CN213860249U - Ultrahigh-voltage direct-current submarine cable factory joint vulcanizing device - Google Patents
Ultrahigh-voltage direct-current submarine cable factory joint vulcanizing device Download PDFInfo
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- CN213860249U CN213860249U CN202022370655.1U CN202022370655U CN213860249U CN 213860249 U CN213860249 U CN 213860249U CN 202022370655 U CN202022370655 U CN 202022370655U CN 213860249 U CN213860249 U CN 213860249U
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Abstract
The utility model discloses a super-high voltage direct current submarine cable factory joint vulcanizing device, which is characterized by comprising two factory joints, a thermocouple and an induction coil; an inner shielding reserved layer, a stress cone, an insulating reserved layer and an insulating outer shielding reserved layer are arranged between the conductor and the factory joint; the outer walls of the two conductors are wrapped with an inner shielding recovery layer; an insulating layer is filled between the outer wall of the inner shielding layer and the two stress cones; the outer walls of the two insulating layers are wrapped with insulating outer shielding recovery layers; the outer shielding recovery layer of the insulation outer shielding layer is wrapped with a lead pipe sheath recovery layer; the thermocouple covers the outside of the lead pipe sheath recovery layer, and the induction coil surrounds the outside of the thermocouple in a spiral mode. In this way, the utility model relates to a superhigh pressure direct current extra large cable mill connects curing equipment, this curing equipment adopt simultaneously from the cable outside to the inside heat transfer of cable and from the cable inside to the outside heat transfer of cable, make mill connect the insulating layer to be heated more evenly.
Description
Technical Field
The utility model belongs to the technical field of the power cable and specifically relates to a superhigh pressure direct current submarine cable mill connects curing equipment is related to.
Background
The ultrahigh-voltage flexible direct-current submarine cable system is a key technology for realizing offshore wind power transmission, compared with high-voltage alternating-current power transmission, the high-voltage flexible direct-current power transmission has the characteristics of large transmission capacity, long transmission distance, high system stability and the like, particularly the flexible direct-current power transmission system is flexible and easy to cope with the randomness trend of distributed energy sources, and has recently gained wide attention of domestic and foreign scientific research institutions and submarine cable manufacturers and also gained many achievements.
However, the factory joint of the high-voltage direct-current submarine cable cannot achieve breakthrough progress all the time, and mainly because the factory joint always conducts heat from the outside of the cable to the inside of the cable, when the insulation thickness of the direct-current submarine cable or the alternating-current submarine cable is too thick, the inner layer and the outer layer of the factory joint are heated unevenly in the insulation vulcanization process in a single heat conduction mode, so that the vulcanization effect is influenced, and further the quality of the factory joint is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a superhigh pressure direct current submarine cable mill connects curing equipment, can make insulating ectonexine be heated evenly.
In order to solve the technical problem, the utility model discloses a technical scheme be: the ultra-high voltage direct current submarine cable factory joint vulcanizing equipment comprises two factory joints, a thermocouple and an induction coil, wherein the two factory joints are connected through exposed conductors;
an inner shielding reserved layer, a stress cone, an insulating reserved layer and an insulating outer shielding reserved layer are arranged between the conductor and the factory joint;
the outer walls of the two conductors are wrapped with an inner shielding recovery layer;
an insulating layer is filled between the outer wall of the inner shielding layer and the two stress cones;
the outer walls of the two insulating layers are wrapped with insulating outer shielding recovery layers;
the outer shielding recovery layer of the insulation outer shielding layer is wrapped with a lead pipe sheath recovery layer;
the thermocouple covers the outside of the lead pipe sheath recovery layer, and the induction coil surrounds the outside of the thermocouple in a spiral mode.
In a preferred embodiment of the present invention, the two conductors are connected by welding.
In a preferred embodiment of the present invention, the inner shield reserved layer, the stress cone, the insulating reserved layer and the insulating outer shield reserved layer are sequentially connected in the direction from the conductor to the factory joint.
In a preferred embodiment of the present invention, the insulating layer is made of crosslinked polyethylene.
In a preferred embodiment of the present invention, the inner shield recovery layer covers the inner shield reserved layer after extending from both ends of the inner shield recovery layer.
In a preferred embodiment of the present invention, the insulating layer covers the insulating reservation layer after extending from both ends of the top of the insulating layer.
In a preferred embodiment of the present invention, the two ends of the insulating outer shielding recovery layer are extended to cover the insulating outer shielding reserved layer.
In a preferred embodiment of the present invention, a heating power source is connected to the thermocouple.
In a preferred embodiment of the present invention, a high frequency power supply is connected to the induction coil.
In a preferred embodiment of the present invention, the thermocouple and the induction coil operate simultaneously.
The utility model has the advantages that: the utility model relates to a superhigh pressure direct current extra large cable mill connects curing equipment, this curing equipment adopt simultaneously from the cable outside to the inside heat transfer of cable and from the cable inside to the outside heat transfer of cable, make the mill connect the insulating layer to be heated more evenly.
Drawings
Fig. 1 is a schematic structural diagram of a vulcanization device for a joint of an ultrahigh-pressure direct-current submarine cable factory.
FIG. 2 is a structural diagram of a factory joint at a conductor of a vulcanizing device for a factory joint of an extra-high voltage direct current submarine cable.
The parts in the drawings are numbered as follows: 1. a factory joint; 2. a thermocouple; 3. an induction coil; 4. a conductor; 5. an inner shield reserved layer; 6. a stress cone; 7. an insulating reserved layer; 8. an insulating outer shield reserve layer; 9. an inner shield recovery layer; 10. an insulating layer; 11. an insulating outer shield recovery layer; 12. a lead pipe sheath recovery layer; 13. a heating power supply; 14. a high frequency power supply.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1 and 2, an ultra-high voltage dc submarine cable factory joint vulcanizing device includes two factory joints 1, a thermocouple 2 and an induction coil 3, wherein the two factory joints 1 are connected by exposed conductors 4, and the two conductors 4 are connected by welding, so as to complete the primary connection of the two factory joints 1.
Conductor 4 with be equipped with internal shield between the mill joint 1 and reserve layer 5, stress cone 6, insulating reserve layer 7 and insulating outer shield reserve layer 8, internal shield reserve layer 5 the stress cone 6 insulating reserve layer 7 and insulating outer shield reserve layer 8 with conductor 4 extremely the direction of mill joint 1 links gradually.
The stress cone 6 makes the electric field distribution uniform, and because the recovered cross-linked polyethylene and the cross-linked polyethylene before recovery are different in nature, the electric field can be prevented from being excessively concentrated in the part by making the trapezoidal structure, and the insulating layer 10 of the cross-linked polyethylene is prevented from being broken down.
Two the outer wall parcel of conductor 4 has internal shield to resume layer 9, the internal shield resumes 9 both ends and extends the back and covers internal shield reservation layer 5 avoids internal shield resumes layer 9 can and original internal shield layer produce the gap when covering.
An insulating layer 10 is filled between the outer wall of the inner shielding layer and the two stress cones 6, the two ends of the top of the insulating layer 10 extend to cover the insulating reserved layer 7, and gaps between the insulating layer 10 and the original insulating layer 10 are avoided when the insulating layer 10 covers.
Two insulating layer 10 outer wall parcel has insulating external shield to resume layer 11, insulating external shield resumes 11 both ends and extends the back and cover insulating external shield reserves layer 8 avoids insulating external shield resumes layer 11 can and original insulating external shield produces the gap when covering.
And the insulating outer shielding recovery layer 11 is wrapped with a lead pipe sheath recovery layer 12.
The thermocouple 2 covers the outer side of the lead pipe sheath recovery layer 12, the thermocouple 2 is connected with a heating power supply 13, when the factory joint 1 is insulated and vulcanized, the thermocouple 2 is electrified and heated through the heating power supply 13, the thermocouple 2 covers the outer side of the factory joint 1 at the joint, the temperature is enabled to be transferred from the outer part of the factory joint 1 to the inner part, and the insulation layer 10 of the factory joint 1 at the joint is heated.
The induction coil 3 is spirally wound on the outer side of the thermocouple 2, a high-frequency power supply 14 is connected to the induction coil 3, when the factory joint 1 is insulated and vulcanized, the induction coil 3 is electrified and heated by the high-frequency power supply 14, eddy current is generated on the conductor 4, the conductor 4 is heated, the temperature is transferred from the inside to the outside of the factory joint 1 at the joint, and the insulating layer 10 of the factory joint 1 at the joint is heated.
The thermocouple 2 and the induction coil 3 work simultaneously, the thermocouple 2 heats to transfer heat from the outside of the factory joint 1 to the inside, meanwhile, the conductor 4 is heated by the induction coil 3 to transfer heat from the inside of the factory joint 1 to the outside, the single heating mode of the thermocouple 2 is changed when the factory joint 1 is insulated and vulcanized, the inner layer and the outer layer of the insulating layer 10 of the factory joint 1 are heated more uniformly, the performance of the factory joint 1 is better, the problem that when the thickness of the insulating layer 10 of the factory joint 1 is overlarge, the inner layer and the outer layer of the factory joint 1 are heated non-uniformly by the single heat transfer mode to influence the quality of the factory joint 1 is solved, the thickness of the insulating layer 10 of the factory joint 1 is moderate, and the heat transfer of the inner layer and the outer layer is relatively uniform by the single heat transfer mode, however, the insulation vulcanization efficiency of the factory joint 1 can be improved by adopting a bidirectional heat transfer mode, and the production efficiency of the factory joint 1 is further improved.
According to the different structural sizes and the different insulating materials and insulating thicknesses of the conductors 4, the power of the induction coil 3 and the power of the thermocouple 2 are adjusted, so that the comprehensive heat transfer effect is optimal, and the inner layer and the outer layer of the insulating layer 10 are uniformly heated.
In order that the induction coil 3 does not form eddy current in the thermocouple 2, the thermocouple 2 is made of non-magnetic metal or non-metallic material such as ceramic or plastic.
After the conductor 4 is welded and recovered, firstly carrying out internal shielding recovery, then carrying out insulation recovery, wherein the insulation recovery process is to fill a crosslinked polyethylene insulating material between the outer wall of the internal shielding layer and the two stress cones 6, heating the filled crosslinked polyethylene by the thermocouple 2 and the induction coil 3 after the filling is finished, and carrying out chemical reaction on the filled crosslinked polyethylene so as to fully crosslink the polyethylene insulating material, namely, the polyethylene is reacted by a linear molecular structure to generate a net-shaped molecular structure, crosslinking byproducts are generated in the crosslinking process, and some byproducts can escape from the insulating layer 10 in a form of generating bubbles, and finally carrying out insulation external shielding recovery and lead pipe sheath recovery.
Compared with the prior art, the utility model relates to a superhigh pressure direct current extra large cable mill connects curing equipment, this curing equipment adopt simultaneously from the cable outside to the inside heat transfer of cable and from the cable inside to the outside heat transfer of cable, make mill connect the insulating layer to be heated more evenly.
In the description of the present invention, it should be noted that all the components are general standard components or components known to those skilled in the art, the structure and principle thereof are all known to those skilled in the art through technical manuals or through conventional testing methods, and the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the positions or positional relationships based on the drawings, or the positions or positional relationships that the products of the present invention are usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated devices or elements must have specific positions, be constructed and operated in specific positions, and thus, cannot be understood as limitations of the present invention.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The ultra-high voltage direct current submarine cable factory joint vulcanizing equipment is characterized by comprising two factory joints, a thermocouple and an induction coil, wherein the two factory joints are connected through exposed conductors;
an inner shielding reserved layer, a stress cone, an insulating reserved layer and an insulating outer shielding reserved layer are arranged between the conductor and the factory joint;
the outer walls of the two conductors are wrapped with an inner shielding recovery layer;
an insulating layer is filled between the outer wall of the inner shielding recovery layer and the two stress cones;
the outer walls of the two insulating layers are wrapped with insulating outer shielding recovery layers;
the outer shielding recovery layer of the insulation outer shielding layer is wrapped with a lead pipe sheath recovery layer;
the thermocouple covers the outside of the lead pipe sheath recovery layer, and the induction coil surrounds the outside of the thermocouple in a spiral mode.
2. An ultra high voltage dc submarine cable plant joint curing apparatus according to claim 1, wherein the two conductors are connected by welding.
3. The vulcanization equipment of an extra-high voltage direct current submarine cable factory joint according to claim 1, wherein the inner shield reserved layer, the stress cone, the insulation reserved layer and the insulation outer shield reserved layer are connected in sequence in the direction from the conductor to the factory joint.
4. The vulcanization equipment of an extra-high voltage direct current submarine cable factory joint according to claim 1, wherein the insulation layer material is cross-linked polyethylene.
5. The ultra-high voltage direct current submarine cable factory joint vulcanizing device according to claim 1, wherein the inner shield reserved layer is covered after two ends of the inner shield recovery layer extend.
6. The vulcanization equipment of an extra-high voltage direct current submarine cable factory joint according to claim 1, wherein the insulation reserve layer is covered after the two ends of the top of the insulation layer are extended.
7. The vulcanization equipment for the factory joint of the extra-high voltage direct current submarine cable according to claim 1, wherein the reserved layer of the insulation outer shield is covered after two ends of the recovery layer of the insulation outer shield extend.
8. The ultra-high voltage direct current submarine cable plant joint vulcanization equipment of claim 1, wherein the thermocouple is connected with a heating power supply.
9. The vulcanization equipment of an extra-high voltage direct current submarine cable factory joint according to claim 1, wherein a high frequency power supply is connected to the induction coil.
10. The uhp dc submarine cable plant joint curing apparatus according to claim 1, wherein said thermocouple and said induction coil operate simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022370655.1U CN213860249U (en) | 2020-10-22 | 2020-10-22 | Ultrahigh-voltage direct-current submarine cable factory joint vulcanizing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022370655.1U CN213860249U (en) | 2020-10-22 | 2020-10-22 | Ultrahigh-voltage direct-current submarine cable factory joint vulcanizing device |
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| CN213860249U true CN213860249U (en) | 2021-08-03 |
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| CN202022370655.1U Active CN213860249U (en) | 2020-10-22 | 2020-10-22 | Ultrahigh-voltage direct-current submarine cable factory joint vulcanizing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454766A (en) * | 2020-10-22 | 2021-03-09 | 江苏亨通高压海缆有限公司 | Ultrahigh-voltage direct-current submarine cable factory joint vulcanizing device |
| CN117584392A (en) * | 2024-01-19 | 2024-02-23 | 哈尔滨理工大学 | Pressure-maintaining rectifying type factory joint heating system and application method thereof |
-
2020
- 2020-10-22 CN CN202022370655.1U patent/CN213860249U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454766A (en) * | 2020-10-22 | 2021-03-09 | 江苏亨通高压海缆有限公司 | Ultrahigh-voltage direct-current submarine cable factory joint vulcanizing device |
| CN117584392A (en) * | 2024-01-19 | 2024-02-23 | 哈尔滨理工大学 | Pressure-maintaining rectifying type factory joint heating system and application method thereof |
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