CN221747713U - A new type of semi-insulated withdrawable switch cabinet - Google Patents

Abstract

The utility model belongs to the technical field of switch cabinets, in particular to a novel semi-insulating draw-out switch cabinet, which comprises a cabinet shell; the utility model relates to a drying cabinet, which is characterized in that mounting strips are symmetrically arranged in the cabinet shell, a fan is arranged between the two mounting strips, a collecting box is fixedly arranged at the top end of the fan, a drying agent bag is arranged in the collecting box, the mounting strips and the fan are arranged through fixing strips, two ends of the fixing strips are respectively fixedly connected with the mounting strips and the fan, and an end cover is arranged in the middle of the top end of the collecting box.

Description

A new type of semi-insulated withdrawable switch cabinet

Technical Field

The utility model relates to the technical field of switch cabinets, in particular to a novel semi-insulated withdrawable switch cabinet.

Background Art

The switch cabinet is an electrical equipment. The external line of the switch cabinet first enters the main control switch inside the cabinet, and then enters the sub-control switch. Each branch is set according to its needs. Such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage room switch cabinets, with high-voltage busbars, such as power plants, etc. Some are also equipped to ensure low-frequency load shedding of major equipment;

The main function of the switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and power conversion in the power system. The components in the switchgear mainly include circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protective devices. There are many ways to classify switchgear. For example, according to the installation method of the circuit breaker, it can be divided into removable switchgear and fixed switchgear; or according to the different cabinet structures, it can be divided into open switchgear, metal-enclosed switchgear and metal-enclosed armored switchgear; according to the different voltage levels, it can be divided into high-voltage switchgear, medium-voltage switchgear and low-voltage switchgear. It is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgical steel rolling, light industry and textiles, factories and mines, residential areas, high-rise buildings, etc.

Although the existing switch cabinets meet the needs of users to a certain extent, there are still certain defects in the use process. The specific problems are as follows: the internal temperature of the switch cabinet is too high when it is running, and the external wind is used to dissipate the heat of the electrical components. At this time, the moisture in the gas is easy to enter the outside of the electrical components, causing the electrical components to be damaged due to moisture. Therefore, a new type of semi-insulated withdrawable switch cabinet is proposed to solve the above problems.

Utility Model Content

In order to make up for the shortcomings of the prior art, the internal temperature of the switch cabinet is too high during operation, and the external wind is used to dissipate the heat of the electrical components. At this time, the moisture in the gas is easy to enter the outside of the electrical components, causing the electrical components to be damaged due to moisture. The utility model proposes a new type of semi-insulated withdrawable switch cabinet.

The technical solution adopted by the utility model to solve the technical problem is: a novel semi-insulated withdrawable switch cabinet, comprising a cabinet shell; mounting strips are symmetrically installed inside the cabinet shell, a fan is installed between two mounting strips, a collection box is fixedly installed on the top of the fan, and a desiccant bag is arranged inside the collection box.

Preferably, the mounting bar and the fan are mounted via a fixing bar, both ends of the fixing bar are fixedly connected to the mounting bar and the fan respectively, and an end cover is installed at the middle of the top end of the collecting box.

Preferably, heat dissipation holes are provided at the top of the collecting box and the end cover at positions corresponding to the top of the fan, and the shapes of the end cover and the collecting box are both rectangular.

Preferably, an instrument box is installed at the top end of one side of the cabinet shell, and a mechanism box is installed at the bottom end of the instrument box on one side of the cabinet shell.

Preferably, a voltage transformer is installed at the top of the collecting box inside the cabinet shell, a fuse is installed at the top of the voltage transformer, an air bag load switch is installed at the top of the fuse, and an upper grounding knife is installed at the top of the inner wall of the cabinet shell.

Preferably, a connecting bar is installed at the top of the voltage transformer, an insulator is installed at one end of the connecting bar, the other end of the connecting bar is fixedly connected to the fuse, and the fuse and the air-filled load switch are connected via the connecting bar.

Preferably, a base bracket is installed at one end of the insulator and the base bracket is fixedly connected to the cabinet shell, and a grounding bar is installed at one side of the inner wall of the cabinet shell.

The utility model is beneficial in that:

1. The utility model can accelerate the gas flow rate inside the cabinet, thereby accelerating the heat dissipation of the electrical components inside the cabinet, reducing the heat generated by the electrical components during use, thereby increasing the service life, and through the desiccant bag, it can adsorb moisture in the flowing gas, thereby reducing the interference of moisture on the electrical components, thereby increasing the service life of the electrical components;

2. The utility model can cut off the faulty circuit to avoid greater accidental safety accidents in the circuit. At the same time, it can ground the cabinet to ensure the safe use of the user's electrical equipment, thereby achieving the role of protecting the device and personnel, and ensuring the normal operation of the electrical components inside the cabinet.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

Fig. 1 is a schematic diagram of the structure of the utility model;

Figure 2 is a schematic diagram of the installation structure of the upper grounding knife of the utility model;

FIG3 is a schematic diagram of the installation structure of the fan of the utility model;

FIG. 4 is a schematic diagram of the installation structure of the insulator of the utility model.

In the figure: 1. Cabinet shell; 2. Mounting bar; 3. Fixing bar; 4. Collection box; 5. Desiccant bag; 6. End cover; 7. Heat dissipation hole; 8. Mechanism box; 9. Voltage transformer; 10. Instrument box; 11. Upper grounding knife; 12. Base bracket; 13. Connection bar; 14. Air bag load switch; 15. Fuse; 16. Insulator; 17. Grounding bar; 18. Fan.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

The present application will be further described in detail below with reference to Figures 1 to 4.

The embodiment of the present application discloses a novel semi-insulated withdrawable switch cabinet, comprising a cabinet shell 1; mounting bars 2 are symmetrically installed inside the cabinet shell 1, a fan 18 is installed between the two mounting bars 2, the input end of the fan 18 is electrically connected to the output end of an external power supply, a collection box 4 is fixedly installed on the top of the fan 18, and a desiccant bag 5 is arranged inside the collection box 4.

The fan 18 starts to run after being connected to the power supply. When the fan 18 is running, the gas is caused to flow to form wind. The wind enters the collection box 4 along the bottom of the collection box 4 and adsorbs the moisture in the gas through the desiccant bag 5, so that the dry fluid gas flows inside the cabinet shell 1, thereby achieving the purpose of cooling the electrical components inside the cabinet shell 1.

2 and 3, the mounting bar 2 and the fan 18 are mounted via a fixing bar 3, both ends of the fixing bar 3 are fixedly connected to the mounting bar 2 and the fan 18, and an end cap 6 is installed at the middle of the top of the collecting box 4;

The end cover 6 can be used to block the top of the collection box 4 to prevent the desiccant bag 5 from falling inside the collection box 4. At the same time, through the action of the fixing strip 3, the installation and fixation between the mounting strip 2 and the fan 18 can be facilitated, thereby changing the difficulty of installation and fixation between the mounting strip 2 and the fan 18.

2 and 3, the top of the collecting box 4 and the end cover 6 are provided with heat dissipation holes 7 at positions corresponding to the top of the fan 18, and the shapes of the end cover 6 and the collecting box 4 are both rectangular;

The heat dissipation holes 7 can facilitate the flow of gas and can block objects to prevent them from falling inside the collection box 4 due to wind.

1 and 2 , an instrument box 10 is installed at the top of one side of the cabinet housing 1, and a mechanism box 8 is installed at the bottom of the instrument box 10 on one side of the cabinet housing 1;

The instrument box 10 can be used to install the instruments of the cabinet 1, which reduces the difficulty of installing the instruments. Meanwhile, the mechanism box 8 can be used to place some structures and facilitate maintenance of the mechanisms.

2 and 4 , a voltage transformer 9 is installed at the top of the collecting box 4 inside the cabinet 1, a fuse 15 is installed at the top of the voltage transformer 9, a gas bag load switch 14 is installed at the top of the fuse 15, and an upper grounding knife 11 is installed at the top of the inner wall of the cabinet 1;

The voltage transformer 9 is an instrument used to change the voltage so that the voltage remains stable. When the current exceeds the threshold, the fuse 15 generates its own heat to melt the fuse. The fuse 15 and the air-filled load switch 14 are connected in series and can replace the circuit breaker. The switch device can close, carry and disconnect the current under normal circuit conditions and can close, carry and disconnect the current under abnormal circuit conditions within a specified time.

2 and 4 , a connection bar 13 is installed at the top of the voltage transformer 9, an insulator 16 is installed at one end of the connection bar 13, the other end of the connection bar 13 is fixedly connected to the fuse 15, and the fuse 15 and the air bag load switch 14 are connected through the connection bar 13;

The connection bar 13 enables the fuse 15 and the air-filled load switch 14 to be connected in series, and the insulator 16 is connected to the fuse 15 and the air-filled load switch 14 without hindering the movement of current.

2 and 4 , a base bracket 12 is installed at one end of the insulator 16 and the base bracket 12 is fixedly connected to the cabinet housing 1 , and a grounding bar 17 is installed on one side of the inner wall of the cabinet housing 1 ;

The grounding bar 17 can be used for grounding, thereby achieving the function of protecting devices and personnel and ensuring the normal operation of electrical components inside the cabinet 1.

Working principle: During actual use of the device, the grounding bar 17 is connected to the earth through an electric wire, and then the current enters the fuse 15 along the voltage transformer 9, and then enters the air-filled load switch 14 along the fuse 15. The fuse 15 and the air-filled load switch 14 are connected in series to replace the circuit breaker. The device can close, carry and disconnect the current under normal circuit conditions and can close, carry and disconnect the current under abnormal circuit conditions within a specified time. Then the fan 18 is started, and the fan 18 starts to run after being connected to the power supply. When the fan 18 is running, the gas is driven to flow to form wind. The wind enters the collection box 4 along the bottom end of the collection box 4, and the moisture in the gas is adsorbed by the desiccant bag 5, so that the dry fluid gas flows inside the cabinet shell 1, thereby achieving the purpose of cooling the electrical components inside the cabinet shell 1.

The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims (7)

1. A novel semi-insulated withdrawable switch cabinet, characterized in that it comprises a cabinet shell (1); mounting strips (2) are symmetrically installed inside the cabinet shell (1); a fan (18) is installed between two mounting strips (2); a collection box (4) is fixedly installed on the top of the fan (18); a desiccant bag (5) is arranged inside the collection box (4). 2. A novel semi-insulated withdrawable switch cabinet according to claim 1, characterized in that: the mounting bar (2) and the fan (18) are installed via a fixing bar (3), the two ends of the fixing bar (3) are respectively fixedly connected to the mounting bar (2) and the fan (18), and an end cover (6) is installed in the middle of the top end of the collection box (4). 3. A novel semi-insulated withdrawable switch cabinet according to claim 2, characterized in that: a heat dissipation hole (7) is provided at the top of the collecting box (4) and the end cover (6) corresponding to the top of the fan (18), and the shape of the end cover (6) and the collecting box (4) are both rectangular. 4. A novel semi-insulated withdrawable switch cabinet according to claim 1, characterized in that: an instrument box (10) is installed at the top end of one side of the cabinet shell (1), and a mechanism box (8) is installed at the bottom end of the instrument box (10) on one side of the cabinet shell (1). 5. A novel semi-insulated withdrawable switch cabinet according to claim 1, characterized in that: a voltage transformer (9) is installed at the top position of the collecting box (4) inside the cabinet shell (1), a fuse (15) is installed at the top of the voltage transformer (9), an air-filled load switch (14) is installed at the top of the fuse (15), and an upper grounding knife (11) is installed at the top of the inner wall of the cabinet shell (1). 6. A novel semi-insulated withdrawable switch cabinet according to claim 5, characterized in that: a connecting bar (13) is installed on the top of the voltage transformer (9), an insulator (16) is installed at one end of the connecting bar (13), the other end of the connecting bar (13) is fixedly connected to the fuse (15), and the fuse (15) and the air-enclosed load switch (14) are connected through the connecting bar (13). 7. A novel semi-insulated withdrawable switch cabinet according to claim 6, characterized in that: a base bracket (12) is installed at one end of the insulator (16), and the base bracket (12) and the cabinet shell (1) are fixedly connected, and a grounding bar (17) is installed on one side of the inner wall of the cabinet shell (1).