CN115555797B - Insulation repair structure and repair method for high-voltage measuring line fracture - Google Patents
Insulation repair structure and repair method for high-voltage measuring line fracture Download PDFInfo
- Publication number
- CN115555797B CN115555797B CN202211458748.7A CN202211458748A CN115555797B CN 115555797 B CN115555797 B CN 115555797B CN 202211458748 A CN202211458748 A CN 202211458748A CN 115555797 B CN115555797 B CN 115555797B
- Authority
- CN
- China
- Prior art keywords
- voltage measuring
- measuring line
- stainless steel
- adhesive tape
- layer
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Testing Relating To Insulation (AREA)
- Insulating Bodies (AREA)
Abstract
The invention discloses an insulation repair structure and a repair method for high-voltage measuring line fracture, and relates to the field of fusion device insulation treatment. The device comprises two high-pressure measurement line bodies, core wires located at the joint are wound and welded fixedly, a stainless steel sleeve is sleeved at the joint, a polyimide adhesive tape layer is wound outside the stainless steel sleeve, a polyethylene heat-shrinkable sleeve is sleeved at a position, far away from the joint and the polyimide adhesive tape layer, of the high-pressure measurement line bodies, a glass fiber tape layer and a GK composite tape layer are wound outside the polyimide adhesive tape layer and the polyethylene heat-shrinkable sleeve, and the GK composite tape layer comprises a glass fiber tape and polyimide. The repaired high-voltage measuring line is suitable for running in vacuum and low-temperature environments, has a good application value in the field of fusion reactor high-voltage measuring coil fracture insulation repair, is simple in repair structure, is simple and convenient to operate in a repair method, and can meet the requirements on insulation strength and size.
Description
Technical Field
The invention relates to the field of fusion device insulation treatment, in particular to an insulation repair structure and a repair method for high-voltage measuring line fracture.
Background
The thermonuclear fusion energy is used as a clean sustainable energy source to provide inexhaustible energy for human beings. To achieve this goal, international thermonuclear fusion test reactors (ITER) will be built and tested within the next decade. The manufacture of superconducting coils as a means of providing high temperature plasma confinement for fusion would be an extremely important component of this project. Since superconducting coils operate in very harsh environments, the insulation of the coil must meet electrical insulation performance requirements under complex mechanical, electromagnetic and thermal stress loads. For testing of electrical insulation performance, electrical connection using high voltage measurement wires is required. In the installation process of the high-voltage measuring wire, the processing of the damaged part of the high-voltage measuring wire becomes a key point influencing the electrical insulation performance test of the coil. At present, no ready experience can be found in an insulation treatment method for repairing the fracture of the high-voltage measuring line.
Disclosure of Invention
The invention provides an insulation repair structure and a repair method for high-voltage measuring line fracture, and aims to solve the insulation treatment problem of high-voltage measuring line fracture repair.
In order to solve the technical problem, one of the purposes of the present invention is to provide an insulation repair structure for a high voltage measurement line fracture, which includes two high voltage measurement line bodies after fracture, core wires at the joint of the two high voltage measurement line bodies are wound and welded, a stainless steel sleeve with two ends respectively extending to the outer side surfaces of the two high voltage measurement line bodies is sleeved at the joint of the two high voltage measurement line bodies, a polyimide adhesive tape layer is wound on the outer side of the stainless steel sleeve, two sides of the polyimide adhesive tape layer respectively extend to the outer side surfaces of the two high voltage measurement line bodies, a polyethylene heat shrinkage sleeve is sleeved at a position of the high voltage measurement line body far away from the joint and the polyimide adhesive tape layer, a glass ribbon layer is wound on the outer side of the polyimide adhesive tape layer, two sides of the glass ribbon layer extend to the outer surface of the polyethylene heat shrinkage sleeve, a GK composite ribbon layer is wound on the outer side of the glass ribbon layer, and the GK composite ribbon layer includes a glass ribbon and polyimide.
Preferably, the winding length of the core wires of the two high-voltage measurement wire bodies is 5-10cm, and the distance between two ends of the stainless steel sleeve and two ends of the core wires is more than 2 mm.
Preferably, the distance between the polyethylene heat-shrinkable sleeve and the center of the joint of the two high-pressure measuring lines is more than 200mm, a distance is reserved between the polyethylene heat-shrinkable sleeve and the polyimide adhesive tape layer, and the distance between the two ends of the polyimide adhesive tape layer and the two ends of the stainless steel sleeve is more than 20 mm.
In order to solve the above technical problem, a second object of the present invention is to provide an insulation repair method for a high voltage measuring line fracture, comprising the following steps:
s1, removing an insulating layer from the end of a high-voltage measuring line body which is broken into two parts to expose a core wire, and then installing two polyethylene heat-shrinkable sleeves and a stainless steel sleeve on the high-voltage measuring line body in advance;
s2, twisting core wires of the two high-voltage measuring wire bodies and welding and fixing the core wires by using tin soldering;
s3, movably sleeving a stainless steel sleeve to the core wire twisting position, extending two ends of the stainless steel sleeve to the outer side of the high-voltage measuring line body, and then pressing the stainless steel sleeve on the outer side of the high-voltage measuring line body for fixing;
s4, winding a polyimide adhesive tape on the outer surface of the stainless steel sleeve, wherein high-pressure measuring line bodies which are more than 20mm away from two ends of the stainless steel sleeve are used as a starting point and an end point of the polyimide adhesive tape winding;
s5, moving the two polyethylene heat-shrinkable sleeves to two high-pressure measurement line bodies away from the core wire joint and the polyimide adhesive tape respectively, and aligning the polyethylene heat-shrinkable sleeves to heat to shrink the polyethylene heat-shrinkable sleeves;
s6, preparing a wet-process resin-impregnated glass ribbon, wrapping the impregnated glass ribbon on the outer surface of a polyimide adhesive tape, extending two wound ends of the glass ribbon to the outer surface of a polyethylene heat-shrinkable sleeve, wrapping a layer of polytetrafluoroethylene film, heating and curing according to a heating program, removing the polytetrafluoroethylene film after curing, and polishing burrs and the like on the surface;
s7, preparing a wet-process resin-impregnated glass ribbon and a GK composite ribbon, winding the impregnated glass ribbon on the surface of the cured and polished glass ribbon, continuing to wind the impregnated GK composite ribbon, wrapping a layer of polytetrafluoroethylene film, heating and curing according to a heating program, and removing the polytetrafluoroethylene film after curing is finished.
By adopting the scheme, the polyimide adhesive tape is wrapped at the fracture joint reinforced by the stainless steel sleeve for insulation, and the position of the polyethylene heat-shrinkable sleeve is arranged for preventing the subsequent GK composite tape impregnated with wet resin and the glass ribbon from being directly contacted with the insulating layer of the high-voltage measuring line body at the outermost end of the wrapping area when being wrapped, so that the problem that the insulating layer at the contact position of the outermost end of the high-voltage measuring line body is easily fractured after the wet resin is contacted with the insulating layer at the outermost end of the high-voltage measuring line body is avoided. The glass ribbon is used for wrapping the measuring line at the fracture part under the impregnation of the wet resin to reinforce the surface of the polyimide tape insulating layer to form a solidified solid part, so that the subsequent GK composite tape impregnated by the wet resin can be conveniently wrapped without generating wrinkles. The glass fiber in the GK composite belt plays a mechanical reinforcing role, the polyimide plays an electrical insulating role, and the multilayer function is set to enhance the voltage resistance and the creepage capacity of the insulation.
Preferably, in S4, the polyimide is 10mm wide and 0.025mm thick, and is wrapped in 1 to 2 layers at a 50% packing ratio.
Preferably, in S6, the glass ribbon is 20mm wide and 0.1mm thick, and is wrapped with 25 to 30 layers at a 50% packing ratio.
Preferably, in S7, the glass ribbon is 20mm wide and 0.1mm thick, and is wrapped with 1 to 2 layers at a 50% packing ratio.
Preferably, in S7, the GK composite belt comprises a glass ribbon with the width of 25mm and the thickness of 0.25mm and polyimide with the width of 21mm and the thickness of 0.05mm, and is wrapped by 9-12 layers with the 50% overlapping rate.
Preferably, in S6 and S7, the wet process resin includes a resin having a mass ratio of 4:1 and an aliphatic amine curing agent.
Through adopting above-mentioned scheme, the wet process resin of this application except can playing the bonding of glass ribbon and GK composite tape fixed, its this application also has certain insulating effect.
Preferably, in S6 and S7, the heating curing temperature is 60-80 ℃, and the curing time is 12-18h.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
after the repair insulation treatment of the high-voltage measuring line fracture, the repair insulation treatment method is suitable for operation in vacuum and low-temperature environments, has a good application value in the field of fusion reactor high-voltage measuring coil fracture insulation repair, is simple in repair structure, is simple and convenient to operate, and meets requirements on insulation strength and size.
Drawings
FIG. 1: the invention relates to a partial section structure diagram of an insulation repair structure for high-voltage measuring line fracture;
FIG. 2: the invention relates to an integral section structure diagram of an insulation repair structure for high-voltage measuring line fracture;
wherein the reference numbers of the drawings in the specification are as follows: 1. a high-voltage measuring wire body; 11. a core wire; 2. a stainless steel sleeve; 3. a polyimide tape layer; 4. polyethylene heat-shrinkable sleeving; 5. a glass ribbon; 6. GK composite belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example one
An insulation repair structure for high-voltage measuring line fracture is shown in fig. 1-2 and comprises two high-voltage measuring line bodies 1 formed after fracture, core wires 11 of the high-voltage measuring line bodies 1 extend out of fracture ports, the core wires 11 of the two high-voltage measuring line bodies 1 are mutually wound and welded and fixed, and the distance between the fracture ports of the two high-voltage measuring line bodies 1 is about 10 cm.
The outer sides of the two core wires 11 are fixedly sleeved with stainless steel sleeves 2, the length of each stainless steel sleeve 2 is 15mm, the diameter of each stainless steel sleeve 2 is 3.5mm, two ends of each stainless steel sleeve 2 extend and are sleeved on the outer sides of the high-voltage measurement line bodies 1 on two sides respectively, and the length of the two ends of each stainless steel sleeve 2 sleeved with the high-voltage measurement line bodies 1 is about 2.5 mm. The polyimide adhesive tape layer 3 is wound on the outer side of the stainless steel sleeve 2, and the outer side of the high-voltage measurement wire body 1 which is about 200mm away from the two ends of the stainless steel sleeve 2 is used as the starting point and the end point of the winding of the polyimide adhesive tape layer 3.
The polyethylene heat shrinkage sleeve 4 with the length of 100mm and the diameter of 4-5mm is fixedly sleeved outside the high-pressure measuring line 1 which is positioned at the 200m connecting midpoint of the two high-pressure measuring lines 1. The outer side of the polyimide adhesive tape layer 3 is sequentially wound with a glass fiber tape layer 5 and a GK composite tape layer 6, two ends of the glass fiber tape layer 5 and the GK composite tape layer 6 are wound and extend to the outer surface of the polyethylene heat-shrinkable sleeve 4, and the starting end and the tail end of each layer are backwards about 5mm relative to the previous layer.
The insulation repair method for the high-voltage measuring line fracture comprises the following steps:
s1, removing a 15mm polyimide insulating layer from the ends of two high-pressure measuring line bodies which are broken into two parts to expose a core wire, and then pre-installing a polyethylene heat-shrinkable sleeve with the length of 100mm and the diameter of 4-5mm and a stainless steel sleeve with the length of 15mm and the diameter of 3.5mm on one high-pressure measuring line body;
s2, twisting the core wires of the two high-voltage measuring wire bodies with the polyimide insulating layers removed together to form a length of about 10mm, and welding the core wires by using tin soldering;
s3, moving a stainless steel sleeve with the length of 15mm and the diameter of 3.5mm to be sleeved at a core wire twisting position of 10mm, extending two ends of the stainless steel sleeve to the outer side of the high-voltage measuring line body by about 2.5mm respectively, and then pressing the stainless steel sleeve on the outer side of the high-voltage measuring line body by using a pressure clamp for fixing;
s4, moving two polyethylene heat-shrinkable sleeves with the length of 100mm and the diameter of 4-5mm to a position 200mm away from the center of the joint of the two high-pressure measuring lines, heating to 150 ℃ by using a heat drying gun, and heating the polyethylene heat-shrinkable sleeves in alignment with the polyethylene heat-shrinkable sleeves to shrink the polyethylene heat-shrinkable sleeves;
s5, using a polyimide adhesive tape layer with a 50% overlapping rate to be arranged at the joint of the high-pressure measuring line bodies, namely the outer side of the stainless steel connecting pipe, and using the high-pressure measuring line bodies with the distance of more than 20mm from the two ends of the stainless steel connecting pipe as the starting point and the end point of the polyimide adhesive tape with the width of 10mm and the thickness of 0.025mm;
s6, preparing a wet-process resin impregnated glass ribbon, soaking the surface of the glass ribbon and removing redundant wet-process resin, wrapping the impregnated glass ribbon at the joint of high-pressure measuring line bodies according to a 50% overlapping rate, extending two wound ends of the glass ribbon to the outer surface of a polyethylene heat-shrinkable sleeve pipe, wrapping 25 layers of the impregnated glass ribbon at two sides of the center of the joint of the two high-pressure measuring line bodies by 230mm, wrapping a polytetrafluoroethylene film, heating and curing according to a heating program, heating at 80 ℃ for 12h, removing the polytetrafluoroethylene film after curing, and polishing burrs on the surface and the like by using a file;
s7, preparing wet-process resin impregnated glass ribbons and GK composite ribbons, soaking the surfaces of the glass ribbons and the GK composite ribbons, removing surplus wet-process resin, overlapping and wrapping 50% of the impregnated glass ribbons on the surface of the cured and polished glass ribbon layer, then overlapping and wrapping 9 layers of the impregnated GK composite ribbons according to 50% and enabling the starting end and the tail end of each layer to retreat about 5mm relative to the previous layer, wrapping a layer of polytetrafluoroethylene film, heating and curing according to a heating program, heating at 80 ℃ for 12h, and removing the polytetrafluoroethylene film after curing.
Wherein, the high-voltage measurement line size is: the surface of the core wire is plated with silver copper material with the diameter of 0.97mm and an insulating layer of polyimide with the thickness of 1.25 mm. The polyimide tape used had the dimensions: the width is 10mm, and the thickness is 0.025mm; the GK composite belt is characterized in that G: a high-strength glass ribbon with a width of 25mm and a thickness of 0.25 mm; k: a polyimide film 21mm wide and 0.05mm thick. Glass fiber tape: 20mm wide and 0.1mm thick. The wet resin comprises the following components in percentage by mass of 4:1 bisphenol A epoxy resin and an aliphatic amine curing agent, wherein the aliphatic amine curing agent is triethylene tetramine.
Before the high-voltage measurement line body is broken, an electrical insulation performance test and a direct-current voltage withstand test are carried out: the test voltage is 30kV, the maximum leakage current is 4.28 muA, and the minimum resistance is 7000 MOmega; paschen test: the test voltage is 15kV, and the maximum leakage current is 6.8 muA.
After the high-voltage measuring line body is broken and repaired, an electrical insulation performance test is performed, namely, cold and hot impact is performed, and then direct-current withstand voltage and Paschen test are performed. Conditions of cold-heat shock: reducing the temperature from room temperature to 80K according to the condition that the temperature reduction rate is less than 10 ℃/h, and the temperature difference of each part does not exceed 50 ℃; then the temperature is increased from 80K to room temperature according to the temperature of less than 10 ℃/h, and the temperature difference of each part is not more than 50 ℃. And D, direct-current voltage withstand test: the test voltage is 30kV, the maximum leakage current is 6.2 muA, and the minimum resistance is 4839 MOmega; paschen test: the test voltage is 15kV, the maximum leakage current is 1 muA, and is far less than 20 muA.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The insulation repair structure for the high-voltage measuring line fracture is characterized by comprising two high-voltage measuring line bodies (1) after fracture, wherein core wires (11) at the joint of the high-voltage measuring line bodies (1) are wound and fixed in a welding mode, two stainless steel sleeves (2) with the ends respectively extending to the outer side surfaces of the two high-voltage measuring line bodies (1) are sleeved at the joint of the two high-voltage measuring line bodies (1), a polyimide adhesive tape layer (3) is wound on the outer side of each stainless steel sleeve (2), two sides of each polyimide adhesive tape layer (3) respectively extend to the outer side surfaces of the two high-voltage measuring line bodies (1), polyethylene heat-shrinkable sleeves (4) are sleeved at positions, far away from the joint and the polyimide adhesive tape layer (3), of the high-voltage measuring line bodies (1), a glass yarn belt layer (5) is wound on the outer side of the polyimide adhesive tape layer (3), two sides of the glass yarn belt layer (5) extend to the outer surface of each polyethylene sleeve (4), a GK composite belt layer (6) is wound on the outer side of each glass yarn belt layer (5), and each GK composite belt comprises a glass belt and a polyimide belt.
2. The insulation repair structure for the high voltage measuring line fracture according to claim 1, wherein the winding length of the core wire (11) of the two high voltage measuring line bodies (1) is 5-10cm, and the distance between the two ends of the stainless steel sleeve (2) and the two ends of the core wire (11) is more than 2 mm.
3. The insulation repair structure for high-voltage measuring line fracture according to claim 1, wherein the distance between the polyethylene heat-shrinkable sleeve (4) and the center of the joint of the two high-voltage measuring line bodies (1) is more than 200mm, a gap is reserved between the polyethylene heat-shrinkable sleeve and the polyimide adhesive tape layer (3), and the distance between the two ends of the polyimide adhesive tape layer (3) and the two ends of the stainless steel sleeve (2) is more than 20 mm.
4. A method of insulation repair of a broken insulation repair structure of a high voltage measuring line according to any of claims 1 to 3, comprising the steps of:
s1, removing an insulating layer from the ends of a high-voltage measuring line body which is broken into two parts to expose a core wire, and then mounting two polyethylene heat-shrinkable sleeves and a stainless steel sleeve on the high-voltage measuring line body in advance;
s2, twisting core wires of the two high-voltage measuring wire bodies and welding and fixing the core wires by using tin soldering;
s3, movably sleeving a stainless steel sleeve to the core wire twisting position, extending two ends of the stainless steel sleeve to the outer side of the high-voltage measuring line body, and then pressing the stainless steel sleeve on the outer side of the high-voltage measuring line body to fix;
s4, winding a polyimide adhesive tape on the outer surface of the stainless steel sleeve, wherein high-pressure measuring line bodies which are more than 20mm away from two ends of the stainless steel sleeve are used as a starting point and an end point of the polyimide adhesive tape winding;
s5, moving the two polyethylene heat-shrinkable sleeves to two high-pressure measurement line bodies away from the core wire joint and the polyimide adhesive tape respectively, and aligning the polyethylene heat-shrinkable sleeves to heat to shrink the polyethylene heat-shrinkable sleeves;
s6, preparing a wet-process resin-impregnated glass ribbon, wrapping the impregnated glass ribbon on the outer surface of a polyimide adhesive tape, extending two wound ends of the glass ribbon to the outer surface of a polyethylene heat-shrinkable sleeve, wrapping a layer of polytetrafluoroethylene film, heating and curing according to a heating program, removing the polytetrafluoroethylene film after curing, and polishing burrs and the like on the surface;
s7, preparing a wet-process resin-impregnated glass ribbon and a GK composite ribbon, winding the impregnated glass ribbon on the surface of the cured and polished glass ribbon, continuing to wind the impregnated GK composite ribbon, wrapping a layer of polytetrafluoroethylene film, heating and curing according to a heating program, and removing the polytetrafluoroethylene film after curing is finished.
5. The insulation repair method for high voltage measurement line rupture according to claim 4, wherein in S4, the polyimide has a width of 10mm and a thickness of 0.025mm, and is wrapped by 1-2 layers with a 50% lap ratio.
6. The insulation repair method for high voltage measurement line breakage according to claim 4, wherein in S6, the glass ribbon has a width of 20mm and a thickness of 0.1mm, and is wrapped by 25 to 30 layers with a 50% lap ratio.
7. The insulation repair method for high voltage measurement line breakage according to claim 4, wherein in S7, the glass ribbon has a width of 20mm and a thickness of 0.1mm, and is wrapped by 1 to 2 layers with a 50% lap ratio.
8. The insulation repair method for high voltage measurement wire fracture according to claim 4, wherein in S7, the GK composite tape comprises 25mm wide and 0.25mm thick glass fiber tape and 21mm wide and 0.05mm thick polyimide, and is wrapped by 9-12 layers with a 50% lap ratio.
9. The insulation repair method for high voltage measuring wire breakage as claimed in claim 4, wherein in S6 and S7, the wet process resin comprises, by mass, 4:1 and an aliphatic amine curing agent.
10. The insulation repair method for a high voltage measurement line fracture according to claim 4, wherein in S6 and S7, the heating curing temperature is 60 to 80 ℃ and the curing time is 12 to 18 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211458748.7A CN115555797B (en) | 2022-11-18 | 2022-11-18 | Insulation repair structure and repair method for high-voltage measuring line fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211458748.7A CN115555797B (en) | 2022-11-18 | 2022-11-18 | Insulation repair structure and repair method for high-voltage measuring line fracture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115555797A CN115555797A (en) | 2023-01-03 |
| CN115555797B true CN115555797B (en) | 2023-03-24 |
Family
ID=84769827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211458748.7A Active CN115555797B (en) | 2022-11-18 | 2022-11-18 | Insulation repair structure and repair method for high-voltage measuring line fracture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115555797B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007174773A (en) * | 2005-12-21 | 2007-07-05 | Viscas Corp | Cable connection and heat shrinkable tube used therefor |
| CN101567229B (en) * | 2008-04-25 | 2012-11-07 | 上海斯麟特种设备工程有限公司 | Novel alloy conductor, preparation method thereof and relevant cables |
| CN102290645B (en) * | 2011-07-15 | 2013-04-17 | 广东长牛电气股份有限公司 | Multi-core cable joint and mounting method thereof |
| CN108011209B (en) * | 2018-01-12 | 2024-05-14 | 国网四川省电力公司成都供电公司 | Live repair device and live repair method for high-voltage cable connector grounding wire |
| CN111613912A (en) * | 2020-06-23 | 2020-09-01 | 沈阳工业大学通益科技有限公司 | High-temperature motor oil-submersible cable connecting device |
| CN114440051A (en) * | 2020-11-04 | 2022-05-06 | 中国石油化工股份有限公司 | Electrothermal repair method for glass steel tube |
-
2022
- 2022-11-18 CN CN202211458748.7A patent/CN115555797B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115555797A (en) | 2023-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2018196099A1 (en) | Connector assembly of two low-temperature superconducting cable terminals and fabrication method therefor | |
| CN101752044A (en) | Core rod of ultra-high-voltage post composite insulator and manufacturing method thereof | |
| CN1734874B (en) | Equal diameter connector of power cable, and manufacturing process thereof | |
| CN105590706A (en) | Production technology method of glass fiber reinforced plastic capacitance transformer bushing | |
| CN115555797B (en) | Insulation repair structure and repair method for high-voltage measuring line fracture | |
| CN115621040B (en) | Insulation repair structure and repair method for helium inlet and outlet pipes of superconducting magnet coil | |
| MX2007004486A (en) | Superconducting cable connection structure. | |
| Huang et al. | High voltage test of ITER feeder components under Paschen condition | |
| JP6355914B2 (en) | Superconducting coil and method of manufacturing the superconducting coil | |
| Wei et al. | Progress of the ITER correction coils in China | |
| CN113270224B (en) | High-voltage-resistant superconducting cable potential detection wire insulation leading-out structure | |
| CN209199613U (en) | A kind of stick location probe coil component | |
| CN112469153A (en) | Energy-saving efficient heating cable | |
| CN115966396B (en) | Insulation treatment method for double joints of superconducting magnet | |
| CN114242314B (en) | Polyester glass fiber covered wire and manufacturing method thereof | |
| JP5115770B2 (en) | Superconducting cable | |
| Baker et al. | Manufacture of the poloidal field conductor insert coil (PFCI) | |
| CN217789191U (en) | Power cable melting repair device | |
| JP7377167B2 (en) | stationary induction equipment | |
| JPH01179406A (en) | Manufacture of molded coil | |
| JP2563673B2 (en) | Cooling structure for electrical equipment | |
| Portone et al. | Status of the EDIPO Project | |
| Dell'Orco et al. | Fabrication and component testing results for a Nb/sub 3/Sn dipole magnet | |
| CN103177834A (en) | Electric isolator and method for producing same | |
| CN107659021A (en) | Water hair machine stator coil end flexible insulation structure |
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 |