CN105301296B - Live plug connector of low-voltage metering box - Google Patents
Live plug connector of low-voltage metering box Download PDFInfo
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- CN105301296B CN105301296B CN201510848722.7A CN201510848722A CN105301296B CN 105301296 B CN105301296 B CN 105301296B CN 201510848722 A CN201510848722 A CN 201510848722A CN 105301296 B CN105301296 B CN 105301296B
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Abstract
The invention provides a live plug connector of a low-voltage metering box, which is fixed in the low-voltage metering box and is used for installing an electric energy meter; the connector comprises a connector base with a connector column fixed on the side part, and an insulating protection piece arranged on the connector base; the insulation protection piece comprises an insulation protection body and an insulation protection plate which is connected with the insulation protection body and can be ejected out of the insulation protection body or retracted into the insulation protection body; when the insulation protection plate pops out of the insulation protection body, the connector column body is covered. The technical scheme provided by the invention can be used for carrying out live plugging of the low-voltage metering box connector, is convenient for operators to carry out maintenance, meter replacement and the like without power failure, can effectively reduce inconvenience brought to users by detecting power failure, effectively solves personal safety accidents caused by touching live parts due to error, and can also add a defense for preventing fraudulent use of electricity for the metering box.
Description
Technical Field
The invention relates to a connector, in particular to a low-voltage metering box live plug connector for realizing electric installation of an electric energy meter.
Background
With the rapid improvement of the 'large marketing' system of the national power grid company, the importance of the electricity safety of users is increasing. In the process of continuously developing smart grid technology, a novel connector adopting interference fit is generated. Because the connector adopts an integrated plugging technology, a traditional screw tightening mode is not adopted any more, the working procedures of on-site new installation, replacement and maintenance of the electric energy meter are simplified to a certain extent, but the operation after power failure is still required when on-site working because of the structure without live plugging and related protection measures, and great inconvenience is brought to an electricity consumer; if the plug is forced to be plugged in and plugged out, personal safety risks can be brought.
At present, in the national power grid enterprise standard Q/GDW 11008-2013 technical Specification of Low-voltage metering boxes, the definition and recommended use of interference fit connectors are explicitly proposed, but the hot plugging performance of the connectors is not specified. The interference fit connector also has a great application prospect in the GB7251 low-voltage complete switch equipment series standard. At present, the prior art only relates to the technologies of CN201320420238.0, CN201120077944.0, CN universal breaker capable of being plugged in and out of a controller and CN03210547.9, hot plug structure of a high-frequency switch power supply module, and no related technology specially used for hot plug of an electric energy meter in a low-voltage metering box exists.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a low-voltage metering box hot-plug connector, which can realize the plug of an electric energy meter under the condition of electrification.
The technical scheme provided by the invention is as follows: the plug-in connector is fixed in the low-voltage metering box and is used for installing an electric energy meter; the connector includes a connector base with a connector column fixed to a side portion thereof, the improvement comprising: the connector further includes an insulating shield mounted on the connector base; the insulation protection piece comprises an insulation protection body and an insulation protection plate which is connected with the insulation protection body and can be ejected out of the insulation protection body or retracted into the insulation protection body; when the insulation protection plate pops out of the insulation protection body, the connector column body is covered.
Preferably, the connector base is a cavity cuboid, and slots are respectively arranged on two sides of the top of the connector base; the insulation protection body is a cuboid with the volume adapted to the connector base, and plugs are respectively arranged on two sides of the bottom of the insulation protection body; the plugs on two sides of the insulation protection body are respectively inserted into the slots on two sides of the connector base, so that the insulation protection piece and the connector base are installed and fixed.
Further, the connector columns are vertically fixed at the side parts of the connector base, conductive sheets corresponding to the connector columns are arranged at the top of the connector base, and each connector column is correspondingly and electrically connected with one conductive sheet; screw holes are also formed in the conducting plates; the other side of the connector base is provided with a wire leading-in hole corresponding to the connector column, and an external wire is led into the connector base through the wire leading-in hole and then is electrically connected with the conducting strip through the screw hole.
Further, when the insulation protection body is mounted on the connector base, the bottom outer contour of the insulation protection body coincides with the top outer contour of the connector base.
Preferably, the insulation protection plate is connected with the insulation protection body through an ejection mechanism and can move along a direction parallel to the axis of the connector column; when the insulation protection plate is in a free state, the ejection mechanism ejects the insulation protection plate out of the insulation protection body through ejection force, so that the insulation protection plate covers the connector column body.
Preferably, the electric energy meter is provided with a mounting hole corresponding to the connector column, and the connector column is tightly contacted with the mounting hole in an interference expansion mode so as to fix the electric energy meter and the connector; when the electric energy meter is fixed on the connector, the electric energy meter pushes the insulation protection plate to retract into the insulation protection body, and the friction force between the electric energy meter and the connector cylinder is larger than the elastic force of the ejection mechanism.
Further, the insulation guard also includes a shorting assembly; the short circuit assembly is installed in the insulating protection body and is connected with the insulating protection plate through the linkage mechanism so as to realize joint action between the short circuit assembly and the insulating protection plate: when the insulation protection plate pops out of the insulation protection body, the short circuit assembly is in contact with the conductive sheets, so that the conductive sheets are electrically connected; when the insulation protection plate retreats into the insulation protection body, the short circuit component is separated from the conductive sheet, so that the conductive sheets are electrically isolated.
Further, the connector columns are any one of single-phase connector columns, two-phase connector columns or three-phase connector columns, and each connector column comprises two connector columns; the number of the phases of the conductive sheets is the same as that of the connector columns; each phase of conductive sheet comprises two conductive sheets; the shorting assembly is used for connecting two conductive sheets in the same phase.
Further, the top of the insulation protection body is also provided with an electric energy meter plugging state display piece; the electric energy meter plugging state display piece displays the on state of the electric energy meter by adopting different colors.
Further, the insulating protection plate is made of flame retardant materials.
Compared with the closest prior art, the invention has the following remarkable improvements:
(1) The low-voltage metering box hot plug connector provided by the invention has the advantages that the insulating protection piece is arranged on the connector base for covering the hot exposed connector column body on the connector base, so that the hot plug of the low-voltage metering box connector can be performed, the work such as maintenance and meter replacement can be conveniently performed by operators without power failure, the inconvenience brought to users due to maintenance and power failure can be effectively reduced, and the service level and service quality can be improved.
(2) According to the low-voltage metering box live plug connector provided by the invention, the insulation protection piece is arranged on the connector base and used for covering the live exposed connector column body on the connector base, so that personal safety accidents caused by the fact that live parts are touched due to mistakes can be effectively solved, and meanwhile, the safety of users can be better ensured.
(3) The insulation protection piece provided by the invention has a simple structure, is easy to realize, and can be suitable for connectors of different types.
(4) The low-voltage metering box live plug connector provided by the invention is provided with the insulation protection piece on the connector base, and the insulation protection piece shields the connector base, so that electric energy cannot be obtained from a circuit through an illegal way under the condition of not damaging the electric energy meter or the insulation protection piece, and therefore, electric energy cannot be obtained from the circuit through the illegal way under the condition of not damaging the invention or the electric energy meter, various electricity stealing techniques can be effectively prevented, and a defense is added for the electricity larceny prevention of the metering box.
Drawings
FIG. 1 is a schematic diagram of a hot plug connector of a low-voltage metering box when an electric energy meter is not installed;
fig. 2 is a schematic structural diagram of a plug-in connector of a low-voltage metering box in live plugging when the electric energy meter is installed in the invention;
FIG. 3 is a schematic view of the connector base of FIG. 1;
FIG. 4 is a schematic view of an insulation shield employing a one-piece insulation shield plate;
FIG. 5 is a schematic view of an insulation guard employing separate insulation guard plates;
fig. 6 is a flowchart of a method for installing and removing an electric energy meter on a live plug connector of a low-voltage metering box.
Wherein 1-an insulating protection plate; 2-an insulating protective body; 3-connector base; 4-a wire introduction hole; 5-an electric energy meter plugging state display piece; 6-plug; 7-shorting the assembly; 8-a linkage mechanism; 9-connector columns; 10-slots; 11-conductive sheet.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present invention. It will be apparent that embodiments of the invention may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.
The structure of the low-voltage metering box live plug connector provided by the invention is shown in fig. 1-2, and the connector comprises a connector base 3 with a connector column 9 fixed on the side part and an insulating protection piece arranged on the connector base 3; the insulation protection piece comprises an insulation protection body 2 and an insulation protection plate 1 which is connected with the insulation protection body 2 and can be ejected out of the insulation protection body 2 or retracted into the insulation protection body 2; when the insulation protection plate 1 pops out of the insulation protection body 2, the connector column 9 is covered.
The structure of the connector base is shown in fig. 3: the connector base 3 is a cavity cuboid, and two sides of the top of the connector base are respectively provided with a slot 10.
The structure of the insulation guard is as shown in fig. 4: the insulation protection body 2 is a cuboid with a volume corresponding to the connector base 3, and plugs 6 are respectively arranged on two sides of the bottom of the insulation protection body.
When the insulation protection body 2 is mounted on the connector base 3, the bottom outer contour of the insulation protection body 2 coincides with the top outer contour of the connector base 3.
The slot 10 is used for connecting the insulation protection piece and the connector base 3, and can be embedded or externally hung; the plugs 6 on two sides of the insulation protection body 2 are respectively inserted into the slots 10 on two sides of the connector base 3, so that the insulation protection piece and the connector base 3 are installed and fixed. The structural style of the plug 6 is matched with the slot 10, so that the use of the slot 10 is satisfied.
The connector columns 9 are vertically fixed on the side parts of the connector base 3, conductive sheets 11 corresponding to the connector columns 9 are arranged on the top of the connector base 3, and each connector column 9 is correspondingly and electrically connected with one conductive sheet 11; screw holes are also formed in the conducting strip 11; the other side of the connector base 3 is provided with a wire lead-in hole 4 corresponding to the connector column 9, and an external wire is electrically connected with the conductive sheet 11 through the screw hole after being led into the connector base 3 through the wire lead-in hole 4.
The conductive sheet 11 is used for electrically connecting the connector post 9 with an external wire; no electrical connection is made between the conductive sheets 11; each two conductive strips 11 corresponds to two contacts of the switch for breaking the same phase conductor.
The insulation protection plate 1 is connected with the insulation protection body 2 through an ejection mechanism and can move along the direction parallel to the axis of the connector column 9; when the insulation protection plate 1 is in a free state, the ejection mechanism ejects the insulation protection plate 1 to the outside of the insulation protection body 2 through ejection force, so that the insulation protection plate 1 covers the connector column 9.
The insulating protection plate 1 can be in the form of a whole protection plate as shown in fig. 4, or can be in the form of a single protection plate as shown in fig. 5, so that the use materials of the insulating protection plate can be saved; when the independent protection plates are adopted, each independent protection plate corresponds to one connector column.
The ejection mechanism is used for ejecting the insulation protection plate 1, and can adopt a spring, a spring piece or a similar mechanical structure, the ejection force is not more than 10N, and the ejection mechanism can be used for successfully ejecting the insulation protection plate 1 when the electric energy meter is pulled out.
The connector is fixed in the low-voltage metering box and is used for installing an electric energy meter; the connector base 3 is made of an insulating flame-retardant material and is used for connecting the connector column 9 with an external wire; the connector column 9 and the lead can be electrically connected through the conducting strip 11, and can also be fastened and connected through double-hole screws, single holes, welding, integrated assembly and the like.
The electric energy meter is provided with a mounting hole corresponding to the connector column body 9, the connector column body 9 is tightly contacted with the mounting hole in an interference expansion mode, and can also be tightly contacted with the mounting hole in a clearance fit mode so as to fix the electric energy meter and the connector; when the electric energy meter is fixed on the connector, the electric energy meter pushes the insulation protection plate 1 to retract into the insulation protection body 2, and the friction force between the electric energy meter and the connector cylinder 9 is larger than the elastic force of the ejection mechanism, so that the electric energy meter can be smoothly inserted on the connector.
The insulation guard also includes a shorting assembly 7; the short circuit assembly 7 is installed in the insulation protection body 2 and is connected with the insulation protection plate 1 through a linkage mechanism 8, so that joint action between the short circuit assembly 7 and the insulation protection plate 1 is realized: when the insulation protection plate 1 pops out of the insulation protection body 2, the short circuit assembly 7 contacts with the conductive sheets 11 to realize electrical connection between the conductive sheets 11; when the insulation protection board 1 is retracted into the insulation protection body 2, the shorting assembly 7 is separated from the conductive sheet 11, so that the conductive sheets 11 are electrically isolated.
The connector column 9 is any one of a single-phase connector column 9, a two-phase connector column 9 or a three-phase connector column 9, so as to realize the use requirements of different single-phase, two-phase or three-phase electric energy meters, and each phase connector column 9 comprises two connector columns 9; the number of the phases of the conductive sheets 11 is the same as that of the connector columns 9; each phase of conductive sheet 11 comprises two conductive sheets 11;
the shorting assembly 7 is used for connecting the conductive sheet 11 so as to connect the connector column 9, so that normal electricity consumption of a user is ensured, and the shorting assembly can adopt a form of shorting copper bars or conductive terminals and the like, and the overall impedance is less than 0.1 omega.
As shown in fig. 3, the connector column 9 provided in this embodiment is two-phase connector column 9, and includes four connector columns 9 altogether, when the electric energy meter is not installed, the insulation protection plate 1 is completely ejected, and the two shorting assemblies 7 respectively and reliably connect the connector column 91 with the connector column 92, the connector column 93 with the connector 4 together, so as to ensure that the subscriber line can normally operate; when the electric energy meter is installed, the insulating protection plate 1 completely retreats into the insulating protection body 2 under the pressure of the electric energy meter, the short circuit assembly 7 is separated from the conductor sheet under the transmission of the linkage mechanism 8, and the same-phase lead is electrically connected through the electric energy meter.
The top of the insulation protection body 2 is also provided with an electric energy meter plugging state display piece 5; the electric energy meter plugging state display piece 5 displays the on state of the electric energy meter by adopting different colors.
The insulation protection plate 1 is used for shielding the exposed electrified connector column 9 of the connector, is made of flame-retardant materials and meets the insulation strength requirement, and the structure is applicable to the needs of module retraction and ejection, and the overall size of the insulation protection plate is larger than that of the connector column 9.
The method for installing and detaching the electric energy meter on the low-voltage metering box live plug connector is shown in fig. 6, and comprises the following steps:
(1) The insulation guard is mounted on the connector base 3 and ensures that the dimension of the insulation guard 1 ejected out of the insulation guard is able to completely cover the connector post 9.
(2) The installation holes on the electric energy meter are aligned with the connector columns 9, the electric energy meter is installed, and along with the movement of the electric energy meter, the insulating protection plate 1 is pressed into the insulating protection body 2, and the maximum ejection force of the ejection mechanism is required to be not more than 10N so as not to hinder the pressing of the electric energy meter. When the insulation protection board 1 completely enters the insulation protection body 2 and the shorting assembly 7 leaves the conductive sheet 11 of the connector, the electric energy meter plugging state display member 5 should be displayed as "green".
(3) When the electric energy meter is disassembled, along with the movement of the electric energy meter, the insulating protection plate 1 automatically pops out to push out the insulating protection plate 1 until the connector column 9 is completely shielded, and the popping force of the popping mechanism is required to be enough to push out the insulating protection plate 1 completely so as to prevent the connector column 9 from being completely shielded. When the insulating protection plate 1 is completely ejected and the shorting assembly 7 is normally connected, the display piece 5 of the plugging state of the electric energy meter should be red.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, one skilled in the art may make modifications and equivalents to the specific embodiments of the present invention, and any modifications and equivalents without departing from the spirit and scope of the present invention are within the scope of the claims appended hereto.
Claims (5)
1. The plug-in connector is fixed in the low-voltage metering box and is used for installing an electric energy meter; the connector comprises a connector base with a connector column fixed on the side part, and is characterized in that: the connector further includes an insulating shield mounted on the connector base; the insulation protection piece comprises an insulation protection body and an insulation protection plate which is connected with the insulation protection body and can be ejected out of the insulation protection body or retracted into the insulation protection body; when the insulation protection plate pops out of the insulation protection body, the connector column body is covered;
the connector base is a cavity cuboid, and slots are respectively arranged on two sides of the top of the connector base; the insulation protection body is a cuboid with the volume adapted to the connector base, and plugs are respectively arranged on two sides of the bottom of the insulation protection body; plugs on two sides of the insulation protection body are respectively inserted into slots on two sides of the connector base so as to realize the installation and fixation of the insulation protection piece and the connector base;
the connector columns are vertically fixed on the side parts of the connector base, conductive sheets corresponding to the connector columns are arranged at the top of the connector base, and each connector column is correspondingly and electrically connected with one conductive sheet; screw holes are also formed in the conducting plates; the other side of the connector base is provided with a wire leading-in hole corresponding to the connector column, and an external wire is electrically connected with the conducting strip through the screw hole after being led into the connector base through the wire leading-in hole;
the insulation protection plate is connected with the insulation protection body through an ejection mechanism and can move along the direction parallel to the axis of the connector column; when the insulation protection plate is in a free state, the ejection mechanism ejects the insulation protection plate out of the insulation protection body through ejection force so that the insulation protection plate covers the connector column;
the insulation guard also includes a shorting assembly; the short circuit assembly is installed in the insulating protection body and is connected with the insulating protection plate through the linkage mechanism so as to realize joint action between the short circuit assembly and the insulating protection plate: when the insulation protection plate pops out of the insulation protection body, the short circuit assembly is in contact with the conductive sheets, so that the conductive sheets are electrically connected; when the insulation protection plate retreats into the insulation protection body, the short circuit component is separated from the conductive sheet, so that the conductive sheets are electrically isolated;
the connector columns are any one of single-phase connector columns, two-phase connector columns or three-phase connector columns, and each connector column comprises two connector columns; the number of the phases of the conductive sheets is the same as that of the connector columns; each phase of conductive sheet comprises two conductive sheets; the shorting assembly is used for connecting two conductive sheets in the same phase.
2. The hot plug connector for a low voltage metering box of claim 1, wherein:
when the insulation protection body is mounted on the connector base, the bottom outer contour of the insulation protection body coincides with the top outer contour of the connector base.
3. The hot plug connector for a low voltage metering box of claim 1, wherein:
the electric energy meter is provided with a mounting hole corresponding to the connector column body, and the connector column body is tightly contacted with the mounting hole in an interference expansion mode so as to fix the electric energy meter and the connector; when the electric energy meter is fixed on the connector, the electric energy meter pushes the insulation protection plate to retract into the insulation protection body, and the friction force between the electric energy meter and the connector cylinder is larger than the elastic force of the ejection mechanism.
4. The hot plug connector for a low voltage metering box of claim 1, wherein:
the top of the insulation protection body is also provided with an electric energy meter plugging state display piece; the electric energy meter plugging state display piece displays the on state of the electric energy meter by adopting different colors.
5. The low voltage metering box hot plug connector of any one of claims 1-4, wherein: the insulating protection plate is made of flame-retardant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848722.7A CN105301296B (en) | 2015-11-27 | 2015-11-27 | Live plug connector of low-voltage metering box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848722.7A CN105301296B (en) | 2015-11-27 | 2015-11-27 | Live plug connector of low-voltage metering box |
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| Publication Number | Publication Date |
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| CN105301296A CN105301296A (en) | 2016-02-03 |
| CN105301296B true CN105301296B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510848722.7A Active CN105301296B (en) | 2015-11-27 | 2015-11-27 | Live plug connector of low-voltage metering box |
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Families Citing this family (7)
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| CN106908639A (en) * | 2017-04-28 | 2017-06-30 | 国网江苏省电力公司电力科学研究院 | A kind of intelligent digitalized metering cabinet |
| CN109085398B (en) * | 2018-08-30 | 2021-08-03 | 中国电力科学研究院有限公司 | Multifunctional combined junction box with meter replacing tool for electric energy metering |
| CN109085396B (en) * | 2018-08-30 | 2021-09-17 | 中国电力科学研究院有限公司 | Multifunctional combined junction box with meter replacing tool for electric energy metering |
| CN109085397B (en) * | 2018-08-30 | 2021-08-06 | 中国电力科学研究院有限公司 | Test tool structure for multifunctional combined junction box for electric energy metering |
| CN109085401B (en) * | 2018-08-30 | 2021-08-03 | 中国电力科学研究院有限公司 | Multifunctional combined junction box with test tool for electric energy metering |
| CN110763884B (en) * | 2019-11-26 | 2023-03-17 | 云南电网有限责任公司临沧供电局 | Method for rapidly plugging and unplugging on-load replacement metering device |
| CN116068245B (en) * | 2023-03-07 | 2023-06-09 | 江苏盛德电子仪表有限公司 | Plug-in type electric energy meter |
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| CN105301296A (en) | 2016-02-03 |
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