CN106997798A - Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling - Google Patents

Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling Download PDF

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Publication number
CN106997798A
CN106997798A CN201610053321.7A CN201610053321A CN106997798A CN 106997798 A CN106997798 A CN 106997798A CN 201610053321 A CN201610053321 A CN 201610053321A CN 106997798 A CN106997798 A CN 106997798A
Authority
CN
China
Prior art keywords
condenser type
core body
insulation core
filling
exempting
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.)
Pending
Application number
CN201610053321.7A
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Chinese (zh)
Inventor
刘朝辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANWEI RUIHENG HIGH-PRESSURE CASING-TUBE Co Ltd BEIJING
Original Assignee
TIANWEI RUIHENG HIGH-PRESSURE CASING-TUBE Co Ltd BEIJING
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TIANWEI RUIHENG HIGH-PRESSURE CASING-TUBE Co Ltd BEIJING filed Critical TIANWEI RUIHENG HIGH-PRESSURE CASING-TUBE Co Ltd BEIJING
Priority to CN201610053321.7A priority Critical patent/CN106997798A/en
Publication of CN106997798A publication Critical patent/CN106997798A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/26Lead-in insulators; Lead-through insulators
    • H01B17/28Capacitor type
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/29Terminals; Tapping arrangements for signal inductances
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/32Insulating of coils, windings, or parts thereof

Abstract

Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling, including condenser type insulation core body, the condenser type insulation core body overcoat has hollow insulator, there is the gap for exempting from filling between hollow insulator and condenser type insulation core body, provided with multiple capacitance plates being arranged alternately with insulating barrier in the condenser type insulation core body, wherein outermost capacitance plate is earthy ground connection end shield.The present invention, without fill insulant, without vacuumizing, retains common atmospheric air, simple in construction, cost is low and assembles easy to maintenance in the gap between hollow insulator and electric capacity core body.

Description

Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling
Technical field
The present invention relates to high voltage electric equipment field, it is related to a kind of condenser type Insulating A High-Voltage for exempting from filling and electrically sets It is standby.
Background technology
It is well known that in power system, in order to ensure the reliable insulation between high-tension line and ground potential, Some high voltage electric equipments, such as electrical equipment sleeve pipe, wall bushing, cable termination, transformer need to be used Deng.High voltage electric equipment of the present invention, is exactly to these electrical equipment sleeve pipe, wall bushing, cables The general designation of the products such as terminal, transformer.
In above-mentioned high voltage electric equipment, major insulation and the insulating coating being enclosed on outside major insulation are typically provided with, All the time, those skilled in the art think that the gap between the major insulation and external insulation of High-Voltage Electrical Appliances must Must fill insulant.By taking existing dry sleeve as an example, generally using electric capacity core body as sleeve pipe major insulation, by The extraordinary insulating paper through epoxy impregnation, which is rolled, under vacuo forms;It is (hollow exhausted that capacitance core body is located at insulating coating Edge) in, the insulating coating is usually insulator or composite hollow insulator.After sleeve pipe is assembled, exhausted Fill insulant to be to eliminate the air gap between electric capacity core body and insulating coating in edge overcoat, filling it is exhausted Edge material be generally silicone grease cream-like or flexible polyurethane foam or outstanding lucky Neil paste or Transformer oil or SF6 gases etc..Existing sleeve pipe needs to fill insulation between insulating coating and electric capacity core body Material, cost is higher.And when it come to filling will be related to corresponding sealing structure, monitoring device is sealed With detection process, make the complicated of sleeve pipe, so can further improve product cost again, and add production The complexity that product assembling is safeguarded.
The content of the invention
It is an object of the invention to overcome the defect of prior art there is provided a kind of simple in construction, cost it is low, exempt from The condenser type Insulating A High-Voltage electrical equipment of filling.
To achieve the above object, present invention employs following technical scheme:
A kind of condenser type Insulating A High-Voltage electrical equipment for exempting from filling, including condenser type insulation core body, the electric capacity Formula insulation core body overcoat has hollow insulator, exists between hollow insulator and condenser type insulation core body and exempts to fill out Provided with multiple capacitance plates being arranged alternately with insulating barrier in the gap filled, the condenser type insulation core body, wherein Outermost capacitance plate is earthy ground connection end shield.
It is preferred that, the axial dimension of multiple capacitance plates in the condenser type insulation core body successively contracts from inside to outside It is short, and two ends shrink back to middle part in staged.
It is preferred that, described hollow insulator is insulator.
It is preferred that, in addition to upper flange, lower flange and voltage equalizing ball, upper flange and lower flange and hollow insulator It is fixedly connected, mounting flange is fixedly connected with condenser type insulation core body and lower flange, and mounting flange is provided with End shield terminal, the ground connection end shield of condenser type insulation core body is electrically connected with end shield terminal.
It is preferred that, anti-moisture mechanism for electric is provided between described hollow insulator and condenser type insulation core body.
It is preferred that, the inner surface of the insulator and/or the outer surface of condenser type insulation core body are by spraying hydrophobicity The mode of material is provided with insulating barrier.
It is preferred that, unidirectional natural air-exhaust device is provided between hollow insulator and the condenser type insulation core body.
It is preferred that, it is provided with 3A molecular sieve desiccants in the junction of hollow insulator and condenser type insulating core.
It is preferred that, high pressure equipotential screen is provided with the inner surface of condenser type insulation core body, positioned at condenser type insulation Conductor in core body is electrically connected with high pressure equipotential screen, forms exhausted without filling between high pressure equipotential screen and conductor The compartments such as the high pressure of edge medium, are provided with stress set between conductor and condenser type insulation core body.
It is preferred that, in addition to upper flange for fixed capacity formula insulation core body, hollow insulator and conductor and Flange is grounded, conductor is electrically connected by the upper flange of one end with high pressure equipotential screen, and stress set is set on conductor Positioned at ground connection flange one end, ground connection flange is connected with stress set grounded part, and high pressure equipotential screen is prolonged by upper flange Extend stress set top surface;The axial dimension of multiple capacitance plates in condenser type insulation core body successively contracts from inside to outside It is short, and prolong axially shunk back from upper flange to ground side in staged.
The condenser type Insulating A High-Voltage electrical equipment for exempting from filling of the present invention is between hollow insulator and electric capacity core body Gap in without fill insulant, without vacuumizing, retain common atmospheric air, it is simple in construction, Cost is low and assembles easy to maintenance.
Brief description of the drawings
Fig. 1 is a kind of structural representation of bushing shell for transformer of first embodiment of the present invention;
Fig. 2 is a kind of structural representation of cable termination of second embodiment of the present invention;
Embodiment
A kind of condenser type Insulating A High-Voltage electrical equipment for exempting from filling, including condenser type insulation core body, the electric capacity Formula insulation core body overcoat has hollow insulator, exists between hollow insulator and condenser type insulation core body and exempts to fill out Provided with multiple capacitance plates being arranged alternately with insulating barrier in the gap filled, the condenser type insulation core body, wherein Outermost capacitance plate is earthy ground connection end shield.
The condenser type Insulating A High-Voltage electrical equipment for exempting from filling of the present invention is in hollow insulator and condenser type insulating core Any oil, glue, gas or solid insulating material need not be filled in gap 4 between body, without vacuumizing, Retain common atmospheric air;Simple in construction, lightweight, cost is low, convenient for installation and maintenance.It is applicable to The high-tension apparatuses such as electrical equipment sleeve pipe, wall bushing, cable termination, transformer.Below in conjunction with the present invention Bushing shell for transformer and the embodiment of cable termination be further described, the of the invention condenser type for exempting from filling Insulating A High-Voltage electrical equipment is not limited to the following description.
Embodiment one
The bushing shell for transformer of the condenser type for the exempting from filling insulation of the present invention, including high-voltage connection terminal 1, upper flange 2nd, hollow insulator 3, condenser type insulation core body 5, lower flange 6, end shield terminal 7, mounting flange 8 and Pressure ball 9.Condenser type insulation core body 5 is coated on outside contact tube, has hollow exhausted in the overcoat of condenser type insulation core body 5 , there is the gap 4 for exempting from filling between hollow insulator 3 and condenser type insulation core body 5 in edge 3.The electricity Appearance formula insulation core body 5 is dry-type capacitance core body, is handed in condenser type insulation core body 5 provided with multiple with insulating barrier For the capacitance plate 51 of setting, wherein outermost capacitance plate is ground connection end shield, the ground connection end shield and end shield terminal 7 electrical connections;Further, the axial dimension of multiple capacitance plates 51 successively shortens from inside to outside, and two ends to Shunk back in staged at middle part.The hollow insulator 3 is insulator, and insulator is enclosed on condenser type insulation core body 5 Upper end, upper flange 2 and lower flange 6 are fixedly connected with hollow insulator 3, and mounting flange 8 and condenser type are exhausted Edge core body 5 and lower flange 6 are fixedly connected with the installation for bushing shell for transformer, one covered in bushing shell for transformer End is provided with high-voltage connection terminal 1, and the other end is provided with voltage equalizing ball 9;Mounting flange 8 is provided with end shield terminal 7, The ground connection end shield of condenser type insulation core body 5 is electrically connected with end shield terminal 7.Bushing shell for transformer is cased with hollow insulation The upper end of son 3 can be connected with external current conductor, and lower end extend into transformer shell body and electrically connected with transformer, And be fixedly connected by mounting flange 8 with transformer shell.
The condenser type insulating transformer sleeve pipe for exempting from filling of the present invention is in hollow insulator 3 and condenser type insulating core Any oil, glue, gas or solid insulating material need not be filled in gap 4 between body 5, without vacuumizing, Retain common atmospheric air.Field strength is reduced by multiple capacitance plates and Electric Field Distribution is uniform, inside insulator only Atmospheric air need to be kept, can be in order to avoid fill any other dielectric;Due to other insulating materials need not be filled, Also just without special encapsulation process, more need not subsequently corresponding air tightness detection equipment and detection process, So that bushing shell for transformer structure is greatly simplified, cost is substantially reduced, and it, which is assembled, safeguards also simpler.For example Due to that need not fill insulating oil, conservator structure and sealing structure also need not be just set on bushing shell for transformer, tied Structure is greatly simplified.Such as outstanding lucky Neil paste expensive without filling, cost can be substantially reduced.
The present embodiment for connection external conductor and transformer bushing shell for transformer, certainly it is contemplated that the present invention may be use with All kinds of bushings such as wall bushing, GIS sleeve pipes.Hollow insulator 3 is insulator in the present embodiment, certainly Can be the external insulation of composite, it is exhausted to be also set with silicon rubber composite hollow outside such as condenser type insulation core body 5 , there is the gap 4 for exempting from filling between silicon rubber composite hollow isolators and condenser type insulation core body 5 in edge. Also hollow insulator 3, mounting structure and peace can be installed outside condenser type insulation core body 5 below mounting flange 8 additional The structure for filling the top of flange 8 is identical.When being such as wall bushing, it is cased with the two ends of condenser type insulation core body 5 Two insulators, two insulators by respective upper flange 2 and lower flange 6 respectively with condenser type insulation core body 5 It is fixedly connected, mounting flange is installed additional between the lower flange 6 of two insulators, is insulated in two insulators and condenser type There are two gaps for exempting from filling between core body 5.In addition, the contact tube of condenser type insulation core body 5 can also It is the conducting rod of current-carrying, one end provided with voltage equalizing ball 9 can also be set to binding post;High-voltage connection terminal 1 It may not be needed in some cases (when such as the apparatus body is free of high-pressure conductor).This belongs to the present invention's Protection domain.
Further, anti-moisture mechanism for electric is provided between hollow insulator 3 and condenser type insulation core body 5, due in sky There is gap 4 between core insulation 3 and condenser type insulation core body 5, and normal air can circulate, and should do Fortunately the moistureproof work in gap 4, it is to avoid wet gas caused by insulator and insulation core body surface condensation along face Flashover, to improve the reliability of product.In the inner surface and/or condenser type insulating core of the insulator of the both sides of gap 4 The outer surface of body is provided with insulating barrier by way of spraying hydrophobic material, and such as RTV silicon rubber can be effective Prevent the condensation of aqueous vapor.Can also be installed additional between hollow insulator 3 and condenser type insulation core body 5 it is unidirectional from Right exhaust apparatus, it is excluded wet gas at any time again can be explosion-proof;A kind of preferred natural air-exhaust device can To be to place some 3A molecular sieve desiccants in the junction of hollow insulator 3 and condenser type insulation core body 5, 3A molecular sieves have the characteristic of one-way exhaust, can play dry effect and discharge wet gas.Using The exhaust of 3A molecular sieves can be safeguarded simple, be also not excluded for certainly without other complicated circuits or structure setting Using other exhaust apparatus.
Embodiment two
As shown in Fig. 2 a kind of condenser type insulated cable terminal for exempting from filling of the present invention, including upper flange 12, Hollow insulator 13, condenser type insulation core body 15, ground connection flange 18.Cable termination includes condenser type insulating core Body 15, the overcoat of condenser type insulation core body 15 has hollow insulator 13, exhausted in hollow insulator 13 and condenser type There is the external insulation gap 14 for exempting from filling between edge core body 15.Upper flange 12 and ground connection flange 18 will be hollow exhausted Edge 13 is fixedly connected with condenser type insulation core body 15.In the condenser type insulation core body 15 provided with it is multiple with it is exhausted The capacitance plate 151 that edge layer is arranged alternately, wherein outermost capacitance plate 151 is earthy ground connection end shield, should Ground connection end shield is electrically connected with ground connection flange 18.The cable conduction core 17 of high-tension cable is installed to electricity during installation Insulation protection is carried out in cable terminal.The capacitance type cable terminal of the present invention is exhausted in hollow insulator 13 and condenser type Any oil, glue, gas or solid insulating material need not be filled in the external insulation gap 14 of the formation of edge core body 15, Without vacuumizing, simple in construction, weight is small, cost is low.
Further, capacitance type cable terminal of the invention also includes being arranged on cable conduction core 17 and condenser type is exhausted Stress set 16 between edge core body 15, is provided with high pressure equipotential screen on the inner surface of condenser type insulation core body 15 10 (capacitance plates), cable conduction core 17 is electrically connected with high pressure equipotential screen 10, in high pressure equipotential screen 10 and electricity Presence need not fill the compartments such as the high pressure of other dielectrics 19 between cable conductive core 17.Specifically, stress set 16 are located at capacitance type cable terminal one end, are enclosed on cable conduction core 17, and condenser type insulation core body 15 is with answering The closely crimping of power set 16, cable conduction core 17 passes through conducting rod 11 and upper flange 12 and high pressure equipotential screen 10 Electrical connection, high pressure equipotential screen 10 by upper flange 12 extend to stress cover 16 top surfaces, by high pressure equipotential screen 10, Cable conduction core 17, stress cover 16 top surfaces and upper flange 12 surrounds the compartments such as a high pressure 19, and storehouse internal electric field is strong Degree is zero.Provided with multiple capacitance plates 151 being arranged alternately with insulating barrier, outermost in condenser type insulation core body 15 The ground connection end shield of side is connected with ground connection flange 18.Multiple capacitance plates 151 in condenser type insulation core body 15 Axial dimension successively shortens from inside to outside, and is shunk back vertically from upper flange to ground side in staged.
When the cable termination of the present embodiment makes, by the condenser type insulation core body with upper flange and ground connection flange (for example, being wrapped by epoxy fibreglass), stress set (for example, silicon rubber making) and hollow insulator (example Such as insulator) be assembled together, the high pressure equipotential screen of condenser type insulation core body inner surface (for example, with metal foil or Semi-conductive tape is laid in a insulating layer, or is sprayed on condenser type insulation core body inner surface) and cable conduction core structure Into the compartments such as a high pressure (being substantially an air chamber), between existing between condenser type insulation core body and hollow insulator Gap.To after scene, one section of cable (coordinating with capacitance type cable terminal head length) should be peeled off cable sheath, Remove the semi-conductive layer of cable, and end crimping conducting rod, then this be not filled with to the capacitor type of dielectric Cable termination is sleeved on the cable for peeling crust off, then flange is fixed architecturally.
Due between condenser type insulation core body and hollow insulator without fill insulant, it is simple in construction and Weight saving, it is easy for installation.When assembling at the scene, because each point current potential is different in condenser type insulation core body, And unavoidably having the air gap when condenser type insulation core body and cable assembling, existing product must be filled absolutely Edge medium to improve dielectric strength and reduction partial discharge quantity, it is of the invention then by condenser type insulation core body The compartments such as inner surface setting high pressure, make that each point current potential in cavity is identical, and electric-field intensity is zero, therefore is not required to fill out Fill dielectric.The problem of need not filling dielectric between condenser type insulation core body and conductor is not only solved, And alleviate product weight, reduce manufacturing cost.
In addition the technical scheme of the compartment such as high pressure of the present embodiment can be used for electrical equipment sleeve pipe, it is through walls The high voltage electric equipment such as sleeve pipe and bus.Such as bushing shell for transformer for when wearing cable formula, the compartment such as high pressure is located at electric capacity Between formula insulation core body and contact tube, when for current-carrying formula, the compartment such as high pressure be located at condenser type insulation core body and Between conducting rod, contact tube, conducting rod and cable conduction core are referred to as conductor herein.
Above content is to combine specific preferred embodiment further description made for the present invention, no It can assert that the specific implementation of the present invention is confined to these explanations.For the common of the technical field of the invention For technical staff, without departing from the inventive concept of the premise, some simple deductions can also be made or replaced Change, should all be considered as belonging to protection scope of the present invention.

Claims (10)

1. a kind of condenser type Insulating A High-Voltage electrical equipment for exempting from filling, including condenser type insulation core body, its feature It is:The condenser type insulation core body overcoat has hollow insulator, in hollow insulator and condenser type insulating core There is the gap for exempting from filling between body, the condenser type insulation core body is interior to be arranged alternately provided with multiple with insulating barrier Capacitance plate, wherein outermost capacitance plate be earthy ground connection end shield.
2. the condenser type Insulating A High-Voltage electrical equipment according to claim 1 for exempting from filling, it is characterised in that: The axial dimension of multiple capacitance plates in the condenser type insulation core body successively shortens from inside to outside, and two ends are equal Shunk back to middle part in staged.
3. the condenser type Insulating A High-Voltage electrical equipment according to claim 1 for exempting from filling, it is characterised in that: Described hollow insulator is insulator.
4. the condenser type Insulating A High-Voltage electrical equipment according to claim 1 for exempting from filling, it is characterised in that: Also include upper flange, lower flange and voltage equalizing ball, upper flange and lower flange are fixedly connected with hollow insulator, pacify Dress flange is fixedly connected with condenser type insulation core body and lower flange, and mounting flange is provided with end shield terminal, electricity The ground connection end shield of appearance formula insulation core body is electrically connected with end shield terminal.
5. the condenser type Insulating A High-Voltage electrical equipment according to claim 1 for exempting from filling, it is characterised in that: Anti-moisture mechanism for electric is provided between described hollow insulator and condenser type insulation core body.
6. the condenser type Insulating A High-Voltage electrical equipment according to claim 3 for exempting from filling, it is characterised in that: The inner surface of the insulator and/or the outer surface of condenser type insulation core body are by way of spraying hydrophobic material Provided with insulating barrier.
7. the condenser type Insulating A High-Voltage electrical equipment according to claim 5 for exempting from filling, it is characterised in that: Unidirectional natural air-exhaust device is provided between hollow insulator and the condenser type insulation core body.
8. the condenser type Insulating A High-Voltage electrical equipment according to claim 7 for exempting from filling, it is characterised in that: 3A molecular sieve desiccants are provided with the junction of hollow insulator and condenser type insulating core.
9. the condenser type Insulating A High-Voltage electrical equipment according to claim 1 for exempting from filling, it is characterised in that: High pressure equipotential screen, the conductor in condenser type insulation core body are provided with the inner surface of condenser type insulation core body Electrically connected with high pressure equipotential screen, the high pressure of dielectric need not be filled by being formed between high pressure equipotential screen and conductor Etc. compartment, stress set is provided between conductor and condenser type insulation core body.
10. the condenser type Insulating A High-Voltage electrical equipment according to claim 9 for exempting from filling, its feature exists In:Also include for fixed capacity formula insulation core body, the upper flange of hollow insulator and conductor and ground connection flange, Conductor is electrically connected by the upper flange of one end with high pressure equipotential screen, and stress set, which is set on conductor, is located at ground connection method Blue one end, ground connection flange is connected with stress set grounded part, and high pressure equipotential screen extends to stress set by upper flange Top surface;The axial dimension of multiple capacitance plates in condenser type insulation core body successively shortens from inside to outside, and prolongs axle Shunk back to from upper flange to ground side in staged.
CN201610053321.7A 2016-01-26 2016-01-26 Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling Pending CN106997798A (en)

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CN201610053321.7A CN106997798A (en) 2016-01-26 2016-01-26 Exempt from the condenser type Insulating A High-Voltage electrical equipment of filling

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108847374A (en) * 2018-08-28 2018-11-20 李爱根 A kind of HVAC vacuum circuit breaker
CN109038333A (en) * 2018-08-28 2018-12-18 李爱根 A kind of Rapid Maintenance Method of high voltage substation

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108847374A (en) * 2018-08-28 2018-11-20 李爱根 A kind of HVAC vacuum circuit breaker
CN109038333A (en) * 2018-08-28 2018-12-18 李爱根 A kind of Rapid Maintenance Method of high voltage substation
CN109038333B (en) * 2018-08-28 2019-08-02 上海神洁环保科技股份有限公司 A kind of Rapid Maintenance Method of high voltage substation
CN108847374B (en) * 2018-08-28 2019-09-03 泰州镭昇光电科技有限公司 A kind of HVAC vacuum circuit breaker

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Application publication date: 20170801

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