CN113358907B - Three-phase modularized back-inserted metering device and installation method thereof - Google Patents

Three-phase modularized back-inserted metering device and installation method thereof Download PDF

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Publication number
CN113358907B
CN113358907B CN202110778737.6A CN202110778737A CN113358907B CN 113358907 B CN113358907 B CN 113358907B CN 202110778737 A CN202110778737 A CN 202110778737A CN 113358907 B CN113358907 B CN 113358907B
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China
Prior art keywords
box
metering
bus
plug
socket
Prior art date
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Application number
CN202110778737.6A
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Chinese (zh)
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CN113358907A (en
Inventor
李骏
金家红
胡泳
赵刚
陈建平
叶志军
谢烽
周明
叶海强
吴镇海
谢永海
罗晓静
袁郭竣
周鳌
吴益丰
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.)
Shaoxing Jianyuan Electric Power Group Co ltd
Zhejiang Shuangcheng Electrical Co ltd
Shaoxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
Shaoxing Jianyuan Electric Power Group Co ltd
Zhejiang Shuangcheng Electrical Co ltd
Shaoxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Application filed by Shaoxing Jianyuan Electric Power Group Co ltd, Zhejiang Shuangcheng Electrical Co ltd, Shaoxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical Shaoxing Jianyuan Electric Power Group Co ltd
Priority to CN202110778737.6A priority Critical patent/CN113358907B/en
Publication of CN113358907A publication Critical patent/CN113358907A/en
Application granted granted Critical
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/02Constructional details
    • G01R11/04Housings; Supporting racks; Arrangements of terminals

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

The invention provides a three-phase modularized back-inserted metering device and an installation method thereof, which relate to the technical field of metering boxes and comprise a distribution box and a bus box thereof, a metering box and a bus box thereof, the power distribution box is provided with one, the metering boxes are provided with a plurality of metering boxes, and the metering boxes are connected and communicated with the metering box bus boxes through the back plug structure; the batch meter and the block terminal can be dismantled fixedly and switch on through the structure of inserting on the respective bus-bar box, and batch meter and preceding batch meter can be dismantled fixedly and switch on through the structure of inserting on the respective bus-bar box. The invention realizes the standardization and the universality of products through the modularized design: the existing various multi-position meter boxes are divided into a plurality of modules, so that the standardization of manufacturing and installation is realized, the manufacturing can be completed in factories, and the installation efficiency of on-site workers is improved; is convenient to maintain and replace, and does not affect other users.

Description

Three-phase modularized back-inserted metering device and installation method thereof
Technical Field
The invention relates to a three-phase modularized back-inserted metering device and an installation method thereof, and belongs to the technical field of metering boxes.
Background
The metering box is a necessary environment (condition) for the operation of the electric energy meter, and is used for guaranteeing the reliability and the safety of electricity metering; the batch meter that uses in the existing market has single epitope (stand alone type, case group formula) and many epitope batch meters, its specification is many, and the interchangeability is poor each other. Especially multiple epitopes, complex installation and low efficiency, the construction, operation management and maintenance costs are high, and the site installation needs to be accurately surveyed in advance. The single-meter position box body is difficult to install, replace and maintain, has low modularization degree, and is unfavorable for standardized and refined management of metering work.
Based on this, the present application has been made.
Disclosure of Invention
In order to solve the above-mentioned drawbacks of the prior art, a first object of the present invention is to provide a three-phase modular back-plug metering device, which is fast to install, easy to maintain and replace, does not affect other users, and can replace single epitopes (independent and box-type) and multiple epitopes.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a three-phase modularization back of body inserts metering device, includes block terminal and busbar box, batch meter and busbar box thereof, the block terminal is equipped with one, and the batch meter is equipped with a plurality of, and batch meter busbar box are connected through back of body and are inserted the structure and switch on; the metering box and the distribution box are detachably fixed and communicated through the opposite-inserting structure on each bus box, and the metering box and the previous metering box are detachably fixed and communicated through the opposite-inserting structure on each bus box; the opposite-plug structure comprises a conductive plug-in unit arranged in the metering box bus box and extending out of the front end, an insulating socket I arranged at the rear end of the distribution box bus box and used for plugging the conductive plug-in unit, and an insulating socket II arranged at the rear end of the metering box bus box and used for plugging the conductive plug-in unit; the conductive plug-in unit of the metering box bus box is fixedly connected and conducted with the three-phase four-wire bus of the three-phase conductive bus in the distribution box bus box through a detachable connection node I; the conductive plug-in of the bus box of the latter metering box is fixedly connected and conducted with the conductive plug-in of the bus box of the former metering box through a detachable connection node II; the detachable connection node I is a conductive plug-in unit of a three-phase four-wire bus and a metering box bus box and is detachably fixed; the detachable connection node II comprises an electric connection block, the electric plug-in component of the former metering box bus box is detachably fixed with the front end of the connection block, and the electric plug-in component of the latter metering box bus box is detachably fixed with the rear end of the connection block; the back plug structure comprises a bus box back plug main groove arranged at the back of the measuring box, a male terminal connected with three-phase four-wire branching wires in the measuring box, a male terminal support arranged on the bus box back plug main groove, a female terminal connected with a conductive plug in the measuring box bus box and a female terminal support arranged on the measuring box bus box and used for installing the female terminal; the metering box bus box is arranged in the bus box back-plug total groove, the male terminal support and the female terminal support are detachably and fixedly matched, and the male terminal and the female terminal are connected and matched for conduction.
The invention provides a preferable scheme, wherein an insulating plug-in is arranged at the bottom of the conductive plug-in, and comprises a bottom plate and a plurality of partition plates which are distributed on the bottom plate at intervals; the first insulating socket comprises a first partition board socket positioned at the upper part of the distribution box bus box, a first bottom plate socket positioned at the lower part, and a first conductive plug-in socket positioned between the first partition board socket and the first bottom plate socket; the second insulating socket comprises a second partition plate socket positioned at the upper part of the metering box bus box, a second bottom plate socket positioned at the lower part of the metering box bus box, and a second conductive plug-in socket positioned between the second partition plate socket and the second bottom plate socket; the bottom plate is inserted into a corresponding bottom plate socket I or a corresponding bottom plate socket II, the partition plate is inserted into a corresponding partition plate socket I or a corresponding partition plate socket II, and the conductive plug-in is inserted into a corresponding conductive plug-in socket I or a corresponding conductive plug-in socket II; the conductive plug-in is provided with four metal strips, and each metal strip is separated by a partition board.
The invention provides a preferable scheme, which comprises a distribution box body, a turnover distribution box upper cover rotationally connected with the distribution box body and a distribution box lower cover arranged on the rear side of the distribution box body, wherein the distribution box upper cover is connected with the distribution box body in a rotating way; the upper cover of the distribution box is locked and locked with the distribution box body through a distribution box lock; the metering box comprises a metering box body, a turnover metering box upper cover rotationally connected with the metering box body, and a metering box lower cover arranged at the rear side of the metering box body; the upper cover of the metering box is locked with the metering box body through a metering box lock.
The invention provides a preferable scheme, wherein a transparent window positioned above an electric energy meter is arranged on the upper cover of the metering box; an outlet switch sliding door positioned above the outlet circuit breaker is arranged on the upper cover of the metering box.
The invention provides a preferable scheme, wherein an insulating baffle is arranged between each wire in the three-phase four-wire bus at one position of the detachable connection node.
The invention provides a preferable scheme, and an anti-electricity-theft insulating plate is arranged at the second detachable connection node of the last metering box.
The invention provides a preferable scheme, the back plug structure further comprises a first positioning frame arranged at a second detachable connection node on the bus box of the metering box, a second positioning frame arranged on the periphery of the first positioning frame and the bus terminal support, a first positioning groove which is arranged on the back plug main groove of the bus box and matched with the first positioning frame, and a second positioning groove which is arranged on the back plug main groove of the bus box and matched with the second positioning frame.
The second object of the invention is to provide a method for installing a three-phase modular back-plug metering device, comprising the following steps:
(1) Firstly, fixing a distribution box bus box on a wall surface;
(2) The distribution box body is arranged on a distribution box bus box, and the box body, the distribution box bus box and the wall surface are fixed;
(3) Inserting the assembled metering box bus box into a distribution box bus box;
(4) Fixing the bus box of the metering box with the wall surface, fixing the detachable connection node I, and fixing the electricity larceny prevention insulating plate at the connection node;
(5) Installing an upper cover on the distribution box;
(6) The metering box body is arranged on the metering box bus box, and the box body, the metering box bus box and the wall surface are fixed;
(7) And installing an upper cover for the metering box.
The invention provides a preferable scheme, if a second metering box needs to be temporarily additionally arranged, the method further comprises the following steps after the step (7): removing the electricity larceny prevention insulating plate in the first metering box, inserting the second assembled metering box bus box into the first metering box bus box, fixing the second metering box bus box with the wall surface, fastening the detachable connection node two, and finally mounting the electricity larceny prevention insulating plate detached from the first metering box on the second metering box and mounting an upper cover; the third batch tank and so on.
Compared with the prior art, the invention can realize the following technical effects:
(1) The invention realizes the standardization and the universality of products through the modularized design: the traditional various multi-position meter boxes are divided into a plurality of modules, so that standardization of manufacturing and installation is realized, all parts of the whole device can be manufactured in factories, the field worker installation efficiency is greatly improved, the field installation working intensity is reduced, and the convenience of part interchange is also improved.
(2) The invention is convenient to maintain and replace through the modularized design, and does not affect other users: the batch meter damages can pull out the batch meter from the batch meter busbar box change can, can accomplish to change totally new and go up and not influence other users immediately, consequently can resources are saved, raise the efficiency.
(3) Through the modularized design and layout, the wiring of the wiring harness is more regular, potential safety risks such as wiring harness and the like are effectively reduced, the life safety of users and installation maintenance personnel is ensured, the mass production of wiring can be realized, and the production efficiency is improved.
(4) The metering device has flexible site construction, can be provided with 1 family or multiple families according to the requirement, can be used for fixed capture on site, does not generate insufficient number of households or vacant number of wasted households with multiple epitopes in the prior art, and greatly saves resources.
(5) After the metering device is put into production and widely applied, the bidding variety can be greatly reduced, and the disorder problem of simultaneous occurrence of multiple epitopes and single epitopes in the prior art is avoided.
Drawings
FIG. 1 is a schematic three-dimensional view of a three-phase modular back-inserted metering device according to the present embodiment;
FIG. 2 is a schematic diagram of the structure of the three-phase modular back-plug metering device according to the present embodiment;
FIG. 3 is a schematic diagram of the three-phase modular back-plug metering device of the present embodiment in which the distribution box and metering box are plugged;
Fig. 4 is a schematic diagram of an internal plugging structure of a bus box of a metering box in the three-phase modular back-plugging metering device according to the embodiment;
fig. 5 is a schematic structural diagram of the three-phase modular back-plug metering device of the present embodiment before assembling the metering box and the bus box;
FIG. 6 is a schematic view showing the back structure of a metering box in the three-phase modular back-plug metering device according to the present embodiment;
fig. 7 is an exploded view of a male terminal holder in a three-phase modular back-plug metering device according to this embodiment.
Labeling and describing: the distribution box 1, the distribution box upper cover 11, the distribution box lower cover 12, the distribution box lock 13, the inlet wire knockout hole 14, the three-phase four-wire bus 21, the inlet wire master switch 22, the metering box 3, the metering box upper cover 31, the outlet wire switch sliding door 311, the transparent window 312, the metering box lower cover 32, the metering box lock 33, the outlet wire knockout hole 34, the anti-electricity theft insulation plate 35, the three-phase four-wire branching 41, the inlet wire disconnecting switch 42, the three-phase ammeter 43, the outlet wire breaker 44, the grounding wire 45, the distribution box bus box 5, the detachable connection node one 51, the insulating baffle 52, the conductive plug socket one 53, the partition socket one 54, the base plate socket one 55, the metering box bus box 6, the conductive plug 61, the insulating plug 62, the partition 621, the base plate 622, the conductive plug socket two 63, the partition socket two 64, the base plate socket two 65, the detachable connection node two 66, the conductive connection block 661, the fastening screw 662, the fastening screw 663, the bus box and box nut 71, the wall fixing screw 72, the back plug structure 8, the male terminal support 81, the male terminal 82, the female terminal 84, the female terminal 86, the female terminal one positioning box 86, the positioning box two positioning box one 88, and the bus box positioning box two positioning box one 88.
Detailed Description
In order to make the technical means of the present invention and the technical effects achieved thereby clearer and more complete disclosure, the following embodiments are provided, and the following detailed description is given with reference to the accompanying drawings:
As shown in fig. 1 to 7, the three-phase modularized back-plug type metering device of the embodiment comprises a distribution box and a bus box thereof, a metering box and a bus box thereof, wherein one distribution box is arranged, a plurality of metering boxes are arranged, and the metering box is connected and conducted with the bus box of the metering box through a back-plug structure; the metering box and the distribution box are detachably fixed and communicated through the opposite-inserting structure on each bus box, and the metering box and the previous metering box are detachably fixed and communicated through the opposite-inserting structure on each bus box;
The opposite-plug structure comprises a conductive plug-in unit arranged in the metering box bus box and extending out of the front end, an insulating socket I arranged at the rear end of the distribution box bus box and used for plugging the conductive plug-in unit, and an insulating socket II arranged at the rear end of the metering box bus box and used for plugging the conductive plug-in unit;
The conductive plug-in unit of the measuring box bus box is fixedly connected and conducted with the three-phase four-wire bus of the three-phase conductive bus in the distribution box bus box through a detachable connecting node I; the conductive plug-in of the bus box of the latter metering box is fixedly connected and conducted with the conductive plug-in of the bus box of the former metering box through a detachable connection node II; the detachable connection node I is a conductive plug-in unit of a three-phase four-wire bus and a metering box bus box and is detachably fixed; the detachable connection node II comprises an electric connection block, an electric plug-in component of the former metering box bus box is detachably fixed with the front end of the connection block, and an electric plug-in component of the latter metering box bus box is detachably fixed with the rear end of the connection block;
The back plug structure comprises a bus box back plug main groove arranged on the back of the measuring box, a male terminal connected with three-phase four-wire branching wires in the measuring box, a male terminal support arranged on the bus box back plug main groove, a female terminal connected with a conductive plug in the measuring box bus box, and a female terminal support arranged on the measuring box bus box and used for installing the female terminal; the batch meter busbar box is installed in the busbar box back of body inserts total inslot, and public terminal support can dismantle fixed cooperation with female terminal support, and public terminal and female terminal connect to insert the cooperation and switch on. During installation, the bus box back-plug total groove is integrally provided with the metering box and the bus box, and the male terminal support is inserted onto the female terminal support, so that the male terminal and the female terminal are connected and plugged, and back-plug conduction is realized.
Preferably, the bottom of the conductive insert is provided with an insulating insert, and the insulating insert comprises a bottom plate and a plurality of partition plates distributed on the bottom plate at intervals; the first insulating socket comprises a first partition board socket positioned at the upper part of the distribution box bus box, a first bottom plate socket positioned at the lower part and a first conductive plug socket positioned between the first partition board socket and the first bottom plate socket; the second insulating socket comprises a second partition board socket positioned at the upper part of the bus box of the metering box, a second bottom board socket positioned at the lower part of the bus box and a second conductive plug-in socket positioned between the second partition board socket and the second bottom board socket; the bottom plate is inserted into the corresponding first bottom plate socket or the corresponding second bottom plate socket, the partition plate is inserted into the corresponding first partition plate socket or the corresponding second partition plate socket, and the conductive plug-in is inserted into the corresponding first conductive plug-in socket or the corresponding second conductive plug-in socket; the conductive plug-in is provided with four metal strips, and each metal strip is separated by a partition board.
The insulating plug-in components, electrically conductive plug-in components bellmouth, baffle socket and bottom plate bellmouth that set up contain baffle and bottom plate, the benefit that lies in, during the installation, can avoid making the danger of installer electrocuted because of high voltage breakdown between the electrically conductive plug-in components, when the electrically conductive plug-in components bellmouth of batch meter box busbar box was inserted at first to batch meter busbar box, three-phase four-wire bus or electrically conductive connecting block in the batch meter/batch meter busbar box still have one section safe distance, continue to insert, insulating plug-in components (baffle, bottom plate below the baffle) between the electrically conductive plug-in components begin to insert baffle socket and bottom plate bellmouth this moment, because the distance between electrically conductive plug-in components and the electrically conductive connecting block further shortens, there is the possibility of puncture between every electrically conductive plug-in components, consequently, need the baffle keep apart, prevent to puncture, continue to insert, the bottom plate can no longer be inwards because of length restriction, electrically conductive plug-in with the connecting block contact. The process is finished at one time, the installation is very simple and convenient, and the installation safety is ensured.
In this embodiment, the number of the conductive plug-ins is identical to the number of the three-phase four-wire buses, namely four conductive plug-ins are made of copper, copper bars are formed, and the conductive connection blocks are made of copper.
In this embodiment, preferably, the detachable connection node one includes a three-phase four-wire bus, and the conductive plug-in unit of the metering box bus box is connected and fixed with the three-phase four-wire bus through a set of reserved fastening screws. Because the conductive plug-in components and three-phase four-wire bus have been energized this moment, consequently inconvenient direct hand is put into corresponding hole site with the screw, consequently through reserving the fastening screw, screw up can, can not need rather than direct contact, when improving the installation convenience, has further guaranteed the security.
In this embodiment, preferably, the detachable connection node two includes a conductive connection block, the conductive plug-in unit of the former metering box bus bar box is fixed with the front end of the connection block by a bus fastening screw, and the conductive plug-in unit of the latter metering box bus bar box is detachably fixed with the rear end of the connection block by a bus splicing reserved fastening screw. Through the conductive connection block, the realization of detachable assembly is further facilitated.
Preferably, the distribution box comprises a distribution box body, a turnover distribution box upper cover rotationally connected with the distribution box body and a distribution box lower cover arranged on the rear side of the distribution box body; the upper cover of the distribution box is locked and locked with the distribution box body through a distribution box lock; the metering box comprises a metering box body, a turnover metering box upper cover rotationally connected with the metering box body, and a metering box lower cover arranged at the rear side of the metering box body; the upper cover of the metering box is locked with the metering box body through a metering box lock. Through upper cover and lock, prevent that non-professional from opening and causing the incident, also can prevent to steal the electricity.
Preferably, the upper cover of the metering box is provided with a transparent window above the electric energy meter, so that a user can observe the electricity consumption and the meter reading of a related management unit conveniently; the upper cover of the metering box is provided with an outlet switch sliding door positioned above the outlet circuit breaker, which allows and facilitates opening and closing, allows a user to wire under the condition of not opening the box, and is safe and convenient.
In this embodiment, preferably, an insulating baffle is disposed between each wire in the three-phase four-wire bus at the first detachable connection node, and the three-phase four-wire bus is in a state where the conductors are exposed at the connection node, so that the insulating baffle can prevent the three-phase four-wire bus from breakdown at the connection node, and ensure the safety during installation.
In this embodiment, preferably, the detachable connection node two of the last metering box is provided with an anti-electricity-theft insulation board, and since the conductive plug-in support groove is still provided at the rear end of the terminal box of the last metering box, a person with a heart can steal electricity from the lead extending into the terminal box, and the anti-electricity-theft insulation board is installed at the detachable connection node two, so that the electricity-theft behavior can be avoided.
In the preferred embodiment, a bus box and box body fastening screw hole fixed with a box body of the distribution box is formed in the bus box of the distribution box, and a bus box and box body fastening nut fixed with the box body of the metering box is arranged on the bus box of the metering box; screw holes fixed with the wall surface are formed in the distribution box and the metering box, and wall surface fixing screws can be applied to fix the whole distribution box or the metering box with the wall surface. The arrangement of each screw, each nut and each screw hole is convenient to install, and the integration of the whole metering device after installation and the reliability of wall installation are improved.
The preferred back-inserted structure of this embodiment further includes a first positioning frame installed at the second detachable connection node on the bus box of the metering box, a second positioning frame disposed on the first positioning frame and the periphery of the bus terminal support, a first positioning groove disposed on the back-inserted main groove of the bus box and matched with the first positioning frame, and a second positioning groove disposed on the back-inserted main groove of the bus box and matched with the second positioning frame. The first positioning frame is matched and fixed with the positioning groove, the second positioning frame is matched and fixed with the positioning groove, the back insertion and fixation operation is convenient, and the matching is firm.
In general, the back-inserted structure, the detachable first connecting node and the detachable second connecting node are convenient to carry out modularized assembly according to requirements. During installation, the method mainly comprises the following steps:
(1) The bus box of the distribution box is firstly fixed on the wall surface (wall surface fixing screw),
(2) The distribution box body is arranged on a distribution box bus box (a bus box and box body fastening nut), and the box body, the distribution box bus box and the wall surface are fixed;
(3) The assembled measuring box bus box (the conductive connecting block is fixed with the conductive plug-in unit) is inserted into the distribution box bus box,
(4) Fixing the measuring box bus box with a wall surface (wall surface fixing screws), and fixing a detachable connecting node I (fixing the front end of the conductive plug-in unit with a three-phase four-wire bus in the distribution box bus box);
(5) Installing an upper cover on the distribution box;
(6) The metering box body is arranged on a metering box bus box (a bus box and box body fastening nut), and the box body, the metering box bus box and the wall surface are fixed;
(7) Installing an upper cover on the metering box;
(8) When a second metering box is required to be installed, inserting the second assembled metering box bus box into the first metering box bus box, fixing the second metering box bus box with a wall surface, fastening a detachable connection node II (screwing in a reserved fastening screw to fix the front end of a conductive plug-in unit of the second metering box with a conductive connecting block in the first metering box bus box), and installing an anti-electricity-theft insulating plate at the detachable node II of the metering box;
(9) Installing an upper cover on the second metering box; the installation of a third batch tank and so on.
Compared with the prior art, the beneficial technical effects of this embodiment are:
1. the metering device of the embodiment adopts modularized layout, and is easy to realize batch production.
2. The adoption of the metering device of the embodiment greatly reduces the working intensity of installers, and the number of meter positions can be flexibly spliced on site. Can be used for 1 family or a plurality of families, and can be used for field fixed capture. The resource waste caused by the fact that the number of the tables is vacated due to the fact that the conventional multi-table is not matched with the on-site demand number can not occur.
3. The metering device of the embodiment can completely replace multiple epitopes. The material variety of the signer is greatly reduced, and the variety of the metering box is greatly reduced.
4. The adoption of the metering device of the embodiment ensures that the maintenance and replacement of the metering box of a single user do not affect other users.
5. All the installation inside the metering device can be completed in a factory, the principle that the metering device can be placed on the site as far as possible is followed, the installation efficiency of site workers is greatly improved, the working strength of site installation is reduced, and in addition, the convenience of component exchange is improved.
6. The metering device outlet switch of this embodiment allows for user wiring.
In general, according to the metal three-phase meter example, due to the current weight, 2 workers are required for installation, and a great hidden danger exists in the process of staff ladder climbing alternation, and only about 15 workers can be installed in one day. After the three-phase modularized back-inserted metering device is used, related elements such as the wires in the meter and the like are assembled in place basically without secondary assembly, and the three-phase modularized back-inserted metering device is inserted and screwed in place, and the weight is reduced by 50%. Can be installed fast under emergency, even single operation, 30 or more can be installed a day, and installation effectiveness can promote more than 1 time. The on-site installation efficiency is improved while the integral installation quality is ensured, the transportation and labor cost is greatly reduced, and the working intensity of on-site installation workers is reduced.
The foregoing is a further detailed description of the provided technical solution in connection with the preferred embodiments of the present invention, and it should not be construed that the specific implementation of the present invention is limited to the above description, and it should be understood that several simple deductions or substitutions may be made by those skilled in the art without departing from the spirit of the present invention, and all the embodiments should be considered as falling within the scope of the present invention.

Claims (5)

1. The utility model provides a three-phase modularization back of body inserts metering device, includes block terminal and busbar box, batch meter and busbar box, its characterized in that: the power distribution box is provided with one, the metering boxes are provided with a plurality of metering boxes, and the metering boxes are connected and communicated with the metering box bus boxes through the back plug structure; the metering box and the distribution box are detachably fixed and communicated through the opposite-inserting structure on each bus box, and the metering box and the previous metering box are detachably fixed and communicated through the opposite-inserting structure on each bus box;
The opposite-plug structure comprises a conductive plug-in unit arranged in the metering box bus box and extending out of the front end, an insulating socket I arranged at the rear end of the distribution box bus box and used for plugging the conductive plug-in unit, and an insulating socket II arranged at the rear end of the metering box bus box and used for plugging the conductive plug-in unit;
The conductive plug-in unit of the metering box bus box is fixedly connected and conducted with the three-phase four-wire bus of the three-phase conductive bus in the distribution box bus box through a detachable connection node I; the conductive plug-in of the bus box of the latter metering box is fixedly connected and conducted with the conductive plug-in of the bus box of the former metering box through a detachable connection node II; the detachable connection node I is a conductive plug-in unit of a three-phase four-wire bus and a metering box bus box and is detachably fixed; the detachable connection node II comprises an electric connection block, the electric plug-in component of the former metering box bus box is detachably fixed with the front end of the connection block, and the electric plug-in component of the latter metering box bus box is detachably fixed with the rear end of the connection block;
The back plug structure comprises a bus box back plug main groove arranged at the back of the measuring box, a male terminal connected with three-phase four-wire branching wires in the measuring box, a male terminal support arranged on the bus box back plug main groove, a female terminal connected with a conductive plug in the measuring box bus box and a female terminal support arranged on the measuring box bus box and used for installing the female terminal; the metering box bus box is arranged in the bus box back-plug total groove, the male terminal support is detachably and fixedly matched with the female terminal support, and the male terminal is connected with the female terminal in a plug-in matched manner;
An insulating plug-in is arranged at the bottom of the conductive plug-in, and comprises a bottom plate and a plurality of partition plates distributed on the bottom plate at intervals; the first insulating socket comprises a first partition board socket positioned at the upper part of the distribution box bus box, a first bottom plate socket positioned at the lower part, and a first conductive plug-in socket positioned between the first partition board socket and the first bottom plate socket; the second insulating socket comprises a second partition plate socket positioned at the upper part of the metering box bus box, a second bottom plate socket positioned at the lower part of the metering box bus box, and a second conductive plug-in socket positioned between the second partition plate socket and the second bottom plate socket; the bottom plate is inserted into a corresponding bottom plate socket I or a corresponding bottom plate socket II, the partition plate is inserted into a corresponding partition plate socket I or a corresponding partition plate socket II, and the conductive plug-in is inserted into a corresponding conductive plug-in socket I or a corresponding conductive plug-in socket II; the conductive plug-in is provided with four metal strips, and each metal strip is separated by a partition board;
The back-plug structure further comprises a first positioning frame arranged at the second detachable connection node on the bus box of the metering box, a second positioning frame arranged on the periphery of the first positioning frame and the bus terminal support, a first positioning groove which is arranged on the back-plug main groove of the bus box and matched with the first positioning frame, and a second positioning groove which is arranged on the back-plug main groove of the bus box and matched with the second positioning frame.
2. The three-phase modular back-plug metering device of claim 1, wherein: the power distribution box comprises a power distribution box body, a turnover power distribution box upper cover rotationally connected with the power distribution box body, and a power distribution box lower cover arranged on the rear side of the power distribution box body; the upper cover of the distribution box is locked and locked with the distribution box body through a distribution box lock; the metering box comprises a metering box body, a turnover metering box upper cover rotationally connected with the metering box body, and a metering box lower cover arranged at the rear side of the metering box body; the upper cover of the metering box is locked with the metering box body through a metering box lock.
3. The three-phase modular back-plug metering device of claim 1, wherein: a transparent window positioned above the electric energy meter is arranged on the upper cover of the metering box; an outlet switch sliding door positioned above the outlet circuit breaker is arranged on the upper cover of the metering box.
4. The three-phase modular back-plug metering device of claim 1, wherein: an insulating baffle is arranged between each wire in the three-phase four-wire bus at one position of the detachable connection node.
5. The three-phase modular back-plug metering device of claim 1, wherein: and an anti-electricity-theft insulating plate is arranged at the second detachable connection node of the last metering box.
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CN215833468U (en) * 2021-07-09 2022-02-15 浙江双成电气有限公司 Three-phase modular back-inserted metering device

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CN215833468U (en) * 2021-07-09 2022-02-15 浙江双成电气有限公司 Three-phase modular back-inserted metering device

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