CN216903862U

CN216903862U - Capacitor box with safety protection function

Info

Publication number: CN216903862U
Application number: CN202220457636.9U
Authority: CN
Inventors: 陈赛
Original assignee: Nomer Electric Suzhou Co ltd
Current assignee: Nomer Electric Suzhou Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-05
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a capacitor cabinet with a safety protection function, which consists of a cabinet body and a panel, wherein an isolating switch, a secondary circuit, a contactor, a reactor and a capacitor are sequentially arranged in the cabinet body from top to bottom, a PLC (programmable logic controller), a power factor controller, a change-over switch, a state indicator lamp and a lamp button of the capacitor are sequentially arranged on the panel from top to bottom, a micro switch is arranged on the isolating switch, the PLC is electrically connected with the micro switch, and an alarm module is also arranged on the PLC. Through the mode, the utility model can effectively prevent arc discharge accidents caused by mistakenly touching the switch, reduce the phenomenon of fuse fusing caused by virtual connection overheating, and can detect fire accidents in time by the smoke detector on the top of the cabinet.

Description

Capacitor box with safety protection function

Technical Field

The utility model relates to the field of electrical equipment, in particular to a capacitor cabinet with a safety protection function.

Background

Because most load types in the power system belong to inductive loads, and power electronic equipment is widely used by power utilization enterprises, the power factor of a power grid is low, the utilization rate of the equipment is poor, the line loss is increased, the voltage quality is damaged, and the service life of the equipment is shortened. In order to solve this problem, it is a common practice to connect a capacitor box in the power system to balance the load, improve the power factor, and increase the utilization efficiency of the equipment. But the capacitor box sometimes can lead to the switch mistouch because of operating personnel's error under environments such as maintenance in the use, because isolator itself does not have the arc extinction function, only the contactor has the arc extinction function, therefore the switch mistouch arouses very easily to draw the arc to hurt people's accident.

Disclosure of Invention

The utility model mainly solves the technical problem of providing a capacitor cabinet, which can prevent a maintainer from damaging personal safety by mistakenly touching a switch.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a capacitor box with safety protection function, capacitor box with safety protection function comprises the cabinet body and panel, isolator, secondary circuit, contactor, reactor and condenser are installed in proper order to the internal portion from the top down of cabinet, and PLC controller, power factor controller, change over switch, status indicator lamp and condenser area lamp button are installed in proper order to the panel from the top down, the last micro-gap switch of installing of isolator, the PLC controller with the micro-gap switch electrical property links to each other, still be provided with alarm module on the PLC controller.

In a preferred embodiment of the utility model, an arc detector is further installed in the capacitor cabinet with the safety protection function, and the arc detector is electrically connected with the PLC controller. The number of the arc detectors is two, and the two arc detectors are respectively a first arc detector arranged at the upper part of the capacitor cabinet with the safety protection function and a second arc detector arranged at the lower part of the capacitor cabinet with the safety protection function. The first arc detector is installed on the electric installation frame on the inner side of the panel and is close to the installation height of the isolating switch, and the second arc detector is installed on the electric installation frame in the cabinet body and is located between the installation positions of the capacitor and the reactor.

In a preferred embodiment of the present invention, the status indicator lights include a manual mode indicator light, an automatic mode indicator light and an alarm indicator light, the manual mode indicator light, the automatic mode indicator light and the transfer switch are electrically connected, and the alarm indicator light and the alarm module of the PLC controller are electrically connected.

In a preferred embodiment of the present invention, the alarm indicator lights are two in total, one is an arc/smoke sensing action warning light, and the other is an abnormality detection action warning light.

In a preferred embodiment of the utility model, a smoke alarm is further mounted on the top of the cabinet body, and the smoke alarm is electrically connected with the alarm module of the PLC.

In a preferred embodiment of the utility model, the secondary circuit is mounted on a side wall of the cabinet at a height between the isolating switch and the contactor.

The utility model has the beneficial effects that: according to the utility model, the microswitch is arranged in the common isolating switch and is connected with the PLC, on one hand, if the fault that a worker touches the isolating switch by mistake occurs when the capacitor cabinet normally operates, the microswitch can quickly transmit a signal to the PLC, and the PLC controls the contactor to break away in advance, so that the accident that people are injured by arc discharge is effectively prevented, on the other hand, the microswitch can effectively monitor whether the isolating switch is closed, and the isolating switch cannot start the corresponding capacitor when not closed, and can send an alarm signal to the PLC to remind field personnel, so that the fuse in the isolating switch is effectively prevented from being heated and fused due to virtual connection.

Drawings

FIG. 1 is a schematic diagram of the arrangement of the internal components of a preferred embodiment of the present invention;

the parts in the drawings are numbered as follows:

1. the intelligent alarm cabinet comprises a cabinet body, a panel, a disconnecting switch, a contactor, a reactor, a capacitor, a circuit controller, a PLC (programmable logic controller), a power factor controller, a first arc light detector, a second arc light detector, a smoke alarm, a change-over switch, an arc light/smoke sensing action warning lamp, an automatic mode indicator lamp, a manual mode indicator lamp and an abnormality detection action warning lamp, wherein the panel is 2, the panel is 3, the contactor is 4, the reactor is 5, the capacitor is 6, the circuit controller is 7, the PLC controller is 8, the power factor controller is 9, the first arc light detector is 10, the second arc light detector is 11, the smoke alarm is 12, the change-over switch is 13, the arc light/smoke sensing action warning lamp is 14, the automatic mode indicator lamp is 15, the manual mode indicator lamp is 16, the abnormality detection action warning lamp is 17, and the lamp button is 18.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to fig. 1, an embodiment of the present invention includes:

the utility model provides an electric capacity cabinet with safety protection function, electric capacity cabinet with safety protection function comprises the cabinet body 1 and panel 2, isolator 3, secondary circuit 7, contactor 4, reactor 5 and condenser 6 are installed in proper order to the inside from the top down of the cabinet body 1, and wherein secondary circuit 7 installs on one side lateral wall of the cabinet body 1, highly be located between isolator and the contactor, effectively improve 1 space utilization of the cabinet body. The panel is provided with a PLC (programmable logic controller) 8, a power factor controller 9, a change-over switch 13, a state indicator lamp and a lamp button 18 of a capacitor from top to bottom in sequence, wherein 5 compensation circuits are provided, and the number of the corresponding capacitor 6, the isolating switch 3, the contactor 4, the reactor 5 and the lamp button 18 is five.

The status indicator lamps comprise a manual mode indicator lamp 16, an automatic mode indicator lamp 15 and an alarm indicator lamp, and the manual mode indicator lamp 16, the automatic mode indicator lamp 15 and the change-over switch 13 are electrically connected. When change over switch 13 switches over, corresponding pilot lamp can be opened, through the pilot lamp of opening, field personnel can directly judge whether whole electric capacity cabinet is in manual operation or automatic operation, prevent misjudgement, the alarm pilot lamp is total two, one is arc light \ smoke sense action warning light 14, one is that unusual inspection action warning light 17, two alarm lamps all with PLC controller's alarm module electric connection, wherein arc light \ smoke sense action warning light 14 corresponds arc light and smog problem, and unusual inspection action warning light 17 corresponds is the problem that the maloperation produced, when the trouble takes place, field personnel can directly find the root cause of the problem according to corresponding alarm lamp.

Wherein all install on every isolator 3 with the micro-gap switch that PLC controller 8 is connected, through this kind of mode, 3 when field work personnel mistake touches isolator, micro-gap switch can be to PLC controller 8 signals, breaks away from the contact fast in advance by PLC controller 8 control contactor 4, and the circuit cuts off because contactor 4 itself has the arc extinction function, therefore can prevent effectively that electric arc from appearing, avoids the field personnel injured. When the isolating switch 3 is closed, the microswitch can also effectively monitor whether the isolating switch 3 is closed, when the isolating switch 3 is not closed, the corresponding capacitor 6 is not started, an alarm signal is sent to the PLC, the alarm module of the PLC 8 controls the corresponding abnormity detection action warning lamp 17 to work, the field worker is reminded to check, the fuse wire in the isolating switch 3 is prevented from being heated and fused due to virtual connection, even accidents occur, and therefore the overall safety and reliability of the capacitor cabinet are improved.

Smoke alarm 12 is still installed to cabinet body 1 top inboard, smoke alarm 12 and PLC controller 8's alarm module electric connection, smoke alarm 12 can in time discover the scorching problem that the interior components and parts of cabinet are overheated to arouse, sends alarm signal self and sends the police dispatch newspaper through alarm module control corresponding arc light \ smoke and feel action warning light 16 when, reminds field personnel to overhaul, effectively prevents the problem expansion.

Still install arc light detector in the capacitor box with safety protection function, arc light detector with 8 electric connection of PLC controller. The number of the arc detectors is two, and the two arc detectors are respectively a first arc detector 10 arranged at the upper part of the capacitor cabinet with the safety protection function and a second arc detector 11 arranged at the lower part of the capacitor cabinet with the safety protection function. The first arc detector 10 is mounted on an electrical mounting frame inside the panel 2 and is close to the mounting height of the isolating switch 3, and the second arc detector 11 is mounted on the electrical mounting frame inside the cabinet 1 and is located between the mounting positions of the capacitor 6 and the reactor 5. Through two arc light detectors, can be to the inside two regional instant monitoring that produce the arc light problem easily of condenser, take place the short circuit scheduling problem and can in time discover when arbitrary position to give PLC controller 8 with signal transmission, by PLC controller 8's alarm module control arc light \ smoke and feel action warning light 14 and send alarm signal, remind the field personnel to overhaul, prevent that the accident from expanding, influence equipment life.

This capacitor box can adjust the parameter of power factor controller 9 as required, then uses PLC controller 8 to control whole electric power system automatic compensation, realizes load balance, can in time discover and get rid of the operational failure in the operation of capacitor box, has good on-the-spot safeguard measure moreover, can effectively prevent to overhaul and to appear the electric arc in the inspection process and hinder people's accident.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a capacitor box with safety protection function, capacitor box with safety protection function comprises the cabinet body and panel, isolator, secondary circuit, contactor, reactor and condenser are installed in proper order to the internal portion from the top down of cabinet, the lamp button of taking of PLC controller, power factor controller, change over switch, status indicator and condenser is installed in proper order to the panel from the top down, its characterized in that, install micro-gap switch on the isolator, the PLC controller with the micro-gap switch electrical property links to each other, still be provided with alarm module on the PLC controller.

2. The capacitor box with the safety protection function as claimed in claim 1, wherein an arc detector is further installed in the capacitor box with the safety protection function, and the arc detector is electrically connected with the PLC controller.

3. The safety-protected capacitor box of claim 2, wherein there are two arc detectors, a first arc detector disposed at an upper portion of the safety-protected capacitor box and a second arc detector disposed at a lower portion of the safety-protected capacitor box.

4. The safety protected capacitor box of claim 3, wherein the first arc detector is mounted on the electrical mounting rack inside the panel at a height close to the isolator mounting height, and the second arc detector is mounted on the electrical mounting rack inside the box body between the capacitor and reactor mounting locations.

5. The capacitor cabinet with the safety protection function according to claim 1, wherein the status indicator light comprises a manual mode indicator light, an automatic mode indicator light and an alarm indicator light, the manual mode indicator light and the automatic mode indicator light are electrically connected with the transfer switch, and the alarm indicator light is electrically connected with the alarm module of the PLC controller.

6. The capacitor box with the safety protection function as claimed in claim 5, wherein the number of the alarm indicator lamps is two, one is an arc/smoke sensing action warning lamp, and the other is an abnormality detection action warning lamp.

7. The capacitor cabinet with the safety protection function as claimed in claim 1, wherein a smoke alarm is further installed at the top of the cabinet body, and the smoke alarm is electrically connected with the alarm module of the PLC controller.

8. The capacitor cabinet with the safety protection function according to claim 1, wherein the secondary circuit is mounted on a side wall of the cabinet body at a height between the isolation switch and the contactor.