CN116683299A - Air insulation switch equipment with 40.5kV equipotential and all-metal armor structure - Google Patents
Air insulation switch equipment with 40.5kV equipotential and all-metal armor structure Download PDFInfo
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- CN116683299A CN116683299A CN202310593729.3A CN202310593729A CN116683299A CN 116683299 A CN116683299 A CN 116683299A CN 202310593729 A CN202310593729 A CN 202310593729A CN 116683299 A CN116683299 A CN 116683299A
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- contact box
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- chamber
- bus
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 37
- 239000002184 metal Substances 0.000 title claims abstract description 37
- 238000009413 insulation Methods 0.000 title claims description 6
- 238000005192 partition Methods 0.000 claims abstract description 33
- 239000012212 insulator Substances 0.000 claims abstract description 11
- 239000011810 insulating material Substances 0.000 claims abstract description 8
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 8
- 230000005684 electric field Effects 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000027418 Wounds and injury Diseases 0.000 abstract 1
- 208000014674 injury Diseases 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- FJMNNXLGOUYVHO-UHFFFAOYSA-N aluminum zinc Chemical compound [Al].[Zn] FJMNNXLGOUYVHO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/14—Shutters or guards for preventing access to contacts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses air-insulated switchgear with a 40.5kV equipotential and all-metal armored structure, which comprises a cabinet body, wherein a small bus chamber, a secondary instrument chamber, a breaker handcart, an upper double-shielding contact box, a lower branch I, a current transformer, a zero sequence current transformer, a counter, a lightning arrester, a lower branch II, a grounding switch, a cable chamber, a lower partition I, a lower partition II, an insulator, an upper branch, a bus chamber, a bus sleeve, a cable chamber pressure release channel, a bus chamber pressure release channel, a breaker chamber pressure release channel and a contact box mounting plate are arranged in the cabinet body. The invention adopts the principle of uniform electric field and equipotential and adopts the pure metal armor structure of the compartment in the cabinet to lead the electric potential between the high-voltage electric body and the air gap of the insulating piece to be the same, thereby fundamentally solving the problem that the gap between the high-voltage conductor of the cabinet and the insulating piece discharges, and the problem that the insulating material adopted between the high-voltage compartments cannot produce effective grounding to cause injury to the human body discharge, and comprehensively guaranteeing the human body safety.
Description
Technical Field
The invention relates to the technical field of manufacturing of metal armoured movable high-voltage switch cabinets, in particular to air insulation switch equipment with a 40.5kV equipotential and all-metal armoured structure.
Background
With the rapid development of 40.5kV air-insulated high-voltage switchgear products in recent years and the increasing urgent need and hope of high-end users for stable, reliable and safe equipment, research into the initial aim of manufacturing high-safety, environment-friendly and small-sized high-voltage switchgear is in line with the needs of the development of the times, and especially, it is urgent to improve and eliminate the design defects existing in some existing old products as soon as possible. A general KYN61-40.5 armoured removable metal-enclosed switchgear (hereinafter referred to as KYN61-40.5 switchgear), wherein K represents armoured, Y represents removable, N represents indoor type, 61 is serial number, and 40.5 is maximum voltage value. The existing KYN61-40.5 switch cabinet electric field design has the defects that: the contact box adopts a single shielding structure, is sequentially pressed, has potential difference in air gaps between a high-voltage electrified body and the insulating part, is extremely easy to generate gap discharge after the insulating part is wetted and polluted after long-time operation, causes breakdown of the insulating part to the ground, causes ground fault and has extremely high potential safety hazard; the compartments of the three high-voltage chambers in the cabinet body are divided by adopting insulating parts (contact boxes), so that the pure metal armoured structure of national standard GB/T3906-2020 cannot be met, the insulating parts and a grounding loop cannot be effectively connected, suspension potential is easy to generate, and the human body is injured.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides air insulation switch equipment with a 40.5kV equipotential and all-metal armoured structure.
In order to solve the technical problems, the invention adopts the following technical scheme: an air-insulated switchgear with a 40.5kV equipotential and all-metal armored structure comprises a cabinet body, wherein a small bus chamber, a secondary instrument chamber, a breaker handcart, an upper double-shielding contact box, a lower branch I, a current transformer, a zero sequence current transformer, a counter, a lightning arrester, a lower branch II, a grounding switch, a cable chamber, a lower partition I, a lower partition II, an insulator, an upper branch, a bus chamber, a bus sleeve, a cable chamber pressure release channel, a bus chamber pressure release channel, a breaker chamber pressure release channel and a contact box mounting plate are arranged in the cabinet body, wherein the structures of the upper double-shielding contact box and the lower double-shielding contact box are the same, and are arranged on the contact box mounting plate in an up-down side-by-side and interval manner; the contact box mounting plate is a bus chamber and breaker chamber partition plate, and a cable chamber and breaker chamber partition plate; the rear ends of the upper double-shielding contact box and the lower double-shielding contact box are movably connected with a circuit breaker handcart, and the circuit breaker handcart is accommodated below the indoor part of the circuit breaker and can slide along a guide rail matched with the circuit breaker handcart; the upper end and the lower end of the upper double-shielding contact box and the lower double-shielding contact box are fixedly connected with the bus chamber and the cable chamber through an upper branch and a lower branch; the cable chamber pressure relief channel, the bus chamber pressure relief channel and the breaker chamber pressure relief channel are all arranged at the top of the cabinet body and are respectively correspondingly communicated with the cable chamber, the bus chamber and the breaker chamber.
Further, the current transformer, the lightning arrester, the zero sequence current transformer and the counter are sequentially arranged at the bottom of the inner cavity of the cable chamber from left to right, and the lower double-shielding contact box is connected with the current transformer through a first lower branch; the grounding switch is arranged on the right side wall of the cable chamber, and the current transformer is connected with the grounding switch through a second lower branch.
Further, the upper double-shielding contact box and the lower double-shielding contact box are of high-voltage equipotential structures and comprise a contact box body, a double-shielding contact box grounding end shielding net, a double-shielding contact box high-voltage end shielding net and a high-voltage electrified body in the contact box, the upper double-shielding contact box and the lower double-shielding contact box are integrally cast, and openings are formed in two ends of the upper double-shielding contact box and the lower double-shielding contact box.
Further, the high-voltage end shielding net of the double-shielding contact box in the upper double-shielding contact box and the high-voltage electrified body in the contact box are at the same potential, and the high-voltage electrified body in the contact box in the lower double-shielding contact box and the high-voltage end shielding net of the double-shielding contact box are at the same potential and at the same two positions.
Further, the inside of the grounding end shielding net of the double-shielding contact box and the inside of the high-voltage end shielding net of the double-shielding contact box in the upper double-shielding contact box are filled with gapless insulating materials through gapless gaps; the high-voltage end shielding net of the double-shielding contact box and the grounding end shielding net of the double-shielding contact box in the lower double-shielding contact box are filled with gapless insulating materials through gapless gaps.
Further, a shielding net of a grounding end of the double-shielding contact box in the upper double-shielding contact box is connected with the mounting plate of the contact box into a whole; and a shielding net of the grounding end of the double-shielding contact box in the lower double-shielding contact box is connected with the mounting plate of the contact box into a whole.
Further, the first lower partition board and the second lower partition board are mutually connected and arranged between the cable chamber and the bus chamber, and are made of all metal; the contact box mounting plate is also made of metal.
Further, three bus bushings arranged in a right-angle layout are arranged on the side wall of the bus chamber and are respectively positioned at the upper left corner, the upper right corner and the lower right corner, an insulator is fixedly arranged on each bus bushing, and the three insulators are respectively connected with an upper double-shielding contact box through an upper branch; the bus sleeve is made of epoxy resin materials, and a sleeve mounting plate arranged on the rear side wall of the bus chamber is made of stainless steel.
Further, a gap is reserved between the outer sides of the upper double-shielding contact box and the lower double-shielding contact box, and the upper center distance and the lower center distance of the upper adjacent contact box and the lower adjacent contact box are 400mm.
Compared with the prior art, the invention has the following beneficial effects: the invention has strong design innovation, unique appearance, compact structure and safe and reliable operation, adopts the principles of uniform electric field and equipotential, adopts a pure metal armor structure of a compartment in the cabinet, ensures that the electric potential between a high-voltage electric body and an air gap of an insulating part is the same, and the gap discharge is not generated when the insulating part is wetted and polluted, thereby fundamentally solving the problem that the gap discharge between a high-voltage conductor of the cabinet and the insulating part and the damage to the human body discharge caused by effective grounding cannot be generated by adopting insulating materials between the high-voltage compartments, meeting the metal armor structure between the high-voltage compartments and the metal grounding function and comprehensively guaranteeing the personal safety of operators.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the switch cabinet of the present invention;
FIG. 2 is an enlarged view of the mating relationship of the upper and lower double shielded contact boxes with the circuit breaker cart in accordance with the present invention;
FIG. 3 is an enlarged view of the upper double shielded contact box of the present invention;
in the figure: 1. small bus room, 2, secondary instrument room, 3, breaker room, 4, breaker handcart, 5, upper double-shielding contact box, 6, lower double-shielding contact box, 7, lower branch I, 8, current transformer, 9, zero sequence current transformer, 10, counter, 11, lightning arrester, 12, lower branch II, 13, grounding switch, 14, cable room, 15, lower partition I, 16, lower partition II, 17, insulator, 18, upper branch, 19, bus room, 20, bus sleeve, 21, cable room pressure relief channel, 22, 23, a breaker chamber pressure relief channel, 24, a contact box mounting plate, 41, a guide rail, 51, an upper double-shielding contact box grounding end shielding net, 52, an upper double-shielding contact box high-voltage end shielding net, 53, an upper contact box inner high-voltage live body, 54, an upper double-shielding contact box body, 61, a lower double-shielding contact box grounding end shielding net, 62, a lower double-shielding contact box high-voltage end shielding net, 63, a lower contact box inner high-voltage live body, 64.
Detailed Description
It should be noted that, in the description of the present invention, the terms such as "upper", "lower", "left", "right", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, but relational terms are merely determined for convenience in describing the structural relationship of the components of the present invention, and do not particularly denote that any one of the components of the present invention must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present invention.
It should be further noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings:
as shown in fig. 1, the air-insulated switchgear with the 40.5kV equipotential and full-metal armored structure comprises a cabinet body, wherein the cabinet body is formed by splicing 2MM aluminum-zinc-coated steel plates after being processed and compositely bent by a numerical control punch, has strong corrosion and oxidation resistance, and has higher mechanical strength than the same steel plates. The inside of the cabinet body is provided with a small bus bar chamber 1, a secondary instrument chamber 2, a breaker chamber 3, a breaker handcart 4, an upper double-shielding contact box 5, a lower double-shielding contact box 6, a lower branch I7, a current transformer 8, a zero sequence current transformer 9, a counter 10, a lightning arrester 11, a lower branch II 12, a grounding switch 13, a cable chamber 14, a lower partition I15, a lower partition II 16, an insulator 17, an upper branch 18, a bus bar chamber 19, a bus bar sleeve 20, a cable chamber pressure relief channel 21, a bus bar chamber pressure relief channel 22, a breaker chamber pressure relief channel 23 and a contact box mounting plate 24; the bus bar chamber 19 and the cable chamber 14 are arranged on the right side of the breaker chamber 3, the cable chamber 14 is arranged below the bus bar chamber 19, the cable chamber 14 and the bus bar chamber 19 are arranged at intervals through a first lower partition plate 15 and a second lower partition plate 16, the first lower partition plate 15 and the second lower partition plate 16 are sequentially connected and are made of all metals, and the partition plates between the bus bar chamber 19 and the cable chamber 14 and the partition plates between the breaker chamber 3 and the cable chamber 14 enable the cable chamber 14, the breaker chamber 3 and the bus bar chamber 19 to be effectively divided into metal; the current transformer 8, the lightning arrester 11, the zero sequence current transformer 9 and the counter 10 are sequentially arranged at the bottom of the inner cavity of the cable chamber 14 from left to right, the grounding switch 13 is fixedly arranged on the right side wall of the cable chamber 14, and the top end of the current transformer 8 is connected with one end of the grounding switch 13 through a second branch 12 under a circuit. The upper double-shielding contact box 5 and the lower double-shielding contact box 6 have the same structure and are formed by integrally casting a contact box body, a double-shielding contact box grounding end shielding net, a double-shielding contact box high-voltage end shielding net and a high-voltage electrified body in the contact box, wherein openings are formed at two ends of the contact box body; the upper double-shielding contact box 5 and the lower double-shielding contact box 6 are arranged on the contact box mounting plate 24 in a vertical side-by-side and interval manner, the contact box mounting plate 24 is a partition plate between the bus chamber 19 and the breaker chamber 3 and a partition plate between the cable chamber 14 and the breaker chamber 3, and the contact box mounting plate 24 is also made of all metals, so that the contact box mounting plate 24 is subjected to effective metal division, and the metal armor structure functions of three high-voltage chambers are met by combining the use of the first lower partition plate 15 and the second lower partition plate 16. As shown in fig. 2, the left ends of the upper double-shielding contact box 5 and the lower double-shielding contact box 6 are movably connected with the circuit breaker handcart 4, and the circuit breaker handcart 4 is accommodated in the lower part of the interior of the circuit breaker chamber 3 and can slide along a guide rail 41 matched with the circuit breaker handcart. The cable chamber pressure relief channel 21, the bus chamber pressure relief channel 22 and the breaker chamber pressure relief channel 23 are all arranged at the top of the cabinet body and are respectively correspondingly communicated with the cable chamber 14, the bus chamber 19 and the breaker chamber 3, and the three pressure relief channels are all connected with the pressure release device.
Three bus bushings 20 which are arranged in a right-angle layout are fixedly arranged on the side wall of the bus chamber 19 through bushing mounting plates, and are respectively positioned at the upper left corner, the upper right corner and the lower right corner; an insulator 17 is fixedly arranged on each bus sleeve 20, and one ends of the three insulators 17 are respectively connected with the upper double-shielding contact box 5 through an upper branch 18 of a circuit; the bus bushing 20 is made of epoxy resin material, and a bushing mounting plate arranged on the side wall of the bus room is made of stainless steel. The lower double-shielding contact box 6 is connected with the top end of a current transformer 8 through a lower branch 7 of the line.
The upper double-shielding contact box 5 and the lower double-shielding contact box 6 are of high-voltage equipotential structures, wherein the high-voltage end shielding net 52 of the upper double-shielding contact box in the upper double-shielding contact box 5 and the high-voltage electrified body 53 in the upper contact box are of the same potential, the high-voltage electrified body 63 in the lower contact box in the lower double-shielding contact box 6 and the high-voltage end shielding net 62 of the lower double-shielding contact box are of the same potential, and the two identical potentials ensure that a gap between the high-voltage end shielding net 52 of the upper double-shielding contact box and the high-voltage electrified body 53 in the upper contact box does not generate potential difference any more to cause a gap discharge accident; also, no gap discharge fault is generated between the high-voltage electrified body 63 in the lower contact box and the high-voltage end shielding net 62 of the lower double-shielding contact box.
Further, as shown in fig. 3, in the upper double-shielded contact box 5, the upper double-shielded contact box ground end shielding net 51 and the upper double-shielded contact box high-voltage end shielding net 52 are filled without gaps through insulating materials without gaps, so that no discharge fault exists; likewise, the inside of the lower double-shielded contact box high-voltage end shielding net 62 and the lower double-shielded contact box grounding end shielding net 61 in the lower double-shielded contact box 6 are filled without gaps through gapless insulating materials, and no discharge fault exists.
The upper double-shielding contact box grounding end shielding net 51 in the upper double-shielding contact box 5 is connected with the contact box mounting plate 24 into a whole; the lower double-shielding contact box grounding end shielding net 61 in the lower double-shielding contact box 6 is connected with the contact box mounting plate 24 into a whole; the problem of floating potential is avoided, and the problem of discharge is avoided.
Furthermore, a gap is reserved between the outer sides of the upper double-shielding contact box 5 and the lower double-shielding contact box 6, and the upper center distance and the lower center distance of the upper adjacent contact box and the lower adjacent contact box are 400mm.
After the contact box is installed in a sleeve mode, the contact box is correspondingly installed on the metal contact box installation plate 24, and the metal armor structure between the high-voltage chambers is completed between the bus bar chamber 19 and the breaker chamber 3, between the bus bar chamber 19 and the cable chamber 14, between the breaker chamber 3 and the cable chamber 14 and the like, the metal is completely split, insulation pieces are not split any more between the compartments, the metal partition plate meets the continuity of grounding, and the protection requirement of equipment on human bodies is improved.
When the breaker or the bus breaks down internally, the internal air pressure of the switch cabinet rises along with the occurrence of electric radian, the metal door plates and the partition plates arranged on the periphery of the breaker chamber 3, the bus chamber 19 and the cable chamber 14 ensure the sealing and strength in the partition chambers, and the pressure release metal plates arranged at the top are automatically opened to communicate with the corresponding pressure release channels to release pressure and exhaust air so as to ensure the safety of operators and the switch cabinet.
Therefore, in the future market development, in some harbours and severe highland alpine environments, along with the intelligent concepts of electric power telemechanical, unattended, less maintenance and the like, the intelligent concepts are increasingly added to electrical equipment facilities, and the electric operation and remote control of a high-voltage switch cabinet are frequently embodied in some engineering applications in the future, so that the design prospect of the invention is wider.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the invention.
Claims (9)
1. An air insulation switchgear of 40.5kV equipotential, full metal armor structure, its characterized in that: the novel high-voltage power supply circuit breaker comprises a cabinet body, wherein a small bus chamber, a secondary instrument chamber, a breaker handcart, an upper double-shielding contact box, a lower branch I, a current transformer, a zero sequence current transformer, a counter, a lightning arrester, a lower branch II, a grounding switch, a cable chamber, a lower partition I, a lower partition II, an insulator, an upper branch, a bus chamber, a bus sleeve, a cable chamber pressure relief channel, a bus chamber pressure relief channel, a breaker chamber pressure relief channel and a contact box mounting plate are arranged in the cabinet body, the upper double-shielding contact box and the lower double-shielding contact box have the same structure and are arranged on the contact box mounting plate in parallel and at intervals from top to bottom; the contact box mounting plate is a bus chamber and breaker chamber partition plate, and a cable chamber and breaker chamber partition plate; the rear ends of the upper double-shielding contact box and the lower double-shielding contact box are movably connected with a circuit breaker handcart, and the circuit breaker handcart is accommodated below the indoor part of the circuit breaker and can slide along a guide rail matched with the circuit breaker handcart; the cable chamber pressure relief channel, the bus chamber pressure relief channel and the breaker chamber pressure relief channel are all arranged at the top of the cabinet body and are respectively correspondingly communicated with the cable chamber, the bus chamber and the breaker chamber.
2. An air insulated switchgear of 40.5kV equipotential, all-metal armoured construction according to claim 1, characterized by: the current transformer, the lightning arrester, the zero sequence current transformer and the counter are sequentially arranged at the bottom of the inner cavity of the cable chamber from left to right, and the lower double-shielding contact box is connected with the current transformer through a first lower branch; the grounding switch is arranged on the right side wall of the cable chamber, and the current transformer is connected with the grounding switch through a second lower branch.
3. An air insulated switchgear of 40.5kV equipotential, all-metal armoured construction according to claim 1, characterized by: the upper double-shielding contact box and the lower double-shielding contact box are of high-voltage equipotential structures and comprise a contact box body, a double-shielding contact box grounding end shielding net, a double-shielding contact box high-voltage end shielding net and a high-voltage electrified body in the contact box, and are integrally cast, and openings are formed in two ends of the contact box body and the double-shielding contact box grounding end shielding net.
4. An air insulated switchgear of 40.5kV equipotential, all-metal armoured construction according to claim 3, characterized by: the high-voltage end shielding net of the double-shielding contact box in the upper double-shielding contact box and the high-voltage electrified body in the contact box are at the same potential, and the high-voltage electrified body in the contact box in the lower double-shielding contact box and the high-voltage end shielding net of the double-shielding contact box are at the same potential and at the same two positions.
5. An air insulated switchgear of 40.5kV equipotential, all-metal armoured construction according to claim 3, characterized by: the inside of a grounding end shielding net of the double-shielding contact box and a high-voltage end shielding net of the double-shielding contact box in the upper double-shielding contact box are filled with gapless insulating materials through gapless gaps; the high-voltage end shielding net of the double-shielding contact box and the grounding end shielding net of the double-shielding contact box in the lower double-shielding contact box are filled with gapless insulating materials through gapless gaps.
6. An air insulated switchgear of 40.5kV equipotential, all-metal armoured construction according to claim 3, characterized by: the double-shielding contact box grounding end shielding net in the upper double-shielding contact box is connected with the contact box mounting plate into a whole; and a shielding net of the grounding end of the double-shielding contact box in the lower double-shielding contact box is connected with the mounting plate of the contact box into a whole.
7. An air insulated switchgear of 40.5kV equipotential, all-metal armoured construction according to claim 1, characterized by: the first lower partition board and the second lower partition board are mutually connected and are arranged between the cable chamber and the bus chamber, and the first lower partition board and the second lower partition board are made of all metal; the contact box mounting plate is also made of metal.
8. An air insulated switchgear of 40.5kV equipotential, all-metal armoured construction according to claim 1, characterized by: three bus bushings arranged in a right-angle layout are arranged on the rear side wall of the bus chamber and are respectively positioned at the upper left corner, the upper right corner and the lower right corner, an insulator is fixedly arranged on each bus bushing, and the three insulators are respectively connected with an upper double-shielding contact box through an upper branch; the bus bushing is made of epoxy resin materials, and a bushing mounting plate arranged on the side wall of the bus chamber is made of stainless steel.
9. An air insulated switchgear of 40.5kV equipotential, all-metal armoured construction according to claim 1, characterized by: and a gap is reserved at the outer side between the upper double-shielding contact box and the lower double-shielding contact box, and the upper center distance and the lower center distance of the upper adjacent contact box and the lower adjacent contact box are 400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310593729.3A CN116683299A (en) | 2023-05-25 | 2023-05-25 | Air insulation switch equipment with 40.5kV equipotential and all-metal armor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310593729.3A CN116683299A (en) | 2023-05-25 | 2023-05-25 | Air insulation switch equipment with 40.5kV equipotential and all-metal armor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116683299A true CN116683299A (en) | 2023-09-01 |
Family
ID=87784628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310593729.3A Pending CN116683299A (en) | 2023-05-25 | 2023-05-25 | Air insulation switch equipment with 40.5kV equipotential and all-metal armor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116683299A (en) |
-
2023
- 2023-05-25 CN CN202310593729.3A patent/CN116683299A/en active Pending
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