Pressure relief device of high-voltage switch cabinet

Abstract

The invention relates to the technical field of power equipment, in particular to a high-voltage switch cabinet pressure relief device which comprises a pressure relief plate, connecting plates in butt joint with a high-voltage switch cabinet are installed on the periphery of the pressure relief plate, rivet holes connected with the high-voltage switch cabinet are formed in the connecting plates, and a plurality of U-shaped baffles are evenly installed on the outer side face of the pressure relief plate. Air outlet holes are formed in the opposite side faces of the U-shaped baffle, and first pressure relief holes are formed in the positions, corresponding to the U-shaped baffle, 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 invention relates to the technical field of electric power equipment, and 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. When the high-voltage switchgear is operating normally, heat will be generated in each functional compartment due to the circuit resistance and current. In addition, during the operation of the high-voltage switchgear, arc faults may occur due to circuit insulation aging, human operating errors, overvoltage and other reasons, 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 arranged in the first shell along the release direction of the gas, and 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 speed of 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 the 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. Summary of the invention

[0004] The technical problem to be solved by the present invention is that during the pressure relief process of the existing high-voltage switch cabinet, the effect speed and efficiency are 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 connecting plates connected to the high-voltage switch cabinet are installed around the pressure relief plate, and rivet holes connected to the high-voltage switch cabinet are opened on the connecting plate, and a plurality of evenly distributed U-shaped baffles are installed on the outer side of the pressure relief plate, and air outlet holes are opened on the opposite sides of the U-shaped baffles, and first pressure relief holes are opened at the positions of the pressure relief plate corresponding to the U-shaped baffles.

[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 can be conveniently fixed on the pressure relief plate by utilizing the mounting edges.

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

[0009] Furthermore, the mounting edge is detachably connected to the pressure relief plate by 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, a plurality of 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 same pressure relief effect, 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 arranged on the pressure relief plate between the two U-shaped baffles, and inclined plates are arranged at opposite ends of the pressure relief plate, and 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 collision effect, thereby improving the exhaust effect, and 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 impacts the partition, so that the use effect of the device is better.

[0016] The present invention has the following beneficial effects: the present invention 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 airflow to be discharged upward, but also has a shielding effect, thereby 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 to 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0018] Figure 1 is a three-dimensional diagram of this embodiment;

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

[0020] Figure 3 It 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 modes 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 various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The present invention 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, a plurality of 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 then is 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 modifying the existing high-voltage switch cabinet and reduces the modification cost.

[0029] Since the air outlet 6 is facing horizontally, 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, thereby 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 plate 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, during the pressure relief process, the air outlet holes 6 of the two adjacent U-shaped baffles 4 are relatively arranged. After the air wave is discharged through the air outlet holes 6, air flow collision will be formed, resulting in obstruction of pressure relief. In order to ensure that the air flow can move upward stably, second pressure relief holes 11 are 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 directly discharged upward after being discharged 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 a horizontal direction, reducing the impact on surrounding equipment, making the device more stable and reliable to use.

[0034] Second embodiment

[0035] like Figure 4 As shown, during the pressure relief process, the air outlet holes 6 of the two adjacent U-shaped baffles 4 are arranged relatively to each other. After the air wave is discharged through the air outlet holes 6, air flow collision will be formed, resulting in obstruction of pressure relief. Therefore, a partition plate 8 is arranged 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 on the partition plate 8. Under the action of the partition plate 8, the air wave will rush upward to ensure smooth discharge of air pressure.

[0036] In order to make the movement of the air wave more stable, the side surfaces of the partition plate 8 corresponding to the air outlet holes 6 are all set to be concave arc surfaces, so as to guide the air wave to hit the partition plate 8 and then 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 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, making the device more effective.

[0040] It should be understood that the above description of the specific embodiments of the present invention is only for illustrating the technical route and features of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, but the present invention is not limited to the above specific implementation methods. Any changes or modifications made within the scope of the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-voltage switch cabinet pressure relief device, characterized in that: The invention comprises a pressure relief plate (1), wherein connecting plates (2) connected to a high-voltage switch cabinet are installed around the pressure relief plate (1), and rivet holes (3) connected to the high-voltage switch cabinet are provided on the connecting plate (2), and a plurality of evenly distributed U-shaped baffles (4) are installed on the outer side of the pressure relief plate (1), and air outlet holes (6) are provided on the opposite sides of the U-shaped baffles (4), and first pressure relief holes (5) are provided at positions corresponding to the U-shaped baffles (4) on the pressure relief plate (1).

2. A high-voltage switch cabinet pressure relief device according to claim 1, characterized in that: Both ends of the U-shaped baffle plate (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. A high-voltage switch cabinet pressure relief device according to claim 6, characterized in that: A partition plate (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), and the extending direction of the inclined plates (10) and the partition plate (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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