Insulation core conductor with anti-icing structure

Abstract

The invention belongs to the technical field of insulated core conductors, and particularly relates to an insulated core conductor with an anti-icing structure, which comprises a conductor, the binding layer is wrapped on the conductor; the sheath is wrapped on the binding layer; the number of the telescopic sleeves is multiple, and the multiple telescopic sleeves are fixedly connected to the protective sleeve at equal intervals. The number of the sliding sleeves is multiple, and each telescopic sleeve is fixedly connected with one sliding sleeve; the number of the movable rings is multiple, and each sliding sleeve is fixedly connected with the movable rings which are distributed at intervals; and the outer layer sleeve wraps the outer sides of the plurality of movable rings. The movable ring moves after the surface of the outer layer sleeve is frozen, so that the shape of the outer layer sleeve is changed, ice on the surface of the outer layer sleeve is broken into small blocks which are prone to falling off, and therefore when the ice melting device is heated to melt ice, falling of the ice is accelerated, the heating time is shortened, and energy is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of insulating core conductors, and in particular relates to an insulating core conductor with an anti-icing structure. Background Art

[0002] The insulated core conductor is an important part of the cable, which is mainly composed of two parts: the conductor and the insulation layer. The insulation layer is wrapped around the outside of the conductor, and the outside of the insulation layer is also wrapped with protective layers such as armor layers. During the use of cables, they will inevitably be affected by freezing rain, icing, etc. Freezing rain and icing will seriously affect the safe operation of the transmission line, and easily lead to faults such as wire de-icing and jumping, phase-to-phase short circuit, and collision with lightning arresters. In severe cases, it may cause power outages such as broken lines and collapsed towers. The power grid difficulties caused by heavy snow, freezing rain, and icing, as well as the paralysis of railways caused by power grid collapse, will seriously threaten people’s property safety, and the above-mentioned impacts are more severe in cold areas.

[0003] There are many methods for cleaning cables when ice is on their surface, such as thermal deicing, mechanical deicing and laser deicing. Among the above deicing methods, the most economical and practical one is thermal deicing, which heats the cable by increasing the current in the cable to melt the ice. However, the existing thermal deicing method can only clean the ice on the cable surface by heating it until it is completely melted, which takes a long time to heat the cable and causes a large amount of power loss. Summary of the invention

[0004] The purpose of the present invention is to provide an insulated core conductor with an anti-icing structure to solve the defects pointed out in the above background technology.

[0005] The technical solution of the present invention is: an insulated core conductor with an anti-icing structure, comprising:

[0006] conductor;

[0007] A binding layer, wherein the binding layer is wrapped around the conductor;

[0008] A sheath, the sheath being wrapped around the binding layer;

[0009] There are a plurality of telescopic sleeves, wherein the plurality of telescopic sleeves are fixedly connected to the sheath at equal intervals;

[0010] There are several sliding sleeves, each of which is fixedly connected to one of the sliding sleeves;

[0011] There are several movable rings, and each of the sliding sleeves is fixedly connected with the movable rings distributed at intervals;

[0012] An outer sleeve is wrapped around the outer sides of the plurality of movable rings.

[0013] More preferably, the linear expansion coefficient of the telescopic sleeve is greater than the linear expansion coefficient of the sliding sleeve and the linear expansion coefficient of the outer sleeve.

[0014] More preferably, one side of the telescopic sleeve is fixedly connected to the sheath, the remaining part is slidably connected to the sheath, and the other side of the telescopic sleeve is fixedly connected to the sliding sleeve.

[0015] More preferably, the outer cover is made of elastic material.

[0016] More preferably, the plurality of movable rings on the same sliding sleeve are equally spaced, the distance between two adjacent movable rings on the same sliding sleeve is s, the length of the telescopic sleeve is S, the temperature change of the telescopic sleeve is T, the linear expansion coefficient of the material used for the telescopic sleeve is α, and αST>s.

[0017] More preferably, the interval between two adjacent telescopic sleeves is y, and y>αST.

[0018] More preferably, the length of the sliding sleeve is less than S+y.

[0019] More preferably, grooves are arranged at intervals on the outer side of the sleeve, protrusions are arranged at intervals on the inner side of the sliding sleeve, the grooves on the sleeve correspond one to one with the protrusions on the sliding sleeve, and the telescopic sleeve is provided with a deformation portion that adapts to the grooves on the sleeve and the protrusions on the sliding sleeve.

[0020] More preferably, lubricating powder is coated between the protective sleeve and the telescopic sleeve, between the telescopic sleeve and the sliding sleeve, and between the sliding sleeve, the moving ring and the outer sleeve.

[0021] More preferably, the moving ring is made of a hard material.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The invention moves the moving ring after ice forms on the surface of the outer sleeve, thereby changing the shape of the outer sleeve and breaking the ice on the surface of the outer sleeve into small pieces that are easy to fall off, thereby accelerating the falling of ice when the invention is heated to melt ice, shortening the heating time and saving energy.

[0024] By providing the telescopic sleeve with circumferentially evenly spaced deformation portions, the telescopic sleeve has a stronger axial strength, thereby reducing the thickness of the telescopic sleeve and further reducing the cost. The sheath and the sliding sleeve clamp the telescopic sleeve to prevent the telescopic sleeve from being damaged due to being too thin when extended.

[0025] By applying lubricating powder between the sheath and the telescopic sleeve, between the telescopic sleeve and the sliding sleeve, and between the sliding sleeve, the moving ring and the outer sleeve, the resistance when the telescopic sleeve drives the sliding sleeve to move is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 is a three-dimensional structural cross-sectional view of the outer sleeve of the present invention;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the telescopic sleeve, the sliding sleeve and the moving ring of the present invention;

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the telescopic sleeve and the sliding sleeve of the present invention.

[0030] In the figure: 1. conductor; 2. binding layer; 3. sheath; 4. telescopic sleeve; 5. sliding sleeve; 6. moving ring; 7. outer sleeve. DETAILED DESCRIPTION

[0031] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] like Figure 1-Figure 4 As shown, an embodiment of the present invention is an insulated core conductor with an anti-icing structure, which is used to reduce the time used for thermal deicing of cables, including: a conductor 1; a binding layer 2, the binding layer 2 is wrapped around the conductor 1; a sheath 3, the sheath 3 is wrapped around the binding layer 2, and the sheath 3 is used to provide protection for the conductor 1 and the binding layer 2; a telescopic sleeve 4, which has a plurality of telescopic sleeves 4, and the plurality of telescopic sleeves 4 are fixedly connected to the sheath 3 at equal intervals; a sliding sleeve 5, which has a plurality of telescopic sleeves 4, and each telescopic sleeve 4 is fixedly connected to a sliding sleeve 5; a plurality of movable rings 6, which has a plurality of movable rings 6, and each sliding sleeve 5 is fixedly connected to movable rings 6 distributed at intervals; an outer sleeve 7, and the outer sleeve 7 is wrapped around the outer sides of the plurality of movable rings 6.

[0033] In the above scheme, the time taken for heating and deicing the cable is reduced. The conductor 1 is the conductive part of the cable, and the number can be one or more. The number of conductors 1 is determined during production according to the use requirements of the cable. The outer side of the conductor 1 is wrapped with an insulating layer, which is used to prevent the conductor 1 from leaking electricity. When a cable contains multiple conductors 1, the multiple conductors 1 are bundled together using a binding layer 2, and the sheath 3 is wrapped on the outer side of the binding layer 2 to provide protection for the conductor 1 and the binding layer 2, so that the conductor 1 and the binding layer 2 are not affected by external forces. The sheath 3 can be made of polyvinyl chloride, polyethylene, rubber or thermoplastic elastomer. The telescopic sleeve 4 has a higher linear expansion coefficient (such as pure zinc). When the ambient temperature changes, the telescopic sleeve 4 will have a larger expansion amount, thereby serving as a power to drive the adjacent sliding sleeve 5 to move. The sliding sleeve 5 has a lower linear expansion coefficient and is mainly used to install the moving ring 6. When the temperature changes, the telescopic sleeve 4 expands and contracts, and drives several moving rings 6 to move through the adjacent sliding sleeves 5, thereby assisting in deicing.

[0034] The linear expansion coefficient of the telescopic sleeve 4 is greater than the linear expansion coefficient of the sliding sleeve 5 and the linear expansion coefficient of the outer sleeve 7 , and is used to enable the moving ring 6 to move relative to the outer sleeve 7 .

[0035] In the above scheme, the purpose is to make the movable ring 6 and the outer sleeve 7 move relative to each other. The telescopic sleeve 4 has a high linear expansion coefficient. When the temperature changes, the expansion and contraction of the telescopic sleeve 4 will drive the adjacent sliding sleeve 5 to move, and the sliding sleeve 5 drives several movable rings 6 to move relative to the outer sleeve 7.

[0036] One side of the telescopic sleeve 4 is fixedly connected to the sheath 3 , and the rest of the telescopic sleeve 4 is slidably connected to the sheath 3 . The other side of the telescopic sleeve 4 is fixedly connected to the sliding sleeve 5 , so that the moving distance of the sliding sleeve 5 is equal to the telescopic amount of the adjacent telescopic sleeve 4 .

[0037] In the above scheme, the telescopic sleeve 4 is used to move the sliding sleeve 5 by telescoping. The rear side of the telescopic sleeve 4 is fixedly connected to the protective sleeve 3, and the front side of the telescopic sleeve 4 is fixedly connected to the sliding sleeve 5. When the telescopic sleeve 4 is telescoping, the sliding sleeve 5 can move in the maximum range.

[0038] The outer sleeve 7 is made of elastic material, and is used to wrap the plurality of movable rings 6 to form an uneven surface.

[0039] In the above scheme, the purpose is to cause the outer sleeve 7 to deform and peel off the ice. When the outer sleeve 7 is wrapped around the outside of several movable rings 6, the outer sleeve 7 will be supported by the movable rings 6 at intervals, and the remaining part will shrink inward due to its own elasticity, so that the overall appearance of the outer sleeve 7 is similar to that of a corrugated tube. At this time, moving the movable rings 6 will cause the crests and troughs of the outer sleeve 7 to shift as a whole, and the ice attached to the outer sleeve 7 cannot change with the changes of the outer sleeve 7, thereby separating the outer sleeve 7 from the ice. When the movable rings 6 move, the troughs of the ice will be squeezed through the outer sleeve 7, thereby breaking the ice and falling off the outer sleeve 7.

[0040] Several movable rings 6 located on the same sliding sleeve 5 are distributed at equal intervals, so as to form neat corrugations on the surface of the outer sleeve 7. The interval between two adjacent movable rings 6 located on the same sliding sleeve 5 is s, the length of the telescopic sleeve 4 is S, the temperature change of the telescopic sleeve 4 is T, the linear expansion coefficient of the material used for the telescopic sleeve 4 is α, αST>s, so as to make the movable rings 6 squeeze the troughs covered with ice on the surface of the outer sleeve 7.

[0041] In the above scheme, the purpose is to move the mobile ring 6 a sufficient distance so as to break the ice on the outside of the outer sleeve 7. When the cable is covered with ice, the temperature of the cable is -20°C, the temperature of heating and deicing is 20°C, the length of the telescopic sleeve 4 is 10m, and the material of the telescopic sleeve 4 is pure zinc (the linear expansion coefficient of pure zinc is about 0.00003 / °C). For example, when the cable is heated and de-iced, the elongation of the telescopic sleeve 4 is 12mm. At this time, as long as the distance between the two mobile rings 6 is less than 12mm, the mobile ring 6 can move from one wave crest of the ice to another wave crest when moving, so that the ice can be broken more completely and residual annular or arc-shaped ice can be avoided from hanging on the outer sleeve 7.

[0042] The interval between two adjacent telescopic sleeves 4 is y, where y>αST.

[0043] In the above solution, the purpose is to avoid the telescopic sleeve 4 from contacting the adjacent telescopic sleeve 4 when the telescopic sleeve 4 is extended.

[0044] The length of the sliding sleeve 5 is less than S+y.

[0045] In the above solution, the purpose is to avoid the sliding sleeve 5 from contacting other telescopic sleeves 4 when moving.

[0046] Working principle: When the present invention is used for deicing, the current of the conductor 1 is increased, and the heat generation of the conductor 1 is increased. At this time, the overall shape of the ice on the outer surface of the outer sleeve 7 is similar to a bellows. As the heat generation of the conductor 1 increases, the temperature of the outer sleeve 7 also rises, so that the ice begins to melt from the inside. At the same time, the telescopic sleeve 4 is heated and elongated. When the telescopic sleeve 4 is elongated, it pushes the adjacent sliding sleeve 5 to move forward. The sliding sleeve 5 drives the several moving rings 6 thereon to move. When the moving rings 6 move, the corrugations on the outer sleeve 7 move. At this time, due to the ice attached to the outside of the outer sleeve 7, The outer sleeve 7 has no elasticity, so the outwardly convex part of the ice outside the outer sleeve 7 is separated from the outer sleeve 7. When the movable ring 6 moves, the outwardly convex position of the outer sleeve 7 gradually moves forward. At this time, the inwardly concave part of the ice is squeezed by the outer sleeve 7. Since the ice has no elasticity, it breaks. When the ice here breaks, the convex part nearby is also broken, so that the ice is broken into small pieces that are easier to fall off from the outer sleeve 7, avoiding that the ice remains on the outer sleeve 7 in a whole circle or arc-shaped on the upper side of the outer sleeve 7 when melting, thereby shortening the time for the current in the conductor 1 to increase and saving energy.

[0047] The outer side of the sheath 3 is provided with grooves at intervals in the circumferential direction, and the inner side of the sliding sleeve 5 is provided with protrusions at intervals in the circumferential direction. The grooves on the sheath 3 correspond to the protrusions on the sliding sleeve 5 one by one, and the telescopic sleeve 4 is provided with a deformation part that adapts to the grooves on the sheath 3 and the protrusions on the sliding sleeve 5.

[0048] In the above scheme, in order to enhance the axial mechanical strength of the telescopic sleeve 4 and reduce the thickness of the telescopic sleeve 4, thereby reducing the material usage of the telescopic sleeve 4 to reduce the cost, the grooves on the sleeve 3 and the protrusions on the sliding sleeve 5 and the deformed portion of the telescopic sleeve 4 can be arranged at equal intervals, so that the overall stress distribution of the sleeve 3, the telescopic sleeve 4 and the sliding sleeve 5 is more uniform.

[0049] Lubricating powder is applied between the sheath 3 and the telescopic sleeve 4 , between the telescopic sleeve 4 and the sliding sleeve 5 , and between the sliding sleeve 5 , the moving ring 6 and the outer sleeve 7 .

[0050] In the above scheme, the purpose is to reduce the friction between the sheath 3 and the telescopic sleeve 4, the telescopic sleeve 4 and the sliding sleeve 5, and the sliding sleeve 5, the movable ring 6 and the outer sleeve 7, so as to reduce the resistance encountered by the telescopic sleeve 4 when it is extended and retracted, and avoid damage to the telescopic sleeve 4 due to excessive resistance encountered when it is extended.

[0051] The moving ring 6 is made of hard material and is used to provide protection for the conductor 1 .

[0052] Working principle: When the telescopic sleeve 4 is extended and retracted, the telescopic sleeve 4 drives the sliding sleeve 5 and the plurality of moving rings 6 to move, and the resistance encountered by the sliding sleeve 5 and the plurality of moving rings 6 when moving is reduced under the action of the lubricating powder.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An insulated core conductor with an anti-icing structure, characterized in that: include: Conductor (1); A binding layer (2), the binding layer (2) being wrapped around the conductor (1); A sheath (3), wherein the sheath (3) is wrapped around the binding layer (2); A plurality of telescopic sleeves (4), wherein the plurality of telescopic sleeves (4) are fixedly connected to the protective sleeve (3) at equal intervals; There are a plurality of sliding sleeves (5), and each of the telescopic sleeves (4) is fixedly connected to one of the sliding sleeves (5); There are a plurality of movable rings (6), and each of the sliding sleeves (5) is fixedly connected with the movable rings (6) distributed at intervals; An outer sleeve (7), wherein the outer sleeve (7) is wrapped around the outer sides of the plurality of movable rings (6).

2. The insulated core conductor of the anti-icing structure according to claim 1 is characterized in that: The linear expansion coefficient of the telescopic sleeve (4) is greater than the linear expansion coefficient of the sliding sleeve (5) and the linear expansion coefficient of the outer sleeve (7).

3. The insulated core conductor of the anti-icing structure according to claim 1 is characterized in that: One side of the telescopic sleeve (4) is fixedly connected to the protective sleeve (3), and the remaining part is slidably connected to the protective sleeve (3); the other side of the telescopic sleeve (4) is fixedly connected to the sliding sleeve (5).

4. The insulated core conductor of the anti-icing structure according to claim 1 is characterized in that: The outer sleeve (7) is made of elastic material.

5. The insulated core conductor of the anti-icing structure according to claim 2 is characterized in that: The plurality of movable rings (6) located on the same sliding sleeve (5) are distributed at equal intervals, the interval between two adjacent movable rings (6) located on the same sliding sleeve (5) is s, the length of the telescopic sleeve (4) is S, the temperature change of the telescopic sleeve (4) is T, the linear expansion coefficient of the material used for the telescopic sleeve (4) is α, and αST>s.

6. The insulated core conductor of the anti-icing structure according to claim 5 is characterized in that: The interval between two adjacent telescopic sleeves (4) is y, where y>αST.

7. The insulated core conductor of the anti-icing structure according to claim 6 is characterized in that: The length of the sliding sleeve (5) is less than S+y.

8. The insulated core conductor of the anti-icing structure according to claim 1 is characterized in that: The outer side of the sleeve (3) is provided with grooves at intervals in the circumferential direction, and the inner side of the sliding sleeve (5) is provided with protrusions at intervals in the circumferential direction. The grooves on the sleeve (3) correspond to the protrusions on the sliding sleeve (5) one by one, and the telescopic sleeve (4) is provided with a deformation portion adapted to the grooves on the sleeve (3) and the protrusions on the sliding sleeve (5).

9. The insulated core conductor of the anti-icing structure according to claim 8, characterized in that: Lubricating powder is coated between the protective sleeve (3) and the telescopic sleeve (4), between the telescopic sleeve (4) and the sliding sleeve (5), and between the sliding sleeve (5), the moving ring (6) and the outer sleeve (7).

10. The insulated core conductor of the anti-icing structure according to claim 9, characterized in that: The moving ring (6) is made of hard material.

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