CN211289537U - Metal corrugated pipe - Google Patents
Metal corrugated pipe Download PDFInfo
- Publication number
- CN211289537U CN211289537U CN201922381429.0U CN201922381429U CN211289537U CN 211289537 U CN211289537 U CN 211289537U CN 201922381429 U CN201922381429 U CN 201922381429U CN 211289537 U CN211289537 U CN 211289537U
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- end plate
- corrugated pipe
- transition
- diaphragm
- pipe section
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Abstract
The utility model discloses a corrugated metal pipe relates to a bellows technical field, include: end plate metalwork, bellows section and transition diaphragm, bellows section both ends respectively with the transition diaphragm reaches the welding of end plate metalwork, the transition diaphragm with rather than the welded end plate metalwork material is the same, the utility model discloses a corrugated metal pipe has increased the transition diaphragm between bellows section and end plate metalwork, the transition diaphragm is the same with the material of end plate metalwork, and welding performance between the two is better, and although the transition diaphragm is different with bellows section diaphragm material, but thickness equals or is close, and the heat conductivity difference is not big, and welding quality between them is also higher, and then can guarantee corrugated metal pipe's welding quality, improves joint strength between bellows section and the end plate metalwork, extension product life.
Description
Technical Field
The utility model relates to a bellows technical field especially relates to a corrugated metal pipe.
Background
The corrugated pipe sections which are formed by alternately welding the pre-formed circular ring type metal diaphragm on the inner circle and the outer circle are called as welded metal corrugated pipe sections. Generally, two ends of a welded metal corrugated pipe section need to be welded with an end plate metal piece respectively to form a complete welded metal corrugated pipe product.
When the welding metal corrugated pipe section and the end plate metal piece are made of the same material, the weldability between the two pieces is better. However, when the bellows section and the end plate metal member are made of different alloys (for example, the bellows section is made of precipitation strengthening type nickel-based wrought superalloy Inconel718, and the end plate metal member is made of austenitic stainless steel 316L), because the welding performance of the two metals is different, and when the diaphragm thickness of the bellows section is thin and the volume of the end plate metal member is large, the thermal conductivity difference between the two metals is large, the diaphragm on the side of the bellows section is often burnt excessively during joint welding, and the side of the end plate metal member is not enough molten, so that the joint welding defects of the bellows section and the end plate metal member occur seriously, and further the welding quality is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a corrugated metal pipe to solve the problem that above-mentioned prior art exists, improve corrugated metal pipe's welding quality, improve the joint strength between corrugated pipe section and the end plate metalwork, extension product life.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a corrugated metal pipe, include: the corrugated pipe section is welded with the transition diaphragm and the end plate metal piece respectively, and the material of the transition diaphragm is the same as that of the end plate metal piece welded with the transition diaphragm.
Preferably, the thickness of the transition membrane is 1-2.5 times of that of the bellows section membrane.
Preferably, the wave shape of the transition diaphragm is identical to the wave shape of the bellows section diaphragm.
Preferably, the number of the transition membranes welded to each end of the bellows segment is one or two.
Preferably, the end plate metal member is a flange.
Preferably, the outer circle parts of the two ends of the corrugated pipe section are respectively welded with the outer circle part of the transition diaphragm and the outer circle part of the end plate metal piece, and the inner circle parts of the two ends of the corrugated pipe section are not welded with the inner circle part of the transition diaphragm.
Preferably, the inner circle parts at the two ends of the corrugated pipe section are respectively welded with the inner circle parts of the transition diaphragm, and then the outer circle parts at the two ends of the corrugated pipe section are respectively welded with the outer circle parts of the transition diaphragm and the outer circle parts of the end plate metal piece.
Preferably, the corrugated pipe section is made of precipitation strengthening type nickel-based deformation high-temperature alloy, and the end plate metal piece and the transition diaphragm are made of stainless steel.
The utility model discloses for prior art gain following technological effect:
the utility model provides a pair of corrugated metal pipe has increased transition diaphragm between bellows section and end plate metalwork, and transition diaphragm is the same with the material of end plate metalwork, and welding quality between the two is good, and transition diaphragm is different with bellows section diaphragm material, but thickness equals or is close, and the heat conductivity difference is not big, and welding quality between them is also good, and then can guarantee corrugated metal pipe's welding quality, effectively strengthens joint strength, extension corrugated metal pipe's life.
Furthermore, the transition diaphragm and the corrugated pipe section diaphragm have the same waveform completely, so that the transition diaphragm and the corrugated pipe section diaphragm are tightly attached, the heat conductivity of the corrugated pipe section can be greatly improved, the heat conductivity difference between the corrugated pipe section and an end plate metal piece is reduced, and the welding quality of the metal corrugated pipe is further improved.
Furthermore, the heat conductivity difference between the corrugated pipe section and the end plate metal piece is further reduced by adjusting the number and thickness of the transition membranes welded at each end of the corrugated pipe section, so that the welding quality of the metal corrugated pipe is improved.
Furthermore, the outer circle parts of the two ends of the corrugated pipe section are respectively welded with the outer circle part of the transition diaphragm and the outer circle part of the end plate metal piece, and the inner circle parts of the two ends of the corrugated pipe section are not welded with the inner circle part of the transition diaphragm, so that the metal corrugated pipe has few welding processes and high production efficiency.
Furthermore, before the outer circle parts at the two ends of the corrugated pipe section are respectively welded with the outer circle parts of the transition diaphragm and the outer circle parts of the end plate metal piece, the inner circle parts at the two ends of the corrugated pipe section are respectively welded with the inner circle parts of the transition diaphragm, so that the attaching degree of the transition diaphragm and the corrugated pipe section diaphragm can be further improved, the heat conductivity difference between the corrugated pipe section and the end plate metal piece is reduced, the welding quality of the metal corrugated pipe is improved, the connection strength between the corrugated pipe section and the end plate metal piece is improved, and the service life of a product is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the inner circle portion of the transition diaphragm and the inner circle portion of the bellows section of the metal bellows provided by the present invention without welding;
FIG. 2 is a schematic view of the welding of the inner circle portion of the transition diaphragm of the metal bellows with the inner circle portion of the bellows section according to the present invention;
in the figure: 1-end plate metal, 2-corrugated pipe section, 3-transition diaphragm, 4-corrugated pipe section outer circle part, 5-transition diaphragm outer circle part, 6-corrugated pipe section inner circle part and 7-transition diaphragm inner circle part.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a corrugated metal pipe to solve the problem that prior art exists, improve corrugated metal pipe's welding quality.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Example one
In this embodiment, as shown in fig. 1, the metal bellows includes: end plate metalwork 1, bellows section 2 and transition diaphragm 3, bellows section both ends excircle part 4 welds with transition diaphragm excircle part 5 and end plate metalwork 1 excircle part, transition diaphragm 3 is the same with its welded end plate metalwork 1 material, welding quality between the two is good, although transition diaphragm 3 is different with bellows section 2 diaphragms material, but thickness equals or is close, the heat conductivity difference is not big, welding quality between them is also good, and then can guarantee corrugated metal pipe's welding quality, improve the joint strength between bellows section 2 and the end plate metalwork 1, extension product life.
The thickness of the transition membrane 3 is 1-2.5 times of the thickness of the membrane of the corrugated pipe section 2, and the heat conductivity difference between the corrugated pipe section 2 and the end plate metal piece 1 is further reduced by adjusting the thickness of the transition membrane 3 welded at each end of the corrugated pipe section 2, so that the welding quality of the metal corrugated pipe is improved.
The waveform of the transition diaphragm 3 is completely consistent with that of the diaphragm of the corrugated pipe section 2, so that the transition diaphragm is tightly attached to the diaphragm of the corrugated pipe section, the heat conductivity of the corrugated pipe section 2 can be greatly improved, the heat conductivity difference between the corrugated pipe section 2 and the end plate metal piece 1 is reduced, and the welding quality of the metal corrugated pipe is further improved.
The number of the transition membranes 3 welded at each end of the corrugated pipe section 2 is one or two, and the heat conductivity difference between the corrugated pipe section 2 and the end plate metal piece 1 is further reduced by adjusting the number of the transition membranes 3 welded at each end of the corrugated pipe section 2, so that the welding quality of the metal corrugated pipe is improved.
The end plate metal 1 is a flange.
The outer circle parts 4 at the two ends of the corrugated pipe section are welded with the outer circle parts 5 of the transition diaphragm and the outer circle parts of the end plate metal piece 1, and the inner circle parts 6 at the two ends of the corrugated pipe section are not welded with the inner circle parts 7 of the transition diaphragm respectively, so that the metal corrugated pipe has few welding processes and high production efficiency.
The corrugated pipe section 2 is made of precipitation strengthening type nickel-based wrought superalloy, preferably precipitation strengthening type nickel-based wrought superalloy Inconel718, and the end plate metal piece 1 and the transition membrane 3 are made of stainless steel, preferably austenitic stainless steel, and more preferably austenitic stainless steel 316L.
Example two
The present embodiment provides a metal corrugated pipe, as shown in fig. 2, the difference between the present embodiment and the first embodiment is: circle part 6 welds with interior circle part 7 of transition diaphragm respectively in bellows section both ends, again with bellows section both ends excircle part 4 and transition diaphragm excircle part 5 and end plate metalwork 1 excircle part weld, can further improve the laminating degree of transition diaphragm 3 and 2 diaphragms of bellows section, reduce the heat conductivity difference of bellows section 2 and end plate metalwork 1, improve the welding quality of corrugated metal pipe, improve the joint strength between bellows section 2 and the end plate metalwork 1, prolong product life.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. A metal bellows, characterized by: the method comprises the following steps: the corrugated pipe section is welded with the transition diaphragm and the end plate metal piece respectively, and the material of the transition diaphragm is the same as that of the end plate metal piece welded with the transition diaphragm.
2. The metal bellows of claim 1, wherein: the thickness of the transition membrane is 1-2.5 times of that of the corrugated pipe section membrane.
3. The metal bellows of claim 1, wherein: the wave shape of the transition membrane is completely consistent with that of the bellows section membrane.
4. The metal bellows of claim 1, wherein: the number of the transition membranes welded at each end of the corrugated pipe section is one or two.
5. The metal bellows of claim 1, wherein: the end plate metal piece is a flange.
6. The metal bellows of claim 1, wherein: and respectively welding the outer circle parts at the two ends of the corrugated pipe section with the outer circle part of the transition diaphragm and the outer circle part of the end plate metal piece, and respectively welding the inner circle parts at the two ends of the corrugated pipe section with the inner circle part of the transition diaphragm.
7. The metal bellows of claim 1, wherein: and respectively welding inner circle parts at two ends of the corrugated pipe section with the inner circle part of the transition diaphragm, and respectively welding outer circle parts at two ends of the corrugated pipe section with the outer circle part of the transition diaphragm and the outer circle part of the end plate metal piece.
8. The metal bellows of claim 1, wherein: the corrugated pipe section is made of precipitation strengthening type nickel-based deformation high-temperature alloy, and the end plate metal piece and the transition diaphragm are made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922381429.0U CN211289537U (en) | 2019-12-26 | 2019-12-26 | Metal corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922381429.0U CN211289537U (en) | 2019-12-26 | 2019-12-26 | Metal corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211289537U true CN211289537U (en) | 2020-08-18 |
Family
ID=72019368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922381429.0U Active CN211289537U (en) | 2019-12-26 | 2019-12-26 | Metal corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211289537U (en) |
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2019
- 2019-12-26 CN CN201922381429.0U patent/CN211289537U/en active Active
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