Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
  • F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits

Definitions

• This invention concerns of the tube heat exchanger for heat exchanging of liquids, gases and vapors.
• the high technological requirements and cost-consuming production of the feeding hollow plugs is the main disadvantage of this design.
• the inlet feeding hollow plug are furnished with gradually changed co-axial tube lugs, which must be dilatation resistant and tighten in circumferencial connection lines. From this reasons is difficult to get the most advantageous and minimum gaps between co-axial tubes of different diameters. In case of leakage of some co-axial circumferencial tube shoulder, one fluid can be contaminated with another one, without discovering this fact and the consecutive damages may be enormous.
• Leading tube of firs fluid is connected to the distributor of the firs fluid so it make possible flow of first fluid through both parts .
• Connection is arranged in intersection of the leading tube end of the first fluid through lower part of the firs fluid distributor.
• the upper part of the first fluid distributor is connected in intersection of outer part leading tube second fluid with this second fluid leading tube.
• the first fluid distributor is next to this connected with second fluid leading tube.
• second fluid leading tube connected with second fluid distributor, so that flow is possible through both parts.
• the connection is once again arranged in place of intersection second fluid leading tube end with second fluid distributor lover part.
• the upper part of the second fluid distributor body is connected with the outer part of the first fluid leading tube in place of its intersection through second fluid distributor.
• the lower or opposite end of the first fluid leading tube and the second end of the second fluid leading tube are connected in similar way as upper tubes end with first and second fluid distributors, as described above.
• the first fluid distributor is connected to the first fluid discharger and second fluid distributor is in this case connected to the second fluid feeder.
• the first and second fluid feeder and discharger and also the first and second fluid distributors has the tube diameter proportional to the diameters of individual tubes of the first and second fluid leading tubes, which are interconnected.
• the gap between first fluid tube and second fluid tube is defined by lugs in the gap distributed.
• the dilatation lugs are distributed in a circumferencial gap between first and second fluid leading tubes, in a few planes perpendicular to the axis of the mentioned tubes. On perimeter of this circumferencial gap are the distance lugs distributed roundwice on 120°.
• first and second fluid distributors Lover or opposite end of the first fluid leading tube and second end of the second fluid leading tube are connected with first and second fluid distributors, in mirrored way, but turned round an angle of 180° .
• the design of the heat exchanger make possible to arrange it as a group of co-axial tube bundles, with minimum gap between tubes of the first and second fluid and in the system are no critical spots with increased inner flow resistance of both media.
• the heat exchanger can be made of cooper, there exists minimum settlement of the minerals and the heat transfer coefficient will be almost ideal.
• the design can include arbitrary number of co-axial fluid leading tubes in form of bundles, without any troubles from the design point of view of fluid distributors and other parts. Further advantages is that the fluid leading coaxial tubes can be arranged side by side in few sets, and exploitation of the space is very high. Such arrangement ensures high exchange surface and great capacity while preserving small dimensions. After some design modifications can be heat exchanger exploatated for more than tree media in one bundle of co-axial leading tubes,
• Drwg. No. 1 is a longitudinal cross section of a said exchanger and Drwg. No. 2 is a partial view of the said exchanger in ground-plan and side view projection.
• the heat exchanger comprises of first fluid inlet section 1 being interconnected with distributors 3, 5, 7, 9, 11 of the first fluid.
• the distributors 3 5, 7, 9, 11 of the first fluid.
• I I of the first fluid 11 is interconnected to the first fluid leading pipe 21 , so that inner space of the first fluid distributor 11 and circumferential passages inner wall of the tube 21 and outer wall of the second fluid leading tube 22, ensures flow passages 31 of the first fluid.
• the first fluid distributor 3, 5, 7, 9 is interconnected with the first fluid leading tube 13, 15, 17, 19, ensures flow pass of the first fluid 23, 25, 27, 29.
• the termination of the of the inlet section 1 is ensured by means of technologically operable vent 35 of the first fluid.
• the second part of the tube type heat exchanger comprises of the second fluid discharger 2 interconnected with the second fluid distributor 4, 6, 8, 10, 12 .
• the second fluid distributor 12 is interconnected with the second fluid leading pipe 22 so that the second fluid distributor inner space 12 and the circumferencial passage between inner space of the second fluid pipe 22 and outer space of the first fluid leading pipe 19, to form flow passage of the second fluid 32.
• the second fluid distributor 4, 6, 8, 10 is interconnected with the second fluid leading tube 14, 16, 18, 20 to form fluid passages 24, 26, 28, 30 of the second fluid.
• the termination of the of the inlet section 2 is ensured by means of technologically operable vent 34 of the second fluid.
• the pipe of the smallest diameter forming the axis of the leading pipes is not-functional skeleton of said exchanger.
• the first fluid leading pipes 13, 15, 17, 19, 21 and second fluid pipes 14, 16, 18, 20, 22 are spaced apart by means of the dilatation lugs.
• the first and second fluid distributors are closed by the blinders 36.
• the invention also provides exchanging heat or could between two fluids, for example steam and process water. By means of special adaptation can be said exchanger exploatated for three or more fluids.
• inlet part 1 in some stage blinded and over this stage is ensured inlet of third fluid.
• first fluid inlet section 1 From the not depicted source of steam is steam fed into first fluid inlet section 1, by means of the first fluid distributors 3, 5, 7, 9, 11 is steam supplied into two coaxial arranged tube bundles 38 and than is passing the first fluid coaxial arranged tubes 13, 15, 17, 19, 21.
• the first fluid distributors 3, 5, 7, 9, 11 by this interconnection form flow passages 23, 25, 27, 29, 31 of the first fluid.
• This flow passage is formed so that first medium distributor 3, 5, 7, 9, 11 is in upper part, in intersection of the second fluid leading pipe 14, 16, 18, 20, 22 on this tube fastened on the total intersection perimeter, and in lower part is the first medium distributor 3,5,7,9,11 fastened on the total intersection perimeter on ends of the first medium leading tubes 13,15,17,19,21, so that steam can flow in this tubes downstream through circumferencial passages of the first medium tubes 23, 25, 27,29, 31.
• Utility water, heated by steam is fed by means of first fluid not depicted inlet section and not depicted second fluid distributor into could water source. Both sections are turned on 180° against second medium distributors 4,6,8,10,12 and being connected to the second fluid leading tubes 14,16,18,20,22, which forms fluid flow path 13,15,17,19,21 of utility water flowing During utility water flow upwards is said water heated from both walls by steam flowing in opposite direction.
• heated utility water in distributor 4,6,8,10,12 drained into second fluid discharger 2 and can be used as a hot utility water.
• the first and second distributors diameter is dependent on the first and second fluid leading tubes diameter. This diameter depends on first and second fluid leading tubes diameter and it is defined by ordering of said tubes in common tube bundle. Lowering of diameter response in fluid flow rate lowering.
• first and second medium interconnect two coaxial tubes bundles 38, the cutout of the first and second medium tubes through inner part of the first and second medium distributors in such way, that intersection of the annular part of the first and second medium flow channel, which is formed by insert first medium tube in second medium tube, is smaller, than intersection formed by intersection first and second medium tubes and perpendicular tube intersection plane, forming the first and second medium distributor.
• Deaeration device of the tube heat exchanger is made at the highest point of the first medium inlet tube 1 and second medium discharge tube 2, where is ensured technological opening 35 for first medium and technological opening 34 for second medium.
• deareation device arranged in the lowest part of the first medium inlet tube and second medium discharge tube. This technological openings of the first medium inlet tube and second medium discharge tube can be used as desliming and trapping device.
• first medium and second medium distributors 36 covers the concave bottoms, which make possible to increase heat exchanger operation pressure.
• the heat exchanger design allows to get high exchange efficiency during heat or cold transfer and its dimensions are small.
• coaxial medium leading tubes 38 are used, the heat exchange concentration between mediums can be insured.
• coaxial leading tubes 38 As an example of the coaxial leading tubes 38, forming main part of the exchanger is used bundle with ten (10) tubes.
• the heat exchanger output is define with number of the coaxial leading tubes 38 bundles, with number of the coaxial leading tubes 38 in one bundle and with its length.

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)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=5464987

Family Applications (1)

Country Status (3)

Citations (4)

• 1996
  • 1996-08-19 CZ CZ962450A patent/CZ245096A3/cs not_active IP Right Cessation
• 1997
  • 1997-06-20 AU AU30872/97A patent/AU3087297A/en not_active Abandoned
  • 1997-06-20 WO PCT/CZ1997/000022 patent/WO1998008042A1/en active Application Filing

Patent Citations (4)

Non-Patent Citations (1)

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