CN210325631U - Arc extinguish chamber electrode structure with arch bridge flexible support - Google Patents
Arc extinguish chamber electrode structure with arch bridge flexible support Download PDFInfo
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- CN210325631U CN210325631U CN201921772185.2U CN201921772185U CN210325631U CN 210325631 U CN210325631 U CN 210325631U CN 201921772185 U CN201921772185 U CN 201921772185U CN 210325631 U CN210325631 U CN 210325631U
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Abstract
The arc extinguish chamber electrode structure with the arch bridge flexible support comprises a static guide rod, a static contact seat, a static contact support, a static contact, a dynamic guide rod, a dynamic contact seat, a dynamic contact support and a dynamic contact; the fixed contact seat and the moving contact seat are internally provided with arch bridge flexible supports, each arch bridge flexible support comprises a small outer diameter support and a large outer diameter support, the end face of each small outer diameter support is supported on the bottom surface of the inner cavity of the corresponding fixed contact seat or moving contact seat, the end face of each large outer diameter support is supported on the corresponding fixed contact support or moving contact support, and an arch bridge recessed structure is arranged on the tangent plane of each large outer diameter support and the corresponding fixed contact support or moving contact support. In the switching-on process of the vacuum switch, the movable contact and the fixed contact are in switching-on collision, the switching-on impact kinetic energy is deformed in the stress process due to the arch bridge principle of the flexible support of the arch bridge, the mechanical strength of the electrode is reduced, the residual energy which can not be completely absorbed by the compression spring of the contact on the operating mechanism is absorbed, the reduction of switching-on bounce is effectively inhibited, and the requirement of performance parameters of the vacuum circuit breaker is met.
Description
Technical Field
The utility model belongs to the technical field of the vacuum interrupter structure, concretely relates to explosion chamber electrode structure with arch bridge flexible support.
Background
The closing bounce is an important parameter of the mechanical characteristic of the vacuum circuit breaker, when the vacuum circuit breaker is closed, the closing impact kinetic energy is large, the moving contact and the static contact generate inelastic collision, the moving contact and the static contact are pushed away by a reaction force after the moving contact and the static contact are contacted, and the phenomenon that the moving contact and the static contact are pushed away is easy to occur. The main reason for generating bounce is that when the moving contact and the fixed contact are in closing collision, the kinetic energy of closing impact cannot be completely absorbed by the arc extinguish chamber, and the residual energy causes the moving contact to rebound. The main hazards of bounce in a certain range are that the abrasion of contacts of the arc extinguish chamber is accelerated, the pressure of moving and static contacts is reduced due to mechanical fatigue, the contact resistance of a loop is increased, and the contacts are subjected to fusion welding, so that the electric service life of the arc extinguish chamber is influenced. The bounce is reduced through improving the apron structure and reducing explosion chamber motion part quality in the current explosion chamber design, has certain effect, nevertheless all does not reach expectation effect. There is therefore a need for improvements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem: the utility model provides an explosion chamber electrode structure with arch bridge flexible support, the utility model discloses arch bridge flexible support that has deformability at explosion chamber electrode internal design one, the explosion chamber is at vacuum switch combined floodgate in-process, sound contact combined floodgate collision, combined floodgate impact kinetic energy is because of the arch bridge principle of arch bridge flexible support, take place to warp at the atress in-process, make the mechanical strength of electrode reduce, thereby with the absorption of the complete absorptive residual energy of contact compression spring on its operating mechanism, restrain effectively and reduce combined floodgate spring, satisfy the standard requirement of vacuum circuit breaker performance parameter.
The utility model adopts the technical proposal that: the arc extinguish chamber electrode structure with the arch bridge flexible support comprises a static guide rod, a static contact seat, a static contact support, a static contact, a dynamic guide rod, a dynamic contact seat, a dynamic contact support and a dynamic contact; the fixed contact base is fixed on the end part of a fixed guide rod, the fixed contact support is fixed on the opening part of the fixed contact base, the fixed contact support is provided with a fixed contact, the movable contact base is fixed on the end part of a movable guide rod, the movable contact support is fixed on the opening part of a movable contact base, the movable contact support is provided with a movable contact, the fixed contact and the movable contact are arranged oppositely, arch bridge flexible supports are arranged inside the fixed contact base and the movable contact base respectively and comprise a small outer diameter support and a large outer diameter support, the end surface of the small outer diameter support is supported on the bottom surface of the inner cavity of the corresponding fixed contact base or movable contact base, the end surface of the large outer diameter support is supported on the corresponding fixed contact support or movable contact support, and an arch bridge recessed structure is arranged on the.
In a preferable mode of the above technical scheme, the small outer diameter support center is provided with a small outer diameter center hole, the large outer diameter support center is provided with a large outer diameter center hole, and the inner diameter of the large outer diameter center hole is adjustable from 0 to the inner diameter of the small outer diameter center hole.
In a preferable mode of the above technical scheme, the arch bridge flexible support is made of a high-temperature elastic material or a non-high-temperature elastic material.
In a preferable mode of the technical scheme, the arch bridge flexible support is made of stainless steel materials.
The utility model has the advantages compared with the prior art:
1. in the scheme, a supporting part in an arc extinguish chamber electrode is designed into an arch bridge flexible support with deformation performance, the arch bridge flexible support is matched with a contact and a contact seat of the arc extinguish chamber, the contact support forms a flexible electrode for reducing the mechanical strength of the electrode, after the movable and fixed contacts of the arc extinguish chamber are in closing collision, the movable and fixed contacts are in closing collision, the closing impact kinetic energy is stressed on the end surface of the small outer diameter support according to the arch bridge principle of the arch bridge flexible support and is transmitted to a large outer diameter support surface, the end surface arch bridge of the large outer diameter support has a buffering effect and deforms in the stress process to enable the support to generate plastic deformation, the deformation comprises the elastic deformation of materials and the plastic deformation of a structure, the mechanical strength of the electrode is reduced, so that the residual energy which cannot be completely absorbed by a contact compression spring on an operating mechanism is absorbed, the reactive force generated by the movable and fixed contacts is eliminated, the switching-on bounce of the arc extinguish chamber assembled on the mechanism is reduced, the abrasion of a contact of the arc extinguish chamber is reduced, the electric service life of the arc extinguish chamber is prolonged, and the standard requirement of performance parameters of the vacuum circuit breaker is met.
Drawings
FIG. 1 is a front view of the structure of the present invention;
fig. 2 is a front view of the flexible supporting structure of the middle arch bridge of the present invention;
FIG. 3 is a top view of FIG. 2;
fig. 4 is a front view of the flexible supporting structure of the middle arch bridge of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one.. said element does not exclude the presence of other like elements in the process, method, article or apparatus that comprises the element.
Referring to fig. 1-4, in one embodiment of the present invention,
an arc extinguish chamber electrode structure with an arch bridge flexible support, as shown in figure 1, comprises a static guide rod 1, a static contact seat 2, a static contact support 3, a static contact 4, a movable guide rod 5, a movable contact seat 6, a movable contact support 7 and a movable contact 8; the movable contact device is characterized in that the fixed contact seat 2 is fixed at the end part of the fixed guide rod 1, the fixed contact support 3 is fixed at the opening part of the fixed contact seat 2, the fixed contact support 3 is provided with a fixed contact 4, the movable contact seat 6 is fixed at the end part of the movable guide rod 5, the movable contact support 7 is fixed at the opening part of the movable contact seat 6, the movable contact support 7 is provided with a movable contact 8, and the fixed contact 4 and the movable contact 8 are oppositely arranged.
The fixed contact seat 2 and the movable contact seat 6 are both internally provided with arch bridge flexible supports 9, as shown in fig. 2, the arch bridge flexible supports 9 include a small outer diameter support 901 and a large outer diameter support 902, and the small outer diameter support 901 and the large outer diameter support 902 may be an integrally formed part or a split structure composed of two parts. The end face of the small outer diameter support 901 is supported on the bottom surface of the inner cavity of the corresponding static contact base 2 or moving contact base 6, the end face of the large outer diameter support 902 is supported on the corresponding static contact support 3 or moving contact support 7, and an arch bridge recessed structure 903 is arranged on the tangent plane of the large outer diameter support 902 and the static contact support 3 or moving contact support 7.
Preferably, a small outer diameter center hole 904 is arranged in the center of the small outer diameter support 901, a large outer diameter center hole 905 is arranged in the center of the large outer diameter support 902, the inner diameter of the large outer diameter center hole 905 is adjustable from 0 to the inner diameter of the small outer diameter center hole 904, as shown in fig. 2, the inner diameter of the large outer diameter center hole 905 is equal to the inner diameter of the small outer diameter center hole 904, and as shown in fig. 4, the inner diameter of the large outer diameter center hole 905 is 0. The arch bridge flexible support 9 is made of high-temperature elastic material or non-high-temperature elastic material. The arch bridge flexible support 9 is made of stainless steel materials.
The utility model discloses the contact seat of well arched bridge flexible support 9 on the one hand avoids the sound contact produces extrusion deformation because of the collision when the mechanism closes a floodgate, cause contact seat and groove, on the other hand is at the vacuum switch switching-on in-process, the static contact 4 and the 8 contacts production reaction forces of moving contact of explosion chamber, arched bridge flexible support 9 plays the transmission effect of a power, static contact 4 and moving contact 8 transmit reaction force for respective contact seat through arched bridge flexible support 9, the retransmission is for corresponding movable guide arm 5 and static guide arm 1. In the process, if the contact seat, the contact support, the movable guide rod 5 and the static guide rod 1 corresponding to the static contact 4 and the movable contact 8 cannot deform to a certain extent, the reaction force cannot be absorbed, and then acts between the static contact 4 and the movable contact 8 to generate bounce. And the utility model discloses the effect of the arched bridge structure that well arched bridge flexible support 9 was equipped with, lie in the explosion chamber static contact 4 and the 8 floodgate collisions backs of moving contact, the combined floodgate strikes kinetic energy and acts on the arched bridge flexible support 9 of sound electrode, take place to warp at the atress in-process, make arched bridge flexible support 9 produce plastic deformation, can the absorbed energy among the deformation process, eliminate the reaction force that static contact 4 and moving contact 8 produced, make the contact of static contact 4 and moving contact 8 become elastic contact by the rigidity, arched bridge flexible support 9 transmits the energy to the contact seat that corresponds, the reaction force weak of corresponding movable guide 5 and static guide 1 is given in the retransmission, thereby reduce the combined floodgate spring of explosion chamber assembly in the mechanism, satisfy the standard requirement of vacuum circuit breaker performance parameter.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. The arc extinguish chamber electrode structure with the arch bridge flexible support comprises a static guide rod (1), a static contact base (2), a static contact support (3), a static contact (4), a movable guide rod (5), a movable contact base (6), a movable contact support (7) and a movable contact (8); the utility model discloses a movable contact device, including stationary contact seat (2), stationary contact support (6), movable contact seat (7), stationary guide pole (1), stationary contact seat (2), stationary contact support (3), movable contact seat (6), movable contact seat (7), movable contact seat (8), stationary contact seat (4) and movable contact (8) set up its characterized in that: the arch bridge flexible support (9) is arranged inside the static contact seat (2) and the moving contact seat (6), the arch bridge flexible support (9) comprises a small outer diameter support (901) and a large outer diameter support (902), the end face of the small outer diameter support (901) is supported on the bottom surface of an inner cavity of the corresponding static contact seat (2) or moving contact seat (6), the end face of the large outer diameter support (902) is supported on the corresponding static contact support (3) or moving contact support (7), and an arch bridge recessed structure (903) is arranged on the tangent surface of the large outer diameter support (902) and the static contact support (3) or moving contact support (7).
2. The arc chute electrode structure with arch bridge flexible support of claim 1, characterized in that: the center of the small outer diameter support (901) is provided with a small outer diameter center hole (904), the center of the large outer diameter support (902) is provided with a large outer diameter center hole (905), and the inner diameter of the large outer diameter center hole (905) is adjustable from 0 to the inner diameter of the small outer diameter center hole (904).
3. The arc chute electrode structure with arch bridge flexible support of claim 1, characterized in that: the arch bridge flexible support (9) is made of high-temperature elastic materials or non-high-temperature elastic materials.
4. The arc chute electrode structure with arch bridge flexible support of claim 3, characterized in that: the arch bridge flexible support (9) is made of stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921772185.2U CN210325631U (en) | 2019-10-22 | 2019-10-22 | Arc extinguish chamber electrode structure with arch bridge flexible support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921772185.2U CN210325631U (en) | 2019-10-22 | 2019-10-22 | Arc extinguish chamber electrode structure with arch bridge flexible support |
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| CN210325631U true CN210325631U (en) | 2020-04-14 |
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| CN201921772185.2U Active CN210325631U (en) | 2019-10-22 | 2019-10-22 | Arc extinguish chamber electrode structure with arch bridge flexible support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713015A (en) * | 2020-12-14 | 2021-04-27 | 河南平高电气股份有限公司 | Contact fastening connection structure and high-voltage switch equipment |
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2019
- 2019-10-22 CN CN201921772185.2U patent/CN210325631U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112713015A (en) * | 2020-12-14 | 2021-04-27 | 河南平高电气股份有限公司 | Contact fastening connection structure and high-voltage switch equipment |
| CN112713015B (en) * | 2020-12-14 | 2024-04-05 | 河南平高电气股份有限公司 | Contact fastening connection structure and high-voltage switch equipment |
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