CN202605751U - Connecting structure for cylinder and pipe plate in pipe falling film evaporator - Google Patents
Connecting structure for cylinder and pipe plate in pipe falling film evaporator Download PDFInfo
- Publication number
- CN202605751U CN202605751U CN 201220225014 CN201220225014U CN202605751U CN 202605751 U CN202605751 U CN 202605751U CN 201220225014 CN201220225014 CN 201220225014 CN 201220225014 U CN201220225014 U CN 201220225014U CN 202605751 U CN202605751 U CN 202605751U
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- CN
- China
- Prior art keywords
- cylindrical shell
- tube sheet
- pipe
- cylinder
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a connecting structure for a cylinder and a pipe plate in a pipe falling film evaporator. The connecting structure comprises the cylinder and the pipe plate, a cylinder nipple is welded between the cylinder and the pipe plate, and the cylinder nipple is internally and externally welded with the pipe plate. The utility model has the advantages that the connecting structure is simple, stress corrosion can be effectively reduced, pore deformation can be prevented, and installation of a heat exchange pipe is greatly facilitated.
Description
Technical field
The utility model relates to the tube-type down-flow evaporator field, refers more particularly to cylindrical shell and the syndeton of tube sheet in the tube-type down-flow evaporator.
Background technology
Tube-type down-flow evaporator is widely used in more production fields such as papermaking, food, pharmacy, sugaring, and it mainly acts on is to be used for evaporating moisture content unnecessary in the technological process of production.The cylindrical shell of the tube-type down-flow evaporator that uses at present is all longer, and cylindrical shell has some shell rings to be welded, and is firm through directly being welded to connect between cylindrical shell and the tube sheet.But because cylindrical shell is longer, can only weld in the outside between cylindrical shell and the tube sheet, the inboard of cylindrical shell and tube sheet then is difficult to weld; And because bulky cylindrical shell and tube sheet can't carry out whole stress-removal heat treatment; Can only carry out local stress-removal heat treatment, so the weld stress between cylindrical shell and the tube sheet is difficult to eliminate, adds the difference of the thickness etc. of the material between cylindrical shell and the tube sheet in addition; Shrink inconsistent between cylindrical shell and the tube sheet; Cause weld cracking easily like this, thereby cause that alkali lye is revealed in the cylindrical shell, cause stress corrosion; In addition owing to need offer pore on the tube sheet; For easy to process; Pore on the tube sheet is wanted completion of processing before the welding of tube sheet and cylindrical shell, but when the weld seam between tube sheet and the cylindrical shell being done local stress-removal heat treatment, is very easy to cause the pore distortion; Cause the heat exchanger tube perforation of when assembling very inconvenient, be out of shape serious position heat exchanger tube even can't pass.
The utility model content
The problem that the utility model need solve be: provide a kind of simple in structure, can reduce stress corrosion, prevent pore distortion, the cylindrical shell in the tube-type down-flow evaporator of convenient greatly processing and the syndeton of tube sheet.
For addressing the above problem; The technical scheme that the utility model adopts is: the cylindrical shell in the tube-type down-flow evaporator and the syndeton of tube sheet; Comprise: cylindrical shell and tube sheet, welding is provided with the cylindrical shell pipe nipple between cylindrical shell and tube sheet, external welding in described cylindrical shell pipe nipple and the tube sheet.
Further, the cylindrical shell in the aforesaid tube-type down-flow evaporator and the syndeton of tube sheet, wherein, described cylindrical shell pipe nipple height is 300mm.
The utility model has the advantages that: simple in structure, can effectively reduce stress corrosion, and prevent the pore distortion, also greatly facilitate the installation of heat exchanger tube simultaneously.
Description of drawings
Fig. 1 is cylindrical shell and the syndeton of tube sheet in the described tube-type down-flow evaporator of the utility model
Sketch map.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify.
As shown in Figure 1; The cylindrical shell in the tube-type down-flow evaporator and the syndeton of tube sheet comprise: cylindrical shell 1 and tube sheet 2, and welding is provided with cylindrical shell pipe nipple 3 between cylindrical shell 1 and tube sheet 2; Described cylindrical shell pipe nipple 3 and tube sheet 1 interior external welding, the height of described cylindrical shell pipe nipple 3 is 300mm.
Add man-hour; End and tube sheet 2 interior external weldings with cylindrical shell pipe nipple 3 earlier finish; Because the volume of cylindrical shell pipe nipple 3 is less; So just have ready conditions the cylindrical shell pipe nipple 3 that is welded as a whole is carried out stress-removal heat treatment with tube sheet 2, carry out the pore processing on the tube sheet 2 after stress-removal heat treatment finishes again, last again with the other end and cylindrical shell 1 firm welding of cylindrical shell pipe nipple 3.Cylindrical shell 1 is done stress-removal heat treatment earlier before welding with cylindrical shell pipe nipple 3.
In sum, the utility model is simple in structure, owing to set up cylindrical shell pipe nipple 3; Not only can carry out interior external welding between cylindrical shell pipe nipple 3 and the tube sheet 2, and cylindrical shell pipe nipple 3 can carry out whole stress-removal heat treatment, effective like this weld stress of having eliminated between cylindrical shell pipe nipple 3 and the tube sheet 2 with tube sheet 2; Thereby reduction stress corrosion; And the pore on the tube sheet 2 carries out offering after the stress-removal heat treatment at cylindrical shell pipe nipple 3 and tube sheet 2, so just can not produce the pore distortion, greatly facilitates the installation of heat exchanger tube 4.
Claims (2)
1. the syndeton of cylindrical shell in the tube-type down-flow evaporator and tube sheet, comprising: cylindrical shell and tube sheet is characterized in that: welding is provided with the cylindrical shell pipe nipple between cylindrical shell and tube sheet, the interior external welding of described cylindrical shell pipe nipple and tube sheet.
2. the cylindrical shell in the tube-type down-flow evaporator according to claim 1 and the syndeton of tube sheet is characterized in that: described cylindrical shell pipe nipple height is 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220225014 CN202605751U (en) | 2012-05-18 | 2012-05-18 | Connecting structure for cylinder and pipe plate in pipe falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220225014 CN202605751U (en) | 2012-05-18 | 2012-05-18 | Connecting structure for cylinder and pipe plate in pipe falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202605751U true CN202605751U (en) | 2012-12-19 |
Family
ID=47339485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220225014 Expired - Fee Related CN202605751U (en) | 2012-05-18 | 2012-05-18 | Connecting structure for cylinder and pipe plate in pipe falling film evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202605751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698447A (en) * | 2012-05-18 | 2012-10-03 | 张家港化工机械股份有限公司 | Connection structure for cylinder and tube plate of tube-type falling-film evaporator |
-
2012
- 2012-05-18 CN CN 201220225014 patent/CN202605751U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698447A (en) * | 2012-05-18 | 2012-10-03 | 张家港化工机械股份有限公司 | Connection structure for cylinder and tube plate of tube-type falling-film evaporator |
| CN102698447B (en) * | 2012-05-18 | 2014-07-30 | 张家港化工机械股份有限公司 | Connection structure for cylinder and tube plate of tube-type falling-film evaporator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150518 |
|
| EXPY | Termination of patent right or utility model |