CN216558422U - Sleeve pipe type shell-and-tube heat exchanger - Google Patents
Sleeve pipe type shell-and-tube heat exchanger Download PDFInfo
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- CN216558422U CN216558422U CN202123198955.7U CN202123198955U CN216558422U CN 216558422 U CN216558422 U CN 216558422U CN 202123198955 U CN202123198955 U CN 202123198955U CN 216558422 U CN216558422 U CN 216558422U
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Abstract
The utility model discloses a sleeve-type tube-shell heat exchanger, which comprises a shell, wherein an upper tube plate and a lower tube plate are fixedly arranged in the shell, the interior of the shell is divided into a hot air collection chamber, a heat exchange chamber and a cold air collection chamber which are sequentially arranged from top to bottom by the upper tube plate and the lower tube plate, the hot air collection chamber is internally and separately provided with a cold air distribution chamber, the upper end of an inner heat exchange tube is communicated with the cold air distribution chamber, the lower end of the inner heat exchange tube is fixedly arranged on the lower tube plate and is communicated with the cold air collection chamber, the upper end of an outer sleeve is fixedly arranged on the upper tube plate and is communicated with the hot air collection chamber, the lower end of the outer sleeve is arranged in the heat exchange chamber, the outer sleeve and the inner heat exchange tubes are arranged in a one-to-one correspondence manner, the outer sleeve is sleeved outside the corresponding inner heat exchange tubes, and a gap is arranged between the outer sleeve and the inner heat exchange tubes; the utility model thoroughly eliminates the thermal stress among the shell, the outer sleeve and the inner heat exchange tube, improves the running safety and stability of the sleeve type heat exchanger and effectively avoids the defects of leakage of the heat exchange tube, the tube plate and the like caused by the thermal stress.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, in particular to a double-pipe shell-and-tube heat exchanger.
Background
The existing shell-and-tube heat exchanger is generally a double-tube plate and a single-layer heat exchange tube bundle, the temperature difference between cold and hot media is less than or equal to 50 ℃, if the temperature difference between the cold and hot media is greater than 50 ℃, an expansion joint is arranged at the barrel part, and because the expansion joint meets the stress relief, the high-pressure requirement is difficult to meet, if the working condition pressure is greater than 10MPa, the temperature difference between the cold and hot media is greater than 100 ℃, the existing shell-and-tube heat exchanger cannot meet the requirement.
In view of the drawbacks, the present inventors have finally obtained the present invention through long-term research and practice.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical defects, the utility model adopts the technical scheme that the double-pipe shell-and-tube heat exchanger comprises a shell, an upper tube plate and a lower tube plate are fixedly arranged in the shell, the upper tube plate and the lower tube plate divide the inner part of the shell into a hot air collection chamber, a heat exchange chamber and a cold air collection chamber which are sequentially arranged from top to bottom, a cold air distribution chamber is also arranged in the hot air collection chamber in an isolated manner, the upper end of the inner heat exchange tube is communicated with the cold air distribution chamber, the lower end of the inner heat exchange tube is fixedly arranged on the lower tube plate and is communicated with the cold air collection chamber, the upper end of the outer sleeve is fixedly arranged on the upper tube plate and is communicated with the hot air collection chamber, the lower end of the outer sleeve is arranged in the heat exchange chamber, and the outer sleeve and the inner heat exchange tube are arranged in a one-to-one correspondence manner, the outer sleeve is sleeved outside the inner heat exchange tube in a corresponding manner, and a gap is formed between the outer sleeve and the inner heat exchange tube.
Preferably, the outer sleeve and the corresponding inner heat exchange tube are coaxially arranged.
Preferably, the casing comprises an upper end enclosure, a cylinder body, a gas collection cavity cylinder body and a lower end enclosure, the upper end enclosure is fixedly arranged at the upper end of the gas collection cavity cylinder body, the lower end of the gas collection cavity cylinder body is hermetically connected with the upper end of the cylinder body through the upper tube plate, and the lower end of the cylinder body is hermetically connected with the lower end enclosure through the lower tube plate.
The preferred, be provided with in the steam collection chamber and float first head, float the head tube sheet with thereby float first head fixed connection form in inside with the steam collection chamber is kept apart air conditioning distribution chamber, be provided with the air conditioning import on the gas collecting chamber barrel, air conditioning distribution chamber with air conditioning import intercommunication, the end fixing of interior heat exchange tube sets up float on the head tube sheet.
Preferably, an elbow is arranged on the floating head end enclosure and communicated with the cold air inlet.
Preferably, the gas collection cavity barrel is provided with a hot gas outlet, and the hot gas outlet is communicated with the hot gas collection chamber.
Preferably, the cylinder body is provided with a hot gas inlet, and the hot gas inlet is communicated with the heat exchange chamber.
Preferably, the lower end enclosure is provided with a cold air outlet which is communicated with the cold air collection chamber.
Compared with the prior art, the utility model has the beneficial effects that: the utility model thoroughly eliminates the thermal stress among the barrel, the outer sleeve and the inner heat exchange tube, improves the running safety and stability of the sleeve type heat exchanger and effectively avoids the leakage defects of the heat exchange tube, the tube plate and the like caused by the thermal stress; 2, the hot gas flows at high speed through the annular gap between the outer sleeve and the inner heat exchange tube, so that the fluid is easy to realize a turbulent flow state, the heat transfer coefficient of the hot gas is improved, and the heat exchange effect between cold and hot media is effectively improved; and 3, an external baffle plate is omitted, so that the manufacturing difficulty is reduced.
Drawings
Fig. 1 is a structural view of the tube-in-tube shell-and-tube heat exchanger.
The figures in the drawings represent:
1, sealing an end socket; 2-hot gas collection chamber; 3-hot gas outlet; 4-bending the pipe; 5-a cold air inlet; 6-floating head sealing head; 7-a cold air distribution chamber; 8-floating head tube plate; 9-gas collecting cavity cylinder; 10-an upper tube plate; 11-hot gas inlet; 12-a cylinder body; 13-outer sleeve; 14-inner heat exchange tubes; 15-lower tube sheet; 16-lower end enclosure; 17-cold air collection chamber; 18-cold air outlet.
Detailed Description
The described and additional features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
As shown in fig. 1, fig. 1 is a structural view of the tube-in-tube shell-and-tube heat exchanger. The casing-in-pipe shell-and-tube heat exchanger comprises a shell, an upper tube plate 10 and a lower tube plate 15 are fixedly arranged in the shell, the upper tube plate 10 and the lower tube plate 15 divide the inner part of the shell into a hot air collection chamber 2, a heat exchange chamber and a cold air collection chamber 17 which are arranged from top to bottom in sequence, a cold air distribution chamber 7 is further arranged in the hot air collection chamber 2 in an isolated manner, the upper end of an inner heat exchange tube 14 is communicated with the cold air distribution chamber 7, the lower end of the inner heat exchange tube is fixedly arranged on the lower tube plate 15 and is communicated with the cold air collection chamber 17, the upper end of an outer sleeve 13 is fixedly arranged on the upper tube plate 10 and is communicated with the hot air collection chamber 2, the lower end of the outer sleeve is arranged in the heat exchange chamber, and the outer sleeve 13 with interior heat exchange tube 14 one-to-one sets up, outer sleeve 13 cover is established and is corresponded interior heat exchange tube 14 is outside, outer sleeve 13 with be provided with the clearance between the interior heat exchange tube 14.
Preferably, the outer sleeve 13 and the corresponding inner heat exchange tube 14 are coaxially arranged.
The shell, the outer sleeve 13 and the inner heat exchange tube 14 can deform by heat and move relatively to eliminate thermal stress, so that the condition that the thermal stress cannot be eliminated completely due to the fact that two ends of the heat exchange tube are fixedly welded on corresponding tube plates in the prior art is avoided, an expansion joint of the shell is omitted, and the pressure is higher than 10MPa, and the temperature difference of cold and hot media is higher than 100 ℃ under any working condition.
Specifically, the shell comprises an upper end enclosure 1, a cylinder 12, a gas collection cavity cylinder 9 and a lower end enclosure 16, wherein the upper end enclosure 1 is fixedly arranged at the upper end of the gas collection cavity cylinder 9, the lower end of the gas collection cavity cylinder 9 is hermetically connected with the upper end of the cylinder 12 through an upper tube plate 10, and the lower end of the cylinder 12 is hermetically connected with the lower end enclosure 16 through a lower tube plate 15.
Be provided with in the steam collection chamber 2 and float first head 6, float first head tube sheet 8, thereby float first head tube sheet 8 with float 6 fixed connection of head inside form with the steam collection chamber 2 is kept apart air conditioning distribution chamber 7, be provided with air conditioning import 5 on the gas collection chamber barrel 9, air conditioning distribution chamber 7 with air conditioning import 5 intercommunication, the tip of interior heat exchange tube 14 is fixed to be set up float on the first tube sheet 8, thereby realize interior heat exchange tube 14 with the intercommunication of air conditioning distribution chamber 7.
Preferably, an elbow 4 is arranged on the floating head end enclosure 6, and the elbow 4 is communicated with the cold air inlet 5, so that the cold air distribution chamber 7 is communicated with the cold air inlet 5.
Preferably, the gas collecting cavity cylinder 9 is provided with a hot gas outlet 3, and the hot gas outlet 3 is communicated with the hot gas collecting cavity 2.
Preferably, the cylinder 12 is provided with a hot gas inlet 11, and the hot gas inlet 11 is communicated with the heat exchange chamber.
Preferably, a cold air outlet 18 is arranged on the lower end enclosure 16, and the cold air outlet 18 is communicated with the cold air collection chamber 17.
The cylinder 12 is connected with the upper tube plate 10 and the lower tube plate 15, only one end of the outer sleeve 13 is connected with the upper tube plate 10, and the other end is freely stretched and contracted when heated; the outer sleeve 13 is sleeved outside the inner heat exchange tube 14, and hot gas exchanges heat with cold gas in the inner heat exchange tube 14 through an annular gap between the hot gas and the inner heat exchange tube; the lower end of the inner heat exchange tube 14 is connected with the lower tube plate 15, the upper end of the inner heat exchange tube is connected with the floating head tube plate 8, the floating head tube plate 8 is connected with the elbow 4, the cold air inlet 5 and the floating head end socket 6 to form the cold air distribution chamber 7, the lower tube plate 15 is a supporting point, and the generated stress is eliminated through the elbow 4; the upper end enclosure 1, the gas collection tank barrel 9, the upper tube plate 10, the floating head end enclosure 6 and the floating head tube plate 8 form the hot gas collection chamber 2; the lower tube plate 15 and the lower end enclosure 16 form the cold air collection chamber 17.
The method for hydrogenation reaction by using the reactor comprises the following steps:
the cold air enters the cold air distribution chamber 7 through the cold air inlet 5, enters the inner heat exchange tubes 14 in the cold air distribution chamber 7 respectively, exchanges heat with the heat medium outside the tubes, and flows out through the cold air outlet 18 after being collected by the cold air collection chamber 17.
The lower tube plate 5 is a fulcrum, and the stress generated by the inner heat exchange tube 14, the floating head end socket 6 and the floating head tube plate 8 is completely eliminated through the elbow 4.
Hot gas enters the shell side from the hot gas inlet 11, and the relative stress between the cylinder 12 and the outer sleeve 13 is completely eliminated by the outer sleeve 13.
Hot gas enters the shell side from the hot gas inlet 11, enters the annular gap between the outer sleeve 13 and the inner heat exchange tube 14, exchanges heat with cold gas in the inner heat exchange tube 14, then is collected to the hot gas collection chamber 2, and flows out from the hot gas outlet 3.
The utility model is suitable for the steam-passing gas in the ammonia synthesis system, the pressure between the steam-passing gas and the steam is more than 11MPa, and the temperature difference of the cold medium and the hot medium is more than 100 ℃.
The foregoing is illustrative of the preferred embodiments of the present invention, which is set forth only, and not to be taken as limiting the utility model. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (8)
1. The utility model provides a bushing type shell and tube heat exchanger, its characterized in that, includes the casing, the casing internal fixation is provided with tube sheet and lower tube sheet, go up the tube sheet with lower tube sheet will the casing internal part separates for hot collection chamber, heat transfer chamber and the air conditioning collection chamber that from top to bottom set gradually, still keep apart in the hot collection chamber and be provided with the air conditioning distribution chamber, the upper end of interior heat exchange tube with air conditioning distribution chamber intercommunication, the lower extreme is fixed to be set up down on the tube sheet and with air conditioning collection chamber intercommunication, the upper end of outer tube is fixed to be set up go up on the tube sheet and with hot collection chamber intercommunication, the lower extreme sets up in the heat transfer chamber, just the outer tube with interior heat exchange tube one-to-one sets up, the outer tube cover is established correspondingly interior heat exchange tube outside, the outer tube with be provided with the clearance between the interior heat exchange tube.
2. A tube-in-tube shell and tube heat exchanger as claimed in claim 1, wherein said outer sleeve and said corresponding inner heat exchange tube are coaxially disposed.
3. A tube-in-tube shell and tube heat exchanger as recited in claim 1, wherein said housing comprises an upper head, a tube body, a gas collecting chamber tube body, and a lower head, said upper head is fixedly disposed at the upper end of said gas collecting chamber tube body, the lower end of said gas collecting chamber tube body is hermetically connected with the upper end of said tube body through said upper tube plate, and the lower end of said tube body is hermetically connected with said lower head through said lower tube plate.
4. A tube-in-tube shell and tube heat exchanger as recited in claim 3 wherein a floating head end plate and a floating head tube plate are disposed in said hot gas collection chamber, said floating head tube plate and said floating head end plate are fixedly connected to form said cold gas distribution chamber therein isolated from said hot gas collection chamber, said gas collection chamber cylinder is provided with a cold gas inlet, said cold gas distribution chamber is communicated with said cold gas inlet, and the end of said inner heat exchange tube is fixedly disposed on said floating head tube plate.
5. A tube-in-tube shell-and-tube heat exchanger as claimed in claim 4, wherein an elbow is provided on said floating head, said elbow being in communication with said cold air inlet.
6. A tube-in-tube shell and tube heat exchanger as recited in claim 3 wherein said vapor collection chamber barrel is provided with a hot gas outlet, said hot gas outlet communicating with said hot gas collection chamber.
7. A tube-in-tube shell and tube heat exchanger as claimed in claim 3, wherein said barrel is provided with a hot gas inlet, said hot gas inlet communicating with said heat exchange chamber.
8. A tube-in-tube shell and tube heat exchanger as recited in claim 3 wherein said bottom head has a cold air outlet disposed therein, said cold air outlet communicating with said cold air plenum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123198955.7U CN216558422U (en) | 2021-12-17 | 2021-12-17 | Sleeve pipe type shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123198955.7U CN216558422U (en) | 2021-12-17 | 2021-12-17 | Sleeve pipe type shell-and-tube heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN216558422U true CN216558422U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123198955.7U Active CN216558422U (en) | 2021-12-17 | 2021-12-17 | Sleeve pipe type shell-and-tube heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892846A (en) * | 2023-09-07 | 2023-10-17 | 山东翔天重工科技有限公司 | Heat exchanger |
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2021
- 2021-12-17 CN CN202123198955.7U patent/CN216558422U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116892846A (en) * | 2023-09-07 | 2023-10-17 | 山东翔天重工科技有限公司 | Heat exchanger |
| CN116892846B (en) * | 2023-09-07 | 2023-11-17 | 山东翔天重工科技有限公司 | Heat exchanger |
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