CN220172597U - Switch cabinet - Google Patents

Abstract

The utility model relates to a switch cabinet, which comprises a cabinet body and an air box arranged in the cabinet body, wherein a three-station grounding leading-out load switch comprises three moving contacts and three grounding fixed contacts, and the moving contacts and the grounding fixed contacts are oppositely arranged; the three wire inlet sleeves are respectively and electrically connected with the three moving contacts, the wire inlet sleeves are used for connecting wire inlet cables, the ground lead-out sleeve assembly comprises three ground lead-out sleeves, the three ground lead-out sleeves are respectively and electrically connected with the three ground static contacts, the ground lead-out sleeves are used for connecting an external insulation test device, and the three ground lead-out sleeves are arranged in a triangle shape. Compared with the prior art, the utility model can conveniently carry out insulation test on the switch cabinet access cable system, improves the overall detection speed, can protect the insulativity of the incoming cable and also improves the service life of the incoming cable; meanwhile, the length of the air box in the first direction can be reduced, and the arrangement of the switch cabinet is facilitated.

Description

Switch cabinet

Technical Field

The utility model relates to the technical field of cable detection, in particular to a switch cabinet.

Background

Conventional switchgear requires access to external cables prior to use and connection of cable connectors at one end of the cable for installation on the incoming cable sleeve of the switchgear.

After the switch cabinet is newly installed or operated for many years, insulation detection needs to be carried out on the cable loop. This usually requires the cable joint of inlet wire cable sleeve department to be dismantled first, then get up cable joint and inlet wire cable, and the external insulation testing arrangement of inlet wire cable only can only carry out insulation test to the cable alone, can not carry out insulation test to the whole of cubical switchboard access cable system.

In the process of implementing the present utility model, the inventor finds that the following problems exist in the prior art:

the existing switch cabinet can only perform insulation test on cables independently, and cannot perform insulation test on the whole of the switch cabinet access cable system.

Disclosure of Invention

In view of the above problems, the utility model provides a switch cabinet for solving the technical problems that the existing switch cabinet can only perform insulation test on cables independently and cannot perform insulation test on the whole of a cable system to which the switch cabinet is connected.

To achieve the above object, in a first aspect, the present inventors provide a switchgear comprising:

a cabinet body; and

the gas box is arranged in the cabinet body and comprises more than two three-station grounding leading-out load switches and a breaker body, wherein the three-station grounding leading-out load switches comprise three moving contacts and three grounding fixed contacts, and the moving contacts and the grounding fixed contacts are arranged oppositely;

the gas tank further comprises more than two wire inlet sleeve assemblies and more than two grounding lead-out sleeve assemblies, the wire inlet sleeve assemblies comprise three wire inlet sleeves, the three wire inlet sleeves are respectively electrically connected with three moving contacts, the wire inlet sleeves are used for connecting wire inlet cables, the grounding lead-out sleeve assemblies comprise three grounding lead-out sleeves, the three grounding lead-out sleeves are respectively electrically connected with three grounding static contacts, the grounding lead-out sleeves are used for connecting an external insulation test device, and the three grounding lead-out sleeves are arranged in a triangle shape.

Compared with the prior art, the technical scheme of the utility model is characterized in that the air box further comprises more than two wire inlet sleeve assemblies and more than two grounding lead-out sleeve assemblies, wherein each wire inlet sleeve assembly comprises three wire inlet sleeves, the three wire inlet sleeves are respectively and electrically connected with three moving contacts, each wire inlet sleeve is used for being connected with a wire inlet cable, each grounding lead-out sleeve assembly comprises three grounding lead-out sleeves, each grounding lead-out sleeve is respectively and electrically connected with three grounding static contacts, each grounding lead-out sleeve is used for being connected with an external insulation test device, and each grounding lead-out sleeve is in a triangular shape; when the moving contact of the three-station load switch and the grounding fixed contact are in a closing state, namely in a grounding state, the wire inlet and outlet sleeve is electrically connected with the moving contact, the moving contact is electrically connected with the grounding fixed contact, the grounding fixed contact is electrically connected with the grounding lead-out sleeve, the grounding lead-out sleeve and the cable inlet connector form a detection passage, an electrician is ensured to be capable of detecting an inlet cable on the cable inlet connector from the grounding lead-out sleeve, and an insulation test is carried out on a switch cabinet access cable system; therefore, the insulation test can be conveniently carried out on the switch cabinet access cable system, the overall detection speed is improved, the insulation of the incoming cable can be protected, and the service life of the incoming cable is prolonged; meanwhile, the three grounding leading-out sleeves are arranged in a triangle shape, so that the length of the air box in the first direction can be reduced, and the arrangement of the switch cabinet is facilitated.

As one embodiment of the present utility model, three ground lead-out bushings are arranged in a delta-shape.

Therefore, the three grounding leading-out sleeves are arranged in a delta shape, so that the length of the air box in the first direction can be effectively reduced, and the overall length of the switch cabinet is reduced.

As one implementation mode of the utility model, the gas tank further comprises a grounding short-circuit bus arranged opposite to the grounding lead-out sleeve assembly, and the grounding short-circuit bus is respectively connected with the three grounding lead-out sleeves.

Therefore, three grounding lead-out sleeves can be connected in parallel through the grounding short-circuit bus, and the function of the grounding switch can be realized.

In one embodiment of the present utility model, the ground shorting busbar has a triangular cross-sectional shape.

Therefore, the grounding short-circuit bus bar is triangular in cross section, so that the grounding short-circuit bus bar can be conveniently installed, and the materials of the grounding short-circuit bus bar are reduced.

As an embodiment of the present utility model, the switch cabinet further includes a withstand voltage test rod, and the withstand voltage test rod is fixed on the ground lead-out sleeve through a nut.

Therefore, the external insulation test device is conveniently connected with the grounding lead-out sleeve through the voltage-resistant test rod.

As one embodiment of the present utility model, two or more three-position ground lead-out load switches are arranged in a first direction, and the breaker body is disposed above one of the three-position ground lead-out load switches.

So, make things convenient for the setting of circuit breaker body, reduce the length of cubical switchboard in the first direction.

As one embodiment of the utility model, the air box comprises a front box plate, more than two three-station grounding lead-out load switches are arranged on the front box plate along a first direction, more than two grounding lead-out sleeve assemblies are arranged on the front box plate along the first direction, and the front box plate comprises an accommodating space for accommodating more than two wire inlet sleeve assemblies.

Therefore, the three-station grounding leading-out load switch, the grounding leading-out sleeve assembly and the wire inlet sleeve assembly are conveniently arranged, and the accommodating space is located at the lowest part of the front box plate, so that the cable inlet is convenient.

As one embodiment of the present utility model, two or more inlet bushing assemblies are positioned below two or more ground outlet bushing assemblies.

Therefore, more than two wire inlet sleeve assemblies are located below the more than two grounding lead-out sleeve assemblies, and the lower parts of the wire inlet sleeve assemblies are convenient for wire inlet of the cable.

As one implementation mode of the utility model, the grounding lead-out sleeve assembly is positioned on the front surface of the cabinet body, and a cable test cover plate is arranged on the cabinet body and is arranged opposite to the grounding lead-out sleeve assembly.

Therefore, under the state of grounding, the switch cabinet releases the screw of the cable testing door, and the cable testing door can be opened, and the three grounding lead-out sleeves are positioned on the front surface of the cabinet body, so that the switch cabinet can be conveniently connected into the cable system for detection.

The foregoing summary is merely an overview of the present utility model, and may be implemented according to the text and the accompanying drawings in order to make it clear to a person skilled in the art that the present utility model may be implemented, and in order to make the above-mentioned objects and other objects, features and advantages of the present utility model more easily understood, the following description will be given with reference to the specific embodiments and the accompanying drawings of the present utility model.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of the present utility model and are not to be construed as limiting the utility model.

In the drawings of the specification:

fig. 1 is a schematic structural view of a switchgear according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of an air box according to an embodiment of the present utility model;

FIG. 3 is a schematic front view of an air box according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of the inside of an air box according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the structure of an incoming line bushing assembly and a ground outgoing bushing assembly according to one embodiment of the present utility model;

fig. 6 is a schematic diagram of a three-position ground lead-out load switch according to an embodiment of the present utility model.

Reference numerals referred to in the above drawings are explained as follows:

1. a cabinet body; 11. a cable test cover plate;

2. an air box; 21. a front box plate; 22. an accommodation space;

3. a three-station load switch;

31. a first conductor; 34. a moving contact; 35. a grounding static contact; 36. a second conductor;

41. a grounding leading-out sleeve; 42. grounding short-circuit bus; 45. a wire inlet sleeve; 46. a pressure-resistant test rod;

5. a circuit breaker body.

Detailed Description

In order to describe the possible application scenarios, technical principles, practical embodiments, and the like of the present utility model in detail, the following description is made with reference to the specific embodiments and the accompanying drawings. The embodiments described herein are only for more clearly illustrating the technical aspects of the present utility model, and thus are only exemplary and not intended to limit the scope of the present utility model.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of the phrase "in various places in the specification are not necessarily all referring to the same embodiment, nor are they particularly limited to independence or relevance from other embodiments. In principle, in the present utility model, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment may be combined in any manner to form a corresponding implementable technical solution.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present utility model pertains; the use of related terms herein is for the purpose of describing particular embodiments only and is not intended to limit the utility model.

In the description of the present utility model, the term "and/or" is a representation for describing a logical relationship between objects, which means that three relationships may exist, for example, a switch cabinet and/or B, which means that: there are three cases, switch cabinet, B, and both switch cabinet and B. In addition, the character "/" herein generally indicates that the front-to-back associated object is an "or" logical relationship.

In the present utility model, terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual number, order, or sequence of such entities or operations.

Without further limitation, the use of the terms "comprising," "including," "having," or other like terms in this specification is intended to cover a non-exclusive inclusion, such that a process, method, or article of manufacture that comprises a list of elements does not include additional elements but may include other elements not expressly listed or inherent to such process, method, or article of manufacture.

As in the understanding of "review guidelines," the expressions "greater than", "less than", "exceeding" and the like are understood to exclude this number in the present utility model; the expressions "above", "below", "within" and the like are understood to include this number. Furthermore, in the description of embodiments of the present utility model, the meaning of "a plurality of" is two or more (including two), and similarly, the expression "a plurality of" is also to be understood as such, for example, "a plurality of" and the like, unless specifically defined otherwise.

In the description of embodiments of the present utility model, spatially relative terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," etc., are used herein as a basis for the description of the embodiments or as a basis for the description of the embodiments, and are not intended to indicate or imply that the devices or components referred to must have a particular position, a particular orientation, or be configured or operated in a particular orientation and therefore should not be construed as limiting the embodiments of the present utility model.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "affixed," "disposed," and the like as used in the description of embodiments of the utility model should be construed broadly. For example, the "connection" may be a fixed connection, a detachable connection, or an integral arrangement; the device can be mechanically connected, electrically connected and communicated; it can be directly connected or indirectly connected through an intermediate medium; which may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the embodiments of the present utility model can be understood by those skilled in the art to which the present utility model pertains according to circumstances.

The existing switch cabinet can only perform insulation test on cables independently, and cannot perform insulation test on the whole of the switch cabinet access cable system.

The switch cabinet related to the embodiment can be applied to various technical fields of switch cabinet insulation test.

Referring to fig. 1 to 6, the present embodiment relates to a switch cabinet, including a cabinet body 1 and an air box 2 disposed in the cabinet body 1, wherein the air box 2 includes more than two three-station ground lead-out load switches and a breaker body 5, the three-station ground lead-out load switches include three moving contacts 34 and three ground fixed contacts 35, and the moving contacts 34 are disposed opposite to the ground fixed contacts 35; the gas tank 2 further comprises more than two wire inlet sleeve 45 assemblies and more than two grounding wire outlet sleeve 41 assemblies, the wire inlet sleeve 45 assemblies comprise three wire inlet sleeves 45, the three wire inlet sleeves 45 are respectively and electrically connected with the three moving contacts 34, the wire inlet sleeves 45 are used for connecting wire inlet cables, the grounding wire outlet sleeve 41 assemblies comprise three grounding wire outlet sleeves 41, the three grounding wire outlet sleeves 41 are respectively and electrically connected with the three grounding fixed contacts 35, the grounding wire outlet sleeves 41 are used for connecting an external insulation test device, and the three grounding wire outlet sleeves 41 are arranged in a triangle shape.

In this embodiment, the incoming sleeve 45 is electrically connected to the moving contact 34 through at least one second electrical conductor 36, and the ground outgoing sleeve 41 is electrically connected to the ground fixed contact 35 through at least one first electrical conductor 31.

The gas box 2 further comprises more than two wire inlet sleeve 45 assemblies and more than two grounding wire outlet sleeve 41 assemblies, the wire inlet sleeve 45 assemblies comprise three wire inlet sleeves 45, the three wire inlet sleeves 45 are respectively and electrically connected with the three moving contacts 34, the wire inlet sleeves 45 are used for connecting wire inlet cables, the grounding wire outlet sleeve 41 assemblies comprise three grounding wire outlet sleeves 41, the three grounding wire outlet sleeves 41 are respectively and electrically connected with the three grounding fixed contacts 35, the grounding wire outlet sleeves 41 are used for connecting an external insulation test device, and the three grounding wire outlet sleeves 41 are arranged in a triangle shape;

when the moving contact 34 and the grounding fixed contact 35 of the three-station load switch 3 are in a closing state, namely in a grounding state, the wire inlet and outlet sleeve is electrically connected with the moving contact 34, the moving contact 34 is electrically connected with the grounding fixed contact 35, the grounding fixed contact 35 is electrically connected with the grounding lead-out sleeve 41, the grounding lead-out sleeve 41 and a cable inlet connector form a detection passage, an electrician is ensured to be capable of detecting an inlet cable on the cable inlet connector from the grounding lead-out sleeve 41, and an insulation test is carried out on a switch cabinet access cable system;

therefore, the insulation test can be conveniently carried out on the switch cabinet access cable system, the overall detection speed is improved, the insulation of the incoming cable can be protected, and the service life of the incoming cable is prolonged; meanwhile, the three grounding lead-out sleeves 41 are arranged in a triangle shape, so that the length of the air tank 2 in the first direction can be reduced, and the arrangement of the switch cabinet is facilitated.

In this embodiment, as shown in the drawing, the first direction is the longitudinal direction of the cabinet 1, and is also the longitudinal direction of the air box 2.

According to some embodiments of the utility model, optionally, three ground extraction bushings 41 are provided in a delta-shape.

Thus, the three ground lead-out sleeves 41 are arranged in a delta shape, so that the length of the air tank 2 in the first direction can be effectively reduced, and the overall length of the switch cabinet can be reduced.

According to some embodiments of the present utility model, the air box 2 further includes an earthing shorting busbar 42 disposed opposite to the earthing lead-out sleeve 41 assembly, and the earthing shorting busbars 42 are respectively connected with the three earthing lead-out sleeves 41.

In this way, the three ground lead-out bushings 41 can be connected in parallel by the ground shorting bus 42, and the function of the ground switch itself can be realized.

According to some embodiments of the utility model, the ground shorting busbar 42 may alternatively have a triangular cross-sectional shape.

Thus, the ground shorting bar 42 can be conveniently mounted by forming the ground shorting bar 42 in a triangular cross-sectional shape, and the material of the ground shorting bar 42 can be reduced.

According to some embodiments of the utility model, optionally, the switch cabinet further comprises a withstand voltage test bar 46, wherein the withstand voltage test bar 46 is fixed on the ground lead-out sleeve 41 by a nut.

Thus, the connection between the external insulation test device and the ground lead-out bushing 41 is facilitated by the withstand voltage test bar 46.

According to some embodiments of the present utility model, optionally, more than two three-position ground lead-out load switches are arranged in a first direction, and the breaker body 5 is disposed above one of the three-position ground lead-out load switches.

So, make things convenient for the setting of circuit breaker body 5, reduce the length of cubical switchboard in the first direction.

According to some embodiments of the present utility model, optionally, the air box 2 includes a front box plate 21, and the two or more three-position ground lead-out load switches are disposed on the front box plate 21 along the first direction, and the two or more ground lead-out sleeve 41 assemblies are disposed on the front box plate 21 along the first direction, and the front box plate 21 includes a receiving space 22 for receiving the two or more inlet sleeve 45 assemblies.

In this way, the three-station grounding lead-out load switch, the grounding lead-out sleeve 41 assembly and the wire inlet sleeve 45 assembly are conveniently arranged, and the accommodating space 22 is located at the lowest part of the front box plate 21, so that the wire inlet of a cable is facilitated.

According to some embodiments of the utility model, optionally, more than two inlet bushing 45 assemblies are located below more than two grounded outlet bushing 41 assemblies.

In this way, more than two incoming line sleeve 45 assemblies are located below more than two grounding outgoing sleeve 41 assemblies, so that the lower parts of the incoming line sleeve 45 assemblies are convenient for incoming cables.

According to some embodiments of the present utility model, optionally, the ground lead-out sleeve 41 assembly is located on the front surface of the cabinet 1, and the cabinet 1 is provided with a cable test cover 11, and the cable test cover 11 is disposed opposite to the ground lead-out sleeve 41 assembly.

So, the switch cabinet can open the cable test door under the state of grounding by releasing the screw of the cable test door, and the three grounding lead-out sleeves 41 are positioned on the front surface of the cabinet body 1, so that the switch cabinet can be conveniently connected into a cable system for detection.

The embodiment also relates to an insulation detection method of the switch cabinet, which is applied to the switch cabinet and comprises the following steps of:

firstly, switching a three-station load switch 3 from a closing state to a separating state;

step two, switching the three-station load switch 3 from a switching-off state to a grounding state, so that a detection passage is formed between the grounding lead-out sleeve 41 and the wire inlet and outlet sleeve;

step three, mounting an insulation testing device on the wire inlet sleeve 45;

and fourthly, performing an insulation test on the incoming cable through the detection passage by the insulation test device.

The cable test door may be opened only when the load switch is in the ground position.

Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (9)

1. A switchgear comprising:

a cabinet body; and

the gas box is arranged in the cabinet body and comprises more than two three-station grounding leading-out load switches and a breaker body, wherein the three-station grounding leading-out load switches comprise three moving contacts and three grounding fixed contacts, and the moving contacts and the grounding fixed contacts are arranged oppositely;

the gas tank further comprises more than two wire inlet sleeve assemblies and more than two grounding lead-out sleeve assemblies, the wire inlet sleeve assemblies comprise three wire inlet sleeves, the three wire inlet sleeves are respectively electrically connected with three moving contacts, the wire inlet sleeves are used for connecting wire inlet cables, the grounding lead-out sleeve assemblies comprise three grounding lead-out sleeves, the three grounding lead-out sleeves are respectively electrically connected with three grounding static contacts, the grounding lead-out sleeves are used for connecting an external insulation test device, and the three grounding lead-out sleeves are arranged in a triangle shape.

2. The switchgear according to claim 1, characterized in that three ground outlet bushings are arranged in a delta-shape.

3. The switchgear according to claim 2, characterized in that the gas box further comprises a ground shorting busbar arranged opposite the ground outlet bushing assembly, the ground shorting busbars being connected with the three ground outlet bushings, respectively.

4. A switchgear according to claim 3, characterized in that the sectional shape of the ground shorting busbar is triangular.

5. The switchgear according to claim 1, characterized in that it further comprises a withstand voltage test bar fixed to the ground outlet sleeve by means of a nut.

6. The switchgear according to claim 1, characterized in that more than two three-position ground lead-out load switches are arranged in a first direction, the breaker body being arranged above one of the three-position ground lead-out load switches.

7. The switchgear according to claim 6, characterized in that the gas box comprises a front box plate on which two or more three-position ground lead-out load switches are arranged in a first direction, and two or more ground lead-out bushing assemblies are arranged in a first direction, the front box plate comprising accommodation spaces for accommodating the two or more inlet bushing assemblies.

8. The switchgear as claimed in claim 7, wherein more than two inlet bushing assemblies are located below more than two grounded outlet bushing assemblies.

9. The switchgear according to claim 1, characterized in that the ground lead-out sleeve assembly is located on the front side of the cabinet body, on which a cable test cover plate is arranged, which is arranged opposite to the ground lead-out sleeve assembly.