CN206054733U - A kind of memorial alloy ring seal device - Google Patents
A kind of memorial alloy ring seal device Download PDFInfo
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- CN206054733U CN206054733U CN201620916074.4U CN201620916074U CN206054733U CN 206054733 U CN206054733 U CN 206054733U CN 201620916074 U CN201620916074 U CN 201620916074U CN 206054733 U CN206054733 U CN 206054733U
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- Prior art keywords
- memorial alloy
- shape
- outer tube
- circle
- external memory
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Abstract
The utility model discloses a kind of memorial alloy ring seal device, mainly including outer tube, memorial alloy circle and end cap, memorial alloy circle is divided into External Memory alloy ring and interior memorial alloy circle to the device.During intensification phase transformation, memorial alloy circle is changed into high-temperature-phase shape, and the shape overall shrinkage of External Memory alloy ring, the shape entirety swell of interior memorial alloy circle can realize sealing function to the liquid in thin-walled outer tube device or gas medium.During cooling phase transformation, memorial alloy circle is changed into low-temperature phase shape, and the shape entirety swell of External Memory alloy ring, the shape overall shrinkage of interior memorial alloy circle can carry out free dismounting to sealing device.Under sealing state, the theoretical value zero of making a concerted effort that External Memory alloy ring and interior memorial alloy circle are produced on thin-walled outer tube surfaces externally and internally, the risk of leakage that thin-walled outer tube one side stress deformation can be avoided to bring.Memorial alloy ring seal device sealing life of the present utility model is long, and will not reduce the medium-tight effect in thin-walled outer tube device.
Description
Technical field
This utility model belongs to technical field of sealing technology, and in particular to a kind of memorial alloy ring seal device.
Background technology
At present, mainly there are two kinds for the sealing means of liquid medium or gas medium in thin-walled outer tube device, first,
Built-in elastic seal with elastometic washer mode.First, elastic rubber ring is put in the radial seal groove of axial workpiece；Then, will
Axial workpiece and elastic rubber ring together fill in thin-walled outer tube endoporus, and the realization on thin-walled outer tube inner cylinder face radially contacts with close
Envelope.When radially contacting with pressure and being excessive, it will cause stress deformation on the inside of at thin-walled outer tube seal interface to produce risk of leakage, together
When, prolongation over time radially contacts with power reduction, can also produce risk of leakage, after these after the elastic rubber ring life-span is aging
Fruit can all reduce its sealing property.Second, external memorial alloy circle sealing means, this kind of memorial alloy usually imitate by one-way memory
The alloy answered.First, external memorial alloy circle endoporus is expanded under low temperature state；Then, external memorial alloy snare is filled
In two sections of thin-walled outer tube butt joint interface positions；Finally, external memorial alloy circle is heated, when which produces intensification phase transformation, shape
Overall shrinkage, on thin-walled outer tube external cylindrical surface realizes radially contacting with sealing.When radially contacting with pressure and being excessive, it will cause thin
On the outside of at wall outer tube seal interface, stress deformation produces risk of leakage, and this can reduce its sealing property.In patent CN2828507 and
In US6498952, propose by the use of the temperature memory effect of memorial alloy carries out the assembling of elastic rubber ring as driving force,
Its invention thought is that elastic rubber ring is assembled between memorial alloy and connected tube, produces intensification phase when temperature exceedes room temperature
During change, memorial alloy is punctured into predetermined shape, and elastic rubber ring overall dimensions are compressed by the contractility of generation, in connected tube
Realize radially contacting with sealing on external cylindrical surface.But, the sealing means involved by these patents are primarily adapted for use in heavy wall and are connected
Pipe, and the sealing of thin-walled outer tube device cannot be applied to.
The content of the invention
Technical problem to be solved in the utility model there is provided a kind of memorial alloy ring seal device.
Memorial alloy ring seal device of the present utility model, including outer tube, memorial alloy circle and end cap, are characterized in：Institute
The memorial alloy circle stated is divided into External Memory alloy ring and interior memorial alloy circle, and outer tube is cylindrical shape, and one end of cylinder is close with end cap
Envelope, the other end are opened, memorial alloy circle in the inner surface suit of outer tube, outer surface suit External Memory alloy ring；
Described External Memory alloy loop-shaped is tight with the outer cylinder surface II of the outer cylinder surface I of outer tube and end cap after shrinking
Contiguity is touched, and the outer cylinder surface II of outer cylinder surface I and end cap after External Memory alloy loop-shaped swell with outer tube is completely disengaged from,
The inner periphery II of inner periphery I and end cap after interior memorial alloy loop-shaped swell with outer tube is in close contact, interior memory
Completely disengage from the inner periphery II of the inner periphery I and end cap of outer tube after the contraction of alloy loop-shaped；
Described External Memory alloy ring and interior memorial alloy loop material are the marmems with double-pass memory effect.
Described marmem be NiTi base memorial alloy, the percentage by weight of each component in NiTi base memorial alloy
For：
Titanium 35% ~ 38%；
Nickel 47% ~ 52%；
Niobium 13% ~ 15%.
Described External Memory alloy ring from room temperature environment carry out intensification phase transformation when, shape can overall shrinkage, be changed into high-temperature-phase
Shape；External Memory alloy ring from room temperature environment carry out cooling phase transformation when, shape can overall swell, be changed into low-temperature phase shape.
Described interior memorial alloy circle from room temperature environment carry out intensification phase transformation when, shape can overall swell, be changed into high-temperature-phase
Shape；Interior memorial alloy circle from room temperature environment carry out cooling phase transformation when, shape can overall shrinkage, be changed into low-temperature phase shape.
Memorial alloy ring seal device principle of the present utility model is：During intensification phase transformation, memorial alloy circle is changed into high-temperature-phase
Shape, wherein, the shape overall shrinkage of External Memory alloy ring, the shape entirety swell of interior memorial alloy circle, so as to can be to thin-walled
Liquid or gas medium in outer tube device realizes sealing function.During cooling phase transformation, memorial alloy circle is changed into low-temperature phase shape, its
In, the shape entirety swell of External Memory alloy ring, the shape overall shrinkage of interior memorial alloy circle, so as to carry out to sealing device
Freely dismantle.
Memorial alloy ring seal device of the present utility model realizes thin-walled using the double-pass memory effect of marmem
Outer tube device being tightly connected and freely dismantles.On the one hand, start to warm up from room temperature environment, when the high-temperature-phase for reaching memorial alloy
During height, the shape overall shrinkage of External Memory alloy ring, the shape entirety swell of interior memorial alloy circle, so as to can be to thin-walled outer tube
Liquid or gas medium in device realizes sealing function.On the other hand, start cooling from room temperature environment, when reaching memorial alloy
Low-temperature phase height when, the shape entirety swell of External Memory alloy ring, the shape overall shrinkage of interior memorial alloy circle, so as to can be right
Sealing device carries out free dismounting.Under sealing state, the External Memory alloy ring of the device and interior memorial alloy circle are in thin-walled outer tube
The theoretical value zero of making a concerted effort produced at butt joint interface, the risk of leakage that thin-walled outer tube one side stress deformation can be avoided to bring,
Ensure the life-span problem of aging brought using elastic rubber ring to be avoided while sealing effectiveness, effectively extend sealing device
Service life.
Memorial alloy ring seal device of the present utility model is a kind of memorial alloy circle sealing dress suitable for thin-walled outer tube
Put.Memorial alloy ring seal device of the present utility model is realized in thin-walled outer tube device using the memorial alloy circle of alloy material
The sealing of liquid medium or gas medium, in sealed states, External Memory alloy ring and interior memorial alloy circle are in thin-walled outer tube pair
The theoretical value zero of making a concerted effort of interface generation is connect, such that it is able to the risk of leakage for avoiding thin-walled outer tube one side stress deformation from bringing,
Meanwhile, it also avoid after the elastic rubber ring life-span is aging, radially contacting with the leakage hidden danger that power reduces bringing.
Description of the drawings
Fig. 1 is the sealing confined state sectional view of memorial alloy ring seal device of the present utility model；
Fig. 2 is the free confined state sectional view of memorial alloy ring seal device of the present utility model.
In figure, 1. 11. inner periphery of outer tube, I 12. outer cylinder surface, I 13. butt joint interface, I 2. External Memory alloy ring
3. 4. end cap of memorial alloy circle, 41. inner periphery, II 42. outer cylinder surface, II 43. butt joint interface II in.
Specific embodiment
Describe this utility model below in conjunction with the accompanying drawings in detail.
As shown in Figure 1 and Figure 2, memorial alloy ring seal device of the present utility model, including outer tube 1, memorial alloy circle and end
Lid 4, described memorial alloy circle are divided into External Memory alloy ring 2 and interior memorial alloy circle 3, and outer tube 1 is cylindrical shape, one end of cylinder
Sealed with end cap 4, the other end is opened, memorial alloy circle 3 in the inner surface suit of outer tube 1, outer surface suit External Memory alloy ring
2；
Outside cylinder table after described 2 shape of External Memory alloy ring contraction with the outer cylinder surface I 12 and end cap 4 of outer tube 1
Face II 42 is in close contact, the outside cylinder table after 2 shape swell of External Memory alloy ring with the outer cylinder surface I 12 and end cap 4 of outer tube 1
Face II 42 completely disengages from, with the inner periphery I 11 of outer tube 1 and the interior cylinder table of end cap 4 after 3 shape swell of interior memorial alloy circle
Face II 41 is in close contact, with the inner periphery I 11 of outer tube 1 and the interior cylinder table of end cap 4 after interior 3 shape of memorial alloy circle contraction
Face II 41 completely disengages from；
Described External Memory alloy ring 2 and interior 3 material of memorial alloy circle are that the shape memory with double-pass memory effect is closed
Gold, specially NiTi base memorial alloy, the typical composition of NiTi base memorial alloy are that the percentage by weight of titanium is 35% ~ 38%, nickel
Percentage by weight be 47% ~ 52%, the percentage by weight of niobium is 13% ~ 15%.This kind of NiTi base memorial alloy can carry out high temperature
Phase transformation shape is shunk and the shape memory of low temperature phase change shape swell is trained, it is also possible to carry out high-temperature phase-change shape swell and low temperature
The shape memory training that phase transformation shape is shunk.
Described External Memory alloy ring 2 from room temperature environment carry out intensification phase transformation when, shape can overall shrinkage, be changed into high-temperature-phase
Shape；When carrying out cooling phase transformation from room temperature environment, the overall swell of shape meeting is changed into low-temperature phase shape.
Described interior memorial alloy circle 3 from room temperature environment carry out intensification phase transformation when, shape can overall swell, be changed into high-temperature-phase
Shape；Interior memorial alloy circle 3 from room temperature environment carry out cooling phase transformation when, shape can overall shrinkage, be changed into low-temperature phase shape.
In Fig. 1, between 20 DEG C ~ 30 DEG C, external memorial alloy circle 2 and interior memorial alloy circle 3 are carried out for the temperature of room temperature environment
Local heating, when the temperature of External Memory alloy ring 2 and interior memorial alloy circle 3 reaches a high temperature transformation temperature from room temperature, External Memory is closed
The shape overall shrinkage of gold ring 2, the shape entirety swell of interior memorial alloy circle 3, so as to can be to the liquid in thin-walled outer tube device
Or gas medium realizes sealing function.
In Fig. 2, between 20 DEG C ~ 30 DEG C, external memorial alloy circle 2 and interior memorial alloy circle 3 are carried out for the temperature of room temperature environment
Local cooling, when the temperature of External Memory alloy ring 2 and interior memorial alloy circle 3 reaches low-temperature phase height from room temperature, External Memory is closed
The shape entirety swell of gold ring 2, the shape overall shrinkage of interior memorial alloy circle 3, depressurization state, so as to can be to sealing device
Carry out free dismounting.
Memorial alloy ring seal device of the present utility model is realized thin using the double-pass memory effect of marmem
Being tightly connected and freely dismantling for wall outer tube device, seals under confined state, and the External Memory alloy ring 2 of the device is in outer tube 1 pair
Inside compression stress is produced at 4 butt joint interface II 43 of junction face I 13 and end capF, interior memorial alloy circle 3 is in 1 butt joint interface I of outer tube
13 and 4 butt joint interface II 43 of end cap at produce outside compression stressF´, inside compression stressFWith outside compression stressF´Make a concerted effort
Can be zero in theory, so as to be avoided that the thin-walled outer tube one side risk of leakage brought of stress deformation.Note of the present utility model
Recall alloy ring seal device and the life-span problem of aging brought using elastic rubber ring is avoided while sealing effectiveness is ensured, have
Effect extends the service life of sealing device.
This utility model is not limited to above-mentioned specific embodiment, and person of ordinary skill in the field is visualized from above-mentioned
Send out, without performing creative labour, a variety of conversion made, all fall within protection domain of the present utility model.
Claims (3)
1. a kind of memorial alloy ring seal device, including outer tube（1）, memorial alloy circle and end cap（4）, it is characterised in that：It is described
Memorial alloy circle be divided into External Memory alloy ring（2）With interior memorial alloy circle（3）, outer tube（1）For cylindrical shape, one end of cylinder is used
End cap（4）Sealing, the other end are opened, outer tube（1）Inner surface suit in memorial alloy circle（3）, outer surface suit External Memory conjunction
Gold ring（2）；
Described External Memory alloy ring（2）With outer tube after shape contraction（1）Outer cylinder surface I（12）And end cap（4）It is cylindrical
Post surface II（42）It is in close contact, External Memory alloy ring（2）With outer tube after shape swell（1）Outer cylinder surface I（12）And end
Lid（4）Outer cylinder surface II（42）Completely disengage from, interior memorial alloy circle（3）With outer tube after shape swell（1）Interior cylinder table
Face I（11）And end cap（4）Inner periphery II（41）It is in close contact, interior memorial alloy circle（3）With outer tube after shape contraction（1）
Inner periphery I（11）And end cap（4）Inner periphery II（41）Completely disengage from；
Described External Memory alloy ring（2）With interior memorial alloy circle（3）Material be the shape memory with double-pass memory effect
Alloy.
2. memorial alloy ring seal device according to claim 1, it is characterised in that：Described External Memory alloy ring（2）
When carrying out intensification phase transformation from room temperature environment, shape meeting overall shrinkage is changed into high-temperature-phase shape；External Memory alloy ring（2）From room temperature
When environment carries out cooling phase transformation, the overall swell of shape meeting is changed into low-temperature phase shape.
3. memorial alloy ring seal device according to claim 1, it is characterised in that：Described interior memorial alloy circle（3）
When carrying out intensification phase transformation from room temperature environment, the overall swell of shape meeting is changed into high-temperature-phase shape；Interior memorial alloy circle（3）From room temperature
When environment carries out cooling phase transformation, shape meeting overall shrinkage is changed into low-temperature phase shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620916074.4U CN206054733U (en) | 2016-08-23 | 2016-08-23 | A kind of memorial alloy ring seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620916074.4U CN206054733U (en) | 2016-08-23 | 2016-08-23 | A kind of memorial alloy ring seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206054733U true CN206054733U (en) | 2017-03-29 |
Family
ID=58383587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620916074.4U Expired - Fee Related CN206054733U (en) | 2016-08-23 | 2016-08-23 | A kind of memorial alloy ring seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206054733U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065948A (en) * | 2016-08-23 | 2016-11-02 | 中国工程物理研究院电子工程研究所 | A kind of memorial alloy ring seal device |
| US10995859B2 (en) | 2018-04-26 | 2021-05-04 | Honda Motor Co., Ltd. | Thermally actuated grommet |
-
2016
- 2016-08-23 CN CN201620916074.4U patent/CN206054733U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065948A (en) * | 2016-08-23 | 2016-11-02 | 中国工程物理研究院电子工程研究所 | A kind of memorial alloy ring seal device |
| US10995859B2 (en) | 2018-04-26 | 2021-05-04 | Honda Motor Co., Ltd. | Thermally actuated grommet |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20190823 |