A metal-clad draw-out type AC switchgear with armor

Abstract

The present application discloses an armored draw-out type AC metal-enclosed switchgear, which includes a cabinet body, a temperature reduction component and a cooling component; the cooling component includes a water storage tank, and the water storage tank is arranged on the cabinet body; the temperature reduction component includes a through pipe, the through pipe penetrates through the water storage tank and extends into the cabinet body, and a fan is arranged in the cabinet body. The present application can improve the situation that the use of electrical equipment is affected due to the heat accumulation inside the cabinet body.

Description

Technical Field

[0001] The present application relates to the technical field of switchgear, and in particular to an armored draw-out type AC metal-enclosed switchgear. Background Art

[0002] The armored draw-out type AC metal-enclosed switchgear belongs to a complete set of power distribution devices for a three-phase AC 50Hz single-bus sectionalized system or a double-bus sectionalized system, and is mainly applied to power distribution in power plants, substations, industrial and mining enterprises, railway transportation, and high-rise buildings.

[0003] The armored draw-out type AC metal-enclosed switchgear generally includes a cabinet body and a trolley. The interior of the cabinet body is divided into four independent compartments: a circuit breaker trolley compartment, a busbar compartment, a cable compartment, and a relay and instrument compartment.

[0004] However, in the related art, there are many internal circuits in the cabinet body, and a large amount of heat energy will be generated during the operation of electrical components, resulting in the accumulation of internal heat and affecting the use of electrical equipment. Summary of the Invention

[0005] In order to improve the situation where the use of electrical equipment is affected due to the accumulation of internal heat in the cabinet body, the present application provides an armored draw-out type AC metal-enclosed switchgear.

[0006] The present application provides an armored draw-out type AC metal-enclosed switchgear, adopting the following technical solutions:

[0007] An armored draw-out type AC metal-enclosed switchgear includes a cabinet body, a temperature reduction component, and a cooling component;

[0008] The cooling component includes a water storage tank, and the water storage tank is arranged on the cabinet body;

[0009] The temperature reduction component includes a through pipe, the through pipe penetrates through the water storage tank and extends into the cabinet body, and a fan is arranged in the cabinet body.

[0010] By adopting the above technical solutions, when the fan rotates, the outside air enters the cabinet body through the through pipe, thereby cooling the circuit devices inside the cabinet body; the water storage tank stores cooling water, and when the air in the through pipe passes through the water storage tank, the water storage tank can cool the air in the through pipe, further improving the situation where the use of electrical equipment is affected due to the accumulation of internal heat in the cabinet body.

[0011] Optionally, the cooling component includes a flow cavity, the flow cavity is arranged on the side wall of the cabinet body, and the flow cavity is communicated with the water storage tank;

[0012] On one side of the cabinet body away from the water storage tank, a water collection tank is provided, and the water collection tank is communicated with the circulation cavity; a water pump for pumping the liquid in the water collection tank into the water storage tank is arranged in the water collection tank.

[0013] By adopting the above technical solution, since the circulation cavity is arranged on the side wall of the cabinet body, when the cooling water in the water storage tank flows into the water collection tank through the circulation cavity, the cooling water can cool the side wall of the cabinet body, thereby improving the cooling efficiency, reducing the temperature of the cabinet body surface, and further reducing the temperature inside the cabinet body; the cooling water in the water collection tank is pumped back into the water storage tank by the water pump, realizing the recycling of the cooling water.

[0014] Optionally, fins for slowing down the water flow velocity are arranged in the circulation cavity.

[0015] By adopting the above technical solution, when the cooling water flows downward along the cooling cavity, the fins slow down the flow velocity of the cooling water, thereby increasing the contact time between the cooling water and the side wall of the cabinet body, and further improving the cooling efficiency.

[0016] Optionally, there are two circulation cavities, and the two circulation cavities are respectively located on opposite sides of the cabinet body.

[0017] By adopting the above technical solution, the two circulation cavities are respectively arranged on both sides of the cabinet body, and the cooling water in the water storage tank flows downward from the circulation cavities on both sides respectively, which can cool both sides of the cabinet body at the same time and improve the cooling efficiency.

[0018] Optionally, a switch member for intermittently controlling the start and stop of the water pump is arranged in the cabinet body.

[0019] By adopting the above technical solution, when the switch member intermittently controls the start of the water pump, the cooling water in the water collection tank can be intermittently pumped back into the water storage tank, instead of always turning on the water pump to save electric energy.

[0020] Optionally, partitions are arranged at intervals on the top wall of the cabinet body, and a rotating assembly is arranged on the partitions. The rotating assembly includes a cam that rotates with the fan;

[0021] An opening and closing assembly is further arranged between the partition and the top wall of the cabinet body. The opening and closing assembly includes a slider and a plug cover that are slidably arranged on the partition. The slider abuts against the cam, and the slider is used to drive the plug cover to open and close the circulation cavity; a reset member for resetting the slider is further arranged on the slider.

[0022] By adopting the above technical solution, when the fan rotates, the fan drives the cam to rotate, thereby intermittently pushing the slider to move, and the reset member resets the slider, so that the plug cover can intermittently open and close the flow cavity, and further enables the water in the water storage tank to intermittently flow downward, enabling a certain amount of cooling water to be stored in the water storage tank to cool the top of the cabinet body and the air passing through the through pipe.

[0023] Optionally, the rotating assembly includes an output rod and a rotating rod, and the output rod is connected to the rotating shaft of the fan;

[0024] The rotating rod passes through the partition board, one end of the rotating rod is connected to the output rod, and the cam is connected to the other end of the rotating rod;

[0025] The rotating assembly includes a reducer, the reducer is connected to the partition board, and both the rotating rod and the output rod are installed on the reducer.

[0026] By adopting the above technical solution, when the fan rotates, the fan drives the output rod to rotate, and the reducer can make the rotating rod rotate at a slower speed, thereby reducing the frequency of the cam pushing the slider, that is, increasing the intermittent time, enabling more cooling water to be stored in the water storage tank, and improving the cooling performance of the water storage tank.

[0027] Optionally, the opening and closing assembly includes a moving rod and a sealing plate; the sealing plate is fixedly connected to the top wall of the cabinet body and the partition board respectively, and a sealing cavity is formed on the side of the sealing plate away from the cam;

[0028] The moving rod passes through the sealing plate, one end of the moving rod is connected to the slider, and the other end of the moving rod is connected to the plug cover.

[0029] By adopting the above technical solution, the sealing cavity formed by the sealing plate can reduce the situation that the cooling water in the flow cavity seeps into the cabinet body, improving the sealing performance; the cam pushes the slider to move, causing the slider to push the moving rod and drive the plug cover to move, so as to close the flow cavity and stop the cooling water from flowing downward; the reset member pushes the slider to reset, and at the same time the slider drives the plug cover to reset, and then the flow cavity can be opened to make the cooling water continue to flow downward.

[0030] Optionally, the reset member is a spring, the spring is sleeved on the moving rod, one end of the spring is connected to the sealing plate, and the other end of the spring is connected to the slider.

[0031] By adopting the above technical solution, when the cam pushes the slider to move, the spring contracts; when the cam continues to rotate, the spring pushes the slider to reset, so that the slider drives the plug cover to open and close the flow cavity.

[0032] Optionally, the delay switch is arranged on the partition board, and the contact of the delay switch abuts against the cam.

[0033] By adopting the above technical solution, when the cam presses the contact of the delay switch, the delay switch controls the start of the water pump, so as to pump the cooling water in the water collection tank into the water storage tank. After a certain period of time, the contact of the delay switch resets, and the water pump stops working. Thus, the delay switch intermittently controls the opening and closing of the water pump.

[0034] In summary, the present application includes at least one of the following beneficial effects:

[0035] 1. When the fan rotates, it allows the outside air to enter the cabinet through the ventilation pipe, thereby cooling the circuit components inside the cabinet; the water storage tank stores cooling water. When the air in the ventilation pipe passes through the water storage tank, the water storage tank can cool the air in the ventilation pipe, further improving the situation where the use of electrical equipment is affected by the heat accumulation inside the cabinet;

[0036] 2. The delay switch can intermittently control the opening and closing of the water pump, so as to control the intermittent pumping of the cooling water from the water collection tank to the water storage tank. The water pump does not need to be continuously turned on, thus saving electricity;

[0037] 3. The fan drives the cam to rotate, and the cam intermittently pushes the push block, thereby intermittently opening and closing the plug cover of the flow cavity, so that the water storage tank can store a certain amount of cooling water, and the cooling tank can cool the top of the cabinet. Description of the Drawings

[0038] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0039] Figure 2 is the sectional view of the embodiment of the present application;

[0040] Figure 3 is the schematic diagram of the side wall section of the cabinet in the embodiment of the present application;

[0041] Figure 4 is the schematic diagram of the switch control mechanism in the embodiment of the present application.

[0042] Description of the reference numerals: 1, cabinet; 2, temperature reduction component; 21, ventilation pipe; 22, air collecting hood; 23, fan; 24, dust-proof cover; 3, cooling component; 31, water storage tank; 32, flow cavity; 33, fin; 34, water collection tank; 35, water pump; 36, water delivery pipe; 4, switch control mechanism; 41, partition board; 42, rotating component; 421, output rod; 422, rotating rod; 423, speed reducer; 424, cam; 43, opening and closing component; 431, slider; 432, moving rod; 433, plug cover; 434, sealing plate; 435, limiting plate; 44, resetting component; 441, spring; 45, switch component; 451, delay switch. Detailed Embodiments

[0043] The following is combined with Figures 1-4 This application is described in further detail.

[0044] The embodiment of the present application discloses an armored removable AC metal-enclosed switchgear.

[0045] Reference Figure 1 An armored removable AC metal enclosed switchgear includes a cabinet 1, a cooling component 2 and a cooling component 3. The electrical components are arranged in the cabinet 1, the cooling component 2 is arranged on the cabinet 1 for cooling the cabinet 1, and the cooling component 3 is also arranged on the cabinet 1 for cooling the surface of the cabinet 1.

[0046] refer to Figure 2 The cabinet body 1 is a rectangular body as a whole. A water storage tank 31 is fixedly connected to the upper surface of the cabinet body 1. The water storage tank 31 is filled with cooling water.

[0047] refer to Figure 2 The cooling component 2 includes a through pipe 21, and a plurality of through pipes 21 are provided. The through pipes 21 are inserted into the water storage tank 31, and the through pipes 21 pass through the top wall of the cabinet 1, that is, the through pipe 21 connects the external air with the cabinet 1. A dust cover 24 is fixedly connected to the top of the through pipe 21, and the top of the dust cover 24 is impermeable to reduce the situation where rainwater and the like enter the through pipe 21. The bottom end of the dust cover 24 can pass air, and the air can enter the through pipe 21 from the bottom end of the dust cover 24, so that the dust in the air entering the through pipe 21 can be filtered. A desiccant is also provided in the dust cover 24 for drying the air entering the through pipe 21.

[0048] refer to Figure 2 The cooling assembly 2 further includes an air collecting hood 22, which is disposed below the water storage tank 31 and is located at the top of the cabinet 1. The air collecting hood 22 is fixedly connected to the four inner walls of the cabinet 1 to form a funnel-shaped cavity. An opening is provided below the air collecting hood 22, and a fan 23 is fixedly connected to the opening of the air collecting hood 22.

[0049] When the fan 23 rotates, the outside air can be drawn into the cabinet 1 through the through pipe 21, thereby achieving the effect of cooling the electrical components in the cabinet 1. The through pipe 21 passes through the water storage tank 31, and the cooling water in the water storage tank 31 can cool the through pipe 21, thereby reducing the temperature of the air entering the cabinet 1 and improving the cooling efficiency.

[0050] refer to Figure 2, the cooling assembly 3 includes a circulation cavity 32. The circulation cavity 32 is a rectangular plate with a cavity. There are two circulation cavities 32, and the two circulation cavities 32 are respectively fixedly connected to both sides of the cabinet body 1. The circulation cavity 32 is communicated with the water storage tank 31. A fin 33 is fixedly connected inside the circulation cavity 32. The fin 33 is in the shape of a corrugated plate and there are multiple fins 33. The multiple fins 33 are arranged at intervals. When the cooling water flows from the water storage tank 31 into the circulation cavity 32, it can cool the outer wall of the cabinet body 1. The corrugated fins 33 can slow down the flow rate of the water flow and increase the time of heat exchange between the water flow and the cabinet body 1 to improve the cooling efficiency.

[0051] Reference Figure 2 and Figure 3 , the cooling assembly 3 further includes a water collecting tank 34. The water collecting tank 34 is fixedly connected to the side of the cabinet body 1 away from the cabinet door, and the water collecting tank 34 is located at the bottom of the cabinet body 1. The water collecting tank 34 is respectively communicated with the two circulation cavities 32. When the water in the water storage tank 31 flows through the circulation cavity 32 and then into the water collecting tank 34, it is temporarily stored in the water collecting tank 34. At the same time, the water collecting tank 34 can also cool and lower the temperature of the side of the cabinet body 1 away from the cabinet door. A water delivery pipe 36 is arranged on the water collecting tank 34. One end of the water delivery pipe 36 is communicated with the water collecting tank 34, and the other end of the water delivery pipe 36 is communicated with the water storage tank 31. A water pump 35 is arranged in the water collecting tank 34. When the water pump 35 is turned on, the water pump 35 pumps the cooling water in the water collecting tank 34 into the water delivery pipe 36 and is transported to the water storage tank 31 by the water delivery pipe 36, thus realizing the circulating flow of the cooling water.

[0052] Reference Figure 2 and Figure 4 , a switch control mechanism 4 is arranged on the air collecting hood 22. The switch control mechanism 4 includes a partition plate 41. The partition plate 41 is arranged between the top wall of the cabinet body 1 and the air collecting hood 22, and there is a gap between the partition plate 41 and the top wall of the cabinet body 1. The partition plate 41 is parallel to the top wall of the cabinet body 1. The partition plate 41 is fixedly connected to the side wall of the cabinet body 1. A cavity is formed between the partition plate 41 and the top wall of the cabinet body 1, and the cavity is communicated with the air collecting hood 22, so as not to affect the entry of external air into the interior of the cabinet body 1.

[0053] Reference Figure 4 , a speed reducer 423 is fixedly connected to the bottom side of the partition plate 41. An output rod 421 is fixedly connected to the output shaft of the fan 23, and the output rod 421 is installed in the speed reducer 423. The speed reducer 423 also installs a rotating rod 422. The rotating rod 422 passes through the partition plate 41. A bearing is sleeved on the rotating rod 422, and the bearing is fixedly connected to the partition plate 41. A cam 424 is fixedly connected to the top end of the rotating rod 422.

[0054] When the fan 23 drives the output rod 421 to rotate, after being decelerated by the speed reducer 423, the rotation speed of the rotating rod 422 is lower than that of the output rod 421, and the rotating rod 422 drives the cam 424 to rotate at a slower speed.

[0055] Reference Figure 4 , a sealing plate 434 is provided between the partition plate 41 and the top wall of the cabinet body 1. The sealing plate 434 is fixedly connected to both the top wall of the cabinet body 1 and the partition plate 41. The sealing plate 434 is parallel and spaced from the side wall of the cabinet board, so that a sealing cavity is formed between the sealing plate 434 and the side wall of the cabinet body 1 closest to the sealing plate 434. The sealing plate 434 can prevent cooling water from entering the air collecting hood 22.

[0056] Reference Figure 4 , the switch control mechanism 4 further includes a limiting plate 435. The limiting plate 435 is fixedly connected to the partition plate 41. The limiting plate 435 is located on the side of the sealing plate 434 close to the cam 424. There are two limiting plates 435. A sliding block 431 is slidably arranged between the two limiting plates 435. The sliding block 431 can contact the cam 424, and the cam 424 can push the sliding block 431 to move. In other embodiments of the present application, a dovetail groove can also be provided on the partition plate 41, a dovetail block can be provided on the sliding block 431, and the dovetail block is slidably engaged with the dovetail groove.

[0057] Reference Figure 4 , a moving rod 432 passes through the sealing plate 434. One end of the moving rod 432 is fixedly connected to the sliding block 431, and the other end of the moving rod 432 is fixedly connected to a plug cover 433. The plug cover 433 can slide in the sealing cavity, so as to open or block the flow cavity 32, and realize the on-off of the flow of cooling water in the flow cavity 32. The plug cover 433 has a certain sealing performance and can prevent the cooling water in the flow cavity 32 from entering the sealing cavity. A spring 441 is arranged between the sealing cover and the sliding block 431. One end of the spring 441 is fixedly connected to the sealing plate 434, and the other end of the spring 441 is fixedly connected to the sliding block 431.

[0058] When the fan 23 drives the cam 424 to rotate, when the cam 424 contacts the sliding block 431, the cam 424 pushes the sliding block 431 to move along the length direction of the limiting plate 435. Subsequently, the moving rod 432 pushes the plug cover 433 to move to close the flow cavity 32. At this time, the cooling water no longer flows downward in the flow cavity 32. When the cam 424 continues to rotate, under the action of the elastic force of the spring 441, the sliding block 431 is pushed to reset, the plug cover 433 opens the flow cavity 32, and the flow cavity 32 can continue to flow downward with cooling water. The continuous rotation of the cam 424 realizes the intermittent opening and closing of the plug cover 433 for the flow cavity 32, and further realizes the intermittent downward flow of cooling water in the flow cavity 32.

[0059] In this embodiment, the plug cover 433, the moving rod 432, the sealing plate 434, the spring 441, the limiting plate 435 and the sliding block 431 are symmetrically arranged with the rotating rod 422 as the center, that is, the cooling water can flow intermittently in both the flow cavities 32 on both sides.

[0060] Reference Figure 4, the switch control mechanism 4 further includes a switch member 45. The switch member 45 is a time-delay switch 451. The time-delay switch 451 is fixedly connected to the partition 41. The contact of the time-delay switch 451 can contact the cam 424. The time-delay switch 451 is used to control the start and stop of the water pump 35. In this embodiment, the time-delay switch 451 is an electrified time-delay relay, specifically an air damping type time-delay relay. When the cam 424 contacts the contact of the time-delay switch 451, the time-delay switch 451 controls the start of the water pump 35. After a period of time delay, the contact resets, and the contact can contact the cam 424 again, thus realizing the intermittent control of the start of the water pump 35.

[0061] The implementation principle of an armored draw-out type AC metal-enclosed switchgear in an embodiment of the present application is as follows: The fan 23 rotates to draw the outside air into the cabinet 1 through the through pipe 21, thereby cooling the internal power devices of the cabinet 1. At the same time, the fan 23 also drives the output rod 421 and the rotating rod 422 to rotate, so that the cam 424 pushes the slider 431 to reciprocate, realizing the intermittent circulation of the cooling water in the flow cavity 32. The cam 424 also intermittently touches the time-delay switch 451, thereby intermittently controlling the start of the water pump 35, and intermittently pumping the cooling water in the water collection tank 34 into the water storage tank 31 to save electric energy.

[0062] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A metal-clad withdrawable AC switchgear, characterized in that: It includes a cabinet body (1), a cooling component (2) and a refrigerating component (3); The refrigerating component (3) includes a water storage tank (31), and the water storage tank (31) is arranged on the cabinet body (1); The cooling component (2) includes a through pipe (21), the through pipe (21) penetrates through the water storage tank (31) and extends into the cabinet body (1), and a fan (23) is arranged in the cabinet body (1); Partition boards (41) are arranged at intervals on the top wall of the cabinet body (1), a rotating component (42) is arranged on the partition boards (41), and the rotating component (42) includes a cam (424) that rotates with the fan (23); An opening and closing component (43) is further arranged between the partition board (41) and the top wall of the cabinet body (1), the opening and closing component (43) includes a slider (431) and a plug cover (433) that are slidably arranged on the partition board (41), the slider (431) abuts against the cam (424), and the slider (431) is used to drive the plug cover (433) to open and close a circulation cavity (32); A reset member (44) for resetting the slider (431) is further arranged on the slider (431); The refrigerating component (3) includes a circulation cavity (32), the circulation cavity (32) is arranged on the side wall of the cabinet body (1), and the circulation cavity (32) is communicated with the water storage tank (31); A water collection tank (34) is arranged on one side of the cabinet body (1) away from the water storage tank (31), and the water collection tank (34) is communicated with the circulation cavity (32); A water pump (35) for pumping the liquid in the water collection tank (34) into the water storage tank (31) is arranged in the water collection tank (34); The opening and closing component (43) includes a moving rod (432) and a sealing plate (434); The sealing plate (434) is fixedly connected to the top wall of the cabinet body (1) and the partition board (41) respectively, and a sealing cavity is formed on one side of the sealing plate (434) away from the cam (424); The moving rod (432) penetrates through the sealing plate (434), one end of the moving rod (432) is connected to the slider (431), and the other end of the moving rod (432) is connected to the plug cover (433).

2. The armored draw-out type AC metal-clad switchgear according to claim 1, wherein: Fins (33) for slowing down the water flow rate are arranged in the circulation cavity (32).

3. The armored draw-out type AC metal-enclosed switchgear according to claim 2, characterized in that: There are two circulation cavities (32), and the two circulation cavities (32) are respectively located on opposite sides of the cabinet body (1).

4. A metal-clad draw-out type AC metal-enclosed switchgear according to claim 1, characterized in that: A switch member (45) for intermittently controlling the start and stop of the water pump (35) is arranged in the cabinet body (1).

5. A metal-clad withdrawable AC switchgear according to claim 1, characterized in that: The rotating component (42) includes an output rod (421) and a rotating rod (422), and the output rod (421) is connected to the rotating shaft of the fan (23); The rotating rod (422) penetrates through the partition board (41), one end of the rotating rod (422) is connected to the output rod (421), and the cam (424) is connected to the other end of the rotating rod (422); The rotating assembly (42) includes a speed reducer (423), the speed reducer (423) is connected to the partition plate (41), and both the rotating rod (422) and the output rod (421) are mounted on the speed reducer (423).

6. A metal-clad draw-out type AC metal-enclosed switchgear according to claim 1, characterized in that: The reset member (44) is a spring (441), the spring (441) is sleeved on the moving rod (432), one end of the spring (441) is connected to the sealing plate (434), and the other end of the spring (441) is connected to the slider (431).

7. A metal-clad draw-out type AC metal-enclosed switchgear according to claim 4, characterized in that: The switch member (45) is a delay switch (451), the delay switch (451) is arranged on the partition plate (41), and the contact of the delay switch (451) abuts against the cam (424).

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