CN211629523U - Single-phase earthing device of prevention - Google Patents

Abstract

The utility model discloses a preventive single-phase grounding device, which relates to the technical field of electric power systems and aims at the problem of low safety at present, the following proposal is proposed, comprising a box body, one side of the box body is connected with a replacing door through a hinge, the replacing door and one side of the box body are both fixed with a buffer block, the other end of the buffer block is fixedly connected with an insulating plate, the bottom of the box body is fixedly connected with a protective device, the two ends of the protective device are respectively connected with an incoming line and an outgoing line, one end of the outgoing line is fixedly connected with a stabilizer fixedly connected with the box body, the utility model has simple structure and convenient use, can carry out multiple protection on the fuse wire which ensures safety, reduces the possibility of one-way grounding, further avoids the danger which is possible to follow, and provides greater safety guarantee for maintenance personnel through the isolation of a plurality of insulating devices, the overall safety risk is reduced, and the safety of equipment and personnel is better guaranteed.

Description

Single-phase earthing device of prevention

Technical Field

The utility model relates to an electric power system technical field especially relates to a single-phase earthing device of prevention.

Background

In electric power system's course of work, need use the height to join in marriage the room and carry out the switching of work, but the high-tension fuse mounting dimension in the capacitor cabinet of room is joined in marriage to current height is closer than the cabinet door ratio, when the inside trouble that breaks down of condenser, high-tension fuse fusing, because high-tension fuse pulling force effect, the fuse that the power end was fused can be flicked to the cabinet door in the twinkling of an eye, cause a short circuit relatively, the arc light of production can arouse short circuit and then enlarge the accident and influence between the three-phase, cause the large tracts of land power failure accident, the accident of electric shock or conflagrat.

Disclosure of Invention

The utility model provides a pair of single-phase earthing device of prevention has solved the low problem of security.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a single-phase earthing device of prevention, includes the box, one side of box is rotated through the hinge and is connected with the change door, the one side of changing door and box all is fixed with the buffer block, and the other end fixedly connected with insulation board of buffer block, the bottom fixedly connected with protector of box, protector's both ends are connected with the inlet wire respectively and are qualified for the next round of competitions, the one end fixedly connected with of being qualified for the next round of competitions and box fixed connection's stabilizer.

Preferably, the protector includes the connecting rod with box fixed connection, and the other end fixedly connected with under casing of connecting rod, be connected with the top case on the under casing, the downside of under casing rotates through the hinge and is connected with a plurality of bracing pieces, and the other end fixedly connected with installation piece of bracing piece, one side fixedly connected with of bracing piece and under casing fixed connection's first spring, fixedly connected with division board in the under casing, two be connected with the weld line between the installation piece, two the installation piece respectively with inlet wire and be qualified for the next round of competitions fixed connection, the upside of under casing rotates and is connected with the rotation axis, the outer wall fixed cover of rotation axis has cup jointed the rotor plate, one side fixedly connected with of rotor plate and under casing fixed connection's second spring, the downside fixedly connected with safety device of top case.

Preferably, the safety device comprises a gas storage box fixedly connected with the top box, a gas guide pipe is fixedly connected to the lower side of the gas storage box, a limiting plate is sleeved at the lower end of the gas guide pipe in a sliding mode, one end of the limiting plate is fixedly connected with a third spring fixedly connected with the gas storage box, a vent hole is formed in the limiting plate, and a gas inlet pipe is fixedly connected to one side of the gas storage box.

Preferably, the lower side of the gas storage box is fixedly connected with a guide plate in sliding connection with a limiting plate, and the limiting plate is provided with a safety pin.

Preferably, one side of the bottom box is fixedly connected with a limiting ring, and the outer wall of the limiting ring is sleeved with the fixing ring in a threaded manner.

Preferably, the downside of top case is provided with inlays the strip, be provided with on the under casing and inlay the groove, inlay the strip and inlay the groove and mutually support, the upside of under casing is provided with the connecting block with top case sliding connection.

Preferably, the mounting block is internally provided with a connecting groove, the welding line, the incoming line and the outgoing line are all located in the connecting groove, the mounting block is connected with a fixing bolt, and the welding line, the incoming line and the outgoing line are all fixedly connected with the mounting block through the fixing bolt.

The utility model has the advantages that:

1. through the mutual cooperation between protector itself and each device in the protector, and utilize insulation board and buffer block's isolated, can carry out multiple protection to the fuse-link of guaranteeing safety, reduce and contact external box or ground after the fuse-link breaks, produce the possibility of one-way ground connection, and then avoided the danger of follow-up probably producing, and a plurality of insulator arrangement's isolated, can be in the maintenance process in later stage, give the bigger safety guarantee of maintenance personal, reduce holistic safety risk, better guarantee equipment and personnel's safety.

2. Through top case and the under casing that can dismantle each other, can follow-up maintenance in-process simplified operation, reduce manpower and materials, increase work efficiency, the safety device that simultaneously can reuse, further convenient reuse of whole device practices thrift cost of maintenance.

Drawings

Fig. 1 is a schematic partial front view cross-sectional view of a single-phase grounding prevention device according to the present invention;

fig. 2 is a schematic front sectional view of a protection device for preventing a single-phase grounding device according to the present invention;

fig. 3 is a left side sectional view of a protection device for preventing a single-phase grounding device according to the present invention;

fig. 4 is a schematic top sectional view of a protection device for preventing a single-phase grounding device according to the present invention;

fig. 5 is an enlarged schematic view of a point a of the single-phase grounding device for preventing according to the present invention.

Reference numbers in the figures: the device comprises a box body 1, a replacing door 2, an insulating plate 3, a protective device 4, a wire inlet 5, a wire outlet 6, a stabilizer 7, a spring 8, a top box 9, a gas inlet pipe 10, a gas storage box 11, a partition plate 12, a fixing bolt 13, a rotating plate 14, a second spring 15, a rotating shaft 16, a limiting ring 17, a mounting block 18, a welding line 19, a supporting rod 20, a first spring 21, a bottom box 22, a limiting ring 23, a connecting rod 24, a connecting groove 25, an air guide pipe 26, a third spring 27, an air vent 28, a limiting plate 29 and a guide plate 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a device for preventing single-phase grounding comprises a box body 1, one side of the box body 1 is rotatably connected with a replacing door 2 through a hinge, the replacing door 2 and one side of the box body 1 are both fixed with a buffer block 8, the other end of the buffer block 8 is fixedly connected with an insulating plate 3, the bottom of the box body 1 is fixedly connected with a protective device 4, two ends of the protective device 4 are respectively connected with an incoming line 5 and an outgoing line 6, one end of the outgoing line 6 is fixedly connected with a stabilizer 7 fixedly connected with the box body 1, when in operation, one end of the incoming line 5 and one end of the outgoing line 6 are fixedly connected with the protective device 4 and then are respectively connected to a designated position, and simultaneously, the protective device 4 and the box body 1 are fixedly connected, when an accident occurs, firstly, the protective device 4 is completely protected and is insulated again through the insulating plate 3, wherein the, again reducing the conduction of electricity to the cabinet 1 or replacement door 2 and avoiding the possibility of unidirectional grounding.

The protection device 4 comprises a connecting rod 24 fixedly connected with the box body 1, the other end of the connecting rod 24 is fixedly connected with a bottom box 22, the bottom box 22 is connected with a top box 9, the lower side of the bottom box 22 is rotatably connected with a plurality of supporting rods 20 through hinges, the other end of each supporting rod 20 is fixedly connected with a mounting block 18, one side of each supporting rod 20 is fixedly connected with a first spring 21 fixedly connected with the bottom box 22, a partition plate 12 is fixedly connected in the bottom box 22, a welding line 19 is connected between the two mounting blocks 18, the two mounting blocks 18 are respectively fixedly connected with an incoming line 5 and an outgoing line 6, the upper side of the bottom box 22 is rotatably connected with a rotating shaft 16, the outer wall of the rotating shaft 16 is fixedly sleeved with a rotating plate 14, one side of the rotating plate 14 is fixedly connected with a second spring 15 fixedly connected with the bottom box 22, the lower side of the top box 9 is fixedly connected with a safety device, meanwhile, the welding line 19 is installed on the installation block 18 and is connected and fixed, then the top box 9 is covered on the bottom box 22, installation is completed, after the welding line 19 is broken, the installation block 18 rotates around the supporting rod 20 through pulling of the first spring 21, at the moment, the installation block 18 impacts the rotating plate 14, resistance of the second spring 15 is overcome, the rotating plate 14 rotates, the rotating plate 14 is pressed against the safety device to conduct further operation, in the process, the partition plate 12 conducts insulation, electric arcs possibly generated by high voltage are reduced, safety is guaranteed, the height of the rotating column 20 is higher than that of the welding line 19, the welding line 19 can be prevented from falling onto the bottom box 22, and further insulation processing is conducted.

The safety device comprises a gas storage box 11 fixedly connected with a top box 9, a gas guide pipe 26 is fixedly connected with the lower side of the gas storage box 11, the lower end of the gas guide pipe 26 is sleeved with a limiting plate 29 in a sliding manner, one end of the limiting plate 29 is fixedly connected with a third spring 27 fixedly connected with the gas storage box 11, a vent hole 28 is arranged on the limiting plate 29, an air inlet pipe 10 is fixedly connected with one side of the gas storage box 11, one end of a rotating plate 14 is extruded onto the limiting plate 29 in the rotating process of the rotating plate 14, the limiting plate 29 overcomes the elastic force of the third spring 27, the limiting plate 29 moves towards one end, the vent hole 28 enters the gas guide pipe 26, the gas guide pipe 26 is further communicated with the outside, inert gas stored in the gas storage box 11 enters a closed space formed by the bottom box 22 and the top box 9, oxygen is isolated, meanwhile, electric arcs which possibly occur are reduced, and the possibility, and after the switch is triggered, the air can be recharged through the air inlet pipe 10 at the later stage for cyclic utilization.

The lower side of the gas storage box 11 is fixedly connected with a guide plate 30 which is in sliding connection with a limiting plate 29, the limiting plate 29 is provided with a safety pin, the guide plate 20 stabilizes the movement of the limiting plate 29, the stability of the limiting plate 29 is ensured, and meanwhile, the limiting plate 29 is limited by the safety pin before use, so that safety protection is performed, the gas is prevented from overflowing, and the gas is removed before use.

One side fixed connection of bottom case 22 has limit ring 17, and the outer wall screw thread of limiting ring 17 cup joints retainer plate 23, through the work of limiting ring 17 and retainer plate 23 for the opening of limiting ring 17 can carry out certain reduction, carries out the centre gripping fixed to inlet wire 5 and outlet wire 6, guarantees inlet wire 5 and the stability of outlet wire 6.

The downside of top case 9 is provided with inlays the strip, is provided with on the under casing 22 and inlays the groove, inlays the strip and inlays the groove and mutually support, and the upside of under casing 22 is provided with the connecting block with top case 9 sliding connection, can guarantee the fixed seal between top case 9 and the under casing 22 through inlaying the strip and inlaying the groove, and the connecting block adopts the plastics material, and the joint is in top case 9 for fixed connection between top case 9 and the under casing 22.

Be provided with the spread groove 25 in the installation piece 18, the one end of weld line 19, inlet wire 5 and being qualified for the next round of competitions 6 all is located the spread groove 25, is connected with fixing bolt 13 on the installation piece 18, and weld line 19, inlet wire 5 and being qualified for the next round of competitions 6 all pass through fixing bolt 13 and installation piece 18 fixed connection, guarantee the fixed of each connecting wire through fixing bolt 13, and the spread groove is conveniently installed.

The working principle is as follows: when the device works, one end of the incoming line 5 and one end of the outgoing line 6 are fixedly connected with the protection device 4, then the incoming line 5 and the outgoing line 6 are respectively connected to a designated position, meanwhile, the supporting rod 24 and the box body 1 are fixedly connected, when an accident occurs, firstly, the top box 9 and the bottom box 22 are insulated on the outer sides to carry out first heavy protection, after the fuse wire 19 is fused, the mounting block 18 rotates around the supporting rod 20 through the pulling of the first spring 21, at the moment, the mounting block 18 impacts on the rotating plate 14 to overcome the resistance of the second spring 15 to rotate the rotating plate 14, further, the rotating plate 14 is pressed against the limiting plate 29, the limiting plate 29 overcomes the elastic force of the third spring 27 to move the limiting plate 29 to one end, further, the vent hole 28 enters the air duct 26, further, the air duct 26 is communicated with the outside, and the inert gas stored in the gas storage box 11 enters a closed space surrounded by the bottom box 22 and the top box 9, when isolated oxygen, reduce the electric arc that probably appears, on the possibility that the reduction conflagration took place, carry out the heavy protection of second, and in this process, division board 12 insulates, reduce the electric arc that the high pressure probably produced, carry out the protection of third weight, guarantee safety, the highly more fuse-link 19 height of column spinner 20, can avoid fuse-link 19 to drop on bottom case 22, carry out further insulating processing, and insulation board 3 carries out the insulation once more, wherein buffer block 8 can adopt the rubber material, reduce again on electric power conducts box 1 or changes door 2, avoid the possibility of one-way ground connection, carry out the protection of fourth weight.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides a single-phase earthing device of prevention, includes box (1), its characterized in that, one side of box (1) is connected with through the hinge rotation and is changed door (2), the one side of changing door (2) and box (1) all is fixed with buffer block (8), and the other end fixedly connected with insulation board (3) of buffer block (8), the bottom fixedly connected with protector (4) of box (1), the both ends of protector (4) are connected with inlet wire (5) and are qualified for the next round of competitions (6) respectively, the one end fixedly connected with of going out line (6) and box (1) fixed connection's stabilizer (7).

2. The single-phase grounding prevention device according to claim 1, wherein the protection device (4) comprises a connecting rod (24) fixedly connected with the box body (1), the other end of the connecting rod (24) is fixedly connected with a bottom box (22), a top box (9) is connected onto the bottom box (22), the lower side of the bottom box (22) is rotatably connected with a plurality of supporting rods (20) through hinges, the other end of each supporting rod (20) is fixedly connected with a mounting block (18), one side of each supporting rod (20) is fixedly connected with a first spring (21) fixedly connected with the bottom box (22), a partition plate (12) is fixedly connected into the bottom box (22), a welding line (19) is connected between the two mounting blocks (18), the two mounting blocks (18) are respectively fixedly connected with an incoming line (5) and an outgoing line (6), the upper side of the bottom box (22) is rotatably connected with a rotating shaft (16), the outer wall of the rotating shaft (16) is fixedly sleeved with a rotating plate (14), one side of the rotating plate (14) is fixedly connected with a second spring (15) fixedly connected with a bottom box (22), and the lower side of the top box (9) is fixedly connected with a safety device.

3. The device for preventing single-phase grounding as claimed in claim 2, wherein the safety device comprises an air storage tank (11) fixedly connected with the top tank (9), an air guide pipe (26) is fixedly connected to the lower side of the air storage tank (11), a limiting plate (29) is slidably sleeved at the lower end of the air guide pipe (26), a third spring (27) fixedly connected with the air storage tank (11) is fixedly connected to one end of the limiting plate (29), an air vent (28) is arranged on the limiting plate (29), and an air inlet pipe (10) is fixedly connected to one side of the air storage tank (11).

4. A preventive single-phase earthing device according to claim 3, characterized in that a guide plate (30) slidably connected with a limiting plate (29) is fixedly connected to the lower side of the gas storage tank (11), and a safety pin is arranged on the limiting plate (29).

5. The device for preventing single-phase grounding as recited in claim 2, wherein a limiting ring (17) is fixedly connected to one side of the bottom box (22), and a fixing ring (23) is sleeved on the outer wall of the limiting ring (17) in a threaded manner.

6. A preventive single-phase earthing device according to claim 2, characterized in that the underside of the top box (9) is provided with a mosaic strip, the bottom box (22) is provided with a mosaic groove, the mosaic strip and the mosaic groove are mutually matched, and the upper side of the bottom box (22) is provided with a connecting block which is slidably connected with the top box (9).

7. The device for preventing single-phase grounding as claimed in claim 2, wherein a connecting groove (25) is arranged in the mounting block (18), one end of each of the welding line (19), the incoming line (5) and the outgoing line (6) is located in the connecting groove (25), a fixing bolt (13) is connected to the mounting block (18), and the welding line (19), the incoming line (5) and the outgoing line (6) are fixedly connected with the mounting block (18) through the fixing bolts (13).

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