Pressure relief device of high-voltage switch cabinet

Abstract

The utility model relates to the technical field of power equipment, in particular to a pressure relief device of a high-voltage switch cabinet, which comprises a pressure relief plate, connecting plates butted with the high-voltage switch cabinet are mounted on the periphery of the pressure relief plate, a plurality of uniformly distributed U-shaped baffles are mounted on the outer side surface of the pressure relief plate, air outlet holes are formed in the opposite side surfaces of the U-shaped baffles, and the air outlet holes are communicated with the air outlet holes. First pressure relief holes are formed in the positions, corresponding to the U-shaped baffles, of the pressure relief plate. Air waves in the high-voltage switch cabinet can be smoothly discharged upwards by utilizing the first pressure relief hole, so that the probability of explosion is reduced; meanwhile, due to the arrangement of the U-shaped baffle, the effect of guiding airflow to be exhausted upwards is achieved, the shielding effect is also achieved, dust is prevented from falling into the high-voltage switch cabinet in the normal use process, and a certain protection effect is achieved.

Description

Technical Field

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

[0002] High-voltage switchgear is a complete set of switchgear and control equipment. During normal operation, heat will be generated in each functional compartment due to the effects of loop resistance and current. In addition, during operation, arc faults may occur due to aging of circuit insulation, human error, overvoltage, etc., causing high-temperature and high-pressure gas to be generated in the cabinet, resulting in damage to the switchgear and possibly posing a threat to the safety of maintenance personnel.

[0003] A high-voltage switch cabinet pressure relief device and a high-voltage switch cabinet with application number CN202311557246.4 disclose a pressure relief box and a protective shell, wherein the pressure relief box comprises a first shell and a pressure relief cover, and the pressure relief cover is provided with a first mesh hole; a flat mesh plate, an arc baffle plate and a fan are sequentially provided in the first shell along the release direction of the gas. When an arcing fault occurs, the gas pressure is decomposed by the flat mesh plate, and the release direction of the gas pressure is changed by the arc baffle plate. In this process, the gas is extracted by the fan to speed up the gas passing through the flat mesh plate and the arc baffle plate, and then the pressure relief cover is pushed open and the gas is completely released; it discloses a structure in which a pressure relief box is arranged on the top of its switch cabinet. Although it can achieve the effect of pressure relief, its structure is complex and the cost is high, which is not conducive to large-scale promotion. Utility Model Content

[0004] The technical problem to be solved by the utility model is that during the pressure relief process of the existing high-voltage switch cabinet, the effect speed and efficiency are relatively slow.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] First, a high-voltage switch cabinet pressure relief device is provided, including a pressure relief plate, wherein the pressure relief plate is surrounded by connecting plates that are connected to the high-voltage switch cabinet, and the outer side of the pressure relief plate is installed with several evenly distributed U-shaped baffles, and the opposite sides of the U-shaped baffles are provided with air outlet holes, and the positions of the pressure relief plate corresponding to the U-shaped baffles are provided with first pressure relief holes.

[0007] Furthermore, both ends of the U-shaped baffle are provided with outward-turned mounting edges, and the mounting edges are detachably connected to the pressure relief plate; the U-shaped baffle is conveniently fixed to the pressure relief plate by utilizing the mounting edges.

[0008] Furthermore, the mounting edge and the U-shaped baffle are integrally formed; the integral forming allows the U-shaped plate to be punched out in one go, thereby reducing production costs.

[0009] Furthermore, the mounting edge is detachably connected to the pressure relief plate via bolts.

[0010] Furthermore, a convex arc block is installed on the inner side of the U-shaped baffle facing the first pressure relief hole; the arc block can buffer the pressure of the air wave impacting the U-shaped baffle, so that the air wave can be discharged smoothly.

[0011] Furthermore, the U-shaped baffles are arranged in parallel on the pressure relief plate.

[0012] Furthermore, several second pressure relief holes are provided on the pressure relief plate between the two U-shaped baffles and on the sides at both ends; the second pressure relief holes not only have the effect of pressure relief, but also can guide the air waves discharged from the air outlet to be discharged upward, so that the device can be used smoothly.

[0013] Furthermore, the distribution direction of the second pressure relief holes is consistent with the length direction of the U-shaped baffle.

[0014] Furthermore, a partition is provided on the pressure relief plate between the two U-shaped baffles, and inclined plates are provided at both opposite ends of the pressure relief plate. The extension direction of the inclined plate and the partition is consistent with the length direction of the U-shaped baffle; the partition can prevent the two relatively arranged air outlet holes from having a counter-effect, thereby improving the exhaust effect. The setting of the inclined plate can also prevent the air waves from being discharged in the horizontal direction, thereby reducing the impact on the surrounding equipment.

[0015] Furthermore, the side surface of the partition corresponding to the air outlet is a concave arc surface; the arc shape enables the air wave to be discharged upward more smoothly when it hits the partition, making the use effect of the device better.

[0016] The utility model has the following beneficial effects: the utility model utilizes the first pressure relief hole to enable the air waves in the high-voltage switch cabinet to be discharged upward smoothly, thereby reducing the probability of explosion; at the same time, the setting of the U-shaped baffle not only guides the air flow to be discharged upward, but also has a shielding effect, preventing dust from falling into the high-voltage switch cabinet during normal use, thereby achieving a certain protective effect; the setting of the partition plate and the second pressure relief hole also enables the air waves from the air outlet to be discharged upward smoothly, thereby making the use effect of the device better; the setting of the connecting plate also enables the device to be conveniently modified on the existing high-voltage switch cabinet, thereby reducing the modification cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 is a perspective view of this embodiment;

[0019] Figure 2 is a top view of this embodiment;

[0020] Figure 3 This is a working state diagram of the first embodiment;

[0021] Figure 4 This is a working state diagram of the second embodiment. DETAILED DESCRIPTION

[0022] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0023] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0026] The utility model provides a high-voltage switch cabinet pressure relief device, such as Figure 1 and Figure 2 As shown, it includes a pressure relief plate 1, connecting plates 2 are installed around the pressure relief plate 1, and several evenly distributed U-shaped baffles 4 are installed on the side of the pressure relief plate 1. The U-shaped baffles 4 are distributed in parallel, and a first pressure relief hole 5 is opened at the position of the pressure relief plate 1 corresponding to the U-shaped baffle 4, and an air outlet hole 6 is opened on the opposite side of the U-shaped baffle 4.

[0027] In this embodiment, several rivet holes 3 are provided on the connecting plate 2, and the pressure relief plate 1 is fixed to the top of the high-voltage switch cabinet through the rivet holes 3. When a high-pressure air wave is generated in the high-voltage switch cabinet, the air wave enters the U-shaped baffle 4 through the first pressure relief hole 5, and is then discharged to the outside through the air outlet 6, thereby preventing the risk of explosion of the high-voltage switch cabinet and improving the safety of the device.

[0028] Since the device can be installed on the high-voltage switch cabinet only by rivets, the existing high-voltage switch cabinet only needs to remove the top cover and then install the device, which is convenient for the modification of the existing high-voltage switch cabinet and reduces the modification cost.

[0029] Since the air outlet 6 is facing the horizontal direction, under normal working conditions, the pressure relief plate 1 is blocked by the U-shaped baffle 4 in the vertical direction, and no dust will enter the high-voltage switch cabinet through the first pressure relief hole 5, ensuring the cleanliness of the high-voltage switch cabinet and reducing the occurrence of accidents.

[0030] In this embodiment, both ends of the U-shaped baffle 4 are integrally formed with outward-turned mounting edges 7 , and the mounting edges 5 are detachably connected to the pressure relief plate 1 by bolts.

[0031] First embodiment

[0032] like Figure 2 and Figure 3 As shown, since the air outlet holes 6 of the two adjacent U-shaped baffles 4 are relatively arranged during the pressure relief process, after the air wave is discharged through the air outlet holes 6, an air flow collision will be formed, resulting in an obstruction to the pressure relief. In order to ensure that the air flow can move upward stably, a second pressure relief hole 11 is opened on the pressure relief plate 1 between the two U-shaped baffles 4 and on the side surfaces at both ends.

[0033] Since the airflow is discharged directly upward after passing through the second pressure relief hole 11, the gas discharged from the air outlet holes 6 on both sides can be guided to move upward, thereby ensuring smooth discharge of the airflow, and will not cause air waves to be discharged in the horizontal direction, reducing the impact on surrounding equipment, and making the device more stable and reliable to use.

[0034] Second embodiment

[0035] like Figure 4 As shown, since the air outlet holes 6 of the two adjacent U-shaped baffles 4 are relatively arranged during the pressure relief process, after the air wave is discharged through the air outlet holes 6, an air flow collision will be formed, resulting in an obstruction to the pressure relief. Therefore, a partition 8 is provided between the two adjacent U-shaped baffles 4 on the pressure relief plate 1. After the air wave is discharged from the air outlet holes 6, it will impact the partition 8. Under the action of the partition 8, the air wave will rush out upward, ensuring the smooth discharge of the air pressure.

[0036] In order to make the movement of the air waves more stable, the side surfaces of the partition 8 corresponding to the air outlet holes 6 are all set to be concave arc surfaces, guiding the air waves to hit the partition 8 and be discharged upward.

[0037] At the same time, in order to reduce the pressure of the air wave impacting the U-shaped baffle 4, the inner side of the U-shaped baffle 4 facing the first pressure relief hole 5 is provided with a convex arc block 9. When the air wave impacts the arc block 9, under the action of the arc surface, the air wave separates to both sides and is discharged from the air outlet 6. Then, it impacts the partition 8 and is discharged upward, ensuring that the air wave is smoothly discharged from the high-voltage switch cabinet.

[0038] In order to ensure that the airflow discharged from the air outlet holes 6 at both ends can also be discharged upward, symmetrically distributed inclined plates 10 are provided at the opposite ends of the pressure relief plate 1, and the derivative direction of the inclined plates 10 is consistent with the extension direction of the U-shaped baffle 4.

[0039] After the airflow from the air outlet holes 6 at both ends rushes out, it will impact the inclined plate 10. Under the action of the inclined plate 10, the airflow will move upward, reducing the impact of the airflow on the surrounding equipment after rushing out, making the device safer and more reliable to use, and preventing dust from entering the pressure relief plate 1 in the vertical direction, ensuring the cleanliness of the high-voltage switch cabinet, and making the device more effective.

[0040] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-voltage switchgear pressure relief device, characterized in that: The invention comprises a pressure relief plate (1), wherein the pressure relief plate (1) is provided with connection plates (2) connected to a high-voltage switch cabinet, and the outer side of the pressure relief plate (1) is provided with a plurality of evenly distributed U-shaped baffles (4). The opposite sides of the U-shaped baffles (4) are provided with air outlet holes (6), and the positions of the pressure relief plate (1) corresponding to the U-shaped baffles (4) are provided with first pressure relief holes (5).

2. A high-voltage switch cabinet pressure relief device according to claim 1, characterized in that: Both ends of the U-shaped baffle (4) are provided with outward-turned mounting edges (7), and the mounting edges (7) are detachably connected to the pressure relief plate (1).

3. A high-voltage switch cabinet pressure relief device according to claim 2, characterized in that: The mounting edge (7) and the U-shaped baffle (4) are integrally formed.

4. A high-voltage switch cabinet pressure relief device according to claim 2, characterized in that: The mounting edge (7) is detachably connected to the pressure relief plate (1) via bolts.

5. A high-voltage switch cabinet pressure relief device according to claim 1, characterized in that: An outwardly convex arc block (9) is installed on the inner side surface of the U-shaped baffle (4) facing the first pressure relief hole (5).

6. A high-voltage switch cabinet pressure relief device according to claim 1, characterized in that: The U-shaped baffles (4) are arranged in parallel on the pressure relief plate (1).

7. A high-voltage switch cabinet pressure relief device according to claim 6, characterized in that: The pressure relief plate (1) is provided with a plurality of second pressure relief holes (11) located between the two U-shaped baffles (4) and on the side surfaces at both ends.

8. A high-voltage switch cabinet pressure relief device according to claim 7, characterized in that: The distribution direction of the second pressure relief holes (11) is consistent with the length direction of the U-shaped baffle (4).

9. The high-voltage switch cabinet pressure relief device according to claim 6, characterized in that: A partition (8) is provided on the pressure relief plate (1) between the two U-shaped baffles (4), and inclined plates (10) are provided at opposite ends of the pressure relief plate (1). The extending direction of the inclined plates (10) and the partition (8) is consistent with the length direction of the U-shaped baffle (4).

10. A high-voltage switch cabinet pressure relief device according to claim 9, characterized in that: The side surface of the partition (8) corresponding to the air outlet (6) is a concave arc surface.

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