CN201212792Y

CN201212792Y - Cellular heat exchanger with pipe of different diameter

Info

Publication number: CN201212792Y
Application number: CNU2008201171021U
Authority: CN
Inventors: 邓昌沪
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-28
Filing date: 2008-05-28
Publication date: 2009-03-25
Anticipated expiration: 2018-05-28

Abstract

The utility model discloses a honeycomb heat exchanger of tapered pipes, which is composed of a vapor inlet, a vapor outlet, a flange, the tapered pipes and a container cylinder. The honeycomb exchanger has the maximum characteristic that the length of the heat exchanger can be shortened under the condition of keeping the same heat exchange area. After the length of the heat exchanger is shortened, the higher the frequency of medical liquor passing through a heater is, the higher the evaporation efficiency is, the more sufficient the heat exchange of condensed liquor is, the shorter the heating procedure is, and the larger the contact temperature difference between the condensed liquor and the heater is; the larger the contact temperature difference is, the larger the heat transfer coefficient is, and the higher the evaporation efficiency is. The increase of the evaporation efficiency can decrease the vapor consumption, can shorten the concentration time, and can improve the production efficiency.

Description

Reduced pipe honeycomb heat exchanger

Technical field

The present invention relates to a kind of heat enginnering technology, particularly reduced pipe honeycomb heat exchanger.

Technical background

Medium-height grass liquid medicine extract concentrated is one of master operation of herbal pharmaceutical, it is the maximum unit operations of herbal pharmaceutical power consumption, it also is herbal pharmaceutical pharmacy system important component part, the key equipment of upgrading unit is a heat exchanger, the performance of heat exchanger is directly connected to energy consumption efficiency, also can the composition activity of traditional Chinese medicine extraction be exerted an influence, about 1500 families of the existing Chinese medicine producer of China, a large amount of enrichment facilities is using.To these equipment, how to improve performance and improve energy consumption efficiency and be not only energy savings and also will play positive role for environmental protection.

The concentrated energy resource consumption of medium-height grass liquid medicine extract mainly is two aspects: the one, in the heater shell side, be used for the steam that heat dilute solution is consumed the evaporation of solution solvent; The 2nd, when the solvent steam of having vaporized is condensed into solvent liquid again in condenser needed cooling water.The former need supply with heat, and the latter needs to take away heat.Output big more (being that evaporation capacity is big more), the heat of supplying with is many more, required steam is just many more, the cooling water of required consumption simultaneously is also just many more, with reference to Fig. 6, can see according to being concentrated liquid movement arrow A13, high more by heater A1 frequency, evaporation efficiency will be high more, heater A1 area is big more, and the heat exchange that is concentrated liquid is just abundant more, and heating procedure is short more, be concentrated liquid and heater to contact the temperature difference just big more, can learn that from heat transfer principle the temperature difference is big more, heat transfer coefficient is big more, therefore, how to realize that the soup heating procedure is short, heat transfer area is greatly the effective way that improves heat transfer efficiency.

The heater of existing outer circulation concentration evaporator is that the employing pipe is a tubulation, vexed plate flange is welded at two ends, usually adopt 25 millimeters of calibers, tube pitch adopts 33 millimeters even distribution mode, and soup flows in pipe, and steam is heating outside pipe, 475 millimeters specifications of the heater barrel dliameter of this structure, can only the distribute tubulation of 25 millimeters of 160 calibers, 1 meter of the heat exchanger height of 475 millimeters specifications of barrel dliameter, its heat exchange area maximum only has 12.566m ², the circulation tangent plane of soup is long-pending to be 0.0785m ²

Summary of the invention

The present invention be directed to existing outer circulation enrichment facility employing pipe is tubulation, two ends are welded vexed plate flange arrangement tubulation density and are difficult to arrange high density, the circulation tangent plane that is difficult to improve soup is long-pending, for the circulation tangent plane that improves soup amasss, improve heat exchange area, improve the reduced pipe honeycomb heat exchanger of existing tubulation arrangement.

Realize that technical scheme of the present invention is: tubing is processed into the equilateral six square opening sections in two ends, axially the concordant adjacent edge that makes is close to welding side by side, make it be alveolate texture, weld container cartridge again in the periphery, flange again outside the tube two ends, the two ends of the inboard cylinder of flange are welded steam-gas inlet, steam (vapor) outlet again, after welding finishes, lead to crack and tube between the middle circle footpath section tube and tube of reduced pipe, constitute the vapor stream circulation passage with two end flanges, internal diameter isolating seal with reduced pipe, logical soup in the reduced pipe, reduced pipe, the logical steam in logical crack between the pipe of the middle circle segments between the tube and tube.Soup circulates at reduced pipe, steam circulates outside reduced pipe, because the gap of honeycomb, weld vexed plate flange than existing two ends, adopt 25 millimeters of calibers, tube pitch adopts 33 millimeters even distribution mode to compare, and the gap significantly reduces, and actual internal area is less under the same traffic state, fluid flow velocity in the chamber significantly increases, steam and reduced pipe are that heat-transfer pipe collision contact probability significantly increases, and the vapor stream of collision forms the little eddy current in more parts, and vapor stream is scratched under the effect at the dried of the little eddy current in part, constantly change flow direction and flowing velocity, form turbulent flow, constantly destroy down or the original laminar flow layer of attenuate, heat exchange is quickened dried the scratching of turbulent flow, thereby strengthened its heat-transfer effect greatly, after heat-transfer effect strengthened, the solvent evaporation rate of soup was accelerated, and concentration time shortened after the solvent evaporation rate of soup was accelerated, after concentration time shortens, production efficiency improves, and steam consumption reduces, and can also alleviate heat-sensitive materials contained in the Chinese herbal medicine after concentration time shortens and be subjected to heat damage.

Described reduced pipe can be the equilateral six side stage casing circles in two ends, also can the equilateral hexagon of the equilateral six side stage casing undergauges in two ends, and can also be the equilateral six side stage casing spiralitys in two ends.

Positive effect of the present invention is, identical volume heat exchanger can realize that specific area is big, and the heat exchanger volume of identical heat transfer area reduces, and as adopting 475 millimeters specifications of barrel dliameter, tubulation is a reduced pipe, the heat exchanger coupling 20m that caliber is 25 millimeters ²The single face heat exchange area, whole heat exchanger height only needs 1m, and adopting the prior art pipe is tubulation, and vexed plate flange is welded at two ends, and adopting caliber is tubulation for 25 millimeters, and tube pitch adopts 33 millimeters even distribution mode, and whole heat exchanger height needs 1.6m.As can be seen from Figure 6, shorten after the heat exchanger length, high more by the heater frequency, evaporation efficiency will be high more, the heat exchange that is concentrated liquid is just abundant more, and heating procedure is short more, be concentrated liquid and heater to contact the temperature difference just big more, the temperature difference is big more, heat transfer coefficient is big more, and heat transfer coefficient is big more, and evaporation efficiency is big more, not only can save steam consumption after evaporation efficiency increases and to shorten concentration time, enhance productivity.

Description of drawings

Fig. 1 is a reduced pipe honeycomb heat exchanger structure schematic diagram of the present invention;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the round-shaped schematic diagram in reduced pipe stage casing;

Fig. 3 A is the spiral-shaped schematic diagram in reduced pipe stage casing;

Fig. 3 B reduced pipe stage casing equilateral hexagon shape schematic diagram;

Fig. 4 is the vertical view of Fig. 3;

Fig. 4 A is the vertical view of Fig. 3 A;

Fig. 4 B is the vertical view of Fig. 3 B;

Fig. 5 is a reduced pipe Welding Structure schematic diagram;

Fig. 6 is the inspissator system schematic;

Among Fig. 1, steam-gas inlet 1, steam (vapor) outlet 2, flange 3, reduced pipe 4, soldered 5;

Among Fig. 2, steam-gas inlet 1, steam (vapor) outlet 2, flange 3, reduced pipe 4, tube 6;

Among Fig. 3, the equilateral six square opening sections 4-1 of reduced pipe 4, the middle circle segments 4-3 of reduced pipe 4;

Among Fig. 5, equilateral six square opening sections, 4-1 adjacent edge soldered 5 of reduced pipe 4; Logical crack between the adjacent middle circle segments 4-3 of reduced pipe 4;

Among Fig. 6, heater A1, evaporimeter A2, vacuum connection tube A3, vacuum pumping port A4, condenser A5, condensate collector A6, steam inlet A7, steam (vapor) outlet A8, condensation-water drain A9, condensed water import A10, concentrated solution outlet A11, condensate outlet A12, soup flow to arrow A13;

Specific embodiment

Further describe below in conjunction with accompanying drawing;

With reference to figure 1, Fig. 2, the equilateral six square opening sections 4-1 of reduced pipe 4 are axially axial greater than the middle circle segments 4-3 of reduced pipe 4, equilateral six square opening sections, 4-1 concordant adjacent edge that makes axially arranged side by side of reduced pipe 4 is close to welding, make it be alveolate texture, the weldering tube 6 again, tube welds flange 3 outside 6 two ends again, steam-gas inlet 1 is radially welded at the two ends of the inboard cylinder 6 of flange 3 again, steam (vapor) outlet 2, after welding finishes, logical crack and tube 6 between the middle circle segments 4-3 of reduced pipe 4, and constitute the vapor stream circulation passage between two end flanges 3, with the internal diameter isolating seal of reduced pipe 4, logical soup in reduced pipe 4 pipes, the logical steam in logical crack between the middle circle segments 4-3 of reduced pipe 4.Soup circulation in reduced pipe 4 pipes, steam circulates outside reduced pipe 4, because vexed plate flange is welded than existing two ends in the gap of honeycomb, adopt 25 millimeters of calibers, tube pitch adopts 33 millimeters even distribution mode phase ratio gap significantly to reduce, actual internal area is less under identical steam flow state, vapor stream flow velocity in the chamber significantly increases, steam and reduced pipe 4 are that heat-transfer pipe collision contact probability significantly increases, the vapor stream of collision forms the little eddy current in more parts, vapor stream is scratched under the effect at the dried of the little eddy current in part, constantly change flow direction and flowing velocity, form turbulent flow, constantly destroy down or the original laminar flow layer of attenuate dried the scratching of turbulent flow, heat exchange is quickened, thereby strengthened its heat-transfer effect greatly.

The present invention can also be used for the heat-exchanger rig of the evaporator-condenser of refrigeration unit, adopts the technology of the present invention side The evaporator-condenser of case manufacturing refrigeration unit not only can play energy-saving effect and can also save container material.

Claims

1, a kind of reduced pipe honeycomb heat exchanger is made up of steam-gas inlet (1), steam (vapor) outlet (2), flange (3), reduced pipe (4), tube (6) and is it is characterized in that the equilateral six square opening sections (4-1) in reduced pipe (4) two ends, middle circle segments (4-3).

2, also be by described a kind of its feature of reduced pipe honeycomb heat exchanger of claim 1: the equilateral six square opening sections (4-1) of reduced pipe (4) are axially axial greater than the middle circle segments (4-3) of reduced pipe (4).

3, also be by described a kind of its feature of reduced pipe honeycomb heat exchanger of claim 1: the middle circle segments of reduced pipe (4) also has spirality, equilateral hexagon.

4, also be by its feature of the described reduced pipe honeycomb of claim 1 heat exchanger: the equilateral six square opening sections (4-1) of reduced pipe (4) the concordant adjacent edge soldered (5) that makes axially arranged side by side.