CN207728870U - A kind of sealing structure - Google Patents
A kind of sealing structure Download PDFInfo
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- CN207728870U CN207728870U CN201721876351.4U CN201721876351U CN207728870U CN 207728870 U CN207728870 U CN 207728870U CN 201721876351 U CN201721876351 U CN 201721876351U CN 207728870 U CN207728870 U CN 207728870U
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- seal groove
- sealing
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- sealing structure
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Abstract
The utility model discloses a kind of sealing structures, third parts including the first parts and corresponding thereto, it is characterized in that, first parts are equipped with the first seal groove, third parts are equipped with the second seal groove, sealing ring is equipped between first seal groove and the second seal groove, the depth of the first seal groove is more than the depth of the second seal groove, and the width of the first seal groove is less than the width of the second seal groove.The structure of the utility model uses the recessed design of shallower and relatively wide rectangular channel on the second parts; it effectively improves current existing sealing structure parts sealing surfaces and protects more demanding drawback; and its sealing performance is further improved, and convenient processing and manufacture, good economy performance.
Description
Technical field
The utility model is related to a kind of sealing structure more particularly to a kind of SF6 high-tension apparatuses sealing structures, belong to high pressure
Electrical equipment technical field.
Background technology
SF6 gases with excellent insulation and arc extinction performance are widely used in various high-tension electricity equipment due to it.
But SF6 gases are《Kyoto Protocol》In in order to reduce greenhouse effects and by the gas of limiting emission.Therefore, SF6 gas-insulateds
The sealing performance of equipment is concerned, and the year leak rate of general SF6 air insulating devices requires to be less than 0.5%.
Current existing SF6 gas sealing structures, are generally arranged on the flange of a parts (i.e. the first parts 1)
The flange of seal groove, another parts (i.e. the second parts 2) designs (as shown in Figure 1 and Figure 2) using pure-surface, with pure
The parts of planar design sealing surfaces sealing surfaces during hoisting transportation are easily scratched, the sealing of another parts
Surface is relatively difficult to ensure shield, needs to carry out special protection.This sealing structure realizes (the former sealing in such as Fig. 2 of three dot encapsulations mostly
Point is 3).Parts sealing surfaces either scratch or special protection, are required for larger cost, less economical.
Invention content
The technical problems to be solved in the utility model is：Provide a kind of raising sealing performance, convenient processing and manufacture, economy
Property good sealing structure, a parts for solving existing SF6 gas sealing structures design sealing surfaces using pure-surface,
The big problem of cost needed for its scuffing and special protection.
In order to solve the above-mentioned technical problem, there is provided a kind of sealing structures, including for the technical solution of the utility model
One parts and third parts corresponding thereto, which is characterized in that first parts are equipped with the first seal groove,
Third parts are equipped with the second seal groove, and sealing ring is equipped between the first seal groove and the second seal groove, the first seal groove
Depth is more than the depth of the second seal groove, and the width of the first seal groove is less than the width of the second seal groove.
Preferably, second seal groove is set to the underface of the first seal groove.
Preferably, the inner surface of first seal groove and the second seal groove, outer surface and the surfaces the Ra of bottom surface
Roughness is 1.6-3.2.
Preferably, the depth of second seal groove is 1.2mm, and the width of the second seal groove is the first sealing well width
1.3.1.6 times.
Preferably, the decrement of the sealing ring is 20-30%.
Preferably, first seal groove is rectangular channel or is dovetail groove.
Preferably, second seal groove is rectangular channel or is dovetail groove.
Preferably, the sealing ring is O-ring or is oval type circle
The structure of the utility model uses the recessed design of shallower and relatively wide rectangular channel on third parts, has
Effect improves current existing sealing structure parts sealing surfaces and protects more demanding drawback, and further improves its sealing
Performance, and convenient processing and manufacture, good economy performance.
Description of the drawings
Fig. 1, which is current existing sealing structure, does not have the schematic diagram of sealing ring；
Fig. 2 is the schematic diagram that current existing sealing structure is equipped with sealing ring；
Fig. 3, which is a kind of sealing structure, does not have the schematic diagram of sealing ring；
Fig. 4 is the schematic diagram that a kind of sealing structure is equipped with sealing ring；
Fig. 5 is the structural schematic diagram of O-ring seal；
Fig. 6 is the A-A sectional views of Fig. 5.
Specific implementation mode
To make the utility model be clearer and more comprehensible, hereby with preferred embodiment, and attached drawing is coordinated to be described in detail below.
Embodiment 1
The utility model is a kind of sealing structure, as shown in Figure 3, Figure 4 comprising sealing ring 30 is located at the first parts 1
On the first deep and narrow seal groove 10, shallow and wide the second sealing of opposite first seal groove 10 on third parts 5
Slot 20.First seal groove 10 and the second seal groove 20 can be rectangular channels, can also be dovetail groove or other.Sealing ring 30 can be with
It is the special-shaped circle that O-ring can also be oval type circle or other shapes.
First seal groove 10 and the second seal groove 20 collectively constitute step type combination seal groove, are placed in step type combination sealing
The gentle pressure of 30 compression compression deformation of sealing ring in slot acts on and realizes the purpose of sealing.
In the present embodiment, the first seal groove 10 is the first rectangular channel, and the second seal groove 20 is the second rectangular channel, sealing ring 30
For O-ring, as shown in Figure 5, Figure 6.
The decrement of sealing ring 30 is 20-30%.30 line footpath of sealing ring should be according to the dimensionally-optimised design of sealing parts.
The depth and width of first rectangular channel should be with sealing ring line footpath collocation design.
The inner surface of first rectangular channel and the second rectangular channel, outer surface and bottom surface are sealing surfaces and by protection table
Face, it is desirable that Ra surface roughnesses 1.6-3.2.
The depth of second rectangular channel is preferably designed for 1-2mm, and width is 1.3-1.6 times of the first width of rectangular.
The structure of the utility model realizes four dot encapsulations (seal point 4 in such as Fig. 4) under gas pressure, further carries
Its high sealing performance.The utility model is suitable for the static seal between metal flange and metal flange.
Embodiment 2
In the present embodiment, the first seal groove 10 is the first dovetail groove, and the second seal groove 20 is the second dovetail groove, sealing ring 30
For oval type circle.
Other are same as Example 1.
Claims (8)
1. a kind of sealing structure, including the first parts (1) and third parts (5) corresponding thereto, which is characterized in that institute
The first parts (1) stated be equipped with the first seal groove (10), third parts (5) be equipped with the second seal groove (20), first
Sealing ring (30) is equipped between seal groove (10) and the second seal groove (20), the depth of the first seal groove (10) is more than the second sealing
The depth of slot (20), the width of the first seal groove (10) are less than the width of the second seal groove (20).
2. a kind of sealing structure as described in claim 1, which is characterized in that it is close that second seal groove (20) is set to first
The underface of sealing groove (10).
3. a kind of sealing structure as described in claim 1, which is characterized in that first seal groove (10) and the second sealing
Inner surface, outer surface and the Ra of the bottom surface surface roughnesses of slot (20) are 1.6-3.2.
4. a kind of sealing structure as described in claim 1, which is characterized in that the depth of second seal groove (20) is
1.2mm, the width of the second seal groove (20) are 1.3-1.6 times of the first seal groove (10) width.
5. a kind of sealing structure as described in claim 1, which is characterized in that the decrement of the sealing ring (30) is 20-
30%.
6. a kind of sealing structure as described in claim 1, which is characterized in that first seal groove (10) be rectangular channel or
Person is dovetail groove.
7. a kind of sealing structure as described in claim 1, which is characterized in that second seal groove (20) be rectangular channel or
Person is dovetail groove.
8. a kind of sealing structure as described in claim 1, which is characterized in that the sealing ring (30) is O-ring or is ellipse
Round type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876351.4U CN207728870U (en) | 2017-12-28 | 2017-12-28 | A kind of sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876351.4U CN207728870U (en) | 2017-12-28 | 2017-12-28 | A kind of sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207728870U true CN207728870U (en) | 2018-08-14 |
Family
ID=63086923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721876351.4U Active CN207728870U (en) | 2017-12-28 | 2017-12-28 | A kind of sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207728870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118407932A (en) * | 2024-06-25 | 2024-07-30 | 宁波威孚天力增压技术股份有限公司 | Press shell structure for turbocharger |
-
2017
- 2017-12-28 CN CN201721876351.4U patent/CN207728870U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118407932A (en) * | 2024-06-25 | 2024-07-30 | 宁波威孚天力增压技术股份有限公司 | Press shell structure for turbocharger |
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