CN209625947U - A kind of AC system arrester - Google Patents
A kind of AC system arrester Download PDFInfo
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- CN209625947U CN209625947U CN201822075306.XU CN201822075306U CN209625947U CN 209625947 U CN209625947 U CN 209625947U CN 201822075306 U CN201822075306 U CN 201822075306U CN 209625947 U CN209625947 U CN 209625947U
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- arrester
- insulating cylinder
- piercing rod
- insulating
- spring
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Abstract
The utility model discloses a kind of 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 utility model belongs to arrester technical field, and in particular to a kind of 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.
Utility model content
The utility model aims to solve the shortcomings of the prior art, provide a kind of core internal stability it is good,
Good, the stable AC system arrester of anti-seismic performance.
A kind of AC system arrester, including grading ring and multiple unit of an arrester, the multiple unit of an arrester string
Connection connection, the grading ring are 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.The 750kV high anti-seismic arrester mechanical shock-resistance ability of the utility model
By force, the use condition in 9 degree of seismic fortification intensity areas can be met.
The porcelain housing includes insulator and flange, and the insulator uses high-strength ceramic product.
Porcelain housing both ends are equipped with 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.
The 750kV high anti-seismic arrester of the utility model, it has the advantage that: (1), the unit of an arrester use and differs
The tower-shaped design of diameter designs each section porcelain housing diameter according to force-bearing situation, improves arrester antidetonation tolerance, can meet 9 degree
Seismic fortification intensity area uses.(2), the grading ring is formed using integral solder, is pressed to arrester pressure.(3), institute
It states and is composed in series inside unit of an arrester by several resistor discs, it is compact-sized, it manufactures easy for installation.(4), the porcelain housing
Insulator uses high strength ceramic material, is made up of high temperature sintering, both ends high strength cement compo mucilage binding flange, flange is adopted
With polygonized structure, bonding pad is connected using hole, and porcelain housing elasticity modulus reaches 100Gpa or more, and bending resistance breakdown strength reaches
50Mpa or more, overall performance are excellent.(8), the low-pressure line-outgoing insulated terminal uses embedding structure, and it is whole high to reduce arrester
Degree, effectively improves arrester anti-seismic performance.
The utility model 750kV high anti-seismic arrester is designed using pyramidal structure, and lightning arrester body is by three section arrester members
Part is composed in series, and grading ring uses integral solder structure, using built-in low-pressure line-outgoing insulated terminal.Arrester bending resistance shock strength
Height, 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 intensities
The use in area.
When in use, inside uses punching rod structure to the device of the utility model, and piercing rod sequentially passes through resistor disc, and absolutely
Insulating trip is tightly pressed at together by the elastic hold-down mechanism being arranged on edge cylinder, guarantees that resistor disc does not shake, it is ensured that inside core
Stability；The lower part of upper resistor disc is equipped with convex block, and lower resistor disc is equipped with groove, passes through convex block and therewith phase between resistor disc
Matched groove structure connection, and so that resistor disc is formed an entirety resistor disc compression by the pressing plate at insulating cylinder both ends and combine
Punching rod structure greatly strengthens the intensity of arrester resistance core, increases integral bending, improves arrester arrester
Shock resistance.The cross section of the convex block is triangle or rectangle, and two resistor discs, which link together, can not rotate, and is increased
The stability of big core.Arrester bears the effect of power-frequency voltage for a long time, additionally discontinuously to bear Frequency Transient Overvoltage,
The result of the effect of the transient overvoltages such as lightning surge and switching overvoltage, the effect of these overvoltage leads to Zinc-Oxide Arrester
The raising of internal resistance piece 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 logical
Hole forms pressure release cooling channel, accelerates the heat of arrester in the case of a high temperature and distribute speed after the connection of several resistor discs,
Through-hole on resistor disc is staggered successively along the resistor disc center of circle, and after resistor disc crimping, through-hole is cross-linked together, makes resistor disc
On lose heart by twist, the heat dissipation area heat dissipation effect of resistor disc is increased, to improve arrester reply icing
The ability of flashover and lightning stroke trip failure substantially increases the security reliability of arrester.In addition it no longer needs to add between resistor disc
Metal fin is filled, to reduce the height of arrester, arrester center of gravity is reduced, and arrester center of gravity is low, and intensity is high, Neng Gouman
Sufficient horizontal acceleration is 9 degree of seismic fortification intensity area requirements of 0.5g.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the unit of an arrester structural schematic diagram of the utility model；
Fig. 3 is the piercing rod supporting mechanism structural schematic diagram of the utility model；
Fig. 4 is the piercing rod elasticity press-loading device structural schematic diagram of the utility model；
Fig. 5 is the resistor disc attachment structure schematic diagram of the utility model；
Fig. 6 is the resistor disc structural schematic diagram of the utility model；
Fig. 7 is the built-in insulation terminal low voltage tapping structure schematic diagram of the utility model；
Fig. 8 is the schematic diagram of insulated terminal low voltage tapping structure in the prior art.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
Embodiment one: as shown in Figs 1-4, a kind of AC system arrester, including grading ring 1 and multiple unit of an arrester
2, the multiple unit of an arrester 2 is connected in series, and the grading ring 1 is located at the upper end of the unit of an arrester 2 on top, outside arrester
Shape structure is 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.The 750kV high anti-seismic arrester mechanical shock-resistance ability of the utility model is strong, can meet 9 degree
The use condition in seismic fortification intensity area.
The porcelain housing includes insulator and flange, and the insulator uses high-strength ceramic product.Porcelain housing both ends are set
There is 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.
Embodiment two: as shown in figures 1 to 6, a kind of AC system arrester, including grading ring 1 and multiple unit of an arrester
2, the multiple unit of an arrester 2 is connected in series, and the grading ring 1 is located at the upper end of the unit of an arrester 2 on top, described lightning-arrest
Device element 2 includes porcelain housing 10 and the insulating cylinder 6 in porcelain housing 10, is equipped with several resistor discs 9 in the insulating cylinder 6,
The insulating cylinder lower end is equipped with piercing rod supporting mechanism 12, and the insulating cylinder upper end is equipped with piercing rod elasticity 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 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.The 750kV high anti-seismic arrester mechanical shock-resistance ability of the utility model is strong, can meet 9 degree
The use condition in seismic 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.
Porcelain housing both ends are equipped with flange.
Embodiment three: as shown in figures 1-8, a kind of AC system arrester, including grading ring 1 and multiple unit of an arrester
2, the multiple unit of an arrester 2 is connected in series, and the grading ring 1 is located at the upper end of the unit of an arrester 2 on top, described lightning-arrest
Device element 2 includes porcelain housing 10 and the insulating cylinder 6 in porcelain housing 10, is equipped with several resistor discs 9 in the insulating cylinder 6,
The insulating cylinder lower end is equipped with piercing rod supporting mechanism 12, and the insulating cylinder upper end is equipped with piercing rod elasticity 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 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.
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.The 750kV high anti-seismic arrester mechanical shock-resistance ability of the utility model is strong, can meet 9 degree
The use condition in seismic fortification intensity area.
The porcelain housing includes insulator and flange, and the insulator uses high-strength ceramic product.Porcelain housing both ends are set
There is 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.
When in use, inside uses punching rod structure to the device of the utility model, and piercing rod sequentially passes through resistor disc, and absolutely
Insulating trip is tightly pressed at together by the elastic hold-down mechanism being arranged on edge cylinder, guarantees that resistor disc does not shake, it is ensured that inside core
Stability；The lower part of upper resistor disc is equipped with convex block, and lower resistor disc is equipped with groove, passes through convex block and therewith phase between resistor disc
Matched groove structure connection, and so that resistor disc is formed an entirety resistor disc compression by the pressing plate at insulating cylinder both ends and combine
Punching rod structure greatly strengthens the intensity of arrester resistance core, increases integral bending, improves arrester arrester
Shock resistance.The cross section of the convex block is triangle or rectangle, and two resistor discs, which link together, can not rotate, and is increased
The stability of big core.Arrester bears the effect of power-frequency voltage for a long time, additionally discontinuously to bear Frequency Transient Overvoltage,
The result of the effect of the transient overvoltages such as lightning surge and switching overvoltage, the effect of these overvoltage leads to Zinc-Oxide Arrester
The raising of internal resistance piece 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 logical
Hole forms pressure release cooling channel, accelerates the heat of arrester in the case of a high temperature and distribute speed after the connection of several resistor discs,
Through-hole on resistor disc is staggered successively along the resistor disc center of circle, and after resistor disc crimping, through-hole is cross-linked together, makes resistor disc
On lose heart by twist, the heat dissipation area heat dissipation effect of resistor disc is increased, to improve arrester reply icing
The ability of flashover and lightning stroke trip failure substantially increases the security reliability of arrester.In addition it no longer needs to add between resistor disc
Metal fin is filled, to reduce the height of arrester, arrester center of gravity is reduced, and arrester center of gravity is low, and intensity is high, Neng Gouman
Sufficient horizontal acceleration is 9 degree of seismic fortification intensity area requirements of 0.5g.
Claims (9)
1. a kind of AC system arrester, it is characterised in that: the multiple lightning-arrest including grading ring and multiple unit of an arrester
Device element is connected in series, and the grading ring is located at the upper end of the unit of an arrester on top, arrester contour structures be it is tower-shaped, it is described
Unit of an arrester includes porcelain housing and the insulating cylinder in porcelain housing, several resistor discs are equipped in the insulating cylinder, described
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.
2. AC system arrester as described in claim 1, it is characterised in that: the piercing rod supporting mechanism includes setting
In the bottom plate that insulating cylinder bottom is connect with insulating cylinder, the bottom plate is equipped with the lower support sleeve to match with piercing rod, under described
Support sleeve is equipped with lower insulating supporting disk, and the lower insulating supporting disk is equipped with lower insulating cylinder, and the lower insulating 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.
3. AC system arrester as claimed in claim 2, it is characterised in that: the piercing rod elasticity press-loading device includes
The top board connecting with insulating cylinder upper end, the top board have the righting pressure head for being sleeved on piercing rod, the righting pressure head
Spring is equipped between tabletting.
4. AC system arrester as claimed in claim 3, it is characterised in that: the spring, which has, is sleeved on piercing rod
On lower spring detent.
5. AC system arrester as claimed in claim 4, it is characterised in that: the righting pressure head is equipped with and is sleeved on bullet
The upper spring locating piece of spring.
6. AC system arrester as claimed in claim 5, it is characterised in that: porcelain housing both ends are equipped with flange.
7. AC system arrester as claimed in claim 6, it is characterised in that: the first segment element crests positioned at tower top fill
There is grading ring, the porcelain housing outer diameter of the element of first segment unit of an arrester to tower bottom is gradually increased.
8. AC system arrester as claimed in claim 7, it is characterised in that: the resistor disc is equipped with through-hole.
9. AC system arrester as claimed in claim 8, it is characterised in that: positioned at built in the use of the element lower end of tower bottom
Insulated terminal low voltage tapping structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822075306.XU CN209625947U (en) | 2018-12-11 | 2018-12-11 | A kind of AC system arrester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822075306.XU CN209625947U (en) | 2018-12-11 | 2018-12-11 | A kind of AC system arrester |
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| CN209625947U true CN209625947U (en) | 2019-11-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448945A (en) * | 2018-12-11 | 2019-03-08 | 金冠电气股份有限公司 | A kind of 750kV high anti-seismic AC system arrester |
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2018
- 2018-12-11 CN CN201822075306.XU patent/CN209625947U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109448945A (en) * | 2018-12-11 | 2019-03-08 | 金冠电气股份有限公司 | A kind of 750kV high anti-seismic AC system arrester |
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