Safety pressure relief device for power distribution cabinet

Abstract

The utility model is applicable to the technical field of power distribution cabinets, and provides a safety pressure relief device for a power distribution cabinet, which comprises a flood discharge roof, a pressure relief device, a pressure relief device, a pressure relief device and a pressure relief device, and is characterized in that the top of the flood discharge roof is fixedly connected with a top plate, and a flood discharge port is formed in the middle of the top plate; a rotating rod is fixedly connected to the side wall of one side of the flood discharge opening, a flood discharge plate is rotationally connected to the other side of the rotating rod, and the side wall of the flood discharge plate makes contact with the side wall of the flood discharge opening; a plurality of springs are arranged between the side, close to the rotating rod, of the upper end of the top plate and the flood discharge plate, by arranging the flood discharge plate, when the pressure is large, gas rushes through the flood discharge plate, so that the flood discharge plate rotates on the rotating rod and extrudes the springs, when the gas is small, the flood discharge plate is reset due to the elastic force action of the springs, and when the pressure is especially large and the flood discharge plate is impacted to be in a vertical state, the springs are reset. And the enlarged opening is opened, so that the pressure relief range is enlarged conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of power distribution cabinets, and in particular relates to a safety pressure relief device for a power distribution cabinet. Background Art

[0002] Switchgear is a type of switchgear used in electrical applications. Its primary function is to open and close, control, and provide protection during the generation, transmission, distribution, and conversion of power in power systems. It is primarily used in power plants, substations, petrochemicals, metallurgy, steel rolling, light industry, textiles, factories, mining enterprises, residential communities, high-rise buildings, and other diverse applications. During switchgear operation, internal arc faults, which are short-circuits caused by various reasons, are the most serious switchgear failures. Arcing generates heat and pressure. If the high-temperature, high-pressure gas within the confined cabinet cannot be effectively released quickly, it can cause the switchgear to explode, posing a serious threat to personnel. Electrical switchgear is typically equipped with dust and pressure relief devices.

[0003] The prior art also has the following deficiencies:

[0004] The existing pressure relief device is to set a cover on the top of the switch cabinet. When high-pressure gas is generated, the cover is pushed up, but the cover cannot automatically recover after the pressure relief is completed. It usually needs to be manually reinstalled, which is not convenient to use. Utility Model Content

[0005] The utility model provides a safety pressure relief device for a power distribution cabinet, aiming to solve the problem that the existing pressure relief device is to set a cover plate on the top of the switch cabinet. When high-pressure gas is generated, the cover plate is pushed up, but the cover plate cannot be automatically restored after the pressure relief is completed. It usually needs to be manually reinstalled, which is inconvenient to use.

[0006] The utility model is implemented as follows: a safety pressure relief device for a power distribution cabinet comprises: a flood discharge top, the top of the flood discharge top is fixedly connected to a top plate, a flood discharge outlet is opened in the middle of the top plate; a side wall on one side of the flood discharge outlet is fixedly connected to a rotating rod, the other side of the rotating rod is rotatably connected to a flood discharge plate, the side wall of the flood discharge plate is in contact with the side wall of the flood discharge outlet; a plurality of springs are arranged between the side of the upper end of the top plate close to the rotating rod and the flood discharge plate.

[0007] Preferably, the upper end of the top plate is detachably fixedly connected to a first connecting plate on one side close to the rotating rod; the upper end of the flood discharge plate is fixedly connected to a pressure plate on one side close to the rotating rod; the pressure plate is detachably fixedly connected to a second connecting plate on one side close to the first connecting plate, and the two sides of several of the springs are respectively fixedly connected to the first connecting plate and the second connecting plate.

[0008] Preferably, the bottom of the flood discharge roof is fixedly connected to a bottom plate, and a through hole is opened in the middle of the bottom plate.

[0009] Preferably, enlarged openings are provided at the front and rear ends and the lower right end of the flood discharge roof.

[0010] Preferably, connecting rods are fixedly connected to the front and rear ends and the right end of the lower end of the flood discharge plate, and the same baffle is fixedly connected between the lower ends of every two of the six connecting rods close to one side.

[0011] Preferably, the height of the baffle is half of the height of the inner wall of the flood discharge top, and the three enlarged openings are respectively located in the middle of the heights of the three baffles.

[0012] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0013] By setting up a flood discharge plate, when the pressure is high, the gas will push open the flood discharge plate, causing the flood discharge plate to rotate on the rotating rod and squeeze the spring. When the gas is small, the flood discharge plate will reset due to the elastic force of the spring. When the pressure is particularly high and the flood discharge plate is impacted into a vertical state, the baffle will be driven to rise and the enlarged port will be opened, thereby increasing the pressure relief range. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model when the flood discharge plate is opened;

[0016] Figure 3 This utility model Figure 1 A in the middle is an enlarged structural diagram;

[0017] In the figure: 1. flood discharge top; 2. bottom plate; 3. through hole; 4. top plate; 5. rotating rod; 6. flood discharge plate; 7. first connecting plate; 8. pressure plate; 9. second connecting plate; 10. spring; 11. enlarged opening; 12. connecting rod; 13. baffle. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0019] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] The present invention provides a safety pressure relief device for a power distribution cabinet. Figure 1-3 As shown, it includes: a flood discharge top 1, the top of the flood discharge top 1 is fixedly connected to a top plate 4, and a flood discharge outlet is opened in the middle of the top plate 4; a side wall of one side of the flood discharge outlet is fixedly connected to a rotating rod 5, and the other side of the rotating rod 5 is rotatably connected to a flood discharge plate 6, and the side wall of the flood discharge plate 6 is in contact with the side wall of the flood discharge outlet; a plurality of springs 10 are arranged between the side of the upper end of the top plate 4 close to the rotating rod 5 and the flood discharge plate 6.

[0021] It should be noted that, since the existing pressure relief device is to set a cover plate on the top of the switch cabinet, when high-pressure gas is generated, the cover plate is pushed up, but the cover plate cannot automatically recover after the pressure relief is completed, and usually needs to be manually reinstalled, which is not convenient to use. This solution sets a flood discharge plate 6. When the pressure is high, the gas will open the flood discharge plate 6, causing the flood discharge plate 6 to rotate on the rotating rod 5 and squeeze the spring 10. When the gas is small, due to the elastic force of the spring 10, the flood discharge plate 6 is reset. When the pressure is particularly high and the flood discharge plate 6 is impacted in a vertical state, the baffle 13 is driven to rise, opening the enlarged port 11, so as to increase the pressure relief range.

[0022] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the upper end of the top plate 4 is detachably fixedly connected to the first connecting plate 7 on one side near the rotating rod 5; the upper end of the flood discharge plate 6 is fixedly connected to the pressure plate 8 on one side near the rotating rod 5; the pressure plate 8 is detachably fixedly connected to the second connecting plate 9 on one side near the first connecting plate 7, and the two sides of a number of springs 10 are respectively fixedly connected to the first connecting plate 7 and the second connecting plate 9.

[0023] In this embodiment, it is easy to disassemble and replace.

[0024] In a further preferred embodiment of the present invention, Figure 1 As shown, the bottom of the flood discharge roof 1 is fixedly connected to a bottom plate 2 , and a through hole 3 is opened in the middle of the bottom plate 2 .

[0025] In this embodiment, pressure relief is facilitated.

[0026] In a further preferred embodiment of the present invention, Figure 1 As shown, enlarged openings 11 are provided at the front and rear ends and the lower right end of the flood discharge top 1 .

[0027] In this embodiment, it is convenient to increase the pressure relief area.

[0028] In a further preferred embodiment of the present invention, Figure 1 As shown, the front and rear ends and the right end of the lower end of the flood discharge plate 6 are fixedly connected with connecting rods 12, and the lower ends of each two of the six connecting rods 12 close to one side are fixedly connected with the same baffle 13.

[0029] In this embodiment, when the pressure is not too high, the flood discharge plate 6 opens and the pressure is released through the flood discharge port located between the connecting rods 12 , and the enlarged port 11 is located at the lower end in the height direction of the baffle 13 .

[0030] In a further preferred embodiment of the present invention, Figure 1 As shown, the height of the baffle 13 is half the height of the inner wall of the flood discharge top 1, and the three enlarged openings 11 are respectively located in the middle of the heights of the three baffles 13.

[0031] In this embodiment, when the pressure is too high, the flood discharge plate 6 opens, driving the connecting rod 12 and the baffle 13 to move open, thereby facilitating the opening of the enlarged port 11 .

[0032] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0033] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0034] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A safety pressure relief device for a power distribution cabinet, characterized in that: include: A flood discharge top (1), wherein the top of the flood discharge top (1) is fixedly connected to a top plate (4), and a flood discharge outlet is provided in the middle of the top plate (4); A rotating rod (5) is fixedly connected to one side wall of the flood discharge outlet, and a flood discharge plate (6) is rotatably connected to the other side of the rotating rod (5), and the side wall of the flood discharge plate (6) is in contact with the side wall of the flood discharge outlet; A plurality of springs (10) are provided between a side of the upper end of the top plate (4) close to the rotating rod (5) and the flood discharge plate (6).

2. A safety pressure relief device for a power distribution cabinet according to claim 1, characterized in that: A first connecting plate (7) is detachably and fixedly connected to one side of the upper end of the top plate (4) close to the rotating rod (5); A pressure plate (8) is fixedly connected to one side of the upper end of the flood discharge plate (6) close to the rotating rod (5); The pressure plate (8) is detachably and fixedly connected to a second connecting plate (9) on one side close to the first connecting plate (7), and the two sides of the plurality of springs (10) are respectively fixedly connected to the first connecting plate (7) and the second connecting plate (9).

3. A safety pressure relief device for a power distribution cabinet according to claim 2, characterized in that: The bottom of the flood discharge roof (1) is fixedly connected to a bottom plate (2), and a through hole (3) is provided in the middle of the bottom plate (2).

4. A safety pressure relief device for a power distribution cabinet according to claim 1, characterized in that: The front and rear ends and the lower right end of the flood discharge top (1) are provided with enlarged openings (11).

5. A safety pressure relief device for a power distribution cabinet according to claim 4, characterized in that: Connecting rods (12) are fixedly connected to the front and rear ends and the right end of the lower end of the flood discharge plate (6), and the same baffle (13) is fixedly connected between the lower ends of each two of the six connecting rods (12) close to one side.

6. A safety pressure relief device for a power distribution cabinet according to claim 5, characterized in that: The height of the baffle (13) is half the height of the inner wall of the flood discharge top (1), and the three enlarged openings (11) are respectively located at the middle position of the height of the three baffles (13).

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