CN221283375U - Novel dampproofing MI heating cable - Google Patents
Novel dampproofing MI heating cable Download PDFInfo
- Publication number
- CN221283375U CN221283375U CN202323200889.1U CN202323200889U CN221283375U CN 221283375 U CN221283375 U CN 221283375U CN 202323200889 U CN202323200889 U CN 202323200889U CN 221283375 U CN221283375 U CN 221283375U
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- CN
- China
- Prior art keywords
- heating cable
- moisture resistant
- metal sheath
- sheath
- metal
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 40
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 10
- 239000011707 mineral Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 claims 1
- 229920000052 poly(p-xylylene) Polymers 0.000 claims 1
- 239000004812 Fluorinated ethylene propylene Substances 0.000 description 4
- 229920009441 perflouroethylene propylene Polymers 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Abstract
The utility model discloses a novel moisture-proof MI heating cable in the field of heating cables, which comprises a metal sheath and two mutually parallel conductors, wherein the cross section of the metal sheath is of a rectangular structure, the two conductors are symmetrically distributed in the metal sheath, a mineral insulation filling layer and a moisture-proof layer are sequentially arranged between the conductors and the metal sheath from inside to outside, a non-metal outer sheath with round holes distributed on the surface is arranged outside the metal sheath, and a moisture-proof coating is further arranged outside the non-metal outer sheath. The utility model has the advantages of water resistance, moisture resistance, convenient laying and the like.
Description
Technical Field
The utility model belongs to the technical field of heating cables, and particularly relates to a novel dampproof MI heating cable.
Background
The MI heating cable is manufactured by adopting a single or a plurality of alloy heating wires as a heating source, adopting high-purity, high-temperature and electrofusion crystallized magnesium oxide as a heat-conducting insulator, adopting seamless continuous stainless steel or copper tubes as a sheath and adopting a special production process. PE or a low smoke halogen-free jacket can be additionally arranged in a place with strong corrosion. In the petrochemical industry, MI heating cables are needed for heating containers, heat preservation of process pipelines, heat preservation of storage tanks, paraffin removal and blockage removal of crude oil pipelines, and the like.
In the prior art, a mode of surrounding an MI heating cable is often adopted to heat and insulate pipelines and a cylinder body. The defects are that: when the device normally operates, the heating cable normally works, after a period of time is stopped, moisture can infiltrate into the cable due to lower ambient temperature, so that the filler in the cable is damped and the insulation of the filler is reduced, when the heating cable is finally caused to be put into operation again, the situation of grounding power-skip occurs immediately after the heating cable is electrified, the production progress is influenced, and the replacement cost of the whole cable is higher.
Disclosure of utility model
The utility model aims to provide a novel dampproof MI heating cable, which has the advantages of water resistance, dampproof property, convenient laying and the like.
The purpose of the utility model is realized in the following way: the utility model provides a novel dampproofing MI heating cable, includes metal sheath and two conductors that are parallel to each other, metal sheath's cross section is rectangular structure, two conductor symmetric distribution has set gradually mineral insulation filling layer and water blocking layer from inside to outside in the metal sheath between conductor and the metal sheath, the metal sheath is provided with the non-metal oversheath that the surface covered the round hole outward, non-metal oversheath still is equipped with dampproofing coating outward.
Compared with the prior art, the utility model has the beneficial effects that: the cross section of the heating cable is designed into a rectangle, so that the contact area between the heating cable and a pipeline and the contact area between the heating cable and a cylinder body and the heat supply area of a conductor can be increased, and the effective heat utilization rate is improved; moisture can be prevented from entering the heating cable by arranging a water-resistant layer outside the mineral insulation filling layer and arranging a dampproof coating outside the nonmetallic outer sheath, so that the service life of the heating cable is prolonged; by arranging the round holes on the outer surface of the nonmetallic outer sheath, the bonding strength of the dampproof coating and the nonmetallic outer sheath can be improved, so that the coating is not easy to fall off in the use process.
As a further improvement of the utility model, the conductor is formed by twisting a plurality of copper wires with tin plated surfaces.
As a further improvement of the utility model, the conductor is formed by twisting a plurality of copper wires with nickel plated on the surfaces.
As a further improvement of the utility model, the metal sheath is made of stainless steel.
As a further improvement of the utility model, the metal sheath is made of 825 alloy material.
As a further improvement of the utility model, the water-blocking layer is made by winding water-blocking yarns or water-blocking ropes.
As a further improvement of the present utility model, the nonmetallic outer jacket is made of FEP-fluorinated ethylene propylene.
As a further development of the utility model, the thickness of the moisture-proof coating is D,0.5mm < D < 0.8mm.
As a further improvement of the present utility model, the mineral insulating filling layer is a magnesium oxide insulating filling layer.
Drawings
Fig. 1 is a cross-sectional view of the present utility model.
Fig. 2 is a cross-sectional view of a nonmetallic outer sheath of the present utility model.
Wherein, 1 metal sheath, 2 conductors, 3 mineral insulation filling layers, 4 water-resistant layers, 5 nonmetallic outer sheaths and 6 dampproof coatings.
Detailed Description
Example 1
As shown in figure 1, the novel moistureproof MI heating cable comprises a metal sheath 1 and two parallel conductors 2, wherein the metal sheath 1 is made of stainless steel, and can meet the requirements of high temperature conditions and high heating power; the cross section of the metal sheath 1 is of a rectangular structure, two mutually parallel conductors 2 are symmetrically distributed in the metal sheath 1, the conductors 2 are formed by twisting a plurality of copper wires with tin plated on the surfaces, the cable can be ensured to have smaller bending radius and reliable strength when laid, and the tin plated copper wires have better high-temperature oxidation resistance; a mineral insulation filling layer 3 and a water-resistant layer 4 are sequentially arranged between the conductor 2 and the metal sheath 1 from inside to outside, and the mineral insulation filling layer 3 is a magnesium oxide insulation filling layer and has the characteristics of quick heat conduction and high insulation; the waterproof layer 4 is made of waterproof yarns in a winding way, so that the waterproof layer is easy to process and has high waterproof coverage rate; the nonmetal outer sheath 5 with round holes distributed on the surface is arranged outside the metal sheath 1, the nonmetal outer sheath 5 is produced by adopting an FEP (fluorinated ethylene propylene) continuous extrusion mode, the volume resistivity of FEP is very high, the FEP is less affected by temperature, and the FEP is not easily affected by water and moisture; the nonmetallic outer sheath 5 is also provided with a dampproof coating 6, and the thickness of the dampproof coating 6 is D=0.6mm.
Example two
The present embodiment is different from the first embodiment in that: the metal sheath 1 is made of 825 alloy material, and the highest bearing temperature of the manufactured heating cable can reach 800 ℃; the conductor 2 is formed by twisting a plurality of copper wires with nickel plated on the surface, and compared with the copper wires commonly used in the prior art, the conductor has stable performance and stronger tensile resistance, and can avoid fracture caused by twisting in use; the water-blocking layer 4 is made by winding water-blocking ropes; the thickness of the moisture-proof coating 6 is d=0.7 mm.
When the utility model is used, a single wiring or a plurality of wires can be closely and parallelly wired. The utility model has the advantages that: the cross section of the heating cable is designed into a rectangle, so that the contact area between the heating cable and a pipeline and the contact area between the heating cable and a cylinder and the heating area of the conductor 2 can be increased, and the effective heat utilization rate is improved; moisture can be prevented from entering the inside of the heating cable by arranging the water blocking layer 4 outside the mineral insulation filling layer 3 and the dampproof coating 6 outside the nonmetallic outer sheath 5, so that the service life of the heating cable is prolonged.
The utility model is not limited to the above embodiments, and based on the technical solution disclosed in the utility model, a person skilled in the art may make some substitutions and modifications to some technical features thereof without creative effort according to the technical content disclosed, and all the substitutions and modifications are within the protection scope of the utility model.
Claims (9)
1. The utility model provides a novel dampproofing MI heating cable, its characterized in that, includes metal sheath and two conductors that are parallel to each other, metal sheath's cross section is rectangular structure, two conductor symmetric distribution is in metal sheath, from inside to outside set gradually mineral insulation filling layer and water-blocking layer between conductor and the metal sheath, the metal sheath is provided with the non-metal oversheath that the surface covered with the round hole outward, still be equipped with dampproofing coating outward the non-metal oversheath.
2. The novel moisture resistant MI heating cable of claim 1, wherein said conductor is stranded from a plurality of surface tinned copper wires.
3. The novel moisture resistant MI heating cable of claim 1, wherein said conductor is stranded from a plurality of surface nickel plated copper wires.
4. A novel moisture resistant MI heating cable according to claim 1, wherein said metallic sheath is made of stainless steel.
5. The novel moisture resistant MI heating cable of claim 1, wherein said metal sheath is comprised of 825 alloy material.
6. A novel moisture resistant MI heating cable according to claim 1 wherein said water barrier is formed by winding water blocking yarns or ropes.
7. A novel moisture resistant MI heating cable according to claim 1, wherein said non-metallic outer sheath is made of FEP-parylene.
8. A novel moisture resistant MI heating cable according to claim 1 wherein said moisture resistant coating has a thickness D of 0.5mm < D < 0.8mm.
9. A novel moisture resistant MI heating cable as claimed in any one of claims 1 to 8 wherein said mineral insulating fill is a magnesium oxide insulating fill.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221283375U true CN221283375U (en) | 2024-07-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |