CN110793729A - Auxiliary equipment for detecting and protecting sealing performance of welding port of vacuum cavity by using helium property - Google Patents
Auxiliary equipment for detecting and protecting sealing performance of welding port of vacuum cavity by using helium property Download PDFInfo
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- CN110793729A CN110793729A CN201910991542.2A CN201910991542A CN110793729A CN 110793729 A CN110793729 A CN 110793729A CN 201910991542 A CN201910991542 A CN 201910991542A CN 110793729 A CN110793729 A CN 110793729A
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- welding
- detecting
- vacuum cavity
- fixedly connected
- protecting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
- G01M3/205—Accessories or associated equipment; Pump constructions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/225—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for welds
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to the technical field of vacuum detection instruments and discloses auxiliary equipment for detecting and protecting the sealing property of a welding port of a vacuum cavity by utilizing helium characteristics. After the position of the hole leakage is detected, the welding equipment can be placed in the placing channel in the shell, the spring column in the clamping mechanism is moved according to the size of the welding equipment, so that the spring column is close to or away from the welding equipment under the limitation of the guide wheel, the welding head of the welding equipment is extended out of the welding opening, the welding opening is located at the position of the hole leakage, the welding equipment is not required to be moved in the process of mounting the welding equipment, and the effect of welding and repairing without repositioning is achieved.
Description
Technical Field
The invention relates to the technical field of vacuum detection instruments, in particular to auxiliary equipment for detecting and protecting the sealing property of a welding port of a vacuum cavity by using helium property.
Background
Vacuum leak detection is a process of detecting an air leakage part and the size of the air leakage part of a vacuum system, and a vacuum leak detector is commonly used for detection.
The wall of the vacuum system, container or device has defects such as holes, cracks or gaps due to the defects of the material or the welding seams and mechanical joints, and the external atmosphere enters the interior of the system through the defects, so that the system, container or device cannot reach the expected vacuum degree, and the phenomenon is called air leakage. The defect causing the air leakage is called leak hole; particularly, leak holes often exist in welding positions, the leak holes are often irregular in shape and narrow in pores, and the conventional detection equipment cannot accurately detect the leak hole phenomenon; in addition, after the position of the leak hole is detected by the existing detection equipment, the leak hole needs to be repaired by welding equipment or other equipment, but the repair instrument needs to reposition the position of the leak hole, so that the phenomenon of repair dislocation is easy to occur, and therefore, auxiliary equipment for detecting and protecting the sealing property of a welding port of a vacuum cavity by using helium property is produced.
Disclosure of Invention
In order to realize the purposes of accurately detecting the leak hole phenomenon and welding and repairing without repositioning, the invention provides the following technical scheme: utilize helium matter characteristic to detect and protect auxiliary assembly of vacuum cavity weld seam leakproofness, the power distribution box comprises a box body, the fixed surface of box is connected with the magnetic sheet, and the inside swing joint of magnetic sheet has the pivot, and one side fixedly connected with casing of box is kept away from to the magnetic sheet, the inside fixedly connected with filament of box, the right side fixedly connected with gas cell of filament, the fixed surface of gas cell is connected with the filtration mouth, the inside diapire fixedly connected with collecting plate of casing, the passageway is placed to the inside of casing and the top fixedly connected with that is located collecting plate, and the one end swing joint who places the passageway and keep away from collecting plate has fixture.
The invention has the beneficial effects that:
1. the box body and the shell are placed at a position to be detected, the rotating shaft is rotated according to the size of an object to be detected to enable the welding port to be positioned at a proper position, the driving part is started, hot electrons emitted by the filament flow to the anode plate in an accelerated manner, and the gas molecules are ionized after encountering the gas molecules in the gas tank; the ions are influenced by the magnetic plate in the process of moving to the collecting plate, and then the ions move along a circular track under the action of Lorentz force; the mass of the ions is m, the charge is e, the radius of the circular track is related to the mass-to-charge ratio m/e, the position of the gap between the adjusting sphere and the exhaust channel is moved, so that m/e is 4, namely He + can penetrate through the gap, other ions different from the mass-to-charge ratio of helium cannot penetrate through the outlet gap due to the fact that the deflection radius of the ions is different from the arrangement of the gap of the instrument, therefore, the helium mass spectrometer leak detector arranged on the object to be detected can only detect monovalent helium ions, the degree of a leak hole can be detected according to information displayed on the helium mass spectrometer, and the effect of accurately detecting the phenomenon and degree of the leak hole is achieved.
2. After the position of the hole is detected, the welding equipment can be placed in the placing channel inside the shell, the spring column in the clamping mechanism is moved according to the size of the welding equipment, so that the spring column is close to or away from the welding equipment under the limitation of the guide wheel, the welding head of the welding equipment is extended out of the welding opening, the welding opening is located at the position of the hole, the welding equipment is not required to be moved in the process of installing the welding equipment, and the effect of welding repair can be achieved without repositioning.
Preferably, fixture includes the spring post, and the both sides of spring post all swing joint have the leading wheel, and the leading wheel plays the effect of restriction spring post moving direction.
Preferably, the upper part of the clamping mechanism is fixedly connected with a welding port, and the opening diameter of the welding port changes along with the movement of the spring column.
Preferably, an exhaust passage is fixedly connected to the inside of the box body and positioned at the upper part of the filtering port.
Preferably, the inside of the exhaust passage is movably connected with an adjusting ball body, and the adjusting ball body is made of insulating materials.
Preferably, the diameter of the adjusting ball is equal to the diameter of the exhaust channel and larger than the diameter of the bent part of the exhaust channel, so as to limit the flow rate of the gas.
Preferably, the distance between the magnetic plate and the box body is equal to the distance between the magnetic plate and the shell, and the magnetic plate generates magnetic induction lines to cover the box body and the shell.
Preferably, an anode plate is fixedly connected to the inside of the box body and positioned on the right side of the filament.
Drawings
FIG. 1 is a front sectional view of the box structure of the present invention;
FIG. 2 is a front cross-sectional view of the housing construction of the present invention;
FIG. 3 is an enlarged view of a portion of the clamping mechanism shown in FIG. 2 at A;
FIG. 4 is an enlarged sectional view of the structure of the case of the present invention;
FIG. 5 is an enlarged view of the interior of the case structure according to the present invention.
In the figure: 1-box body, 2-magnetic plate, 3-rotating shaft, 4-shell, 5-filament, 6-gas tank, 7-filter opening, 8-collecting plate, 9-placing channel, 10-clamping mechanism, 11-spring column, 12-guide wheel, 13-welding opening and 14-anode plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an auxiliary device for detecting and protecting the sealing performance of a vacuum cavity weld joint by using helium characteristics comprises a box body 1, a magnetic plate 2 fixedly connected to the surface of the box body 1, a rotating shaft 3 movably connected to the inside of the magnetic plate 2, a shell 4 fixedly connected to one side of the magnetic plate 2 away from the box body 1, a filament 5 fixedly connected to the inside of the box body 1, an anode plate 14 fixedly connected to the right side of the filament 5 and inside the box body 1, a gas tank 6 fixedly connected to the right side of the filament 5, a filter opening 7 fixedly connected to the surface of the gas tank 6, an exhaust passage fixedly connected to the upper portion of the filter opening 7 and inside the box body 1, an adjusting ball movably connected to the inside of the exhaust passage and made of an insulating material, wherein the diameter of the adjusting ball is equal to the diameter of the exhaust passage and larger than the diameter of the bent portion, inside diapire fixedly connected with collecting plate 8 of casing 4, the inside of casing 4 and the top fixedly connected with that is located collecting plate 8 place passageway 9, the one end swing joint who places passageway 9 and keeps away from collecting plate 8 has fixture 10, fixture 10 includes spring post 11, fixture 10's upper portion fixedly connected with welding port 13, the opening diameter of welding port 13 changes along with the removal of spring post 11, the equal swing joint in both sides of spring post 11 has leading wheel 12, the distance between magnet plate 2 and the box 1 equals with the distance of magnet plate 2 and casing 4, magnet plate 2 produces magnetism and feels line cover box 1 and casing 4, leading wheel 12 plays the effect of restriction spring post 11 moving direction.
When the device is used, the box body 1 and the shell 4 are placed at a position to be detected, the rotating shaft 3 is rotated according to the size of an object to be detected to enable the welding port 13 to be positioned at a proper position, the driving part is started, hot electrons emitted by the filament 5 flow to the anode plate 14 in an accelerated manner, and the gas molecules are ionized after encountering the gas molecules in the gas tank 6; the ions are influenced by the magnetic plate 2 on the way to the collecting plate 8, and then the ions move along a circular track by the Lorentz force; the mass of the ions is m, the charge is e, the radius of the circular track is related to the mass-to-charge ratio m/e, the position of a gap between the adjusting sphere and the exhaust channel is moved, so that m/e is 4, namely He + can pass through the gap, other ions different from the mass-to-charge ratio of helium cannot pass through the outlet gap due to the fact that the deflection radius of the ions is different from the arrangement of the gap of the instrument, therefore, the helium mass spectrometer leak detector arranged on an object to be detected can only detect monovalent helium ions, the degree of a leak hole can be detected according to information displayed on the helium mass spectrometer, and the effect of accurately detecting the phenomenon and the degree of the leak hole is achieved; after the position of the hole is detected, the welding equipment can be placed in the placing channel 9 inside the shell 4, the spring column 11 in the clamping mechanism 10 is moved according to the size of the welding equipment, so that the spring column is close to or away from the welding equipment under the limitation of the guide wheel 12, the welding head of the welding equipment is extended out of the welding opening 13, the welding opening 13 is located at the position of the hole, the welding equipment is not required to be moved in the process of installation, and the welding repairing function can be performed without repositioning.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (8)
1. Utilize helium matter characteristic to detect and protect vacuum cavity welding seam leakproofness's auxiliary assembly, including box (1), its characterized in that: the surface fixed connection of box (1) has magnetic sheet (2), and the inside swing joint of magnetic sheet (2) has pivot (3), and one side fixedly connected with casing (4) of box (1) are kept away from in magnetic sheet (2), the inside fixedly connected with filament (5) of box (1), the right side fixedly connected with gas tank (6) of filament (5), the surface fixed connection of gas tank (6) has filtration mouth (7).
The inside diapire fixedly connected with collecting plate (8) of casing (4), the inside of casing (4) and the top fixedly connected with that is located collecting plate (8) place passageway (9), place the one end swing joint that passageway (9) kept away from collecting plate (8) and have fixture (10).
2. The auxiliary equipment for detecting and protecting the sealing performance of the welding port of the vacuum cavity by using the helium property as claimed in claim 1, wherein: the clamping mechanism (10) comprises a spring column (11), and guide wheels (12) are movably connected to two sides of the spring column (11).
3. The auxiliary equipment for detecting and protecting the sealing performance of the welding port of the vacuum cavity by using the helium property as claimed in claim 1, wherein: the upper part of the clamping mechanism (10) is fixedly connected with a welding port (13).
4. The auxiliary device for detecting and protecting the sealing performance of the welding port of the vacuum cavity by using the helium property as claimed in claim 1, wherein: an exhaust channel is fixedly connected to the inner part of the box body (1) and the upper part of the filtering port (7).
5. The auxiliary equipment for detecting and protecting the sealing performance of the welding port of the vacuum cavity by using the helium property as claimed in claim 1, wherein: the inside of the exhaust passage is movably connected with an adjusting ball body.
6. The auxiliary equipment for detecting and protecting the sealing performance of the welding port of the vacuum cavity by using the helium property as claimed in claim 6, wherein: the diameter of the adjusting ball body is equal to the diameter of the exhaust channel and larger than the diameter of the bent part of the exhaust channel.
7. The auxiliary equipment for detecting and protecting the sealing performance of the welding port of the vacuum cavity by using the helium property as claimed in claim 1, wherein: the distance between the magnetic plate (2) and the box body (1) is equal to the distance between the magnetic plate (2) and the shell (4).
8. The auxiliary equipment for detecting and protecting the sealing performance of the welding port of the vacuum cavity by using the helium property as claimed in claim 1, wherein: an anode plate (14) is fixedly connected to the inner part of the box body (1) and is positioned on the right side of the filament (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910991542.2A CN110793729A (en) | 2019-10-18 | 2019-10-18 | Auxiliary equipment for detecting and protecting sealing performance of welding port of vacuum cavity by using helium property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910991542.2A CN110793729A (en) | 2019-10-18 | 2019-10-18 | Auxiliary equipment for detecting and protecting sealing performance of welding port of vacuum cavity by using helium property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110793729A true CN110793729A (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910991542.2A Withdrawn CN110793729A (en) | 2019-10-18 | 2019-10-18 | Auxiliary equipment for detecting and protecting sealing performance of welding port of vacuum cavity by using helium property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110793729A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201225948Y (en) * | 2008-05-13 | 2009-04-22 | 秦小正 | High-sensitivity yttria iraurite filament helium mass-spectrometer leak detector |
| CN201368790Y (en) * | 2008-09-29 | 2009-12-23 | 合肥皖仪科技有限公司 | Hypersensitized helium mass spectrometer leak detector |
| CN109506844A (en) * | 2018-12-27 | 2019-03-22 | 益和电气集团股份有限公司 | A kind of ring network cabinet SF6 gas tank helium check system and method |
-
2019
- 2019-10-18 CN CN201910991542.2A patent/CN110793729A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201225948Y (en) * | 2008-05-13 | 2009-04-22 | 秦小正 | High-sensitivity yttria iraurite filament helium mass-spectrometer leak detector |
| CN201368790Y (en) * | 2008-09-29 | 2009-12-23 | 合肥皖仪科技有限公司 | Hypersensitized helium mass spectrometer leak detector |
| CN109506844A (en) * | 2018-12-27 | 2019-03-22 | 益和电气集团股份有限公司 | A kind of ring network cabinet SF6 gas tank helium check system and method |
Non-Patent Citations (2)
| Title |
|---|
| 张乐 等: "《简明大学物理》", 31 January 2018 * |
| 黄潜 等: "《VVER-1000核电站综合性能试验》", 30 November 2013 * |
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| PB01 | Publication | ||
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Application publication date: 20200214 |