Positive pressure type explosion-proof power distribution cabinet

Abstract

The utility model relates to a positive pressure type explosion-proof power distribution cabinet, which relates to the technical field of power equipment, and comprises a power distribution cabinet main body, a processing assembly and a ventilation assembly, the ventilation assembly is connected to the end, away from the power distribution cabinet body, of the processing assembly. The air exchange assembly comprises a first shell, a double-shaft motor, an air exhaust fan blade, an air blowing fan blade, an air exchange filter screen and an air blowing filter screen; the first shell is connected to the processing assembly, the fixed end of the double-shaft motor is fixedly connected to one end of the inner wall of the first shell, the exhaust fan blade is fixedly connected to the first output end of the double-shaft motor, the blowing fan blade is fixedly connected to the second output end of the double-shaft motor, and a first air inlet and a first air outlet are formed in the end, close to the processing assembly, of the first shell. The ventilation filter screen is fixedly connected to the side, close to the exhaust fan blades, of the first shell. The blowing filter screen is fixedly connected to the side, close to the blowing fan blades, of the first shell. The positive voltage type explosion-proof power distribution cabinet has the effect of reducing the use cost of the positive voltage type explosion-proof power distribution cabinet.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to a positive pressure explosion-proof power distribution cabinet. Background Art

[0002] Positive pressure explosion-proof distribution cabinet is a kind of distribution equipment used in dangerous environments, such as petrochemical, mining and ports and other flammable and explosive environments.

[0003] The existing positive pressure explosion-proof distribution cabinet includes a control system, a distribution cabinet body, a solenoid valve and a compressed gas tank. When in use, the control system monitors the pressure in the distribution cabinet in real time and controls the inflow and outflow of the protector through the solenoid valve.

[0004] During the operation of the above positive pressure explosion-proof distribution cabinet, the compressed gas tank needs to be replaced frequently, and there is also a risk of the protective gas leaking into the environment, which results in excessively high use costs of the positive pressure explosion-proof distribution cabinet. Utility Model Content

[0005] In order to reduce the use cost of a positive pressure explosion-proof power distribution cabinet, the present application provides a positive pressure explosion-proof power distribution cabinet.

[0006] The present application provides a positive pressure explosion-proof power distribution cabinet, which adopts the following technical solution:

[0007] A positive pressure explosion-proof power distribution cabinet, comprising a power distribution cabinet body, a processing component and a ventilation component; the processing component is connected to one end of the power distribution cabinet body, the processing component is used to filter the gas entering the power distribution cabinet body, the ventilation component is connected to one end of the processing component away from the power distribution cabinet body, and the power distribution cabinet body is provided with a second air inlet and a second air outlet at one end close to the processing component;

[0008] In which, the ventilation component includes a first shell, a dual-axis motor, an exhaust fan blade, an air blowing fan blade, a ventilation filter and an air blowing filter; the first shell is connected to the processing component, the fixed end of the dual-axis motor is fixedly connected to an end of the inner wall of the first shell away from the processing component, the exhaust fan blade is fixedly connected to the first output end of the dual-axis motor, and the blowing fan blade is fixedly connected to the second output end of the dual-axis motor, and the first output end of the dual-axis motor rotates in opposite directions; a first air inlet and a first air outlet are provided at an end of the first shell close to the processing component, the first air inlet and the exhaust fan blade are arranged on the same side, and the first air outlet and the blowing fan blade are arranged on the same side; the second air inlet is coaxial with the first air inlet, and the second air outlet is coaxial with the first air outlet; the ventilation filter is fixedly connected to a side of the first shell close to the exhaust fan blade; the blowing filter is fixedly connected to a side of the first shell close to the blowing fan blade.

[0009] By adopting the above technical solution, when the power distribution cabinet is ready to work, the dual-axis motor drives the exhaust fan blades to rotate, and the air enters the first shell through the ventilation filter, and then enters the processing component through the first air inlet. After passing through the processing component, the air enters the main body of the power distribution cabinet through the second air inlet. While the exhaust fan blades rotate, the dual-axis motor drives the blowing fan blades to rotate, and the air in the power distribution cabinet enters the processing component through the second air outlet. After passing through the processing component, the air is blown out into the atmosphere through the blowing filter, thereby realizing the use of air to protect the interior of the power distribution cabinet and reducing the use cost of the positive pressure explosion-proof power distribution cabinet.

[0010] Optionally, the processing component includes a second shell, a filter element and a filter baffle; one end of the second shell is connected to and fixedly connected to the first shell, and the other end of the second shell is connected to and fixedly connected to the power distribution cabinet body, the filter element is fixedly connected to the second shell, the filter baffle is detachably connected to the second shell, and the filter baffle is on the same side as the second air outlet.

[0011] By adopting the above technical solution, when the outside air enters the processing component through the first air inlet, the air passes through two layers of dust filter elements and one layer of dehumidification filter element to complete the filtration, and the filtered air enters the power distribution cabinet body through the second air inlet. When the air in the power distribution cabinet enters the processing component through the second air outlet, the air passes through the filter partition to filter the smoke and dust, and then flows out to the natural environment through the first air outlet, thereby reducing the impact of impurities in the air on the electrical equipment in the power distribution cabinet.

[0012] Optionally, the processing component further includes a protection plate, which is disposed around the outside of the filter element and is fixedly connected to the second shell.

[0013] By adopting the above technical solution and setting the protection plate, air must pass through the filter element before entering the main body of the distribution cabinet, thereby further reducing the impact of moisture and dust in the air on the electrical equipment in the distribution cabinet.

[0014] Optionally, the filter element includes two layers of dust filter elements and one layer of dehumidification filter element, the two layers of dust filter elements are symmetrically and fixedly installed in the second shell, and the dehumidification filter element is fixedly installed in the second shell and arranged between the two layers of dust filter elements.

[0015] By adopting the above technical solution, the dust filter element removes dust from the outside air, and the dehumidification filter element reduces the humidity of the outside air, thereby preventing the electrical equipment in the distribution cabinet from being damaged due to excessive humidity.

[0016] Optionally, the ventilation component also includes two isolation plates, which are fixedly connected to both sides of the dual-axis motor, the first output end of the dual-axis motor is passed through and rotatably connected to one of the isolation plates, and the second output end of the dual-axis motor is passed through and rotatably connected to the other isolation plate.

[0017] By adopting the above technical solution, the provision of the isolation plate prevents the gas in the distribution cabinet from mixing with the fresh air.

[0018] Optionally, the processing component also includes a wind shield, which is arranged on the side of the filter baffle away from the second shell, and one end of the wind shield is fixedly connected to the first shell, and the other end of the wind shield is fixedly connected to the distribution cabinet body.

[0019] By adopting the above technical solution, the wind shield is arranged to allow the gas discharged from the power distribution cabinet to enter the first shell from the first exhaust hole.

[0020] Optionally, a rainproof sloping roof is fixedly connected to one end of the power distribution cabinet body away from the processing component.

[0021] By adopting the above technical solution, the rainproof sloping roof prevents rainwater from accumulating on the top of the distribution station body, thereby reducing the possibility of the distribution station body being corroded by rainwater.

[0022] Optionally, a controller is fixedly connected to one end of the power distribution cabinet body close to the rainproof sloping roof, an air pressure sensor is fixedly connected inside the power distribution cabinet body, the dual-axis motor is electrically connected to the controller, and the air pressure sensor is electrically connected to the controller.

[0023] By adopting the above technical solution and setting up the air pressure sensor and the controller, when the air pressure in the distribution cabinet is lower than 200 MPa, the dual-axis motor is started in time to allow outside air to enter the distribution cabinet.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By setting a first shell, a dual-axis motor, an exhaust fan blade, an air blowing fan blade, a ventilation filter and an air blowing filter, when the power distribution cabinet is ready to work, the dual-axis motor drives the exhaust fan blade to rotate, and the air enters the first shell through the ventilation filter, and then enters the processing component through the first air inlet. After passing through the processing component, the air enters the main body of the power distribution cabinet through the second air inlet. While the exhaust fan blades rotate, the dual-axis motor drives the air blowing fan blades to rotate, and the air in the power distribution cabinet enters the processing component through the second air outlet. After passing through the processing component, the air is blown out into the atmosphere through the air blowing filter, thereby realizing the use of air to protect the interior of the power distribution cabinet and reducing the use cost of the positive pressure explosion-proof power distribution cabinet;

[0026] 2. By setting up the second shell, filter element and filter baffle, when the outside air enters the processing component through the first air inlet, the air passes through two layers of dust filter elements and one layer of dehumidification filter element to complete the filtration, and the filtered air enters the main body of the distribution cabinet through the second air inlet. When the air in the distribution cabinet enters the processing component through the second air outlet, the air passes through the filter baffle to filter the smoke and dust, and then flows out to the natural environment through the first air outlet, thereby reducing the impact of impurities in the air on the electrical equipment in the distribution cabinet; 3. By setting up a rainproof sloping roof, rainwater is prevented from accumulating on the top of the distribution station body, thereby reducing the possibility of the distribution station body being corroded by rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0028] Figure 2 It is a cross-sectional view of an embodiment of the present application for displaying a ventilation component.

[0029] Description of reference numerals:

[0030] 1. Ventilation assembly; 11. First housing; 12. First air inlet; 13. First air outlet; 14. Double-axis motor; 15. Suction fan blade; 16. Blowing fan blade; 17. Ventilation filter; 18. Blowing filter; 19. Isolation plate;

[0031] 2. Power distribution cabinet body; 21. Second air inlet; 22. Second air outlet; 23. Air pressure sensor;

[0032] 3. Processing assembly; 31. Second housing; 32. Filter element; 321. Dust filter element; 322. Dehumidification filter element; 33. Filter partition; 34. Wind shield; 35. Protection plate;

[0033] 4. Rainproof sloping roof;

[0034] 5. Controller. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-2 This application is described in further detail.

[0036] The embodiment of the present application discloses a positive pressure explosion-proof power distribution cabinet.

[0037] Reference Figure 1 and Figure 2A positive pressure explosion-proof power distribution cabinet includes a power distribution cabinet body 2, a processing component 3, a ventilation component 1, a rainproof sloping roof 4, a controller 5 and an air pressure sensor 23. The power distribution cabinet body 2 is placed vertically, the processing component 3 is connected to one end of the power distribution cabinet body 2, and the ventilation component 1 is connected to the end of the processing component 3 away from the power distribution cabinet body 2. The rainproof sloping roof 4 is fixedly connected to the end of the power distribution cabinet body 2 away from the processing component 3, and the controller 5 is fixedly connected to the end of the power distribution cabinet body 2 close to the rainproof sloping roof 4. An air pressure sensor 23 is fixedly connected in the power distribution cabinet body 2, and the ventilation component 1, the air pressure sensor 23 and the controller 5 are electrically connected. A second air inlet 21 and a second air outlet 22 are provided at one end of the power distribution cabinet body 2 close to the processing component 3.

[0038] When the power distribution cabinet is ready to work, the ventilation component 1 draws the outside air into the processing component 3. After the processing component 3 completes the air filtration, the clean air is passed into the power distribution cabinet body 2 to protect the electrical appliances in the power distribution cabinet body 2. When the air pressure in the power distribution cabinet body 2 is lower than 200 MPa, the air pressure sensor 23 triggers the controller 5, and the controller 5 triggers the ventilation component 1 to add gas to the power distribution cabinet body 2, thereby realizing the use of air to protect the inside of the power distribution cabinet body 2, reducing the use cost of the positive pressure explosion-proof power distribution cabinet.

[0039] Reference Figure 2The ventilation component 1 includes a first shell 11, a dual-axis motor 14, an exhaust fan blade 15, an air blowing fan blade 16, a ventilation filter 17, an air blowing filter 18 and two isolation plates 19; the first shell 11 is rectangular, and the first shell 11 is fixedly connected to the processing component 3, the fixed end of the dual-axis motor 14 is fixedly connected to the inner wall of the first shell 11 away from the processing component 3, the exhaust fan blade 15 is fixedly connected to the first output end of the dual-axis motor 14, the air blowing fan blade 16 is fixedly connected to the second output end of the dual-axis motor 14, the first output end of the dual-axis motor 14 and the second output end of the dual-axis motor 14 rotate in opposite directions, the exhaust fan blade 15 and the first output end of the dual-axis motor 14 realize the extraction of external air into the first shell 11, and the air blowing fan blade 16 and the second output end of the dual-axis motor 14 realize the discharge of gas in the distribution cabinet body 2. The first housing 11 is provided with a first air inlet 12 and a first air outlet 13 at one end close to the processing assembly 3. The first air inlet 12 is on the same side as the exhaust fan blade 15, and the first air outlet 13 is on the same side as the blowing fan blade 16. The second air inlet 21 is coaxial with the first air inlet 12, and the second air outlet 22 is coaxial with the first air outlet 13. The ventilation filter 17 is fixedly connected to the side of the first housing 11 close to the exhaust fan blade 15, and the blowing filter 18 is fixedly connected to the side of the first housing 11 close to the blowing fan blade 16. Two isolation plates 19 are fixedly connected to the first housing 11 and are arranged on both sides of the dual-axis motor 14. The first output end of the dual-axis motor 14 is penetrated and rotatably connected to one of the isolation plates 19, and the second output end of the dual-axis motor 14 is penetrated and rotatably connected to the other isolation plate 19. The dual-axis motor 14 is electrically connected to the controller 5, and the controller 5 is electrically connected to the air pressure sensor 23.

[0040] When the ventilation assembly 1 starts to work, the dual-axis motor 14 drives the exhaust fan blades 15 to rotate, and the air enters the first housing 11 through the ventilation filter 17, and then enters the processing assembly 3 through the first air inlet 12. After passing through the processing assembly 3, the air enters the power distribution cabinet body 2 through the second air inlet 21. While the exhaust fan blades 15 rotate, the dual-axis motor 14 drives the blowing fan blades 16 to rotate, and the air in the power distribution cabinet body 2 enters the processing assembly 3 through the second air outlet 22. After passing through the processing assembly 3, the air passes through the first air outlet 13 and reaches the first housing 11, and then blows out through the blowing filter 18.

[0041] refer to Figure 2The processing component 3 includes a second shell 31, a filter element 32, a protective plate 35, a filter baffle 33 and a windshield 34. The second shell 31 is rectangular, and the two ends of the second shell 31 are open. One end of the second shell 31 is fixedly connected to the first shell 11, and the other end of the second shell 31 is fixedly connected to the power distribution cabinet body 2. The filter element 32 is fixedly connected to the middle and upper part of the second shell 31. The filter element 32 is divided into three layers along the vertical direction. The two layers of dust filter elements 321 are symmetrical and fixedly installed in the second shell 31. The dust filter element 32 is fixedly installed in the second shell 31 and arranged between the two layers of dust filter elements 321. The filter baffle 33 is detachably connected to the second shell 31, and the filter baffle 33 is on the same side as the second air outlet 22. The windshield 34 is arranged on the side of the filter baffle 33 away from the second shell 31, and the two ends of the windshield 34 are respectively fixedly connected to the first shell 11 and the power distribution cabinet body 2.

[0042] When the outside air enters the processing assembly 3 through the first air inlet 12, the air passes through two layers of dust filter elements 321 and one layer of dehumidification filter element 322 to complete the filtration, and the filtered air enters the power distribution cabinet body 2 through the second air inlet 21. When the air in the power distribution cabinet body 2 enters the processing assembly 3 through the second air outlet 22, the air passes through the filter baffle 33 to filter the smoke and dust, and then flows out to the natural environment through the first air outlet 13.

[0043] The implementation principle of a positive pressure explosion-proof distribution cabinet in the embodiment of the present application is as follows: when the distribution cabinet is ready to work, the dual-axis motor 14 is started, driving the exhaust fan blades 15 to rotate, and the outside air enters the filter element 32 through the first air inlet. The outside air is filtered by two layers of dust filter elements 321 and one layer of dehumidification filter element 322, and finally enters the distribution cabinet body 2 through the second air inlet. At the same time, the air in the distribution cabinet, driven by the blowing fan blades 16, passes through the second air outlet 22 and enters the second shell 31. After the air in the distribution cabinet further passes through the filter baffle 33, the filtered gas enters the first shell 11 through the first air inlet, and then, under the action of the blowing fan blades 16, it is blown out of the first shell 11 through the blowing filter 18. When the air pressure in the distribution cabinet body 2 is too low, the air pressure sensor 23 triggers the controller 5, and the controller 5 triggers the dual-axis motor 14 to start, thereby replenishing gas into the distribution cabinet body 2, thereby using air to protect the inside of the distribution cabinet body 2 and reducing the use cost of the positive pressure explosion-proof distribution cabinet.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A positive pressure explosion-proof distribution cabinet, characterized in that: The invention comprises a power distribution cabinet body (2), a processing component (3) and a ventilation component (1); the processing component (3) is connected to one end of the power distribution cabinet body (2); the processing component (3) is used to filter the gas entering the power distribution cabinet body (2); the ventilation component (1) is connected to the end of the processing component (3) away from the power distribution cabinet body (2); and the end of the power distribution cabinet body (2) close to the processing component (3) is provided with a second air inlet (21) and a second air outlet (22); The ventilation component (1) comprises a first shell (11), a dual-axis motor (14), an exhaust fan blade (15), an air blowing fan blade (16), a ventilation filter (17) and an air blowing filter (18); the first shell (11) is connected to the processing component (3); a fixed end of the dual-axis motor (14) is fixedly connected to an end of the inner wall of the first shell (11) away from the processing component (3); the exhaust fan blade (15) is fixedly connected to a first output end of the dual-axis motor (14); the air blowing fan blade (16) is fixedly connected to a second output end of the dual-axis motor (14); the first output end and the second output end of the dual-axis motor (14) have opposite rotation directions; A first air inlet (12) and a first air outlet (13) are provided at one end of a housing (11) close to the processing component (3); the first air inlet (12) and the exhaust fan blade (15) are arranged on the same side, and the first air outlet (13) and the blowing fan blade (16) are arranged on the same side; the second air inlet (21) and the first air inlet (12) are coaxial, and the second air outlet (22) and the first air outlet (13) are coaxial; the ventilation filter (17) is fixedly connected to the first housing (11) on one side close to the exhaust fan blade (15); and the blowing filter (18) is fixedly connected to the first housing (11) on one side close to the blowing fan blade (16).

2. A positive pressure explosion-proof distribution cabinet according to claim 1, characterized in that: The processing assembly (3) comprises a second housing (31), a filter element (32) and a filter baffle (33); one end of the second housing (31) is connected to and fixedly connected to the first housing (11), and the other end of the second housing (31) is connected to and fixedly connected to the power distribution cabinet body (2); the filter element (32) is fixedly connected to the second housing (31); the filter baffle (33) is detachably connected to the second housing (31), and the filter baffle (33) is on the same side as the second air outlet (22).

3. A positive pressure explosion-proof distribution cabinet according to claim 2, characterized in that: The processing assembly (3) further comprises a protection plate (35), the protection plate (35) being arranged around the outside of the filter element (32), and the protection plate (35) being fixedly connected to the second housing (31).

4. A positive pressure explosion-proof power distribution cabinet according to claim 2, characterized in that: The filter element (32) comprises two layers of dust filter elements (321) and one layer of dehumidification filter element (322); the two layers of the dust filter elements (321) are symmetrically and fixedly installed in the second housing (31); the dehumidification filter element (322) is fixedly installed in the second housing (31) and is arranged between the two layers of the dust filter elements (321).

5. The positive pressure explosion-proof power distribution cabinet according to claim 1, characterized in that: The ventilation component (1) further comprises two isolation plates (19), wherein the two isolation plates (19) are fixedly connected to two sides of the dual-axis motor (14), a first output end of the dual-axis motor (14) is passed through and rotatably connected to one of the isolation plates (19), and a second output end of the dual-axis motor (14) is passed through and rotatably connected to the other of the isolation plates (19).

6. A positive pressure explosion-proof power distribution cabinet according to claim 2, characterized in that: The processing assembly (3) further comprises a wind shield (34), the wind shield (34) being arranged on a side of the filter baffle (33) away from the second housing (31), and one end of the wind shield (34) being fixedly connected to the first housing (11), and the other end of the wind shield (34) being fixedly connected to the power distribution cabinet body (2).

7. The positive pressure explosion-proof power distribution cabinet according to claim 1, characterized in that: One end of the power distribution cabinet body (2) away from the processing assembly (3) is fixedly connected to a rainproof inclined roof (4).

8. A positive pressure explosion-proof power distribution cabinet according to claim 7, characterized in that: A controller (5) is fixedly connected to one end of the power distribution cabinet body (2) close to the rainproof sloping roof (4), an air pressure sensor (23) is fixedly connected inside the power distribution cabinet body (2), the dual-axis motor (14) is electrically connected to the controller (5), and the air pressure sensor (23) is electrically connected to the controller (5).

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