Pressure relief ventilation device for metal switch cabinet

Abstract

The utility model discloses a pressure-relief ventilation device for a metal switch cabinet, which is characterized by comprising a pressure-relief cover bottom plate provided with a plurality of ventilation hole structures; a sealing plate structure is arranged on the pressure relief cover bottom plate and comprises a first supporting arm and a second supporting arm, and the top of the first supporting arm and the top of the second supporting arm are connected through a supporting top plate; a screen plate structure is arranged in a space formed by the first supporting arm, the supporting top plate and the second supporting arm; one side of the pressure relief cover bottom plate is fixed at a cabinet top ventilation opening of the switchgear through a hinge structure, and the other side of the pressure relief cover bottom plate is fixed at the cabinet top ventilation opening of the switchgear through a nylon bolt. The device is wide in application range and simple in structure, the device can be modified without changing the original structure of the metal-enclosed switchgear, and the ventilation, heat dissipation and pressure relief capabilities of the metal-enclosed switchgear can be further improved through the installation of the device.

Description

Technical Field

[0001] The utility model relates to the field of electric power equipment, in particular to a pressure relief ventilation device for a metal switch cabinet. Background Art

[0002] In recent years, the domestic requirements for switch cabinet quality have become increasingly higher. In order to meet the latest domestic technical requirements, improve the temperature rise test capability of 1250A switch cabinet, and meet the enclosure protection level and dustproof function, it is necessary to innovate the design based on the original pressure relief cover. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the present utility model is to provide a pressure relief ventilation device for a metal switch cabinet. Figure 1 The original pressure relief cover structure shown is modified to further enhance the ventilation, heat dissipation, and pressure relief capabilities of the metal-enclosed switchgear.

[0004] A pressure relief ventilation device for a metal switch cabinet, comprising:

[0005] A pressure relief cover bottom plate, on which a plurality of ventilation hole structures are opened;

[0006] A sealing plate structure is arranged on the bottom plate of the pressure relief cover, and the sealing plate structure comprises a first supporting arm and a second supporting arm, and the tops of the first supporting arm and the second supporting arm are connected by a supporting top plate;

[0007] A mesh structure is provided in the space formed by the first support arm, the support top plate and the second support arm;

[0008] One side of the pressure relief cover bottom plate is fixed to the cabinet top vent of the switch device through a hinged structure, and the other side is fixed to the cabinet top vent of the switch device through a nylon bolt.

[0009] In a preferred embodiment of the present invention, the ventilation hole structure is a waist-shaped ventilation hole.

[0010] In a preferred embodiment of the present invention, the mesh structure is an iron mesh with a gap less than 1 mm.

[0011] In a preferred embodiment of the present invention, the hinge structure is a hinge.

[0012] In a preferred embodiment of the present invention, the mesh structure is fixed by a pressure strip.

[0013] The beneficial effects of the utility model are:

[0014] The utility model has a wide range of applications and a relatively simple structure. The device can be modified without changing the original structure of the metal-enclosed switchgear. Through the installation of the device, the ventilation, heat dissipation, and pressure relief capabilities of the metal-enclosed switchgear can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0016] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0017] Figure 3 The structure of the utility model is shown in FIG. Figure 3 .

[0018] Figure 4 The structure of the utility model is shown in FIG. Figure 4 . DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following structure, the description of the well-known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] like Figure 1 As shown, the existing pressure relief cover bottom plate 11 cannot meet the requirements of ventilation and dust prevention.

[0022] like Figure 2-3 The pressure relief ventilation device for a metal switch cabinet shown in the figure comprises a pressure relief cover bottom plate 3, on which a plurality of ventilation hole structures 31 are provided, and the ventilation hole structures 31 are waist-shaped ventilation holes.

[0023] This is to improve the heat dissipation capacity of the switch cabinet with a rated current of 1250a, and ventilation holes need to be opened.

[0024] A sealing plate structure 2 is arranged on the bottom plate 3 of the pressure relief cover, and the sealing plate structure 2 includes a first support arm 21 and a second support arm 22, and the tops of the first support arm 21 and the second support arm 22 are connected by a support top plate 23. A mesh plate structure 4 is arranged in the space formed by the first support arm 21, the support top plate 23 and the second support arm 22. The mesh plate structure 4 is an iron mesh plate with a gap of less than 1mm. To ensure the IP4X protection level and dustproof function of the switch cabinet. And it can dissipate heat smoothly, and the possibility of various dust accumulation on the surface above the new heat dissipation and pressure relief device is eliminated.

[0025] One side of the pressure relief cover bottom plate 3 is fixed to the cabinet top vent of the switch device through a hinge structure 1, and the other side is fixed to the cabinet top vent of the switch device through a nylon bolt 6. The hinge structure is a hinge.

[0026] The pressure relief cover bottom plate 3 is installed on the KYN28A cabinet top vent to extend the vent. A large number of vent holes 31 are opened on the pressure relief cover bottom plate 3. Figure 3 .

[0027] One end of the pressure relief cover bottom plate 3 is fixed to the top of the switch cabinet (not shown in the figure) by a hinge 1 and the other end is fixed by a nylon bolt 6.

[0028] During the arc burning experiment, the pressure in the ignition chamber can be better released from the pressure relief ventilation device of the present invention. The iron mesh plate 4 is installed on the pressure relief cover bottom plate 3 and fixed with the pressure strip 5 by bolts to play the role of ventilation and heat dissipation.

[0029] The sealing plate structure 22 is installed on the pressure relief cover bottom plate 3, surrounding the top of the ventilation hole of the pressure relief cover bottom plate 3, leaving only the heat dissipation channel behind the cabinet, playing a dust-proof role, and can play a certain role in preventing splashes during arc burning test.

[0030] To relieve pressure of the switchgear of the utility model, the bottom plate 3 of the improved pressure relief cover is hinged 1, and the other end is fixed to the top of the switch cabinet (not shown in the figure) with a nylon bolt 6.

[0031] When pressure is generated in the room, the nylon bolt 6 will be more easily opened, and the hinge 1 can buffer the impact force, so that the bottom plate 3 of the pressure relief cover can be opened smoothly, preventing the bottom plate 3 of the pressure relief cover from being blown away and injuring people.

[0032] Figure 2 This is a schematic diagram of the completed assembly of the utility model. The iron mesh plate 4 and the pressure strip 5 are fixed to the bottom plate 3 of the pressure relief cover by bolts, and the dust and fire retardant sealing plate 2 is fixed to the bottom plate 3 of the pressure relief cover by bolts, and they are assembled into a whole. This overall structural form can ensure that the entire pressure relief and heat dissipation device has good mechanical strength and will not be easily deformed due to certain external forces.

[0033] The positive improvement effect of the pressure relief ventilation and heat dissipation device for metal switch cabinet of the utility model is:

[0034] The utility model has a wide range of applications and a relatively simple structure. The device can be modified without changing the original structure of the metal-enclosed switchgear. Through the installation of the device, the ventilation, heat dissipation, and pressure relief capabilities of the metal-enclosed switchgear can be further improved.

Claims

1. A pressure relief ventilation device for a metal switch cabinet, characterized in that: include: A pressure relief cover bottom plate, on which a plurality of ventilation hole structures are opened; A sealing plate structure is arranged on the bottom plate of the pressure relief cover, and the sealing plate structure comprises a first supporting arm and a second supporting arm, and the tops of the first supporting arm and the second supporting arm are connected by a supporting top plate; A mesh structure is provided in the space formed by the first support arm, the support top plate and the second support arm; One side of the pressure relief cover bottom plate is fixed to the cabinet top vent of the switch device through a hinged structure, and the other side is fixed to the cabinet top vent of the switch device through a nylon bolt.

2. A pressure relief ventilation device for a metal switch cabinet according to claim 1, characterized in that: The ventilation hole structure is a waist-shaped ventilation hole.

3. A pressure relief ventilation device for a metal switch cabinet according to claim 1, characterized in that: The mesh plate structure is an iron mesh plate with a gap less than 1 mm.

4. A pressure relief ventilation device for a metal switch cabinet according to claim 1, characterized in that: The hinge structure is a hinge.

5. A pressure relief ventilation device for a metal switch cabinet according to claim 1, characterized in that: The mesh plate structure is fixed by means of pressure strips.

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