CN202301935U - Radial dual seal structure for thin-wall flange mortise under complicated working conditions - Google Patents
Radial dual seal structure for thin-wall flange mortise under complicated working conditions Download PDFInfo
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- CN202301935U CN202301935U CN 201120357489 CN201120357489U CN202301935U CN 202301935 U CN202301935 U CN 202301935U CN 201120357489 CN201120357489 CN 201120357489 CN 201120357489 U CN201120357489 U CN 201120357489U CN 202301935 U CN202301935 U CN 202301935U
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- flange
- groove
- tongue
- assembling
- pad
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Abstract
The utility model provides a radial dual seal structure for a thin-wall flange mortise under complicated working conditions, and is characterized in that a ring groove is arranged on the outer lateral surface of the top end of a lower flange, which is in contact with an upper flange, and the ring groove is a sealing groove for assembling a rubber sealing element; a ring groove is arranged on the end face of the lower flange, which is in contact with the upper flange, and the ring groove is a mortise for assembling a gasket, a lug boss extends from the end face of the upper flange on a position, which corresponds to the mortise for assembling the gasket, the lug boss is embedded into the mortise for assembling the gasket, a height value of the lug boss is equal to a depth of the mortise for assembling the gasket and greater than an inner slotting value of the flange. The radial dual seal structure for the thin-wall flange mortise under complicated working conditions, provided by the utility model, solves a sealing problem of a sealing structure in a strong corrosion medium environment under a deformation condition, the flange deformation is generated in an application process of a wide temperature range from low temperature to extreme high temperature, and after the rubber sealing element is in contact with a strong corrosion medium and is sealed at extreme high temperature, redundancy cannot be generated.
Description
Technical field
The utility model relates to a kind of flange seal structure, is specifically related to radially double sealing structure of a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition.
Background technique
Rubber seal is simple with its sealing configuration form, sealing reliability is high and receive application widely.Under the prerequisite that requires to allow in sealing technique, rubber seal always is first-selected scheme for sealing.Usually, according to requirements such as serviceability temperature, Environmental Conditions, sealing loads, select corresponding rubber seal for use, flange facing reaches tight seamless link about requiring simultaneously, thereby guarantees the reliable sealing requirement.Yet, under some particular case, owing to receive the restriction of assembly space constraint and loss of weight requirement; Can't design large-scale thick and heavy sealing configuration, require the flange design of sealing configuration must be in light weight, thin thickness, assembling be flexible, this kind sealing configuration can produce distortion in assembly process; And in the high temperature using process, also can produce distortion; These distortion all cause flange facing increases of cracking, therefore, and the conventional seals structural design of use rubber seal; Can't satisfy the sealing usage requirement, need carry out and satisfy sealing is used about rubber seal lightweight, assembling flexibly and the sealing configuration research that produces distortion in the using process.On the other hand, the General Purpose Rubber material influences the normal use of exquisite systems such as valve contacting the back with strong corrosive medium at elevated-temperature seal using process meeting generation fifth wheel.
Summary of the invention
The purpose of the utility model is to provide a kind of radially double sealing structure and application of thin-walled flange tongue-and-groove that is used for the complex working condition condition, and it produces flange distortion and rubber seal and contacts the back with strong corrosive media and after its limit high temperature lower seal uses, do not produce fifth wheel in the wide temperature territory using process of low temperature to its limit high temperature.Wherein said flange distortion comes from the distortion that produces in distortion that normal temperature assembling produces and the elevated-temperature seal using process, and the distortion that the normal temperature assembling produces makes up and down the flanged surface outside maximum of cracking reach 0.2mm; The distortion that produces in the elevated-temperature seal using process makes the flange inside maximum of cracking reach 3mm, and the sealing surface of placing the rubber seal place maximum of cracking reaches 2mm.
The described a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition of the utility model is the double sealing structure radially; Wherein lower flange embeds in the upper flange; Block lower flange through the kink ring again, several parts that apply the flange pretightening force through circumferential setting pass being fastenedly connected of kink ring and the upper flange last lower flange of realization simultaneously; On the lower flange top outer side surface of upper flange contact, offer annular groove, be the seal groove of assembling rubber seal; On the lower flange end face of upper flange contact, also offering annular groove; Tongue-and-groove for the assembling pad; On the upper flange end face of the tongue-and-groove position of correspondence assembling pad, extend a boss; This boss embeds in the tongue-and-groove of assembling pad, the deep equality of the height value of boss and the tongue-and-groove of assembling pad and greater than the flange inside value of cracking; The assembling rubber seal seal groove in place rubber seal, this rubber seal decrement 25～40%; In the tongue-and-groove of assembling pad, place the pad match with its shape, cracking smaller or equal to 0.2mm the height of this pad applies behind the parts of flange pretightening force between the upper flange and lower flange end face with assembling outside is benchmark; The tenon in the described tongue-and-groove that is opened in the assembling pad on the lower flange end face and the matching gap of groove sidewall are 0.05～0.6mm.
Aforesaid a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition is the double sealing structure radially; One or more triangular grooves are offered in its described tongue-and-groove bottom that is opened in the assembling pad on the lower flange end face, and it is protruding that the one or more triangles that match are offered on upper flange end face the extended boss bottom corresponding with it.
Aforesaid a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition is the double sealing structure radially, and gasket material that it is said to be placed in the tongue-and-groove of assembling pad is selected teflon or soft aluminium material for use; The internal diameter of said pad and outside dimension are as the criterion to reach to closely cooperate with the internal diameter of tongue-and-groove and outside dimension.
Aforesaid a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition is the double sealing structure radially, and it is described to be placed on rubber seal material selection fluorine rubber or fluoroether rubber or the ethylene propylene rubber in the seal groove of assembling rubber seal.
Aforesaid a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition is the double sealing structure radially, and its described upper flange and lower flange are selected steel or aluminium material for use; The end surface thickness of described upper flange or lower flange is at 8mm～16mm; The described parts that apply the flange pretightening force are screw bolt and nut.
The effect of the utility model is:
The utility model is described to be used for the flange tongue-and-groove double sealing structure radially under the complex working condition condition; It adopts flange double sealing structural type; Inner seal adopts tongue-and-groove and pad; Rubber seal is adopted in outer side sealing; Solved the sealing problem of strong corrosive medium environment lower seal structure under texturizing condition, said distortion comes from the distortion that produces in distortion that normal temperature assembling produces and the elevated-temperature seal using process, and wherein the distortion that produces of normal temperature assembling makes up and down the flanged surface outside maximum of cracking reach 0.2mm; The distortion that produces in the elevated-temperature seal using process makes the flange inside maximum of cracking reach 3mm, and the sealing surface of placing the rubber seal place maximum of cracking reaches 2mm.
The utility model has carried out above-mentioned sealing configuration flange in the wide temperature territory using process of-60 ℃～rubber seal limit high temperature respectively and has produced under the texturizing condition and rubber seal contact the back and simulates certification test in the sealing of its limit high temperature use with strong corrosive media; Test result shows that sealing configuration does not leak, and does not produce fifth wheel.Wherein, the maximum of cracking outside the flanged surface about the distortion of normal temperature assembling generation makes reaches 0.2mm; The distortion that produces in the elevated-temperature seal using process makes the flange inside maximum of cracking reach 3mm, and the sealing surface of placing the rubber seal place maximum of cracking reaches 2mm.
Description of drawings
Fig. 1 is a radially double sealing structural representation of the described a kind of flange tongue-and-groove of the utility model;
Fig. 2 is that tongue-and-groove cooperates schematic representation with upper flange.
Among the figure: the 1-upper flange; The 2-lower flange; The tongue-and-groove of 3-assembling pad; The seal groove of 4-assembling rubber seal; 5-applies the parts of flange pretightening force; 6-kink ring.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment to the described thin-walled flange tongue-and-groove that is used for the complex working condition condition of the utility model double sealing structure and should be radially as further describing.
Embodiment 1
As shown in Figure 1; This is used for the flange tongue-and-groove double sealing structure radially under the complex working condition condition; Its lower flange 2 embeds in the upper flange 1; Block lower flange 2 through kink ring 6 again, several parts 5 (employing screw bolt and nut) that apply the flange pretightening force through circumferential setting pass being fastenedly connected of kink ring 6 and the upper flange 1 last lower flange of realization simultaneously.The material of upper flange is 5A06, and the upper flange end surface thickness is 16mm; The material of lower flange is 1Cr18Ni9Ti, and the lower flange end surface thickness is 8mm.
On the lower flange 2 top outer side surfaces of upper flange 1 contact, offer annular groove, be the seal groove 4 of assembling rubber seal.The width of seal groove 4 is 2.25mm, and the degree of depth is 4mm.In the seal groove 4 of assembling rubber seal, place rubber seal, this rubber seal is that cross-section size is the fluoroether rubber O-ring seals of Φ 3, rubber seal decrement 25%.
As shown in Figure 2; On lower flange 2 end faces of upper flange 1 contact, also offering annular groove; Tongue-and-groove 3 for the assembling pad; On upper flange 1 end face of tongue-and-groove 3 positions of correspondence assembling pad, extend a boss; This boss embeds in the tongue-and-groove 3 of assembling pad; The nominal altitude value H1 of boss equates with the nominal depth value H2 of the tongue-and-groove 3 of assembling pad; Be H1=H2=3.2, tolerance wherein is
,
.
The equilateral triangle convexity that it is 0.5mm that the tongue-and-groove 3 bottoms equilateral triangle groove that to offer a length of side be 0.5mm of assembling pad, on upper flange 1 end face the extended boss bottom corresponding with it are offered the length of side matching.The matching gap of tenon in the tongue-and-groove 3 and groove sidewall is 0.45mm.
Placement matches with its shape in the tongue-and-groove 3 of assembling pad, highly be the teflon gasket of
mm.The internal diameter of this pad and outside dimension are as the criterion to reach to fit tightly with the internal diameter of tongue-and-groove 3 and outside dimension.
This is used for flange tongue-and-groove under the complex working condition condition, and radially the assembly process of double sealing structure is following: teflon gasket is installed on tongue-and-groove 3; The fluoroether rubber O-ring seals is installed in the seal groove 4, places kink ring 6 at lower flange 2 places, adopt torque spanner then; Each bolt is tightened symmetrically; Divide 4～5 times the Bolt Tightening Force square to be added to 20N.m, then, along the circumferential direction calibrate moment twice.Adopt feeler gauge, recording maximal clearance, the lower flange outside is 0.2mm.
Sealing configuration to above-mentioned assembling; Carried out-60 ℃ of leakage tests respectively, the leakage test under (contact pressure the is 0.4MPa) condition that contacts 150 hours at 40 ℃ with the dinitrogen tetroxide gas phase media, with normal temperature after the dinitrogen tetroxide gas phase media contacts, low temperature-20 ℃ and high temperature 355 ℃ of (test periods 25 minutes; Test pressure 1.2MPa) leakage test, test result shows: in above-mentioned process of the test, all do not leak.After the test frock was cooled to normal temperature, through overhaul, cracked and reach 3.01mm in test flange inside, and the sealing surface of placing the rubber seal place cracks and reaches 2.02mm, does not have fifth wheel in the cavity of test frock.
Embodiment 2
As shown in Figure 1; This is used for the flange tongue-and-groove double sealing structure radially under the complex working condition condition; Its lower flange 2 embeds in the upper flange 1; Block lower flange 2 through kink ring 6 again, several parts 5 (employing screw bolt and nut) that apply the flange pretightening force through circumferential setting pass being fastenedly connected of kink ring 6 and the upper flange 1 last lower flange of realization simultaneously.The material of upper flange is 2A12, and the upper flange end surface thickness is 15mm; The material of lower flange is 1Cr18Ni9Ti, and the lower flange end surface thickness is 8mm.
On the lower flange 2 top outer side surfaces of upper flange 1 contact, offer annular groove, be the seal groove 4 of assembling rubber seal.The width of seal groove 4 is 1.8mm, and the degree of depth is 4mm.In the seal groove 4 of assembling rubber seal, place rubber seal, this rubber seal is that cross-section size is the ethylene propylene rubber O type Sealing of Φ 3, the decrement 40% of rubber seal.
As shown in Figure 2; On lower flange 2 end faces of upper flange 1 contact, also offering annular groove; Tongue-and-groove 3 for the assembling pad; On upper flange 1 end face of tongue-and-groove 3 positions of correspondence assembling pad, extend a boss; This boss embeds in the tongue-and-groove 3 of assembling pad; The nominal altitude value H1 of boss equates with the nominal depth value H2 of the tongue-and-groove 3 of assembling pad; Be H1=H2=4, tolerance wherein is
,
.
Tongue-and-groove 3 bottoms of assembling pad offer summit downward, the length of side is the equilateral triangle groove of 0.6mm, the equilateral triangle convexity that it is 0.6mm that the length of side matching is offered on upper flange 1 end face the extended boss bottom corresponding with it.The middle tenon of tongue-and-groove 3 and the matching gap of groove sidewall are 0.6mm.
Placement matches with its shape in the tongue-and-groove 3 of assembling pad, highly be the soft aluminium backing of
mm.
This is used for flange tongue-and-groove under the complex working condition condition, and radially the assembly process of double sealing structure is following: soft aluminium backing is installed on tongue-and-groove 3; The ethylene propylene rubber O-ring seals is installed in the seal groove 4, places the kink ring at the lower flange place, adopt torque spanner then; Each bolt is tightened symmetrically; Divide 4～5 times the Bolt Tightening Force square to be added to 50N.m, then, along the circumferential direction calibrate moment twice.Adopt feeler gauge, recording maximal clearance, the lower flange outside is 0.20mm.
Sealing configuration to above-mentioned assembling; Carried out-60 ℃ of leakage tests respectively, the leakage test under (contact pressure the is 0.5MPa) condition that contacts 150 hours at 40 ℃ with the uns-dimethylhydrazine gas phase media, with normal temperature after the uns-dimethylhydrazine gas phase media contacts, low temperature-20 ℃ and high temperature 360 ℃ of (test periods 22 minutes; Test pressure 1.05MPa) leakage test, test result shows: in above-mentioned process of the test, all do not leak.After the test frock was cooled to normal temperature, through overhaul, cracked and reach 2.98mm in test flange inside, and the sealing surface of placing the rubber seal place cracks and reaches 2.01mm, does not have fifth wheel in the cavity of test frock.
Claims (5)
1. a thin-walled flange tongue-and-groove that is used for complex working condition condition double sealing structure radially; Wherein lower flange (2) embeds in the upper flange (1); Block lower flange (2) through kink ring (6) again; Several parts (5) that apply the flange pretightening force through circumferential setting pass being fastenedly connected of lower flange in kink ring (6) and upper flange (1) realization simultaneously, and it is characterized in that: on lower flange (2) the top outer side surface of upper flange (1) contact, offering annular groove, is the seal groove (4) of assembling rubber seal; On lower flange (2) end face of upper flange (1) contact, also offering annular groove; Tongue-and-groove (3) for the assembling pad; On upper flange (1) end face of tongue-and-groove (3) position of correspondence assembling pad, extend a boss; This boss embeds in the tongue-and-groove (3) of assembling pad, the deep equality of the height value of boss and the tongue-and-groove (3) of assembling pad and greater than the flange inside value of cracking; The assembling rubber seal seal groove (4) in the placement rubber seal, this rubber seal decrement 25～40%; In the tongue-and-groove (3) of assembling pad, place the pad match with its shape, it is benchmark that the parts (5) that the height of this pad applies the flange pretightening force with assembling crack smaller or equal to 0.2mm outside afterwards between upper flange (1) and lower flange (2) end face; The tenon in the described tongue-and-groove (3) that is opened in the assembling pad on lower flange (2) end face and the matching gap of groove sidewall are 0.05～0.6mm.
2. a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition according to claim 1 is the double sealing structure radially; It is characterized in that: one or more triangular grooves are offered in described tongue-and-groove (3) bottom that is opened in the assembling pad on lower flange (2) end face, and it is protruding that the one or more triangles that match are offered on upper flange (1) end face the extended boss bottom corresponding with it.
3. a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition according to claim 1 is the double sealing structure radially, it is characterized in that: the gasket material in the said tongue-and-groove (3) that is placed on the assembling pad is selected teflon or soft aluminium material for use; The internal diameter of said pad and outside dimension are as the criterion to reach to closely cooperate with the internal diameter of tongue-and-groove (3) and outside dimension.
4. a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition according to claim 1 is the double sealing structure radially, it is characterized in that: rubber seal material selection fluorine rubber or fluoroether rubber or ethylene propylene rubber in the described seal groove (4) that is placed on the assembling rubber seal.
5. a kind of thin-walled flange tongue-and-groove that is used for the complex working condition condition according to claim 1 is the double sealing structure radially, and it is characterized in that: described upper flange (1) and lower flange (2) are selected steel or aluminium material for use; The end surface thickness of described upper flange (1) or lower flange (2) is at 8mm～16mm; The described parts (5) that apply the flange pretightening force are screw bolt and nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120357489 CN202301935U (en) | 2011-09-22 | 2011-09-22 | Radial dual seal structure for thin-wall flange mortise under complicated working conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120357489 CN202301935U (en) | 2011-09-22 | 2011-09-22 | Radial dual seal structure for thin-wall flange mortise under complicated working conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202301935U true CN202301935U (en) | 2012-07-04 |
Family
ID=46370833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120357489 Expired - Lifetime CN202301935U (en) | 2011-09-22 | 2011-09-22 | Radial dual seal structure for thin-wall flange mortise under complicated working conditions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202301935U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367871A (en) * | 2011-09-22 | 2012-03-07 | 航天材料及工艺研究所 | Thin-wall flange tongue-and-groove dual-way seal structure of for complex working conditions and applications thereof |
| CN114810836A (en) * | 2022-04-28 | 2022-07-29 | 洛阳轴承研究所有限公司 | Wide temperature adaptation type bearing seal structure |
-
2011
- 2011-09-22 CN CN 201120357489 patent/CN202301935U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367871A (en) * | 2011-09-22 | 2012-03-07 | 航天材料及工艺研究所 | Thin-wall flange tongue-and-groove dual-way seal structure of for complex working conditions and applications thereof |
| CN102367871B (en) * | 2011-09-22 | 2016-01-27 | 航天材料及工艺研究所 | For thin-wall flange mortise double-channel sealing structure and the application of complex working conditions |
| CN114810836A (en) * | 2022-04-28 | 2022-07-29 | 洛阳轴承研究所有限公司 | Wide temperature adaptation type bearing seal structure |
| CN114810836B (en) * | 2022-04-28 | 2024-03-26 | 洛阳轴承研究所有限公司 | Wide temperature adaptation type bearing sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Bai Xiangyun Inventor after: Wang Bangwu Inventor after: Wang Lifeng Inventor after: Wu Fudi Inventor after: Mu Han Inventor after: Niu Baolin Inventor before: Bai Xiangyun Inventor before: Wang Bangwu Inventor before: Wang Lifeng Inventor before: Wu Fudi |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: BAI XIANGYUN WANG BANGWU WANG LIFENG WU FUDI TO: BAI XIANGYUN WANG BANGWU WANG LIFENG WU FUDI MU HAN NIU BAOLIN |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |