CN1272566C - Sealing structure of aluminium alloy and stainless steel flange - Google Patents
Sealing structure of aluminium alloy and stainless steel flange Download PDFInfo
- Publication number
- CN1272566C CN1272566C CN 200410009945 CN200410009945A CN1272566C CN 1272566 C CN1272566 C CN 1272566C CN 200410009945 CN200410009945 CN 200410009945 CN 200410009945 A CN200410009945 A CN 200410009945A CN 1272566 C CN1272566 C CN 1272566C
- Authority
- CN
- China
- Prior art keywords
- sealing
- flange
- stainless steel
- steel flange
- aluminum alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 55
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 21
- 239000010935 stainless steel Substances 0.000 title claims abstract description 11
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000012856 packing Methods 0.000 claims description 17
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000001307 helium Substances 0.000 description 6
- 229910052734 helium Inorganic materials 0.000 description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention relates to a sealing structure for aluminum alloy and stainless steel flanges, which belongs to the technical field of the sealing structure. In order to solve the problem of seal between the aluminum alloy and the stainless steel flanges, the present invention provides a sealing device with safety and reliability, and the sealing device can still reach sealing requirements under the condition of raising medium temperature or increasing pressure. The present invention discloses the sealing structure for the aluminum alloy and the stainless steel flanges, which comprises the aluminum alloy flange, the stainless steel flange and two metal sealing rings, wherein an inner and an outer sealing grooves are arranged on the contact surface of the stainless steel flange; the two metal sealing rings are respectively arranged in the sealing grooves; the two flanges are connected through bolts and nuts to provide pretightening force so as to press the two metal sealing rings on a sealing surface; the depth of the sealing groove is 1mm less than the outside dimensions of the metal sealing rings, the deep tolerance of the sealing grooves is from 0 to 0.1, and the flange thickness outside the outer sealing groove of the stainless steel flange 4 is 1 to 2mm thinner than that inside the outer sealing groove of the stainless steel flange 4.
Description
Technical field
The present invention relates to a kind of sealing configuration that is used for the different materials surface of contact, belong to the sealing configuration technical field.
Background technique
Because nuclear reactor pressure shell and experimental hole are very high to seal request, in the place of using helium as cooled gas, the helium leak-down rate of requirement is very low.In order to meet design requirement, the position using aluminium alloy flange and steel flange is provided with the two seals ring structure.Experiment showed, that sealing effect is very good, in 30 minutes experimental period, not seeing has helium to leak.
At present in experimental reactor and on the chemical industry, have and adopt analog structure, but use all be steel flange to steel flange, do not see in the sealing that is applied in steel flange and aluminium flange.This sealing configuration will be applied on the experimental reactor, and pass through strict sealing experiment, and certification structure can reach seal request.Sealing for helium is filled in inside still can reach requirement.Because helium gas molecules diameter minimum, be the material of the most difficult sealing, if helium can seal up, other medium under the then identical operating mode can both seal up.
Summary of the invention
The objective of the invention is to solve the sealing problem between steel flange and the aluminium alloy flange, a kind of safe and reliable seal arrangement is provided, guarantee under the situation of medium elevated temperature or raising pressure, still can reach seal request.
The invention provides the sealing configuration of a kind of aluminum alloy and steel flange, it is characterized in that: the sealing structure comprises aluminium alloy flange, steel flange and two metallic packing rings, have inside and outside double sealing groove on the steel flange surface of contact, two metallic packing rings are installed in the seal groove respectively, two flanges connect the pretightening force that provides by screw bolt and nut two metallic packing rings are pressed on the sealing surface, the degree of depth of described seal groove is that the cross section outside dimension of described metallic packing ring deducts 1mm, and the tolerance of the described seal groove degree of depth is
The flange thickness in the outer road sealing groove of the described steel flange outside is than the thin 1～2mm of flange thickness of outer road sealing groove inboard.
The thickness of aluminium alloy flange of the present invention is 1.2～1.5 times of steel flange thickness.
Metallic packing ring of the present invention is hollow stainless steel ring, and the outside is coated with gold or silver.
The present invention proposes the double sealing ring structure of aluminum alloy and steel flange face, by this Seal Design, the sealing flange gas inside also can prevent two electrochemical corrosion between the different materials flange effectively, can stop the gas of flange outside not enter flange inside simultaneously.
Sealing configuration of the present invention can bear higher pressure, also can bear high temperature, also can be applicable on other pipe-line equipment of delivered inside play degree, inflammable medium.
Description of drawings
Fig. 1 is a sealing configuration erection drawing of the present invention.
Fig. 2 is the seal ring schematic representation.
Fig. 3 is the partial enlarged drawing at A place among Fig. 1.
Embodiment
Specify the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, the invention provides the sealing configuration of a kind of aluminum alloy and steel flange, comprise aluminium alloy flange 1, steel flange 4 and two metallic packing rings 3, have inside and outside double sealing groove 6 on steel flange 4 surface of contact, two metallic packing rings are installed in the seal groove respectively, two flanges connect the pretightening force that provides by bolt 2 and nut 5 two metallic packing rings are pressed on the sealing surface, play seal action.
In order to guarantee that metallic packing ring 3 has enough crush, the degree of depth of seal groove 6 has strict requirement, and promptly the degree of depth of seal groove is that the outside dimension of described metallic packing ring deducts 1mm, and the tolerance of the described seal groove degree of depth is
Because the rigidity of aluminum alloy material is little, identical for the distortion that guarantees two flanges, and guarantee that aluminum alloy compresses the requirement of strength at place at nut, the thickness of aluminium alloy flange is 1.2～1.5 times of steel flange thickness.
As shown in Figure 2, metallic packing ring is hollow stainless steel ring, and the outside is coated with softer metals, and as gold or silver etc., the softer metals easy deformation can guarantee the sealing of junction plane, and prevents to produce electrochemical corrosion.
In order to guarantee that metallic packing ring 3 has sufficient distortion, and absorb the distortion of aluminium alloy flange 1, the road sealing groove outside outside steel flange 4,1～2mm is removed in flange plate processing, be the flange thickness thin 1～2mm of the flange thickness in the described steel flange 4 outer road sealing groove outsides, as shown in Figure 3 than outer road sealing groove inboard.
Sealing configuration of the present invention is pressed in bearing ammonia under the situation of 0.4MPa through the field experiment test, does not see have any bubble to emerge in 30 minutes.Temperature is elevated to 90 ℃, and still not seeing in 30 minutes has any bubble to emerge.Water carries out bulge test, and pressure is elevated to 1MPa, keeps 30 minutes, does not see leakage.Sealing configuration is carried out the external pressure experiment, do not see any leakage in 30 minutes.
Claims (3)
1. the sealing configuration of aluminum alloy and steel flange, it is characterized in that: the sealing structure comprises aluminium alloy flange, steel flange and two metallic packing rings, in having on the steel flange surface of contact, outer double sealing groove, two metallic packing rings are installed in the seal groove respectively, two flanges connect the pretightening force that provides by screw bolt and nut two metallic packing rings are pressed on the sealing surface, the degree of depth of described seal groove is that the cross section outside dimension of described metallic packing ring deducts 1mm, the tolerance of the described seal groove degree of depth is 0+0.1, and the flange thickness in the outer road sealing groove of the described steel flange outside is than the thin 1～2mm of flange thickness of outer road sealing groove inboard.
2. sealing configuration according to claim 1 is characterized in that: the thickness of described aluminium alloy flange is 1.2～1.5 times of steel flange thickness.
3. sealing configuration according to claim 1 is characterized in that: described metallic packing ring is hollow stainless steel ring, and the outside is coated with gold or silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009945 CN1272566C (en) | 2004-12-03 | 2004-12-03 | Sealing structure of aluminium alloy and stainless steel flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410009945 CN1272566C (en) | 2004-12-03 | 2004-12-03 | Sealing structure of aluminium alloy and stainless steel flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1619202A CN1619202A (en) | 2005-05-25 |
| CN1272566C true CN1272566C (en) | 2006-08-30 |
Family
ID=34763139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410009945 Expired - Fee Related CN1272566C (en) | 2004-12-03 | 2004-12-03 | Sealing structure of aluminium alloy and stainless steel flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1272566C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075588A (en) * | 2013-02-01 | 2013-05-01 | 南车长江车辆有限公司 | Dual-sealing flange joint for air braking pipe system of rail wagon |
| CN103702505A (en) * | 2013-12-14 | 2014-04-02 | 中国科学院近代物理研究所 | Niobium and titanium flange device with superconducting cavity suitable for two types of washers |
| CN104565622B (en) * | 2014-12-31 | 2017-03-29 | 江苏安德信超导加速器科技有限公司 | A kind of ultralow temperature beam position detector with almag sealing ring |
| CN104675999B (en) * | 2015-03-13 | 2018-02-09 | 宁波天生密封件有限公司 | Explosive valve seal and its sealing structure |
| CN105387297A (en) * | 2015-12-21 | 2016-03-09 | 常熟市广汇机械设备有限公司 | Aluminum alloy and stainless steel flange |
| CN117329361B (en) * | 2023-12-01 | 2024-01-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-temperature high-pressure section sealing structure for wind tunnel, and mounting method and test method thereof |
-
2004
- 2004-12-03 CN CN 200410009945 patent/CN1272566C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1619202A (en) | 2005-05-25 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20101203 |