Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
  • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
  • F28F2250/06—Derivation channels, e.g. bypass

Definitions

• the invention relates to a shell and tube heat exchanger with a container, an inflow space for the in the
• a control chamber assigned to the outflow end of the partial flow pipe with at least one arranged in the control chamber and operable from the outside
• Shell and tube heat exchanger is for compliance
• Partial flow pipe sealing In the outer end position of the rod, the hollow cylinder is pressed against the partition in the outflow chamber and in an axial direction
• Hollow cylinders with a cover plate have an annular cross-section on both sides.
• Heat exchange tubes is increased to a
• Hot gas flow takes part in the heat exchange.
• control element an axis perpendicular to the axis of the partial flow tube can be pivoted by means of a shaft guided radially outwards through the container jacket.
• control chamber and one in it
• control cylinder pivotally arranged control cylinder rotatable about its axis, arranged perpendicular to the axis of the partial flow pipe upstream of the connection, openings are provided in at least one head plate of the control chamber and the associated head plate of the control cylinder, which openings are rotated by rotating the control cylinder
• openings are provided in the outer surface of the control cylinder and in the outer surface of the control chamber, the openings in top plates or in the
• Shell surfaces are arranged at a predetermined angle to each other.
• control chamber and control element which is preferably suitable for lower gas temperatures
• at least part of the cooler heating surface current is directly in the control cylinder with the partial flow in
• Control device kept cold.
• the control cylinder is stored and sealed in the cylindrical control chamber by means of
• control chamber is surrounded by a cooling housing which also flows out of the exchange tubes Medium can be acted upon.
• connection opening is to improve the
• Cooling case emerging medium are provided.
• the heat exchanger can preferably be used, in which the
• Outflow space is connected to at least one outflow channel projecting into the outflow space, and in which in an extension of the partial flow pipe and in the
• Abströmkanal a control flap seated on a common shaft are provided, the control flap is cooled in the extension of the partial flow pipe via the common shaft and both control flaps are attached to the actuating shaft offset by a predetermined angle.
• the coolant is expediently supplied and possibly removed via the actuating shaft.
• control flap which is preferably designed as forced cooling, in the extension of the
• Partial flow pipe the flap can be acted upon by a hot partial flow.
• the extension of the partial flow pipe can be made in one piece with the pipe or as a separately manufactured pipe section.
• the outflow channel opens perpendicular to the first direction of stretching of the partial flow pipe.
• the shaft for actuating the control flaps consists of two detachable sections, it is also expedient that a pipe spiral is provided for bridging the coupling with respect to the coolant guide.
• FIG. 1 shows a partial section through a first embodiment of the heat exchanger
• FIG. 2 shows a section along the line II-II in FIG. 1,
• FIG. 3 shows a partial section through a second
• FIG. 4 shows a section along the line IV-IV in FIG. 3rd
• Partial flow tube 3 arranged.
• the tubes extend from a tube sheet, not shown and delimiting an inflow space, to a tube sheet 4.
• a cooling medium is introduced and removed into the space between the jacket 1 a and the two tube sheets.
• the partial flow pipe 3 with its inner insulation 3a is extended into the housing 6. With its free end, a cylindrical control chamber 8 extending perpendicular to the axis of the partial flow tube is fastened with an upper head plate 8a and a lower head plate 8b.
• a control cylinder 9 with an upper head plate 9a and a lower head plate 9b is arranged in the interior of the control chamber.
• the control chamber 8 has an expansion 8c at its upper end, at the expansion diameter of which the diameter of the upper head plate 9a of the
• Control cylinder is adapted such that the control cylinder can be supported on the control chamber with the interposition of a ceramic ring element 10.
• the diameter of the control cam 8 and Rege Izy li nder 9 is chosen so that a radial support of the control cylinder 9 is given in the control chamber by further ceramic ring elements 11 and 12.
• An opening 13 in the upper head plate 8a extends through an opening 13 connected to the head plate 9a
• Insulation 7 and the container part 1a to the outside.
• the partial flow pipe 3 and the control chamber 8 are connected to one another via an opening 15 and the medium flowing into the control chamber can be connected to one of the openings 15 opposite opening 16 from the control chamber
• an outflow funnel 17 which extends through an opening 6a in the end wall of the housing 6 and expands in the outflow direction of the medium, with an internal mixing cone 19 which is suspended via webs 18.
• an internal mixing cone 19 which is suspended via webs 18.
• Inflow openings 8e and 8f are provided.
• Control cylinder also three offset by 120 °
• Openings 23 can flow in to cool the outer surface of the control chamber 8. That flows out of the housing
• another partial flow A 2 is unregulated in the end face of the Outflow channels 26 provided in housing 6 and preferably directed towards the axis of tube 3 enter the outflow space.
• Opening 15 is closed by the jacket of the regulating cylinder 9.
• the opening 21 covers one
• Outflow funnel 17 can emerge.
• Partial flow B Due to this flow control of the flows, an intensive mixing takes place inside the regulating cylinder 9, which is supported by the funnel installation 17, 18, 19.
• Partial flow pipe 3 and the outflow funnel 17 enters part A 3 of the heating surface flow through the openings 23 and flows out again through the openings 24.
• the entire assembly can be installed and removed through a manhole 6b in the housing and an only sketched manhole 1b, 7a in the jacket.
• a lever 14a or a pneumatic or not shown electric drive provided to actuate the shaft 14.
• Head plates of the control chamber and control cylinder can be provided. It is only important that a forced control takes place between partial flow B and heating surface flow A, and that the hot partial flow is as fast as possible with the
• Heating surface current comes into contact, mixes and thus the control element itself is kept cold.
• annular housing 30 is arranged on the outflow side of the tube sheet 4, the interior of which limits the outflow space 31. From the front of the housing 30, two opposite outflow channels 32 and 33 extend into the
• the partial flow pipe 3 which is also provided with an inner insulation, extends in the center of the ring-like housing 30.
• a cooled circular-cylindrical control flap 34 is arranged in the front end of the extension of the partial flow tube 3, while one in each of the outflow channels 32 and 33 having a rectangular cross section
• control flap 35 and 36 rectangular uncooled control flap 35 and 36 is arranged.
• the control flaps 35 and 36 are shown rotated by 90 ° to simplify the illustration, i. H. she
• control valves 35 and 36 are welded to a cooled shaft 37, in which the control valve 34 is integrated.
• the shaft 37 is radially outward through the container jacket 1a
• coolant K flows through a first hollow shaft section 37a and from there enters a coupling 38 in the shaft bridging spiral 39. From this spiral tube 39, the coolant flows into a shaft section 37b and from there into a channel 34a of the control flap 34, which initially guides the coolant over the entire left half (in FIG. 3) of the control flap. The coolant then flows into a further pipe section 37c of the shaft 37 and is at the lower end of this pipe section into a further pipe concentrically arranged in the pipe section 37c
• the coolant then enters a pipe section 37f arranged in the section 37b, which together with the pipe section 37b defines an annular space for guiding the coolant downward. At its upper end there is an opening 37e from which the coolant can exit into the outflow space 25.
• This construction can be used when e.g. B.
• Winding 40a and within this a winding 40b returning to the free end of the extension is provided. Again, the coolant can come from the free end emerge from the return winding 40b and enter the outflow space via an annular space 41 provided around the free end of the partial flow tube. In this way, the seat of the control flap is particularly cooled. Furthermore, according to FIG. 3 a ceramic coating 42 is applied to the inside of the tube in order to achieve an abrasion-resistant valve seat.
• the entire force can be absorbed by this partial flow pipe by cooling the outside of the projecting partial flow pipe, i. H. the control device is essentially on the
• Product gas stream can be removed, must also
• Return line of the coolant from the double winding 40a / 40b may be provided.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6379322

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (4)

Citations (5)

• 1989
  • 1989-04-24 DE DE3913422A patent/DE3913422C3/de not_active Expired - Fee Related
• 1990
  • 1990-04-23 DE DE90906207T patent/DE59004367D1/de not_active Expired - Fee Related
  • 1990-04-23 WO PCT/EP1990/000652 patent/WO1990012993A1/de active IP Right Grant
  • 1990-04-23 EP EP90906207A patent/EP0494142B1/de not_active Expired - Lifetime

Patent Citations (5)

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