CN221097475U - Vacuum switch valve for superconducting magnet - Google Patents
Vacuum switch valve for superconducting magnet Download PDFInfo
- Publication number
- CN221097475U CN221097475U CN202322914414.2U CN202322914414U CN221097475U CN 221097475 U CN221097475 U CN 221097475U CN 202322914414 U CN202322914414 U CN 202322914414U CN 221097475 U CN221097475 U CN 221097475U
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- Prior art keywords
- sealing
- magnet
- piston rod
- superconducting magnet
- piston
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- 238000007789 sealing Methods 0.000 claims abstract description 104
- 239000000428 dust Substances 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000000605 extraction Methods 0.000 abstract description 12
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model relates to the technical field of superconducting magnet vacuum devices, in particular to a superconducting magnet vacuumizing switch valve. A superconducting magnet vacuumizing switch valve is characterized in that: the bottom of the valve body is connected with one end of the dust cover, the other end of the dust cover is connected with one end of the rapid positioning support, and the other end of the rapid positioning support is connected with the handle; a piston rod is arranged in the quick positioning support, and one end of the piston rod penetrates through the dust cover and is connected with the sealing piston; the sealing piston is positioned in the valve body. Compared with the prior art, 1. The manufacturing cost is low, the structure is simple, the installation is convenient and fast, the manpower is saved, and only 1 person is needed for the installation and the disassembly; 2. the sealing effect is stable, the exhaust efficiency is high, and each magnet can save more than 3 hours of operation time; 3. when the magnet is disassembled, no air enters the magnet, so that the high vacuum state of the magnet heat insulation container is not influenced; 4. the matching degree is high, and the matching degree can be customized according to the extraction openings of different calibers of the superconducting magnet or through the switching of a reducer pipe.
Description
Technical Field
The utility model relates to the technical field of superconducting magnet vacuum devices, in particular to a superconducting magnet vacuumizing switch valve.
Background
The heat insulation of the low temperature area of the superconducting magnet is realized by a heat insulation container with an outer layer of 4K, namely a high vacuum cavity between the magnet shell and 4K, the vacuum leakage rate of the high vacuum cavity is required to be less than 1x10-5 mbar/s, the evacuation and vacuumizing of the magnet are indispensable links, and the magnet vacuumizing port and the vacuum equipment are connected through a valve device during operation.
The traditional gate valve matched with the reducer pipe vacuumizing device has a plurality of defects: 1. the parts are complicated, the weight is great, two persons are needed to cooperate in mounting and dismounting, and the labor is occupied; 2. the exhaust efficiency is low and the working time is long; 3. after the vacuumizing and exhausting are finished, the sealing state of the connection of the magnet suction port can be broken when the gate valve is disassembled, and a small amount of air can enter the magnet, so that the high vacuum state of the magnet heat insulation container is affected.
Disclosure of Invention
The utility model provides the superconducting magnet vacuumizing switch valve for overcoming the defects in the prior art, which has the advantages of stable sealing effect and high exhaust efficiency, and each magnet can save more than 3 hours of operation time.
In order to achieve the above purpose, a superconducting magnet vacuumizing switch valve is designed, which comprises a valve body and a dust cover, and is characterized in that: the bottom of the valve body is connected with one end of the dust cover, the other end of the dust cover is connected with one end of the rapid positioning support, and the other end of the rapid positioning support is connected with the handle; a piston rod is arranged in the quick positioning support, and one end of the piston rod penetrates through the dust cover and is connected with the sealing piston; the sealing piston is positioned in the valve body.
One end of the piston rod is connected with the sealing piston through threads, the other end of the piston rod is connected with the handle, and the other end of the piston rod is locked through a locking nut.
The sealing piston is of a boss structure, a sealing ring I is sleeved on the outer edge of the upper portion of the sealing piston, and a sealing ring II is embedded on the lower portion of the sealing piston.
The outer edge of the piston rod is sleeved with a sealing sleeve, the top of the sealing sleeve is connected with the valve body through a plurality of screws, and the bottom of the sealing sleeve is connected with the gland through a plurality of screws.
The top of the sealing sleeve is sealed with the valve body through a sealing ring III.
A guide copper sleeve is arranged between the piston rod and the sealing sleeve, and the top of the guide copper sleeve is sealed by a plurality of sealing rings IV.
The sealing sleeve and the gland are positioned in the dust cover.
The dust cover is connected with the bottom of the valve body through a plurality of screws.
Compared with the prior art, the utility model has the advantages of low manufacturing cost, simple structure, convenient installation, labor saving and only 1 person operation for installation and disassembly; 2. the sealing effect is stable, the exhaust efficiency is high, and each magnet can save more than 3 hours of operation time; 3. when the magnet is disassembled, no air enters the magnet, so that the high vacuum state of the magnet heat insulation container is not influenced; 4. the matching degree is high, and the matching degree can be customized according to the extraction openings of different calibers of the superconducting magnet or through the switching of a reducer pipe. The device provided by the utility model is verified by repeated experiments, and completely meets the application technical requirements of the high vacuum field of superconducting magnets.
Drawings
Fig. 1 is a front view of the structure of the present utility model.
Fig. 2 is a cross-sectional view of the structure of the present utility model.
FIG. 3 is a schematic diagram of the structure of the utility model connected with the magnet extraction opening for vacuum pumping.
FIG. 4 is a schematic diagram of the structure of the present utility model connected to a magnet extraction port for vacuum extraction.
Referring to fig. 1 to 4, 1 is a valve body, 2 is a dust cover, 3 is a quick positioning support, 4 is a piston rod, 5 is a handle, 6 is a lock nut, 7 is a sealing piston, 8 is a sealing sleeve, 9 is a guiding copper sleeve, 10 is a gland, 11 is a sealing ring I, 12 is a sealing ring II, 13 is a sealing ring III, 14 is a sealing ring IV, 15 is a magnet extraction opening, 16 is a sealing gasket ring, and 17 is a locking caliper.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the bottom of the valve body 1 is connected with one end of the dust cover 2, the other end of the dust cover 2 is connected with one end of the quick positioning support 3, and the other end of the quick positioning support 3 is connected with the handle 5; a piston rod 4 is arranged in the quick positioning support 3, and one end of the piston rod 4 penetrates through the dust cover 2 and is connected with the sealing piston 7; the sealing piston 7 is positioned inside the valve body 1.
One end of the piston rod 4 is connected with the sealing piston 7 through threads, the other end of the piston rod 4 is connected with the handle 5, and the other end of the piston rod 4 is locked through the locking nut 6.
The sealing piston 7 is of a boss structure, a sealing ring I11 is sleeved on the outer edge of the upper portion of the sealing piston 7, and a sealing ring II 12 is embedded on the lower portion of the sealing piston 7.
The outer fringe cover of piston rod 4 is equipped with seal cover 8, and the top of seal cover 8 is connected with valve body 1 through a plurality of screws, and the bottom of seal cover 8 is connected with gland 10 through a plurality of screws.
The top of the sealing sleeve 8 is sealed with the valve body 1 through a sealing ring III 13.
A guide copper sleeve 9 is arranged between the piston rod 4 and the sealing sleeve 8, and the top of the guide copper sleeve 9 is sealed by a plurality of sealing rings IV 14.
The sealing sleeve 8 and the gland 10 are positioned inside the dust cover 2.
The dust cover 2 is connected with the bottom of the valve body 1 through a plurality of screws.
The valve body 1 is in sealing connection with the sealing sleeve 8 through a sealing ring III13 and is fastened through a screw, the sealing sleeve 8 is in sealing connection with the piston rod 4 through a sealing ring IV14, a guide copper sleeve 9 is embedded in the sealing sleeve 8, the guide copper sleeve 9 is fixed by a gland 10 to provide a guide positioning function for the piston rod 4, the valve body 1 is fixedly connected with the dust cover 2 through a screw, the quick positioning support 3 is connected with the handle 5, the handle 5 is connected with the piston rod 4 and is fastened through a locking nut 6, a sealing ring I11 and a sealing ring II12 are arranged on the sealing piston 7, and the piston rod 4 is in threaded connection with the sealing piston 7; the valve body 1, the sealing sleeve 8 and the piston rod 4 are always in a sealing state through the sealing rings III13 and IV 14.
The valve body 1, the dust cover 2, the quick positioning support 3, the piston rod 4, the handle 5, the sealing piston 7 and the gland 10 are all made of non-magnetic or low-magnetic SUS304 stainless steel.
The seal sleeve 8 adopts 6061 alloy aluminum, which is favorable for static fit of the seal sleeve 8 and the guide copper sleeve 9.
The guide copper sleeve 9 adopts QSn4-3, has high wear resistance and elasticity and good diamagnetism, can well bear the working environment of a hot state or a cold state, and is more suitable for dynamic matching with the piston rod 4.
The sealing ring I11, the sealing ring II12, the sealing ring III13 and the sealing ring IV14 are made of fluororubber, and the high-temperature resistance, the mechanical property and the ageing resistance are excellent.
The utility model is assembled by parts and fixed by screws, thereby being convenient for later maintenance.
The quick positioning support 3 is placed parallel to the piston rod 4 and supported on the end face of the dust cover 2, the vacuumizing and exhausting work of the magnet can be carried out, after the work is finished, the quick positioning support 3 is lifted, the pushing handle 5 drives the sealing piston 7 to seal the extraction opening of the superconducting magnet, the extraction opening of the magnet is in a complete sealing state, the high vacuum state of the magnet heat insulation container is guaranteed, and then the piston rod 4 is separated from the sealing piston 7 by anticlockwise rotating the handle 5, so that the device can be dismantled.
The valve body 1 is in sealing connection with the sealing sleeve 8 through a sealing ring III13 and is fastened by a screw; the sealing sleeve 8 is in sealing connection with the piston rod 4 through a sealing ring IV14, so that the piston rod can slide while sealing; a guide copper sleeve 9 is embedded in the sealing sleeve 8, and the guide copper sleeve is fixed by a gland 10 to provide a guide positioning function for the piston rod 4; the valve body 1 is fixedly connected with the dust cover 2 through a screw, so that dust is reduced from entering the sealing sleeve; the quick positioning support 3 is connected with the handle 5, and the handle 5 is connected with the piston rod 4 and fastened by a nut; the sealing piston 7 is provided with a sealing ring I11 and a sealing ring II12 which are used for sealing the air extraction opening of the magnet; the piston rod 4 is connected with the sealing piston 7 through threads; the device enables the valve body 1, the sealing sleeve 8 and the piston rod 4 to be in a sealing state all the time through the sealing ring III13 and the sealing ring IV 14.
As shown in fig. 3, when the magnet needs to be vacuumized, the top of the valve body 1 is in sealing connection with the magnet extraction opening 15 through the locking calipers 17 and the sealing gasket ring, and air is extracted from the interior of the magnet to the valve body 1.
As shown in fig. 4, after the vacuumizing of the magnet is completed, the piston rod 4 in the valve body 1 moves upward, so that the sealing piston 7 is in sealing connection with the magnet extraction opening 15, and the piston rod 4 is separated from the sealing piston 7 by reversely rotating the threads, so that the inside of the magnet is always kept in a vacuum state.
Compared with the traditional magnet vacuumizing device, the device has the following advantages: 1. the manufacturing cost is low, the structure is simple, the installation is convenient and fast, the manpower is saved, and only 1 person is needed for the installation and the disassembly; 2. the sealing effect is stable, the exhaust efficiency is high, and each magnet can save more than 3 hours of operation time; 3. when the magnet is disassembled, no air enters the magnet, so that the high vacuum state of the magnet heat insulation container is not influenced; 4. the matching degree is high, and the matching degree can be customized according to the extraction openings of different calibers of the superconducting magnet or through the switching of a reducer pipe. The device provided by the utility model is verified by repeated experiments, and completely meets the application technical requirements of the high vacuum field of superconducting magnets.
Claims (8)
1. The utility model provides a superconducting magnet evacuation switch valve, includes valve body, shield, its characterized in that: the bottom of the valve body (1) is connected with one end of the dust cover (2), the other end of the dust cover (2) is connected with one end of the rapid positioning support (3), and the other end of the rapid positioning support (3) is connected with the handle (5); a piston rod (4) is arranged in the rapid positioning support (3), and one end of the piston rod (4) penetrates through the dust cover (2) and is connected with the sealing piston (7); the sealing piston (7) is positioned in the valve body (1).
2. A superconducting magnet vacuumizing switch valve according to claim 1, wherein: one end of the piston rod (4) is connected with the sealing piston (7) through threads, the other end of the piston rod (4) is connected with the handle (5), and the other end of the piston rod (4) is locked through the locking nut (6).
3. A superconducting magnet vacuumizing switch valve according to claim 1 or 2, characterized in that: the sealing piston (7) is of a boss structure, a sealing ring I (11) is sleeved on the outer edge of the upper portion of the sealing piston (7), and a sealing ring II (12) is embedded in the lower portion of the sealing piston (7).
4. A superconducting magnet vacuumizing switch valve according to claim 1 or 2, characterized in that: the outer edge of the piston rod (4) is sleeved with a sealing sleeve (8), the top of the sealing sleeve (8) is connected with the valve body (1) through a plurality of screws, and the bottom of the sealing sleeve (8) is connected with a gland (10) through a plurality of screws.
5. A superconducting magnet vacuumizing switch valve according to claim 4, wherein: the top of the sealing sleeve (8) is sealed with the valve body (1) through a sealing ring III (13).
6. A superconducting magnet vacuumizing switch valve according to claim 4, wherein: a guide copper sleeve (9) is arranged between the piston rod (4) and the sealing sleeve (8), and the top of the guide copper sleeve (9) is sealed by a plurality of sealing rings IV (14).
7. A superconducting magnet vacuumizing switch valve according to claim 4, wherein: the sealing sleeve (8) and the pressing cover (10) are positioned in the dust cover (2).
8. A superconducting magnet vacuumizing switch valve according to claim 1, wherein: the dust cover (2) is connected with the bottom of the valve body (1) through a plurality of screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322914414.2U CN221097475U (en) | 2023-10-30 | 2023-10-30 | Vacuum switch valve for superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322914414.2U CN221097475U (en) | 2023-10-30 | 2023-10-30 | Vacuum switch valve for superconducting magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221097475U true CN221097475U (en) | 2024-06-07 |
Family
ID=91305094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322914414.2U Active CN221097475U (en) | 2023-10-30 | 2023-10-30 | Vacuum switch valve for superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221097475U (en) |
-
2023
- 2023-10-30 CN CN202322914414.2U patent/CN221097475U/en active Active
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| GR01 | Patent grant |