阅读说明：本技术 一种矿山用防腐电缆 (Anti-corrosion cable for mine ) 是由 林志伟 林志豪 于 2021-06-25 设计创作，主要内容包括：本发明公开了一种矿山用防腐电缆,包括铜芯、内护套、防腐层、阻水层、外护套,所述铜芯由若干束缠绕绞合,所述内护套包裹在铜芯外侧,所述防腐层涂抹在内护套外层,所述阻水层包裹在防腐层的外层,所述外护套包裹在阻水层外,该外护套内分散有碱性缓释剂,所述阻水层和外护套上均渗透有防腐剂。本发明的绝缘电缆具有良好的防腐蚀性能,能够保证自身防腐性能的同时释放碱性物质中和酸性环境改变自身环境。(The invention discloses an anti-corrosion cable for mines, which comprises a copper core, an inner sheath, an anti-corrosion layer, a water-blocking layer and an outer sheath, wherein the copper core is twisted by winding a plurality of bundles, the inner sheath wraps the outer side of the copper core, the anti-corrosion layer is coated on the outer layer of the inner sheath, the water-blocking layer wraps the outer layer of the anti-corrosion layer, the outer sheath wraps the water-blocking layer, an alkaline slow-release agent is dispersed in the outer sheath, and preservatives permeate into the water-blocking layer and the outer sheath. The insulated cable has good corrosion resistance, and can ensure the corrosion resistance of the insulated cable and release alkaline substances to neutralize the acidic environment to change the environment of the insulated cable.)

1. The utility model provides an anticorrosive cable is used in mine which characterized in that: including copper core, inner sheath, anticorrosive coating, water blocking layer, oversheath, the copper core is twisted by a plurality of bundles of twining, the inner sheath parcel is in the copper core outside, the anticorrosive coating is scribbled including the sheath is outer, the water blocking layer parcel is at the skin of anticorrosive coating, the oversheath parcel is outside the water blocking layer, and the dispersion has alkaline sustained-release agent in this oversheath, it has the antiseptic to all permeate on water blocking layer and the oversheath.

2. The mine anticorrosion cable of claim 1, wherein: the anticorrosive coating comprises a plurality of layers and is fixed on the outer surface of the inner sheath through spraying and baking.

3. The mine anticorrosion cable of claim 1, wherein: the acid slow-release agent and the raw materials of the outer sheath are mixed and doped into the outer sheath, and the outer sheath is a loose thermoplastic elastomer.

4. The mine anticorrosion cable of claim 1, wherein: the alkaline slow release agent is a particulate matter containing an alkaline substance, and the alkaline substance is one or more of sodium sulfide, potassium sulfide, iron sulfide and sodium hydrosulfide.

5. The mine anticorrosion cable of claim 1, wherein: the water-resistant layer is a soft thermoplastic elastomer, and the thickness of the water-resistant layer is 2-5 mm.

6. The mine anticorrosion cable of claim 1, wherein: the preservative permeated on the water-resistant layer and the outer sheath is (2-5) in parts by weight: (4-6) a mixture of potassium dichromate and nitroglycerin.

7. A method for preparing the anticorrosion cable for mine as claimed in claims 1-6, comprising the following steps:

(1) preparing a copper core: taking a plurality of bundles of copper cores, and spirally twisting the outer layer of each bundle of copper cores into copper cores with proper sizes for later use;

(2) wrapping and spraying an anticorrosive layer on the inner sheath: tightly winding the inner sheath on the copper core prepared in the step (1), and then sequentially passing through a plurality of spraying devices to perform multilayer spraying to form an anticorrosive coating;

(3) and (3) penetration of the preservative: respectively placing the raw materials of the water-resistant layer and the outer sheath in a closed space, diluting the preservative, respectively spraying the diluted preservative into the closed space, continuously stirring the raw materials of the water-resistant layer and the outer sheath, and placing for a period of time to complete permeation;

(4) wrapping the water-resistant layer and the outer sheath: and (3) respectively placing the water-resistant layer and the outer sheath raw materials which are permeated into an extruder, penetrating the cable which is sprayed with the anticorrosive layer in the step (2) through the extruder, simultaneously extruding to wrap the water-resistant layer outside the anticorrosive layer, and extruding the outer sheath to wrap the water-resistant layer outside the water-resistant layer.

8. The preparation method of the anticorrosion cable for the mine according to claim 7, wherein the preparation method comprises the following steps: in step (2), the spraying devices have three spraying rooms and a curing room, each spraying room comprises a spraying room and a curing room, the three spraying rooms are identical in structure, nozzles are arranged around the spraying rooms and face the cable, a recovery groove is formed in the bottom of the spraying rooms, the first curing room is air-dried and cured by hot air, the second curing room is dried and cured by high temperature, and the third curing room is cured by cold air.

9. The preparation method of the anticorrosion cable for the mine according to claim 7, wherein the preparation method comprises the following steps: in step (3), the preservative is diluted to a mixture of potassium dichromate and nitroglycerin with water 10: 3 mixing and diluting, wherein the raw materials of the water-resistant layer and the outer sheath are placed in the closed space for 5-15 days.

Technical Field

The invention relates to the technical field of cable preparation, in particular to an anticorrosion cable for a mine.

Background

Power cables are used primarily in the trunk lines of power systems for transmitting and distributing high power electrical energy. The power cable occupies less land, has high reliability, is less influenced by weather conditions and surrounding environment, has stable transmission performance, and plays an important role in the aspect of ultrahigh-voltage electric energy transmission. Cables work in harsh environments where sharp minerals and debris challenge their abrasion resistance and are often subjected to high tensile forces during crimping and stretching, making their life very short, which requires high abrasion, high bend resistance, and other high performance cables. Moreover, in underground ore mining, the cable is often rich in various metal ions and water or acidic corrosive liquid, which requires the cable to have sufficient waterproof and corrosion-resistant properties, so that a cable capable of solving the above problems needs to be found.

Disclosure of Invention

The invention aims to: aiming at the problems, the anti-corrosion cable for the mine is provided, and the material has a high-efficiency flame-retardant effect and a good heat insulation effect.

In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:

the utility model provides an anticorrosive cable is used in mine, includes copper core, inner sheath, anticorrosive coating, water blocking layer, oversheath, the copper core is twined the transposition by a plurality of bundles, the inner sheath parcel is in the copper core outside, the sheath is outer including the anticorrosive coating is paintd, the water blocking layer parcel is at the skin of anticorrosive coating, the oversheath parcel is outside the water blocking layer, and the dispersion has alkaline slow-release agent in this oversheath, it has the antiseptic to all permeate on water blocking layer and the oversheath.

Further, the anticorrosive layer comprises a plurality of layers and is fixed on the outer surface of the inner sheath through spraying and baking.

Further, the acid slow-release agent and the raw materials of the outer sheath are mixed and doped in the outer sheath, and the outer sheath is a loose thermoplastic elastomer.

Further, the alkaline slow release agent is a particulate matter containing an alkaline substance, and the alkaline substance is one or more of sodium sulfide, potassium sulfide, iron sulfide and sodium hydrosulfide.

Furthermore, the water-proof layer is a soft thermoplastic elastomer, and the thickness of the water-proof layer is 2-5 mm.

Further, the preservative penetrating through the water-resistant layer and the outer sheath is prepared from (2-5) parts by weight: (4-6) a mixture of potassium dichromate and nitroglycerin.

A preparation method of an anti-corrosion cable for mines comprises the following steps:

(1) preparing a copper core: taking a plurality of bundles of copper cores, and spirally twisting the outer layer of each bundle of copper cores into copper cores with proper sizes for later use;

(2) wrapping and spraying an anticorrosive layer on the inner sheath: tightly winding the inner sheath on the copper core prepared in the step (1), and then sequentially passing through a plurality of spraying devices to perform multilayer spraying to form an anticorrosive coating;

(3) and (3) penetration of the preservative: respectively placing the raw materials of the water-resistant layer and the outer sheath in a closed space, diluting the preservative, respectively spraying the diluted preservative into the closed space, continuously stirring the raw materials of the water-resistant layer and the outer sheath, and placing for a period of time to complete permeation;

(4) wrapping the water-resistant layer and the outer sheath: and (3) respectively placing the water-resistant layer and the outer sheath raw materials which are permeated into an extruder, penetrating the cable which is sprayed with the anticorrosive layer in the step (2) through the extruder, simultaneously extruding to wrap the water-resistant layer outside the anticorrosive layer, and extruding the outer sheath to wrap the water-resistant layer outside the water-resistant layer.

Further, in step (2), the spraying devices have three spraying devices, each spraying device comprises a spraying room and a curing room, the three spraying rooms are identical in structure, nozzles are arranged around the spraying room and face the cable, a recovery groove is formed in the bottom of the spraying room, the first curing room is dried and cured by hot air, the second curing room is dried and cured by high temperature, and the third curing room is cured by cold air.

Further, in step (3), the preservative is diluted to a mixture of potassium dichromate and nitroglycerin with water 10: 3 mixing and diluting, wherein the raw materials of the water-resistant layer and the outer sheath are placed in the closed space for 5-15 days.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

(1) the cable prepared by the invention is specially used for mine anticorrosion cables, and the anticorrosion performance of the cable can be fully enhanced by spraying a plurality of anticorrosion layers on the inner jacket layer of the cable;

(2) the waterproof layer is additionally arranged on the outer side of the anticorrosive layer, so that the drying of the internal cable can be fully guaranteed, a third anticorrosion is formed, the outer side of the waterproof layer is provided with the outer sheath, the strength of the cable is improved, and the safety of the whole cable is guaranteed;

(3) by permeating the preservative into the raw materials of the water-resistant layer and the outer sheath, the preservative is favorably dispersed in the water-resistant layer and the outer sheath to form a first preservative and a second preservative;

(4) when the anticorrosive coating is sprayed, hot air is adopted in the first curing room to facilitate drying and blow off raw materials of the anticorrosive coating to be thin, high temperature is adopted in the second curing room to cure and thicken the anticorrosive coating, and cold air is adopted in the third curing room to blow away solidified floating grains on the surface and cool the surface;

(5) the cable prepared by the invention has the advantages of simple structure and practical performance, and the prepared cable shell is more convenient to use and has higher safety.

Drawings

FIG. 1 is a schematic cross-sectional view of the structure of the present invention;

in the attached drawing, a copper core 1, an inner sheath 2, an anticorrosive layer 3, a water-resisting layer 4 and an outer sheath 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

Example 1

The utility model provides an anticorrosive cable is used in mine, includes copper core, inner sheath, anticorrosive coating, water blocking layer, oversheath, the copper core is twined the transposition by a plurality of bundles, the inner sheath parcel is in the copper core outside, the sheath is outer including the anticorrosive coating is paintd, the water blocking layer parcel is at the skin of anticorrosive coating, the oversheath parcel is outside the water blocking layer, and the dispersion has alkaline slow-release agent in this oversheath, it has the antiseptic to all permeate on water blocking layer and the oversheath.

The anticorrosive layer comprises a plurality of layers and is fixed on the outer surface of the inner sheath through spraying and baking;

the acid slow-release agent and the raw materials of the outer sheath are mixed and doped into the outer sheath, and the outer sheath is a loose thermoplastic elastomer; the alkaline slow release agent is a particulate matter containing an alkaline substance, and the alkaline substance is one or more of sodium sulfide, potassium sulfide, iron sulfide and sodium hydrosulfide.

The water-resistant layer is a soft thermoplastic elastomer, and the thickness of the water-resistant layer is 2-5 mm; the preservative penetrating through the water-resistant layer and the outer sheath is 3 parts by weight: 5 potassium dichromate and nitroglycerin.

Example 2

A preparation method of an anti-corrosion cable for mines comprises the following steps:

(1) preparing a copper core: taking a plurality of bundles of copper cores, and spirally twisting the outer layer of each bundle of copper cores into copper cores with proper sizes for later use;

(2) wrapping and spraying an anticorrosive layer on the inner sheath: tightly winding the inner sheath on the copper core prepared in the step (1), sequentially passing through a plurality of spraying devices, and performing multilayer spraying to form an anticorrosive coating, wherein the spraying devices have three spraying devices, each spraying device comprises a spraying room and a curing room, the three spraying rooms have the same structure, nozzles are arranged around the inside of the spraying device and face to the cable, a recovery tank is arranged at the bottom of the spraying device, the first curing room in the curing room is subjected to hot air drying and curing, the second curing room is subjected to high-temperature drying and curing, and the third curing room is subjected to cold air curing;

(3) and (3) penetration of the preservative: respectively placing the raw materials of the water-resistant layer and the outer sheath in a closed space, and diluting the preservative into 1 part by weight: 2 mixture of potassium dichromate and nitroglycerin with water 10: 3, mixing and diluting, spraying into a closed space respectively, continuously stirring the raw materials of the water-resistant layer and the outer sheath, and standing for 5 days to finish infiltration;

(4) wrapping the water-resistant layer and the outer sheath: and (3) respectively placing the water-resistant layer and the outer sheath raw materials which are permeated into an extruder, penetrating the cable which is sprayed with the anticorrosive layer in the step (2) through the extruder, simultaneously extruding to wrap the water-resistant layer outside the anticorrosive layer, and extruding the outer sheath to wrap the water-resistant layer outside the water-resistant layer.

Example 3

A preparation method of an anti-corrosion cable for mines comprises the following steps:

(1) preparing a copper core: taking a plurality of bundles of copper cores, and spirally twisting the outer layer of each bundle of copper cores into copper cores with proper sizes for later use;

(2) wrapping and spraying an anticorrosive layer on the inner sheath: tightly winding the inner sheath on the copper core prepared in the step (1), sequentially passing through a plurality of spraying devices, and performing multilayer spraying to form an anticorrosive coating, wherein the spraying devices have three spraying devices, each spraying device comprises a spraying room and a curing room, the three spraying rooms have the same structure, nozzles are arranged around the inside of the spraying device and face to the cable, a recovery tank is arranged at the bottom of the spraying device, the first curing room in the curing room is subjected to hot air drying and curing, the second curing room is subjected to high-temperature drying and curing, and the third curing room is subjected to cold air curing;

(3) and (3) penetration of the preservative: respectively placing the raw materials of the water-resistant layer and the outer sheath in a closed space, and diluting the preservative to 5 parts by weight: 4 potassium dichromate and nitroglycerin with water 10: 3, mixing and diluting, spraying into a closed space respectively, continuously stirring the raw materials of the water-resistant layer and the outer sheath, and standing for 15 days to finish infiltration;

(4) wrapping the water-resistant layer and the outer sheath: and (3) respectively placing the water-resistant layer and the outer sheath raw materials which are permeated into an extruder, penetrating the cable which is sprayed with the anticorrosive layer in the step (2) through the extruder, simultaneously extruding to wrap the water-resistant layer outside the anticorrosive layer, and extruding the outer sheath to wrap the water-resistant layer outside the water-resistant layer.

Example 4

A preparation method of an anti-corrosion cable for mines comprises the following steps:

(1) preparing a copper core: taking a plurality of bundles of copper cores, and spirally twisting the outer layer of each bundle of copper cores into copper cores with proper sizes for later use;

(2) wrapping and spraying an anticorrosive layer on the inner sheath: tightly winding the inner sheath on the copper core prepared in the step (1), sequentially passing through a plurality of spraying devices, and performing multilayer spraying to form an anticorrosive coating, wherein the spraying devices have three spraying devices, each spraying device comprises a spraying room and a curing room, the three spraying rooms have the same structure, nozzles are arranged around the inside of the spraying device and face to the cable, a recovery tank is arranged at the bottom of the spraying device, the first curing room in the curing room is subjected to hot air drying and curing, the second curing room is subjected to high-temperature drying and curing, and the third curing room is subjected to cold air curing;

(3) and (3) penetration of the preservative: respectively placing the raw materials of the water-resistant layer and the outer sheath in a closed space, and diluting the preservative into 3 parts by weight: 5 mixture of potassium dichromate and nitroglycerin with water 10: 3, mixing and diluting, spraying into a closed space respectively, continuously stirring the raw materials of the water-resistant layer and the outer sheath, and standing for 10 days to finish infiltration;

(4) wrapping the water-resistant layer and the outer sheath: and (3) respectively placing the water-resistant layer and the outer sheath raw materials which are permeated into an extruder, penetrating the cable which is sprayed with the anticorrosive layer in the step (2) through the extruder, simultaneously extruding to wrap the water-resistant layer outside the anticorrosive layer, and extruding the outer sheath to wrap the water-resistant layer outside the water-resistant layer.

The corrosion resistance of the cable produced by the invention in a mining area is greatly superior to that of a common cable, the alkaline slow-release agent in the application is not limited to the substances listed in the application, and when the cable is used in the alkaline mining area, the acidic slow-release agent can be added into the cable to reduce the corrosion condition when the cable is used in the mining area.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.