CN102226953A - Pull rod for spatial superconducting magnets - Google Patents
Pull rod for spatial superconducting magnets Download PDFInfo
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- CN102226953A CN102226953A CN2011100785342A CN201110078534A CN102226953A CN 102226953 A CN102226953 A CN 102226953A CN 2011100785342 A CN2011100785342 A CN 2011100785342A CN 201110078534 A CN201110078534 A CN 201110078534A CN 102226953 A CN102226953 A CN 102226953A
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Abstract
The invention provides a pull rod which is used for a spatial superconducting magnet, wherein the pull rod is composed of a cold-end pull rod (1), a middle-section outer pull rod (2), a middle-section inner pull rod (3) and a hot-end pull rod (4), wherein the cold-end pull rod (1), the middle-section outer pull rod (2), the middle-section inner pull rod (3) and the hot-end pull rod (4) are integrated into a whole through a cold-end H-shaped clamp (5) and a hot-end H-shaped clamp (6); one end of the cold-end pull rod (1) is connected with the spatial superconducting magnet; the middle-section inner pull rod (3) is arranged in the middle-section outer pull rod (2), the horizontal lines of the centers of the middle-section inner pull rod (3) and the middle-section outer pull rod (2) are coincided; one end of the hot-end pull rod (4) is connected with a hot-end fixing device (14); and the hot-end fixing device (14) is connected with a vacuum container of the spatial superconducting magnet. The cold-end pull rod (1) is in a 1.8K-4K temperature zone, the middle-section outer pull rod (2) and the middle-section inner pull rod (3) are all in a 4K-77K temperature zone, and the hot-end pull rod (4) is in a temperature zone within the range from 77K to the normal temperature.
Description
Technical field
The present invention relates to a kind of superconducting magnet pull bar, particularly be used for the pull bar of space superconducting magnet.
Background technology
Magnetic spectrograph is the particle detector a kind of commonly used in the study of high energy physics, and it can measure the deflection of charged particle in magnetic field, obtains the power spectrum of high-energy cosmic rays in the earth atmosphere outer space, and can measure each element and isotopic content in the cosmic ray.Magnetic spectrograph helps space exploration to dark matter and antimatter and the new breakthrough that may bring high-energy physics to the ultra-sensitivity characteristic of material.The core component of magnetic spectrograph is permanent magnet or superconducting magnet.Compare with permanent magnet, superconducting magnet has the advantage that volume is little, in light weight, energy consumption is low and magnetic field intensity is high.The superconducting magnet volume is little, in light weight, advantage of low energy consumption helps the operation of magnetic spectrograph in space, and the advantage that magnetic field intensity is high can improve the sensitivity of magnetic spectrograph particle detection.Therefore, superconducting magnet is applied in the space exploration more and more widely.Such as, Alpha magnetic spectrometer of new generation (AMS-02) has just adopted superconducting magnet, and central magnetic field reaches 0.87 tesla.
The space superconducting magnet is operated in the low temperature environment.The coil number of plies of space superconducting magnet is less, belongs to the large thin-wall superconducting magnet, and magnet surface is furnished with coil pipe.The type of cooling of space superconducting magnet is liquid helium noncontact cooling, and liquid helium flows in coil pipe, cools off magnet by coil pipe with contacting of magnet.For keeping low temperature environment, the space superconducting magnet also must be in the enclosed vacuum container, is connected with vacuum tank by pull bar.
The effect of pull bar is that the space superconducting magnet is suspended in the vacuum tank.At first, pull bar must have good mechanical characteristic, and is big such as rigidity, length is short and cross-sectional area is big, the high acceleration power when bearing spacecraft emission and landing.In addition, for the low-temperature working environment that guarantees the space superconducting magnet and guarantee the running time of magnet in the space station, the leakage heat that vacuum tank conducts to magnet by pull bar must be as far as possible little.Low heat conduction requirement pull bar rigidity is little, length is long and cross-sectional area is little.Obviously, the mechanical characteristic of pull bar and thermal conduction characteristic require conflicting.Therefore, pull bar has important effect for the safe and stable operation of space superconducting magnet.
Summary of the invention
The objective of the invention is to overcome the shortcoming that existing pull bar mechanical characteristic and thermal conduction characteristic requirement are difficult to be in harmonious proportion, a kind of pull bar of superconducting magnet is provided.This pull bar is particularly useful for the space superconducting magnet, can satisfy the requirement of pull bar mechanical characteristic and thermal conduction characteristic simultaneously.
Pull bar of the present invention mainly is made up of four sections pull bars, is respectively cold junction pull bar, interlude outside link, interlude draw-in bar and hot junction pull bar.One end of cold junction pull bar is connected with the space superconducting magnet, and the other end of cold junction pull bar is connected with the nearly magnet end of cold junction H type folder.One end of interlude outside link is connected with the middle part of cold junction H type folder, and the other end of interlude outside link then is connected with the middle part of hot junction H type folder.The inside of the interlude draw-in bar section of mediating outside link, both central horizontal lines overlap.One end of interlude draw-in bar is connected with the magnet end far away of cold junction H type folder, and the other end of interlude draw-in bar is connected with the nearly magnet end of hot junction H type folder.One end of hot junction pull bar is connected with the magnet end far away of hot junction H type folder, and the other end of hot junction pull bar is connected with the hot junction fixture, and the hot junction fixture is connected with the vacuum tank of space superconducting magnet.
As previously mentioned, cold junction pull bar, interlude outside link, interlude draw-in bar and four sections pull bars of hot junction pull bar connect into an integral body by cold junction H type folder and hot junction H type folder.Cold junction H type folder and hot junction H type folder are stainless steel material and make, and are the H shape.Cold junction H type accompanies three pin-and-holes, and its nearly magnet end pin-and-hole, middle part pin-and-hole, magnet end pin-and-hole far away are concentric with the pin-and-hole of second largest support set, the third-largest support set, the first little support set respectively, and the aperture is corresponding respectively consistent.H type folder in hot junction also has three pin-and-holes, and its nearly magnet end pin-and-hole, magnet end pin-and-hole far away are concentric with the pin-and-hole of the second little support set, the fourth-largest support set respectively, and the aperture is corresponding respectively consistent.The middle part pin-and-hole of hot junction H type folder is corresponding with the arch door shape pin-and-hole of passive release unit.
Described cold junction pull bar adopts high-intensity carbon fibre material to make, and is runway shape.The circular arc inboard, two ends of cold junction pull bar is equipped with first support set and second largest support set respectively.First support set and second largest support set adopt stainless steel material to make, for cylindrical.The radius of circle of columniform first support set and second largest support set is consistent with the inner arc radius at cold junction pull bar two ends, and the center of first support set and second largest support set has pin-and-hole and is used to wear pin.Be pasted with the Teflon film on the contact-making surface of two arc ends of cold junction pull bar and first support set, second largest support set, to alleviate wearing and tearing.Pin passes from the pin-and-hole of first support set, and passes the pin-and-hole of the pull bar fixture that is positioned at superconducting magnet surface, space, thereby an end of cold junction pull bar is connected with the space superconducting magnet.Another pin passes from the pin-and-hole of second largest support set, and passes the nearly magnet end pin-and-hole of cold junction H type folder, thereby the other end of cold junction pull bar is connected with the nearly magnet end of cold junction H type folder.
Described interlude outside link adopts the higher Kevlar material of intensity to make, and is runway shape.The circular arc inboard, two ends of interlude outside link is equipped with the third-largest support set and passive release unit respectively.The third-largest support set adopts stainless steel material to make, for cylindrical.The radius of circle of columniform the third-largest support set is consistent with the inner arc radius of the nearly magnet end of interlude outside link, and the center of the third-largest support set has pin-and-hole and is used to wear pin.Passive release unit adopts stainless steel material to make, and basic configuration is an arch.The arc radius of the passive release unit of arch is consistent with the inner arc radius of interlude outside link magnet end far away, and passive release unit has the arch door shape pin-and-hole and is used to wear pin.In addition, passive release unit also has Teflon band fixed groove.The Teflon band is wrapped on the Teflon band fixed groove, thereby makes passive release unit and interlude outside link fix as a whole.Be pasted with the Teflon film on the contact-making surface of two arc ends of interlude outside link and the third-largest support set, passive release unit, to alleviate wearing and tearing.Pin passes from the pin-and-hole of the third-largest support set, and passes the middle part pin-and-hole of cold junction H type folder, thereby an end of interlude outside link is connected with the middle part that cold junction H type presss from both sides.Another pin passes from the arch door shape pin-and-hole of passive release unit, and passes from the middle part pin-and-hole of hot junction H type folder, thereby the other end of interlude outside link is connected with the middle part of hot junction H type folder.
Described interlude draw-in bar adopts the expoxy glass steel of low thermal conductance to make, and is runway shape.The circular arc inboard, two ends of interlude draw-in bar is equipped with the first little support set and the second little support set respectively.The first little support set and the second little support set all adopt stainless steel material to make, for cylindrical.The radius of circle of the columniform first little support set and the second little support set is consistent with the two ends inner arc radius of interlude draw-in bar, and the center of the first little support set and the second little support set has pin-and-hole and is used to wear pin.Be pasted with the Teflon film on the contact-making surface of two arc ends of interlude draw-in bar and the first little support set, the second little support set, to alleviate wearing and tearing.Pin passes from the pin-and-hole of the first little support set, and passes the magnet end pin-and-hole far away of cold junction H type folder, thereby an end of interlude draw-in bar is connected with the magnet end far away that cold junction H type presss from both sides.Another pin passes from the pin-and-hole of the second little support set, and passes the nearly magnet end pin-and-hole of hot junction H type folder, thereby the other end of interlude draw-in bar is connected with the nearly magnet end of hot junction H type folder.
The pull bar same expoxy glass steel of low thermal conductance that adopts in described hot junction is made, and is water droplet shape.The fourth-largest support set is equipped with in the arc end inboard of hot junction pull bar.The fourth-largest support set adopts stainless steel material to make, for cylindrical.The radius of circle of columniform the fourth-largest support set is consistent with the inner arc radius of the arc end of hot junction pull bar, and the center of the fourth-largest support set has pin-and-hole and is used to wear pin.Be pasted with the Teflon film on the arc end of hot junction pull bar and the contact-making surface of the fourth-largest support set, to alleviate wearing and tearing.Pin passes from the pin-and-hole of the fourth-largest support set, and passes the magnet end pin-and-hole far away of hot junction H type folder, thereby an end of hot junction pull bar is connected with the magnet end far away that hot junction H type presss from both sides.The other end of hot junction pull bar is connected with the hot junction fixture.The hot junction fixture is cylindrical, adopts stainless steel material to make, and the end of hot junction fixture is furnished with screw thread and cooperates with the vacuum tank of space superconducting magnet and kills.
Pull bar of the present invention has following two kinds of groundwork states: the first, and when the space superconducting magnet was in ground or space, the pulling force that pull bar bore was less.At this moment, pin passes the middle part pin-and-hole of hot junction H type folder and the arch door shape pin-and-hole of passive release unit, and is in the middle part of arch door shape pin-and-hole.In this case, the pulling force of space superconducting magnet is born jointly by cold junction pull bar, interlude draw-in bar and hot junction pull bar, and the interlude outside link is not born the tension of space superconducting magnet.In addition, when pin was in the middle part of arch door shape pin-and-hole, interlude outside link and space superconducting magnet heat were isolated, and promptly the interlude outside link is 0 how much to the conductive heat leakage of space superconducting magnet, and this helps the thermally-stabilised of space superconducting magnet; The second, when the space superconducting magnet is in emission or the landing process, pull bar will be subjected to the very big acceleration force that is directed upwardly.Under the effect of high acceleration power, the interlude draw-in bar will extend, and hot junction H type folder and pin all move to the magnet arc end far away of interlude outside link simultaneously, contact up to the arc end of pin with passive release unit arch door shape pin-and-hole.When pin contacts with the arc end of passive release unit arch door shape pin-and-hole, the interlude outside link begins to bear tension, the pulling force that is the space superconducting magnet is born jointly by cold junction pull bar, interlude draw-in bar, interlude outside link and hot junction pull bar, thereby the intensity of whole pull bar has obtained enhancing.In addition, when pin contacted with the arc end of passive release unit arch door shape pin-and-hole, interlude outside link and space superconducting magnet belonged to same heat passage, and promptly the interlude outside link is to space superconducting magnet conductive heat leakage.Yet because the time of emission of space superconducting magnet or landing is shorter, the conductive heat leakage of interlude outside link is little to the influence of space superconducting magnet stable operation.
The present invention is simple in structure, can satisfy the especially requirement of superconducting magnet pull bar in space aspect mechanical characteristic and thermal conduction characteristic two of superconducting magnet pull bar simultaneously.
Description of drawings
Fig. 1 is the centre section structural representation of space of the present invention superconducting magnet pull bar, among the figure: 1 cold junction pull bar, 2 interlude outside links, 3 interlude draw-in bars, 4 hot junction pull bars, 5 cold junction H types folder, 6 hot junction H type folders, 7 first support sets, 8 second largest support sets, 9 the third-largest support sets, 10 first little support sets, 11 second little support sets, 12 the fourth-largest support sets, 13 passive release units, 14 hot junction fixtures;
Fig. 2 be the space superconducting magnet in ground or space, the structural representation when interlude outside link 2 of the present invention does not bear pulling force is among the figure: 2 interlude outside links, 13 passive release units, 15Teflon band fixed groove, 16 pins;
Fig. 3 is the space superconducting magnet in emission or landing process, in the structural representation when interlude outside link 2 of the present invention bears pulling force: 2 interlude outside links, 13 passive release units, 15Teflon band fixed groove, 16 pins.
Embodiment
The present invention is further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, pull bar of the present invention mainly is made up of four sections pull bars, be respectively cold junction pull bar 1, interlude outside link 2, interlude draw-in bar 3 and hot junction pull bar 4, cold junction pull bar 1, interlude outside link 2, interlude draw-in bar 3 and 4 four sections pull bars of hot junction pull bar connect into an integral body by cold junction H type folder 5 and hot junction H type folder 6.One end of cold junction pull bar 1 is connected with the space superconducting magnet, and the other end of cold junction pull bar 1 is connected with the nearly magnet end of cold junction H type folder 5.Cold junction pull bar 1 is in the warm area of 1.8K to 4K.One end of interlude outside link 2 is connected with the middle part of cold junction H type folder 5, and the other end of interlude outside link 2 is connected with the middle part of hot junction H type folder 6.The inside of interlude draw-in bar 3 section of mediating outside links 2, both central horizontal lines overlap.One end of interlude draw-in bar 3 is connected with the magnet end far away of cold junction H type folder 5, and the other end of interlude draw-in bar 3 is connected with the nearly magnet end of hot junction H type folder 6.Interlude outside link 2 and interlude draw-in bar 3 all are in the warm area of 4K to 77K.One end of hot junction pull bar 4 is connected with the magnet end far away of hot junction H type folder 6, and the other end of hot junction pull bar 4 is connected with hot junction fixture 14, and hot junction fixture 14 is connected with the vacuum tank of space superconducting magnet.Hot junction pull bar 4 is in the warm area of 77K to normal temperature.
Cold junction H type folder 5 and hot junction H type folder 6 are stainless steel material and make, and are the H shape.Cold junction H type folder 5 has three pin-and-holes, and its nearly magnet end pin-and-hole, middle part pin-and-hole, magnet end pin-and-hole far away are concentric with the pin-and-hole of second largest support set 8, the third-largest support set 9, the first ramuscule support set 10 respectively, and the aperture is corresponding respectively consistent.Hot junction H type folder 6 also has three pin-and-holes, and its nearly magnet end pin-and-hole, magnet end pin-and-hole far away are concentric with the pin-and-hole of the second ramuscule support set 11, the fourth-largest support set 12 respectively, and the aperture is corresponding respectively consistent.The middle part pin-and-hole of hot junction H type folder 6 is corresponding with the arch door shape pin-and-hole of passive release unit 13.
Cold junction pull bar 1 adopts high-intensity carbon fibre material to make, and is runway shape.The circular arc inboard, two ends of cold junction pull bar 1 is equipped with first support set 7 and second largest support set 8 respectively.First support set 7 and second largest support set 8 all adopt stainless steel material to make, for cylindrical.The radius of circle of columniform first support set 7 and second largest support set 8 is consistent with the inner arc radius at cold junction pull bar 1 two ends, and the center of first support set 7 and second largest support set 8 has pin-and-hole and is used to wear pin.Be pasted with the Teflon film on the contact-making surface of 1 two arc ends of cold junction pull bar and first support set 7, second largest support set 8, to alleviate wearing and tearing.Pin passes from the pin-and-hole of first support set 7, and passes the pin-and-hole of the pull bar fixture that is positioned at superconducting magnet surface, space, thereby an end of cold junction pull bar 1 is connected with the space superconducting magnet.Another pin passes from the pin-and-hole of second largest support set 8, and passes the nearly magnet end pin-and-hole of cold junction H type folder 5, thereby the other end of cold junction pull bar 1 is connected with the nearly magnet end of cold junction H type folder 5.
Interlude outside link 2 adopts the higher Kevlar material of intensity to make, and is runway shape.The circular arc inboard, two ends of interlude outside link 2 is equipped with the third-largest support set 9 and passive release unit 13 respectively.The third-largest support set 9 adopts stainless steel material to make, for cylindrical.The radius of circle of columniform the third-largest support set 9 is consistent with the inner arc radius of interlude outside link 2 nearly magnet ends, and the center of the third-largest support set 9 has pin-and-hole and is used to wear pin.Passive release unit 13 adopts stainless steel material to make, and basic configuration is an arch.The arc radius of the passive release unit 13 of arch is consistent with the inner arc radius of interlude outside link 2 magnet ends far away, and passive release unit 13 has the arch door shape pin-and-hole and is used to wear pin.In addition, passive release unit 13 also has Teflon band fixed groove 15.The Teflon band is wrapped on the Teflon band fixed groove 15, thereby makes passive release unit 13 fixing as a whole with interlude outside link 2.Be pasted with the Teflon film on the contact-making surface of 2 two arc ends of interlude outside link and the third-largest support set 9, passive release unit 13, to alleviate wearing and tearing.Pin passes from the pin-and-hole of the third-largest support set 9, and passes the middle part pin-and-hole of cold junction H type folder 5, is connected thereby an end that makes interlude outside link 2 and cold junction H type press from both sides 5 middle part.
Another pin passes from the arch door shape pin-and-hole of passive release unit 13, and passes from the middle part pin-and-hole of hot junction H type folder 6, thereby the other end of interlude outside link 2 is connected with the middle part of hot junction H type folder 6.
Interlude draw-in bar 3 adopts the expoxy glass steel of low thermal conductance to make, and is runway shape.The circular arc inboard, two ends of interlude draw-in bar 3 is equipped with the first ramuscule support set 10 and the second ramuscule support set 11 respectively.The first ramuscule support set 10 and the second ramuscule support set 11 all adopt stainless steel material to make, for cylindrical.The radius of circle of the columniform first ramuscule support set 10 and the second ramuscule support set 11 is consistent with the two ends inner arc radius of interlude draw-in bar 3, and the center of the first ramuscule support set 10 and the second ramuscule support set 11 has pin-and-hole and is used to wear pin.Be pasted with the Teflon film on the contact-making surface of 3 two arc ends of interlude draw-in bar and the first ramuscule support set 10, the second ramuscule support set 11, to alleviate wearing and tearing.Pin passes from the pin-and-hole of the first ramuscule support set 10, and passes the magnet end pin-and-hole far away of cold junction H type folder 5, is connected thereby an end that makes interlude draw-in bar 3 and cold junction H type press from both sides 5 magnet end far away.Another pin passes from the pin-and-hole of the second ramuscule support set 11, and passes the nearly magnet end pin-and-hole of hot junction H type folder 6, thereby the other end of interlude draw-in bar 3 is connected with the nearly magnet end of hot junction H type folder 6.
The pull bar 4 same expoxy glass steel of low thermal conductance that adopt in hot junction are made, and are water droplet shape.The fourth-largest support set 12 is equipped with in the arc end inboard of hot junction pull bar 4.The fourth-largest support set 12 adopts stainless steel material to make, for cylindrical.The radius of circle of columniform the fourth-largest support set 12 is consistent with the inner arc radius of the arc end of hot junction pull bar 4, and the center of the fourth-largest support set 12 has pin-and-hole and is used to wear pin.Be pasted with the Teflon film on the contact-making surface of the arc end of hot junction pull bar 4 and the fourth-largest support set 12, to alleviate wearing and tearing.Pin passes from the pin-and-hole of the fourth-largest support set 12, and passes the magnet end pin-and-hole far away of hot junction H type folder 6, is connected thereby an end that makes hot junction pull bar 4 and hot junction H type press from both sides 6 magnet end far away.The other end of hot junction pull bar 4 is connected with hot junction fixture 14.Hot junction fixture 14 is cylindrical, adopts stainless steel material to make, and the end of hot junction fixture 14 is furnished with screw thread and cooperates with the vacuum tank of space superconducting magnet and kills.
Fig. 2 be the space superconducting magnet in ground or space, the structural representation when interlude outside link 2 of the present invention does not bear pulling force.When the space superconducting magnet was in ground or space, the pulling force that pull bar bore was less.At this moment, pin 16 passes the middle part pin-and-hole of hot junction H type folder 6, and passes the arch door shape pin-and-hole of passive release unit 13, and is in the middle part of arch door shape pin-and-hole.In this case, interlude outside link 2 is not born the tension of space superconducting magnet.
In addition, when pin 16 was in the middle part of arch door shape pin-and-hole, pin 16 was less with the contact-making surface of passive release unit 13, so the thermal resistance between pin 16 and the passive release unit 13 is bigger.By aforesaid Tiebar structure as can be known, pin 16 belongs to same heat passage with hot junction H type folder 6, space superconducting magnet, and passive release unit 13 belongs to same heat passage with interlude outside link 2.Like this, interlude outside link 2 is isolated with space superconducting magnet heat, and promptly interlude outside link 2 is 0 how much to the conductive heat leakage of space superconducting magnet, and this helps the thermally-stabilised of space superconducting magnet.
Fig. 3 is the space superconducting magnet in emission or landing process, the structural representation when interlude outside link 2 of the present invention bears pulling force.When the space superconducting magnet is in emission or the landing process, pull bar will be subjected to the very big acceleration force that is directed upwardly.Under the effect of high acceleration power, interlude draw-in bar 3 will extend, and hot junction H type folder 6 and pin 16 all move to the magnet arc end far away of interlude outside link 2 simultaneously, coincide up to the arc end of pin 16 with passive release unit 13 arch door shape pin-and-holes.When pin 16 contacted with the arc end of passive release unit 13 arch door shape pin-and-holes, interlude outside link 2 began to bear tension, thereby has strengthened the intensity of whole pull bar.When pin 16 contacted with the arc end of passive release unit 13 arch door shape pin-and-holes, the contact-making surface between pin 16 and the passive release unit 13 was big or thermal resistance is less.Analyze according to aforesaid hot road, when pin 16 contacted with the arc end of passive release unit 13 arch door shape pin-and-holes, interlude outside link 2 belonged to same heat passage with the space superconducting magnet, and promptly interlude outside link 2 is to space superconducting magnet conductive heat leakage.Yet because the time of emission of space superconducting magnet or landing is shorter, the conductive heat leakage of interlude outside link 2 is little to the influence of space superconducting magnet stable operation.
The content that is not described in detail in the specification of the present invention belongs to this area professional and technical personnel's known prior art.
Claims (9)
1. pull bar that is used for the space superconducting magnet is characterized in that described pull bar is made up of cold junction pull bar (1), interlude outside link (2), interlude draw-in bar (3) and hot junction pull bar (4); Cold junction pull bar (1), interlude outside link (2), interlude draw-in bar (3) and hot junction pull bar (4) connect into an integral body by cold junction H type folder (5) and hot junction H type folder (6); One end of cold junction pull bar (1) is connected with the space superconducting magnet, and the other end of cold junction pull bar (1) is connected with the nearly magnet end of cold junction H type folder (5); One end of interlude outside link (2) is connected with the middle part of cold junction H type folder (5), and the other end of interlude outside link (2) is connected with the middle part of hot junction H type folder (6); The inside of interlude draw-in bar (3) section of mediating outside link (2), the central horizontal line of interlude draw-in bar (3) and interlude outside link (2) overlaps; One end of interlude draw-in bar (3) is connected with the magnet end far away of cold junction H type folder (5), and the other end of interlude draw-in bar (3) is connected with the nearly magnet end of hot junction H type folder (6); One end of hot junction pull bar (4) is connected with the magnet end far away of hot junction H type folder (6), and the other end of hot junction pull bar (4) is connected with hot junction fixture (14), and hot junction fixture (14) is connected with the vacuum tank of space superconducting magnet.
2. the pull bar that is used for the space superconducting magnet as claimed in claim 1 is characterized in that described cold junction pull bar (1) is runway shape; Two arc end inboards of cold junction pull bar (1) are equipped with first support set (7) and second largest support set (8) respectively; First support set (7) and second largest support set (8) are cylindrical, and the radius of circle of cylinder is consistent with the inner arc radius of cold junction pull bar (1) two arc end, and the center of first support set (7) and second largest support set (8) has pin-and-hole and is used to wear pin; Pin passes from the pin-and-hole of first support set (7), and passes the pin-and-hole of the pull bar fixture that is positioned at superconducting magnet surface, space, and an end of cold junction pull bar (1) is connected with the space superconducting magnet; Another pin passes from the pin-and-hole of second largest support set (8), and passes the nearly magnet end pin-and-hole of cold junction H type folder (5), and the other end of cold junction pull bar (1) is connected with the nearly magnet end of cold junction H type folder (5).
3. the pull bar that is used for the space superconducting magnet as claimed in claim 1 is characterized in that described interlude outside link (2) is runway shape; Two arc end inboards of interlude outside link (2) are equipped with the third-largest support set (9) and passive release unit (13) respectively; The third-largest support set (9) is cylindrical, and the radius of circle of cylinder is consistent with the inner arc radius of interlude outside link (2) arc end, and the center of the third-largest support set (9) has pin-and-hole and is used to wear pin; Passive release unit (13) is an arch, and the arc radius of the passive release unit (13) of arch is consistent with the inner arc radius of interlude outside link (2) arc end, and the passive release unit (13) of arch has the arch door shape pin-and-hole and is used to wear pin; Have Teflon band fixed groove (15) on the passive release unit (13), the Teflon band is wrapped on the Teflon band fixed groove (15), makes passive release unit (13) and interlude outside link (2) fixing as a whole; A pin passes the pin-and-hole of the third-largest support set (9), and passes the middle part pin-and-hole of cold junction H type folder (5), and an end of interlude outside link (2) is connected with the middle part of cold junction H type folder (5); Another pin passes from the arch door shape pin-and-hole of passive release unit (13), and passes the middle part pin-and-hole of hot junction H type folder (6), and the other end of interlude outside link (2) is connected with the middle part of hot junction H type folder (6).
4. the pull bar that is used for the space superconducting magnet as claimed in claim 1 is characterized in that described interlude draw-in bar (3) is runway shape; Two arc end inboards of interlude draw-in bar (3) are equipped with the first little support set (10) and the second little support set (11) respectively; The first little support set (10) and the second little support set (11) are cylindrical, the radius of circle of cylinder is consistent with the inner arc radius of interlude draw-in bar (3) two arc ends, and the center of the first little support set (10) and the second little support set (11) has pin-and-hole and is used to wear pin; Pin passes from the pin-and-hole of the first little support set (10), and passes the magnet end pin-and-hole far away of cold junction H type folder (5), and an end of interlude draw-in bar (3) is connected with the magnet end far away that cold junction H type presss from both sides (5); Another pin passes from the pin-and-hole of the second little support set (11), and passes the nearly magnet end pin-and-hole of hot junction H type folder (6), and the other end of interlude draw-in bar (3) is connected with the nearly magnet end of hot junction H type folder (6).
5. the pull bar that is used for the space superconducting magnet as claimed in claim 1 is characterized in that described hot junction pull bar (4) is water droplet shape; The fourth-largest support set (12) is equipped with in the arc end inboard of hot junction pull bar (4); The fourth-largest support set (12) is cylindrical, and the radius of circle of cylinder is consistent with the inner arc radius of hot junction pull bar (4) arc end, and the fourth-largest support set (12) center has pin-and-hole and is used to wear pin; Pin passes from the pin-and-hole of the fourth-largest support set (12), and passes the magnet end pin-and-hole far away of hot junction H type folder (6), and an end of hot junction pull bar (4) is connected with the magnet end far away that hot junction H type presss from both sides (6); The other end of hot junction pull bar (4) is connected with hot junction fixture (14); Hot junction fixture (14) is cylindrical, and the end of hot junction fixture (14) is furnished with screw thread and cooperates with the vacuum tank of space superconducting magnet and kills.
6. the pull bar that is used for the space superconducting magnet as claimed in claim 1, it is characterized in that described cold junction pull bar (1) is in the warm area of 1.8K to 4K, interlude outside link (2) and interlude draw-in bar (3) all are in the warm area of 4K to 77K, and hot junction pull bar (4) is in the warm area of 77K to normal temperature.
7. the pull bar that is used for the space superconducting magnet as claimed in claim 1, it is characterized in that described cold junction pull bar (1) adopts carbon fibre material to make, described interlude outside link (2) adopts the Kevlar material to make, and described interlude draw-in bar (3) and hot junction pull bar (4) adopt the expoxy glass steel to make.
8. as any one described pull bar that is used for the space superconducting magnet of claim 2 to 5, it is characterized in that described first support set (7), second largest support set (8), the third-largest support set (9), the first little support set (10), the second little support set (11), the fourth-largest support set (12), and passive release unit (13) and hot junction fixture (14) adopt all stainless steel material to make.
9. as any one described pull bar that is used for the space superconducting magnet of claim 2 to 5, it is characterized in that being pasted with the Teflon film on the contact-making surface of two arc ends of described cold junction pull bar (1) and first support set (7), second largest support set (8); Be pasted with the Teflon film on the contact-making surface of two arc ends of described interlude outside link (2) and the third-largest support set (9), passive release unit (13); Be pasted with the Teflon film on the contact-making surface of two arc ends of described interlude draw-in bar (3) and the first little support set (10), the second little support set (11); Be pasted with the Teflon film on the contact-making surface of the arc end of hot junction pull bar (4) and the fourth-largest support set (12).
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| CN 201110078534 CN102226953B (en) | 2011-03-30 | 2011-03-30 | Pull rod for spatial superconducting magnets |
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| CN 201110078534 CN102226953B (en) | 2011-03-30 | 2011-03-30 | Pull rod for spatial superconducting magnets |
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| CN102226953B (en) | 2013-01-30 |
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