CN211045153U - Thermal shrinkage insulation accessory for middle connection part of insulated tube bus - Google Patents
Thermal shrinkage insulation accessory for middle connection part of insulated tube bus Download PDFInfo
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- CN211045153U CN211045153U CN201921575215.0U CN201921575215U CN211045153U CN 211045153 U CN211045153 U CN 211045153U CN 201921575215 U CN201921575215 U CN 201921575215U CN 211045153 U CN211045153 U CN 211045153U
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- conducting layer
- shrinkable tube
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Abstract
The utility model discloses an insulating tube generating line intermediate junction position pyrocondensation insulating accessory, it includes the pyrocondensation pipe, the pyrocondensation pipe contain outer semi-conducting layer, intermediate insulation layer and interior semi-conducting layer, outer semi-conducting layer, intermediate insulation layer and interior semi-conducting layer three-layer are crowded as an organic whole altogether, outer semi-conducting layer thickness be greater than 0.2mm, intermediate insulation layer's thickness be 1-10mm, interior semi-conducting layer's thickness be greater 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. The utility model discloses the insulating connection at the intermediate junction position of convenient on-the-spot preparation insulating tube generating line does not receive site environment and lays the space influence, and the insulating connection partial discharge at the intermediate junction position of on-the-spot preparation insulating tube generating line is low, and is dampproofing dustproof, comprehensive insulation quality is high.
Description
Technical Field
The utility model relates to a pyrocondensation insulating accessory, concretely relates to insulating tube generating line intermediate junction position pyrocondensation insulating accessory.
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.
To sum up, the utility model designs an insulating tube generating line intermediate junction position pyrocondensation insulating accessories and application thereof.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a not enough to exist on the prior art, the utility model aims at providing an insulating tube generating line intermediate junction position pyrocondensation insulation accessories makes things convenient for the insulating connection at the intermediate junction position of on-the-spot preparation insulating tube generating line, does not receive site environment and lays the space influence, and the insulating connection partial discharge at the intermediate junction position of on-the-spot preparation insulating tube generating line is low, dampproofing dustproof, comprehensive insulation quality is high.
In order to achieve the above purpose, the present invention is realized by the following technical solution: 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 utility model has the advantages that: the utility model has the advantages of reasonable design, preparation simple process makes things convenient for the insulating connection at the intermediate junction position of on-the-spot preparation insulating tube generating line, does not receive site environment and lays the space influence, and the insulating connection partial discharge at the intermediate junction position of on-the-spot preparation insulating tube generating line is low, and dampproofing dustproof, comprehensive insulation quality is high.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments;
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-extrusion 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-extrusion 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, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following 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 utility model 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.
This embodiment's insulating pyrocondensation insulating accessories is connected in the insulation at the intermediate junction position of insulating tube generating line, according to every layer of technology length of actual intermediate junction gold utensil size preparation, promptly the utility model discloses right protection length is not restricted to certain 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 basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
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 a shielding tape and a shielding film, the length of the copper mesh grid or the shielding tape 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921575215.0U CN211045153U (en) | 2019-09-21 | 2019-09-21 | Thermal shrinkage insulation accessory for middle connection part of insulated tube bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921575215.0U CN211045153U (en) | 2019-09-21 | 2019-09-21 | Thermal shrinkage insulation accessory for middle connection part of insulated tube bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211045153U true CN211045153U (en) | 2020-07-17 |
Family
ID=71532424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921575215.0U Expired - Fee Related CN211045153U (en) | 2019-09-21 | 2019-09-21 | Thermal shrinkage insulation accessory for middle connection part of insulated tube bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211045153U (en) |
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2019
- 2019-09-21 CN CN201921575215.0U patent/CN211045153U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200717 Termination date: 20210921 |
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| CF01 | Termination of patent right due to non-payment of annual fee |