Non-return arc-preventing drawable air bellow of heavy-current switch cabinet

Abstract

The utility model discloses a heavy current switch cabinet non-return arc-proof drawable bellows in the technical field of current switch cabinet bellows, which comprises a current switch cabinet, a bellows is inserted in the middle of the front end of the current switch cabinet, two groups of fixing bolts are inserted on the left side and the right side of the bellows, a sealing cover is arranged at the upper end of the bellows, and the bellows is provided with an air inlet and an air outlet. Non-return ventilation mechanisms are mounted on the left side and the right side of the rear end of the sealing cover; the air drying mechanism is installed at the front end of an inner cavity of the air bellow, the top of the air bellow can be conveniently sealed in the use process through the sealing cover, and the air flow generated by the fan can be conveniently blown up through the non-return ventilation mechanism in the use process, so that a circuit breaker chamber in the current switch cabinet is cooled; and when an arcing fault occurs in the circuit breaker chamber, the rotating plate can be closed by high-speed airflow, and the air adsorbed by the fan can be conveniently dried through the air drying mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows for current switch cabinets, in particular to a non-reverse arc-proof and withdrawable bellows for a large current switch cabinet. Background Art

[0002] The withdrawable bellows for high current switchgear is an important device used in power systems, mainly used to control and protect high current switchgear in power systems. In power systems, high current switchgear is responsible for the opening and closing of circuits, so there are very high requirements for its performance and safety.

[0003] During the use of the existing bellows, when an arcing fault occurs in the circuit breaker chamber, the high-speed airflow will close the rotating plate to prevent the high-temperature arc from spraying out of the cabinet and causing personal injury. There are certain safety hazards. When the circuit breaker chamber is cooled down, the existing bellows are difficult to dry the air adsorbed into the circuit breaker chamber. The moisture in the circuit breaker chamber will cause condensation on the surface of the electrical equipment, thereby affecting the insulation performance of the equipment, reducing the service life of the equipment, and even causing safety accidents. Therefore, it is necessary to provide a new type of high-current switch cabinet anti-reverse arc retractable bellows to solve the above technical problems. Utility Model Content

[0004] Therefore, the purpose of the utility model is to provide a removable anti-reverse arc bellows for a large current switch cabinet, which can solve the problem that when an arcing fault occurs in the circuit breaker chamber of the existing device, the high-speed airflow will close the rotating plate, which can prevent the high-temperature arc from spraying out of the cabinet and causing personal injury. There are certain safety hazards and it is difficult to dry the air adsorbed into the circuit breaker chamber. The moisture in the circuit breaker chamber will cause condensation on the surface of electrical equipment, thereby affecting the insulation performance of the equipment, reducing the service life of the equipment, and even causing safety accidents. In order to solve the above technical problems, the utility model provides a removable anti-reverse arc bellows for a large current switch cabinet, which adopts the following technical solution: a removable anti-reverse arc bellows for a large current switch cabinet, comprising,

[0005] A current switch cabinet, wherein a bellows is inserted in the middle of the front end of the current switch cabinet, two sets of fixing bolts are inserted on the left and right sides of the bellows, a sealing cover is arranged on the upper end of the bellows, and a backflow-proof ventilation mechanism is installed on the left and right sides of the rear end of the sealing cover;

[0006] An air drying mechanism is installed at the front end of the inner cavity of the bellows, a fixing plate is fixedly connected to the middle of the inner cavity of the bellows, fans are installed on the left and right sides of the fixing plate, and the fixing plate is provided with a mounting groove adapted for the fan.

[0007] By adopting the above technical scheme, by providing a sealing cover, it is convenient to close the top of the bellows during use. By providing a non-reverse ventilation mechanism, the airflow generated by the fan can be blown up during use, thereby cooling the circuit breaker chamber in the current switch cabinet and ensuring that the high-speed airflow can close the rotating plate when an arc fault occurs in the circuit breaker chamber. By providing an air drying mechanism, the air adsorbed by the fan can be dried.

[0008] Optionally, a plurality of ventilation holes are evenly arranged at the front end of the bellows, and the rear end of the inner wall of the bellows is arranged as an inclined surface.

[0009] By adopting the above technical solution, multiple groups of ventilation holes are evenly opened at the front end of the bellows, so that the external air can be absorbed when the fan is turned on. The rear end of the inner wall of the bellows is set as an inclined surface to form an air duct, so that the air flows to the limited ventilation hole opened at the upper end of the sealing cover.

[0010] Optionally, a thread is connected to the surface of the fixing bolt, and the current switch cabinet and the bellows are provided with thread grooves adapted to the thread, and the fixing bolt, the current switch cabinet and the bellows form a rotating connection mechanism.

[0011] By adopting the above technical solution, the current switch cabinet and the bellows are fixed by fixing the bolts to form a rotating connection mechanism, and the current switch cabinet and the bellows can be fixed and disassembled for maintenance, thereby improving the practicality of the device.

[0012] Optionally, sliders are fixedly connected to the left and right sides of the bottom of the sealing cover, the bellows is provided with sliding grooves adapted to the sliders, and the sealing cover and the bellows form a sliding connection mechanism.

[0013] By adopting the above technical solution, the sealing cover and the bellows form a sliding connection mechanism, which makes it easy to disassemble the sealing cover and the bellows, so as to maintain or replace the internal components.

[0014] Optionally, a sealing ring is fixedly connected to the bottom of the sealing cover, and the sealing ring fits the connection between the sealing cover and the bellows.

[0015] By adopting the above technical solution, a sealing ring is fixedly connected to the bottom of the sealing cover, and the sealing ring fits the connection between the sealing cover and the bellows, so as to ensure the sealing performance of the sealing cover and the bellows.

[0016] Optionally, the anti-reverse ventilation mechanism includes a rotating plate hinged on the left and right sides of the bottom of the sealing cover, the sealing cover is provided with a limiting ventilation hole adapted to the rotating plate, the upper surface of the sealing cover is fixedly connected with a height limiting plate, and the height limiting plate is located behind the rotating plate.

[0017] By adopting the above technical solution, by providing a rotating plate, it is convenient for the airflow generated by the fan to blow it up during use, so as to cool the circuit breaker chamber in the current switch cabinet, and by providing a limited vent and a height limit plate, it is convenient to limit the rotating plate during use, so as to avoid the high-speed airflow from being difficult to close the rotating plate when an arc fault occurs in the circuit breaker chamber, resulting in a high-temperature arc spraying out of the cabinet and causing personal injury.

[0018] Optionally, the air drying mechanism includes mounting plates fixedly connected to the left and right sides of the front end of the inner cavity of the bellows, and an activated carbon adsorption plate is inserted between the two groups of mounting plates.

[0019] By adopting the above technical solution and providing an activated carbon adsorption plate, the air adsorbed by the fan can be dried when the fan is turned on, thereby improving the safety of the device and avoiding residual moisture in the circuit breaker room, which may cause condensation on the surface of electrical equipment, thereby affecting the insulation performance of the equipment, reducing the service life of the equipment, and even causing safety accidents.

[0020] Optionally, the left and right sides of the activated carbon adsorption plate are fixedly connected with card blocks, the mounting plate is provided with card slots adapted to the card blocks, and the activated carbon adsorption plate and the mounting plate form a card-engaging connection mechanism.

[0021] By adopting the above technical solution, the activated carbon adsorption plate and the mounting plate form a snap-fit ​​connection mechanism, so that the activated carbon adsorption plate can be disassembled and replaced when the air drying effect is limited after long-term use, thereby increasing the service life of the device.

[0022] In summary, the present invention has at least one of the following beneficial effects:

[0023] 1. The present application is provided with a non-reverse ventilation mechanism, and the airflow generated by the fan can be blown up by the rotating plate during use, so as to cool down the circuit breaker chamber in the current switch cabinet. The limited position vents and the height limit plate are provided, so as to limit the rotating plate during use, so as to avoid the high-speed airflow from being difficult to close the rotating plate when an arc fault occurs in the circuit breaker chamber, causing high-temperature arc to be ejected out of the cabinet, causing personal injury;

[0024] 2. By providing an air drying mechanism and an activated carbon adsorption plate, the air adsorbed by the fan can be dried when the fan is turned on, thereby improving the safety of the device and avoiding residual moisture in the circuit breaker room, which may cause condensation on the surface of electrical equipment, thereby affecting the insulation performance of the equipment, reducing the service life of the equipment, and even causing safety accidents. By providing a mounting plate and a card block, the activated carbon adsorption plate can be disassembled and replaced when the air drying effect is limited after long-term use, thereby improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are 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 creative work.

[0026] Figure 1 This is a schematic diagram of the use status of the utility model Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the use status of the utility model Figure 2 ;

[0028] Figure 3 This is a schematic diagram of the disassembly structure of the components of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the anti-reverse ventilation mechanism of the utility model;

[0030] Figure 5 This is a schematic diagram of the structure of the air drying mechanism of the utility model.

[0031] Explanation of the accompanying drawings: 1. Current switch cabinet; 2. Bellows; 3. Fixing bolt; 4. Sealing cover; 5. Anti-reverse ventilation mechanism; 501. Rotating plate; 502. Limiting vent; 503. Height limiting plate; 6. Sealing ring; 7. Air drying mechanism; 701. Mounting plate; 702. Activated carbon adsorption plate; 703. Block; 8. Fixing plate; 9. Fan. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 The utility model is described in further detail.

[0033] Example 1, reference Figure 1 , Figure 2 and Figure 5 The utility model discloses a withdrawable anti-reverse arc bellows for a large current switch cabinet, which can solve the problem that the existing device is difficult to dry the air adsorbed into the circuit breaker room, and the moisture in the circuit breaker room will cause condensation on the surface of the electrical equipment, thereby affecting the insulation performance of the equipment, reducing the service life of the equipment, and even causing safety accidents, including:

[0034] A current switch cabinet 1, a bellows 2 is inserted in the middle of the front end of the current switch cabinet 1, two sets of fixing bolts 3 are inserted on the left and right sides of the bellows 2, a sealing cover 4 is arranged on the upper end of the bellows 2, and a backflow-proof ventilation mechanism 5 is installed on the left and right sides of the rear end of the sealing cover 4;

[0035] An air drying mechanism 7 is installed at the front end of the inner cavity of the bellows 2, a fixing plate 8 is fixedly connected to the middle of the inner cavity of the bellows 2, fans 9 are installed on the left and right sides of the fixing plate 8, and the fixing plate 8 is provided with mounting grooves adapted to the fans 9, a plurality of ventilation holes are evenly arranged at the front end of the bellows 2, and the rear end of the inner wall of the bellows 2 is arranged as an inclined surface, the air drying mechanism 7 comprises mounting plates 701 fixedly connected to the left and right sides of the front end of the inner cavity of the bellows 2, an activated carbon adsorption plate 702 is inserted between the two groups of mounting plates 701, a clamping block 703 is fixedly connected to the left and right sides of the activated carbon adsorption plate 702, the mounting plate 701 is provided with a clamping groove adapted to the clamping block 703, and the activated carbon adsorption plate 702 and the mounting plate 701 form a clamping connection mechanism.

[0036] Working principle: the current switch cabinet 1 is convenient for controlling the switch of the power system, the bellows 2 is convenient for installing the components, and the rear end of the inner wall of the bellows 2 is set as an inclined surface to form an air duct so that the air can flow to the limit vent 502 opened at the upper end, the fixing bolt 3 is convenient for disassembly and fixing of the current switch cabinet 1 and the bellows 2, the sealing cover 4 is convenient for sealing the top of the bellows 2, the anti-reverse ventilation mechanism 5 is convenient for the airflow generated by the fan 9 during use, so as to blow it up and cool the circuit breaker room in the current switch cabinet 1, the air drying mechanism 7 is convenient for drying the air adsorbed by the fan 9, the fixing plate 8 is convenient for installing the fan 9, and the fan 9 is convenient for adsorbing the air in the bellows 2. Thereby, the circuit breaker chamber is cooled. When in use, the fan 9 is turned on, and the air in the bellows 2 is adsorbed by the fan 9. When the air passes through the activated carbon adsorption plate 702, the residual moisture in the air is adsorbed by the activated carbon adsorption plate 702, thereby drying the air, avoiding residual moisture in the circuit breaker chamber, causing condensation on the surface of electrical equipment, thereby affecting the insulation performance of the equipment, reducing the service life of the equipment, and even causing safety accidents, thereby improving the safety of the use of the device. When the activated carbon adsorption plate 702 needs to be replaced, the fixing bolt 3 is unscrewed, the bellows 2 is separated from the current switch cabinet 1, the sealing cover 4 is pulled out, and the activated carbon adsorption plate 702 on the mounting plate 701 is taken out for replacement.

[0037] Example 2, reference Figure 3 and Figure 4In this embodiment, the problem that when an arcing fault occurs in the circuit breaker chamber of the existing device, the high-speed airflow will close the rotating plate, which can prevent the high-temperature arc from spraying out of the cabinet and causing personal injury, and there are certain safety hazards is solved. The large current switch cabinet anti-reverse arc removable bellows also includes a fixing bolt 3 with a thread connected on the surface, and the current switch cabinet 1 and the bellows 2 are provided with a thread groove adapted to the thread. The fixing bolt 3 and the current switch cabinet 1 and the bellows 2 form a rotating connection mechanism, and the left and right sides of the bottom of the sealing cover 4 are fixedly connected with sliding The bellows 2 is provided with a slide groove matched with the slider, the sealing cover 4 and the bellows 2 form a sliding connection mechanism, the bottom of the sealing cover 4 is fixedly connected with a sealing ring 6, and the sealing ring 6 fits the connection between the sealing cover 4 and the bellows 2, the anti-reverse ventilation mechanism 5 includes a rotating plate 501 hinged on the left and right sides of the bottom of the sealing cover 4, the sealing cover 4 is provided with a limiting vent 502 matched with the rotating plate 501, and the upper surface of the sealing cover 4 is fixedly connected with a height limiting plate 503, and the height limiting plate 503 is located behind the rotating plate 501.

[0038] Working principle: when the air is dry, an air duct is formed through the inclined surface provided on the inner wall of the bellows 2, so that the adsorbed air flows upward, and the two sets of rotating plates 501 on the sealing cover 4 are blown, thereby cooling the circuit breaker chamber. When an arcing fault occurs in the circuit breaker chamber, the limited vents 502 and the height limit plates 503 are provided to facilitate the limiting of the rotating plates 501 during use, so as to avoid the difficulty of high-speed airflow in closing the rotating plates 501, resulting in high-temperature arcs being ejected out of the cabinet, causing personal injury, thereby improving the safety of the use of the device.

[0039] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A withdrawable anti-reverse arc bellows for a large current switch cabinet, characterized in that: include, A current switch cabinet (1), wherein a bellows (2) is inserted in the middle of the front end of the current switch cabinet (1), two sets of fixing bolts (3) are inserted on the left and right sides of the bellows (2), a sealing cover (4) is arranged at the upper end of the bellows (2), and a backflow-proof ventilation mechanism (5) is installed on the left and right sides of the rear end of the sealing cover (4); An air drying mechanism (7) is installed at the front end of the inner cavity of the bellows (2), a fixing plate (8) is fixedly connected to the middle of the inner cavity of the bellows (2), a fan (9) is installed on the left and right sides of the fixing plate (8), and the fixing plate (8) is provided with a mounting groove adapted for the fan (9).

2. According to claim 1, a high current switch cabinet anti-reverse arc withdrawable bellows, characterized in that: The front end of the bellows (2) is evenly provided with a plurality of ventilation openings, and the rear end of the inner wall of the bellows (2) is arranged as an inclined surface.

3. The withdrawable anti-reverse arc bellows for a large current switch cabinet according to claim 1, characterized in that: The surface of the fixing bolt (3) is connected with a thread, the current switch cabinet (1) and the bellows (2) are provided with a thread groove matched with the thread, and the fixing bolt (3) and the current switch cabinet (1) and the bellows (2) form a rotating connection mechanism.

4. The withdrawable anti-reverse arc bellows for a high current switch cabinet according to claim 1, characterized in that: Slide blocks are fixedly connected to the left and right sides of the bottom of the sealing cover (4); the bellows (2) is provided with sliding grooves adapted to the slide blocks; the sealing cover (4) and the bellows (2) form a sliding connection mechanism.

5. The withdrawable anti-reverse arc bellows for a large current switch cabinet according to claim 1, characterized in that: A sealing ring (6) is fixedly connected to the bottom of the sealing cover (4), and the sealing ring (6) fits in a connection between the sealing cover (4) and the bellows (2).

6. The withdrawable anti-reverse arc bellows for a large current switch cabinet according to claim 1, characterized in that: The anti-reverse ventilation mechanism (5) comprises a rotating plate (501) hinged on the left and right sides of the bottom of the sealing cover (4); the sealing cover (4) is provided with a limiting ventilation opening (502) adapted to the rotating plate (501); the upper surface of the sealing cover (4) is fixedly connected with a height limiting plate (503), and the height limiting plate (503) is located behind the rotating plate (501).

7. The withdrawable anti-reverse arc bellows for a large current switch cabinet according to claim 1, characterized in that: The air drying mechanism (7) comprises mounting plates (701) fixedly connected to the left and right sides of the front end of the inner cavity of the bellows (2), and an activated carbon adsorption plate (702) is inserted between two groups of the mounting plates (701).

8. The withdrawable anti-reverse arc bellows for a large current switch cabinet according to claim 7, characterized in that: The left and right sides of the activated carbon adsorption plate (702) are fixedly connected with a clamping block (703), the mounting plate (701) is provided with a clamping groove adapted to the clamping block (703), and the activated carbon adsorption plate (702) and the mounting plate (701) form a clamping connection mechanism.

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