CN112769048B - Low-voltage circuit breaker locking structure of switch cabinet for nuclear power - Google Patents
Low-voltage circuit breaker locking structure of switch cabinet for nuclear power Download PDFInfo
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- CN112769048B CN112769048B CN201911071586.XA CN201911071586A CN112769048B CN 112769048 B CN112769048 B CN 112769048B CN 201911071586 A CN201911071586 A CN 201911071586A CN 112769048 B CN112769048 B CN 112769048B
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- Prior art keywords
- circuit breaker
- limiting
- nuclear power
- locking structure
- plate
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/54—Anti-seismic devices or installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a low-voltage circuit breaker locking structure of a switch cabinet for nuclear power, which comprises a cabinet body and a circuit breaker, wherein the bottom of the circuit breaker is fixed on the cabinet body, and the switch cabinet further comprises a top limiting beam; the top limiting beam is fixed on the cabinet body, and the lower part of the top limiting beam is clung to the top surface of the circuit breaker and is used for limiting the circuit breaker along the up-down direction; the top spacing roof beam is last to be fixed with the spacing seat of level, and the spacing seat of level is used for with two vertical lateral walls contacts of arranging in opposite directions of circuit breaker for carry out spacingly to the circuit breaker along the horizontal direction, thereby the circuit breaker is all limited by upper and lower direction and horizontal direction, and the top of consequently the circuit breaker is difficult for rocking in the cubical switchboard, has effectively improved the earthquake resistance of cubical switchboard.
Description
Technical Field
The invention belongs to the technical field of switch cabinets, and particularly relates to a locking structure of a low-voltage circuit breaker of a switch cabinet for nuclear power.
Background
In the third generation passive nuclear power plant, a nuclear power 1E-level switch cabinet is important equipment of the nuclear power plant and is used for executing functions such as reactor shutdown and the like, and the earthquake resistance of the nuclear power 1E-level switch cabinet is directly related to safe operation of the nuclear power plant.
In the existing nuclear power 1E-level switch cabinet, the bottom of a circuit breaker is usually fixed in the nuclear power 1E-level switch cabinet through bolts, and the gravity center of the nuclear power switch cabinet is high due to the fact that the installation position of the circuit breaker is high and the weight of the circuit breaker is high, so that the upper portion of the nuclear power 1E-level switch cabinet is easy to shake, the earthquake resistance is weak, and safe operation of a nuclear power station is not facilitated.
Disclosure of Invention
The invention aims to provide a locking structure of a low-voltage circuit breaker of a switch cabinet for nuclear power, which is used for solving the technical problems that the upper part of the switch cabinet is easy to shake and has weak earthquake resistance in the prior art.
The switch cabinet adopts the following technical scheme:
the low-voltage circuit breaker locking structure of the switch cabinet for nuclear power comprises a cabinet body and a circuit breaker, wherein the bottom of the circuit breaker is fixed on the cabinet body, and the switch cabinet further comprises a top limiting beam;
the top limiting beam is fixed on the cabinet body, and the lower part of the top limiting beam is clung to the top surface of the circuit breaker and is used for limiting the circuit breaker along the up-down direction;
the top limiting beam is fixedly provided with a horizontal limiting seat, and the horizontal limiting seat is used for contacting with two vertical side walls of the circuit breaker, which are arranged opposite to each other, and limiting the circuit breaker along the horizontal direction.
The beneficial effects are that: according to the low-voltage circuit breaker locking structure of the nuclear power switch cabinet, the top limiting beam is arranged in the switch cabinet, the lower part of the top limiting beam is tightly attached to the top surface of the circuit breaker, the circuit breaker is limited in the up-down direction, so that the circuit breaker cannot shake in the up-down direction, the horizontal limiting seat is fixedly arranged on the top limiting beam and can be contacted with the vertical side wall of the circuit breaker which is oppositely arranged, the circuit breaker is limited in the horizontal direction, the circuit breaker cannot shake in the horizontal direction, and therefore the circuit breaker is limited in the up-down direction and the horizontal direction, the upper part of the circuit breaker is not easy to shake in the switch cabinet, and the earthquake resistance of the switch cabinet is effectively improved.
As a further preferred technical scheme, the top limiting beam comprises a beam main body and cabinet body connecting structures arranged at two ends of the beam main body, wherein the cabinet body connecting structures are used for being fixed on corresponding upright posts in the cabinet body.
The beneficial effects are that: the top limiting beam is fixed on the upright post of the cabinet body through the cabinet body connecting structure, so that the top is limited Liang Wending.
As a further preferable technical scheme, the cabinet body connecting structure is a vertical connecting plate, a module hole is arranged on the vertical connecting plate and is used for corresponding to a fixing hole on a stand column of the cabinet body so as to be fixedly connected with the stand column through a fastener.
The beneficial effects are that: the top limiting beam is fixed on the upright post through the modulus hole on the vertical connecting plate, so that the fixing structure of the top limiting beam is simple and the installation is convenient.
As a further preferable technical scheme, the beam main body comprises a plate body and reinforcing ribs, the bottom surface of the plate body is clung to the top surface of the circuit breaker, and the reinforcing ribs are located on the top surface of the plate body.
The beneficial effects are that: the strength of the top limiting beam can be improved by the aid of the reinforcing ribs, and the circuit breaker is quite stable in upper fixing.
As a further preferable technical scheme, the cross section of the beam main body is U-shaped.
The beneficial effects are that: is convenient for processing and manufacturing.
As a further preferable technical scheme, the horizontal limiting seat is two L-shaped limiting pieces, and each L-shaped limiting piece comprises a horizontal limiting plate and a limiting beam connecting plate;
the horizontal limiting plate is used for contacting with the vertical side wall of the circuit breaker;
and the limiting beam connecting plate is provided with a mounting hole for being fixed on the lower side surface of the top limiting beam.
The beneficial effects are that: the two L-shaped limiting parts are respectively fixed at the two ends below the top limiting beam, so that the distance between the two limiting parts can be conveniently adjusted according to the size of the circuit breaker.
As a further preferable technical scheme, the L-shaped limiting piece further comprises a limiting piece reinforcing rib arranged between the horizontal limiting plate and the connecting plate.
The beneficial effects are that: the strength of the limiting piece can be improved by the limiting piece reinforcing rib, and the limiting effect in the horizontal direction is improved.
As a further preferable technical scheme, the limit part reinforcing rib is formed by a triangular rib plate.
The beneficial effects are that: the triangular rib plate has good reinforcing effect.
As a further preferable technical scheme, the connecting plate of the L-shaped limiting piece is provided with a folded edge which is folded downwards.
The beneficial effects are that: the hem is used for limiting the reinforcing rib of the limiting part, so that the structural stability of the limiting part is improved.
Drawings
FIG. 1 is a schematic view of a portion of a specific embodiment 1 of a low voltage circuit breaker locking mechanism of a switchgear for nuclear power of the present invention;
fig. 2 is an exploded schematic view of a part of a specific embodiment 1 of a locking structure of a low-voltage circuit breaker of a switchgear for nuclear power according to the present invention;
fig. 3 is a schematic diagram of the overall structure of a specific embodiment 1 of a locking structure of a low-voltage circuit breaker of a switchgear for nuclear power of the present invention (top limit beam not shown);
in the figure: 1-L-shaped limiting parts, 11-horizontal limiting plates, 12-limiting beam connecting plates, 13-mounting holes, 14-limiting part reinforcing ribs, 15-folded edges, 2-top limiting beams, 21-beam main bodies, 211-plate bodies, 2111-limiting part fixing holes, 212-reinforcing ribs, 22-vertical connecting plates, 221-module holes, 3-circuit breakers, 4-fixing plates, 51-bolts, 52-nuts, 61-bolts, 62-nuts and 10-cabinet bodies.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It is noted that relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
the low-voltage circuit breaker locking structure of the switch cabinet for nuclear power in this embodiment is a nuclear power 1E-level switch cabinet, as shown in fig. 1 to 3, the nuclear power 1E-level switch cabinet includes a cabinet body 10 and a circuit breaker 3 disposed on a fixing plate 4 in the cabinet body, and specifically, the circuit breaker 3 is fixed on the fixing plate 4 through a bolt 51 and a nut 52.
The top limiting beam 2 is further fixed on the cabinet body 10 of the switch cabinet, the top limiting beam 2 comprises a beam main body 21 and vertical connecting plates 22 positioned at two ends of the beam main body, the vertical connecting plates 22 are provided with module holes 221, the module holes 221 are used for corresponding to fixing holes on the upright posts of the cabinet body, the top limiting beam 2 is fixed on the upright posts of the switch cabinet through bolts 61 and nuts 62, and the fixing of the top limiting beam in the cabinet body is achieved.
As shown in fig. 1, the cross section of the beam main body 21 is in a U shape, and comprises a plate body 211 and reinforcing ribs 212 positioned on two sides of the plate body 211, wherein the bottom surface of the plate body 211 is tightly attached to the top surface of the circuit breaker, the reinforcing ribs are arranged on the top surface of the plate body, and the strength of the top limiting beam can be improved by arranging the reinforcing ribs, so that the upper part of the circuit breaker is fixed and stable.
The lower part of the top limiting beam 2 is provided with a horizontal limiting seat, the horizontal limiting seat is an L-shaped limiting piece 1 arranged at two ends of the lower part of the top limiting beam 2, the L-shaped limiting piece 1 comprises a horizontal limiting plate 11 and a limiting beam connecting plate 12, the horizontal limiting plate 11 is in contact with two vertical side walls of the circuit breaker 3 which are oppositely arranged, and accordingly the circuit breaker 3 is limited in the horizontal direction. The spacing beam connecting plate 12 is provided with a mounting hole 13, and the mounting hole 13 is used for corresponding to a spacing piece fixing hole 2111 on the plate body 211, so that the L-shaped spacing piece 1 is fixed on the lower side surface of the plate body through a bolt 61 and a nut 62.
As shown in fig. 2, the L-shaped limiting member 1 further includes a limiting member reinforcing rib 14 disposed between the horizontal limiting plate 11 and the limiting beam connecting plate 12, the limiting member reinforcing rib 14 is a triangular rib plate, and the strength of the L-shaped limiting member 1 can be improved by arranging the limiting member reinforcing rib 14, so that the limiting effect of the circuit breaker in the horizontal direction is improved. The connecting plate 12 of the L-shaped limiting member 1 is further provided with a folded edge 15 which is folded downwards, and the folded edge 15 is used for limiting the limiting member reinforcing rib 14, so that the structural stability of the L-shaped limiting member 1 is improved.
In the embodiment, the L-shaped limiting piece 1 and the top limiting beam 2 are formed by bending plates, so that the process is simple and the manufacturing is convenient.
Specific example 2 of the low-voltage circuit breaker locking structure of the nuclear power switchgear of the present invention:
in this embodiment, the reinforcing rib of the L-shaped stopper 1 is provided at the intermediate position of the top surface of the plate body, and the stopper reinforcing rib on the beam main body 21 is provided at the intermediate position of the stopper connecting plate in the width direction.
Specific example 3 of the low-voltage circuit breaker locking structure of the nuclear power switchgear of the present invention:
in this embodiment, the horizontal limiting seat is two cuboid limiting members fixed at two ends below the top limiting beam respectively, and one side surface of the cuboid limiting member is used for contacting with the vertical side wall of the circuit breaker, for example, an i-beam.
Specific example 4 of the low-voltage breaker locking structure of the switchgear for nuclear power of the invention:
in this embodiment, the shape of the horizontal limiting seat is a U-shape, and the horizontal limiting seat is provided with a U-shaped groove, the bottom of the U-shaped groove is used for limiting the top surface of the circuit breaker along the up-down direction, and two groove side walls of the U-shaped groove are used for limiting the circuit breaker along the horizontal direction.
Specific example 5 of the low-voltage breaker locking structure of the switchgear for nuclear power of the invention:
in this embodiment, welding is performed between the top limit beam and the horizontal limit seat.
The above description is only a preferred embodiment of the present invention, and the patent protection scope of the present invention is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a low voltage circuit breaker locking structure of cubical switchboard for nuclear power, includes the cabinet body and circuit breaker, and the bottom of circuit breaker is fixed in on the cabinet body, its characterized in that:
the locking structure of the low-voltage circuit breaker of the switch cabinet for nuclear power comprises a top limit beam;
the top limiting beam is fixed on the cabinet body, and the lower part of the top limiting beam is clung to the top surface of the circuit breaker and is used for limiting the circuit breaker along the up-down direction;
a horizontal limiting seat is fixed on the top limiting beam and is used for contacting with two vertical side walls of the circuit breaker which are arranged in opposite directions and limiting the circuit breaker along the horizontal direction;
the top limiting beam comprises a beam main body and cabinet body connecting structures arranged at two ends of the beam main body, and the cabinet body connecting structures are used for being fixed on corresponding upright posts in the cabinet body;
the horizontal limiting seat is provided with two L-shaped limiting parts, and each L-shaped limiting part comprises a horizontal limiting plate and a limiting beam connecting plate;
the horizontal limiting plate is used for contacting with the vertical side wall of the circuit breaker;
and the limiting beam connecting plate is provided with a mounting hole for being fixed on the lower side surface of the top limiting beam.
2. The low-voltage circuit breaker locking structure of a switchgear for nuclear power according to claim 1, characterized in that: the cabinet body connection structure is a vertical connection plate, a module hole is arranged on the vertical connection plate and is used for corresponding to a fixing hole on a stand column of the cabinet body so as to be fixedly connected with the stand column through a fastener.
3. The low-voltage circuit breaker locking structure of a switchgear for nuclear power according to claim 1 or 2, characterized in that: the beam main body comprises a plate body and reinforcing ribs, the bottom surface of the plate body is clung to the top surface of the circuit breaker, and the reinforcing ribs are located on the top surface of the plate body.
4. The low voltage circuit breaker locking structure of a switchgear for nuclear power according to claim 3, characterized in that: the cross section of the beam main body is U-shaped.
5. The low-voltage circuit breaker locking structure of a switchgear for nuclear power according to claim 1, characterized in that: the L-shaped limiting piece further comprises a limiting piece reinforcing rib arranged between the horizontal limiting plate and the limiting beam connecting plate.
6. The low voltage circuit breaker locking structure of a switchgear for nuclear power of claim 5, wherein: the limit piece reinforcing rib is formed by a triangular rib plate.
7. The low-voltage circuit breaker locking structure of a switchgear for nuclear power according to claim 6, characterized in that: the limit beam connecting plate is provided with a folded edge which is folded downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071586.XA CN112769048B (en) | 2019-11-05 | 2019-11-05 | Low-voltage circuit breaker locking structure of switch cabinet for nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911071586.XA CN112769048B (en) | 2019-11-05 | 2019-11-05 | Low-voltage circuit breaker locking structure of switch cabinet for nuclear power |
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| Publication Number | Publication Date |
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| CN112769048A CN112769048A (en) | 2021-05-07 |
| CN112769048B true CN112769048B (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911071586.XA Active CN112769048B (en) | 2019-11-05 | 2019-11-05 | Low-voltage circuit breaker locking structure of switch cabinet for nuclear power |
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| CN112769048A (en) | 2021-05-07 |
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