CN111613975A - High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit - Google Patents

High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit Download PDF

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Publication number
CN111613975A
CN111613975A CN202010581338.6A CN202010581338A CN111613975A CN 111613975 A CN111613975 A CN 111613975A CN 202010581338 A CN202010581338 A CN 202010581338A CN 111613975 A CN111613975 A CN 111613975A
Authority
CN
China
Prior art keywords
load conversion
main unit
ring main
connecting sleeve
conversion connecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010581338.6A
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Chinese (zh)
Inventor
赖安定
苏志耀
张金春
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Hongke Electric Power Technology Co ltd
Original Assignee
Fujian Hongke Electric Power Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Hongke Electric Power Technology Co ltd filed Critical Fujian Hongke Electric Power Technology Co ltd
Priority to CN202010581338.6A priority Critical patent/CN111613975A/en
Publication of CN111613975A publication Critical patent/CN111613975A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/14Shutters or guards for preventing access to contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/56Insulating bodies
    • H01B17/58Tubes, sleeves, beads, or bobbins through which the conductor passes
    • H01B17/583Grommets; Bushings

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The utility model provides a high voltage isolation device of reserve looped netowrk cabinet cable business turn over line post, includes load conversion adapter sleeve and insulating end cap, the front end of load conversion adapter sleeve cup joints on the outer wall of looped netowrk cabinet business turn over line post, and the rear end of load conversion adapter sleeve extends to the outside of wiring screw rod, insulating end cap cup joint in inside the rear end of load conversion adapter sleeve, this insulating end cap with the wiring screw rod is connected. The high-voltage isolation device adopts the load conversion connecting sleeve to replace the existing T-shaped insulating sleeve, the front end of the load conversion connecting sleeve is sleeved with the ring main unit inlet and outlet wire column, the rear end of the load conversion connecting sleeve is provided with only one opening, and then the insulating plug is connected with the wiring screw rod to plug the opening at the rear end of the load conversion connecting sleeve so as to isolate and shield the high voltage of the ring main unit inlet and outlet wire column.

Description

High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a high-voltage isolation device for a cable inlet and outlet wire column of a standby ring main unit.
Background
The ring main unit is a general name of a load switch cabinet and a combined electrical appliance cabinet applied to a ring main power supply unit, has the functions of flexibly matching and combining according to different electrical appliance wiring, realizing ring main power supply and electric energy distribution with different functions, and has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like.
The ring main unit is mainly applied to buildings such as industrial enterprises, public institutions, markets, residential districts and the like, and power distribution places of the buildings are generally arranged in basements and are generally provided with a plurality of ring main units. Some ring main units are connected with cables for use; and some of the ring main units are used as standby units of later-stage construction projects or directly replaced and used for preventing damage. For such a standby ring main unit, the cable needs to be connected to the high-voltage bus in advance when the power distribution site is constructed, so that the cable inlet/outlet column of the standby ring main unit can carry high voltage. Therefore, high-voltage isolation processing needs to be performed on the cable inlet and outlet posts of the standby ring main unit.
A cable inlet and outlet line column of the existing ring main unit is fixedly connected with a wiring screw rod, and a T-shaped insulating sleeve which covers the wiring screw rod inside is further installed at the cable inlet and outlet line column. When a cable needs to be connected, a wiring copper bar of the cable penetrates from the bottom of the T-shaped insulating sleeve and is connected with the cable inlet and outlet post through a wiring screw, and then an insulating plug is installed at an opening on the side surface of the T-shaped insulating sleeve to seal the T-shaped insulating sleeve. For the standby ring main unit, namely when the cable is not connected, an insulating plug is required to be installed at an opening in the side wall of the T-shaped insulating sleeve, an insulating plugging device is required to be produced by simulating the structure of the cable and a wiring copper bar of the cable, and the lower space of the T-shaped insulating sleeve is plugged so as to isolate the high voltage at the connecting screw inside the insulating sleeve. The high-voltage isolation mode not only is difficult to completely block the lower space of the T-shaped insulating sleeve, but also has poor high-voltage isolation effect and high production cost of the insulating block device. Therefore, the high-voltage isolation device for the cable inlet and outlet wire column of the standby ring main unit is provided.
Disclosure of Invention
The invention provides a high-voltage isolation device for a cable inlet and outlet wire column of a standby ring main unit, which aims to solve the defects that when the existing standby ring main unit is not connected with a cable, the structure of the cable and a wiring copper bar thereof needs to be simulated for plugging an opening at the bottom of a T-shaped insulating sleeve, the high-voltage isolation effect is poor, the production cost is increased, and the like.
The invention adopts the following technical scheme:
the utility model provides a high voltage isolation device of reserve looped netowrk cabinet cable business turn over line post, includes load conversion adapter sleeve and insulating end cap, the front end of load conversion adapter sleeve cup joints on the outer wall of looped netowrk cabinet business turn over line post, and the rear end of load conversion adapter sleeve extends to the outside of wiring screw rod, insulating end cap cup joint in inside the rear end of load conversion adapter sleeve, this insulating end cap with the wiring screw rod is connected.
Furthermore, a convex ring is formed on the inner side wall of the load conversion connecting sleeve, a distance is reserved between the inner side wall of the convex ring and the side wall of the front end of the ring main unit incoming and outgoing line column, and the inner side wall of the insulating plug abuts against the outer side wall of the convex ring.
Furthermore, a hood is further sleeved outside the rear end head of the load conversion connecting sleeve.
Further, the insulating plug is a plug sensor.
Furthermore, the load conversion connecting sleeve is integrally cast and molded by epoxy resin.
Furthermore, the inner side wall of the front end of the load conversion connecting sleeve is provided with a taper angle matched with the outer side wall of the ring main unit wire inlet and outlet column.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
1. the high-voltage isolation device adopts the load conversion connecting sleeve to replace the existing T-shaped insulating sleeve, the front end of the load conversion connecting sleeve is sleeved with the ring main unit inlet and outlet wire column, the rear end of the load conversion connecting sleeve is provided with only one opening, and then the insulating plug is connected with the wiring screw rod to plug the opening at the rear end of the load conversion connecting sleeve so as to isolate and shield the high voltage of the ring main unit inlet and outlet wire column.
2. The insulating plug is in a plug sensor structure, and the plug sensor can be used for high-voltage isolation of an incoming and outgoing line column of a ring main unit, can also be used for collecting voltage or current data of a bus, and is convenient for detection of voltage or current of the ring main unit under the condition that other buses are connected.
Drawings
Fig. 1 is an assembly schematic of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below in order to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details. Well-known components, methods and processes are not described in detail below.
A high-voltage isolation device for a cable inlet and outlet column of a standby ring main unit refers to fig. 1 and 2 and comprises a load conversion connecting sleeve 10, an insulating plug 20 and a hood 30. The inner side wall of the front end of the load conversion connecting sleeve 10 is provided with a taper angle matched with the outer side wall of the ring main unit inlet and outlet line column 1, the front end of the load conversion connecting sleeve 10 is sleeved on the outer wall of the ring main unit inlet and outlet line column 1, and the middle part of the front end of the ring main unit inlet and outlet line 1 column is fixedly provided with a wiring screw rod 2. The rear end of the load conversion coupling sleeve 10 extends to the outside of the terminal screw 2. The insulation plug 20 is sleeved inside the rear end of the load conversion connecting sleeve 10, and an internal threaded hole connected with the wiring screw rod 2 is formed in the center of the inner side wall of the insulation plug 20.
Referring to fig. 2 and 3, a convex ring 11 is formed on the inner side wall of the load conversion connecting sleeve 10, and a space is formed between the inner side wall of the convex ring 11 and the side wall of the front end of the ring main unit inlet/outlet post 1, so as to ensure that the load conversion connecting sleeve 10 can move along the direction of the ring main unit inlet/outlet post 1. And the inside wall of the insulating plug 20 is abutted against the outside wall of the convex ring 11, when the insulating plug 20 rotates and moves inwards, because the insulating plug 20 is abutted against the outside wall of the convex ring 11, and a gap is formed between the inside wall of the convex ring 11 and the ring main unit incoming and outgoing line column 1, the insulating plug 20 can push the convex ring 11 to move inwards, namely push the front end inner wall of the whole load conversion connecting sleeve 10 to move along the outside wall direction of the ring main unit incoming and outgoing line column. Therefore, the insulating plug 20 not only shields the high voltage of the wiring screw, but also enables the load conversion connecting sleeve to be tightly connected to the inlet and outlet wire columns of the ring main unit.
Referring to fig. 2, the insulating plug 20 may be a plug sensor, and the plug sensor may be used for high voltage isolation of an incoming/outgoing line column of the ring main unit, and may also be used for collecting voltage or current data of a bus, so as to facilitate detection of voltage or current of the ring main unit when other buses are connected.
Referring to fig. 2 and 3, the hood 30 is fitted over the rear end of the load transfer sleeve 10 to close the rear end of the load transfer sleeve.
The load conversion connecting sleeve 10 and the insulating plug 20 can be integrally molded by casting epoxy resin.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims (6)

1. The utility model provides a high voltage isolator of reserve looped netowrk cabinet cable business turn over line post which characterized in that: the load conversion connecting sleeve comprises a load conversion connecting sleeve and an insulating plug, wherein the front end of the load conversion connecting sleeve is sleeved on the outer wall of an incoming and outgoing line column of the ring main unit, the rear end of the load conversion connecting sleeve extends to the outside of a wiring screw rod, the insulating plug is sleeved inside the rear end of the load conversion connecting sleeve, and the insulating plug is connected with the wiring screw rod.
2. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: a convex ring is formed on the inner side wall of the load conversion connecting sleeve, a distance is reserved between the inner side wall of the convex ring and the side wall of the front end of the ring main unit incoming and outgoing line column, and the inner side wall of the insulating plug abuts against the outer side wall of the convex ring.
3. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: and a hood is further sleeved outside the rear end head of the load conversion connecting sleeve.
4. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: the insulating plug is a plug sensor.
5. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: the load conversion connecting sleeve is integrally cast and molded by epoxy resin.
6. The high voltage isolation device for the cable inlet and outlet column of the ring main unit as claimed in claim 1, wherein: the inner side wall of the front end of the load conversion connecting sleeve is provided with a taper angle matched with the outer side wall of the ring main unit incoming and outgoing line column.
CN202010581338.6A 2020-06-23 2020-06-23 High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit Pending CN111613975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010581338.6A CN111613975A (en) 2020-06-23 2020-06-23 High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010581338.6A CN111613975A (en) 2020-06-23 2020-06-23 High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit

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CN111613975A true CN111613975A (en) 2020-09-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112467595A (en) * 2020-11-05 2021-03-09 深圳供电局有限公司 Ring main unit and ring main unit replacement method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002152963A (en) * 2000-11-15 2002-05-24 Fujikura Ltd Termination member for apparatus direct-connection type terminal joint
CN101478086A (en) * 2009-01-21 2009-07-08 北京合锐赛尔电力科技有限公司 Insulation protective cover
CN203445433U (en) * 2013-11-15 2014-02-19 国网山东省电力公司青岛供电公司 American ring main unit with insulation protective cover
CN204115908U (en) * 2014-08-05 2015-01-21 铜仁供电局 Intelligent temperature measurement ring main unit
CN204271405U (en) * 2014-10-17 2015-04-15 广东电网有限责任公司佛山供电局 Splices cable device
CN212136895U (en) * 2020-06-23 2020-12-11 福建省宏科电力科技有限公司 High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002152963A (en) * 2000-11-15 2002-05-24 Fujikura Ltd Termination member for apparatus direct-connection type terminal joint
CN101478086A (en) * 2009-01-21 2009-07-08 北京合锐赛尔电力科技有限公司 Insulation protective cover
CN203445433U (en) * 2013-11-15 2014-02-19 国网山东省电力公司青岛供电公司 American ring main unit with insulation protective cover
CN204115908U (en) * 2014-08-05 2015-01-21 铜仁供电局 Intelligent temperature measurement ring main unit
CN204271405U (en) * 2014-10-17 2015-04-15 广东电网有限责任公司佛山供电局 Splices cable device
CN212136895U (en) * 2020-06-23 2020-12-11 福建省宏科电力科技有限公司 High-voltage isolation device for cable inlet and outlet wire column of standby ring main unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112467595A (en) * 2020-11-05 2021-03-09 深圳供电局有限公司 Ring main unit and ring main unit replacement method

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