CN210489296U - Protection device for be used for 6KV single core cable - Google Patents
Protection device for be used for 6KV single core cable Download PDFInfo
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- CN210489296U CN210489296U CN201921758057.2U CN201921758057U CN210489296U CN 210489296 U CN210489296 U CN 210489296U CN 201921758057 U CN201921758057 U CN 201921758057U CN 210489296 U CN210489296 U CN 210489296U
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Abstract
The utility model discloses a protector for 6KV single core cable, including single core cable body, single core cable from interior to exterior includes electrically conductive electricity core, internal insulation layer, metallic shield and outer protective layer in proper order, still includes induction-current detection device and alarm device, and induction-current detection device includes ground lead and induction coil, and induction coil's both ends are respectively through ground lead connection metallic shield and electric ground, and alarm device includes control room and warning circuit return circuit, and warning circuit return circuit is connected with induction coil and control room respectively. This kind of a protector for 6KV single core cable detects whether there is the damage in the single core cable through induction-current detection device, when the outer protective layer of single core cable was damaged, induction-current detection device detected the electric current to start alarm device and report to the police, avoid the aggravation of degree of damage, ensure the operation of the safety of power supply network, have the predictability that the harm took place, simple structure, it is simple and convenient to maintain the maintenance, and the practicality is high.
Description
Technical Field
The utility model relates to a cable protection technical field specifically is a protector for 6KV single core cable.
Background
The number of 6KV single-core cables in a power grid system is large, and due to the fact that an insulating layer of the single-core cable is weak and easy to damage, a short circuit is caused after grounding, tripping of a power grid and safety accidents of power equipment are caused, power failure accidents are further caused, and accordingly the loss area is large.
In order to solve the above problems, we propose a protection device for 6KV single-core cables.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a protector for 6KV single core cable, in order to solve above-mentioned technical problem, the utility model provides a following technical scheme:
the utility model relates to a protector for 6KV single core cable, including single core cable body, single core cable from interior to exterior includes electrically conductive electricity core, internal insulation layer, metallic shield layer and outer protective layer in proper order, still includes induction-current detection device and alarm device, induction-current detection device includes ground lead and induction coil, induction coil's both ends are respectively through ground lead connection metallic shield layer and electric ground, alarm device includes control room and warning circuit return circuit, and the warning circuit return circuit is connected with induction coil and control room respectively.
Preferably, the alarm circuit loop comprises a power supply, a switch mechanism and an alarm lamp, the power supply, the switch mechanism and the alarm lamp are connected through wires to form a series circuit loop, the switch mechanism is connected with the induction coil, and the alarm lamp is fixed in the control room.
Preferably, the switch mechanism comprises two metal rods and two metal connectors, wherein the two metal connectors are respectively connected in a circuit between the power supply and the alarm lamp, and the two metal connectors are respectively positioned at two ends of each metal rod and can be contacted with the end part of the corresponding metal rod through a contact.
Preferably, the switch mechanism further comprises a movable iron core, the movable iron core is inserted in the induction coil in a sliding mode, and one end of the movable iron core is vertically and fixedly connected with the middle of the metal rod.
Preferably, the two metal connectors are symmetrically located on two sides of the movable iron core, and the two metal connectors are not connected.
Compared with the prior art, the utility model discloses the beneficial effect who reaches is: whether there is the damage in detecting single core cable through induction-current detection device, when the outer protective layer of single core cable appears damaged, induction-current detection device detects the electric current, and start alarm device reports to the police, make the relevant personnel in the control room obtain the information, and in time handle damaged single core cable, prevent that the inner insulating layer of single core cable from damaging, avoid the aggravation of harm degree, ensure the operation of the safety of power supply network, improve the reliability of the power transmission work of single core cable, the security, and can discover single core cable damage in advance, the predictability that the harm takes place has, whole device simple structure, and easy to realize, maintain and maintain simple and convenient, and the practicality is high.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of an assembly structure of a protection device for a 6KV single core cable of the present invention.
In the figure: 1-a conductive cell; 2-an inner insulating layer; 3-a metal shielding layer; 4-an outer protective layer; 5-a ground lead; 6-an induction coil; 7-electrical ground; 8-a movable iron core; 9-a metal rod; 10-a metal joint; 11-a power supply; 12-a warning light; 13-control room.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Examples
As shown in fig. 1, a protection device for a 6KV single-core cable comprises a single-core cable body, wherein the single-core cable sequentially comprises a conductive electric core 1, an inner insulating layer 2, a metal shielding layer 3 and an outer protective layer 4 from inside to outside, and further comprises an induced current detection device and an alarm device, the induced current detection device comprises a grounding lead 5 and an induction coil 6, two ends of the induction coil 6 are respectively connected with the metal shielding layer 3 and an electric ground 7 through the grounding lead 5, the grounding lead 5 and the electric ground 7 are connected in a point grounding manner, the grounding lead 5 is connected with the metal shielding layer 3 at a power transmission end of the single-core cable body, the alarm device comprises a control room 13 and an alarm circuit, and the alarm circuit is respectively connected with the induction coil 6 and the control room 13.
In this embodiment, the alarm circuit loop includes a power source 11, a switch mechanism and an alarm lamp 12, and the power source 11, the switch mechanism and the alarm lamp 12 are connected by wires to form a series circuit loop, the switch mechanism is connected with the induction coil 6, and the alarm lamp 12 is fixed in a control room 13.
In this embodiment, the switch mechanism includes two metal rods 9 and two metal connectors 10, the two metal connectors 10 are respectively connected in a line between a power source 11 and an alarm lamp 12, and the two metal connectors 10 are respectively located at two ends of the metal rods 9 and can be contacted with the corresponding ends of the metal rods 9 through contacts.
In this embodiment, the switch mechanism further includes a movable iron core 8, the movable iron core 8 is inserted into the induction coil 6 in a sliding manner, and one end of the movable iron core 8 is vertically and fixedly connected to the middle of the metal rod 9.
In this embodiment, the two metal connectors 10 are symmetrically located at two sides of the movable iron core 8, and there is no connection between the two metal connectors 10.
The utility model discloses a principle and advantage: this kind of a protector for 6KV single core cable when carrying out safety protection to single core cable, the principle is as follows:
when the 6KV single-core cable normally works, current flows in the conductive electric core 1, an induced potential is generated in the metal shielding layer 3, and the metal shielding layer 3 does not generate current in the metal shielding layer 3 due to the fact that a one-point grounding mode is adopted in the application, so that the current cannot be detected by the induction coil 6, the electromagnetic effect on the movable iron core 8 cannot be achieved, the alarm device does not work, and the fact that a single-core cable body is normally not damaged is indicated;
when the outer protective layer of the cable is damaged, the inner insulating layer 2 is not damaged at this time, the conductive electric core 1 can still normally work, but at this time, the metal shielding layer 3 forms another grounding point at the damaged point and the original electric ground 7 commonly generate two-point grounding to form an electric conglomeration loop, at this time, current passes through the metal shielding layer 3 under the action of induced electromotive force, and simultaneously current also flows through the grounding lead 5, the induction coil 6 applies electromagnetic induction acting force to the movable iron core 8, so that two ends of the metal rod 9 are respectively contacted with the corresponding metal joints 10, at this time, the alarm circuit loop is communicated, the power supply 11 provides power for the alarm lamp 12, the alarm lamp 12 sends alarm information, so that related personnel in the control room 13 can obtain information, and timely process the damaged single-core cable, prevent the inner insulating layer 2 of the single-core cable from being damaged, and avoid aggravation of the damage degree, the safe operation of the power supply network is ensured, the reliability and the safety of the power transmission work of the single-core cable are improved, the damage of the single-core cable can be found in advance, the predictability of the damage occurrence is realized, the whole device is simple in structure, easy to realize, simple and convenient to maintain and repair, and high in practicability.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a protector for 6KV single core cable, includes single core cable body, single core cable from interior to exterior includes electrically conductive electric core (1), internal insulation layer (2), metallic shield layer (3) and outer protective layer (4) in proper order, its characterized in that: still include induced-current detection device and alarm device, induced-current detection device includes ground lead (5) and induction coil (6), the both ends of induction coil (6) are respectively through ground lead (5) connection metal shielding layer (3) and electric ground (7), alarm device includes control room (13) and warning circuit return circuit, and the warning circuit return circuit is connected with induction coil (6) and control room (13) respectively.
2. A protector for 6KV mono-core cable according to claim 1, characterized in that: the alarm circuit loop comprises a power supply (11), a switch mechanism and an alarm lamp (12), the power supply (11), the switch mechanism and the alarm lamp (12) are connected through electric wires to form a series circuit loop, the switch mechanism is connected with the induction coil (6), and the alarm lamp (12) is fixed in the control room (13).
3. A protector for 6KV mono-core cable according to claim 2, characterized in that: the switch mechanism comprises a metal rod (9) and two metal connectors (10), the two metal connectors (10) are respectively connected to a circuit between a power supply (11) and an alarm lamp (12), and the two metal connectors (10) are respectively located at two ends of the metal rod (9) and can be in contact with the end portions of the corresponding metal rods (9) through contacts.
4. A guard for a 6KV mono-core cable according to claim 3, characterized in that: the switch mechanism further comprises a movable iron core (8), the movable iron core (8) is inserted in the induction coil (6) in a sliding mode, and one end of the movable iron core (8) is vertically and fixedly connected with the middle of the metal rod (9).
5. A protector for 6KV monocable cable according to claim 4, characterised in that: the two metal connectors (10) are symmetrically positioned on two sides of the movable iron core (8), and the two metal connectors (10) are not connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758057.2U CN210489296U (en) | 2019-10-20 | 2019-10-20 | Protection device for be used for 6KV single core cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921758057.2U CN210489296U (en) | 2019-10-20 | 2019-10-20 | Protection device for be used for 6KV single core cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210489296U true CN210489296U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921758057.2U Expired - Fee Related CN210489296U (en) | 2019-10-20 | 2019-10-20 | Protection device for be used for 6KV single core cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN210489296U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542263A (en) * | 2020-10-31 | 2021-03-23 | 无锡卡尔曼导航技术有限公司 | Agricultural machinery cable and automatic testing arrangement thereof |
| CN113236211A (en) * | 2021-06-01 | 2021-08-10 | 西南石油大学 | Device and method for removing water phase trapping damage through underground eddy heat shock of tight reservoir |
-
2019
- 2019-10-20 CN CN201921758057.2U patent/CN210489296U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542263A (en) * | 2020-10-31 | 2021-03-23 | 无锡卡尔曼导航技术有限公司 | Agricultural machinery cable and automatic testing arrangement thereof |
| CN113236211A (en) * | 2021-06-01 | 2021-08-10 | 西南石油大学 | Device and method for removing water phase trapping damage through underground eddy heat shock of tight reservoir |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |