CN104197188B - Gas jetting device driven by shape memory alloy wires - Google Patents
Gas jetting device driven by shape memory alloy wires Download PDFInfo
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- CN104197188B CN104197188B CN201410420427.7A CN201410420427A CN104197188B CN 104197188 B CN104197188 B CN 104197188B CN 201410420427 A CN201410420427 A CN 201410420427A CN 104197188 B CN104197188 B CN 104197188B
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- memory alloy
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Abstract
The invention provides a gas jetting device driven by shape memory alloy wires. The gas jetting device comprises a high-pressure gas bottle, a top holder, a bottom holder and multiple shape memory alloy wires, wherein the high-pressure gas bottle is arranged on the bottom holder; the top holder is arranged at the upper end of the high-pressure gas bottle; an ejection pin in contact with the upper end surface of the high-pressure gas bottle is arranged on the top holder; a limiting structure surrounding the ejection pin is arranged on the top holder and sleeves the upper end of the high-pressure gas bottle for limiting radial motion of the top holder; the upper ends of the shape memory alloy wires are connected with the top holder and the lower ends of the shape memory alloy wires are connected with the base holder; the shape memory alloy wires are parallel to each other and are perpendicular to both the top holder and the bottom holder; the shape memory alloy wires are in serial connection, parallel connection or serial-parallel mixed connection, so as to form an electrified circuit; and when being subjected to electrification and heating, the shape memory alloy wires shrink to drive the ejection pin to prick the high-pressure gas bottom to realize gas jetting. The gas jetting device driven by the shape memory alloy wires has the advantages of high reliability, simple design, installing convenience and good economical efficiency, is passive and free of leakage, can be used as a gas source for multiple kinds of products such as spaceflight inflation products, life jackets, extinguishers and the like and is relative wide in application scope.
Description
Technical field
The present invention relates to jet, inflation mechanism design field, more particularly, to a kind of shape-memory alloy wire driving spray
Device of air.
Background technology
Jet, aerating device are frequently used in the fields such as space flight, apply to the devices such as parachute and slow down as inflated type
Device etc. is it is also possible to apply to the recovery of Earth's orbit resource, the return of space station goods and materials, escape of city high-rise building etc..
Existing aerating device generally adopts gas cylinder aerating valve gear, and this inflation mechanism has obvious drawback, not foot point
Be that air-valve device has certain slip, if device is chronically at non-deflation status, in gas cylinder gas can with when
Between change gradually tail off, under-inflation can be led to when needing to inflate as source of the gas even to inflate the situation of failure.
Content of the invention
In order to solve the above problems, the invention provides a kind of shape-memory alloy wire drives air jet system, including high pressure
Gas cylinder, footstock, base and some shape-memory alloy wires, gassy and integral sealing in described gas cylinder；Wherein,
Described footstock is located at the top of described gas cylinder, and the center of described footstock is provided with one and described high pressure
The thimble contacting of gas cylinder；
The lower end of told gas cylinder is arranged on described base, and the upper and lower end of described some shape-memory alloy wires divides
It is not connected on described footstock and described base；Described shape-memory alloy wire heat shrinkable, drives described thimble to poke described
Gas cylinder realizes jet.
It is preferred that described some shape-memory alloy wires are uniform along a circle circumference of described footstock and described base.
It is preferred that the upper and lower end of described shape-memory alloy wire is connected respectively to described footstock and described bottom by screw
The screw thread in the hole opening up on seat.
It is preferred that the screw thread in the hole opening up on described footstock and described base is provided with steel-wire screw-socket.
It is preferred that between described some shape-memory alloy wires, serial or parallel connection or series-parallel connection form a power-on circuit, and should
Power-on circuit connects a power supply.
It is preferred that being provided with some gathering sills, described gathering sill and described shape on outside one circle of described gas cylinder
The position of memory alloy wire corresponds, and described shape-memory alloy wire passes through described gathering sill.
It is preferred that being additionally provided with position limiting structure on described footstock, described position limiting structure is arranged around a circle of described thimble, and
Described thimble overcoat is set in the upper end of described gas cylinder.
It is preferred that being additionally provided with a gas cylinder overcoat on described base, the lower end of described gas cylinder is located at described height
In air bottle overcoat.
The present invention is due to using above technical scheme, being allowed to compared with prior art, have the following advantages that and actively imitate
Really:
A kind of shape-memory alloy wire that the present invention provides drives air jet system, is produced with temperature by shape-memory alloy wire
Raw metal phase changes as driving source, to poke gas cylinder, thus realizing jet effect；High pressure is wherein utilized to close gas cylinder
Replace normally opened pressure vessel in prior art, instead of valve spray of the prior art using shape-memory alloy wire and thimble
Gas, thus the problem of leakage is it is ensured that the inflation source of abundance after efficiently avoid air entraining valve pressure vessel long storage time；And
Reliability of the present invention is high, passive, No leakage, design simple, easy for installation, good economy performance the advantages of, can be space flight inflation product
The multiple products such as product, life jacket, fire extinguisher serve as source of the gas, and operation strategies are wider.
Brief description
In conjunction with accompanying drawing, by hereafter state detailed description, can be more clearly understood that the present invention above-mentioned and other feature and
Advantage, wherein:
Fig. 1 drives the half sectional view of air jet system for shape-memory alloy wire；
Fig. 2 drives the three dimensional structure diagram of air jet system for shape-memory alloy wire.
Symbol description:
1- footstock
2- thimble
3- position limiting structure
4- gas cylinder
5- gas cylinder overcoat
6- base
7- screw
8- shape-memory alloy wire
9- gathering sill.
Specific embodiment
Referring to the accompanying drawing illustrating the embodiment of the present invention, the present invention is described in more detail.However, the present invention can be with
Many multi-forms are realized, and the embodiment that should not be construed as by herein proposing is limited.On the contrary, proposing these embodiments is
In order to reach abundant and complete disclosure, and those skilled in the art are made to understand the scope of the present invention completely.These are attached
In figure, for clarity, may be exaggerated size and the relative size in layer and region.
With reference to Fig. 1-2, the invention provides a kind of shape-memory alloy wire drives air jet system, produce for inflating for space flight
Product, life jacket, the multiple product such as fire extinguisher serves as source of the gas, solves the air entraining valve pressure vessel adopting in prior art, for a long time
Deposit the problem of easy gas leakage.
Specifically, if this shape-memory alloy wire drives air jet system to include gas cylinder 4, footstock 1, base 5 and form
Shape memory alloys silk 8.Gassy in gas cylinder 4, and gas cylinder 4 is in fully sealed position, with respect to existing jet dress
For putting the pressure vessel with valve of employing, the gas cylinder 4 in the present invention is not in gas leakage after long-time placement
Phenomenon；The lower end outside of gas cylinder 4 is provided with a gas cylinder overcoat 5, and gas cylinder 4 passes through to be set on base 6 outside gas cylinder,
Gas cylinder overcoat 5 is used for fixing gas cylinder 4 further.
One thimble 2 and position limiting structure 3 are provided with the center of footstock 1, the upper end of thimble 2 is vertical with footstock 1 to be fixed
Connect, the upper surface of the lower end of thimble 2 vertically gas cylinder 4, and before this air jet system does not work, thimble 2 and high pressure
The top of gas cylinder 4 contacts no active force.Position limiting structure 3 is arranged on footstock 1, and position limiting structure 3 encloses setting around thimble 4 one,
The internal diameter of position limiting structure 3 is matched with gas cylinder 4 upper end external diameter, and position limiting structure 3 is enclosed within gas cylinder 4 upper end lateral wall,
The setting purpose of position limiting structure 3 moves radially primarily to limiting footstock 1；Wherein position limiting structure 3 can integrally be become with footstock 1
Type, also can be separately fabricated, is not restricted herein.
Some screwed holes are evenly equipped with footstock 1 circumference one circle, base 6 circumference one circle is also evenly equipped with the screw thread of equal number
Hole, the screw thread in the hole on footstock 1 and base 6 is additionally provided with steel-wire screw-socket, for the intensity in strengthened thread hole；Some shape memories
The upper and lower end of B alloy wire 8 is connected by screw the screw thread in the hole on footstock 1 and base 6, some shape-memory alloy wires respectively
It is parallel to each other and is each perpendicular to footstock 1 and base 6 between 8；Some shape-memory alloy wires 8 are around a circle circumference of gas cylinder 4
Uniformly, some shape-memory alloy wires 8 are heated and can shrink, thus shape-memory alloy wire 8 drives thimble 3 to poke by footstock 1
The top of gas cylinder 4, realizes jet.In the present embodiment, shape-memory alloy wire 8 is around gas cylinder one circle setting one side
It is for footstock 1 stress balance, on the other hand ensure that the power that shape-memory alloy wire 8 contraction produces enables to thimble 2 and pokes
Gas cylinder 4, the setting number of certain shape-memory alloy wire 8, set location all can be according to specifically need to being adjusted, and shape is remembered
Recall B alloy wire 8 not also all to be restricted around setting in a week of full gas cylinder 4 herein.
In the present embodiment, it is sequentially connected in series by wire between some shape-memory alloy wires 8 and be connected power supply formation one
Power-on circuit, physical circuit connected mode is: is illustrated with the quantity of shape-memory alloy wire 8 for 16, if first to form
The two ends of shape memory alloys silk 8 are numbered, as shown in Figure 2, number consecutively in the counterclockwise direction, each shape-memory alloy wire
8 upper end is numbered with (1), (2) ..., numbering that the lower end of each shape-memory alloy wire 8 is with (1 ') (2 ') ...；Twined with copper conductor
Around the mode of screw, (1) and (2), (3) and (4), (5) and (6) to shape-memory alloy wire 8 upper end ... carries out electricity respectively
Connect, (2 ') and (3 '), (4 ') and (5 '), (6 ') and (7 ') to shape-memory alloy wire 8 lower end ... are electrically connected respectively
Connect, so that all shape-memory alloy wires 8 are to be connected into a whole piece path, using (1 ') (16 ') as the two ends connecting power supply；
When there being inflation requirements, by (1 ') (16 ') as circuit two ends series connection access power supply, shape-memory alloy wire 8 electric after produce
Heat, when reaching shape-memory alloy wire 8 phase transition temperature, shape-memory alloy wire 8 produces contractility because metal phase changes, thus
Drive top thimble 2 to protrude into gas cylinder 4 and discharge the gas in gas cylinder.The present invention is mainly by closing to shape memory
Spun gold 8 carries out energising to realize heat shrink, mainly to design in view of easy to use, certain shape-memory alloy wire 8
Also can realize by other means heating, mode of heating can be selected as the case may be, not be restricted herein.
In addition, the connected mode between some shape-memory alloy wires 8 is also not limited to the mode connected, some shape notes
Recall and can form a series circuit by connecting between B alloy wire 8, also can connect formation one parallel circuit or series and parallel circuit, herein
All it is not restricted, only need to ensure to connect between some shape-memory alloy wires 8 and form the circuit that one correct, electric current can circulate
?.
In the present embodiment, lateral wall one circle of gas cylinder 4 is additionally provided with some gathering sills 9, if some gathering sills 9 with
Dry shape-memory alloy wire 8 corresponds, and shape-memory alloy wire 8 passes through gathering sill 9 so that shape-memory alloy wire 8 exists
Move along gathering sill 9 when heat shrinkable.
A kind of shape-memory alloy wire that the present invention provides drives air jet system, and some shape-memory alloy wires 8 load machine
Need before structure to be pre-stretched, then with wire, uniform shape-memory alloy wire 8 is connected；Thimble 2 contact gas cylinder 4 when initial
Upper surface and powerless effect, when when to be inflated, some shape-memory alloy wires 8 connect power supplys and obtain electric, and are heated
Axial shrinkage, thus drive thimble 2 to poke gas cylinder 4 again.The gold that the present invention is produced with temperature by shape-memory alloy wire
Symbolic animal of the birth year changes as driving source, to poke gas cylinder, to realize jet effect；High pressure closing gas cylinder is wherein utilized to replace existing
Normally opened pressure vessel in technology, instead of valve jet of the prior art using shape-memory alloy wire and thimble, thus having
Effect ground avoids the problem leaking after normally opened pressure vessel long storage time it is ensured that the inflation source of abundance；Reliability of the present invention
High, passive, No leakage, design are simple, easy for installation, good economy performance the advantages of, in addition to can inflating for space flight aerated product,
Also cocoa is life jacket, and multiple product for civilian use such as fire extinguisher serves as source of the gas.
In sum, the invention provides a kind of shape-memory alloy wire drives air jet system, including gas cylinder, top
Seat, base and some shape-memory alloy wires, gas cylinder gassy and integral sealing；Gas cylinder is arranged on base,
The upper end of gas cylinder is provided with a footstock, the center of footstock is provided with one and contacts with the upper surface of gas cylinder
Thimble, footstock is additionally provided with one around thimble position limiting structure, position limiting structure be enclosed within gas cylinder upper end be used for limit top
Seat move radially；Some shape-memory alloy wire upper ends connect footstock, lower end connect base, are parallel to each other and perpendicular to footstock
And base；Between some shape-memory alloy wires, serial or parallel connection or series-parallel connection form a power-on circuit, and shape-memory alloy wire leads to
Electric heat shrinkable, drives thimble to poke gas cylinder and realizes jet.The present invention has that reliability is high, passive, No leakage, design letter
The advantages of single, easy for installation, good economy performance, gas can be served as the multiple product such as space flight aerated product, life jacket, fire extinguisher
Source, operation strategies are wider.
Those skilled in the art should be understood that the present invention can be implemented without departing from this with other concrete forms many
The spirit or scope of invention.Although having been described for embodiments of the invention it should be understood that the present invention should not be limited to these embodiments,
Those skilled in the art as made change within spirit and scope of the invention that appended claims define and can repair
Change.
Claims (7)
1. a kind of shape-memory alloy wire drives air jet system it is characterised in that including gas cylinder, footstock, base and some
Shape-memory alloy wire, gassy and integral sealing in described gas cylinder；Wherein,
Described footstock is located at the top of described gas cylinder, and the center of described footstock is provided with one and described gas cylinder
The thimble contacting；
The lower end of described gas cylinder is arranged on described base, and the upper and lower end of described some shape-memory alloy wires connects respectively
It is connected on described footstock and described base, described some shape-memory alloy wires are along a circle circumference of described footstock and described base
Uniformly；Described shape-memory alloy wire heat shrinkable, drives described thimble to poke described gas cylinder and realizes jet.
2. drive air jet system it is characterised in that described marmem according to the shape-memory alloy wire described in claim 1
The upper and lower end of silk is connected respectively to, by screw, the screw thread in the hole open up on described footstock and described base.
3. drive air jet system it is characterised in that described footstock and described bottom according to the shape-memory alloy wire described in claim 2
The screw thread in the hole opening up on seat is provided with steel-wire screw-socket.
4. drive air jet system it is characterised in that described some shape memories according to the shape-memory alloy wire described in claim 1
Between B alloy wire, serial or parallel connection or series-parallel connection form a power-on circuit, and this power-on circuit connects a power supply.
5. drive air jet system according to the shape-memory alloy wire described in claim 1 it is characterised in that described gas cylinder outer
Some gathering sills are provided with the circle of side one, described gathering sill is corresponded with the position of described shape-memory alloy wire, and described
Shape-memory alloy wire passes through described gathering sill.
6. drive air jet system it is characterised in that also setting up on described footstock according to the shape-memory alloy wire described in claim 1
Limited bit architecture, described position limiting structure is around a circle setting of described thimble, and described thimble overcoat is set in described gas cylinder
Upper end.
7. drive air jet system it is characterised in that also setting up on described base according to the shape-memory alloy wire described in claim 1
There is a gas cylinder overcoat, the lower end of described gas cylinder is located in described gas cylinder overcoat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420427.7A CN104197188B (en) | 2014-08-25 | 2014-08-25 | Gas jetting device driven by shape memory alloy wires |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410420427.7A CN104197188B (en) | 2014-08-25 | 2014-08-25 | Gas jetting device driven by shape memory alloy wires |
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| CN104197188A CN104197188A (en) | 2014-12-10 |
| CN104197188B true CN104197188B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410420427.7A Active CN104197188B (en) | 2014-08-25 | 2014-08-25 | Gas jetting device driven by shape memory alloy wires |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106141987B (en) * | 2016-07-28 | 2018-01-05 | 航天东方红卫星有限公司 | A kind of pin removal based on memory alloy wire |
| CN107433579B (en) * | 2017-06-27 | 2021-04-20 | 西北工业大学 | SMA driven multi-section bionic tail device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035439U (en) * | 1988-05-19 | 1989-04-05 | 胡捷 | Automatic safety device for gas pot |
| CN1102351A (en) * | 1993-06-22 | 1995-05-10 | 光荣机器株式会社 | Automatic injector for gas fire extinguisher and retainer eoperating device thereof |
| CN102341630A (en) * | 2009-03-03 | 2012-02-01 | 陆型技术公司 | Shape memory alloy trigger for pressure relief valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS624973A (en) * | 1985-06-28 | 1987-01-10 | Asahi Seisakusho:Kk | Temperature responsive safety valve of seal breaking type |
| SE500878C2 (en) * | 1992-12-15 | 1994-09-26 | Asea Atom Ab | Memory metal compression joint to reinforce a tubular component |
| JPH0838638A (en) * | 1994-07-29 | 1996-02-13 | Glory Kiki Kk | Automatic fire extinguishing injector |
| JP2007298131A (en) * | 2006-05-01 | 2007-11-15 | Nissan Motor Co Ltd | Hydrogen storing container |
-
2014
- 2014-08-25 CN CN201410420427.7A patent/CN104197188B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2035439U (en) * | 1988-05-19 | 1989-04-05 | 胡捷 | Automatic safety device for gas pot |
| CN1102351A (en) * | 1993-06-22 | 1995-05-10 | 光荣机器株式会社 | Automatic injector for gas fire extinguisher and retainer eoperating device thereof |
| CN102341630A (en) * | 2009-03-03 | 2012-02-01 | 陆型技术公司 | Shape memory alloy trigger for pressure relief valve |
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| CN104197188A (en) | 2014-12-10 |
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