CN113824039A - Atmospheric-pressure sealed air insulation ring main unit - Google Patents
Atmospheric-pressure sealed air insulation ring main unit Download PDFInfo
- Publication number
- CN113824039A CN113824039A CN202111276520.1A CN202111276520A CN113824039A CN 113824039 A CN113824039 A CN 113824039A CN 202111276520 A CN202111276520 A CN 202111276520A CN 113824039 A CN113824039 A CN 113824039A
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- sleeve
- switch
- insulating
- cover
- main unit
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- 238000009413 insulation Methods 0.000 title claims abstract description 47
- 238000002955 isolation Methods 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000012780 transparent material Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 description 18
- 239000000470 constituent Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 12
- 230000007613 environmental effect Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a normal-pressure sealed air insulation ring main unit, which comprises a switch chamber; the switch chamber is used for installing a main switch wire inlet and outlet sleeve; the main switch consists of an isolating/grounding switch and a breaker; an insulating cover is arranged between the inner side wall of the switch chamber and the isolating movable knife, and the insulating cover is positioned opposite to the isolating/grounding switch operating shaft; a pressure equalizing cover is arranged at the position of the switch main body assembling nut bolt; A. b, C the joint of the three-phase copper bar and the lower outlet sleeve and the joint of the C-phase copper bar and the lower end of the isolation moving knife are respectively provided with an insulating sleeve. The cabinet body is miniaturized and the insulating capability is improved by improving the insulating structure.
Description
Technical Field
The invention belongs to the technical field of switch cabinets, and particularly relates to a normal-pressure sealed air insulation ring main unit.
Background
With the rapid development of the scale and economy of urban construction in China, higher requirements on the reliability, environmental protection and intellectualization of the power distribution network are provided. At present, domestic existing switch cabinets are mainly divided into air insulation ring main units, SF6 gas insulation ring main units, solid insulation ring main units and environment-friendly gas insulation ring main units. The air insulation ring net cabinet is large in volume; the SF6 gas insulation ring main unit is used most at present, but SF6 is one of main greenhouse gases and has great influence on the environment; the partial discharge index of the solid insulation ring main unit is unstable, the insulation material is difficult to degrade, and the later-stage recovery processing is difficult; environmental protection gas insulation looped netowrk cabinet is small, and no emission harm, but need fill and annotate certain pressure, have gas leakage and lead to insulating ability decline problem. The atmospheric pressure sealed air insulation environmental protection cabinet is the improvement of environmental protection gas insulation looped netowrk cabinet, because the dry air dielectric strength who fills and annotates only 1/3 of SF6, and inflation pressure is only standard atmospheric pressure, consequently, whole cabinet volume is on the large side.
Disclosure of Invention
In order to solve the problems of reduction of insulation capacity caused by air leakage of the environment-friendly gas insulation ring main unit and large volume of the normal-pressure sealed air insulation ring main unit, the invention provides the normal-pressure sealed air insulation ring main unit.
The invention is realized by the following technical scheme:
a normal-pressure sealed air insulation ring main unit comprises a switch chamber;
the switch chamber is used for installing a main switch wire inlet and outlet sleeve;
the main switch consists of an isolating/grounding switch and a breaker;
an insulating cover is arranged between the inner side wall of the switch chamber and the isolating movable knife, and the insulating cover is positioned opposite to the isolating/grounding switch operating shaft;
a pressure equalizing cover is arranged at the position of the switch main body assembling nut bolt;
A. b, C the joint of the three-phase copper bar and the lower outlet sleeve and the joint of the C-phase copper bar and the lower end of the isolation moving knife are respectively provided with an insulating sleeve.
Preferably, the insulating cover is made of PA66+ GF;
the wall thickness of the insulating cover is not less than 6 mm.
Preferably, the insulating cover of the present invention is provided with corrugations on the inside thereof for increasing the creepage distance.
Preferably, an insulating plate is arranged in the middle of the insulating cover;
the insulating plate is made of transparent materials; the thickness of the insulating plate is not less than 4 mm.
Preferably, the pressure equalizing cover is of a sleeve structure, the outer diameter of the pressure equalizing cover is D, the inner diameter of the pressure equalizing cover is D, the thickness of the sleeve is N, the thickness of the end part of the pressure equalizing cover is N, and the diameter of the end part of the pressure equalizing cover is L; and the outer wall of the sleeve is of a full chamfer structure.
Preferably, the pressure equalizing cover of the present invention has an outer diameter D of 38mm, an inner diameter D of 20mm, and a sleeve thickness N of 15.6 mm.
Preferably, the whole insulating sleeve is of an L-shaped structure, and the diameter of the outlet end of the insulating sleeve is larger than that of the inlet end of the insulating sleeve;
the wall thickness of the insulating sleeve is not less than 3 mm.
Preferably, the insulating sleeve of the present invention is made of silicone rubber.
The invention has the following advantages and beneficial effects:
1. the isolating switch provided by the invention has the advantages that through the design of the insulating cover, the insulation capacity between phases and relative ground of the isolating switch is improved, and the volume of the main switch is favorably compressed.
2. According to the circuit breaker, the voltage-sharing cover is designed at the bolt, so that the tip electric field of the bolt is improved, the insulating capability of the high-voltage end of the circuit breaker to the ground is improved, and the volume of a main switch is favorably compressed.
3. According to the invention, the insulating cover is designed at the branch bus, so that the insulating capability of the branch bus to the ground is improved, and the height of the air box is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is an overall schematic view of the ring main unit structure of the present invention.
Fig. 2 is a schematic structural diagram of the main switch of the present invention.
Fig. 3 is a three-view diagram of the structure of the insulating cover.
FIG. 4 is a schematic view of a structure of a voltage equalizing cover.
Fig. 5 is a schematic view of the installation of the insulating sheath.
Fig. 6 is a three-view diagram of the insulating sleeve structure.
Fig. 7 is a schematic view of the assembly of the air box inside the main switch chamber.
Reference numbers and corresponding part names in the drawings:
11-cable chamber, 12-switch chamber, 13-secondary chamber, 14-mechanism chamber, 21-isolation/grounding switch, 22-breaker, 23-voltage-equalizing cover, 24-insulating cover, 241-insulating plate, 242-corrugation, 51-insulating sleeve, 61-isolation/grounding mechanism, 62-grounding interlocking component, 63-grounding operating shaft, 64-isolation operating shaft, 65-breaker operating mechanism, 66-energy storage operating shaft, 67-isolation/grounding rotating shaft, 68-crank arm component and 69-breaker rotating shaft.
Detailed Description
Hereinafter, the term "comprising" or "may include" used in various embodiments of the present invention indicates the presence of the invented function, operation or element, and does not limit the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having" and their derivatives are intended to mean that the specified features, numbers, steps, operations, elements, components, or combinations of the foregoing, are only meant to indicate that a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as first excluding the existence of, or adding to the possibility of, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the invention, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B, or may include both a and B.
Expressions (such as "first", "second", and the like) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements described. The foregoing description is for the purpose of distinguishing one element from another. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. In contrast, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
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 examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
To environmental protection gas insulation looped netowrk cabinet gas leakage lead to insulating ability decline, the big scheduling problem of ordinary pressure sealed air insulation looped netowrk cabinet, this embodiment provides an ordinary pressure sealed air insulation looped netowrk cabinet, and this embodiment specifically explains it from two aspects of structure and working method:
(1) structure of the product
The atmospheric-pressure sealed air insulation ring main unit of the embodiment mainly comprises four parts: a cable chamber 11, a switch chamber 12, a secondary chamber 13, and a mechanism chamber 14, as shown in fig. 1.
The cable chamber 11 is used for installing a current transformer and other parts;
the switch chamber 12 is used for installing a main switch (a circuit breaker and an isolation grounding switch) in-out line sleeve;
the secondary chamber 13 is used for installing control, indication and protection devices;
the mechanism chamber 14 is used for mounting a spring-operated mechanism.
As shown in fig. 2, the main switch is mainly composed of two parts: an isolation/grounding switch 21 and a circuit breaker 22.
The key component of the circuit breaker 22 is a vacuum arc-extinguishing chamber, and has excellent opening and closing performance;
the isolating/grounding switch 21 is a three-position switch.
The isolation moves the sword and is weaker with the lateral wall dielectric strength of switch chamber 12, therefore, this embodiment can effectively solve dielectric strength's problem through installing insulating boot 24 additional.
The insulation cover 24 of the embodiment is arranged on the side of the isolation/grounding switch 21 (opposite to the operation shaft of the isolation/grounding switch 21), the insulation cover 24 is made of PA66+ GF material, and the wall thickness is not less than 6 mm; meanwhile, the inner side of the insulating cover 24 is provided with the ripples 242, so that the creepage distance is increased, and the insulating property between the isolation moving blade and the grounding contact is enhanced to a greater extent; the insulation performance of the movable knife and the side wall of the switch chamber is required to be considered while the insulation performance of the movable knife and the side wall of the switch chamber is required to be kept apart, the insulation plate 241 is arranged in the middle of the insulation cover 24, the insulation plate 241 is made of transparent PC, the thickness of the insulation plate is not smaller than 4mm, the insulation strength between phases is guaranteed, and the observation of the isolation/grounding state is not influenced. The insulating cover 24 of the embodiment is processed into a three-phase integrated structure, so that the installation is convenient and the three-phase consistency can be better ensured compared with a single-phase structure, as shown in fig. 3.
The insulation performance between the phases a and C at the high voltage side of the vacuum circuit breaker 22 and the switch body assembly nut and bolt (ground) is insufficient, so the present embodiment is provided with the voltage equalizing cover 23 at this point.
The voltage-sharing cover 23 of this embodiment is disposed at the position of the switch main body where the nut and the bolt are assembled, the voltage-sharing cover 23 is integrally of a sleeve structure, the outer diameter of the voltage-sharing cover is D, the inner diameter of the voltage-sharing cover is D, the thickness of the voltage-sharing cover is N, the outer wall of the sleeve is of a nearly full chamfer structure, the thickness of the end portion of the voltage-sharing cover is M, and the aperture of the end portion of the voltage-sharing cover is L.
The assembled nut adopts a 1-type hexagon nut M8 specification, the bolt adopts an inner hexagon socket head cap screw M8 specification, and according to the overall dimensions of the bolt and the nut, the optimal overall dimension of the pressure equalizing cover 23 is obtained through analysis and calculation: an outer diameter of 38mm and an inner diameter of 20mm, which is compatible with a hexagonal socket insertion, a thickness of 15.6mm, and an outer portion near the full radius R8, as shown in fig. 4, in another preferred embodiment, other outer dimensions, such as a pressure equalization housing with an outer diameter of 32mm and an inner diameter of 15mm, may be used.
Because the sleeve pipe conductor is close to the gas tank distance, can't satisfy the insulating requirement, consequently, this embodiment strengthens insulating ability through design insulating cover 51.
As shown in fig. 5, in this embodiment, an insulating sleeve 51 is respectively disposed at the connection between the ABC three-phase copper bar and the lower outlet sleeve and at the connection between the C-phase copper bar and the lower end of the isolated moving blade.
According to the connection mode of the branch bus and the sleeve, the insulating sleeve 51 is designed to be L-shaped, as shown in FIG. 6, the inner diameter of the inlet end of the insulating sleeve 51 is P2, the outer diameter of the inlet end is P1, the centerline distance from the inlet end to the outlet end is S, the width of the insulating sleeve 51 is P3, the outer diameter of the outlet end is d2, and the inner diameter of the outlet end is d 1; and the diameter of the outlet end of the insulating sleeve 51 is larger than that of the inlet end; the insulation sleeve 51 is made of silicon rubber, insulation experiments of 75Kv are required to be carried out on the switch equipment according to the condition that the dielectric strength of the silicon rubber is 18-36Kv/mm, and therefore the minimum design size of the wall thickness of the insulation sleeve is 3 mm. The insulating sleeve 51 is arranged between the lower outgoing line sleeve and the branch bus, the end face diameter of the end of the lower outgoing line sleeve is 47mm, the insulating sleeve 51 and the lower outgoing line sleeve need to be fastened to prevent falling off when the insulating sleeve 51 is arranged, and the diameter (inner diameter) of the outlet end of the insulating sleeve 51 is designed to be 43-45 mm; the other end of the insulating sleeve 51 penetrates through the branch bus, a bolt hole needs to be flattened at the top end of the branch bus, the diameter of the top end of the branch bus is larger than the diameter of the branch bus, and the diameter of the selected branch bus is 20mm, so that the diameter of the opening end of the insulating sleeve is designed to be 22-23mm, the holding force between the insulating sleeve 51 and the branch bus is ensured, and the insulating sleeve 51 is convenient to mount. Branch generating line and lower wire casing adopt M12 hexagon socket head cap bolt, minimum distance between bolt and the gas tank is 88mm and minimum distance between branch generating line and the gas tank is 83mm, according to the electric field analysis after and install the pressure-equalizing cap additional outward, the pressure-equalizing cap radius is 20mm, the whole height of pressure-equalizing cap is 34.8mm, after installing the pressure-equalizing cap, the pressure-equalizing cap is 50mm to lower wire casing terminal surface distance, insulating cover 51 whole end degree of depth design is 51 mm. The insulating sheath 51 dimension M is designed according to the branch bus bar structure.
(2) Working mode of ring main unit
As shown in fig. 7 (fig. 7 is a diagram of fig. 1 without the cable chamber 11, the secondary chamber 13, and the mechanism chamber 14), the ring main unit of the embodiment specifically includes:
firstly, electrifying operation:
the lower door panel is hung on the hook of the grounding interlocking component 62 and closed; by inserting the handle into ground operating shaft 63 and rotating the handle counterclockwise, the grounding mechanism components in isolation/grounding mechanism 61 drive isolation/grounding shaft 67 clockwise. Meanwhile, the crank arm assembly 68 connected with the isolating/grounding rotating shaft 67 drives the isolating movable knife to rotate clockwise, and the grounding switch is switched off. The pressing plate fixed on the rotating shaft of the grounding mechanism rotates anticlockwise at the same time, and finally presses the grounding interlocking assembly 62 downwards, the grounding switch is in a separated state, the lower door plate cannot be pulled out, and it is guaranteed that an operator cannot open the lower door plate to enter the cable bin when the door plate is not grounded.
When the operating handle is inserted into the isolation operating shaft 63 and rotated clockwise, the isolation mechanism assembly in the isolation/grounding mechanism 61 rotates the isolation/grounding rotating shaft 67 clockwise. Meanwhile, the crank arm assembly 68 connected to the isolating/grounding rotating shaft 67 drives the isolating moving blade to rotate clockwise, the isolating moving blade is connected to the isolating static contact, and the isolating switch is switched on.
The operating handle is inserted into the energy storage operating shaft 66 and rotated clockwise to stretch the energy storage spring on the circuit breaker operating mechanism 65 to a maximum value, at which time the circuit breaker operating mechanism 65 has stored energy. Pressing circuit breaker closing button, circuit breaker operating device 65 drives circuit breaker pivot 69 clockwise rotation, fixes the clockwise rotation of circuit breaker transmission epaxial circuit breaker cam, drives the overtravel spring subassembly and promotes vacuum interrupter's end that moves downwards, and vacuum interrupter's sound contact, the circuit breaker is closed a floodgate promptly. At this time, the entire switching circuit is in a conductive state.
Second, power-off operation
Pressing circuit breaker separating brake button, circuit breaker operating device 65 drives circuit breaker pivot 69 anticlockwise rotation, fixes the anticlockwise rotation of circuit breaker cam on circuit breaker pivot 69, drives the movable end that the spring subassembly of overtravel upwards spurted vacuum interrupter, and vacuum interrupter sound contact separates, circuit breaker separating brake promptly.
By inserting the operating handle into the isolating operating shaft 64 and rotating the handle counterclockwise, the isolating mechanism component of the isolating/grounding mechanism 61 rotates the isolating/grounding rotating shaft 67 counterclockwise. Meanwhile, the crank arm assembly 68 connected with the isolating/grounding rotating shaft 67 drives the isolating movable blade to rotate anticlockwise, the isolating movable blade is separated from the isolating static contact, and the isolating switch is switched off.
When the operating handle is inserted into the ground operating shaft 63 and rotated clockwise, the grounding mechanism component of the spacing/grounding mechanism 61 rotates the spacing/grounding rotating shaft 67 counterclockwise. Meanwhile, the crank arm assembly 68 connected to the isolating/grounding rotating shaft 67 drives the isolating moving blade to rotate counterclockwise, and the grounding switch is switched on. At this time, the pressing plate fixed on the rotating shaft of the grounding mechanism rotates clockwise at the same time, the pressing plate cannot press the grounding interlocking component 62, and the lower door plate can be taken out.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A normal pressure sealing air insulation ring main unit is characterized by comprising a switch chamber (12);
the switch chamber (12) is used for installing a main switch incoming and outgoing line sleeve;
the main switch consists of an isolating/grounding switch (21) and a breaker (22);
an insulating cover (24) is arranged between the inner side wall of the switch chamber (12) and the isolating movable knife, and the insulating cover (24) is positioned opposite to the operating shaft of the isolating/grounding switch (21);
a pressure equalizing cover (23) is arranged at the position of the switch main body where the nut and the bolt are assembled;
A. b, C the connection part of the three-phase copper bar and the lower outlet sleeve and the connection part of the C-phase copper bar and the lower end of the isolation moving knife are respectively provided with an insulating sleeve (51).
2. The atmospheric-pressure sealed air-insulated ring main unit according to claim 1, wherein the insulating cover (24) is made of PA66+ GF material;
the wall thickness of the insulating cover (24) is not less than 6 mm.
3. An atmospheric-pressure sealed air insulation ring main unit according to claim 1, wherein the inside of the insulation cover (24) is provided with corrugations for increasing creepage distance.
4. An atmospheric-pressure sealed air insulation ring main unit according to claim 1, wherein an insulation plate is arranged in the middle of the insulation cover (24);
the insulating plate is made of transparent materials; the thickness of the insulating plate is not less than 4 mm.
5. The atmospheric-pressure sealed air-insulated ring main unit according to claim 1, wherein the pressure equalizing cover (23) is a sleeve structure, and has an outer diameter D, an inner diameter D, a sleeve thickness N, an end thickness N, and an end aperture L; and the outer wall of the sleeve is of a full chamfer structure.
6. The atmospheric-pressure sealed air insulation ring main unit according to claim 5, wherein the outer diameter D of the pressure equalizing cover (23) is 38mm, the inner diameter D is 20mm, and the sleeve thickness N is 15.6 mm.
7. The atmospheric-pressure sealed air insulation ring main unit according to claim 1, wherein the insulation sleeve (51) is of an L-shaped structure as a whole, and the diameter of the outlet end of the insulation sleeve (51) is larger than that of the inlet end;
the wall thickness of the insulating sleeve (51) is not less than 3 mm.
8. The atmospheric-pressure sealed air-insulated ring main unit according to claim 1, wherein the insulating sleeve (51) is made of silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276520.1A CN113824039A (en) | 2021-10-29 | 2021-10-29 | Atmospheric-pressure sealed air insulation ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276520.1A CN113824039A (en) | 2021-10-29 | 2021-10-29 | Atmospheric-pressure sealed air insulation ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113824039A true CN113824039A (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111276520.1A Pending CN113824039A (en) | 2021-10-29 | 2021-10-29 | Atmospheric-pressure sealed air insulation ring main unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN113824039A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117096767A (en) * | 2023-08-08 | 2023-11-21 | 长园电力技术有限公司 | Inflatable high-voltage switch equipment for new energy |
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| US20100200265A1 (en) * | 2007-09-11 | 2010-08-12 | Huo Ying Lu | Connector sheath and cable connector assembly having same |
| CN202153498U (en) * | 2011-08-02 | 2012-02-29 | 湖南丰日电源电气股份有限公司 | Handcart type vacuum breaker for solid insulating high voltage switch cabinet |
| CN203312687U (en) * | 2013-06-28 | 2013-11-27 | 合肥开关厂有限公司 | Flame-proof and intrinsically-safe-type high-voltage vacuum power distribution equipment used for mine |
| CN109119926A (en) * | 2018-10-22 | 2019-01-01 | 长园电力技术有限公司 | A kind of magneto quick-break type environmental protection gas-insulated ring network cabinet |
| CN111952019A (en) * | 2020-08-13 | 2020-11-17 | 许继集团有限公司 | Insulator of built-in capacitor EVT assembly and processing method thereof |
| CN113328370A (en) * | 2021-06-04 | 2021-08-31 | 长园电力技术有限公司 | Upper isolation upper grounding environment-friendly gas insulation ring main unit |
-
2021
- 2021-10-29 CN CN202111276520.1A patent/CN113824039A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100200265A1 (en) * | 2007-09-11 | 2010-08-12 | Huo Ying Lu | Connector sheath and cable connector assembly having same |
| CN202153498U (en) * | 2011-08-02 | 2012-02-29 | 湖南丰日电源电气股份有限公司 | Handcart type vacuum breaker for solid insulating high voltage switch cabinet |
| CN203312687U (en) * | 2013-06-28 | 2013-11-27 | 合肥开关厂有限公司 | Flame-proof and intrinsically-safe-type high-voltage vacuum power distribution equipment used for mine |
| CN109119926A (en) * | 2018-10-22 | 2019-01-01 | 长园电力技术有限公司 | A kind of magneto quick-break type environmental protection gas-insulated ring network cabinet |
| CN111952019A (en) * | 2020-08-13 | 2020-11-17 | 许继集团有限公司 | Insulator of built-in capacitor EVT assembly and processing method thereof |
| CN113328370A (en) * | 2021-06-04 | 2021-08-31 | 长园电力技术有限公司 | Upper isolation upper grounding environment-friendly gas insulation ring main unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117096767A (en) * | 2023-08-08 | 2023-11-21 | 长园电力技术有限公司 | Inflatable high-voltage switch equipment for new energy |
| CN117096767B (en) * | 2023-08-08 | 2024-05-14 | 长园电力技术有限公司 | Inflatable high-voltage switch equipment for new energy |
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