Utility model content
In view of this, the purpose of this utility model is to provide a kind of tube-sheet heat exchanger, to improve the heat exchange efficiency of heat exchanger, reduces exchanger body sum weight.
For achieving the above object, the utility model provides following technical scheme:
A kind of tube-sheet heat exchanger, comprises housing and in the heat exchange tube sheet of arranged in arrays in described housing; The flat tube of described heat exchange tube sheet to be cross section be rectangle; Described housing comprises two installing plates be oppositely arranged, and described installing plate is provided with the air hole in arranged in arrays, and two mouths of pipe of described heat exchange tube sheet are tightly connected with the air hole on two described installing plates respectively; Two sides parallel with the leptoprosopy of described heat exchange tube sheet on described housing offer smoke ventilator.
Preferably, in above-mentioned tube-sheet heat exchanger, described installing plate is removably tightly connected on the housing.
Preferably, in above-mentioned tube-sheet heat exchanger, the length L in the cross section of described heat exchange tube sheet and the ratio of width W are L:W=(3 ~ 100): 1.
Preferably, in above-mentioned tube-sheet heat exchanger, in the pipe of described heat exchange tube sheet, cross-sectional width S1 is 5mm ~ 30mm.
Preferably, in above-mentioned tube-sheet heat exchanger, the wall thickness of described heat exchange tube sheet is 2mm ~ 20mm.
Preferably, in above-mentioned tube-sheet heat exchanger, the gap of the exhaust gases passes that adjacent described heat exchange tube sheet outer surface is formed is S2, and S2 >=S1.
Preferably, in above-mentioned tube-sheet heat exchanger, described heat exchange tube sheet layered arrangement, in described housing, arranges Y layer, Y >=2 altogether, arranges M described heat exchange tube sheet, M >=2 for every layer.
Preferably, in above-mentioned tube-sheet heat exchanger, be adhesively fixed by sealant between two mouths of pipe of described heat exchange tube sheet and the air hole of described installing plate or be welded and fixed.
Preferably, in above-mentioned tube-sheet heat exchanger, the material of described heat exchange tube sheet is glass or metal.
Preferably, in above-mentioned tube-sheet heat exchanger, described enclosure interior is provided with the medium position being positioned at described heat exchange tube sheet, for supporting the gripper shoe of described heat exchange tube sheet.
Compared with prior art, the beneficial effects of the utility model are:
In the tube-sheet heat exchanger that the utility model provides, have employed cross section is that the flat tube of rectangle is as heat exchanger tube, referred to here as heat exchange tube sheet, instead of the heat exchanger tube of the circular tube shaped in traditional pipe heat exchanger, heat exchange tube sheet be arranged in arrays in the housing, and two of heat exchange tube sheet mouths of pipe are tightly connected with the air hole on housing two installing plates respectively, and two sides parallel with the leptoprosopy of heat exchange tube sheet on housing offer smoke ventilator.Operationally, air enters in heat exchange tube sheet from the air hole the installing plate of side, meanwhile, flue gas enters housing from the smoke ventilator of housing, flow through the exhaust gases passes formed by adjacent heat exchange tube sheet outer surface, carry out exchange heat, after heat exchange completes with the air in heat exchange tube sheet, air at the opposite side mouth of pipe of heat exchange tube sheet discharged to air duct, flue gas by the smoke ventilator on housing another side discharged to flue.Because heat exchange tube sheet is the flat tube of rectangle, heat exchanger effectiveness is suitable with plate type heat exchanger, and, compared with the pipe heat exchanger of typical circular pipe, heat exchange tube sheet is more conducive to spatial arrangement, and space availability ratio is higher, therefore can reduce the volume and weight of heat exchanger.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The front view of a kind of tube-sheet heat exchanger that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the left view of the tube-sheet heat exchanger in Fig. 1;
Fig. 3 is the top view of the tube-sheet heat exchanger in Fig. 1;
Fig. 4 is the partial sectional view in the A-A cross section in Fig. 1;
The monomer structure schematic diagram of the heat exchange tube sheet of a kind of tube-sheet heat exchanger that Fig. 5 provides for the utility model embodiment;
The arrangement schematic diagram of the heat exchange tube sheet of a kind of tube-sheet heat exchanger that Fig. 6 provides for the utility model embodiment.
In above-mentioned Fig. 1-Fig. 6, the cross-sectional width that 1 be housing, 2 be heat exchange tube sheet, 3 be installing plate, 301 is air hole, 4 is exhaust gases passes, 5 is gripper shoe, L is heat exchange tube sheet cross-sectional length, W is heat exchange tube sheet, S1 be heat exchange tube sheet pipe in cross-sectional width, S2 be the gap of the exhaust gases passes that adjacent heat exchange tube sheet outer surface is formed.
Detailed description of the invention
Core of the present utility model there is provided a kind of tube-sheet heat exchanger, improves the heat exchange efficiency of heat exchanger, reduces exchanger body sum weight.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1-Fig. 6, the front view of a kind of tube-sheet heat exchanger that Fig. 1 provides for the utility model embodiment; Fig. 2 is the left view of the tube-sheet heat exchanger in Fig. 1; Fig. 3 is the top view of the tube-sheet heat exchanger in Fig. 1; Fig. 4 is the partial sectional view in the A-A cross section in Fig. 1; The monomer structure schematic diagram of the heat exchange tube sheet of a kind of tube-sheet heat exchanger that Fig. 5 provides for the utility model embodiment; The arrangement schematic diagram of the heat exchange tube sheet of a kind of tube-sheet heat exchanger that Fig. 6 provides for the utility model embodiment.
The utility model embodiment provides a kind of tube-sheet heat exchanger, comprises housing 1 and heat exchange tube sheet 2; Heat exchange tube sheet 2 one-tenth is arranged within the case 1 in array, and heat exchange tube sheet 2 is flat tube, and cross sectional shape is rectangle, therefore, the axial direction of heat exchange tube sheet 2 has leptoprosopy and wide; Housing 1 comprises two installing plates be oppositely arranged 3, installing plate 3 offers the air hole 301 in arranged in arrays, and two mouths of pipe of heat exchange tube sheet 2 are tightly connected with the mutual corresponding air hole 301 on two installing plates 3 respectively; Housing 1 can be rectangular structure, two sides parallel with the leptoprosopy of heat exchange tube sheet 2 on housing 1 offer smoke ventilator, namely after flue gas enters housing 1, perpendicular to the axial flow of heat exchange tube sheet 2, and form gap S2 between wide of adjacent heat exchange tube sheet 2, this gap S2 is exhaust gases passes 4, and flue gas flows in exhaust gases passes 4.
The specific works process of above-mentioned tube-sheet heat exchanger is: air enters in heat exchange tube sheet 2 from the air hole 301 of side installing plate 3, flow to opposite side installing plate 3 direction, meanwhile, flue gas enters in housing 1 from the side smoke ventilator of housing 1, flue gas flows in exhaust gases passes 4, namely flow in the gap between wide of adjacent heat exchange tube sheet 2, the exterior surface of flue gas and heat exchange tube sheet 2, thus carry out heat exchange with the air of heat exchange tube sheet 2 inside, after exchange completes, in air flow air duct in heat exchange tube sheet 2, for recycling, flue gas then enters in flue.
Can find out, tube-sheet heat exchanger in the utility model adopts the flat tube of rectangular shape as heat exchanger tube, i.e. heat exchange tube sheet 2, heat exchange tube sheet 2 is compared with traditional circular pipe type heat exchanger tube, heat exchange tube sheet 2 can be arranged more closely in housing 1, space availability ratio is high, and heat exchange area increases, heat exchanger effectiveness improves, be equivalent to the heat exchanger effectiveness of plate type heat exchanger, but it is simpler than the structure of plate type heat exchanger, manufacturing process is simple, cost is low, and owing to sealing between installing plate 3 and housing 1, seal between heat exchange tube sheet 2 and installing plate 3, so prevent air leak to fume side, and because the space availability ratio of flat rectangular pipe is high, then can reduce quality and the volume of heat exchanger.
As shown in Figure 1, in the present embodiment, installing plate 3 and housing 1 are Split type structure, installing plate 3 is removably sealedly connected on housing 1, because installing plate 3 and housing 1 are tightly connected, air hole 301 on the mouth of pipe of heat exchange tube sheet 2 and installing plate 3 is tightly connected, therefore, installing plate 3 is completely isolated with the exhaust gases passes 4 of housing 1 inside by heat exchange tube sheet 2, air can only enter heat exchange tube sheet 2 from air hole 301, prevent air leakage in exhaust gases passes 4, thus avoid the energy loss of air.Particularly, installing plate 3 is connected on housing 1 by screw, bolt seal, for convenience detach, and installing plate 3 can be one-shot forming structure, also can be made by the method such as Metal Cutting or assembly welding; Certainly, installing plate 3 can also be bonding or be welded on housing 1, or to be formed in one structure with housing 1.
As shown in Figure 1 and Figure 5, the length L in the cross section of heat exchange tube sheet 2 and the ratio of width W are L:W=(3 ~ 100): 1, make heat exchange tube sheet 2 for flat tube, heat exchange tube sheet 2 has leptoprosopy and wide in the axial direction, gap between wide of adjacent heat exchange tube sheet 2 forms exhaust gases passes 4, because wide comparatively large with the contact area of flue gas, heat exchanger effectiveness is higher.Preferably, the ratio of L and W is 5:1, certainly, selects suitable length-width ratio according to actual conditions, does not limit to and cited ratio in the present embodiment and scope.
More specifically, as shown in Figure 1 and Figure 5, in the pipe of heat exchange tube sheet 2, cross-sectional width S1 is 5mm ~ 30mm.The wall thickness of heat exchange tube sheet 2 is 2mm ~ 20mm.Select the heat exchange tube sheet 2 of suitable dimension according to different heat exchanger sizes, the size provided in the present embodiment is provided.
As shown in Figure 1, Figure 2 and Figure 4, in the present embodiment, the gap of exhaust gases passes 4 that adjacent heat exchange tube sheet 2 outer surface is formed is S2, and S2 >=S1, object is in order under ensureing the prerequisite that the heat exchange efficiency of air and flue gas is higher, improves the throughput of flue gas, improves the speed of flue gas waste heat recovery.
As shown in Figure 1, Figure 2 with shown in Fig. 6, in the present embodiment, heat exchange tube sheet 2 layered arrangement within the case 1, total Y layer, Y >=2, arrange M heat exchange tube sheet, M >=2 for every layer.This is rectangular array layout, and for the housing 1 of rectangular shape, rectangular array is arranged higher to the utilization rate of housing 1.Certainly, when housing 1 is columnar structured, heat exchange tube sheet 2 can adopt multilayer arrangement, but the quantity of every layer of heat exchange tube sheet 2 is increased to middle part gradually by edge, to make full use of enclosure interior space, in a word, adopt arranged in arrays structure both can realize modularization and install, and heat exchanger effectiveness reaches optimization.
Further optimization, as shown in Figure 4, is adhesively fixed by sealant between two mouths of pipe of heat exchange tube sheet 2 and the air hole 301 of installing plate 3 or is welded and fixed.When adopting sealant to be adhesively fixed, then, while guarantee heat exchange tube sheet 2 is tightly connected with installing plate 3, can also dismantle separately by heat exchanging tube sheet 2, easy maintenance and replacement.Wherein, sealant is specially polytetrafluoroethylene (PTFE) pad or high-temp glue.
In the present embodiment, the material of heat exchange tube sheet is glass or metal, is more preferably glass material, is specially industrial High temperature tempered glass, because flue gas produced by after fuel combustion, produce sulfur dioxide after fuel combustion, and have a small amount of oxidation further to generate sulfur trioxide, flue gas also has certain water, when making flue gas lower than its dew-point temperature, very easily heat exchanger causes acid corrosion, and adopts safety glass, then effectively prevent the corrosion of heat exchanger plates pipe 2.And safety glass is made the flat tube structure that cross section is rectangle, compared with large stretch of glass plate, structural strength is better, not easily broken, is convenient to manufacture, transport and install.Certainly, heat exchange tube sheet 2 also can adopt metal, and when flue-gas temperature is greater than 400 degree, 304 stainless steels selected by heat exchange tube sheet 2, and when flue-gas temperature is between 180 ~ 400 degree, ordinary carbon steel selected by heat exchange tube sheet 2.
As shown in Figure 2, in the present embodiment, in order to ensure the installation strength of heat exchange tube sheet 2, gripper shoe 5 is provided with in housing 1, gripper shoe 5 is supported on the medium position of heat exchange tube sheet 2, and gripper shoe 5 is one block of plate, it correspondingly offers for the supported hole through heat exchange tube sheet 2.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.