CN201421798Y - Contact terminal structure of low-voltage vacuum arc-extinguishing chamber - Google Patents
Contact terminal structure of low-voltage vacuum arc-extinguishing chamber Download PDFInfo
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- CN201421798Y CN201421798Y CN2009201199445U CN200920119944U CN201421798Y CN 201421798 Y CN201421798 Y CN 201421798Y CN 2009201199445 U CN2009201199445 U CN 2009201199445U CN 200920119944 U CN200920119944 U CN 200920119944U CN 201421798 Y CN201421798 Y CN 201421798Y
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- conducting rod
- vacuum arc
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Abstract
The utility model discloses a contact terminal structure of a low-voltage vacuum arc-extinguishing chamber. The contact terminal structure comprises a conducting rod, one end of the conducting rod isconnected with a cup-shaped longitudinal magnetic contact terminal seat, a contact terminal plate is connected at the other end of the contact terminal seat, a supporting seat for supporting the contact terminal plate is arranged in the cavity of the contact terminal seat, and the conducting rod and the supporting seat are an integral structure. In the prior art, threads can only be formed at therod section of the conducting rod, while in the utility model, the conducting rod and the supporting seat are integrally formed, the threads can extend to the supporting seat section, the length of the conducting rod and the volume of the contact terminal structure can be reduced at the same time the depth of thread is guaranteed, thereby being suitable for the miniaturization requirement of vacuum arc-extinguishing chambers.
Description
Technical field
The utility model relates to a kind of contactor, relates in particular to a kind of structure of contact terminal of low-voltage vacuum arc control device.
Background technology
Over year, the design theory of China's vacuum interrupter, manufacturing process, quality level have all had qualitative leap surplus in the of 40.Rough division can think that the development of domestic arc control device experienced for five generations.
Homemade first generation vacuum interrupter, with rated voltage 12kV, φ 145mm glass insulation shell, electrode structure are that the horizontal magnetic of archimedean spiral groove, use CuBi are alloy contact, connecting-disconnecting function reaches 20kA, and the ZKBD1250/10-20 type vacuum interrupter of rated current 1250A is representative; Second generation vacuum interrupter is exactly a 3AF series vacuum interrupter of introducing Siemens, be characterized in that shielding cylinder exposes, ceramic insulation shell, electrode structure be the horizontal magnetic of cup-shaped, use CuCr50 alloy ring-type contact, connecting-disconnecting function reaches 31.5kA, rated current reaches 2500A, after the exploitation rated current can reach 3150A, connecting-disconnecting function can reach 40kA; Developed third generation vacuum interrupter on the basis of imported technology digesting and assimilating, be characterized in that shielding cylinder is built-in, φ 88～125mm ceramic insulation shell, electrode structure be the vertical magnetic of cup-shaped, CuCr50 contact material, connecting-disconnecting function reaches 40kA, rated current can reach 3150A, the arc control device of the vertical magnetic field of some coil types electrode have also been developed during this, mainly improved connecting-disconnecting function, but still based on the vertical magnetic of cup-shaped; With the one-step seal-exhaust technology be representative the 4th generation vacuum interrupter total quality be greatly improved, this moment, a large amount of 12kV, 24kV, 40.5kV were developed in the integrated application of various mature technologies, the vacuum interrupter of low pressure 0.38kV～various parameters of 1.14kV is supply the market in batches, and product has covered whole middle pressure field; Miniaturization, have the vacuum interrupter of external insulation protection can be described as the 5th generation product.
Vacuum interrupter since coming out, always constantly to miniaturization, high reliability, low-cost aspect development, structure of contact terminal to the transverse magnetic field structure, develops into the longitudinal magnetic field structure from simple disk structure.At present, cup-shaped longitudinal field contact structure is one of most widely used structure.
The low-voltage vacuum arc control device that existing low voltage circuit is used, usually form by the shell of tubular and the dynamic and static structure of contact terminal that is installed in the shell, one end of shell is the ceramic end made from pottery, the other end is the metal end made from metal, shell is used for vacuum seal and insulation, makes and forms the vacuum insulation environment in the shell.
Because dynamic and static contact is a pair of symmetrical structure, is designated hereinafter simply as contact and introduces its structure:
Existing structure of contact terminal, as shown in Figure 1, comprise conducting rod 100, an end of conducting rod 100 links to each other with the vertical magnetic contact base 200 of cup-shaped, contact base 200 front ends are connected with contact dish 300, have been provided with the supporting seat 400 of supports contacts dish 300 effects in contact base 200 die cavities.
Moving, static contact structure is with being installed in the shell of mode sealed insulation of butt joint, moving contact structure is installed in the ceramic end of shell, static contact structure is installed in the metal end of shell, moving, the conducting rod 100 of static contact structure stretches out the shell two ends respectively, moving, the bar portion of the conducting rod 100 of static contact structure is provided with internal thread separately, moving contact structure links to each other with the drive system of vacuum circuit-breaker by being threaded, fixed contact links to each other with the vacuum circuit-breaker circuit by being threaded, moving contact can move with respect to fixed contact under the effect of drive system, thereby finishes switch motion.
Because the internal thread on the conducting rod has certain degree of depth requirement, the length to dynamic and static conducting rod has certain requirement again like this, is unsuitable for the requirement of product miniaturization.
The utility model content
The utility model provides a kind of compact conformation at deficiency of the prior art, and volume is little, the structure of contact terminal of the low-voltage vacuum arc control device that take up room little.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of structure of contact terminal of low-voltage vacuum arc control device, comprise conducting rod, an end of conducting rod links to each other with the vertical magnetic contact base of cup-shaped, and the contact base other end is connected with the contact dish, be provided with the supporting seat of supports contacts dish in the contact base die cavity, described conducting rod and supporting seat are overall structure.In the prior art, screw thread can only be arranged on the bar portion of conducting rod, in the utility model, conducting rod and supporting seat are one-body molded, screw thread can extend to the supporting seat part, when guaranteeing the depth of thread, can shorten the length of conducting rod, reduce the volume of structure of contact terminal, be suitable for the requirement of vacuum interrupter miniaturization.
Further, offer on the wall of cup of described contact base and revolve the arc groove, revolving the arc groove is 90 ° along the angle that wall of cup rotates.
Further, the described number that revolves the arc groove is 6, evenly distributes along the wall of cup of contact base.
Further, describedly revolve the arc groove and contact base rim of a cup plane angulation is 17 °.Reduce the height of contact base, further reduce the volume of structure of contact terminal.
Further, also be provided with magnetism gathering rings in the described contact base, the upper and lower end face of described magnetism gathering rings respectively with contact dish lower surface, contact base bottom surface Xiang Ding.Make vacuum interrupter magnetic field intensity height, drop-out current is big, and break performance is stable.
Further, described magnetism gathering rings cross section is an annular, and material is an electrical pure iron.
Further, described contact dish is the disk shape, and has been disposed radially groove.
Further, described groove number is 6, evenly distributes on the contact dish.
Beneficial effect: the utility model compared with prior art has following beneficial effect:
(1) in the prior art, screw thread can only be arranged on the bar portion of conducting rod, in the utility model, conducting rod and supporting seat are one-body molded, screw thread can extend to the supporting seat part, when guaranteeing the depth of thread, can shorten the length of conducting rod, reduce the volume of structure of contact terminal, be suitable for the requirement of vacuum interrupter miniaturization.
(2) in the prior art, conducting rod and contact base are two independent structures, the two adopts axis hole interlocking, or structure such as end face connection connects, thereby, can produce certain contact resistance in the junction, in the utility model, conducting rod and contact base adopt integrated structure, and contact resistance is little, rated current level height has improved the overall performance of vacuum interrupter.
(3) in the utility model, revolve arc groove and the contact base rim of a cup plane angulation that are provided with on the contact base wall of cup change 17 ° into by 27 ° of prior art, reduce the height of dynamic/static contact seat, further reduce the volume of structure of contact terminal.
(4) in the utility model, between contact base and contact dish, increased magnetism gathering rings, played increasing magnetic field, made vacuum interrupter magnetic field intensity height, drop-out current is big, and break performance is stable.
(5) the utility model volume is little, and is in light weight, thereby reduced cost, significantly improved economic benefit.
Description of drawings
Fig. 1 is the prior art structural representation.
Fig. 2 is the utility model structural representation.
Fig. 3 is the structural representation of contact base of the present utility model.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the vertical view of magnetism gathering rings of the present utility model.
Fig. 6 is the vertical view of contact dish of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail,, is designated hereinafter simply as structure of contact terminal and introduces its structure because dynamic and static contact is a pair of symmetrical structure:
Referring to accompanying drawing 2～6, a kind of structure of contact terminal of low-voltage vacuum arc control device, comprise conducting rod 1, one end of conducting rod 1 links to each other with the vertical magnetic contact base 2 of cup-shaped, contact base 2 other ends are connected with contact dish 3, be provided with the supporting seat 4 of supports contacts dish 3 in contact base 2 die cavities, described conducting rod 1 is an overall structure with supporting seat 4.In the prior art, screw thread can only be arranged on the bar portion of conducting rod 1, in the utility model, conducting rod 1 is one-body molded with supporting seat 4, screw thread can extend to the supporting seat part, when guaranteeing the depth of thread, can shorten the length of conducting rod 1, reduce the volume of structure of contact terminal, be suitable for the requirement of vacuum interrupter miniaturization.As a specific embodiment of the present utility model, further, offer on the wall of cup of described contact base 2 and revolve arc groove 20, revolving arc groove 20 is 90 ° along the angle a that wall of cup rotates.
Further, the described number that revolves arc groove 20 is 6, evenly distributes along the wall of cup of contact base 2.
On the wall of cup of contact base 2, offer and revolve arc groove 20, can strengthen the effect and the ability of vacuum interrupter arc extinguishing.
Further, the described arc groove 20 that revolves is 17 ° with contact base 2 rim of a cup plane angulation β, reduces the height of contact base 2, further reduces the volume of structure of contact terminal.
Further, also be provided with magnetism gathering rings 5 in the described contact base 2, described magnetism gathering rings 5 upper and lower end faces offset with contact dish lower surface, contact base bottom surface respectively.Make vacuum interrupter magnetic field intensity height, drop-out current is big, and break performance is stable.
Further, described magnetism gathering rings 5 cross sections are annular, and material is an electrical pure iron.
Further, described contact dish 3 is the disk shape, and has been disposed radially groove 30.
Further, described groove 30 numbers are 6, evenly distribute on contact dish 3.
Operation principle: moving, static contact structure is with being installed in the shell of mode sealed insulation of butt joint, moving contact structure is installed in the ceramic end of shell, static contact structure is installed in the metal end of shell, moving, the conducting rod 1 of static contact structure stretches out the shell two ends respectively, moving, the bar portion of the conducting rod 1 of static contact structure is provided with internal thread separately, moving contact structure links to each other with the drive system of vacuum circuit-breaker by being threaded, static contact structure links to each other with the vacuum circuit-breaker circuit by being threaded, moving contact structure can move with respect to static contact structure under the effect of drive system, thereby finishes switch motion.During the operation of low-voltage vacuum arc control device, moving contact structure moves between the two positions, first position is two positions that contact dish 3 is in contact with one another, be called closing position again, in this position, electric current flows into from the moving conductive rod of the moving contact structure of vacuum interrupter, through movable contact headstock, movable contact cephalic disc, the stationary contact cephalic disc of static contact structure, stationary contact headstock flow out from static conductive rod, and perhaps the static conductive rod from static contact structure flows into, through stationary contact headstock, stationary contact cephalic disc, the movable contact cephalic disc of moving contact, movable contact headstock flow out from moving conductive rod, connect circuit; Second position is that two contact dishes 3 are separated from each other the position of necessarily opening distance, is called the separating brake position again, and in this position, vacuum interrupter cut-offs the electric current that flows through two structure of contact terminals, and circuit disconnects.
Structure of contact terminal of the present utility model is applied to the low-voltage vacuum arc control device, can reduce the volume of structure of contact terminal, be suitable for the requirement of vacuum interrupter miniaturization, the utility model volume is little, and is in light weight, thereby reduced cost, significantly improved economic benefit, the utility model magnetic field intensity height, drop-out current is big, and break performance is stable.
Claims (8)
1, a kind of structure of contact terminal of low-voltage vacuum arc control device, comprise conducting rod (1), one end of conducting rod (1) links to each other with the vertical magnetic contact base (2) of cup-shaped, contact base (2) other end is connected with contact dish (3), be provided with the supporting seat (4) of supports contacts dish (3) in contact base (2) die cavity, it is characterized in that described conducting rod (1) is an overall structure with supporting seat (4).
2, the structure of contact terminal of low-voltage vacuum arc control device according to claim 1 is characterized in that, offers on the wall of cup of described contact base (2) and revolves arc groove (20), and revolving arc groove (20) is 90 ° along the angle that wall of cup rotates.
3, the structure of contact terminal of low-voltage vacuum arc control device according to claim 2 is characterized in that, the described number that revolves arc groove (20) is 6, and evenly distributes along the wall of cup of contact base (2).
4, the structure of contact terminal of low-voltage vacuum arc control device according to claim 2 is characterized in that, the described arc groove (20) that revolves is 17 ° with contact base (2) rim of a cup plane angulation.
5, the structure of contact terminal of low-voltage vacuum arc control device according to claim 1 is characterized in that, also is provided with magnetism gathering rings (5) in the described contact base (2), the upper and lower end face of described magnetism gathering rings (5) respectively with contact dish lower surface, contact base bottom surface Xiang Ding.
6, the structure of contact terminal of low-voltage vacuum arc control device according to claim 5 is characterized in that, described magnetism gathering rings (5) cross section is an annular, and material is an electrical pure iron.
7, the structure of contact terminal of low-voltage vacuum arc control device according to claim 1 is characterized in that, described contact dish (3) is the disk shape, and has been disposed radially groove (30).
8, the structure of contact terminal of low-voltage vacuum arc control device according to claim 7 is characterized in that, described groove (30) number is 6, goes up evenly at contact dish (3) to distribute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201199445U CN201421798Y (en) | 2009-05-15 | 2009-05-15 | Contact terminal structure of low-voltage vacuum arc-extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201199445U CN201421798Y (en) | 2009-05-15 | 2009-05-15 | Contact terminal structure of low-voltage vacuum arc-extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421798Y true CN201421798Y (en) | 2010-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201199445U Expired - Fee Related CN201421798Y (en) | 2009-05-15 | 2009-05-15 | Contact terminal structure of low-voltage vacuum arc-extinguishing chamber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701067A (en) * | 2013-12-04 | 2015-06-10 | 沈阳工业大学 | Coil embedded-type longitudinal-magnetic vacuum arc extinguishing chamber contact |
| CN110120320A (en) * | 2019-06-06 | 2019-08-13 | 四川大学 | A kind of novel longitudinal magnetic contact system with embedded magnetism gathering rings and reversed contact cup |
| CN116453902A (en) * | 2023-06-13 | 2023-07-18 | 成都旭光电子股份有限公司 | Novel vacuum interrupter contact structure |
-
2009
- 2009-05-15 CN CN2009201199445U patent/CN201421798Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701067A (en) * | 2013-12-04 | 2015-06-10 | 沈阳工业大学 | Coil embedded-type longitudinal-magnetic vacuum arc extinguishing chamber contact |
| CN110120320A (en) * | 2019-06-06 | 2019-08-13 | 四川大学 | A kind of novel longitudinal magnetic contact system with embedded magnetism gathering rings and reversed contact cup |
| CN110120320B (en) * | 2019-06-06 | 2021-06-04 | 四川大学 | Novel longitudinal magnetic contact system with embedded magnetic gathering ring and reverse contact cup |
| CN116453902A (en) * | 2023-06-13 | 2023-07-18 | 成都旭光电子股份有限公司 | Novel vacuum interrupter contact structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100310 Termination date: 20170515 |