CN203963272U - The small-bore detachable fairlead seal arrangement of ultrahigh vacuum - Google Patents
The small-bore detachable fairlead seal arrangement of ultrahigh vacuum Download PDFInfo
- Publication number
- CN203963272U CN203963272U CN201420280602.2U CN201420280602U CN203963272U CN 203963272 U CN203963272 U CN 203963272U CN 201420280602 U CN201420280602 U CN 201420280602U CN 203963272 U CN203963272 U CN 203963272U
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- Prior art keywords
- pipeline joint
- fairlead
- ultrahigh vacuum
- lower pipeline
- seal
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Abstract
The utility model discloses the small-bore detachable fairlead seal arrangement of ultrahigh vacuum, include the cover plate on ultrahigh vacuum device and be positioned at the fairlead of ultrahigh vacuum device inside, the end of fairlead is set with lower pipeline joint; On described cover plate, have step hole, lower pipeline joint inserts from the below of step hole; The top that is positioned at lower pipeline joint in described step hole is placed with seal ring; Include upper pipeline joint, upper pipeline joint screws in lower pipeline joint through seal ring and seal ring is pressed on to the outer port part of lower pipeline joint, on described upper pipeline joint, is set with gland nut.The utility model reasonable in design, can meet the inner fairlead of ultrahigh vacuum device detachable, seal arrangement installing space little (diameter >5mm) and the less seal request of caliber, and employing is threaded, simple in structure easy for installation.
Description
technical field:
The utility model relates generally to technical field, relates in particular to the small-bore detachable fairlead seal arrangement of a kind of ultrahigh vacuum.
background technique:
Vacuum system needs the often place of dismounting, applies removable being tightly connected.Removable being tightly connected mainly contains: flexible connection, for the elastomeric seal packing ring of static connection, for the metal packing washer of static connection, for double seal packing ring of static connection etc.Draw pipeline for vacuum inside and usually adopt Wilson seal device, its principle is to utilize center projections lock ring tapered J type rubber seal on pipeline.This device is installed and is applicable to caliber within the scope of 6-200mm, and vacuum pressure is higher than 1 × 10
-4pa, and the installing space diameter >22mm of seal arrangement.But for ultrahigh vacuum pressure lower than 1 × 10
-9the vacuum equipment of Pa, especially drawing pipeline is equipment small-bore and that installing space is less, has been difficult to especially effectively encapsulating method.General seal arrangement is difficult to meet following requirement: ultrahigh vacuum, and pipeline bore is less, and detachable, seal arrangement installing space is little, and structure is comparatively simple.Often adopt the non-removable encapsulating methods such as welding, cannot reach dismountable seal request.
model utility content:
The utility model object is exactly to meet detachable, the little space of ultrahigh vacuum device, the deficiency of pipe with small pipe diameter in order to overcome existing seal arrangement, the utility model provides a kind of ultrahigh vacuum small-bore detachable fairlead seal arrangement, and installing space is little, simple in structure, installation method is also very convenient quick.
The utility model solves the technological scheme that its technical problem adopts:
The small-bore detachable fairlead seal arrangement of ultrahigh vacuum, includes the cover plate on ultrahigh vacuum device and is positioned at the fairlead of ultrahigh vacuum device inside, it is characterized in that: the end of described fairlead is set with lower pipeline joint; On described cover plate, have step hole, lower pipeline joint inserts from the below of step hole; The top that is positioned at lower pipeline joint in described step hole is placed with seal ring; Include upper pipeline joint, upper pipeline joint screws in lower pipeline joint through seal ring and seal ring is pressed on to the outer port part of lower pipeline joint, on described upper pipeline joint, is set with gland nut.
The small-bore detachable fairlead seal arrangement of ultrahigh vacuum, is characterized in that: in the screw pair of described upper, lower tube pipeline connector, add stuffing box packing is housed.
When operation, first the welding of fairlead and lower pipeline joint is put into the step hole place of sealed cover, upper pipeline joint and lower pipeline joint are tightened after seal ring is put into step hole.Upper, lower tube pipeline connector adopts sealed pipe screw thread, and sealed pipe screw thread is general purpose sealed pipe screw thread, in use, will in screw pair, add stuffing box packing.Be characterized in both economical, requirement on machining accuracy is moderate.Adopt sealed pipe to be threaded and can meet dismountable usage requirement, and simple in structure easy for installation.Finally by gland nut, pipeline and seal ring are tightly attached to and on sealed cover, reach sealing effect.The design of gland nut is also different from the structural design of general flange seal, this sealing configuration can make seal arrangement take the space that very little space diameter is greater than 5mm can adopt this sealing means, contrasts the sealing means that conventional flange adds seal ring and has greatly saved space.
The utility model has the advantages that:
The utility model reasonable in design, can meet the inner fairlead of ultrahigh vacuum device detachable, seal arrangement installing space little (diameter >5mm) and the less seal request of caliber, and employing is threaded, simple in structure easy for installation.
brief description of the drawings:
Fig. 1 is plan view of the present utility model.
Fig. 2 is A-A sectional drawing.
Fig. 3 is that axle of the present utility model is surveyed External view.
1. pipelines in figure, 2. lower pipeline joint, 3. cover plate, 4. seal ring, 5. upper pipeline joint, 6. gland nut.
embodiment:
Referring to accompanying drawing.
The small-bore detachable fairlead seal arrangement of ultrahigh vacuum, includes the cover plate 3 on ultrahigh vacuum device and is positioned at the fairlead 1 of ultrahigh vacuum device inside, and the end of fairlead 1 is set with lower pipeline joint 2; On described cover plate 3, have step hole, lower pipeline joint 2 inserts from the below of step hole; The top that is positioned at lower pipeline joint 2 in described step hole is placed with seal ring 4; Include upper pipeline joint 5, upper pipeline joint 5 screws in lower pipeline joint 2 through seal ring 4 and seal ring 4 is pressed on to the outer port part of lower pipeline joint 2, on described upper pipeline joint 5, is set with gland nut 6.
In the screw pair of upper, lower tube pipeline connector 5,2, add stuffing box packing is housed.
Claims (2)
1. the small-bore detachable fairlead seal arrangement of ultrahigh vacuum, includes the cover plate on ultrahigh vacuum device and is positioned at the fairlead of ultrahigh vacuum device inside, it is characterized in that: the end of described fairlead is set with lower pipeline joint; On described cover plate, have step hole, lower pipeline joint inserts from the below of step hole; The top that is positioned at lower pipeline joint in described step hole is placed with seal ring; Include upper pipeline joint, upper pipeline joint screws in lower pipeline joint through seal ring and seal ring is pressed on to the outer port part of lower pipeline joint, on described upper pipeline joint, is set with gland nut.
2. the small-bore detachable fairlead seal arrangement of ultrahigh vacuum according to claim 1, is characterized in that: in the screw pair of described upper, lower tube pipeline connector, add stuffing box packing is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280602.2U CN203963272U (en) | 2014-05-28 | 2014-05-28 | The small-bore detachable fairlead seal arrangement of ultrahigh vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280602.2U CN203963272U (en) | 2014-05-28 | 2014-05-28 | The small-bore detachable fairlead seal arrangement of ultrahigh vacuum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203963272U true CN203963272U (en) | 2014-11-26 |
Family
ID=51923854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420280602.2U Active CN203963272U (en) | 2014-05-28 | 2014-05-28 | The small-bore detachable fairlead seal arrangement of ultrahigh vacuum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203963272U (en) |
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2014
- 2014-05-28 CN CN201420280602.2U patent/CN203963272U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |