodged in place to establish secondary fluid flow through the support plate. The inwardly protruding members terminate in flat lands that restrain but do not all contact the outer surface of the respective tube. These flat lands minimize fretting wear and eliminate potential gouging of the outer wall of the tube. The plate wall forming each aperture has an hourglass configuration which, inter alia, reduces pressure drop, turbulence and local deposition of magnetite and other particulates on the support plates.

Abstract: Improved plastic heat exchanger production systems are described. The production systems are arranged to extrude plastic tubing, cut the tubing into segments of desired length and convey the tubing to a plurality of aligned tube inserters. Clip strips are feed through the tube inserters which sequentially automatically insert tube segments into the clip strips. The clip strips are then cut at desired lengths to provide tubing panels of a desired size or sizes. In a preferred system, header pipes are attached to the respective ends of the cut tubing panels to provide completed heat exchanger panels. When desired, heat exchangers having laterally offset tubes may be created by cutting one or more middle clip strips into spacer segments and rotating the spacer segments to laterally offset at least some of the tubes. In another aspect of the invention, improved tube inserters suitable for inserting plastic tubing into a plastic clip strip are described.

Abstract: A cradle stake (28) for being inserted transversely into a lane (20) between first and second rows (16) of tubes (14) in a tube bundle (10), for damping movement of the tubes in the bundle, includes first and second elongated metal strips (30, 32), which are arranged with their inner sides (40) facing one another, and a plurality of compression springs (42, 44 and 46) extending between the inner sides and being attached to the metal strips. In one embodiment, the springs have progressively greater lengths so that the metal strips are tapered, one to the other. In one embodiment, each elongated metal strip has a V-shaped bend along its length so that the metal strips themselves are also resilient, and each of the elongated metal strips includes indentation saddles (52) on outer sides thereof for engaging the tubes.

Abstract: A novel individual support for a heat exchanger is disclosed which frictionally engages the outer surface of a tube-and-fin assembly and provides for interlocking of the supports. The novel support includes an alignment probe to facilitate installation and to prevent axial movement of the support.

Abstract: A motor vehicle heat exchanger has a bundle (10) formed solely from flexible tubes (12) made of plastics, as well as two end blocks (22, 24) joining these tubes. The heat exchanger further has at least one spacer (50) arranged at a chosen location between the end blocks (22, 24) and including apertures for the tubes to pass in order to provide support for the tubes (12) with a chosen spacing or pitch.

Abstract: A tube heat exchanger intended to be used for the production of carbon black, includes a cylindrical closed chamber having a plurality of tubes which extend through the entire, essentially cylindrically shaped chamber. Upper end of the tubes are attached to an upper end wall, preferably by welding, and hang down to a tube plate. The tube plate equipped with compensating devices to enable thermally induced expansions and contractions of the tubes to occur.

Abstract: A heat transfer device, particularly an exhaust gas heat transfer device, having a tube bundle made of rectangular tubes for guiding the gas. A jacket surrounds the tube bundle; is used for guiding the liquid coolant and is equipped with a coolant inlet 17 and a coolant outlet 18. The rectangular tubes of the tube bundle 10 are provided with outwardly directed projections 22 which determine the distance of adjacent rectangular tubes with respect to one another and to the interior wall of the jacket 11.

Abstract: A tube heat exchanger intended to be used for the production of carbon black, includes a cylindrical closed chamber having a plurality of tubes which extend through the entire, essentially cylindrically shaped chamber. Upper end of the tubes are attached to an upper end wall, preferably by welding, and hang down to a tube plate. The tube plate equipped with compensating devices to enable thermally induced expansions and contractions of the tubes to occur.

Abstract: A device for evaporating and/or superheating a medium, in particular a hydrocarbon or a hydrocarbon/water mixture for a gas generation system of a fuel-cell plant, includes a heat exchanger. The heat exchanger has, in its media-side region, at least one pair of films and in each case an inlet orifice and an outlet orifice which are connected in each case to a media space between the two films of the at least one pair of films. The media-side region is in thermally conductive contact with a region located on the heat transfer medium side. The media space is formed between the two films by depressions introduced on the medium-facing side of at least one of the films. The surface, facing away from the medium, in each case of at least one of the films of the at least one pair of films is provided with heat conducting ribs, the height of the heat conducting ribs being greater than the depth of the depressions.

Abstract: During the assembly of a steam generator, the boiler columns are assembled, and, in parallel, headers and other wall boxes are assembled on booms of the boiler columns, so that when the boiler columns are completed, the headers and wall boxes are also finally assembled. Next, the peripheral roof section is assembled onto the boiler columns, and the vertical steam generator-containing walls are suspended from the peripheral roof section. Parallel to this, the inner roof section is constructed and the convection heating surfaces are successively mounted to the inner roof section and lifted upward from the base. The assembled inner roof section and convection heating surfaces are then lifted to the height of the peripheral roof section, and the two parts of the roof are connected. Finally, the furnace walls having a vertical or inclined tube arrangement, including the furnace hopper, are assembled.

Abstract: A tube and shell heat exchanger having a transversely oriented inlet port and a spirally coiled heat transfer tube contained within an arcuate chamber created by an internal baffle in which the water to be conditioned travels along a helical pathway in which the flow has minimized water depth and high turbulence. The tube and shell heat exchanger maximizes heat transfer capability in a relatively easy to assemble design to make feasible the use of a higher cost material for the tubing such as titanium in a wide range of applications.

Abstract: The module is formed from two sheets welded to each other by laser welding. Longitudinal weld beads define between them longitudinal ducts for the flow of a first fluid. The sheets are also joined together by a peripheral weld bead. The weld bead defines, beyond the longitudinal ducts, a transition zone which narrows from the longitudinal ducts up to the gap. Weld spots are previously formed in this zone. Once the welds are completed, the module is formed by the injection of a fluid under pressure through a gap in the weld bead. Utilization for rendering mutually compatible the variations in width of the module during hydroforming in the end regions and for forming, with the transitions zone, a flow distributer to the various channels during operation.

Abstract: A cooling element for shaft furnaces provided with a refractory lining, particularly blast furnaces is made of copper or a low copper alloy and is provided with coolant ducts arranged in the interior of the element. The cooling element is composed of an extruded or rolled section which in the interior thereof has a plurality of cooling ducts which are round or have a shape which deviates from the circular shape. The cooling element is provided with lateral webs. The cooling element is equipped on the side facing away from the blast furnace wall in vertical direction with at least one continuous slag rib and the cooling element is equipped on the side facing the blast furnace wall with at least one fastening rib.

Abstract: For the sterilization of liquids (43) containing harmful microorganisms, or for the conditioning of mixtures of substances, a process and a heat exchanger (1) in the form of a tubular heat exchanger are used. The tube bundle (3) between the intake flange (2) and the outlet flange (4) is comprised of a number of tubes (18, 20) that are equal in length and that possess a narrow flow area and thin walls. These tubes, characterized as capillary tubes, are connected via distribution canals (15, 16) that are equal in length and similar in cross-section, to the central tube (12, 13) in the intake flange and in the outlet flange (2, 4). This causes the residence time distribution in the heat exchanger (1) to be held within very narrow limits, and causes the medium to be heated within fractions of a second to, for example, 140° C. or more, or less. This ensures a sterilization with the best possible preservation of thermolabile components, such as vitamins and proteins.

Abstract: In a device for placing a structural element in a cable installation conduit in order to sub-divide it, the structural element has a width close to the size of the internal perimeter of the conduit and comprises a plate surmounted by ribs. The device comprises a hot air inlet designed to soften the plate of the structural element; an external cylinder whose diameter is identical to that of the conduit, the cylinder comprising a shaping cone at one end in order to enable the softened structural element in order to gradually take a cylindrical shape; and an internal core fixedly held at a position located in the shaping cone of the external cylinder and positioned inside the softened structural element in order to give it a constant internal diameter when it is being shaped.

Abstract: A method of reducing vibration in a bank of tubes due to fluid crossflow, the tubes having substantially parallel longitudinal axes. The method includes the steps of selecting a plurality of tubes from the bank of tubes and interconnecting the selected tubes so as to restrain motion of the selected tubes relative to one another in at least one direction, transverse to the longitudinal axes of the tubes, while permitting each of the selected tubes to rotate on its longitudinal axis and expand and contract in a region adjacent to the interconnection. Also disclosed are various apparatus for reducing vibration in a bank of tubes due to fluid crossflow.

Abstract: An annular-shaped heat exchanger 2 provided with a high-temperature fluid passage inlet 11 at one end in the axial direction and a low-temperature fluid passage inlet 15 at the other end in the axial direction is supported inside a cylindrical outer casing 9 via a heat exchanger supporting ring 36. The heat exchanger supporting ring 36 connecting a low-temperature section near the low temperature fluid passage inlet 15 of the heat exchanger 2 and a rear flange 33 of the outer casing 9 is formed by bending a plate member in a cross-sectionally step shape so that it can readily undergo elastic deformation to offset the thermal expansion of the heat exchanger 2. This ensures positive sealing between the high-temperature fluid passage inlet 11 and the low-temperature fluid passage inlet 15 of the heat exchanger 2 while minimizing the thermal stress occurring in the heat exchanger 2 and the outer casing 9.

Abstract: A combined cycle system has a gas turbine for generating an exhaust gas stream and a heat recovery steam generator with a housing for defining a horizontal exhaust gas flow path for the exhaust gas stream. Positioned within the housing is a heat recovery assembly having vertical rows of horizontally oriented heat transfer tubes transverse to the direction of gas flow and spaced apart in the direction of the gas flow path. The heat transfer tubes are supported by a plurality of vertical support plate assemblies oriented parallel to the exhaust flow path. Each support plate assembly has a plurality of coplanar support plate segments, each support plate segment supporting less than three rows of heat transfer tubes.

Abstract: There is provided an arrangement for mounting the top end of a heat exchange module to and between a pair of opposed support frame surfaces, the arrangement including an elongate transverse beam and a pair of end mounting assemblies. The elongate transverse beam is securable to the top end of the heat exchange module with the longitudinal extent of the transverse beam oriented in the direction from one opposed support frame surface toward the other opposed support frame surface. One longitudinal end of the transverse beam has a left hand overextension portion extending longitudinally beyond the portion of the transverse beam immediately therebelow and the other longitudinal end of the transverse beam having a right hand overextension portion extending longitudinally beyond the portion of the transverse beam immediately therebelow.

Abstract: A steam generator tube support plate has passageways with inwardly extending lands. Two or more tubes extend through the passageways and are supported by the lands. The tube support plates are variably spaced to provide additional support near the tubesheet and in the distal bends of U-tube bundles. This design provides reduced clogging, pressure drops and tube vibrations.

Abstract: A method for manufacturing a ceramic shell-and-tube type heat exchanger having a plurality of heat transfer tubes and tubular plates joined to both the end portions of these heat transfer tubes which has the steps of inserting the heat transfer tubes of sintered tubular ceramics into through-holes of the tubular plates of unsintered plate-like ceramics having a plurality of the through-holes, standing the heat transfer tubes vertically to a floor surface, and then firing them in a condition where the tubular plates are positioned at both the upper and lower end portions of the heat transfer tubes, thereby integrally joining the tubular plates to both the end portions of the plurality of heat transfer tubes by the utilization of a difference between firing shrinkage ratios of both the members, the method having the steps of interposing at least one tubular plate between the tubular plate positioned at the upper end portions and the tubular plate positioned at the lower end portions of the heat transfer tubes,

Abstract: An air conditioner operating on a compressor-condenser-evaporator circuit utilizes water cooled by air flowing over an evaporative medium through which the water flows to cool a condenser coil located in a continuous serpentine channel in a sump member located at the lower side of the air conditioner unit. The condenser coils include offset intertwined upright coils that provide a large heat exchange surface with water flowing in the channel to a pump intake region of the sump. A pump is provided to supply the evaporative medium with water from the pump intake region of the sump for continuous circulation through the evaporative medium and the sump channel. A water distributor system supplies water uniformly to the top area of the evaporative medium by creating a film of water that is evenly distributed across the top of the evaporative medium.

Abstract: A lightweight apparatus designed to cool the EGR gas of an engine efficiently by replacing baffle plates with one or more support plates having a plurality of through holes, which is further made up of a barrel, end caps, a tube sheet, and a plurality of heat transmission tubes. An inlet and an outlet of the EGR gas are provided on the end caps covering both ends of the barrel and the sheet metal-made tube sheet attached to both ends of an inner wall of the barrel holds the properly arranged heat transmission tubes inserted into the through holes. Each metal sheet-made support plate affixed to a number of spots on the inner wall of the barrel has a diameter a little larger than the inside diameter of the barrel so that its edge is bent inward to fit inside the barrel tight but slidably in the form of tongue-like pieces. In a similar way, a peripheral edge of each through hole is curled up to create another set of tongue-like pieces to fit tight but slidably outside the heat transmission tubes.

Abstract: There is provided a combination for use in a shell and tube heat exchanger which comprises: a shell having a substantially horizontally extending longitudinal axis and an open end; an annular distributor adjacent to the shell end and having an annular chamber defined therein in fluid communication with the shell interior through the shell end; a tubesheet longitudinally spaced from the shell end; a baffle cage having an interior portion in the shell interior and an exterior portion outside the shell between the tubesheet and shell end, wherein the baffle cage is longitudinally spaced from and unconnected to the tubesheet; a bundle of tubes extending from the tubesheet and through the baffle cage and shell interior; and a support member having a lower end fixedly connected to the interior surface of the annular distributor and an upper end contacting but not connected to the exterior portion of the baffle cage at a lowermost location thereof.

Abstract: The heat exchanger comprises at least one first sheet tubes and at least one second sheet of tubes, the sheets being suspended in a case. The two sheets are juxtaposed in a vertical plane, the first sheet of tubes connecting a first inlet fluid manifold disposed at the bottom and on one side of a case to an outlet manifold disposed in a central top portion of the case, and the second sheet of tubes connecting a second inlet fluid manifold disposed at the bottom and on one side of the case to the outlet manifold. Each sheet comprises first tubes which extend horizontally in the bottom portion of the case, second tubes which are connected to the first tubes and which extend vertically between the bottom portion of the case and the middle portion of the case, and bent third tubes which are connected to the second tubes and which extend between the middle portion of the case and the top portion of the case. This configuration makes it possible to obtain a large heat exchange area with a compact heat exchanger.

Abstract: A cooler includes a stationary side plate, a plurality of cooling pipes, a housing and an inlet and outlet cap. The cooling pipes are contained winding around in the housing, with one ends connected with the side plate closed up with the inlet and outlet cap to let A cover is fixed on an upper wall of the housing near the side plate and a hole provided in the upper wall to let hot oil coming from an oil tube fixed in the side plate to flow in the housing to move up and down along separating plates provided vertically in such a way to form an up-and-down passageway for hot oil to be cooled down and flow out of an oil exit in the bottom of the housing.

Abstract: A heat exchange unit for an air conditioning/refrigeration system includes a plurality of independent spiral coils carrying hot refrigerant. Water is sprayed onto an upper set of the coils and passes through a bank of surface media onto a lower set of coils and then into a sump where it is recirculated. Water is also sprayed onto the lower coils. Air flows upwardly though the unit and cools the downwardly moving water droplets. Although most of the cooling in the unit is from evaporation, an unusual feature is the almost complete lack of scale buildup. The unit is almost completely dark inside so algae doesn't grow. Periodic high water temperatures and periodic purging of the recirculated water minimizes fungi growth. The coils are supported in such a manner that the tubes are allowed to lengthen and expand radially when temperatures are high and shrink when temperatures are low.

Abstract: Apparatus for attenuating vibration of a tube includes a cable disposed in the tube and spaced-apart attenuating assemblies mounted on the cable for frictionally engaging the wall of the tube in order to damp vibration of the tube. The assemblies also add rigidity to the tube in order to stabilize the tube against vibration. Each attenuating assembly comprises two spaced-apart end fittings mounted on the cable. A heat vaporizable insert is interposed between the end fittings for maintaining the end fittings in their spaced-apart relationship until the insert vaporizes. A preloaded coiled spring, which interconnects the end fittings and surrounds the insert, biases the end fittings towards each other after the insert vaporizes. A tubular, flexible and braided sheath, which is interposed between the end fittings, surrounds the spring and has respective ends thereof attached to the end fittings. When the insert vaporizes, the spring biases the end fittings closer together, thereby axially shortening the sheath.

Abstract: Segmented stayrod for restricting transverse displacement of a nuclear heat exchanger tube support plate. The stayrod includes a first rod segment interposed between the tubesheet and the first support plate, the first rod segment having an externally threaded riser extending through the hole formed in the first support plate. The stayrod also has a second rod segment interposed between the first support plate and the second support plate, the second rod segment having an internally threaded end portion for threadably engaging the threaded riser of the first rod segment. The second rod segment also has an externally threaded riser extending through the hole formed in the second support plate. An internally threaded fastener threadably engages the riser of the second rod segment for fastening the second rod segment to the second support plate. In this manner, the first support plate is captured between the first rod segment and the second rod segment.

Abstract: The present invention relates to a rack for holding a set of tubes, in particular for forming a heat exchanger, each of the tubes making up the set being provided with a helical outer fin, and said tubes being disposed in n rows of p tubes, the rack including transverse holding section members disposed between each row and longitudinal holding lugs engaged in gaps between the turns of the fins on the corresponding tubes. Bars that are perpendicular to said transverse holding section members separate the p adjacent tubes in each of the n rows, the transverse holding section members being threaded through n-1 orifices provided in the bars, said bars and said section members forming a holding mesh. The longitudinal holding lugs are constituted by separate brackets, each of which includes an engageable lug and at least one fastening tab for fastening it to said mesh.

Abstract: A heat exchanger, in particular for a nuclear reactor steam generator, comprising a U-tube bundle and a stabilizing system composed of anti-vibration bars inserted between the tubes of the bundle in the upper tube U-bend region. The anti-vibration bars have portions that protrude from the tube bend region, and the stabilizing system comprises elements which connect the aligned portions of the ends of the anti-vibration bars and are composed of a comb with slots designed to receive the ends of the anti-vibration bars, and a comb cover attached with fastening means. All the connecting elements are attached to supports that are joined to the bundle wrapper, while allowing limited movement of the set of anti-vibration bars and connecting elements.

Abstract: A low-temperature carbonization drum for waste includes many heating tubes located in the interior. The tubes are each secured by one end to a first end plate and by the other end to a second end plate. At least one support location for supporting the heating tubes is provided between the two end plates to prevent them from sagging. Each support location is divided into at least two spaced-apart partial supports, each with one bracket configuration. Each bracket configuration includes a plurality of support brackets that are located in the same plane as one another. The support brackets are located one after another (are staggered) and are rotationally offset from one another. As a result, the solid material in the waste can be transported largely unimpeded past the support locations.

Abstract: A method and apparatus for separately supporting and sealing a heat pipe within a heat exchanger. For support, the heat pipe with fins thereon passes through a support grid which consists of a series of rings secured or interconnected together. The fins of the heat pipe rest upon these rings of the support grid thereby supporting this region of the heat pipe. To seal these heat pipes in order to prevent any gas escape from the heat exchanger, a tubesheet with openings therein is placed over the ends of the heat pipe. These openings are oversized thus a considerable gap exists between the tubesheet and the heat pipe. This gap is covered or sealed by use of a cover disk which tightly fits around the heat pipe and spans across this gap before it is removably secured to the tubesheet. By this fashion, once the cover disk is removed from the tubesheet, it is a relatively easy task to then remove the tubesheet and the heat pipe from the heat exchanger for maintenance or repair purposes.

Abstract: An improved rod baffle heat exchangers is disclosed in which the tube bundle comprises a plurality of tubes supported intermediate therein by at least one outer ring and a plurality of baffle rods extending along diagonal lanes between the tubes.

Abstract: Anti-vibration spacer elements are located between adjacent elongated heat exchanger tubes for operation at temperatures above ambient in a tubular type heat exchanger. The spacer elements are formed of metal alloys having a shape-memory characteristic and are placed between adjacent rows of elongated tubes in the heat exchanger, such as a steam generator or feed water heater, and are supported from a girth ring in the casing of the heat exchanger. When the heat exchanger operating temperature is increased above a transition temperature (TT) for the spacer metal, such as a temperature between -100.degree. F. and 1000.degree. F., the spacer element increases in its overall effective thickness dimension so as to provide a lateral loading force against the adjacent tube pairs, and thereby dampen and prevent undesired vibrations of the elongated tubes. The invention also provides a method for providing vibration dampening for elongated tubes in heat exchangers operating at -100.degree. to 1000.degree. F.

Abstract: A rod baffle heat exchanger utilizing an improved rod baffle is disclosed. The improved rod baffle has a baffle ring and support member comprised of a first strip and a second strip each attached to the ring and extending across said ring such that each strip will support an adjacent tube row. Struts are attached to and extend between the first and second strip. The improved rod baffle provides for a reduced longitudinal-flow, shell-side pressure drop over a solid support member.

Abstract: A waterwall heat transfer system has a tube block secured to a tube assembly. The tube assembly includes a plurality of parallel tubes connected together by a membrane. The tube block has a base section and a plurality of spaced ridges extending upward from the base section, the upper surface of at least one of the spaced ridges defining a generally horizontal surface. The ridges are spaced to define channels therebetween with the height of at least one of the ridges selected to provide a seat for the membrane of the assembly.

Abstract: A condenser made of concrete for an axial exhaust turbine, the condenser being carried on a concrete raft and including a plurality of superposed bundles of heat exchange tubes, wherein the condenser includes end vertical tube plates connected via flexible seals to the walls of the condenser and intermediate vertical tube plates, said tube plates being secured to one another by ties and supporting the tubes of the bundles so that they are free to expand, the intermediate plates adjacent to the end plates being carried by internal steel support brackets that are fixed to the walls of the condenser. The bundles of heat exchanger tubes are easily mounted and maintenance thereof is facilitated.

Abstract: An element (18) of elongate form is fastened onto the tube support plate (8a) of the steam generator nearest the bent parts (10c, 10"c, 10'"c) of the tubes (10) of the bundle, in a central free zone of the bundle, in line with the small bends (10"c) of the tubes of the bundle. Anti-vibration bars (15) of a set of bars which are intended to be placed between any two adjacent rows (20) of the bundle of tubes are fastened by their internal end onto a dovetail piece (16) which is attached to the elongate element (18). All the anti-vibration bars (15) intended to come into a space contained between two successive rows (20) of the bundle of the heat exchanger are thus fitted in a single operation. The invention applies in particular to steam generators of pressurized water nuclear reactors.

Abstract: A tube alignment strap for maintaining alignment and spacing between adjacent tubes in a superheater. A U-shaped strap receives a first tube in the U-shape of the strap. The open end of the strap is rigidly attached to pads provided on a second adjacent tube. A semi-circular collar has a bore at each end sized to receive the straight portions of the U-shaped strap such that the semi-circular collar is slidable over the U-shaped strap so as to be adjacent the first tube. The semi-circular collar is rigidly attached to the U-shaped strap.

Abstract: The blocking device includes sets of antivibration bars (25, 25') interposed between layers of tubes (24) of the bundle of the steam generator, in the upper part of the bundle, termed the tube bend region. The antivibration bars (25, 25') include parts (25b, 25'b) which project with respect to the tube bend region, and the blocking device includes a linkage of the end parts of the antivibration bars, which include aligned openings. The linkage includes a screw (21) whose head (21a) bears on a first antivibration bar (25) and whose threaded rod (21b) is screwed into a spacer (22). The spacer (22) is fixed either in a second spacer or in a tapped fastening element (23), by a threaded part (22b). The threaded parts (21b) of the screw and (22b) of the spacer pass through the antivibration bars (25, 25') through aligned openings.

Abstract: A housing is provided for an air conditioning condenser of the type providing a fan creating an upward path of air movement through the housing, a heat exchange coil having and inlet and an outlet for connection to a source of hot refrigerant in a refrigerant loop and means for spraying water on the coil. The housing is made of rotomolded plastic and comprises a base, a plurality of identical walls and a top. The base and top are rotocast as a single piece and then cut horizontally with a saw to provide the two pieces. The base includes a U-shaped foot arranged to receive fork lift tines and oriented so the fork lift does not damage the inlet and outlet to the heat exchange coils.

Abstract: A device for radially holding the envelope of a tube bundle and spacer plates of a steam generator, constituted by abutments traversing the wall of the bundle envelope and fixed to the wall level with the spacer plates. The said abutments being distributed on the periphery of each spacer plate in order to radially separate the bundle envelope from the pressure envelope of the steam generator. Each abutment comprises a first part (37) fixed to the bundle envelope (6) and contacted with the inner face of the pressure envelope (1), as well as a second part (32) exerting rigid holding stress on the spacer plate.

Abstract: The invention relates to a device for the radial holding or supporting of the envelope of a bundle of tubes and spacer plates of a steam generator or boiler, constituted by stops or abutments traversing the wall of the bundle envelope and fixed to the wall level with the spacer plates. The abutments are distributed over the periphery of each spacer plate in order to radially separate the bundle envelope from the pressure envelope of the steam generator and to exert rigid supporting stresses between the spacer plates and the bundle envelope. The abutments are adapted for sliding on the inner face of the pressure envelope. Each abutment is constituted by a first part which comes into contact with the inner face of the pressure envelope, a second part and a third part coming into contact with the spacer plate. The second part serving as the intermediary between the first and third parts. The first part has a first thread permitting its fixing by screwing to the bundle envelope and a second thread.

Abstract: It is used to reheat a secondary fluid such as pool water or sea water. It comprises a body provided with an inlet for the secondary fluid to be reheated and an outlet for the reheated fluid, a sleeve inside the body, a coil in which the primary fluid circulates and which is housed inside the annular space between the body and the sleeve and outside of which the water to be reheated passes. The body (1) and the sleeve (8) are made of a plastic-based material, either reinforced or not, and the coil (10) is made of titanium.