CN111168265A - Tool for vacuum welding seal in atmospheric environment and use method thereof - Google Patents
Tool for vacuum welding seal in atmospheric environment and use method thereof Download PDFInfo
- Publication number
- CN111168265A CN111168265A CN201911326630.7A CN201911326630A CN111168265A CN 111168265 A CN111168265 A CN 111168265A CN 201911326630 A CN201911326630 A CN 201911326630A CN 111168265 A CN111168265 A CN 111168265A
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- CN
- China
- Prior art keywords
- hole
- plugging
- sealing
- welding
- vacuum
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
Abstract
The invention belongs to the technical field of vacuum sealing devices, and particularly relates to a tool for vacuum welding in an atmospheric environment, which comprises a target vacuum container shell and a target vacuum container inner shell, wherein a plugging hole is formed in the target vacuum container shell, a guide sleeve box is arranged at the plugging hole of the target vacuum container shell, a through hole is formed in the guide sleeve box, a plugging punch rod is arranged in the through hole, a positioning hole is formed in the bottom of the plugging punch rod, a welding plugging head is arranged in the positioning hole, the welding plugging head is matched with the plugging hole of the target vacuum container shell, a vacuumizing hole is formed in one side of the guide sleeve box and is communicated with the through hole in the guide sleeve box, and the vacuumizing hole is connected with a vacuum pump; the welding plugging method has the advantages that the welding plugging is carried out on the premise that the high vacuum state is not damaged, the requirements of full vacuum and high vacuum environment are omitted, the method is reliable, the tool is simple, the use is convenient, and the requirement of high vacuum degree after plugging can be effectively guaranteed.
Description
Technical Field
The invention belongs to the technical field of vacuum sealing devices, and particularly relates to a vacuum welding tool in an atmospheric environment and a using method thereof.
Background
The container with a certain high vacuum degree is of a double-layer bushing structure and comprises a target vacuum container outer shell and a target vacuum container inner shell, wherein the target vacuum container outer shell is used for bearing internal pressure and external pressure, the target vacuum container inner shell is used for bearing medium corrosion, the target vacuum container inner shell and the target vacuum container inner shell are required to be precisely attached, and the attachment rate is required to be 100%. In the process of sleeving the inner shell and the outer shell, residual gas on the binding surface needs to be discharged from a blocking hole at the bottom of the outer shell, and then the binding surface is evacuated to the absolute pressure below 10Pa through the blocking hole, so that the binding surface is free of gaps. After the depth of the binding face is pumped out, the blocking hole needs to be welded and blocked, the existing vacuum degree is required not to be reduced or destroyed before and after welding, and the sealing and welding residual or incidental structures are not required.
At present, a common plugging device is provided with a temporary sealing structure or a valve, vacuum damage is often caused after welding plugging, a high vacuum state after plugging cannot be guaranteed, and reliability is poor; or the plugging can be carried out only in a full vacuum environment, and the use requirement cannot be met if the vacuum degree of the vacuum box chamber is not high.
Disclosure of Invention
The invention aims to provide a tool for vacuum welding and sealing in an atmospheric environment and a using method thereof, which depend on a simple tool, carry out welding and sealing on the premise of not destroying a high vacuum state, save the requirements of a full vacuum and high vacuum environment, have reliable method and simple tool, and can effectively guarantee the requirement of high vacuum degree after sealing.
In order to meet the purpose, the invention adopts the technical scheme that: the tool for vacuum welding in the atmospheric environment comprises a target vacuum container shell and a target vacuum container inner shell, wherein a sealing hole is formed in the target vacuum container shell, a guide sleeve box is arranged at the sealing hole of the target vacuum container shell, a through hole is formed in the guide sleeve box, a sealing punch rod is arranged in the through hole, a positioning hole is formed in the bottom of the sealing punch rod, a welding plug is movably mounted in the positioning hole and matched with the sealing hole of the target vacuum container shell, a vacuumizing hole is formed in one side of the guide sleeve box and communicated with the through hole in the guide sleeve box, the vacuumizing hole is connected with a vacuum pump, and the vacuum pump is used for vacuumizing and laminating between the target vacuum container shell and the target vacuum container inner shell through a gap between the guide sleeve box and the sealing punch rod.
Preferably, the plugging hole is a taper hole, and the roughness Ra of the taper surface of the taper hole is less than 0.4 μm.
Preferably, the welding and sealing plug is a cone, the welding and sealing plug is made of a metal material with welding performance similar to or the same as that of a target vacuum container shell, the taper of the welding and sealing plug is matched with that of the sealing and sealing hole, and the surface roughness Ra of the welding and sealing plug is less than 0.4 mu m.
Preferably, the surface hardness of the welding plug is greater than that of the plugging hole, and the hardness difference is between 50 and 100 Brinell hardness.
Preferably, the material of the guide sleeve box, the plugging plunger and the evacuation port is common carbon steel or stainless steel.
Preferably, the use method of the tool for vacuum sealing in the atmospheric environment is characterized by comprising the following steps:
firstly, manufacturing a welding plug corresponding to a plugging hole, and hardening the welding plug;
step two, mounting the guide sleeve box to the plugging hole of the target vacuum container shell by using vacuum daub, so that the bottom positioning hole of the plugging plunger mounted in the through hole of the guide sleeve box is coincided with the axis of the plugging hole;
thirdly, sealing the hole outside the guide sleeve box by using vacuum cement, and connecting and evacuating the evacuation port and the vacuum pump;
hammering the plugging plunger again to enable a welding plugging head installed in a positioning hole at the bottom of the plugging plunger to enter the plugging hole;
step five, removing the guide sleeve box, and performing conventional welding and plugging
The invention has the beneficial effects that: the invention seals the sealing hole reserved on the target vacuum container shell by arranging a tool formed by combining a guide sleeve box, a sealing plunger, a welding sealing plug and an evacuation port, wherein the sealing hole is connected with a vacuum pump through the evacuation port on the guide sleeve box and vacuumized, then the welding sealing plug is pressed into the sealing hole by using the sealing plunger in the guide sleeve box, then the tool is disassembled, the welding sealing plug is subjected to conventional welding, and then the sealing task is finished by polishing, flattening and beautifying, and the welding sealing is carried out on the premise of not damaging the high vacuum state, so that the requirements of full vacuum and high vacuum environment are saved, the method is reliable, the tool is simple, the use is convenient, and the high vacuum requirement after sealing can be effectively guaranteed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1. the method comprises the following steps of 1, a target vacuum container outer shell, 2, a guide sleeve box, 3, a plugging plunger, 4, a vacuumizing hole, 5, a welding plugging head and 6, a target vacuum container inner shell.
Detailed Description
The invention is further described by the following structural drawings and working principles:
as shown in figure 1, a tool for vacuum welding in an atmospheric environment comprises a target vacuum container shell 1 and a target vacuum container inner shell 6, wherein a plugging hole is formed in the target vacuum container shell 1, a guide sleeve box 2 is arranged at the plugging hole of the target vacuum container shell 1, a through hole is formed in the guide sleeve box 2, a plugging punch rod 3 is arranged in the through hole, the through hole plays a role in guiding the plugging punch rod 3, a positioning hole is formed in the bottom of the plugging punch rod 3, a welding plug 5 is movably arranged in the positioning hole and plays a role in positioning and guiding the welding plug 5, the welding plug 5 is matched with the plugging hole of the target vacuum container shell 1, so that the welding plug 5 can accurately enter the plugging hole, an evacuation port 4 is formed in one side of the guide sleeve box 2, the evacuation port 4 is communicated with the through hole in the guide sleeve box 2, and the evacuation port 4 is connected with a vacuum pump, the vacuum pump pumps the target vacuum container outer shell 1 and the target vacuum container inner shell 6 to be in vacuum fit through a gap between the guide sleeve box 2 and the plugging plunger 3. The plugging hole is a taper hole, and the roughness Ra of the taper surface of the taper hole is less than 0.4 mu m. The welding and sealing plug 5 is a cone, the welding and sealing plug 5 is made of metal materials with welding performance similar to or the same as that of the target vacuum container shell 1, the taper of the welding and sealing plug 5 is matched with that of the sealing and sealing hole, and the surface roughness Ra of the welding and sealing plug 5 is less than 0.4 mu m. The surface hardness of the welding plug 5 is greater than that of the plugging hole, and the hardness difference is between 50 and 100 Brinell hardness. The material of the guide sleeve box 2, the plugging plunger 3 and the evacuation port 4 is common carbon steel or stainless steel.
When the sealing device is used, firstly, the guide sleeve box 2 is arranged at the plugging hole of a target vacuum container shell through vacuum cement, so that the bottom of a plugging punch rod 3 arranged in a through hole of the guide sleeve box 2 coincides with the axis of the plugging hole, namely, a welding plugging head 5 arranged in a positioning hole arranged at the bottom of the plugging punch rod 3 corresponds to the plugging hole, after the sealing device is installed, the hole outside the guide sleeve box 2 is sealed by the vacuum cement, then an evacuation port 4 is connected with a vacuum pump to evacuate the evacuation port, then the plugging punch rod 3 is hammered, so that the welding plugging head 5 arranged in the positioning hole arranged at the bottom of the plugging punch rod 3 enters the inside of the plugging hole, the hard sealing of a contact surface is completed, then the tool is removed, and the conventional welding plugging is carried out.
Claims (6)
1. The utility model provides a frock of sealing is welded in atmospheric environment vacuum, includes target vacuum container shell and target vacuum container inner shell, be provided with shutoff hole on the target vacuum container shell, its characterized in that: the sealing device is characterized in that a guide sleeve box (2) is arranged at a sealing hole of a target vacuum container shell (1), a through hole is formed in the guide sleeve box (2), a sealing plunger (3) is arranged in the through hole, a positioning hole is formed in the bottom of the sealing plunger (3), a welding sealing plug (5) is movably mounted in the positioning hole, the welding sealing plug (5) is matched with the sealing hole of the target vacuum container shell (1), an evacuation opening (4) is formed in one side of the guide sleeve box (2), the evacuation opening (4) is communicated with the through hole in the guide sleeve box (2), the evacuation opening (4) is connected with a vacuum pump, and the vacuum pump evacuates the space between the target vacuum container shell (1) and a target vacuum container inner shell (6) to be in vacuum fit through a gap between the guide sleeve box (2) and the sealing plunger (3).
2. The tool for vacuum sealing in the atmospheric environment according to claim 1, wherein: the plugging hole is a taper hole, and the roughness Ra of the taper surface of the taper hole is less than 0.4 mu m.
3. The tool for vacuum sealing in the atmospheric environment according to claim 1, wherein: the welding sealing plug (5) is a cone, the welding sealing plug (5) is made of metal materials with welding performance similar to or the same as that of a target vacuum container shell (1), the taper of the welding sealing plug (5) is matched with that of a sealing hole, and the surface roughness Ra of the welding sealing plug (5) is less than 0.4 mu m.
4. The tool for vacuum sealing in the atmospheric environment according to claim 1, 2 or 3, wherein: the surface hardness of the welding plugging head (5) is greater than that of the plugging hole, and the hardness difference is between 50 and 100 Brinell hardness.
5. The tool for vacuum sealing in the atmospheric environment according to claim 1, 2 or 3, wherein: the guide sleeve box (2), the plugging plunger (3) and the evacuation port (4) are made of common carbon steel or stainless steel.
6. The use method of the tool for vacuum sealing in the atmospheric environment according to claim 1 is characterized by comprising the following steps:
firstly, manufacturing a welding plug (5) corresponding to a plugging hole, and hardening the welding plug (5);
step two, mounting the guide sleeve box (2) to the plugging hole of the target vacuum container shell (1) by using vacuum daub, so that a bottom positioning hole of a plugging punch rod (3) mounted in a through hole of the guide sleeve box (2) is coincided with the axis of the plugging hole;
thirdly, sealing the pores outside the guide sleeve box (2) by using vacuum cement, and connecting and evacuating the evacuation port (4) with a vacuum pump;
hammering the plugging plunger (3) again to enable a welding plugging head (5) installed in a positioning hole in the bottom of the plugging plunger (3) to enter the plugging hole;
and fifthly, removing the guide sleeve box (2) and carrying out conventional welding and plugging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326630.7A CN111168265A (en) | 2019-12-20 | 2019-12-20 | Tool for vacuum welding seal in atmospheric environment and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911326630.7A CN111168265A (en) | 2019-12-20 | 2019-12-20 | Tool for vacuum welding seal in atmospheric environment and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111168265A true CN111168265A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911326630.7A Pending CN111168265A (en) | 2019-12-20 | 2019-12-20 | Tool for vacuum welding seal in atmospheric environment and use method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN111168265A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1854670A (en) * | 2005-04-26 | 2006-11-01 | 林项武 | Hot-pipe vacuum sealing method and its sealer |
| CN201306599Y (en) * | 2008-11-12 | 2009-09-09 | 张家港富瑞特种装备股份有限公司 | Vacuumizing tooling |
| CA2798864C (en) * | 2012-12-17 | 2014-04-08 | Westport Power Inc. | Method and apparatus for servicing a tank, a plug, or a tank and plug |
| CN204729658U (en) * | 2015-05-28 | 2015-10-28 | 中国联合工程公司 | A kind of No leakage vacuumizes shutoff frock |
| CN211804492U (en) * | 2019-12-20 | 2020-10-30 | 中核嘉华设备制造股份公司 | Tool for vacuum welding seal in atmospheric environment |
-
2019
- 2019-12-20 CN CN201911326630.7A patent/CN111168265A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1854670A (en) * | 2005-04-26 | 2006-11-01 | 林项武 | Hot-pipe vacuum sealing method and its sealer |
| CN201306599Y (en) * | 2008-11-12 | 2009-09-09 | 张家港富瑞特种装备股份有限公司 | Vacuumizing tooling |
| CA2798864C (en) * | 2012-12-17 | 2014-04-08 | Westport Power Inc. | Method and apparatus for servicing a tank, a plug, or a tank and plug |
| CN204729658U (en) * | 2015-05-28 | 2015-10-28 | 中国联合工程公司 | A kind of No leakage vacuumizes shutoff frock |
| CN211804492U (en) * | 2019-12-20 | 2020-10-30 | 中核嘉华设备制造股份公司 | Tool for vacuum welding seal in atmospheric environment |
Non-Patent Citations (1)
| Title |
|---|
| 赵常兴: "《汽轮机组技术手册》", 31 January 2007, 中国电力出版社 * |
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