CN215296897U - Heat exchange tube-tube sheet pull-off test auxiliary structure - Google Patents
Heat exchange tube-tube sheet pull-off test auxiliary structure Download PDFInfo
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- CN215296897U CN215296897U CN202023198194.0U CN202023198194U CN215296897U CN 215296897 U CN215296897 U CN 215296897U CN 202023198194 U CN202023198194 U CN 202023198194U CN 215296897 U CN215296897 U CN 215296897U
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Abstract
The utility model relates to a heat exchange tube-tube sheet pull-off test auxiliary structure belongs to heat exchanger detection technical field. The heat exchange tube is connected with the tube plate in a welding, expansion joint or expansion welding combined mode, a heat exchange tube-tube plate pull-off test auxiliary structure is arranged on the heat exchange tube and comprises a through hole and a stop block which are arranged on the tube wall of the heat exchange tube, and the stop block which is used for bearing the pressure applied by a pull-off testing machine is arranged in the through hole; the utility model overcomes the defect that needs the welding atress accessory plate to bring in the original heat exchange tube-tube sheet pull-off test, solved the problem that heat exchange tube-tube sheet pull-off test load structure, just the utility model discloses low cost, simple structure, convenient practicality.
Description
Technical Field
The utility model relates to a heat exchange tube-tube sheet pull-off test auxiliary structure belongs to heat exchanger detection technical field.
Background
In the chemical pressure vessel industry, a shell-and-tube heat exchanger is one of the commonly used chemical equipment types, and is widely used in various fields of petrochemical industry. The connection part of the tube plate and the heat exchange tube is most prone to failure, the connection quality directly determines the service life of equipment, personal safety can be seriously endangered, and quality accidents are caused. The connection mode of the tube plate and the heat exchange tube is generally a mode of expansion joint, welding or welding expansion combination, wherein the measurement of the pull-out force is an important index of the combination strength of the tube plate and the heat exchange tube, the combination strength of the tube plate and the heat exchange tube must meet the standard requirement, otherwise, the leakage of a medium is caused due to the insufficient strength, and safety accidents are caused. In the prior art, the bonding strength between the heat exchange tube and the tube plate is often tested through a pull-out test of the heat exchange tube and the tube plate; before the test is started, an auxiliary plate is generally welded at the end, away from the tube plate, of the heat exchange tube for bearing the pressure applied by a pull-off tester; however, because the tube wall of the heat exchange tube is thin, the auxiliary plate and the heat exchange tube are often welded firmly, and the auxiliary plate is already separated from the heat exchange tube and the tube plate without being pulled off in the test, which causes the test failure. In addition, the auxiliary plate needs to be made of the same or similar material as the heat exchange tube so as to be beneficial to welding, and the test cost is increased. Therefore, a simple, convenient and low-cost auxiliary test device is needed for completing the heat exchange tube-tube plate pull-out test by those skilled in the art.
Disclosure of Invention
The utility model aims at solving the technical problem that how to complete the heat exchange tube-tube plate pull-off test through a simple, convenient and low-cost auxiliary test device.
In order to solve the above problems, the technical solution adopted by the present invention is to provide a heat exchange tube-tube plate pull-off test auxiliary structure, wherein the heat exchange tube is connected with the tube plate by welding, expansion joint or expansion welding, and the heat exchange tube is provided with the heat exchange tube-tube plate pull-off test auxiliary structure; comprises a through hole and a stop block arranged on the wall of the heat exchange tube; a stop block is arranged in the through hole.
Preferably, the heat exchange tube wall is provided with a square first through hole, and a strip-shaped check block is arranged in the first through hole
Preferably, a central connecting line arranged between the two corresponding square first through holes on the tube wall of the heat exchange tube is vertically intersected with the central axis of the heat exchange tube.
Preferably, a square second through hole is formed in the tube wall of the heat exchange tube, and a strip-shaped stop block is arranged in the second through hole.
Preferably, a central connecting line arranged between two corresponding square second through holes on the tube wall of the heat exchange tube is perpendicular to the central axis of the heat exchange tube, and the central connecting line of the second through holes is perpendicular to the two-line projection of the central connecting line of the first through holes on a plane perpendicular to the central axis of the heat exchange tube.
Preferably, a stress transmission block is arranged between the bar-shaped stop block arranged in the first through hole and the bar-shaped stop block arranged in the second through hole.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model has simple structure, convenience and practicability; the defect caused by welding the stress auxiliary plate in the original heat exchange tube-tube plate pull-off test is overcome, the problem of the load-bearing structure of the heat exchange tube-tube plate pull-off test is solved, and the utility model has low cost.
Drawings
FIG. 1 is a schematic view of the component structure of the present invention;
the arrow direction in the figure is the direction of the pressure applied by the pull-off tester.
Reference numerals: 1. a tube sheet; 2. a heat exchange pipe; 3. a first through hole; 4. a second through hole; 5. a stress transmission block.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 1, the utility model provides a heat exchange tube-tube plate pull-off test auxiliary structure, wherein a heat exchange tube 2 is connected with a tube plate 1 in an expanded manner, and the heat exchange tube 2 is provided with the heat exchange tube-tube plate pull-off test auxiliary structure; comprises a through hole and a stop block arranged on the tube wall of a heat exchange tube 2; a stop block is arranged in the through hole. The heat exchange tube wall is provided with a first square through hole 3, and a strip-shaped check block is arranged in the first through hole 3. A central connecting line arranged between the two corresponding square first through holes 3 on the tube wall of the heat exchange tube is vertically intersected with the central axis of the heat exchange tube 2. The pipe wall of the heat exchange pipe is provided with a square second through hole 4, and a strip-shaped check block is arranged in the second through hole 4. A central connecting line arranged between two corresponding square second through holes 4 on the tube wall of the heat exchange tube 2 is vertically intersected with the central axis of the heat exchange tube 2, and the central connecting line of the second through holes 4 is mutually vertical to the two-line projection of the central connecting line of the first through hole 3 on a plane vertical to the central axis of the heat exchange tube 2; a stress conduction block 5 is arranged between the bar-shaped stop block arranged in the first through hole 3 and the bar-shaped stop block arranged in the second through hole 4.
The utility model discloses a use method:
1. and when the heat exchange tube-tube plate is pulled out, inserting the strip-shaped check block into the first through hole, applying pressure on the strip-shaped check block by using a pull-out testing machine until the heat exchange tube-tube plate is pulled out, and measuring the bonding strength between the heat exchange tube and the tube plate.
2. And if the pulling-out force is relatively large, inserting strip-shaped check blocks into the first through hole and the second through hole, connecting a stress conduction block 5 between the two check blocks, starting a pulling-out testing machine to apply pressure to the strip-shaped check blocks until the heat exchange tube-tube plate is pulled out, and measuring the bonding strength between the heat exchange tube and the tube plate.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the present invention in any way and in any way, and it should be understood that modifications and additions may be made by those skilled in the art without departing from the scope of the present invention. Those skilled in the art can make various changes, modifications and evolutions equivalent to those made by the above-disclosed technical content without departing from the spirit and scope of the present invention, and all such changes, modifications and evolutions are equivalent embodiments of the present invention; meanwhile, any changes, modifications and evolutions of equivalent changes to the above embodiments according to the actual technology of the present invention are also within the scope of the technical solution of the present invention.
Claims (6)
1. A heat exchange tube-tube plate pull-off test auxiliary structure is characterized in that a heat exchange tube is connected with a tube plate, and the heat exchange tube is provided with the heat exchange tube-tube plate pull-off test auxiliary structure; the method is characterized in that: comprises a through hole and a stop block arranged on the wall of the heat exchange tube; a stop block is arranged in the through hole.
2. The heat exchange tube-tube plate pull-off test auxiliary structure as recited in claim 1, wherein: the heat exchange tube is characterized in that a square first through hole is formed in the wall of the heat exchange tube, and a strip-shaped check block is arranged in the first through hole.
3. The heat exchange tube-tube plate pull-off test auxiliary structure as recited in claim 2, wherein: and a central connecting line arranged between the two corresponding square first through holes on the tube wall of the heat exchange tube is vertically intersected with the central axis of the heat exchange tube.
4. The heat exchange tube-tube plate pull-off test auxiliary structure as recited in claim 3, wherein: the heat exchange tube is characterized in that a square second through hole is formed in the tube wall of the heat exchange tube, and a strip-shaped check block is arranged in the second through hole.
5. The heat exchange tube-tube plate pull-off test auxiliary structure as recited in claim 4, wherein: and the central connecting line arranged between the two corresponding square second through holes on the tube wall of the heat exchange tube is vertically intersected with the central axis of the heat exchange tube, and the central connecting line of the second through holes is mutually vertical to the two-line projection of the central connecting line of the first through holes on a plane vertical to the central axis of the heat exchange tube.
6. The heat exchange tube-tube plate pull-off test auxiliary structure as recited in claim 5, wherein: and a stress transmission block is arranged between the bar-shaped stop block arranged in the first through hole and the bar-shaped stop block arranged in the second through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023198194.0U CN215296897U (en) | 2020-12-25 | 2020-12-25 | Heat exchange tube-tube sheet pull-off test auxiliary structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023198194.0U CN215296897U (en) | 2020-12-25 | 2020-12-25 | Heat exchange tube-tube sheet pull-off test auxiliary structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215296897U true CN215296897U (en) | 2021-12-24 |
Family
ID=79528120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023198194.0U Active CN215296897U (en) | 2020-12-25 | 2020-12-25 | Heat exchange tube-tube sheet pull-off test auxiliary structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215296897U (en) |
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2020
- 2020-12-25 CN CN202023198194.0U patent/CN215296897U/en active Active
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