CN216084657U - Insulating pillar assembly of moisture-proof circuit breaker - Google Patents
Insulating pillar assembly of moisture-proof circuit breaker Download PDFInfo
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- CN216084657U CN216084657U CN202121976079.3U CN202121976079U CN216084657U CN 216084657 U CN216084657 U CN 216084657U CN 202121976079 U CN202121976079 U CN 202121976079U CN 216084657 U CN216084657 U CN 216084657U
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- circuit breaker
- corrugated pipe
- sleeve
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Abstract
An insulating support assembly of a moisture-proof circuit breaker comprises an insulating sleeve, a sliding positioning sleeve is arranged in the upper part of the insulating sleeve, an arc extinguish chamber is arranged in the sliding positioning sleeve in a sliding manner, an insulating pull rod is movably arranged in the middle of the insulating sleeve, a connecting rod is arranged between the insulating pull rod and the arc extinguish chamber, a metal corrugated pipe sealing structure for sealing the insulating sleeve is arranged at the lower part of the insulating sleeve, the metal corrugated pipe sealing structure comprises a spring fixing seat, a corrugated pipe and a flange seat, one end of the corrugated pipe is fixedly connected with the spring fixing seat, the other end of the corrugated pipe is fixedly connected with the flange seat, a channel between the insulating pull rod, the insulating support and a mechanism action main shaft is adopted for plugging type design, the insulating support and the mechanism chamber are relatively subjected to effective spatial isolation and moisture insulation, so that moisture in the mechanism chamber can not enter the insulating support, and the operation safety of the support type vacuum circuit breaker is improved, the insulating capability of the insulating pull rod and the insulating support is ensured, the service life of the circuit breaker is prolonged, and the stability of the equipment is improved.
Description
Technical Field
The utility model discloses an insulating support column assembly of a moisture-proof circuit breaker, and belongs to the field of circuit breakers.
Background
The protection level of the strut type vacuum circuit breaker ZW32 structure which is used in large quantity at present can not effectively stop rainwater from permeating into the interior of a circuit breaker mechanism chamber through a bottom plate of a product mechanism box in the transportation or storage process, condensation moisture generated by temperature difference change day and night can not be effectively discharged out of the circuit breaker, the moisture only passes through an inner wall of an insulating strut which is connected with the mechanism chamber and is conducted, the outer surface of the insulating strut upwards climbs, the insulating capacity of the pull rod and the insulating strut is reduced accordingly, partial discharge of the insulating pull rod and the inner wall of the insulating strut is caused, the circuit breaker insulating pull rod or the insulating strut is finally caused to be in breakdown after long-term operation, and even large-area power failure accidents occur.
In conclusion, no matter water vapor enters or is condensed, creepage along the surface is caused by moisture entering the inner wall of the insulating support and the surface of the insulating pull rod of the ZW32 type circuit breaker which is accumulated day by day in long-term operation, and finally, the insulation breakdown of the circuit breaker is caused, so that the accident is further expanded to be a short-circuit fault.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide an insulating support column assembly of a moisture-proof circuit breaker, so as to solve the problems that the insulating pull rod or the insulating support column of the circuit breaker is easy to be punctured by the existing moisture, and even a large-area power failure accident occurs.
In order to achieve the purpose, the utility model is realized by the following technical scheme: an insulating support assembly of a moisture-proof circuit breaker structurally comprises an insulating sleeve, wherein a sliding positioning sleeve is arranged in the upper portion of the insulating sleeve, an arc extinguish chamber is arranged in the sliding positioning sleeve in a sliding mode, an insulating pull rod is movably arranged in the middle of the insulating sleeve, a connecting rod is arranged between the insulating pull rod and the arc extinguish chamber, a metal corrugated pipe sealing structure for sealing the insulating sleeve is arranged on the lower portion of the insulating sleeve, the metal corrugated pipe sealing structure comprises a spring fixing seat, a corrugated pipe and a flange seat, one end of the corrugated pipe is fixedly connected with the spring fixing seat, the other end of the corrugated pipe is fixedly connected with the flange seat, the spring fixing seat is fixedly sleeved on the lower portion of the insulating pull rod, the lower portion of the insulating pull rod extends to form a pulling portion, the pulling portion penetrates through the corrugated pipe, the tail end of the corrugated pipe penetrates out of the flange seat, a pressure relief channel is symmetrically arranged on the left portion and the right portion of the flange seat, still include two rubber stoppers, two rubber stoppers are joined in marriage corresponding pressure release passageway respectively and are restricted sealedly.
Further, the mechanism main shaft is connected with the tail end of the pulling part.
Furthermore, the flange seat is connected with the lower end face of the insulating sleeve in a bolt fixing mode.
Furthermore, the corrugated pipe is a metal elastic element, compensates and buffers the axial displacement of the insulating pull rod in the switching-on and switching-off process of the circuit breaker, and has the performances of high temperature resistance, strong heat conductivity, high pressure resistance, strong bending fatigue strength and corrosion resistance.
Furthermore, the spring fixing seat, the corrugated pipe and the flange seat are all made of stainless steel 304, and the thickness of the corrugated pipe is 0.19 +/-0.05 mm.
Further, the upper limit of the pressure endured by the corrugated pipe is 10 Mpa.
Further, the pressure borne by the insulating sleeve is 0.7 MPa.
Further, the pressure relief channel can realize the pressure relief pressure of 0.15-0.2 Mpa.
Furthermore, an o-shaped ethylene propylene diene monomer sealing ring is adopted for sealing between the flange seat and the circuit breaker.
The utility model has the beneficial effects that: the channel between the insulating pull rod, the insulating support and the mechanism action spindle is adopted to carry out plugging type design, so that the insulating support and the mechanism chamber are relatively subjected to effective isolation and moisture insulation in space, the moisture in the mechanism chamber is prevented from entering the insulating support, the operation safety of the support type vacuum circuit breaker is improved, the insulating capability of the insulating pull rod and the insulating support is ensured, and the service life of the circuit breaker and the stability of equipment are prolonged.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural view of an insulating post assembly of a moisture-proof circuit breaker according to the present invention;
fig. 2 is a schematic cross-sectional view illustrating an insulating post assembly of a moisture-proof circuit breaker according to the present invention;
fig. 3 is a schematic cross-sectional detailed structure diagram of an insulating column assembly of a moisture-proof circuit breaker according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.
Referring to fig. 1, 2 and 3, the present invention provides a technical solution of an insulating pillar assembly of a moisture-proof circuit breaker: the structure of the metal corrugated pipe sealing structure comprises an insulating sleeve 1, a sliding positioning sleeve 2 is arranged in the upper portion of the insulating sleeve 1, an arc extinguish chamber 3 is arranged in the sliding positioning sleeve 2 in a sliding mode, an insulating pull rod 4 is movably arranged in the middle of the insulating sleeve 1, a connecting rod 5 is arranged between the insulating pull rod 4 and the arc extinguish chamber 3, a metal corrugated pipe sealing structure 6 for sealing the metal corrugated pipe sealing structure is arranged on the lower portion of the insulating sleeve 1, the metal corrugated pipe sealing structure 6 comprises a spring fixing seat 601, a corrugated pipe 602 and a flange seat 603, one end of the corrugated pipe 602 is fixedly connected with the spring fixing seat 601, the other end of the corrugated pipe 602 is fixedly connected with the flange seat 603, the spring fixing seat 601 is fixedly sleeved on the lower portion of the insulating pull rod 4, the lower portion of the insulating pull rod 4 extends to form a pulling portion, the pulling portion penetrates through the corrugated pipe 602, the tail end of the corrugated pipe is movably penetrated out of the flange seat 603, a pressure relief channel 604 is symmetrically arranged on the left portion and the right portion of the flange seat 603, also comprises two rubber plugs which are respectively matched with the corresponding pressure relief channels 604 for limiting and sealing, a mechanism main shaft 7, the main shaft 7 of the mechanism is connected with the tail end of the pulling part, the flange seat 603 is connected with the lower end surface of the insulating sleeve 1 in a bolt fixing mode, the corrugated pipe 602 is a metal elastic element, compensates and buffers the axial displacement of the insulating pull rod 4 in the switching-on and switching-off process of the circuit breaker, and has the performances of high temperature resistance, strong heat conductivity, high pressure resistance, strong bending fatigue strength and corrosion resistance, the spring fixing seat 601, the corrugated pipe 602 and the flange seat 603 are all made of stainless steel 304, the thickness of the corrugated pipe 602 is 0.19 +/-0.05 mm, the upper limit of the pressure endured by the corrugated pipe 602 is 10Mpa, the pressure borne by the insulating sleeve 1 is 0.7Mpa, the pressure relief channel 604 can realize the pressure relief pressure of 0.15-0.2 Mpa, and an o-shaped ethylene propylene diene monomer sealing ring is adopted for sealing between the flange seat 603 and the circuit breaker.
Example (b):
when the breaker performs opening and closing actions, the mechanism spindle 7 drives the insulating pull rod 4 and the arc extinguish chamber 3 to perform axial displacement through the pulling part, the insulating pull rod 4 generates acting force on the corrugated pipe 602 through the spring fixing seat 601 in the movement process, so that the corrugated pipe 602 deforms, the end face specific pressure is generated on the sealing end face by the elastic force of the corrugated pipe 602 and the gas fluid pressure during the opening and closing actions, the sealing effect is realized, the moisture in the breaker mechanism chamber is blocked, and the moisture is effectively prevented from invading the outer surfaces of the insulating strut inner arm and the insulating pull rod 4;
when the circuit breaker normally operates, the pressure relief channel 604 is blocked by a rubber plug, so that the insulation strut part of the circuit breaker meets the IP68 protection level, when the insulation strut of any phase of the circuit breaker breaks down and generates excessive pressure inside the circuit breaker, the rubber plugs of the two pressure relief channels 604 on the lower flange seat 603 of the insulating strut will be pushed open by the internal gas with a certain pressure, so that the air pressure in the insulating strut is released from the pressure relief channels 604, thereby avoiding explosion accidents of the insulating strut, meanwhile, because the designed bellows 602 can bear pressure far greater than that of the rubber stopper, when the internal component of any phase of the insulating strut of the circuit breaker has a fault, the internal gas of the insulating strut of the fault phase can not directly enter the mechanism chamber of the circuit breaker, the generated heat can be effectively dissipated through the bellows 602 without affecting the mechanical transmission components of the circuit breaker and the other two-phase, non-failing, insulating support and its arc chute 3.
Once a certain phase of the supporting column has a fault, when the fault phase of the circuit breaker needs to be maintained, only the insulating supporting column of the fault phase and the arc extinguish chamber 3 thereof need to be replaced, and the other two phases do not need to be involved, so that the maintenance cost and the maintenance efficiency of the circuit breaker are greatly reduced.
While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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 (7)
1. An insulating pillar assembly of a moisture-proof circuit breaker, characterized in that: the structure of the metal corrugated pipe sealing structure comprises an insulating sleeve (1), a sliding positioning sleeve (2) is arranged in the upper portion of the insulating sleeve (1), an arc extinguish chamber (3) is arranged in the sliding positioning sleeve (2), an insulating pull rod (4) is arranged in the middle of the insulating sleeve (1) in an inner moving mode, a connecting rod (5) is arranged between the insulating pull rod (4) and the arc extinguish chamber (3), a metal corrugated pipe sealing structure (6) for sealing the insulating sleeve (1) is arranged on the lower portion of the insulating sleeve (1), the metal corrugated pipe sealing structure (6) comprises a spring fixing seat (601), a corrugated pipe (602) and a flange seat (603), one end of the corrugated pipe (602) is fixedly connected with the spring fixing seat (601), the other end of the corrugated pipe is fixedly connected with the flange seat (603), the spring fixing seat (601) is fixedly sleeved on the lower portion of the insulating pull rod (4), and the lower portion of the insulating pull rod (4) extends to form a pulling portion, pulling portion runs through in bellows (602) to end activity sees through flange seat (603), two symmetries are equipped with a pressure release passageway (604) about flange seat (603), still include two rubber stoppers, and two rubber stoppers join in respectively corresponding pressure release passageway (604) and restrict sealedly.
2. The insulating pillar assembly of a moisture proof type circuit breaker according to claim 1, wherein: the mechanism is characterized by further comprising a mechanism main shaft (7), wherein the mechanism main shaft (7) is connected with the tail end of the pulling part.
3. The insulating pillar assembly of a moisture proof type circuit breaker according to claim 1, wherein: the flange seat (603) is connected with the lower end face of the insulating sleeve (1) in a bolt fixing mode.
4. The insulating pillar assembly of a moisture proof type circuit breaker according to claim 1, wherein: the bellows (602) is a metal elastic element.
5. The insulating pillar assembly of a moisture proof type circuit breaker according to claim 1, wherein: spring fixing seat (601), bellows (602), flange seat (603) all adopt stainless steel 304 material, bellows (602) thickness is 0.19 ± 0.05 mm.
6. The insulating pillar assembly of a moisture proof type circuit breaker according to claim 1, wherein: the upper pressure limit that the bellows (602) can withstand is 10 Mpa.
7. The insulating pillar assembly of a moisture proof type circuit breaker according to claim 1, wherein: the insulating sleeve (1) bears the air pressure of 0.7 Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121976079.3U CN216084657U (en) | 2021-08-20 | 2021-08-20 | Insulating pillar assembly of moisture-proof circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121976079.3U CN216084657U (en) | 2021-08-20 | 2021-08-20 | Insulating pillar assembly of moisture-proof circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216084657U true CN216084657U (en) | 2022-03-18 |
Family
ID=80671226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121976079.3U Active CN216084657U (en) | 2021-08-20 | 2021-08-20 | Insulating pillar assembly of moisture-proof circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216084657U (en) |
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2021
- 2021-08-20 CN CN202121976079.3U patent/CN216084657U/en active Active
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