CN208938722U - A kind of used in nuclear power station multi wall heat-shrink tube - Google Patents
A kind of used in nuclear power station multi wall heat-shrink tube Download PDFInfo
- Publication number
- CN208938722U CN208938722U CN201820932033.3U CN201820932033U CN208938722U CN 208938722 U CN208938722 U CN 208938722U CN 201820932033 U CN201820932033 U CN 201820932033U CN 208938722 U CN208938722 U CN 208938722U
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- China
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- nuclear power
- power station
- insulating layer
- shrink tube
- wall heat
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Abstract
The utility model belongs to multi-walled pipes technical field, it is related to a kind of used in nuclear power station multi wall heat-shrink tube, including the low-smoke bittern-free highly fire-proof insulating layer (1) as outer layer and the Halogen insulating layer (2) being located on the inside of the low-smoke bittern-free highly fire-proof insulating layer (1).Using used in nuclear power station multi wall heat-shrink tube described in the utility model, have and used 60 years under the conditions of meeting 90 DEG C, still has the advantages that good service performance after being no less than 1500kGy by irradiation intergal dose.Reduce the work hidden danger because of the nuclear power station that used in nuclear power station pyrocondensation tube lifetime is short or performance decline is caused simultaneously, ensure that the operation steady in a long-term of nuclear power station, reduce maintenance cost.
Description
Technical field
The utility model belongs to multi-walled pipes technical field, and in particular to a kind of used in nuclear power station multi wall heat-shrink tube.
Background technique
In nuclear power field, multi-walled pipes are a kind of important tubing, and the sealed insulation for being mainly used for the wire and cable of nuclear power station is protected
Shield, and the multi-walled pipes many places in nuclear power station are in high temperature+height radiation working environment.And multi-walled pipes are required in this way
Working environment in stable use for a long time, this is extremely important for the even running of nuclear power station.Currently, common multi-walled pipes are generally not
Be able to satisfy the performance requirement at nuclear power end, requirement in 60 years used under the conditions of not especially being able to satisfy 90 DEG C, can not meet by
It is no less than after 1500kGy still to irradiation intergal dose with the requirement of good service performance.These are all the length of nuclear power station
Hidden danger has been buried in phase stable operation.
Utility model content
In view of the deficiencies in the prior art, the purpose of the utility model is to provide a kind of multi-walled pipes.The multi-walled pipes energy
Enough meet the requirement run steadily in the long term under the high temperature of nuclear power station, high radiation environment.
To achieve the above objectives, the technical solution adopted in the utility model is: a kind of used in nuclear power station multi wall heat-shrink tube,
In, including the low-smoke bittern-free highly fire-proof insulating layer as outer layer and the Halogen on the inside of the low-smoke bittern-free highly fire-proof insulating layer
Insulating layer.
Further, the material of the low-smoke bittern-free highly fire-proof insulating layer is halogen-free anti-flaming polyolefin.
Further, the thickness of the low-smoke bittern-free highly fire-proof insulating layer is 0.1-6.0mm.
Further, the material of the Halogen insulating layer is polyolefin material.
Further, the thickness of the Halogen insulating layer is 0.1-2.0mm.
Further, the used in nuclear power station heat-shrink tube further includes hot melt adhesive layer, and the hot melt adhesive layer is located at Halogen insulation
Layer inside.
Further, the material of the hot melt adhesive layer is ethylene-vinyl acetate copolymer.
Further, the thickness of the hot melt adhesive layer is 0.1-2.0mm.
The beneficial effects of the utility model have the following:
1. low-smoke bittern-free highly fire-proof insulating layer uses 60 years under the conditions of meeting 90 DEG C, it is no less than by irradiation intergal dose
Still there is good service performance after 1500kGy；
2. Halogen insulating layer uses 60 years under the conditions of meeting 90 DEG C, after being no less than 1500kGy by irradiation intergal dose
Still there is good service performance；
3. hot melt adhesive layer 3 makes performance of the used in nuclear power station heat-shrink tube with good sealed damp-proof；
4. reducing the work hidden danger because of the nuclear power station that used in nuclear power station pyrocondensation tube lifetime is short or performance decline is caused, protect
The operation steady in a long-term for having demonstrate,proved nuclear power station reduces maintenance cost (replacement can be exempted from the lifetime of nuclear power station).
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of used in nuclear power station multi wall heat-shrink tube described in specific embodiment of the present invention；
Fig. 2 is a kind of used in nuclear power station multi wall pyrocondensation that hot melt adhesive layer is equipped with described in specific embodiment of the present invention
The schematic diagram of pipe；
In figure: 1- low-smoke bittern-free highly fire-proof insulating layer, 2- Halogen insulating layer, 3- hot melt adhesive layer.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of used in nuclear power station multi wall heat-shrink tube, is sided configuration, including low-smoke bittern-free highly fire-proof insulating layer 1
With Halogen insulating layer 2, wherein low-smoke bittern-free highly fire-proof insulating layer 1 be used as outer layer, Halogen insulating layer 2 as internal layer be located at low cigarette without
1 inside of halogen high fire-retardance insulating layer.
The material of low-smoke bittern-free highly fire-proof insulating layer 1 is halogen-free anti-flaming polyolefin.
The thickness of low-smoke bittern-free highly fire-proof insulating layer 1 is 0.1-6.0mm.
The material of Halogen insulating layer 2 is polyolefin material.
The thickness of Halogen insulating layer 2 is 0.1-2.0mm.
As shown in Fig. 2, the utility model also provides another used in nuclear power station heat-shrink tube, it is in above-mentioned used in nuclear power station pyrocondensation
Increase hot melt adhesive layer 3 on the basis of the structure of pipe, hot melt adhesive layer 3 is located at 2 inside of Halogen insulating layer.Hot melt adhesive layer 3 keeps Halogen exhausted
2 inner wall of edge layer is in sealing state, has completely cut off the contact of Halogen insulating layer 2 with gas-liquid in pipeline.
The material of hot melt adhesive layer 3 is ethylene-vinyl acetate copolymer.
The thickness of hot melt adhesive layer 3 is 0.1-2.0mm.
Device described in the utility model is not limited to embodiment described in specific embodiment, those skilled in the art
Technical solution according to the present utility model obtains other embodiments, also belongs to the technological innovation scope of the utility model.
Claims (4)
1. a kind of used in nuclear power station multi wall heat-shrink tube, it is characterized in that: include as outer layer low-smoke bittern-free highly fire-proof insulating layer (1) and
Halogen insulating layer (2) on the inside of the low-smoke bittern-free highly fire-proof insulating layer (1)；
The material of the low-smoke bittern-free highly fire-proof insulating layer (1) is halogen-free anti-flaming polyolefin, the low-smoke bittern-free highly fire-proof insulation
The thickness of layer (1) is 0.1-6.0mm；
The material of the Halogen insulating layer (2) is polyolefin material；The thickness of the Halogen insulating layer (2) is 0.1-2.0mm.
2. used in nuclear power station multi wall heat-shrink tube as described in claim 1, it is characterized in that: the used in nuclear power station heat-shrink tube further includes heat
Melt layer (3), the hot melt adhesive layer (3) are located on the inside of the Halogen insulating layer (2).
3. used in nuclear power station multi wall heat-shrink tube as claimed in claim 2, it is characterized in that: the material of the hot melt adhesive layer (3) is second
Alkene acetate ethylene copolymer.
4. used in nuclear power station multi wall heat-shrink tube as claimed in claim 2, it is characterized in that: the thickness of the hot melt adhesive layer (3) is
0.1-2.0mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820932033.3U CN208938722U (en) | 2018-06-15 | 2018-06-15 | A kind of used in nuclear power station multi wall heat-shrink tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820932033.3U CN208938722U (en) | 2018-06-15 | 2018-06-15 | A kind of used in nuclear power station multi wall heat-shrink tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208938722U true CN208938722U (en) | 2019-06-04 |
Family
ID=66715205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820932033.3U Active CN208938722U (en) | 2018-06-15 | 2018-06-15 | A kind of used in nuclear power station multi wall heat-shrink tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208938722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889226A (en) * | 2022-03-07 | 2022-08-12 | 上海先锋辐照制品厂有限公司 | High flame-retardant high-temperature-resistant composite heat-shrinkable tube for electric automobile |
-
2018
- 2018-06-15 CN CN201820932033.3U patent/CN208938722U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889226A (en) * | 2022-03-07 | 2022-08-12 | 上海先锋辐照制品厂有限公司 | High flame-retardant high-temperature-resistant composite heat-shrinkable tube for electric automobile |
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