CN202230939U - Novel vacuum switch pipe - Google Patents
Novel vacuum switch pipe Download PDFInfo
- Publication number
- CN202230939U CN202230939U CN2011202805295U CN201120280529U CN202230939U CN 202230939 U CN202230939 U CN 202230939U CN 2011202805295 U CN2011202805295 U CN 2011202805295U CN 201120280529 U CN201120280529 U CN 201120280529U CN 202230939 U CN202230939 U CN 202230939U
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- CN
- China
- Prior art keywords
- end cover
- contact
- conducting rod
- movable
- vacuum switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model relates to a novel vacuum switch pipe which comprises an insulating casing (1), an upper end cover (2), a lower end cover (3), a movable conductor pole (4), and a fixed conductor pole (5), and is characterized in that a plurality of contact pieces (9) are arranged at the periphery of the fixed conductor pole; one end of each contact piece is compressed tightly on the fixed conductor pole; a movable contact moving upwards is contacted with the contact pieces; spring leaves (10) are arranged on the outer sides of all contact pieces; guard shields (11) are arranged at the periphery of the spring leaves; and the spring leaves are connected with the guard shields in a crimping manner. The movable contact and the contact pieces are in plug-in matching to realize connection and disconnection of circuit current, the vacuum switch is not needed to exert closing retention, so that the vacuum switch is simplified in structure, and the reliability of the vacuum switch is improved.
Description
Technical field
The utility model relates to a kind of vacuum switch tube structure technology.Belong to mesohigh electrical equipment technical field of vacuum switches.
Background technology
Vacuum switch is a kind of electric equipment that is used to control and protect electric power system; Its closure through two electrode contacts (hereinafter to be referred as contact) of control in the vacuum switch tube, separate the pass of realizing circuital current and close and break off, thereby reach the purpose of control electric power system.Vacuum switch tube is the core parts of vacuum switch, and it is through being sealed in the contact control in the vacuum tank, the device of extinguish arcs.
The structure of at present common vacuum switch tube is as shown in Figure 1, and the body of vacuum switch tube generally comprises insulation crust, be arranged on insulation crust two ends metal end, fixedly conducting rod, movable conducting rod, fixed contact and movable contact up and down.Said fixedly conducting rod is fixedly connected with fixed contact, and movable conducting rod is fixedly connected with movable contact, and movable contact can move up and down under the drive of movable conducting rod, with fixed contact contact or separate, to realize the conducting or the shutoff of switch.
Existing vacuum switch tube fixed contact and movable contact are plane dock structure.Reliable in order to contact, when being assembled to vacuum switch tube on the switch complete machine, must the contact spring be set in movable conducting rod one side.When vacuum switch closed a floodgate, operating mechanism must compress the contact spring, and vacuum switch tube movable end contact is reliably contacted with the stiff end contact.This sky switch of will looking for the truth must apply a confining force to the contact spring behind combined floodgate, thereby makes construction of switch more complicated, has reduced reliability.
In addition, plane dock structure of contact terminal has only a contact contact-making surface, and is a plurality of some contacts, thereby contact resistance is big.Through bigger fault current the time, cause contact melting welding easily, thereby cause switch failure.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of novel evacuated switching tube is provided, and simplifies construction of switch, improves the fail safe that switch uses.
The purpose of the utility model is achieved in that a kind of novel evacuated switching tube; It comprises insulation crust, upper end cover, bottom end cover, movable conducting rod and fixing conducting rod; Said upper end cover and bottom end cover lid place the insulation crust two ends; The bellows that said movable conducting rod passes said bottom end cover and links to each other with the bottom end cover inboard; Movable conducting rod end in said insulation crust is provided with movable contact, and said fixedly conducting rod passes said upper end cover and is tightly connected with upper end cover, is equipped with the bellows shield cover in the outer periphery of said bellows.
Outer periphery at said fixedly conducting rod is equipped with a plurality of contact blades, and the outside of said each contact blade is provided with spring leaf, is equipped with guard shield, said spring leaf and the crimping of guard shield elasticity in the outer periphery of said spring leaf.One end of said contact blade compresses on fixing conducting rod through spring leaf, and said movable conducting rod moves up under the effect of external force and reliably contacts with contact blade.
In said vacuum switch tube, be provided with upper end grading shield and bottom grading shield, said upper end grading shield is fixedly connected with bottom end cover with upper end cover respectively with the bottom grading shield.
Said vacuum switch tube also comprises fairlead and fairlead retainer ring, and said fairlead is inserted between said movable conducting rod and the bellows, and said fairlead retainer ring is arranged at the part that fairlead stretches out the said bottom end cover outside.
Said fixedly conducting rod and movable conducting rod adopt oxygen-free copper or pure copper material, and said spring leaf uses the metal material that can bear the high-temperature technology more than at least 600 ℃ to make.
Said contact blade and movable contact adopt combinations of materials such as fine copper, chromiumcopper, tungsten-copper alloy to use, and said movable contact and contact blade adopt the plug-in fit structure.
Compared with prior art, the beneficial effect of the utility model is:
A kind of vacuum switch tube of the utility model cooperates the pass of realizing circuital current to close and break off through movable contact with the plug-in of contact blade; Need not closing retention force be provided vacuum switch; Simplify vacuum switch structure; This in addition pluggable mode can increase effective contact area of contact, prevents under big current conditions, to cause contact melting welding, improves the reliability of vacuum switch.
Description of drawings
Fig. 1 is the vacuum switch tube structural representation of prior art.
Fig. 2 is the structural representation of the utility model.
Wherein:
Movable conducting rod 4
Fixedly conducting rod 5
Bellows 6
Bellows shield cover 8
Contact blade 9
Upper end grading shield 12
Fairlead 14
Embodiment
Referring to Fig. 2; The utility model relates to a kind of novel evacuated switching tube; It comprises insulation crust 1, upper end cover 2, bottom end cover 3, movable conducting rod 4 and fixing conducting rod 5; Said upper end cover 2 places insulation crust 1 two ends, said movable conducting rod 4 to pass said bottom end cover 3 with bottom end cover 3 lids and reaches and the bottom end cover 3 inboard bellowss 6 that link to each other, and movable conducting rod 4 ends in said insulation crust 1 are provided with movable contact 7; Said fixedly conducting rod 5 passes said upper end cover 2 and is tightly connected with upper end cover 2, is equipped with bellows shield cover 8 in the outer periphery of said bellows.
Outer periphery at said fixedly conducting rod 5 is equipped with a plurality of contact blades 9; Each contact blade 9 arranged outside has spring leaf 10; Said spring leaf 10 uses the metal material that can bear the high-temperature technology more than at least 600 ℃ to make, and is equipped with guard shield 11 in the outer periphery of said spring leaf 10.Through spring leaf 10 end of said contact blade 9 is pressed on fixedly on the conducting rod 5, said movable conducting rod 4 moves up under external force, and the periphery that makes movable contact 7 and contact blade 9 are inboard reliably to be contacted.In said vacuum switch tube, be provided with upper end grading shield 12 and bottom grading shield 13, said upper end grading shield 12 is fixedly connected with bottom end cover 3 with upper end cover 2 respectively with bottom grading shield 13.
Said vacuum switch tube also comprises fairlead 14 and fairlead retainer ring 15, and said fairlead 14 is inserted between said movable conducting rod 4 and the bellows 6, and said fairlead retainer ring 15 is arranged at the part that fairlead 14 stretches out said bottom end cover 3 outsides.
When the vacuum switch closed a floodgate, operating mechanism drove the movable contact of vacuum switch tube to fixedly conducting rod motion, and is inserted into contact blade group inside.In the insertion process, movable contact struts the contact blade group laterally.The spring leaf that is placed on the contact blade outside this moment is stressed, thereby contact blade is pressed on fixedly conducting rod and movable contact periphery respectively.The spring leaf inner through vacuum switch tube keeps fixed contact to contact with the reliable of movable contact, and the needing no vacuum switch is provided with extra closing retention force, has improved electrical contact performance, greatly reduces the possibility of contact melting welding.When vacuum switch separating brake; The vacuum switch operating mechanism drives movable contact away from fixing conducting rod; In the initial motion process; Contact blade and movable contact still keep enough pressure, and contact blade and movable contact flow through the slight solder joint that forms in the journey at logical live and receive the tangential pulling force, are easy to be separated.
In the present embodiment, vacuum switch tube need carry out high temperature brazing (welding temperature is generally between 600 ℃-900 ℃) in vacuum furnace.Therefore, in order to guarantee that through after the high temperature brazing technology, the spring leaf in the fixed contact assembly still can keep the mechanical mechanics property of needs, spring leaf must select for use the metal material that can bear above-mentioned technological temperature and not change performance to process.
In the present embodiment, in order to guarantee excellent conducting performance, fixedly conducting rod and movable conducting rod adopt the preferred oxygenless copper material of pure copper material.Contact blade and movable contact also must have anti-wear performance, and plug the metal fillings that must not rub out in the fixed contact component process at movable contact.Therefore, these two kinds of materials should have higher conductivity, also certain difference will be arranged on hardness.Combinations of materials such as contact blade and the preferred fine copper of movable contact material, chromiumcopper, tungsten-copper alloy use.
Claims (7)
1. novel evacuated switching tube; It comprises insulation crust (1), upper end cover (2), bottom end cover (3), movable conducting rod (4) and fixing conducting rod (5); Said upper end cover (2) and bottom end cover (3) are arranged at insulation crust (1) two ends respectively; The bellows (6) that said movable conducting rod (4) passes said bottom end cover (2) and links to each other with bottom end cover (3) inboard; Movable conducting rod (4) end in said insulation crust (1) is provided with movable contact (7), and said fixedly conducting rod (5) passes upper end cover (2) and is tightly connected with upper end cover (2), is equipped with bellows shield cover (8) in the outer periphery of said bellows (6); It is characterized in that being equipped with a plurality of contact blades (9) in the outer periphery of said fixedly conducting rod (5); One end of said contact blade (9) is pressed on fixedly on the conducting rod (5), and the said contact of living (7) contacts with contact blade (9) when moving up, and the outside of said each contact blade (9) is provided with spring leaf (10); Outer periphery at said spring leaf (10) is equipped with guard shield (11), said spring leaf (10) and guard shield (11) crimping.
2. novel evacuated switching tube according to claim 1 is characterized in that said movable contact (7) and contact blade (9) adopt the plug-in fit structure.
3. novel evacuated switching tube according to claim 1 is characterized in that said spring leaf (10) uses the metal material that can bear the high-temperature technology more than at least 600 ℃ to make.
4. according to claim 1 or 2 or 3 described novel evacuated switching tubes; It is characterized in that in said vacuum switch tube, being provided with upper end grading shield (12) and bottom grading shield (13), said upper end grading shield (12) is fixedly connected with bottom end cover (3) with upper end cover (2) respectively with bottom grading shield (13).
5. according to claim 1 or 2 or 3 described novel evacuated switching tubes; It is characterized in that said vacuum switch tube also comprises fairlead (14) and fairlead retainer ring (15); Said fairlead (14) is inserted between said movable conducting rod (4) and the bellows (6), and said fairlead retainer ring (15) is arranged at fairlead (14) and stretches out the Outboard Sections of bottom end cover (3).
6. according to claim 1 or 2 or 3 described novel evacuated switching tubes, it is characterized in that said movable conducting rod (4) and fixedly conducting rod (5) adopt oxygenless copper material or pure copper material.
7. according to claim 1 or 2 or 3 described novel evacuated switching tubes, it is characterized in that said contact blade (9) and movable contact (7) adopt fine copper or chromiumcopper or tungsten-copper alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202805295U CN202230939U (en) | 2011-08-04 | 2011-08-04 | Novel vacuum switch pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202805295U CN202230939U (en) | 2011-08-04 | 2011-08-04 | Novel vacuum switch pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230939U true CN202230939U (en) | 2012-05-23 |
Family
ID=46081517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202805295U Withdrawn - After Issue CN202230939U (en) | 2011-08-04 | 2011-08-04 | Novel vacuum switch pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202230939U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290284A (en) * | 2011-08-04 | 2011-12-21 | 江苏维爱斯电器有限公司 | Novel vacuum switch tube |
| CN104051183A (en) * | 2014-05-30 | 2014-09-17 | 国家电网公司 | Vacuum arc-extinguishing chamber with closing self-hold function |
| CN109036949A (en) * | 2018-08-31 | 2018-12-18 | 陕西宝光真空电器股份有限公司 | A kind of vacuum interrupter conducting rod and its processing method |
| WO2020207647A1 (en) * | 2019-04-11 | 2020-10-15 | Siemens Aktiengesellschaft | Switching device for an electrical apparatus, and electrical system |
-
2011
- 2011-08-04 CN CN2011202805295U patent/CN202230939U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290284A (en) * | 2011-08-04 | 2011-12-21 | 江苏维爱斯电器有限公司 | Novel vacuum switch tube |
| CN104051183A (en) * | 2014-05-30 | 2014-09-17 | 国家电网公司 | Vacuum arc-extinguishing chamber with closing self-hold function |
| CN109036949A (en) * | 2018-08-31 | 2018-12-18 | 陕西宝光真空电器股份有限公司 | A kind of vacuum interrupter conducting rod and its processing method |
| WO2020207647A1 (en) * | 2019-04-11 | 2020-10-15 | Siemens Aktiengesellschaft | Switching device for an electrical apparatus, and electrical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120523 Effective date of abandoning: 20130501 |
|
| RGAV | Abandon patent right to avoid regrant |