CN211236216U - Terminal box convenient to electric energy meter precision check-up - Google Patents

Abstract

The utility model discloses a terminal box convenient to electric energy meter precision check-up, including box body, apron, bottom plate, current wiring end and the voltage wiring end of fixing in the box body, current wiring end and voltage wiring end level are abreast one row to be provided with the clearance between with apron, the bottom plate, the both ends of box body are provided with electric current line passing hole and voltage line passing hole respectively, be provided with through-hole I corresponding with electric current line passing hole position and through-hole II corresponding with voltage line passing hole position on the apron; the cable is welded on the current wiring end and sequentially passes through the current wiring hole and the through hole I to be connected with the current loop socket; and a cable is welded at the voltage connection wire end and sequentially penetrates through the voltage wire passing hole and the through hole II to be connected with the voltage loop socket. The utility model discloses can reduce the experimental wiring process risk of electric energy meter precision, improve the efficiency of electric energy meter precision check-up simultaneously.

Description

Terminal box convenient to electric energy meter precision check-up

Technical Field

The utility model relates to an electric energy metering device technical field particularly, relates to a terminal box convenient to electric energy meter precision check-up.

Background

The electric energy meter junction box is widely used in various fields of power transmission and distribution, and the common electric energy metering junction box is applied to a special distribution box and a special distribution cabinet. The electric energy meter junction box is a device for facilitating the on-line regular on-site calibration of the precision of an electric energy metering instrument, each electric energy meter needs to be electrified and operated at the junction box during calibration, three-phase voltage test wires of the calibration instrument are respectively merged into a voltage loop, three-phase current test wires are respectively connected in series into a current loop, and the electric energy meter junction box is recovered after the calibration is finished.

However, when the junction box of the conventional electric energy meter is connected to a voltage loop and a current loop, the cable is fixed on the terminal of the junction box by using a bolt. In the process of connecting the junction box, original electric wires of a voltage loop and a current loop need to be disconnected, and then a test wire of the electric energy meter and the disconnected electric wires are connected into the junction box. Moreover, when the terminal of the junction box is disassembled and assembled for many times, screw threads on the terminal are easy to slip, and the junction box is damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a terminal box convenient to electric energy meter precision check-up, it can reduce the experimental wiring process risk of electric energy meter precision, improves the efficiency of electric energy meter precision check-up simultaneously.

Another object of the present invention includes providing a junction box for facilitating the precision calibration of an electric energy meter,

the embodiment of the utility model discloses a realize through following technical scheme:

a junction box convenient for precision calibration of an electric energy meter comprises a box body, a cover plate, a bottom plate, a current wiring terminal and a voltage wiring terminal which are fixed in the box body, wherein the current wiring terminal and the voltage wiring terminal are horizontally arranged in a row, gaps are arranged between the current wiring terminal and the cover plate and between the current wiring terminal and the bottom plate, two ends of the box body are respectively provided with a current wiring hole and a voltage wiring hole, and the cover plate is provided with a through hole I corresponding to the current wiring hole and a through hole II corresponding to the voltage wiring hole;

the cable is welded on the current wiring end and sequentially passes through the current wiring hole and the through hole I to be connected with the current loop socket; and a cable is welded at the voltage connection wire end and sequentially penetrates through the voltage wire passing hole and the through hole II to be connected with the voltage loop socket.

In one embodiment, the box body is cuboid, the outer parts of two long edges of the box body are respectively provided with a wire inlet pipe, the wire inlet pipes on the two long edges are symmetrically distributed, the positions of the wire inlet pipes correspond to the positions of the current terminals, and the number of the wire inlet pipes is matched with the number of the current terminals.

In one embodiment, the inlet conduit is integrally formed with the cartridge body.

In one embodiment, the cover plate and the base plate are fixed to the case by bolts.

In one embodiment, the cable is soldered to the side of the current or voltage terminal facing the backplane.

In one embodiment, the box body, the cover plate and the bottom plate are all made of transparent plastic materials.

In one embodiment, the current and voltage terminals are copper cylinders.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

1. the embodiment of the utility model provides a connect current loop socket, voltage loop socket on the box body, when carrying out the check-up of electric energy meter precision, only need to peg graft voltage loop plug on the electric energy meter on the voltage loop socket of terminal box, peg graft current loop plug on the current loop socket of terminal box, can directly carry out the check-up of electric energy meter, compare with the method that current meter inserts the terminal box, corresponding connection current loop socket, voltage loop socket tied in a bundle respectively with current line, voltage line, adopt socket and plug-in type, convenient and fast when using, safety and high efficiency, need not again to dismantle the cable that inserts voltage loop, current loop on the terminal box, therefore avoided the trouble that voltage loop ground connection, current loop open circuit in the operation process, realized reducing the experimental wiring process risk of electric energy meter precision, improve the purpose of the efficiency of the check-up of electric energy meter precision simultaneously, the problem that screws on the terminal of the junction box are frequently screwed is avoided, the screws slip is avoided, and the service life of the junction box is prolonged.

2. The embodiment of the utility model provides a be provided with the inlet wire pipe of evagination on the box body, make the cable must pass through earlier the inlet wire pipe again with the bolted connection on the terminal, guarantee that the inlet wire mouth of pipe uses the cable that is the complete cable of crust, and the sinle silk is intraductal at the inlet wire, just can avoid other people to steal the electricity.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a front view of a junction box according to an embodiment of the present invention;

fig. 2 is a top view of a terminal block according to an embodiment of the present invention;

fig. 3 is a bottom view of the junction box according to an embodiment of the present invention;

fig. 4 is a rear front view of a terminal block according to an embodiment of the present invention;

FIG. 5 is a front view of a cartridge body according to an embodiment of the present invention;

fig. 6 is a rear view of the box body according to the embodiment of the present invention.

Icon:

1-cover plate, 11-through hole I, 12-through hole II, 2-box body, 21-current wiring hole, 22-voltage wiring hole, 23-wire inlet pipe, 3-current terminal, 4-voltage terminal, 5-bottom plate, 6-current loop socket and 7-voltage loop socket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1 to 6, fig. 1 to 6 provide a junction box convenient for precision verification of an electric energy meter.

A junction box convenient for electric energy meter precision verification comprises a box body 2, a cover plate 1, a bottom plate 5, a current terminal 3 and a voltage terminal 4 which are fixed in the box body 2, wherein the current terminal 3 and the voltage terminal 4 are horizontally arranged in a row, a gap is arranged between the current terminal 3 and the voltage terminal 4 and between the current terminal and the cover plate 1 and between the current terminal and the bottom plate 5, a current wire passing hole 21 and a voltage wire passing hole 22 are respectively arranged at two ends of the box body 2, and a through hole I11 corresponding to the current wire passing hole 21 and a through hole II 12 corresponding to the voltage wire passing hole 22 are arranged on the cover;

the cable-free plug-in box also comprises a current loop socket 6 and a voltage loop socket 7 which are positioned outside the box body 2, wherein a cable is welded on the current wiring terminal 3 and sequentially passes through the current wiring hole 21 and the through hole I11 to be connected with the current loop socket 6; and a cable is welded on the voltage terminal 4 and sequentially passes through the voltage wire passing hole 22 and the through hole II 12 to be connected with the voltage loop socket 7.

In the junction box, the current terminals 3 comprise nine square long copper columns, every three long copper columns are arranged in parallel in one group, each group of current terminals 3 is fixed in one mounting groove, the voltage terminals 4 comprise four groups of copper columns, each group comprises two short copper columns which are arranged in a straight line along the length direction, one group of voltage terminals 4 is used as a starting point, and one group of voltage terminals 4 and one group of current terminals 3 are alternately arranged.

When the electric energy meter precision is checked, in order to reduce the risk of a wiring process of an electric energy meter precision test and improve the efficiency of the electric energy meter precision check, a current wiring hole 21 and a voltage wiring hole 22 are arranged at two ends of a box body 2, meanwhile, a through hole I11 and a through hole II 12 are correspondingly arranged on a cover plate 1, as a current wiring terminal 3 and a voltage wiring terminal 4 are fixed at the middle layer of the box body 2 and a gap is reserved between the current wiring terminal 3 and the voltage wiring terminal 4 and between the cover plate 1 and a bottom plate 5, cables are welded at the bottom surfaces of the current wiring terminal 3 and the voltage wiring terminal 4, namely the cables are welded at one surfaces of the current wiring terminal 3 and the voltage wiring terminal 4 facing the bottom plate 5, then the cables connected with the current wiring terminal 3 are collected to sequentially pass through the current wiring hole 21 and the through hole I11, the cable; and then the cables connected with the voltage wiring terminal 4 are gathered and sequentially pass through the voltage wiring hole 22 and the through hole II 12, and the cable wire ends are positioned outside the box body 2 and connect the voltage loop socket 7 with the cable wire ends.

In addition, the electric energy meter is correspondingly improved, the three-phase voltage test lines of the electric energy meter are collected and connected onto the voltage loop plug, the three-phase current test lines of the electric energy meter are collected and connected onto the current loop plug, the socket and the plug in the embodiment adopt male and female aviation plugs, when the accuracy of the electric energy meter is checked, an operator only needs to plug the voltage loop plug on the electric energy meter into the voltage loop socket 7 of the junction box and plug the current loop plug into the current loop socket 6 of the junction box, the electric energy meter can be directly checked, compared with the existing method that the electric energy meter is connected into the junction box, the current line and the voltage line are respectively connected with the current loop socket and the voltage loop socket in a corresponding and a cluster mode, the plug-in type socket and the plug are adopted, the method is convenient, fast, safe and efficient when the electric energy meter is used, and the voltage loop is not needed, The cable of the current loop avoids the faults of voltage loop grounding and current loop open circuit in the operation process, realizes the purposes of reducing the wiring process risk of the electric energy meter precision test and improving the efficiency of electric energy meter precision check, also avoids frequently twisting the screw on the terminal of the junction box, avoids the problem of screw thread slipping, and prolongs the service life of the junction box.

In one embodiment, the box body 2 is a cuboid, the outer parts of two long sides of the box body 2 are provided with the wire inlet pipes 23, the wire inlet pipes 23 on the two long sides are symmetrically distributed, the positions of the wire inlet pipes 23 correspond to the positions of the current terminals 3, and the number of the wire inlet pipes 23 is matched with the number of the current terminals 3.

Because current loop, voltage loop's cable is in the front through the bolt fastening at current wiring end 3 and voltage wiring end 4, current wiring end 3 and voltage wiring end 4 are close to the one side of apron 1 promptly, when the wiring, need peel off the crust of cable, the fibre core winding that will expose is at the bolt and fixes on current wiring end 3 and voltage wiring end 4, just because the cable will expose the sinle silk, and the length that the sinle silk exposes is still longer, lead to can be at 2 outside thin copper wire twines on the sinle silk that expose of box body, reach the purpose of stealing the electricity.

In order to prevent the emergence of stealing electricity, this technical scheme is provided with the inlet wire pipe 23 of evagination on box body 2, inlet wire pipe 23 sets up on the long edge of box body 2, inlet wire pipe 23 on two long edges of box body 2 is symmetrical about 2 long axes of box body, and inlet wire pipe 23 and 3 one-to-one of electric current wiring end, when inserting electric current return circuit, voltage return circuit like this, the cable must pass through inlet wire pipe 23 earlier again with the bolted connection on the terminal, the cable that guarantees inlet wire pipe 23 mouth and think is all the complete cable of crust, and the sinle silk is in inlet wire pipe 23, just can avoid other people to steal the electricity.

In one embodiment, the inlet conduit 23 is integrally formed with the cartridge body 2.

In one embodiment, the cover plate 1 and the base plate 5 are fixed to the case 2 by bolts.

In one embodiment, the cable is soldered to the side of the current terminal 3 or the voltage terminal 4 facing the bottom plate 5.

In one embodiment, the box body 2, the cover plate 1 and the bottom plate 5 are made of transparent plastic materials.

In one embodiment, the flow terminal 3 and the voltage terminal 4 are both copper cylinders.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a terminal box convenient to electric energy meter precision check-up, includes box body (2), apron (1), bottom plate (5), fixes current wiring end (3) and voltage wiring end (4) in box body (2), and current wiring end (3) and voltage wiring end (4) level are abreast to become one row to with apron (1), be provided with clearance, its characterized in that between bottom plate (5): a current wire passing hole (21) and a voltage wire passing hole (22) are respectively arranged at two ends of the box body (2), and a through hole I (11) corresponding to the current wire passing hole (21) and a through hole II (12) corresponding to the voltage wire passing hole (22) are arranged on the cover plate (1);

the cable is welded on the current wiring terminal (3) and sequentially passes through the current wiring hole (21) and the through hole I (11) to be connected with the current loop socket (6); and cables are welded on the voltage wiring terminals (4) and sequentially penetrate through the voltage wiring holes (22) and the through holes II (12) to be connected with the voltage loop socket (7).

2. The junction box for facilitating accuracy verification of an electric energy meter according to claim 1, wherein: box body (2) are the cuboid form, all are provided with inlet wire pipe (23) in the outside on two long limits of box body (2), and inlet wire pipe (23) symmetric distribution on two long limits, and the position of inlet wire pipe (23) corresponds the position of current wiring end (3), the quantity of inlet wire pipe (23) and the quantity phase-match of current wiring end (3).

3. The junction box for facilitating accuracy verification of an electric energy meter according to claim 2, wherein: the inlet pipe (23) and the box body (2) are integrally formed.

4. The junction box for facilitating accuracy verification of an electric energy meter according to claim 1, wherein: the cover plate (1) and the bottom plate (5) are fixed with the box body (2) through bolts.

5. The junction box for facilitating accuracy verification of an electric energy meter according to claim 1, wherein: the cable is soldered to the side of the current connection (3) or voltage connection (4) facing the base plate (5).

6. The junction box for facilitating accuracy verification of an electric energy meter according to claim 1, wherein: the box body (2), the cover plate (1) and the bottom plate (5) are all made of transparent plastics.

7. The junction box for facilitating accuracy verification of an electric energy meter according to claim 1, wherein: the current terminal (3) and the voltage terminal (4) are both copper cylinders.

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