CN106469594A - High voltage insulation structure, cable termination, bus, bushing and bushing shell for transformer - Google Patents
High voltage insulation structure, cable termination, bus, bushing and bushing shell for transformer Download PDFInfo
- Publication number
- CN106469594A CN106469594A CN201510512180.6A CN201510512180A CN106469594A CN 106469594 A CN106469594 A CN 106469594A CN 201510512180 A CN201510512180 A CN 201510512180A CN 106469594 A CN106469594 A CN 106469594A
- Authority
- CN
- China
- Prior art keywords
- insulating sleeve
- high pressure
- conductor
- voltage insulation
- high voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Insulators (AREA)
Abstract
High voltage insulation structure, cable termination, bus, bushing and bushing shell for transformer, high voltage insulation structure includes insulating sleeve, insulating sleeve is set in outside conductor, form the insulating space of closing between insulating sleeve and conductor, high pressure equipotential screen is inlaid with insulating sleeve inner surface, conductor is electrically connected with high pressure equipotential screen, is formed and need not fill the compartments such as the high pressure of dielectric between high pressure equipotential screen and conductor insulation.The compartments such as high pressure make the gap between conductor and insulating sleeve need not fill dielectric, on the premise of the reliability guaranteeing dielectric strength, shelf depreciation figureofmerit and performance, significantly reduce product weight, reduce manufacturing cost and improve production and installation effectiveness.Cable termination, bus, bushing and bushing shell for transformer have the high voltage insulation structure of the present invention.
Description
Technical field
The present invention relates to High-Voltage Electrical Appliances field, it is related to a kind of insulation system of mesohigh arrangements of electric connection, specifically
It is related to cable termination using high voltage insulation structure, bus, bushing and bushing shell for transformer.
Background technology
It is known that the position such as outdoor, indoor and GIS in power system, in order that mesohigh is electric
Barrier (as wall, floor, housing of the cabinet of switch cubicle, transformator and chopper etc.) is passed through on road, or
Person in order to keep mesohigh circuit docking ground object insulation, a kind of mesohigh arrangements of electric connection that need to adopt,
As bushing shell for transformer, wall bushing, cable termination, isolated bus etc..Mesohigh electrical connection of the present invention
Device is it is simply that refer to the general name of the products such as these bushing shell for transformer, wall bushing, cable termination, bus.
, it generally comprises the stress cone improving cable termination Root Stress concentration taking existing cable termination as a example
(being also stress set), insulating sleeve (possibly insulator or resin bushing), and exhausted full of inner space
Edge medium (liquid or gas), wherein：The effect of stress cone is to improve cable root electric field intensity, and reducing should
Power is concentrated；The effect of insulating sleeve is to contain stress cone and dielectric, and supports cable terminal and increase
Outer creep age distance, the upper flange of the end of insulating sleeve is fixed on the end of cable conductor, insulating sleeve root
Lower flange be fixed at the ground connection of cable sheath.But because insulating sleeve end is in high potential, at root
In ground potential, interior point electric field intensity is all higher, is easy to produce in the air gap between sleeve and cable
Electric discharge (inclusion punctures, flashover or shelf depreciation), and make insulation damages, thus must filling dielectric,
Guarantee dielectric strength simultaneously makes partial discharge quantity be reduced under standard, could ensure to pacify in longtime running
Entirely.
, generally include conducting rod, the stress cone being enclosed within outside conducting rod taking existing GIS sleeve pipe as a example, contain
Conducting rod and the insulating sleeve of stress cone；Or the condenser type insulating sleeve including conducting rod and containing conducting rod；
Or there is conducting rod, stress cone and condenser type insulating sleeve simultaneously；Regardless of whether being that structure in conducting rod
Generally need to be full of insulation silicone grease/oil, SF6 gas or filled solid insulant such as ring with the space of insulating sleeve
Oxygen tree fat.
, generally include conductor and the insulating sleeve being coated on outside conductor, insulation taking existing isolated bus as a example
Sleeve preferably employs condenser type insulating sleeve, and conductor can also can be contact rod for tubular shape conductor, in conductor
It is full of solid insulator such as epoxy resin with generally needing filling in insulating sleeve.
In sum, existing arrangements of electric connection, no matter insulating sleeve is the insulator fired or extrudes solid
The resin bushing that body insulation is made, for solving the problems, such as the electric discharge that its air gap leads to, must be in insulating sleeve
Filling dielectric (as transformer oil, SF6 gas) and between conductor.And when at the scene insulated sleeve being installed
Filling dielectric is pretty troublesome something, and not only clean environment to be ensured is in addition it is also necessary to use more
Equipment and more complicated technique.And dielectric is likely to result in seepage, if oil leak may be made after running
Become fire, if there is seepage it is also possible to cause environmental pollution or personnel's poisoning in postrun SF6 gas,
Even cause to explode, threaten personal safety and the safety of equipment.If dielectric is filled when producing
Solid insulator then can greatly increase the weight Manufacturing cost of product, and for example, one is filled with solid insulation
The weight of the 10KV capacitor type bushing shell for transformer of medium reaches more than 100 kilogram, and cost is very high, and the present invention one
It is not filled with only about 20 kilograms of the weight of the 10KV capacitor type bushing shell for transformer of dielectric, cost drops significantly
Low.
Content of the invention
It is an object of the invention to overcoming the defect of prior art, provide that a kind of structure is simple, low cost, can
Mesohigh arrangements of electric connection by the high high voltage insulation structure of property and using above-mentioned high voltage insulation structure.
For achieving the above object, present invention employs following technical scheme：
A kind of high voltage insulation structure, including insulating sleeve, insulating sleeve is set in outside conductor, in insulating sleeve
Form the insulating space of closing and conductor between, high pressure equipotential screen is inlaid with insulating sleeve inner surface, leads
Body is electrically connected with high pressure equipotential screen, forms the height that need not fill dielectric between high pressure equipotential screen and conductor
The compartments such as pressure.
Preferably, also include stress set, conductor is coated with insulating layer of conductor, and it is upper that stress set is enclosed within conductor
In one end of insulating space, insulating sleeve inner surface is closely crimped with stress set, and described high pressure equipotential screen is by exhausted
The edge space other end extends to stress set top surface.
Preferably, also include being arranged on the upper flange being fixedly connected conductor and insulating sleeve of insulating sleeve one end
With the grounding device being arranged on insulating sleeve, conductor is electrically connected with high pressure equipotential screen by upper flange, described
High pressure equipotential screen extends to stress set top surface by upper flange.
Preferably, also include stress set, upper flange and ground connection flange, upper flange by insulating sleeve one end with lead
Electric pole is fixed, and stress set is set on conductor, and insulating sleeve contains stress set and mutually closely crimps, insulation
The ground connection flange of the sleeve other end is connected with stress set grounded part, and high pressure equipotential screen is extended to by upper flange should
Power covers top surface.
Preferably, the compartment electric field intensity inside high such as high pressure is zero, and in the compartment such as high pressure, each point current potential is identical.
Preferably, described insulating sleeve is capacitor type insulating sleeve, in the insulating barrier of capacitor type insulating sleeve
Also it is embedded with multiple capacitance plates insulated from each other, wherein outermost capacitance plate is earthy earthing, ground connection
Screen is connected with the grounding device of high voltage insulation structure, and described high pressure equipotential screen is located at multiple capacitance plates and conductor
Between.
Present invention also offers using the cable termination of above-mentioned high voltage insulation structure, bus, bushing and change
Depressor sleeve pipe.
The bushing shell for transformer of the present invention, including the first above-mentioned high voltage insulation structure and the second high voltage insulation structure,
First high voltage insulation structure and the second high voltage insulation structure are equipped with the compartments such as high pressure, the first high voltage insulation structure
Axially it is coaxial docking fixation with the second high voltage insulation structure, be jointly set in outside conductor；Second High-Voltage Insulation knot
Structure can stretch in transformer shell body and be connected with transformator, and the first high voltage insulation structure is externally provided with full skirt.
The high voltage insulation structure being not filled with dielectric of the present invention, forms high between conductor and insulating sleeve
Pressure etc. compartment, make the gap between conductor and insulating sleeve need not fill dielectric, guarantee dielectric strength,
On the premise of the reliability of shelf depreciation figureofmerit and performance, significantly reduce product weight, reduce manufacture
Cost and raising produce and installation effectiveness.
Brief description
Fig. 1 be the present invention a kind of structural representation of cable termination of first embodiment；
Fig. 2 be the present invention a kind of structural representation of bushing shell for transformer of second embodiment；
Fig. 3 be the present invention a kind of structural representation of isolated bus of 3rd embodiment.
Specific embodiment
The embodiment being given with reference to Fig. 1 and Fig. 2, further illustrates the high voltage insulation structure of the present invention
Specific embodiment.The high voltage insulation structure of the present invention is not limited to the following description.
The high voltage insulation structure of the present invention, including insulating sleeve, insulating sleeve can be set in that to be coated with conductor exhausted
The conductor (cable conduction core 7, conducting rod 1 ') of edge outward, forms closing between insulating sleeve and conductor
Insulating space, is inlaid with high pressure equipotential screen on insulating sleeve inner surface, and conductor is electrically connected with high pressure equipotential screen,
Formed between high pressure equipotential screen and conductor insulation and need not fill the compartments such as the high pressure of dielectric.Insulating sleeve
Also include being arranged on the upper flange for being fixedly connected conductor and insulating sleeve for the insulating sleeve one end, be arranged on absolutely
The grounding device for ground connection of the edge sleeve other end, grounding device is preferably grounded flange, can use simultaneously
In being fixedly connected with other devices, high pressure equipotential screen extends to the other end, high pressure equipotential by insulating space one end
Storehouse electric field intensity inside high is zero, and in the compartment such as high pressure, each point current potential is identical.Also can be provided with high voltage insulation structure
For the stress set of all pressures, stress set is enclosed within the one end being located at insulating space on conductor, insulating sleeve inner surface
Closely crimp with stress set, described high pressure equipotential screen extends to stress set top surface by the insulating space other end.Enter
One step insulating sleeve be capacitor type insulating sleeve, be also embedded with the insulating barrier of capacitor type insulating sleeve multiple that
The capacitance plate of this insulation, wherein outermost capacitance plate is earthy earthing, described high pressure equipotential screen
Positioned between multiple capacitance plates and conductor.The high voltage insulation structure of the present invention carries out insulation protection to conductor, fits
For the insulation protection of the arrangements of electric connection of high-tension circuit, be particularly well-suited to dock the insulation protection of ground object and
The high pressure arrangements of electric connection using, such as bushing shell for transformer, wall bushing, cable termination, it is also applied for voltage
The products such as a little isolated bus of more relatively low grade.With the insulation system of the high pressure arrangements of electric connection of prior art not
Together, the insulating sleeve of high pressure arrangements of electric connection insulation system of the present invention and inner conductor (cable conduction
Core, conductive core, contact tube) between space need not fill dielectric, guaranteeing dielectric strength, locally
On the premise of the reliability of electric discharge figureofmerit and performance, significantly reduce product weight, reduce manufacturing cost
Produce and installation effectiveness with improving
Embodiment one
As shown in figure 1, a kind of capacitance type cable terminal being not filled with dielectric of the present invention, including conductive
Bar 1, stress set 2, have upper flange 3 and the capacitor type insulating sleeve 5 of ground connection flange 4, capacitor type insulating
Sleeve 5 and stress set 2 closely crimps, be embedded in capacitor type insulating sleeve 5 inner surface by upper flange 3
Extend to high pressure equipotential screen 6 and the compartments 8 such as cable conduction core 7 composition one high pressure that stress covers 2 top surfaces, in storehouse
Electric field intensity is zero, one group be also embedded with the insulating barrier of the outer capacitor type insulating sleeve of high pressure equipotential screen 6 that
The capacitance plate 9 of this insulation, outermost earthing 10 is grounded flange 4 with lower flange and is connected, along insulation
The outer surface of sleeve 5 and the contact surface along insulating sleeve 5 and stress set 2, capacitance plate 9 upper and lower
All shrink back to lower flange side in staged in edge.
When the capacitance type cable terminal of the present embodiment makes, will have upper flange (for example, aluminium alloy) and connect
Ground flange (for example, aluminium alloy) capacitor type insulating sleeve (for example, by epoxy fibreglass wrapping) with should
Power set (for example, silicone rubber makes) is assembled together, and capacitor type insulating sleeve should closely be crimped with stress set,
Be embedded in capacitor type insulating sleeve interior surface extends to, by upper flange, the high pressure equipotential screen (example that stress covers top surface
As laid in a insulating layer with metal forming or semi-conductive tape) lead the compartments such as core composition one high pressure (in fact with cable
Matter is an air chamber), being also embedded with the insulating barrier of capacitor type insulating sleeve group capacitance plate insulated from each other
(for example, being laid with metal forming or semi-conductive tape), the top edge of these capacitance plates and lower limb are respectively along electricity
The outer surface of appearance type insulating sleeve and the contact covering with stress along capacitor type insulating sleeve are in rank towards ground side
Ladder type is shunk back.To after scene, one section of cable (with the cooperation of capacitance type cable terminal head length) should be peeled off electricity
Cable crust, removes the semi-conductive layer of cable, and end crimping conducting rod, then this is not filled with dielectric
Capacitance type cable terminal be sleeved on the cable peeling crust off, then by fixing for flange architecturally.
Because in insulating sleeve, each point current potential is different, and unavoidably have time when insulating sleeve is assembled with cable
Gas gap, thus existing product must filling dielectric in order to improve dielectric strength and reduce partial discharge quantity.
For exempting to fill dielectric, this patent is arranged on insulating sleeve inwall (or being embedded in the insulation of next-door neighbour's inwall)
At upper flange, (conducting end) extends to a metal equipotential screen or the semiconductive equipotential screen that stress covers top surface, with
The compartments such as a high pressure are constituted, each point current potential is identical in this cavity between cable core (conductor), but electric field
Intensity is zero, is therefore not required to fill dielectric, space and also do not result between insulating sleeve and cable
Electric discharge.Although the equipotential screen that this extends is shorted out the most of of insulating sleeve inner surface insulating, remaining one
Part surface insulation and stress set are fitted close the voltage that still can undertake between conductor and grounding body.This extends
Equipotential screen and conductor between the compartment such as high pressure that constitutes be this patent major technique crucial.
There is upper flange the end of insulating sleeve and leads core and terminal is connected, the root of insulating sleeve have lower flange with
Cable grounding layer and stress set grounded part connect, and the inner surface of insulating sleeve bottom is tight with stress set side
Crimping.Except the above-mentioned inner surface in insulating sleeve or the equipotential screen that arranges extension closest in the insulation of inner surface
It is connected outer with conductor, the earthing also linking with lower flange in the outermost layer setting of insulating sleeve, and in equipotential
In insulating barrier between screen and earthing, several capacitance plates insulated from each other are set.This organizes the upper and lower of capacitance plate
Edge is in ladder respectively along the contact that covers with stress of outer surface and insulating sleeve of insulating sleeve towards ground side
Formula is shunk back.The purpose of this group capacitance plate is, controls the outer surface of insulating sleeve using the principle of capacitance partial pressure
Voltage, making Potential distribution uniformly, improving creeping discharge voltage, thus improving pollution flashover voltage.Control should simultaneously
Power set and the voltage's distribiuting in the close contact face of insulating sleeve, prevent from dodging along insulating sleeve with stress set contact surface
Network.The capacitance plate that this group is arranged in insulating sleeve is another key technology of this patent.
Embodiment two
Referring to Fig. 2, the bushing shell for transformer being not filled with dielectric of the present invention, including conducting rod 1 ', stress
Set 2 ', two ends are equipped with upper flange 3 ' and the insulating sleeve 5 ' being grounded flange 4 '；Conducting rod 1 wraps
It is covered with conducting rod insulating barrier 7 ', insulating sleeve 5 plays insulation around conducting rod 1 and conducting rod insulating barrier 7 '
Protective effect, forms the insulating space of closing between insulating sleeve 5 ' and conducting rod 1 '；Upper flange 3 '
Will be fixing to insulating sleeve 5 ' one end and conducting rod 1 ', stress set 2 ' is set in that conducting rod 1 ' is corresponding to be set
There is the other end at ground connection flange position, the ground connection flange 4 ' of the insulating sleeve 5 ' other end is connect with stress set 2 '
Ground part connects, and insulating sleeve 5 ' contains stress set 2 ' and mutually closely crimps, in upper flange 3 and stress
Form the space being not filled with dielectric of closing between set 2；The inner surface of insulating sleeve 5 ' is inlaid with
High pressure equipotential screen 6 ', conducting rod 1 ' is electrically connected with high pressure equipotential screen 6 ' by upper flange 3 ', high pressure etc.
Position screen 6 ' constitutes pressure equipotential by upper flange 3 ' along the top surface axially extending to stress set 2 ' of conducting rod 1 '
Storehouse 8 '；Insulating sleeve 5 ' can adopt capacitor type insulating sleeve, in the insulating barrier of capacitor type insulating sleeve
Also it is embedded with multiple capacitance plates 9 ' insulated from each other, outermost capacitance plate is as earthing 10 ' and ground connection method
Blue 4 ' connections, the axial dimension of multiple capacitance plates 9 ' successively shortens from inside to outside, shrinks back in staged in side.
The present embodiment employs stress set 2 simultaneously and two kinds of electric field pressure-equalizing devices of capacitor type insulating sleeve are best to realize
Voltage equalizing, actually only using the insulating sleeve of stress set 2 and noncapacitive type, or only using capacitor type
The capacitance cone of insulating sleeve all pressed also possible, certainly also possible using other pressure-equalizing devices.
When only all being pressed using the capacitance cone of capacitor type insulating sleeve, can not coated with conductive bar on conducting rod 1 '
Insulating barrier 7 '.The present embodiment is the bushing shell for transformer connecting external conductor and transformator, the height of certain present invention
Pressure insulation system can be used for all kinds of bushings such as bushing shell for transformer, wall bushing, GIS sleeve pipe.
When making, will be equipped with the insulating sleeve 5 of upper flange 3 and ground connection flange 4 with to be coated with conducting rod exhausted
The conducting rod 1 ' of edge layer 7 ', stress set 2 ' are assembled together, and insulating sleeve 5 ' should be closely with stress set 2 '
Crimping.Upper flange 3 ' and ground connection flange 4 ' can be made using aluminium alloy, and upper flange 3 ' can be using all
Pressure ring is realized, and stress set 2 ' can be made using silicone rubber.Described insulating sleeve 5 adopts fiber glass epoxy
Or other heat cured insulation materials make, its profile is cone or cylindrical shape；Insulating sleeve 5 can adopt
Capacitor type insulating sleeve.Described conducting rod insulating barrier 7 ' is used for the diametral voltage that insulate, and it adopts known work
Skill is coated on conducting rod 1.Conducting rod 1 can also be able to be tubular shape conductor for contact rod.
In order to ensure still ensuring that dielectric strength after being not filled with dielectric and making partial discharge quantity be reduced to mark
Standard, the important measures that the present invention takes are to form the height of closing in the cavity being not filled with dielectric
The compartments 8 ' such as pressure, the current potential of each point in this cavity is identical and electric field intensity is zero, and described high pressure etc.
Compartment 8 ' axially surrounds described conducting rod 1 ' in the range of length L.The compartments 8 ' such as described high pressure
Cavity be tube-shaped structure, this structure is by the conducting rod insulating barrier 7 ' on conducting rod 1 ', high pressure equipotential screen
6 ', the top surface on upper flange 3 ' and stress set 2 ' surrounds.It should be appreciated that arriving：The compartments such as high pressure have
Axial length L is because the current potential of each point in the compartments such as high pressure 8 is identical and electric field intensity is zero, therefore, high
The compartments 8 such as pressure serve the uniformly effect axially along face voltage, to eliminate due to uneven axially along face voltage
The harm that flashover being led to etc. destroys dielectric strength and increases partial discharge quantity；Described axial length L with
The ratio of the axial height H of insulating sleeve is bigger, then the ability that insulating sleeve undertakes axially along face voltage is stronger；
On the contrary, if the ratio very little of described axial length L and the axial height H of insulating sleeve, such as in insulation sleeve
The small-sized cavity of setting in cylinder, then the objective effect of these areolas differs and surely plays uniform axial direction
Effect along face voltage；On the other hand, theoretically, axial length L is maximum with the ratio of axial height H
Can reach 1, but 1 can not possibly be reached in some embodiments, embodiment as depicted in figs. 1 and 2, due to
Also need in the insulating sleeve of its capacitor type to inlay capacitance plate, and capacitance plate needs increase to cannot be used for high pressure equipotential
The axial height H of the insulating sleeve in storehouse.Therefore, a kind of preferred scheme is, the axle of the compartment such as described high pressure
It is more than 0.2 and is less than or equal to 1 to the ratio of length L and the axial height H of insulating sleeve.
The current potential of each point in order to be better achieved in the compartments such as high pressure is identical and electric field intensity is zero, to guarantee
Uniformly axially along the effect of face voltage, described high pressure equipotential screen is electrically connected with conductor by upper flange.Fig. 1
With the embodiment shown in Fig. 2, because upper flange 3 is made using the aluminium alloy with good electric conductivity, described
Conducting rod 1 electrically connected with high pressure equipotential screen 6 by upper flange 3 it is clear that this structure is not only simple, and
And can ensure that the intensity of electrical connection between conducting rod 1 and high pressure equipotential screen 6 and reliability.Certainly, do not arrange
Except other structures mode, such as upper flange 3 adopts non-conducting material, or upper flange 3 can not be with conducting rod 1
And/or high pressure equipotential screen 6 closely crimps, in these cases, described conducting rod 1 can be by wire and height
Pressure equipotential screen 6 electrically connects.
The embodiment of the bushing shell for transformer being given referring to Fig. 2, exhausted including two high pressure being set in outside conducting rod
Edge structure, two high voltage insulation structure are provided with the compartments 8 ' such as high pressure, by respective ground connection flange 4 ' axially
Be coaxial docking fixation.The ground connection flange 4 ' of this bushing shell for transformer, insulating sleeve 5 ', stress set 2 ' and height
The compartments 8 ' such as pressure are respectively two sets.The high voltage insulation structure on top is by upper flange 3 ', insulating sleeve 5 '
High pressure equipotential screen 6 ', stress set 2 ' and conducting rod insulating barrier 7 ' form the compartments 8 ' such as a high pressure,
The insulating sleeve 5 ' on top is externally provided with full skirt.The high voltage insulation structure of bottom is by the high pressure etc. of insulating sleeve 5 '
Form one between position screen 6 ', stress set 2 ', conducting rod insulating barrier 7 ' and the connector being connected with transformator
The compartments 8 ' such as individual high pressure.The beneficial effect of the Insulation Scheme of this stagewise, can make sleeve pipe be easy to produce and
The each section of requirement that can meet different use environments or use condition respectively, for example, below bushing shell for transformer
That section can be used in the transformer oil extending in transformator (not shown), and that section of top
Can expose in atmosphere, up can be provided with, outside the insulating sleeve of section, the full skirt that silicone rubber is made.
Embodiment shown in from Fig. 2 can obtain following inspiration, the high pressure being not filled with dielectric of the present invention
Insulation system, also can be according to purposes using the stagewise schemes covering insulation system docking more.The such as present invention
The structure of becoming attached to being not filled with dielectric can also be applied on isolated bus.Isolated bus is used for distribution
In device, each current-carrying duplexure links together, and has the effect collecting and distributing electric power, such as can connect
It is connected between electromotor and transformator, be connected between transformator and high-tension switch cabinet.Isolated bus is substantially
Exactly a section insulated wire section is coupled together by adapter, every section of insulated wire section generally includes conductor and bag
Overlay on the insulation system outside conductor, insulation system preferably employs condenser type insulation system, conductor can be tubulose
Conductor can also be contact rod.Actually each section of isolated bus line segment is exactly a sleeve pipe, therefore each
On the conductor of section isolated bus line segment, high voltage insulation structure is set, forms high pressure between insulation system and conductor
Etc. compartment, the usage amount of insulant can be reduced, substantially reduce cost.
Embodiment three
Specific as shown in figure 3, a kind of isolated bus of the embodiment of the present invention three, the tubulose of isolated bus is led
Body 1 " is externally provided with insulating sleeve 5 ", tubular shape conductor 1 " and insulating sleeve 5 " between formed envelope
The insulating space closing, in insulating sleeve 5 " it is inlaid with high pressure equipotential screen 6 on inner surface ", tubulose is led
Body 1 " and high pressure equipotential screen 6 " electrically connects, in high pressure equipotential screen 6 " and insulating barrier 7 " between
Formation need not fill the compartments such as the high pressure of dielectric 8 ", insulating sleeve 5 " insulating barrier in be also embedded with
Multiple capacitance plates 9 insulated from each other ", outermost capacitance plate is as earthing 10 " and ground terminal 4 '
Connect, the axial dimension of multiple capacitance plates 9 ' successively shortens from inside to outside, shrinks back in staged in side.This enforcement
Isolated bus all pressed only with the capacitance cone of capacitor type insulating sleeve；In addition also may be used in insulating space
To arrange stress set, now need to be in tubular shape conductor 1 " outsourcing insulating layer coating, high pressure equipotential screen 6 is by one end edge
The top surface of the stress set axially extending to the conductor other end of conductor constitutes the compartments such as high pressure.Insulating sleeve 5 "
With tubular shape conductor 1 " solid insulating material 3 can be passed through " it is connected it is also possible to be connected by flange,
Can also using the special adapter of isolated bus connect (can be also used for being connected with another section of bus) or its
Its attachment structure, is only needed for fixed conductor and insulation system, and electric connecting conductor with high pressure equipotential screen is
Can.
In sum, the present invention is due to employing the structure of the compartments such as high pressure 8, and a series of knots accordingly
Structure improves, and not only solves the problem that high pressure arrangements of electric connection need not fill dielectric, and thus produces
Mitigate product weight, reduce manufacturing cost beneficial effect, and, also solve be not filled with insulation be situated between
Guarantee the reliability of dielectric strength, shelf depreciation figureofmerit and performance on the premise of matter, and also can effectively drop
The manufacture difficulty of low yield product, and the manufacturing cost being caused by manufacture difficulty, and also production can be effectively improved
Efficiency.Compared with prior art, the present invention also has advantage in greater detail below：
1. insulating sleeve and conducting rod fit-up gap are in the compartments such as high pressure it is not necessary to filling dielectric, more
Do not result in seepage, not only energy-saving and environmental protection, and safe and reliable.
2. in-site installation construction is very convenient, efficient, taking cable termination as a example, the electricity at the compartment such as high pressure position
Cable insulating surface need not polish smooth, and saves a lot of times.
3., due to the presence of multiple capacitance plates, control stress set and capacitor type insulating barrel contacts face and outer
The electric potential gradient on surface, makes electric potential gradient all ratios of inside and outside insulation more uniform, not only increases insulated sleeve
Electric strength, more improve creeping discharge voltage, thus improve pollution flashover voltage, also extending insulation sleeve
The service life of pipe.
4. according to actual field condition, can suitably adjust the length of capacitor type insulating sleeve pipe equipotential screen,
Or lead core using one section of conductor jumper, thus solve the reality such as cable falls short of and installing space is limited
Installation question.
Above content is further description made for the present invention with reference to specific preferred implementation, no
Can assert the present invention be embodied as be confined to these explanations.Common for the technical field of the invention
For technical staff, without departing from the inventive concept of the premise, can also make and some simple deduce or replace
Change, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a kind of high voltage insulation structure, including insulating sleeve, insulating sleeve is set in outside conductor, in insulation sleeve
Cylinder and conductor between formed closing insulating space it is characterised in that：Insulating sleeve inner surface is inlaid with
High pressure equipotential screen, conductor is electrically connected with high pressure equipotential screen, is formed and need not fill out between high pressure equipotential screen and conductor
Fill the compartments such as the high pressure of dielectric.
2. high voltage insulation structure according to claim 1 it is characterised in that：Also include stress set, lead
It is coated with insulating layer of conductor in vitro, stress set is enclosed within the one end being located at insulating space on conductor, in insulating sleeve
Surface is closely crimped with stress set, and described high pressure equipotential screen extends to stress set top surface by the insulating space other end.
3. high voltage insulation structure according to claim 2 it is characterised in that：Also include being arranged on insulation
Sleeve one end be fixedly connected the upper flange of conductor and insulating sleeve and the grounding device being arranged on insulating sleeve,
Conductor is electrically connected with high pressure equipotential screen by upper flange, and described high pressure equipotential screen extends to stress set by upper flange
Top surface.
4. high voltage insulation structure according to claim 1 it is characterised in that：Also include stress set, on
Flange and ground connection flange, insulating sleeve one end and conducting rod are fixed by upper flange, and stress set is set on conductor,
Insulating sleeve contains stress set and mutually closely crimps, and the ground connection flange of the insulating sleeve other end is socketed with stress
Ground part connects, and high pressure equipotential screen extends to stress set top surface by upper flange.
5. high voltage insulation structure according to claim 1 it is characterised in that：The compartment internal electric field such as high pressure
Intensity is zero, and in the compartment such as high pressure, each point current potential is identical.
6. according to the arbitrary described high voltage insulation structure of claim 1-5 it is characterised in that：Described insulation sleeve
Cylinder is capacitor type insulating sleeve, is also embedded with multiple electricity insulated from each other in the insulating barrier of capacitor type insulating sleeve
Rong Ping, wherein outermost capacitance plate is earthy earthing, the ground connection of earthing and high voltage insulation structure
Device connects, and described high pressure equipotential screen is located between multiple capacitance plates and conductor.
7. a kind of cable termination it is characterised in that：Including the arbitrary described High-Voltage Insulation knot of claim 1-5
Structure.
8. a kind of bus it is characterised in that：Including the arbitrary described high voltage insulation structure of claim 1-5.
9. a kind of bushing it is characterised in that：Including the arbitrary described High-Voltage Insulation knot of claim 1-5
Structure.
10. a kind of bushing shell for transformer it is characterised in that：Including arbitrary the first described height of claim 1-5
Pressure insulation system and the second high voltage insulation structure, the first high voltage insulation structure and the second high voltage insulation structure are all provided with
The compartments such as high pressure, the first high voltage insulation structure and the second high voltage insulation structure is had axially to be coaxial docking fixation, altogether
It is set in outside conductor together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510512180.6A CN106469594B (en) | 2015-08-19 | 2015-08-19 | Bushing shell for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510512180.6A CN106469594B (en) | 2015-08-19 | 2015-08-19 | Bushing shell for transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106469594A true CN106469594A (en) | 2017-03-01 |
| CN106469594B CN106469594B (en) | 2018-05-29 |
Family
ID=58214142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510512180.6A Active CN106469594B (en) | 2015-08-19 | 2015-08-19 | Bushing shell for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106469594B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634496A (en) * | 2017-08-01 | 2018-01-26 | 全球能源互联网研究院 | A kind of high voltage direct current cable line terminal |
| CN108630361A (en) * | 2018-08-02 | 2018-10-09 | 江苏神马电力股份有限公司 | A kind of insulating sleeve |
| CN108962565A (en) * | 2018-08-28 | 2018-12-07 | 山东电力设备有限公司 | A kind of bushing shell for transformer with multi-screen structure |
| CN110571000A (en) * | 2018-06-05 | 2019-12-13 | 沈阳和新套管有限公司 | Manufacturing method of anti-cracking dry-type capacitive sleeve conductive tube |
| CN112018652A (en) * | 2020-08-26 | 2020-12-01 | 西安神电(泾阳)电器有限公司 | Environment-friendly inflatable switch cabinet |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3210563A1 (en) * | 1982-03-23 | 1983-10-13 | Felten & Guilleaume Energietechnik GmbH, 5000 Köln | End closure for high-voltage cables of different construction |
| JP2003189454A (en) * | 2001-12-19 | 2003-07-04 | Mitsubishi Cable Ind Ltd | Capacitor cone |
| CN2582240Y (en) * | 2002-11-01 | 2003-10-22 | 许建国 | Dry, prefabricated and capacitance type cable terminal |
| CN201340770Y (en) * | 2008-11-28 | 2009-11-04 | 天水长城开关厂有限公司 | Wall bushing |
| CN102568659A (en) * | 2010-12-18 | 2012-07-11 | 仝志红 | Externally shielded type capacitance insulated outlet bus |
| CN103532081A (en) * | 2013-09-20 | 2014-01-22 | 天津沃尔法电力设备有限公司 | Stress cone and capacitive composite insulating high-voltage cable terminal for overhead line |
| CN205050651U (en) * | 2015-08-19 | 2016-02-24 | 北京天威瑞恒高压套管有限公司 | High -tension bushing and isolated bus |
| CN105743053A (en) * | 2014-12-08 | 2016-07-06 | 北京瑞恒新源投资有限公司 | Capacitive cable terminal without insulating medium filling |
-
2015
- 2015-08-19 CN CN201510512180.6A patent/CN106469594B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3210563A1 (en) * | 1982-03-23 | 1983-10-13 | Felten & Guilleaume Energietechnik GmbH, 5000 Köln | End closure for high-voltage cables of different construction |
| JP2003189454A (en) * | 2001-12-19 | 2003-07-04 | Mitsubishi Cable Ind Ltd | Capacitor cone |
| CN2582240Y (en) * | 2002-11-01 | 2003-10-22 | 许建国 | Dry, prefabricated and capacitance type cable terminal |
| CN201340770Y (en) * | 2008-11-28 | 2009-11-04 | 天水长城开关厂有限公司 | Wall bushing |
| CN102568659A (en) * | 2010-12-18 | 2012-07-11 | 仝志红 | Externally shielded type capacitance insulated outlet bus |
| CN103532081A (en) * | 2013-09-20 | 2014-01-22 | 天津沃尔法电力设备有限公司 | Stress cone and capacitive composite insulating high-voltage cable terminal for overhead line |
| CN105743053A (en) * | 2014-12-08 | 2016-07-06 | 北京瑞恒新源投资有限公司 | Capacitive cable terminal without insulating medium filling |
| CN205050651U (en) * | 2015-08-19 | 2016-02-24 | 北京天威瑞恒高压套管有限公司 | High -tension bushing and isolated bus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634496A (en) * | 2017-08-01 | 2018-01-26 | 全球能源互联网研究院 | A kind of high voltage direct current cable line terminal |
| CN110571000A (en) * | 2018-06-05 | 2019-12-13 | 沈阳和新套管有限公司 | Manufacturing method of anti-cracking dry-type capacitive sleeve conductive tube |
| CN108630361A (en) * | 2018-08-02 | 2018-10-09 | 江苏神马电力股份有限公司 | A kind of insulating sleeve |
| CN108962565A (en) * | 2018-08-28 | 2018-12-07 | 山东电力设备有限公司 | A kind of bushing shell for transformer with multi-screen structure |
| CN112018652A (en) * | 2020-08-26 | 2020-12-01 | 西安神电(泾阳)电器有限公司 | Environment-friendly inflatable switch cabinet |
| CN112018652B (en) * | 2020-08-26 | 2022-06-14 | 西安神电(泾阳)电器有限公司 | Environment-friendly inflatable switch cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106469594B (en) | 2018-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106469594B (en) | Bushing shell for transformer | |
| CN102906955B (en) | High-voltage direct-current cable terminal device | |
| US9048652B2 (en) | Cable termination device, a method for prefabricating a cable termination device and a method for achieving a cable termination | |
| US20140076624A1 (en) | Cable Termination Device, A Method For Prefabricating A Cable Termination Device And A Method For Achieving A Cable Termination | |
| CN205050651U (en) | High -tension bushing and isolated bus | |
| CN105743053B (en) | A kind of capacitance type cable terminal being not filled with dielectric | |
| CN103038965A (en) | A high voltage direct current cable termination apparatus | |
| CN207366687U (en) | A kind of cable T connector scene overpressure resistance detecting device | |
| CA3015415C (en) | Large-capacitance insulating core, high-voltage electrical appliance and multi-functional high-voltage bushing | |
| CN206712441U (en) | A kind of oil-filled outdoor cable terminals of 110kV | |
| CN205542212U (en) | Exempt from insulating sleeve pipe of capacitanc of packing | |
| CN106997798A (en) | Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling | |
| CN100449653C (en) | High-pressure insulation core with lining layer | |
| CN204720940U (en) | A kind of elbow cable joint | |
| CN201247663Y (en) | Whole insulation composite greatcoat type metal-oxide lighting arrester core body | |
| CN104332258B (en) | The high-voltage wall bushing improved | |
| CN204167022U (en) | A kind of high-voltage wall bushing | |
| CN114927330A (en) | Insulating bin type low-power consumption high-voltage transformer | |
| CN208690037U (en) | A kind of arrester | |
| US2423596A (en) | Termination for high-tension electric cables | |
| CN2497415Y (en) | Dry-type high-voltage current transformer | |
| CN110492425A (en) | A kind of indoor and outdoor terminal of novel high-pressure power cable | |
| CN207719787U (en) | Outdoor high voltage cable branch box | |
| CN216413899U (en) | Pluggable dry-type outdoor terminal of high-voltage power cable | |
| CN219800639U (en) | Cable-penetrating type glass fiber reinforced plastic dry-type capacitor type porcelain-sleeved transformer sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |