CN206004202U - An explosion-proof ring network cabinet - Google Patents

Abstract

The utility model discloses an explosion-proof ring main unit, which comprises an outer shell, a load switch, a fuse and a cable connected with the fuse, wherein the load switch and the fuse are arranged in the outer shell which is cuboid, the outer shell is provided with an upper surface which is parallel to the ground and is far away from the ground, a mounting frame for placing the fuse is arranged at the lower left part in the explosion-proof ring main unit, one side of the mounting frame is provided with a fixing groove for fixing the cable, the fixing groove extends along the direction vertical to the ground, the explosion-proof ring main unit is internally provided with a pressure sensor, a pressure controller connected with the pressure sensor, an alarm connected with the pressure controller, a pressure relief valve connected with the pressure controller and a valve control mechanism connected with the pressure relief valve, one pressure sensor is arranged in each load switch on an incoming line and an outgoing line loop of the ring main unit, the pressure controller is provided with a switch, the valve control mechanism is used for controlling the opening and the closing of the pressure relief valve. The utility model discloses simple structure, the suitability is high, effectively prevents the accident and takes place.

Description

An explosion-proof ring network cabinet

Technical field:

The utility model belongs to the field of ring network cabinets, in particular to an explosion-proof ring network cabinet.

Background technique:

Ring Main Unit (Ring Main Unit) is a group of transmission and distribution electrical equipment (high-voltage switchgear) installed in a metal or non-metal insulated cabinet or made into an assembled interval ring network power supply unit. It has a simple structure and small size. , low price, can improve power supply parameters and performance and power supply security and other advantages. It is widely used in distribution stations and box-type substations of load centers such as urban residential quarters, high-rise buildings, large public buildings, factories and enterprises.

The ring network cabinet is a very important high-voltage switchgear equipment, mainly composed of electrical components such as load switches, fuses, and electric operating mechanisms. The electric operating mechanism is used to operate the on and off of the load switch. Using the With the electric operating mechanism, people can remotely operate the ring network cabinet in the monitoring room of the ring network cabinet. In the actual operation of the high-voltage ring network cabinet, due to various reasons, the gas pressure in the load switch of the ring network cabinet will be too high. Excessive gas pressure will cause the gas in the load switch in the ring main unit to expand, and eventually lead to an explosion of the ring main unit, which will bring life danger, economic and spiritual losses to enterprises, society and the people.

At present, the ring main unit usually only relies on fuses to protect the outgoing circuit of the ring main unit. When the outgoing circuit fails and the current is too large, the fuse on the outgoing circuit will be blown, thereby protecting the outgoing circuit. The overall It can be seen that the protection function of the ring network cabinet is too small, which reduces the safety and reliability of the ring network cabinet.

Therefore, in view of the above technical problems, it is necessary to provide a novel structure of explosion-proof ring main unit to solve the problems in the prior art.

Utility model content:

The purpose of the utility model is to provide a new type of explosion-proof ring network cabinet, which has a simple structure and can effectively prevent accidents.

The utility model adopts the following technical scheme: an explosion-proof ring network cabinet, which includes an outer shell, a load switch, a fuse and a cable connected to the fuse, the load switch and the fuse are installed in the outer shell, and the outer shell It is in the shape of a cuboid, the outer casing is provided with an upper surface parallel to the ground and away from the ground, the lower left of the explosion-proof ring network cabinet is provided with a mounting frame for placing fuses, and one side of the mounting frame is provided for A fixing groove for fixing cables, the fixing groove extends along the direction vertical to the ground, and the explosion-proof ring network cabinet is provided with a pressure sensor, a pressure controller connected to the pressure sensor, an alarm connected to the pressure controller, and a pressure sensor connected to the pressure sensor. The pressure relief valve connected to the controller and the valve control mechanism connected to the pressure relief valve, each load switch on the incoming line and outgoing line circuit of the ring network cabinet is equipped with a pressure sensor, and the pressure controller is set There is a switching circuit controlled by a pressure sensor, and the valve control mechanism is used to control the opening and closing of the pressure relief valve.

Further, the upper surface is provided with a busbar channel and a busbar protection structure, and the busbar protection structure includes four side plates arranged perpendicular to the upper surface and a top plate connected to the four side plates and parallel to the upper surface, at least the The two side plates are provided with grid ventilation holes, and the top plate is provided with a number of ventilation holes.

Further, the top board and the side boards are detachable from each other, and the two parallel side boards are provided with card slots, and the top board is slidably connected to the side boards through the card slots.

Further, the top plate is provided with a hook or a protrusion that facilitates the sliding of the top plate along the slot.

Further, the alarm is an audible alarm.

Further, the alarm is a flashing light alarm.

Further, the explosion-proof ring network cabinet is provided with a partition, and the partition isolates the upper and lower chambers, the fuse and the installation are installed in the lower chamber, the pressure sensor, pressure controller, alarm , pressure relief valve and valve control mechanism are located in the upper chamber.

The utility model has the following beneficial effects: the explosion-proof ring network cabinet of the utility model has simple structure, high applicability, and can effectively prevent accidents from happening.

Description of drawings:

Fig. 1 is the schematic diagram that the utility model explosion-proof ring network cabinet is not provided with the bus bar protection structure;

Fig. 2 is the schematic diagram of the utility model explosion-proof ring network cabinet;

Fig. 3 is the schematic diagram of another state of explosion-proof ring main unit of the present invention;

Fig. 4 is a schematic diagram of the control system in the explosion-proof ring main unit of the present invention.

in:

Outer shell 1, upper surface 11, load switch 2, fuse 3, cable 4, mounting frame 5, fixing slot 51, busbar protection structure 6, side plate 61, top plate 62, grid ventilation hole 63, card slot 64 , Partition 7, lower chamber 71, upper chamber 72.

detailed description:

The utility model discloses an explosion-proof ring network cabinet with a novel structure. The explosion-proof ring network cabinet has a simple structure and can effectively prevent accidents from occurring.

As shown in Figures 1 and 4, an explosion-proof ring network cabinet includes an outer shell 1, a load switch 2, a fuse 3 and a cable 4 connected to the fuse 3, and the load switch 2 and the fuse 3 are installed in the shell In body 1. The outer casing 1 is in the shape of a cuboid. The outer casing 1 is provided with an upper surface 11 parallel to the ground and away from the ground. The explosion-proof ring network cabinet is equipped with a pressure sensor, a pressure controller connected to the pressure sensor, an alarm connected to the pressure controller, a pressure relief valve connected to the pressure controller, and a valve control mechanism connected to the pressure relief valve. A pressure sensor is installed in each load switch on the incoming line and outgoing line circuit of the network cabinet, the pressure controller is equipped with a switching circuit controlled by the pressure sensor, and the valve control mechanism is used to control the opening and closing of the pressure relief valve.

As shown in FIG. 2 and FIG. 3 , the upper surface 11 is provided with a busway and a busbar protection structure 6 . The busway is located in the busbar protection structure 6 . The bus protection structure 6 includes four side plates 61 arranged perpendicular to the upper surface 11 and a top plate 62 connected to the four side plates 61 and parallel to the upper surface 11, at least two side plates 61 are provided with grid ventilation holes 63 , In this embodiment, the top plate 62 is a flat plate, of course, in other embodiments, a number of ventilation holes can be provided on the top plate 62 to assist in heat dissipation.

As shown in FIG. 2 , the top board 62 and the side boards 61 are detachable from each other. Two side boards 61 parallel to each other are provided with slots 64 , and the top board 62 is slidably connected to the side boards 61 through the slots 64 .

The top board 62 is provided with a hook or a protrusion (not shown) that facilitates the sliding of the top board 62 along the slot 64 . With such a setting, the operation is simple and convenient, and the convenience is increased.

As shown in Figure 1, the lower left side of the explosion-proof ring network cabinet is provided with a mounting frame 5 for placing the fuse 3, and one side of the mounting frame 5 is provided with a fixing groove 51 for fixing the cable 4, and the fixing groove 51 is along the vertical ground. direction extension. Such arrangement simplifies the internal layout of cables.

The alarm is an audible alarm or a flashing light alarm.

As shown in Figure 1, a partition 7 is provided in the explosion-proof ring network cabinet, and the partition 7 isolates the upper and lower chambers. The fuse 3 and the mounting frame 5 are arranged in the lower chamber 71. The pressure sensor, pressure controller, An alarm, a pressure relief valve and a valve control mechanism are arranged in the upper chamber 72 .

The utility model has the following beneficial effects: the explosion-proof ring network cabinet of the utility model has simple structure, high applicability, and can effectively prevent accidents from happening.

The above is only a preferred embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, some improvements can be made without departing from the principle of the utility model, and these improvements should also be regarded as the present invention. Protection scope of utility model.

Claims (7)

1. a kind of explosion-proof ring main unit, it is included shell body (1), on-load switch (2), fuse (3) and is connected with fuse (3) Cable (4), described on-load switch (2), fuse (3) be installed in shell body (1), and described shell body (1) is cuboid Shape, described shell body (1) be provided with parallel to the ground and upper surface (11) away from ground it is characterised in that：Described explosion-proof looped network Lower left in cabinet is provided with to place the installing rack (5) of fuse (3), and the side of described installing rack (5) is provided with order to fixation The fixing groove (51) of cable (4), described fixing groove (51) extends along direction perpendicular to the ground, is provided with pressure in described explosion-proof ring main unit The alarm that the pressure controller that force transducer is connected with pressure transducer is connected with pressure controller and pressure controller connect The relief valve connecing and the valve control mechanism being connected with relief valve, each load on the inlet wire and transmission line circuit of described ring main unit It is respectively provided with a described pressure transducer, described pressure controller is provided with the on-off circuit being controlled by pressure transducer in switch, Described valve control mechanism is used for controlling the opening and closing of relief valve.

2. explosion-proof ring main unit according to claim 1 it is characterised in that：Described upper surface (11) be provided with busbar channel with And bus safeguard structure (6), described bus safeguard structure (6) include four side plates (61) arranging perpendicular to upper surface (11) with And connect and the top board (62) parallel with upper surface (11) with four side plates (61), at least described two side plates (61) are provided with net Grid air vent (63), described top board (62) is provided with some air-vents.

3. explosion-proof ring main unit according to claim 2 it is characterised in that：Described top board (62) is with side plate (61) each other Detachably, described two side plates (61) being parallel to each other are provided with draw-in groove (64), and described top board (62) is passed through draw-in groove (64) and slided Be connected on side plate (61).

4. explosion-proof ring main unit according to claim 3 it is characterised in that：Described top board (62) is provided with and is easy to pull top board (62) hook part slided along draw-in groove (64) or protuberance.

5. explosion-proof ring main unit according to claim 1 it is characterised in that：Described alarm is voice guard.

6. explosion-proof ring main unit according to claim 1 it is characterised in that：Described alarm is flash lamp alarm.

7. explosion-proof ring main unit according to claim 1 it is characterised in that：It is provided with dividing plate (7), institute in described explosion-proof ring main unit State dividing plate (7) and isolate upper and lower two chambers, described fuse (3) and installing rack (5) in lower chambers (71), described pressure Sensor, pressure controller, alarm, relief valve and valve control mechanism are in upper chamber (72).