CN106451094A - Fireproof and explosion-proof capacitance compensation cabinet with high security - Google Patents

Abstract

The invention discloses a fire-proof and explosion-proof high-safety capacitor compensation cabinet, which comprises a cabinet body; the cabinet body is divided into an upper cabinet body and a lower cabinet body by a partition; There are pressure relief holes around the cover, and the pressure relief cover is fixed on the cabinet body through the bolts at the four corners. The bolts pass through the bolt installation holes on the cabinet body and are fixed by nuts. A first spring is arranged between the nuts and the inner wall of the cabinet; The side of the cabinet is provided with an explosion-proof heat dissipation mechanism, which includes a heat dissipation array hole and an explosion-proof baffle. A second spring is arranged between the inner wall of the cabinet and the cabinet. The capacitor compensation cabinet has good heat dissipation performance, and the pressure relief problem inside the capacitor compensation cabinet is solved through the pressure relief cover, and the explosion-proof heat dissipation mechanism can avoid damage to surrounding equipment or operators, and has high safety.

Description

Fire-proof and explosion-proof high-safety capacitor compensation cabinet

technical field

The invention relates to the technical field of electric power equipment, in particular to a fireproof and explosion-proof capacitor compensation cabinet with high safety.

Background technique

Most of the load types in the power system are inductive loads, coupled with the widespread use of power electronic equipment by power companies, the power factor of the grid is low, and the low power factor reduces the utilization of equipment, increases power supply investment, and damages The voltage quality reduces the service life of the equipment and greatly increases the line loss. In order to improve the energy waste caused by the low power factor of the power grid and the unfavorable factors for power supply production, it is necessary to use a capacitor compensation cabinet to improve the power factor. The frequency of use is high, and it is easy to cause high temperature and fire. Existing capacitance compensation cabinets cannot extinguish the fire in the bud, and it is easy to cause greater losses. In addition, there are a large number of electronic components inside the capacitor compensation cabinet, which will generate a lot of heat during operation; during normal operation, the heat will be dissipated through the cooling holes on the capacitor compensation cabinet. However, once the internal components of the capacitor compensation cabinet fail, a large amount of heat and pressure will be generated. The heat dissipation holes on the capacitor compensation cabinet cannot quickly release the energy inside the cabinet, which may cause the explosion of the capacitor compensation cabinet. Huge security risks and economic losses.

Contents of the invention

The object of the present invention is to provide a fire-proof and explosion-proof capacitor compensation cabinet with high safety, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A fire-proof and explosion-proof high-safety capacitor compensation cabinet, including a cabinet body; The front end of the cabinet body is provided with an upper cabinet door and a lower cabinet door. The upper cabinet door is provided with a transfer switch, a reactive power meter, an ammeter, a power factor meter, a reactive power compensation controller and a knife fuse switch interface. A number of indicator lights are evenly spaced on the cabinet door; a pressure relief cover is provided on the top of the cabinet, and pressure relief holes are provided around the pressure relief cover, and the pressure relief cover is fixed on the cabinet by bolts at the four corners. There are bolt installation holes corresponding to the bolts, the bolts pass through the bolt installation holes and are fixed by nuts, and a first spring is arranged between the nuts and the inner wall of the cabinet; the side of the cabinet is provided with an explosion-proof heat dissipation mechanism, and the explosion-proof heat dissipation mechanism includes The heat dissipation array holes opened on the outer side of the cabinet and the explosion-proof baffle installed inside the cabinet, the explosion-proof baffle is hingedly installed on the inside of the cabinet, and the explosion-proof baffle completely covers the heat dissipation array holes, the lower end of the explosion-proof baffle and the inside of the cabinet A second spring is disposed between the walls.

As a further solution of the present invention: there are four pressure relief covers in total, and they are quadrilaterally arranged on the top of the cabinet.

As a further solution of the present invention: there are four explosion-proof heat dissipation mechanisms, two of which are respectively arranged on both sides of the upper cabinet, and the other two are respectively arranged on both sides of the lower cabinet.

As a further solution of the present invention: the upper cabinet is provided with a knife fuse switch and a current transformer, the knife fuse switch is located above the current transformer, and the lower cabinet is provided with a miniature circuit breaker, an AC contactor, a thermal relay and AC capacitor.

As a further solution of the present invention: the upper cabinet and the lower cabinet are provided with temperature sensors, smoke sensors and fire extinguishers, the fire extinguisher is provided with a nozzle, the end of the nozzle is provided with a nozzle, and the nozzle is provided with a solenoid valve ; The cabinet is also provided with a controller, and the temperature sensor, the smoke sensor and the solenoid valve are all connected to the controller.

As a further solution of the present invention: a power module is arranged in the cabinet, and the power module is electrically connected to the controller.

As a further solution of the present invention: the fire extinguisher is a dry powder fire extinguisher, and the nozzle is a rotary nozzle.

As a further solution of the present invention: the fire extinguisher is also provided with a pressure gauge.

As a further solution of the present invention: an alarm is installed on the top of the cabinet, and the alarm is electrically connected to the controller.

As a further solution of the present invention: the alarm is an audible and visual alarm.

Compared with prior art, the beneficial effect of the present invention is:

1. The capacitor compensation cabinet has good heat dissipation performance, and the pressure relief problem inside the capacitor compensation cabinet is solved through the pressure relief cover. When the capacitor compensation cabinet fails and generates huge energy and pressure, the capacitor compensation can be compensated through the pressure relief cover. The pressure in the cabinet is released quickly, avoiding the danger of capacitor compensation cabinet explosion and reducing economic losses. In the process, the explosion-proof heat dissipation mechanism can avoid damage to surrounding equipment or operators, and has high safety;

2. The capacitance compensation cabinet can extinguish the fire when the cabinet body catches fire, and eliminate the fire in the bud. At the same time, it will also send an alarm through the alarm to remind the operator, with high safety.

Description of drawings

Fig. 1 is a structural schematic diagram of a fireproof and explosion-proof high-safety capacitor compensation cabinet when it is closed.

Fig. 2 is a structural schematic diagram of the fireproof and explosion-proof high-safety capacitor compensation cabinet when it is opened.

FIG. 3 is a schematic diagram of a partially enlarged structure at A in FIG. 1 .

Fig. 4 is a structural schematic diagram of a fire extinguisher in a fire-proof and explosion-proof high-safety capacitor compensation cabinet.

Fig. 5 is a schematic diagram of the electrical connection of the fire-proof and explosion-proof high-safety capacitor compensation cabinet.

In the figure: 1-cabinet body, 2-lower cabinet door, 3-radiation array hole, 4-indicator light, 5-upper cabinet door, 6-transfer switch, 7-reactive power meter, 8-ammeter, 9-discharge Pressure cover, 10-pressure relief hole, 11-alarm, 12-power factor meter, 13-reactive power compensation controller, 14-knife fuse switch interface, 15-bolt, 16-first spring, 17-nut, 18 -temperature sensor, 19-smoke sensor, 20-upper cabinet, 21-fire extinguisher, 22-hinge, 23-explosion-proof baffle, 24-second spring, 25-knife fuse switch, 26-current transformer, 27- Lower cabinet, 28-miniature circuit breaker, 29-AC contactor, 30-thermal relay, 31-AC capacitor, 32-controller, 33-pressure gauge, 34-solenoid valve, 35-nozzle, 36-nozzle, 37 - Power module.

detailed description

The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

Please refer to Figures 1-5, a fireproof and explosion-proof high-safety capacitance compensation cabinet, including a cabinet body 1; the cabinet body 1 is divided into an upper cabinet body 20 and a lower cabinet body 27 by a partition, and the partition board is set There are a plurality of through holes, so that the upper cabinet body 20 and the lower cabinet body 27 are connected, and the upper cabinet body 20 and the lower cabinet body 27 front ends are correspondingly provided with an upper cabinet door 5 and a lower cabinet door 2, and the upper cabinet door 5 is provided with a transfer switch 6, a reactive power meter 7, an ammeter 8, a power factor meter 12, a reactive power compensation controller 13 and a knife melting switch interface 14, and the lower cabinet door 2 is equipped with a plurality of indicator lights at even intervals 4. It is used to indicate the working status of the capacitor compensation cabinet;

The top of the cabinet 1 is provided with a pressure relief cover 9, and pressure relief holes 10 are arranged around the pressure relief cover 9. Under normal conditions, the pressure relief holes 10 around the pressure relief cover 9 help the internal ventilation and heat dissipation of the capacitor compensation cabinet, reducing the The probability of internal failure, the pressure relief cover 9 is fixed on the cabinet body 1 through the bolts 15 at the four corners, and the cabinet body 1 is provided with bolt installation holes corresponding to the bolts 15, and the bolts 15 pass through the bolt installation holes and pass through the cabinet body 1. The nut 17 is fixed, and the first spring 16 is arranged between the nut 17 and the inner wall of the cabinet body 1. When the equipment breaks down and generates huge energy and pressure, the internal pressure will impact the pressure relief cover 9, because the pressure relief cover 9 and the cabinet body 1 The connecting bolt 15 is provided with a first spring 16, so the pressure relief cover 9 can be pushed up and opened by a large pressure, so as to ensure that the pressure in the capacitor compensation cabinet can be released quickly and avoid the explosion of the capacitor compensation cabinet risk, reduce economic loss, when the pressure is released, under the action of the first spring 16, the pressure relief cover 9 resets, the number and position of the pressure relief cover 9 are not limited, in actual application, it can be set according to the demand , in this embodiment, preferably, there are four pressure relief covers 9, and they are quadrilaterally arranged on the top of the cabinet body 1;

The side of the cabinet body 1 is provided with an explosion-proof heat dissipation mechanism. The explosion-proof heat dissipation mechanism includes a heat dissipation array hole 3 provided on the outer surface of the cabinet body 1 and an explosion-proof baffle plate 23 installed on the inside of the cabinet body 1. The explosion-proof baffle plate 23 is hinged by a hinge 22. Installed inside the cabinet 1, and the explosion-proof baffle 23 completely covers the heat dissipation array hole 3, and a second spring 24 is arranged between the lower end of the explosion-proof baffle 23 and the inner wall of the cabinet 1. Under normal conditions, under the elastic force of the second spring 24 , there is a gap between the explosion-proof baffle 23 and the inner wall of the cabinet body 1, so that the air can circulate through the heat dissipation array holes 3. When the capacitor compensation cabinet works seriously abnormally, the hot air will impact the explosion-proof baffle 23, so that the second spring 24 is compressed, the explosion-proof baffle 23 is close to the inner wall of the cabinet body 1, and the heat dissipation array hole 3 is closed, so that the hot air is only discharged through the pressure relief cover 9 on the top of the cabinet body 1, thereby preventing hot air from rushing out of the heat dissipation array hole 3 To cause harm to surrounding equipment or operators, even if a small amount of gas rushes out of the heat dissipation array hole 3, it will be directed to the ground by the heat dissipation array hole 3 with the opening downward; the number and position of the explosion-proof heat dissipation mechanism are set according to the demand, In this embodiment, preferably, there are four explosion-proof heat dissipation mechanisms, two of which are respectively arranged on both sides of the upper cabinet body 20, and the other two are respectively arranged on both sides of the lower cabinet body 27. Therefore, the upper cabinet body 20 and the lower cabinet body 27 respectively correspond to two explosion-proof heat dissipation mechanisms, through the cooperative work of the two explosion-proof heat dissipation mechanisms on both sides, the ventilation and heat dissipation effects of the upper cabinet body 20 and the lower cabinet body 27 are enhanced, and the upper cabinet body 20 and the lower cabinet body 27 are avoided. The electrical components in the cabinet body 27 affect their service life due to their long-term high-temperature state, thereby prolonging the service life of the capacitor compensation cabinet;

The upper cabinet 20 is provided with a knife fuse switch 25 and a current transformer 26, the knife fuse switch 25 is located above the current transformer 26, and the lower cabinet 27 is provided with a miniature circuit breaker 28, an AC contactor 29, a thermal Relay 30 and AC capacitor 31;

The upper cabinet body 20 and the lower cabinet body 27 are equipped with a temperature sensor 18, a smoke sensor 19 and a fire extinguisher 21, the fire extinguisher 21 is provided with a nozzle 35, the end of the nozzle 35 is provided with a nozzle 36, and the nozzle 35 is provided with There is a solenoid valve 34, open the solenoid valve 34, and the fire extinguishing agent in the fire extinguisher 21 is sprayed into the cabinet 1 through the nozzle 35 and the nozzle 36 to realize the fire extinguishing function. In this embodiment, preferably, the fire extinguisher 21 is a dry powder fire extinguisher. The nozzle 36 is a rotating nozzle, which enhances the fire extinguishing effect. In order to monitor the pressure in the fire extinguisher 21 and avoid insufficient pressure of the fire extinguisher 21, a pressure gauge 33 is also arranged on the fire extinguisher 21; a controller is also arranged in the cabinet 1 32. The temperature sensor 18, the smoke sensor 19 and the solenoid valve 34 are all connected to the controller 32. When there is a fire in the cabinet 1, the temperature sensor 18 and the smoke sensor 19 detect an abnormal temperature or a smoke signal, and send a signal to the controller 32. The controller 32 controls the solenoid valve 34 to open, and puts out the fire through the fire extinguisher 21 to eliminate the fire in the bud. When the capacitor compensation fires, it may cause the capacitor compensation cabinet to be powered off. In order to avoid the failure of the fire protection mechanism due to power failure, this In the invention, the cabinet body 1 is provided with a power supply module 37, which is electrically connected to the controller 32, and supplies power to the fire protection mechanism through the power supply module 37, thereby not relying on the power supply system of the capacitor compensation cabinet, and improving safety;

An alarm 11 is also installed on the top of the cabinet 1, and the alarm 11 is electrically connected to the controller 32. When the capacitor compensation cabinet catches fire, the controller 32 will also control the alarm 11 to give an alarm when the fire extinguisher 21 is activated to extinguish the fire. , to remind the operator that in this embodiment, the alarm 11 is an audible and visual alarm.

The working principle of the present invention is: the fire-proof and explosion-proof high-safety capacitor compensation cabinet, under the normal state, under the elastic force of the second spring 24, there is a gap between the explosion-proof baffle plate 23 and the inner wall of the cabinet body 1, so that the air can It circulates through the heat dissipation array holes 3, and through the pressure relief holes 10 around the pressure relief cover 9, it helps the internal ventilation and heat dissipation of the capacitor compensation cabinet, reducing the probability of internal failure. When the capacitor compensation cabinet works seriously abnormally and generates huge energy and pressure , the internal pressure will impact the pressure relief cover 9, because the first spring 16 is arranged on the bolt 15 connecting the pressure relief cover 9 and the cabinet body 1, so the pressure relief cover 9 can be lifted and opened by a relatively large pressure, thereby Ensure that the pressure in the capacitor compensation cabinet can be released quickly, avoid the risk of explosion in the capacitor compensation cabinet, and reduce economic losses. After the pressure is released, under the action of the first spring 16, the pressure relief cover 9 resets, and the During the process, the internal pressure will impact the explosion-proof baffle 23, so that the second spring 24 is compressed, the explosion-proof baffle 23 is close to the inner wall of the cabinet 1, and the heat dissipation array holes 3 are closed, so that the hot air only passes through the top of the cabinet 1. The pressure relief cover 9 is discharged to prevent the hot air from rushing out of the heat dissipation array holes 3 and causing damage to surrounding equipment or operators. Even if a small amount of gas rushes out of the heat dissipation array holes 3, it will be guided by the downward opening heat dissipation array holes 3 ground. When a fire breaks out in the cabinet 1, the temperature sensor 18 and the smoke sensor 19 detect an abnormal temperature or a smoke signal, and will send a signal to the controller 32, and the controller 32 controls the solenoid valve 34 to open, and the fire extinguisher 21 is used to extinguish the fire, and the fire is eliminated in the Bud.

The fire-proof and explosion-proof high-safety capacitor compensation cabinet has good heat dissipation performance, and the pressure relief problem inside the capacitor compensation cabinet is solved through the pressure relief cover. When the capacitor compensation cabinet fails and generates huge energy and pressure, the pressure relief The cover can quickly release the pressure in the capacitor compensation cabinet, avoiding the danger of explosion of the capacitor compensation cabinet and reducing economic losses. In the process, the explosion-proof heat dissipation mechanism can avoid damage to surrounding equipment or operators, with high safety; The fire-proof and explosion-proof high-safety capacitor compensation cabinet can extinguish the fire when the cabinet body catches fire, and eliminate the fire in the bud. At the same time, it will also send an alarm through the alarm to remind the operator, and has high safety.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can be made without departing from the gist of the present invention. kind of change.

Claims (10)

1. A fire-proof and explosion-proof high-safety capacitor compensation cabinet, characterized in that it includes a cabinet body (1); the cabinet body (1) is divided into an upper cabinet body (20) and a lower cabinet body (27) by a partition , the partition plate is provided with a plurality of through holes, and the front ends of the upper cabinet (20) and the lower cabinet (27) are correspondingly provided with an upper cabinet door (5) and a lower cabinet door (2), and the upper cabinet door ( 5) There are transfer switch (6), reactive power meter (7), ammeter (8), power factor meter (12), reactive power compensation controller (13) and knife melting switch interface (14), the said A plurality of indicator lights (4) are evenly spaced on the lower cabinet door (2); a pressure relief cover (9) is provided on the top of the cabinet body (1), and pressure relief holes (10) are arranged around the pressure relief cover (9) ), the pressure relief cover (9) is fixed on the cabinet body (1) through the bolts (15) at the four corners, the cabinet body (1) is provided with bolt installation holes corresponding to the bolts (15), and the bolts (15) pass through Through the bolt mounting holes and fixed by nuts (17), a first spring (16) is provided between the nuts (17) and the inner wall of the cabinet (1); the side of the cabinet (1) is provided with an explosion-proof heat dissipation mechanism, which The mechanism includes the heat dissipation array holes (3) opened on the outer side of the cabinet (1) and the explosion-proof baffle (23) installed on the inside of the cabinet (1). The explosion-proof baffle (23) is hinged and installed on the The inside of the cabinet (1), and the explosion-proof baffle (23) completely covers the cooling array holes (3), and a second spring (24) is arranged between the lower end of the explosion-proof baffle (23) and the inner wall of the cabinet (1). 2. The fire-proof and explosion-proof high-safety capacitor compensation cabinet according to claim 1, characterized in that there are four pressure relief covers (9) in total, and they are arranged on the top of the cabinet body (1) in a quadrangular shape. 3. The fire-proof and explosion-proof high-safety capacitor compensation cabinet according to claim 2, characterized in that there are four explosion-proof heat dissipation mechanisms, two of which are respectively arranged on both sides of the upper cabinet (20), and the other two One is arranged on both sides of the lower cabinet body (27) respectively. 4. The fire-proof and explosion-proof high-safety capacitor compensation cabinet according to claim 3, characterized in that, the upper cabinet (20) is provided with a knife fuse switch (25) and a current transformer (26), and the knife fuse The switch (25) is located above the current transformer (26), and the lower cabinet (27) is provided with a miniature circuit breaker (28), an AC contactor (29), a thermal relay (30) and an AC capacitor (31). 5. The fire-proof and explosion-proof high-safety capacitor compensation cabinet according to claim 1 or 2 or 3 or 4, characterized in that temperature sensors are installed in the upper cabinet (20) and the lower cabinet (27) (18), the smoke sensor (19) and the fire extinguisher (21), the fire extinguisher (21) is provided with a nozzle (35), the end of the nozzle (35) is provided with a nozzle (36), and the nozzle (35) is provided with Solenoid valve (34); the cabinet (1) is also provided with a controller (32), and the temperature sensor (18), smoke sensor (19) and solenoid valve (34) are all connected to the controller (32). 6. The fire-proof and explosion-proof high-safety capacitor compensation cabinet according to claim 5, characterized in that, the cabinet (1) is provided with a power module (37), and the power module (37) is electrically connected to the controller ( 32). 7. The fire-proof and explosion-proof high-safety capacitor compensation cabinet according to claim 6, characterized in that, the fire extinguisher (21) is a dry powder fire extinguisher, and the nozzle (36) is a rotary nozzle. 8. The fire-proof and explosion-proof high-safety capacitor compensation cabinet according to claim 7, characterized in that, the fire extinguisher (21) is also provided with a pressure gauge (33). 9. The fire-proof and explosion-proof high-safety capacitor compensation cabinet according to claim 8, characterized in that an alarm (11) is installed on the top of the cabinet (1), and the alarm (11) is electrically connected to the controller (32). 10. The fire-proof and explosion-proof high-safety capacitance compensation cabinet according to claim 9, characterized in that the alarm (11) is an audible and visual alarm.