CN205784734U - A kind of tubular heat exchanger - Google Patents
A kind of tubular heat exchanger Download PDFInfo
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- CN205784734U CN205784734U CN201620451576.4U CN201620451576U CN205784734U CN 205784734 U CN205784734 U CN 205784734U CN 201620451576 U CN201620451576 U CN 201620451576U CN 205784734 U CN205784734 U CN 205784734U
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- cylindrical case
- tube
- flue gas
- heat exchanger
- temperature flue
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Abstract
The open a kind of tubular heat exchanger of this utility model.It includes cylindrical case, tube sheet, and the shell wall at cylindrical case two ends has high-temperature flue gas import and export respectively.Cylindrical case two ends have air import and export respectively.Being characterized in that tube sheet contains two outer tube plates and two internal tube plates, the pore on outer, internal tube plate is corresponding.One outer tube plate is all connected with stainless steel tube between the corresponding pore on adjacent inner tube plate, is all connected with carbon steel pipe between another outer tube plate to the corresponding pore on adjacent inner tube plate.All there is opening on the cylindrical case of two internal tube plate outsides, outside two openings, have cover so that the cylindrical case inner chamber at stainless steel tube place is connected with between the cylindrical case inner chamber at carbon steel pipe place.Opening and cover are in the same side of high-temperature flue gas import.This tubular heat exchanger, heat exchange efficiency is high, and service life is long.It is applicable to the high-temperature flue gas after utilizing natural gas, fire coal or fuel oil burning air is heated.
Description
Technical field
This utility model relates to a kind of heat exchanger.Specifically, it is the high-temperature flue gas tandem tubular heat exchanger that air is heated after utilizing natural gas, fire coal or fuel oil burning.
Background technology
The flue-gas temperature discharged after natural gas, fire coal or fuel oil burning is up to about 1000 DEG C, if do not recycled, can cause the waste of the energy.Therefore, people use tubular heat exchanger to recycle the high-temperature flue gas discharged.Traditional tubular heat exchanger is all single-body type tubular heat exchanger, this single-body type tubular heat exchanger includes cylindrical case, it is machined with high-temperature flue gas import and high-temperature flue gas outlet, described high-temperature flue gas import and high-temperature flue gas outlet on the shell wall at cylindrical case two ends respectively to lay respectively on the shell wall of cylindrical case offside.All there is conical lid at shape shell two ends, and the big end of two conical lids two ends with cylindrical case respectively link together, and the small end away from that conical lid of high-temperature flue gas outlet has air intlet, the small end of that conical lid of neighbouring high-temperature flue gas import has air outlet slit.Cylindrical case two ends are provided with tube sheet, and tube sheet is evenly equipped with pore, and the pore on two tube sheets is corresponding, are all connected with heat exchanger tube between the pore on corresponding two tube sheets.Wherein, described cylindrical case, tube sheet are mostly steel article, and heat exchanger tube existing use carbon steel pipe, also have and use stainless steel tube.If heat exchanger tube uses stainless steel tube, can high-temperature corrosion resistance.But owing to stainless steel tube heat transfer coefficient is little, the heat exchange efficiency of heat exchanger can be reduced.If heat exchanger tube uses carbon steel pipe, owing to the heat transfer coefficient of carbon steel pipe is big, it is greatly improved the heat exchange efficiency of heat exchanger.But owing to carbon steel pipe high-temperature corrosion resistance performance is poor, the service life of heat exchanger can be greatly shortened.
Owing to traditional tubular heat exchanger is all single-body type tubular heat exchanger, connection between heat exchanger tube two ends and tube sheet is expanding plus welding, in heat transfer process, shell machine tube sheet temperature is relatively low, and tubulation temperature is higher, tube sheet is different from the thermal expansion amount of tubulation, so that tube sheet produces pressure to tubulation so that the at high temperature intensity of the weld seam between tubulation and tube sheet reduces and splits.Therefore, traditional tubular heat exchanger is easily damaged, and service life is the longest.
Air owing to entering from air intlet is sent directly into tubulation and carries out heat exchange again, and air is difficult to the tube wall with tubulation during flowing inside the Pass row and contacts so that heat transfer effect is the most insufficient, so, also can reduce the heat exchange efficiency of heat exchanger.
Utility model content
Problem to be solved in the utility model is to provide a kind of tubular heat exchanger.This tubular heat exchanger, heat exchange efficiency is high, and service life is long.
The problems referred to above to be solved in the utility model are realized by techniques below scheme:
Tubular heat exchanger of the present utility model includes cylindrical case, tube sheet, the shell wall at cylindrical case two ends has respectively high-temperature flue gas import and high-temperature flue gas outlet, described high-temperature flue gas import and high-temperature flue gas outlet lay respectively on the shell wall of cylindrical case offside.Cylindrical case two ends have air intlet and air outlet slit respectively.Being characterized in that described tube sheet contains two outer tube plates and two internal tube plates, two outer tube plates lay respectively at the two ends of cylindrical case, and the longitudinal direction approximation that two internal tube plates are respectively positioned on cylindrical case leaves spacing between middle, and two internal tube plates.Described outer tube plate is corresponding with the pore on internal tube plate.One outer tube plate is all connected with stainless steel tube between the corresponding pore on adjacent inner tube plate, is all connected with carbon steel pipe between another outer tube plate to the corresponding pore on adjacent inner tube plate.Described high-temperature flue gas import is opened on the corresponding cylindrical case shell wall inside that outer tube plate of adjacent stainless steel pipe side, and high-temperature flue gas outlet is opened on the corresponding cylindrical case shell wall inside that outer tube plate of neighbouring carbon steel pipe side.All have on the cylindrical case of two internal tube plate outsides and be easy to the opening that high-temperature flue gas passes through, outside two openings, have the cover for covering two openings so that the cylindrical case inner chamber at stainless steel tube place is connected with between the cylindrical case inner chamber at carbon steel pipe place.Described opening and cover are in the same side of high-temperature flue gas import.
Further improvement of the utility model scheme is, has thermal insulation layer between the stainless steel tube inside that outer tube plate of adjacent stainless steel pipe outer end.
Further improvement of the utility model scheme is, all has helical form conducting element in carbon steel pipe outer end.
Further improvement of the utility model scheme is, all has helical form conducting element in stainless steel tube inner end in stainless steel tube inner end.
Further improvement of the utility model scheme is, all has deflector between the outer tube plate that two internal tube plates are adjacent respectively.
Further improvement project of the present utility model is, that conical lid small end at air intlet place is connected with short pipe, and the outer end of short pipe is closed, and described air intlet is opened on the tube wall of short pipe, and in arranged tangential between air intlet and short round tube inner wall.
As can be seen from the above scheme, owing to described tube sheet contains two outer tube plates and two internal tube plates, two outer tube plates lay respectively at the two ends of cylindrical case, and the longitudinal direction approximation that two internal tube plates are respectively positioned on cylindrical case leaves spacing between middle, and two internal tube plates.Described outer tube plate is corresponding with the pore on internal tube plate.One outer tube plate is all connected with stainless steel tube between the corresponding pore on adjacent inner tube plate, is all connected with carbon steel pipe between another outer tube plate to the corresponding pore on adjacent inner tube plate.Described high-temperature flue gas import is opened on the corresponding cylindrical case shell wall inside that outer tube plate of adjacent stainless steel pipe side, and high-temperature flue gas outlet is opened on the corresponding cylindrical case shell wall inside that outer tube plate of neighbouring carbon steel pipe side.All have on the cylindrical case of two internal tube plate outsides and be easy to the opening that high-temperature flue gas passes through, outside two openings, have the cover for covering two openings so that the cylindrical case inner chamber at stainless steel tube place is connected with between the cylindrical case inner chamber at carbon steel pipe place.Described opening and cover are in the same side of high-temperature flue gas import.
Using this structure so that this utility model is formed by two Shell-and-Tube Exchangers in Series, the heat exchanger tube in that heat exchanger in high temperature environments uses stainless steel tube, and owing to stainless steel tube has high-temperature corrosion resistance performance, can avoid the high-temperature oxydation of heat exchanger tube.Heat exchanger tube in that heat exchanger at low ambient temperatures uses carbon steel pipe, and owing to the heat transfer coefficient of carbon steel pipe is big, can improve the heat exchange efficiency of heat exchanger.Therefore, use this utility model, not only increase the heat exchange efficiency of heat exchanger, extend the service life of heat exchanger, also reduce device fabrication cost.
Owing to being provided with thermal insulation layer between the stainless steel tube inside that outer tube plate of adjacent stainless steel pipe outer end, by thermal insulation layer, the junction of high-temperature flue gas with tube sheet and stainless steel tube is kept apart, the situation avoiding the reduction of the at high temperature intensity of the weld seam between tube sheet and stainless steel tube and split occurs, thus extends the service life of heat exchanger.
Again owing to and being provided with helical form conducting element in stainless steel tube inner end in carbon steel pipe outer end, make gas in flow process in stainless steel tube peace talk steel pipe, contact with carbon steel pipe inwall and stainless steel inside pipe wall more abundant, thus further increase the heat exchange efficiency of heat exchanger.
Accompanying drawing explanation
Fig. 1 is tubular heat exchanger structural representation of the present utility model；
Fig. 2 is the I point enlarged diagram of Fig. 1；
Fig. 3 is the J point enlarged diagram of Fig. 1；
Fig. 4 is Fig. 1 schematic top plan view.
Detailed description of the invention
As shown in Figure 1, tubular heat exchanger of the present utility model includes cylindrical case 6, tube sheet, high-temperature flue gas import 3 and high-temperature flue gas outlet 12, described high-temperature flue gas import 3 and high-temperature flue gas outlet 12 is had to lay respectively on the shell wall of cylindrical case 6 offside on the shell wall at cylindrical case 6 two ends respectively.Cylindrical case 6 two ends are provided with conical lid 11, the big end of two conical lids 11 go-and-retum with cylindrical case 6 respectively welds together in sealing shape, it is machined with air intlet 9 on small end away from that conical lid 11 of high-temperature flue gas outlet 12, the small end of that conical lid 11 of neighbouring high-temperature flue gas import 12 is machined with air outlet slit 1.
Described tube sheet contains two outer tube plates 2 and two internal tube plates 7, and two outer tube plates 2 lay respectively at the two ends of cylindrical case 6, and the longitudinal direction approximation that two internal tube plates 7 are respectively positioned on cylindrical case 6 leaves spacing between middle, and two internal tube plates 7.Being machined with pore on described outer tube plate 2 and internal tube plate 7 equably, outer tube plate 2 is corresponding with the pore on internal tube plate 7.One outer tube plate 2 is all connected with stainless steel tube 5 in sealing shape between the corresponding pore on adjacent inner tube plate 7, is all connected with carbon steel pipe 8 in sealing shape between another outer tube plate 2 to the corresponding pore on adjacent inner tube plate 7.Described high-temperature flue gas import 3 is opened on corresponding cylindrical case 6 shell wall inside that outer tube plate 2 of adjacent stainless steel pipe 5 side, and high-temperature flue gas outlet 12 is opened on corresponding cylindrical case 6 shell wall inside that outer tube plate 2 of neighbouring carbon steel pipe 8 side.
All being machined with on the cylindrical case 6 of two internal tube plate 7 outsides and be easy to the opening 16 that high-temperature flue gas passes through, two opening 16 outer masks have the cover 15 for covering two openings 16, and weld together in sealing shape between the oral area surrounding of cover 15 and cylindrical case 6.Cylindrical case 6 inner chamber at stainless steel tube 5 place is connected with between cylindrical case 6 inner chamber at carbon steel pipe 8 place.Wherein, described opening 16 and cover 15 are in the same side of high-temperature flue gas import 3.
As it is shown on figure 3, for ease of the junction of high-temperature flue gas with tube sheet and stainless steel tube 5 is kept apart, it is to avoid the situation that the at high temperature intensity of the weld seam between tube sheet and stainless steel tube 5 reduces and splits occurs, and extends the service life of heat exchanger.It is provided with thermal insulation layer 14 between the stainless steel tube 5 inside that outer tube plate 2 of adjacent stainless steel pipe 5 outer end.
As in figure 2 it is shown, for making gas in flow process in stainless steel tube 5 and carbon steel pipe 8, more abundant with carbon steel pipe 8 inwall and stainless steel tube 5 contact internal walls, improve the heat exchange efficiency of heat exchanger further.And it is provided with helical form conducting element 13 in stainless steel tube 5 inner end in carbon steel pipe 8 outer end.Described helical form conducting element 13 is spring.
For extending the high-temperature flue gas time of staying in cylindrical case 6, improve heat exchange efficiency, between the outer tube plate 2 that two internal tube plates 7 are adjacent respectively, be provided with deflector 4.Link together in sealing shape between the upper edge edge of described deflector 4 and the inwall of cylindrical case 6, between following and cylindrical case 6 corresponding position of described deflector 4, leave the spacing as high temp. flue.High-temperature flue gas is entered by the spacing formed between corresponding outer tube plate 2 and deflector 4 from high-temperature flue gas import, and enters another spacing being made up of with corresponding internal tube plate 7 this deflector 4 after flowing through described spacing.
More uniform in order to make carbon steel pipe 8 be bullied, improve the heat exchange efficiency of heat exchanger further, that conical lid 11 small end at air intlet 9 place is connected with short pipe 10, the outer end of short pipe 10 is closed, described air intlet 9 is opened on the tube wall of short pipe 10, and in arranged tangential between air intlet 9 and short pipe 10 inwall so that air first enters in air intlet 9 in tangential, then imports in heat exchanger in tangential.
During work, the runner that high-temperature flue gas sequentially enters the spacing between that outer tube plate 2 by stainless steel tube 5 outer end and that adjacent deflector 4 from high-temperature flue gas import 3, this deflector 4 runner, cover 15 and opening 16 below and between cylindrical case 6 medial surface is constituted enters by the spacing between that internal tube plate 7 and adjacent baffle 4 of carbon steel pipe 8 inner end, this deflector 4 runner below and between cylindrical case 6 medial surface, finally from high-temperature flue gas outlet 12 discharge.
Claims (7)
1. a tubular heat exchanger, including cylindrical case (6), tube sheet, high-temperature flue gas import (3) and high-temperature flue gas outlet (12), described high-temperature flue gas import (3) and high-temperature flue gas outlet (12) is had to lay respectively on the shell wall of cylindrical case (6) offside on the shell wall at cylindrical case (6) two ends respectively；Cylindrical case (6) two ends have air intlet (9) and air outlet slit (1) respectively；It is characterized in that described tube sheet contains two outer tube plates (2) and two internal tube plates (7), two outer tube plates (2) lay respectively at the two ends of cylindrical case (6), two internal tube plates (7) are respectively positioned on the longitudinal direction approximation of cylindrical case (6) and leave spacing between middle, and two internal tube plates (7)；Described outer tube plate (2) is corresponding with the pore on internal tube plate (7)；One outer tube plate (2) to be all connected with stainless steel tube (5) between the corresponding pore on adjacent inner tube plate (7), be all connected with carbon steel pipe (8) between another outer tube plate (2) to the corresponding pore on adjacent inner tube plate (7)；Described high-temperature flue gas import (3) is opened on corresponding cylindrical case (6) shell wall of that outer tube plate (2) inner side of adjacent stainless steel pipe (5) side, and high-temperature flue gas outlet (12) is opened on corresponding cylindrical case (6) shell wall of that outer tube plate (2) inner side of neighbouring carbon steel pipe (8) side；The opening (16) be easy to high-temperature flue gas and pass through all is had on the cylindrical case (6) of two internal tube plate (7) outsides, there is the cover (15) for covering two openings (16) two openings (16) outside so that cylindrical case (6) inner chamber at stainless steel tube (5) place is connected with between cylindrical case (6) inner chamber at carbon steel pipe (8) place；Described opening (16) and cover (15) are in the same side of high-temperature flue gas import (3).
2. the tubular heat exchanger described in claim 1, it is characterised in that have thermal insulation layer (14) between the stainless steel tube (5) of that outer tube plate (2) inner side of adjacent stainless steel pipe (5) outer end.
3. the tubular heat exchanger described in claim 2, it is characterised in that all have helical form conducting element (13) in carbon steel pipe (8) outer end.
4. the tubular heat exchanger described in claim 3, it is characterised in that all have helical form conducting element (13) in stainless steel tube (5) inner end.
5. the tubular heat exchanger according to any one of claim 1 ~ 4, it is characterised in that all have deflector (4) between the outer tube plate (2) that two internal tube plates (7) are adjacent respectively.
6. the tubular heat exchanger according to any one of claim 1 ~ 4, it is characterized in that that conical lid (11) small end at air intlet (9) place is connected with short pipe (10), the outer end of short pipe (10) is closed, described air intlet (9) is opened on the tube wall of short pipe (10), and in arranged tangential between air intlet (9) and short pipe (10) inwall.
7. the tubular heat exchanger described in claim 5, it is characterized in that that conical lid (11) small end at air intlet (9) place is connected with short pipe (10), the outer end of short pipe (10) is closed, described air intlet (9) is opened on the tube wall of short pipe (10), and in arranged tangential between air intlet (9) and short pipe (10) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451576.4U CN205784734U (en) | 2016-05-18 | 2016-05-18 | A kind of tubular heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620451576.4U CN205784734U (en) | 2016-05-18 | 2016-05-18 | A kind of tubular heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN205784734U true CN205784734U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620451576.4U Active CN205784734U (en) | 2016-05-18 | 2016-05-18 | A kind of tubular heat exchanger |
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| CN (1) | CN205784734U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865232A (en) * | 2016-05-18 | 2016-08-17 | 无锡华精新材股份有限公司 | Shell-and-tube heat exchanger |
| CN107175051A (en) * | 2017-06-29 | 2017-09-19 | 上海化工研究院有限公司 | Pulsating hydrogenating reduction method prepares device and its application of carrier automotive catalyst |
-
2016
- 2016-05-18 CN CN201620451576.4U patent/CN205784734U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865232A (en) * | 2016-05-18 | 2016-08-17 | 无锡华精新材股份有限公司 | Shell-and-tube heat exchanger |
| CN107175051A (en) * | 2017-06-29 | 2017-09-19 | 上海化工研究院有限公司 | Pulsating hydrogenating reduction method prepares device and its application of carrier automotive catalyst |
| CN107175051B (en) * | 2017-06-29 | 2020-08-11 | 上海化工研究院有限公司 | Device for preparing carrier vehicle catalyst by pulse hydrogenation reduction method and application thereof |
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| GR01 | Patent grant |