CN214371976U - Dovetail groove sealing locking expansion structure - Google Patents
Dovetail groove sealing locking expansion structure Download PDFInfo
- Publication number
- CN214371976U CN214371976U CN202023209672.3U CN202023209672U CN214371976U CN 214371976 U CN214371976 U CN 214371976U CN 202023209672 U CN202023209672 U CN 202023209672U CN 214371976 U CN214371976 U CN 214371976U
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- heat exchange
- tube
- pipe
- plate
- dovetail
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Abstract
The utility model discloses a dovetail seals locking bloated structure. Comprises a tube plate, a heat exchange tube and a locking groove; an opening is formed in one side of the tube plate, a guide groove is formed in the opening, the included angle between the guide groove and the horizontal plane is 30 degrees, the heat exchange tube extends to the other side of the tube plate from the opening to the inner side, the middle of the heat exchange tube is attached to the tube plate, one end of the heat exchange tube is welded to the inner side of the tube plate, and the included angle between the welding position and the horizontal plane is 45 degrees; the pipe plate is provided with a locking groove, the tail end of the locking groove is of a dovetail groove structure, two base angles in the dovetail groove structure are 70 degrees, the locking groove is perpendicular to the heat exchange pipe, the dovetail groove structure is located at the joint of the heat exchange pipe and the pipe plate, and the heat exchange pipe expands into the dovetail groove structure in a pipe expanding mode. The utility model discloses a tight mode of expanding combines together with the welding, has improved the joint strength between heat transfer pipe and tube sheet, and it is difficult for receiving the vibration not hard up, has improved the life of heat exchanger.
Description
The technical field is as follows:
the utility model belongs to the technical field of the heat exchanger production, in particular to dovetail seals locking bloated structure.
Background art:
the heat exchange tube is welded insecurely among the existing shell and tube heat exchanger, and in the use process, the welding position of the heat exchange tube is easy to loosen and fall off due to vibration, so that the heat exchanger is damaged.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
The utility model has the following contents:
an object of the utility model is to provide a dovetail seals locking bloated structure to overcome the defect among the above-mentioned prior art.
In order to achieve the purpose, the utility model provides a dovetail groove sealing locking expansion structure, which comprises a tube plate, a heat exchange tube and a locking groove; an opening is formed in one side of the tube plate, a guide groove is formed in the opening, the included angle between the guide groove and the horizontal plane is 30 degrees, the heat exchange tube extends to the other side of the tube plate from the opening to the inner side, the middle of the heat exchange tube is attached to the tube plate, one end of the heat exchange tube is welded to the inner side of the tube plate, and the included angle between the welding position and the horizontal plane is 45 degrees; the pipe plate is provided with a locking groove, the tail end of the locking groove is of a dovetail groove structure, two base angles in the dovetail groove structure are 70 degrees, the locking groove is perpendicular to the heat exchange pipe, the dovetail groove structure is located at the joint of the heat exchange pipe and the pipe plate, and the heat exchange pipe expands into the dovetail groove structure in a pipe expanding mode.
Compared with the prior art, the utility model discloses following beneficial effect has:
through the combination of the expansion mode and the welding, the connection strength between the heat exchange tubes and the tube plates is improved, the heat exchange tubes are not easy to be loosened by vibration, and the service life of the heat exchanger is prolonged.
Description of the drawings:
FIG. 1 is a schematic view of the dovetail groove sealing and locking structure of the present invention;
the reference signs are: 1-tube plate, 2-heat exchange tube, 3-locking groove, 4-opening, 5-guide groove, 6-welding position and 7-dovetail groove structure.
The specific implementation mode is as follows:
the following detailed description of the embodiments of the present invention is provided, but it should be understood that the scope of the present invention is not limited by the embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1, a dovetail groove sealing and locking expansion structure includes: the device comprises a tube plate 1, a heat exchange tube 2 and a locking groove 3; an opening 4 is formed in one side of the tube plate 1, a guide groove 5 is formed in the position of the opening 4, the included angle between the guide groove 5 and the horizontal plane is 30 degrees, the heat exchange tube 2 penetrates into the tube plate 1 from the opening 4, the heat exchange tube 2 extends inwards to the other side of the tube plate 1, the middle of the heat exchange tube 2 is attached to the tube plate 1, one end of the heat exchange tube 2 is welded to the inner side of the tube plate 1, and the included angle between a welding position 6 and the horizontal plane is 45 degrees; be provided with locking groove 3 on the tube sheet 1, the end of locking groove 3 is dovetail structure 7, two base angles are 70 in the dovetail structure 7, locking groove 3 sets up with heat exchange tube 2 mutually perpendicularly, dovetail structure 7 is located heat exchange tube 2 and tube sheet 1 laminating department, adopt the tube expander to insert in heat exchange tube 2, the tube expander expands heat exchange tube 2 into dovetail structure 7, combine together with the welding through the tight mode of expanding, the joint strength between heat exchange tube 2 and tube sheet 1 has been improved, it is difficult for receiving the vibration not hard up, the life of heat exchanger has been improved.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (1)
1. The utility model provides a dovetail seals locking and expands structure which characterized in that: comprises a tube plate, a heat exchange tube and a locking groove; an opening is formed in one side of the tube plate, a guide groove is formed in the opening, the included angle between the guide groove and the horizontal plane is 30 degrees, the heat exchange tube extends to the other side of the tube plate from the opening to the inner side, the middle of the heat exchange tube is attached to the tube plate, one end of the heat exchange tube is welded to the inner side of the tube plate, and the included angle between the welding position and the horizontal plane is 45 degrees; the pipe plate is provided with a locking groove, the tail end of the locking groove is of a dovetail groove structure, two base angles in the dovetail groove structure are 70 degrees, the locking groove is perpendicular to the heat exchange pipe, the dovetail groove structure is located at the joint of the heat exchange pipe and the pipe plate, and the heat exchange pipe expands into the dovetail groove structure in a pipe expanding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023209672.3U CN214371976U (en) | 2020-12-28 | 2020-12-28 | Dovetail groove sealing locking expansion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023209672.3U CN214371976U (en) | 2020-12-28 | 2020-12-28 | Dovetail groove sealing locking expansion structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214371976U true CN214371976U (en) | 2021-10-08 |
Family
ID=77949007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023209672.3U Active CN214371976U (en) | 2020-12-28 | 2020-12-28 | Dovetail groove sealing locking expansion structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214371976U (en) |
-
2020
- 2020-12-28 CN CN202023209672.3U patent/CN214371976U/en active Active
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