CN111048268A - A heat-shrinkable insulating accessory for the intermediate connection part of an insulating tube busbar - Google Patents
A heat-shrinkable insulating accessory for the intermediate connection part of an insulating tube busbar Download PDFInfo
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- CN111048268A CN111048268A CN201910895896.7A CN201910895896A CN111048268A CN 111048268 A CN111048268 A CN 111048268A CN 201910895896 A CN201910895896 A CN 201910895896A CN 111048268 A CN111048268 A CN 111048268A
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- Prior art keywords
- layer
- insulating
- heat
- shrinkable
- tube
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- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 129
- 238000001125 extrusion Methods 0.000 claims description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 239000002356 single layer Substances 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 6
- 238000004132 cross linking Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/58—Tubes, sleeves, beads, or bobbins through which the conductor passes
- H01B17/583—Grommets; Bushings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/60—Composite insulating bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/64—Insulating bodies with conductive admixtures, inserts or layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/70—Insulation of connections
- H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
Landscapes
- Cable Accessories (AREA)
Abstract
本发明公开了一种绝缘管母线中间连接部位热缩绝缘附件，它包括热缩管，所述的热缩管包含外半导电层、中间绝缘层和内半导电层，外半导电层、中间绝缘层和内半导电层三层共挤为一体，所述的外半导电层厚度大于0.2mm，所述的中间绝缘层的厚度为1‑10mm，所述的内半导电层的厚度大于0.2mm；所述的热缩管与其内部中间接头及母线紧密贴合，热缩管外部还依次设置有地线层和护套层。本发明方便现场制作绝缘管母线的中间连接部位的绝缘连接，不受现场环境和铺设空间影响，且现场制作绝缘管母线的中间连接部位的绝缘连接局部放电低，防潮防尘，综合绝缘质量高。
The invention discloses a heat-shrinkable insulation accessory for the intermediate connection part of an insulating tube busbar, which comprises a heat-shrinkable tube. The insulating layer and the inner semi-conductive layer are co-extruded into a whole, the thickness of the outer semi-conductive layer is greater than 0.2 mm, the thickness of the intermediate insulating layer is 1-10 mm, and the thickness of the inner semi-conductive layer is greater than 0.2 mm mm; the heat-shrinkable tube is closely attached to its internal intermediate joint and the bus bar, and a ground wire layer and a sheath layer are arranged on the outside of the heat-shrinkable tube in sequence. The invention facilitates the insulation connection of the intermediate connection part of the on-site production of the insulating tube busbar, is not affected by the on-site environment and the laying space, and has low partial discharge, moisture-proof and dust-proof, and high comprehensive insulation quality of the insulation connection of the intermediate connection part of the on-site production of the insulation tube busbar. .
Description
Technical Field
The invention relates to a thermal shrinkage insulating accessory, in particular to a thermal shrinkage insulating accessory at the middle connecting part of an insulating tube bus.
Background
The method comprises the steps of firstly, adopting field wrapping insulating films or insulating tapes for manufacturing insulating connection at the middle connection part of a known insulating tube bus, wherein the insulating connection quality is restricted due to field (wind dust, moisture) manual operation (high-altitude erection and cable trench laying) factors, and the partial discharge seriously exceeds the standard; secondly, a prefabricated insulating shielding cylinder is adopted, so that the moisture-proof sealing is difficult, the water accumulation is easy after a long time, the appearance volume is large, and the mass is severely restricted by the installation environment space of the insulating tube bus; the insulating tube bus system is formed by connecting a plurality of sections (the length of each section is about 6M generally) of insulating tube buses, a plurality of intermediate joints are arranged, and the intermediate insulating connection manufactured by the method has many potential safety hazards and is not beneficial to the safe operation of the insulating tube bus system.
In conclusion, the invention designs the thermal shrinkage insulation accessory at the middle connecting part of the insulated tube bus and the application thereof.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the thermal shrinkage insulation accessory for the middle connecting part of the insulated tubular bus, which is convenient for manufacturing the insulation connection of the middle connecting part of the insulated tubular bus on site, is not influenced by site environment and laying space, has low partial discharge of the insulation connection of the middle connecting part of the insulated tubular bus manufactured on site, is moisture-proof and dust-proof, and has high comprehensive insulation quality.
In order to achieve the purpose, the invention is realized by the following technical scheme: a thermal shrinkage insulating accessory at the middle connecting part of an insulating tube bus comprises a thermal shrinkage tube, wherein the thermal shrinkage tube comprises an outer semi-conducting layer, a middle insulating layer and an inner semi-conducting layer, the outer semi-conducting layer, the middle insulating layer and the inner semi-conducting layer are co-extruded into a whole, the thickness of the outer semi-conducting layer is larger than 0.2mm, the thickness of the middle insulating layer is 1-10mm, and the thickness of the inner semi-conducting layer is larger than 0.2 mm; the heat shrinkable tube is tightly attached to the middle joint and the bus in the heat shrinkable tube, and a ground wire layer and a sheath layer are sequentially arranged outside the heat shrinkable tube.
Preferably, the heat shrinkable tube has a composite structure of a single layer of heat shrinkable tube or a plurality of layers of heat shrinkable tubes stacked according to the voltage class. Namely: the single-layer heat shrinkable tube refers to a three-layer co-extrusion integrated heat shrinkable tube, and the multi-layer heat shrinkable tube refers to superposition of a plurality of three-layer co-extrusion integrated heat shrinkable tubes.
Preferably, the outer semi-conductive layer is sleeved with a copper woven mesh or other shielding tapes (films), the length of the copper woven mesh or other shielding tapes is greater than that of the outer semi-conductive layer of the three-layer co-extrusion heat-shrinkable tube, and the copper woven mesh is lapped with the grounding shields of the insulating tube buses at two ends so that the grounding shields of the insulating tube buses are communicated in a whole phase manner; and then two layers of insulating sheaths are thermally contracted outside the copper mesh grid, and dust-proof and moisture-proof sealing treatment is carried out on two ends of the insulating sheaths.
Preferably, the processing and manufacturing process flow of the thermal shrinkage insulation accessory at the middle connecting part of the insulated pipe bus comprises the following steps: three-layer co-extrusion → cut to length → irradiation cross-linking → sizing and finishing the inner shielding layer → expansion.
Preferably, the processing and manufacturing process flow of the thermal shrinkage insulation accessory at the middle connecting part of the insulated pipe bus comprises the following steps: three-layer co-extrusion → fixed length cutting → fixed length fine machining of the inner semi-conductive layer → irradiation crosslinking → expansion.
The invention has the beneficial effects that: the invention has reasonable structural design and simple manufacturing process, is convenient for the insulation connection of the middle connecting part of the insulation tube bus manufactured on site, is not influenced by site environment and laying space, has low insulation connection partial discharge of the middle connecting part of the insulation tube bus manufactured on site, is moisture-proof and dust-proof, and has high comprehensive insulation quality.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a 3.6kv three-layer co-extruded heat shrinkable tube of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic structural view of a 10kv three-layer co-extruded heat shrinkable tube of the present invention (two heat shrinkable tubes are stacked);
fig. 5 is a partially enlarged schematic view of fig. 4.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to 5, the following technical solutions are adopted in the present embodiment: a thermal shrinkage insulation accessory at the middle connection part of an insulating tube bus comprises a thermal shrinkage tube, wherein the thermal shrinkage tube comprises an outer semi-conducting layer 1, a middle insulating layer 2 and an inner semi-conducting layer 3, the outer semi-conducting layer 1, the middle insulating layer 2 and the inner semi-conducting layer 3 are co-extruded into a whole, the thickness of the outer semi-conducting layer 1 is larger than 0.2mm, the thickness of the middle insulating layer 2 is 1-10mm, and the thickness of the inner semi-conducting layer 3 is larger than 0.2 mm; the heat shrinkable tube is tightly attached to the middle joint 4 and the bus 5 inside the heat shrinkable tube, and a ground wire layer and a sheath layer are sequentially arranged outside the heat shrinkable tube.
It is noted that the heat shrinkable tube has a composite structure of a single layer of heat shrinkable tube or a stack of multiple layers of heat shrinkable tubes according to voltage class.
In addition, the processing and manufacturing process flow of the thermal shrinkage insulation accessory at the middle connecting part of the insulated tube bus is as follows: three-layer co-extrusion → cut to length → irradiation cross-linking → sizing and finishing the inner shielding layer → expansion. The other process flow of the invention is as follows: three-layer co-extrusion → fixed length cutting → fixed length fine machining of the inner semi-conductive layer → irradiation crosslinking → expansion.
The specific embodiment can meet the requirements of different voltage grades by single-layer or multi-layer compounding;
3.6 kV-one layer, wherein the thickness of the middle insulating layer of the three-layer co-extrusion heat-shrinkable tube is more than or equal to 3 mm;
10kV (including 6kV) -two layers, wherein the accumulated thickness of the middle insulating layers of the three-layer co-extrusion heat-shrinkable tube is more than or equal to 6 mm;
15 kV-three layers, wherein the accumulated thickness of the middle insulating layers of the three-layer co-extrusion heat shrinkable tubes is more than or equal to 8 mm;
20 kV-four layers, wherein the accumulated thickness of the middle insulating layers of the three-layer co-extrusion heat-shrinkable tube is more than or equal to 10 mm;
35 kV-five layers, wherein the accumulated thickness of the middle insulating layers of the three-layer co-extrusion heat-shrinkable tube is more than or equal to 15 mm;
according to the structure of the single-layer or multi-layer composite insulation connection of the specific embodiment, according to the voltage grade, a copper woven mesh or other shielding tapes (films) are sleeved on the outer semi-conducting layer 1 of the outer three-layer co-extrusion heat-shrinkable tube heat-shrinkable insulation accessory, the length of the copper woven mesh is greater than that of the outer semi-conducting layer 1 of the three-layer co-extrusion heat-shrinkable tube, and the copper woven mesh is lapped with the grounding shields of the insulated tube buses at two ends so that the grounding shields of the insulated tube buses are communicated; and then two layers of insulating sheaths are thermally contracted outside the copper mesh grid, and dust-proof and moisture-proof sealing treatment is carried out on two ends of the insulating sheaths.
In the insulating connection thermal shrinkage insulating accessory at the intermediate connection part of the insulating tubular bus according to the embodiment of the invention, the process length of each layer is manufactured according to the actual size of the intermediate connection hardware, that is, the right protection length of the invention is not limited to a specific numerical value.
Example 1: the single-layer or multi-layer composite insulation connection structure at the middle connection part of the insulated tubular bus of the embodiment has the following requirements on the specific size (from inside to outside) of the composite structure:
the length of the first layer is 500mm, the length of the outer semi-conducting layer 1 of the three-layer co-extrusion heat-shrinkable tube is equal to the length of the first layer by 500mm, the length of the middle insulating layer 2 of the three-layer co-extrusion heat-shrinkable tube is equal to the length of the first layer by 500mm, and the length of the inner semi-conducting layer 3 of the three-layer co-extrusion heat-;
the length of the second layer is 750mm, the length of the outer semi-conducting layer 1 of the three-layer co-extrusion heat-shrinkable tube is equal to the length of the first layer is 750mm, the length of the middle insulating layer 2 of the three-layer co-extrusion heat-shrinkable tube is equal to the length of the first layer is 750mm, and the length of the inner semi-conducting layer 3 of the three-layer co-extrusion heat-shrinkable;
the length of the third layer is 1000mm, the length of the outer semi-conducting layer 1 of the three-layer co-extrusion heat-shrinkable tube is equal to the length of the first layer is 1000mm, the length of the middle insulating layer 2 of the three-layer co-extrusion heat-shrinkable tube is equal to the length of the first layer is 1000mm, and the length of the inner semi-conducting layer 3 of the three-layer co-extrusion heat-;
the length of the fourth layer is 1250mm, the length of the outer semi-conducting layer 1 of the three-layer co-extrusion heat-shrinkable tube is 1250mm equal to that of the first layer, the length of the middle insulating layer 2 of the three-layer co-extrusion heat-shrinkable tube is 1250mm equal to that of the first layer, and the length of the inner semi-conducting layer 3 of the three-layer co-extrusion heat-shrinkable tube is 1000-;
the length of the fifth layer is 1500mm, the length of the outer semi-conducting layer 1 of the three-layer co-extrusion heat-shrinkable tube is equal to the length of the first layer which is 1500mm, the length of the middle insulating layer 2 of the three-layer co-extrusion heat-shrinkable tube is equal to the length of the first layer which is 1500mm, and the length of the inner semi-conducting layer 3 of the three-layer co-extrusion.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The thermal-shrinkable insulating accessory at the middle connecting part of the insulated pipe bus is characterized by comprising a thermal-shrinkable tube, wherein the thermal-shrinkable tube comprises an outer semi-conducting layer (1), a middle insulating layer (2) and an inner semi-conducting layer (3), the outer semi-conducting layer (1), the middle insulating layer (2) and the inner semi-conducting layer (3) are co-extruded into a whole, the thickness of the outer semi-conducting layer (1) is more than 0.2mm, the thickness of the middle insulating layer (2) is 1-10mm, and the thickness of the inner semi-conducting layer (3) is more than 0.2 mm; the heat-shrinkable tube is tightly attached to the middle joint (4) and the bus (5) inside the heat-shrinkable tube, and a ground wire layer and a sheath layer are sequentially arranged outside the heat-shrinkable tube.
2. The heat-shrinkable insulating accessory for the intermediate connecting part of the insulated tubular bus according to claim 1, wherein the heat-shrinkable tube has a composite structure of a single-layer heat-shrinkable tube or a plurality of layers of heat-shrinkable tubes stacked according to a voltage class.
3. The thermal-shrinkable insulating accessory for the intermediate connection part of the insulated tubular bus bar as claimed in claim 1, wherein the outer semi-conductive layer (1) is sleeved with a copper mesh grid or other shielding tapes and shielding films, the length of the copper mesh grid is greater than that of the three-layer co-extruded thermal-shrinkable outer semi-conductive layer (1), and the copper mesh grid is lapped with the grounding shields of the insulated tubular bus bars at two ends so that the grounding shields of the insulated tubular bus bars are in phase continuity; and then two layers of insulating sheaths are thermally contracted outside the copper mesh grid, and dust-proof and moisture-proof sealing treatment is carried out on two ends of the insulating sheaths.
4. The insulating tube bus intermediate connection part heat-shrinkable insulating accessory according to claim 1, characterized in that the processing and manufacturing process flow of the insulating tube bus intermediate connection part heat-shrinkable insulating accessory is as follows: three-layer co-extrusion → fixed length cutting → irradiation crosslinking → fixed length fine machining of the inner semi-conductive layer → expansion.
5. The insulating tube bus intermediate connection part heat-shrinkable insulating accessory according to claim 1, characterized in that the processing and manufacturing process flow of the insulating tube bus intermediate connection part heat-shrinkable insulating accessory is as follows: three-layer co-extrusion → fixed length cutting → fixed length fine machining of the inner semi-conductive layer → irradiation crosslinking → expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895896.7A CN111048268A (en) | 2019-09-21 | 2019-09-21 | A heat-shrinkable insulating accessory for the intermediate connection part of an insulating tube busbar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895896.7A CN111048268A (en) | 2019-09-21 | 2019-09-21 | A heat-shrinkable insulating accessory for the intermediate connection part of an insulating tube busbar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111048268A true CN111048268A (en) | 2020-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910895896.7A Pending CN111048268A (en) | 2019-09-21 | 2019-09-21 | A heat-shrinkable insulating accessory for the intermediate connection part of an insulating tube busbar |
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| CN (1) | CN111048268A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0079118A1 (en) * | 1981-11-09 | 1983-05-18 | Cable Technology Laboratories, Inc. | Electrical cable joint structure and method of manufacture |
| CN105931700A (en) * | 2016-04-28 | 2016-09-07 | 深圳市智豪特材科技有限公司 | Insulated tubular busbar having composite insulation layer and in voltage class of 1kV and below and preparation method thereof |
| CN206236440U (en) * | 2016-10-09 | 2017-06-09 | 深圳市智豪特材科技有限公司 | A kind of middle high-pressure insulating tube type busbar and apply its equipment |
| CN207319747U (en) * | 2017-09-16 | 2018-05-04 | 深圳市智豪特材科技有限公司 | A kind of 6-35kV pipe typed insulations bus structure |
| CN211045153U (en) * | 2019-09-21 | 2020-07-17 | 深圳市智豪特材科技有限公司 | Thermal shrinkage insulation accessory for middle connection part of insulated tube bus |
-
2019
- 2019-09-21 CN CN201910895896.7A patent/CN111048268A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0079118A1 (en) * | 1981-11-09 | 1983-05-18 | Cable Technology Laboratories, Inc. | Electrical cable joint structure and method of manufacture |
| CN105931700A (en) * | 2016-04-28 | 2016-09-07 | 深圳市智豪特材科技有限公司 | Insulated tubular busbar having composite insulation layer and in voltage class of 1kV and below and preparation method thereof |
| CN206236440U (en) * | 2016-10-09 | 2017-06-09 | 深圳市智豪特材科技有限公司 | A kind of middle high-pressure insulating tube type busbar and apply its equipment |
| CN207319747U (en) * | 2017-09-16 | 2018-05-04 | 深圳市智豪特材科技有限公司 | A kind of 6-35kV pipe typed insulations bus structure |
| CN211045153U (en) * | 2019-09-21 | 2020-07-17 | 深圳市智豪特材科技有限公司 | Thermal shrinkage insulation accessory for middle connection part of insulated tube bus |
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Application publication date: 20200421 |