High-low voltage switch cabinet with good safety

Abstract

The utility model belongs to the technical field of switch cabinets, in particular to a high-low voltage switch cabinet with good safety, which comprises a cabinet body, a cabinet door is hinged on the front surface of the cabinet body, shells are communicated and fixed on two sides of the cabinet body, supports are fixed in the shells, and tank bodies are fixed on the inner walls of the bottoms of the supports. Through the arrangement of the cabinet body, the shell, the bracket, the tank body, the connecting pipe, the electromagnetic valve, the exhaust pipe, the temperature sensor, the smoke sensor, the storage battery, the PLC and the plugging mechanism, in the process of using the high-low voltage switch cabinet, when a fire occurs in the high-low voltage switch cabinet, the temperature sensor and the smoke sensor can send signals to the PLC at the same time, so that the PLC can control the temperature of the high-low voltage switch cabinet; and then the PLC controls the plugging mechanism to plug the through hole, then the electromagnetic valve on the connecting pipe is opened, and carbon dioxide in the tank body can be sprayed into the cabinet body, so that fire extinguishing operation in the high-low voltage switch cabinet is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, in particular to a high and low voltage switch cabinet with good safety. Background Art

[0002] As the name implies, high and low voltage switchgear is equipment for connecting high voltage or low voltage cables. Generally, power supply bureaus and substations use high voltage cabinets, which are then stepped down by transformers to low voltage cabinets, and then to distribution boxes for various electricity users. The cabinets are nothing more than electrical equipment that assembles some protective devices such as switches and circuit breakers into one. At present, the electrical components and lines in high and low voltage switchgear are prone to sparks due to short circuits, and sparks can cause fires in electrical components and lines. Generally, smoke sensors are set in high and low voltage switchgear for early warning. However, the current high and low voltage switchgear does not have the function of automatic fire extinguishing during use. When a fire occurs inside, the staff cannot immediately reach the vicinity of the high and low voltage switchgear, so that the electrical components and lines in the high and low voltage switchgear will be severely damaged, and may cause a larger fire. Therefore, we propose a high and low voltage switchgear with good safety to solve the above problems. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a high and low voltage switch cabinet with good safety, which solves the problems raised in the above background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A high- and low-voltage switch cabinet with good safety comprises a cabinet body, a cabinet door is hingedly connected to the front of the cabinet body, a shell is connected and fixed on both sides of the cabinet body, a bracket is fixed inside the shell, a tank body is fixed to the bottom inner wall of the bracket, a connecting pipe is connected and fixed to the top of the tank body, a solenoid valve is installed on the connecting pipe, an exhaust pipe is fixed on the bracket, the connecting pipe is connected and fixed to the corresponding exhaust pipe respectively, two through openings are provided on one side of the shell body, exhaust fans are fixed inside the two through openings, a temperature sensor and a smoke sensor are fixed on the top inner wall of the cabinet body, a box is fixed on the top of the cabinet body, a battery and a PLC controller are fixed inside the box body, the battery is electrically connected to the PLC controller, the PLC controller is electrically connected to the solenoid valve, the temperature sensor and the smoke sensor, and a side wall of the shell body is provided with a blocking mechanism for blocking the through opening.

[0008] Furthermore, the blocking mechanism includes two limit rods fixed on one side wall of the shell, two baffles are slidably connected between the two limit rods, one side wall of the shell is rotatably connected to a rotating shaft through a bearing, a gear is fixed on the surface of the rotating shaft, a rack is fixed on one side wall of the baffle, and the rack is meshed with the gear, a motor is fixed on one side wall of the shell, the output end of the motor is fixedly connected to one end of the rotating shaft, and the PLC controller is electrically connected to the motor.

[0009] Furthermore, a protective cover for shielding the motor is fixed to one side wall of the two limiting rods.

[0010] Furthermore, a guide plate is fixed inside the cabinet, and ventilation slots are equidistantly formed on the top of the guide plate.

[0011] Furthermore, a dustproof net is fixed inside the through opening.

[0012] Furthermore, a visual observation window is provided on the front side of the cabinet door.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a high and low voltage switch cabinet with good safety, which has the following beneficial effects:

[0015] The utility model, by arranging a cabinet body, a shell, a bracket, a tank body, a connecting pipe, a solenoid valve, an exhaust pipe, a temperature sensor, a smoke sensor, a battery, a PLC controller and a sealing mechanism, when the high and low voltage switch cabinet is used, when a fire occurs inside the cabinet, the temperature sensor and the smoke sensor will simultaneously send signals to the PLC controller, and then the PLC controller will control the sealing mechanism to seal the opening, and then open the solenoid valve on the connecting pipe, and at this time the carbon dioxide in the tank body can be sprayed into the interior of the cabinet, thereby realizing the fire extinguishing operation inside the high and low voltage switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cabinet structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the shell structure of the utility model.

[0019] In the figure: 1. cabinet; 2. cabinet door; 3. shell; 4. bracket; 5. tank; 6. connecting pipe; 7. solenoid valve; 8. exhaust pipe; 9. through port; 10. exhaust fan; 11. temperature sensor; 12. smoke sensor; 13. cabinet; 14. battery; 15. PLC controller; 16. blocking mechanism; 1601. limit rod; 1602. baffle; 1603. shaft; 1604. gear; 1605. rack; 1606. motor; 1607. protective cover; 17. drainage plate; 18. ventilation slot; 19. dust net. DETAILED DESCRIPTION

[0020] 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 in 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.

[0021] Example

[0022] like Figure 1 , Figure 2 and Figure 3As shown, a high and low voltage switch cabinet with good safety proposed by an embodiment of the utility model includes a cabinet body 1, a cabinet door 2 is hinged on the front of the cabinet body 1, and a visual observation window is arranged on the front of the cabinet door 2, so that the situation inside the cabinet body 1 can be conveniently viewed from the outside, and both sides of the cabinet body 1 are connected and fixed with a shell 3, and the inside of the shell 3 is fixed with a bracket 4, and the bottom inner wall of the bracket 4 is fixed with a tank body 5, and the top of the tank body 5 is connected and fixed with a connecting pipe 6, and a solenoid valve 7 is installed on the connecting pipe 6, and an exhaust pipe 8 is fixed on the bracket 4, and the connecting pipe 6 is respectively The cabinet 1 is connected and fixed with the corresponding exhaust pipe 8. Two through holes 9 are provided on one side of the housing 3. A dustproof net 19 is fixed inside the through holes 9 to prevent dust and flocs from entering the cabinet 1 through the through holes 9 and affecting the electrical components inside the cabinet 1. An exhaust fan 10 is fixed inside the two through holes 9. A temperature sensor 11 and a smoke sensor 12 are fixed on the top inner wall of the cabinet 1. A box 13 is fixed on the top of the cabinet 1. A battery 14 and a PLC controller 15 are fixed inside the box 13. The battery 14 and the PLC controller 15 are electrically The PLC controller 15 is electrically connected to the solenoid valve 7, the temperature sensor 11 and the smoke sensor 12. A blocking mechanism 16 for shielding the passage 9 is provided on one side wall of the housing 3. When using this high and low switch cabinet, the maximum temperature warning inside the cabinet 1 can be set through the temperature sensor 11. When the temperature inside the cabinet 1 is too high, the temperature sensor 11 will transmit a signal to the PLC controller 15, and then the PLC controller 15 will control the exhaust fan 10 to start, thereby dissipating the heat inside the cabinet 1. At the same time, when the temperature inside the cabinet 1 is too high, the exhaust fan 10 will start to cool the inside of the cabinet 1. When a fire occurs, the temperature sensor 11 will sense abnormal temperature, and then the smoke sensor 12 will sense smoke, and both will send signals to the PLC controller 15 at the same time. Then the PLC controller 15 will control the sealing mechanism 16 to seal the opening 9, and after controlling the solenoid valve 7 to open, the carbon dioxide inside the tank body 5 will be transported to the exhaust pipe 8 through the connecting pipe 6 and blown into the interior of the cabinet 1. When the carbon dioxide gas is distributed inside the cabinet 1, the oxygen concentration inside it will be reduced, thereby suffocating the flames inside the cabinet 1.

[0023] like Figure 1 and Figure 3As shown, in some embodiments, the blocking mechanism 16 includes two limit rods 1601 fixed to a side wall of the shell 3, two baffles 1602 are slidably connected between the two limit rods 1601, a side wall of the shell 3 is rotatably connected to a shaft 1603 through a bearing, a gear 1604 is fixed to the surface of the shaft 1603, a rack 1605 is fixed to a side wall of the baffle 1602, and the rack 1605 is meshed with the gear 1604, and a motor 1606 is fixed to a side wall of the shell 3. The output end of 1606 is fixedly connected to one end of the rotating shaft 1603, and the PLC controller 15 is electrically connected to the motor 1606. When in use, the PLC controller 15 will control the motor 1606 to start. After the motor 1606 is started, it will drive the rotating shaft 1603 to rotate. After the rotating shaft 1603 rotates, it can drive the gear 1604 to rotate. Under the action of the two racks 1605, the two baffles 1602 can be driven to move in the opposite direction at the same time. When the baffle 1602 moves, the opening 9 can be blocked.

[0024] like Figure 1 and Figure 2 As shown, in some embodiments, a protective cover 1607 for shielding the motor 1606 is fixed to one side wall of the two limiting rods 1601 , which can protect the motor 1606 and components outside the housing 3 .

[0025] like Figure 2 As shown, in some embodiments, a guide plate 17 is fixed inside the cabinet 1, and ventilation slots 18 are equidistantly provided on the top of the guide plate 17, so that the air entering from the outside can flow evenly on the surface of the electrical components inside the cabinet 1, so as to enhance the heat dissipation effect inside the cabinet 1.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high and low voltage switch cabinet with good safety, comprising a cabinet body (1), characterized in that: The cabinet body (1) is hingedly provided with a cabinet door (2) on the front side, a shell (3) is connected and fixed to both sides of the cabinet body (1), a bracket (4) is fixed inside the shell (3), a tank body (5) is fixed to the bottom inner wall of the bracket (4), a connecting pipe (6) is connected and fixed to the top of the tank body (5), a solenoid valve (7) is installed on the connecting pipe (6), an exhaust pipe (8) is fixed on the bracket (4), the connecting pipe (6) is connected and fixed to the corresponding exhaust pipe (8), and two through openings (9) are provided on one side of the shell body (3), wherein the inner surfaces of the two through openings (9) are connected to the exhaust pipe (8). An exhaust fan (10) is fixed on the top inner wall of the cabinet (1), a temperature sensor (11) and a smoke sensor (12) are fixed on the top inner wall of the cabinet (1), a box (13) is fixed on the top of the cabinet (1), a storage battery (14) and a PLC controller (15) are fixed inside the box (13), the storage battery (14) is electrically connected to the PLC controller (15), the PLC controller (15) is electrically connected to the solenoid valve (7), the temperature sensor (11) and the smoke sensor (12), and a blocking mechanism (16) for shielding the opening (9) is provided on one side wall of the housing (3).

2. A high and low voltage switch cabinet with good safety according to claim 1, characterized in that: The blocking mechanism (16) comprises two limit rods (1601) fixed to a side wall of the shell (3); two baffles (1602) are slidably connected between the two limit rods (1601); a rotating shaft (1603) is rotatably connected to a side wall of the shell (3) via a bearing; a gear (1604) is fixed to the surface of the rotating shaft (1603); a rack (1605) is fixed to a side wall of the baffle (1602); the racks (1605) are meshingly connected to the gear (1604); a motor (1606) is fixed to a side wall of the shell (3); an output end of the motor (1606) is fixedly connected to one end of the rotating shaft (1603); and the PLC controller (15) is electrically connected to the motor (1606).

3. A high and low voltage switch cabinet with good safety according to claim 2, characterized in that: A protective cover (1607) for shielding the motor (1606) is fixed to one side wall of the two limiting rods (1601).

4. A high and low voltage switch cabinet with good safety according to claim 1, characterized in that: A flow guide plate (17) is fixed inside the cabinet (1), and ventilation slots (18) are equidistantly arranged on the top of the flow guide plate (17).

5. A high and low voltage switch cabinet with good safety according to claim 1, characterized in that: A dustproof net (19) is fixed inside the through opening (9).

6. A high and low voltage switch cabinet with good safety according to claim 1, characterized in that: The front side of the cabinet door (2) is provided with a visual observation window.

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