CN220985308U - Sealed voltage-sharing structure of oil-immersed ultrahigh voltage cable - Google Patents
Sealed voltage-sharing structure of oil-immersed ultrahigh voltage cable Download PDFInfo
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- CN220985308U CN220985308U CN202322601237.2U CN202322601237U CN220985308U CN 220985308 U CN220985308 U CN 220985308U CN 202322601237 U CN202322601237 U CN 202322601237U CN 220985308 U CN220985308 U CN 220985308U
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- 238000007789 sealing Methods 0.000 claims abstract description 67
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000005056 compaction Methods 0.000 claims description 12
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000005684 electric field Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model belongs to the technical field of ultrahigh voltage equipment, and discloses an oil immersed ultrahigh voltage cable sealing and equalizing structure. The pressure equalizing protection wire sleeve (6) is sleeved outside the ultra-high voltage cable (2), the flange (4) is sleeved outside the pressure equalizing protection wire sleeve (6), one end of the stress tube (10) is inserted between the shielding layer and the insulating layer of the crust removing section (12) of the ultra-high voltage cable (2), the pressure equalizing copper strip (11) is arranged outside the stress tube (10), the core hoop (9) is arranged outside the pressure equalizing copper strip (11), the pressure equalizing sealing pressing sleeve (8) is sleeved outside the ultra-high voltage cable (2) on the side face of the core hoop (9), and the pressure equalizing shielding body (3) is sleeved outside the ultra-high voltage cable (2). The oil immersed type ultrahigh voltage cable sealing pressure equalizing structure has the advantages of simple structure, high pressure resistance, good pressure equalizing performance, simple processing, convenient assembly and improvement of safety, stability and reliability of equipment.
Description
Technical Field
The utility model belongs to the technical field of ultrahigh voltage equipment, and particularly relates to an oil-immersed ultrahigh voltage cable sealing pressure equalizing structure.
Background
At present, the application of high-voltage cables is very common, the types of matched cable plug sockets are diversified day by day, the withstand voltage of the high-voltage cables is from tens of kilovolts to hundreds of kilovolts, but the ultra-high-voltage cables are limited by foreign import, the imported cables and the matched plug sockets are extremely expensive, and the domestic cables are relatively cheap, but the ultra-high-voltage plug sockets are not assembled, so that the ultra-high-voltage cables cannot be used. The improvement of voltage leads to ionization corona to make the security, stability, the reliability of equipment influenced, and to realize long-distance transmission and with low costs, small, safe and reliable just needs to design an sealed voltage-sharing structure of oil-immersed type superhigh pressure cable and realizes the conversion transmission, satisfies the performance requirement.
In the prior art, the technology is named as a high-voltage direct-current submarine cable Z-type sealing cable conductor and a design method thereof, and the publication number of the technology is WO2021098003A1, wherein the cable conductor of the technology comprises a central line and a plurality of single wires, and the single wires are stranded on the outer wall of the central line in a layer-by-layer superposition mode; the single wires are Z-shaped single wires, two adjacent Z-shaped single wires are mutually stacked and matched end to end, and a plurality of Z-shaped single wires are spirally and tightly wound together through a wire twisting process; and chamfer angles are arranged at the corners of the Z-shaped single lines. The Z-shaped sealing cable conductor of the high-voltage direct-current submarine cable adopts a Z-shaped single-wire round compression structure, so that the problem of high compression difficulty of a frame strander is effectively solved, the compression coefficient of the conductor is high relative to the round single-wire round compression structure, and the water blocking performance requirement of the conductor when the high-voltage direct-current submarine cable is laid in open sea can be met.
However, this technique does not relate to the technical problem and technical solution of the present application.
Disclosure of utility model
The technical problems to be solved by the utility model are as follows: aiming at the defects of the prior art, the oil immersed ultrahigh voltage cable sealing pressure equalizing structure is simple in structure, high in pressure resistance, good in pressure equalizing, simple to process, convenient to assemble and capable of improving safety, stability and reliability of equipment.
The technical scheme adopted by the utility model is as follows:
the utility model relates to an oil immersed type ultra-high voltage cable sealing pressure equalizing structure, wherein a pressure equalizing wire protecting sleeve is sleeved outside an ultra-high voltage cable, a flange is sleeved outside the pressure equalizing wire protecting sleeve, one end of a stress tube is inserted between a shielding layer and an insulating layer of a crust-removing section of the ultra-high voltage cable, a pressure equalizing copper belt is arranged outside the stress tube, a core hoop is arranged outside the pressure equalizing copper belt, a pressure equalizing sealing pressing sleeve sleeved outside the ultra-high voltage cable is arranged on the side surface of the core hoop, and a pressure equalizing shielding body is sleeved outside the ultra-high voltage cable.
The pressure equalizing sealing compaction sleeve is of a flange-shaped structure, and the sleeving part of the pressure equalizing sealing compaction sleeve extends into the pressure equalizing shielding body.
And a sealing piece is arranged between the front end of the sleeving part of the pressure equalizing sealing compaction sleeve and the groove body of the pressure equalizing shielding body.
The pressure equalizing shield body is connected with the flange through screws.
The pressure equalizing wire sheath is provided with an outwards extending wire sheath boss, and the flange is provided with an inwards extending flange boss.
When the flange is sleeved outside the pressure equalizing wire protecting sleeve, the wire protecting sleeve boss is of a structure which can be axially clamped and connected with the flange boss.
The pressure equalizing sealing compaction sleeve comprises a body part and a sleeve part, wherein the body part and the sleeve part are of T-shaped structures.
The body part of the pressure equalizing sealing compaction sleeve is attached to one side face of the core hoop, and the other side face of the core hoop is attached to the side face of the pressure equalizing wire protecting sleeve.
One end of the ultrahigh voltage cable is provided with a sealing terminal.
By adopting the technical scheme of the utility model, the working principle and the beneficial effects are as follows:
The oil-immersed ultrahigh voltage cable sealing and equalizing structure aims at the self requirement of the oil-immersed ultrahigh voltage cable sealing and equalizing structure, firstly, the oil-immersed ultrahigh voltage cable sealing structure meets the reliability and is convenient to assemble; secondly, the oil immersed type ultrahigh voltage cable voltage equalizing structure reliably realizes electric field uniformity. In order to solve the problems of reliability and convenience in assembly of the oil immersed type ultrahigh voltage cable sealing structure, a sealing piece with proper materials and moderate hardness is selected, the structure is reasonably sealed, an insulating layer of the ultrahigh voltage cable is hooped, the insulating layer is guaranteed not to deform and uniformly bear force, a wire core of the ultrahigh voltage cable is welded by a sealing terminal, no leakage is guaranteed, and the processing and the assembly are convenient; the problem that the oil immersed type ultrahigh voltage cable voltage-sharing structure reliably realizes electric field uniformity is solved, mainly through the selection of raw and other materials, the processing mode is selected, structural design realizes, and the wiring end is equipped with the voltage-sharing shield of horn mouth form, and the fixed cable adopts core hoop structure, is equipped with the stress tube in addition, and the protective insulation layer atress is even, and the end of being qualified for next round of competitions is equipped with no edge voltage-sharing wire cover, and whole structure all is favorable to even electric field.
Drawings
The following is a brief description of what is expressed in the drawings of this specification and the references in the drawings:
Fig. 1 is a schematic cross-sectional structural view of an oil immersed ultrahigh voltage cable seal equalizing structure according to the present utility model;
The reference numerals in the drawings are: 1. the sealing terminal, 2, the ultra-high voltage cable, 3, the voltage-equalizing shielding body, 4, the flange, 5, the screw, 6, the voltage-equalizing wire protecting sleeve, 7, the sealing piece, 8, the voltage-equalizing sealing pressing sleeve, 9, the core hoop, 10, the stress tube, 11, the voltage-equalizing copper strip, 12 and the crust removing section; 13. a sleeving part; 14. a tank body; 15. a wire protecting sleeve boss; 16. a flange boss; 17. a body part.
Detailed Description
The following describes the shape, structure, mutual position and connection relation between parts, action of parts and working principle of the specific embodiment of the present utility model by describing examples in further detail:
As shown in fig. 1, the utility model relates to an oil immersed type ultra-high voltage cable sealing pressure equalizing structure, a pressure equalizing wire protecting sleeve 6 is sleeved outside an ultra-high voltage cable 2, a flange 4 is sleeved outside the pressure equalizing wire protecting sleeve 6, one end of a stress tube 10 is inserted between a shielding layer and an insulating layer of a crust removing section 12 of the ultra-high voltage cable 2, a pressure equalizing copper belt 11 is arranged outside the stress tube 10, a core hoop 9 is arranged outside the pressure equalizing copper belt 11, a pressure equalizing sealing pressing sleeve 8 sleeved outside the ultra-high voltage cable 2 is arranged on the side surface of the core hoop 9, and a pressure equalizing shielding body 3 is sleeved outside the ultra-high voltage cable 2. The structure provides an improved technical scheme aiming at the defects in the prior art. Aiming at the self requirement of the oil-immersed ultrahigh voltage cable sealing and equalizing structure, firstly, the oil-immersed ultrahigh voltage cable sealing structure meets the reliability and is convenient to assemble; secondly, the oil immersed type ultrahigh voltage cable voltage equalizing structure reliably realizes electric field uniformity. In order to solve the problems of reliability and convenience in assembly of the oil immersed type ultrahigh voltage cable sealing structure, a sealing piece with proper materials and moderate hardness is selected, the structure is reasonably sealed, an insulating layer of the ultrahigh voltage cable 2 is hooped, the insulating layer is guaranteed not to deform and uniformly bear force, and a wire core of the ultrahigh voltage cable 2 is welded by using a sealing terminal 1, so that no leakage is guaranteed, and the processing and the assembly are facilitated; the problem that the oil immersed type ultrahigh voltage cable voltage-sharing structure reliably realizes electric field uniformity is solved, mainly through the selection of raw and other materials, the processing mode is selected, structural design realizes, and the wiring end is equipped with horn mouth form's voltage-sharing shield 3, and the fixed cable adopts core hoop 9 structure, is equipped with stress tube 10 in addition, and the protection insulating layer atress is even, and the terminal of being qualified for next round of competitions is equipped with no edge voltage-sharing wire sheath 6, and whole structure all is favorable to even electric field. The oil immersed type ultrahigh voltage cable sealing pressure equalizing structure has the advantages of simple structure, high pressure resistance, good pressure equalizing performance, simple processing, convenient assembly and improvement of safety, stability and reliability of equipment.
The pressure equalizing sealing compaction sleeve 8 is of a flange-shaped structure, and a sleeving part 13 of the pressure equalizing sealing compaction sleeve 8 extends into the pressure equalizing shielding body 3. A sealing piece 7 is arranged between the front end of the sleeving part 13 of the pressure equalizing sealing compaction sleeve 8 and the groove body 14 of the pressure equalizing shielding body 3. With the structure, the pressure equalizing sealing compacting sleeve 8 is sleeved outside the ultra-high voltage cable 2, and the pressure equalizing shielding body 3 is sleeved outside the ultra-high voltage cable 2. In this way, the pressure equalizing shield 3 is reliably connected to the pressure equalizing sealing pressing sleeve 8, and the pressure equalizing sealing pressing sleeve 8 reliably abuts against the core hoop 9, so that the arrangement of the sealing element 7 is reliably realized.
The voltage equalizing shield 3 and the flange 4 are connected through screws 5. According to the structure, the voltage-sharing shielding body 3 and the flange 4 are fixedly connected through the screw 5, the voltage-sharing shielding body 3 and the flange 4 are clamped tightly by the voltage-sharing wire-protecting sleeve 6, the core hoop 9 and the voltage-sharing sealing pressing sleeve 8, and therefore component positioning is achieved.
The equalizing wire sheath 6 is provided with an outwardly extending wire sheath boss 15, and the flange 4 is provided with an inwardly extending flange boss 16. When the flange 4 is sleeved outside the pressure equalizing wire protecting sleeve 6, the wire protecting sleeve boss 15 is of a structure which can be axially clamped and connected with the flange boss 16. After the pressure equalizing wire protecting sleeve 8 and the pressure equalizing sealing pressing sleeve 8 are arranged in place, the wire protecting sleeve boss 15 is axially clamped with the flange boss 16, and the pressure equalizing sealing pressing sleeve 8 and the pressure equalizing wire protecting sleeve 6 are fixed.
The pressure equalizing sealing compacting sleeve 8 comprises a body part 17 and a sleeving part 13, wherein the body part 17 and the sleeving part 13 are of T-shaped structures. The body part 17 of the pressure equalizing sealing compacting sleeve 8 is attached to one side face of the core hoop 9, and the other side face of the core hoop 9 is attached to the side face of the pressure equalizing wire protecting sleeve 6. With the structure, the body part 17 and the sleeving part 13 of the pressure equalizing sealing compacting sleeve 8 are integrally manufactured and formed.
One end of the ultra-high voltage cable 2 is provided with a sealing terminal 1. With the structure, the wire core of the ultra-high voltage cable 2 is welded by the sealing terminal 1, so that no leakage is ensured, and the processing and the assembly are convenient.
When the oil immersed type ultra-high voltage cable sealing pressure equalizing structure is manufactured, firstly, a pressure equalizing wire protecting sleeve 6 is arranged in a flange 4, then the pressure equalizing wire protecting sleeve 6 is arranged on an assembly formed by the flange 4 and sleeved on an ultra-high voltage cable 2, then the ultra-high voltage cable 2 is stripped by a certain length, in order to remove a sheath section 12, the process needs to ensure that an insulating layer of the ultra-high voltage cable 2 cannot be scratched and damaged, a shielding layer is stripped by a fixed length and then sheared off, one end of a stress tube 10 is sharpened and then sheared by a certain length and is inserted between the shielding layer and the insulating layer of the ultra-high voltage cable 2, the residual stress tube 10 is sleeved on the sheath of the ultra-high voltage cable 2, a heat baking gun is used for heat shrinkage, then a copper belt 11 is wound on a part of the shielding layer with the sheath removed, then the pressure equalizing wire sleeve 9 is pressed against the copper belt 11 and locked by a fastener, then the pressure equalizing sealing pressing sleeve 8, a sealing element 7 and a shielding body 3 are sequentially assembled on the ultra-high voltage cable 2, the assembly formed by the wire protecting sleeve 6 and the flange 4 and the shielding body 3 are assembled together, and then the pressure equalizing wire protecting wire sleeve is fastened by the cutting 5, and the pressure equalizing wire protecting wire sleeve 6 and the flange 4 are tightly cut, and the pressure equalizing wire terminal is tightly fixed according to the pressure equalizing wire terminal, and the pressure equalizing wire terminal is required to be sealed, and the pressure equalizing wire terminal is sealed, and has the electrical property and high pressure equalizing wire terminal sealing performance. And finally, cleaning and detecting the pressure resistance.
The oil-immersed ultrahigh voltage cable sealing and equalizing structure aims at the self requirement of the oil-immersed ultrahigh voltage cable sealing and equalizing structure, firstly, the oil-immersed ultrahigh voltage cable sealing structure meets the requirements of reliability and is convenient to assemble; secondly, the oil immersed type ultrahigh voltage cable voltage equalizing structure reliably realizes electric field uniformity. In order to solve the problems of reliability and convenience in assembly of the oil immersed type ultrahigh voltage cable sealing structure, a sealing piece with proper materials and moderate hardness is selected, the structure is reasonably sealed, an insulating layer of the ultrahigh voltage cable 2 is hooped, the insulating layer is guaranteed not to deform and uniformly bear force, and a wire core of the ultrahigh voltage cable 2 is welded by using a sealing terminal 1, so that no leakage is guaranteed, and the processing and the assembly are facilitated; the problem that the electric field is even is reliably realized to the oil-immersed ultrahigh voltage cable voltage-sharing structure is mainly through the selection of raw and other materials, and the processing mode is selected, and structural design realizes, and the wiring end is equipped with horn mouth form's voltage-sharing shield 3, and the fixed cable adopts core hoop 9 structure, is equipped with stress tube 10 in addition, and the protection insulating layer atress is even, and the terminal of being qualified for next round of competitions is equipped with no edge voltage-sharing protection sleeve 6, is favorable to even electric field.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the specific implementation of the utility model is not limited by the foregoing, but rather is within the scope of the utility model as long as various modifications are made by the method concept and technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without modification.
Claims (9)
1. The utility model provides an oily formula superhigh pressure cable seals pressure equalizing structure which characterized in that: the pressure equalizing protection wire sleeve (6) is sleeved outside the ultra-high voltage cable (2), the flange (4) is sleeved outside the pressure equalizing protection wire sleeve (6), one end of the stress tube (10) is inserted between the shielding layer and the insulating layer of the crust removing section (12) of the ultra-high voltage cable (2), the pressure equalizing copper strip (11) is arranged outside the stress tube (10), the core hoop (9) is arranged outside the pressure equalizing copper strip (11), the pressure equalizing sealing pressing sleeve (8) is sleeved outside the ultra-high voltage cable (2) on the side face of the core hoop (9), and the pressure equalizing shielding body (3) is sleeved outside the ultra-high voltage cable (2).
2. The oil immersed ultrahigh voltage cable seal pressure equalizing structure according to claim 1, wherein: the pressure equalizing sealing compaction sleeve (8) is of a flange-shaped structure, and a sleeving part (13) of the pressure equalizing sealing compaction sleeve (8) extends into the pressure equalizing shielding body (3).
3. The oil immersed ultra-high voltage cable seal pressure equalizing structure according to claim 2, wherein: a sealing piece (7) is arranged between the front end of a sleeving part (13) of the pressure equalizing sealing compaction sleeve (8) and a groove body (14) of the pressure equalizing shielding body (3).
4. The oil-immersed ultrahigh voltage cable seal pressure equalizing structure according to claim 1 or 2, wherein: the pressure equalizing shielding body (3) is connected with the flange (4) through screws (5).
5. The oil immersed ultra-high voltage cable seal pressure equalizing structure according to claim 2, wherein: the pressure equalizing wire protecting sleeve (6) is provided with a wire protecting sleeve boss (15) extending outwards, and the flange (4) is provided with a flange boss (16) extending inwards.
6. The oil immersed ultra-high voltage cable seal pressure equalizing structure according to claim 2, wherein: when the flange (4) is sleeved outside the pressure equalizing wire protecting sleeve (6), the wire protecting sleeve boss (15) is of a structure which can be axially clamped and connected with the flange boss (16).
7. The oil immersed ultra-high voltage cable seal pressure equalizing structure according to claim 2, wherein: the pressure equalizing sealing compacting sleeve (8) comprises a body part (17) and a sleeving part (13), wherein the body part (17) and the sleeving part (13) are of T-shaped structures.
8. The oil immersed ultra-high voltage cable seal pressure equalizing structure according to claim 7, wherein: the body part (17) of the pressure equalizing sealing compaction sleeve (8) is attached to one side face of the core hoop (9), and the other side face of the core hoop (9) is attached to the side face of the pressure equalizing protection wire sleeve (6).
9. The oil-immersed ultrahigh voltage cable seal pressure equalizing structure according to claim 1 or 2, wherein: one end of the ultra-high voltage cable (2) is provided with a sealing terminal (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322601237.2U CN220985308U (en) | 2023-09-25 | 2023-09-25 | Sealed voltage-sharing structure of oil-immersed ultrahigh voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322601237.2U CN220985308U (en) | 2023-09-25 | 2023-09-25 | Sealed voltage-sharing structure of oil-immersed ultrahigh voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220985308U true CN220985308U (en) | 2024-05-17 |
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ID=91055358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322601237.2U Active CN220985308U (en) | 2023-09-25 | 2023-09-25 | Sealed voltage-sharing structure of oil-immersed ultrahigh voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220985308U (en) |
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2023
- 2023-09-25 CN CN202322601237.2U patent/CN220985308U/en active Active
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