CN216904168U - Lightning protection metering junction box capable of preventing misoperation - Google Patents

Abstract

The utility model discloses a lightning protection metering junction box capable of preventing misoperation, which comprises a box body, a box cover, a double-throw switch, a grounding network terminal and a lightning protection module, wherein the double-throw switch comprises an overhauling work position communicated with the grounding network terminal and a lightning protection work position communicated with the lightning protection module, a jack is arranged on the box cover, a limiting block and a reset spring used for driving the limiting block to be inserted into the jack are arranged on the box body, and a handle of the double-throw switch is pulled to the overhauling work position from the lightning protection work position to drive the limiting block to be pulled out of the jack. By applying the double-throw switch, a maintainer must pull the double-throw switch to a maintenance working position before opening the box cover for maintenance, so that the corresponding potential safety hazard is fundamentally avoided.

Description

Lightning protection metering junction box capable of preventing misoperation

Technical Field

The utility model belongs to the field of power equipment, and particularly relates to a lightning protection metering junction box capable of preventing misoperation.

Background

Under the condition that the smart power grid is continuously popularized, the collection of the electric energy information is very important, the electric energy metering devices are distributed in each link of the power system, such as a voltage transformer, a current transformer, a smart electric meter and the like, the metering devices are used for metering various electric energy data in the power grid, data support is provided for the reliable operation of the power grid, real-time power utilization data are provided for power companies, and technical support is provided for power utilization enterprises to know the self power utilization conditions and guarantee the operation of the smart power grid. Along with the acceleration of the intelligent development of a power grid, the electric energy metering device is more miniaturized and more refined, and is more easily influenced by disturbance, and when the electric energy metering device is struck by lightning or suffers from lightning surge current, because the junction box has no lightning protection function, the faults of equipment damage, incapability of metering and the like are easily caused. Consequently, the measurement terminal box that has the lightning protection function has appeared on the market, and its inside surge lightning protection device that is equipped with can play the effect of lightning protection to the junction box at the during operation, guarantees that terminal box equipment is not damaged.

Because the lightning protection module with the lightning protection function is arranged, the lightning protection module is connected with the three wiring terminals of the three-phase circuit when in normal operation, however, when the junction box needs to be overhauled or the lightning protection module needs to be replaced and overhauled, the three-phase line needs to be switched to the ground so as to prevent the overhauling workers from generating electric shock risks by mistake, therefore, this type of lightning protection junction box is generally further provided with a grounding grid terminal for connecting and conducting to a grounding grid and a three-pole-double-throw switch, wherein one side of the three-pole double-throw switch is respectively connected with three wiring terminals of a three-phase circuit, the other two sides of the three-pole double-throw switch are respectively connected with a lightning protection module and a grounding grid terminal, thus, the lightning protection module or the grounding network terminal can be switched to be respectively conducted with the three-phase circuit by pulling the three-pole double-throw switch, thereby facilitating the switching of the maintenance personnel to the maintenance working position of the grounding protection during maintenance to ensure the safety, after the maintenance, the junction box is switched to a lightning protection working position with a lightning protection function so that the junction box has the lightning protection function during working. However, in practice, due to the carelessness of the operator, the following unsafe behaviors may occur: when the maintenance is needed, the double-throw switch is forgotten to be pulled to a maintenance working position, so that the electric shock danger exists in the maintenance process; forget to pull the double-throw switch to the lightning protection working position after the overhaul is finished, and the junction box does not have the lightning protection function during working.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lightning protection metering junction box capable of preventing misoperation, and the lightning protection metering junction box can effectively solve the problem that potential safety hazards exist due to the fact that a worker probably forgets to pull a double-throw switch to a maintenance working position during maintenance in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a can prevent lightning protection measurement terminal box of maloperation, includes box body, lid, double throw switch, ground net terminal and lightning protection module, the double throw switch includes the lightning protection work position that switches on with the ground net terminal and switch on with the lightning protection module, be equipped with the jack on the lid, be equipped with the stopper on the box body and be used for driving the reset spring that the stopper inserted the jack, pull the handle of double throw switch to the maintenance work position by the lightning protection work position and be used for driving the stopper and deviate from the jack.

Preferably, be equipped with the rectangular hole on the box body lateral wall, stopper sliding connection is in the rectangular hole, be equipped with the open slot that communicates with the rectangular hole on the box body inner wall of rectangular hole below, it is equipped with the slider to slide in the open slot, slider and stopper fixed connection, reset spring locates between slider and the open slot inner wall, and the double-throw switch is pulled the in-process to the maintenance work position by lightning protection work position, the handle drives the stopper through the extrusion slider and slides. When pulling the handle like this, through handle extrusion slider, the slider drives the stopper along the open slot slip in-process along the open slot, until the stopper deviate from the jack, the box cover can be opened to the box body relatively.

Preferably, the handle is arranged on the front side surface of the box body, the handle swings left and right, the end part of the sliding block extends forwards out of the side wall of the box body, and the end part of the sliding block is used for being abutted to the handle. The double-throw switch of present terminal box product generally all locates the handle on the box body front side surface, the operation of being convenient for, consequently according to present operation custom, on corresponding locating the box body lateral wall with the slider to the tip of slider stretches out the box body lateral wall and is used for with the handle butt, accords with user's operation custom.

Preferably, the end of the slider is provided with a guide slope for abutting against the handle. The handle is swing motion in the pulling process, the handle has oblique extrusion force on the sliding block, and the sliding of the sliding block can be smoother by arranging the guide inclined plane, so that the sliding block is prevented from being locked.

Preferably, the lid passes through buckle subassembly joint with the box body, the length of stopper is greater than the thickness of box body lateral wall, when the double-throw switch is located maintenance work position, the one end of stopper stretches out the box body and is used for preventing the buckle subassembly joint. Like this at the maintainer after accomplishing maintenance work, if want to stabilize the joint with lid and box body through the buckle subassembly, just need pull double-throw switch to lightning protection work position earlier, slide through reset spring drive stopper and get into in the jack, just can make the stopper stretch out the one end of box body and slide into the rectangular channel, and then just can realize the joint of buckle subassembly. After the overhaul work is finished, the overhaul personnel can be forced to pull the double-throw switch to the lightning protection working position, and the corresponding potential safety hazard is fundamentally avoided.

Preferably, the buckle assembly comprises a plastic clamping ring and a clamping block, the plastic clamping ring is arranged on the box cover, and the clamping block is arranged on the box body below the rectangular hole. When one end of the limiting block extends out of the box body, the clamping block is arranged below the rectangular hole, and the end, extending out of the box body, of the limiting block prevents the plastic clamping ring from being clamped on the clamping block.

Preferably, the open slot is an L-shaped slot, and the rectangular hole is formed in the middle of the side wall of the box body along the front-back direction. The clamping block can be correspondingly arranged in the middle of the box body, and the plastic clamping ring is arranged in the middle of the box cover, so that the use habit is met.

Preferably, the box body is cuboid, and a wire inlet and a wire outlet are formed in the box body. The terminal box is convenient to connect with the lead.

Preferably, four corners of the lower part of the box body are provided with mounting support legs. The installation of the junction box is convenient.

Compared with the prior art, the utility model has the following beneficial effects: through set up the jack on the lid, set up the stopper on the box body, and the handle of double-throw switch can pull the in-process drive stopper by lightning protection work position to maintenance work position and deviate from the jack, like this the maintainer when needing to overhaul the junction box, just need pull double-throw switch earlier to maintenance work position, just so can open the lid, thereby can force the maintainer through the setting of stopper and pull double-throw switch to maintenance work position before opening the lid and carrying out inside maintenance, fundamentally stops corresponding potential safety hazard.

Drawings

FIG. 1 is a schematic structural diagram of a lightning protection metering junction box capable of preventing misoperation according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged schematic view of portion C of FIG. 1;

FIG. 5 is a cross-sectional view of the side wall of the case in the horizontal direction when the double-throw switch is in the lightning protection operating position;

FIG. 6 is a cross-sectional view of the side wall of the case in a horizontal orientation with the double throw switch in the service position in the embodiment;

fig. 7 is a front view of the inner surface of the side wall of the box body in the embodiment.

Wherein: 1. the novel box comprises a box body, 10 rectangular holes, 11 open slots, 2 box covers, 20 jacks, 3 double-throw switches, 30 handles, 4 limiting blocks, 5 return springs, 6 sliding blocks, 60 guide inclined planes, 7 plastic clamping rings and 8 clamping blocks.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected or detachably connected or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; may be directly connected or indirectly connected through an intermediate, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example (b): as shown in fig. 1 to 7, the lightning protection metering junction box capable of preventing misoperation in this embodiment includes a box body 1, a box cover 2, a double-throw switch 3, a ground net terminal and a lightning protection module, wherein the double-throw switch 3 includes an overhaul work site conducting with the ground net terminal and a lightning protection work site conducting with the lightning protection module, specifically, the double-throw switch 3 is a three-pole double-throw switch, one side of the double-throw switch 3 is respectively connected with three terminals of a three-phase line, and the other two sides are respectively connected with the lightning protection module and the ground net terminal, so that the lightning protection module or the ground net terminal can be switched to conduct with the three-phase line by pulling the double-throw switch 3, thereby facilitating the overhaul personnel to switch to the overhaul work site of the ground protection to ensure safety during overhaul, and switch to the lightning protection work site with the lightning protection function after overhaul to make the junction box have the lightning protection function during working, the above-mentioned technology of switching the work site mode by the double-throw switch belongs to the existing junction box technology, and will not be described in detail herein. Still be equipped with jack 20 on lid 2 in this embodiment, be equipped with stopper 4 and be used for driving stopper 4 to insert reset spring 5 of jack 20 on box body 1, pulling double throw switch 3 in-process to the maintenance work position by lightning protection work position, double throw switch 3's handle 30 does the swing action, and handle 30 can drive stopper 4 and deviate from jack 20 in the swing in-process. This terminal box that this embodiment provided, through set up jack 20 on lid 2, set up stopper 4 on box body 1, and double throw switch 3's handle 30 can pull in-process drive stopper 4 and deviate from jack 20 to maintenance work position by lightning protection work position, maintainer is when needing to overhaul the terminal box like this, just need pull double throw switch 3 to maintenance work position earlier, just so can open lid 2, thereby can force maintainer through stopper 4's setting and must pull double throw switch 3 to maintenance work position before opening lid 2 and carrying out inside maintenance, fundamentally stops corresponding potential safety hazard.

Specifically, combine and show in fig. 5 to 7, be equipped with rectangular hole 10 on 1 lateral wall of box body in this embodiment, 4 sliding connection of stopper are in rectangular hole 10, be equipped with the open slot 11 with rectangular hole 10 intercommunication on 1 inner wall of box body of rectangular hole 10 below, it is equipped with slider 6 to slide in the open slot 11, slider 6 and 4 fixed connection of stopper, reset spring 5 locates between slider 6 and the open slot 11 inner wall, double-throw switch 3 is pulled the in-process to overhauing the work position by lightning protection work position, handle 30 drives stopper 4 through extrusion slider 6 and slides. When the handle 30 is pulled, the sliding block 6 is extruded through the handle 30, the sliding block 6 drives the limiting block 4 to slide along the open slot 11 in the sliding process along the open slot 11 until the limiting block 4 is separated from the jack 20, and the box cover 2 can be opened relative to the box body 1. Further, in the present embodiment, the handle 30 is provided on the front side surface of the case 1, and the handle 30 swings left and right, the end of the slider 6 protrudes forward from the side wall of the case 1, and the end of the slider 6 is used to abut against the handle 30. The double-throw switch 3 of present terminal box product all generally locates handle 30 on the box body 1 front side surface, the operation of being convenient for, consequently according to present operation custom, corresponding locate the slider 6 on the box body 1 lateral wall to the tip of slider 6 stretches out the box body 1 lateral wall and is used for with handle 30 butt, accords with user's operation custom. It should be noted that "front", "rear", "left" and "right" in the present embodiment are oriented as shown in fig. 1.

Still be equipped with the direction inclined plane 60 that is used for with handle 30 butt at the tip of slider 6 in this embodiment, because handle 30 is swing motion at pulling the in-process, it has along oblique extrusion force to slider 6, through setting up direction inclined plane 60, can make slider 6's slip more smooth and easy, avoids slider 6 card to die motionless.

For further reducing the potential safety hazard, still prevent the maloperation after overhauing through stopper 4 in this embodiment, it is concrete, lid 2 in this embodiment is articulated through the round pin hub rotation with box body 1 to still close the back through buckle subassembly joint each other, stopper 4's length is greater than the thickness of 1 lateral walls of box body, and double-throw switch 3 is located when overhauing the work position, and stopper 4's one end stretches out box body 1 and is used for preventing the buckle subassembly joint. Combine figure 1, figure 5 and figure 6 to show, like this at the maintainer after accomplishing maintenance work, if want through the buckle subassembly with lid 2 and the stable joint of box body 1, just need pull double-throw switch 3 to the lightning protection work position earlier, through reset spring 5 drive stopper 4 slip get into jack 20 in, just can make stopper 4 stretch out the one end of box body 1 and slide into the rectangular channel, and then just can realize buckle subassembly's joint. After the overhaul work is finished, the overhaul personnel can be forced to pull the double-throw switch 3 to the lightning protection working position, and the corresponding potential safety hazard is fundamentally avoided.

Wherein, the buckle subassembly includes plastic snap ring 7 and fixture block 8, and plastic snap ring 7 is located on lid 2, and fixture block 8 is located on box body 1 of rectangular hole 10 below. When the one end of stopper 4 stretches out box body 1, because fixture block 8 locates the rectangular hole 10 below, stopper 4 has just blockked plastics snap ring 7 joint to fixture block 8 in the one end of stretching out box body 1. Further, as shown in fig. 7, the opening groove 11 in this embodiment is an L-shaped groove, and a rectangular hole 10 is provided in the middle of the side wall of the case body 1 in the front-rear direction. Therefore, the clamping block 8 can be correspondingly arranged in the middle of the box body 1, and the plastic clamping ring 7 is arranged in the middle of the box cover 2, so that the use habit is met.

According to the current structure of terminal box, also establish the box body into the cuboid in this embodiment to be equipped with inlet wire and outlet on the box body, be convenient for terminal box connecting wire in addition, box body lower part four corners all is equipped with the installation stabilizer blade, the installation of the terminal box of can being convenient for.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.

Claims (9)

1. The utility model provides a can prevent lightning protection measurement terminal box of maloperation, includes box body (1), lid (2), double throw switch (3), ground net terminal and lightning protection module, double throw switch (3) include the lightning protection work position that switches on with the maintenance work position that ground net terminal switched on and with the lightning protection module, its characterized in that: be equipped with jack (20) on lid (2), be equipped with stopper (4) on box body (1) and be used for driving reset spring (5) that stopper (4) inserted jack (20), pull handle (30) of double-throw switch (3) by lightning protection work position to maintenance work position and be used for driving stopper (4) and deviate from jack (20).

2. A lightning protection metering junction box capable of preventing malfunction as defined in claim 1, wherein: be equipped with rectangular hole (10) on box body (1) lateral wall, stopper (4) sliding connection is in rectangular hole (10), be equipped with open slot (11) with rectangular hole (10) intercommunication on box body (1) inner wall of rectangular hole (10) below, it is equipped with slider (6) to slide in open slot (11), slider (6) and stopper (4) fixed connection, reset spring (5) are located between slider (6) and open slot (11) inner wall, and double-throw switch (3) are pulled the in-process to maintenance work position by the lightning protection work position, handle (30) drive stopper (4) through extrusion slider (6) and slide.

3. A lightning protection metering junction box capable of preventing malfunction as defined in claim 2, wherein: the handle (30) is arranged on the front side surface of the box body (1), the handle (30) swings left and right, the end part of the sliding block (6) extends forwards out of the side wall of the box body (1), and the end part of the sliding block (6) is used for being abutted to the handle (30).

4. A lightning protection metering junction box capable of preventing malfunction as defined in claim 3 wherein: the end of the slide block (6) is provided with a guide inclined plane (60) which is used for being abutted against the handle (30).

5. A lightning protection metering junction box capable of preventing malfunction as defined in claim 3 wherein: lid (2) and box body (1) pass through buckle subassembly joint, the length of stopper (4) is greater than the thickness of box body (1) lateral wall, double-throw switch (3) are located when overhauing the work position, and the one end of stopper (4) stretches out box body (1) and is used for preventing the buckle subassembly joint.

6. A lightning protection metering junction box capable of preventing malfunction according to claim 5, wherein: the buckle assembly comprises a plastic clamping ring (7) and a clamping block (8), the plastic clamping ring (7) is arranged on the box cover (2), and the clamping block (8) is arranged on the box body (1) below the rectangular hole (10).

7. A lightning protection metering junction box capable of preventing malfunction as defined in claim 3 wherein: the open slot (11) is an L-shaped slot, and the rectangular holes (10) are arranged in the middle of the side wall of the box body (1) in the front-back direction.

8. A lightning protection metering junction box capable of preventing misoperation according to any one of claims 1 to 7, wherein: the box body (1) is cuboid, and a wire inlet and a wire outlet are formed in the box body (1).

9. A lightning protection metering junction box capable of preventing misoperation according to any one of claims 1 to 7, wherein: four corners of the lower part of the box body (1) are provided with mounting support legs.

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