CN203718202U - Loose metal sealing flange - Google Patents
Loose metal sealing flange Download PDFInfo
- Publication number
- CN203718202U CN203718202U CN201420081799.7U CN201420081799U CN203718202U CN 203718202 U CN203718202 U CN 203718202U CN 201420081799 U CN201420081799 U CN 201420081799U CN 203718202 U CN203718202 U CN 203718202U
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- China
- Prior art keywords
- flange
- lap joint
- knife
- metal sealing
- positioning part
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Abstract
The utility model relates to a loose metal sealing flange. The loose metal sealing flange comprises a first metal pipeline, a loose flange, a lap joint flange edge, a metal sealing ring, an inner welding flange and a second metal pipeline, wherein the outer wall of the first metal pipeline is sleeved with the loose flange, an annular end of the first metal pipeline is connected with a concave platform on one side of the lap joint flange edge, a lap joint flange edge body is arranged in a concave platform of the loose flange, the metal sealing ring is located between the lap joint flange edge and the inner welding flange, the outer wall of the second metal pipeline is sleeved with the inner welding flange, an annular end of the second metal pipeline is connected with a concave platform of the inner welding flange, the lap joint flange edge adopts a circular ring structure, a concave ring part, a blade and a positioning part are sequentially arranged on the other side of the lap joint flange edge in the radial direction, the blade is located between the concave ring part and the positioning part, the concave ring part is arranged in a position close to the center of the circular ring structure, and the positioning part is arranged in a position far away from the center of the circular ring structure.
Description
Technical field
The utility model belongs to Attained Vacuum Technique field, relates to a kind of pine cover metal sealing flange.
Background technique
In vacuum, obtain field, common metal sealing flange connects two metallic conduits, and this Placement can be used for pipeline high-temperature baking occasion, so that obtain high vacuum and ultra-high vacuum environment.Yet in metal sealing flange attended operation process, if after metal o-ring sealing-in surface scratched by the flange edge of a knife or other objects, such metal sealing connects, and in follow-up high-temperature baking process, has greatly increased the probability of flange gas leakage.
Existing common metal sealing flange, in pipeline attended operation process, because lap joint flange end does not have metal o-ring locating slot, in docking operation, the edge of a knife of lap joint flange is easy to metal o-ring sealing-in surface to cause scuffing, therefore to workman's skilled operation degree, requires also higher.The concrete implementation and operation process of flange of prior art is described below, shown in accompanying drawing 1 and Fig. 2, shown in figure: the first metallic conduit 11, loose flange 12, the lap joint flange edge of a knife 13, metal o-ring 14, interior weldering flange plate 15, the second metallic conduit 16; After wherein loose flange 12 being enclosed within on metallic conduit 11, the first metallic conduit 11 is connected with the lap joint flange edge of a knife 13 welding manners; Interior weldering flange plate 15 is connected with the second metallic conduit 16 welding manners.
When connection metal pipeline, first metal o-ring 14 is put into the seal groove of weldering flange plate 15, loose flange 12, along III direction operation in Fig. 2, is alignd with interior weldering flange plate 15, finally with bolt, fix, complete pipeline connection procedure.In the operating process connecting at pipeline, because the lap joint flange edge of a knife 13 does not have and metal o-ring 14 relative positionings in advance, by loose flange 12 along in III direction operation process, can not guarantee that it once aligns with interior weldering flange plate 15, at loose flange 12 and interior weldering flange plate 15, find accurately in alignment procedure, greatly increased the probability of the lap joint flange edge of a knife 13 scuffing metal o-rings 14; Because the lap joint flange edge of a knife is outside exposed, in its storage, transportation and using process, if fallen, can cause this edge of a knife damage in addition.
Model utility content
(1) technical problem solving
Because the problem that prior art exists, the utility model object is to provide a kind of pine cover metal sealing flange.
(2) technological scheme
In order to reach described object, the utility model provides a kind of pine cover metal sealing flange, comprise the first metallic conduit, loose flange, the lap joint flange edge of a knife, metal o-ring, interior weldering flange plate, the second metallic conduit, the internal diameter of loose flange is placed on the outer wall of the first metallic conduit, one ring end of the first metallic conduit is connected with the concave station of lap joint flange edge of a knife one side, lap joint flange edge of a knife body is placed in the concave station of loose flange, metal o-ring is positioned at the lap joint flange edge of a knife, between interior weldering flange plate, the internal diameter of interior weldering flange plate is placed on the outer wall of the second metallic conduit, and a ring end of the second metallic conduit is connected with the concave station of interior weldering flange plate, wherein, the lap joint flange edge of a knife is circle structure, on the another side of the lap joint flange edge of a knife, be radially provided with successively concave ring part, blade and positioning part, blade is positioned at concave ring part, between positioning part, concave ring part is arranged at the position near circle structure center, positioning part is arranged at the central position away from circle structure.
(3) beneficial effect
The utility model is on the basis of tradition pine cover metal sealing flange, in lap joint flange edge of a knife outside, be provided with the positioning part of fixed seal ring, this positioning part can be in the lap joint flange edge of a knife and interior weldering flange plate docking operation, because radial clearance between positioning part and metal washer is less, as long as metal washer enters in the positioning part of the lap joint flange edge of a knife, just complete centering and found location work accurately, one-time positioning, reduce and adjust number of times, effectively reduce in docking operation, the scuffing probability of the lap joint flange edge of a knife to metal o-ring sealing-in surface, improved the tightness that pipeline connects, and require also lower to workman's skilled operation degree, there is higher popularization use value, because this positioning part height is higher than the lap joint flange edge of a knife, can effectively reduce the lap joint flange edge of a knife and fall the edge of a knife damage probability causing in transportation and using process, and the common cover flange edge of a knife can not.The utility model can conveniently connect two metallic conduits, strong operability, and gas tightness is good; Being mainly used in high vacuum and vacuum pipe needs the occasion of Baking out.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art edge of a knife flange;
Fig. 2 is prior art metal sealing flange embodiment operation chart;
Fig. 3 is the utility model pine cover metal sealing flange arrangement schematic diagram;
Fig. 4 is the structure plan view of the utility model lap joint flange edge of a knife;
Fig. 5 is that the A-A of Fig. 4 is to structure sectional view;
Fig. 6 is the B place partial enlarged drawing of Fig. 5;
Fig. 7 a-Fig. 7 d is the structural representation of the utility model positioning part various embodiments;
Fig. 8 is the structural representation of the utility model loose flange.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
A kind of pine cover of the utility model metal sealing flange arrangement as shown in Figure 3, the first metallic conduit 1, loose flange 2, the lap joint flange edge of a knife 3, metal o-ring 4, interior weldering flange plate 5, seal groove 51, the second metallic conduit 6, the internal diameter of loose flange 2 is placed on the outer wall of the first metallic conduit 1, one ring end of the first metallic conduit 1 is connected with welding or bonding mode with the concave station 7 of the lap joint flange edge of a knife 3 one sides, the lap joint flange edge of a knife 3 bodies are placed in the concave station of loose flange 2, metal o-ring 4 is positioned at the lap joint flange edge of a knife 3, between interior weldering flange plate 5, a sealing surface that is metal o-ring 4 embeds in the positioning part 9 of the lap joint flange edge of a knife 3, in embedding, welds in the seal groove 51 of flange plate 5 another sealing surface of metal o-ring 4, the internal diameter of interior weldering flange plate 5 is placed on the outer wall of the second metallic conduit 6, and a ring end of the second metallic conduit 6 is connected with welding or bonding mode with the concave station of interior weldering flange plate 5, as Fig. 4, Fig. 5, Fig. 6 is the structure plan view of the utility model lap joint flange edge of a knife, the structure A-A of the lap joint flange edge of a knife illustrates to sectional view and B place partial enlarged drawing, wherein, the lap joint flange edge of a knife 3 is circle structure, on the another side of the lap joint flange edge of a knife 3, be radially provided with successively concave ring part 8, blade 10 and positioning part 9, blade 10 is positioned at concave ring part 8, between positioning part 9, concave ring part 8 is arranged at the position near circle structure center, positioning part 9 is arranged at the central position away from circle structure.
Connecting the first metallic conduit 1, during the second metallic conduit 6, first metal o-ring 4 is put into the seal groove 51 of weldering flange plate 5, because the thickness of metal o-ring 4 is greater than the degree of depth of the seal groove 51 of interior weldering flange plate 5, metal o-ring 4 is by the plane of weldering flange plate 5 in outstanding, alignd with metal o-ring 4 in the positioning part of the lap joint flange edge of a knife 39, along Fig. 3, show that I direction clamps the positioning part of the lap joint flange edge of a knife 39 and outstanding metal o-ring 4, by loose flange 2 and interior weldering flange plate 5, along Fig. 3, show II direction centering, finally with bolt, loose flange 2 is connected with interior weldering flange plate 5, making has certain pretightening force between the two, being convenient to the blade 10 of the lap joint flange edge of a knife 3 and the blade of interior weldering flange plate 5 is pressed into metal o-ring 4 and realizes metal sealing, complete pipeline connection procedure.
Embodiment 1: only lists but is not limited to an embodiment, the utility model being made to detailed explaining below, below with nominal diameter 35mm flange explanation the utility model:
The inner diameter of described concave ring part 8 is less than the inner diameter of blade 10.The inner diameter of concave ring part 8 is 35mm, and the inner diameter of blade 10 is 45mm.The inner diameter of described blade 10 is less than the inner diameter of positioning part 9.The inner diameter of blade 10 is 45mm, and the inner diameter of positioning part 9 is 48mm.The height of described concave ring part 8 is less than the height of blade 10.The height of concave ring part 8 is 1.8mm, and the height of blade 10 is 2.5mm.The height of described blade 10 is less than the height of positioning part 9.The height of blade 10 is 2.5mm, and the height of positioning part 9 is 3mm.Described height all be take boss 7 as measuring basis.
Described the first metallic conduit 1 inner diameter is 35mm, outer diameter is 38mm, described concave station 7 inner diameters are 38mm, one ring end of the first metallic conduit 1 embeds in the concave station 7 of the lap joint flange edge of a knife 3 one sides, the two is radially Spielpassung, then in concave ring part 8, with welding manner, connect, guarantee the tightness of joint.
Described the second metallic conduit 6 inner diameters are 35mm, outer diameter is 38mm, the inner diameter of described interior weldering flange plate 5 is 38mm, in embedding, welds in the endoporus of flange plate at one ring end of the second metallic conduit 6, the two is radially Spielpassung, then from the endoporus of interior weldering flange plate 5, with welding manner, connect, guarantee the tightness of joint.
Described metal o-ring 4, diameter of bore is 35.8mm, and outer bore dia is 48mm, and thickness is 2.5mm, and metal o-ring 4 is with the radial fit of positioning part 9 and interior weldering flange plate 5 Spielpassung that is less than 0.5mm.The material of described the first metallic conduit 1, loose flange 2, the lap joint flange edge of a knife 3, interior weldering flange plate 5, the second metallic conduit 6, concave station 7, concave ring part 8, positioning part 9, leak detection groove 9a, blade 10 is stainless steel, and metal o-ring 4 materials are oxygen free copper.
As Fig. 7 a-Fig. 7 d illustrates the structural representation of the utility model positioning part various embodiments, in positioning part, 9 height is to a plurality of leak detection groove 9a are set, the height that described leak detection groove 9a is symmetrically distributed in positioning part 9 to.
It is cuboid groove that Fig. 7 a illustrates leak detection groove 9a, and leak detection groove 9a upper end is plane body structure, the height that two cuboid leak detection groove 9a are symmetrical in positioning part 9 to embodiment;
Fig. 7 b illustrates a plurality of leak detection groove 9a, and a plurality of cuboid leak detection groove 9a are cuboid groove, and leak detection groove 9a upper end is plane body structure; The height that a plurality of cuboids leak detection groove 9a are symmetrical in positioning part 9 to embodiment;
Fig. 7 c illustrates a plurality of leak detection groove 9a, and leak detection groove 9a is semiround body groove, and leak detection groove 9a upper end is plane body structure; The height that a plurality of semiround body leak detection groove 9a are symmetrical in positioning part 9 to embodiment;
It is plane groove that Fig. 7 d illustrates leak detection groove 9a, and leak detection groove 9a upper end is semiround body raised structures, the height that the leak detection groove 9a of a plurality of plane grooves and semiround body raised structures is symmetrical in positioning part 9 to embodiment;
Fig. 8 is the structural representation of the utility model loose flange, the inner convex platform aperture of described the utility model loose flange 2 is a bit larger tham the lap joint flange edge of a knife 3 external diameters, the inner convex platform bore dia D1 of the utility model loose flange is 49mm, other structures general loose flange structure corresponding to known technology of described loose flange 2 is the same, the lap joint flange edge of a knife 3 outer diameters are 49mm, and the inner convex platform hole of loose flange and the external diameter of the lap joint flange edge of a knife 3 are Spielpassung.
Embodiment 2: only list but be not limited to more embodiment, other embodiments repeat no more again, the utility model are made to detailed explaining below, below with nominal diameter 50mm flange explanation the utility model:
The inner diameter of described concave ring part 8 is less than the inner diameter of blade 10.The inner diameter of concave ring part 8 is 50mm, and the inner diameter of blade 10 is 58mm.The inner diameter of described blade 10 is less than the inner diameter of positioning part 9.The inner diameter of blade 10 is 45mm, and the inner diameter of positioning part 9 is 61.6mm.The height of described concave ring part 8 is less than the height of blade 10.The height of concave ring part 8 is 1.8mm, and the height of blade 10 is 2.5mm.The height of described blade 10 is less than the height of positioning part 9.The height of blade 10 is 2.5mm, and the height of positioning part 9 is 3mm.Described height all be take boss 7 as measuring basis.
Described the first metallic conduit 1 inner diameter is 50mm, outer diameter is 54mm, described concave station 7 inner diameters are 54mm, one ring end of the first metallic conduit 1 embeds in the concave station 7 of the lap joint flange edge of a knife 3 one sides, the two is radially Spielpassung, then in concave ring part 8, with welding manner, connect, guarantee the tightness of joint.
Described the second metallic conduit 6 inner diameters are 50mm, outer diameter is 54mm, the inner diameter of described interior weldering flange plate 5 is 54mm, in embedding, welds in the endoporus of flange plate 5 at one ring end of the second metallic conduit 6, the two is radially Spielpassung, then from the endoporus of interior weldering flange plate 5, with welding manner, connect, guarantee the tightness of joint.
Described metal o-ring 4, diameter of bore is 52mm, and outer bore dia is 61.6mm, and thickness is 2.5mm, and metal o-ring 4 is with the radial fit of positioning part 9 and interior weldering flange plate 5 Spielpassung that is less than 0.5mm.
The inner convex platform aperture of described the utility model loose flange is a bit larger tham the lap joint flange edge of a knife 3 external diameters, the inner convex platform bore dia D1 of the utility model loose flange is 63mm, other structures general loose flange structure corresponding to known technology of described loose flange 2 is the same, the outer diameter of the lap joint flange edge of a knife 3 is 63mm, and the inner convex platform hole of loose flange and the external diameter of the lap joint flange edge of a knife 3 are Spielpassung.
The material of described the first metallic conduit 1, loose flange 2, the lap joint flange edge of a knife 3, interior weldering flange plate 5, the second metallic conduit 6, concave station 7, concave ring part 8, positioning part 9, leak detection groove 9a, blade 10 is stainless steel, and metal o-ring 4 materials are oxygen free copper.
It mainly improves structure as shown in positioning part in Fig. 4-Fig. 69 the utility model, the effect of the lap joint flange edge of a knife 3 and metal o-ring 4 location is played in positioning part 9 in metallic conduit connection procedure, a kind of pine cover of this model utility metal sealing flange, leaves the structure fixing metal seal ring 4 as shown in positioning part in Fig. 4-Fig. 69 in common lap joint flange edge of a knife outside.
The above; it is only the embodiment in the utility model; but protection domain of the present utility model is not limited to this; any people who is familiar with this technology is in the disclosed technical scope of the utility model; can understand conversion or the replacement expected, all should be encompassed in of the present utility model comprise scope within.
Claims (10)
1. a pine is overlapped metal sealing flange, comprise: the first metallic conduit, loose flange, the lap joint flange edge of a knife, metal o-ring, interior weldering flange plate, the second metallic conduit, the internal diameter of loose flange is placed on the outer wall of the first metallic conduit, one ring end of the first metallic conduit is connected with the concave station of lap joint flange edge of a knife one side, lap joint flange edge of a knife body is placed in the concave station of loose flange, metal o-ring is positioned at the lap joint flange edge of a knife, between interior weldering flange plate, the internal diameter of interior weldering flange plate is placed on the outer wall of the second metallic conduit, and a ring end of the second metallic conduit is connected with the concave station of interior weldering flange plate, it is characterized in that, the lap joint flange edge of a knife is circle structure, on the another side of the lap joint flange edge of a knife, be radially provided with successively concave ring part, blade and positioning part, blade is positioned at concave ring part, between positioning part, concave ring part is arranged at the position near circle structure center, positioning part is arranged at the central position away from circle structure.
2. pine is overlapped metal sealing flange according to claim 1, it is characterized in that: the inner diameter of described concave ring part is less than the inner diameter of blade.
3. pine is overlapped metal sealing flange according to claim 1, it is characterized in that: the inner diameter of described blade is less than the inner diameter of positioning part.
4. pine is overlapped metal sealing flange according to claim 1, it is characterized in that: the height of described concave ring part is less than the height of blade.
5. pine is overlapped metal sealing flange according to claim 1, it is characterized in that: the height of described blade is less than the height of positioning part.
6. pine cover metal sealing flange according to claim 1, is characterized in that: at the height of positioning part to a plurality of leak detection grooves are set, the height that described leak detection groove is symmetrically distributed in positioning part to.
7. pine is overlapped metal sealing flange according to claim 4, it is characterized in that: described leak detection groove is cuboid groove.
8. pine is overlapped metal sealing flange according to claim 4, it is characterized in that: described leak detection groove is cuboid groove, and leak detection groove upper end is plane body structure.
9. pine is overlapped metal sealing flange according to claim 4, it is characterized in that: described leak detection groove is semiround body groove, and leak detection groove upper end is plane body structure.
10. pine is overlapped metal sealing flange according to claim 4, it is characterized in that: described leak detection groove is plane groove, and leak detection groove upper end is semiround body raised structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081799.7U CN203718202U (en) | 2014-02-25 | 2014-02-25 | Loose metal sealing flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420081799.7U CN203718202U (en) | 2014-02-25 | 2014-02-25 | Loose metal sealing flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718202U true CN203718202U (en) | 2014-07-16 |
Family
ID=51157352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420081799.7U Expired - Fee Related CN203718202U (en) | 2014-02-25 | 2014-02-25 | Loose metal sealing flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807531A (en) * | 2014-02-25 | 2014-05-21 | 中国科学院电子学研究所 | Lap joint metal sealing flange |
-
2014
- 2014-02-25 CN CN201420081799.7U patent/CN203718202U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807531A (en) * | 2014-02-25 | 2014-05-21 | 中国科学院电子学研究所 | Lap joint metal sealing flange |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20190225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |