CN214305687U - Shape memory alloy pipeline coupling assembling - Google Patents
Shape memory alloy pipeline coupling assembling Download PDFInfo
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- CN214305687U CN214305687U CN202023164599.2U CN202023164599U CN214305687U CN 214305687 U CN214305687 U CN 214305687U CN 202023164599 U CN202023164599 U CN 202023164599U CN 214305687 U CN214305687 U CN 214305687U
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Abstract
The application relates to the technical field of shape memory alloy pipe joints, in particular to a shape memory alloy pipeline connecting assembly, which has the technical scheme that the connecting assembly comprises a first connecting pipe and a second connecting pipe which are coaxially arranged; the outer peripheral surface of the first connecting pipe is sleeved with a memory alloy jacket, and the memory alloy jacket is sleeved on the outer peripheral surface of the second connecting pipe at the same time; the inner peripheral surface of the first connecting pipe is provided with a memory alloy lining, and the memory alloy lining is arranged on the inner peripheral surface of the second connecting pipe; the shrinkage of the memory alloy jacket and the expansion of the memory alloy lining achieve the purpose of reducing the possibility of leakage caused by deformation of the pipeline joint and further ensuring more reliable pipeline connection.
Description
Technical Field
The application relates to the technical field of shape memory alloy pipe joints, in particular to a shape memory alloy pipeline connecting assembly.
Background
The pipeline connection is a very common connection structure in a mechanical power system; the quality of the pipe connection directly affects the transport performance and safety performance of the pipe.
One of the management connection methods described in the related art is to connect two connection pipes by welding at their ends close to each other.
In view of the above-mentioned related art solutions, the inventors found that: the welding joint is easy to generate larger welding deformation and welding residual stress, so that the bearing capacity, the processing precision and the dimensional stability of the joint are influenced; meanwhile, stress concentration is easy to occur at the junction of the welding seam and the connecting pipe, so that the condition of fatigue fracture at the connecting part of the pipeline is easy to occur; both of these conditions can cause leaks at the connection of the connecting tubes.
SUMMERY OF THE UTILITY MODEL
In order to reduce the pipeline junction and take place deformation and cause the possibility of revealing, and then make the pipe connection more reliable, this application provides a shape memory alloy pipeline coupling assembling.
The application provides a shape memory alloy pipeline coupling assembling adopts following technical scheme:
a shape memory alloy pipeline connecting component comprises a first connecting pipe and a second connecting pipe which are coaxially arranged; the peripheral surface of the first connecting pipe is sleeved with a memory alloy jacket, and the memory alloy jacket is sleeved on the peripheral surface of the second connecting pipe at the same time. The inner peripheral surface of the first connecting pipe is provided with a memory alloy lining in a sleeved mode, and the memory alloy lining is arranged on the inner peripheral surface of the second connecting pipe; the contraction of the memory alloy jacket and the expansion of the memory alloy lining play a role in sealing connection.
By adopting the technical scheme, when the pipeline connection is required, the memory alloy lining is arranged on the inner peripheral surface of the first connecting pipe, and then the memory alloy lining is inserted into the second connecting pipe to enable the second connecting pipe to be abutted against the first connecting pipe, so that the first connecting pipe and the second connecting pipe are coaxially arranged; at the moment, the memory alloy lining, particularly the joint of the first connecting pipe and the second connecting pipe, is heated by the hot air gun, the memory alloy lining expands in the heating process, the diameter of the memory alloy lining is increased, and the memory alloy lining is further stretched on the inner circumferential surfaces of the first connecting pipe and the second connecting pipe, so that the first connecting pipe and the second connecting pipe are connected. Sleeving a memory alloy jacket on the outer peripheral surface of the first connecting pipe, inserting the second connecting pipe into the memory alloy jacket, and enabling the second connecting pipe to be abutted against the first connecting pipe, so that the first connecting pipe and the second connecting pipe are coaxially arranged; at the moment, the memory alloy jacket, particularly the joint of the first connecting pipe and the second connecting pipe, is heated by the hot air gun, the memory alloy jacket shrinks in the heating process, the diameter of the memory alloy jacket is reduced, and the memory alloy jacket is tightly held on the outer peripheral surfaces of the first connecting pipe and the second connecting pipe, so that the first connecting pipe and the second connecting pipe are connected; because the internal stress of the shape memory alloy is distributed more uniformly, the possibility of deformation of the pipeline joint due to stress concentration is reduced, and the pipeline connection is more reliable.
Preferably, the circumferential surface of the memory alloy outer sleeve is sleeved with a plurality of memory alloy rings.
By adopting the technical scheme, the memory alloy rings are sleeved on the memory alloy jacket and are electrified, and because the memory alloy rings have resistance values, the temperature of the memory alloy rings rises in the electrifying process, the memory alloy rings shrink by heating, the diameter of the memory alloy rings shrinks in the process, and then the memory alloy rings are tightly held on the peripheral surface of the memory alloy jacket; therefore, the memory alloy ring exerts radial pressure on the memory alloy jacket, and the memory alloy jacket is further firmly sleeved on the circumferential surfaces of the first connecting pipe and the second connecting pipe so as to improve the reliability of pipeline connection.
Preferably, the plurality of memory alloy rings are respectively disposed outside the circumferential surfaces of the first and second connection pipes.
By adopting the technical scheme, the memory alloy ring can act on two ends of the memory alloy jacket simultaneously, so that the memory alloy jacket can be sleeved on the circumferential surfaces of the first connecting pipe and the second connecting pipe more stably.
Preferably, the memory alloy ring is provided with an insulating coating on its inner circumferential surface.
By adopting the technical scheme, the insulating coating can play an insulating role in the process of electrifying the memory alloy ring; and the insulating coating has certain wear resistance and corrosion resistance, so that the service life of the memory alloy ring is prolonged.
Preferably, a memory alloy lining is coaxially arranged in the hole of the first connecting pipe; the memory alloy lining is simultaneously inserted into the hole of the second connecting pipe.
By adopting the technical scheme, when the rigidity of the first connecting pipe and the second connecting pipe is poor, the first connecting pipe and the second connecting pipe can generate radial deformation in the process of being held tightly by the memory alloy jacket, and thus the good connecting effect cannot be achieved; inserting the memory alloy lining into the inner hole of the first connecting pipe, and extending a distance from the memory alloy lining to the direction close to the second connecting pipe from the inside of the first connecting pipe; inserting the hole wall of the second connecting pipe on the memory alloy lining; then, a hot air gun is used for heating the memory alloy lining, particularly the joint of the first connecting pipe and the second connecting pipe, the memory alloy lining expands under heat so as to increase the diameter of the memory alloy lining, and the peripheral wall of the memory alloy lining props open the hole walls of the first connecting ring pipe and the second connecting pipe to prevent the first connecting pipe or the second connecting pipe from being extruded and deformed by the memory alloy jacket; therefore, the memory alloy outer sleeve and the memory alloy inner lining respectively constrain the inner wall and the outer wall of the two connecting pipes, and the reliability of connection of the first connecting pipe and the second connecting pipe with poor rigidity is further improved.
Preferably, the connecting parts are formed at the ends, close to each other, of the first connecting pipe and the second connecting pipe by adopting a reaming process, and the diameters of the connecting parts are larger than those of the first connecting pipe and the second connecting pipe; the memory alloy jacket is sleeved on the outer walls of the two connecting parts; the memory alloy lining is arranged in the holes of the two connecting parts.
By adopting the technical scheme, the occupation of the memory alloy lining on the space in the first connecting pipe or the second connecting pipe hole can be reduced, and further the influence of the memory alloy lining on the pipeline flow is reduced.
Preferably, the circumferential surface of the memory alloy lining is coaxially provided with an annular positioning part, and the thickness of the positioning part is smaller than that of the first connecting pipe or the second connecting pipe; the end surface of the first connecting pipe, which is close to the second connecting pipe, is abutted against the end surface of the positioning part, which is close to the first connecting pipe; the end face of the second connecting pipe close to the first connecting pipe is abutted against the end face of the positioning part close to the second connecting pipe.
Through adopting above-mentioned technical scheme, when needs are connected first connecting pipe and second connecting pipe, with first connecting pipe and second connecting pipe respectively the butt can in the both ends of location portion, like this, play the positioning action to setting up of memory alloy inside lining, two parts length that the memory alloy inside lining is downthehole at first connecting pipe and second connecting pipe respectively is more even promptly, and then reduced the possibility that the memory alloy inside lining is partial to in first connecting pipe or second connecting pipe setting, the connection performance of memory alloy inside lining to first connecting pipe and second connecting pipe has been improved to a certain extent.
Preferably, the memory alloy lining is made of NiTiNb alloy; the memory alloy jacket is made of NiTiNb alloy; the memory alloy ring is made of NiTiNb alloy.
By adopting the technical scheme, the NiTiNb alloy has good processing and forming performance, and parts made of the alloy can be stored and transported at normal temperature, and are convenient to install, safe and reliable.
In summary, the present application has the following technical effects:
1. the memory alloy jacket is arranged, so that the first connecting pipe and the second connecting pipe are connected; because the internal stress of the shape memory alloy is distributed more uniformly, the possibility of deformation of the pipeline joint due to stress concentration is reduced, and the pipeline connection is more reliable;
2. the memory alloy ring is arranged and tightly embraced on the circumferential surface of the memory alloy jacket; therefore, the memory alloy ring exerts radial pressure on the memory alloy jacket, and the memory alloy jacket is further firmly sleeved on the peripheral surfaces of the first connecting pipe and the second connecting pipe so as to improve the reliability of pipeline connection;
3. by arranging the memory alloy lining, the peripheral wall of the memory alloy lining is propped open against the hole walls of the first connecting ring pipe and the second connecting pipe so as to prevent the first connecting pipe or the second connecting pipe from being extruded and deformed by the memory alloy jacket; therefore, the memory alloy outer sleeve and the memory alloy inner lining respectively constrain the inner wall and the outer wall of the two connecting pipes, and the reliability of connection of the first connecting pipe and the second connecting pipe with poor rigidity is further improved.
Drawings
Fig. 1 is an overall structural view of a connecting assembly in the first embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is an overall structural view of a connecting member in the second embodiment of the present application;
fig. 4 is an overall configuration diagram of a connection assembly in the third embodiment of the present application.
In the figure, 1, a first connecting pipe; 2. a second connecting pipe; 3. a memory alloy jacket; 4. a memory alloy ring; 41. an insulating coating; 5. a memory alloy liner; 51. a positioning part; 6. a connecting portion.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Example one
Referring to fig. 1, the present application provides a shape memory alloy pipeline connection assembly, including a first connection pipe 1 and a second connection pipe 2 to be connected, the first connection pipe 1 and the second connection pipe 2 being coaxially disposed; the peripheral surfaces of the first connecting pipe 1 and the second connecting pipe 2 are sleeved with a memory alloy outer sleeve 3 made of NiTiNb material; when the relative position of the first connecting pipe 1 and the second connecting pipe 2 needs to be fixed, the memory alloy jacket 3, particularly the position where the first connecting pipe 1 and the second connecting pipe 2 are connected, is heated by a hot air gun, in the heating process, the memory alloy jacket 3 is heated to shrink so that the diameter of the memory alloy jacket 3 shrinks to be smaller, the hole walls of the memory alloy jacket 3 are tightly held on the peripheral walls of the first connecting pipe 1 and the second connecting pipe 2 at the same time, and then the first connecting pipe 1 and the second connecting pipe 2 are fixedly connected; because the stress distribution of the shape memory alloy is more uniform in the process of heating and shrinking, the possibility of deformation of the pipeline joint due to stress concentration is further reduced, and the pipeline joint is more reliable.
Referring to fig. 1, six memory alloy rings 4 made of NiTiNb are sleeved on the circumferential surface of a memory alloy jacket 3, the six memory alloy rings 4 are divided into two groups, the two groups of memory alloy rings 4 are respectively sleeved at two ends of the memory alloy jacket 3 close to a first connecting pipe 1 or a second connecting pipe 2, and the three memory alloy rings 4 of each group are uniformly distributed along the axial direction of the memory alloy jacket 3; electrifying the memory alloy ring 4, wherein the memory alloy ring 4 has a certain resistance value, the temperature of the memory alloy ring 4 rises in the electrifying process, the memory alloy ring 4 is heated to shrink, and then the aperture of the memory alloy ring 4 is shrunk, the memory alloy rings 4 are simultaneously and tightly embraced on the peripheral surface of the memory alloy jacket 3, radial pressure is acted on the memory alloy jacket 3 to enable the memory alloy jacket 3 to be firmly and tightly embraced on the first connecting pipe 1 and the second connecting pipe 2, and the first connecting pipe 1 and the second connecting pipe 2 are more reliably connected.
Referring to fig. 1 and 2, an insulating coating 41 is coaxially arranged on the hole wall of the memory alloy ring 4, and the insulating coating 41 can play an insulating role in the process of electrifying the memory alloy ring 4; and the insulating coating 41 has certain wear resistance and corrosion resistance, so that the service life of the memory alloy ring 4 is prolonged.
Referring to fig. 1, a memory alloy lining 5 made of NiTiNb is disposed in the hole of the first connection pipe 1 and the hole of the second connection pipe 2 at the same time, that is, two ends of the memory alloy lining 5 are disposed in the holes of the first connection pipe 1 and the second connection pipe 2 respectively; heating the memory alloy lining 5, particularly the joint of the first connecting pipe 1 and the second connecting pipe 2 by using a hot air gun, wherein the memory alloy lining 5 expands due to heating, the diameter of the memory alloy lining 5 expands, the outer wall of the memory alloy lining 5 is abutted against the hole wall of the first connecting pipe 1 or the second connecting pipe 2, and the memory alloy lining 5 is further fixed inside the first connecting pipe 1 and the second connecting pipe 2 at the same time; because the memory alloy outer sleeve hugs closely when first connecting pipe 1 and second connecting pipe 2 on to the perisporium radial pressure of first connecting pipe 1 or second connecting pipe 2, when first connecting pipe 1 is relatively poor with the rigidity of second connecting pipe 2, first connecting pipe 1 and second connecting pipe 2 probably take place great radial deformation because of the pressurized, memory alloy inside lining 5's setting can hinder first connecting pipe 1 or second connecting pipe 2 to take place great deformation because of the pressurized, memory alloy overcoat's shrink and memory alloy inside lining expand the action, play sealing connection's effect, memory alloy inside lining 5 makes first connecting pipe 1 and second connecting pipe 2 link together more reliably with memory alloy overcoat 3 combined action promptly.
Example two
Referring to fig. 3, the difference between the second embodiment and the first embodiment is that a connecting portion 6 is formed at one end of each of the first connecting pipe 1 and the second connecting pipe 2, which is close to each other, by a broaching process, and the diameter of the connecting portion 6 is larger than that of the first connecting pipe 1 or the second connecting pipe 2; the memory alloy jacket 3 is sleeved on the peripheral surfaces of the two connecting parts 6; the memory alloy lining 5 is inserted into the holes of the two connecting parts 6; therefore, the occupation of the memory alloy lining 5 on the inner space of the hole of the first connecting pipe 1 or the second connecting pipe 2 can be reduced, and the influence of the memory alloy lining 5 on the flow of the pipeline is further reduced.
EXAMPLE III
Referring to fig. 4, the third embodiment is different from the first embodiment in that a positioning portion 51 is coaxially fixed on the circumferential surface of the memory alloy liner 5, and the positioning portion 51 is disposed at the middle position of the memory alloy liner 5; the outer diameter of the positioning part 51 is less than or equal to the inner diameter of the memory alloy outer sleeve 3; one end of the first connecting pipe 1 close to the second connecting pipe 2 is abutted against the end surface of the positioning part 51 close to the first connecting pipe 1; one end of the second connecting pipe 2 close to the first connecting pipe 1 is abutted against the end surface of the positioning part 51 close to the second connecting pipe 2; the positioning part 51 plays a positioning role in setting the memory alloy lining 5, namely the lengths of the two parts of the memory alloy lining 5 in the holes of the first connecting pipe 1 and the second connecting pipe 2 are more uniform, so that the possibility that the memory alloy lining 5 is deviated from the setting of the first connecting pipe 1 or the second connecting pipe 2 is reduced, and the connection performance of the memory alloy lining 5 to the first connecting pipe 1 and the second connecting pipe 2 is improved to a certain extent.
Example four
Referring to fig. 1, a memory alloy lining 5 made of NiTiNb is disposed in the hole of the first connection pipe 1 and the hole of the second connection pipe 2 at the same time, that is, two ends of the memory alloy lining 5 are disposed in the holes of the first connection pipe 1 and the second connection pipe 2 respectively; a hot air gun is utilized to heat the memory alloy lining 5, particularly the joint of the first connecting pipe 1 and the second connecting pipe 2, the memory alloy lining 5 is heated to expand, the diameter of the memory alloy lining is expanded, the outer wall of the memory alloy lining is abutted against the hole wall of the first connecting pipe 1 or the hole wall of the second connecting pipe 2, and the memory alloy lining 5 is further fixed inside the first connecting pipe 1 and the second connecting pipe 2 at the same time; the two groups of memory alloy rings 4 are respectively sleeved on the outer surfaces of the first connecting pipe 1 and the second connecting pipe 2, and the three memory alloy rings 4 in each group are axially and uniformly distributed on the outer surfaces of the first connecting pipe 1 and the second connecting pipe 2; the memory alloy rings 4 are electrified, the temperature rises during the electrifying process, the memory alloy rings shrink under heat, the memory alloy rings 4 simultaneously cling to the outer peripheral surfaces of the first connecting pipe 1 and the second connecting pipe 2, and radial force is generated. The memory alloy lining 5 and the memory alloy ring 4 work together to connect the first connecting pipe 1 and the second connecting pipe 2 together more reliably.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (7)
1. A shape memory alloy pipeline connecting component comprises a first connecting pipe (1) and a second connecting pipe (2) which are coaxially arranged; the method is characterized in that: the memory alloy jacket (3) is sleeved on the outer peripheral surface of the first connecting pipe (1), and the memory alloy jacket (3) is sleeved on the outer peripheral surface of the second connecting pipe (2) at the same time; a memory alloy lining (5) is arranged on the inner circumferential surface of the first connecting pipe (1), and the memory alloy lining (5) is simultaneously arranged on the inner circumferential surface of the second connecting pipe (2); the contraction of the memory alloy jacket (3) and the expansion of the memory alloy lining (5) play a role in sealing connection.
2. A shape memory alloy tubing connection assembly according to claim 1, wherein: the circumferential surface of the memory alloy jacket (3) is sleeved with a plurality of memory alloy rings (4).
3. A shape memory alloy tubing connection assembly according to claim 2, wherein: the memory alloy rings (4) are respectively arranged outside the peripheral surfaces of the first connecting pipe (1) and the second connecting pipe (2).
4. A shape memory alloy tubing connection assembly according to claim 3, wherein: an insulating coating (41) is arranged on the inner circular surface of the memory alloy ring (4).
5. A shape memory alloy tubing connection assembly according to claim 2, wherein: a memory alloy lining (5) is coaxially arranged in the hole of the first connecting pipe (1); the memory alloy lining (5) is simultaneously inserted into the hole of the second connecting pipe (2).
6. The shape memory alloy tubing connection assembly of claim 5, wherein: one ends, close to each other, of the first connecting pipe (1) and the second connecting pipe (2) are both provided with connecting parts (6) formed by a reaming process, and the diameters of the connecting parts (6) are larger than those of the first connecting pipe (1) and the second connecting pipe (2); the memory alloy jacket (3) is sleeved on the outer walls of the two connecting parts (6); the memory alloy lining (5) is arranged in the holes of the two connecting parts (6).
7. The shape memory alloy tubing connection assembly of claim 5, wherein: the circumferential surface of the memory alloy lining (5) is coaxially provided with an annular positioning part (51), and the thickness of the positioning part (51) is smaller than that of the first connecting pipe (1) or the second connecting pipe (2); the end surface of the first connecting pipe (1) close to the second connecting pipe (2) is abutted against the end surface of the positioning part (51) close to the first connecting pipe (1); the end surface of the second connecting pipe (2) close to the first connecting pipe (1) is abutted against the end surface of the positioning part (51) close to the second connecting pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023164599.2U CN214305687U (en) | 2020-12-24 | 2020-12-24 | Shape memory alloy pipeline coupling assembling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023164599.2U CN214305687U (en) | 2020-12-24 | 2020-12-24 | Shape memory alloy pipeline coupling assembling |
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| CN214305687U true CN214305687U (en) | 2021-09-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935063A (en) * | 2022-06-02 | 2022-08-23 | 太仓阿尔法数字科技有限公司 | Method and device for repairing memory alloy of pipeline |
| CN115197641A (en) * | 2022-08-08 | 2022-10-18 | 中国科学院光电技术研究所 | Electrically-controlled shape memory material and preparation method thereof |
-
2020
- 2020-12-24 CN CN202023164599.2U patent/CN214305687U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935063A (en) * | 2022-06-02 | 2022-08-23 | 太仓阿尔法数字科技有限公司 | Method and device for repairing memory alloy of pipeline |
| CN114935063B (en) * | 2022-06-02 | 2023-11-21 | 太仓阿尔法数字科技有限公司 | Pipeline memory alloy repairing method and device |
| CN115197641A (en) * | 2022-08-08 | 2022-10-18 | 中国科学院光电技术研究所 | Electrically-controlled shape memory material and preparation method thereof |
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