CN105006335A - Oil-immersed hollow self-cooled neutral grounding reactor - Google Patents
Oil-immersed hollow self-cooled neutral grounding reactor Download PDFInfo
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- CN105006335A CN105006335A CN201510351042.4A CN201510351042A CN105006335A CN 105006335 A CN105006335 A CN 105006335A CN 201510351042 A CN201510351042 A CN 201510351042A CN 105006335 A CN105006335 A CN 105006335A
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- device body
- pull bar
- body pull
- fuel tank
- feet
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Abstract
The invention relates to an oil-immersed hollow self-cooled neutral grounding reactor comprising a fuel tank and a reactor body. The reactor body comprises a coil, an upper aluminum plate arranged at the upper end of the coil, and a lower aluminum plate arranged at the lower end of the coil. A pressing plate and an end ring are arranged between the upper aluminum plate and the coil. A supporting plate and an end ring are arranged between the lower aluminum plate and the coil. The whole reactor body is connected to the bottom of the fuel tank through foot pads. A tank cover arranged at the upper end of the fuel tank is integrally connected with the reactor body through reactor body pull bars. The reactor body pull bars are electrically connected to the corresponding foot pads. The foot pads are mutually insulated. At least one reactor body pull bar is electrically connected to the upper and lower aluminum plates. One reactor body pull bar of each foot pad is electrically connected to the tank cover. The tank cover is grounded with a single point through the fuel tank. The reactor is skillful in design, low in loss, low in temperature rise, low in partial discharging and low in noise, a phenomenon that the equipment breaks down as short circuit rings occur in the reactor and the reactor is grounded with multiple points is avoided, a grounding system is reliable and is convenient to operate, and the reactor is highly economical and is high in safety and stability.
Description
Technical field
The present invention relates to a kind of electric network protection equipment, be specifically related to a kind of being connected between system and the earth, for the oil-immersed hollow self cool neutral grounding reactor of earth current during restriction system fault.
Background technology
High-voltage shunt reactor adopts star connection; three-phase reactor is in operation and earth fault may occurs road once; now will there is earth current in the neutral point of three-phase reactor; if be connected in series a neutral grounding reactor again at star-star connection neutral point place; alternate and the direct-to-ground capacitance of compensated line; make to be tending towards infinitely great relative to ground impedance, eliminate secondary arc current and indulge component to accelerate the automatic distinguishing of secondary arc current, this time, neutral grounding reactor just served protective effect.And neutral grounding reactor internal structure conventional at present comprises coil, upper aluminium sheet, lower aluminum sheet, supporting plate, end circle, pressing plate, feet, device body pull bar, wherein go up aluminium sheet, lower aluminum sheet, feet, device body pull bar all need ground connection respectively, this earthing mode complex structure, not easily produce and install, and easily produce the problem of multipoint earthing and short-circuited conducting sleeve, cause equipment to produce fault.
Summary of the invention
For the problems referred to above, the invention provides a kind of can avoiding and occur short-circuited conducting sleeve or multipoint earthing because of interiors of products and cause the oil-immersed hollow self cool neutral grounding reactor of equipment fault.1, for solving the problem, the technical scheme that the present invention takes is: a kind of oil-immersed hollow self cool neutral grounding reactor, is characterized in that: comprise fuel tank and be located at the device body in fuel tank; Described device body comprises coil and lays respectively at upper aluminium sheet and the lower aluminum sheet of coil upper and lower side, fill pressing plate between upper aluminium sheet and coil and hold and enclose, supporting plate and end circle is filled between lower aluminum sheet and coil, device body is connected with tank bottoms by feet, and the case lid of fuel tank upper end is connected as a single entity by device body pull bar and device body; Described inner wall of oil tank is provided with aluminum barrel, and aluminum barrel is electrically connected by fixed head and fuel tank tank wall; Described device body pull bar is all electrically connected with corresponding feet, insulate between feet, and wherein at least one device body pull bar and upper aluminium sheet, lower aluminum sheet realize being electrically connected; Each feet all has a device body pull bar and case lid to be electrically connected, and case lid realizes single-point grounding through fuel tank.The end circle at coil two ends, pressing plate and supporting plate all belong to overhang insulation system, its middle-end circle is made up of multilayer, serve the effect that segmentation oil clearance increases dielectric strength, pressing plate and supporting plate are while increasing coil to two ends hardware insulation distance, also clamping served to two ends end circle and force effect to submit, guaranteeing that end circle is fixed.Coil, end circle, pressing plate, upper aluminium sheet, lower aluminum sheet and feet all rely on bolt to fix as a whole by non-magnetic device body pull bar, are device body.Device body is fixed together by device body pull bar and case lid; Device body bottom is seated in tank bottoms by feet.
Described feet comprises the first feet and second feet of mutually insulated, and described device body pull bar comprises the first device body pull bar, the second device body pull bar, the 3rd device body pull bar and the 4th device body pull bar; Wherein, the first device body pull bar and the second device body pull bar and the first feet are electrically connected, and the 3rd device body pull bar and the 4th device body pull bar and the second feet are electrically connected; Be provided with the first insulating part between case lid and the first device body pull bar, the 3rd device body pull bar, case lid and the second device body pull bar, the 4th device body pull bar are electrically connected; Be provided with the second insulating part between upper aluminium sheet and the first device body pull bar, the 3rd device body pull bar, the 4th device body pull bar, upper aluminium sheet and the second device body pull bar are electrically connected; The 3rd insulating part is equipped with between lower aluminum sheet and four device body pull bars; Be provided with the 4th insulating part between lower aluminum sheet and two feets, lower aluminum sheet is electrically connected reliably by connecting line and the first feet; The 5th insulating part is provided with between two feets and fuel tank.Four device body pull bars all by thin nut, high nut, be fastened in feet, two nuts loosen function with the use of possessing, make connection more reliable.Lower aluminum sheet and the first feet are electrically connected, and the first feet is grounded by the second device body pull bar.
Prevent leakage field from entering the structural members such as fuel tank, case lid, feet and produce superheating phenomenon, described aluminum barrel and upper aluminium sheet, lower aluminum sheet form shielding harness.Fuel tank is cylindrical structure, is close to inner wall of oil tank and is furnished with aluminum cylinder as shielding, form whole shielding harness with the aluminium sheet at the upper and lower both ends of coil.
Described coil is simplex winding inner screen continuous winding, and winding protruding head is connected with sleeve pipe by lead-in wire.Coil is continous way end outlet structure, and head end is in top outlet, and according to national standard and technology requirement of invitation for bid, end is divided into third gear in bottom outlet, thus the reactance value realizing equipment has third gear optional.Head end sleeve pipe and three end sleeve pipes are connected with the head end outlet of inside and end outlet respectively.Head end sleeve pipe is connected with the neutral point of system by line, and end sleeve pipe needs to select one to pass through relevant line according to user and is connected with earth mat.Coil has inner bracing strip and paper web, paper web inner placer body skeleton.Head end sleeve pipe is arranged on fuel tank by raising seat, raises seat and is used for raising head end sleeve pipe, strengthens the distance with other inside and outside parts, to meet the insulation distance requirement of inside and outside portion.
The case lid top of described fuel tank is provided with oil conservator.Be provided with oil conservator at reactor top, be connected between it with fuel tank by pipeline, when along with variations in temperature, volume increases and decreases the insulating oil in fuel tank to some extent, oil conservator just serves alimentation, ensure that internal oil pressure is constant.Fuel tank also hangs with the chest that wiring terminal box is used to gather the various secondary line with transfer.For lowering the temperature to reactor body, described fuel tank is connected with gilled radiator by pipe joint.
Structure of the present invention is simple, easy to use, design ingenious, possess that loss is little, temperature rise is low, little, that noise is little good characteristic is put in office, can avoid occurring short-circuited conducting sleeve or multipoint earthing because of interiors of products and causing equipment fault, reliable and the convenient operation of grounding system, has higher economy and security and stability, makes product can safe operation reliably and with long-term.
Accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present invention;
Fig. 2 is external structure front view of the present invention;
Fig. 3 is external structure left view of the present invention;
Fig. 4 is internal ground structure schematic diagram of the present invention;
Fig. 5 is the A-A view of Fig. 4;
Fig. 6 is the first device body pull bar, the 3rd device body pull bar top connection layout;
Fig. 7 is the second device body pull bar top connection layout;
Fig. 8 is the 4th device body pull bar top connection layout;
Fig. 9 is device body pull bar bottom connection layout;
Wherein, 1, case lid, 2, head end tap lead wire, 3, device body pull bar, 3a, first device body pull bar, 3b, second device body pull bar, 3c, 3rd device body pull bar, 3d, 4th device body pull bar, 4, pressing plate, 5, end circle, 6, end tap lead wire, 7, coil, 8, supporting plate, 9, fuel tank, 10, upper aluminium sheet, 11, aluminum barrel, 12, lower aluminum sheet, 13, feet, 13a, first feet, 13b, second feet, 14, oil conservator, 15, head end sleeve pipe, 16, raise seat, 17, end sleeve pipe, 18, gilled radiator, 19 wiring terminal boxes, 20, fixed head, 21, first insulating part, 22, second insulating part, 23, 3rd insulating part, 24, 4th insulating part, 25, 5th insulating part, 26, thin nut, 27, high nut, 28, packing ring, 29, connecting line.
Embodiment
A kind of oil-immersed hollow self cool neutral grounding reactor, comprises fuel tank 9 and is located at the device body in fuel tank; Described device body comprises coil 7 and lays respectively at upper aluminium sheet 10 and the lower aluminum sheet 12 of coil 7 upper and lower side, fill pressing plate 4 between upper aluminium sheet 12 and coil 7 and hold circle 5, fill supporting plate 8 between lower aluminum sheet 12 and coil 7 and hold circle 5, lower aluminum sheet 12 is connected with bottom fuel tank 9 by feet 13, and the case lid 1 of fuel tank 9 upper end is connected as a single entity by device body pull bar 3 and device body; Case lid 1 top of described fuel tank 9 is provided with oil conservator 14.Described fuel tank 9 is connected with gilled radiator 18 by pipe joint.Fuel tank 9 also hangs with wiring terminal box 19 and be used for gathering the various secondary line with transfer.
Described coil 7 is simplex winding inner screen continuous winding, and coil head end is in top outlet, and head end tap lead wire 2 is connected with head end sleeve pipe 15; Coil end is divided into third gear in bottom outlet, and end tap lead wire 6 is connected with three end sleeve pipes 17 respectively; Head end sleeve pipe 15 is arranged on fuel tank 9 by raising seat 16.
Described inner wall of oil tank is provided with aluminum barrel 11, and aluminum barrel 11 is electrically connected by fixed head 20 and fuel tank tank wall and described aluminum barrel 11 and upper aluminium sheet 10, lower aluminum sheet 12 form shielding harness.Described device body pull bar 3 is all electrically connected with feet 13, insulate between feet 13, and one of them device body pull bar 3 is electrically connected with upper aluminium sheet 10, lower aluminum sheet 12, case lid 1, and case lid 1 realizes single-point grounding through fuel tank 9.
Described feet 13 comprises the first feet 13a and the second feet 13b, and described device body pull bar 3 comprises the first device body pull bar 3a, the second device body pull bar 3b, the 3rd device body pull bar 3c and the 4th device body pull bar 3d; Four device body pull bars 3 are all connected with case lid 1, upper aluminium sheet 10, feet 13 by thin nut 26, high nut 27, packing ring 28.Wherein, the first device body pull bar 3a and the second device body pull bar 3b and the first feet 13a is electrically connected, and the 3rd device body pull bar 3c and the 4th device body pull bar 3d and the second feet 13b is electrically connected; Case lid 1 and be provided with the first insulating part 21 between the first device body pull bar 3a, the 3rd device body pull bar 3c, case lid 1 and the second device body pull bar 3b, the 4th device body pull bar 3d are electrically connected; Be provided with the second insulating part 22 between upper aluminium sheet 10 and the first device body pull bar 3a, the 3rd device body pull bar 3c, the 4th device body pull bar 3d, upper aluminium sheet 10 and the second device body pull bar 3b are electrically connected; Be equipped with the 3rd insulating part 23 between lower aluminum sheet 12 and four device body pull bars 3, be provided with the 4th insulating part 24 between lower aluminum sheet 12 and two feets 13, lower aluminum sheet 12 realizes being electrically connected reliably through connecting line 29 and the first feet 13a; The 5th insulating part 25 is provided with between two feets 13 and fuel tank 9.
Claims (6)
1. an oil-immersed hollow self cool neutral grounding reactor, is characterized in that: comprise fuel tank and be located at the device body in fuel tank; Described device body comprises coil and lays respectively at upper aluminium sheet and the lower aluminum sheet of coil upper and lower side, fill pressing plate between upper aluminium sheet and coil and hold and enclose, supporting plate and end circle is filled between lower aluminum sheet and coil, whole device body is connected with tank bottoms by feet, and the case lid of fuel tank upper end is connected as a single entity by device body pull bar and device body; Described inner wall of oil tank is provided with aluminum barrel, and aluminum barrel is electrically connected by fixed head and fuel tank tank wall; Described device body pull bar is all electrically connected with corresponding feet, insulate between feet, and wherein at least one device body pull bar and upper aluminium sheet, lower aluminum sheet realize being electrically connected; Each feet all has a device body pull bar and case lid to be electrically connected, and case lid realizes single-point grounding through fuel tank.
2. oil-immersed hollow self cool neutral grounding reactor according to claim 1, it is characterized in that: described feet comprises the first feet and second feet of mutually insulated, described device body pull bar comprises the first device body pull bar, the second device body pull bar, the 3rd device body pull bar and the 4th device body pull bar; Wherein, the first device body pull bar and the second device body pull bar and the first feet are electrically connected, and the 3rd device body pull bar and the 4th device body pull bar and the second feet are electrically connected; Be provided with the first insulating part between case lid and the first device body pull bar, the 3rd device body pull bar, case lid and the second device body pull bar, the 4th device body pull bar are electrically connected; Be provided with the second insulating part between upper aluminium sheet and the first device body pull bar, the 3rd device body pull bar, the 4th device body pull bar, upper aluminium sheet and the second device body pull bar are electrically connected; The 3rd insulating part is equipped with between lower aluminum sheet and four device body pull bars; Be provided with the 4th insulating part between lower aluminum sheet and two feets, lower aluminum sheet is electrically connected reliably by connecting line and the first feet; The 5th insulating part is provided with between two feets and fuel tank.
3. oil-immersed hollow self cool neutral grounding reactor according to claim 1, is characterized in that: described aluminum barrel and upper aluminium sheet, lower aluminum sheet form shielding harness.
4. oil-immersed hollow self cool neutral grounding reactor according to claim 1, is characterized in that: described coil is simplex winding inner screen continuous winding, and winding protruding head is connected with sleeve pipe by lead-in wire.
5. oil-immersed hollow self cool neutral grounding reactor according to claim 2, is characterized in that: the case lid top of described fuel tank is provided with oil conservator.
6. oil-immersed hollow self cool neutral grounding reactor according to claim 2, is characterized in that: described fuel tank is connected with gilled radiator by pipe joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351042.4A CN105006335B (en) | 2015-06-23 | 2015-06-23 | A kind of oil-immersed hollow self-cooled neutral grounding reactor |
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| CN201510351042.4A CN105006335B (en) | 2015-06-23 | 2015-06-23 | A kind of oil-immersed hollow self-cooled neutral grounding reactor |
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| CN105006335A true CN105006335A (en) | 2015-10-28 |
| CN105006335B CN105006335B (en) | 2017-10-13 |
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| CN201510351042.4A Active CN105006335B (en) | 2015-06-23 | 2015-06-23 | A kind of oil-immersed hollow self-cooled neutral grounding reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890201A (en) * | 2018-09-10 | 2020-03-17 | 特变电工沈阳变压器集团有限公司 | Three-phase shunt reactor lead wire connection structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141111A (en) * | 1984-12-13 | 1986-06-28 | Kansai Electric Power Co Inc:The | Reactor device for neutral grounding |
| CN201681700U (en) * | 2010-01-15 | 2010-12-22 | 中国西电电气股份有限公司 | Iron core grounding structure of parallel reactor |
| CN201838428U (en) * | 2010-08-24 | 2011-05-18 | 江苏盛华电气有限公司 | Oil tank of intermediate-frequency reactor |
| CN201859744U (en) * | 2010-10-27 | 2011-06-08 | 特变电工沈阳变压器集团有限公司 | Return yoke pull rod clamping structure for oil-immersed electric reactor |
| CN103258617A (en) * | 2013-05-20 | 2013-08-21 | 南通星源仪器设备制造有限公司 | Oil-immersed filter reactor easy to maintain |
| CN205028741U (en) * | 2015-06-23 | 2016-02-10 | 山东电力设备有限公司 | Oily hollow self -cooled neutral earthing reactor |
-
2015
- 2015-06-23 CN CN201510351042.4A patent/CN105006335B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141111A (en) * | 1984-12-13 | 1986-06-28 | Kansai Electric Power Co Inc:The | Reactor device for neutral grounding |
| CN201681700U (en) * | 2010-01-15 | 2010-12-22 | 中国西电电气股份有限公司 | Iron core grounding structure of parallel reactor |
| CN201838428U (en) * | 2010-08-24 | 2011-05-18 | 江苏盛华电气有限公司 | Oil tank of intermediate-frequency reactor |
| CN201859744U (en) * | 2010-10-27 | 2011-06-08 | 特变电工沈阳变压器集团有限公司 | Return yoke pull rod clamping structure for oil-immersed electric reactor |
| CN103258617A (en) * | 2013-05-20 | 2013-08-21 | 南通星源仪器设备制造有限公司 | Oil-immersed filter reactor easy to maintain |
| CN205028741U (en) * | 2015-06-23 | 2016-02-10 | 山东电力设备有限公司 | Oily hollow self -cooled neutral earthing reactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110890201A (en) * | 2018-09-10 | 2020-03-17 | 特变电工沈阳变压器集团有限公司 | Three-phase shunt reactor lead wire connection structure |
| CN110890201B (en) * | 2018-09-10 | 2022-07-22 | 特变电工沈阳变压器集团有限公司 | Three-phase shunt reactor lead wire connection structure |
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| CN105006335B (en) | 2017-10-13 |
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