CN220106412U - Low-voltage circuit breaker assembled static contact system device - Google Patents
Low-voltage circuit breaker assembled static contact system device Download PDFInfo
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- CN220106412U CN220106412U CN202321693623.2U CN202321693623U CN220106412U CN 220106412 U CN220106412 U CN 220106412U CN 202321693623 U CN202321693623 U CN 202321693623U CN 220106412 U CN220106412 U CN 220106412U
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- circuit breaker
- voltage circuit
- contact
- static contact
- arc
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- 230000003068 static effect Effects 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 21
- 229910052709 silver Inorganic materials 0.000 description 21
- 239000004332 silver Substances 0.000 description 21
- 230000000694 effects Effects 0.000 description 8
- 230000005284 excitation Effects 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000002679 ablation Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a low-voltage circuit breaker assembled static contact system device in the technical field of low-voltage circuit breakers, which comprises a low-voltage circuit breaker, wherein the low-voltage circuit breaker comprises a mounting base, the top of the mounting base is provided with a protective shell, the middle part of an inner cavity of the mounting base is provided with a moving contact, one side of the mounting base, which is close to the moving contact, is connected with a conductive circuit, one side of the mounting base, which is far away from the conductive circuit, is also provided with an arc extinguishing mechanism, a circuit breaking operating mechanism is arranged in the protective shell, one side of the protective shell, which is close to the circuit breaking operating mechanism, is also provided with a circuit breaking triggering mechanism.
Description
Technical Field
The utility model relates to the technical field of low-voltage circuit breakers, in particular to an assembled static contact system device of a low-voltage circuit breaker.
Background
In low voltage power distribution systems, circuit breakers are the core circuit protection components. The advantages and disadvantages of the circuit breaker protection function directly affect the operational reliability and stability of the entire power distribution system. The core performance of the circuit breaker is a protection function, under the limit short circuit condition, huge current is passed through the circuit breaker, the capacity of breaking the current is the final embodiment of the overall performance of the circuit breaker, when huge energy from a transformer is converged to the circuit breaker, the breaking speed is higher, the current limiting capacity is stronger, the arc extinguishing effect is better, the breaking capacity is naturally higher, and the design of a repulsive contact is particularly important in the design of the circuit breaker.
At present, the arc angle of the repulsive force type fixed contact in the low-voltage circuit breaker is integrally formed through the contact, and the fixed contact is made of pure copper because the fixed contact needs to bear current, so that the integrally formed arc angle is made of pure copper, copper is used as the arc angle to generate copper foam under the condition of arc high-temperature ablation, and product breaking is not facilitated; the existing fixed contact is riveted with an arc angle, so that the arc angle material can be a magnetic conduction material with good effect, the cost is high, the production process is increased, and the arc angle is not suitable for being in direct contact with silver points (if the arc angle is designed into a contact structure, the welded silver points are deformed or fall off during riveting); as the arc angles of the two structural designs have no excitation function, and the arc isolating parts of the fixed contact cannot be assembled with the fixed contact, the fixed contact needs to be assembled when the whole product is assembled. To this end, we propose a low-voltage circuit breaker assembled static contact system device to solve the above mentioned problems.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.
Therefore, the utility model aims to provide the low-voltage circuit breaker assembled static contact system device which can solve the problem that static silver points are continuously ablated during limit breaking.
In order to solve the technical problems, the utility model provides an assembled static contact system device of a low-voltage circuit breaker, which adopts the following technical scheme: the low-voltage circuit breaker comprises a mounting base, wherein a protective shell is arranged at the top of the mounting base;
the middle part of the inner cavity of the mounting base is provided with a moving contact, one side of the mounting base, which is close to the moving contact, is connected with a conductive circuit, and one side of the mounting base, which is far away from the conductive circuit, is also provided with an arc extinguishing mechanism;
the inside of the protective shell is provided with a circuit breaking operating mechanism, and one side of the protective shell, which is close to the circuit breaking operating mechanism, is also provided with a circuit breaking triggering mechanism.
By adopting the technical scheme, the assembled static contact in the scheme has simple structural design, can be disassembled, assembled, connected, maintained and replaced according to the use condition, and is not fixed by means of riveting, welding and other connection modes in the whole installation process; the integrated arc angle in the scheme combines the magnetic conduction arc angle and the magnetic gathering sheet into a whole in the conventional scheme, and the U-shaped structure surrounds the silver points, so that the functions of converging magnetic fields and strengthening magnetic blowing can be achieved, and the oblique angle type arc striking part enables current to smoothly transition from the silver points to the top of the arc angle;
when the insulating cover is integrally covered on the connecting frame of the contact seat, only the silver point and the arc angle part are exposed, so that the arc root can only be dissociated at the silver point and the arc angle part, other conductive parts can be effectively prevented from being burnt, and meanwhile, the integral arc angle is clamped and fixed at the middle part of the assembled fixed contact, the structural integration of the fixed contact of the low-voltage circuit breaker can be realized, the effects of fusion excitation, arc striking, isolation function and simplified process can be achieved, and the problem that the fixed silver point is continuously ablated when the limit breaking is solved.
Optionally, the arc extinguishing mechanism comprises an assembled static contact, and an arc extinguishing chamber is installed at the top of the assembled static contact.
Through adopting above-mentioned technical scheme, this scheme is through the explosion chamber at assembled static contact top additional installation for control and the arc extinguishing of low voltage circuit breaker can protect equipment and personnel's safety, can also maintain electric power system's normal operating.
Optionally, the explosion chamber includes spacing support, two sets of be connected with the arc extinguishing bars piece group between the spacing support.
Through adopting above-mentioned technical scheme, this scheme is through installing the arc extinguishing bars piece group additional between two sets of limit support for the pilot arc of explosion chamber, diffusion arc energy, arc extinction and the elimination electric arc, realizes controlling and the arc extinguishing effect to the electric arc.
Optionally, the assembled static contact includes the contact seat, the insulating boot is installed to one side of contact seat, still be provided with integral type arc angle between insulating boot and the contact seat.
By adopting the technical scheme, the assembled static contact in the scheme is formed by assembling the contact seat, the insulating cover and the integrated arc angle, can play the roles of fusing excitation, arc striking, isolation function and simplified process, and can also solve the problem of continuous ablation of the static silver point during limit breaking.
Optionally, the contact seat includes a contact fixing plate, and a connection frame is installed at one side of the contact fixing plate.
Through adopting above-mentioned technical scheme, this scheme is through the connecting frame of installing additional in contact fixed plate one side for insulating cover and integral type arc angle's support connection.
Optionally, a plurality of groups of fixed orifices have been seted up at the top of contact fixed plate, the one end middle part of connecting frame is provided with the mounting panel.
Through adopting above-mentioned technical scheme, this scheme can connect the one end middle part at the connection frame with integral type arc angle joint through the mounting panel at connection frame one end middle part additional.
Optionally, the insulating cover includes covering the cover plate, covering cover plate and connecting frame structure assorted, be joint cooperation between covering cover plate and the connecting frame, the one end middle part that covers the cover plate is provided with the joint board, the joint groove has still been seted up at the middle part that covers the cover plate, joint groove and integral type arc angle structure assorted, be joint cooperation between integral type arc angle and contact seat, the insulating cover.
By adopting the technical scheme, because the cover plate is in clamping fit with the connecting frame, and the clamping groove is matched with the integral arc angle structure, the integral arc angle can be clamped and connected between the contact seat and the insulating cover.
Optionally, the integrated arc angle comprises a magnetic conduction arc angle, and two sides of the magnetic conduction arc angle are respectively provided with a magnetic gathering sheet.
Through adopting above-mentioned technical scheme, the integrated arc angle in this scheme will magnetic conduction arc angle and the structural design that gathers magnetic sheet and unite two into one in the conventional scheme to around the silver point with U type structure, can play the effect of gathering magnetic field and strengthening the magnetic blow, the striking arc position of oblique angle makes the current pass through to arc angle top by silver point in order.
In summary, the present utility model includes at least one of the following beneficial effects:
1. the assembled static contact in the scheme has simple structural design, can be disassembled, connected, maintained and replaced according to the use condition, and is fixed in the whole installation process without depending on connection modes such as riveting, welding and the like; the integrated arc angle in the scheme combines the magnetic conduction arc angle and the magnetic gathering sheet into a whole in the conventional scheme, and the U-shaped structure surrounds the silver points, so that the functions of converging magnetic fields and strengthening magnetic blowing can be achieved, and the oblique angle type arc striking part enables current to smoothly transition from the silver points to the top of the arc angle;
2. when the insulating cover is integrally covered on the connecting frame of the contact seat, only the silver point and the arc angle part are exposed, so that the arc root can only be dissociated at the silver point and the arc angle part, other conductive parts can be effectively prevented from being burnt, and meanwhile, the integral arc angle is clamped and fixed at the middle part of the assembled fixed contact, the structural integration of the fixed contact of the low-voltage circuit breaker can be realized, the effects of fusion excitation, arc striking, isolation function and simplified process can be achieved, and the problem that the fixed silver point is continuously ablated when the limit breaking is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view of the interior of the protective housing of the present utility model;
FIG. 3 is an internal cross-sectional view of the mounting base of the present utility model;
fig. 4 is a schematic structural view of an arc extinguishing mechanism according to the present utility model;
FIG. 5 is a schematic view of an assembled stationary contact structure of the present utility model;
FIG. 6 is an assembled view of the assembled stationary contact of the present utility model;
FIG. 7 is a schematic view of a contact base structure according to the present utility model;
FIG. 8 is a schematic view of an insulating cover according to the present utility model;
fig. 9 is a schematic view of an integrated arc angle structure according to the present utility model.
Reference numerals illustrate: 100. a low voltage circuit breaker; 101. a mounting base; 101a, a moving contact; 101b, conductive lines; 102. a protective housing; 102a, a circuit breaking operating mechanism; 102b, a circuit breaking trigger mechanism; 300. an arc extinguishing mechanism; 301. a fixed contact of the assembly type; 301a, a contact base; 301a-1, contact fixing plates; 301a-1a, fixing holes; 301a-2, a connection frame; 301a-2a, a bracket plate; 301b, an insulating cover; 301b-1, a cover plate; 301b-2, a clamping plate; 301c, integral arc angle; 301c-1, magnetic arc angle; 301c-2, magnetic flakes; 302. an arc extinguishing chamber; 302a, a limit bracket; 302b, arc extinguishing grid plate group.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-9.
First embodiment, referring to fig. 1-4, the utility model discloses a low voltage circuit breaker assembled static contact system device,
the low-voltage circuit breaker 100 comprises a low-voltage circuit breaker 100, wherein the low-voltage circuit breaker 100 comprises a mounting base 101, and a protective shell 102 is arranged at the top of the mounting base 101;
the middle part of the inner cavity of the installation base 101 is provided with a movable contact 101a, one side of the installation base 101 close to the movable contact 101a is connected with a conductive circuit 101b, and one side of the installation base 101 far away from the conductive circuit 101b is also provided with an arc extinguishing mechanism 300;
the protection shell 102 is internally provided with a circuit breaking operating mechanism 102a, and one side of the protection shell 102 close to the circuit breaking operating mechanism 102a is also provided with a circuit breaking triggering mechanism 102b.
The arc extinguishing mechanism 300 comprises an assembled static contact 301, an arc extinguishing chamber 302 is arranged at the top of the assembled static contact 301, and the arc extinguishing chamber 302 additionally arranged at the top of the assembled static contact 301 is used for controlling and extinguishing the low-voltage circuit breaker 100, so that the safety of equipment and personnel can be protected, and the normal operation of a power system can be maintained.
In order to solve the problem of continuous ablation of the static silver point during limit breaking in this embodiment, referring to fig. 4-7, based on the same concept as the first embodiment, the low voltage circuit breaker assembled static contact system device further includes:
the arc-extinguishing chamber 302 comprises a limiting bracket 302a, an arc-extinguishing grid sheet group 302b is connected between the two groups of limiting brackets 302a, and the arc-extinguishing grid sheet group 302b additionally arranged between the two groups of limiting brackets 302a is used for guiding an arc of the arc-extinguishing chamber 302, diffusing arc energy, extinguishing and eliminating the arc to realize the control and the arc-extinguishing effect of the arc.
The assembled static contact 301 comprises a contact seat 301a, an insulating cover 301b is arranged on one side of the contact seat 301a, an integrated arc angle 301c is further arranged between the insulating cover 301b and the contact seat 301a, the assembled static contact 301 in the scheme is formed by assembling the contact seat 301a, the insulating cover 301b and the integrated arc angle 301c, the effects of fusion excitation, arc striking and isolation function and process simplification can be achieved, and the problem that a static silver point is continuously ablated during limit breaking can be solved.
The contact base 301a includes a contact fixing plate 301a-1, a connection frame 301a-2 is mounted on one side of the contact fixing plate 301a-1, and the connection frame 301a-2 is mounted on one side of the contact fixing plate 301a-1 for supporting connection between the insulating cover 301b and the integral arc angle 301 c.
Embodiment III referring to FIGS. 7-9, in order to solve the problem of continuous ablation of the static silver point during limit breaking in this embodiment, based on the same concept as in the first embodiment, the low voltage breaker assembled static contact system apparatus further includes:
a plurality of groups of fixing holes 301a-1a are formed in the top of the contact fixing plate 301a-1, a support plate 301a-2a is arranged in the middle of one end of the connecting frame 301a-2, and the integral arc angle 301c can be connected in a clamping mode in the middle of one end of the connecting frame 301a-2 through the support plate 301a-2a additionally arranged in the middle of one end of the connecting frame 301 a-2.
The insulating cover 301b includes a cover plate 301b-1, the cover plate 301b-1 is structurally matched with the connecting frame 301a-2, the cover plate 301b-1 is in clamping fit with the connecting frame 301a-2, a clamping plate 301b-2 is arranged in the middle of one end of the cover plate 301b-1, a clamping groove 301b-3 is further formed in the middle of the cover plate 301b-1, the clamping groove 301b-3 is structurally matched with the integral arc angle 301c, the integral arc angle 301c is in clamping fit with the contact base 301a and the insulating cover 301b, and the clamping groove 301b-3 is matched with the integral arc angle 301c in structure because the cover plate 301b-1 is in clamping fit with the connecting frame 301a-2, so that the integral arc angle 301c can be connected between the contact base 301a and the insulating cover 301b in a clamping mode.
The integrated arc angle 301c comprises a magnetic conduction arc angle 301c-1, wherein the magnetic gathering pieces 301c-2 are respectively arranged on two sides of the magnetic conduction arc angle 301c-1, the integrated arc angle 301c in the scheme combines the magnetic conduction arc angle 301c-1 and the magnetic gathering pieces 301c-2 into a whole in the conventional scheme, a U-shaped structure surrounds the periphery of a silver point, the functions of converging a magnetic field and enhancing magnetic blowing can be achieved, and an arc striking part with an oblique angle enables current to be smoothly transited to the top of the arc angle from the silver point.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. Low voltage circuit breaker assembled static contact system device, including low voltage circuit breaker (100), its characterized in that: the low-voltage circuit breaker (100) comprises a mounting base (101), wherein a protective shell (102) is arranged at the top of the mounting base (101);
a movable contact (101 a) is arranged in the middle of an inner cavity of the installation base (101), one side, close to the movable contact (101 a), of the installation base (101) is connected with a conductive circuit (101 b), and one side, far away from the conductive circuit (101 b), of the installation base (101) is also provided with an arc extinguishing mechanism (300);
the circuit breaking operation mechanism (102 a) is arranged in the protective shell (102), and a circuit breaking trigger mechanism (102 b) is further arranged on one side, close to the circuit breaking operation mechanism (102 a), of the protective shell (102).
2. The low voltage circuit breaker assembled static contact system apparatus of claim 1, wherein: the arc extinguishing mechanism (300) comprises an assembled static contact (301), and an arc extinguishing chamber (302) is arranged at the top of the assembled static contact (301).
3. The low voltage circuit breaker assembly type static contact system device according to claim 2, wherein: the arc extinguishing chamber (302) comprises a limiting bracket (302 a), and an arc extinguishing grid sheet group (302 b) is connected between the two limiting brackets (302 a).
4. A low voltage circuit breaker assembly static contact system apparatus as claimed in claim 3 wherein: the assembled static contact (301) comprises a contact seat (301 a), an insulating cover (301 b) is arranged on one side of the contact seat (301 a), and an integrated arc angle (301 c) is further arranged between the insulating cover (301 b) and the contact seat (301 a).
5. The low voltage circuit breaker assembled static contact system apparatus of claim 4, wherein: the contact base (301 a) comprises a contact fixing plate (301 a-1), and a connecting frame (301 a-2) is installed on one side of the contact fixing plate (301 a-1).
6. The low voltage circuit breaker assembled static contact system apparatus of claim 5, wherein: a plurality of groups of fixing holes (301 a-1 a) are formed in the top of the contact fixing plate (301 a-1), and a support plate (301 a-2 a) is arranged in the middle of one end of the connecting frame (301 a-2).
7. The low voltage circuit breaker assembled static contact system apparatus of claim 6, wherein: the insulating cover (301 b) comprises a cover plate (301 b-1), the cover plate (301 b-1) is matched with the connecting frame (301 a-2) in structure, the cover plate (301 b-1) is in clamping fit with the connecting frame (301 a-2), the clamping plate (301 b-2) is arranged at the middle part of one end of the cover plate (301 b-1), the clamping groove (301 b-3) is further formed in the middle of the cover plate (301 b-1), the clamping groove (301 b-3) is matched with the integral arc angle (301 c) in structure, and the integral arc angle (301 c) is in clamping fit with the contact seat (301 a) and the insulating cover (301 b).
8. The low voltage circuit breaker assembled static contact system apparatus of claim 7, wherein: the integrated arc angle (301 c) comprises a magnetic conduction arc angle (301 c-1), and magnetic gathering pieces (301 c-2) are respectively arranged on two sides of the magnetic conduction arc angle (301 c-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321693623.2U CN220106412U (en) | 2023-06-30 | 2023-06-30 | Low-voltage circuit breaker assembled static contact system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321693623.2U CN220106412U (en) | 2023-06-30 | 2023-06-30 | Low-voltage circuit breaker assembled static contact system device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220106412U true CN220106412U (en) | 2023-11-28 |
Family
ID=88872348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321693623.2U Active CN220106412U (en) | 2023-06-30 | 2023-06-30 | Low-voltage circuit breaker assembled static contact system device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220106412U (en) |
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2023
- 2023-06-30 CN CN202321693623.2U patent/CN220106412U/en active Active
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