CN112927844A - Flexible fireproof mineral insulated cable and preparation method thereof - Google Patents
Flexible fireproof mineral insulated cable and preparation method thereof Download PDFInfo
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- CN112927844A CN112927844A CN202110164079.1A CN202110164079A CN112927844A CN 112927844 A CN112927844 A CN 112927844A CN 202110164079 A CN202110164079 A CN 202110164079A CN 112927844 A CN112927844 A CN 112927844A
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- protective shell
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- insulated cable
- protective
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 19
- 239000011707 mineral Substances 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 230000001681 protective effect Effects 0.000 claims abstract description 101
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims abstract description 10
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 9
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 12
- 239000000047 product Substances 0.000 claims description 12
- 239000011265 semifinished product Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000011179 visual inspection Methods 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims 2
- 238000009413 insulation Methods 0.000 claims 2
- 239000000945 filler Substances 0.000 abstract description 4
- 239000011810 insulating material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/221—Sheathing; Armouring; Screening; Applying other protective layers filling-up interstices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/34—Apparatus or processes specially adapted for manufacturing conductors or cables for marking conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1875—Multi-layer sheaths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a flexible fireproof mineral insulated cable and a preparation method thereof, wherein the exterior of a copper conductor is wrapped with an inner protective shell, polyvinyl chloride filler is filled in the inner protective shell, the exterior of the inner protective shell is provided with a fixed spiral groove, an elastic spiral line is clamped in the fixed spiral groove, and the exterior of the inner protective shell is wrapped with an isolation protective shell. Better protect inside copper conductor, prolong the life of cable.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a flexible fireproof mineral insulated cable and a preparation method thereof.
Background
The mineral insulated cable is a cable which uses a copper sheath to wrap a copper conductor core wire and uses magnesium oxide powder as an inorganic insulating material to isolate the conductor and the sheath, the outermost layer can select a proper protective sleeve according to requirements, and is generally called MICC or MI cable, and a similar cable uses metal to replace the copper sheath to wrap the core wire and the insulating material and is called a mineral insulated metal sheath cable;
but flexible fire prevention mineral insulated cable's inside comprises several electric wires usually, and fixed firm inadequately between the electric wire, rock easily in inside, and the inside stability of cable reduces, and outside parcel shell damages the back, and inside electric wire is very easy to buckle and damage.
Disclosure of Invention
The invention provides a flexible fireproof mineral insulated cable and a preparation method thereof, which can effectively solve the problems that the interior of the flexible fireproof mineral insulated cable is usually composed of a plurality of wires, the wires are not firmly fixed, the wires are easy to shake, the stability of the interior of the cable is reduced, and the inner wires are easy to bend and damage after an outer wrapping shell is damaged in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a flexible fireproof mineral insulated cable comprises a copper conductor, wherein an inner protective shell wraps the outside of the copper conductor, and polyvinyl chloride filler is filled in the inner protective shell;
fixed helicla flute has been seted up to the outside of interior protective housing, the inside joint of fixed helicla flute has elastic helix, the outside parcel of interior protective housing has isolated protective housing, isolated protective housing has inside seted up fixed cavity, protective housing position department installs the side arc pole in the correspondence of fixed cavity medial extremity, the inboard middle part position department of fixed cavity installs the middle part arc pole, the filling groove has all been seted up with middle part arc pole middle part to the side arc pole, the inside packing of filling groove has rubber insulation material, the side arc pole corresponds fixed helicla flute position department with the outer terminal surface of middle part arc pole and has seted up spacing helicla flute.
Preferably, the number of the inner protective shells is four, the inner protective shells are attached together, a placing gap is formed in the middle of each inner protective shell, and the middle arc rod is installed inside the placing gap.
Preferably, the side arc rod and the side end face of the middle arc rod are both arc-shaped structures, and the arc-shaped surfaces of the side arc rod and the middle arc rod are fixedly clamped with the outer part of the inner protective shell.
Preferably, the outside of isolated protective housing is provided with outer protective housing, it has the protection cavity to reserve between isolated protective housing and the outer protective housing, the inside even flexible bracing piece that splices of protection cavity, the symmetrical stopper that splices of isolated protective housing position department is corresponded to the flexible bracing piece side, the inside packing of protection cavity has insulating resin.
Preferably, the insulating resin is fixedly adhered inside the protective cavity through glue, and the width of the protective cavity is 2 mm.
Preferably, the gag lever post is the triangular prism shape structure, gag lever post side end face glues with isolated protective housing outside and glues glutinous, gag lever post another side end face glues with the elastic support pole side end face and glues glutinous, the remaining side end face and the insulating resin of gag lever post glue glutinous fixedly.
A preparation method of a flexible fireproof mineral insulated cable comprises the following steps:
s1, preparing a mold of the inner protective shell, embedding the copper wire into the mold, generating the inner protective shell, adding polyvinyl chloride filling material, and preparing a semi-finished product;
s2, clamping the surface of the semi-finished product with an elastic spiral line according to the field requirement, butting the surface with an isolation protective shell, and sleeving a side arc rod and a middle arc rod on the surface to manufacture a required product;
s3, filling rubber insulating materials on the surface of the required product, numbering and marking the product, and detecting the product;
and S4, after the detection is finished, packaging and placing the cable, and coating talcum powder on the surface of the cable for storage.
Preferably, in S1, the mold is simultaneously provided with a fixing spiral groove on the surface of the semi-finished product, and the visual inspection is manually performed.
Preferably, the inner protective case and the rubber insulator of S3 in S1 are colored, and the thickness of the cable and the diameter of the copper wire are registered.
Preferably, in S3, the heating efficiency, the conductivity, the overload rate and the loss ratio of the cable are recorded, and verified with the on-off standard required by the field, and after the detection is passed, the registration is performed, and the detection result is noted.
Preferably, in the cable packaging, one or more of a plastic bag, a snakeskin bag and an adhesive tape is packaged on the outer surface, talcum powder is coated on the surface, and after the cable is wound and packaged, the cable is sealed and stored in a plastic mode.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:
1. through setting up interior protective housing, polyvinyl chloride stopping, isolated protective housing, fixed cavity, the side arc pole, the middle part arc pole, packing groove and rubber insulation material, when using the cable, spacing joint through side arc pole and middle part arc pole between four interior protective housings of inside, tightly fix inside isolated protective housing, it is comparatively firm to make to fix between the electric wire of inside, be difficult for removing in isolated protective housing inside, thereby make isolated protective housing can not outwards strut by inside electric wire, better protect inside copper conductor, the life of extension cable.
2. Through setting up outer protective housing, the protection cavity, elastic support rod, gag lever post and insulating resin, after outer protective housing is damaged because of the live time overlength, because insulating resin, the supporting role of elastic support rod and gag lever post, make inside isolated protective housing of cable and inner protective housing can not spill easily, the damage can not twisted to the inner protective housing of inside yet, because elastic support rod, gag lever post and insulating resin will be isolated protective housing and outside completely, thereby can not make the isolated protective housing of inside erodeed by the rainwater, thereby make more durable of cable, give maintenance personal sufficient time, make the security of cable improve.
3. Through setting up fixed helicla flute, elastic helix and spacing helicla flute, the inside elastic support pole of protection cavity and the inside elastic helix of fixed helicla flute have increased the pliability of cable, make the cable can not break down easily.
4. The preparation method is simple, the preparation time can be shortened by distributing the cable for production, the cable can be produced in a better matching way according to the field requirements, the effect of mass production is achieved, the inner surface of the cable can be better protected by packaging, the possibility of surface damage of the cable is reduced, and meanwhile, the cable is more convenient and more convenient to store and transport in the later period.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the spring coil of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is a schematic view of the construction of the inner protective shell of the present invention;
FIG. 5 is a schematic structural view of a limiting spiral groove of the present invention;
FIG. 6 is a schematic view of the construction of the stop of the present invention;
FIG. 7 is a schematic structural diagram of steps of a manufacturing method of the present invention;
reference numbers in the figures: 1. a copper wire; 2. an inner protective shell; 3. polyvinyl chloride filler; 4. fixing the spiral groove; 5. an elastic helical line; 6. isolating the protective shell; 7. a fixed chamber; 8. a side arc bar; 9. a middle arc bar; 10. filling the groove; 11. a rubber insulating material; 12. a limiting spiral groove; 13. an outer protective shell; 14. a guard chamber; 15. an elastic support bar; 16. a limiting rod; 17. an insulating resin.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1:
as shown in fig. 1-6, the invention provides a technical scheme, a flexible fireproof mineral insulated cable and a preparation method thereof, comprising a copper conductor 1, wherein the exterior of the copper conductor 1 is wrapped by an inner protective shell 2, and polyvinyl chloride filler 3 is filled in the inner protective shell 2;
the outer part of the inner protective shell 2 is provided with a fixed spiral groove 4, the inner part of the fixed spiral groove 4 is clamped with an elastic spiral line 5, the outer part of the inner protective shell 2 is wrapped with an isolation protective shell 6, a fixed cavity 7 is arranged in the isolation protective shell 6, the inner side end of the fixed cavity 7 is provided with a side arc rod 8 corresponding to the position of the inner protective shell 2, the middle position of the inner side of the fixed cavity 7 is provided with a middle arc rod 9, the four inner protective shells 2 are jointed together, a placing gap is formed in the middle part, the middle arc rod 9 is arranged in the placing gap to facilitate the fixed installation of the middle arc rod 9, the side end faces of the side arc rod 8 and the middle arc rod 9 are arc structures, the arc faces of the side arc rod 8 and the middle arc rod 9 are clamped and fixed with the outer part of the inner protective shell 2, the side arc rod 8 and the middle arc rod 9, rubber insulation materials 11 are filled in the filling grooves 10, and limiting spiral grooves 12 are formed in the positions, corresponding to the fixed spiral grooves 4, of the outer end faces of the side arc rods 8 and the middle arc rod 9.
The outside of isolated protective housing 6 is provided with outer protective housing 13, it has protection cavity 14 to reserve between isolated protective housing 6 and the outer protective housing 13, the inside even butt joint of protection cavity 14 has elastic support rod 15, elastic support rod 15 side corresponds isolated protective housing 6 position department symmetrical joint and has gag lever post 16, the inside packing of protection cavity 14 has insulating resin 17, gag lever post 16 is the triangle column shape structure, 16 a side end face of gag lever post glues glutinous with isolated protective housing 6 outside, 16 another side end face of gag lever post glues glutinous with the 15 side end face of elastic support rod, the remaining side end face of gag lever post 16 glues fixedly with insulating resin 17, make things convenient for the stable connection of gag lever post 16, insulating resin 17 glues through glue is fixed to be glued inside protection cavity 14, the width of protection cavity 14 is 2mm, make things convenient for the packing of insulating resin 17 to fix.
Example 2:
as shown in fig. 7, the invention provides a technical solution, and a method for preparing a flexible fireproof mineral insulated cable, comprising the following steps:
s1, preparing a die of the inner protective shell 2, embedding the copper wire 1 into the die, generating the inner protective shell 2, adding polyvinyl chloride filling material 3, and then preparing a semi-finished product;
s2, clamping the surface of the semi-finished product with the elastic spiral line 5 according to the field requirement, butting the semi-finished product with the isolation protective shell 6, and sleeving the side arc rod 8 and the middle arc rod 9 on the surface to obtain the required product;
s3, filling the rubber insulation material 11 on the surface of the required product, numbering and marking the product, and detecting the product;
and S4, after the detection is finished, packaging and placing the cable, and coating talcum powder on the surface of the cable for storage.
Further, in S1, the mold is simultaneously provided with the fixing spiral groove 4 on the surface of the semi-finished product, and the visual inspection is manually performed.
Further, the inner protective cases 2 and the rubber insulators 11 of S3 in S1 were color-coded, and the thickness of the cable and the diameter of the copper wire 1 were registered.
Further, the heating efficiency, the electric conductivity, the overload rate and the loss ratio of the cable are recorded in S3, and are verified with the on-off standard required in the field, and after the detection is passed, the registration is performed, and the detection result is noted.
Further, in the cable packaging, one or more of a plastic bag, a snakeskin bag and an adhesive tape are packaged on the outer surface, talcum powder is coated on the surface, and after the cable is wound and packaged, the cable is sealed and stored.
The working principle and the using process of the invention are as follows: when the cable is used, the four inner protective cases 2 are tightly fixed inside the isolation protective case 6 through the limiting clamping connection of the side arc rods 8 and the middle arc rod 9, so that the wires inside are firmly fixed and are not easy to move inside the isolation protective case 6, the isolation protective case 6 cannot be outwards propped open by the wires inside, the service life of the isolation protective case 6 is longer, the copper wires inside are better protected, and the service life of the cable is prolonged;
the flexibility of the cable is increased by the elastic support rod 15 in the protective cavity 14 and the elastic spiral line 5 in the fixed spiral groove 4, so that the cable cannot be easily broken;
when outer protective housing 13 is damaged because of the live time overlength, because insulating resin 17, the supporting role of elastic support pole 15 and gag lever post 16, make the inside isolated protective housing 6 of cable and inner protective housing 2 can not spill easily, the damage can not twisted yet to inside inner protective housing 2, because elastic support pole 15, gag lever post 16 and insulating resin 17 will be isolated protective housing 6 and outside completely, thereby can not make the isolated protective housing 6 of inside erodeed by the rainwater, thereby make the more durable of cable, give the sufficient time of maintenance personal, make the security of cable improve.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A flexible fireproof mineral-insulated cable, comprising a copper conductor (1), characterized in that: the copper conductor (1) is wrapped by an inner protective shell (2), and polyvinyl chloride filling materials (3) are filled in the inner protective shell (2);
fixed helicla flute (4) have been seted up to the outside of interior protective housing (2), the inside joint of fixed helicla flute (4) has elastic helix (5), the outside parcel of interior protective housing (2) has isolated protective housing (6), isolated protective housing (6) inside fixed cavity (7) have been seted up, protective housing (2) position department installs side arc pole (8) in the correspondence of fixed cavity (7) medial extremity, middle part arc pole (9) are installed to fixed cavity (7) inboard middle part position department, filling groove (10) have all been seted up with middle part arc pole (9) middle part in side arc pole (8), filling groove (10) inside packing has rubber insulation material (11), spacing helicla flute (12) have been seted up to the outer terminal surface of side arc pole (8) and middle part arc pole (9) corresponding fixed helicla flute (4) position department.
2. A flexible fireproof mineral insulated cable according to claim 1, wherein there are four inner protective casings (2), four inner protective casings (2) are attached together, a placement gap is formed in the middle, and the middle arc rod (9) is installed inside the placement gap.
3. The flexible fireproof mineral insulated cable according to claim 1, wherein the side arc bars (8) and the side end faces of the middle arc bar (9) are both arc-shaped structures, and the arc-shaped surfaces of the side arc bars (8) and the middle arc bar (9) are fixed to the outer portion of the inner protective shell (2) in a clamping mode.
4. The flexible fireproof mineral insulated cable according to claim 1, wherein an outer protective shell (13) is arranged outside the insulating protective shell (6), a protective cavity (14) is reserved between the insulating protective shell (6) and the outer protective shell (13), an elastic support rod (15) is uniformly glued inside the protective cavity (14), a limiting rod (16) is symmetrically glued at the position of the side end of the elastic support rod (15) corresponding to the insulating protective shell (6), and insulating resin (17) is filled inside the protective cavity (14).
5. A flexible fire-retardant mineral-insulated cable according to claim 4, characterized in that the insulating resin (17) is fixedly glued inside the protective cavity (14) by means of glue, the width of the protective cavity (14) being 2 mm.
6. The flexible fireproof mineral insulated cable according to claim 4, wherein the limiting rod (16) is of a triangular prism structure, one side end face of the limiting rod (16) is adhered to the outer side of the insulation protection shell (6), the other side end face of the limiting rod (16) is adhered to the side end face of the elastic support rod (15), and the rest side end face of the limiting rod (16) is adhered and fixed to the insulating resin (17).
7. A preparation method of a flexible fireproof mineral insulated cable is characterized by comprising the following steps:
s1, preparing a die of the inner protective shell (2), embedding the copper wire (1) into the die, generating the inner protective shell (2), adding polyvinyl chloride filling material (3), and preparing a semi-finished product;
s2, clamping the surface of the semi-finished product with an elastic spiral line (5) according to the field requirement, butting the semi-finished product with an isolation protective shell (6), sleeving a side arc rod (8) and a middle arc rod (9) on the surface, and manufacturing a required product;
s3, filling rubber insulation materials (11) on the surfaces of the required products, numbering and marking the products, and detecting the products;
and S4, after the detection is finished, packaging and placing the cable, and coating talcum powder on the surface of the cable for storage.
8. The method for preparing the flexible fireproof mineral insulated cable according to claim 7, wherein the mold in S1 is provided with a fixing spiral groove (4) on the surface of the semi-finished product at the same time, and the visual inspection is manually performed.
9. A method for preparing a flexible fire-retardant mineral-insulated cable according to claim 7, characterized in that the inner protective shell (2) of S1 and the rubber insulation (11) of S3 are color-coded and registered for the thickness of the cable and the diameter of the copper conductor (1).
10. The method as claimed in claim 7, wherein the cable is subjected to recording of heating efficiency, conductivity, overload rate and loss ratio in S3, and is verified with on-off standards required in the field, and after passing the detection, the cable is registered and the detection result is noted;
during the cable packing, the surface is packed in one or more of plastic bag, snakeskin bag and sticky tape to scribble talcum powder on the surface, twine the packing back, the plastic envelope is preserved.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110164079.1A CN112927844B (en) | 2021-02-05 | 2021-02-05 | Flexible fireproof mineral insulated cable and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110164079.1A CN112927844B (en) | 2021-02-05 | 2021-02-05 | Flexible fireproof mineral insulated cable and preparation method thereof |
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| Publication Number | Publication Date |
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| CN112927844A true CN112927844A (en) | 2021-06-08 |
| CN112927844B CN112927844B (en) | 2022-06-21 |
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| CN103762021A (en) * | 2014-01-27 | 2014-04-30 | 威海市泓淋电子有限公司 | Bundled flame-retardant longitudinally-watertight deep-sea cable and manufacturing method thereof |
| RU174138U1 (en) * | 2017-02-16 | 2017-10-04 | Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации | SEALED FIRE RESISTANT CABLE |
| CN207268943U (en) * | 2017-07-31 | 2018-04-24 | 扬州迅达线缆有限公司 | A kind of composite cable |
| CN207731714U (en) * | 2017-12-28 | 2018-08-14 | 中东线缆制造有限责任公司 | A kind of power cable that tension is antitorque |
| CN208489008U (en) * | 2018-06-12 | 2019-02-12 | 广西万翔电线电缆有限公司 | One kind resists cold freeze proof durable cable |
| CN208737902U (en) * | 2018-07-11 | 2019-04-12 | 沈阳北方塑力电缆制造有限公司 | A kind of flexible mineral insulation fireproof cable that isolation is good |
| CN209045187U (en) * | 2018-11-16 | 2019-06-28 | 安徽环宇电缆集团有限公司 | A kind of fire-type protective metal shell flexible inorganic mineral insulation control cable |
| CN210182093U (en) * | 2019-07-17 | 2020-03-24 | 刘金娥 | Magnesium oxide mineral insulated cable |
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|---|---|
| CN112927844B (en) | 2022-06-21 |
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Denomination of invention: A flexible fireproof mineral insulated cable and its preparation method Effective date of registration: 20221019 Granted publication date: 20220621 Pledgee: Postal Savings Bank of China Limited Linyi Branch Pledgor: SHANDONG ZHONGMAI CABLE Co.,Ltd. Registration number: Y2022980018846 |
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Date of cancellation: 20231226 Granted publication date: 20220621 Pledgee: Postal Savings Bank of China Limited Linyi Branch Pledgor: SHANDONG ZHONGMAI CABLE Co.,Ltd. Registration number: Y2022980018846 |
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Denomination of invention: A flexible fire-resistant mineral insulated cable and its preparation method Granted publication date: 20220621 Pledgee: Linyi Lanshan District Branch of China Postal Savings Bank Co.,Ltd. Pledgor: SHANDONG ZHONGMAI CABLE Co.,Ltd. Registration number: Y2024980005060 |
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