Inflatable cabinet pressure relief channel, inflatable cabinet and inflatable cabinet assembly

Abstract

The present invention provides an inflatable cabinet pressure relief channel, an inflatable cabinet and an inflatable cabinet group, wherein the inflatable cabinet pressure relief channel includes: a top pressure relief air channel, which is a sealed first horizontal cavity, and a top pressure relief valve is arranged in the first horizontal cavity; a side pressure relief air channel, which is a sealed vertical cavity, and a side pressure relief valve is arranged in the vertical cavity, and a plurality of first pressure relief ports are arranged on the side of the vertical cavity; a bottom pressure relief air channel, which is a sealed second horizontal cavity, and a second pressure relief port is arranged at the bottom of the second horizontal cavity; the first horizontal cavity, the vertical cavity and the second horizontal cavity are connected in sequence from top to bottom to form the inflatable cabinet pressure relief channel; the inflatable cabinet pressure relief channel can not only quickly and effectively leak out the pressure in the inflatable cabinet, but also reduce the safety hazards to electrical equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of switchgear, and in particular relates to a gas cabinet pressure relief channel, a gas cabinet and a gas cabinet group. Background Art

[0002] In recent years, gas-insulated switchgear (GIS) has been rapidly adopted and applied in my country. Due to the limitations of traditional GIS (such as high altitude, humidity, salt spray, contamination, and corrosion), it no longer meets the requirements of users in the metallurgical, petrochemical, mining, and coastal regions. For 35kV voltage-rated products, urban subways and light rail, high-rise buildings, and large enterprises are increasingly adopting 35kV gas-insulated switchgear due to floor space and other factors. However, the gas pressure in 35kV gas-insulated switchgear is relatively high, and consideration must be given to its pressure relief method, which is crucial for the safe operation of the equipment.

[0003] During operation, the inflatable cabinet may suffer a short circuit failure due to short circuit, insulation aging or human error. Under the short circuit current of tens of thousands of amperes, high-temperature and high-pressure gas will be instantly generated in the cabinet. If the high-temperature and high-pressure gas cannot be effectively released in a very short time in the narrow cabinet, it will cause the inflatable cabinet to explode and the adjacent inflatable cabinets to be damaged, and there may be danger to personal safety. Therefore, the inflatable cabinet needs effective pressure relief measures to discharge the high-temperature and high-pressure gas accumulated in the cabinet.

[0004] Traditional pressure relief methods are mostly to directly relieve pressure through the pressure relief port corresponding to the air chamber, which will cause certain safety hazards during the actual operation of the power equipment; or to relieve pressure through a single channel, which cannot quickly relieve pressure, resulting in low safety performance of the entire device.

[0005] Therefore, there is an urgent need for a gas cabinet pressure relief channel and a gas cabinet that can quickly and effectively release the pressure in the gas cabinet and reduce potential safety hazards to electrical equipment. Summary of the Invention

[0006] In order to solve the above problems, the present invention provides a gas cabinet pressure relief channel, a gas cabinet and a gas cabinet group, which can not only quickly and effectively leak out the pressure in the gas cabinet, but also reduce the safety hazards to power equipment.

[0007] In order to achieve the above-mentioned object, the present invention provides a pressure relief channel of an inflatable cabinet, comprising:

[0008] A top pressure relief airway, the top pressure relief airway being a sealed first horizontal cavity, wherein a top pressure relief valve is provided in the first horizontal cavity;

[0009] A side pressure relief airway, which is a sealed vertical cavity with a side pressure relief valve disposed therein and a plurality of first pressure relief ports disposed on the side of the vertical cavity;

[0010] A bottom pressure relief airway, the bottom pressure relief airway being a sealed second horizontal cavity, the bottom of the second horizontal cavity being provided with a second pressure relief port;

[0011] The first horizontal cavity, the vertical cavity and the second horizontal cavity are connected in sequence from top to bottom to form a pressure relief channel of the inflatable cabinet.

[0012] As a further improvement of the above solution, at least one side surface of the vertical cavity is provided with a plurality of first pressure relief ports.

[0013] As a further improvement of the above solution, two opposite side surfaces of the vertical cavity are provided with a plurality of first pressure relief ports.

[0014] As a further improvement of the above solution, the plurality of first pressure relief ports are arranged at intervals from top to bottom.

[0015] As a further improvement of the above solution, the top pressure relief valve is arranged on the bottom surface of the first horizontal cavity, and its exhaust port faces the interior of the first horizontal cavity.

[0016] As a further improvement of the above solution, the side pressure relief valve is arranged on the side of the vertical cavity where the first pressure relief port is not arranged, and its exhaust port faces the interior of the vertical cavity.

[0017] As a further improvement of the above solution, the first horizontal cavity, the vertical cavity and the second horizontal cavity are all rectangular cavities, and the three rectangular cavities are connected end to end in sequence to assemble a C-shaped connecting cavity, and seals are provided at the connections.

[0018] As a further improvement of the above solution, an explosion-proof valve is further provided at the second pressure relief port.

[0019] The present invention also provides an inflatable cabinet, comprising an upper air box, a lower air box and the above-mentioned inflatable cabinet pressure relief channel, wherein the upper air box is arranged below the top pressure relief channel, and the top pressure relief valve is connected to the upper air box; the lower air box is arranged between the upper air box and the bottom pressure relief channel, and is adjacent to the side pressure relief channel, and the side pressure relief valve is connected to the lower air box.

[0020] As a further improvement of the above solution, sealing members are provided at the connections between the upper air box, the lower air box and the pressure relief channel of the inflatable cabinet.

[0021] The present invention also provides an inflatable cabinet group, including the above-mentioned several inflatable cabinets, wherein the several inflatable cabinets are arranged side by side in sequence, and the first pressure relief ports of adjacent inflatable cabinets are connected to each other, and the connecting points of the first pressure relief ports of the adjacent inflatable cabinets are all provided with sealing members.

[0022] Since the present invention adopts the above technical solution, the beneficial effects of this application are:

[0023] 1. The present invention provides an inflatable cabinet pressure relief channel, comprising: a top pressure relief air channel, the top pressure relief air channel being a sealed first horizontal cavity, wherein a top pressure relief valve is provided in the first horizontal cavity;

[0024] A side pressure relief airway, which is a sealed vertical cavity with a side pressure relief valve disposed therein and a plurality of first pressure relief ports disposed on the side of the vertical cavity;

[0025] The bottom pressure relief air duct is a sealed second horizontal cavity, and a second pressure relief port is provided at the bottom of the second horizontal cavity; the first horizontal cavity, the vertical cavity and the second horizontal cavity are sequentially connected from top to bottom to form an inflatable cabinet pressure relief channel. The inflatable cabinet pressure relief channel of the present invention is provided with two pressure relief ports, the first one is arranged on the side of the side pressure relief channel, and has several first pressure relief ports, and the second one is arranged on the bottom surface of the bottom pressure relief channel. Such an arrangement enables the inflatable cabinet pressure relief channel to have multiple pressure relief ports, so that the pressure in the inflatable cabinet can be released from multiple directions, achieving the purpose of rapid pressure relief and reducing the accident risk of the equipment; in addition, the present invention arranges the pressure relief ports on the side and bottom, compared with the traditional arrangement of setting the pressure relief ports on the top of the inflatable cabinet, the impact of the released pressure gas on the roof where the equipment is placed is avoided; in addition, due to the first horizontal cavity, the vertical cavity and the second water cavity, the pressure relief ports are provided on the side and bottom surfaces, which is different from the traditional arrangement of setting the pressure relief ports on the top of the inflatable cabinet, thereby avoiding the impact of the released pressure gas on the roof where the equipment is placed; in addition, due to the first horizontal cavity, the vertical cavity and the second water cavity, the pressure relief ports are provided on the side and bottom surfaces, which is different from the traditional arrangement of setting the pressure relief ports on the top of the inflatable cabinet, thereby avoiding the impact of the released pressure gas on the roof where the equipment is placed. The flat cavities are connected from top to bottom in sequence to form the pressure relief channel of the inflatable cabinet, and the top pressure relief valve is arranged in the top pressure relief channel. The pressurized gas discharged from the top pressure relief valve moves horizontally in the first horizontal cavity and then enters the vertical cavity. At this time, the pressurized gas has been buffered, and the impact force of the pressurized gas after buffering is greatly reduced. Then, part of it moves downward and is discharged through several first pressure relief ports, and another part continues to move downward and flows into the second horizontal cavity and is discharged through the second pressure relief port; the pressurized gas discharged from the side pressure relief valve moves in the vertical cavity and then part of it is discharged through several first pressure relief ports, and another part continues to move downward and flows into the second horizontal cavity and is discharged through the second pressure relief port. Therefore, no matter whether the pressurized gas discharged from the top pressure relief valve or the side pressure relief valve is discharged after being buffered, the impact force is greatly reduced, which also means that the impact of the pressurized gas on the surrounding environment is reduced when it is discharged.

[0026] 2. The present invention provides an inflatable cabinet, comprising an upper air box, a lower air box and the above-mentioned inflatable cabinet pressure relief channel, wherein the upper air box is arranged below the top pressure relief channel, and the top pressure relief valve is connected to the upper air box; the lower air box is arranged between the upper air box and the bottom pressure relief channel, and is adjacent to the side pressure relief channel, and the side pressure relief valve is connected to the lower air box. Such an arrangement provides the inflatable cabinet with multiple pressure relief ports, which is convenient for the rapid discharge of pressure from the inflatable cabinet. At the same time, the arrangement of the top pressure relief channel, the side wall pressure relief channel and the bottom pressure relief channel covers the upper air box and the lower air box. Although the overall volume is increased, the thickness of the inflatable cabinet is not increased. Therefore, within a certain space, the total number of inflatable cabinets placed will not be reduced.

[0027] 3. The present invention provides an inflatable cabinet group, comprising the above-mentioned several inflatable cabinets, wherein the several inflatable cabinets are arranged side by side in sequence, and the first pressure relief ports of adjacent inflatable cabinets are connected to each other. The connection points of the first pressure relief ports of the adjacent inflatable cabinets are all provided with sealing members. Such an arrangement connects the pressure relief cavities between each inflatable cabinet, so that the released pressure gas in a single inflatable cabinet is buffered again, while the pressure relief space is increased, and the pressure relief can be performed more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0029] Figure 1 This is a schematic diagram of a main view of a pressure relief channel of an inflatable cabinet according to embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic cross-sectional view of a pressure relief channel of an inflatable cabinet according to embodiment 1 of the present invention;

[0031] Figure 3 This is a three-dimensional schematic diagram of a pressure relief channel of an inflatable cabinet according to embodiment 1 of the present invention;

[0032] Figure 4 This is a schematic diagram of the main view of a pressure relief channel of an inflatable cabinet according to Comparative Example 2 of the present invention;

[0033] Figure 5 This is a three-dimensional schematic diagram of a pressure relief channel of an inflatable cabinet according to Comparative Example 2 of the present invention;

[0034] Figure 6 is a three-dimensional schematic diagram of the inflatable cabinet of the present invention;

[0035] The reference numerals are as follows:

[0036] 1. Inflatable cabinet pressure relief channel; 11. Top pressure relief airway; 111. Top pressure relief valve; 12. Side pressure relief airway; 121. Side pressure relief valve; 122. First pressure relief port; 13. Bottom pressure relief airway; 131. Second pressure relief port;

[0037] 2. Upper air box; 3. Lower air box; 4. Top pressure relief port. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] It should be noted that all directional indications in the embodiments of the present invention, such as first, second, up, down, left, right, front, back, etc., are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] The present invention will be further described below with reference to the accompanying drawings:

[0042] Example 1:

[0043] Reference Figure 1-Figure 3 The present invention provides a pressure relief channel for an inflatable cabinet, comprising:

[0044] A top pressure relief airway 11, which is a sealed first horizontal cavity, and a top pressure relief valve 111 is provided in the first horizontal cavity;

[0045] The side pressure relief airway 12 is a sealed vertical cavity, in which a side pressure relief valve 121 is provided, and a plurality of first pressure relief ports 122 are provided on the side of the vertical cavity;

[0046] The bottom pressure relief airway 13 is a sealed second horizontal cavity, and a second pressure relief port 131 is provided at the bottom of the second horizontal cavity;

[0047] The first horizontal cavity, the vertical cavity and the second horizontal cavity are connected in sequence from top to bottom to form the inflatable cabinet pressure relief channel 1; the inflatable cabinet pressure relief channel 1 of the present invention is provided with two pressure relief ports, the first one is arranged on the side of the side pressure relief channel, and has a plurality of first pressure relief ports 122, and the second one is arranged on the bottom surface of the bottom pressure relief channel. Such an arrangement enables the inflatable cabinet pressure relief channel 1 to have multiple pressure relief ports, so that the pressure in the inflatable cabinet can be released from multiple directions, achieving the purpose of rapid pressure relief and reducing the accident risk of the equipment; in addition, the present invention arranges the pressure relief ports on the side and bottom, compared with the traditional arrangement of arranging the pressure relief ports on the top of the inflatable cabinet, avoiding the impact of the released pressure gas on the roof where the equipment is placed; in addition, since the first horizontal cavity, the vertical cavity and the second horizontal cavity are connected in sequence from top to bottom to form the inflatable cabinet pressure relief channel 1, and the top pressure relief valve 111 is arranged In the top pressure relief channel, the pressurized gas discharged from the top pressure relief valve 111 moves horizontally in the first horizontal cavity and then enters the vertical cavity. At this time, the pressurized gas has been buffered, and the impact force of the buffered pressurized gas is greatly reduced. Then it moves downward, and part of it is discharged through several first pressure relief ports 122, and another part continues to move downward and flows into the second horizontal cavity and is discharged through the second pressure relief port 131; the pressurized gas discharged from the side pressure relief valve 121 moves in the vertical cavity, and part of it is discharged through several first pressure relief ports 122, and another part continues to move downward and flows into the second horizontal cavity and is discharged through the second pressure relief port 131. Therefore, no matter whether the pressurized gas discharged from the top pressure relief valve 111 or the side pressure relief valve 121 is discharged after being buffered, the impact force is greatly reduced, which also means that the impact of the pressurized gas on the surrounding environment is reduced when it is discharged.

[0048] As a preferred embodiment, at least one side of the vertical cavity is provided with a plurality of first pressure relief ports 122. When only one inflatable cabinet is needed for independent use, it is only necessary to set a plurality of pressure relief ports on one side of the vertical cavity. For example, in the present embodiment, six first pressure relief ports 122 are provided, and the six pressure relief ports are arranged at intervals from top to bottom, providing multiple directions for pressure relief and facilitating rapid pressure relief. When multiple inflatable cabinets need to be arranged side by side for use, it is necessary to set a plurality of first pressure relief ports 122 on both opposite sides of the vertical cavity to facilitate the connection of the pressure relief channels between adjacent inflatable cabinets.

[0049] As a preferred embodiment, the plurality of first pressure relief ports 122 are arranged at intervals from top to bottom. For details, refer to Figure 1The pressure gas flows in the pressure relief channel, and several first pressure relief ports 122 are provided on the vertical flow path of the pressure gas, which can quickly relieve the pressure while buffering the pressure gas; the pressure gas discharged from the top pressure relief valve 111 flows in the first horizontal cavity along the arrow a, and then reaches the vertical cavity, with a part of it being discharged from different first pressure relief ports 122, and a part of it reaching the second horizontal cavity and being discharged from the second pressure relief port 131; the pressure gas discharged from the side pressure relief valve 121 flows in the vertical cavity along the arrow b, with a part of it being discharged from different first pressure relief ports 122, and a part of it reaching the second horizontal cavity and being discharged from the second pressure relief port 131.

[0050] As a preferred embodiment, the top pressure relief valve 111 is arranged on the bottom surface of the first horizontal cavity, and its exhaust port faces the interior of the first horizontal cavity.

[0051] As a preferred embodiment, the side pressure relief valve 121 is provided on the side of the vertical cavity where the first pressure relief port 122 is not provided, and its exhaust port faces the interior of the vertical cavity.

[0052] As a preferred embodiment, the first horizontal cavity, the vertical cavity and the second horizontal cavity are all rectangular cavities, and the three rectangular cavities are sequentially connected end to end to assemble a C-shaped connecting cavity, and sealing members are provided at the connections.

[0053] As a preferred embodiment, an explosion-proof valve is further provided at the second pressure relief port 131 to prevent the explosion of the inflatable cabinet due to excessive pressure in the pressure relief channel, thereby further ensuring the safety of the inflatable cabinet.

[0054] Comparative Example 2:

[0055] Reference Figure 4 and Figure 5 , an inflatable cabinet pressure relief channel 1, comprising:

[0056] A top pressure relief airway 11, which is a sealed first horizontal cavity, with a top pressure relief valve 111 provided at the bottom and a top pressure relief port 4 provided at the top;

[0057] A side pressure relief airway 12, which is a sealed vertical cavity, and a side pressure relief valve 121 is provided in the vertical cavity;

[0058] The bottom pressure relief airway 13 is a sealed second horizontal cavity, and a second pressure relief port 131 is provided at the bottom of the second horizontal cavity;

[0059] The first horizontal cavity, the vertical cavity and the second horizontal cavity are connected in sequence from top to bottom to form the inflatable cabinet pressure relief channel 1. With this arrangement, the pressurized gas discharged through the top pressure relief valve 111 directly rushes out from the top pressure relief port 4. Usually, the height of the inflatable cabinet is about 2.8 meters. Therefore, the pressurized gas is directly discharged from the top pressure relief port 4, and the impact force it carries will bring impact force to the roof of the room where the inflatable cabinet is placed. In addition, although the side pressure relief valve 121 is buffered after passing through the vertical cavity, it is far away from both the top pressure relief port 4 and the second pressure relief port 131 at the bottom, so the pressure therein cannot be discharged in time, which makes the inflatable cabinet have unpredictable risks.

[0060] Example 3:

[0061] Reference Figure 6 The present invention also provides an inflatable cabinet, comprising an upper air box 2, a lower air box 3 and the above-mentioned inflatable cabinet pressure relief channel 1, the upper air box 2 is arranged below the top pressure relief channel, and the top pressure relief valve 111 is connected to the upper air box 2; the lower air box 3 is arranged between the upper air box 2 and the bottom pressure relief channel, and is adjacent to the side pressure relief channel, and the side pressure relief valve 121 is connected to the lower air box 3. Such an arrangement provides the inflatable cabinet with multiple pressure relief ports, which is convenient for the rapid discharge of the pressure of the inflatable cabinet. At the same time, the arrangement of the top pressure relief channel, the side wall pressure relief channel and the bottom pressure relief channel covers the upper air box 2 and the lower air box 3. Although the overall volume is increased, the thickness of the inflatable cabinet will not be increased. Therefore, within a certain space, the total number of inflatable cabinets placed will not be reduced.

[0062] As a preferred embodiment, sealing members are provided at the connections between the upper air box 2, the lower air box 3 and the pressure relief channel 1 of the inflatable cabinet.

[0063] Example 4:

[0064] The present invention also provides an inflatable cabinet group, including the above-mentioned several inflatable cabinets, wherein the several inflatable cabinets are arranged side by side in sequence, and the first pressure relief ports 122 of adjacent inflatable cabinets are connected to each other, and the connection points of the first pressure relief ports 122 of the adjacent inflatable cabinets are all provided with seals. Such an arrangement connects the pressure relief cavities between each inflatable cabinet, so that the released pressure gas in a single inflatable cabinet is buffered again, while the pressure relief space is increased, and the pressure relief can be performed more efficiently.

[0065] The above is a detailed introduction to the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A pressure relief channel for an inflatable cabinet, characterized in that: include: A top pressure relief airway, the top pressure relief airway being a sealed first horizontal cavity, wherein a top pressure relief valve is provided in the first horizontal cavity; A side pressure relief air duct, the side pressure relief air duct being a sealed vertical cavity, a side pressure relief valve being provided in the vertical cavity, and a plurality of first pressure relief ports being provided on the side of the vertical cavity; at least one side of the vertical cavity being provided with a plurality of first pressure relief ports; the plurality of first pressure relief ports being arranged at intervals from top to bottom; A bottom pressure relief airway, the bottom pressure relief airway being a sealed second horizontal cavity, the bottom of the second horizontal cavity being provided with a second pressure relief port; The first horizontal cavity, the vertical cavity and the second horizontal cavity are connected in sequence from top to bottom to form a pressure relief channel of the inflatable cabinet; the first horizontal cavity, the vertical cavity and the second horizontal cavity are all rectangular cavities, and the three rectangular cavities are connected end to end in sequence to assemble a C-shaped connecting cavity, and seals are provided at the connections.

2. The pressure relief channel of the inflatable cabinet according to claim 1, characterized in that: Two opposite side surfaces of the vertical cavity are each provided with a plurality of first pressure relief ports.

3. The pressure relief channel of the inflatable cabinet according to any one of claims 1-2, characterized in that: An explosion-proof valve is also provided at the second pressure relief port.

4. An inflatable cabinet, characterized in that: It includes an upper air box, a lower air box and an inflatable cabinet pressure relief channel as described in any one of claims 1 to 3, wherein the upper air box is arranged below the top pressure relief air duct, and the top pressure relief valve is connected to the upper air box; the lower air box is arranged between the upper air box and the bottom pressure relief air duct and is adjacent to the side pressure relief air duct, and the side pressure relief valve is connected to the lower air box.

5. The inflatable cabinet according to claim 4, characterized in that: Sealing elements are provided at the connections between the upper air box, the lower air box and the pressure relief channel of the inflatable cabinet.

6. An inflatable cabinet set, characterized in that: It comprises several inflatable cabinets as described in claim 4 or 5, wherein the several inflatable cabinets are arranged side by side in sequence, and the first pressure relief ports of adjacent inflatable cabinets are connected to each other, and the connecting points of the first pressure relief ports of the adjacent inflatable cabinets are all provided with sealing members.

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