CN220399487U

CN220399487U - CT self-energy-taking cable grounding circular flow monitoring device

Info

Publication number: CN220399487U
Application number: CN202321703089.9U
Authority: CN
Inventors: 李云; 孔汉辉; 张伟健
Original assignee: Guangzhou Se Technology Ltd
Current assignee: Guangzhou Se Technology Ltd
Priority date: 2023-07-01
Filing date: 2023-07-01
Publication date: 2024-01-26
Anticipated expiration: 2033-07-01

Abstract

The utility model discloses a CT self-energy-taking cable grounding annular flow monitoring device which comprises a shell, an energy-taking unit, a detection unit and a control unit, wherein the shell is annular, the energy-taking unit, the detection unit and the control unit are all arranged in the shell, the energy-taking unit and the detection unit are respectively and electrically connected with the control unit, a plurality of sealing layers are arranged on the inner side of the shell, and two adjacent sealing layers are connected through dry strippable glue; this CT is from getting ability cable grounding circulation monitoring devices through increasing a plurality of layers through the insulating rubber layer that the dry strippable glue is connected in the casing, can peel the insulating rubber layer of suitable layer number according to the cable wire footpath when using, makes this monitoring devices closely press the subsides on power cable, has simplified this monitoring devices's installation for the cable of this device adaptation multiple diameter has improved the commonality of this device.

Description

CT self-energy-taking cable grounding circular flow monitoring device

Technical Field

The utility model relates to the technical field of cable circulation monitoring devices, in particular to a CT self-energy-taking cable grounding circulation monitoring device.

Background

The power cable generally comprises four parts of a wire core, an insulating layer, a shielding layer and a protective layer. The wire core is a conductive part for conveying electric energy and is a main part of the power cable; the insulating layer is used for realizing electric isolation between the wire core and the ground and between the wire cores with different phases. The shielding layer can shield electromagnetic signals in the cable on one hand and can play a certain role in grounding protection on the other hand. The protective layer can avoid the invasion of external impurities and moisture to the power cable, and prevent the external force from directly damaging the power cable.

Because of the existence of induced potential and the grounding of the cable sheath forms a current loop, the cable sheath has a certain magnitude of induced current, namely cable grounding circulation. If the cable sheath is damaged by rats, aged and the like, the cable grounding current is increased due to multi-point contact faults, stolen grounding wires, grounding protector faults and the like, and further the armored metal sheath is heated and deformed to generate gaps, so that cable line accidents are caused. Therefore, monitoring of the cable ground loop is required.

However, in the process of implementing the technical solution of the embodiment of the present application, the present inventors have found that at least the following problems exist in the above-mentioned technology:

the existing cable grounding annular flow monitoring device is fixed in size, an insulating adhesive tape is required to be wrapped on the outer side of a bare wire, foam is required to be wound on the outer side of a cable for fixing the monitoring device when the cable with a smaller wire diameter is used, and the problems of high use limitation and high installation difficulty exist.

Disclosure of Invention

The utility model aims to provide a CT self-energy-taking cable grounding annular flow monitoring device, which solves the technical problems in the background art, and is realized by the following technical scheme:

the utility model provides a CT is from getting cable grounding circulation monitoring devices, includes the casing, gets energy unit, detecting element and control unit, the casing is annular structure, get energy unit, detecting element, control unit all install in the casing, get energy unit, detecting element respectively with control unit electric connection, the casing inboard is provided with a plurality of sealing layers, adjacent two through the strippable adhesion of gluing of dryness between the sealing layer.

Further, the energy taking unit comprises an energy taking coil and an energy taking circuit, the energy taking coil is electrically connected with the energy taking circuit, and the energy taking circuit is electrically connected with the control unit; the detection unit comprises a detection coil and a detection circuit, the detection coil is electrically connected with the detection circuit, and the detection circuit is electrically connected with the control unit.

Further, two annular cavities which are parallel to each other are arranged in the shell, and the energy-taking coil and the detection coil are respectively arranged in the two annular cavities.

Further, the energy-taking coil is a current transformer.

Further, the detection coil is a rogowski coil.

Further, the shell is formed by sequentially connecting and closing at least two shell blocks.

Further, the sealing layer is an insulating rubber layer.

Further, the portable electronic device further comprises a communication unit, wherein the communication unit is installed in the shell and is electrically connected with the control unit.

Further, the communication unit is a wireless communication unit.

The technical scheme provided by the embodiment of the application has at least the following technical effects or advantages:

this CT is from getting ability cable grounding circulation monitoring devices through increasing a plurality of layers through the insulating rubber layer that the dry strippable glue is connected in the casing, can peel the insulating rubber layer of suitable layer number according to the cable wire footpath when using, makes this monitoring devices closely press the subsides on power cable, has simplified this monitoring devices's installation for the cable of this device adaptation multiple diameter has improved the commonality of this device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a circuit logic block diagram of an embodiment of the present application.

The symbols in the drawings are: 1. a housing; 11. an upper housing block; 12. a lower housing block; 13. an annular cavity; 14. a control box; 2. a sealing layer; 3. and (5) drying the strippable glue.

Detailed Description

In order that the manner in which the above recited features of the present utility model can be better understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, a CT self-energy-taking cable grounding annular monitoring device includes a casing 1 with an annular structure, an energy-taking unit, a detecting unit, a control unit and a communication unit, wherein the energy-taking unit, the detecting unit, the control unit and the communication unit are all arranged in the casing, the energy-taking unit, the detecting unit and the communication unit are respectively electrically connected with the control unit, a plurality of sealing layers 2 are arranged on the inner side of the casing 1, two adjacent sealing layers 2 are connected through a dry peelable adhesive 3, and the control unit is a single chip microcomputer or other control components and related circuits.

Specifically, as shown in fig. 3, the energy taking unit includes an energy taking coil and an energy taking circuit, the energy taking coil is a current transformer, the energy taking circuit is in the prior art, the energy taking circuit is specifically an ultra-wide voltage input DC-DC power supply conversion module, the current transformer is electrically connected with the ultra-wide voltage input DC-DC power supply conversion module through a wire, and the ultra-wide voltage input DC-DC power supply conversion module is electrically connected with the control unit through a wire, so that power supply to the control unit is realized.

The detection unit comprises a detection coil and a detection circuit, wherein the detection coil is a Rogowski coil, the detection circuit is of the prior art, a user can configure the detection circuit according to needs, the detection circuit comprises a signal amplifying circuit, a signal detecting circuit and a signal integrating circuit which are connected in series, the Rogowski coil is electrically connected with the detection circuit through a wire, the detection circuit is electrically connected with the control unit through a wire, and the control unit is connected with the communication unit through a wire. The detection coil part transmits the acquired signals to the detection circuit, the signals are transmitted to the control unit after being processed, and the signals are transmitted to the background terminal for processing through the communication unit so as to judge whether the cable grounding loop is abnormal. Preferably, the communication unit is a wireless communication unit, so that heavy wiring work is avoided, the installation difficulty of the detection device is reduced, and a remote wireless communication function is realized.

The structure and principle of CT energy taking and circulation detection are all the prior art, and are not repeated here, and users can select and match according to the needs.

Specifically, the shell 1 is composed of an upper shell block 11 and a lower shell block 12, the upper shell block 11 and the lower shell block 12 are semi-annular, the upper shell block and the lower shell block are connected and involuted to form a complete annular structure, two mutually parallel annular cavities 13 are formed in the inner wall of the annular structure along the circumferential direction, the energy taking coil and the detection coil are respectively arranged in the two annular cavities 13, and epoxy resin is filled between the energy taking coil, the detection coil and the annular cavities 13 so as to avoid water immersion and ensure the service life of the coil. In order to realize the opening and closing design of the shell 1, the energy-taking coil and the detection coil are respectively composed of two semi-annular coils, and two ends of the two semi-annular coils are connected through a contact. The upper shell block 11 is far away from the one end integrated into one piece of lower shell block 12 and has control box 14, and energy taking circuit, detection circuit, control unit, communication unit all set up in control box 14. The shell 1 is made of ABS material, so that the shell has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical performance.

The inner walls of the upper shell block 11 and the lower shell block 12 are respectively glued with a plurality of layers of semi-tubular sealing layers 2, the sealing layer 2 at the lowest layer is adhered to the inner walls of the upper shell block 11 and the lower shell block 12 through epoxy resin, and the other two adjacent sealing layers 2 are connected through dry strippable glue, so that the sealing layers 2 with proper layers can be torn off according to the wire diameter of a cable, the installation of a monitoring device is facilitated, and the sealing layers 2 are preferably insulating rubber layers.

When the monitoring device is used, the sealing layers 2 with different layers are torn off according to the outer diameter of the cable, so that the inner diameter of the monitoring device is matched with the outer diameter of the cable, the upper shell block 11 and the lower shell block 12 are connected through bolts, and the upper shell block and the lower shell block can be combined and fixed by using fixing devices such as buckles, so that the monitoring device is fixed.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a CT is from getting cable grounding circulation monitoring devices, includes the casing, gets energy unit, detecting element and control unit, the casing is annular structure, get energy unit, detecting element, control unit all install in the casing, get energy unit, detecting element respectively with control unit electric connection, its characterized in that: a plurality of sealing layers are arranged on the inner side of the shell, and two adjacent sealing layers are adhered by dry strippable glue.

2. The CT self-energized cable grounding loop monitoring device of claim 1 wherein: the energy taking unit comprises an energy taking coil and an energy taking circuit, the energy taking coil is electrically connected with the energy taking circuit, and the energy taking circuit is electrically connected with the control unit; the detection unit comprises a detection coil and a detection circuit, the detection coil is electrically connected with the detection circuit, and the detection circuit is electrically connected with the control unit.

3. The CT self-energized cable grounding loop monitoring device of claim 2 wherein: the shell is internally provided with two annular cavities which are parallel to each other, and the energy-taking coil and the detection coil are respectively arranged in the two annular cavities.

4. The CT self-energized cable grounding loop monitoring device of claim 2 wherein: the energy-taking coil is a current transformer.

5. The CT self-energized cable grounding loop monitoring device of claim 2 wherein: the detection coil is a rogowski coil.

6. The CT self-energized cable grounding loop monitoring device of claim 1 wherein: the shell is formed by sequentially connecting and involuting at least two shell blocks.

7. The CT self-energized cable grounding loop monitoring device of claim 1 wherein: the sealing layer is an insulating rubber layer.

8. The CT self-energized cable grounding loop monitoring device of claim 1 wherein: the device also comprises a communication unit, wherein the communication unit is arranged in the shell and is electrically connected with the control unit.

9. The CT self-energized cable grounding loop monitoring device of claim 8, wherein: the communication unit is a wireless communication unit.