CN213053400U - Zirconium tube and tube plate corner joint welding protection device - Google Patents
Zirconium tube and tube plate corner joint welding protection device Download PDFInfo
- Publication number
- CN213053400U CN213053400U CN202021823663.0U CN202021823663U CN213053400U CN 213053400 U CN213053400 U CN 213053400U CN 202021823663 U CN202021823663 U CN 202021823663U CN 213053400 U CN213053400 U CN 213053400U
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- plug
- zirconium
- inlet pipe
- tube
- pipe
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- 229910052726 zirconium Inorganic materials 0.000 title claims abstract description 40
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000003466 welding Methods 0.000 title claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 16
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model belongs to the technical field of the welding, concretely relates to zirconium pipe and tube sheet corner joint welding protection device. The gas inlet pipe comprises a gas inlet pipe used for introducing inert protective gas, wherein a tail end plug is arranged at the tail end of the gas inlet pipe, a middle plug is sleeved in the middle of the gas inlet pipe, and a gas outlet hole is formed in the gas inlet pipe in the area between the middle plug and the tail end plug; after the tail plug and the middle plug are inserted into the zirconium pipe to be welded, a temporary local protection space is formed by the tail plug and the middle plug. The device can play an effective protection role in the welding process of the zirconium pipe and the pipe plate corner joint, ensure that the inner wall of the zirconium pipe is not oxidized, and meet the welding requirement of the fillet weld.
Description
Technical Field
The utility model belongs to the technical field of the welding, concretely relates to zirconium pipe and tube sheet corner joint welding protection device.
Background
The welded joint of the tube and the tube plate is a key structure in a shell-and-tube heat exchanger, and the quality of welding is particularly important to the service life of equipment. With the steady and healthy development of the chemical energy industry in China, the demand on non-ferrous metal pressure containers is gradually increased, and zirconium materials are widely applied to the industry by virtue of the excellent corrosion resistance.
However, because the property of zirconium is more active, in the welding process of the zirconium pipe and the pipe plate corner joint, the inner wall of the pipe is in a high-temperature state and is very easy to contact with oxygen in the air to generate an oxidation phenomenon, the corrosion resistance of the oxidized inner wall of the pipe can be greatly reduced, and in the operation process of equipment, a medium flowing through the inside of the pipe is easy to corrode the pipe, so that the service life of the equipment is shortened.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide a convenient to use, easy operation's zirconium pipe and tube sheet corner joint welding protection device, it can play effective guard action in the welding process that zirconium pipe and tube sheet corner joint connect, guarantees that the oxidation phenomenon does not take place for the zirconium inside pipe wall, satisfies the welding requirement of fillet weld.
In order to achieve the technical purpose, the utility model adopts the following technical scheme: the welding protection device for the zirconium tube and the tube plate corner joint comprises an air inlet pipe for introducing inert protective gas, wherein the tail end of the air inlet pipe is provided with a tail end plug, the middle part of the air inlet pipe is sleeved with a middle end plug, and an air outlet hole is formed in the air inlet pipe in the area between the middle end plug and the tail end plug; after the tail plug and the middle plug are inserted into a zirconium pipe to be welded, a temporary local protection space is formed by the tail plug and the middle plug, and an inert protective gas introduced from the gas inlet pipe forms a local protection atmosphere in the zirconium pipe.
As a preferred technical scheme, the air outlet holes are provided with a plurality of air outlet holes which are uniformly distributed.
As a preferable technical scheme, a flow equalizing net convenient for equalizing and softening inert shielding gas is coiled and wound on the outer peripheral side of the gas outlet.
As a preferred technical scheme, the flow equalizing net adopts a thin copper wire net.
As an optimal technical scheme, the air inlet pipe, the middle plug and the tail plug are all made of red copper.
As an optimal technical scheme, the air inlet pipe is welded and fixed with the middle plug and the tail plug respectively.
As a preferred technical scheme, the diameter of the excircle of the tail plug is slightly smaller than that of the excircle of the middle plug.
Compared with the prior art, the utility model discloses following beneficial effect has at least: after the tail end plug and the middle end plug are inserted into a zirconium pipe to be welded, a temporary local protection space is formed by the tail end plug and the middle end plug, inert protective gas is introduced from the end of the air inlet pipe, the gas is discharged from the air outlet hole, the inert gas is further equalized and softened through the equalizing net, the inert gas forms a local protection atmosphere inside the pipe, and external air is isolated, so that the inner wall of the pipe is effectively protected in the welding process of the zirconium pipe and the pipe plate corner joint, the effect of preventing oxidation is achieved, the inner wall of the zirconium pipe cannot be bluish, grayed and the like, and the requirements of zirconium material appearance inspection and corrosion resistance are met.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the assembly of a zirconium tube and tube sheet corner joint;
fig. 3 is a schematic perspective view of an embodiment of the present invention;
fig. 4 is a schematic view of a front view structure of the embodiment of the present invention.
In the figure: 1, an air inlet pipe; 2-middle plug; 3-air outlet holes; 4-flow equalization net; 5-tail plug; 6-zirconium tube; 7-a tube plate; 8-welding seam.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
Examples
Referring to fig. 1, the zirconium tube and tube plate corner joint welding protection device comprises an air inlet tube 1, a middle plug 2, an air outlet hole 3, a flow equalizing net 4 and a tail plug 5, wherein the air inlet tube 1 is used for introducing inert protective gas, the air inlet tube 1 penetrates through the middle plug 2 and is inserted into the tail plug 5, and the air inlet tube and the tail plug are fixedly connected in a welding mode; the gas outlet 3 is formed in the gas inlet pipe 1 in the region between the middle plug 2 and the tail plug 5, the gas outlet 3 is provided with a plurality of gas outlets which are evenly distributed, the peripheral side of each gas outlet 3 is wound with a flow equalizing net 4 in a curling mode, and the flow equalizing and softening of inert protective gas are facilitated through the flow equalizing nets.
The air inlet pipe 1, the middle plug 2 and the tail plug 5 are preferably made of red copper. The flow equalizing net 4 is preferably a thin copper wire net.
With reference to fig. 2 to 4, in order to be able to insert the entire protection device quickly into the zirconium pipe 6 to be welded, the outer diameter of the tail plug 5 is preferably slightly smaller than the outer diameter of the middle plug 2.
Referring to fig. 2 to 4, the using method of the present invention is as follows: the method comprises the steps of firstly assembling a zirconium tube 6 to be welded and a tube plate 7 in place, inserting an air inlet tube 1 into the zirconium tube 6, inserting a middle plug 2 and a tail plug 5 into the zirconium tube 6, forming a temporary local protection space by the middle plug 2, the tail plug 5 and the zirconium tube 6, introducing inert protective gas from the end of the air inlet tube 1, discharging the gas from an air outlet 3, further homogenizing and softening the inert gas through a flow equalizing net 4, forming a local protection atmosphere in the zirconium tube 6 by the inert gas, and isolating the external air, so that the inner wall of the tube is effectively protected and prevented from being oxidized in the process of welding (forming a welding line 8) the corner joint of the zirconium tube 6 and the tube plate 7, the inner wall of the zirconium tube cannot generate blue, gray and other oxidation colors, and the appearance inspection requirements and corrosion resistance of the zirconium material are met.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (7)
1. Zirconium pipe and tube sheet corner joint welding protection device, its characterized in that: the gas inlet pipe is used for introducing inert protective gas, a tail end plug is arranged at the tail end of the gas inlet pipe, a middle plug is sleeved in the middle of the gas inlet pipe, and a gas outlet hole is formed in the gas inlet pipe in the area between the middle plug and the tail plug; after the tail plug and the middle plug are inserted into the zirconium pipe to be welded, a temporary local protection space is formed by the tail plug and the middle plug.
2. The welding protection device for the corner joints of the zirconium tubes and the tube plates as claimed in claim 1, wherein: the venthole is provided with a plurality of and be evenly arranged.
3. The welding protection device for the corner joints of the zirconium tubes and the tube plates as claimed in claim 2, wherein: and a flow equalizing net convenient for the inert protective gas to equalize and soften is wound on the outer peripheral side of the air outlet.
4. The welding protection device for the corner joints of the zirconium tubes and the tube plates as claimed in claim 3, wherein: the flow equalizing net is a copper wire net.
5. The welding protection device for the corner joints of the zirconium tubes and the tube plates as claimed in claim 1, wherein: the air inlet pipe, the middle plug and the tail plug are all made of red copper.
6. The welding protection device for the corner joints of the zirconium tubes and the tube plates as claimed in claim 1, wherein: the air inlet pipe is welded and fixed with the middle plug and the tail plug respectively.
7. The welding protector for the zirconium tube and tube plate corner joint as claimed in any one of claims 1 to 6, wherein: the excircle diameter of the tail end plug is slightly smaller than that of the middle end plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021823663.0U CN213053400U (en) | 2020-08-27 | 2020-08-27 | Zirconium tube and tube plate corner joint welding protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021823663.0U CN213053400U (en) | 2020-08-27 | 2020-08-27 | Zirconium tube and tube plate corner joint welding protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213053400U true CN213053400U (en) | 2021-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021823663.0U Active CN213053400U (en) | 2020-08-27 | 2020-08-27 | Zirconium tube and tube plate corner joint welding protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213053400U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977168A (en) * | 2021-11-12 | 2022-01-28 | 中国航发贵州黎阳航空动力有限公司 | A frock for aeroengine spray lance welding process |
-
2020
- 2020-08-27 CN CN202021823663.0U patent/CN213053400U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113977168A (en) * | 2021-11-12 | 2022-01-28 | 中国航发贵州黎阳航空动力有限公司 | A frock for aeroengine spray lance welding process |
| CN113977168B (en) * | 2021-11-12 | 2024-04-12 | 中国航发贵州黎阳航空动力有限公司 | Tool for welding and processing spray boom of aero-engine |
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