CN110706878A - Voltage transformer removes magnetism protective structure - Google Patents
Voltage transformer removes magnetism protective structure Download PDFInfo
- Publication number
- CN110706878A CN110706878A CN201911103081.7A CN201911103081A CN110706878A CN 110706878 A CN110706878 A CN 110706878A CN 201911103081 A CN201911103081 A CN 201911103081A CN 110706878 A CN110706878 A CN 110706878A
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- China
- Prior art keywords
- voltage transformer
- fixedly connected
- filter screen
- conveying cylinder
- placing box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005389 magnetism Effects 0.000 title claims description 7
- 230000001681 protective effect Effects 0.000 title claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 229910000746 Structural steel Inorganic materials 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000005096 rolling process Methods 0.000 claims 1
- 230000005347 demagnetization Effects 0.000 abstract description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 10
- 235000017491 Bambusa tulda Nutrition 0.000 description 10
- 241001330002 Bambuseae Species 0.000 description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 10
- 239000011425 bamboo Substances 0.000 description 10
- 230000005350 ferromagnetic resonance Effects 0.000 description 5
- 230000005291 magnetic effect Effects 0.000 description 4
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a demagnetization protection structure of a voltage transformer, and relates to the technical field of voltage transformers. The voltage transformer comprises a voltage transformer, two wiring terminals are fixedly connected to the top of the voltage transformer, two C-shaped steels are fixedly connected to the bottom of the voltage transformer, two connecting rods penetrate through the C-shaped steels, the two C-shaped steels are fixedly connected with the other C-shaped steel through the two connecting rods, an angle iron is fixedly connected to the top of the voltage transformer, a driving motor is fixedly connected to the bottom surface of the angle iron, an oil pump is fixedly connected to the top surface of the C-shaped steel on the left side of the voltage transformer, and a spiral pipe is fixedly connected to the peripheral side surface of the voltage transformer.
Description
Technical Field
The invention relates to the technical field of voltage transformers, in particular to a demagnetization protection structure of a voltage transformer.
Background
Voltage transformers are instruments for transforming voltages, similar to transformers. However, the purpose of transforming voltage by the transformer is to conveniently transmit electric energy, so that the capacity is very large, and usually kilovolt-ampere or mega volt-ampere is taken as a calculation unit; the voltage transformer is mainly used for supplying power to a measuring instrument and a relay protection device, measuring the voltage, power and electric energy of a line, or protecting valuable equipment, a motor and a transformer in the line when the line fails, so that the capacity of the voltage transformer is small, generally only a few volt-amperes and dozens of volt-amperes, and the maximum voltage of the voltage transformer does not exceed one thousand volt-amperes.
Ferromagnetic resonance easily occurs to current voltage transformer in the use, and ferromagnetic resonance is a form of power system self-excited oscillation, is because persistence, high amplitude resonance overvoltage phenomenon that ferromagnetic inductance's such as transformer, voltage transformer saturation arouses, and ferromagnetic resonance can make equipment take place seriously to damage, consequently develops a protective structure that can remove magnetism and is the technical problem that technical staff in this field need solve.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a demagnetization protection structure of a voltage transformer, which solves the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a demagnetizing protection structure of a voltage transformer comprises the voltage transformer, wherein the top of the voltage transformer is fixedly connected with two wiring terminals, the bottom of the voltage transformer is fixedly connected with two C-shaped steels, two connecting rods penetrate through the C-shaped steels, the two C-shaped steels are fixedly connected with the other C-shaped steel through the two connecting rods, the top of the voltage transformer is fixedly connected with an angle iron, and the bottom surface of the angle iron is fixedly connected with a driving motor;
and the bottom surface of the spiral pipe is fixedly connected with the left C-shaped steel top surface of the voltage transformer and is positioned on a cooling fan fixedly connected with the left C-shaped steel top surface of the voltage transformer.
Further, spiral pipe bottom intercommunication has the connecting box, the connecting box top surface runs through there are three filter plates, the connecting box is kept away from the voltage transformer lateral wall and is fed through with the oil pump entry, oil pump export intercommunication has the connecting bucket, connecting bucket one end is connected with the cooling tube, cooling tube lateral wall and radiator fan fixed connection, the cooling tube top communicates with the spiral pipe top.
Further, driving motor output shaft fixedly connected with transmission shaft, transmission shaft one end runs through the transport section of thick bamboo and extends to inside the transport section of thick bamboo, the transmission shaft is located the inside one end of transport section of thick bamboo side fixedly connected with helical blade all around, helical blade surface roll connection has the magnet ball, transmission shaft bottom fixedly connected with pivot, the transmission shaft bottom is connected through pivot and transport section of thick bamboo interior bottom rotation.
Further, conveying cylinder top lateral wall intercommunication has gets and puts the box, get and put box lateral wall and spiral pipe top intercommunication, it has the slide bar to run through to get the box top, slide bar top fixedly connected with handle, the slide bar is located to get and puts the outside one end week side cover of box and is equipped with the spring, the spring bottom with get and put box fixed connection, spring top and handle fixed connection.
Furthermore, the slide bar is located and gets inside one end fixedly connected with lift filter screen of putting the box, lift filter screen bottom is rotated through the bearing and is connected with movable filter screen, movable filter screen appearance is the arc structure, movable filter screen week side with get and put box inner surface sliding connection.
The invention has the following beneficial effects:
1. this voltage transformer removes magnetism protective structure rolls around voltage transformer through a plurality of magnet balls along the spiral pipe, and what can be even removes magnetism to voltage transformer, avoids ferromagnetic resonance phenomenon's emergence, prevents that equipment from damaging, has indirectly improved the durability of equipment.
2. This voltage transformer removes magnetism protective structure through endless coolant oil return circuit, can derive the heat that voltage transformer work produced, avoids the heat to gather in voltage transformer is inside, has improved voltage transformer job stabilization nature, simultaneously, gets to put the change magnet ball that the box can be quick, has alleviateed the work load of maintenance and repair.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a demagnetization prevention structure of a voltage transformer according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is a schematic view of the opposite side of FIG. 1;
fig. 5 is a schematic view of the internal structure of the delivery cartridge.
In the drawings, the components represented by the respective reference numerals are listed below:
in the figure: 1-voltage transformer, 2-connecting terminal, 3-C-shaped steel, 4-connecting rod, 5-angle iron, 6-driving motor, 7-conveying cylinder, 8-cooling fan, 9-spiral pipe, 10-cooling pipe, 11-connecting box, 12-filter plate, 13-oil pump, 14-connecting bucket, 15-taking and placing box, 16-lifting filter screen, 17-movable filter screen, 18-sliding rod, 19-handle, 20-transmission shaft, 21-spiral blade, 22-magnet ball and 23-rotating shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a magnetic shielding structure of a voltage transformer comprises a voltage transformer 1, wherein the top of the voltage transformer 1 is fixedly connected with two wiring terminals 2, the bottom of the voltage transformer 1 is fixedly connected with two C-shaped steels 3, two connecting rods 4 penetrate through the inside of the C-shaped steel 3, the two C-shaped steels 3 are fixedly connected with the other C-shaped steel 3 through the two connecting rods 4, the top of the voltage transformer 1 is fixedly connected with an angle iron 5, and the bottom surface of the angle iron 5 is fixedly connected with a JM90-L1-3-P1 type driving motor 6; the C-shaped steel 3 is used for supporting the whole protection structure and the voltage transformer 1, and the wiring terminal 2 is used for being connected with a wire;
the top surface of the C-shaped steel 3 positioned on the left side of the voltage transformer 1 is fixedly connected with a KCB-55 type oil pump 13, the peripheral side surface of the voltage transformer 1 is fixedly connected with a spiral pipe 9, the bottom of the spiral pipe 9 is communicated with a conveying cylinder 7, the bottom surface of the conveying cylinder 7 is fixedly connected with the C-shaped steel 3 positioned on the left side of the voltage transformer 1, and the top surface of the C-shaped steel 3 positioned on the left side of the voltage transformer 1 is fixedly connected with a BFAG-300 type; the cooling fan 8, the driving motor 6 and the oil pump 13 of the invention have no specific designated model, and can be replaced by other devices with equivalent effect, so that the description is omitted, and the cooling fan 8, the driving motor 6 and the oil pump 13 are all powered by the voltage transformer 1.
The bottom end of the spiral tube 9 is communicated with a connecting box 11, three filter plates 12 penetrate through the top surface of the connecting box 11, the side wall, away from the voltage transformer 1, of the connecting box 11 is communicated with an inlet of an oil pump 13, an outlet of the oil pump 13 is communicated with a connecting hopper 14, one end of the connecting hopper 14 is connected with a cooling tube 10, the side wall of the cooling tube 10 is fixedly connected with a cooling fan 8, and the top end of the cooling tube 10 is communicated with the top end of the spiral tube 9; the filter sheet 12 can filter impurities inside the cooling oil on the one hand and can prevent the magnet balls 22 from entering the connection box 11 on the other hand.
Wherein, 6 output shaft fixedly connected with transmission shaft 20 of driving motor, transmission shaft 20 one end runs through the transport section of thick bamboo 7 and extends to inside the transport section of thick bamboo 7, transmission shaft 20 is located the inside one end week side fixedly connected with helical blade 21 of transport section of thick bamboo 7, helical blade 21 surface roll connection has magnet ball 22, 20 bottom fixedly connected with pivots 23 of transmission shaft, the bottom rotates through pivot 23 and transport section of thick bamboo 7 in the transmission shaft 20 bottom is connected, helical blade 21 rotational speed is 500 revolutions per minute, can be rapid carry magnet ball 22 to transport section of thick bamboo 7 top, avoid magnet ball 22 to roll down in the opposite direction.
Wherein, the lateral wall intercommunication of conveying section of thick bamboo 7 top has gets and puts box 15, gets and puts box 15 lateral wall and spiral pipe 9 top intercommunication, gets and puts box 15 top and run through and have slide bar 18, slide bar 18 top fixedly connected with handle 19, slide bar 18 is located to get and puts the outside one end of box 15 and all sides cover and be equipped with the spring, the spring bottom with get and put box 15 fixed connection, spring top and handle 19 fixed connection, the coolant oil can be smoothly through lift filter screen 16 and activity filter screen 17.
Wherein, one end of the slide bar 18 positioned in the taking and placing box 15 is fixedly connected with a lifting filter screen 16, the bottom of the lifting filter screen 16 is rotatably connected with a movable filter screen 17 through a bearing, the movable filter screen 17 is of an arc-shaped structure, and the peripheral side surface of the movable filter screen 17 is in sliding connection with the inner surface of the taking and placing box 15; the movable screen 17 is used to intercept the magnet ball 22.
The specific application of this embodiment is: the driving motor 6 and the oil pump 13 are electrified and started, the output shaft of the driving motor 6 rotates to drive the transmission shaft 20 to rotate, the transmission shaft 20 drives the helical blade 21 to rotate, the helical blade 21 and the inner wall of the conveying cylinder 7 rotate relatively, the magnetic ball 22 is conveyed to move upwards when the helical blade 21 rotates, the magnetic ball 22 enters the pick-and-place box 15 when conveyed to the top of the conveying cylinder 7, then enters the spiral tube 9, the magnet ball 22 rolls downwards along the spiral tube 9 under the action of gravity, when the magnet ball 22 rolls to the bottom of the spiral tube 9, the magnet ball enters the conveying cylinder 7 again, the magnet ball 22 rolls around the voltage transformer 1 continuously, the voltage transformer 1 can be demagnetized uniformly, ferromagnetic resonance can be effectively avoided, and it should be noted that the number of the magnet balls 22 is ten or more, and is increased or decreased appropriately according to the length of the spiral pipe 9 and the conveying capacity of the conveying cylinder 7; the cooling oil is filled in the spiral pipe 9, the cooling oil flows downwards along with the magnet ball 22 after heat exchange with the voltage transformer 1, the cooling oil flows into the bottom of the spiral pipe 9 and then enters the connecting box 11, the cooling oil is filtered by the three layers of filter plates 12, the magnet ball 22 is separated from the cooling oil, the magnet ball 22 is prevented from entering the connecting box 11, the cooling oil in the connecting box 11 is pumped into the connecting hopper 14 by the oil pump 13 and then enters the cooling pipe 10, when the cooling oil flows in the cooling pipe 10, the cooling fan 8 is powered on to start blowing, the cooling oil in the cooling pipe 10 dissipates heat and cools, the cooled cooling oil enters the top of the spiral pipe 9 again, and the cooling oil continuously circulates to continuously dissipate heat of the peripheral side face of the voltage transformer 1; when the magnetic force of the magnet ball 22 is weakened and the magnet ball 22 needs to be replaced, the handle 19 is pressed downwards, the spring is stressed and compressed, the handle 19 pushes the slide rod 18 to move downwards, the slide rod 18 drives the lifting filter screen 16 and the movable filter screen 17 to move downwards, the magnet ball 22 is intercepted by the movable filter screen 17 when passing through the taking and placing box 15, cooling oil can smoothly pass through the lifting filter screen 16 and the movable filter screen 17, the handle 19 is loosened, the handle 19 is pushed to ascend by rebounding of the spring, the slide rod 18, the lifting filter screen 16, the movable filter screen 17 and the magnet ball 22 are driven to ascend by the handle 19, the magnet ball 22 is positioned at an opening at the top of the taking and placing box 15, the magnet ball 22 is taken out manually, a new magnet ball 22 is placed at the top of the lifting filter screen 16, the movable filter screen 17 is rotated manually for a half circle, the handle 19 is pressed again, the new magnet ball 22 enters the bottom of the taking and placing box, the magnet ball 22 is taken, put and replaced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a voltage transformer removes magnetism protective structure, includes voltage transformer (1), two binding post (2) of voltage transformer (1) top fixedly connected with, its characterized in that: the bottom of the voltage transformer (1) is fixedly connected with two C-shaped steels (3), two connecting rods (4) penetrate through the C-shaped steels (3), the two C-shaped steels (3) are fixedly connected with the other C-shaped steel (3) through the two connecting rods (4), the top of the voltage transformer (1) is fixedly connected with an angle iron (5), and the bottom surface of the angle iron (5) is fixedly connected with a driving motor (6);
be located left C shape steel (3) top surface fixedly connected with oil pump (13) of voltage transformer (1), side fixedly connected with spiral pipe (9) all around of voltage transformer (1), spiral pipe (9) bottom intercommunication has a conveying cylinder (7), conveying cylinder (7) bottom surface and left C shape steel (3) fixed connection of voltage transformer (1) are located left C shape steel (3) top surface fixedly connected with radiator fan (8) of voltage transformer (1).
2. The demagnetizing protection structure of the voltage transformer according to claim 1, wherein a connecting box (11) is communicated with the bottom end of the spiral tube (9), three filter plates (12) penetrate through the top surface of the connecting box (11), the connecting box (11) is far away from the side wall of the voltage transformer (1) and is communicated with an inlet of an oil pump (13), an outlet of the oil pump (13) is communicated with a connecting hopper (14), one end of the connecting hopper (14) is connected with a cooling tube (10), the side wall of the cooling tube (10) is fixedly connected with a cooling fan (8), and the top end of the cooling tube (10) is communicated with the top end of the spiral tube (9).
3. The demagnetizing protection structure of a voltage transformer according to claim 1, wherein a transmission shaft (20) is fixedly connected to an output shaft of the driving motor (6), one end of the transmission shaft (20) penetrates through the conveying cylinder (7) and extends into the conveying cylinder (7), a helical blade (21) is fixedly connected to a circumferential side surface of one end of the transmission shaft (20) located inside the conveying cylinder (7), a magnet ball (22) is connected to the surface of the helical blade (21) in a rolling manner, a rotating shaft (23) is fixedly connected to a bottom end of the transmission shaft (20), and the bottom end of the transmission shaft (20) is rotatably connected to a bottom surface inside the conveying cylinder (7) through the rotating shaft (23).
4. The demagnetizing protection structure of a voltage transformer, according to claim 1, wherein a picking and placing box (15) is communicated with a side wall of the top of the conveying cylinder (7), the side wall of the picking and placing box (15) is communicated with the top end of the spiral pipe (9), a sliding rod (18) penetrates through the top of the picking and placing box (15), a handle (19) is fixedly connected to the top end of the sliding rod (18), a spring is sleeved on the side surface of one end, located outside the picking and placing box (15), of the sliding rod (18), the bottom of the spring is fixedly connected with the picking and placing box (15), and the top of the spring is fixedly connected with the handle (19).
5. The voltage transformer demagnetizing protection structure according to claim 4, wherein the sliding rod (18) is located at one end inside the taking and placing box (15) and is fixedly connected with a lifting filter screen (16), the bottom of the lifting filter screen (16) is rotatably connected with a movable filter screen (17) through a bearing, the movable filter screen (17) is of an arc-shaped structure, and the peripheral side surface of the movable filter screen (17) is in sliding connection with the inner surface of the taking and placing box (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911103081.7A CN110706878B (en) | 2019-11-12 | 2019-11-12 | Voltage transformer removes magnetism protective structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911103081.7A CN110706878B (en) | 2019-11-12 | 2019-11-12 | Voltage transformer removes magnetism protective structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110706878A true CN110706878A (en) | 2020-01-17 |
| CN110706878B CN110706878B (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911103081.7A Expired - Fee Related CN110706878B (en) | 2019-11-12 | 2019-11-12 | Voltage transformer removes magnetism protective structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110706878B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04118909A (en) * | 1990-09-08 | 1992-04-20 | Aisan Ind Co Ltd | Ignition coil for internal combustion engine use |
| CN2184972Y (en) * | 1993-07-30 | 1994-12-07 | 毛凤麟 | Resonance clearing device for voltage mutual inductor |
| CN2634617Y (en) * | 2003-02-11 | 2004-08-18 | 倪学锋 | Electronic type capacitive voltage mutual inductor |
| CN201590324U (en) * | 2009-12-01 | 2010-09-22 | 厦门安达兴电气有限公司 | Open circuit protecting members for current transformer |
| US20120182114A1 (en) * | 2011-01-17 | 2012-07-19 | Campbell Graham J | Bathing system transformer device with first and second low voltage output power connections |
| CN106024538A (en) * | 2016-06-27 | 2016-10-12 | 杭州乾龙电器有限公司 | Suit type zero sequence transformer structure |
| CN106269245A (en) * | 2016-10-13 | 2017-01-04 | 天津恺丰义科技有限公司 | A kind of have the rotation classifying screen except magnetic function |
| CN106328361A (en) * | 2016-08-30 | 2017-01-11 | 合肥智博电气有限公司 | Resonation elimination mechanism used in arc-resonation elimination device |
| CN106645858A (en) * | 2017-03-01 | 2017-05-10 | 中山市泰峰电气有限公司 | High-voltage resistor voltage divider for intelligent switchgear of 10KV distribution network |
| CN207572968U (en) * | 2017-12-26 | 2018-07-03 | 保定市迅达电气有限公司 | A kind of extinguishing arc, extinguishing harmony, selecting line and overvoltage protection integration unit |
| CN209088542U (en) * | 2018-12-28 | 2019-07-09 | 西安西电避雷器有限责任公司 | A kind of harmonic elimination apparatus |
-
2019
- 2019-11-12 CN CN201911103081.7A patent/CN110706878B/en not_active Expired - Fee Related
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04118909A (en) * | 1990-09-08 | 1992-04-20 | Aisan Ind Co Ltd | Ignition coil for internal combustion engine use |
| CN2184972Y (en) * | 1993-07-30 | 1994-12-07 | 毛凤麟 | Resonance clearing device for voltage mutual inductor |
| CN2634617Y (en) * | 2003-02-11 | 2004-08-18 | 倪学锋 | Electronic type capacitive voltage mutual inductor |
| CN201590324U (en) * | 2009-12-01 | 2010-09-22 | 厦门安达兴电气有限公司 | Open circuit protecting members for current transformer |
| US20120182114A1 (en) * | 2011-01-17 | 2012-07-19 | Campbell Graham J | Bathing system transformer device with first and second low voltage output power connections |
| CN106024538A (en) * | 2016-06-27 | 2016-10-12 | 杭州乾龙电器有限公司 | Suit type zero sequence transformer structure |
| CN106328361A (en) * | 2016-08-30 | 2017-01-11 | 合肥智博电气有限公司 | Resonation elimination mechanism used in arc-resonation elimination device |
| CN106269245A (en) * | 2016-10-13 | 2017-01-04 | 天津恺丰义科技有限公司 | A kind of have the rotation classifying screen except magnetic function |
| CN106645858A (en) * | 2017-03-01 | 2017-05-10 | 中山市泰峰电气有限公司 | High-voltage resistor voltage divider for intelligent switchgear of 10KV distribution network |
| CN207572968U (en) * | 2017-12-26 | 2018-07-03 | 保定市迅达电气有限公司 | A kind of extinguishing arc, extinguishing harmony, selecting line and overvoltage protection integration unit |
| CN209088542U (en) * | 2018-12-28 | 2019-07-09 | 西安西电避雷器有限责任公司 | A kind of harmonic elimination apparatus |
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| CN110706878B (en) | 2021-06-08 |
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Granted publication date: 20210608 |