Three plume lamella heat exchangers with temperature compensation plates
Technical field
The utility model belongs to the heat transfer technology field, relates to a kind of lamella heat exchanger, particularly a kind of three plume lamella heat exchangers with temperature compensation plates.
Background technology
In existing technology, that lamella heat exchanger integrates is board-like, the advantage of shell-and-tube heat exchanger.It has that heat transfer efficiency height, terminal temperature difference are little, high temperature high voltage resistant, densification and the advantage such as lightweight, has been widely used in chemical fertilizer plant, the oil plant refining plant, and gas fractionation unit and ethylene unit etc. are big-and-middle-sized, in the mesohigh heat transmission equipment.
Conventional lamella heat exchanger only can be realized two plume heat exchange, and a lot of occasions all are multiple flows in LNG industry, space division technique and methanol technics.The multiple flow wrap-round tubular heat exchanger is widely applied under these occasions.Wrap-round tubular heat exchanger belongs to the shell-and-tube heat exchanger type, has the advantage of shell-and-tube heat exchanger, and the shortcomings such as volume is large, Heavy Weight are also arranged.Lamella heat exchanger will substitute wrap-round tubular heat exchanger, how to realize that multiple flow is a problem that needs consideration.
Simultaneously, lamella heat exchanger heat exchange plate and end plate normally welding manner are connected, because end plate and heat exchange plate thickness differ greatly, the thermal strain that the temperature difference is brought will be inharmonious, the commissure produces easily larger stress and concentrates, produce easily stress rupture and stress fatigue, reduced the life and reliability of product.This problem is also perplexing the deep popularization of lamella heat exchanger.
Two conventional plume lamella heat exchangers comprise that cylinder shell 1, plate core group 2, baffle 3, plate side-entrance ozzle 4, plate side outlet ozzle 5, shell side inlet nipple 6, shell side outlet ozzle 7, pressure strip 8, flange face 9, shell flange face 10 consist of as shown in Figure 1.Form plate core group 2 by welding between the plate 11, be connected by laser weld between plate core group 2 and the pressure strip 8.Flange face 9 and shell flange face 10 are connected by bolt by screwed hole 12.Wall at cylinder shell 1 has shell side import and shell side outlet, is provided with the import of plate journey and the outlet of plate journey at flange face 9.Each plate consists of 11 of two right plates of plate and forms plate journey runner being welded along excircle by two plates 11.At every plate 11 circular medium import and media outlet are arranged, plate is to medium import and the welding of media outlet inner periphery along plate 11, and plate is to a formation shell side runner.
The utility model content
The purpose of this utility model is to overcome the defective that exists in the prior art, designs a kind of three plume lamella heat exchangers with temperature compensation plates, and this heat exchanger can reduce volume and reduce weight.
To achieve these goals, the technical solution of the utility model is a kind of three plume lamella heat exchangers with temperature compensation plates of design, comprises left collocation structure, right collocation structure, left plate core group, housing, dividing plate, right panel label group, left flange face, right flange face;
Wherein, described left collocation structure mainly is comprised of two left compensating plates, described right collocation structure mainly is comprised of two right compensating plates, the cross section of described left compensating plate and right compensating plate is the convex ridge structure, the convex ridge that the outer circumference surface of described two left compensating plates was welded to connect and made two left compensating plates was welded to connect and made two right compensating plates against, the outer circumference surface of described two right compensating plates convex ridge against;
Described left plate core group is identical with the structure of right panel label group, and the external diameter of described left plate core group and right panel label group is less than the internal diameter of housing;
Symmetry has two through holes in the outer circumference surface centre position of described housing, and these two through holes are respectively shell-side fluid import and shell fluid outlet;
Have the outlet of the first fluid streams and the first fluid streams entrance at the end face of described left flange face, have the second fluid streams at the end face of described right flange face and export and the second fluid streams entrance;
Its annexation is: described left collocation structure is located between left flange face and the left plate core group, two through holes in described left collocation structure left side respectively with the outlet of the first fluid streams and the perforation of the first fluid streams entrance of left flange face, two through holes in described left collocation structure right side connect with the fluid issuing of left plate core group and fluid intake respectively, form left heat exchanger components by left flange face, left collocation structure and left plate core group; Described right collocation structure is located between right flange face and the right panel label group, two through holes in described right collocation structure right side respectively with the outlet of the second fluid streams of right flange face and the perforation of the second fluid streams entrance, two through holes in described right collocation structure left side connect with fluid issuing and the fluid intake of right panel label group respectively, form right heat exchanger components by right flange face, right compensating plate structure and right panel label group; Described left heat exchanger components and right heat exchanger components are installed in respectively the two ends, the left and right sides of described housing, between the right panel label group of the left plate core group of described left heat exchanger components and right heat exchanger components dividing plate are installed; Described first strand of heat transferring medium enters left heat exchanger components from the first fluid streams outlet outflow of left flange face by the first fluid streams entrance of left flange face; Described second strand of heat transferring medium enters right heat exchanger components from the second fluid streams outlet outflow of right flange face by the second fluid streams entrance of right flange face; Described the 3rd strand of heat transferring medium entered in the cavity between housing and left heat exchanger components, the right heat exchanger components by the shell-side fluid import of housing and flowed out by the shell fluid outlet of housing.
Also comprise two baffles, described two baffles are installed between described housing and left heat exchanger components, the right heat exchanger components in the cavity and left-right symmetry.
The plate of described left plate core group and right panel label group is the ripple type structure.
The thickness of described plate is 0.6mm~1.0mm.
The thickness of described left flange face and right flange face is 15mm~20mm.
The utility model is achieved in that the utility model improves the lamella heat exchanger of routine, has proposed to realize the lamella heat exchanger of three plume heat exchange.Left and right sides plate core group fixedly forms a whole by left and right sides flange face, uses dividing plate between the plate core group of the left and right sides.Left and right sides plate core group is placed in the middle of the housing.Left plate core group has plate side the first fluid streams entrance and the outlet of the first fluid streams.Right panel label group has plate side the second fluid streams entrance and the outlet of the second fluid streams.The outlet of shell-side fluid import and shell fluid is arranged on the housing.Collocation structure is between left and right sides plate core group and left and right sides flange face.
Advantage of the present utility model and beneficial effect are: two groups of plate cores of the utility model share a housing, can realize three plume heat exchange, plate side two plumes, shell-side one plume at a heat exchanger.Be installed between described housing and left heat exchanger components, the right heat exchanger components in the cavity and left-right symmetry owing to also comprise two baffles, described two baffles, when preventing the fluid short circuit, can improve the heat exchange efficiency of the 3rd strand of heat transferring medium.Because the plate of described left plate core group and right panel label group is the ripple type structure, can improve the heat exchange efficiency of heat transferring medium.Because the cross section of the compensating plate of described left collocation structure and right collocation structure is the convex ridge structure, such structure has played the effect of relieve stresses.
Description of drawings
Fig. 1 is conventional lamella heat exchanger;
Fig. 2 is the utility model structural representation;
Fig. 3 is the utility model structure cutaway view;
Fig. 4 is the used heat exchange plate of the utility model;
Fig. 5 is the utility model heat exchange plate structure chart;
Fig. 6 is the utility model compensating plate structure chart;
Fig. 7 is the utility model thermal compensation sheet structure figure;
Fig. 8 is the utility model thermal compensation plate connected mode schematic diagram;
Fig. 9 is an application example of the present utility model.
Wherein, 1-cylinder shell; 2-plate core group; The 3-baffle; 4-plate side-entrance ozzle; 5-plate side outlet ozzle; 6-shell side inlet nipple; 7-shell side outlet ozzle; The 8-pressure strip; The 9-flange face; 10-shell flange face; The 11-plate; The 12-screwed hole; The outlet of 13-the first fluid streams; The left compensating plate of 14-; The left plate core of 15-group; The 16-housing; The 17-dividing plate; 18-right panel label group; The import of 19-shell-side fluid; The outlet of 20-the second fluid streams; The right flange face of 21-; 22-the second fluid streams entrance; The outlet of 23-shell fluid; 24-the first fluid streams entrance; The left flange face of 25-; The right compensating plate of 26-.
The specific embodiment
Below in conjunction with drawings and Examples the specific embodiment of the present utility model is further described, following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
Extremely shown in Figure 9 such as Fig. 2, the technical scheme of the utility model implementation is: a kind of three plume lamella heat exchangers with temperature compensation plates is characterized in that: comprise left collocation structure, right collocation structure, left plate core group 15, housing 16, dividing plate 17, right panel label group 18, left flange face 25, right flange face 21;
Wherein, described left collocation structure mainly is comprised of two left compensating plates 14, described right collocation structure mainly is comprised of two right compensating plates 26, the cross section of described left compensating plate 14 and right compensating plate 26 is the convex ridge structure, the convex ridge that the outer circumference surface of described two left compensating plates 14 was welded to connect and made two left compensating plates 14 was welded to connect and made two right compensating plates 26 against, the outer circumference surface of described two right compensating plates 26 convex ridge against;
Described left plate core group 15 is identical with the structure of right panel label group 18, and the external diameter of described left plate core group 15 and right panel label group 18 is less than the internal diameter of housing 16;
Symmetry has two through holes in the outer circumference surface centre position of described housing 16, and these two through holes are respectively shell-side fluid import 19 and shell fluid outlet 23;
Have the first fluid streams outlet the 13 and first fluid streams entrance 24 at the end face of described left flange face 25, have the second fluid streams outlet the 20 and second fluid streams entrance 22 at the end face of described right flange face 21;
Its annexation is: described left collocation structure is located between left flange face 25 and the left plate core group 15, two through holes in described left collocation structure left side connect with the first fluid streams outlet 13 and first fluid streams entrance 24 of left flange face 25 respectively, two through holes in described left collocation structure right side connect with the fluid issuing of left plate core group 15 and fluid intake respectively, form left heat exchanger components by left flange face 25, left collocation structure and left plate core group 15; Described right collocation structure is located between right flange face 21 and the right panel label group 18, two through holes in described right collocation structure right side connect with the second fluid streams of right flange face 21 outlet the 20 and second fluid streams entrance 22 respectively, two through holes in described right collocation structure left side connect with fluid issuing and the fluid intake of right panel label group 18 respectively, form right heat exchanger components by right flange face 21, right compensating plate structure and right panel label group 18; Described left heat exchanger components and right heat exchanger components are installed in respectively the two ends, the left and right sides of described housing 16, and dividing plate 17 is installed between the right panel label group 18 of the left plate core group 15 of described left heat exchanger components and right heat exchanger components; Described first strand of heat transferring medium enters left heat exchanger components from the first fluid streams outlet 13 outflows of left flange face 25 by the first fluid streams entrance 24 of left flange face 25; Described second strand of heat transferring medium enters right heat exchanger components from the second fluid streams outlet 20 outflows of right flange face 21 by the second fluid streams entrance 22 of right flange face 21; Described the 3rd strand of heat transferring medium entered in the cavity between housing 16 and left heat exchanger components, the right heat exchanger components by the shell-side fluid import 19 of housing 16 and flowed out by the shell fluid outlet 23 of housing 16.
Also comprise two baffles 3, described two baffles 3 are installed between described housing 16 and left heat exchanger components, the right heat exchanger components in the cavity and left-right symmetry.
The plate 11 of described left plate core group 15 and right panel label group 18 is the ripple type structure.
The thickness of described plate 11 is 0.6mm~1.0mm.
The thickness of described left flange face 25 and right flange face 21 is 15mm~20mm.
The below elaborates the effect of the left compensating plate 14 of set temperature and right compensating plate 26.In existing shell-and-plate heat exchanger, ingress port pipe and outlet port tube are welded direct on plate 11 cores, thereby obtain the plate side stream passages of pressure-tight.Ingress port pipe and outlet port tube also are soldered on the left flange face 25 and right flange face 21 of heat exchanger simultaneously.The thickness of plate 11 is usually between 0.6mm~1mm, and the thickness of left flange face 25 and right flange face 21 is usually between 15mm~20mm.Because the difference of thin and thick, heat exchange plate 11 is faster with the blue face 25 of bezout's method and 21 pairs of thermal change reactions of right flange face, thus between entrance and outlet and heat exchanger plate with stress application.If this connection stands thermal cycle, this connection will damage and may rupture at last.
The purpose of left compensating plate 14 and right compensating plate 26 is a kind of transition structures between heat exchange plate 11 and left flange face 25 and right flange face 21, its thermal strain should be between left flange face 25 and right flange face 21 and the heat exchange plate 11, and the joint of alleviating between heat exchange plate 11 and left flange face 25 and the right flange face 21 causes stress to concentrate and heat fatigue.As shown in Figure 5, left compensating plate 14 and right compensating plate 26 are a series of concentric structures, the convex ridge structure of left compensating plate 14 and right compensating plate 26 is (such as Fig. 6, shown in Figure 7) different from the ripple struction (as shown in Figure 5) of heat exchange plate 11, the ripple inclined-plane of left compensating plate 14 and right compensating plate 26 is closer to vertically, and the plate 11 that these structures can be has less radial stress when thermal expansion.
Fig. 8 has provided the concrete connected mode of left compensating plate 14.There are two left compensating plates 14 to carry out transition between heat exchange plate 11 and the left flange face 25.The convex ridge of left compensating plate 14 is resisted against on the convex ridge of adjacent left compensating plate 14, has very limited stream in plate side stream passages and shell-side circulation road.So be the compensation that does not have flow to cross between the left compensating plate 14.Fast and high temperature occurs in heat exchanger rise, the heat exchanger plate of left plate core group will expand immediately.Left compensating plate 14 will than heat exchanger plate expand slightly slow because most of left compensating plate 14 not with the Liu Chu that flows through heat exchanger and large contacting.Because left compensating plate 14 stacked groups are connected on the heat exchanger plate stacked group on the one hand, and are connected on the other hand on the left flange face 25, so each left compensating plate 14 will slightly differently expand.Thereby will help to reduce to greatest extent the stress that is applied to left flange face 25 places and puts on heat exchange plate 11 junctions.
A kind of lamella heat exchanger of new structure can be realized the heat exchange of three fluid streams.Conventional lamella heat exchanger can only be realized two plume heat exchange, and two groups of plate cores of the utility model share a housing, can realize three plume heat exchange, plate side two plumes, shell-side one plume at a heat exchanger.Conventional lamella heat exchanger is because end plate adopts with heat exchanger plates is welded to connect, the difference of material thickness, and the thermal strain that causes is inharmonious, easily at the larger stress of junction generation.The utility model is provided with the thermal compensation plate between heat exchanger plates and end plate, the special structure of compensating plate has played the effect of relieve stresses.
The above only is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.