CN201259028Y - Shape memory alloy pipe joint for pipeline fastening connection - Google Patents
Shape memory alloy pipe joint for pipeline fastening connection Download PDFInfo
- Publication number
- CN201259028Y CN201259028Y CNU200820110319XU CN200820110319U CN201259028Y CN 201259028 Y CN201259028 Y CN 201259028Y CN U200820110319X U CNU200820110319X U CN U200820110319XU CN 200820110319 U CN200820110319 U CN 200820110319U CN 201259028 Y CN201259028 Y CN 201259028Y
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- China
- Prior art keywords
- pipe joint
- memory alloy
- shape memory
- alloy pipe
- coating
- 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
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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model belongs to a joint device, in particular to a shape memory alloy pipe joint used for the fastening and connecting of pipelines. The inner surface of the shape memory alloy pipe joint is provided with a single-layer, a double-layer or a multi-layer coating; the memory performance of the shape memory alloy is used to connect and seal a connecting workpiece. The seal performance is good; and an internal coating can also play the roles like corrosion resistance to the shape memory alloy pipe joint, resolves the problems existed in the traditional screw connection and the like, and can be broadly applied to the connection fields of various pipelines and the pipelines with higher requirements; the utility model has the advantages of small size, light weight, convenient mounting and high reliability.
Description
Technical field
The utility model belongs to piecing devices, particularly a kind ofly is used for the marmem pipe joint that pipeline is fastenedly connected.
Background technique
Marmem is the function metal with unique shape memory performance, the memory ring that utilizes its memory performance to make at present to be used to be fastenedly connected be used for the pipe joint that pipeline is connected, be used widely at industrial fields such as gas, liquid pipeline connections.Its basic principle is: the pipe joint that processing and preparing is good hole enlargement at low temperatures makes internal diameter size become big, takes over Spielpassung with quilt.The heating pipe joint is because its memory effect, pipe joint is replied, the internal diameter contraction also produces big restoring force, the pipe joint inwall is taken over outer wall with quilt and is closely contacted and follow non-destructive deformation, be that the pipe joint inwall is had contact and produces certain pressure taking over all the time, reach the purpose that pipeline is fastenedly connected and seals.
Some pipelines connections usually have higher requirement to the sealability of pipeline in some mechanical field.Usually adopt screw threads for fastening to connect the mode that adds sealer for the connection of this class pipeline at present, but there are deficiencies such as inconvenience is installed in this Placement, and when the joint of this Placement in use for some time because the aging inefficacy that waits appears in sealer, sealing effect can sharply descend.
Summary of the invention
The purpose of this utility model provides a kind of marmem pipe joint that pipeline is fastenedly connected that is used for, and it is characterized in that: the internal surface at marmem pipe joint 1 is provided with coating 2.
Described coating 2 is monometallic individual layer coating, or the many coating of many metals, or multi-element composite coating.
The thickness of described coating 2 is 1um-2000um.
The beneficial effects of the utility model are: good seal performance, and inner coating also can play effects such as preventing corrosion to the memory alloy pipe joint, remedied the problem that modes such as conventional threads connection exist, can be widely used in various pipelines and the high pipeline connection area of seal request is arranged; Volume is little, in light weight, easy for installation, reliability is high.
Description of drawings
Fig. 1 is the utility model rip cutting sectional drawing;
Fig. 2 is the utility model crosscut sectional drawing.
Number in the figure:
The 1-marmem pipe joint; 2-coating.
Embodiment
The utility model provides a kind of marmem pipe joint that pipeline is fastenedly connected that is used for, and below by description of drawings and embodiment the utility model is described further.
Fig. 1 is the utility model rip cutting sectional drawing.Internal surface at marmem pipe joint 1 is provided with coating 2, promptly obtains marmem pipe joint described in the utility model.
Assembling work process of the present utility model is as follows:
(1) to TiNi base or 1 hole enlargement at low temperatures of Fe base marmem pipe joint;
(2) marmem pipe joint that hole enlargement is good 1 adopts methods such as chemistry or electro-deposition to plate the individual layer coating 2 of 500um at the memory alloy inwall, and its material is the material that tin or copper or silver or gold etc. have good plasticity and corrosion resistant performance.
(3) marmem pipe joint after the hole enlargement 1 and quilt are taken over Spielpassung, assembling back heating pipe joint, because the memory effect of marmem pipe joint 1 is replied, the restoring force that caliber shrinks and generation is very big, in making wall coating with contacted by the outer wall taken over and suitable deformation take place, utilize the good characteristics such as plastic deformation of coated metal to improve the tightness that internal pipe is fastenedly connected, also can protective actions such as corrosion protection be arranged simultaneously the memory alloy pipe joint.
Claims (3)
1. one kind is used for the marmem pipe joint that pipeline is fastenedly connected, and it is characterized in that: the internal surface at marmem pipe joint (1) is provided with coating (2).
2. a kind of marmem pipe joint that pipeline is fastenedly connected that is used for according to claim 1 is characterized in that: described coating (2) is monometallic individual layer coating, or the many coating of many metals, or multi-element composite coating.
3. a kind of marmem pipe joint that pipeline is fastenedly connected that is used for according to claim 1, it is characterized in that: the thickness of described coating (2) is 1um-2000um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820110319XU CN201259028Y (en) | 2008-09-01 | 2008-09-01 | Shape memory alloy pipe joint for pipeline fastening connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820110319XU CN201259028Y (en) | 2008-09-01 | 2008-09-01 | Shape memory alloy pipe joint for pipeline fastening connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201259028Y true CN201259028Y (en) | 2009-06-17 |
Family
ID=40773263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820110319XU Expired - Lifetime CN201259028Y (en) | 2008-09-01 | 2008-09-01 | Shape memory alloy pipe joint for pipeline fastening connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201259028Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632101A (en) * | 2012-04-26 | 2012-08-15 | 哈尔滨工程大学 | Nickel-titanium shape memory alloy composite pipe joint forming method |
| CN111151756A (en) * | 2020-01-20 | 2020-05-15 | 广东省新材料研究所 | 4D printing rapid manufacturing method of shape memory alloy pipe joint and product |
-
2008
- 2008-09-01 CN CNU200820110319XU patent/CN201259028Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102632101A (en) * | 2012-04-26 | 2012-08-15 | 哈尔滨工程大学 | Nickel-titanium shape memory alloy composite pipe joint forming method |
| CN102632101B (en) * | 2012-04-26 | 2014-08-20 | 哈尔滨工程大学 | Nickel-titanium shape memory alloy composite pipe joint forming method |
| CN111151756A (en) * | 2020-01-20 | 2020-05-15 | 广东省新材料研究所 | 4D printing rapid manufacturing method of shape memory alloy pipe joint and product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090617 |