阅读说明：本技术 一种耐高温线缆及其生产工艺 (High-temperature-resistant cable and production process thereof ) 是由 白剑英 唐秀妙 白建涛 于 2020-05-15 设计创作，主要内容包括：本发明涉及一种耐高温线缆及其生产工艺,属于线缆制造的技术领域,其包括线芯,所述线芯外侧设置有保护层和耐高温层,保护层置于靠近线芯的一侧,保护层包括向着远离线芯方向依次设置的绝缘漆层、橡胶颗粒凝结层、玻璃纤维层、聚四氟乙烯层和石英层；耐高温层包括向着远离石英层方向依次设置的导热硅脂层、导热硅胶层、耐火黏土层和陶瓷纤维层；保护层向着靠近线芯方向凹陷形成卡槽,耐高温层正对卡槽的位置处向着卡槽的方向突出并形成与卡槽插接适配的卡条,本发明具有提高线缆使用稳定性的效果。(The invention relates to a high-temperature-resistant cable and a production process thereof, belonging to the technical field of cable manufacture and comprising a cable core, wherein the outer side of the cable core is provided with a protective layer and a high-temperature-resistant layer, the protective layer is arranged at one side close to the cable core, and the protective layer comprises an insulating paint layer, a rubber particle coagulation layer, a glass fiber layer, a polytetrafluoroethylene layer and a quartz layer which are sequentially arranged towards the direction far away from the cable core; the high-temperature resistant layer comprises a heat-conducting silicone grease layer, a heat-conducting silicone layer, a refractory clay layer and a ceramic fiber layer which are sequentially arranged towards the direction far away from the quartz layer; the protective layer is sunken towards the direction close to the wire core to form a clamping groove, the position of the high-temperature-resistant layer opposite to the clamping groove is protruded towards the direction of the clamping groove, and a clamping strip in splicing fit with the clamping groove is formed.)

1. A high temperature resistant cable comprising a core (1), characterized in that: the protective layer (2) and the high-temperature-resistant layer (3) are arranged on the outer side of the wire core (1), the protective layer (2) is arranged on one side close to the wire core (1), and the protective layer (2) comprises an insulating paint layer (21), a rubber particle condensation layer (22), a glass fiber layer (23), a polytetrafluoroethylene layer (24) and a quartz layer (25) which are sequentially arranged towards the direction far away from the wire core (1); the high-temperature resistant layer (3) comprises a heat-conducting silicone grease layer (31), a heat-conducting silicone layer (32), a refractory clay layer (33) and a ceramic fiber layer (34) which are sequentially arranged towards the direction far away from the quartz layer (25); the protective layer (2) is sunken towards the direction close to the wire core (1) to form a clamping groove (4), and the position of the high temperature resistant layer (3) opposite to the clamping groove (4) is protruded towards the direction of the clamping groove (4) to form a clamping strip (5) which is in splicing fit with the clamping groove (4).

2. A high temperature resistant cable according to claim 1, wherein: a plurality of clamping grooves (4) are formed in the protective layer (2), and the clamping grooves (4) are uniformly arranged on the circumferential surface of the protective layer (2) at intervals; the number of the clamping strips (5) on the high temperature resistant layer (3) is matched with that of the clamping grooves (4), and the clamping strips (5) are respectively inserted into the clamping grooves (4) and clamped with the clamping grooves (4).

3. A high temperature resistant cable according to claim 1, wherein: the clamping groove (4) and the clamping strip (5) are arranged in a surrounding mode around the center of the wire core (1).

4. A high temperature resistant cable according to claim 1, wherein: an expansion joint (6) is arranged on the circumferential surface of the protective layer (2).

5. A high temperature resistant cable according to claim 4, wherein: the rubber particle coagulation layer (22) and the glass fiber layer (23) which are close to one side of the expansion joint (6) extend outwards to form the lap joint layer (7), the polytetrafluoroethylene layer (24) and the quartz layer (25) which are close to the other side of the expansion joint (6) extend outwards to form the connecting layer (8), and the connecting layer (8) is sleeved on the lap joint layer (7) and is connected with the lap joint layer (7) in a sliding mode.

6. A high temperature resistant cable according to claim 5, wherein: guide way (71) have been seted up to the surface of overlap joint layer (7), and the integrative rigid coupling in position department that the internal surface of articulamentum (8) corresponds guide way (71) has guide strip (81) with guide way (71) grafting adaptation, and guide strip (81) are pegged graft with guide way (71) and are linked to each other.

7. A high temperature resistant cable according to any one of claims 1-6, wherein: the production process comprises the following steps:

s1, uniformly coating the insulating varnish on the surface of the wire core (1), and smoothing the outer surface of the insulating varnish coated on the surface of the wire core (1);

s2, bonding the rubber particle coagulation layer (22), the glass fiber layer (23), the polytetrafluoroethylene layer (24) and the quartz layer (25) together layer by layer from inside to outside, extending the rubber particle coagulation layer (22) and the glass fiber layer (23) at one end outwards to form an overlapping layer (7), and extending the polytetrafluoroethylene layer (24) and the quartz layer (25) at the other end outwards to form a connecting layer (8);

s3, bonding the heat-conducting silicone grease layer (31), the heat-conducting silicone rubber layer (32), the refractory clay layer (33) and the ceramic fiber layer (34) layer by layer from inside to outside;

s4, sleeving the rubber particle coagulation layer (22), the glass fiber layer (23), the polytetrafluoroethylene layer (24) and the quartz layer (25) which are adhered together on the wire core (1) coated with the insulating paint to form a protective layer (2), and sleeving the connecting layer (8) on the lapping layer (7) to enable the connecting layer (8) and the lapping layer (7) to be connected in a sliding manner;

s5, sleeving the high temperature resistant layer (3) on the protective layer (2), and clamping the high temperature resistant layer (3) and the protective layer (2) in a butting position.

Technical Field

The invention relates to the technical field of cable manufacturing, in particular to a high-temperature-resistant cable and a production process thereof.

Background

Cable is a generic term for optical cables, electrical cables, and the like. The cable has many purposes, is mainly used for controlling installation, connecting equipment, transmitting power and other multiple functions, and is a common and indispensable object in daily life. The high-temperature resistant cable is an important development direction of modern safe electric energy transmission technology, and the high-temperature resistant performance of certain industries on the electric wire and cable is higher and higher.

The existing Chinese patent with reference to publication number CN207925152U discloses a high-temperature-resistant cable, which comprises a cable core, wherein an insulating paint layer is coated on the outer wall of the cable core, a rubber particle coagulation layer is arranged on the outer wall of the insulating paint layer, a glass fiber layer is arranged on the outer wall of the rubber particle coagulation layer, and a polytetrafluoroethylene layer is arranged on the outer wall of the glass fiber layer. The utility model discloses an insulating properties of cable has been increased to a plurality of insulating layers, in the rubber granule coagulation layer, there is tiny clearance between granule and the granule, when being in high temperature environment, the inside temperature accessible clearance of cable is discharged, fine radiating action has, and heat conduction silicone grease layer and heat conduction silicone layer have still been set up, the radiating effect who makes the cable is better, thereby make the heat of cable spread in the air, the heat dispersion of cable has been improved, and the glass fiber layer can tolerate 500 ℃ -800 ℃, this makes this cable can use in high temperature environment, and fire-resistant layer, make the cable pliability good, the advantage that has the thermal-insulated clay that keeps warm and prevent fires, can effectively prolong the holistic life of cable.

The above prior art solutions have the following drawbacks: this high temperature resistant cable only bonds between protective structure such as insulating varnish layer, rubber particle coagulation layer, glass fiber layer, polytetrafluoroethylene layer that set gradually from inside to outside and links to each other, leads to the connection stability between the adjacent protective structure relatively poor.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a high-temperature-resistant cable, which achieves the effect of improving the use stability of the cable.

One of the above technical objects of the present invention is achieved by the following technical solutions:

a high-temperature-resistant cable comprises a cable core, wherein a protective layer and a high-temperature-resistant layer are arranged on the outer side of the cable core, the protective layer is arranged on one side close to the cable core, and the protective layer comprises an insulating paint layer, a rubber particle condensation layer, a glass fiber layer, a polytetrafluoroethylene layer and a quartz layer which are sequentially arranged towards the direction far away from the cable core; the high-temperature resistant layer comprises a heat-conducting silicone grease layer, a heat-conducting silicone layer, a refractory clay layer and a ceramic fiber layer which are sequentially arranged towards the direction far away from the quartz layer; the protective layer is sunken towards the direction close to the wire core to form a clamping groove, and the position of the high-temperature-resistant layer opposite to the clamping groove is protruded towards the direction of the clamping groove to form a clamping strip in splicing fit with the clamping groove.

By adopting the technical scheme, the insulating paint layer, the rubber particle coagulation layer, the glass fiber layer, the protective layer consisting of the polytetrafluoroethylene layer and the quartz layer is arranged on the outer side of the wire core, the heat-conducting silicone layer, the high-temperature-resistant layer consisting of the fireproof clay layer and the ceramic fiber layer is arranged on the outer side of the protective layer, the protective layer and the high-temperature-resistant layer are matched with each other to protect the wire core, the insulating property of the cable is improved, fine gaps exist between particles in the rubber particle coagulation layer, when the cable is in a high-temperature environment, the internal temperature of the cable can be discharged through the gaps, a good heat dissipation effect is achieved, the heat-conducting silicone layer and the heat-conducting silicone layer enable the heat dissipation effect of the cable to be better, the cable is prevented from being; the cable has higher high temperature resistant effect, is fit for using in high temperature environment, and fire-resistant clay layer has thermal-insulated fire prevention's advantage, in addition, is connected through card strip and draw-in groove complex mode between protective layer and the high temperature resistant layer, strengthens being connected between protective layer and the high temperature resistant layer, reaches the effect that improves cable stability in use.

The present invention in a preferred example may be further configured to: the protective layer is provided with a plurality of clamping grooves, and the plurality of clamping grooves are uniformly arranged on the circumferential surface of the protective layer at intervals; the card strips on the high temperature resistant layer are matched with the clamping grooves in number, and the plurality of card strips are respectively inserted into the clamping grooves and clamped with the clamping grooves.

Through adopting above-mentioned technical scheme, set up a plurality of draw-in grooves on the protective layer, the high temperature resistant layer is inside to set up a plurality of card strips, and a plurality of card strips are pegged graft with the draw-in groove, further strengthen the connection stability between protective layer and the high temperature resistant layer, and a plurality of draw-in grooves evenly spaced sets up on the protective layer, and the equilibrium of reinforcing draw-in groove cooperation card strip in the use improves stability and permanent usability of protective layer and high temperature resistant layer when the protection sinle silk.

The present invention in a preferred example may be further configured to: the clamping groove and the clamping strip are arranged in a surrounding mode around the center of the wire core.

Through adopting above-mentioned technical scheme, be draw-in groove, card strip around the center of sinle silk and encircle the form setting, the protective layer cooperation is high temperature resistant layer and is strengthened the protection effect to the sinle silk from the direction of difference, effectively slows down the cable and takes place flagging phenomenon owing to being heated in the use, and the reinforcing prevents cable rapid aging, strengthens the stability in use on cable to the protection on protective layer and high temperature resistant layer.

The present invention in a preferred example may be further configured to: an expansion joint is arranged on the circumferential surface of the protective layer.

Through adopting above-mentioned technical scheme, the cable is because receiving the temperature influence and appearing the condition of expend with heat and contract with cold easily in the use, and the expansion joint on the protective layer circumference face provides certain variation for the expend with heat and contract with cold phenomenon of cable for the cable is difficult for appearing flagging, the difficult phenomenon that tightens that appears when low temperature when high temperature, strengthens the protection to the sinle silk, strengthens the result of use of protective layer, prolongs the life of protective layer, further improves the stability in use of cable.

The present invention in a preferred example may be further configured to: the rubber particle coagulation layer and the glass fiber layer which are close to one side of the expansion joint extend outwards to form an overlapping layer, the polytetrafluoroethylene layer and the quartz layer which are close to the other side of the expansion joint extend outwards to form a connecting layer, and the connecting layer is sleeved on the overlapping layer and is connected with the overlapping layer in a sliding mode.

Through adopting above-mentioned technical scheme, the articulamentum cover is located on the overlap joint layer and is connected with the overlap joint layer cunning, satisfies the removal variable under the high temperature or the low temperature condition between the adjacent protective layer on the one hand, ensures the stability in use between the adjacent protective layer, prolongs the life of protective layer, and on the other hand articulamentum overlaps always and locates on the overlap joint layer, makes the inside sinle silk of protective layer be in encapsulated situation always, ensures the insulating properties and the high temperature resistant effect of cable, further improves the stability in use of cable.

The present invention in a preferred example may be further configured to: the outer surface of the lap joint layer is provided with a guide groove, a guide strip which is in splicing fit with the guide groove is fixedly connected to the position of the inner surface of the connecting layer, which corresponds to the guide groove, in an integrated manner, and the guide strip is spliced with the guide groove.

Through adopting above-mentioned technical scheme, when adjacent protective layer takes place to remove the variable because expend with heat and contract with cold, overlap joint layer and articulamentum between the adjacent protective layer move each other through the cooperation of guide way and guide strip, and the guide way has played the effect of support and guide to the guide strip, and the cooperation of guide way and guide strip has improved the stability of adjacent protective layer at the removal in-process, has strengthened the result of use of overlap joint layer and articulamentum.

The second purpose of the invention is to provide a production process of the high-temperature-resistant cable, which achieves the effect of improving the use stability of the cable.

The second technical purpose of the invention is realized by the following technical scheme:

a production process of a high-temperature-resistant cable comprises the following steps:

s1, uniformly coating the insulating varnish on the surface of the wire core, and smoothing the outer surface of the insulating varnish coated on the surface of the wire core;

s2, bonding the rubber particle coagulation layer, the glass fiber layer, the polytetrafluoroethylene layer and the quartz layer together layer by layer from inside to outside, enabling the rubber particle coagulation layer and the glass fiber layer at one end to extend outwards to form a lap joint layer, and enabling the polytetrafluoroethylene layer and the quartz layer at the other end to extend outwards to form a connecting layer;

s3, adhering the heat-conducting silicone grease layer, the heat-conducting silicone rubber layer, the fireproof clay layer and the ceramic fiber layer together layer by layer from inside to outside;

s4, sleeving the rubber particle coagulation layer, the glass fiber layer, the polytetrafluoroethylene layer and the quartz layer which are adhered together on the wire core coated with the insulating paint to form a protective layer, and sleeving the connecting layer on the lapping layer to enable the connecting layer to be connected with the lapping layer in a sliding manner;

and S5, sleeving the high-temperature-resistant layer on the protective layer, and clamping the high-temperature-resistant layer and the protective layer at the position where the high-temperature-resistant layer is abutted.

By adopting the technical scheme, the insulating paint is uniformly coated on the surface of the wire core, and the outer surface of the insulating paint coated on the surface of the wire core is subjected to smoothing treatment, so that the smoothness degree of the outer surface of the insulating paint is improved; bonding the rubber particle coagulation layer, the glass fiber layer, the polytetrafluoroethylene layer and the quartz layer together layer by layer from inside to outside, extending the rubber particle coagulation layer and the glass fiber layer at one end outwards to form a lap joint layer, extending the polytetrafluoroethylene layer and the quartz layer at the other end outwards to form a connecting layer, arranging a guide groove on the outer surface of the lap joint layer, and integrally and fixedly connecting a guide strip at the position of the connecting layer corresponding to the guide groove; then the heat-conducting silicone grease layer, the heat-conducting silicone adhesive layer, the refractory clay layer and the ceramic fiber layer are adhered together layer by layer from inside to outside; then, sleeving the rubber particle coagulation layer, the glass fiber layer, the polytetrafluoroethylene layer and the quartz layer which are adhered together on the wire core coated with the insulating paint to form a protective layer, sleeving the connecting layer on the lapping layer, inserting the guide strips on the connecting layer into the guide grooves of the lapping layer, and enabling the connecting layer and the lapping layer to be in sliding connection; and finally, sleeving the high-temperature-resistant layer on the protective layer, and clamping the high-temperature-resistant layer and the protective layer at the position where the high-temperature-resistant layer is abutted.

In conclusion, the invention has the following beneficial effects:

1. the protective layer and the high-temperature-resistant layer are arranged on the wire core and connected through the clamping groove and the clamping strip, so that the stability of the cable in the use process is improved;

2. the clamping grooves and the clamping strips are arranged around the center of the wire core in a surrounding manner, so that the phenomenon that the cable sags due to heating in the use process is effectively reduced, and the use stability of the cable is enhanced;

3. through seting up the expansion joint on the circumference face at the protective layer, the expansion joint provides certain change for the expend with heat and contract with cold phenomenon of cable for the cable is difficult for appearing flagging, the difficult phenomenon that tightens when the low temperature when high temperature, further improves the stability in use of cable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic diagram of the exploded structure of the refractory and protective layers of the present invention;

fig. 4 is a schematic diagram of an exploded structure of the protective layer of the present invention.

In the figure, 1, a wire core; 2. a protective layer; 21. an insulating paint layer; 22. a rubber particle coagulated layer; 23. a glass fiber layer; 24. a polytetrafluoroethylene layer; 25. a quartz layer; 3. a high temperature resistant layer; 31. a thermally conductive silicone layer; 32. a heat conductive silica gel layer; 33. a refractory clay layer; 34. a ceramic fiber layer; 4. a card slot; 5. clamping the strip; 6. an expansion joint; 7. a lap joint layer; 71. a guide groove; 8. a connecting layer; 81. and (4) a guide strip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.