CN216134162U

CN216134162U - Box door safety locking device of box-type substation

Info

Publication number: CN216134162U
Application number: CN202122122357.5U
Authority: CN
Inventors: 许民; 王世军; 王远志; 江华
Original assignee: Yichang Changyao Power Complete Equipment Co ltd
Current assignee: Yichang Changyao Power Complete Equipment Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-03-25
Anticipated expiration: 2031-09-03

Abstract

A box door safety locking device for a box-type substation comprises an inner box door and an outer box door, wherein the inner box door and the outer box door are locked with a box body through electromagnetic safety locks; the electromagnetic safety lock comprises an armature, the armature is arranged on the box body in a sliding mode, and the upper end of the armature is connected with the box body through a spring; the lower end of the armature is opposite to an iron core on the box body, and a working coil and an indicating coil are wound on the iron core, wherein the working coil is connected into a control circuit in the box body, and an output signal of the indicating coil drives an indicating lamp to be bright and dark; one side of the armature is connected with the clamping column through a connecting rod, and a clamping ring is correspondingly arranged on the box door; when the working coil is in a power-on state, the clamping column moves downwards and is clamped with the clamping ring to form a locking structure. The box door safety locking device for the box-type substation, provided by the utility model, can prevent external personnel from mistakenly opening the box door under the condition of electrification and ensure the safety of external operators.

Description

Box door safety locking device of box-type substation

Technical Field

The utility model relates to the field of power distribution networks, in particular to a box door safety locking device for a box-type substation.

Background

The box-type substation is one of the most common devices in the power distribution network, is used as a connecting device between the power distribution network and a user, and the performance of the box-type substation is the guarantee of safe and stable operation of the power distribution network. There are many electrical devices in a box substation that require regular or irregular maintenance. Due to the high-voltage line in the box-type transformer substation, the operation safety is very important during maintenance.

Considering operating personnel's safety, the chamber door can't be opened when requiring box-type substation to be electrified usually, and can open the chamber door only when the outage, overhauls. At present, a box door of a box-type substation does not have a power failure indication or judgment function, so that an operator cannot judge whether the box-type substation is really powered off or in a safe operation state during operation.

Patent CN111058755A provides a box-type substation rolls up curtain formula emergency exit, can prevent to lead to the violent rotation of door when opening the door under weather such as strong wind, nevertheless can't realize the judgement whether the incasement cuts off the power supply. Patent CN213484270U provides a be used for switch board emergency exit device, when needs are opened the emergency exit, the handheld emergency exit of staff is drawn to the upper lift, drives gangbar and slide in the slip intracavity in step and slides, can extend the extension to the length of gangbar, has realized the support to the emergency exit, and the staff of being convenient for operates the use, has avoidd the not enough of the arbitrary dismouting of traditional emergency exit. However, the technologies related to the above patents do not have the function of power failure indication or power failure operation, and certain hidden troubles are brought to the overhaul of operators and the safe and stable operation of the box-type substation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a box-type substation box door safety locking device which can prevent external personnel from mistakenly opening a box door under the condition of electrification and ensure the safety of external operators.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a box door safety locking device for a box-type substation comprises an inner box door and an outer box door, wherein the inner box door and the outer box door are locked with a box body through electromagnetic safety locks; the electromagnetic safety lock comprises an armature, the armature is arranged on the box body in a sliding mode, and the upper end of the armature is connected with the box body through a spring; the lower end of the armature is opposite to an iron core on the box body, and a working coil and an indicating coil are wound on the iron core, wherein the working coil is connected into a control circuit in the box body, and an output signal of the indicating coil drives an indicating lamp to be bright and dark; one side of the armature is connected with the clamping column through a connecting rod, and a clamping ring is correspondingly arranged on the box door; when the working coil is in a power-on state, the clamping column moves downwards and is clamped with the clamping ring to form a locking structure.

And a door lock and a ventilation hole are arranged on the outer box door.

The inner box door is locked with the box body through a bolt up and down.

And the iron core is fixed with a sub-magnetic ring.

The utility model relates to a box door safety locking device of a box-type substation, which has the following technical effects:

1) the safety door of the box-type substation is formed by the electromagnetic safety lock based on the electromagnet principle and the box door, the electromagnet can work only under the condition of internal electrification, the electromagnetic safety lock is in a locking state at the moment, and the box door cannot be opened, so that the safety of operators can be effectively guaranteed. The existing safety door based on the travel switch cannot judge the working state, and once the reed fails, the power failure in the box can not be guaranteed when a worker operates the safety door. Compared with the existing safety door based on the travel switch, the safety performance of the technology provided by the utility model is higher.

2) The indicating coil is arranged beside the working coil on the iron core, so that the working state of the electromagnet can be accurately monitored under the condition that the size of the electromagnet part in the electromagnetic safety lock is not increased, and the electromagnet can work only when the equipment in the box is electrified, so that the result of the indicating coil also shows whether the equipment in the box is in electrified operation. Compared with the traditional electromagnet, the method can realize accurate monitoring of the working state of the electromagnet, is convenient for external workers to know the state of the safety door in real time, and further reminds the workers that the workers cannot carry out live-line operation in a mode of arranging the indicating lamp outside.

3) The first defense line is an indicator light, and when the red light is on, the interior of the box is electrified, so that the operation is not required by workers; the second defense line is a safety lock, and the safety lock can be opened only when the internal equipment is powered off, and the box door can be opened at the moment; the third line of defence is lock and bolt, and when the safety lock was opened, the staff needed to open lock and bolt further, and the side can open the door. Through the three-defense line design of the safety door, the operation safety is effectively ensured.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic view showing the position of the security gate on the housing in the present invention.

Fig. 2 is a front view of the inner box door of the present invention.

FIG. 3 is a front view of the outer bin door of the present invention.

FIG. 4 is a schematic view of the latch of the present invention.

FIG. 5 is a schematic diagram of the electromagnetic safety lock of the present invention.

In the figure: inner box door 1, outer box door 2, electromagnetic safety lock 3, pilot lamp 4, bolt 5, door handle 6, lock 7, ventilation hole 8, spring 9, armature 10, iron core 11, work coil 12, divide magnetic ring 13, connecting rod 14, card post 15, snap ring 16, pilot coil 17.

Detailed Description

As shown in fig. 1, a box-type substation box door safety locking device includes: the safe box comprises a box door (comprising an inner box door 1 and an outer box door 2), an electromagnetic safety lock 3, an indicator light 4 and the like.

As shown in fig. 1, an inner box door 1 and an outer box door 2 are installed on a box body of a box-type substation, and an electromagnetic safety lock 3 is installed on each of the inner box door 1 and the outer box door 2. When the two box doors are closed, the equipment in the box can be effectively protected, external personnel or small animals are prevented from entering the box by mistake, and the safe and stable operation of the box-type substation is guaranteed. The inner box door 1 is of a grid-shaped structure and is made of aluminum alloy materials; the outer box door is made of a composite board.

As shown in fig. 2 and 4, an upper bolt and a lower bolt 5 are mounted on the inner box door 1, and the bolts 5 are used for manually locking the inner box door on the box-type substation box body, so that the safety of an operator is further guaranteed, and the inner box door 1 is prevented from being automatically opened in the state that the electromagnetic safety lock is opened. The inner box door 1 is also provided with a door handle 6 for the worker to open and close the inner box door 1 conveniently.

As shown in fig. 3, the outer box door is provided with a door lock 7, the outer box door 2 can be locked by a key, and a vent hole 8 is arranged below the outer box door 2, so that the outer box door has the functions of heat insulation and ventilation.

As shown in fig. 5, the electromagnetic safety lock 3 is used to control the opening and closing of the door. The electromagnetic safety lock adopts a method based on an electromagnet principle, and the electromagnetic safety lock 3 comprises an alternating current electromagnet consisting of a spring 9, an armature 10, an iron core 11, a working coil 12 and a sub-magnetic ring 13. The sub-magnetic ring 13 can generate induced current and then generate induced magnetic flux, which makes the resultant magnetic flux of the main magnet passing through zero not equal to zero, thereby preventing the vibration phenomenon of the alternating-current electromagnet when the waveform of the working power supply passes through zero.

As shown in fig. 5, the lock control of the inner box door 1 is explained as an example, and when the equipment in the box is electrically operated, the power supply may be 380V or 220V by energizing the operating coil 12. After the power is switched on, the electromagnet works, and the armature 10 is attracted with the iron core 11. A connecting rod 14 is fixed on the armature 10, and the connecting rod 14 is connected with a clamping column 15. The snap ring 16 is fixed at the upper left position of the inner box door 1. The clamping column 15 and the clamping ring 16 form a locking structure, and the inner box door 1 and the box body are fixed together after being locked, so that an operator is prevented from being opened by mistake from the outside. An indicating coil 17 is wound in the iron core 11, and an output signal of the indicating coil 17 drives an indicating lamp 4 for indicating whether the equipment in the box is electrified or not. Indicator light 4 installs on the box, is located the chamber door top, makes things convenient for outside staff in time to observe whether equipment is electrified.

The working principle and the process are as follows: when the internal equipment of the box-type substation is electrified, the electromagnet working coil 12 is powered, the electromagnet works to generate attraction force, the armature 10 is attracted with the iron core 11, the clamping column 15 moves downwards and is embedded in the clamping ring 16, the electromagnetic safety lock is in a locking state, and the box door cannot be opened from the outside. Meanwhile, the indicating coil 17 works to drive the indicating lamp 4 to be red, so that the current equipment of a worker is reminded of being in a charged state and does not need to be operated in a charged state, and misoperation of an external operator under the condition of charging inside the box-type substation can be prevented. When the interior of the box-type substation is required to be overhauled, the box-type substation is powered off, the electromagnet does not work, the clamping column 15 is separated from the clamping ring 16, the electromagnetic safety lock 3 is opened at the moment, and an operator can normally open the door.

Claims

1. The utility model provides a box-type substation chamber door safety locking device which characterized in that: the refrigerator comprises an inner refrigerator door (1) and an outer refrigerator door (2), wherein the inner refrigerator door (1) and the outer refrigerator door (2) are locked with a refrigerator body through electromagnetic safety locks (3); the electromagnetic safety lock (3) comprises an armature (10), the armature (10) is arranged on the box body in a sliding mode, and the upper end of the armature (10) is connected with the box body through a spring (9); the lower end of the armature (10) is opposite to an iron core (11) on the box body, a working coil (12) and an indicating coil (17) are wound on the iron core (11), wherein the working coil (12) is connected into a control circuit in the box body, and an output signal of the indicating coil (17) drives the indicator light (4) to be bright and dark; one side of the armature (10) is connected with a clamping column (15) through a connecting rod (14), and a clamping ring (16) is correspondingly arranged on the box door; when the working coil (12) is in an electrified state, the clamping column (15) moves downwards and is clamped with the clamping ring (16) to form a locking structure.

2. The box-type substation box door safety locking device of claim 1, characterized in that: and a door lock (7) and a ventilation hole (8) are arranged on the outer box door (2).

3. The box-type substation box door safety locking device of claim 1, characterized in that: the inner box door (1) is locked with the box body up and down through a bolt (5).

4. The box-type substation box door safety locking device of claim 1, characterized in that: and a sub-magnetic ring (13) is fixed on the iron core (11).