CN102324364A - High-current sliding contact device in vacuum apparatus or sealing device - Google Patents
High-current sliding contact device in vacuum apparatus or sealing device Download PDFInfo
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- CN102324364A CN102324364A CN201110238973A CN201110238973A CN102324364A CN 102324364 A CN102324364 A CN 102324364A CN 201110238973 A CN201110238973 A CN 201110238973A CN 201110238973 A CN201110238973 A CN 201110238973A CN 102324364 A CN102324364 A CN 102324364A
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- sliding contact
- electric current
- big electric
- bending assembly
- sealing device
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- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 238000005452 bending Methods 0.000 claims abstract description 39
- 230000003139 buffering effect Effects 0.000 claims description 28
- 230000001413 cellular effect Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000035882 stress Effects 0.000 abstract description 23
- 230000008646 thermal stress Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 5
- 239000000463 material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- 229910001257 Nb alloy Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- RHDUVDHGVHBHCL-UHFFFAOYSA-N niobium tantalum Chemical compound [Nb].[Ta] RHDUVDHGVHBHCL-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention relates to a high-current sliding contact device in a vacuum apparatus or a sealing device. The problems that a conventional high-current heating device in the vacuum apparatus or the sealing device is difficult to release stress and has high requirements on assembly, thereby seriously influencing the service reliability and the service life of the vacuum apparatus or the sealing device are solved. According to the technical scheme, the high-current sliding contact device comprises a high-current heating device; two ends of the high-current heating device are connected with two ends of a power supply through leading wires; and one end of the high-current heating device is connected with one end of the power supply through a buffer bending subassembly and the sliding contact device as the leading wire at one end. The high-current sliding contact device has a simple structure; the thermal stress can be adequately released; the service reliability of the high-current heating device in the vacuum apparatus or the sealing device is improved; and the early failure caused by the reason can be stopped.
Description
Technical field
The present invention relates to the vacuum electronic technical field, the big electric current sliding contact device in a kind of specifically vacuum device or the sealing device.
Background technology
Two lead-in wires of big electric current electro-heat equipment in existing vacuum device or the vacuum sealing device connect (promptly not having any buffering) firmly with all employings that is connected generally of power supply, and this mode that connects firmly very easily causes the inefficacy or the damage of device owing to can't well be suitable for STRESS VARIATION; Influence useful life, like the filament in the vacuum klystron, its negative electrode common port is fixed on the chassis (or stem stem); Filament is drawn through the insulating porcelain piece on the chassis; All adopt rigid structure to connect during design, filament is the meeting temperature distortion when energising work, and the stress of generation can reach lead-in wire; Because for being rigidly connected; Under non-cushioned condition, the stress of generation very easily causes the open circuit or the short circuit of circuit, causes klystron early failure.Though the designer has adopted the measure of some buffering stress (like the plastic deformation that utilizes supporting construction to carry out on filament lead wire; This form strictness is not elastic deformation in fact, or goes between and can not be free to slide with the thermal stress variation, so its releasable stress of institute is less); But because filament receives thermogenetic stress bigger; Aforesaid way still can not make stress fully discharged, and high to matching requirements, thereby has a strong impact on reliability and the life-span that klystron uses.
Summary of the invention
The objective of the invention is in order to solve the problems of the technologies described above, provide a kind of simple in structure, fully released heat stress, improve the big electric current electro-heat equipment dependability in vacuum device or the sealing device, the big electric current sliding contact device that increases the service life.
Technical scheme comprises big electric current electro-heat equipment, and its two ends are connected with the two ends of power supply through lead-in wire, and an end of said big electric current electro-heat equipment is connected with an end of power supply through the sliding contact device of buffering bending assembly, conduct lead-in wire.
Said sliding contact device is a bar cellular type sliding contact device; Comprise the sliding contact bar that an end is connected with buffering bending assembly; And as the sliding contact seat that goes between and be connected with an end of power supply, sliding contact with it in the endoporus of said sliding contact bar insertion sliding contact seat.
The locating part that the end that can make the sliding contact bar and inner hole wall remain contact condition is housed in the said endoporus.
The other end of said big electric current electro-heat equipment also is connected with the other end of power supply through buffering bending assembly, lead-in wire.
The buffering bending assembly that said and big electric current electro-heat equipment one end is connected comprises the horizontal buffering bending assembly that connects successively and vertically cushions the bending assembly that said vertical buffering bending assembly is connected with the sliding contact device.
The buffering bending assembly that the said and big electric current electro-heat equipment other end is connected is for laterally cushioning the bending assembly.
Said buffering bending component thickness is 0.2～0.4mm, and width is 5～10mm.
In antivacuum state, during through big electric current, the contact point place can produce heat because of the existence of contact resistance, and contact point place temperature will raise.Rising along with temperature; The oxidation gradually of the material at contact point place, contact resistance will increase gradually after the material oxidation, and the temperature at contact point place will raise again; Will produce a kind of vicious circle like this, until surpass contact element the maximum power that can bear and damaging.Here it is, and overwhelming majority's plug-in type in antivacuum state electrically contacts the reason of product failure.The insulating pot of for example using in the daily life, electric cooker, air switch etc.When connecting sliding contact device solves stress problem for big electric current electro-heat equipment, contact resistance is increased, contact point place temperature raises.Will form vicious circle during long-term the use, cause this failure of apparatus.The inventor to vacuum device and or the environmental condition of sealing device analyze, find based on experiment repeatedly: under vacuum state, adopt supporting construction to discharge stress, not only assembling is complicated, technical difficulty is high and Stress Release is insufficient.And when adopting the sliding contact device to connect big electric current electro-heat equipment and power supply, under vacuum state, the contact resistance of sliding contact point unexpectedly not estimation greatly, be in the small range on the contrary.The general power that on contact resistance, is consumed, be controlled at big electric current electro-heat equipment gross power 2% in, so just need not make the requirement of stress aspect, thereby simplify the complexity of installation greatly supporting construction, stress also can fully be discharged.
Said sliding contact device can adopt various forms, like various forms of sliding contact structures such as a contact, line contact, face contacts, in order to guarantee the reliability of sliding contact; The inventor has adopted a kind of bar cellular type sliding contact device especially; The sliding contact bar inserts in the endoporus of sliding contact seat, and is little through a contact reliability height and contact resistance, passes through the further spacing of locating part again; Which kind of guaranteed no matter under state; The sliding contact bar can be accepted the stress that all directions transmission comes, and telescopic movable in the endoporus of sliding contact seat can keep again and inner hole wall good electrical contact state always.The size gap of sliding contact bar and endoporus is suitable, can not be too big, can not be too little, and preferably at 0.8～1mm, excesssive gap can make the scope of activities of sliding contact bar in sliding contact hole shape element excessive, is prone to cause the disconnection in loop; The too small sliding contact bar limitation of activity in endoporus that then can make in gap makes the sliding contact device lose effect.
Can confirm that according to the temperature on the sliding contact bar and the coefficient of expansion under this temperature the sliding contact bar gets into the degree of depth of the endoporus of sliding contact seat; Its depth capacity should guarantee still can not touch at maximum swelling coefficient lower slider contact lever the lowermost end of endoporus, and minimum length should guarantee when work, can from endoporus, not skid off and get final product.
And because stress possibly discharge to the horizontal and vertical different directions that waits, the inventor analyzes and researches to this dispose procedure and direction, will be the Stress Transfer of different directions and release to the sliding contact device through one or more buffering bending assemblies of being provided with.
Beneficial effect:
1. apparatus of the present invention satisfy under the situation of excellent electric contact between the components and parts under vacuum state; Fully having alleviated big electric current electro-heat equipment is out of shape in process of expansion and contraction, produces stress and the short circuit, the fracture that take place; The problem that causes vacuum device or sealing device to lose efficacy; It is safe and reliable to have guaranteed that equipment uses, and can effectively stop the early failure that big electric current electro-heat equipment causes owing to expanding with heat and contract with cold, and the reliability of device improves greatly.
2. because the release of stress is accomplished by apparatus of the present invention, therefore require to reduce, make the installation of vacuum device or sealing device and maintenance more simple and reliable, reduced production cost, shortened the production cycle for supporting construction.
3. be applicable to various vacuum device or the sealing devices that big electric current electro-heat equipment is arranged, like klystron, magnetron etc.
Description of drawings
Fig. 1 is a sketch map of the present invention.
Fig. 2 is that A among Fig. 1 is to view.
Fig. 3 is that B among Fig. 1 is to view.
Fig. 4 is that C among Fig. 1 is to view.
Wherein, the big electric current electro-heat equipment of 1-, 2-laterally cushion bending assembly, 3-and vertically cushion bending assembly, 4-sliding contact bar, 5-stop screw, 6-sliding contact seat, 6.1-endoporus, 7-and laterally cushion bending assembly, 8-lead-in wire, 9-power supply.
Embodiment
Below in conjunction with accompanying drawing the present invention is further explained:
With reference to Fig. 1, an end of big electric current electro-heat equipment 1 through horizontal buffering bending assembly 2, vertically cushion bending assembly 3, bar cellular type sliding contact device links to each other with an end of power supply 9.The other end of big electric current electro-heat equipment 1 links to each other with the other end of power supply 9 through horizontal buffering bending assembly 7, lead-in wire 8.Said bar cellular type sliding contact device is made up of sliding contact bar 4 and sliding contact seat 6; Said sliding contact bar 4 one ends are connected with vertical buffering bending assembly 3; The other end inserts in the endoporus 6.1 of sliding contact seat 6, and said sliding contact seat 6 links to each other with an end of power supply 9 as another lead-in wire simultaneously.Also be provided with the stop screw 5 of end nipple on the said sliding contact seat 6 from endoporus 6.1 walls.
Wherein, the size gap between preferred diameter of bore φ B and the sliding contact bar φ A is φ B-φ A=0.8～1mm; Sliding contact bar 4 inserts the depth dimensions L2 of endoporus 6.1; Should guarantee that when maximum swelling sliding contact bar 4 does not push up the lowermost end of endoporus 6.1; And (during no power) can not skid off from endoporus 6.1 again in when work (during energising) or when not working; Preferred L2 is (under the no swelling state; The end of sliding contact bar 4 is apart from the length in endoporus 6.1 apertures) length dimension be 5～6 times of diameter of bore φ A, the end of sliding contact bar 4 apart from the length dimension of the degree of depth L 3 (under the no swelling state, the end of sliding contact bar 4 is apart from the length of endoporus 6.1 bottom surfaces) of endoporus 6.1 bottom surfaces be endoporus 6.1 diameter phi A 1-1.5 doubly.The size of stop screw 5 can confirm according to the size of sliding contact bar 4, its size preferably sliding contact bar 4 diameters 0.8-1.2 doubly.Selecting the diameter of sliding contact bar for use such as us is φ A=φ 3.2mm, and the stop screw of selection is MA=M3.Stop screw 5 diameters are too little will to lose spacing effect, and sliding contact bar 4 can horizontally slip in endoporus 6.1.The end of said stop screw 5 also should keep certain clearance with sliding contact bar 4; Guarantee that sliding contact bar 4 contact with endoporus 6.1 walls and makes big electric current electro-heat equipment 1 and power supply 9 formation loops, when electric current electro-heat equipment 1 passes through big electric current greatly when big electric current electro-heat equipment 1 no power; Sliding contact bar 4 is under the effect of stop screw 5; Can remain the contact condition with endoporus 6.1 hole walls, can slide along the hole wall of endoporus 6.1 again, this gap preferably be controlled at 0.25～0.5 tooth apart between.And can further confirm the position dimension L1 of stop screw on endoporus 6.1 according to stop screw 5 sizes, preferred L1 (stop screw 5 axial lines are apart from the length in endoporus aperture) is 1.5～1.7MA.
Operation principle: big electric current electro-heat equipment 1 (during no power) each parts when not working are in turn connected to form electric loop.When big electric current electro-heat equipment 1 is worked (during energising); Laterally cushion bending assembly 7 release portion lateral stresses; Laterally buffering bending assembly 2 and vertical buffering bending assembly 3 also transmit horizontal and vertical stress respectively to sliding contact bar 4; Sliding contact bar 4 is slided along endoporus 6.1 hole walls of sliding contact seat 6, thereby this stress is discharged through sliding action, and guarantee the unimpeded of electric loop.
With reference to Fig. 2,3,4; Said buffering bending assembly is meant the vertical or horizontal bending of electric conducting material (like tantalum, tantalum-niobium alloy, nickel etc.) is formed the components and parts with at least one bending part; When stress conducts to this moment,, the existence of bending part discharges because can realizing the transmission of stress and part.Because big electric current electro-heat equipment working temperature is high, for example in instance the working temperature of big electric current electro-heat equipment about 1400 ℃.Therefore, gentle to wash off curved assembly 7 corresponding temperature also higher for buffering bending assembly 2.It should select exotic material for use, like tantalum, tantalum-niobium alloy, also can select the nickel material.So buffering bending assembly material can not be too thick, to reduce thermal resistance, avoids big electric current electro-heat equipment thermal loss.But it needs certain intensity again, thereby buffering bending assembly material thickness is between 0.2～0.4mm.Its material width maximum power big or small according to big electric current electro-heat equipment and that allow is confirmed, generally in 5～10mm scope, selects.
Claims (7)
1. the big electric current sliding contact device in vacuum device or the sealing device; Comprise big electric current electro-heat equipment; Its two ends are connected with the two ends of power supply through lead-in wire; It is characterized in that an end of said big electric current electro-heat equipment is connected with an end of power supply through the sliding contact device of buffering bending assembly, conduct lead-in wire.
2. the big electric current sliding contact device in vacuum device as claimed in claim 1 or the sealing device; It is characterized in that; Said sliding contact device is a bar cellular type sliding contact device; Comprise the sliding contact bar that an end is connected with buffering bending assembly, and as the sliding contact seat that goes between and be connected with an end of power supply, sliding contact with it in the endoporus of said sliding contact bar insertion sliding contact seat.
3. the big electric current sliding contact device in vacuum device as claimed in claim 1 or the sealing device is characterized in that, the locating part that the end that can make the sliding contact bar and inner hole wall remain contact condition is housed in the said endoporus.
4. the big electric current sliding contact device in vacuum device as claimed in claim 1 or the sealing device is characterized in that, the other end of said big electric current electro-heat equipment also is connected with the other end of power supply through buffering bending assembly, lead-in wire.
5. like the big electric current sliding contact device in each described vacuum device or the sealing device among the claim 1-4; It is characterized in that; The buffering bending assembly that said and big electric current electro-heat equipment one end is connected comprises the horizontal buffering bending assembly that connects successively and vertically cushions the bending assembly that said vertical buffering bending assembly is connected with the sliding contact device.
6. the big electric current sliding contact device in vacuum device as claimed in claim 4 or the sealing device is characterized in that, the buffering bending assembly that the said and big electric current electro-heat equipment other end is connected is for laterally cushioning the bending assembly.
7. like the big electric current sliding contact device in each described vacuum device or the sealing device among the claim 1-4, it is characterized in that said buffering bending component thickness is 0.2～0.4mm, width is 5～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110238973.5A CN102324364B (en) | 2011-08-19 | 2011-08-19 | High-current sliding contact device in vacuum apparatus or sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110238973.5A CN102324364B (en) | 2011-08-19 | 2011-08-19 | High-current sliding contact device in vacuum apparatus or sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102324364A true CN102324364A (en) | 2012-01-18 |
| CN102324364B CN102324364B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110238973.5A Active CN102324364B (en) | 2011-08-19 | 2011-08-19 | High-current sliding contact device in vacuum apparatus or sealing device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441490A (en) * | 2002-02-28 | 2003-09-10 | 三洋电机株式会社 | Semiconductor device and its producing method |
| CN101114736A (en) * | 2006-07-28 | 2008-01-30 | 星电株式会社 | Connecting device |
| CN101950869A (en) * | 2010-08-31 | 2011-01-19 | 上海航天科工电器研究院有限公司 | Heavy-current power connector |
| CN202183354U (en) * | 2011-08-19 | 2012-04-04 | 湖北汉光科技股份有限公司 | High current sliding contact device in vacuum device or sealing device |
-
2011
- 2011-08-19 CN CN201110238973.5A patent/CN102324364B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1441490A (en) * | 2002-02-28 | 2003-09-10 | 三洋电机株式会社 | Semiconductor device and its producing method |
| CN101114736A (en) * | 2006-07-28 | 2008-01-30 | 星电株式会社 | Connecting device |
| CN101950869A (en) * | 2010-08-31 | 2011-01-19 | 上海航天科工电器研究院有限公司 | Heavy-current power connector |
| CN202183354U (en) * | 2011-08-19 | 2012-04-04 | 湖北汉光科技股份有限公司 | High current sliding contact device in vacuum device or sealing device |
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| Publication number | Publication date |
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| CN102324364B (en) | 2014-04-30 |
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