CN201028235Y - Centralizer in pipe based on shape memory alloy - Google Patents
Centralizer in pipe based on shape memory alloy Download PDFInfo
- Publication number
- CN201028235Y CN201028235Y CNU2006200414563U CN200620041456U CN201028235Y CN 201028235 Y CN201028235 Y CN 201028235Y CN U2006200414563 U CNU2006200414563 U CN U2006200414563U CN 200620041456 U CN200620041456 U CN 200620041456U CN 201028235 Y CN201028235 Y CN 201028235Y
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- memory alloy
- alloy wire
- circular arc
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- shape memory
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Abstract
The utility model relates to a center fixture inside pipeline based on memory alloy and consists of a strut member and a supporting mechanism; the strut member is a plurality of outer layer circular-arc-shaped plates matched with inner wall of a pipeline; the supporting mechanism is an inner cylinder which is connected with the outer layer circular-arc-shaped plates through the memory alloy; the shape memory alloy wire is in external connection with a heating power supply; the inner cylinder is an inner layer insulated sleeve; the outer wall is uniformly distributed, fixed and connected with a plurality of pairs of inner layer conducting strip-blocks arranged axially in a circumferential direction; the inner walls of the outer layer circular-arc-shaped plates are fixedly connected with connecting strip-blocks which have the same number as the inner layer conducting strip-blocks and are arranged axially; the connecting strip-blocks are insulators; the shape memory alloy wire which is a circular arc is arranged between the outer layer circular arc plates and the inner cylinder in an axially and uniformly distributed arrangement with a multi-reticular rings mode; the middle of each shape memory alloy wire in each rank of reticular rings is fixedly connected with connecting strip-blocks; two ends of the shape memory alloy wire are respectively connected two inner layer conducting strip-blocks which are in an alternate arrangement; the shape memory alloy wire achieves external connection with the heating power supply through the inner layer conducting strip-blocks. The utility model achieves centering maintenance; with the two-phase property of the shape memory alloy material, the utility model can not only generate bigger supporting force on the inner wall of pipelines but also operate smoothly in the pipelines.
Description
Technical field
The utility model relates to centring means in a kind of pipeline, and is particularly a kind of based on centring means in the pipeline of marmem.Can be applied to pipeline surveys and relevant application.
Background technique
Centering machine is the common technology under engineering-environments such as pipeline detection, measurement in the pipeline, generally form by supporting mechanism and supporting element, the centering mode adopts supporting wheel structure (accompanying drawing 3 is its schematic representation) in traditional pipeline, the pawl type structure that its supporting wheel structure is made up of three supporting rods, roller is equipped with on three supporting rod tops, by the rotation of driven by motor screw rod slide block is moved during supporting mechanism centering support works, the push rod promotion strut that is installed on the slide block opens or shrinks, thereby makes the roller of supporting bar top contact realization centering with tube wall and support maintenance.There are the following problems for traditional supporting mechanism: be the some contact because of the way of contact, mechanism can't produce bigger centering confining force with inner-walls of duct, externally has static than feeling relieved under the big disturbance.And because a plurality of tie points that need relative movement are arranged in the mechanism, be subjected to the working principle characteristic of these tie points and the influence of making characteristic, its centering precision is restricted.This Study on Technology there is not the effective scheme of dealing with problems at present temporarily both at home and abroad.
The model utility content
The purpose of this utility model, be to overcome the problem that prior art exists, it provides a kind of can produce big support force based on centring means in the pipeline of marmem to inner-walls of duct when feeling relieved maintenance, and can be smooth and easy mobile in pipeline under external force.
For achieving the above object, design of the present utility model is:
Shape memory alloy material has two kinds of phase body states, and a kind of is martensitic state, and material presents the characteristic of low elastic modulus low yield strength under this state.Also having a kind of is exactly austenitic state, the Young's modulus of material and yield strength all are greatly improved under this state, material is under the martensitic state at normal temperatures, it will change to austenitic state mutually on the phase transition temperature when it is heated to, and its shape also can return to its former machining shape.Utilize these characteristics of SMA material just can realize the conversion of centering holding state and motion lower resistance state.
According to above-mentioned design, the utility model adopts following technical proposals:
A kind of based on centring means in the pipeline of marmem, form by supporting element and supporting mechanism, it is characterized in that described supporting element is the outer circular arc plate that polylith and inner-walls of duct are complementary, described supporting mechanism is that an inner cylinder is connected the external heating power supply of shape-memory alloy wire by shape-memory alloy wire with described outer circular arc plate; Described inner cylinder by the linkage structure that shape-memory alloy wire connects outer circular arc plate is: described inner cylinder is the primary insulation sleeve, and its outer wall is circumferentially uniform fixedly connected some to axially oriented internal layer conduction stick; The fixedly connected axially oriented stick that is connected with internal layer conduction stick equal number of the inwall of described outer circular arc plate, the connection stick is an insulator; Described shape-memory alloy wire is a circular arc, between outer circular arc plate and inner cylinder, arrange in axial uniform many nets ring mode, the middle part of each the root shape-memory alloy wire in every row net ring is with described to be connected stick fixedly connected, and fixedlys connected with the internal layer conduction stick that arrange two block gaps respectively in its two ends; The linkage structure of the external heating power supply of described memory alloy wire is: shape is recalled note alloy silk and is realized described external heating power supply by described internal layer conduction stick.
Above-mentioned based on the pipeline of marmem in centring means, the two ends of described inner cylinder are each fixedly connected baffle ring respectively; On the every outer circular arc plate two ends inwall 1～2 roller is installed, described roller rolls with the inner side surface of two baffle rings respectively and contacts.
The utility model compared with prior art, have following conspicuous substantive distinguishing features and advantage: in the utility model, adopt inner cylinder to be connected outer circular arc plate by memory alloy wire, then can heat memory alloy wire by external heating power supply, utilize two phasic properties of memory alloy material, realize that memory alloy wire applies support force to outer circular arc plate, thereby being felt relieved in pipeline, this device locatees or smooth and easy moving in pipe, it produces big support force to inner-walls of duct when feeling relieved maintenance, again can be smooth and easy mobile in pipeline under external force.The utility model is simple and reasonable for structure.
Description of drawings
Fig. 1 is an embodiment's of the utility model a structural representation.
Fig. 2 is an A-A place sectional view among Fig. 1.
Fig. 3 is traditional supporting wheel structural representation.
Embodiment
A preferred embodiment of the present utility model is: referring to Fig. 1 and Fig. 2, this is made up of supporting element and supporting mechanism based on centring means in the pipeline of marmem, supporting element is 4 blocks of outer circular arc plates 1 that are complementary with inner-walls of duct, this plate is an aluminium sheet, supporting mechanism is that an inner cylinder 2 is connected with outer circular arc plate 1 by memory alloy wire 3, shape-memory alloy wire 3 external heating power supplies; Above-mentioned inner cylinder 2 by the linkage structure that shape-memory alloy wire 3 connects outer circular arc plate 1 is: described inner cylinder 2 is the primary insulation sleeve, and its outer wall circle conducts electricity stick 5 to uniform fixedly connected six to (promptly 12) axially oriented internal layer; The inwall fixedly connected six of outer circular arc plate 1 is to (promptly 12) axial contiguous block 6, and connecting stick 6 is insulator; Shape-memory alloy wire 3 is a circular arc, between outer circular arc plate (1) and inner cylinder 2, arrange in axial uniform many nets ring mode, the middle part of each the root shape-memory alloy wire 3 in every row net ring is with to be connected stick 6 fixedly connected, and fixedly connected with the internal layer conduction stick 5 that arrange two block gaps respectively in its two ends, and the linkage structure of described memory alloy wire 3 external heating power supplies is: shape-memory alloy wire 3 is realized external heating power supply by internal layer conduction stick 5.
Referring to Fig. 2 and Fig. 1, the two ends of above-mentioned inner cylinder 2 are each fixedly connected baffle ring 7 respectively; On the every outer circular arc plate 1 two ends inwall 2 rollers 4 are installed, roller 4 rolls with the inner side surface of two baffle rings 7 respectively and contacts.
Its working principle is as follows:
Below by illustrate its centering hold mode with in pipeline the motion two states be further detailed with regard to the conversion of installing the state of how realizing.
Under the normal temperature state, this moment, shape memory alloy material was under the martensitic state, this moment, memory alloy wire 3 had the characteristic of low elastic modulus low yield strength, when diameter that the diameter of pipeline struts less than outer circular arc plate 1, inner-walls of duct can be delivered on the memory alloy wire 3 for the active force of outer circular arc plate 1, makes memory alloy wire 3 that the plastic shrinkage distortion take place under the effect of support force.The outside diameter that is formed by outer circular arc plate 1 can become less than internal diameter of the pipeline like this, and mechanism just can move in pipeline under with less resistance to motion under the promotion of external force.When device need enter the centering hold mode, because inner cylinder 2 all is the insulated nylon material with being connected stick 6, and internal layer conduction stick 5 usefulness coppers are done, thus 3 groups of memory alloy wires by as the resistance of series connection, give 3 groups of galvanizations of memory alloy wire by control circuit and can heat to it this moment.In the time of on being heated to the phase transition temperature of shape memory alloy material, it can return to machining shape, just the former arc shown in the figure and be in the state of high elastic modulus.This moment is because the outside diameter that the outer circular arc plate 1 of design forms is bigger than warp in the pipeline.So after the marmem phase transformation was finished, outer circular arc plate 1 will inevitably pressurized, this moment, memory alloy wire 3 also can be subjected to the pressure of outer circular arc plate 1 and deformation, but in regime of elastic deformation.Memory alloy wire 3 can produce bigger elastic anchorage force to outer circular arc plate 1 under these circumstances, allows outer circular arc plate and inner-walls of duct be close to.Because memory alloy wire 3 upwards is equally distributed in week, stressed also is that so guaranteed the centre symmetry of apparatus structure, when not considering the weight of inner cylinder 2, the characteristic of this device can guarantee that inner cylinder 2 is in the pipeline center position uniformly.Outer circular arc aluminium sheet can't move and guarantee the rigidity of total under the effect of the shelves ring 7 on both sides, has also guaranteed centering precision simultaneously.The diameter of ring washer is less than the certain amount of the internal diameter of pipeline, can not produce movement interference when can assurance device moving in pipeline.
Claims (3)
1. one kind based on centring means in the pipeline of memory alloy, form by supporting element and supporting mechanism, it is characterized in that described supporting element is the outer circular arc plate (1) that polylith and inner-walls of duct are complementary, described supporting mechanism is that an inner cylinder (2) is connected with described outer circular arc plate (1) by shape-memory alloy wire (3), the external heating power supply of shape-memory alloy wire (3).
2. according to claim 1 based on centring means in the pipeline of marmem, it is characterized in that described inner cylinder (2) is the primary insulation sleeve, its outer wall is circumferentially uniform fixedly connected some to axial internal layer conducting block (5); The fixedly connected axial contiguous block (6) with internal layer conducting block (5) equal number of the inwall of described outer circular arc plate (1), contiguous block (6) is an insulator; Described shape-memory alloy wire (3) is a circular arc, fixedly connected with described contiguous block (6) in its middle part, and fixedly connected with the internal layer conducting block (5) that arrange two block gaps respectively in its two ends, and shape is recalled note alloy silk (3) and realized described external heating power supply by described internal layer conducting block (5).
3. according to claim 2 based on centring means in the pipeline of marmem, it is characterized in that each fixedly connected baffle ring (7) is distinguished at the two ends of described inner cylinder (2); On the inwall of every block of outer circular arc plate (1) two ends 1～2 roller (4) is installed, described liquid wheel (4) rolls with the inner side surface of two baffle rings (7) respectively and contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200414563U CN201028235Y (en) | 2006-04-28 | 2006-04-28 | Centralizer in pipe based on shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200414563U CN201028235Y (en) | 2006-04-28 | 2006-04-28 | Centralizer in pipe based on shape memory alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028235Y true CN201028235Y (en) | 2008-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200414563U Expired - Fee Related CN201028235Y (en) | 2006-04-28 | 2006-04-28 | Centralizer in pipe based on shape memory alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028235Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922591A (en) * | 2010-08-24 | 2010-12-22 | 哈尔滨工业大学 | Shape memory polymer pipeline and use of shape memory polymer pipeline as aircraft engine intake |
| CN109340068A (en) * | 2018-09-07 | 2019-02-15 | 大连理工大学 | A kind of integral type large deformation marmen and application |
| CN110813954A (en) * | 2019-10-29 | 2020-02-21 | 马鞍山圣德力智能科技有限公司 | Pipeline blockage clearing device based on shape memory alloy |
| CN112034630A (en) * | 2019-09-11 | 2020-12-04 | 常州市瑞泰光电有限公司 | Optical anti-shake component |
| CN113007491A (en) * | 2021-03-11 | 2021-06-22 | 中国石油大学(北京) | Pipeline diameter measuring and pipe cleaning device |
| CN113406148A (en) * | 2021-05-24 | 2021-09-17 | 上海交通大学 | Device based on shape memory alloy |
-
2006
- 2006-04-28 CN CNU2006200414563U patent/CN201028235Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922591A (en) * | 2010-08-24 | 2010-12-22 | 哈尔滨工业大学 | Shape memory polymer pipeline and use of shape memory polymer pipeline as aircraft engine intake |
| CN109340068A (en) * | 2018-09-07 | 2019-02-15 | 大连理工大学 | A kind of integral type large deformation marmen and application |
| CN112034630A (en) * | 2019-09-11 | 2020-12-04 | 常州市瑞泰光电有限公司 | Optical anti-shake component |
| CN110813954A (en) * | 2019-10-29 | 2020-02-21 | 马鞍山圣德力智能科技有限公司 | Pipeline blockage clearing device based on shape memory alloy |
| CN113007491A (en) * | 2021-03-11 | 2021-06-22 | 中国石油大学(北京) | Pipeline diameter measuring and pipe cleaning device |
| CN113406148A (en) * | 2021-05-24 | 2021-09-17 | 上海交通大学 | Device based on shape memory alloy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 |