CN2676362Y - High voltage insulating and adiabatic liquid nitrogen connecting tube - Google Patents
High voltage insulating and adiabatic liquid nitrogen connecting tube Download PDFInfo
- Publication number
- CN2676362Y CN2676362Y CN 200320103954 CN200320103954U CN2676362Y CN 2676362 Y CN2676362 Y CN 2676362Y CN 200320103954 CN200320103954 CN 200320103954 CN 200320103954 U CN200320103954 U CN 200320103954U CN 2676362 Y CN2676362 Y CN 2676362Y
- Authority
- CN
- China
- Prior art keywords
- outer tube
- liquid nitrogen
- main body
- tube connector
- ring
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
Abstract
The utility model relates to a high voltage insulating and adiabatic liquid nitrogen connecting tube, comprising a main body composed of an outer tube and an inner tube sheathed in the outer tube. The left and right end parts of the outer tube and the inner tube are connected via sealing to form a sealing space interlayer between the outer tube and the inner tube. The sealing space interlayer is filled with insulating and adiabatic materials, and two ends of the inner tube are permeable. A thermal shrinkage high-voltage busbar insulating casing pipes are tightly sheathed out of the outer tube of the main body. A plurality of thermal shrinkage umbrella skirts are uniformly arranged and sheathed out of the thermal shrinkage high-voltage busbar insulating casing pipes. Two high potential equalizing rings are sheathed out of the thermal shrinkage high-voltage busbar insulating casing pipes and respectively arranged at two sides of the plurality of thermal shrinkage umbrella skirts for shielding the edges of all protruded parts. The utility model is not only suitable for high-temperature superconductive cable terminals, but also can be used for high-temperature superconductive electric power with high voltage, such as fault current limiters, superconductive transformers, etc.
Description
Technical field
The utility model relates to the adiabatic liquid nitrogen tube connector of High-Voltage Insulation in a kind of high-temperature superconductive cable, and it is not only applicable to the high-temperature superconductive cable technology, is applicable to the high-tension electricity engineering yet.
Background technology
High temperature superconducting materia will step into large-scale application and industrialization in nearly 10-20.Advantages such as compare with normal cable, it is big that hyperconductive cable has transmission capacity, and energy loss is little.Only need the high-temperature superconductive cable of cooled with liquid nitrogen to be considered to high temperature superconductor technology and be applied to power industry and move towards the good project of industrialization, because the technical difficulty of liquid nitrogen cooling and operating cost are all lower.
Liquid nitrogen is by the input and output of terminal thermostat in the hyperconductive cable of closed-cycle refrigeration.The current feed that connects hyperconductive cable and high voltage bus in the terminal thermostat is in high potential, the warm insulated type hyperconductive cable of main insulation outside constant warm tube especially, and its cable body constant warm tube and terminal thermostat all are in high potential.And the refrigeration plant of hyperconductive cable and low temperature transfer line all must be ground connection, only in this way are only safe for operating personnel and equipment.Owing to exist tens ofly to up to a hundred kilovolts of potential differences, the liquid nitrogen of stube cable terminal and low temperature transmission line is taken over must have high electric simulation strength and heat-insulating property preferably.At present usual way is the phenolic aldehyde epoxy tube that adopts glass fibre to strengthen, and can be operated in liquid nitrogen and liquid helium warm area, can the substituted metal pipe, and replace vacuum superadiabatic material with powder isolation materials such as aeroges.The electric simulation strength of powder isolation layer is relevant with air pressure with thermal transmission coefficient, and hyperbar can improve electric simulation strength, but has reduced heat-insulating property.The terminal thermostat of the 12.4kV/1.25kA hyperconductive cable of U.S. Southwire company adopts the epoxy tube insulation, and fills the nitrogen that is lower than 10bar at the powder isolation layer, and the heat load of terminal is up to 230W as a result.The insulation liquid nitrogen tube connector of the 36kV/2kA hyperconductive cable of Denmark NKT company fills normal pressure nitrogen, the terminal heat load is 150W/ to the maximum, the heat load sum of current feed and thermostat low temperature interface should be no more than 100W, and the about 50W of the heat load of the liquid nitrogen pipe that as seen insulate accounts for 1/3 of sum.Be reducing the refrigeration expense of operation, and guarantee to reduce the air pressure of aerogel layer under the prerequisite that electrical insulation capability meets the demands, reduce heat load, is an important topic in present technique field.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art and defective, proposes the adiabatic liquid nitrogen tube connector of a kind of High-Voltage Insulation, and by adopting epoxy tube that glass the strengthens inner and outer pipes as heat insulation layer, interlayer fills with electric insulation and all good SiO of heat-insulating property
2Aeroge is as the insulation and thermal insulation material.Guaranteeing under the prerequisite that electrical insulation capability meets the demands that the air pressure of aerogel layer reduces thermal transmission coefficient when suitably reducing operation, the heat load of the liquid nitrogen tube connector that reduces to insulate makes this terminal heat load sum be lower than 120W/ restriction.The utility model not only is applicable to hts power cable termination, and also portable is used for other high-temperature superconductor electric power application of high voltage grade, as fault demand limiter, superconducting transformer or the like.
For reaching above-mentioned purpose, the utility model provides a kind of High-Voltage Insulation adiabatic liquid nitrogen tube connector, comprising:
One main body comprises outer tube and is set in the interior interior pipe of outer tube that outer tube is connected with two end seals about interior pipe, to form the seal cavity interlayer between outer tube and the interior pipe, is filled with the insulation and thermal insulation material in described seal cavity interlayer, and interior pipe two ends are penetrating;
One pyrocondensation high pressure busbar insulating sleeve closely is set in outside the outer tube of described main body;
A plurality of pyrocondensation full skirts, evenly distributed being set in outside the described pyrocondensation high pressure busbar insulating sleeve;
Two high potential grading rings are set in outside the described pyrocondensation high pressure busbar insulating sleeve, and place the both sides of described a plurality of pyrocondensation full skirts respectively, are used to shield the edge of each outstanding part.
Described outer tube and interior pipe are strengthened the epoxy pipe by glass fibre and are made.
The described insulation and thermal insulation material that charges into the seal cavity interlayer is SiO
2Aeroge.
Also have one to take out/inflate and chew on the wall of the outer tube of described main body, be connected as a single entity with outer tube wall, and communicate with the seal cavity interlayer, it further comprises:
Bleed and chew body, be the pipe shape, the wall of its underpart and outer tube is tightly connected, and its top is a ring flange, be used for take out/aerating device is connected, and a protruding ring is arranged on the wall within it;
Sealing plug for cylindric, places described bleeding to chew on the protruding ring of body inwall, and there is the externally threaded screw terminal of tool its underpart, and female hole of planting for the knob instrument is arranged at its top, and two concave ring grooves are arranged on the face of cylinder of sealing plug;
Two O-ring seals place respectively in described two concave ring grooves;
The filter course back-up ring places described bleeding to chew under the protruding ring of body inwall, and there is penetrating screw at its center, with the screw terminal threaded engagement on the described sealing plug;
The aeroge filter course, place described filter course back-up ring below.
Described aeroge filter course is a chemical ﹠ blended fabric, and its thickness is 4～10 millimeters.
The number of described a plurality of pyrocondensation full skirts is 4～10.
The left part of described main body is connected with the hts power cable termination thermostat, can directly insert the right-hand member of hts power cable termination thermostat.
The right part of described main body is a metal tube, and its sealing joint with the liquid nitrogen transfer line is connected.
Advantage of the present utility model is that it passes through to adopt the inner and outer pipes of the epoxy tube of glass reinforcement as heat insulation layer, and interlayer fills with electric insulation and all good SiO of heat-insulating property
2Aeroge is as the insulation and thermal insulation material.Guaranteeing under the prerequisite that electrical insulation capability meets the demands that the air pressure of aerogel layer reduces thermal transmission coefficient when suitably reducing operation, the heat load of the liquid nitrogen tube connector that reduces to insulate makes this terminal heat load sum be lower than 120W/ restriction.The utility model not only is applicable to hts power cable termination, and also portable is used for other high-temperature superconductor electric power application of high voltage grade, as fault demand limiter, superconducting transformer or the like.
Description of drawings
Fig. 1 is the axial section structural representation of the adiabatic liquid nitrogen tube connector of High-Voltage Insulation;
Fig. 2 takes out/inflates the axial semi-section structural representation of chewing;
When Fig. 3 is applied to hts power cable termination for the adiabatic liquid nitrogen tube connector of High-Voltage Insulation, the schematic diagram that is connected with hyperconductive cable terminal thermostat.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model provides a kind of High-Voltage Insulation adiabatic liquid nitrogen tube connector, comprising:
One main body 1, comprise outer tube 11 and the interior pipe 12 that is set in the outer tube 11, outer tube 11 is connected with two end seals about interior pipe 12, to form the seal cavity interlayer 13 between outer tube 11 and the interior pipe 12, be filled with the insulation and thermal insulation material in described seal cavity interlayer 13, interior pipe 12 two ends are penetrating;
One pyrocondensation high pressure busbar insulating sleeve 2 closely is set in outside the outer tube 11 of described main body 1;
A plurality of pyrocondensation full skirts 3, evenly distributed being set in outside the described pyrocondensation high pressure busbar insulating sleeve 2;
Two high potential grading rings 4 are set in outside the described pyrocondensation high pressure busbar insulating sleeve 2, and place the both sides of described a plurality of pyrocondensation full skirts 3 respectively, are used to shield the edge of each outstanding part.
Described outer tube 11 and interior pipe 12 are strengthened the epoxy pipe by glass fibre and are made.
The described insulation and thermal insulation material that charges into seal cavity interlayer 13 is SiO
2Aeroge.
As depicted in figs. 1 and 2, also have one to take out/inflate and chew 14 on the wall of the outer tube 11 of described main body 1, be connected as a single entity with the wall of outer tube 11, and communicate with seal cavity interlayer 13, it further comprises:
Bleed and chew body 141, be the pipe shape, the wall of its underpart and outer tube 11 is tightly connected, and its top is a ring flange 1411, be used for take out/aerating device is connected, and a protruding ring 1412 is arranged on the wall within it;
Two O-ring seals 143 place respectively in described two concave ring grooves 1423;
Filter course back-up ring 144 places under the described protruding ring 1412 of chewing the body inwall of bleeding, and there is penetrating screw at its center, with screw terminal 1421 threaded engagement on the described sealing plug;
The number of described a plurality of pyrocondensation full skirts 3 is 4～10, and general the best is 6, as shown in Figure 1, and according to thick or thin different also can select respectively many or few number of main body 1.
As shown in figures 1 and 3, the left part of described main body 1 is connected with hts power cable termination thermostat 5, can directly insert the right-hand member of hts power cable termination thermostat 5.
The right part of described main body is a metal tube 15, and the interface 16 of itself and liquid nitrogen transfer line is tightly connected.
The above embodiment only is applied to the situation of hts power cable termination for the adiabatic liquid nitrogen tube connector of High-Voltage Insulation, the utility model not only is applicable to hts power cable termination, also portable is used for other high-temperature superconductor electric power application of high voltage grade, as fault demand limiter, superconducting transformer or the like.
Claims (8)
1. the adiabatic liquid nitrogen tube connector of High-Voltage Insulation is characterized in that, comprising:
One main body comprises outer tube and is set in the interior interior pipe of outer tube that outer tube is connected with two end seals about interior pipe, to form the seal cavity interlayer between outer tube and the interior pipe, is filled with the insulation and thermal insulation material in described seal cavity interlayer, and interior pipe two ends are penetrating;
One pyrocondensation high pressure busbar insulating sleeve closely is set in outside the outer tube of described main body;
A plurality of pyrocondensation full skirts, evenly distributed being set in outside the described pyrocondensation high pressure busbar insulating sleeve;
Two high potential grading rings are set in outside the described pyrocondensation high pressure busbar insulating sleeve, and place the both sides of described a plurality of pyrocondensation full skirts respectively, are used to shield the edge of each outstanding part.
2. the adiabatic liquid nitrogen tube connector of High-Voltage Insulation according to claim 1 is characterized in that, described outer tube and interior pipe are strengthened the epoxy pipe by glass fibre and made.
3. the adiabatic liquid nitrogen tube connector of High-Voltage Insulation according to claim 1 is characterized in that the described insulation and thermal insulation material that charges into the seal cavity interlayer is the SiO2 aeroge.
4. the adiabatic liquid nitrogen tube connector of High-Voltage Insulation according to claim 1 is characterized in that, also has one to take out/inflate and chew on the wall of the outer tube of described main body, is connected as a single entity with outer tube wall, and communicates with the seal cavity interlayer, and it further comprises:
Bleed and chew body, be the pipe shape, the wall of its underpart and outer tube is tightly connected, and its top is a ring flange, be used for take out/aerating device is connected, and a protruding ring is arranged on the wall within it;
Sealing plug for cylindric, places described bleeding to chew on the protruding ring of body inwall, and there is the externally threaded screw terminal of tool its underpart, and female hole of planting for the knob instrument is arranged at its top, and two concave ring grooves are arranged on the face of cylinder of sealing plug;
Two O-ring seals place respectively in described two concave ring grooves;
The filter course back-up ring places described bleeding to chew under the protruding ring of body inwall, and there is penetrating screw at its center, with the screw terminal threaded engagement on the described sealing plug;
The aeroge filter course, place described filter course back-up ring below.
5. the adiabatic liquid nitrogen tube connector of High-Voltage Insulation according to claim 4 is characterized in that described aeroge filter course is a chemical ﹠ blended fabric, and its thickness is 4～10 millimeters.
6. the adiabatic liquid nitrogen tube connector of High-Voltage Insulation according to claim 1 is characterized in that the number of described a plurality of pyrocondensation full skirts is 4～10.
7. the adiabatic liquid nitrogen tube connector of High-Voltage Insulation according to claim 1 is characterized in that the left part of described main body is connected with the hts power cable termination thermostat, can directly insert the right-hand member of hts power cable termination thermostat.
8. the adiabatic liquid nitrogen tube connector of High-Voltage Insulation according to claim 1 is characterized in that the right part of described main body is a metal tube, and its sealing joint with the liquid nitrogen transfer line is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320103954 CN2676362Y (en) | 2003-11-04 | 2003-11-04 | High voltage insulating and adiabatic liquid nitrogen connecting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320103954 CN2676362Y (en) | 2003-11-04 | 2003-11-04 | High voltage insulating and adiabatic liquid nitrogen connecting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2676362Y true CN2676362Y (en) | 2005-02-02 |
Family
ID=34474153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320103954 Expired - Lifetime CN2676362Y (en) | 2003-11-04 | 2003-11-04 | High voltage insulating and adiabatic liquid nitrogen connecting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2676362Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100477018C (en) * | 2005-07-14 | 2009-04-08 | 中国科学院电工研究所 | High-voltage isolator for high-temperature superconductive power-supply cable |
| CN103986115A (en) * | 2014-05-06 | 2014-08-13 | 昆山达功电子有限公司 | Superconducting cable insulating connecting pipe |
| CN105044573A (en) * | 2015-07-17 | 2015-11-11 | 中国科学院电工研究所 | High temperature superconductivity power device low temperature high voltage partial discharge experiment and test device |
| CN105070404A (en) * | 2015-07-17 | 2015-11-18 | 云南电网有限责任公司电力科学研究院 | Low partial discharge cold insulation high temperature hyperconductive cable operation process and method |
| CN105116243A (en) * | 2015-07-17 | 2015-12-02 | 中国科学院电工研究所 | Electrical characteristic experimental device for electrified conductor of low temperature insulating and high temperature superconducting cable |
| CN109741870A (en) * | 2019-01-24 | 2019-05-10 | 蒋莲莲 | A kind of power supply line |
-
2003
- 2003-11-04 CN CN 200320103954 patent/CN2676362Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100477018C (en) * | 2005-07-14 | 2009-04-08 | 中国科学院电工研究所 | High-voltage isolator for high-temperature superconductive power-supply cable |
| CN103986115A (en) * | 2014-05-06 | 2014-08-13 | 昆山达功电子有限公司 | Superconducting cable insulating connecting pipe |
| CN105044573A (en) * | 2015-07-17 | 2015-11-11 | 中国科学院电工研究所 | High temperature superconductivity power device low temperature high voltage partial discharge experiment and test device |
| CN105070404A (en) * | 2015-07-17 | 2015-11-18 | 云南电网有限责任公司电力科学研究院 | Low partial discharge cold insulation high temperature hyperconductive cable operation process and method |
| CN105116243A (en) * | 2015-07-17 | 2015-12-02 | 中国科学院电工研究所 | Electrical characteristic experimental device for electrified conductor of low temperature insulating and high temperature superconducting cable |
| CN105044573B (en) * | 2015-07-17 | 2017-11-14 | 中国科学院电工研究所 | The low temperature high voltage shelf depreciation experiment of high-temperature superconductor electric device and test device |
| CN105116243B (en) * | 2015-07-17 | 2017-12-05 | 中国科学院电工研究所 | Low-temperature insulation high-temperature superconductive cable electrical conductor electrical characteristic experimental provision |
| CN109741870A (en) * | 2019-01-24 | 2019-05-10 | 蒋莲莲 | A kind of power supply line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2676362Y (en) | High voltage insulating and adiabatic liquid nitrogen connecting tube | |
| CN109411148A (en) | A kind of vacuum insulation hyperconductive cable structure | |
| CN200968968Y (en) | Can-type capacitance type potential transformer | |
| CN103345990B (en) | A kind of outlet casing tube being applied to high pressure superconducting power apparatus | |
| CN2682708Y (en) | High temperature superconducting power cable terminal | |
| CN202772488U (en) | Metering combination ring network switch cabinet | |
| Kosaki | Research and development of electrical insulation of superconducting cables by extruded polymers | |
| US9875826B2 (en) | Field makeable cryostat/current connections for an HTS tape power cable | |
| CN102800468B (en) | Impregnated paper capacitive oil-SF6 transformer bushing | |
| CN100495844C (en) | High-temperature superconductive power cable terminal | |
| KR20150127660A (en) | High voltage bushing for cryogenics applications | |
| CN100477018C (en) | High-voltage isolator for high-temperature superconductive power-supply cable | |
| Kwag et al. | Research on the insulation design of a 154 kV class HTS power cable and termination | |
| CN1279817A (en) | Power transformer | |
| Baylis et al. | A Discussion on recent advances in heavy electrical plant-Superconducting cables for ac and dc power transmission | |
| CN110752575B (en) | Three-phase coaxial superconducting cable stress cone | |
| CN212136361U (en) | Sealed manufacturing device for SF6 pole-mounted circuit breaker insulating sleeve | |
| CN1235235C (en) | Capacity uniform voltage type stick shape suspending composite insulator | |
| CN1503421A (en) | Dry terminal for high-voltage cross-linked cable gas-insulation switch and installation method | |
| CN2442374Y (en) | Three phase change into two phase transformer | |
| CN201000793Y (en) | High voltage isolation switch insulator | |
| CN201233801Y (en) | Dry sheath for stress cone type transformer | |
| CN201478014U (en) | Composite insulator for extra-high voltage wire leading-in-out bushing | |
| CN101577172B (en) | Stress cone type dry sleeve of transformer | |
| KR100489268B1 (en) | Insulation thickness design process of high temperature superconduction cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131104 Granted publication date: 20050202 |