CN204130930U - A kind of remote operation controls movable switching cabinet - Google Patents

Abstract

The utility model discloses a remote operation control mobile switchgear, which comprises a cabinet body. A main circuit and a control circuit are arranged in the cabinet. The input end of the switch is connected to the main power supply, and the cable socket is also connected to the external electrical equipment, wherein the current transformer is used to detect the connection between the cable socket and the electrical equipment, and control the conduction of the main circuit according to the connection Or disconnected, the control circuit includes a transformer connected to the output end of the isolating switch, the transformer is respectively connected to the control circuit load and the terminal block, the terminal block is connected to a group of indicator lights, and the terminal block is also connected to a button through a cable The switch is connected, and the button switch is located outside the cabinet, and is used to control the power on and off of the vacuum contactor. The utility model avoids electric shock and electric arc injury caused by the failure of the switch cabinet to the operator, and has high safety.

Description

A remote operation control mobile switchgear

technical field

The utility model relates to the technical field of switch cabinets, in particular to a remote operation control mobile switch cabinet.

Background technique

The mobile switch cabinet is a kind of stop and power transmission switch device specially configured for electric trackless mining equipment in non-coal underground mines. It is used to connect and disconnect the circuit between the mine underground substation and the electrical equipment. Its working process is that the substation inputs current into the mobile switchgear, and the mobile switchgear connects or cuts off the circuit to the electrical equipment according to the needs of the electrical equipment.

Since the use of trackless mining equipment in underground mines in China, the mobile switch cabinets used for electric trackless mining equipment mostly use 1000V power supply. For many years, the main problem of mobile switch cabinets in use is poor performance; the operation control handle is easy to operate. Damage; Leakage and short circuit protection functions are prone to failure. When the switchgear breaks down, many operators short-circuit the faulty line or electrical components of the switchgear in order to make the mining equipment run illegally, and some even short-circuit only the air switch or knife switch in the switchgear. Realize stop and power transmission; the most important problem is that the stop and power transmission of the mobile switch cabinet are controlled by the handle switch or button switch set on the cabinet door, the distance between the operator and the switch cabinet is close, and the electrical components inside the switch cabinet are damaged or the circuit, If a short circuit or leakage occurs in the electrical components, it is very easy to cause the operator to be injured by electric arc or electric shock, and there is a major safety hazard.

Utility model content

The utility model mainly solves the technical problems existing in the prior art, thereby providing a high-safety remote operation control mobile switchgear.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions:

The remote operation control mobile switch cabinet provided by the utility model includes a cabinet body, and a main circuit and a control circuit are arranged in the cabinet, and the main circuit includes an isolating switch, a vacuum contactor, a current transformer and a cable socket connected in sequence , the input end of the isolating switch is connected to the main power supply, and the cable socket is also connected to the external electrical equipment, wherein the current transformer is used to detect the connection between the cable socket and the electrical equipment, and according to The connection condition controls the conduction or disconnection of the main circuit, and the control circuit includes a transformer connected to the output end of the isolating switch, and the transformer is respectively connected to the load of the control circuit and the terminal block, and the terminal block It is connected with a group of indicator lights, and the terminal block is also connected with a button switch through a cable, and the button switch is located outside the cabinet, and is used to control the power-on and power-off of the vacuum contactor. electricity.

Further, the vacuum contactor includes a main contactor coil and a main contactor contact, the main contactor coil is controlled to be energized or de-energized by the button switch, and the main contactor coil controls the main contactor The closing or opening of the contactor contacts, and the closing or opening of the main contactor contacts are used to control the energization or de-energization of the cable socket.

Further, the indicator light includes a red power indicator light, a green power transmission indicator light and a yellow leakage indicator light, the power supply indicator light is used to indicate whether the switch cabinet has power input, and the power transmission indicator light is used to Indicates whether the switch cabinet has electrical output, and the leakage indicator light is used to indicate whether the main circuit has leakage.

Further, the power transmission indicator light is connected to the vacuum contactor, when the vacuum contactor is energized, the power transmission indicator light is on, and the leakage indicator light is also connected to the current transformer, When the current transformer detects an abnormality, the leakage indicator light is on.

Further, two first fuses are connected between the isolating switch and the transformer, and the output end of the transformer is connected with a second fuse.

Further, the size of the first fuse and the second fuse is 2A.

Further, the cable is a three-phase flame-retardant mine cable with a withstand voltage of 240V, a diameter of φ10mm, and a length of 5-10m.

Further, the length, width and height of the cabinet are 600mm, 500mm and 250mm respectively.

The beneficial effect of the utility model lies in: the operator is kept away from the switch cabinet at a certain safe distance and uses the button switch to realize stop and power transmission, so as to avoid electric shock and arc damage caused by the fault of the switch cabinet to the operator. And through the connection between the current transformer and the cable socket, the plug protection is realized. When the external electrical equipment is not plugged in, the mobile power cabinet cannot be powered on. At the same time, once a fault occurs, the power supply cannot be cut off by short circuit Electricity must be detected and repaired before it can be used, and its safety is relatively high.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of remote operation control mobile switchgear of the present utility model;

Fig. 2 is a schematic circuit diagram of the remote operation control mobile switch cabinet of the present invention.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, so as to make a clearer definition of the protection scope of the utility model.

Referring to Fig. 1, the remote operation control mobile switchgear of the present utility model includes a cabinet body 1, and a main circuit and a control circuit are arranged in the cabinet body 1, and the main circuit includes an isolating switch 2, a vacuum contactor 3, The current transformer 4 and the cable socket 5, the input end of the isolating switch 2 is connected with the main power supply 6, and the cable socket 5 is also connected with the external electrical equipment 7, wherein the current transformer 4 is used to detect the connection between the cable socket 5 and the power supply. The connection of the equipment 7, and control the conduction or disconnection of the main circuit according to the connection. The control circuit includes a transformer 8 connected to the output end of the isolating switch 2. The transformer 8 is connected to the control circuit load 9 and the terminal block 10 respectively. connected, the terminal block 10 is connected with a group of indicator lights, and the terminal block 10 is also connected with a button switch 12 through a cable 11, the button switch 12 is located outside the cabinet 1, and is used to control the vacuum contactor 3 Power on and off. The utility model realizes stop and power transmission by using the button switch 12 to keep the operator away from the switch cabinet at a certain safe distance, so as to avoid the electric shock and arc damage caused by the failure of the switch cabinet to the operator. And through the connection between the current transformer 4 and the cable socket 5, the plug protection is realized. When the external electrical equipment 7 is not plugged in, the mobile power supply cabinet cannot be powered on. It must be tested and repaired before it can be used when the power is disconnected, and its safety is relatively high. In the utility model, the isolating switch 2 has a door interlock function. When the switch is turned off, the cabinet door is opened, and all loads connected to the output end can be completely isolated except the input end is charged. Setting isolating switch 2 is mainly used for maintenance and inspection of the switchgear.

Specifically, the vacuum contactor 3 includes a main contactor coil 31 and a main contactor contact 32, the main contactor coil 31 controls its power-on or power-off through the button switch 12, and the main contactor coil 31 controls the main contactor contact 32 The closing or opening, and the closing or opening of the main contactor contact 32 are used to control the energization or de-energization of the cable socket 5 . The indicator lights include a red power indicator light 13, a green power transmission indicator light 14 and a yellow leakage indicator light 15. The power supply indicator light 13 is used to indicate whether the switch cabinet has electric input, and the power transmission indicator light 14 is used to indicate whether the switch cabinet is There is electric output, and leakage indicator light 15 is used for indicating whether there is leakage in the main circuit. The power transmission indicator 14 is connected with the vacuum contactor 3. When the vacuum contactor 3 is energized, the power transmission indicator 14 is on, and the leakage indicator 15 is also connected with the current transformer 4. When the current transformer 4 detects an abnormality , the leakage indicator light 14 is on.

Preferably, two first fuses 16 are connected between the isolating switch 2 and the transformer 8 in order to protect the electrical components above the transformer 8 and the electrical facilities. In order to protect the transformer 8 and facilitate maintenance and repair, the output end of the transformer is connected with a second fuse 17 . Wherein, the size of the first fuse 16 and the second fuse 17 is 2A. Cable 11 is a three-phase mine flame-retardant cable with a withstand voltage of 240V, a diameter of φ10mm, and a length of 5-10m. The length, width and height of the cabinet body 1 are 600mm, 500mm and 250mm respectively. The minimum volume of the mobile switchgear in the prior art is 600mm×800mm×220mm. In contrast, the volume of the utility model is reduced and it is easy to carry. And it is not easy to be hit by other operating equipment in the mine, which saves time and effort in maintenance and installation.

Referring to shown in Fig. 2, the operating principle of the present utility model is:

1. Close the isolating switch 2, the power indicator light 13 is on, and the coil 41 of the current transformer 4 is energized.

2. After the current transformer 4 is detected to be normal, plug in the plug of the electrical equipment 7, press the SB2 key in the button switch 12, the main contactor coil 31 is energized, the vacuum contactor 3 is normally open and closed, and the power transmission indicator light 14 is on, the vacuum contactor 3 is normally open and closed and self-locking, the main contactor contact 32 of the vacuum contactor 3 is closed, and power is transmitted.

3. When the current transformer 4 detects an abnormality, the current transformer 4 is normally open and closed, the fault indicator light 15 is on, the vacuum contactor 3 is de-energized, the main contactor contact 32 is disconnected, and the power transmission stops.

4. Press the SB1 key in 12 of the button switch, the main contactor coil 31 loses power, the vacuum contactor 3 is normally open and disconnected, the power transmission indicator 14 goes out, and the power transmission is stopped.

The above are only specific implementations of the present utility model, but the protection scope of the present utility model is not limited thereto, and any changes or replacements that do not go through creative labor should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (8)

1. A remote operation control mobile switchgear, comprising a cabinet (1), the cabinet (1) is provided with a main circuit and a control circuit, it is characterized in that: the main circuit includes sequentially connected isolating switches ( 2), vacuum contactor (3), current transformer (4) and cable socket (5), the input end of described isolating switch (2) is connected with main power supply (6), and described cable socket (5) also It is connected with external electrical equipment (7), wherein the current transformer (4) is used to detect the connection between the cable socket (5) and the electrical equipment (7), and control the main The conduction or disconnection of the loop, the control loop includes a transformer (8) connected to the output end of the isolating switch (2), and the transformer (8) is connected to the control loop load (9) and the terminal block ( 10) are connected, the terminal block (10) is connected with a group of indicator lights, and the terminal block (10) is also connected with a button switch (12) through a cable (11), and the button switch ( 12) It is located outside the cabinet (1), and is used to control the power-on and power-off of the vacuum contactor (3). 2. The remote operation control mobile switch cabinet according to claim 1, characterized in that: the vacuum contactor (3) includes a main contactor coil (31) and a main contactor contact (32), the main contactor The contactor coil (31) is controlled to be energized or de-energized through the button switch (12), the main contactor coil (31) controls the closing or opening of the main contactor contact (32), and the main contactor Closing or opening of the contactor contacts (32) is used to control the energization or de-energization of the cable socket (5). 3. The remote operation control mobile switchgear according to claim 2, characterized in that: the indicator lights include a red power indicator light (13), a green power transmission indicator light (14) and a yellow leakage indicator light (15), the power indicator light (13) is used to indicate whether the switch cabinet has electric input, and the power transmission indicator light (14) is used to indicate whether the switch cabinet has electric output, and the leakage indicator light (15) is used To indicate whether there is leakage in the main circuit. 4. The remote operation control mobile switch cabinet according to claim 3, characterized in that: the power transmission indicator light (14) is connected to the vacuum contactor (3), when the vacuum contactor (3) ) when energized, the power transmission indicator light (14) is bright, and the leakage indicator light (15) is also connected with the current transformer (4), when the current transformer (4) detects abnormality , the leakage indicator light (14) is bright. 5. The remote operation control mobile switch cabinet according to claim 1, characterized in that: two first fuses (16) are connected between the isolating switch (2) and the transformer (8), and the transformer The output terminal of is connected with the second fuse (17). 6. The remote operation control mobile switch cabinet according to claim 5, characterized in that: the size of the first fuse (16) and the second fuse (17) is 2A. 7. The remote operation control mobile switchgear according to claim 1, characterized in that: the cable (11) is a three-phase mine flame-retardant cable with a withstand voltage of 240V, a diameter of φ10mm, and a length of 5- 10m. 8. The remote operation control mobile switch cabinet according to claim 1, characterized in that: the length, width and height of the cabinet body (1) are 600mm, 500mm and 250mm respectively.