CN202395399U - Sulfur hexafluoride direct current wall feed-through casing pipe with metal sealing structure - Google Patents
Sulfur hexafluoride direct current wall feed-through casing pipe with metal sealing structure Download PDFInfo
- Publication number
- CN202395399U CN202395399U CN2011205433364U CN201120543336U CN202395399U CN 202395399 U CN202395399 U CN 202395399U CN 2011205433364 U CN2011205433364 U CN 2011205433364U CN 201120543336 U CN201120543336 U CN 201120543336U CN 202395399 U CN202395399 U CN 202395399U
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- CN
- China
- Prior art keywords
- direct current
- insulators
- current wall
- contact tube
- sulfur hexafluoride
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a sulfur hexafluoride direct current wall feed-through casing pipe with a metal sealing structure. The sulfur hexafluoride direct current wall feed-through casing pipe comprises a conducting tube, wherein wiring boards are connected to two ends of the conducting tube; two insulators are sleeved outside two ends of the conducting tube and are connected by a connecting sleeve; and ports of the two insulators, which are close to two ends, are closed by a corrugated sheet, so that the conducting tube and the two insulators form a closed cavity inside. The sulfur hexafluoride direct current wall feed-through casing pipe is characterized in that the closed cavity is filled with sulfur hexafluoride gas; and the two conducting tube and the two insulators are insulated and isolated by the sulfur hexafluoride gas as an insulating medium.
Description
Technical field
The utility model belongs to a kind of electric power equipment, refers in particular to a kind of direct current wall bushing that is used for defeated change system of high direct voltage and nuclear power intense radiation environment.It is applicable to HVDC power transmission and transformation system, and power supply stream passes wall, floor, supports current-carrying part to make it insulation.
Background technology
Its interior insulation of existing HVDC Wall Bushing exchanges paper oil insulation capacitor core in the sleeve pipe for being similar to, and main insulating material is transformer oil and cable paper.Insulation is under direct voltage in this; As pole plate, oil-paper is equivalent to the resistor of a series connection as the coaxial cylindrical series connection insulator of medium between pole plate by aluminium foil; Through controlling the wherein numerical value of each resistance, the radial and axial DC electric field of this insulator is evenly distributed.Its shortcoming is complex manufacturing, production cycle length, insulating material is easy wears out, and be no more than 30 years general normal useful life.
Above-mentioned HVDC Wall Bushing, encapsulant uses rubber, and along with the increase of service time, sealing ring might chap, and follows the string, and produces seepage oil, influences system safety operation.
In sum, the high-voltage wall bushing of existing structure form exists production cost high, the assembling difficulty, the production cycle is long, be prone to aging, shortcoming such as useful life is short, and is difficult in maintenance, so necessary this is improved.
The utility model content
The purpose of the utility model is; To existing direct current wall bushing, can solve existing oilpaper wall bushing complex manufacturing, cost is high; And can solve the deficiency that existing wall bushing insulating material, encapsulant are prone to problem such as aging, propose a kind of Novel DC wall bushing.
The purpose of the utility model realizes through following technical proposals: a kind of sulphur hexafluoride direct current wall bushing of shape metallic leak-proof structure; Said direct current wall bushing comprises a contact tube; Contact tube two is connected with terminal block, and the outside at contact tube two is with two insulators, and two insulators couple together through a coupling sleeve; Lean on the port at two to be closed at two insulators, make contact tube and two insulators be formed with enclosed cavity at inner face by corrugated plate; It is characterized in that: in enclosed cavity, be filled with sulfur hexafluoride gas, with sulfur hexafluoride gas as dielectric to the isolation of insulating between contact tube and two insulators.
As the utility model embodiment preferred, the inner face of described coupling sleeve is provided with shielding cylinder, is provided with grading ring in the shielding cylinder, and grading ring is formed by connecting four sections smooth cambered surfaces; And insulator, contact tube, coupling sleeve, shielding cylinder are coaxial.
As the utility model embodiment preferred, the sealing surface that described insulator is connected with coupling sleeve is provided with metal o-ring.
As the utility model embodiment preferred, adopt the spacing hermetically-sealed construction of stainless steel substrates between described insulator and contact tube, splice sleeve, the corrugated plate.
As the utility model embodiment preferred, sealed relay and Air filling and discharging valves are installed on the tube wall of coupling sleeve; On corrugated plate, be provided with explosion-proof apparatus.
The utility model adopts sulfur hexafluoride gas as dielectric, utilizes the sulfur hexafluoride gas-insulating performance good, and the characteristics of stable performance have overcome paper oil insulation and have been prone to wear out the shortcoming of complex manufacturing.And used encapsulant is the metallic seal material, effectively restrains rubber packing material and is prone to agingly, and sealing ring is prone to be full of cracks, follows the string and produces seepage, has solved effectively because of sealing former thereby influencing the problem of power transmission and transformation system safety; Used shielding cylinder grading ring is formed by connecting four sections smooth cambered surfaces, has optimized field intensity greatly, has improved insulation property; Adopt the spacing hermetically-sealed construction of stainless steel substrates between insulator and conduit, splice sleeve, the pressing plate, improved the bending resistance of product effectively.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
To combine accompanying drawing and embodiment that the utility model is done further description below.
Embodiment one
Can find out through accompanying drawing; The utility model relates to a kind of sulphur hexafluoride direct current wall bushing of shape metallic leak-proof structure, and said direct current wall bushing comprises a contact tube 2, and contact tube 2 two are connected with terminal block 6; The outside at contact tube 2 two is with two insulators 1; Two insulators 1 couple together through a coupling sleeve 3, lean on the port at two to be closed by corrugated plate 7 at two insulators 1, make contact tube 2 and two insulators 1 be formed with enclosed cavity 8 at inner face; It is characterized in that: in enclosed cavity 8, be filled with sulfur hexafluoride gas, with sulfur hexafluoride gas as dielectric to the isolation of insulating between contact tube 2 and two insulators 1.
As the utility model embodiment preferred, the inner face of described coupling sleeve 3 is provided with shielding cylinder 9, is provided with grading ring in the shielding cylinder 9, and grading ring is formed by connecting four sections smooth cambered surfaces; And insulator 1, contact tube 2, coupling sleeve 3, shielding cylinder 9 four are coaxial.
As the utility model embodiment preferred, the sealing surface that described insulator 1 is connected with coupling sleeve 3 is provided with metal o-ring 10.
As the utility model embodiment preferred, adopt the spacing hermetically-sealed construction of stainless steel substrates between described insulator 1 and contact tube 2, splice sleeve 3, the corrugated plate 7.
As the utility model embodiment preferred, sealed relay 4 and Air filling and discharging valves 5 are installed on the tube wall of coupling sleeve 3; On corrugated plate 7, be provided with explosion-proof apparatus 12.
The utility model adopts sulfur hexafluoride gas as dielectric, utilizes the sulfur hexafluoride gas-insulating performance good, and the characteristics of stable performance have overcome paper oil insulation and have been prone to wear out the shortcoming of complex manufacturing.And used encapsulant is the metallic seal material, effectively restrains rubber packing material and is prone to agingly, and sealing ring is prone to be full of cracks, follows the string and produces seepage, has solved effectively because of sealing former thereby influencing the problem of power transmission and transformation system safety; Used shielding cylinder grading ring is formed by connecting four sections smooth cambered surfaces, has optimized field intensity greatly, has improved insulation property; Adopt the spacing hermetically-sealed construction of stainless steel substrates between insulator and conduit, splice sleeve, the pressing plate, improved the bending resistance of product effectively.
Claims (5)
1. the sulphur hexafluoride direct current wall bushing of a shape metallic leak-proof structure; Said direct current wall bushing comprises a contact tube; Contact tube two is connected with terminal block, and the outside at contact tube two is with two insulators, and two insulators couple together through a coupling sleeve; Lean on the port at two to be closed at two insulators, make contact tube and two insulators be formed with enclosed cavity at inner face by corrugated plate; It is characterized in that: in enclosed cavity, be filled with sulfur hexafluoride gas, with sulfur hexafluoride gas as dielectric to the isolation of insulating between contact tube and two insulators.
2. the sulphur hexafluoride direct current wall bushing of shape metallic leak-proof structure as claimed in claim 1, it is characterized in that: the inner face of described coupling sleeve is provided with shielding cylinder, is provided with grading ring in the shielding cylinder, and grading ring is formed by connecting four sections smooth cambered surfaces; And insulator, contact tube, coupling sleeve, shielding cylinder are coaxial.
3. the sulphur hexafluoride direct current wall bushing of shape metallic leak-proof structure as claimed in claim 2, it is characterized in that: the sealing surface that described insulator is connected with coupling sleeve is provided with metal o-ring.
4. the sulphur hexafluoride direct current wall bushing of shape metallic leak-proof structure as claimed in claim 3 is characterized in that: adopt the spacing hermetically-sealed construction of stainless steel substrates between described insulator and contact tube, splice sleeve, the corrugated plate.
5. the sulphur hexafluoride direct current wall bushing of shape metallic leak-proof structure as claimed in claim 4 is characterized in that: sealed relay and Air filling and discharging valves are installed on the tube wall of coupling sleeve; On corrugated plate, be provided with explosion-proof apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205433364U CN202395399U (en) | 2011-12-22 | 2011-12-22 | Sulfur hexafluoride direct current wall feed-through casing pipe with metal sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205433364U CN202395399U (en) | 2011-12-22 | 2011-12-22 | Sulfur hexafluoride direct current wall feed-through casing pipe with metal sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395399U true CN202395399U (en) | 2012-08-22 |
Family
ID=46670301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205433364U Expired - Lifetime CN202395399U (en) | 2011-12-22 | 2011-12-22 | Sulfur hexafluoride direct current wall feed-through casing pipe with metal sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202395399U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500967A (en) * | 2013-10-22 | 2014-01-08 | 国家电网公司 | Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing |
| CN105977887A (en) * | 2016-06-01 | 2016-09-28 | 中国西电电气股份有限公司 | Inflatable extra-high voltage direct current through-the-wall bushing |
-
2011
- 2011-12-22 CN CN2011205433364U patent/CN202395399U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500967A (en) * | 2013-10-22 | 2014-01-08 | 国家电网公司 | Resin impregnated paper capacitance type extra-high-voltage alternating current-direct current wall bushing |
| CN105977887A (en) * | 2016-06-01 | 2016-09-28 | 中国西电电气股份有限公司 | Inflatable extra-high voltage direct current through-the-wall bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120822 |
|
| CX01 | Expiry of patent term |