CN109448945A - A kind of 750kV high anti-seismic AC system arrester - Google Patents
A kind of 750kV high anti-seismic AC system arrester Download PDFInfo
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- CN109448945A CN109448945A CN201811514279.XA CN201811514279A CN109448945A CN 109448945 A CN109448945 A CN 109448945A CN 201811514279 A CN201811514279 A CN 201811514279A CN 109448945 A CN109448945 A CN 109448945A
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- arrester
- seismic
- insulating cylinder
- high anti
- piercing rod
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- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims description 18
- 238000010079 rubber tapping Methods 0.000 claims description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 12
- 239000012212 insulator Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 229910000838 Al alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- 229960001296 zinc oxide Drugs 0.000 description 6
- 239000011787 zinc oxide Substances 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 208000025274 Lightning injury Diseases 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000715 Mucilage Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
- H01C1/012—Mounting; Supporting the base extending along and imparting rigidity or reinforcement to the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
- H01C1/022—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being openable or separable from the resistive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/08—Cooling, heating or ventilating arrangements
- H01C1/084—Cooling, heating or ventilating arrangements using self-cooling, e.g. fins, heat sinks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
- H01C7/123—Arrangements for improving potential distribution
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
Abstract
The invention discloses a kind of 750kV high anti-seismic AC system arresters, including grading ring and multiple unit of an arrester, the multiple unit of an arrester is connected in series, the grading ring is located at the upper end of the unit of an arrester on top, the unit of an arrester includes porcelain housing and the insulating cylinder in porcelain housing, several resistor discs are equipped in the insulating cylinder, the insulating cylinder lower end is equipped with piercing rod supporting mechanism, and the insulating cylinder upper end is equipped with piercing rod elasticity press-loading device.The lightning arrester core body internal stability is good, anti-seismic performance is good, stable.
Description
Technical field
The invention belongs to arrester technical fields, and in particular to a kind of 750kV high anti-seismic AC system arrester.
Background technique
For existing skill in 750kV AC transmission system, AC gapless arrester is important protection equipment, is parallel to
In route, damage relevant device because thunder and lightning, switching overvoltage etc. are excessively high for anti-locking system.It is exchanged currently used for 750kV
Arrester in substation is usually composed in series using three to four section porcelain housings or porcelain cover member；This arrester it is main
Defect is that porcelain housing or porcelain housing diameter are thinner, and center of gravity is higher, and integral bending is lower, causes this arrester shock resistance
It is poor, it is not directly applicable 8 degree and above seismic fortification intensity area.
Summary of the invention
The invention reside in the shortcomings of the prior art is solved, provide that a kind of core internal stability is good, antidetonation
Good, the stable 750kV high anti-seismic AC system arrester of performance.
A kind of 750kV high anti-seismic AC system arrester, including grading ring and multiple unit of an arrester, it is the multiple to keep away
Thunder device element is connected in series, and the grading ring is located at the upper end of the unit of an arrester on top, and arrester contour structures are tower-shaped.
The unit of an arrester includes porcelain housing and the insulating cylinder in porcelain housing, is equipped with several in the insulating cylinder
Resistor disc, the insulating cylinder lower end are equipped with piercing rod supporting mechanism, and the insulating cylinder upper end is equipped with piercing rod elasticity press-loading device.
The piercing rod supporting mechanism includes the bottom plate that insulating cylinder bottom is arranged in and connect with insulating cylinder, is set on the bottom plate
There is a lower support sleeve to match with piercing rod, the lower support sleeve is equipped with lower insulating supporting disk, on the lower insulating supporting disk
Equipped with lower insulating cylinder, the lower insulating cylinder is equipped with upper insulating supporting disk, on the lower insulating supporting disk and upper insulating supporting disk
It is equipped with the hole passed through for piercing rod.
The piercing rod elasticity press-loading device includes the top board connecting with insulating cylinder upper end, and the top board has set
Mounted in the righting pressure head of piercing rod, spring is equipped between the righting pressure head and tabletting.
The spring has the lower spring detent being sleeved in piercing rod.
The righting pressure head is equipped with the upper spring locating piece for being sleeved on spring.
The resistor disc has convex block, and the resistor disc upper surface is equipped with the groove to match with convex block.
The cross section of the convex block is triangle or rectangle.
The grading ring is using circle, using aluminum alloy materials, is linked to be an entirety by welding.
The insulating cylinder is formed using high strength glass fiber coiling.
The resistor disc is equipped with through-hole.
The inner groovy across through-hole is offered on the resistor disc.
The arrester is composed in series by three section unit of an arrester, is equipped with positioned at the first segment element crests of tower top and is pressed
Ring uses built-in insulation terminal low-pressure line-outgoing, first segment arrester positioned at third section element (element of the tower bottom) lower end of tower bottom
The porcelain housing outer diameter of element to third section element is gradually increased, and the total height of the arrester is no more than 9m, in the world first passage
Antiseismic test under the conditions of 0.5g horizontal acceleration.750kV high anti-seismic arrester mechanical shock-resistance ability of the invention is strong, can
Meet the use condition in 9 degree of seismic fortification intensity areas.
The porcelain housing includes insulator and flange, and the insulator uses high-strength ceramic product.
Porcelain housing both ends are equipped with above-mentioned flange.
The low-pressure line-outgoing insulated terminal uses poured with epoxy resin product.
The grading ring is using circle, using aluminum alloy materials, is linked to be an entirety by welding.
The built-in insulation terminal low voltage tapping structure includes the seal cover board for being mounted on tower bottom element lower end, is arranged close
Outlet low-voltage insulated terminal on sealing plate, the outlet low-voltage insulated terminal are connect by line bank with insulated column, outlet low-voltage
Insulated terminal passes through seal cover board, is tightly connected between outlet low-voltage insulated terminal and seal cover board by seal assembly.Outlet
Low-voltage insulation terminal and low-voltage ground cable connection.
750kV high anti-seismic arrester of the invention, it has the advantage that: (1), the unit of an arrester are using waney
Tower-shaped design designs each section porcelain housing diameter according to force-bearing situation, improves arrester antidetonation tolerance, can meet 9 degree of antidetonations
Fortification intensity area uses.(2), the grading ring is formed using integral solder, is pressed to arrester pressure.(3), described to keep away
It is composed in series inside thunder device element by several resistor discs, it is compact-sized, it manufactures easy for installation.(4), the insulator of the porcelain housing
It using high strength ceramic material, is made up of high temperature sintering, both ends high strength cement compo mucilage binding flange, flange is using more
Side shape structure, bonding pad are connected using hole, and porcelain housing elasticity modulus reaches 100Gpa or more, and bending resistance breakdown strength reaches 50Mpa
More than, overall performance is excellent.(8), the low-pressure line-outgoing insulated terminal uses embedding structure, reduces arrester whole height, has
Effect improves arrester anti-seismic performance.
750kV high anti-seismic arrester of the present invention is designed using pyramidal structure, and lightning arrester body is by three section unit of an arrester strings
Connection composition, grading ring uses integral solder structure, using built-in low-pressure line-outgoing insulated terminal.Arrester bending resistance shock strength is high,
Overall performance is excellent, has passed through the antiseismic test under the conditions of 0.5g horizontal acceleration, can meet 9 degree of seismic fortification intensity areas
Use.
When in use, inside uses punching rod structure to the device of the invention, and piercing rod sequentially passes through resistor disc, and insulating cylinder
Insulating trip is tightly pressed at together by the elastic hold-down mechanism of upper setting, guarantees that resistor disc does not shake, it is ensured that steady inside core
It is qualitative；The lower part of upper resistor disc is equipped with convex block, and lower resistor disc is equipped with groove, by convex block and matched between resistor disc
Groove structure connection, and so that resistor disc is formed an entirety combination punching resistor disc compression by the pressing plate at insulating cylinder both ends
Rod structure greatly strengthens the intensity of arrester resistance core, increases integral bending, improves arrester arrester antidetonation
Ability.The cross section of the convex block is triangle or rectangle, and two resistor discs, which link together, can not rotate, increased core
The stability of body.Arrester bears the effect of power-frequency voltage for a long time, additionally discontinuously to bear Frequency Transient Overvoltage, thunder and lightning
The result of the effect of the transient overvoltages such as overvoltage and switching overvoltage, the effect of these overvoltage causes inside Zinc-Oxide Arrester
The raising of resistor disc temperature, if Zinc-Oxide Arrester cannot in time distribute heat, resistor disc temperature will be more than a certain
Limiting value causes Zinc-Oxide Arrester heat damage, so that losing keeps arrester ineffective.The resistor disc is equipped with through-hole, if
Pressure release cooling channel is formed after dry resistor disc connection, is accelerated the heat of arrester in the case of a high temperature and is distributed speed, resistance
The through-hole of on piece is staggered successively along the resistor disc center of circle, and after resistor disc crimping, through-hole is cross-linked together, is made on resistor disc
Lose heart by twist, increasing the heat dissipation area heat dissipation effect of resistor disc, to improve arrester reply icing flashover
With the ability of lightning stroke trip failure, the security reliability of arrester is substantially increased.In addition it no longer needs to install gold between resistor disc additional
Belong to cooling fin, to reduce the height of arrester, arrester center of gravity is reduced, and arrester center of gravity is low, and intensity is high, can satisfy water
Flat acceleration is 9 degree of seismic fortification intensity area requirements of 0.5g.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is unit of an arrester structural schematic diagram of the invention；
Fig. 3 is piercing rod supporting mechanism structural schematic diagram of the invention；
Fig. 4 is piercing rod elasticity press-loading device structural schematic diagram of the invention；
Fig. 5 is resistor disc attachment structure schematic diagram of the invention；
Fig. 6 is resistor disc structural schematic diagram of the invention；
Fig. 7 is built-in insulation terminal low voltage tapping structure schematic diagram of the invention；
Fig. 8 is the schematic diagram of insulated terminal low voltage tapping structure in the prior art.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment one: as shown in Figs 1-4, a kind of 750kV high anti-seismic AC system arrester, including grading ring 1 and more
A unit of an arrester 2, the multiple unit of an arrester 2 are connected in series, and the grading ring 1 is located at the unit of an arrester 2 on top
Upper end, arrester contour structures are tower-shaped.
The unit of an arrester 2 includes porcelain housing 10 and the insulating cylinder 6 in porcelain housing 10, is set in the insulating cylinder 6
There are several resistor discs 9, the insulating cylinder lower end is equipped with piercing rod supporting mechanism 12, and the insulating cylinder upper end is equipped with piercing rod bullet
Property press-loading device 13.
The piercing rod supporting mechanism 12 includes that the bottom plate 14 that 6 bottom of insulating cylinder is connect with insulating cylinder 6, the bottom is arranged in
Plate 14 is equipped with the lower support sleeve 17 to match with piercing rod 8, and the lower support sleeve 17 is equipped with lower insulating supporting disk 16, described
Lower insulating supporting disk 16 is equipped with lower insulating cylinder 18, and the lower insulating cylinder 18 is equipped with upper insulating supporting disk 15, the lower insulation
The hole passed through for piercing rod 8 is equipped on support plate 16 and upper insulating supporting disk 15.
The piercing rod elasticity press-loading device 13 includes the top board 19 connecting with 6 upper end of insulating cylinder, the top board 19
The righting pressure head 21 for being sleeved on piercing rod is had, spring 20 is equipped between the righting pressure head 21 and resistor disc.
The spring 20 has the lower spring detent 22 being sleeved in piercing rod.
The righting pressure head is equipped with the upper spring locating piece 28 for being sleeved on spring.
The top board is equipped with slide opening, and the righting pressure head is equipped with the slide bar for protruding into slide opening.
The built-in insulation terminal low voltage tapping structure includes the seal cover board for being mounted on tower bottom element lower end, is arranged close
Outlet low-voltage insulated terminal on sealing plate, the outlet low-voltage insulated terminal are connect by line bank with insulated column, outlet low-voltage
Insulated terminal passes through seal cover board, is tightly connected between outlet low-voltage insulated terminal and seal cover board by seal assembly.Outlet
Low-voltage insulation terminal and low-voltage ground cable connection.
The grading ring is using circle, using aluminum alloy materials, is linked to be an entirety by welding.
The insulating cylinder is formed using high strength glass fiber coiling.
The arrester is composed in series by three section unit of an arrester, is equipped with positioned at the first segment element crests of tower top and is pressed
Ring uses built-in insulation terminal low-pressure line-outgoing, first segment unit of an arrester to third section positioned at the third section element lower end of tower bottom
The porcelain housing outer diameter of element is gradually increased, the arrester is total high to be no more than 9m, and first passage 0.5g level adds in the world
Antiseismic test under velocity conditions.750kV high anti-seismic arrester mechanical shock-resistance ability of the invention is strong, can meet 9 degree of earthquakes
The use condition in fortification intensity area.
The porcelain housing includes insulator and flange, and the insulator uses high-strength ceramic product.
The low-pressure line-outgoing insulated terminal uses poured with epoxy resin product.
The grading ring is using circle, using aluminum alloy materials, is linked to be an entirety by welding.
Embodiment two: as shown in figures 1 to 6, a kind of 750kV high anti-seismic AC system arrester, including grading ring 1 and more
A unit of an arrester 2, the multiple unit of an arrester 2 are connected in series, and the grading ring 1 is located at the unit of an arrester 2 on top
Upper end, the unit of an arrester 2 includes porcelain housing 10 and the insulating cylinder 6 in porcelain housing 10, if being equipped in the insulating cylinder 6
Dry resistor disc 9, the insulating cylinder lower end are equipped with piercing rod supporting mechanism 12, and the insulating cylinder upper end is equipped with piercing rod elasticity pressure
Mounting mechanism 13.
The piercing rod supporting mechanism 12 includes that the bottom plate 14 that 6 bottom of insulating cylinder is connect with insulating cylinder 6, the bottom is arranged in
Plate 14 is equipped with the lower support sleeve 17 to match with piercing rod 8, and the lower support sleeve 17 is equipped with lower insulating supporting disk 16, described
Lower insulating supporting disk 16 is equipped with lower insulating cylinder 18, and the lower insulating cylinder 18 is equipped with upper insulating supporting disk 15, the lower insulation
The hole passed through for piercing rod 8 is equipped on support plate 16 and upper insulating supporting disk 15.
The piercing rod elasticity press-loading device 13 includes the top board 19 connecting with 6 upper end of insulating cylinder, the top board 19
The righting pressure head 21 for being sleeved on piercing rod is had, spring 20 is equipped between the righting pressure head 21 and resistor disc.
The spring 20 has the lower spring detent 22 being sleeved in piercing rod.
The righting pressure head is equipped with the upper spring locating piece 28 for being sleeved on spring.
The top board is equipped with slide opening, and the righting pressure head is equipped with the slide bar for protruding into slide opening.
The built-in insulation terminal low voltage tapping structure includes the seal cover board for being mounted on tower bottom element lower end, is arranged close
Outlet low-voltage insulated terminal on sealing plate, the outlet low-voltage insulated terminal are connect by line bank with insulated column, outlet low-voltage
Insulated terminal passes through seal cover board, is tightly connected between outlet low-voltage insulated terminal and seal cover board by seal assembly.Outlet
Low-voltage insulation terminal and low-voltage ground cable connection.
The resistor disc has convex block 23, and the resistor disc upper surface is equipped with the groove 24 to match with convex block.
The cross section of the convex block is triangle or rectangle.
The grading ring is using circle, using aluminum alloy materials, is linked to be an entirety by welding.
The insulating cylinder is formed using high strength glass fiber coiling.
The resistor disc is equipped with through-hole 25.
The arrester is composed in series by three section unit of an arrester, is equipped with positioned at the first segment element crests of tower top and is pressed
Ring uses built-in insulation terminal low-pressure line-outgoing, first segment unit of an arrester to third section positioned at the third section element lower end of tower bottom
The porcelain housing outer diameter of element is gradually increased, the arrester is total high to be no more than 9m, and first passage 0.5g level adds in the world
Antiseismic test under velocity conditions.750kV high anti-seismic arrester mechanical shock-resistance ability of the invention is strong, can meet 9 degree of earthquakes
The use condition in fortification intensity area.
The porcelain housing includes insulator and flange, and the insulator uses high-strength ceramic product.
The low-pressure line-outgoing insulated terminal uses poured with epoxy resin product.
The grading ring is using circle, using aluminum alloy materials, is linked to be an entirety by welding.
Arrester the top first segment element, the second section element heights 2.74m of centre, bottom third section element 5
Height 2.79m, the 3 insulator outer diameter 345mm of arrester the top first segment element, 4 insulator outer diameter of intermediate second section element
400mm, bottom 5 insulator outer diameter 450mm of third section element.
Embodiment three: as shown in figures 1-8, a kind of 750kV high anti-seismic AC system arrester, including grading ring 1 and more
A unit of an arrester 2, the multiple unit of an arrester 2 are connected in series, and the grading ring 1 is located at the unit of an arrester 2 on top
Upper end, the unit of an arrester 2 includes porcelain housing 10 and the insulating cylinder 6 in porcelain housing 10, if being equipped in the insulating cylinder 6
Dry resistor disc 9, the insulating cylinder lower end are equipped with piercing rod supporting mechanism 12, and the insulating cylinder upper end is equipped with piercing rod elasticity pressure
Mounting mechanism 13.
The piercing rod supporting mechanism 12 includes that the bottom plate 14 that 6 bottom of insulating cylinder is connect with insulating cylinder 6, the bottom is arranged in
Plate 14 is equipped with the lower support sleeve 17 to match with piercing rod 8, and the lower support sleeve 17 is equipped with lower insulating supporting disk 16, described
Lower insulating supporting disk 16 is equipped with lower insulating cylinder 18, and the lower insulating cylinder 18 is equipped with upper insulating supporting disk 15, the lower insulation
The hole passed through for piercing rod 8 is equipped on support plate 16 and upper insulating supporting disk 15.
The piercing rod elasticity press-loading device 13 includes the top board 19 connecting with 6 upper end of insulating cylinder, the top board 19
The righting pressure head 21 for being sleeved on piercing rod is had, spring 20 is equipped between the righting pressure head 21 and resistor disc.
The spring 20 has the lower spring detent 22 being sleeved in piercing rod.
The righting pressure head is equipped with the upper spring locating piece 28 for being sleeved on spring.
The top board is equipped with slide opening, and the righting pressure head is equipped with the slide bar for protruding into slide opening.
The built-in insulation terminal low voltage tapping structure includes the seal cover board 32 for being mounted on tower bottom element lower end, and setting exists
Outlet low-voltage insulated terminal 11 on sealing plate, the outlet low-voltage insulated terminal are connect by line bank 34 with insulated column, out
Line low-voltage insulation terminal passes through seal cover board, is connected between outlet low-voltage insulated terminal and seal cover board by the sealing of seal assembly 33
It connects.Outlet low-voltage insulated terminal is connect with low-voltage ground cable 31.
Porcelain housing both ends are equipped with flange.
The resistor disc has convex block 23, and the resistor disc upper surface is equipped with the groove 24 to match with convex block.
The cross section of the convex block is triangle or rectangle.
The grading ring is using circle, using aluminum alloy materials, is linked to be an entirety by welding.
The insulating cylinder is formed using high strength glass fiber coiling.
The resistor disc is equipped with through-hole 25.
The inner groovy 26 across through-hole is offered on the resistor disc.
The arrester is composed in series by three section unit of an arrester, is equipped with positioned at the first segment element crests of tower top and is pressed
Ring uses built-in insulation terminal low-pressure line-outgoing, first segment unit of an arrester to third section positioned at the third section element lower end of tower bottom
The porcelain housing outer diameter of element is gradually increased, the arrester is total high to be no more than 9m, and first passage 0.5g level adds in the world
Antiseismic test under velocity conditions.750kV high anti-seismic arrester mechanical shock-resistance ability of the invention is strong, can meet 9 degree of earthquakes
The use condition in fortification intensity area.
The porcelain housing includes insulator and flange, and the insulator uses high-strength ceramic product.
The low-pressure line-outgoing insulated terminal uses poured with epoxy resin product.
The grading ring is using circle, using aluminum alloy materials, is linked to be an entirety by welding.
When in use, inside uses punching rod structure to the device of the invention, and piercing rod sequentially passes through resistor disc, and insulating cylinder
Insulating trip is tightly pressed at together by the elastic hold-down mechanism of upper setting, guarantees that resistor disc does not shake, it is ensured that steady inside core
It is qualitative；The lower part of upper resistor disc is equipped with convex block, and lower resistor disc is equipped with groove, by convex block and matched between resistor disc
Groove structure connection, and so that resistor disc is formed an entirety combination punching resistor disc compression by the pressing plate at insulating cylinder both ends
Rod structure greatly strengthens the intensity of arrester resistance core, increases integral bending, improves arrester arrester antidetonation
Ability.The cross section of the convex block is triangle or rectangle, and two resistor discs, which link together, can not rotate, increased core
The stability of body.Arrester bears the effect of power-frequency voltage for a long time, additionally discontinuously to bear Frequency Transient Overvoltage, thunder and lightning
The result of the effect of the transient overvoltages such as overvoltage and switching overvoltage, the effect of these overvoltage causes inside Zinc-Oxide Arrester
The raising of resistor disc temperature, if Zinc-Oxide Arrester cannot in time distribute heat, resistor disc temperature will be more than a certain
Limiting value causes Zinc-Oxide Arrester heat damage, so that losing keeps arrester ineffective.The resistor disc is equipped with through-hole, if
Pressure release cooling channel is formed after dry resistor disc connection, is accelerated the heat of arrester in the case of a high temperature and is distributed speed, resistance
The through-hole of on piece is staggered successively along the resistor disc center of circle, and after resistor disc crimping, through-hole is cross-linked together, is made on resistor disc
Lose heart by twist, increasing the heat dissipation area heat dissipation effect of resistor disc, to improve arrester reply icing flashover
With the ability of lightning stroke trip failure, the security reliability of arrester is substantially increased.In addition it no longer needs to install gold between resistor disc additional
Belong to cooling fin, to reduce the height of arrester, arrester center of gravity is reduced, and arrester center of gravity is low, and intensity is high, can satisfy water
Flat acceleration is 9 degree of seismic fortification intensity area requirements of 0.5g.
Claims (10)
1. a kind of 750kV high anti-seismic AC system arrester, it is characterised in that: including grading ring and multiple unit of an arrester,
The multiple unit of an arrester is connected in series, and the grading ring is located at the upper end of the unit of an arrester on top, arrester shape knot
Structure is tower-shaped.
2. 750kV high anti-seismic AC system arrester as described in claim 1, it is characterised in that: the unit of an arrester
Insulating cylinder including porcelain housing and in porcelain housing, the insulating cylinder is interior to be equipped with several resistor discs, the insulating cylinder lower end
Equipped with piercing rod supporting mechanism, the insulating cylinder upper end is equipped with piercing rod elasticity press-loading device.
3. 750kV high anti-seismic AC system arrester as claimed in claim 2, it is characterised in that: the piercing rod support
Mechanism includes the bottom plate that insulating cylinder bottom is arranged in and connect with insulating cylinder, and the bottom plate is equipped with the lower branch to match with piercing rod
Support set, the lower support sleeve are equipped with lower insulating supporting disk, and the lower insulating supporting disk is equipped with lower insulating cylinder, the lower insulation
Cylinder is equipped with upper insulating supporting disk, is equipped with the hole passed through for piercing rod on the lower insulating supporting disk and upper insulating supporting disk.
4. 750kV high anti-seismic AC system arrester as claimed in claim 3, it is characterised in that: the piercing rod elasticity
Press-loading device includes the top board connecting with insulating cylinder upper end, and the top board has the righting pressure head for being sleeved on piercing rod,
Spring is equipped between the righting pressure head and tabletting.
5. 750kV high anti-seismic AC system arrester as claimed in claim 4, it is characterised in that: the spring has
The lower spring detent being sleeved in piercing rod.
6. 750kV high anti-seismic AC system arrester as claimed in claim 5, it is characterised in that: on the righting pressure head
Equipped with the upper spring locating piece for being sleeved on spring.
7. 750kV high anti-seismic AC system arrester as claimed in claim 6, it is characterised in that: porcelain housing both ends
Equipped with flange.
8. 750kV high anti-seismic AC system arrester as claimed in claim 7, it is characterised in that: positioned at the first of tower top
It saves element crests and grading ring is housed, the porcelain housing outer diameter of the element of first segment unit of an arrester to tower bottom is gradually increased.
9. 750kV high anti-seismic AC system arrester as claimed in claim 8, it is characterised in that: set on the resistor disc
There is through-hole.
10. 750kV high anti-seismic AC system arrester as claimed in claim 9, it is characterised in that: positioned at the element of tower bottom
Lower end uses built-in insulation terminal low voltage tapping structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811514279.XA CN109448945A (en) | 2018-12-11 | 2018-12-11 | A kind of 750kV high anti-seismic AC system arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811514279.XA CN109448945A (en) | 2018-12-11 | 2018-12-11 | A kind of 750kV high anti-seismic AC system arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109448945A true CN109448945A (en) | 2019-03-08 |
Family
ID=65557422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811514279.XA Pending CN109448945A (en) | 2018-12-11 | 2018-12-11 | A kind of 750kV high anti-seismic AC system arrester |
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| CN113223794A (en) * | 2021-05-07 | 2021-08-06 | 大连法伏安电器有限公司 | Composite casing arrester production equipment integrated device |
| CN113773794A (en) * | 2021-08-27 | 2021-12-10 | 金冠电气股份有限公司 | High-barrier PBT-polysiloxane copolymer-based composite material for packaging lightning arrester |
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| CN113223794A (en) * | 2021-05-07 | 2021-08-06 | 大连法伏安电器有限公司 | Composite casing arrester production equipment integrated device |
| CN113773794A (en) * | 2021-08-27 | 2021-12-10 | 金冠电气股份有限公司 | High-barrier PBT-polysiloxane copolymer-based composite material for packaging lightning arrester |
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