CN209625901U - A kind of mineral insulated cable - Google Patents

A kind of mineral insulated cable Download PDF

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Publication number
CN209625901U
CN209625901U CN201920625247.0U CN201920625247U CN209625901U CN 209625901 U CN209625901 U CN 209625901U CN 201920625247 U CN201920625247 U CN 201920625247U CN 209625901 U CN209625901 U CN 209625901U
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China
Prior art keywords
layer
metal shell
protective metal
copper wire
mineral insulated
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Active
Application number
CN201920625247.0U
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Chinese (zh)
Inventor
刘焕坪
万青山
姜志诚
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Hubei Nanyuan Cable Technology Co Ltd
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Hubei Nanyuan Cable Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

The utility model discloses a kind of mineral insulated cables, it is related to the technical field of cable and wire, including copper core conductor, inorganic insulation layer, inorfil filled layer, protective metal shell and the low smoke and zero halogen oversheath set gradually from inside to outside, along several interior raised lines are axially arranged with, the inorfil filled layer abuts the protective metal shell with the interior raised line.The utility model has and can provide copper core conductor deformation space and the high technical effect of intensity.

Description

A kind of mineral insulated cable
Technical field
The utility model relates to the technical fields of cable and wire, more particularly, to a kind of mineral insulated cable.
Background technique
Mineral insulated cable is a kind of with copper sheath package copper core conductor core wire, and using magnesium oxide powder as inorganic insulation material Expect the cable of insulated conductor and sheath, also known as fireproof cable or copper core copper sheath magnesium oxide insulating cable, foreign countries claim MICC or MI cable.Mineral insulated cable can be divided into two kinds of rigidity and flexibility by structure, be segmented into national standard cable (rigidity) according to standard Cable (flexibility) is marked with enterprise, the rigid extremely difficult bending of mineral cable, transport is equipped with significant ASIC limitation.Mineral insulated cable is answered extensively For skyscraper, petrochemical industry, airport, tunnel, ship, offshore oil platform, aerospace, Ferrous Metallurgy, shopping center, The occasions such as parking lot.Although mineral insulated cable has certain fire-retardant or fire resistance at present, it is easy when it burns Discharge pernicious gas and smog, cause secondary disaster, and air cannot be effectively isolated, can not prevent in the case of fire cable into The burning of one step, there is deficiencies, are not able to satisfy the demand of industry development.
In view of the above-mentioned problems, patent announcement number is the Chinese patent of CN206864205U, it is exhausted to propose a kind of copper core mineral Edge fireproof cable, including armor, copper core conductor, tangent composition conductor loop between copper core conductor are provided on the inside of conductor loop The sandwich layer being made of aramid fiber is provided with thermal insulation layer between conductor loop outside and armor, and the material that thermal insulation layer uses is Halogen The inner core of silicon porcelain cement, copper core conductor is tightened by silicon oxide-wrapped layer, is provided on the outside of silicon oxide-wrapped layer absolutely Edge layer, insulating layer include the mineral composite insulation layer for being attached to silicon oxide-wrapped layer surface, and the surface of mineral composite insulation layer is set It is equipped with the cross linked insulation layer being connected with thermal insulation layer, mineral composite insulation layer is made of mica, and cross linked insulation layer is poly- using crosslinking Ethylene.
Prior art among the above has the following deficiencies: copper core conductor in transmission of electricity inevitable that part electricity It can be converted to the thermal energy of copper core conductor resistance fever, therefore the thermal expansion and contraction of copper core conductor is obvious, and the copper core mineral are exhausted Between each layer structure it is closely knit connection in edge fireproof cable, causes just to squeeze each layer from inside to outside when copper core conductor expanded by heating Structure, repeatedly squeeze makes each layer structure generate loosening in this way, reduces each layer structural strength of protection copper core conductor, shortens cable Service life.
Utility model content
The purpose of the utility model is to provide one kind can provide copper core conductor deformation space and the high mineral insulation of intensity Fireproof cable.
The utility model has the technical scheme that
A kind of mineral insulated cable, including the copper core conductor, inorganic insulation layer, inorganic fibre set gradually from inside to outside Filled layer, protective metal shell and low smoke and zero halogen oversheath are tieed up, the protective metal shell edge is axially arranged with several interior raised lines, the inorganic fibre Dimension filled layer is abutted with the interior raised line.
By using above-mentioned technical proposal, copper core conductor carries out in electricity transmission process as cable core, and inorganic insulation layer is to copper core Conductor plays insulation protection, and inorfil filled layer then plays fire-retardant, heat insulation, and protective metal shell can enhance the strong of cable Spend and as PE line, improve the transmission of electricity safety of cable;Low smoke and zero halogen oversheath due to Halogen plastic material, to have The performances such as good oil resistant, acid and alkali-resistance, anti-aging, anticorrosion, resistance to scraped finish, can play a good protective effect in Exterior cable.
The axially disposed several interior raised lines of protective metal shell, interior raised line are abutted with inorfil filled layer, i.e., inorfil is filled out It fills there are gap between layer and the inner wall of protective metal shell, the deformation that this gap generates when can expand with heat and contract with cold for copper core conductor provides Deformation space is reduced to the squeezing action power of metallic jacket and low smoke and zero halogen oversheath when reducing copper core conductor expanded by heating The mechanical damage of metallic jacket and low smoke and zero halogen oversheath is conducive to that cable is made to keep higher-strength for a long time, to extend The service life of cable.
Be further arranged to: along several compensating tanks are axially arranged on the protective metal shell, the compensating tank is along the copper core Conductor extends radially through the protective metal shell.
By using above-mentioned technical proposal, cable is during long distance power transmission since the heat that electrical loss generates has part It can be transmitted on protective metal shell through inorganic insulation layer and inorfil filled layer, therefore also to generate heat expansion cold for protective metal shell Contracting, several compensating tanks then can provide deformation space to protective metal shell, eliminate stress when protective metal shell generates deformation and concentrate, from And protective metal shell is further decreased due to brought mechanical damage of itself expanding with heat and contract with cold.
Be further arranged to: the copper core conductor includes an inner core copper wire, several internal layer copper wire and several outer layer copper wire, Several internal layer copper wire and outer layer copper wire are successively stranded in inner core copper wire side from the inside to the outside.
By using above-mentioned technical proposal, several internal layer copper wire and several outer layer copper wire are successively stranded in inner core from the inside to the outside Copper wire side, then inner core copper wire and internal layer copper wire and outer layer copper wire constitute the three-decker of closing lay, are conducive to enhance copper core The structural strength of conductor itself, copper core conductor are not easily broken, and cable physical life is longer.
Be further arranged to: the direction of lay of the internal layer copper wire and the outer layer copper wire is opposite.
By using above-mentioned technical proposal, the internal layer copper wire and outer layer copper wire of reverse stranding are conducive to answering inside cable Power is transmitted to all directions, is reduced the stress even being eliminated inside cable and is concentrated, thus make cable that there is good flexural property, Also there is good toughness while with high intensity.
It is further arranged to: being equipped with thermal insulation layer between the protective metal shell and the low smoke and zero halogen oversheath.
By using above-mentioned technical proposal, thermal insulation layer is set, thermal insulation layer rises between protective metal shell and low smoke and zero halogen oversheath To fire prevention, moisture-proof, heat-insulated and waterproof effect, it is conducive to extend the service life of low smoke and zero halogen oversheath.
Be further arranged to: the thermal insulation layer is Halogen silicon porcelain cement layer.
By using above-mentioned technical proposal, for Halogen silicon porcelain cement layer when encountering fire dangerous situation, Halogen silicon porcelain cement layer starts carbon Change, under the protection of low smoke and zero halogen oversheath, be capable of fixing cable core after thermal insulation layer carbonization, and effectively by cable core and external hot gas every It opens, plays the role of the integrality and insulation performance of protecting copper core conductor, it is ensured that cable will not be short-circuit, will not be breaking, Jin Erbao It is unobstructed to demonstrate,prove route.
It is further arranged to: being coated with shielded layer in the protective metal shell outside circumference.
By using above-mentioned technical proposal, since copper core conductor and protective metal shell can generate stronger magnetic field in transmission of electricity, Therefore coat shielded layer in protective metal shell outside circumference, shielded layer can to the magnetic field that copper core conductor and protective metal shell generate into Row shielding, and then reduce cable to the electromagnetism electromagnetic interference of extraneous communication apparatus.
In conclusion the advantageous effects of the utility model are as follows:
(1) copper core conductor carries out in electricity transmission process as cable core, and inorganic insulation layer plays insulation protection to copper core conductor and makees With inorfil filled layer then plays fire-retardant, heat insulation, and protective metal shell can enhance the intensity of cable and as PE line, mention The transmission of electricity safety of high cable;Low smoke and zero halogen oversheath due to Halogen plastic material, to have good oil resistant, acidproof The performances such as alkali, anti-aging, anticorrosion, resistance to scraped finish, can play a good protective effect in Exterior cable;
(2) the axially disposed several interior raised lines of protective metal shell, interior raised line are abutted with inorfil filled layer, i.e. inorfil There are gap between filled layer and the inner wall of protective metal shell, the deformation that this gap generates when can expand with heat and contract with cold for copper core conductor is mentioned For deformation space, to the squeezing action power of metallic jacket and low smoke and zero halogen oversheath, drop when reducing copper core conductor expanded by heating The mechanical damage of low metal oversheath and low smoke and zero halogen oversheath is conducive to that cable is made to keep higher-strength for a long time, to prolong The service life of long cable;
(3) copper core conductor is made of an inner core copper wire, several internal layer copper wire and several outer layer copper wire, and internal layer copper wire and Successively reverse stranding constitutes the three-decker of closing lay, is conducive to several outer layer copper wire in inner core copper wire side from the inside to the outside Enhance the structural strength of copper core conductor itself, copper core conductor is not easily broken, and cable physical life is longer.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model;
Fig. 2 is the planar structure schematic diagram of protective metal shell in Fig. 1.
Appended drawing reference: 1, copper core conductor;2, inorganic insulation layer;3, inorfil filled layer;4, protective metal shell;5, low cigarette without Halogen oversheath;6, interior raised line;7, compensating tank;8, inner core copper wire;9, internal layer copper wire;10, outer layer copper wire;11, thermal insulation layer;12, shield Cover layer.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Referring to Fig.1, it is a kind of mineral insulated cable disclosed by the utility model, is successively led from the inside to the outside including copper core Body 1, inorganic insulation layer 2, inorfil filled layer 3, protective metal shell 4, shielded layer 12, thermal insulation layer 11 and low smoke and zero halogen oversheath 5. For copper core conductor 1 for transmitting electricity, inorganic insulation layer 2 and inorfil filled layer 3 are respectively used to insulation and heat-insulated, moisture-proof, metal shield Set 4 is copper pipe sleeve and aluminum pipe sleeve and is used as PE line, while providing the effect of overall structure supporting and shaping for cable.Shielded layer 12 Generated magnetic field when for shielding copper core conductor 1 and the transmission of electricity of protective metal shell 4, thermal insulation layer 11 and low smoke and zero halogen oversheath 5 are used for Completely cut off the heat generated in 1 electricity transmission process of copper core conductor and flame when blocking external fire is spread to copper core conductor 1.
Copper core conductor 1 includes an inner core copper wire 8, several internal layer copper wire 9 and several outer layer copper wire 10, several internal layers Copper wire 9 and outer layer copper wire 10 are successively stranded in 8 side of inner core copper wire and internal layer copper wire 9 and outer layer copper wire 10 from the inside to the outside Direction of lay is opposite.Inorganic insulation layer 2 is high temperature resistant, incombustible inorganic oxide magnesium insulating layer, and inorfil filled layer 3 is by glass Glass fibrous layer, glass fibre has non-ignitable, anti-corruption, thermal insulation preferable, and tensile strength is high, and the good advantage of electrical insulating property can Play the role of good partiting thermal insulation while improving cable tensile strength.
Referring to Fig. 1 and Fig. 2, protective metal shell 4 is along axial direction integrally formed with several interior raised lines 6, the inorfil filled layer 3 It is abutted with the interior raised line 6, while being provided in the axial direction with several discontinuous compensating tanks 7 on protective metal shell 4, the compensating tank 7 The protective metal shell 4 is extended radially through along the copper core conductor 1.Interior raised line 6 fills inorfil with inorfil filled layer 3 There are gap between layer 3 and the inner wall of protective metal shell 4, the deformation that this gap generates when expanding with heat and contract with cold for copper core conductor 1 provides shape It emptying, to the squeezing action power of metallic jacket and low smoke and zero halogen oversheath 5 when reducing 1 expanded by heating of copper core conductor, reduces The mechanical damage of metallic jacket and low smoke and zero halogen oversheath 5, it is empty that several compensating tanks 7 then provide deformation to protective metal shell 4 itself Between, it eliminates stress when protective metal shell 4 generates deformation due to expanding with heat and contract with cold and concentrates, further decrease protective metal shell 4 due to itself It expands with heat and contract with cold brought mechanical damage, to extend the service life of cable.
Shielded layer 12 is the tinned copper wire woven shield 12 for being coated on 4 outer surface of protective metal shell, to shield copper core conductor 1 Generated magnetic field when transmitting electricity with protective metal shell 4, reduces the Electromagnetic Interference to external communications service and communication apparatus.Thermal insulation layer 11 be Halogen silicon porcelain cement layer, and when encountering fire dangerous situation, Halogen silicon porcelain cement layer starts to be carbonized Halogen silicon porcelain cement layer, in low smoke and zero halogen Under the protection of oversheath 5, thermal insulation layer 11 is capable of fixing cable core after being carbonized, and effectively separates cable core and external hot gas, plays protection The effect of the integrality and insulation performance of copper core conductor 1, it is ensured that cable will not be short-circuit, will not be breaking, and then guarantees that route is unobstructed.
It the implementation principle of the present embodiment and has the beneficial effect that in the axially disposed several interior raised lines 6 of protective metal shell 4, makes nothing There are gap between machine fiber filled layer 3 and the inner wall of protective metal shell 4, production when this gap can expand with heat and contract with cold for copper core conductor 1 Raw deformation provides deformation space, squeezing to metallic jacket and low smoke and zero halogen oversheath 5 when reducing 1 expanded by heating of copper core conductor Active force is pressed, the mechanical damage of metallic jacket and low smoke and zero halogen oversheath 5 is reduced, is conducive to that cable is made to keep higher for a long time Intensity, to extend the service life of cable.
The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical Within novel protection scope.

Claims (7)

1. a kind of mineral insulated cable, it is characterised in that: including the copper core conductor (1), inorganic set gradually from inside to outside Insulating layer (2), inorfil filled layer (3), protective metal shell (4) and low smoke and zero halogen oversheath (5), protective metal shell (4) edge It is axially arranged with several interior raised lines (6), the inorfil filled layer (3) abuts with the interior raised line (6).
2. mineral insulated cable according to claim 1, it is characterised in that: along axial direction on the protective metal shell (4) Equipped with several compensating tanks (7), the compensating tank (7) extends radially through the protective metal shell (4) along the copper core conductor (1).
3. mineral insulated cable according to claim 1, it is characterised in that: the copper core conductor (1) includes one Inner core copper wire (8), several internal layer copper wire (9) and several outer layer copper wire (10), several internal layer copper wire (9) and outer layer copper wire (10) it is successively stranded in inner core copper wire (8) side from the inside to the outside.
4. mineral insulated cable according to claim 3, it is characterised in that: the internal layer copper wire (9) and described outer The direction of lay of layer copper wire (10) is opposite.
5. mineral insulated cable according to claim 1, it is characterised in that: the protective metal shell (4) with it is described low Thermal insulation layer (11) are equipped between cigarette Halogen oversheath (5).
6. mineral insulated cable according to claim 5, it is characterised in that: the thermal insulation layer (11) is Halogen silicon porcelain Glue-line.
7. mineral insulated cable according to claim 6, it is characterised in that: protective metal shell (4) outside circumference On be coated with shielded layer (12).
CN201920625247.0U 2019-04-30 2019-04-30 A kind of mineral insulated cable Active CN209625901U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920625247.0U CN209625901U (en) 2019-04-30 2019-04-30 A kind of mineral insulated cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920625247.0U CN209625901U (en) 2019-04-30 2019-04-30 A kind of mineral insulated cable

Publications (1)

Publication Number Publication Date
CN209625901U true CN209625901U (en) 2019-11-12

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CN201920625247.0U Active CN209625901U (en) 2019-04-30 2019-04-30 A kind of mineral insulated cable

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114388178A (en) * 2022-01-25 2022-04-22 广东南帆电器有限公司 Flexible insulation fireproof cable with metal sheath

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114388178A (en) * 2022-01-25 2022-04-22 广东南帆电器有限公司 Flexible insulation fireproof cable with metal sheath
CN114388178B (en) * 2022-01-25 2024-03-29 广东南帆电器有限公司 Flexible insulating fireproof cable with metal sheath

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Mineral insulated fireproof cable

Effective date of registration: 20211104

Granted publication date: 20191112

Pledgee: Agricultural Bank of China Limited Hunan Xiangjiang New Area Branch

Pledgor: HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd.

Registration number: Y2021430000067

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20221125

Granted publication date: 20191112

Pledgee: Agricultural Bank of China Limited Hunan Xiangjiang New Area Branch

Pledgor: HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd.

Registration number: Y2021430000067

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A mineral insulated fireproof cable

Effective date of registration: 20221214

Granted publication date: 20191112

Pledgee: Agricultural Bank of China Limited Changsha Lushan Sub branch

Pledgor: HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd.

Registration number: Y2022430000112

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20231220

Granted publication date: 20191112

Pledgee: Agricultural Bank of China Limited Changsha Lushan Sub branch

Pledgor: HUNAN XIANGJIANG CABLES CO.,LTD.|HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd.|JIANGXI NANYUAN CABLE Co.,Ltd.

Registration number: Y2022430000112

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A mineral insulated fireproof cable

Effective date of registration: 20231227

Granted publication date: 20191112

Pledgee: Agricultural Bank of China Limited Changsha Lushan Sub branch

Pledgor: HUNAN XIANGJIANG CABLES CO.,LTD.|HUBEI NANYUAN CABLE TECHNOLOGY Co.,Ltd.|JIANGXI NANYUAN CABLE Co.,Ltd.

Registration number: Y2023980074911