CN213425424U - Three-phase combined contact box with zero sequence transformer - Google Patents

Abstract

The utility model discloses a three-phase combined contact box with zero sequence mutual inductor, which comprises a base, wherein the upper surface of the base is welded with a first shell, the upper surface of the base is symmetrically provided with three box bodies, the inner side walls of the three box bodies are all provided with the zero sequence mutual inductor, the upper surface of the first shell is welded with a second shell, the top of the second shell is bonded with a damping pad, the top of the damping pad is bonded with a top plate, the upper surface of the second shell is uniformly provided with first through holes, the inner side walls of the first through holes are connected with a support rod in a sliding way, in the using process of the device, the box body is protected by the first shell, when falling objects hit the box bodies, the first shell is protected by the top plate, meanwhile, the top plate transmits the received impact force to the damping pad and a spring, the received impact force is consumed, and the damage of the falling objects to the top plate is reduced, thereby protect the box body in the first casing, improve the box body to the protective effect of box body internal part device.

Description

Three-phase combined contact box with zero sequence transformer

Technical Field

The utility model relates to a distribution equipment technical field specifically is a take zero sequence transformer's three-phase combination contact box.

Background

The line overvoltage protector refers to equipment for protecting a high-altitude line. Direct-striking lightning overvoltage or induced overvoltage caused by lightning striking an overhead line easily causes flashover or breakdown of an insulator, formed power frequency follow current and high-temperature electric arc instantly fuses a lead. In order to prevent the accident, a line overvoltage protector is required to be installed on the overhead line, the line overvoltage protector has the functions of guiding lightning current to the protector when the overhead line is struck by lightning, cutting off power frequency follow current, avoiding insulator flashover or breakdown, protecting the overhead line from causing the accident of lightning breakage, and inhibiting overvoltage protection of electrical equipment by the overvoltage protector and the lightning arrester. The three-phase combined overvoltage protector is a novel overvoltage protector and is mainly used in power grids of power generation, power supply and power utilization enterprises. The protective circuit is used for protecting electrical equipment such as transformers, switches, buses, motors and the like, can limit atmospheric overvoltage and operation overvoltage caused by various switches, and can play a reliable role in limiting interphase and relative ground overvoltage. Three-phase contact boxes are usually used only as mounting and insulating protection components for stationary contacts.

The existing three-phase combined contact box with the zero sequence transformer has poor protection effect on the contact box in the using process, and particularly when the contact box is installed outside an electric power cabinet for use, external falling objects easily damage the contact box and influence the normal use of the contact box, so that the protection effect of the contact box on internal devices of the box body is reduced, and therefore, the three-phase combined contact box with the zero sequence transformer is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take zero sequence transformer's three-phase combination contact box to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a take zero sequence transformer's three-phase combination contact box, includes the base, the last skin weld of base has first casing, three box body, three are installed to the upper surface symmetry of base zero sequence transformer is all installed to the inside wall of box body, the last skin weld of first casing has the second casing, the top of second casing bonds and has the damping pad, the top of damping pad bonds and has the roof, first through-hole has evenly been seted up to the upper surface of second casing, the inside wall sliding connection of first through-hole has the bracing piece, the top of bracing piece is run through the damping pad, the top of bracing piece with roof welding, the bottom welding of bracing piece has the limiting plate, the lower fixed surface of limiting plate is connected with the spring, the bottom of spring with first casing fixed connection.

As further preferable in the present technical solution: second through holes are uniformly formed in the two sides of the first shell, and third through holes are formed in the outer side wall of the box body.

As further preferable in the present technical solution: the inside wall symmetry magnetism of first casing is connected with two magnetic stripes, two the equal fixedly connected with dust screen in one side that the magnetic stripe is adjacent.

As further preferable in the present technical solution: four threaded through holes are symmetrically formed in the upper surface of the base, and bolts are connected to the inner side walls of the four threaded through holes in a threaded mode.

As further preferable in the present technical solution: the inside wall symmetry of first casing articulates there are two door bodies, two the front surface of the door body all welds the handle.

As further preferable in the present technical solution: two lock noses are all welded to the front surface of the door body, two pass through lock body fixed connection between the lock nose.

Compared with the prior art, the beneficial effects of the utility model are that: in the in-process that this device used, protects the box body through first casing, when the junk pounded to the box body, protected first casing through the roof, the impact force transmission that the roof will receive simultaneously gives damping pad and spring, consumes the impact force that receives, reduces the damage that the junk caused the roof to the box body in to first casing protects, improves the protective effect of box body to the inside device of box body.

Drawings

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

fig. 2 is a schematic side view of the first housing of the present invention;

fig. 3 is a front view of the first housing of the present invention.

In the figure: 1. a base; 2. a first housing; 3. a box body; 4. a zero sequence transformer; 5. a second housing; 6. a damping pad; 7. a top plate; 8. a first through hole; 9. a support bar; 10. a limiting plate; 11. a spring; 12. a second through hole; 13. a third through hole; 14. a magnetic strip; 15. a dust screen; 16. a threaded through hole; 17. a bolt; 18. a door body; 19. a handle; 20. locking the nose; 21. and a lock body.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a take zero sequence transformer's three-phase combination contact box, the on-line screen storage device comprises a base 1, base 1's last surface welding has first casing 2, three box body 3 is installed to base 1's upper surface symmetry, zero sequence transformer 4 is all installed to the inside wall of three box body 3, the last surface welding of first casing 2 has second casing 5, the top of second casing 5 bonds there is damping pad 6, damping pad 6's top bonds there is roof 7, first through-hole 8 has evenly been seted up to second casing 5's upper surface, first through-hole 8's inside wall sliding connection has bracing piece 9, damping pad 6 is run through at the top of bracing piece 9, bracing piece 9's top and roof 7 welding, the bottom welding of bracing piece 9 has limiting plate 10, limiting plate 10's lower fixed surface is connected with spring 11, spring 11's bottom and 2 fixed connection.

In this embodiment, specifically: the two sides of the first shell 2 are uniformly provided with second through holes 12, and the outer side walls of the three box bodies 3 are provided with third through holes 13; through the setting of third through-hole 13, do benefit to gaseous circulation in the box body 3 to dispel the heat to the device in the box body 3, through the setting of second through-hole 12, do benefit to gaseous circulation in the first casing 2 simultaneously, improve the radiating effect of this device.

In this embodiment, specifically: the inner side wall of the first shell 2 is symmetrically and magnetically connected with two magnetic strips 14, and one adjacent sides of the two magnetic strips 14 are fixedly connected with dust screens 15; through the setting of dust screen 15, when gaseous through second through-hole 12 entering first casing 2, filter the dust in the gas, and dust screen 15 passes through magnetic stripe 14 and the fixed setting of first casing 2, is convenient for install or dismantle the clearance to dust screen 15, and the user of being convenient for uses.

In this embodiment, specifically: four threaded through holes 16 are symmetrically formed in the upper surface of the base 1, and bolts 17 are connected to the inner side walls of the four threaded through holes 16 in a threaded mode; through the setting of bolt 17, reserve the mounting hole in the position of using, rotate bolt 17 in screw through-hole 16, and insert in the mounting hole, install the position of this device and fix.

In this embodiment, specifically: two door bodies 18 are symmetrically hinged to the inner side wall of the first shell 2, and handles 19 are welded on the front surfaces of the two door bodies 18; the arrangement of the door body 18 can protect the box body 3 in the first shell 2, and the arrangement of the handle 19 is convenient for opening or closing the door body 18.

In this embodiment, specifically: two lock noses 20 are welded on the front surfaces of the two door bodies 18, and the two lock noses 20 are fixedly connected through a lock body 21; through the setting of lock body 21, fix two lock noses 20 to fix the door body 18, play the effect of theftproof to box body 3 in the first casing 2.

Working principle or structural principle, when in use, the device is moved to a use position, a bolt 17 is rotated in a threaded through hole 16 and is shifted into a mounting hole reserved in the use position, the position of a base 1 is fixed, so that the device is mounted, heat generated by devices in a box body 3 is discharged from a third through hole 13, then the circulation of gas in a first shell 2 is accelerated through a second through hole 12, the heat dissipation effect of the device is improved, when the gas enters the first shell 2 through the second through hole 12, dust in the gas is filtered through a dust screen 15, a zero sequence transformer 4 is mounted in the box body 3, an independent mounting space is not required to be arranged, the use space is saved, when the device is hit by falling objects, the first shell 2 is protected through a top plate 7, and meanwhile, the top plate 7 transmits the received impact force to a damping pad 6, consume the impact force that roof 7 received through damping pad 6, roof 7 extrudees bracing piece 9 simultaneously, bracing piece 9 extrudees spring 11, further consume the impact force that roof 7 received, reduce the damage that roof 7 received, setting through limiting plate 10, restrict the position of bracing piece 9, when the device in needs to box body 3 overhauls, open lock body 21, remove the control to two lock noses 20, open door 18 through handle 19, thereby overhaul the device in box body 3 in first casing 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a take zero sequence transformer's three-phase combination contact box, includes base (1), its characterized in that: the upper surface welding of base (1) has first casing (2), three box body (3) are installed to the upper surface symmetry of base (1), it is three zero sequence transformer (4) are all installed to the inside wall of box body (3), the upper surface welding of first casing (2) has second casing (5), damping pad (6) have been bonded at the top of second casing (5), roof (7) have been bonded at the top of damping pad (6), first through-hole (8) have evenly been seted up to the upper surface of second casing (5), the inside wall sliding connection of first through-hole (8) has bracing piece (9), the top of bracing piece (9) runs through damping pad (6), the top of bracing piece (9) with roof (7) welding, the bottom welding of bracing piece (9) has limiting plate (10), the lower fixed surface of limiting plate (10) is connected with spring (11), the bottom of the spring (11) is fixedly connected with the first shell (2).

2. The three-phase combined contact box with the zero sequence transformer according to claim 1, characterized in that: second through holes (12) are uniformly formed in the two sides of the first shell (2), and third through holes (13) are formed in the outer side wall of the box body (3).

3. The three-phase combined contact box with the zero sequence transformer according to claim 1, characterized in that: the inside wall symmetry magnetism of first casing (2) is connected with two magnetic stripes (14), two the equal fixedly connected with dust screen (15) in one side that magnetic stripe (14) are adjacent.

4. The three-phase combined contact box with the zero sequence transformer according to claim 1, characterized in that: four threaded through holes (16) are symmetrically formed in the upper surface of the base (1), and bolts (17) are connected to the inner side walls of the four threaded through holes (16) in a threaded mode.

5. The three-phase combined contact box with the zero sequence transformer according to claim 1, characterized in that: the inner side wall of the first shell (2) is symmetrically hinged with two door bodies (18), and handles (19) are welded on the front surfaces of the two door bodies (18).

6. The three-phase combined contact box with the zero sequence transformer of claim 5, wherein: two lock noses (20) are all welded to the front surface of two door body (18), two lock noses (20) are through lock body (21) fixed connection between.

Images