Gas insulation switch cabinet

Abstract

The utility model relates to a gas insulated switch cabinet, which comprises a gas tank compartment and a gas insulated switch cabinet, at least one conducting bar extending into the gas tank compartment; the arcing piece is located in the gas tank compartment, the arcing piece is connected with the grounding plate assembly and grounded, and the arcing piece is arranged to protrude inwards relative to the grounding plate assembly; and the arc striking piece is located in the gas tank compartment, the arc striking piece is electrically connected with the conducting bar, the arc striking piece and the arcing piece are arranged in a spaced mode, and the arc striking piece is configured to strike an arc towards the arcing piece. According to the utility model, the arc direction and path can be effectively controlled, the gas insulation switch cabinet is prevented from being broken down, and the life safety of personnel is prevented from being harmed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of gas insulated switchgear. BACKGROUND

[0002] Gas insulated switchgear (GIS, also known as gas insulated metal-enclosed switchgear) is a compact switchgear for high-voltage power systems. Gas insulated switchgear mainly uses inert gas as insulation medium to replace traditional air insulation equipment. Gas insulated switchgear seals components such as circuit breakers, disconnectors, grounding switches, and transformers in a metal shell filled with high-pressure gas, and has the advantages of small size, high reliability, and strong environmental adaptability, and is widely used in scenarios such as substations and urban power grids.

[0003] In traditional gas insulated switchgear, arc burning protection usually relies on a single grounding plate or simple electrode structure, and the protection effect is limited. For example, for harsh working conditions that are prone to occur in gas insulated switchgear (such as the space farthest from the power source), when arcing occurs, the arc may burn through the main circuit or grounding components due to unstable and uncontrollable path, causing equipment damage and threatening personnel safety. SUMMARY

[0004] The utility model provides at least one embodiment of a kind of gas insulated switchgear, comprising: gas tank compartment, wherein the ground plate assembly is provided in the gas tank compartment;At least one electrically conductive row extending into the gas tank compartment;Arc burning piece, located in the gas tank compartment, the arc burning piece is connected with the ground plate assembly and the arc burning piece is grounded, the arc burning piece is set to protrude inward relative to the ground plate assembly;Arc striking piece, located in the gas tank compartment, the arc striking piece is electrically connected with the electrically conductive row, the arc striking piece is gap set with the arc burning piece, and the arc striking piece is configured to strike arc to the arc burning piece.

[0005] In at least one embodiment of the utility model, the at least one electrically conductive row includes a plurality of phase electrically conductive rows arranged at intervals in a first direction;The gas insulated switchgear includes at least one arc striking piece, each arc striking piece is electrically connected with the electrically conductive row of the corresponding phase in the plurality of phase electrically conductive rows;The gas insulated switchgear includes a plurality of arc burning pieces, and each arc striking piece is arranged between the corresponding adjacent two arc burning pieces in the plurality of arc burning pieces in the first direction.

[0006] In at least one embodiment of the utility model, the plurality of phase electrically conductive rows are M-phase electrically conductive rows, at least one arc striking piece is M arc striking pieces, the M arc striking pieces correspond to the M-phase electrically conductive rows one by one, M is an integer greater than 1;The plurality of arc burning pieces are N arc burning pieces, N=M+1, N is an integer.

[0007] The gas insulated switch cabinet provided by at least one embodiment of the utility model still includes wiring bushing and electrically conductive connecting piece, wherein the electrically conductive row is connected with one end of the wiring bushing in the gas tank compartment through the electrically conductive connecting piece.

[0008] In the gas insulated switch cabinet provided by at least one embodiment of the utility model, the arc striking piece is electrically connected with the electrically conductive row through the electrically conductive connecting piece, and the arc striking piece extends from the electrically conductive connecting piece towards the arc burning piece.

[0009] In the gas insulated switch cabinet provided by at least one embodiment of the utility model, the minimum distance between the arc striking piece and the arc burning piece is smaller than the minimum distance between the arc striking piece and the grounding plate assembly, and / or the minimum distance between the arc striking piece and the arc burning piece is smaller than the minimum distance between the electrically conductive connecting piece and the grounding plate assembly.

[0010] In the gas insulated switch cabinet provided by at least one embodiment of the utility model, one end of the arc burning piece close to the electrically conductive row in the height direction of the gas insulated switch cabinet is arc-shaped, and / or both ends of the arc burning piece in the second direction are arc-shaped, wherein the second direction is perpendicular to the first direction and perpendicular to the height direction of the gas insulated switch cabinet.

[0011] In the gas insulated switch cabinet provided by at least one embodiment of the utility model, the arc striking piece comprises an arc striking section, the arc striking section extends along the first direction, the arc striking section comprises a first end and a second end opposite to each other along the first direction, the first end and / or the second end of the arc striking section is arc-shaped, and the convex direction of the arc-shaped is towards the arc burning piece.

[0012] In the gas insulated switch cabinet provided by at least one embodiment of the utility model, the arc striking piece further comprises a connecting section, the connecting section is connected with one end of the arc striking section in the first direction and extends along the height direction of the gas insulated switch cabinet, so that the arc striking piece is L-shaped, and the arc striking section is electrically connected with the electrically conductive row through the connecting section.

[0013] In the gas insulated switch cabinet provided by at least one embodiment of the utility model, the width of the arc burning piece in the second direction is not less than the width of the arc striking section in the second direction, wherein the second direction is perpendicular to the first direction and perpendicular to the height direction of the gas insulated switch cabinet.

[0014] In the gas insulated switch cabinet provided by at least one embodiment of the utility model, the plurality of arc burning pieces comprise: a first arc burning block, at least one intermediate arc burning block and a second arc burning block arranged in the first direction in sequence, the intermediate arc burning block is a symmetric structure about a first plane, a perpendicular line of the first plane is along the first direction, the first arc burning block and the second arc burning block are respectively same with one of two half cylinders in the symmetric structure, and the convex directions of the first arc burning block and the second arc burning block are towards the arc igniting piece.

[0015] In the gas insulated switch cabinet provided by at least one embodiment of the utility model, the arc burning piece is made of metal, the arc igniting piece is made of metal, and the metal comprises iron material. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figures 1-2 The utility model provides the perspective drawing of the gas insulated switch cabinet of some embodiments.

[0018] Figure 3 The utility model provides the sectional view of the gas insulated switch cabinet of some embodiments.

[0019] Figures 4-5 The utility model provides the schematic view of the gas tank compartment of some embodiments.

[0020] Figure 6 The utility model provides the schematic view of the grounding plate assembly and the arc burning piece of some embodiments.

[0021] Figures 7-8 The utility model provides the schematic view of the arc igniting piece of some embodiments.

[0022] Figure 9 The utility model provides the schematic view of the arc burning piece of some embodiments.

[0023] Figure 10 The utility model provides the schematic view of the local space in the gas tank compartment of some embodiments. DETAILED DESCRIPTION

[0024] With reference to the drawings and the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0025] Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined in the present application.

[0026] The terms "first", "second", and similar terms used in the embodiments of the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "one", "an" or "the" do not represent a quantity limitation, but represent the existence of at least one. Similarly, the terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0027] "Inner", "outer", "upper", "lower" and the like are used only to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships may also change accordingly. In the embodiments of the present application, the term "about" used in the present application is an approximate value and a small change will not significantly affect the practice of the aspects disclosed in the present application, and the embodiments of the present application do not have the indicated numerical limitation. The drawings in the present application are not strictly drawn according to the actual proportion, and the specific size and quantity of each structure can be determined according to the actual need. The drawings described in the present application are only structural schematic diagrams.

[0028] At least one embodiment of the present application provides a gas insulated switchgear, comprising: a gas tank compartment, wherein a grounding plate assembly is arranged in the gas tank compartment; at least one conductive row extending into the gas tank compartment; an arc striking piece located in the gas tank compartment, the arc striking piece being connected with the grounding plate assembly and grounded, the arc striking piece being arranged to protrude inwardly relative to the grounding plate assembly; and an arc striking piece located in the gas tank compartment, the arc striking piece being electrically connected with the conductive row, the arc striking piece being arranged in a gap with the arc striking piece, the arc striking piece being configured to strike an arc to the arc striking piece.

[0029] The utility model discloses a gas tank compartment is provided with the cooperation of the arc burning spare and the arc leading spare, and the arc leading spare guides the electric arc to the arc burning spare and carries out the energy consumption until extinguishing, and the arc burning spare can provide the energy consumption point of the replacement ground plate for the electric arc, which can effectively control the electric arc direction and path, makes the electric arc extinguish as soon as possible, thereby avoiding the gas insulated switchgear from being punctured and avoiding the life safety of nearby personnel from being hurt. The utility model discloses can reduce or avoid the damage of the electric arc to the conductive row in the main circuit, and avoid the influence on the function of the gas insulated switchgear. The utility model discloses sets up the arc burning spare and the arc leading spare, can make the product have the advantages of strong arc controllability, reliable insulation and stable arc burning protection performance.

[0030] The embodiments of the utility model and examples thereof will be described in detail below with reference to the drawings.

[0031] Figures 1-2 The utility model provides the perspective diagram of some embodiments of the utility model of gas insulated switchgear. Figure 3 The utility model provides the sectional view of some embodiments of the utility model of gas insulated switchgear. Figures 4-5 The utility model provides the schematic view of some embodiments of the utility model of gas tank compartment.

[0032] For example, as shown in the drawings, Figures 1-5 The utility model discloses a gas tank compartment 10, at least one conductive row 30 extending into the gas tank compartment 10, arc burning spare 22 and arc leading spare 21. The gas tank compartment 10 is equipped with ground plate assembly 11. The arc burning spare 22 is located in the gas tank compartment 10, and the arc burning spare 22 is connected with the ground plate assembly 11 and grounded, and the arc burning spare 22 is set to protrude inward relative to the ground plate assembly 11. The arc leading spare 21 is located in the gas tank compartment 10, and the arc leading spare 21 is electrically connected with the conductive row 30. The arc leading spare 21 is gap set with the arc burning spare 22, and the arc leading spare 21 is configured to lead the arc to the arc burning spare 22.

[0033] In the embodiments of the utility model, the arc burning spare 22 can also be called the arc preventing spare, and the arc leading spare 21 leads the arc to the arc burning spare 22, which means that the arc leading spare 21 guides the electric arc to the arc burning spare 22. Since the arc burning spare 22 is grounded, the electric arc can reach the arc burning spare 22 through the arc leading spare 21 when the current is short-circuited, so that the arc energy can be consumed (also called arc burning) on the arc burning spare 22, and the electric arc will eventually be extinguished.

[0034] The utility model discloses a gas tank compartment is provided with the arc burning spare and the arc guiding spare that cooperate with each other, and the arc guiding spare guides the electric arc to the arc burning spare and carries out energy consumption until extinguishing, and the arc burning spare is used as the sacrificial material, and the electric arc ablation is concentratedly borne, so this can effectively control the electric arc direction and path, and the electric arc can be extinguished as soon as possible, thereby avoiding the gas insulated switchgear being punctured and avoiding the life safety of nearby personnel being harmed.

[0035] In some embodiments of the utility model, the conductive bar 30 is made of copper.

[0036] In some examples, the arc burning spare 22 is a protruding bump (also called a protruding column) inward from the grounding plate assembly 11. For example, the arc burning spare 22 is made of metal, such as iron material; for another example, the arc guiding spare 21 is made of metal, such as iron material. The arc burning spare of the utility model is used as a sacrificial material for replacing the grounding plate assembly, and the electric arc ablation is concentratedly borne, thereby avoiding the gas insulated switchgear being punctured and playing a protective role.

[0037] For example, the arc burning spare 22 and / or the arc guiding spare 21 can be made of iron material.

[0038] The arc burning spare 22 and / or the arc guiding spare 21 of the embodiments of the utility model are made of a material more resistant to burning than the conductive bar 30 and the conductive connecting piece 31, can well bear the electric arc ablation, avoid the gas insulated switchgear being punctured, and can reduce the risk of copper damage.

[0039] For example, as shown in FIGS. Figure 3 and Figure 4 The at least one conductive bar 30 described above in the utility model includes a multiphase conductive bar 30 arranged at intervals in the first direction D1. For example, the multiphase conductive bar 30 can be denoted as an M-phase conductive bar 30, and M is a positive integer. For example, if the multiphase conductive bar 30 is a three-phase conductive bar 30, then M is equal to 3. Of course, this is merely exemplary and does not limit the embodiments of the utility model. In addition, for the convenience of text description, the following mainly takes the three-phase conductive bar 30 as an example for description, but this does not limit the scope of the utility model.

[0040] Figure 6 The utility model provides a grounding plate assembly and the schematic diagram of arc burning spare for some embodiments of the utility model.

[0041] In some examples, the gas insulated switchgear 100 comprises at least one arc striking piece 21, each arc striking piece 21 being electrically connected with the conductive bar 30 of a corresponding phase of the multi-phase conductive bars 30. The gas insulated switchgear 100 comprises a plurality of the arc burning pieces 22 described above, each arc striking piece 21 being arranged between two corresponding adjacent arc burning pieces 22 in the first direction D1, whereby each arc burning piece 22 is spaced apart from the corresponding arc burning piece 22.

[0042] In some examples, at least one arc striking piece 21 in the utility model can be recorded as M arc striking pieces 21, wherein the M arc striking pieces 21 correspond to the M-phase conductive bars 30 one by one, that is, each arc striking piece 21 is electrically connected with the conductive bar 30 of a corresponding phase. The plurality of arc burning pieces 22 in the utility model is N arc burning pieces 22, N = M + 1, N is an integer. For example, as shown in Figure 5 and Figure 6 indicated, the gas tank compartment 10 has four arc burning pieces 22 and three arc striking pieces 21, wherein the three arc striking pieces 21 correspond to the three-phase conductive bars 30 one by one.

[0043] The utility model sets one arc striking piece on each phase of the multi-phase conductive bar, so that the technical effect is better in arc control, insulation reliability and arc burning protection.

[0044] In other examples, the M arc striking pieces 21 in the gas tank compartment 10 can not be in one-to-one correspondence with the multi-phase conductive bars 30, for example, only one arc striking piece 21 is electrically connected with the conductive bar 30 of a corresponding phase in the three-phase conductive bars 30, and the conductive bars 30 of the other two phases can not be provided with arc striking pieces 21, or, for example, only two arc striking pieces 21 are electrically connected with the conductive bars 30 of two corresponding phases in the three-phase conductive bars 30, and the conductive bar 30 of the other phase can not be provided with an arc striking piece 21, which is not limited by the utility model, and can be determined according to specific conditions.

[0045] For example, as shown in Figures 4-6 indicated, the first arc striking piece 204 is arranged between the arc burning piece 202 and one of the arc burning pieces 203 (the arc burning piece 203 close to the arc burning piece 202 and adjacent to the arc burning piece 202) in the first direction D1, the second arc striking piece 205 is arranged between the two arc burning pieces 203 in the middle in the first direction D1, and the third arc striking piece 206 is arranged between the arc burning piece 201 and the other arc burning piece 203 (the arc burning piece 203 close to the arc burning piece 201 and adjacent to the arc burning piece 201) in the first direction D1. Of course, this is only an example and is not a limitation of the embodiment of the utility model.

[0046] The arc leading piece and the arc burning piece are spaced apart from each other, and the gap between the arc leading piece and the arc burning piece satisfies that no discharge occurs between the arc leading piece and the arc burning piece, so that the arc leading piece can lead arc to the arc burning piece when current short circuit occurs, and the arc leading piece and the arc burning piece cannot be broken down when the gas insulated switchgear normally operates, and the insulation performance is satisfied.

[0047] For example, as shown in Figures 3-6 The grounding plate assembly 11 is surrounded by a plurality of plates with different surfaces, for example, the grounding plate assembly 11 comprises a first plate 111, a second plate 112, a third plate 113 and a fourth plate 114. For example, the first plate 111 can be a plate on the top. The second plate 112, the third plate 113 and the fourth plate 114 are plates on each side. The first plate 111, the second plate 112, the third plate 113 and the fourth plate 114 can be integrally formed into a grounding plate assembly, or can be independent plate pieces and formed into a grounding plate assembly by welding or other connection methods, and the embodiments of the utility model do not limit.

[0048] In some examples, the grounding plate assembly 11 and the plurality of arc burning pieces 203 can be integrally formed, or can be separate parts and formed by welding or other connection methods, and the utility model does not limit this.

[0049] For example, as shown in Figures 5-6 The utility model further comprises a wiring sleeve 40 and a conductive connecting piece 31, and the conductive bus 30 is connected to one end of the wiring sleeve 40 in the gas tank compartment 10 through the conductive connecting piece 31. The wiring sleeve 40 passes through the opening 105 of the fourth plate 114.

[0050] For example, the wiring sleeve 40 can be a sleeve on the outgoing line side, so that the gas tank compartment 10 can be the gas tank part farthest from the power supply in the gas insulated switchgear 100. Of course, this is only exemplary, and is not limited to the embodiments of the utility model, for example, the wiring sleeve 40 can also be a sleeve on the incoming line side, which is not limited here.

[0051] In some embodiments of the utility model, the conductive connecting piece 31 can be made of copper.

[0052] For example, as shown in Figures 3-5 The arc leading piece 21 is electrically connected to the conductive bus 30 through the conductive connecting piece 31, and the arc leading piece 21 extends from the conductive connecting piece 31 towards the arc burning piece 22.

[0053] The electric arc can be limited between the arc leading part and the arc burning part, and is far away from the main circuit copper part.

[0054] In some embodiments of the present application, the conductive row 30, the conductive connecting part 31 and the wiring sleeve 40 can be separate parts and are conductively connected to form the main circuit. Of course, this is only exemplary, for example, the conductive row 30, the conductive connecting part 31 and the wiring sleeve 40 can also be an integrally formed conductive assembly structure, which can avoid too many connecting parts and make the installation process relatively simple. It should be noted that the present application is not limited to being divided into the conductive row 30, the conductive connecting part 31 and the wiring sleeve 40 in the conductive circuit, and it can also be divided in other ways, and the embodiments of the present application do not limit this, as long as they can ensure conduction. Here, no further description is given.

[0055] Some embodiments of the present application can reduce the arc on the conductive connecting part 31 or the conductive row 30 to the surface of the arc leading part 21 or push the arc on the conductive connecting part 31 or the conductive row 30 to the arc leading part 21, and then guide the electric arc to the arc burning part 22 through the arc leading part 21, so that the present application can protect the conductive copper part from being burned out, avoid the ground plate assembly from being punctured, and also solve the problem of random uncontrollable electric arc in the prior art, and improve the reliability.

[0056] In some examples, the minimum distance between the arc leading part 21 and the arc burning part 22 is less than the minimum distance between the arc leading part 21 and the ground plate assembly 11, and / or the minimum distance between the arc leading part 21 and the arc burning part 22 is less than the minimum distance between the conductive connecting part 31 and the ground plate assembly 11.

[0057] The present application can control the electric arc to be preferentially guided to the arc burning part by the ingenious arrangement of the distance between the arc leading part and the arc burning part, avoid the ground plate assembly from being punctured due to the influence of the electric arc, and also avoid the electric arc from affecting the main circuit copper part, so that the arc burning protection effect is better.

[0058] Figures 7-8 A schematic view of the arc leading part provided for some embodiments of the present application. Figure 9 A schematic view of the arc burning part provided for some embodiments of the present application. Figure 10 A schematic view of the local space in the gas tank compartment provided for some embodiments of the present application. A schematic view of the local space in the gas tank compartment provided for some embodiments of the present application.

[0059] In some examples, the surface of the arcing member 22 provided as a bump includes a curved portion, which is an arc surface with curvature.

[0060] For example, as shown in Figs. Figure 5 , Figure 6 and Figures 9-10 , one end 221 of the arcing member 22 close to the conducting bar 30 in the height direction H1 of the gas insulated switchgear 100 is in a circular arc shape, and / or both ends (for example, one end 222a and the other end 222b) of the arcing member 22 in the second direction D2 perpendicular to the first direction D1 and perpendicular to the height direction H1 of the gas insulated switchgear 100 are in a circular arc shape. In some embodiments of the utility model, the second direction D2 is consistent with the axial direction of the terminal bushing 40.

[0061] For example, as shown in Figs. Figure 5 and Figure 7 , the arcing member 21 includes an arcing segment 211 extending along the first direction D1, the arcing segment 211 includes a first end 211a and a second end 211b opposite to each other along the first direction D1, and the first end 211a and / or the second end 211b of the arcing segment 211 is in a circular arc shape, and the convex direction of the circular arc shape is towards the arcing member 22. For example, the distance between the first end 211a of the arcing segment 211 and the arcing member 22 is not less than the minimum insulation distance, which refers to the minimum distance between the arcing member 21 and the arcing member 22 without causing discharge.

[0062] The arc-shaped design of the arcing member and / or the arcing member can make the gas insulated switchgear have a uniform and better electric field during normal operation, avoid breakdown between the arcing member and the arcing member during normal operation of the product, and cooperate with the arc-shaped design to make the arcing member and the arcing member have a smaller safety insulation distance. This not only ensures the insulation performance, but also is beneficial to arcing and arc extinguishing, realizes better arcing protection and system stability.

[0063] For example, as shown in Figs. Figure 5 and Figure 7 , the arcing member 21 further includes a connecting segment 212 connected to one end of the arcing segment 211 in the first direction D1 and extending along the height direction H1 of the gas insulated switchgear 100, so that the arcing member 21 is in an L shape, and the arcing segment 211 is electrically connected to the conducting bar 30 via the connecting segment 212 (for example, the arcing segment 211 is connected to the conducting connection 31 via the connecting segment 212, so that the arcing segment 211 and the conducting bar 30 are electrically connected).

[0064] The arc leading piece 21 of the utility model can make the arc on the conductive connecting piece 31 be smoothly and quickly pushed to the arc leading piece 21 by the electric power, avoid the serious loss of copper caused by the arc, and protect the ground plate assembly from being punctured.

[0065] In some embodiments of the utility model, the connecting section 212 and the arc leading section 211 are two parts of the arc leading piece 21 formed integrally, of course, this is merely exemplary and does not limit the utility model.

[0066] For example, as shown in Figure 7 The connecting section 212 of the arc leading piece 21 is provided with a through hole 212a, the through hole 212a is used for the connecting piece to pass through in the second direction D2, so that the connecting section 212 is connected with the conductive connecting piece 31.

[0067] For example, as shown in Figure 5 、 Figure 7 and Figure 10 The conductive connecting piece 31 comprises a first part 311 connected with the conductive row 30 and a second part 312 connected between the first part 311 and the wiring sleeve 40, and the second part 312 is connected with the connecting section 212. For example, the arc leading section 211 is closer to the first plate 111 in the height direction H1 than the conductive connecting piece 31. Of course, this is merely exemplary and does not limit the utility model, and the utility model does not limit the specific structural design of the conductive connecting piece 31 and the overall structure formed by the conductive connecting piece 31 and the conductive row 30, and can be freely adjusted according to actual needs.

[0068] The utility model is very ingenious in structure design, and the arc leading piece can not only realize the arc leading function to control the path of the arc, but also has simple part structure, convenient installation and small product change.

[0069] For example, as shown in Figure 5 、 Figure 6 and Figure 9 The plurality of arc burning pieces 22 comprises a first arc burning block 201, at least one intermediate arc burning block 203 (for example, Figure 6The shown has two intermediate arc block 203) and second arc block 202. Intermediate arc block 203 is about the first plane symmetric structure, the vertical line of the first plane is along the first direction D1. First arc block 201 and second arc block 202 are respectively identical with one of the two half cylinders in the symmetric structure, and the convex direction of first arc block 201 and second arc block 202 is towards the arc guide 21. For example, in the embodiment of the utility model, the symmetric structure is a cylinder or a similar cylinder, as long as the two half edge structures of the symmetric division each have a circular arc part, and the utility model does not limit that the symmetric structure must be a completely regular cylindrical structure.

[0070] The utility model adopts the arc guide of symmetric design, can make it and the arc guide corresponding on both sides in the first direction can be well matched, simple structure, low in cost, simple process.

[0071] For example, as shown in Figure 6 and Figure 9 Each intermediate arc block 203 is fastened or welded on the first plate 111, such as the end 223 of intermediate arc block 203 away from the conducting bar 30 in the height direction H1 of gas insulated switchgear 100 is connected with the inner wall of the first plate 111. First arc block 201 can be welded (or other connection mode) on the first plate 111, and can also be welded (or other connection mode) on the second plate 112. Second arc block 202 can be welded (or other connection mode) on the first plate 111, and can also be welded (or other connection mode) on the third plate 113. The embodiment of the utility model does not limit this, as long as each arc block 22 is conductively connected with the grounding plate assembly 11 and grounded.

[0072] In the embodiment of the utility model, the structure and shape of each arc block 22 in the plurality of arc blocks 22 are not limited to be exactly the same, as long as the corresponding functions can be completed. For example, the size of each arc block 22 in the utility model, the curvature of the arc, etc. can not be exactly the same, which is not listed here.

[0073] For example, as shown in Figure 5 , Figure 8 and Figure 10 The width L1 of arc guide 22 in the second direction D2 is not less than the width L2 of arc guide segment 211 of arc guide 21 in the second direction D2. Therefore, the arc guide of the utility model can cover the area where the width of the arc guide segment is located, not only can ensure that the arc guide is smoothly guided to the arc guide, but also can ensure that the arc guide is sufficient for the consumption of the arc on it until the arc is extinguished, so as to avoid damaging and breaking the grounding plate assembly, and the arc protection function is stable.

[0074] For example, as shown in Figure 6 , Figure 9 andFigure 10 It is shown that the width L1 of the arc burning piece 22 refers to the extension length of the straight line segment of one end 221 of the arc burning piece 22 in the second direction D2. Of course, this is merely exemplary and is not a limitation of the present application, which can be determined according to the shape of the arc burning piece, as long as the width of the two satisfies the condition of ensuring smooth ignition and the arc burning piece as a sacrificial material can withstand arc ablation, which is not exhaustively described here.

[0075] It should be noted that the drawings of the embodiments of the present application only involve the structures involved in the embodiments of the present application, and other structures can be referred to the usual design. It should be understood that the above description is intended to illustrate and not to limit. For example, the above embodiments (and / or aspects thereof) can be used in combination with each other. In addition, many modifications can be made to adapt the teachings of the present application to specific situations or materials without departing from the scope of the present application. The functions or performances of various elements or modules described herein are only for illustration and are not limiting, but are merely exemplary embodiments. After reading the above description, many other embodiments and modifications within the spirit and scope of the claims will be apparent to those skilled in the art. Therefore, the scope of the present application should be determined by referring to the appended claims and the full scope of equivalents given to these claims.

Claims

1. A gas insulated switchgear (100), characterized in that, The gas tank compartment (10) is provided with a grounding plate assembly (11) therein; At least one conductive row (30) extends into the gas tank compartment (10); An arc striking piece (22) is located in the gas tank compartment (10), the arc striking piece (22) is connected with the grounding plate assembly (11) and the arc striking piece (22) is grounded, and the arc striking piece (22) is arranged to protrude inwardly relative to the grounding plate assembly (11); An arc striking piece (21) is located in the gas tank compartment (10), the arc striking piece (21) is electrically connected with the conductive row (30), the arc striking piece (21) is arranged in a gap with the arc striking piece (22), and the arc striking piece (21) is configured to strike an arc to the arc striking piece (22).

2. The gas insulated switchgear (100) of claim 1, wherein The at least one conductive row (30) includes a plurality of phase conductive rows (30) arranged in a first direction (D1); The gas insulated switchgear (100) includes at least one arc striking piece (21), each arc striking piece (21) is electrically connected with a corresponding phase conductive row (30) of the plurality of phase conductive rows (30); The gas insulated switchgear (100) includes a plurality of arc striking pieces (22), each arc striking piece (21) is arranged between a corresponding adjacent two arc striking pieces (22) of the plurality of arc striking pieces (22) in the first direction (D1).

3. The gas insulated switchgear (100) of claim 2, wherein The plurality of phase conductive rows (30) are M phase conductive rows (30), and at least one arc striking piece (21) is M arc striking pieces (21), the M arc striking pieces (21) correspond to the M phase conductive rows (30) one by one, and M is an integer greater than 1; The plurality of arc striking pieces (22) are N arc striking pieces (22), N = M + 1, and N is an integer. Further comprising a wiring bushing (40) and a conductive connecting piece (31), wherein 4. The gas insulated switchgear (100) according to any one of claims 1 to 3, characterized in that The conductive row (30) is connected with one end of the wiring bushing (40) in the gas tank compartment (10) through the conductive connecting piece (31).

5. The gas insulated switchgear (100) of claim 4, wherein The arc striking piece (21) is electrically connected with the conductive row (30) via the conductive connecting piece (31), and the arc striking piece (21) extends from the conductive connecting piece (31) towards the arc striking piece (22).

6. The gas insulated switchgear (100) of claim 5, wherein The minimum distance between the arc striking piece (21) and the arc striking piece (22) is less than the minimum distance between the arc striking piece (21) and the grounding plate assembly (11), and / or the minimum distance between the arc striking piece (21) and the arc striking piece (22) is less than the minimum distance between the conductive connecting piece (31) and the grounding plate assembly (11).

7. The gas insulated switchgear (100) of claim 2, wherein ​ The arc burning piece (22) is a protrusion protruding inward from the ground plate assembly (11), and a surface of the protrusion includes a curved portion which is an arc surface with curvature.

8. The gas insulated switchgear (100) according to claim 7, characterized in that, An end of the arc burning piece (22) close to the conducting bar (30) in the height direction (H1) of the gas insulated switchgear (100) is in a circular arc shape, and / or, Two ends (222a, 222b) of the arc burning piece (22) in a second direction (D2) are in a circular arc shape, wherein the second direction (D2) is perpendicular to the first direction (D1) and perpendicular to the height direction (H1) of the gas insulated switchgear (100).

9. The gas insulated switchgear (100) according to claim 2, characterized in that, The arc striking piece (21) includes an arc striking segment (211) extending along the first direction (D1), the arc striking segment (211) includes a first end (211a) and a second end (211b) opposite to each other along the first direction (D1), and the first end (211a) and / or the second end (211b) of the arc striking segment (211) is in a circular arc shape, and a protruding direction of the circular arc shape is towards the arc burning piece (22).

10. The gas insulated switchgear (100) according to claim 9, characterized in that, The arc striking piece (21) further includes a connecting segment (212) connected to one end of the arc striking segment (211) in the first direction (D1) and extending along the height direction (H1) of the gas insulated switchgear (100) so that the arc striking piece (21) is in an L shape, and the arc striking segment (211) is electrically connected to the conducting bar (30) via the connecting segment (212).

11. The gas insulated switchgear (100) according to claim 9, characterized in that, A width of the arc burning piece (22) in a second direction (D2) is not less than a width of the arc striking segment (211) in the second direction (D2), wherein the second direction (D2) is perpendicular to the first direction (D1) and perpendicular to the height direction (H1) of the gas insulated switchgear (100).

12. The gas insulated switchgear (100) according to claim 2, characterized in that, A plurality of the arc burning pieces (22) includes a first arc burning block (201), at least one intermediate arc burning block (203) and a second arc burning block (202) arranged in sequence along the first direction (D1), The intermediate arc burning block (203) is a symmetric structure symmetrical about a first plane, a perpendicular line of the first plane is along the first direction (D1), The first arc burning block (201) and the second arc burning block (202) are respectively identical to one of two half-cylinders in the symmetric structure, and a protruding direction of the first arc burning block (201) and the second arc burning block (202) is towards the arc striking piece (21).

13. The gas insulated switchgear (100) as claimed in claim 1, characterized in that, the arcing member (22) is made of metal, the arcing member (21) is made of metal, and the metal includes an iron material.

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