Low-voltage cabinet with pressure relief function

Abstract

The utility model discloses a low-voltage cabinet with a pressure relief function, and the cabinet comprises a cabinet body which is used for accommodating electrical elements; the pressure relief assembly is rotationally connected with the cabinet body around a first axis; wherein the cabinet body comprises a plurality of cabinet walls and a cabinet door; the cabinet walls are fixedly connected; the cabinet door and the cabinet wall form rotary connection around a second axis; the cabinet door is arranged on the front side of the cabinet body; a pressure relief opening is formed in the top of the cabinet body; the pressure relief assembly is arranged at the top of the cabinet body to seal the pressure relief opening; the pressure relief assembly comprises a plurality of pressure relief inner plates and a pressure relief shell cover, and the pressure relief inner plates are in sliding connection with the pressure relief shell cover. The low-voltage cabinet with the pressure relief function has the beneficial effects that the pressure relief function is considered, and meanwhile, the safety of surrounding personnel during pressure relief can be ensured.

Description

Technical Field

[0001] The utility model relates to a low-voltage cabinet with a pressure relief function, belonging to the technical field of electrical equipment. Background Art

[0002] When a serious short-circuit fault occurs in the live conductor inside the low-voltage cabinet, a huge impact air flow will be generated inside the low-voltage cabinet. If there is no safe and reliable pressure relief channel, the impact air flow will not be released, directly damaging components such as the door panel of the low-voltage cabinet. In severe cases, the door panel may even be blown off, endangering personal safety.

[0003] In the related art, pressure relief devices are provided for the low-voltage cabinet, but most of these pressure relief devices only consider the rapid response during pressure relief and do not consider the safety of surrounding personnel during pressure relief. Summary of the Utility Model

[0004] The utility model provides a low-voltage cabinet with a pressure relief function to improve the safety of the low-voltage cabinet.

[0005] A low-voltage cabinet with a pressure relief function of the utility model includes: a cabinet body for accommodating electrical components; a pressure relief assembly rotatably connected to the cabinet body around a first axis; wherein, the cabinet body includes a plurality of cabinet walls and a cabinet door; the cabinet walls are fixedly connected to each other; the cabinet door is rotatably connected to the cabinet walls around a second axis; the cabinet door is arranged on the front side of the cabinet body; a pressure relief opening is arranged at the top of the cabinet body; the pressure relief assembly is arranged at the top of the cabinet body to close the pressure relief opening; the pressure relief assembly includes a plurality of pressure relief inner plates and a pressure relief shell cover, and the pressure relief inner plates are slidably connected to the pressure relief shell cover.

[0006] Optionally, in some embodiments, the first axis and the second axis are perpendicular to each other.

[0007] Optionally, in some embodiments, the first axis is parallel to the horizontal direction; the second axis is perpendicular to the horizontal direction.

[0008] Optionally, in some embodiments, the pressure relief shell cover is rotatably connected to the cabinet wall located at the rear side of the cabinet body.

[0009] Optionally, in some embodiments, the front end of the pressure relief shell cover overlaps on the top of the cabinet wall located at the rear side of the cabinet body.

[0010] Optionally, in some embodiments, a plurality of guiding card slots are formed inside the left and right sides of the pressure relief shell cover; the pressure relief inner plates are inserted into the guiding card slots; a card slot outlet for sliding the pressure relief inner plates out is arranged at the front side of the guiding slot opening of the pressure relief shell cover.

[0011] Optionally, in some embodiments, several of the pressure relief inner plates are arranged in parallel with each other.

[0012] Optionally, in some embodiments, a force-bearing structure is provided at the bottom of the pressure relief inner plate.

[0013] Optionally, in some embodiments, the force-bearing structure is configured as several protrusions.

[0014] Optionally, in some embodiments, the force-bearing structure is configured as several grooves.

[0015] The beneficial effect of the present utility model lies in: providing a low-voltage cabinet with a pressure relief function that takes into account the pressure relief function while ensuring the safety of surrounding personnel during pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a low-voltage cabinet with a pressure relief function in its normal state according to an embodiment of the present utility model.

[0017] Figure 2 is a schematic structural diagram of a low-voltage cabinet with a pressure relief function at the start of pressure relief according to an embodiment of the present utility model.

[0018] Figure 3 is a schematic partial structural diagram of a low-voltage cabinet with a pressure relief function according to an embodiment of the present utility model.

[0019] Figure 4 is a schematic structural diagram of a pressure relief housing cover according to an embodiment of the present utility model.

[0020] Figure 5 is a schematic structural diagram of a pressure relief housing cover and a pressure relief inner plate according to an embodiment of the present utility model.

[0021] Figure 6 is a schematic cross-sectional structural diagram of a pressure relief inner plate according to an embodiment of the present utility model.

[0022] Figure 7 is a schematic cross-sectional structural diagram of a pressure relief inner plate according to another embodiment of the present utility model.

[0023] The meanings of the reference numerals in the drawings:

[0024] 100, low-voltage cabinet; 100a, first axis; 100b, second axis; 110, cabinet body; 110a, pressure relief opening; 111, cabinet wall; 112, cabinet door; 120, pressure relief assembly; 121, pressure relief inner plate; 122, pressure relief housing cover; 121a, force-bearing structure; H, sliding direction; D, force-bearing direction; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0026] Refer to Figures 1 to 7 As shown, the low-voltage cabinet 100 with a pressure relief function of the present utility model includes: a cabinet body 110 and a pressure relief component 120.

[0027] Among them, the cabinet body 110 is used to accommodate electrical components; that is, the cabinet body 110 forms an internal space. The pressure relief component 120 is rotationally connected to the cabinet body 110 around a first axis 100a. The cabinet body 110 includes a plurality of cabinet walls 111 and a cabinet door 112; the cabinet walls 111 are fixedly connected to each other; the cabinet door 112 is rotationally connected to the cabinet walls 111 around a second axis 100b; the cabinet door 112 is provided on the front side of the cabinet body 110; a pressure relief opening 110a is provided at the top of the cabinet body 110; the pressure relief component 120 is provided at the top of the cabinet body 110 to close the pressure relief opening 110a. That is, the cabinet body 110 is provided with two external channels, one is closed by the cabinet door 112 for normal opening, such as for maintenance, etc., so the cabinet door 112 generally has a door lock, and the other is closed by the pressure relief component 120. At the time of leaving the factory, the gap between the pressure relief component 120 and the cabinet body 110 is filled with sealant to achieve their fitting. As a preferred solution, the sealant here can be photo-curing glue, that is, ultraviolet irradiation is carried out before leaving the factory to achieve curing and sealing.

[0028] Specifically, the pressure relief component 120 includes a plurality of pressure relief inner plates 121 and a pressure relief shell cover 122, and the pressure relief inner plates 121 are slidably connected to the pressure relief shell cover 122.

[0029] In this way, when a situation where pressure relief is required occurs, since the cabinet door 112 is locked, relatively speaking, for the closure of the pressure relief opening 110a, the pressure relief component 120 and the cabinet body 110 are connected together by glue. At this time, the pressure relief force is sufficient to break the bonding force provided by the sealant, so that the pressure relief component 120 flips upward, thereby opening the internal space of the cabinet for pressure relief. And after the pressure relief, due to gravity, the internal space of the cabinet is re-closed to prevent foreign objects from entering or internal combustion from causing damage to the outside.

[0030] Refer to Figure 1 and Figure 2 As shown, specifically, in some embodiments, the first axis 100a and the second axis 100b are perpendicularly arranged. The first axis 100a is parallel to the horizontal direction; the second axis is perpendicular to the horizontal direction. That is, the cabinet door 112 and the pressure relief component 120 open in different directions respectively.

[0031] Refer to Figure 1 and Figure 2As shown, specifically, in some embodiments, the pressure relief housing cover 122 is rotatably connected to the cabinet wall 111 located at the rear side of the cabinet body 110. The front end of the pressure relief housing cover 122 overlaps on the top of the cabinet wall 111 located at the rear side of the cabinet body 110. Although the probability of personnel appearing in front of the cabinet body 110 is greater, generally when the low-voltage cabinet 100 is arranged, its rear part is often blocked, which is likely to hinder pressure relief. And when pressure relief occurs, it is often a severe fault such as a short circuit. When personnel perform maintenance, they often operate with power off, so it is less likely to occur a fault that requires pressure relief. And at this time, the cabinet door 112 is open, and it may not necessarily require the pressure relief component 120 to open for pressure relief.

[0032] Referring to Figures 3 to 7 As shown, in order to better ensure safety, specifically, in some embodiments, a number of guiding card slots are formed inside the left and right sides of the pressure relief housing cover 122; the pressure relief inner plate 121 is inserted into the guiding card slots; a card slot outlet for sliding out the pressure relief inner plate 121 is provided at the front side of the pressure relief housing cover 122 for the guiding slot opening.

[0033] Among them, the pressure relief housing cover 122 can be made of metal materials, such as sheet metal materials, etc. The pressure relief inner plate 121 is made of plastic materials or foam materials. They are lighter in weight and are easy to slide out of the pressure relief housing cover 122 along with pressure relief, thereby relieving the pressure relief process. As a preferred solution, the pressure relief inner plate 121 is made of foam material. It can slide up and out during the pressure relief process, and at the same time, it breaks itself when the air pressure is relatively large, further releasing the energy of pressure relief.

[0034] Referring to Figures 3 to 7 As shown, specifically, in some embodiments, a number of the pressure relief inner plates 121 are arranged in parallel with each other. The multi-layer arrangement can effectively relieve the entire pressure relief process, and the parallel arrangement avoids the movement interference between the pressure relief inner plates 121.

[0035] Referring to Figure 6 and Figure 7 As shown, specifically, in some embodiments, a force-bearing structure 121a is provided at the bottom of the pressure relief inner plate 121. Specifically, in some embodiments, the force-bearing structure 121a is configured as a number of protrusions. And in some embodiments, the force-bearing structure 121a is configured as a number of grooves. At this time, the air pressure from the force-bearing direction D can better generate a sliding force for the pressure relief inner plate 121.

[0036] The above description is only some preferred embodiments of the present disclosure and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, a technical solution formed by mutually replacing the above features with technical features (but not limited to) having similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A low-voltage cabinet (100) with a pressure relief function, characterized in that: The low-voltage cabinet (100) includes a cabinet body (110) for accommodating electrical components; A pressure relief component (120) is rotationally connected to the cabinet body (110) around a first axis (100a); Among them, the cabinet body (110) includes a plurality of cabinet walls (111) and a cabinet door (112); the cabinet walls (111) are fixedly connected to each other; the cabinet door (112) is rotationally connected to the cabinet walls (111) around a second axis (100b); the cabinet door (112) is arranged on the front side of the cabinet body (110); a pressure relief opening (110a) is provided at the top of the cabinet body (110); the pressure relief component (120) is arranged at the top of the cabinet body (110) to close the pressure relief opening (110a); the pressure relief component (120) includes a plurality of pressure relief inner plates (121) and a pressure relief shell cover (122), and the pressure relief inner plates (121) are slidably connected to the pressure relief shell cover (122).

2. The low-voltage cabinet (100) with a pressure relief function according to claim 1, characterized in that: The first axis (100a) and the second axis (100b) are arranged perpendicular to each other.

3. The low-voltage cabinet (100) with a pressure relief function according to claim 2, characterized in that: The first axis (100a) is parallel to the horizontal direction; the second axis is perpendicular to the horizontal direction.

4. The low-voltage switchgear (100) with a pressure relief function according to claim 3, characterized in that: The pressure relief shell cover (122) is rotationally connected to the cabinet wall (111) located at the rear side of the cabinet body (110).

5. The low-voltage cabinet (100) with a pressure relief function according to claim 4, characterized in that: The front end of the pressure relief shell cover (122) overlaps on the top of the cabinet wall (111) located at the rear side of the cabinet body (110).

6. The low-voltage cabinet (100) with a pressure relief function according to any one of claims 1 to 5, characterized in that: A plurality of guiding card slots are formed inside the left and right sides of the pressure relief shell cover (122); the pressure relief inner plates (121) are inserted into the guiding card slots; a card slot outlet for sliding out the pressure relief inner plates (121) is provided at the front side of the pressure relief shell cover (122).

7. The low-voltage cabinet (100) with a pressure relief function according to claim 6, characterized in that: A plurality of the pressure relief inner plates (121) are arranged parallel to each other.

8. The low-voltage cabinet (100) with a pressure relief function according to claim 6, characterized in that: A force-bearing structure (121a) is provided at the bottom of the pressure relief inner plate (121).

9. The low-voltage cabinet (100) with a pressure relief function according to claim 8, characterized in that: The force-bearing structure (121a) is configured as a plurality of protrusions.

10. The low-voltage cabinet (100) with a pressure relief function according to claim 8, characterized in that: The force-bearing structure (121a) is configured as a plurality of grooves.

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