CN218037297U

CN218037297U - On-spot check-up safety terminal box of three-phase intelligent ammeter

Info

Publication number: CN218037297U
Application number: CN202221997281.9U
Authority: CN
Inventors: 万帅; 杨顺好; 毛单单; 钟林志; 王凯; 钟林峰; 郭婷婷; 陈雪梅; 高世根
Original assignee: Weiyuan Power Supply Branch Of State Grid Sichuan Electric Power Co
Current assignee: Weiyuan Power Supply Branch Of State Grid Sichuan Electric Power Co
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-12-13
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses a three-phase intelligent electric energy meter on-site calibration safety junction box, which relates to the technical field of three-phase intelligent electric energy meter on-site calibration, and comprises an upper insulating plate, wherein a front insulating plate is fixedly arranged on the front side of the upper insulating plate, a lower insulating plate is fixedly arranged at the bottom of the back surface of the front insulating plate, and an elliptical groove, a first hole groove and a second hole groove are respectively arranged at the top of the upper insulating plate; the utility model discloses a terminal box simple structure, small in size, and convenient to carry, and it is convenient with low costs preparation, the problem that can effectual solution team and group meet in the actual work surely, the terminal box wiring is a reform transform to former electric energy meter check-up wiring mode, along with the electric wire netting is intelligent, the development of operation high efficiency, constantly increase to on-the-spot check-up task, this is also for alleviateing intensity of labour, the innovation of improvement work efficiency, the innovation of ammeter check-up safety terminal box wiring mode, the technological improvement degree of difficulty is little, the reality operability is extremely strong, and be convenient for use widely on a large scale.

Description

On-spot check-up safety terminal box of three-phase intelligent ammeter

Technical Field

The utility model relates to a three-phase intelligence electric energy meter field check-up technical field especially relates to a three-phase intelligence electric energy meter field check-up safety terminal box.

Background

The voltage wiring in the original wiring mode of the three-phase electric energy meter on-site verification is four-core sheathed wires, one end of each wire is inserted on a voltage input port of the on-site verification instrument, the other end of each wire is an alligator clamp which is respectively clamped at phase A, phase B, phase C and a zero line end of an electric energy meter terminal button box, the current clamp-shaped meters at the phase A, phase B and phase C ends of the on-site verification instrument are connected with the electric energy meters Ia, ib and Ic current in an access mode, an active pulse wire is mainly a two-core sheathed wire, and the wiring processing is required to be carried out from the on-site verification instrument to the input port of the corresponding pulse; and the other end of the crocodile clip is respectively connected with the active height correction and the public ground of the three-phase electric energy meter.

In the process of carrying out on-site calibration on the three-phase intelligent electric energy meter, the voltage and pulse sampling wiring must use an alligator clip, and if no alligator clip is used for taking the electricity for sampling, the on-site calibration of the electric energy meter cannot be carried out. For a three-phase intelligent electric energy meter needing to be checked, in the wiring process of connecting and disconnecting a field calibrator, an alligator clip is required to be used, but because the distance between tail wiring terminals of the three-phase intelligent meter is small (only an insulating partition plate with the width of about 2mm and the height of 5mm is arranged between the terminals), and the metal tooth mouth opening of the alligator clip is generally more than 10mm, the alligator clip is repeatedly used, so that the three-phase intelligent electric energy meter is easy to generate electric contact and short circuit risks in the wiring process; due to the fact that the gravity of the crocodile clip connecting wire sags, the risk that the wire end falls off can be caused in the process of clamping and connecting the wire, the problems of low quality and time waste are caused, and therefore the problem becomes a direct reason of unsafe factors and the influence on the wire connection efficiency.

In summary, the conventional wiring analysis has the following problems: (1) too many signal lines are easy to collide with each other; (2) The crocodile clip has an overlarge opening, which easily causes an inter-phase short circuit in the tail box of the electric meter; (3) the alligator clip spring relaxes the clip and is easy to fall off; (4) Too many wiring easily causes wrong wiring, so that the efficiency of field verification is low, the safety risk is high, and the time consumption for checking the wiring of the upper table and the lower table of one table is high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a three-phase intelligent ammeter field check safety terminal box has solved the efficiency ratio of the on-the-spot check-up of conventional wiring mode and is lower, and the safety risk is big, makes the technical problem that the table upper and lower surface wiring of every check-up takes time much.

For solving the technical problem, the utility model provides a pair of three-phase intelligence electric energy meter field check safety terminal box, including last insulation board, the front side fixed mounting who goes up the insulation board has preceding insulation board, the bottom fixed mounting at the front insulation board back has insulation board down, elliptical trough, first hole groove and second hole groove have been seted up respectively to the top of going up the insulation board, the electric energy meter set screw has been cup jointed in the inside activity of elliptical trough, the quantity in first hole groove is four, four fixed mounting has A phase voltage end, B phase voltage end, C phase voltage end and zero line end respectively in the inside in first hole groove, the quantity in second hole groove is two, two the equal fixed mounting in inside in second hole groove has the active pulse wiring end.

Preferably, the number of the elliptical grooves is two, and the two elliptical grooves are respectively positioned on two sides of the top of the upper insulating plate.

Preferably, the A-phase voltage end, the B-phase voltage end, the C-phase voltage end, the zero line end and the active pulse wiring end are all composed of a spring thimble and a plug interface, and the top end of the spring thimble is installed at the bottom of the plug interface in a threaded mode.

Preferably, the socket is fixedly installed inside the first hole groove.

Preferably, the bottom end of the spring thimble is a banana plug, and the top end of the socket is a banana socket.

Compared with the prior art, the utility model provides a pair of three-phase intelligent ammeter field check safety terminal box has following beneficial effect:

the utility model provides a safe terminal box of on-spot check-up of three-phase intelligent ammeter, terminal box simple structure, small in size, and convenient to carry, and it is convenient with low costs preparation, the effectual solution team and team of ability meets in the actual work, the terminal box wiring is a reform transform to former ammeter check-up wiring mode, along with the electric wire netting is intelligent, the development of operation high efficiency, constantly increase to on-the-spot check-up task, this is also for alleviateing intensity of labour, improve work efficiency's innovation, the innovation of ammeter check-up safety terminal box wiring mode, the technological improvement degree of difficulty is little, realistic operability is extremely strong, and be convenient for use widely on a large scale.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the overall three-dimensional assembly structure of the present invention.

Reference numbers in the figures: 11. an upper insulating plate; 12. a front insulating plate; 13. a lower insulating plate; 14. an elliptical trough; 15. a first hole groove; 16. a second hole groove; 2. fixing screws of the electric energy meter; 31. an A phase voltage terminal; 32. a B-phase voltage terminal; 33. a C-phase voltage terminal; 34. a zero line end; 35. an active pulse terminal; 36. a spring thimble; 37. and (4) an interface.

Detailed Description

Given by fig. 1-2, the utility model discloses an go up insulation board 11, the front side fixed mounting who goes up insulation board 11 has preceding insulation board 12, the bottom fixed mounting at the front insulation board 12 back has lower insulation board 13, oval groove 14 has been seted up respectively to the top of going up insulation board 11, first hole groove 15 and second hole groove 16, electric energy meter fixed screw 2 has been cup jointed in oval groove 14's inside activity, first hole groove 15's quantity is four, four first hole groove 15's inside is fixed mounting respectively has A phase voltage end 31, B phase voltage end 32, C phase voltage end 33 and zero line end 34, second hole groove 16's quantity is two, two second hole groove 16's inside all fixed mounting has active pulse wiring terminal 35, oval groove 14's quantity is two, be located the both sides at insulation board 11 top respectively, A phase voltage end 31, B phase voltage end 32, C phase voltage end 33, zero line end 34 and active pulse wiring terminal 35 all constitute by spring thimble 36 and interface 37, the bottom thread mounting at socket 37 is in the top of thimble 36, the inside plug of socket 37, banana phase voltage socket 15 is the thimble plug top.

In the embodiment, the positions of the two elliptical grooves 14 correspond to the positions between the jacks in the tail box of the electric energy meter, a terminal box mode is adopted, only the meter cover screws at the tops of the electric energy meter fixing screws 2 need to be screwed in the steps during verification, the steps required by the original wiring mode are reduced, meanwhile, the phenomena that the electric energy meter verification process is influenced by wrong wiring, clamp falling, mutual collision short circuit and the like caused by crocodile clamps in the electric energy meter verification wiring are avoided, the repeated labor and safety risks caused by the wiring mode of manually repeatedly clamping and removing the crocodile clamps are fundamentally solved, the three-phase intelligent electric meter is wired by using a wiring connector wiring mode,

the 'hanging and dismantling' accumulated time is shortened by 62 percent compared with the original wiring mode, the working efficiency is improved, and as shown in table 1, data are measured in different heights, space widths and lighting conditions of an on-pole metering box, an indoor metering cabinet, a box transformer substation and the like.

TABLE 1 comparison table of connection and disconnection steps (unit: s)

The working principle is as follows: the alligator clip replacement that is connected voltage wiring and pulse wiring to electric energy meter on-site calibration appearance and electric energy meter in the design is banana plug, make its voltage and the banana socket phase-match on the pulse interface with the design, and the corresponding plug in the three-phase calibration appearance needs to be connected to banana socket upper end in the structure, and the other end then is connected with electric energy meter tail box three-phase voltage terminal through a plurality of spring thimble 36, when the installation terminal box is fixed to intelligent electric energy meter tail wiring end, a plurality of spring thimble 36 can directly withhold voltage output terminal and pulse function output terminal together, make these both ends form electrical connection closely simultaneously, with this mesh that realizes voltage sampling and pulse output signal sample.

The implementation steps are as follows:

the plug that corresponds in the three-phase check gauge is connected at first to the banana socket upper end of interface 37, then demolish the afterbody of electric energy meter, then place the terminal box on the tail box, through twisting the table lid screw at the top of electric energy meter fixed screw 2, can fix the terminal box, and while fixed, a plurality of spring thimbles 36 can directly withstand voltage output terminal and pulse function output terminal together, make these both ends form close electrical connection simultaneously to this realizes the purpose of voltage sampling and pulse output signal sample.

Claims

1. The utility model provides a three-phase intelligence electric energy meter field check-up safety terminal box, includes upper insulation board (11), its characterized in that: go up insulation board (12) before the front side fixed mounting of insulation board (11), the bottom fixed mounting at the front of insulation board (12) back has lower insulation board (13), oval groove (14), first hole groove (15) and second hole groove (16) have been seted up respectively to the top of going up insulation board (11), electric energy meter fixed screw (2) have been cup jointed in the inside activity of oval groove (14), the quantity of first hole groove (15) is four, four the inside of first hole groove (15) is fixed mounting respectively has A looks voltage end (31), B looks voltage end (32), C looks voltage end (33) and zero line end (34), the quantity of second hole groove (16) is two, two the equal fixed mounting in inside of second hole groove (16) has active pulse terminal (35).

2. The three-phase intelligent electric energy meter field-verification safety junction box as claimed in claim 1, wherein the number of the oval grooves (14) is two, and the two oval grooves are respectively positioned on two sides of the top of the upper insulating plate (11).

3. The three-phase intelligent electric energy meter field verification safety junction box according to claim 1, wherein the A-phase voltage end (31), the B-phase voltage end (32), the C-phase voltage end (33), the zero line end (34) and the active pulse terminal (35) are all composed of a spring thimble (36) and a plug interface (37), and the top end of the spring thimble (36) is installed at the bottom of the plug interface (37) in a threaded manner.

4. The three-phase intelligent electric energy meter field verification safety junction box according to claim 3, wherein the plug interface (37) is fixedly installed inside the first hole groove (15).

5. The three-phase intelligent electric energy meter field verification safety junction box according to claim 3, wherein the bottom end of the spring ejector pin (36) is a banana plug, and the top end of the plug interface (37) is a banana socket.