CN221862308U - An armored removable switch cabinet - Google Patents

Abstract

The utility model discloses an armored movable switch cabinet which comprises a cabinet body, wherein a wall bushing, a contact box, a current sensor and a grounding switch are arranged in the cabinet body, the interior of the cabinet body is divided into a bus chamber and a cable chamber which are arranged up and down, the contact box is arranged between the bus chamber and the cable chamber, the wall bushing is arranged in the bus chamber, the current sensor and the grounding switch are both positioned in the cable chamber, the wall bushing is connected with the contact box through a first busbar, the contact box is connected with the current sensor through a second busbar, and the current sensor is connected with the grounding switch through a third busbar; the contact box interfaces on both sides deflect away from the middle contact box so that the first busbar on both sides is away from the first busbar in the middle and the second busbar on both sides is away from the second busbar in the middle. The utility model can realize insulation isolation among the busbar on the existing cabinet body, and the insulation partition plate is not required to be additionally arranged between the busbar and the cabinet body, thereby meeting the related requirements and ensuring the safe operation of equipment.

Description

An armored removable switch cabinet

Technical Field

The utility model mainly relates to the technical field of power supply equipment, in particular to an armored removable switch cabinet.

Background Art

With the rapid development of social economy, the requirements for power supply reliability and safety are getting higher and higher. The KYN61-40.5KV armored removable switch cabinet was originally designed with a cabinet width of 1400mm, a phase spacing of 300mm in the cabinet, and a 1250A configuration. The branch bar in the cabinet uses 80*10 or 60*12 copper bars. At this time, the phase clearance is 220 or 240mm, which does not meet the requirements of the national standard (clearance ≥ 300mm). Manufacturers generally use a composite insulation method with interphase insulation partitions, but after the equipment has been running for a long time, the aging of the insulation partition will cause the busbar in the cabinet to discharge the insulation partition, which poses a great safety hazard. In severe cases, it may even cause a phase short circuit, resulting in huge economic losses.

Utility Model Content

The technical problem to be solved by the utility model is: in view of the technical problems existing in the prior art, the utility model provides an armored removable switch cabinet with a simple structure, which can realize the insulation isolation requirements between busbars on the existing cabinet.

In order to solve the above technical problems, the technical solution proposed by the utility model is:

An armored removable switch cabinet comprises a cabinet body, wherein a wall bushing, a contact box, a current sensor and a grounding switch are arranged in the cabinet body, the interior of the cabinet body is divided into a busbar chamber and a cable chamber arranged up and down, the contact box is installed between the busbar chamber and the cable chamber, the wall bushing is installed in the busbar chamber, the current sensor and the grounding switch are both located in the cable chamber, the wall bushing is connected to the contact box through a first busbar, the contact box is connected to the current sensor through a second busbar, and the current sensor is connected to the grounding switch through a third busbar; the contact box interfaces on both sides are deflected in a direction away from the middle contact box, so that the first busbars on both sides are away from the middle first busbar, and the second busbars on both sides are away from the middle second busbar.

As a further improvement of the above technical solution:

The contact box is provided with a cover shell to achieve insulation between adjacent first busbars and ends connected to the contact box, and to achieve insulation between adjacent second busbars and ends connected to the contact box.

The current sensor is provided with a skirt to achieve insulation between the adjacent second busbars and the end connected to the current sensor, and to achieve insulation between the third busbars and the end connected to the current sensor.

An insulating cover is provided on the grounding switch to achieve insulation between the adjacent third busbars and the end connected to the grounding switch.

The insulating cover is an integrated epoxy resin insulating cover.

Adjacent first busbars are staggered in the vertical direction of the cabinet.

Adjacent second busbars are staggered in the vertical direction of the cabinet.

Adjacent second busbars are staggered along the front-to-back direction of the cabinet.

Adjacent third busbars are staggered in the vertical direction of the cabinet.

Adjacent third busbars are staggered along the front-to-back direction of the cabinet.

Compared with the prior art, the advantages of the utility model are:

Under the premise of not changing the original cabinet width (such as 1400mm), the utility model deflects the contact box interfaces on both sides away from the middle contact box to make the first busbars on both sides away from the middle first busbar, and the second busbars on both sides away from the middle second busbar, and by adding a cover shell to the contact box, adding a skirt to the current sensor, adding an insulating cover to the grounding switch, and changing the arrangement of each busbar at the same time, insulation isolation between the busbars is achieved, the air clearance of the conductors in the cabinet is met to be ≥300mm, and no insulating partitions need to be installed between phases, which complies with national standards and national grid requirements and ensures safe operation of the equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front view of a switch cabinet according to an embodiment of the present invention.

FIG. 2 is a side view of a switch cabinet according to an embodiment of the present invention.

Fig. 3 is a structural diagram of a contact box of the present invention in an embodiment; (a) is a main view; (b) is a cross-sectional view.

FIG4 is a structural diagram of a current transformer of the present invention in an embodiment; (a) is a front view; and (b) is a side view.

FIG5 is a structural diagram of an embodiment of a grounding switch of the present invention; (a) is a front view; and (b) is a side view.

Legend: 1. Cabinet; 101. Busbar room; 102. Cable room; 2. Contact box; 201. Cover; 3. Current sensor; 301. Skirt; 4. Earthing switch; 401. Insulation cover; 5. First busbar; 6. Second busbar; 7. Third busbar; 8. Wall bushing.

DETAILED DESCRIPTION

The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figures 1-2, the armored removable switch cabinet provided by the embodiment of the utility model includes a cabinet body 1, in which a wall bushing 8, a contact box 2, a current sensor 3 and a grounding switch 4 are arranged, and the interior of the cabinet body 1 is divided into a busbar chamber 101 and a cable chamber 102 arranged up and down, the contact box 2 is installed between the busbar chamber 101 and the cable chamber 102, the wall bushing 8 is installed in the busbar chamber 101, the current sensor 3 and the grounding switch 4 are both located in the cable chamber 102, the wall bushing 8 and the contact box 2 are connected through a first busbar 5, the contact box 2 and the current sensor 3 are connected through a second busbar 6, and the current sensor 3 and the grounding switch 4 are connected through a third busbar 7; the interfaces of the contact box 2 on both sides are deflected in the direction away from the middle contact box 2, so that the first busbars 5 on both sides are away from the middle first busbar 5, and the second busbars 6 on both sides are away from the middle second busbar 6. As shown in FIG. 2 , the distance between the centers of adjacent contact boxes 2 is 300 mm. By deflecting the contact boxes 2 on both sides, the distance between the adjacent first busbars 5 and the adjacent second busbars 6 reaches 360 mm, meeting the relevant requirements.

As shown in FIG3 , a cover 201 is provided on the contact box 2 to achieve insulation between adjacent first busbars 5 and the ends of the contact box 2, and to achieve insulation between adjacent second busbars 6 and the ends of the contact box 2. In addition, adjacent first busbars 5 are staggered in the vertical direction of the cabinet 1. Through the staggered overlap of the cover 201 and the adjacent first busbars 5, the interphase clearance is ≥ 300 mm. The above structure is simple and easy to operate.

As shown in FIG4 , a skirt 301 is provided at the primary connection of the current sensor 3 to achieve insulation between the adjacent second busbars 6 and the end connected to the current sensor 3, and to achieve insulation between the third busbar 7 and the end connected to the current sensor 3. The adjacent second busbars 6 are staggered in the up-and-down direction of the cabinet 1, and are staggered in the front-to-back direction of the cabinet 1. Through the staggered overlap between the cover 201, the skirt 301 and the adjacent phase second busbars 6 in the up-and-down and front-to-back directions, the phase-to-phase net distance ≥ 300 mm is met. The above structure is simple and easy to operate.

As shown in FIG5 , an insulating cover 401 is provided on the grounding switch 4 to achieve insulation between the adjacent third busbars 7 and the end connected to the grounding switch 4. The insulating cover 401 is an integrated epoxy resin insulating cover 401. In addition, the adjacent third busbars 7 are staggered in the vertical direction of the cabinet 1, and are staggered in the front-to-back direction of the cabinet 1. Through the staggered overlap between the skirt 301, the insulating cover 401 and the adjacent phase third busbars 7 in the vertical and front-to-back directions, the phase-to-phase net distance ≥ 300 mm is met. The above structure is simple and easy to operate.

Under the premise of not changing the original cabinet width (such as 1400mm), the utility model deflects the interfaces of the contact boxes 2 on both sides away from the middle contact box 2, so that the first busbars 5 on both sides are away from the middle first busbar 5, and the second busbars 6 on both sides are away from the middle second busbar 6, and by adding a cover 201 to the contact box 2, adding a skirt 301 to the current sensor 3, adding an insulating cover 401 to the grounding switch 4, and changing the arrangement of each busbar at the same time, insulation isolation between the busbars is achieved, the air clearance of the conductors in the cabinet is met to be ≥300mm, and no insulating partitions need to be installed between phases, which meets the national standards and the requirements of the State Grid, and ensures the safe operation of the equipment.

In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims (10)

1. An armored removable switch cabinet, comprising a cabinet (1), wherein a wall bushing (8), a contact box (2), a current sensor (3) and a grounding switch (4) are arranged in the cabinet (1), wherein the cabinet (1) is internally divided into a busbar chamber (101) and a cable chamber (102) arranged in an upper and lower manner, wherein the contact box (2) is installed between the busbar chamber (101) and the cable chamber (102), wherein the wall bushing (8) is installed in the busbar chamber (101), and wherein the current sensor (3) and the grounding switch (4) are both located in the cable chamber (102). 2), characterized in that the wall bushing (8) and the contact box (2) are connected via a first busbar (5), the contact box (2) and the current sensor (3) are connected via a second busbar (6), and the current sensor (3) and the grounding switch (4) are connected via a third busbar (7); the interfaces of the contact boxes (2) on both sides are deflected in a direction away from the middle contact box (2), so that the first busbars (5) on both sides are away from the first busbar (5) in the middle, and the second busbars (6) on both sides are away from the second busbar (6) in the middle. 2. The armored removable switch cabinet according to claim 1 is characterized in that a cover (201) is provided on the contact box (2) to achieve insulation between adjacent first busbars (5) and the ends connected to the contact box (2), and to achieve insulation between adjacent second busbars (6) and the ends connected to the contact box (2). 3. The armored removable switch cabinet according to claim 1 is characterized in that a skirt (301) is provided on the current sensor (3) to achieve insulation between the adjacent second busbar (6) and the end connected to the current sensor (3), and to achieve insulation between the third busbar (7) and the end connected to the current sensor (3). 4. The armored removable switch cabinet according to claim 1 is characterized in that an insulating cover (401) is provided on the grounding switch (4) to achieve insulation between the adjacent third busbars (7) and the ends connected to the grounding switch (4). 5. The armored removable switch cabinet according to claim 4, characterized in that the insulating cover (401) is an integrated epoxy resin insulating cover. 6. The armored removable switch cabinet according to any one of claims 1 to 5, characterized in that adjacent first busbars (5) are staggered in the vertical direction of the cabinet body (1). 7. The armored removable switch cabinet according to any one of claims 1 to 5, characterized in that adjacent second busbars (6) are staggered in the vertical direction of the cabinet body (1). 8. The armored removable switch cabinet according to claim 7, characterized in that adjacent second busbars (6) are staggered in the front-to-back direction of the cabinet body (1). 9. The armored removable switch cabinet according to any one of claims 1 to 5, characterized in that adjacent third busbars (7) are staggered in the vertical direction of the cabinet body (1). 10. The armored removable switch cabinet according to claim 9, characterized in that adjacent third busbars (7) are staggered in the front-to-back direction of the cabinet body (1).