Hoisting medium-voltage cable
By twisting flexible steel wire ropes and polypropylene ropes with multiple cables, combined with an armor layer design of galvanized steel wire and steel belt, the problem of insufficient tension when hoisting medium-voltage cables in high-rise buildings is solved, and a medium-voltage cable with high flexibility and high tensile strength is achieved.
Patent Information
- Application Number
- CN202423184538.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing hoisting medium-voltage cables are difficult to meet the higher hoisting tension requirements in high-rise buildings, especially when laid vertically.
Flexible steel wire rope and polypropylene rope are twisted with multiple strands of cable, combined with an armor layer design of galvanized steel wire and steel tape to enhance the flexibility and tensile strength of the cable, and flame retardant materials are used for protection.
The flexibility and tensile strength of the hoisted medium-voltage cable are improved, which can meet the higher hoisting tension requirements while having good protection and environmental protection performance.
Smart Images
Figure CN223450581U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wire and cable technical field, especially in hoisting medium voltage cable. BACKGROUND
[0002] With the high -speed development of economic society, high building is more and more, to meet its power consumption, transmission power's demand, hoisting medium voltage cable is generally used in high building in current high building, generally will transformer be placed in the middle layer or high layer of high building, hoisting medium voltage cable is directly sent into the corresponding floor of high building, in this case, hoisting medium voltage cable mostly adopts vertical laying, and the longitudinal tension that bears is big, therefore its hoisting tension requirement is higher, and the hoisting medium voltage cable of present is difficult to reach the requirement. SUMMARY
[0003] The utility model discloses at least one of the technical problems in prior art is solved, for this, the utility model provides a hoisting medium voltage cable, can satisfy higher hoisting tension requirement.
[0004] The hoisting medium voltage cable according to the embodiment of the utility model, including cable, filler layer, first gasket layer, isolating sleeve, armoring layer and outer sheath, the cable is equipped with multiple strands, the filler layer includes flexible steel wire rope and polypropylene rope, the flexible steel wire rope, the polypropylene rope and multiple strands the cable is hinged, the first gasket layer is surrounded in the outer circumferential side of flexible steel wire rope, polypropylene rope and multiple strands the cable, the isolating sleeve is located at the outer circumferential side of the first gasket layer, the armoring layer is located at the outer circumferential side of the isolating sleeve, the outer sheath is located at the outer circumferential side of the armoring layer.
[0005] The hoisting medium voltage cable according to the embodiment of the utility model has at least the following beneficial effects: the flexibility and tensile strength of flexible steel wire rope and polypropylene rope are higher, by the hinging of flexible steel wire rope, polypropylene rope and multiple strands cable, the flexibility and tensile strength of hoisting medium voltage cable can be effectively enhanced, thereby higher hoisting tension requirement can be satisfied.
[0006] According to an embodiment of the utility model, the flexible steel wire rope is IWS flexible steel wire rope.
[0007] According to an embodiment of the utility model, the number of flexible steel wire rope is a, and the number of polypropylene rope is b, and a:b=2:1 is met.
[0008] According to an embodiment of the utility model, the armoring layer includes first layer body and second layer body, and the first layer body and the second layer body are sequentially arranged along the direction away from the isolating sleeve.
[0009] According to an embodiment of the utility model, the first layer body and the second layer body are both formed by galvanized steel wire spiral winding, and the spiral winding directions of the galvanized steel wires of the first layer body and the second layer body are opposite.
[0010] According to an embodiment of the utility model, the armored layer further comprises a galvanized steel belt, and the galvanized steel belt is spiral wound on the outer circumferential side of the second layer body.
[0011] According to an embodiment of the utility model, the spiral winding directions of the galvanized steel belt and the galvanized steel wires of the second layer body are opposite.
[0012] According to an embodiment of the utility model, a second gasket layer is further arranged between the outer circumferential side of the armored layer and the inner circumferential side of the outer sheath.
[0013] According to an embodiment of the utility model, the isolating sleeve is made of flame-retardant low-smoke halogen-free material or flame-retardant polyvinyl chloride material.
[0014] According to an embodiment of the utility model, the outer sheath is made of high-flame-retardant low-smoke halogen-free material or high-flame-retardant polyvinyl chloride material.
[0015] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or be known by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0016] The utility model will be further explained in combination with the drawings and embodiments, wherein:
[0017] Figure 1 It is the cross section schematic view of hoisting medium voltage cable of an embodiment of the utility model;
[0018] Figure 2 It is the cross section schematic view of cable of hoisting medium voltage cable of an embodiment of the utility model.
[0019] REFERENCE NUMERALS:
[0020] Hoisting medium voltage cable 1000;
[0021] Cable 100; conductor 110; conductor shield layer 120; insulation layer 130; insulation shield layer 140; metal shield layer 150;
[0022] Filler layer 200; flexible steel wire rope 210; polypropylene rope 220;
[0023] First gasket layer 300;
[0024] Isolating sleeve 400;
[0025] Armour layer 500; first layer body 510; second layer body 520;
[0026] Outer sheath 600;
[0027] Second gasket layer 700. DETAILED DESCRIPTION
[0028] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for the purpose of explaining the present application, and should not be understood as a limitation of the present application.
[0029] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, inner, outer, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.
[0030] In the description of the present application, if there is a description of first, second, etc. for the purpose of distinguishing technical features, it should not be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features or implying the sequence of the indicated technical features.
[0031] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.
[0032] With the rapid development of economic society, more and more high-rise buildings are built, in order to meet the demand of large power consumption and large transmission power, hoisting medium voltage cables are generally used in high-rise buildings. At present, the transformer is generally placed in the middle or high layer of the high-rise building, and the hoisting medium voltage cable is directly sent into the corresponding floor inside the high-rise building. In this case, the hoisting medium voltage cable is mostly vertically laid and bears large longitudinal tension, so the hoisting tension requirement is high, and the current hoisting medium voltage cable is difficult to meet the requirement.
[0033] Therefore, the present application provides a hoisting medium voltage cable 1000, which is specifically shown in the accompanying drawings of the specification. Figures 1 to 2
[0034] Referring to Figure 1 As shown, the hoisting medium-voltage cable 1000 of the embodiment of the utility model, including cable 100, filling layer 200, first gasket layer 300, isolating sleeve 400, armored layer 500 and outer sheath 600. Among them, cable 100 is equipped with multiple strands. It needs to be explained that multiple strands cable 100 is stranded. It can be understood that through the above setting, the anti-interference ability of multiple strands cable 100 can be improved, and external electromagnetic interference can be better resisted, and signal loss is reduced. At the same time, the mechanical properties and heat dissipation properties of multiple strands cable 100 can also be improved.
[0035] Referring to Figure 1 As shown, it needs to be explained that filling layer 200 includes flexible steel wire rope 210 and polypropylene rope 220. Among them, flexible steel wire rope 210 has high flexibility, tensile strength, fatigue resistance and corrosion resistance. And polypropylene rope 220 is a rope made of polypropylene fiber, which is usually produced by using polypropylene with a density of less than 1 as raw material, and has good flexibility, tensile strength and corrosion resistance. According to different needs, polypropylene rope 220 can be woven into three strands, six strands, eight strands, twelve strands and other types.
[0036] Referring to Figure 1 As shown, it needs to be explained that flexible steel wire rope 210, polypropylene rope 220 and multiple strands cable 100 are stranded. It can be understood that through the above setting, since the flexibility and tensile strength of flexible steel wire rope 210 and polypropylene rope 220 are relatively high, by the way of stranding flexible steel wire rope 210, polypropylene rope 220 and multiple strands cable 100, the flexibility and tensile strength of hoisting medium-voltage cable 1000 can be effectively enhanced, so that hoisting medium-voltage cable 1000 can meet the higher hoisting tension requirement.
[0037] In an embodiment, flexible steel wire rope 210 is 6x19+IWS flexible steel wire rope. It needs to be explained that the structure of this steel wire rope is 6 strands, and each strand has 19 steel wires, and usually adopts bright surface or galvanized treatment. The main feature of 6x19+IWS flexible steel wire rope is that it has high carrying capacity and wear resistance, which is suitable for use in various complex environments, and can make hoisting medium-voltage cable 1000 meet the higher hoisting tension requirement.
[0038] Referring to Figure 1 As shown, it needs to be explained that the number of flexible steel wire rope 210 is a, and the number of polypropylene rope 220 is b. In an embodiment, it satisfies: a:b=2:1. That is to say, in this embodiment, the number of flexible steel wire rope 210 is twice the number of polypropylene rope 220. It can be understood that through the above setting, the number ratio of flexible steel wire rope 210 and polypropylene rope 220 is reasonable, which can meet the hoisting tension requirement of hoisting medium-voltage cable 1000 under corresponding conditions.
[0039] It should be noted that the ratio between the number a of flexible steel wires 210 and the number b of polypropylene ropes 220 is set according to specific circumstances, which is not specifically limited here. For example, in another embodiment, the number a of flexible steel wires 210 and the number b of polypropylene ropes 220 satisfy: a:b = 1:1. In another embodiment, the number a of flexible steel wires 210 and the number b of polypropylene ropes 220 satisfy: a:b = 3:1. In another embodiment, the number a of flexible steel wires 210 and the number b of polypropylene ropes 220 satisfy: a:b = 1:2.
[0040] Referring to Figure 1 As shown in the utility model, the hoisting medium-voltage cable 1000 of one embodiment of the utility model, the first gasket layer 300 is arranged on the outer circumferential side of the flexible steel wire 210, the polypropylene rope 220 and the multi-strand cable 100. It can be understood that after the flexible steel wire 210, the polypropylene rope 220 and the multi-strand cable 100 are twisted into a whole, the first gasket layer 300 is needed to be tightly wrapped and fastened.
[0041] In one embodiment, the first gasket layer 300 is made of two layers of non-woven fabric overlapping and covering each other. It should be noted that non-woven fabric has many advantages, such as flexibility, light weight, non-combustibility, etc. It is an ideal material for the first gasket layer 300, which can effectively play a fastening role, and the fastening effect is further enhanced due to the use of two layers of non-woven fabric.
[0042] In addition, it should also be noted that overlapping and covering wrapping means that the cable surface is continuously wrapped with multiple layers of tape, and there is a certain lap rate between each layer. It can be understood that through the above setting, the two layers of non-woven fabric can be fully wrapped on the outer surface of the cable body twisted by the flexible steel wire 210, the polypropylene rope 220 and the multi-strand cable 100, greatly enhancing the fastening effect, and also playing a role in smoothing the surface, facilitating the processing and production of the outer structure.
[0043] Referring to Figure 1 As shown in the utility model, the hoisting medium-voltage cable 1000 of one embodiment of the utility model, the isolation sleeve 400 is arranged on the outer circumferential side of the first gasket layer 300. It can be understood that the isolation sleeve 400 plays a role in protecting the internal structure of the hoisting medium-voltage cable 1000. In one embodiment, the isolation sleeve 400 is made of flame-retardant low-smoke halogen-free material or flame-retardant polyvinyl chloride material.
[0044] It should be noted that the flame-retardant low-smoke halogen-free material is an environmentally friendly material that does not produce toxic smoke and corrosive gas during combustion. The isolating sleeve 400 made of flame-retardant low-smoke halogen-free material not only has good isolation and protection effect, but also avoids the production of toxic and harmful gases during combustion in the event of a fire accident, and is more environmentally friendly. It should be noted that the flame-retardant polyvinyl chloride material is a plastic material that improves its fire resistance during combustion by adding a specific flame retardant. The isolating sleeve 400 made of flame-retardant polyvinyl chloride material not only has good isolation and protection effect, but also has good flame-retardant effect.
[0045] Referring to Figure 1 The utility model discloses a kind of hoisting medium-voltage cables 1000, armored layer 500 is located at the outer circumferential side of isolating sleeve 400, as shown in the drawing. It can be understood that armored layer 500 can play a protective role, and at the same time, significantly improve the tensile strength and compressive strength of hoisting medium-voltage cable 1000. Continue to refer to Figure 1 As shown in the drawing, in an embodiment, armored layer 500 includes first layer body 510 and second layer body 520. Wherein, first layer body 510 and second layer body 520 are arranged in turn along the direction away from isolating sleeve 400. That is to say, isolating sleeve 400 is located at the inner circumferential side of first layer body 510, and second layer body 520 is located at the outer circumferential side of first layer body 510.
[0046] Referring to Figure 1 As shown in the drawing, in an embodiment, first layer body 510 is formed by galvanized steel wire spiral winding, and second layer body 520 is also formed by galvanized steel wire spiral winding. It should be noted that the spiral winding direction of galvanized steel wire of first layer body 510 is opposite to the spiral winding direction of galvanized steel wire of second layer body 520. For example, the galvanized steel wire of first layer body 510 spirally winds to the right, and the galvanized steel wire of second layer body 520 spirally winds to the left. For another example, the galvanized steel wire of first layer body 510 spirally winds to the left, and the galvanized steel wire of second layer body 520 spirally winds to the right.
[0047] In an embodiment, armored layer 500 also includes galvanized steel belt. Wherein, galvanized steel belt is spirally wound at the outer circumferential side of second layer body 520. It can be understood that through the above setting, the internal structure can be tightened, and the galvanized steel wire of armored layer 500 can be prevented from loosening, and the tensile strength of hoisting medium-voltage cable 1000 can be further improved. In an embodiment, the spiral winding direction of galvanized steel belt is opposite to the spiral winding direction of galvanized steel wire of second layer body 520. It can be understood that through the above setting, galvanized steel belt can more stably fasten the internal structure, and at the same time, effectively improve the tensile strength of hoisting medium-voltage cable 1000, so that hoisting medium-voltage cable 1000 can meet higher hoisting tension requirements.
[0048] Referring to Figure 1As shown in the drawings, the hoisting medium-voltage cable 1000 of one embodiment of the present application is provided with the outer sheath 600 on the outer circumferential side of the armored layer 500. It can be understood that the outer sheath 600 mainly plays a protective role for the whole hoisting medium-voltage cable 1000. In one embodiment, the outer sheath 600 is made of high-flame-retardant low-smoke halogen-free material or high-flame-retardant polyvinyl chloride material. Referring to the above description of the isolation sleeve 400, the outer sheath 600 has higher flame-retardant requirements. In other aspects, when the outer sheath 600 is made of high-flame-retardant polyvinyl chloride material, it can play a good protective role; when the outer sheath 600 is made of high-flame-retardant low-smoke halogen-free material, it can play a good protective role while being more environmentally friendly.
[0049] Referring to Figure 1 As shown in the drawings, the hoisting medium-voltage cable 1000 of one embodiment of the present application further comprises a second gasket layer 700, which is arranged between the outer circumferential side of the armored layer 500 and the inner circumferential side of the outer sheath 600. It can be understood that the second gasket layer 700 can play a role in flattening the outer surface of the armored layer 500 to facilitate the production of the outer sheath 600. It should be noted that the second gasket layer 700 is wrapped with two layers of non-woven fabric. Among them, in one embodiment, the second gasket layer 700 is wrapped with two layers of non-woven fabric overlapping and covering; in another embodiment, the second gasket layer 700 is wrapped with two layers of non-woven fabric with gaps.
[0050] Referring to Figure 1 and Figure 1 Figure 2 As shown in the drawings, the hoisting medium-voltage cable 1000 of one embodiment of the present application comprises a conductor 110, a conductor shielding layer 120, an insulation layer 130, an insulation shielding layer 140, and a metal shielding layer 150. Among them, the conductor shielding layer 120 is arranged on the outer circumferential side of the conductor 110, the insulation layer 130 is arranged on the outer circumferential side of the conductor shielding layer 120, the insulation shielding layer 140 is arranged on the outer circumferential side of the insulation layer 130, and the metal shielding layer 150 is arranged on the outer circumferential side of the insulation shielding layer 140. It should be noted that the conductor shielding layer 120 is made of cross-linked semi-conductive polyolefin material, the insulation layer 130 is made of cross-linked polyethylene material, the insulation shielding layer 140 is made of cross-linked semi-conductive polyolefin material, and the metal shielding layer 150 is made of copper strip or copper wire.
[0051] The utility model embodiment makes the detailed explanation in combination with the drawing, finally should be explained: above each embodiment is only to illustrate the technical scheme of the utility model, and is not to its limitation, although the utility model has carried out the detailed explanation to the foregoing each embodiment, the ordinary skilled in the art should understand: it still can modify the technical scheme recorded in foregoing each embodiment, or to equivalent replacement of part or whole technical feature among them, and these modifications or replacement, do not make the essence of corresponding technical scheme deviate from the scope of each embodiment technical scheme of the utility model.
Claims
1. Hoisting medium voltage cable, characterized in that, include: Cable, having multiple strands; A filling layer comprising a flexible steel wire rope and a polypropylene rope, wherein the flexible steel wire rope, the polypropylene rope and a plurality of strands of the cable are hinged together; a first cushion layer, disposed around the outer periphery of the flexible steel wire rope, the polypropylene rope, and the plurality of strands of the cable; an isolation sleeve, provided on the outer peripheral side of the first liner layer; An armor layer is provided on the outer peripheral side of the isolation sleeve; The outer sheath is arranged on the outer peripheral side of the armor layer.
2. The medium voltage cable hoisting device according to claim 1, characterized in that: The flexible steel wire rope is an IWS flexible steel wire rope.
3. The medium voltage cable hoisting device according to claim 1, characterized in that: The number of the flexible steel wire ropes is a, and the number of the polypropylene ropes is b, satisfying: a:b=2:
1.
4. The medium voltage cable hoisting device according to claim 1, characterized in that: The armor layer includes a first layer body and a second layer body, and the first layer body and the second layer body are arranged in sequence in a direction away from the isolation sleeve.
5. The medium voltage cable hoisting device according to claim 4, characterized in that: The first layer and the second layer are both formed by spirally winding galvanized steel wires, and the spiral winding directions of the galvanized steel wires in the first layer and the second layer are opposite.
6. The medium voltage cable hoisting device according to claim 5, characterized in that: The armor layer further includes a galvanized steel strip, which is spirally wound around the outer circumference of the second layer.
7. The medium voltage cable hoisting device according to claim 6, characterized in that: The galvanized steel strip and the galvanized steel wire of the second layer are spirally wound in opposite directions.
8. The medium voltage cable hoisting device according to claim 1, characterized in that: The invention further includes a second lining layer, wherein the second lining layer is provided between the outer circumference of the armor layer and the inner circumference of the outer jacket.
9. The medium voltage cable hoisting device according to claim 1, characterized in that: The isolation sleeve is made of flame-retardant low-smoke halogen-free material or flame-retardant polyvinyl chloride material.
10. The medium voltage cable hoisting device according to claim 1, characterized in that: The outer sheath is made of highly flame-retardant low-smoke halogen-free material or highly flame-retardant polyvinyl chloride material.