CN109148204B - Gas insulated totally-enclosed combined electrical apparatus and three-station isolation grounding switch thereof - Google Patents
Gas insulated totally-enclosed combined electrical apparatus and three-station isolation grounding switch thereof Download PDFInfo
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- CN109148204B CN109148204B CN201710501784.XA CN201710501784A CN109148204B CN 109148204 B CN109148204 B CN 109148204B CN 201710501784 A CN201710501784 A CN 201710501784A CN 109148204 B CN109148204 B CN 109148204B
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- side supporting
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- 238000002955 isolation Methods 0.000 title claims abstract description 102
- 230000003068 static effect Effects 0.000 claims abstract description 81
- 239000004020 conductor Substances 0.000 claims abstract description 66
- 238000009413 insulation Methods 0.000 claims description 13
- 241000208199 Buxus sempervirens Species 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/023—Base and stationary contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
- H01H31/026—Movable parts and contacts mounted thereon
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- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to a gas insulated totally-enclosed combined electrical appliance and a three-station isolating and grounding switch thereof, wherein the three-station isolating and grounding switch comprises a shell, an isolating static contact, a middle moving contact and a grounding static contact are sequentially arranged in the shell along the axial direction, the shell comprises a straight cylinder body and insulating basins arranged at two ends of the straight cylinder body, the isolating static contact is arranged on the insulating basin at one end through a static side supporting conductor, the middle moving contact is arranged on the insulating basin at the other end through a moving side supporting conductor, and the grounding static contact is arranged on the cylinder wall of the straight cylinder body in an insulated manner. The structure of this casing is fairly simple, and casing processing is convenient, need not set up the port in addition, has improved the intensity of casing, and such arrangement makes the unit mount more convenient moreover, and is favorable to three station isolation earthing switch's whole miniaturized design.
Description
Technical Field
The invention belongs to the field of high-voltage transformer substations, and particularly relates to a gas insulated totally-enclosed combined electrical appliance and a three-station isolating grounding switch thereof.
Background
GIS (gas insulated fully enclosed switchgear) was introduced into our country from the last 80 th century and is now widely used in the field of high voltage substations. With the improvement of the knowledge of designers on the electric power system, higher requirements are put forward on stable power grid environment and convenience of maintenance, for example, an isolation fracture, an earthing device and the like are added in front of a lightning arrester and a voltage transformer, and a linear type three-station isolation earthing switch is produced. The 110kV GIS with relatively low voltage level is mostly used in urban and underground substations, the arrangement space is very limited, and the arrangement of the whole GIS is required to be very compact and even developed into a double-layer arrangement form. How to meet the electrical performance requirement and save space, miniaturization, simplification and low cost is an important subject of development and design of various GIS manufacturers.
Present three-station isolation earthing switch's structure, chinese utility model discloses a three-station isolation earthing switch as authorizing the bulletin number CN 203966948U, it is single-phase including three isolation earthing switch, each isolation earthing switch is single-phase all include the axis along the cylindric casing that left right direction extended to with set up in the inside ground connection static contact of casing, middle moving contact and isolation static contact, the isolation static contact sets up on the insulating basin of casing one end, the ground connection static contact sets up on the housing flange of the casing other end, radially be provided with another basin formula insulator on the section of thick bamboo wall of casing, middle moving contact sets up on this basin formula insulator. The application publication number is CN 106611675A, and the invention discloses a compact three-position isolation grounding switch which is of a three-phase common-box structure and comprises a shell, wherein the left end and the right end of the shell are respectively provided with an insulation basin, the lower end of the shell is also provided with an insulation basin, a moving contact is arranged on the insulation basin at the lower end through a moving side conductor, and an isolation static contact is arranged on the insulation basins at the left end and the right end through a static side conductor. More three station isolation earthing switch's barrel opening leads to the structure complicated, and casing intensity reduces, and the insulating basin all needs to be connected to the barrel opening part, leads to casing processing inconvenient, and three station isolation earthing switch wholly assembles inconveniently.
Disclosure of Invention
The invention aims to provide a three-station isolating grounding switch which is convenient to process and install; meanwhile, the invention also aims to provide a gas insulated totally-enclosed combined electrical appliance using the three-station isolating grounding switch.
In order to achieve the purpose, the technical scheme of the three-position isolating grounding switch is as follows: the utility model provides a three-station isolation earthing switch, includes the casing, has set gradually along axial direction in the casing and has kept apart static contact, middle moving contact and ground connection static contact, the casing includes straight barrel and sets up in the insulating basin at straight barrel both ends, keeps apart the static contact and sets up on the insulating basin of one end through quiet side supporting conductor, and middle moving contact sets up on the insulating basin of the other end through moving side supporting conductor, and the ground connection static contact is insulating to be set up on the section of thick bamboo wall of straight barrel.
And an observation window corresponding to the isolation static contact is arranged on the cylinder wall of the straight cylinder body.
The three-station isolation grounding switch is of a three-phase common-box structure and comprises three isolation switches which are single-phase, each isolation grounding switch comprises an isolation static contact, a middle moving contact and a grounding static contact, the isolation static contacts of the isolation grounding switches are arranged on the static side supporting conductor in parallel at intervals, and the middle moving contacts of the isolation grounding switches are arranged on the moving side supporting conductor in parallel at intervals.
The static side supporting conductor and the movable side supporting conductor respectively comprise three branch conductors, the branch conductors on the static side supporting conductor and the branch conductors on the movable side supporting conductor are arranged in pairs in an opposite mode, and the single-phase isolation static contact and the middle moving contact of each isolation grounding switch are correspondingly arranged on the branch conductors arranged in pairs in an opposite mode.
An operating mechanism is arranged outside the shell, a three-phase linkage rod is arranged between the operating mechanism and each single-phase middle moving contact of the isolation grounding switch, three gears are arranged on the three-phase linkage rod, and a rack which is meshed with the corresponding gear is arranged on each middle moving contact.
The invention relates to a gas insulated totally-enclosed combined electrical apparatus, which adopts the technical scheme that: the utility model provides a totally closed combined electrical apparatus of gas insulation, includes three stations and keeps apart earthing switch, and three stations keep apart earthing switch includes the casing, has set gradually along axial direction in the casing and has kept apart static contact, middle moving contact and ground contact, the casing includes straight barrel and sets up in the insulating basin at straight barrel both ends, keeps apart the static contact and sets up on the insulating basin of one end through quiet side support conductor, and middle moving contact sets up on the insulating basin of the other end through moving side support conductor, and ground contact is insulating to be set up on the section of thick bamboo wall of straight barrel.
And an observation window corresponding to the isolation static contact is arranged on the cylinder wall of the straight cylinder body.
The three-station isolation grounding switch is of a three-phase common-box structure and comprises three isolation switches which are single-phase, each isolation grounding switch comprises an isolation static contact, a middle moving contact and a grounding static contact, the isolation static contacts of the isolation grounding switches are arranged on the static side supporting conductor in parallel at intervals, and the middle moving contacts of the isolation grounding switches are arranged on the moving side supporting conductor in parallel at intervals.
The static side supporting conductor and the movable side supporting conductor respectively comprise three branch conductors, the branch conductors on the static side supporting conductor and the branch conductors on the movable side supporting conductor are arranged in pairs in an opposite mode, and the single-phase isolation static contact and the middle moving contact of each isolation grounding switch are correspondingly arranged on the branch conductors arranged in pairs in an opposite mode.
An operating mechanism is arranged outside the shell, a three-phase linkage rod is arranged between the operating mechanism and each single-phase middle moving contact of the isolation grounding switch, three gears are arranged on the three-phase linkage rod, and a rack which is meshed with the corresponding gear is arranged on each middle moving contact.
The invention has the beneficial effects that: the shell comprises a straight barrel, the isolation static contact and the middle moving contact are respectively arranged on the insulation basins at two ends of the straight barrel, the grounding static contact is arranged on the barrel wall of the straight barrel, the structure of the shell is simpler, the shell is convenient to process, a port does not need to be additionally arranged, the strength of the shell is improved, the integral installation is more convenient due to the arrangement mode, and the integral miniaturization design of the three-station isolation grounding switch is facilitated.
Furthermore, an observation window is arranged on the wall of the straight cylinder body, the installation state of the internal isolation static contact can be checked, and the opening and closing states of the middle moving contact and the isolation static contact detect whether the opening and closing are in place.
Drawings
Fig. 1 is a schematic overall structure diagram of a first embodiment of a three-position isolation grounding switch according to the present invention;
FIG. 2 is a right side view of bitmap 1;
FIG. 3 is a schematic diagram of the internal structure of a three-position isolating grounding switch according to the present invention;
FIG. 4 is a cross-sectional view at A-A of FIG. 3;
FIG. 5 is a schematic structural diagram of a three-position isolation grounding switch at a conducting position;
FIG. 6 is a schematic structural view of a three-position isolation grounding switch in an isolation position;
fig. 7 is a schematic structural diagram of the three-position isolating and grounding switch in a grounded state.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
The first embodiment of the three-position isolation grounding switch disclosed by the invention comprises a shell, as shown in fig. 1 to 7, wherein the shell comprises a straight cylinder body 1, and a first insulation basin 2 and a second insulation basin 3 which are arranged at two ends of the straight cylinder body 1, the three-position isolation grounding switch is of a three-phase common-box structure, the three-position isolation grounding switch comprises three isolation grounding switch single phases which are arranged in the shell, and each isolation grounding switch single phase comprises an isolation static contact 7, a middle moving contact 6 and a grounding static contact 8 which are sequentially arranged along the axial direction of the straight cylinder body 1. The connecting flanges are welded at the two ends of the straight cylinder body 1 and used for installing corresponding insulating basins, the two ends of the straight cylinder body 1 can be connected with the GIS bus, the straight cylinder body can be used for isolating ports in a main bus and can also be used for installing a lightning arrester and a voltage transformer, and the requirements of simplifying the structure and optimizing the arrangement are met.
Be provided with quiet side support conductor 12 on the first insulation basin 2 of straight barrel 1 one end, be provided with on the second insulation basin 3 of the straight barrel 1 other end and move side support conductor 13, quiet side support conductor 12 all includes three branch conductor (14, 15) with moving side support conductor 13, branch conductor 14 on the quiet side support conductor 12 sets up with moving side support conductor 13 on 15 two liang of oppositions of branch conductor, each keeps apart single-phase isolation static contact 7 of earthing switch and middle moving contact 6 correspondence and sets up on two liang of oppositions of branch conductor that set up, middle moving contact 6 horizontal slip and conductive connection are on moving side support conductor 13's corresponding branch conductor 15. The straight cylinder body 1 is formed by welding aluminum alloy plates with the thickness of 10mm, the observation window 5 corresponding to the isolation static contact 7 is arranged on the upper side cylinder wall, the observation window 5 can be used for checking the installation state of the internal isolation static contact 7, and the opening and closing states of the middle moving contact 6 and the isolation static contact 7 detect whether the opening and closing are in place, so that problems can be effectively found in advance, and equipment is prevented from being broken down. The grounding static contact 8 is arranged on the wall of the straight cylinder body 1 through an insulating plate 10, so that the grounding static contact 8 is insulated from the shell, and the grounding static contact 8 is provided with an outgoing terminal 16 which extends out of the shell and is convenient for connection of measuring equipment, so that the measurement of the resistance of a main loop and the like are facilitated. When the device is in operation, the tapping terminal 16 is connected to the shunt bar 11 for grounding.
An operating mechanism 4 is arranged on the outer side of the shell, an insulated three-phase linkage rod 9 is arranged between the operating mechanism 4 and each single-phase middle moving contact 6 of the isolation grounding switch, three gears are arranged on the three-phase linkage rod 9, and a rack which is used for being meshed with the gears is arranged on each middle moving contact 6. The single-phase middle moving contacts 6 of the three isolating and grounding switches are linked, and the action consistency of the three middle moving contacts 6 is ensured. The shell is provided with an isolation indicating device for indicating the working state of the isolation static contact and a ground indicating device for indicating the working state of the ground static contact, when the intermediate moving contact 6 is in contact with the isolation static contact 7, namely the three-station isolation ground switch is in a conducting position, the isolation indicating device is in an 'ON' state, when the two ends of the intermediate moving contact 6 are not in contact with the isolation static contact 7 and the ground static contact 8, namely the three-station isolation ground switch is in an isolation position, the isolation indicating device is in an 'OFF' state, and when the intermediate moving contact 6 is in contact with the ground static contact 8, namely the three-station isolation ground switch is in a grounding position, the ground indicating device is in an 'ON' state.
The second embodiment of the three-position isolating grounding switch is different from the first embodiment in that an observation window is not arranged.
The third embodiment of the three-position isolation grounding switch is different from the first embodiment in that only one three-position isolation grounding switch single phase is arranged in the shell.
Claims (8)
1. The utility model provides a three-station isolation grounding switch, includes the casing, has set gradually isolation static contact, middle moving contact and ground connection static contact, its characterized in that along axial direction in the casing: the shell comprises a straight cylinder body and insulating basins arranged at the two axial ends of the straight cylinder body, and connecting flanges are welded at the two axial ends of the straight cylinder body and used for installing the corresponding insulating basins; the isolation static contact is arranged on the insulating basin at one end through the static side supporting conductor, the middle moving contact is arranged on the insulating basin at the other end through the moving side supporting conductor, the middle moving contact horizontally slides and is electrically connected to the moving side supporting conductor, the horizontal sliding direction of the middle moving contact is consistent with the axial extension direction of the straight cylinder body, and the grounding static contact is arranged on the upper side cylinder wall of the straight cylinder body in an insulation manner; an observation window corresponding to the isolation static contact is arranged on the upper side cylinder wall of the straight cylinder body, and the observation window can be used for checking the installation state of the internal isolation static contact and the opening and closing state of the middle moving contact and the isolation static contact to detect whether the opening and closing are in place.
2. The three-position isolating grounding switch of claim 1, wherein: the three-station isolation grounding switch is of a three-phase common-box structure and comprises three isolation switch single phases, each isolation grounding switch single phase comprises an isolation static contact, a middle moving contact and a grounding static contact, the isolation static contacts of the isolation grounding switches are arranged on the static side supporting conductor in parallel at intervals, and the middle moving contacts of the isolation grounding switches are arranged on the moving side supporting conductor in parallel at intervals.
3. The three-position isolating grounding switch of claim 2, wherein: the static side supporting conductor and the movable side supporting conductor respectively comprise three branch conductors, the branch conductors on the static side supporting conductor and the branch conductors on the movable side supporting conductor are arranged in pairs in an opposite mode, and the single-phase isolation static contact and the middle moving contact of each isolation grounding switch are correspondingly arranged on the branch conductors arranged in pairs in an opposite mode.
4. The three-position isolating grounding switch of claim 2, wherein: an operating mechanism is arranged outside the shell, a three-phase linkage rod is arranged between the operating mechanism and each single-phase middle moving contact of the isolation grounding switch, three gears are arranged on the three-phase linkage rod, and a rack which is meshed with the corresponding gear is arranged on each middle moving contact.
5. The utility model provides a totally closed combined electrical apparatus of gas insulation, includes three stations isolation earthing switch, and three stations isolation earthing switch includes the casing, has set gradually isolation static contact, middle moving contact and ground contact along axial direction in the casing, its characterized in that: the shell comprises a straight cylinder body and insulating basins arranged at the two axial ends of the straight cylinder body, and connecting flanges are welded at the two axial ends of the straight cylinder body and used for installing the corresponding insulating basins; the isolation static contact is arranged on the insulating basin at one end through the static side supporting conductor, the middle moving contact is arranged on the insulating basin at the other end through the moving side supporting conductor, the middle moving contact horizontally slides and is electrically connected to the moving side supporting conductor, the horizontal sliding direction of the middle moving contact is consistent with the axial extension direction of the straight cylinder body, and the grounding static contact is arranged on the upper side cylinder wall of the straight cylinder body in an insulation manner; an observation window corresponding to the isolation static contact is arranged on the upper side cylinder wall of the straight cylinder body, and the observation window can be used for checking the installation state of the internal isolation static contact and the opening and closing state of the middle moving contact and the isolation static contact to detect whether the opening and closing are in place.
6. The gas insulated fully enclosed switchgear of claim 5, wherein: the three-station isolation grounding switch is of a three-phase common-box structure and comprises three isolation switch single phases, each isolation grounding switch single phase comprises an isolation static contact, a middle moving contact and a grounding static contact, the isolation static contacts of the isolation grounding switches are arranged on the static side supporting conductor in parallel at intervals, and the middle moving contacts of the isolation grounding switches are arranged on the moving side supporting conductor in parallel at intervals.
7. The gas insulated fully enclosed switchgear of claim 6, wherein: the static side supporting conductor and the movable side supporting conductor respectively comprise three branch conductors, the branch conductors on the static side supporting conductor and the branch conductors on the movable side supporting conductor are arranged in pairs in an opposite mode, and the single-phase isolation static contact and the middle moving contact of each isolation grounding switch are correspondingly arranged on the branch conductors arranged in pairs in an opposite mode.
8. The gas insulated fully enclosed switchgear of claim 6, wherein: an operating mechanism is arranged outside the shell, a three-phase linkage rod is arranged between the operating mechanism and each single-phase middle moving contact of the isolation grounding switch, three gears are arranged on the three-phase linkage rod, and a rack which is meshed with the corresponding gear is arranged on each middle moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710501784.XA CN109148204B (en) | 2017-06-27 | 2017-06-27 | Gas insulated totally-enclosed combined electrical apparatus and three-station isolation grounding switch thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710501784.XA CN109148204B (en) | 2017-06-27 | 2017-06-27 | Gas insulated totally-enclosed combined electrical apparatus and three-station isolation grounding switch thereof |
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| CN109148204A CN109148204A (en) | 2019-01-04 |
| CN109148204B true CN109148204B (en) | 2022-06-21 |
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| CN201710501784.XA Active CN109148204B (en) | 2017-06-27 | 2017-06-27 | Gas insulated totally-enclosed combined electrical apparatus and three-station isolation grounding switch thereof |
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| CN109509673B (en) * | 2019-01-10 | 2023-09-12 | 广东阿尔派电力科技股份有限公司 | Novel equiangular displacement three-station double-break isolating switch |
| CN112683508B (en) * | 2020-12-21 | 2022-08-05 | 江苏恒高电气制造有限公司 | Gas insulation transmission line contact life test device |
| CN113917300B (en) * | 2021-10-08 | 2023-06-27 | 江苏安靠智能输电工程科技股份有限公司 | Direct connection device of gas-insulated high-voltage switch and power transformer |
| CN117477417B (en) * | 2023-12-28 | 2024-04-12 | 沈阳华德海泰电器有限公司 | Environment-friendly gas-insulated closed combined electrical apparatus |
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| CN109148204A (en) | 2019-01-04 |
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