CN219123700U - Leakage monitoring equipment for switch cabinet and switch cabinet - Google Patents

Abstract

The utility model provides an electric leakage monitoring device for a switch cabinet and the switch cabinet, wherein at least one cable and one main grounding component are arranged in the switch cabinet (1), and the electric leakage monitoring device comprises: -a first electrically conductive member (2), said first electrically conductive member (2) being arranged in said switchgear cabinet (1), each of said cables being connected to said first electrically conductive member (2); a fixing portion (3), wherein the fixing portion (3) is arranged at the outer side of the switch cabinet (1), the first conductive component (2) is connected to the fixing portion (3), and a current detection device (6) can detect current passing through the fixing portion (3); and the second conductive component (4) is arranged in the switch cabinet (1) and connected to the fixing part (3), and the second conductive component (4) is connected to the main grounding component.

Description

Leakage monitoring equipment for switch cabinet and switch cabinet

Technical Field

The utility model relates to the field of power systems, in particular to leakage monitoring equipment for a switch cabinet and the switch cabinet.

Background

The switch cabinet is an important component in the power system, and is used for switching, controlling and protecting electric equipment in the process of generating, transmitting, distributing and converting electric energy in the power system. The switchgear cabinet generally includes an air chamber, an operation chamber, a cable chamber, and a low-voltage chamber. For a cable chamber, a number of cables will be placed therein. As the service life increases, certain cables age and cause current leakage problems.

Therefore, it is necessary to monitor whether the current of the cable leaks.

Disclosure of Invention

In view of this, the present utility model proposes an electrical leakage monitoring device for a switchgear provided with at least one cable and one main grounding member, comprising:

a first conductive member disposed in the switch cabinet, each of the cables being connected to the first conductive member;

a fixing portion provided outside the switch cabinet, the first conductive member being connected to the fixing portion, and a current detecting device capable of detecting a current passing through the fixing portion;

and the second conductive part is arranged in the switch cabinet and connected with the fixing part, and the second conductive part is connected with the main grounding part.

According to the leakage monitoring equipment for the switch cabinet, the loop is formed through the first conductive part, the fixing part and the second conductive part, whether leakage occurs to the cable can be monitored, and the current generated by leakage can be grounded through the main grounding part, so that personal injury to workers is avoided. The scheme does not need to change the existing structure of the switch cabinet, and is convenient and simple to realize and low in cost.

According to the leakage monitoring apparatus as described above, optionally, the fixing portion includes:

the two ends of the conductive body are respectively fixed on the switch cabinet;

and the first insulating layer covers the conductive body.

In this way, injury to staff can be avoided

According to the leakage monitoring apparatus as described above, optionally, further comprising: and the first conductive component and/or the second conductive component are/is fixed on the insulating columns. The insulating column is used for isolating the first conductive component and/or the second conductive component from the cabinet body of the switch cabinet so as to prevent the current of the first conductive component and/or the second conductive component from flowing through the cabinet body of the switch cabinet when current leakage occurs, thereby avoiding injury to staff.

According to the leakage monitoring apparatus as described above, optionally, further comprising: at least one first insulating connector for securing the securing portion to the switch cabinet.

According to the leakage monitoring device as described above, optionally, the first conductive member is provided with a plurality of through holes, and the cable can be connected to the first conductive member through the through holes. Thus, the safety of the staff can be further ensured.

According to the leakage monitoring device as described above, optionally, the second conductive member is a soft conductor, and the soft conductor surface is covered with a second insulating layer. So that the applicability of the second conductive member is greatly improved.

According to the leakage monitoring device as described above, optionally, the current detecting device is sleeved on the fixing portion.

According to the leakage monitoring device as described above, optionally, at least a portion of the fixing portion extends in a direction parallel to a plane in which the switch cabinet is placed, and the current detecting means is sleeved on the portion. This facilitates the accurate measurement of the current flowing through the fixing portion by the current detecting means.

According to the leakage monitoring device as described above, the current detection means may be optionally further included.

According to the leakage monitoring device as described above, optionally, the current detecting means is a current transformer or a clamp ammeter.

The utility model also provides a switch cabinet, which comprises the leakage monitoring equipment for the switch cabinet in any embodiment.

Drawings

The above and other features and advantages of the present utility model will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:

fig. 1 is a schematic view of the structure of the leakage monitoring device for a switchgear according to the present utility model inside the switchgear.

Fig. 2 is a schematic structural view of a fixing portion of the leakage monitoring apparatus for a switchgear according to the present utility model.

Fig. 3 is a schematic structural view of a current detecting device for an electric leakage monitoring apparatus of a switchgear according to the present utility model.

Wherein, the reference numerals are as follows:

1-switch cabinet

2-first conductive part

21-through hole

3-fixing part

4-second conductive part

5-insulating column

6-current detection device

7-first insulating connector

Detailed Description

The present utility model will be further described in detail with reference to the following examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. Nouns and pronouns for humans in this patent application are not limited to a particular gender.

The utility model provides an electric leakage monitoring device for a switch cabinet, which can monitor the electric leakage condition of a cable. At least one cable and one main grounding element are arranged in the switchgear cabinet 1. The cable can be located in the cable chamber, and the main grounding component is used for grounding, and the main grounding component is generally located at the rear side in the switch cabinet 1 cabinet, so that the switch cabinet 1 is grounded, and injury to staff is avoided. The above structures are all existing structures and are not described here again.

As shown in fig. 1 to 3, a schematic structure of the leakage monitoring apparatus for a switchgear according to the present embodiment is shown. The leakage monitoring device comprises a first conductive member 2, a fixing portion 3 and a second conductive member 4.

Wherein a first conductive member 2 is disposed in the switch cabinet 1, and each of the cables is connected to the first conductive member 2. The cable here may be a cable in a cable chamber. The first conductive part 2 may be provided with a plurality of through holes 21, through which holes 21 the cable may be fastened to the first conductive part 2, although the cable may be fastened to the first conductive part 2 by other means. As an exemplary illustration, the first conductive part 2 may be a conductive strip, for example a copper strip, which is a common part of the switchgear 1, which has good electrical conductivity and low cost.

The fixing portion 3 is disposed outside the switch cabinet 1, the first conductive member 2 is connected to the fixing portion 3, and a current detecting device 6 can detect a current passing through the fixing portion 3. As shown in fig. 1 and 2, the extending direction of the fixing portion 3 is a lateral direction. Specifically, the fixing portion 3 is mounted on a side of the switchgear cabinet 1 near the bottom, which is generally a portion below the cable chamber or near the bottom. The shape of the fixing portion 3 may be a handle as shown in fig. 1 and 2, or may be any shape, and may be specifically selected according to actual needs. As an exemplary illustration, at least a portion of the fixing portion 3 extends in a direction parallel to a plane in which the switch cabinet 1 is placed, and the current detecting device 6 is sleeved on the portion, so that the current detecting device 6 accurately measures the current flowing through the fixing portion 3.

Alternatively, as shown in fig. 3, the current detecting device 6 may be a current transformer, and may also be a clamp ammeter, which may be specifically selected according to actual needs, and will not be described herein.

According to the leakage monitoring equipment for the switch cabinet, the loop is formed through the first conductive part 2, the fixing part 3 and the second conductive part 4, so that whether leakage occurs in the cable can be monitored, and the current generated by leakage can be grounded through the main grounding part, so that personal injury to workers is avoided. The scheme does not need to change the existing structure of the switch cabinet 1, and is convenient and simple to realize and low in cost.

Alternatively, the fixing portion 3 includes a conductive body (not shown) and a first insulating layer (not shown), wherein both ends of the conductive body are respectively fixed to the switch cabinet 1, which is fixed to the outside of the switch cabinet 1 as shown in fig. 1; the first insulating layer covers the conductive body, so that injury to workers can be avoided. Although the current flowing through the fixing portion 3 is not so large, the first insulating layer may be provided for safety of the worker. The material of the conductive body is copper, for example, and the material of the first insulating layer is rubber, for example.

Optionally, the leakage monitoring device further comprises a plurality of insulation columns 5, the insulation columns 5 are fixed on the inner side wall of the switch cabinet 1, and the first conductive component 2 and/or the second conductive component 4 are/is fixed on the insulation columns 5. The insulating column 5 is used for isolating the first conductive component 2 and/or the second conductive component 4 from the cabinet body of the switch cabinet 1, so as to prevent the current of the first conductive component 2 and/or the second conductive component 4 from flowing through the cabinet body of the switch cabinet 1 when current leakage occurs, thereby avoiding injury to staff. Fig. 1 shows a case in which two insulating columns 5 are provided on the inner side wall of the switchgear 1, and the number can be specifically set according to actual needs. In addition, since the second conductive member 4 is connected to the main grounding member, the main grounding member mainly grounds the entire switchgear 1, and is generally near the rear of the switchgear body, so that the second conductive member 4 corresponds to the main grounding member connected to the outside of the switchgear 1, and since the inner member needs to be avoided, a soft conductor may be used as the conductive member of the second conductive member 4, so that the applicability of the second conductive member 4 is greatly improved, and in order to avoid the influence of the second conductive member 4, a second insulating layer may be further covered on the surface of the soft conductor.

Alternatively, for the fixing portion 3, it may be fixed to the switch cabinet 1 by a first insulating connector 7. The first insulating connecting member 7 may be an internal screw member, and as shown in fig. 2 and 3, both ends of the first conductive member 2, which is in the shape of a handle, are respectively provided with a fixing portion 3, and the first insulating connecting member 7 may be closely attached to the outer side wall of the switch cabinet 1 by providing a gasket and a sealing ring. The first insulating connector 7 may be made of a resin material. Thus, the safety of the staff can be further ensured.

The utility model also provides a switch cabinet 1, which comprises the leakage monitoring equipment for the switch cabinet in any embodiment. The specific beneficial effects are the same as those of the foregoing embodiments, and will not be described in detail herein.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (11)

1. Leakage monitoring equipment for a switchgear (1), provided with at least one cable and one main grounding element in the switchgear (1), characterized in that it comprises:

-a first electrically conductive member (2), said first electrically conductive member (2) being arranged in said switchgear cabinet (1), each of said cables being connected to said first electrically conductive member (2);

a fixing portion (3), wherein the fixing portion (3) is arranged at the outer side of the switch cabinet (1), the first conductive component (2) is connected to the fixing portion (3), and a current detection device (6) can detect current passing through the fixing portion (3);

and the second conductive component (4) is arranged in the switch cabinet (1) and connected to the fixing part (3), and the second conductive component (4) is connected to the main grounding component.

2. The leakage monitoring apparatus according to claim 1, wherein the fixing portion (3) includes:

the two ends of the conductive body are respectively fixed on the switch cabinet (1);

and the first insulating layer covers the conductive body.

3. The leakage monitoring device of claim 2, further comprising:

and a plurality of insulating columns (5), wherein each insulating column (5) is fixed on the inner side wall of the switch cabinet (1), and the first conductive component (2) and/or the second conductive component (4) are/is fixed on the insulating column (5).

4. The leakage monitoring apparatus according to claim 1, further comprising:

-at least one first insulating connection (7), the first insulating connection (7) being used for fixing the fixing part (3) to the switchgear cabinet (1).

5. The leakage monitoring device according to claim 1, characterized in that the first conductive part (2) is provided with a number of through holes (21), the cable being connectable to the first conductive part (2) through the through holes (21).

6. The leakage monitoring device according to claim 1, characterized in that the second conductive member (4) is a soft electrical conductor, and the soft electrical conductor surface is covered with a second insulating layer.

7. The leakage monitoring device according to claim 1, wherein the current detection means (6) is sleeved on the fixing portion (3).

8. The leakage monitoring device according to claim 1, characterized in that at least a part of the fixing portion (3) extends in a direction parallel to a plane in which the switchgear cabinet (1) is placed, and the current detecting means (6) is sleeved on the part.

9. The leakage monitoring device according to any one of claims 1-8, further comprising the current detection means (6).

10. The leakage monitoring device according to claim 9, characterized in that the current detection means (6) is a current transformer or a clamp-on ammeter.

11. Switch cabinet (1), characterized by comprising a leakage monitoring device for a switch cabinet (1) according to any of claims 1-10.

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