CN110211769A - A kind of sulfur hexafluoride phase-shifting transformer - Google Patents
A kind of sulfur hexafluoride phase-shifting transformer Download PDFInfo
- Publication number
- CN110211769A CN110211769A CN201910528306.7A CN201910528306A CN110211769A CN 110211769 A CN110211769 A CN 110211769A CN 201910528306 A CN201910528306 A CN 201910528306A CN 110211769 A CN110211769 A CN 110211769A
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- Prior art keywords
- gas tank
- conducting rod
- frame
- rectangle frame
- sulfur hexafluoride
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- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 39
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 88
- 239000011324 bead Substances 0.000 claims abstract description 54
- 239000000565 sealant Substances 0.000 claims abstract description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 91
- 238000012423 maintenance Methods 0.000 claims description 23
- 238000004804 winding Methods 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 239000002390 adhesive tape Substances 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 22
- 229910000831 Steel Inorganic materials 0.000 description 18
- 239000010959 steel Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 238000009422 external insulation Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 210000001520 comb Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- ZGUQQOOKFJPJRS-UHFFFAOYSA-N lead silicon Chemical compound [Si].[Pb] ZGUQQOOKFJPJRS-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
-
- 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
- H01F27/085—Cooling by ambient air
-
- 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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- 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
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- 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
- H01F27/33—Arrangements for noise damping
-
- 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
- H01F27/341—Preventing or reducing no-load losses or reactive currents
-
- 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
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
- H01F27/2455—Magnetic cores made from sheets, e.g. grain-oriented using bent laminations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a kind of sulfur hexafluoride phase-shifting transformers, gas tank including being filled with sulfur hexafluoride in inner cavity and the transformer part in gas tank, conducting rod and seal assembly are provided on the case lid of gas tank, seal assembly includes the sealing ring, sealant bead and nut being set on conducting rod, and nut is threadedly coupled with conducting rod；Sealing ring is located at nut close to the side of case lid, sealed groove is provided on sealing ring, sealed groove is paraboloid structure, and sealant bead and sealed groove cooperate, and the planar ends of sealant bead are contacted with case lid, and sealant bead is in and is compressed axially state.Present invention utilizes the sealing surfaces of specific shape, further increase the sealing force of sealing position, improve the sealing performance of sealing structure, can fully meet the sealing between the gas tank and conducting rod using pressure insulation gas.
Description
Technical field
The present invention relates to field transformers, and in particular to a kind of sulfur hexafluoride phase-shifting transformer.
Background technique
Phase-shifting transformer used in Three-phase high-power frequency converter now is all the dry type air cooling indoor type transformation of H class B insulation
Device.The disadvantage is that size is big, consumptive material is more, at high cost, although and cloud pollution can cause insulation decline ... oil immersed type phase-shifting transformer
Disadvantages mentioned above can be overcome, if size is smaller, consumptive material is few, and it is at low cost, and be not afraid of cloud pollution and drench with rain to cause to insulate and decline.
But since transformer oil is inflammable, many indoor users is allowed to be difficult to receive oil immersed type phase-shifting transformer.Sulfur hexafluoride gas-insulating
The shortcomings that phase-shifting transformer is aiming at above-mentioned dry type, oil-immersed transformer and the novel transformer researched and developed.
For sulfur hexafluoride gas under two atmospheric pressures, heat loss through convection ability is suitable with transformer oil；In three atmosphere
Under pressure, insulation performance is suitable with transformer oil.Under three atmospheric pressures sulfur hexafluoride gas density be 18.27kg/m3, one
A maximum of about of 1500 yuan of price of sulfur hexafluoride gas as cubic meter, and one cubic metre of transformer oil weight 900kg, price is at least
15000 yuan.So the material cost of sulfur hexafluoride transformer is than oil-immersed transformer, the cost of material is low.
Prior art CN205248064U discloses a kind of SF6 gas-insulated transformer, mainly include iron core,
The low-voltage coil being wrapped on the iron core；The high-tension coil being sleeved on outside the low-voltage coil；Carry the iron core, described low
Crimping circle and the high-tension coil, and the internal hermetically sealed gas tank filled with cooling dielectric sulfur hexafluoride gas.This is existing
It is referred in technology and " is additionally provided with the high-tension insulating bushing connecting with user terminal and low-voltage insulation casing on the case lid of gas tank.",
Low-voltage insulation casing is also known as a lead silicon catheter, and quantity is few；High-tension insulating bushing is also known as secondary winding lead and leads
Pipe, quantity are more.
Usually 6kV grades of transformers are 15 groups of windings, corresponding 45 secondary winding lead bushings；10kV grades of transformers are 24
Group winding, corresponding 72 secondary winding lead bushings.Lead bushing is the conducting rod that appearance is provided with insulating layer.So many leads
Electric pole is distributed on case lid, causes the sealing performance of the sealing structure between each conducting rod and case lid to require especially big.Especially
It is its, sealing gas tank and conducting rod between stringenter to sealing performance requirement of this transformer by gas implementation insulation
It is required that keeping prolonged efficient sealed property.Due to be distributed so more conducting rods on case lid, using for sealing structure is caused to need
Consider the arrangement of conducting rod and the installation space of entirety, it should not big using structure, installation complexity sealing structure.Therefore existing
Some conducting rods are all made of setting multilayer conventional hermetic circle and are sealed.
In actual use, this structure is simple and seal failure often occurs in the general sealing structure of sealing performance, this leads
It causes later maintenance frequency to improve, increases maintenance cost, improve transformer performance with original intention instead and reduce and disagreed for cost
Back.It is directed to for the internal gas tank for pressed gas, the sealing performance of conventional sealing structure is unable to satisfy sulfur hexafluoride gas
Efficient sealed requirement needed for body insulating transformer.
Summary of the invention
It is an object of the invention to: provide a kind of sulfur hexafluoride phase-shifting transformer, solve it is existing using gas into
Sealing structure at the conducting rod of the transformer of row insulation is not suitable for the internal transformer for being filled with pressed gas, leakproofness
The technical issues of capable of being unsatisfactory for the seal request of this transformer gas tank.A kind of sulfur hexafluoride phase shift transformation designed by the present invention
Device has changed traditional simple structure being sealed by one layer of setting or multi-layer sealed circle, specific shape is utilized
Sealing ring further increases the sealing force of sealing position, improves the sealing performance of sealing structure, can fully meet
Using the sealing between the gas tank and conducting rod of pressure insulation gas, the frequency of maintenance and maintenance cost of transformer are reduced, with
Transformer performance is improved using sulfur hexafluoride phase-shifting transformer and is reduced at original original intention consistent.
The technical solution adopted by the invention is as follows:
A kind of sulfur hexafluoride phase-shifting transformer, including being filled with the gas tank of sulfur hexafluoride in inner cavity and in gas tank
Transformer part, is provided with multiple electric conduction rod components on the case lid of gas tank, and the electric conduction rod component includes one end through case lid
Conducting rod and by between case lid and conducting rod matching part seal seal assembly, the seal assembly include be set in
Sealing ring, sealant bead and nut on conducting rod, wherein the nut is threadedly coupled with conducting rod；
The sealing ring is located at nut close to the side of case lid, and it is recessed that one end on sealing ring close to case lid is provided with sealing
Slot, the sealed groove are paraboloid structure, and center line is overlapped with the axis of conducting rod；
The contour structures of the sealant bead are by the consistent paraboloid of geomery and general with sealed groove
The plane composition of this paraboloid port covering, sealant bead and sealed groove cooperate, are preferably interference fitted, sealant bead
Planar ends contacted with case lid, and the through-hole A, the through-hole A that pass through for conducting rod and conducting rod mistake are provided on sealant bead
It is full of cooperation, and sealant bead is in and is compressed axially state.
It is furnished with sealing ring on conducting rod, sealing ring is preferably formed with round steel turnery processing, and internal sealed groove is this
The designed sealing surface of invention, and since it is paraboloid, for a kind of groove body of poly- power sealing force, referred to as poly- power slot.
The sealant bead outer surface to match with sealed groove is also paraboloid.Sealant bead and sealed groove are interference fitted, i.e., close
Sealing pearl is in radial compression in sealed groove.Purpose using paraboloid is nut pair after tightening nut
Axial compressive force a part of sealing ring is converted into sealant bead to the width of conducting rod to pressure, makes between sealant bead and conducting rod
It seals closer.
Sealed groove is paraboloid structure, and longitudinal section is the half that an ellipse includes a complete focus.When
Junk ring under nut, sealing ring push sealant bead, and nut is converted into sealant bead to axial compressive force a part of sealing ring
To the width of conducting rod to pressure, lead to make that sealant bead is axial, radial is compressed.Script sealant bead just passes through through-hole A
It is interference fitted with conducting rod, then the extruding of the sealed groove via the paraboloid structure especially set, makes sealant bead diameter
To stress, the sealing force between sealant bead and conducting rod is further increased, is improved close between sealant bead and conducting rod
Feng Xing, and seal preload is generated between sealant bead and conducting rod, it ensure that sealing between sealant bead and conducting rod
The validity of position, prevents sealing position from failing.Herein, when the axial compressive force for tightening nut generation on conducting rod also can be by close
Paraboloid on sealing cover focuses on the poly- power slot on conducting rod, to make to generate great pressure herein, makes sealant
Pearl is pressed closer with conducting rod, avoids the leakage of sulfur hexafluoride gas.
To sum up, present invention eliminates traditional by one layer of setting or it is multi-layer sealed enclose the simple structure that is sealed,
The sealing surface of specific shape is utilized, further increases the sealing force of sealing position, improves the leakproofness of sealing structure
Can, the sealing between the gas tank and conducting rod using pressure insulation gas can be fully met, the maintenance of transformer is reduced
Frequency and maintenance cost, and are improved transformer performance using sulfur hexafluoride phase-shifting transformer and reduced into original original intention one
It causes.
Due to using the technical program, the beneficial effects of the present invention are:
1. a kind of sulfur hexafluoride phase-shifting transformer of the present invention, present invention eliminates traditional by the way that one layer or multilayer is arranged
The simple structure that sealing ring is sealed, is utilized the sealing surface of specific shape, further increases the sealing of sealing position
Power improves the sealing performance of sealing structure, can fully meet between gas tank and conducting rod using pressure insulation gas
Sealing, reduce the frequency of maintenance and maintenance cost of transformer, improve transformation with using sulfur hexafluoride phase-shifting transformer
Device performance simultaneously reduces consistent at original original intention；
2. a kind of sulfur hexafluoride phase-shifting transformer of the present invention, the setting of pod and exhaust fan can carry out transformer strong
System cooling, improves the working environment of transformer；
3. a kind of sulfur hexafluoride phase-shifting transformer of the present invention, after iron core column assembly, there are gap between each vertical frame,
Noise can be generated, no-load current is increased；It is therefore preferred to which position among each rectangle frame is bent so that position at stem according to
Secondary flat contact reduces noise, reduces no-load current to eliminate the gap of each vertical frame
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings, and the proportionate relationship of all parts in this specification attached drawing does not represent practical selection design
When proportionate relationship, be only the schematic diagram of structure or position, in which:
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the structural schematic diagram that the present invention looks up；
Fig. 3 is vertical section structure schematic diagram of the present invention；
Fig. 4 is the structural schematic diagram of gas tank；
Fig. 5 is the cooperation schematic diagram of seal assembly and conducting rod；
Fig. 6 is the structural schematic diagram of sealing ring；
Fig. 7 is the structural schematic diagram of sealant bead；
Fig. 8 is the structural schematic diagram of transformer part；
Fig. 9 is the main view of transformer part；
Figure 10 is the cross-sectional view of A-A in Fig. 9；
Figure 11 is the structural schematic diagram of iron core and the cooperation of iron core clamping component；
Figure 12 is the structural schematic diagram of iron core clamping component；
Figure 13 is the top view of Figure 12；
Figure 14 is the structural schematic diagram of iron core；
Figure 15 is the top view of iron core；
Figure 16 is the structural schematic diagram of embodiment 7；
Figure 17 is iron core overlapping top view；
Figure 18 is the tooling for inserting folded iron core column；
Figure 19 be in Figure 18 A to structural schematic diagram.
Numbering in the drawing explanation:
1- gas tank, 2- case lid, 3- conducting rod, 4- sealing ring, 5- sealant bead, 6- nut, 7- sealed groove, 8- through-hole A,
9- annular groove, 10- flange, 11- cooling fin, 12- pod, 13- blower, 14- through-hole B, 15- access hole, 16- maintenance door,
17a- upper ledge side, 17-b lower frame, 17c- munnion side 17,18- feet channel steel, the fixed trunnion of 19-, 20- rotate trunnion, and 21- is hung
Axis, 22- outside plate, 23- inner panel, 24- screw rod A, 25- nut A, 26- screw rod B, 27- nut B, 28-U shape plate, 29- plectane, 30-
End plate, 31- screw rod C, 32- nut C, 33- center bolt, 34- center nut, 35- fixed plate, 36- support plate, 37- positioning are logical
Hole, 38- long cushion block, the wrapped rubber mat of 39-, 40- linking arm, 41- iron core partition, 42- interior insulation cylinder, 43- inner washer are high in 44-
Press comb, 45- first winding, 46- external insulation cylinder, 47- outer washer, the outer high pressure comb of 48-, 49- secondary winding；
1a- lower yoke, 2a- clamp insulation, 3a- arch folder, 4a- iron yoke screw rod, 5a- drawstring, 6a- iron core feet；
1b- column pincers, 2b- column, 3b- moving jaw, 4b- iron core column, 5b- column, 6b- iron yoke, 8b- iron core feet,
9b- closed assembly platform.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
It elaborates below with reference to Fig. 1 to Figure 16 to the present invention.
Embodiment 1
As shown in Fig. 1-Fig. 7, a kind of sulfur hexafluoride phase-shifting transformer of the present invention, including being filled with sulfur hexafluoride in inner cavity
Gas tank 1 and the transformer part in gas tank 1 are provided with multiple electric conduction rod components on the case lid 2 of gas tank 1, described to lead
Electric pole component includes one end through the conducting rod 3 of case lid 2 and the sealing for sealing matching part between case lid 2 and conducting rod 3
Component, the seal assembly include the sealing ring 4, sealant bead 5 and nut 6 being set on conducting rod 3, wherein the spiral shell
Mother 6 is threadedly coupled with conducting rod 3；
The sealing ring 4 is located at nut 6 close to the side of case lid 2, and one end on sealing ring 4 close to case lid 2 is provided with
Sealed groove 7, the sealed groove 7 are paraboloid structure, and center line is overlapped with the axis of conducting rod 3；
The contour structures of the sealant bead 5 by one with the consistent paraboloid of geomery of sealed groove 7 and
By the plane composition of this paraboloid port covering, sealant bead 5 and sealed groove 7 cooperate, are preferably interference fitted, seal
The planar ends of glue bead 5 are contacted with case lid 2, and the through-hole A8, the through-hole A8 passed through for conducting rod 3 is provided on sealant bead 5
It is interference fitted with conducting rod 3, and sealant bead 5 is in and is compressed axially state.
Conducting rod material is preferably brass, has both been considered conductive it is further contemplated that mechanical strength and convenient for machining.Capacity is
4000kVA and transformer conducting bar below preferably useBrass bar be process, capacity be 4000kVA or more it is excellent
Selection of land usesBrass bar is process.
It is furnished with sealing ring 4 on conducting rod 3, sealing ring 4 is preferably formed with round steel turnery processing, internal sealed groove 7
It is sealing surface designed by the present invention, and since it is paraboloid, for a kind of groove body of poly- power sealing force, referred to as poly- power
Slot.5 outer surface of sealant bead to match with sealed groove 7 is also paraboloid.Sealant bead 5 is matched with 7 interference of sealed groove
It closes, i.e., sealant bead 5 is in radial compression in sealed groove 7.Purpose using paraboloid is will to tighten nut 6
Afterwards, nut 6 is converted into sealant bead 5 to the radial pressure of conducting rod to axial compressive force a part of sealing ring 4, makes sealant bead
It is sealed between 5 and conducting rod 3 closer.
Sealed groove 7 is paraboloid structure, and longitudinal section is the half that an ellipse includes a complete focus.When
The lower junk ring 4 of nut 6, sealing ring 4 push sealant bead 5, and nut 6 is converted into axial compressive force a part of sealing ring 4 close
Sealing pearl 5, to pressure, causes to compress the axial direction of sealant bead 5, radial direction to the width of conducting rod.Script sealant bead 5 is just
It is interference fitted by through-hole A8 and conducting rod 3, then the extruding of the sealed groove 7 via the paraboloid structure especially set,
Make 5 radial force of sealant bead, further increases the sealing force between sealant bead 5 and conducting rod 3, improve sealant bead
Leakproofness between 5 and conducting rod 3, and seal preload is generated between sealant bead 5 and conducting rod 3, it ensure that sealant bead 5
The validity of sealing position, prevents sealing position from failing between conducting rod 3.Herein, when tightened on conducting rod nut generate
Axial compressive force can also be focused on by the paraboloid on seal closure on the poly- power slot on conducting rod, to make to generate herein
Great pressure makes sealant bead press closer with conducting rod, avoids the leakage of sulfur hexafluoride gas.
To sum up, present invention eliminates traditional by one layer of setting or it is multi-layer sealed enclose the simple structure that is sealed,
The sealing surface of specific shape is utilized, further increases the sealing force of sealing position, improves the leakproofness of sealing structure
Can, the sealing between the gas tank and conducting rod using pressure insulation gas can be fully met, the maintenance of transformer is reduced
Frequency and maintenance cost, and are improved transformer performance using sulfur hexafluoride phase-shifting transformer and reduced into original original intention one
It causes.
The gas tank used in the present invention is strengthened sealing gas tank.Tank wall preferably uses the roll of steel plate of thickness 6mm or more
At cylindrical shape；Bottom preferably uses the steel plate of thickness 12mm or more.Case lid preferably uses the high density of thickness 50mm or more
Epoxy fabric swatch is process；Case lid is fixed on tank wall by case along flange seal, and case is along flange preferably with a thickness of 25mm
Or more steel plate be process, and process seal groove convenient for sealing element insertion, with realize the sealing between case lid and tank wall connect
It connects.In the present invention on the position of all design welding, welding surface is both needed to bevel and two-sided welding.
Embodiment 2
The present embodiment is on the basis of embodiment 1, to make about the cooperation between conducting rod 3 and sealant bead 5 into one
Implement explanation in step ground.
As shown in Figure 5-Figure 7, in the present invention, annular is provided on the side wall in through-hole A8 on the conducting rod 3
The axis of slot 9, the annular groove 9 is overlapped with the axis of conducting rod 3, the position opposite with annular groove 9 on the sealant bead 5
Evagination is interference fitted at annular flange 10, the flange 10 with annular groove 9.
Embodiment 3
The present embodiment be about transformer pressure water conservancy diversion cooling carry out implementation explanation.
As shown in Figure 1-Figure 3, in the present invention, pressure guiding device, the pressure water conservancy diversion dress are provided on the gas tank 1
It sets including pod 12 and exhaust fan 13, the pod 12 is bottom opening, cylindrical structure with a closed top, the gas tank 1
Top insertion from the bottom end of pod 12 insertion pod 12 in, the closed end of pod 12 is provided with through-hole B14, institute
It states exhaust fan 13 to be mounted in through-hole B14, the gas from 12 bottom end of pod is drawn upwardly out by exhaust fan 13.
Further, on the side wall of the gas tank 1, along gas tank 1 circumferential direction be successively provided with evenly and at intervals it is multiple dissipate
Backing 11, the cooling fin 11 are located in pod 12.
Preferably, the cooling fin 11 is corrugated plating.Cooling fin can use the cooling fin of planar shaped, can use ripple
Plate.When using corrugated plating, preferably corrugated plating extends along the axis ripple perpendicular to ground.
Pod 12 is preferably rolled into cylinder and is wrapped up cooling fin 11 using 3mm steel plate, and top is welded flange, then uses 4mm
On sheet-steel cover.Hole B14 is opened among steel plate, and strong drawing machine 13 is installed in through-hole B14, forms the air-cooled effect of forced guiding.
The setting of pod 12 and exhaust fan 13 can carry out forced cooling to transformer, improve the working environment of transformer.
Embodiment 4
The present embodiment is to make further explaining to the structure of pod.
As Figure 1-Figure 2, in the present invention, it is provided with access hole 15 on the side wall of the pod 12, in pod
It is hingedly provided with maintenance door 16 on 12 outer wall and on the side of access hole 15, rotates maintenance door around hinged axis
16 can make maintenance door 16 cover access hole 15, and maintenance door is connected by magnetic seal adhesive tape and the absorption of pod 12.
For the ease of staff to transformer connection, access hole 15 is set on the top of 12 side wall of pod.Preferably
There are two access holes 15 for setting, for giving first and second terminal connections respectively.The surrounding of access hole 15 is mounted on magnetic seal glue
Item, and respectively covered respectively by a maintenance door 16.Simultaneous with door lock, non-maintenance personal can be prevented to be strayed into.
About the side for being provided that on the side wall of pod 12 and being located at access hole 15 of door lock, simultaneously far from hinged
The one end at position is provided with fixed trunnion 19, and one end of the fixed trunnion 19 is welded on the side wall of pod 12, the other end
Preferably extend around hinged axis；It is provided with fixed hole on fixed trunnion 19, the axis of the fixed hole is vertical
In ground；It is welded with rotation trunnion 20 far from hinged one end in maintenance door 16, is provided on rotation trunnion 20 for fixation
The strip through-hole that trunnion 19 passes through.When lockking maintenance door 16, maintenance door 16 covers access hole 15, fixed trunnion 19 is provided with
Then the strip through-hole that one end of fixed hole passes through after fixed hole and is snapped latching with the lock bridge of padlock.
Embodiment 5
The present embodiment is to make implementing explanation to the core structure of transformer in the present invention.
As shown in figs. 14-15, in the present invention, the transformer part includes triangle three-dimensional winding iron core, is wrapped in three cores
Winding and iron core clamping component on column, the iron core include three rectangle frame units, axis of the rectangle frame unit around gas tank 1
The distribution of line central symmetry, rectangle frame unit include several along one and the folded rectangle set of the axis that the axis of gas tank 1 is just intersecting
Frame, the rectangle frame is each parallel to the axis of gas tank 1, and the cross section of iron core is triangle, and each rectangle frame unit difference is each
In a line of triangle；Rectangle frame includes upper ledge 17c, munnion side in 17a, lower frame 17b and two munnions
The both ends of 17c are contacted with upper ledge side 17a, lower frame 17b respectively；
The upper ledge side 17a forms upper yoke, and lower frame 17b forms the lower yoke of iron core, a rectangle frame unit two sides
Munnion in 17c respectively with munnion adjacent thereto in other two rectangle frame unit while 17c form stem；
The iron core steps up component and each rectangle frame is stepped up and fixed；
Mandrel bottom is provided with feet, iron core is fixed in gas tank 1 by feet.
When using the volume iron core of stereochemical structure, for the ease of winding to be sleeved on iron core, preferably by stem position
It is split with iron yoke position.
Embodiment 6
The present embodiment is to make further carrying out explanation to the iron core in embodiment 5.
As shown in Figure 14-Figure 15, in the present invention, in each rectangle frame unit, with the axis far from gas tank 1, square
Shape frame is followed successively by the first frame, the second frame ... Nth frame, N+1 frame ... X frame, from the first frame to Nth frame, the width of rectangle frame
Degree is sequentially increased, while the width dimensions of the munnion side 17c are sequentially increased, upper ledge side 17a, the lower frame 17b of rectangle frame and
Munnion in 17c respectively with the upper ledge in adjacent rectangle frame unit while 17a, lower frame 17b and munnion side 17c contact, and in iron
A circle is drawn on the cross section of the stem of core, a rectangle frame unit connects with each rectangle frame in another rectangle frame unit
The diameter arrangement just intersected with the axis centre of gas tank 1 that contact portion position is justified along this；
From Nth frame to X frame, the width of rectangle frame is sequentially reduced, while the width dimensions of munnion side 17c are sequentially reduced,
And it is respectively positioned on the circumference of the circle on the outside of the 17c of munnion side；
In each munnion side for forming the same stem, it is respectively positioned on the circumference of the circle on the inside of the 17c of munnion side.N,
X is natural number, X > N.
Since iron core is that each sheet shape material material is formed by stacking, stem is non-circular, the inconvenience when being set with winding；Cause
This preferably by the restriction of each sheet shape material material size, makes the cross section of stem close to circle, in order to winding
Be arranged.
Embodiment 7
The present embodiment is to make further carrying out explanation to iron core designed in embodiment 6.
As shown in figure 16, the present invention in, the intermediate position of each rectangle frame to the axis evagination of gas tank 1 so that
Position of the upper ledge when being located at two munnions contacted on 17a and lower frame 17b between 17c becomes arc, and is located at same
The position that munnion at one circle contacts on 17a, lower frame 17b with munnion side 17c in 17c and upper ledge is each parallel to this circle
A diameter just intersected with the axis centre of gas tank 1.
After iron core column assembly, there are gaps between each vertical frame, can generate noise, increase no-load current.Therefore originally
In technical solution, preferably position among each rectangle frame is bent, so that the successively plane contact of the position at stem, to disappear
The gap of vertical frame unless each reduces noise, reduces no-load current.
Embodiment 8
The present embodiment is made for the sealing structure between conducting rod 3 and case lid 2 into one to designed in the present invention
Implement explanation in step ground.
In the present invention, it is arranged on each conducting rod 3 there are two seal assembly, and be set in same root conducting rod 3
On two seal assemblies be located at the two sides up and down of case lid 2.And each seal assembly includes two nuts.
It is respectively provided with seal assembly on conducting rod 3, positioned at the position of 2 upper and lower end of case lid, so that sealing performance mentions at double
It rises, further ensure that the excellent sealing performance of the present invention.
Embodiment 9
The present embodiment is to make implementing explanation to lifting use of the invention.
As shown in Fig. 2, in the bottom of the gas tank 1, there are two feet channel steel 18, the feet channel steels for setting in the present invention
18 axis is parallel to each other, and symmetrical along the axis centre of gas tank 1, and top is connect with the bottom of gas tank 1.Feet channel steel 18
Respectively there are a telescopic hanging axis 21, for transformer integral hoisting in both ends.
Embodiment 10
The present embodiment is to carry out implementation explanation to the corresponding iron core clamping component of iron core designed by the present invention.
Iron core clamping component can use existing clamping component, can also be using clamping group designed in the present embodiment
Part.
The clamping component includes flat grip mechanism and vertical clamp system, and the flat grip mechanism includes three sides
Clamp system and three angle connection components and multiple face connection components, the side clamp system and angle connection component are successively staggeredly set
It sets and annular of encircling a city, side clamp system is respectively corresponding with a rectangle frame unit respectively, and side clamping includes each parallel to 1 axis of gas tank
Outside plate 22, inner panel 23, the inner panel 22 is located at its corresponding rectangle frame unit close to the side of 1 axis of gas tank, outside plate 22
In side of the rectangle frame unit far from 1 axis of gas tank, on side, the upper/lower terminal of clamping component is provided with multiple face connection groups
Part, the face connection component include screw rod A24 and two nut A25, and the both ends of the screw rod A24 extend through on outside plate 22
Trunnion, be threadedly coupled with nut A25 after the trunnion on inner panel 23, and outside plate 22, inner panel 23 each other to opposite respectively with
One rectangle frame and the contact of X rectangle frame.
The side clamp system for being located at its two sides is connected and fixed by angle connection component, and the angle connection component includes that two angles connect
Order member, the angle connection unit include that the both ends of screw rod B26 and two nuts B27, the screw rod B26 respectively pass through one respectively
It is threadedly coupled after outside plate 22 with nut B27.
The angle connection unit further includes two U-boards 28, inclined-plane is milled out in two ends of U-board, so that U-board
End there is rectangular slab to become right angle triangle, U-board 28 respectively connects with the side on an outside plate 22 far from 1 axis of gas tank respectively
It connects, and U-board 28 is welded on outer plate 22 by inclined-plane, while the intermediate plate of U-board is perpendicular to the axis of screw rod B26, nut
It is plane-plane contact between B27 and the arcuate surface of intermediate plate.
There are two the flat grip mechanisms, is located at the upper/lower terminal of iron core.
The vertical clamp system includes two end face components, three vertical connection components and a center connection component,
The end face component is including a plectane 29 and three along the circumferential equally distributed end plate 30 of plectane 29, the axis of the plectane 29
Line is overlapped with the axis of gas tank 1, and perpendicular to the axis of gas tank 1, one end of end plate 30 and the side wall of plectane 29 connect the end plate 30
It connects, the other end is located at the outside of iron core；The upper and lower two sides of end face member cores, opposite face respectively with a flat grip
Mechanism contacts, preferably 30 lower surface of end plate and 22 upper-end contact of outside plate.The vertical connection component includes screw rod C31 and two
The axis of a nut C32, the screw rod C31 are parallel with the axis of gas tank 1, both ends respectively pass through respectively after end plate 30 with
Nut C32 is threadedly coupled.The center connection component includes center bolt 33 and two center nuts 34, the center bolt 33
Both ends respectively respectively pass through a plectane 29 after be threadedly coupled with center nut 34.
The bottom for the end face component for being located at mandrel bottom is provided with feet, the feet includes central plate and three fixations
One end of plate 35, the fixed plate 35 is connect with central plate, and the other end extends to the side far from 1 axis of gas tank, and fixed
Plate 35 is each positioned at the underface of an end plate 30 respectively, and fixed plate 35 is connect by multiple support plates 36 with end plate 30, solid
Positioning through hole 37 is provided on fixed board 30.
Be provided with three groups of line packet cushion block groups in upper and lower two sides clamp system opposite side, line packet cushion block group respectively respectively with
One stem is corresponding, and there are four line packet cushion blocks for the line packet cushion block group, are successively spaced and are uniformly distributed along the outside of stem.
The line packet cushion block includes long cushion block 38 and linking arm 40, and the linking arm 40 is welded on outside plate 22, and long cushion block 38 passes through spiral shell
Nail is fixed on linking arm 40, is arranged wired encapsulated pad 39 close to the side of winding, the encapsulated pad 39 of the line and winding overhang
Contact.
When rectangle frame is not bent, the position contacted with each other between two adjacent in the axial direction rectangle frame units is provided with
Iron core partition 41.
Embodiment 11
The present embodiment is illustrated to winding of the invention.
It is arranged interior insulation cylinder 42 on the stem, upper inner washer 43 is arranged in the upper/lower terminal of interior insulating cylinder, upper
Setting is axially uniformly distributed multiple interior high pressure combs 44 along washer between lower two inner washers, interior high pressure comb both ends respectively respectively with
One inner washer connection；It is arranged multiple groups first winding 45 on interior high pressure comb, keeps coil axis interior to adjacent both threads
Comb teeth on high pressure comb separates.It is arranged external insulation cylinder 46 on the outside of first winding, is arranged in the upper/lower terminal of external insulation sleeve
Upper outer washer 47, setting is axially uniformly distributed multiple outer high pressure combs 48, outer high pressure along washer between upper and lower two outer washers
Comb both ends are respectively connect with an outer washer respectively；Be arranged multiple groups secondary winding 49 on outer high pressure comb, make coil axis to
Adjacent both threads are separated by the comb teeth on outer high pressure comb.
Embodiment 12
The present embodiment is illustrated to the main installation step of iron core designed by embodiment 7.
One, lower yoke, rear dowel stem first one of the method for solid transformer iron core forming: are folded.
1) the wide silicon steel sheet strip of regulation piece is cut into the 45o isosceles trapezoid column piece and isosceles trapezoid yoke piece of certain length.
Fast dry insulating paint is sprayed at 45o clip position.Pay attention to the calculating of yoke piece Center Length,
Formula: Lo=π * Mo/3-n* π * δ
In formula: Lo ... the yoke piece long mm in center
π ... pi 3.1416
Mo ... column core is away from mm
N ... the lamination number of plies 0,1,2,3 ...
δ ... silicon steel sheet thickness mm is usually 0.3mm
Above formula simplifies are as follows: Lo=1.047 × Mo-n × 0.942, the shearing of yoke leaf length should be on numerically-controlled machine tool
It completes.
2) on iron core overlapping platform, iron core feet 6a and feet insulation are well placed.Then by isosceles trapezoid yoke piece by rule
Rule stack on closed assembly platform installs clamp insulation 2a and arch folder folder 3a, tightens iron yoke screw rod 4a at " Y " font iron yoke
With drawstring 5a, lower yoke 1a assembly is completed.
3) the good lower yoke of closed assembly is placed on iron core overlapping platform, faces iron yoke Center-triangle space center
Leghole on closed assembly platform.Column is inserted into leghole, the column for positioning iron core column is clamped to solid, column pincers on column
Movable jaw is vised folded iron core column is inserted, and iron core is made to be unlikely to tilt, then will insert the iron core column folded by 100~
120mm spacing is bound with no latitude glass tape.
Two, the two of the method for solid transformer iron core forming: iron core column is first folded, inserts lower yoke afterwards.
1. iron core column lamination shapes
1) the wide silicon steel sheet strip of regulation piece is cut into the 45 ° of isosceles trapezoid pieces and isosceles trapezoid yoke piece of certain length.?
45 ° of clip positions spray fast dry insulating paint.
2) by isosceles trapezoid column piece, by rule, for stack at iron core column 4b, section is in be external in round rank on closed assembly platform
It is trapezoidal.
3) the good iron core column of stack is tightened by 100~120mm of spacing with no latitude glass tape.
4) by it is above-mentioned 2), 3) step two iron core columns of stack again.
2. iron yoke inserted sheet formed lenticular iron core and transformer assembling
1) three iron core columns are uprightly clamped with the clamping piece on column on three-dimensional iron core overlapping platform, holding post core away from for
Equilateral triangle.
2) above-mentioned isosceles trapezoid yoke piece is inserted into order in stem, and the bending of retention yoke piece is in the arc-shaped.It inserts and folds
Three-phase iron yoke is in " Y " font.
3) three-phase iron yoke is clamped with arch folder, clamp insulation and iron yoke screw rod, middle part is tensed with drawstring again.
4) iron core feet and feet insulation are installed, folder is connected with iron core feet with bolt, tightens nut.
5) three root posts of iron core overlapping platform are connected with channel steel, shaft is installed on channel steel.Remove three with closed assembly platform
Root post connects bolt keeps iron core integrally liftoff with crane lifting shaft.Iron core is overturn 180 degree, makes iron core by rotating shaft
Feet landing.Three root posts and iron core column clamping piece for removing closed assembly platform, are left with the three-dimensional iron core without upper yoke.
6) it will be placed on platform without the three-dimensional iron core of upper yoke, then carry out body insulation assembly, phase-shifting transformer
Primary coil, secondary coil suit, width to positioning and fastening, then by it is above-mentioned 2), 3) item step insert fold upper yoke, installation
Three-phase iron yoke is clamped arch upper clamping piece with iron yoke screw rod by good clamp insulation, and middle part is tensed with no latitude glass fiber drawstring again.
7) folder from top to bottom is tensed with drawing screw rod, while is compressed coil with upper and lower iron yoke cushion block and nail pressing.
8) lead is connected, will be lifted one's head on the primary side casing for being connected to case lid in turn；Secondary lead wires are connected, will be lifted one's head
It is connected in turn on the secondary side connecting terminal of case lid.Complete the iron-core coil group assembled with upper core, coil, insulation and lead
Zoarium is known as body.
9) body is lifted in sealing gas tank.
10) it puts flange sealing element well, tightens nut, the pod with exhaust fan is finally installed, transformer assembling finishes.
Embodiment 13
The present embodiment is to make implementing explanation about gas tank.
Gas tank needs that the test of 5 ㎏ leak-free pressures can be born for a long time, so tank wall is rolled into cylinder with the steel plate of 6mm or more
Shape, bottom are welded with the steel plate of 12mm or more, case lid 50mm epoxy fabric swatch, are drilled on case lid, installation bushing, tap
Switch and low-pressure line-outgoing conduit；Heat to issue transformer is taken out of, needs spot welding corrugate fin outside cabinet.2mm is used again
Steel plate is rolled into cylinder and wraps up corrugate fin, and top is welded 4mm steel plate, intermediate aperture, installs strong drawing machine, forms strength
It is oriented to air-cooled effect.
The above, only the preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, it is any
Those skilled in the art within the technical scope disclosed by the invention, can without the variation that creative work is expected or
Replacement, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Subject to fixed protection scope.
Claims (10)
1. a kind of sulfur hexafluoride phase-shifting transformer, including being filled with the gas tank (1) of sulfur hexafluoride in inner cavity and being located at gas tank (1)
In transformer part, be provided with multiple electric conduction rod components on the case lid (2) of gas tank (1), the electric conduction rod component includes one
The seal assembly that end runs through the conducting rod (3) of case lid (2) and seals matching part between case lid (2) and conducting rod (3),
Be characterized in that: the seal assembly includes sealing ring (4), sealant bead (5) and the nut (6) being set on conducting rod (3),
Wherein,
The nut (6) is threadedly coupled with conducting rod (3)；
The sealing ring (4) is located at the side of nut (6) close to case lid (2), close to the one end of case lid (2) on sealing ring (4)
It is provided with sealed groove (7), the sealed groove (7) is paraboloid structure, the axis weight of center line and conducting rod (3)
It closes；
The contour structures of the sealant bead (5) by one with the consistent paraboloid of geomery of sealed groove (7) and
By the plane composition of this paraboloid port covering, sealant bead (5) and sealed groove (7) are interference fitted, sealant bead (5)
Planar ends contacted with case lid (2), and the through-hole A (8) passed through for conducting rod (3), the through-hole are provided on sealant bead (5)
A (8) and conducting rod (3) are interference fitted, and sealant bead (5) is in and is compressed axially state.
2. a kind of sulfur hexafluoride phase-shifting transformer according to claim 1, it is characterised in that: on the conducting rod (3)
It is provided with annular groove (9) on the side wall in through-hole A (8), the axis of the annular groove (9) and the axis weight of conducting rod (3)
Close, on the sealant bead (5) with annular groove (9) relative to position evagination at annular flange (10), the flange (10) with
Annular groove (9) interference fit.
3. a kind of sulfur hexafluoride phase-shifting transformer according to claim 1, it is characterised in that: set on the gas tank (1)
It is equipped with pressure guiding device, the pressure guiding device includes pod (12) and exhaust fan (13), and the pod (12) is
The top insertion of bottom opening, cylindrical structure with a closed top, the gas tank (1) is inserted into pod from the bottom end of pod (12)
(12) it in, is provided with through-hole B (14) in the closed end of pod (12), the exhaust fan (13) is mounted in through-hole B (14), takes out
Gas from pod (12) bottom end is drawn upwardly out by blower (13).
4. a kind of sulfur hexafluoride phase-shifting transformer according to claim 3, it is characterised in that: in the side of the gas tank (1)
It is successively provided with evenly and at intervals multiple cooling fins (11) on wall, along the circumferential direction of gas tank (1), the cooling fin (11) is located at water conservancy diversion
It covers in (12).
5. a kind of sulfur hexafluoride phase-shifting transformer according to claim 4, it is characterised in that: the cooling fin (11) is wave
Card.
6. a kind of sulfur hexafluoride phase-shifting transformer according to claim 3, it is characterised in that: in the pod (12)
It is provided with access hole (15) on side wall, is hingedly provided on the outer wall of pod (12) and on the side of access hole (15)
Maintenance door (16) can make maintenance door (16) cover access hole (15), and overhaul around hinged axis rotation maintenance door (16)
Door is connected by magnetic seal adhesive tape and pod (12) absorption.
7. a kind of sulfur hexafluoride phase-shifting transformer according to claim 1, it is characterised in that: the transformer part includes
Triangle three-dimensional winding iron core, the winding being wrapped on three stems and iron core clamping component, the iron core include three rectangle frame lists
Member, the rectangle frame unit is symmetrical around the axis centre of gas tank (1), and rectangle frame unit includes several along one and gas tank
(1) the folded rectangle frame set of axis that axis is just intersecting, axis of the rectangle frame each parallel to gas tank (1), and the cross of iron core
Section is triangle, and each rectangle frame unit is each positioned at respectively in a line of triangle；Rectangle frame include upper ledge side (17a),
Lower frame (17b) and two munnion sides (17c), the munnion at the both ends of (17c) respectively with upper ledge while (17a), lower frame
(17b) contact；
The upper ledge side (17a) forms upper yoke, and lower frame (17b) forms the lower yoke of iron core, a rectangle frame unit two sides
Munnion while (17c) respectively with munnion adjacent thereto in other two rectangle frame unit while (17c) form stem；
The iron core steps up component and each rectangle frame is stepped up and fixed；
Mandrel bottom is provided with feet, iron core is fixed in gas tank (1) by feet.
8. a kind of sulfur hexafluoride phase-shifting transformer according to claim 7, it is characterised in that: each rectangle frame unit
In, with the axis far from gas tank (1), rectangle frame is followed successively by the first frame, the second frame ... Nth frame, N+1 frame ... X frame,
From the first frame to Nth frame, the width of rectangle frame is sequentially increased, while the width dimensions on the munnion side (17c) are sequentially increased, square
The upper ledge of shape frame in (17a), lower frame (17b) and munnion (17c) respectively with the upper ledge side in adjacent rectangle frame unit
(17a), lower frame (17b) and munnion side (17c) contact, and a circle, a square are drawn on the cross section of the stem of iron core
The contact site of each rectangle frame is along the axis with gas tank (1) that this justifies in shape frame unit and another rectangle frame unit
The diameter arrangement that the heart is just intersecting；
From Nth frame to X frame, the width of rectangle frame is sequentially reduced, while the width dimensions of munnion side (17c) are sequentially reduced, and
It is respectively positioned on the circumference of the circle on the outside of munnion side (17c)；
In each munnion side for forming the same stem, it is respectively positioned on the circumference of the circle on the inside of munnion side (17c).
9. a kind of sulfur hexafluoride phase-shifting transformer according to claim 8, it is characterised in that: in each rectangle frame
Between position to the axis evagination of gas tank (1), contacted so as to be located at two on upper ledge side (17a) and lower frame (17b)
Position between munnion side (17c) becomes arc, and be located at the munnion at the same circle in (17c) and upper ledge (17a), under
Frame is just intersecting in the axis centre of justify with (17c) is contacted when munnion position each parallel to this on (17b) one and gas tank (1)
Diameter.
10. a kind of sulfur hexafluoride phase-shifting transformer according to claim 1 to 9, it is characterised in that: Mei Gesuo
The two seal assemblies difference stating seal assembly there are two being arranged on conducting rod (3), and being set on same root conducting rod (3)
Positioned at the two sides up and down of case lid (2).
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| CN201910528306.7A CN110211769B (en) | 2019-06-18 | 2019-06-18 | Sulfur hexafluoride phase-shifting transformer |
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| CN201910528306.7A CN110211769B (en) | 2019-06-18 | 2019-06-18 | Sulfur hexafluoride phase-shifting transformer |
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| CN109193417A (en) * | 2018-07-22 | 2019-01-11 | 国网新疆电力有限公司和田供电公司 | A kind of outdoor box device for transformer |
| CN109066447A (en) * | 2018-10-12 | 2018-12-21 | 山东彼岸电力科技有限公司 | A kind of gas insulated bushing end seal structure |
| CN209766185U (en) * | 2019-06-18 | 2019-12-10 | 四川智翔电器有限公司 | Sulfur hexafluoride phase-shifting transformer |
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