CN111431043A - Switch cabinet for arcing pressure relief - Google Patents

Abstract

The invention relates to the technical field of switch cabinet main bodies, in particular to a switch cabinet for arcing pressure relief, which comprises a pressure relief cabinet and at least one switch cabinet main body, wherein the pressure relief cabinet and the switch cabinet main body are arranged side by side; a pressure relief chamber is arranged in the switch cabinet main body, and a pressure relief opening communicated with the pressure relief chamber is arranged at the lower part of the side surface of the switch cabinet main body; the pressure relief cabinet comprises a cabinet body and a plurality of filtering components; the lower part of the side surface of the cabinet body is provided with a connecting port, and the top of the connecting port is provided with a discharge port for communicating the external environment; the cabinet body is internally provided with a pressure relief channel which bypasses the inner space of the cabinet body; two ends of the pressure relief channel are respectively communicated with the connecting port and the discharge port; the cabinet body is arranged at the side part of the switch cabinet main body, and the connecting port is communicated with the pressure relief chamber; a plurality of filter assemblies are arranged at intervals in the pressure relief channel. The fusant delivered by the pressure relief chamber is filtered by the filtering component and remains in the cabinet body, and further cannot be sprayed to people and articles below.

Description

Switch cabinet for arcing pressure relief

Technical Field

The invention relates to the technical field of switch cabinets, in particular to a switch cabinet for arcing pressure relief.

Background

The switch cabinet is used as an electrical device and is mainly used for opening, closing, controlling and protecting the electrical device in the process of generating, transmitting, distributing and converting electric energy of an electric power system. When the switch cabinet cannot timely discharge gas and burnt melts generated by arcing faults due to internal short circuit and other arcing faults in the operation process, the switch cabinet easily causes harm to field operators and endangers the personal safety of the field operators.

As shown in fig. 1 and 2, a conventional medium-voltage gas-insulated switchgear 1 'on the market is basically designed to take measures against gas and burned melt generated by an internal arcing fault, and the gas and the burned melt are introduced into a cable trench 2'; or as shown in fig. 3 and 4, an arc burning channel is arranged at the rear part of the switch cabinet 1 ", and gas and burnt melt generated by internal arc burning faults are transmitted to the upper part of the arc burning channel 2" from bottom to top and are discharged to the outside of the switch cabinet 1 "along the transverse part of the arc burning channel 2" for a certain distance.

The pressure relief mode of introducing gas and melt into the cable duct can only be installed in the environment with the cable duct 2' but cannot be installed in the environment of a mobile vehicle and the like; in addition, high-temperature and high-pressure gas and melt are discharged to the cable duct 2' to possibly damage other cables of normal switch cabinets; moreover, the condition of the cable trench 2 ' is complicated and unstable, for example, the cable trench is shared by a sewer or other purposes in many places, once high-temperature and high-pressure gas and melt are discharged to the cable trench, it is difficult to ensure that the normal use of the cable trench 2 ' is not affected, so that the safety of the cable trench 2 ' cannot be guaranteed.

The state indicator within 0.8m from the cabinet body and below 2m from the ground is not burnt in the national standard, in order to accord with the national standard, most products in the market adopt a pressure relief mode of leading a lengthened arcing channel to the outside of the cabinet body by 2m, the lengthened arcing channel, and the pressure relief mode gets rid of the dependence on a cable duct, but the pressure relief mode cannot play a role in safety guarantee for people or objects outside 0.8m, so that the safety of field operators and objects is difficult to guarantee.

Disclosure of Invention

The invention aims to provide a switch cabinet for arcing pressure relief, which aims to solve the problem that the safety of field operators and articles is difficult to ensure by a pressure relief structure of a traditional switch cabinet during an internal arcing fault test.

The purpose of the invention is realized by the following technical scheme:

the invention provides a switch cabinet for arcing pressure relief, which comprises a pressure relief cabinet and at least one switch cabinet main body, wherein the pressure relief cabinet and the at least one switch cabinet main body are arranged side by side; a pressure relief chamber is arranged in the switch cabinet main body, and a pressure relief opening communicated with the pressure relief chamber is formed in the lower part of the side face of the switch cabinet main body; the pressure relief cabinet comprises a cabinet body and a plurality of filtering components; the lower part of the side surface of the cabinet body is provided with a connecting port, and the top of the connecting port is provided with a discharge port for communicating the external environment; the cabinet body is internally provided with a pressure relief channel which bypasses the inner space of the cabinet body; two ends of the pressure relief channel are respectively communicated with the connecting port and the discharge port; the cabinet body is arranged on the side part of the switch cabinet main body, and the connecting port is communicated with the pressure relief chamber; a plurality of filter assemblies are arranged at intervals in the pressure relief channel.

Preferably, a plurality of partition boards which are arranged at intervals along a first direction are fixed in the cabinet body so as to divide the space in the cabinet body into a plurality of compartments; wherein an endmost compartment communicates with the discharge opening; the other most marginal compartment is communicated with the connecting port; each partition board is provided with a through hole; the through holes are arranged in a staggered mode along the first direction; two adjacent compartments are communicated through the through hole; the plurality of compartments form the pressure relief channel.

Preferably, the two through holes on two adjacent partition plates are respectively close to two side walls of the cabinet body which are oppositely arranged along the second direction; the second direction is perpendicular to the first direction, and the first direction or the second direction is the height direction of the cabinet body.

Preferably, each through hole is fixed with one filter assembly; the filtering assemblies are fixed on the discharge port, and the filtering assemblies on the discharge port and the adjacent filtering assemblies on the partition plate are respectively close to two side walls of the cabinet body, which are oppositely arranged along the second direction.

Preferably, the filter assembly is a filter plate, and a plurality of filter holes are formed in the filter plate.

Preferably, the first direction is a height direction of the cabinet body, and the second direction is a length direction of the cabinet body.

Preferably, the switch cabinet main bodies are multiple in number, and the pressure relief ports of two adjacent switch cabinet main bodies are connected and communicated; the pressure relief cabinets are arranged on the outer sides of the switch cabinet main bodies and are arranged in parallel with the switch cabinet main bodies; and the pressure relief port of the switch cabinet main body at the most edge is communicated with the connecting port.

Preferably, the number of the pressure relief cabinets is one; the switch cabinet main bodies are divided into a first switch cabinet main body and at least one second switch cabinet main body; the second switch cabinet main body is arranged between the pressure relief cabinet and the first switch cabinet main body; the pressure relief opening is formed in one side face of the first switch cabinet main body; the two opposite side surfaces of the second switch cabinet main body are provided with the pressure relief ports; the pressure relief port of the first switch cabinet main body is connected and communicated with the pressure relief port of the adjacent second switch cabinet main body; the pressure relief ports of two adjacent second switch cabinet main bodies are connected and communicated; and a connecting port of the pressure relief cabinet is connected and communicated with the adjacent pressure relief port of the second switch cabinet main body.

Preferably, the number of the pressure relief cabinets is two, and the switch cabinet bodies are arranged between the two pressure relief cabinets; the pressure relief openings are formed in two opposite side faces of the switch cabinet main body, and the pressure relief openings in the two outermost side faces of the switch cabinet main body are connected and communicated with the connectors of the two pressure relief cabinets in a one-to-one correspondence mode.

Preferably, the switch cabinet main part quantity is a plurality of, the pressure release cabinet arranges in adjacent two between the switch cabinet main part, the connector has all been seted up on the relative both sides face of pressure release cabinet, two connectors of pressure release cabinet one-to-one ground and two adjacent the pressure release mouth of switch cabinet main part meet and communicate.

According to the technical scheme, the invention has the advantages and positive effects that: the cabinet body is arranged on the side surface of the switch cabinet main body and is provided with a connecting port communicated with a pressure relief chamber at the bottom of the switch cabinet main body and a discharge port communicated with the external environment; the connecting port is arranged at the bottom of the side surface of the cabinet body, and the discharge port is arranged on the top surface of the cabinet body; the cabinet body is internally provided with a pressure relief channel which bypasses the inner space of the cabinet body, the two ends of the pressure relief channel are respectively communicated with the connecting port and the discharge port, and the pressure relief channel is internally provided with a plurality of filtering components. When the switch cabinet main part takes place the internal failure and burns the arc, the high hot high-pressure gas and the fuse that produce all can collect in the pressure release chamber to gas and the fuse that conveys through the pressure release chamber can get into the pressure release passageway of pressure release cabinet through the connector, and then make the fuse that conveys by the pressure release chamber filtered by filter element, and the high hot high-pressure gas that conveys by the pressure release chamber of switch cabinet main part carries out certain cooling and step-down along longer pressure release passageway, reachs the discharge port and upwards discharges. Therefore, the pressure relief channel is matched with the filtering component, so that the fusant transmitted by the pressure relief chamber of the switch cabinet main body is filtered by the filtering component and is left in the cabinet body, and further cannot be sprayed to people and articles below; the filtered high-temperature and high-pressure gas is cooled, decompressed and decelerated, and then is discharged upwards from the top surface of the cabinet body, so that the safety of people and articles around the cabinet body is guaranteed; the pressure relief cabinet and the switch cabinet main body are arranged side by side, so that the height space of the pressure relief cabinet can be fully utilized, the pressure relief channel can be designed to be longer, and the cooling and filtering effects on gas melts are further improved; gas and melt do not need to be discharged in the cable trench, thereby avoiding damaging other cables of the normal switch cabinet main body in the cable trench and preventing other purposes of the cable trench from being influenced.

Drawings

For the purpose of easy explanation, the present invention will be described in detail with reference to the following preferred embodiments and the accompanying drawings.

FIG. 1 is a schematic diagram of one of the pressure relief structures of a conventional switch cabinet;

FIG. 2 is a side view of the pressure relief structure shown in FIG. 1;

FIG. 3 is a schematic diagram of another pressure relief structure of a conventional switch cabinet;

FIG. 4 is a schematic view of an arcing channel of the pressure relief structure shown in FIG. 3;

FIG. 5 is a schematic diagram of the structure of the preferred embodiment of the switch cabinet for arcing pressure relief of the present invention;

FIG. 6 is an exploded view of the switch cabinet for arcing pressure relief shown in FIG. 5;

FIG. 7 is a side view of the switchgear for arcing pressure relief shown in FIG. 5;

FIG. 8 is a schematic structural view of a switchgear body of a preferred embodiment of the present invention for arcing pressure relief;

fig. 9 is a schematic structural diagram of a pressure relief cabinet according to a preferred embodiment of the switch cabinet for arcing pressure relief of the present invention.

Description of reference numerals: 1', a medium-voltage gas-insulated switchgear; 2', a cable trench; 1', a switch cabinet; 2', an arc channel; 1. a switch cabinet main body; 1a, a first switch cabinet main body; 1b, a second switch cabinet main body; 11. a pressure relief chamber; 12. a pressure relief port; 13. a switch chamber; 14. a cable chamber; 15. a low pressure chamber; 2. a pressure relief cabinet; 21. a cabinet body; 22. a filter assembly; 221. a filter plate; 23. a pressure relief channel; 231. a compartment; 24. a connecting port; 25. a discharge port; 26. a separator.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The invention provides a switch cabinet for arcing pressure relief, which is used for guaranteeing the safety of field operators and articles.

Referring to fig. 5 to 7, in the present embodiment, the switch cabinet for arcing and pressure relief includes a plurality of switch cabinet bodies 1 and a pressure relief cabinet 2. A plurality of cubical switchboard main parts 1 and pressure release cabinet 2 arrange side by side, and wherein, a plurality of cubical switchboard main parts 1 are arranged along the width direction of cubical switchboard main part 1 in proper order, and direct contact between a plurality of cubical switchboard main parts 1, and pressure release cabinet 2 contacts with a cubical switchboard main part 1 at the most marginal. The pressure relief cabinet 2 is used for filtering gas and melt generated when the switch cabinet main body 1 has an internal arcing fault, and discharging the gas generated when the switch cabinet main body 1 has the internal arcing fault to the external environment. The sizes of the switch cabinet main bodies 1 are the same; the length of the pressure relief cabinet 2 is equal to that of the switch cabinet main body 1, the width of the pressure relief cabinet 2 is equal to that of the switch cabinet main body 1, and the height of the pressure relief cabinet 2 is equal to that of the switch cabinet main body 1. The switch cabinet main body is a gas insulation switch cabinet main body.

Referring to fig. 8, each switch cabinet body 1 is provided therein with a pressure relief chamber 11, a switch chamber 13, a cable chamber 14 and a low voltage chamber 15.

Wherein, the pressure relief chamber 11 is located at the lower part of the switch cabinet main body 1, and the pressure relief chamber 11 is an empty chamber. The lower part of the side surface of the switch cabinet main body 1 is provided with a pressure relief opening 12 communicated with the pressure relief chamber 11. The pressure relief port 12 is opened on the side surface in the width direction of the switch cabinet main body 1.

The switch chamber 13 is located above the relief chamber 11, and the switch chamber 13 communicates with the relief chamber 11 through a check valve; the switch chamber 13 is used for mounting an electrical switch.

The cable chamber 14 is located in front of the pressure relief chamber 11, and the cable chamber 14 communicates with the pressure relief chamber 11 through a check valve; the cable chamber 14 is used for installing cables.

The low-pressure chamber 15 is located above the cable chamber 14 and in front of the switch chamber 13. In other words, the low pressure chamber 15 is arranged diagonally to the relief chamber 11; the switch compartment 13 is arranged diagonally to the cable compartment 14.

In the event of an internal arcing fault in the switchgear cabinet 13 and/or the cable compartment 14, the gases and melts produced enter the pressure relief chamber 11 through the one-way valve and are discharged out of the switchgear cabinet body 1 through the pressure relief opening 12.

Referring to fig. 9, the pressure relief cabinet 2 includes a cabinet 21 and a plurality of filter assemblies 22 installed in the cabinet 21. The cabinet body 21 is installed at a side portion of the switch cabinet main body.

A connecting port 24 is provided at the lower portion of the side of the cabinet 21, and a discharge port 25 for communicating with the external environment is opened at the top of the cabinet 21. The connection port 24 is opened on one side surface in the width direction of the cabinet 21.

A plurality of partition boards 26 which are arranged at intervals along a first direction are fixed in the cabinet body 21; the first direction is a height direction of the cabinet 21. The partitions 26 are parallel to each other and to the floor of the switchgear cabinet body 1.

A plurality of partitions 26 partition the space inside the cabinet 21 into a plurality of compartments 231; the uppermost compartment 231 is in communication with the drain 25; the lowermost compartment 231 is communicated with the connecting port 24; two adjacent compartments 231 are in communication through the filter assembly 22; the plurality of compartments 231 constitute a pressure relief passage 23 that bypasses the interior space of the cabinet 21. Both ends of the pressure relief channel 23 communicate with a connection port 24 and a discharge port 25, respectively.

Each partition 26 is provided with a through hole, and the through holes are arranged in a staggered manner along the height direction of the cabinet body 21; further, two through holes on two adjacent partition boards 26 are respectively close to two side walls of the cabinet body 21 which are oppositely arranged along the second direction; the second direction is a longitudinal direction of the cabinet 21. The discharge port 25 and the through hole of the uppermost partition plate 26 are respectively adjacent to the opposite side walls in the length direction of the cabinet 21.

It should be mentioned that, the two opposite side walls in the length direction of the cabinet 21 refer to two side walls of the cabinet 21 spaced apart from each other in the length direction of the cabinet 21, and the two side walls of the cabinet 21 are opposite to each other, so that the circulation length of each compartment 231 is maximized, and the length of the pressure release channel 23 is further maximized.

The filter assemblies 22 are arranged in the pressure relief channel 23 at intervals along the course of the pressure relief channel 23. The filter assembly 22 is a filter plate 221, and the filter plate 221 is provided with a plurality of dense filter holes. A filter plate 221 is fixedly installed in each through hole of the partition plate, and the filter plate 221 and the partition plate 26 are located on the same plane. A filter plate 221 is fixed to the discharge port 25.

Referring to fig. 5 to 7, two switch cabinet bodies 1 share one pressure relief cabinet for pressure relief 2.

For convenience of description, the two switch cabinets 1 are divided into a first switch cabinet 1a and a second switch cabinet 1b, wherein the first switch cabinet 1a is arranged at the leftmost side, the pressure relief cabinet is arranged at the rightmost side, and the pressure relief cabinet is located at the right side of the second switch cabinet, with reference to the view directions of fig. 4 to 6.

A pressure relief opening 12 is formed in the right side surface of the first switch cabinet main body 1 a; the left side surface and the right side surface of the second switch cabinet main body 1b are both provided with pressure relief ports 12. The pressure relief port 12 of the first switch cabinet main body 1a is connected and communicated with the pressure relief port 12 on the left side surface of the second switch cabinet main body 1 b; the connection port 24 of the pressure relief cabinet 2 is connected to and communicated with the pressure relief port 12 on the right side surface of the second switch cabinet body 1 b.

In other words, the relief chamber 11 of the first switch cabinet body 1a and the relief chamber 11 of the second switch cabinet body 1b are communicated through the relief port 12 to form a connection channel, one end of the connection channel is blocked, and the other end of the connection channel is communicated with the connection port 24 of the relief cabinet 2.

In other embodiments not shown in the figures, the number of switch cabinet bodies can also be greater, with a plurality of switch cabinet bodies arranged side by side with the pressure relief cabinet on the rightmost side. The pressure relief openings are formed in the left side face and the right side face of the switch cabinet main body except for the leftmost switch cabinet main body only in the right side face according to the mode of the first switch cabinet main body, and the pressure relief openings are formed in the left side face and the right side face of the other switch cabinet main bodies according to the mode of the second switch cabinet main body, so that the switch cabinet main bodies are communicated and all pressure is relieved by the pressure relief cabinet.

Referring to fig. 5 to 9, the working principle of the present invention is as follows: in the event of an internal arcing fault in the switching chamber 13 and/or the cable chamber 14 of the switchgear body 1, the gases and melts produced are conveyed through the non-return valve to the corresponding relief chamber 11. The gas and the melt delivered from the relief chamber 11 can enter the relief channel 23 through the relief port 12 and the connection port 24, and the melt delivered from the relief chamber 11 of the switch cabinet body 1 is filtered by the plurality of filter assemblies 22, and the gas delivered from the relief chamber 11 of the switch cabinet body 1 reaches the discharge port 25 along the relief channel 23 and is discharged upward. Further, when an internal arcing fault occurs simultaneously in a plurality of switch cabinet bodies 1, the generated gas and melt may be transmitted to the pressure relief channel 23 of the common pressure relief cabinet 2 through the connection channel. The pressure relief channel 23 is matched with the filtering component 22, so that the fusant transmitted from the pressure relief chamber 11 of the switch cabinet main body 1 is filtered by the filtering component 22 and is left in the cabinet body 21, and further cannot be sprayed to people and articles below; and the filtered high-temperature and high-pressure gas is cooled, decompressed and decelerated, and then is discharged upwards from the top surface of the cabinet body 21, so that the safety of people and articles around is guaranteed.

In other embodiments not shown in the drawings, the number of the switch cabinet main bodies can be one, in this case, the pressure relief cabinet is installed on the side surface of the switch cabinet main body, the side surface of the switch cabinet main body close to the pressure relief cabinet is provided with a pressure relief opening, and the pressure relief opening is communicated with the connecting opening.

In other embodiments, not shown, two pressure relief cabinets may be used, and in this case, a plurality of switch cabinet bodies are located between the two pressure relief cabinets. Pressure relief openings are formed in two opposite side faces of each switch cabinet main body. The pressure relief ports on the outer side surfaces of the two switch cabinet main bodies at the most edges are connected and communicated with the connecting ports of the two pressure relief cabinets in a one-to-one correspondence manner.

In other embodiments not shown in the drawings, the number of the switch cabinet main bodies can be more, a plurality of switch cabinet main bodies are arranged side by side, the pressure relief cabinet is positioned between two adjacent switch cabinet main bodies, two opposite side surfaces of the pressure relief cabinet are both provided with connecting ports, and the two connecting ports of the pressure relief cabinet are both communicated with the inlet end of the pressure relief channel; the two connectors of the pressure relief cabinet are connected and communicated with the pressure relief ports of the two adjacent switch cabinet main bodies in a one-to-one correspondence manner.

In other embodiments, not shown, the filter assembly may also be mounted and fixed in the compartment, in other words, the filter plate is vertically arranged in the compartment, i.e., the filter plate is perpendicular to the bottom plate of the cabinet, and the filter plate divides the pressure relief channel into multiple sections.

In other embodiments, not shown, the partitions may also be arranged obliquely to the floor, with no parallelism between the partitions.

In other embodiments, not shown, the height of each switch cabinet body is the same, and the width of at least one switch cabinet body is different from the width of the other switch cabinet bodies.

In other embodiments, not shown, the length of the pressure relief cabinet is greater than the length of the switchgear body.

In other embodiments, not shown, the width of the pressure relief cabinet is not equal to the width of the switchgear body.

In other embodiments, which are not shown in the drawings, the partition boards are arranged at intervals along the length direction of the cabinet body, the through holes on two adjacent partition boards are respectively close to two opposite side surfaces in the height direction of the cabinet body, the last compartment is communicated with the connecting port, and the foremost compartment is communicated with the discharge port.

In other embodiments, which are not shown in the drawings, the partition boards are arranged at intervals along the length direction or the width direction of the cabinet body, and the through holes on two adjacent partition boards are respectively close to two opposite side surfaces of the cabinet body in the height direction. When the pressure relief cabinet is arranged on the left side of the switch cabinet main bodies, the rightmost compartment is communicated with the connecting port, and the leftmost compartment is communicated with the discharge port; when the pressure relief cabinet is arranged on the right side of the switch cabinet main bodies, the leftmost compartment is communicated with the connecting port, and the rightmost compartment is communicated with the discharge port.

The invention has at least the following advantages:

1. the pressure relief channel 23 is matched with the filtering component 22, so that the fusant transmitted from the pressure relief chamber 11 of the switch cabinet main body 1 is filtered by the filtering component 22 and is left in the cabinet body 21, and further cannot be sprayed to people and articles below; and the filtered high-temperature and high-pressure gas is cooled, decompressed and decelerated, and then is discharged upwards from the top surface of the cabinet body 21, so that the safety of people and articles around is guaranteed.

2. Pressure release cabinet 2 arranges side by side with cubical switchboard main part 1, therefore can make full use of the high space in the pressure release cabinet 2 for pressure release channel 23 can design longer, further increases cooling and the filter effect to the fuse.

3. Gas and melt do not need to be discharged in the cable trench, thereby avoiding damaging other normal cables of the switch cabinet body 1 in the cable trench and preventing other purposes of the cable trench from being affected.

4. The pressure relief chambers 11 of the switch cabinet main bodies 1 share the pressure relief channel 23 in the same pressure relief cabinet 2, so that the manufacturing cost of the switch cabinet main bodies 1 is reduced.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A switch cabinet for arcing pressure relief is characterized by comprising a pressure relief cabinet and at least one switch cabinet main body which are arranged side by side; a pressure relief chamber is arranged in the switch cabinet main body, and a pressure relief opening communicated with the pressure relief chamber is formed in the lower part of the side face of the switch cabinet main body;

the pressure release cabinet includes:

the lower part of the side surface of the cabinet body is provided with a connecting port, and the top of the cabinet body is provided with a discharge port for communicating with the external environment; the cabinet body is internally provided with a pressure relief channel which bypasses the inner space of the cabinet body; two ends of the pressure relief channel are respectively communicated with the connecting port and the discharge port; the cabinet body is arranged on the side part of the switch cabinet main body, and the connecting port is communicated with the pressure relief chamber;

a plurality of filter assemblies arranged at intervals in the pressure relief channel.

2. The switchgear for arcing pressure relief according to claim 1, wherein a plurality of partitions are fixed in said cabinet body and spaced apart in a first direction to divide a space in said cabinet body into a plurality of compartments; wherein an endmost compartment communicates with the discharge opening; the other most marginal compartment is communicated with the connecting port; each partition board is provided with a through hole; the through holes are arranged in a staggered mode along the first direction; two adjacent compartments are communicated through the through hole; the plurality of compartments form the pressure relief channel.

3. The switch cabinet for arcing and pressure relief according to claim 2, wherein two said through holes of two adjacent said partitions are respectively close to two sidewalls of said cabinet body oppositely arranged along a second direction; the second direction is perpendicular to the first direction, and the first direction or the second direction is the height direction of the cabinet body.

4. The switch cabinet for arcing pressure relief according to claim 3, wherein each of said through holes is fixed with one of said filter assemblies; the filtering assemblies are fixed on the discharge port, and the filtering assemblies on the discharge port and the adjacent filtering assemblies on the partition plate are respectively close to two side walls of the cabinet body, which are oppositely arranged along the second direction.

5. The switchgear for arcing pressure relief according to claim 4, wherein said filter assembly is a filter plate, said filter plate having a plurality of filter holes.

6. The switchgear for arcing pressure relief according to claim 3, wherein said first direction is a height direction of said cabinet body and said second direction is a length direction of said cabinet body.

7. The switch cabinet for arcing pressure relief according to claim 1, wherein there are a plurality of switch cabinet bodies, and the pressure relief ports of two adjacent switch cabinet bodies are connected and communicated;

the pressure relief cabinets are arranged on the outer sides of the switch cabinet main bodies and are arranged in parallel with the switch cabinet main bodies; and the pressure relief port of the switch cabinet main body at the most edge is communicated with the connecting port.

8. The switchgear for arcing pressure relief according to claim 7, wherein the number of said pressure relief cabinets is one; the switch cabinet main bodies are divided into a first switch cabinet main body and at least one second switch cabinet main body; the second switch cabinet main body is arranged between the pressure relief cabinet and the first switch cabinet main body;

the pressure relief opening is formed in one side face of the first switch cabinet main body; the two opposite side surfaces of the second switch cabinet main body are provided with the pressure relief ports; the pressure relief port of the first switch cabinet main body is connected and communicated with the pressure relief port of the adjacent second switch cabinet main body; the pressure relief ports of two adjacent second switch cabinet main bodies are connected and communicated; and a connecting port of the pressure relief cabinet is connected and communicated with the adjacent pressure relief port of the second switch cabinet main body.

9. The switch cabinet for arcing pressure relief according to claim 7, wherein said number of pressure relief cabinets is two, said plurality of switch cabinet bodies being arranged between two of said pressure relief cabinets; the pressure relief openings are formed in two opposite side faces of the switch cabinet main body, and the pressure relief openings in the two outermost side faces of the switch cabinet main body are connected and communicated with the connectors of the two pressure relief cabinets in a one-to-one correspondence mode.

10. The switch cabinet for arcing pressure relief according to claim 1, wherein the number of the switch cabinet bodies is plural, the pressure relief cabinet is disposed between two adjacent switch cabinet bodies, the connectors are respectively disposed on two opposite side surfaces of the pressure relief cabinet, and the two connectors of the pressure relief cabinet are connected and communicated with the pressure relief ports of the two adjacent switch cabinet bodies in a one-to-one correspondence manner.

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