CN102315607A - Gas-filled bushing for high-voltage switch equipment with high current carrying capacity - Google Patents
Gas-filled bushing for high-voltage switch equipment with high current carrying capacity Download PDFInfo
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- CN102315607A CN102315607A CN201110274553A CN201110274553A CN102315607A CN 102315607 A CN102315607 A CN 102315607A CN 201110274553 A CN201110274553 A CN 201110274553A CN 201110274553 A CN201110274553 A CN 201110274553A CN 102315607 A CN102315607 A CN 102315607A
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Abstract
The invention discloses a gas-filled bushing for high-voltage switch equipment with high current carrying capacity. The gas-filled bushing is characterized in that a current-carrying conductor, a contact connecting device, an internal shielding structure and other parts are sealed in a container filled with gas having a certain pressure by using a hollow insulator and a heat radiator; the current-carrying conductor, the contact connecting device and a wiring terminal are used for realizing the lead-in and out of current; the internal shielding structure and an upper grading ring are used for improving the distribution of an internal electric field and an external electric field; an inner cavity of the bushing is filled with insulating and heat-radiating gases with a certain pressure, such as SF6 gas; a gas channel in the inner cavity is smooth; the gases in the inner cavity participate in heat exchange by conduction, convection, radiation and other modes; and the heat radiator is arranged at the top of a high-pressure bushing. The inner surface of the heat radiator keeps tight contact with heat convection gas and the outer surface of the heat radiator keeps tight contact with outside cold air, thus inside heat is effectively and quickly dissipated to the outside air and the heat-radiating power and efficiency of the bushing are improved. Compared with products with a conventional structure, the bushing designed by the invention has higher current carrying capacity.
Description
Technical field
The present invention relates to high pressure, superhigh pressure and ultra high voltage sleeve technology field, particularly a kind of high current carrying capacity high voltage switchgear is used gas-filled bushing.
Background technology
Sleeve pipe is the significant components of potting breaker and Cubicle Gas-Insulated Switchgear (GIS); Its effect is that high voltage, high-current leading are gone into or drawn relevant device; Need possess certain insulation tolerance and current capacity, along with the continuous increase of electric power system power load, electric power system is also increasingly high to the requirement of the specified running current of sleeve pipe; High voltage switchgear has two kinds of condenser-type terminal and gas-filled bushings usually with the project organization of sleeve pipe; Rated current generally below 4000A, for improving the specified current capacity of high voltage switchgear with sleeve pipe, avoids higher temperature that insulated support and seal are caused unnecessary aging and damage; Often need increase the diameter of sleeve pipe current, the negative effect that brings thus has:
(1) thick excessively current can produce bad influence to the insulation property of bushing,
(2) thick excessively current can increase the overall weight of bushing, adds to the difficulties for links such as transportation and installation,
(3) increase the bushing inside diameter, material cost increases, and is less economical.
Summary of the invention
The purpose of this invention is to provide a kind of high current carrying capacity high voltage switchgear and use gas-filled bushing, rated current can be used as the GIS of 126kV to 1200kV electric pressure or the high current carrying capacity gas-filled bushing of potting breaker up to 10000A.
The present invention realizes like this
,High voltage switchgear is used gas-filled bushing; It comprises bushing, hollow insulator, current, contact jockey, inner shield structure, goes up grading ring, binding post, heat abstractor, helical spring, it is characterized in that hollow insulator and heat abstractor are sealed in parts such as current, contact jockey and inner shield structure in the volume that is filled with certain pressure gas; Current, contact jockey and binding post are in order to the introduction that realizes electric current and draw; Inner shield structure and last grading ring distribute in order to the inner electric field and outer electric field that improves sleeve pipe, are provided with the heat abstractor that is used to increase external heat radiation power of sleeve pipe and efficient at the top of bushing.
The high current carrying capacity high voltage switchgear is filled with insulation and the heat radiation gas such as the SF of certain pressure with the inner chamber of gas-filled bushing
6Gas, the inner chamber gas passage is unimpeded, and inner chamber gas is participated in heat exchange through modes such as conduction, convection current, radiation, and during work, the cold air density in the inner chamber gas passage flows downward cold air greater than hot gas; Gas flows downward and receives the heating of heater element in the process, progressively becomes hot gas and upwards flows, and the flowing of different directions in passage of the gas through carrying heat produces effective thermal convection in sleeve pipe, and heat abstractor is arranged on the top of bushing.The heat abstractor inner surface keeps closely contacting with thermal convection gas; Outer surface keeps closely contacting with cool ambient air; Thereby the inside and outside effectively heat exchange of formation sleeve pipe is dispersed into internal heat in the outside air effectively apace, has improved the heat radiation power and the efficient of sleeve pipe.Compare with the product of conventional structure, the sleeve pipe of the present invention's design has higher current capacity.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further description;
Fig. 1 is the structural representation of high current carrying capacity high voltage switchgear of the present invention with gas-filled bushing,
Fig. 2 is the structural representation of helical spring contact jockey,
Fig. 3 is the last grading ring structural representation of circular ring structure,
Fig. 4 is the last grading ring structural representation of Gyro Shell shape shielding case structure,
Fig. 5 is the structural representation of heat abstractor,
Fig. 6 is the end view of construction for heat radiating device sketch map 5,
Fig. 7 is that the equivalent cloud atlas of the current potential of shielding construction place analysis of electric field distributes,
Fig. 8 be go up grading ring place analysis of electric field the equivalent cloud atlas of current potential distribute.
Embodiment
Shown in Fig. 1-8; This high current carrying capacity high voltage switchgear comprises hollow insulator 2, current 3, contact jockey 4, inner shield structure 5, goes up grading ring 6, binding post 7, heat abstractor 8 and helical spring 9 with gas-filled bushing, and hollow insulator 2 is sealed in one with heat abstractor 8 with current 3, contact jockey 4 and inner shield structure 5 and is filled with SF
6In the volume of insulating gas; Current 3, contact jockey 4 and binding post 7 are in order to the introduction that realizes electric current and draw; Inner shield structure 5 distributes in order to the inner electric field and outer electric field that improves bushing 1 with last grading ring 6; Heat abstractor 8 is used to improve the heat radiation power and the efficient of sleeve pipe; This sleeve pipe rated current can be used as the GIS of 126kV to 1200kV electric pressure or the high current carrying capacity gas-filled bushing of potting breaker up to 10000A; Hollow insulator 2 can be porcelain insulator or composite insulator; Its current 3 adopts lower copper material or the aluminium of resistivity, need possess certain sectional area, can be copper pipe (rod) or aluminum pipe (rod); Its contact jockey 4 adopts the helical spring contact; Inner shield structure 5 can be set to individual layer, bilayer, three layers or multilayer according to electric pressure; For guaranteeing insulation property, inner shield structure 5 ends need be designed to the multi-section circular arc rounding off; Last grading ring 6 can be circular ring structure or Gyro Shell shape shielding case structure; Heat abstractor 8 is processed by metal especially aluminium alloy, keeps being electrically connected with conducting element.Heat abstractor 8 adopts specific shape, has certain electric field shielding effect, makes heat abstractor 8 have good heat radiation and electrical insulation properties simultaneously; Cannula cavity is filled with the insulation and the heat radiation gas of certain pressure; Inner chamber gas is participated in heat exchange through modes such as conduction, convection current, radiation; The inner chamber gas passage is unimpeded, utilizes circulating of gas can heat be delivered to heat abstractor 8 by heat generating spot; A plurality of fin that distribute on heat abstractor 8 shells, radially or pectination distribute, heat abstractor 8 outer surfaces and outside air keep in touch; Inner surface and internal gas keep in touch; Can carry out heat exchange effectively; The inside pipe casing heat is dispersed in the outside air, improves high voltage switchgear with the whole current capacity of gas-filled bushing, the metal material of current 3 employing high conductivity, high thermal conductivity is pipe or the rod processed of aluminium alloy or oxygen-free copper especially; Need possess certain sectional area, diameter is usually in 50mm～300mm scope.Shown in Figure 2 is the contact jockey 4 of bushing, adopts to be convenient to Installation and Debugging and through-current capability helical spring contact preferably, can select the number of helical spring 9 according to the rated current size.Insulation property are high voltage switchgear key propertys with gas-filled bushing.For guaranteeing the insulation property of high voltage switchgear with gas-filled bushing; Inside pipe casing is provided with the shielding construction 5 that improves Electric Field Distribution; Shielding construction 5 can be set to individual layer, bilayer, three layers or multilayer according to electric pressure, and a plurality of circular arc rounding ofves should be adopted in the end of shielding construction.The planform of shielding construction 5 should be confirmed through electric Field Calculation optimization.Shown in Figure 7 is the equivalent cloud atlas distribution of current potential of a kind of inner shield structure place analysis of electric field; For guaranteeing the insulation property of high voltage switchgear with gas-filled bushing; Jacket exterior is provided with grading ring 6; Last grading ring 6 can be designed as circular ring structure or Gyro Shell shape shielding case structure, sees Fig. 3 and shown in Figure 4.The planform of last grading ring 6 should be confirmed through electric Field Calculation optimization.Shown in Figure 8 is that a kind of equivalent cloud atlas of current potential of going up grading ring structure place analysis of electric field distributes, and for the circular ring structure of one of last grading ring 6 versions, for reducing weight, adopts the thin-wall circular tube material to process, and thickness is chosen in 1mm～6mm scope usually; Be to guarantee insulation property, the pipe diameter is chosen in 100mm～400mm scope according to electric pressure usually, Fig. 5 and shown in Figure 6 be a kind of structural representation of heat abstractor 8.Heat abstractor 8 is processed by the lighter metal of the better weight of thermal conductivity especially aluminium alloy, keeps being electrically connected with conducting element.Heat abstractor 8 adopts specific shape, requires to have certain electric screening action.Be to increase the area of dissipation of heat abstractor 8, the outer surface of heat abstractor 8 is provided with a plurality of fin, radially or pectination distribute, high current carrying capacity high voltage switchgear of the present invention use gas-filled bushing, cannula cavity is filled with the insulation of certain pressure and dispel the heat gas such as SF
6Gas, the inner chamber gas passage is unimpeded, and inner chamber gas is participated in heat exchange through modes such as conduction, convection current, radiation, and during work, the cold air density in the inner chamber gas passage flows downward cold air greater than hot gas; Gas flows downward and receives the heating of heater element in the process, progressively becomes hot gas and upwards flows, and the flowing of different directions in passage of the gas through carrying heat produces effective thermal convection in sleeve pipe, and heat abstractor 8 is arranged on the top of bushing; Heat abstractor 8 inner surfaces keep closely contacting with thermal convection gas; Outer surface keeps closely contacting with cool ambient air; Thereby the inside and outside effectively heat exchange of formation sleeve pipe is dispersed into internal heat in the outside air effectively apace, has improved the heat radiation power and the efficient of sleeve pipe.Compare with the product of conventional structure, the sleeve pipe of the present invention's design has higher current capacity.
Claims (9)
1. a high current carrying capacity high voltage switchgear is used gas-filled bushing; It comprises bushing, hollow insulator, current, contact jockey, inner shield structure, goes up grading ring, binding post, heat abstractor, helical spring, it is characterized in that hollow insulator and heat abstractor are sealed in parts such as current, contact jockey and inner shield structure in the volume that is filled with certain pressure gas; Current, contact jockey and binding post are in order to the introduction that realizes electric current and draw; Inner shield structure and last grading ring distribute in order to the inner electric field and outer electric field that improves sleeve pipe, are provided with the heat abstractor that is used to increase external heat radiation power of sleeve pipe and efficient at the top of bushing.
2. high current carrying capacity high voltage switchgear according to claim 1 is used gas-filled bushing, it is characterized in that hollow insulator can be porcelain insulator or composite insulator.
3. high current carrying capacity high voltage switchgear according to claim 1 is used gas-filled bushing, it is characterized in that current adopts lower copper material or the aluminium of resistivity, can be copper pipe (rod) or aluminum pipe (rod).
4. high current carrying capacity high voltage switchgear according to claim 1 is used gas-filled bushing, it is characterized in that the contact jockey adopts the helical spring contact.
5. high current carrying capacity high voltage switchgear according to claim 1 is used gas-filled bushing, it is characterized in that the inner shield structure is individual layer, bilayer, three layers or multilayer, and inner shield structure end is designed to the multi-section circular arc rounding off.
6. high current carrying capacity high voltage switchgear according to claim 1 is used gas-filled bushing, it is characterized in that grading ring is circular ring structure or Gyro Shell shape shielding case structure.
7. high current carrying capacity high voltage switchgear according to claim 1 is used gas-filled bushing, it is characterized in that having good thermal diffusivity, the heat abstractor of electrical insulation properties and electric field shielding effect is by metal, and particularly aluminium alloy is processed.
8. the high voltage switchgear of high current carrying capacity according to claim 1 is used gas-filled bushing; Its cannula cavity is filled with the insulation and the heat radiation gas of certain pressure; Inner chamber gas is participated in heat exchange through modes such as conduction, convection current, radiation, and inner chamber utilizes circulating of gas can heat be delivered to heat abstractor by heat generating spot.
9. the high voltage switchgear of high current carrying capacity according to claim 1 is used gas-filled bushing; It is characterized in that a plurality of fin that distribute on the shell of heat abstractor; Radially or pectination distribute, radiator outer surface and outside air keep in touch, inner surface and internal gas keep in touch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110274553A CN102315607A (en) | 2011-09-16 | 2011-09-16 | Gas-filled bushing for high-voltage switch equipment with high current carrying capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110274553A CN102315607A (en) | 2011-09-16 | 2011-09-16 | Gas-filled bushing for high-voltage switch equipment with high current carrying capacity |
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| CN102315607A true CN102315607A (en) | 2012-01-11 |
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| CN201110274553A Pending CN102315607A (en) | 2011-09-16 | 2011-09-16 | Gas-filled bushing for high-voltage switch equipment with high current carrying capacity |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474896A (en) * | 2013-09-26 | 2013-12-25 | 河南平高东芝高压开关有限公司 | Large-current ultra-high-voltage sleeve |
| CN106486220A (en) * | 2015-09-02 | 2017-03-08 | 泰科电子(昆山)有限公司 | Insulated sleeve |
| CN107424800A (en) * | 2017-09-12 | 2017-12-01 | 中国电力科学研究院 | Heat dissipation type grading ring |
| WO2018032717A1 (en) * | 2016-08-15 | 2018-02-22 | 江苏智达高压电气有限公司 | Ultra-high voltage electroceramics external-insulation lead-out bushing |
| CN113591264A (en) * | 2021-04-27 | 2021-11-02 | 平高集团有限公司 | Temperature calculation method and device for high-voltage switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10246819A (en) * | 1997-03-05 | 1998-09-14 | Nec Eng Ltd | Heat radiating and shock absorbing structure for underwater repeater |
| CN201498284U (en) * | 2009-09-03 | 2010-06-02 | 山东彼岸电力科技有限公司 | Ultra-high pressure GIS wire inlet and outlet composite insulating sleeve |
| CN101807459A (en) * | 2010-03-10 | 2010-08-18 | 中国电力科学研究院 | Ultrahigh-pressure gas insulated porcelain sleeve pipe |
| CN102176346A (en) * | 2011-03-21 | 2011-09-07 | 江苏江城电气有限公司 | Sectionalized high-voltage enclosed bus of energy saving and environmental protection type |
-
2011
- 2011-09-16 CN CN201110274553A patent/CN102315607A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10246819A (en) * | 1997-03-05 | 1998-09-14 | Nec Eng Ltd | Heat radiating and shock absorbing structure for underwater repeater |
| CN201498284U (en) * | 2009-09-03 | 2010-06-02 | 山东彼岸电力科技有限公司 | Ultra-high pressure GIS wire inlet and outlet composite insulating sleeve |
| CN101807459A (en) * | 2010-03-10 | 2010-08-18 | 中国电力科学研究院 | Ultrahigh-pressure gas insulated porcelain sleeve pipe |
| CN102176346A (en) * | 2011-03-21 | 2011-09-07 | 江苏江城电气有限公司 | Sectionalized high-voltage enclosed bus of energy saving and environmental protection type |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474896A (en) * | 2013-09-26 | 2013-12-25 | 河南平高东芝高压开关有限公司 | Large-current ultra-high-voltage sleeve |
| CN106486220A (en) * | 2015-09-02 | 2017-03-08 | 泰科电子(昆山)有限公司 | Insulated sleeve |
| CN106486220B (en) * | 2015-09-02 | 2018-03-23 | 泰科电子(昆山)有限公司 | insulating sleeve |
| WO2018032717A1 (en) * | 2016-08-15 | 2018-02-22 | 江苏智达高压电气有限公司 | Ultra-high voltage electroceramics external-insulation lead-out bushing |
| CN107424800A (en) * | 2017-09-12 | 2017-12-01 | 中国电力科学研究院 | Heat dissipation type grading ring |
| CN107424800B (en) * | 2017-09-12 | 2020-08-07 | 中国电力科学研究院 | Heat dissipation type grading ring |
| CN113591264A (en) * | 2021-04-27 | 2021-11-02 | 平高集团有限公司 | Temperature calculation method and device for high-voltage switch |
| CN113591264B (en) * | 2021-04-27 | 2024-03-26 | 平高集团有限公司 | Temperature calculation method and device for high-voltage switch |
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Application publication date: 20120111 |