CN201843994U - Coating seal ring - Google Patents
Coating seal ring Download PDFInfo
- Publication number
- CN201843994U CN201843994U CN2010201880947U CN201020188094U CN201843994U CN 201843994 U CN201843994 U CN 201843994U CN 2010201880947 U CN2010201880947 U CN 2010201880947U CN 201020188094 U CN201020188094 U CN 201020188094U CN 201843994 U CN201843994 U CN 201843994U
- Authority
- CN
- China
- Prior art keywords
- ring
- seal ring
- seal
- inconel
- solder joint
- 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 - Lifetime
Links
- 239000011248 coating agent Substances 0.000 title abstract 2
- 238000000576 coating method Methods 0.000 title abstract 2
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000004332 silver Substances 0.000 claims abstract description 4
- 229910001055 inconels 600 Inorganic materials 0.000 claims abstract 4
- 229910000816 inconels 718 Inorganic materials 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 14
- 229910000679 solder Inorganic materials 0.000 claims description 13
- 238000005253 cladding Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 229910001026 inconel Inorganic materials 0.000 description 8
- 239000007769 metal material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 239000000659 freezing mixture Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
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- Gasket Seals (AREA)
Abstract
The utility model relates to a coating seal ring, which comprises three parts of a first ring comprising inconel 600, a second ring comprising high-purity silver and a spiral spring which is coated by inconel 600 outer shell and is wound by inconel 718, and the outer side of the seal ring which is integrated by the way is provided with an opening along the peripheral direction, the section of the seal ring is C-shaped, the seal ring is provided with a radial external seal surface and an internal seal surface, when a seal ring is compressed, each circle of the spiral spring generates attached bounce to radial inconel 600, the high-purity silver ring has plastic deformation, and the defect that the flange seal surface is small is overcome. By the matching of elasticity and plasticity, the metal seal ring has better sealing property, and the capacity for supplementing the flange deformation and seal ring looseness due to the fluctuation of the temperature and pressure.
Description
Technical field
The present invention relates to the Sealing in a kind of pressurized container, especially the cladding sealing ring that uses in high temperature, high pressure vessel and the voltage stabilizer.
Background technique
Sealing under high temperature, high pressure working condition such as nuclear power station, must consider following technical order: leak-down rate is all the time≤10 under the situation of temperature and pressure alternation 1, will to guarantee run duration
-9Pam
3/ s, 3, in accident as in the quick cooling, leak-down rate≤10
-6Pam
3/ s.Be the vitals that uses in the cogeneration power plant equipment in pressurized container and the voltage stabilizer, various types of static seals must be arranged when these parts link to each other with the external world to prevent the leakage of thermal cycle transformation working medium.Sealing has various cross-sectional structure with the various parts of special sealing, for example adopts usually: pure nickel solid torus pad, spirotallic gasket, grooved metal gasket, turbine pad etc.But these pads all be difficult to avoid the situation lower levelling plate at temperature and pressure alternation can produce stress relaxation so that cause leak-down rate do not reach≤10
-9Pam
3The requirement of/s.
So the Sealing that a kind of better effects if need be provided guarantees the sealing of junction between the pressurized container flange.
Summary of the invention
The purpose of this invention is to provide and realize plasticity and the good fit cladding sealing ring of elasticity, it can utilize the interaction between two kinds of different metal materials and the spring three to realize plasticity and flexible good fit, thereby makes this cladding sealing ring have excellent sealing performance.
Another object of the present invention provides a kind of cladding sealing ring, and it is lax that it can compensate the flange distortion and the seal ring that cause because of the temperature and pressure fluctuation.
This cladding sealing ring comprises: first ring, and described first ring is positioned at the outermost of seal ring, and its cross section is c-shaped, and has the first external sealed face and first inner sealing surface; Second ring, the described second ring outside is closely coated by described first ring, and its cross section is c-shaped, and has the second external sealed face and second inner sealing surface; Also comprise metal spring, described metal spring is located on the inboard of described second ring and compresses described second ring.
This ring cross section becomes C shape, has radially external sealed face and inner sealing surface.When compression sealing circle, each circle diameter of spiral spring produces additional rebounding force to the internal layer metal shell, and makes outer layer metal material generation plastic deformation, has tamped the tiny flaw on flange seal surface.The cooperation of this elasticity and plasticity makes this metal o-ring have good sealability and compensation causes flange distortion and the lax ability of seal ring because of temperature and pressure fluctuates.
Preferably, it is two parts independently separately that first in the seal ring among the present invention ring and second encircles, material difference separately.
Preferably, described first ring adopts the different metal of hardness with the second ring material, helps compensating and tamping the tiny flaw of sealing surfaces thereby first first inner sealing surface that encircles and the second second external sealed face that encircles are exerted pressure mutually.
More preferably, described first ring is for inconel (inconel) 600, described second ring for purity more than or equal to 99% silver, the material that described metal spring adopts is the inconel (inconel) 718 that is different from first ring.Cooperatively interacting and mutual effect of the elasticity of above-mentioned three kinds of materials and plasticity makes this metallic packing ring have good sealability and compensation causes flange distortion and the lax ability of seal ring because of temperature and pressure fluctuates
On the other hand, seal ring provided by the invention is because metal spring is a Monolithic spring, and the centre has only a solder joint, and/or first ring has only a solder joint, and/or second ring has only a solder joint.Because above-mentioned three parts are unitary construction, the centre has only a solder joint, and preferable is beneficial to radial seal and circumferentially compensates.
In addition, described metal spring and the different radial leakage of the first ring sealing make leak-down rate≤10
-9Pam
3/ s.
The circumferential openings position of described first ring is corresponding fully with the circumferential openings position of second ring, and is whole c-shaped.
More preferably: form metal spring with the method for single solder joint, and/or, form described first ring with the method for single solder joint, and/or, form described second with the method for single solder joint and encircle.
Description of drawings
According to following description and accompanying drawing, can understand the present invention well, these accompanying drawings have shown non-restrictive example of the present invention.More particularly, in the accompanying drawings:
Be further detailed below in conjunction with example:
Fig. 1 is the axial section of pressurized container, contains the sealing of embodiments of the invention junction point between pressure container cylinder flange and top cover flange.
Fig. 2 is the sectional view of the annular sealing ring of the embodiment of the invention shown in Fig. 1.
1 first ring, 2 second rings, 3 metal springs,
4 flanges, 5 ozzles, 6 top covers, 7 pressurized container supporting surfaces, 8 ring segments, 9 guiding devices, 10 shells
Embodiment
Shown in Figure 1 is the pressurized container of high temperature, pressure coolant, cylindrical shell 10 is welded with freezing mixture by the flange 4 of a strap bolt tapped hole, one and imports and exports the ring segment 8 of ozzle 5, a changeover portion and a semicircle lower seal head and be welded, wherein top cover 6 is hot pressed into semicircle by steel plate, be drilled with bolt hole at upper flange 4 upper peripheries, have on its supporting surface and place groove of the present invention.When high temperature, pressure coolant flow in pressurized container, wherein some inwall along pressurized container directly flows to the pressure vessel outlet adapter, and follow the variation of temperature and pressure, because pressure vessels top cover and shell flange are two independent parts of making, in pressurized container, must be assembled together and will guarantee high leak tightness, internal pressure will be far longer than the external pressure at pressurized container place during the pressurized container operation, for preventing that freezing mixture from leaking, a seal ring is installed between pressure container cylinder and top cover.
Junction point will bear in the course of the work between pressure container cylinder and the top cover, expansion that hot coolant produces and contraction and the radial and axial STRESS VARIATION that causes, the present invention adapts to the higher radial and axial STRESS VARIATION in this position with a kind of simply and effectively design, to obtain maximum sealing effect.
By sectional view shown in Fig. 2, the present invention is able to clearer and more definite description.This ring is made up of three parts, comprises first ring, 1 and second ring of axially being made up of different materials relatively 2, and in the inboard metal spring 3 is set simultaneously, and a circumferential openings along the ring outside is arranged in the seal ring that links into an integrated entity; The described first ring cross section is c-shaped, has sealing surface radially; The described second ring cross section is c-shaped, has sealing surface radially; In described spiral spring is coated on by double layer of metal.First layer and second layer loop resistance have ended the circumferential stretching, extension of seal ring, thereby prevent to produce bad peripheral stress.
As seen, the present invention more specifically coats in tradition and in the C V-shaped ring internal and external layer of unlike material is set respectively and is provided with spring 3 in the inboard.
Preferably, select two rings be the metal of unlike material, as first ring for inconel (inconel) 600, the second rings for purity more than or equal to 99% silver, and the material that metal spring adopts is to be different from first inconel (inconel) 718 that encircles.
Should be understood that above-mentioned material does not limit the present invention, can also use the different other materials of hardness, as nonmetallic material or other metallic material such as PTFE, as long as make both intensity differences.
In preferred embodiment, first ring and second annulate shaft be to separating, and is two parts independently separately, and two are encircled used metal material differences.Second layer metal chain rate first layer metal ring hardness is little, is mainly used to play the good effect of making up, and is used for tamping the tiny flaw on flange seal surface.
First ring and second ring be made up of metallic material all have only a solder joint.Spiral spring in it is wrapped in by metal ring is a Monolithic spring, and the centre has only a solder joint, and preferable is beneficial to radial seal and circumferentially compensates.
Work medi-spring and first layer metal ring are used for sealing the various leakage radially that the freezing mixture of High Temperature High Pressure produces betwixt, make leak-down rate all the time under normal circumstances≤10
-9Pam
3/ s, the cooperation of this elasticity and plasticity makes this metal o-ring have good sealability and compensation causes flange distortion and the lax ability of seal ring because of temperature and pressure fluctuates.
Should be appreciated that the example that accompanying drawing has only shown to be provided via practical demonstration of the present invention, can change its form and configuration, but can not break away from the scope of the design that the present invention is based on.Any reference mark that provides in subsidiary claims is that specification and accompanying drawing are read for ease of reference purely, and they do not limit the protection domain of being represented by claim.
Claims (7)
1. cladding sealing ring, it comprises:
First ring, described first ring is positioned at the outermost of seal ring, and its cross section is c-shaped, and has the first external sealed face and first inner sealing surface;
Second ring, the described second ring outside is closely coated by described first ring, and its cross section is c-shaped, and has the second external sealed face and second inner sealing surface;
Above-mentioned two rings link into an integrated entity and week one circumferential openings are arranged laterally along ring,
It is characterized in that:
Also comprise metal spring, described metal spring is located on the inboard of described second ring and compresses described second ring.
2. seal ring according to claim 1 is characterized in that: it is two parts independently separately that described first ring and second encircles, material difference separately.
3. seal ring according to claim 2 is characterized in that: described first ring adopts the different metal of hardness with the second ring material.
4. seal ring according to claim 1 and 2 is characterized in that: described first ring is for inconel 600, described second ring for purity more than or equal to 99% silver, the material that described metal spring adopts is the inconel 718 that is different from first ring.
5. according to any the described seal ring in the claim 1 to 3, it is characterized in that:
Described metal spring is a Monolithic spring, and the centre has only a solder joint, and/or,
Described first ring has only a solder joint, and/or,
Described second ring has only a solder joint.
6. according to any the described seal ring in the claim 1 to 3, it is characterized in that: described first ring and second ring all have only a solder joint.
7. according to any the described seal ring in the claim 1 to 3, it is characterized in that: the circumferential openings position consistency of the circumferential openings position of described first ring and second ring, whole c-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201880947U CN201843994U (en) | 2010-05-13 | 2010-05-13 | Coating seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201880947U CN201843994U (en) | 2010-05-13 | 2010-05-13 | Coating seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843994U true CN201843994U (en) | 2011-05-25 |
Family
ID=44038886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201880947U Expired - Lifetime CN201843994U (en) | 2010-05-13 | 2010-05-13 | Coating seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201843994U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168757A (en) * | 2011-02-01 | 2011-08-31 | 宁波天生密封件有限公司 | C-shaped cladding sealing ring of built-in spring and manufacturing method thereof |
| CN102278478A (en) * | 2011-07-14 | 2011-12-14 | 广东红墙新材料股份有限公司 | Sealing gasket |
| CN101865288B (en) * | 2010-05-13 | 2013-01-30 | 励行根 | Cladding sealing ring and manufacturing method thereof |
| CN103646674A (en) * | 2013-11-27 | 2014-03-19 | 中科华核电技术研究院有限公司 | C-shaped sealing ring |
| CN104595487A (en) * | 2015-01-30 | 2015-05-06 | 柳州市莫尔斯汽配制造有限公司 | Seal ring |
-
2010
- 2010-05-13 CN CN2010201880947U patent/CN201843994U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865288B (en) * | 2010-05-13 | 2013-01-30 | 励行根 | Cladding sealing ring and manufacturing method thereof |
| CN102168757A (en) * | 2011-02-01 | 2011-08-31 | 宁波天生密封件有限公司 | C-shaped cladding sealing ring of built-in spring and manufacturing method thereof |
| CN102278478A (en) * | 2011-07-14 | 2011-12-14 | 广东红墙新材料股份有限公司 | Sealing gasket |
| CN103646674A (en) * | 2013-11-27 | 2014-03-19 | 中科华核电技术研究院有限公司 | C-shaped sealing ring |
| CN104595487A (en) * | 2015-01-30 | 2015-05-06 | 柳州市莫尔斯汽配制造有限公司 | Seal ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANSHENG AIRTAIGHT PACKING NINGBO Free format text: FORMER OWNER: LI XINGGEN Effective date: 20110712 Free format text: FORMER OWNER: SONG WEI |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315302 LIJIA LANE, QUNFENG VILLAGE, HUSHAN SUBDISTRICT, CIXI CITY, ZHEJIANG PROVINCE TO: 315302 NO. 118, PENGMIN ROAD, BAISHA, CIXI CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110712 Address after: Zhejiang Province, Cixi City, Baisha 315302 Peng min Lu No. 118 Patentee after: Ningbo Tiansheng Sealing Packing Co., Ltd. Address before: 315302 Zhejiang Province, Cixi city Hushanjiedao Qun Feng Cun Li Jia Nong Co-patentee before: Song Wei Patentee before: Li Xinggen Effective date of registration: 20110712 Address after: Zhejiang Province, Cixi City, Baisha 315302 Peng min Lu No. 118 Patentee after: Ningbo Tiansheng Sealing Packing Co., Ltd. Address before: 315302 Zhejiang Province, Cixi city Hushanjiedao Qun Feng Cun Li Jia Nong Co-patentee before: Song Wei Patentee before: Li Xinggen |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |