CN115985566A - Anti-electricity tree medium-voltage cross-linking flame-retardant power cable - Google Patents
Anti-electricity tree medium-voltage cross-linking flame-retardant power cable Download PDFInfo
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- CN115985566A CN115985566A CN202310250464.7A CN202310250464A CN115985566A CN 115985566 A CN115985566 A CN 115985566A CN 202310250464 A CN202310250464 A CN 202310250464A CN 115985566 A CN115985566 A CN 115985566A
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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Abstract
The invention discloses an electricity-tree-resistant medium-voltage cross-linking flame-retardant power cable, which relates to the technical field of cables, wherein support frames are uniformly sleeved on the outer side of an outer shielding layer, elastic rubber is sleeved on the outer side of the outer shielding layer, the elastic rubber is positioned between every two adjacent support frames, an installation opening is formed in the middle of the outer side of the elastic rubber in a penetrating manner, an installation groove is formed in the outer side of each support frame, through openings are formed in two sides of the installation groove in a penetrating manner, fixing lugs are embedded into the through openings and the fixing grooves, spring pieces are welded between the two adjacent fixing lugs on the two adjacent support frames, external pressure applied to the cable is primarily buffered through a heat-conducting silicon sheet, the residual external pressure extrudes the spring pieces, and the residual external pressure is absorbed and buffered by matching with the elastic rubber, so that the external pressure cannot act on a conductor, the conductor cannot generate mechanical stress, and the promotion effect of the mechanical stress on the growth of electric branches is avoided.
Description
Technical Field
The invention relates to the technical field of cables, in particular to an electricity tree-resistant medium-voltage crosslinking flame-retardant power cable.
Background
The electric branch is commonly called as an electric tree, the insulation of the cable is easy to cause aging damage in the operation process, the insulation is mainly characterized in that the insulation generates fine cracks due to the discharge inside the insulation, a fine channel is formed, the channel is hollow, carbon particle traces generated by the discharge are arranged on the wall of the tube and are tree-like in winter, the number of branches is small and clear, the electric branch can be observed from a microscope and has tree-like defects such as air gaps, impurities or moisture in an insulation layer of the crosslinked polyethylene cable and uneven surface between a shielding layer and the insulation layer, partial discharge is generated under the action of an electric field, and the insulation aging and breakdown can be caused.
The compressive capacity of the existing medium-voltage cable is weak, when the conductor in the cable receives external pressure, the cable conductor can generate mechanical stress, the cable conductor containing the mechanical stress can shorten the initiation time of an electric tree branch, and the growth speed of the electric tree branch is accelerated, so that the compressive capacity is strong, the power cable capable of greatly reducing the external pressure is needed, and the generation of the electric tree branch phenomenon is reduced.
Disclosure of Invention
The invention provides an electric tree medium-voltage crosslinking flame-retardant power cable which can effectively solve the problems that in the prior art, the pressure resistance of the existing medium-voltage cable is weak, when a conductor in the cable is subjected to external pressure, the cable conductor can generate mechanical stress, and the cable conductor containing the mechanical stress can shorten the initiation time of electric tree branches and accelerate the growth speed of the electric tree branches.
In order to achieve the purpose, the invention provides the following technical scheme: the medium-voltage cross-linking flame-retardant power cable resisting the electric tree comprises a conductor, wherein an inner shielding layer wraps the outer side of the conductor, an insulating layer wraps the outer side of the inner shielding layer, an outer shielding layer wraps the outer side of the insulating layer, a compression-resistant assembly is arranged on the outer side of the outer shielding layer, and the compression-resistant assembly comprises a supporting frame;
the supporting frames are uniformly sleeved on the outer sides of the outer shielding layers, elastic rubber is sleeved on the outer sides of the outer shielding layers, mounting grooves are formed in the outer sides of the supporting frames, through holes are formed in two sides of each mounting groove in a penetrating mode, fixing grooves are formed in two sides of the bottom surface of each mounting groove, clamping grooves are formed in two ends of the bottom surface of each mounting groove, fixing lugs are embedded into the through holes and the fixing grooves, and spring pieces are welded between two adjacent fixing lugs on two adjacent supporting frames;
the mounting groove is internally clamped with a fixing plate, the two ends of the bottom of the fixing plate are welded with clamping joints, sliding grooves are formed in the clamping joints, fixing heads are slidably mounted in the sliding grooves, and fixing springs are connected between one ends of the fixing heads and one sides of the sliding grooves.
According to the technical scheme, the elastic rubber is positioned between every two adjacent support frames, and the middle of the outer side of the elastic rubber is provided with a mounting opening in a penetrating manner;
the fixed plate top has been seted up the shifting chute, the shifting chute both ends communicate with the sliding tray, the inside embedding of shifting chute has the pull rod, pull rod bottom both ends and fixed head top interconnect.
According to the technical scheme, the conductor, the inner shielding layer, the insulating layer and the outer shielding layer are sequentially and tightly attached to each other, and the longitudinal section of the support frame is in an equilateral triangle shape.
According to the technical scheme, the inner side of the elastic rubber is tightly attached to the outer side of the outer shielding layer, and the longitudinal section of the elastic rubber is in an equilateral triangle shape;
fixing holes are formed in two sides of the inner portion of the clamping groove, and the cross section of each fixing lug is L-shaped.
According to the technical scheme, the inner wall of the sliding groove is tightly attached to the outer surface of the fixing head, and the contact surface between the sliding groove and the fixing head is a smooth surface.
According to the technical scheme, the cross section of the spring piece is wavy, and the outer side of the elastic rubber is attached to the inner side of the spring piece.
According to the technical scheme, a moisture-proof component is arranged on the outer side of the elastic rubber, and the moisture-proof component comprises a water suction pipe;
the support frame both sides weld in the pipe one end that absorbs water, the hole that absorbs water has evenly been seted up to the pipe surface that absorbs water, it rotates to install the end cap to absorb water the pipe other end, and every two are adjacent the joint has the sponge that absorbs water between the pipe that absorbs water on the support frame, the hole of inlaying has been seted up at the sponge both ends that absorb water, it imbeds inside the hole to absorb water the pipe.
According to the technical scheme, a cooling assembly is arranged on the outer side of the outer shielding layer and comprises a heat conducting rod;
the utility model discloses a heat conduction rubber, including support frame, outer shielding layer, heat conduction pole, screw sleeve, roating seat, loop bar, telescopic spring, support piece, connecting plate, silica gel layer, heat conduction pole position in support frame center and run through inside elastic rubber, fixed screw thread has evenly been seted up in the heat conduction pole outside, the fixed screw thread outside is rotated and is installed the screw thread cover, the welding of screw thread cover outside has the roating seat, the loop bar is installed in the inside rotation of roating seat, loop bar outside slidable mounting has the sleeve, be connected with expanding spring between loop bar and the sleeve, the welding of sleeve top has the backing sheet, inside loop bar and sleeve run through the installing port, the connecting plate is installed to the support frame inboard, the welding of the connecting plate outside has the heat conduction piece, support frame outside parcel has fire-retardant layer, fire-retardant layer parcel has the sheath, the embedding has the heat conduction piece between spring piece and the fire-retardant silica gel layer.
According to the technical scheme, the outer side of the heat conducting rod is tightly attached to one end of the heat conducting fin, and heat conducting silicone grease is coated between the connecting plate and the supporting frame.
According to the technical scheme, the outer wall of the loop bar and the inner wall of the sleeve are smooth curved surfaces, and the outer wall of the loop bar is tightly attached to the inner wall of the sleeve.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:
1. be provided with the resistance to compression subassembly, the support frame can strengthen cable self intensity, and can carry out the separation with ambient pressure and conductor, apply the ambient pressure on the cable, earlier carry out preliminary buffering through heat conduction silica gel piece, surplus ambient pressure extrusion spring leaf, the spring leaf is buckled, cooperation elastic rubber absorbs the buffering to surplus ambient pressure, make ambient pressure unable act on the conductor, make the conductor can not produce mechanical stress, avoid mechanical stress to the promotion effect that the electric branch grows, and every spring leaf is independent installation, utilize the mutual joint between the part, make the installation dismantle convenient and fast more.
2. Be provided with dampproofing subassembly, utilize the hydroscopicity of the sponge that absorbs water, absorb the inside moisture of cable, the inside water absorbent of having placed of pipe that absorbs water, the composition of water absorbent is polyacrylate type super absorbent resin, and moisture passes the hole that absorbs water, enters into in the pipe that absorbs water, and the water absorbent absorbs moisture, and the sponge that absorbs water is absorbed in the cooperation, makes the effect of absorbing water better, and the end cap is connected through the screw thread with the pipe that absorbs water, makes things convenient for placing, convenient and fast of water absorbent.
3. Be provided with the cooling subassembly, the heat conduction that the conductor produced is on the heat conduction pole, conduct to the heat conduction silica gel piece through conducting strip and support frame, the heat on the heat conduction pole is conducted to backing sheet and spring leaf through the thread bush again, the spring leaf closely laminates with the heat conduction silica gel piece again, the heat that final conductor produced distributes out from the sheath under the conduction effect of heat conduction silica gel piece, utilize good heat conduction material and increase heat dissipation way and area, make the inside temperature of cable reduce fast, reduce the electric tree initiation rate.
To sum up, the resistance to compression subassembly is mutually supported with the cooling subassembly, greatly reduced the incidence of electric tree branch phenomenon, makes the life of cable increase by a wide margin, and dampproofing subassembly can be with moisture absorption, avoids moisture to enter into between conductor and the insulating layer, avoids the production of water tree branch phenomenon.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view of a cable of the present invention;
FIG. 3 is a schematic view of the spring plate mounting structure of the present invention;
fig. 4 is a schematic view of a mounting structure of the support sheet of the present invention;
FIG. 5 is a schematic view showing the mounting structure of the elastic rubber of the present invention;
FIG. 6 is a schematic view of the cooling assembly of the present invention;
FIG. 7 is a schematic view of the mounting structure of the sleeve of the present invention;
FIG. 8 is a schematic view showing an installation structure of the heat conductive sheet of the present invention;
FIG. 9 is a schematic view of the structure of the snap groove of the present invention;
FIG. 10 is a schematic view of the mounting structure of the retaining head of the present invention;
reference numbers in the figures: 1. a conductor; 2. an inner shield layer; 3. an insulating layer; 4. an outer shield layer; 8. a flame retardant layer; 9. a sheath;
5. a cooling assembly; 501. a heat conducting rod; 502. fixing threads; 503. a threaded sleeve; 504. a rotating base; 505. a loop bar; 506. a sleeve; 507. a tension spring; 508. a support sheet; 509. a connecting plate; 510. a heat conductive sheet; 511. a heat-conducting silica gel sheet;
6. a compression resistant assembly; 601. a support frame; 602. an elastic rubber; 603. an installation port; 604. mounting grooves; 605. a through opening; 606. fixing grooves; 607. a clamping groove; 608. a spring plate; 609. fixing the lug; 610. a fixing plate; 611. a clamping head; 612. a sliding groove; 613. a fixed head; 614. fixing the spring; 615. a pull rod; 616. a moving groove;
7. a moisture barrier component; 701. a suction pipe; 702. a water suction hole; 703. a plug; 704. a water-absorbing sponge; 705. an insertion hole.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1-10, the invention provides a technical scheme of an electricity tree medium-voltage cross-linking flame-retardant power cable, which comprises a conductor 1, wherein an inner shielding layer 2 wraps the outer side of the conductor 1, an insulating layer 3 wraps the outer side of the inner shielding layer 2, an outer shielding layer 4 wraps the outer side of the insulating layer 3, the conductor 1, the inner shielding layer 2, the insulating layer 3 and the outer shielding layer 4 are sequentially and tightly attached, gaps among the layers are reduced, impurities such as external metal powder and the like are prevented from entering the gap between the insulating layer 3 and the conductor 1, the insulating layer 3 is prevented from being broken down due to dendritic aging caused by local discharge caused by excessively high concentrated field intensity in the insulating layer 3, and a pressure-resistant assembly 6 is arranged on the outer side of the outer shielding layer 4;
the pressure-resistant assembly 6 comprises a supporting frame 601, an elastic rubber 602, a mounting opening 603, a mounting groove 604, a through opening 605, a fixing groove 606, a clamping groove 607, a spring piece 608, a fixing lug 609, a fixing plate 610, a clamping head 611, a sliding groove 612, a fixing head 613, a pull rod 615 and a moving groove 616;
the outer side of the outer shielding layer 4 is uniformly sleeved with a support frame 601, the longitudinal section of the support frame 601 is in an equilateral triangle shape, so that the pressure resistance of the support frame 601 is stronger, the outer side of the outer shielding layer 4 is sleeved with an elastic rubber 602, the inner side of the elastic rubber 602 is tightly attached to the outer side of the outer shielding layer 4, so that the stability of the elastic rubber 602 is higher, the elastic rubber 602 is prevented from shaking in the cable, the longitudinal section of the elastic rubber 602 is in an equilateral triangle shape, the elastic rubber 602 is positioned between every two adjacent support frames 601, the middle of the outer side of the elastic rubber 602 is provided with a mounting opening 603 in a penetrating manner, the outer side of the support frame 601 is provided with a mounting groove 604, two sides of the mounting groove 604 are provided with through openings 605 in a penetrating manner, two sides of the bottom surface of the mounting groove 604 are provided with fixing grooves 606, fixing lugs 609 are embedded in the through openings 605 and the fixing grooves 606, and the cross section of the fixing lugs 609 are in an L shape, the fixing lugs 609 are fixed more stably, a spring piece 608 is welded between two adjacent fixing lugs 609 on two adjacent support frames 601, the cross section of the spring piece 608 is wave-shaped, the outer side of the elastic rubber 602 is attached to the inner side of the spring piece 608, when the spring piece 608 is bent by external pressure, the external pressure can be absorbed and buffered by matching with the elastic rubber 602, the conductor 1 is prevented from bearing external pressure, a fixing plate 610 is clamped inside the action installation groove 604, clamping joints 611 are welded at two ends of the bottom of the fixing plate 610, a sliding groove 612 is arranged inside the clamping joint 611, a fixing head 613 is slidably arranged inside the sliding groove 612, a fixing spring 614 is connected between one end of the fixing head 613 and one side of the sliding groove 612, fixing holes are arranged at two sides inside the clamping groove 607, the fixing head 613 can be embedded into the fixing holes, so that the fixing plate 610 can be fixed in the installation groove 604, the inner wall of the sliding groove 612 is tightly attached to the outer surface of the fixing head 613, the contact surfaces between the sliding groove 612 and the fixing head 613 are smooth surfaces, the relative friction between the sliding groove 612 and the fixing head 613 is reduced, so that the fixing head 613 can smoothly move in the sliding groove 612, the top of the fixing plate 610 is provided with a moving groove 616, two ends of the moving groove 616 are communicated with the sliding groove 612, a pull rod 615 is embedded in the moving groove 616, and two ends of the bottom of the pull rod 615 are mutually connected with the top of the fixing head 613;
the moisture-proof component 7 is arranged outside the elastic rubber 602;
the moisture-proof component 7 comprises a suction pipe 701, a suction hole 702, a plug 703, a suction sponge 704 and an embedding hole 705;
the two sides of each support frame 601 are welded at one end of a water suction pipe 701, water suction holes 702 are uniformly formed in the outer surface of the water suction pipe 701, a plug 703 is rotatably installed at the other end of the water suction pipe 701, a water suction sponge 704 is clamped between the water suction pipes 701 on every two adjacent support frames 601, two ends of each water suction sponge 704 are provided with embedding holes 705, and the water suction pipes 701 are embedded in the embedding holes 705;
a cooling component 5 is arranged outside the outer shielding layer 4;
the cooling assembly 5 comprises a heat conducting rod 501, a fixed thread 502, a thread sleeve 503, a rotating seat 504, a sleeve rod 505, a sleeve 506, a telescopic spring 507, a support sheet 508, a connecting plate 509, a heat conducting sheet 510 and a heat conducting silicon sheet 511;
the outer side of the outer shielding layer 4 is provided with a heat conducting rod 501, the heat conducting rod 501 is positioned at the center of the support frame 601 and penetrates through the elastic rubber 602, the outer side of the heat conducting rod 501 is uniformly provided with fixed threads 502, the outer side of the fixed threads 502 is rotatably provided with a threaded sleeve 503, the outer side of the threaded sleeve 503 is welded with a rotary seat 504, the inner side of the rotary seat 504 is rotatably provided with a sleeve rod 505, the outer side of the sleeve rod 505 is slidably provided with a sleeve 506, the outer wall of the sleeve rod 505 and the inner wall of the sleeve 506 are smooth curved surfaces, the relative friction force between the sleeve rod 505 and the sleeve 506 is reduced, so that the sleeve 506 can move on the sleeve rod 505 more smoothly, the outer wall of the sleeve rod 505 and the inner wall of the sleeve 506 are tightly attached, so that the heat on the heat conducting rod 501 can be rapidly conducted on the spring leaf 608 through the sleeve rod 505, the sleeve 506 and the support piece 508, strengthen the heat-sinking capability, be connected with expanding spring 507 between loop bar 505 and the sleeve 506, sleeve 506 top welding has backing sheet 508, loop bar 505 runs through installing port 603 with sleeve 506 inside, connecting plate 509 is installed to support frame 601 inboard, connecting plate 509 outside welding has conducting strip 510, the outside closely laminates with conducting strip 510 one end of conducting rod 501, heat conduction silicone grease has been paintd between connecting plate 509 and the support frame 601, the conduction that makes the inside heat of cable can be quick is on conducting strip 510 and support frame 601, accelerate the radiating rate, support frame 601 outside parcel has fire-retardant layer 8, fire-retardant layer 8 parcel has sheath 9, it has heat conduction silicone sheet 511 to embed between spring leaf 608 and the fire-retardant layer 8.
The working principle and the using process of the invention are as follows: when the cable sheath 9 is subjected to external pressure, the external pressure is transmitted on the support frame 601 and the heat-conducting silica gel sheet 511 through the sheath 9 and the flame-retardant layer 8, the flame-retardant layer 8 is made of a PVC material added with halogen flame-retardant, and has good flame-retardant performance, the support frame 601 plays a role in strengthening the self-strength of the cable, and can separate the external pressure from the conductor 1, the external pressure transmitted on the heat-conducting silica gel sheet 511 is primarily buffered through the heat-conducting silica gel sheet 511, the rest of the external pressure extrudes the spring sheet 608, the spring sheet 608 is bent, and the rest of the external pressure is absorbed and buffered by matching with the elastic rubber 602, so that the external pressure can not act on the conductor 1, and each spring sheet 608 of the cable is independently installed, thereby facilitating the production and maintenance of the cable, when the spring piece 608 is assembled, the L-shaped fixing lug 609 is embedded into the through opening 605 and the fixing groove 606, the clamping connector 611 on the fixing plate 610 is embedded into the clamping groove 607, the fixing head 613 is embedded into the fixing hole on one side of the clamping groove 607 under the action of the fixing spring 614, the fixing plate 610 is fixed in the mounting groove 604, the fixing lug 609 is fixed by the fixing plate 610 to prevent the spring piece 608 from being separated, when the cable is repaired, a damaged section of cable is taken down and replaced by a new section of cable, when the damaged cable is treated, the cable sheath 9 and the flame retardant layer 8 are peeled off, the pull rod 615 in the moving groove 616 is pulled, the fixing spring 614 is contracted, the clamping connector 611 is moved out of the clamping groove 607, the spring piece 608 and the fixing plate 610 are taken down, and the components such as the spring piece 608 and the like are recycled;
be provided with dampproofing subassembly 7, if the cable is outside damaged, utilize the hydroscopicity of sponge 704 that absorbs water, can absorb the inside moisture of cable, the inside water absorbent of having placed of pipe 701 that absorbs water, the composition of water absorbent is polyacrylate type super absorbent resin, moisture passes water absorption hole 702, enter into in the pipe 701 that absorbs water, the water absorbent absorbs moisture, sponge 704 that the cooperation absorbs water makes dehumidification effect better, end cap 703 and pipe 701 that absorbs water are connected through the screw thread, make things convenient for placing and the replacement of water absorbent, convenient and fast.
The medium voltage cable is provided with a cooling component 5, the support frame 601, the heat conducting rod 501, the threaded sleeve 503, the rotary seat 504, the loop bar 505, the sleeve 506 and the support sheet 508 are made of copper-aluminum alloy, the copper-aluminum alloy enables heat to be conducted rapidly, the heat generated by the conductor 1 is conducted on the heat conducting rod 501, conducted on the support frame 601 through the heat conducting sheet 510 and the connecting plate 509, and then conducted on the heat conducting silicone sheet 511 through the support frame 601, the support sheet 508 enables the support sheet 508 to be attached to the inner side of the spring sheet 608 in real time under the action of the expansion spring 507, the heat generated by the heat conducting rod 501 is conducted on the spring sheet 608 through the threaded sleeve 503, the rotary seat 504, the loop bar 505, the sleeve 506 and the support sheet 508 sequentially, the spring sheet 608 is tightly attached to the heat conducting silicone sheet 511, and finally the heat generated by the conductor 1 is radiated from the sheath 9 under the conduction action of the heat conducting silicone sheet 511, and the temperature inside the cable is rapidly cooled by utilizing excellent heat conducting materials, and the electrical tree branch initiation rate is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The power cable comprises a conductor (1), wherein an inner shielding layer (2) wraps the outer side of the conductor (1), an insulating layer (3) wraps the outer side of the inner shielding layer (2), and an outer shielding layer (4) wraps the outer side of the insulating layer (3), and is characterized in that a pressure-resistant assembly (6) is arranged on the outer side of the outer shielding layer (4), and the pressure-resistant assembly (6) comprises a support frame (601);
the outer side of the outer shielding layer (4) is uniformly sleeved with a supporting frame (601), the outer side of the outer shielding layer (4) is sleeved with elastic rubber (602), the outer side of the supporting frame (601) is provided with a mounting groove (604), two sides of the mounting groove (604) are penetrated and provided with a through hole (605), two sides of the bottom surface of the mounting groove (604) are provided with fixing grooves (606), two ends of the bottom surface of the mounting groove (604) are provided with clamping grooves (607), fixing lugs (609) are embedded into the through hole (605) and the fixing grooves (606), and a spring piece (608) is welded between two adjacent fixing lugs (609) on two adjacent supporting frames (601);
the inside joint of mounting groove (604) has fixed plate (610), fixed plate (610) bottom both ends welding has joint (611), inside sliding tray (612) of having seted up of joint (611), inside slidable mounting of sliding tray (612) has fixed head (613), be connected with between fixed head (613) one end and sliding tray (612) one side fixed spring (614).
2. The power cable of claim 1, wherein the elastic rubber (602) is positioned between every two adjacent supporting frames (601), and a mounting opening (603) is formed in the middle of the outer side of the elastic rubber (602) in a penetrating manner;
the top of the fixing plate (610) is provided with a moving groove (616), two ends of the moving groove (616) are communicated with the sliding groove (612), a pull rod (615) is embedded in the moving groove (616), and two ends of the bottom of the pull rod (615) are connected with the top of the fixing head (613) mutually.
3. The medium-voltage cross-linking flame-retardant power cable of claim 1, wherein the conductor (1), the inner shielding layer (2), the insulating layer (3) and the outer shielding layer (4) are sequentially and tightly attached to each other, and the longitudinal section of the support frame (601) is in the shape of an equilateral triangle.
4. The electrical tree-resistant medium-voltage cross-linking flame-retardant power cable according to claim 2, wherein the inner side of the elastic rubber (602) is closely attached to the outer side of the outer shielding layer (4), and the longitudinal section of the elastic rubber (602) is in the shape of an equilateral triangle;
fixing holes are formed in two sides of the interior of the clamping groove (607), and the cross section of each fixing lug (609) is L-shaped.
5. The electrical tree-resistant medium-voltage crosslinked flame-retardant power cable according to claim 2, wherein the inner wall of the sliding groove (612) is tightly attached to the outer surface of the fixing head (613), and the contact surface between the sliding groove (612) and the fixing head (613) is smooth.
6. The electrical cable as claimed in claim 2, wherein the spring sheet (608) has a wave-shaped cross-section, and the outer side of the elastic rubber (602) is attached to the inner side of the spring sheet (608).
7. The cable of claim 2, wherein a moisture-proof component (7) is disposed outside the elastic rubber (602), and the moisture-proof component (7) comprises a water suction pipe (701);
support frame (601) both sides weld in pipe (701) one end that absorbs water, absorb water hole (702) have evenly been seted up to pipe (701) surface, absorb water pipe (701) other end rotates and installs end cap (703), and every two are adjacent the joint has sponge (704) that absorb water between pipe (701) that absorb water on support frame (601), sponge (704) that absorb water both ends have been seted up and have been inlayed hole (705), it is inside in inlaying hole (705) to absorb water pipe (701) embedding.
8. The electrical tree-resistant medium-voltage crosslinking flame-retardant power cable according to claim 2, wherein a temperature reduction component (5) is arranged outside the outer shielding layer (4), and the temperature reduction component (5) comprises a heat conducting rod (501);
the heat conduction rod (501) is installed in the outer shielding layer (4) outside, heat conduction rod (501) are located support frame (601) center and run through inside elastic rubber (602), fixed screw thread (502) have evenly been seted up in heat conduction rod (501) outside, fixed screw thread (502) outside is rotated and is installed thread bush (503), thread bush (503) outside welding has roating seat (504), loop bar (505) are installed in roating seat (504) internal rotation, loop bar (505) outside slidable mounting has sleeve (506), be connected with expanding spring (507) between loop bar (505) and sleeve (506), sleeve (506) top welding has support chip (support chip 508), loop bar (505) and sleeve (506) run through installing port (603) inside, connecting plate (509) are installed to support frame (601) inboard, connecting plate (509) outside welding has heat conduction chip (510), support frame (601) outside parcel has fire-retardant layer (8), fire-retardant layer (8) parcel has sheath (9), it has heat conduction film (511) to embed between fire-retardant spring leaf (608) and fire-retardant layer (8).
9. The electrical tree-resistant medium-voltage crosslinking flame-retardant power cable according to claim 8, wherein the outer side of the heat conducting rod (501) is closely attached to one end of the heat conducting fin (510), and heat conducting silicone grease is coated between the connecting plate (509) and the supporting frame (601).
10. The electrical tree-resistant medium-voltage cross-linking flame-retardant power cable according to claim 8, wherein the outer wall of the loop bar (505) and the inner wall of the sleeve (506) are smooth curved surfaces, and the outer wall of the loop bar (505) and the inner wall of the sleeve (506) are tightly attached.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310250464.7A CN115985566B (en) | 2023-03-16 | 2023-03-16 | Medium-voltage cross-linked flame-retardant power cable for anti-electricity tree |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310250464.7A CN115985566B (en) | 2023-03-16 | 2023-03-16 | Medium-voltage cross-linked flame-retardant power cable for anti-electricity tree |
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| CN115985566B CN115985566B (en) | 2023-05-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117095861A (en) * | 2023-10-16 | 2023-11-21 | 金泰电缆有限公司 | Flexible multi-core aluminum alloy cable |
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| CN217214271U (en) * | 2022-03-31 | 2022-08-16 | 武汉宝上电缆有限公司 | Aluminum alloy conductor crosslinked polyethylene insulation interlocking armored low-voltage power cable |
| CN218092338U (en) * | 2022-07-07 | 2022-12-20 | 湖北钢鼎高新建材有限公司 | Concrete pole layering protector |
| CN218274044U (en) * | 2022-07-26 | 2023-01-10 | 金堡利升科技(深圳)有限公司 | High flame-retardant insulated wire and cable |
| CN115662693A (en) * | 2022-09-08 | 2023-01-31 | 况永江 | Stretch-proofing type communication cable |
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| CN213400681U (en) * | 2020-11-17 | 2021-06-08 | 郑州宝诺电子科技有限公司 | Low-smoke halogen-free flame-retardant cable |
| CN217214271U (en) * | 2022-03-31 | 2022-08-16 | 武汉宝上电缆有限公司 | Aluminum alloy conductor crosslinked polyethylene insulation interlocking armored low-voltage power cable |
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| CN115662693A (en) * | 2022-09-08 | 2023-01-31 | 况永江 | Stretch-proofing type communication cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117095861A (en) * | 2023-10-16 | 2023-11-21 | 金泰电缆有限公司 | Flexible multi-core aluminum alloy cable |
| CN117095861B (en) * | 2023-10-16 | 2023-12-26 | 金泰电缆有限公司 | Flexible multi-core aluminum alloy cable |
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