CN107489831A - A kind of memorial alloy pipe joint - Google Patents
A kind of memorial alloy pipe joint Download PDFInfo
- Publication number
- CN107489831A CN107489831A CN201710486843.0A CN201710486843A CN107489831A CN 107489831 A CN107489831 A CN 107489831A CN 201710486843 A CN201710486843 A CN 201710486843A CN 107489831 A CN107489831 A CN 107489831A
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- Prior art keywords
- conduit
- pipe joint
- plane
- trapezoidal
- memorial alloy
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
Abstract
The invention discloses a kind of memorial alloy pipe joint, for realizing that fastener-free conduit is tightly connected, including using the integrally formed body of Ni Ti Nb materials, the body is in hollow cylindrical, the integrally formed receptacle of two ends, the receptacle has the tapered receiving compartment for facilitating conduit to insert, and the receiving compartment connects in outer imperial palace is small with the hollow cavity of body；The body interior is evenly distributed with least four latches for being used for A/C with this body by integral forming vertically.Present invention eliminates fastener of the prior art, reduce the number of parts of pipe joint, relative to existing enlarging conduit jointing, in the case of same size, weight saving 80%.
Description
Technical field
The present invention relates to oil gas pipe joint field, more particularly to it is a kind of without additional fastener by two airtight companies of conduit
The pipe joint being connected together, it is that a kind of memorial alloy conduit connects specifically.
Background technology
Pipeline connection is connected mode and attachment structure very common in current mechanical dynamic system, is generally used for hydraulic pressure
System, pneumatic system are used for delivery hydraulic pressure oil and gases at high pressure, and this is very common in mechanical drive system field.In aircraft liquid
The conduit connection of pressure, cold gas system is that pipeline connection and extrusion pressing type non-enlarging formula pipeline connecting mode are realized using enlarging.Expand
Mouthful formula pipeline connection component includes the pipe joint connected between flared type conduit component and conduit, and flared type conduit component is taken pair
Catheter end head expands horn mouth, be bonded with 74 ° of male cone (strobilus masculinus)s of pipe joint, additional flat ozzle and cap nut fastening and bolt fuse
Form.It is easily cracked therefore right in flared type pipeline connecting mode processing technology complexity, horn section manufacture and use
The intensity of tube material, plasticity and surface quality requirements are very high.The screw-down torque of butt joint has strict demand, torque mistake in use
Conference makes horn mouth crimp, causes crackle or fracture.Screw-down torque is small, influences air-tightness.Aircraft space is narrow and small, therefore leads
This type of attachment of pipe brings very burden to manufacture, assembling.Because seepage, conduit crackle and fracture increase in line
A large amount of maintenance workloads are added.
Extrusion pressing type non-enlarging conduit connection component includes the pipe joint connected between flareless conduit component and conduit, no expansion
Mouth conduit tube component is taken is embedded in pipe sleeve inside groove in guide hole, makes pipe sleeve outer mold surface and 24 ° of inner conical surfaces of pipe joint with cap nut
Mode is tightly connected with the high resiliency that 24 ° of inner conical surfaces of pipe joint are brought into close contact.This connected mode is with enlarging connected mode without this
Change in matter, what is relied on is the high resiliency of canister material.Make even with 1Cr12Mn5Ni4Mo3Al high-performance stainless steels
Canister material, can not the connected mode completely it is reliable and stable.
At present, most commonly flared type connection, as shown in fig. 7, comprises needing the connected He of the first enlarging conduit 400
Second enlarging conduit 500, for connecting the pipe joint 100 of the first enlarging conduit 400 and the second enlarging conduit 500, and
For the flat ozzle 300 and cap nut 200 of connection fastening corresponding with the first enlarging conduit 400 and the second enlarging conduit 500, this
The problem of the drawbacks of kind connected mode is main is that weight is big, installation difficulty is big, and stability is not high；In long term maintenance process
In, repeatedly dismantling pipe joint can cause to damage to the horn mouth of conduit, cause leakage.
The content of the invention
It is an object of the invention to provide a kind of memorial alloy conduit to connect, for replacing existing enlarging or not enlarging
Conduit connected mode, avoid conduit weight present in prior art big, increase aircraft weight the problem of, simultaneously, moreover it is possible to solve
Tubes fit part is more, complicated, and manufacturing cost is high, and installation procedure is more, and during repeated disassembled and assembled, due to screwing force
Uncontrollable the problem of causing the easy cracking of conduit horn mouth to cause leakage of square.
In order to solve the above-mentioned technical problem, loss of weight is reached, leakproof, the technique effect of installation easy to maintain, the present invention passes through
Following technical proposals are realized：
A kind of memorial alloy pipe joint, for realizing that fastener-free conduit is tightly connected, including using Ni-Ti-Nb materials one
Body formed body, the body are in hollow cylindrical, and the integrally formed receptacle of two ends, the receptacle, which has, conveniently to be led
The tapered receiving compartment of pipe insertion, the receiving compartment connect in outer imperial palace is small with the hollow cavity of body；The body interior
At least four latches for being used for A/C with this body by integral forming are evenly distributed with vertically.
Because Ni-Ti-Nb materials possess memory characteristic, and latch is that the most key part is fastened to conduit, although will
Latch makes of other memorial alloys or metal material, can equally realize fastening effect, but because it is in different temperatures
Shrink inconsistent, influence whether the effect of fit sealing, while internal stress effect is easily produced between latch and body, for a long time
Using the fatigue phenomenon for easily causing latch, or even the problem of crack fracture, and it is formed in processing using different materials and fixes
It is more complicated for overall digital control processing during connection.
To the operation principle of the technical program and before installing and using step explanation, memorial alloy is done first following general
State：
Marmem（Shape Memory Alloys,）, abbreviation SMA, it is that it can be completely eliminated after heat temperature raising in one kind
The deformation occurred at a lower temperature, recover the alloy material of original-shape before its deformation, that is, possess the conjunction of " memory " effect
Gold.Application in aerospace field has many successful examples.Huge antenna can use memorial alloy on artificial satellite
Make.Before launching a man-made satellite., parabola antenna is folded up and put into satelloid, rocket launching sends artificial satellite to
After planned orbit, only need to heat, the satellite antenna of folding recovers parabolic shape because with " memory " function naturally deploying.
Memorial alloy be a kind of atomic arrangement is very regular, volume become smaller than 0.5% martensitic traoformation alloy.It is this
Alloy can be deformed under external force, be removed when external force, in a certain temperature conditions, can be returned to the original form.
Because it has the recovery function of more than million times, therefore it is called " memorial alloy ".Certainly it can not possibly be as human brain thinking
Memory, more precisely it should be referred to as " alloy of shape memory ".In addition, memorial alloy also have nonmagnetic, wear-and corrosion-resistant,
Avirulent advantage, therefore application is quite varied, such as makes temperature controlling device temperature control circuit, Aircraft Air oiling interface.Section
Scholars have now been discovered the alloy of tens kinds of different memory functions, such as titanium-nickel alloy, gold-cadmium alloy, copper-zinc
Alloy etc..
What deserves to be explained is：Scheme of the present invention is the peculiar property using memorial alloy, but the peculiar property is not
Claimed point, but the pipe joint manufactured and designed using memorial alloy peculiar property in itself be different from it is existing
The unique texture of technology.
Operation principle and installation method：
First, when processing pipe joint of memory alloy, internal diameter of pipe joint is slightly smaller than catheter outer diameter, realizes between pipe joint and conduit
Interference fit, eliminate fit clearance, reach closed effect.It is expanding in -59 °C~-62 °C progress of low temperature, make in pipe joint
Footpath is slightly larger than catheter outer diameter.Expanding purpose is for convenience to be installed together conduit and pipe joint, is easy to conduit light
Be inserted in pipe joint, assembled at normal temperatures, connecting conduit and pipe joint.The conduit tube component assembled is warmed to
120 °C, internal diameter of pipe joint returns to slightly smaller than catheter outer diameter, pipe joint crimping is lived conduit, is then cooled to normal temperature, realizes pipe
Interference fit between joint and conduit and it is tightly connected.What deserves to be explained is the surface roughness due to connected conduit
It is larger, although pipe joint is interference fit with conduit after heat shrink, because contact area is big, can not still guarantee
Enough absolute to be tightly connected, so being provided with four latches, because the cross-sectional area of latch is small, pressure is big, and internal diameter compares conduit
External diameter is small, can produce huge circumference radial load and conduit is pressed into local contraction deformation, realize air-tight fit.Secondly, by card
Tooth, which is evenly distributed, is arranged to four, and the conduit of any one end at least there are two latches to coordinate, and further improve conduit
Radial seal and axial tensile-strength, avoid conduit when by axial tension, separation pulled because fastening force is too low.
In order to further realize the present invention, strengthen the fastening effect of pipe joint, the section of preferably described latch
For trapezoidal and trapezoidal bottom and body integrally connected.
In order to further realize the present invention, it is preferable that the trapezoidal latch includes the as trapezoidal two waist
One inclined-plane and the second inclined-plane, and the top surface as trapezoidal top margin；First inclined-plane it is equal with the width on the second inclined-plane and with
- 75 ° of angle a=60 ° of top surface.What deserves to be explained is because existing conduit generally use aluminum alloy material makes, mainly
Using the advantages of intensity of aluminum alloy is high, corrosion-resistant, light weight and plasticity are good, however, it can be seen from formula F=PS pressure formula,
When lifting surface area S is smaller, under the effect of identical directed force F, pressure P is bigger；Pressed part amount of plastic deformation is bigger.Will folder
The purpose that angle a is arranged to 60 ° -75 ° is to obtain the thrust of maximum in the range of ensureing that conduit is normally plastically deformed.By
In setting a angle smaller, the section of described latch seems about gentle, and the compression and closed effect for conduit are got over
It is weak；A angle is set bigger, such as 90 °, then the rectangular in cross-section of latch, the compression and closed effect to conduit are most strong,
But because the space between latch and inner body wall does not have inclined-plane as buffering area, conduit compressive deformation can be caused excessive and ftractureed
The problem of, therefore, according to existing aluminum alloy conduit, a angle is arranged to 60 ° of -75 ° of obturation effects and fastening to conduit
Sealing effectiveness is highly stable.
In order to preferably realize the present invention, further prevent conduit crackle from producing, the width of the top surface and the first inclined-plane
The ratio of width is 1:3-1:4, top surface is connected with the first inclined-plane and the second inclined-plane by circular arc r smooth excessivenesses, the circular arc r
=0.1 times of top surface width.It is with the purpose that the first inclined-plane and the second inclined-plane are connected by circular arc r smooth excessivenesses by the top surface
In order to prevent in compaction process, cause stress concentration because crest line caused by two inclined-planes intersection is too narrow and small, cause to lead
The problem of tracheal rupture, produces.It is according to pipe joint and latch size by the purpose that circular arc r values are 0.1 times of top surface width
Increase the circular arc equal proportion increase, avoid, when connecting large-size conduit, asking for stress concentration occur because circular arc r is too small
Topic.
In order to preferably realize the present invention, the structure of realizing of another latch is also provided, i.e., the section of described latch is by ladder
Shape section and arc section composition, base and the body integrally connected of the trapezoidal sections, the top margin of the trapezoidal sections and the arc section
Integrally connected, two waists of the trapezoidal sections are the 3rd inclined-plane and the 4th inclined-plane that are connected with the arc section smooth excessiveness respectively.
The face of the latch and catheter contact is arranged to cambered surface, can preferably be bonded conduit, and avoids stress concentration from causing to lead
The problem of tracheal rupture, produces.
In order to preferably realize the present invention, the taper surface of the inwall formation of the receiving compartment and the axially place of the body
Angle β=5 ° of straight line.It is to be more easily installed in order to facilitate conduit in the joint by the angle β purposes for being arranged to 5 °, due to
Comparatively the installing space of aircraft pipe joint compares limitation, opening character is excessively poor, is unfavorable for the progress of installation, therefore,
Receiving compartment is arranged into angle of inclination can more easily realize installation；Further, after memorial alloy contraction, receiving compartment energy
It is enough be bonded completely with conduit outer wall, when the setting of slanted angle β angles is excessive, easy being sequentially generated close to body in receiving compartment
Space, it is unfavorable for evenly distributing for stress.
The present invention compared with prior art, has advantages below and beneficial effect：
（1）Present invention eliminates fastener of the prior art, reduce the number of parts of pipe joint, relative to existing expansion
Mouthful conduit jointing, in the case of same size, weight saving 80%.
（2）The present invention is fastened using latch, and restorable characteristic is carried out to conduit at high temperature using memorial alloy
Fastening clamp, uniform force, air-tightness is good, avoids in the prior art because the uncontrollable of screw-down torque causes conduit closed
Property low or conduit asking due to the excessive cracking leakage of screw-down torque.
Brief description of the drawings
Fig. 1 is the axial sectional view of joint of the present invention；
Fig. 2 is the connection axial direction structure sectional view of joint of the present invention and conduit；
Fig. 3 is the first embodiment of A plot structure enlarged drawings in Fig. 1；
Fig. 4 is second of embodiment of A plot structure enlarged drawings in Fig. 1；
Fig. 5 is the external structure schematic diagram of joint of the present invention；
Fig. 6 is the connection diagram of joint of the present invention and conduit；
Fig. 7 is prior art construction schematic diagram described in background technology；
Wherein 1- bodies；11- latches；The inclined-planes of 111- first；112- top surfaces；The inclined-planes of 113- second；The inclined-planes of 114- the 3rd；115-
Four inclined-planes；116- segmental arcs；12- receiving compartments；13- taper surfaces；2- receptacles；The conduits of 3- first；The conduits of 4- second；5- is docked
Seam；100- pipe joints；200- cap nuts；300- flat ozzles；400- the first enlarging conduits；5- the second enlarging conduits.
Embodiment
The present invention is described in further detail with reference to the preferred embodiments of the present invention, but the embodiment party of the present invention
Formula not limited to this.
Before being illustrated to embodiments of the invention, the memorial alloy being related in the present invention is explained first.
Marmem Shape Memory Alloys, abbreviation SMA, it is that one kind can be completely eliminated after heat temperature raising
Its deformation occurred at a lower temperature, recover the alloy material of original-shape before its deformation, that is, possess that " memory be " effect
Alloy.Application in aerospace field has many successful examples.Huge antenna can use memory to close on artificial satellite
Gold makes.Before launching a man-made satellite., parabola antenna is folded up and put into satelloid, rocket launching send artificial satellite
To after planned orbit, only need to heat, the satellite antenna of folding recovers paraboloidal because with " memory " function naturally deploying
Shape.
Memorial alloy be a kind of atomic arrangement is very regular, volume become smaller than 0.5% martensitic traoformation alloy.It is this
Alloy can be deformed under external force, be removed when external force, in a certain temperature conditions, can be returned to the original form.
Because it has the recovery function of more than million times, therefore it is called " memorial alloy ".Certainly it can not possibly be as human brain thinking
Memory, more precisely it should be referred to as " alloy of shape memory ".In addition, memorial alloy also have nonmagnetic, wear-and corrosion-resistant,
Avirulent advantage, therefore application is quite varied, such as makes temperature controlling device temperature control circuit, Aircraft Air oiling interface.Section
Scholars have now been discovered the alloy of tens kinds of different memory functions, such as titanium-nickel alloy, gold-cadmium alloy, copper-zinc
Alloy etc..
Embodiment 1：
With reference to shown in accompanying drawing 1-2,5-6, it would be desirable to two conduits of connection, the first conduit 3 and the second conduit 4 are respectively defined as,
Connected using the memorial alloy pipe joint described in the present embodiment, memorial alloy pipe joint described in the present embodiment specifically wraps
Include and use the integrally formed body 1 of Ni-Ti-Nb materials, the body 1 is in hollow cylindrical, the integrally formed receiving of two ends
Portion 2, the receptacle 2 have facilitate conduit insert tapered receiving compartment 12, the receiving compartment 12 in outer imperial palace it is small with this
The hollow cavity connection of body 1；The body 1 is axially inside evenly distributed with least four and is integrally formed with body 1 for solid
Determine the latch 11 of conduit.
Because Ni-Ti-Nb materials possess memory characteristic, and latch 11 is that the most key part is fastened to conduit, although
Latch 11 is made of other memorial alloys or metal material, can equally realize fastening effect, but because it is in not equality of temperature
The contraction of degree is inconsistent, influences whether the effect of fit sealing, while planted agent's masterpiece is easily produced between latch 11 and body 1
With, long-term use easily causes the fatigue phenomenon of latch 11, or even the problem of crack fracture, and be formed in and added using different materials
Work be fixedly connected during for overall digital control processing it is more complicated.
What deserves to be explained is：Scheme of the present invention is the peculiar property using memorial alloy, but the peculiar property is not
Claimed point, but the pipe joint manufactured and designed using memorial alloy peculiar property in itself be different from it is existing
The unique texture of technology.
Operation principle and installation method：
First, when processing pipe joint of memory alloy, internal diameter of pipe joint is slightly smaller than catheter outer diameter, realizes between pipe joint and conduit
Interference fit, eliminate fit clearance, reach closed effect.It is expanding in -59 °C~-62 °C progress of low temperature, make in pipe joint
Footpath is slightly larger than catheter outer diameter.Expanding purpose is for convenience to be installed together conduit and pipe joint, is easy to conduit light
Be inserted in pipe joint, assembled at normal temperatures, connecting conduit and pipe joint.The conduit tube component assembled is warmed to
120 °C, internal diameter of pipe joint returns to slightly smaller than catheter outer diameter, pipe joint crimping is lived conduit, is then cooled to normal temperature, realizes pipe
Interference fit between joint and conduit and it is tightly connected.What deserves to be explained is the surface roughness due to connected conduit
It is larger, although pipe joint is interference fit with conduit after heat shrink, because contact area is big, can not still guarantee
Enough absolute to be tightly connected, so being provided with four latches, because the cross-sectional area of latch is small, pressure is big, and internal diameter compares conduit
External diameter is small, can produce huge circumference radial load and conduit is pressed into local contraction deformation, realize air-tight fit.Secondly, by card
Tooth, which is evenly distributed, is arranged to four, and the conduit of any one end at least there are two latches 11 to coordinate, and further improves and leads
The radial seal of pipe and axial tensile-strength, conduit is avoided when by axial tension, because fastening force is too low by described first
The problem of separating is pulled between the conduit 4 of conduit 3 and/or second and the memorial alloy pipe joint.
Embodiment 2：
In order to further realize the present invention, strengthen the fastening effect of pipe joint, on the basis of embodiment 1, further
With reference to shown in accompanying drawing 3-4, it is preferable that the section of the latch 11 is trapezoidal and trapezoidal bottom and the integrally connected of body 1.
In the present embodiment, the trapezoidal latch 11 is included as the first inclined-plane 111 of trapezoidal two waist and the second inclined-plane
113, and the top surface 112 as trapezoidal top margin；First inclined-plane 111 is equal with the width on the second inclined-plane 113 and and top surface
112-75 ° of angle a=60 °.What deserves to be explained is because existing conduit generally use aluminum alloy material makes, it is mainly sharp
With the advantages of intensity of aluminum alloy is high, corrosion-resistant, light weight and plasticity are good, however, it can be seen from formula F=PS pressure formula, when
Lifting surface area S is smaller, and under the effect of identical directed force F, pressure P is bigger；Pressed part amount of plastic deformation is bigger.By angle
The purpose that a is arranged to 60 ° -75 ° is to obtain the thrust of maximum in the range of ensureing that conduit is normally plastically deformed.Due to
A angle is set smaller, the section of described latch 11 seems about gentle, and the compression and closed effect for conduit are got over
It is weak；A angle is set bigger, such as 90 °, then the rectangular in cross-section of latch 11, compression and closed effect to conduit are most
By force, but because the space between latch 11 and the inwall of body 1 does not have inclined-plane as buffering area, conduit compressive deformation can be caused excessive
And the problem of ftractureing, therefore, according to existing aluminum alloy conduit, a angle is arranged to 60 ° of -75 ° of obturation effects and to conduit
Fit sealing effect it is highly stable.
In order to preferably realize the present invention, prevent conduit crackle from producing, in the present embodiment, the width of the top surface 112 with
The ratio of the width of first inclined-plane 111 is 1:3-1:4, top surface 112 is put down with the first inclined-plane 111 and the second inclined-plane 113 by circular arc r
Degree of slipping over connects, the circular arc r=0.1 times top surface width.The top surface 112 and the first inclined-plane 111 and the second inclined-plane 113 is equal
The purpose connected by circular arc r smooth excessivenesses is in order to prevent in compaction process, due to rib caused by two inclined-planes intersection
Line too narrow and small the problem of causing stress concentration, causing catheter rupture, produces.By the mesh that circular arc r values are 0.1 times of top surface width
Be according to pipe joint and the increase of the increase of the size of the latch 11 circular arc equal proportion, avoid in connection large-size conduit
When, there is the problem of stress concentration because circular arc r is too small.
Embodiment 3：
In order to preferably realize the present invention, on the basis of embodiment 1, the realization knot of another latch 11 is present embodiments provided
Structure, in the present embodiment, the section of the latch 11 is made up of trapezoidal sections and arc section 116, base and the body 1 of the trapezoidal sections
Integrally connected, the top margin of the trapezoidal sections and the integrally connected of arc section 116, two waists of the trapezoidal sections be respectively with it is described
The 3rd inclined-plane 114 and the 4th inclined-plane 115 of the smooth excessiveness of arc section 116 connection.The face of the latch 11 and catheter contact is set
The problem of being set to cambered surface, being preferably bonded conduit, and avoid stress concentration from causing catheter rupture produces.
In order to preferably realize the present invention, the axle of the taper surface 13 and the body 1 of the inwall formation of the receiving compartment 12
To angle β=5 ° of place straight line.It is to be more easily installed in order to facilitate conduit in the joint by the angle β purposes for being arranged to 5 °
Interior, because comparatively the installing space of aircraft pipe joint compares limitation, opening character is excessively poor, is unfavorable for entering for installation
OK, therefore, installation can more easily be realized by receiving compartment 12 being arranged into angle of inclination；Further, shunk in memorial alloy
Afterwards, receiving compartment 12 can be bonded with conduit outer wall completely, when the setting of slanted angle β angles is excessive then easily close in receiving compartment 12
Body 1 is sequentially generated space, is unfavorable for evenly distributing for stress.
It is described above, be only presently preferred embodiments of the present invention, any formal limitation not done to the present invention, it is every according to
Any simply modification, the equivalent variations made according to the technical spirit of the present invention to above example, each fall within the protection of the present invention
Within the scope of.
Claims (6)
- A kind of 1. memorial alloy pipe joint, for realizing that fastener-free conduit is tightly connected, it is characterised in that：Including using The integrally formed body of Ni-Ti-Nb materials（1）, the body（1）In hollow cylindrical, the integrally formed receptacle of two ends （2）, the receptacle（2）With the tapered receiving compartment for facilitating conduit to insert（12）, the receiving compartment（12）In outer imperial palace Small and body（1）Hollow cavity connection；The body（1）Axially inside it is evenly distributed with least four and body（1）One The body formed latch for A/C（11）.
- A kind of 2. memorial alloy pipe joint according to claim 1, it is characterised in that：The latch（11）Section be Trapezoidal and trapezoidal bottom and body（1）Integrally connected.
- A kind of 3. memorial alloy pipe joint according to claim 2, it is characterised in that：The trapezoidal latch（11） Including the first inclined-plane as trapezoidal two waist（111）With the second inclined-plane（113）, and the top surface as trapezoidal top margin（112）；Institute State the first inclined-plane（111）With the second inclined-plane（113）Width is equal and and top surface（112）- 75 ° of angle a=60 °.
- A kind of 4. memorial alloy pipe joint according to claim 3, it is characterised in that：The top surface（112）Width With the first inclined-plane（111）The ratio of width is 1:3-1:4, top surface（112）With the first inclined-plane（111）With the second inclined-plane（113） Connected by circular arc r smooth excessivenesses, the circular arc r=0.1 times top surface width.
- A kind of 5. memorial alloy pipe joint according to claim 1, it is characterised in that：The latch（11）Section by Trapezoidal sections and arc section（116）Composition, the base of the trapezoidal sections and body（1）Integrally connected, the top margin of the trapezoidal sections with The arc section（116）Integrally connected, two waists of the trapezoidal sections are respectively and the arc section（116）Smooth excessiveness connection 3rd inclined-plane（114）With the 4th inclined-plane（115）.
- A kind of 6. memorial alloy pipe joint according to claim 1, it is characterised in that：The receiving compartment（12）Inwall The taper surface of formation（13）With the body（1）Axially where straight line angle β=5 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486843.0A CN107489831A (en) | 2017-06-23 | 2017-06-23 | A kind of memorial alloy pipe joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710486843.0A CN107489831A (en) | 2017-06-23 | 2017-06-23 | A kind of memorial alloy pipe joint |
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| CN107489831A true CN107489831A (en) | 2017-12-19 |
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| CN201710486843.0A Pending CN107489831A (en) | 2017-06-23 | 2017-06-23 | A kind of memorial alloy pipe joint |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108317315A (en) * | 2018-03-27 | 2018-07-24 | 日丰企业（佛山）有限公司 | It is flared connecting positioning sleeve, connecting pipe and pipe fitting connecting method |
| CN111229834A (en) * | 2020-02-25 | 2020-06-05 | 沈阳时代传感器科技有限公司 | Self-contraction ribbed fastening pipe sleeve and preparation method thereof |
| US11788655B2 (en) | 2021-07-20 | 2023-10-17 | General Electric Company | Tube coupling |
| US11802640B2 (en) | 2021-07-20 | 2023-10-31 | General Electric Company | Tube coupling |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317315A (en) * | 2018-03-27 | 2018-07-24 | 日丰企业（佛山）有限公司 | It is flared connecting positioning sleeve, connecting pipe and pipe fitting connecting method |
| CN108317315B (en) * | 2018-03-27 | 2023-12-29 | 日丰企业（佛山）有限公司 | Flaring connection positioning sleeve, connection pipe fitting and pipe fitting connection method |
| CN111229834A (en) * | 2020-02-25 | 2020-06-05 | 沈阳时代传感器科技有限公司 | Self-contraction ribbed fastening pipe sleeve and preparation method thereof |
| US11788655B2 (en) | 2021-07-20 | 2023-10-17 | General Electric Company | Tube coupling |
| US11802640B2 (en) | 2021-07-20 | 2023-10-31 | General Electric Company | Tube coupling |
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Application publication date: 20171219 |