CN215183133U - New construction light fire-retardant copper core polyvinyl chloride insulated cable - Google Patents
New construction light fire-retardant copper core polyvinyl chloride insulated cable Download PDFInfo
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- CN215183133U CN215183133U CN202121337678.0U CN202121337678U CN215183133U CN 215183133 U CN215183133 U CN 215183133U CN 202121337678 U CN202121337678 U CN 202121337678U CN 215183133 U CN215183133 U CN 215183133U
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Abstract
The utility model provides a light flame-retardant copper core polyvinyl chloride insulated cable with a new structure, belonging to the technical field of cables, aiming at solving the problems that the existing copper core polyvinyl chloride insulated cable has single structure function, is easy to deform when being extruded by strong external extrusion, leads to the internal structure of the cable to be broken, influences the electric power transmission, and generally lacks reasonable blocking structure when the cable is in fire, and can not quickly and effectively cut off the flame spread, and comprises an inner core; the inner cores are distributed in a ring array mode at three positions, and fillers are arranged among the three inner cores. The utility model discloses when meetting the conflagration and taking place, the inside intumescent fire retardant of gas cell is heated and expands rapidly, outwards extrudees the endotheca and makes its fracture, and the connecting rod breaks away from the endotheca from this, utilizes compression spring and the elastic action of arc shell fragment itself, and the cable polyvinyl chloride pipe wall that is heated and softens is propped up to the outward expansion, cuts off the burning approach in shorter time, and the effectual flame that prevents spreads.
Description
Technical Field
The utility model belongs to the technical field of the cable, more specifically say, in particular to fire-retardant copper core polyvinyl chloride insulated cable of new construction light.
Background
The polyvinyl chloride insulated cable products include products such as a non-sheathed cable for fixed wiring, a light non-sheathed flexible cable, a sheathed flexible cable for general use, a wire and a shielded wire for installation, a sheathed flexible cable for special use, a polyvinyl chloride insulated flame-retardant/fire-resistant cable and the like.
As in application No.: CN 202021439286.0's utility model discloses an insulating fire-retardant fire resisting cable of copper core polyvinyl chloride, it includes oversheath, fire-retardant cover, insulating cover, protective sheath, cable sleeve, sponge stopping, electric wire mount, copper core electric wire, the cable sleeve's the outside is provided with the protective sheath, the outside of protective sheath is provided with the insulating cover, the outside of insulating cover is provided with fire-retardant cover, the outside of fire-retardant cover is provided with the oversheath, the equidistant electric wire mount that is provided with in cable sleeve's inside, it has the sponge stopping to fill between the electric wire mount, the copper core electric wire is installed on the electric wire mount, the telescopic surface of cable and internal surface are provided with first arch, second arch respectively, first arch, the protruding crisscross setting of second. The utility model discloses the electric wire can not twine each other, rubs, avoids the damage, and fire resistance is good, and fire resistance is excellent.
Current copper core polyvinyl chloride insulated cable structure function singleness receives outside strong extrusion to take place deformation easily, leads to cable inner structure fracture, influences power transmission, and cable is often when the conflagration breaing out in addition, lacks reasonable structure of blocking, can't effectively cut off flame and stretch fast.
Therefore, in view of the above, research and improvement are made for the existing structure and defects, and a light flame-retardant copper-core polyvinyl chloride insulated cable with a new structure is provided, so as to achieve the purpose of higher practical value.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a fire-retardant copper core polyvinyl chloride insulated cable of new construction light to solve current copper core polyvinyl chloride insulated cable structure function singleness, receive outside strong extrusion to take place deformation easily when the cable, lead to the cable inner structure fracture, influence electric power transmission, cable is when the conflagration breaing out usually moreover, lacks the reasonable structure that blocks, can't effectively cut off the problem that flame stretchs fast.
The utility model relates to a purpose and efficiency of fire-retardant copper core polyvinyl chloride insulated cable of new construction light are reached by following concrete technological means:
a new structure light flame-retardant copper core polyvinyl chloride insulated cable comprises an inner core;
the inner cores are distributed in a ring array mode at three positions, and fillers are arranged among the three inner cores;
the filler and the outer parts of the three inner cores are wrapped with inner liners, metal armoring sleeves are sleeved outside the inner liners, and outer sheaths are wrapped outside the metal armoring sleeves;
the filler is internally provided with three arc-shaped elastic sheets at intervals, the three arc-shaped elastic sheets are distributed in an annular array mode, an inner sleeve is arranged between the three arc-shaped elastic sheets, and the arc-shaped elastic sheets are connected with the inner liner through clamping plates;
and a clamping ring is arranged on the metal armor and is matched with the arc-shaped elastic sheet in position.
Further, the inner core includes copper core, conductor shielding layer, insulating layer and alloy lead cover, and the outside parcel of copper core has the conductor shielding layer, and the conductor shielding layer outside is equipped with the insulating layer to the outside cover of insulating layer is equipped with the alloy lead cover.
Further, metal armour cover includes first draw-in groove and connecting collar mouth, and the cylindricality that metal armour cover was kneaded by the steel wire through the extrusion and is formed leads to the chamber structure, and metal armour cover tip is equipped with the connecting collar mouth, and first draw-in groove has been seted up to metal armour cover outer peripheral face, and first draw-in groove is close to connecting collar mouth position.
Further, the snap ring comprises a connecting ring and a second clamping groove, the snap ring is of a two-position annular structure, the two snap rings are distributed in a symmetrical mode, the two snap rings are connected through the connecting ring, and the second clamping groove is formed in the inner peripheral surface of the connecting ring.
Furthermore, the first clamping groove is of an annular groove structure, the clamping ring is connected with the metal armor sleeve in a clamped mode through the first clamping groove, and the connecting sleeve opening is connected with the connecting ring in a clamped mode through the second clamping groove.
Further, the arc-shaped elastic piece comprises a connecting rod, a compression spring and a baffle ring, two connecting rods are arranged on the three arc-shaped elastic pieces, the two connecting rods are distributed in a parallel mode, the arc-shaped elastic piece is connected with the inner sleeve through the connecting rod, the compression spring is sleeved on the connecting rod, the baffle ring is arranged at the end part of the connecting rod, and the baffle ring is detachably connected with the connecting rod in an embedded mode.
Furthermore, the inner sleeve comprises an inflatable bag, the inner sleeve is of a through cavity structure with a hexagonal cross section and is formed by splicing PVC plates, the inflatable bag is arranged in the through cavity of the inner sleeve, an intumescent flame retardant is filled in the inflatable bag, the connecting rod penetrates through the inner sleeve, and the compression spring is supported between the side walls of the two opposite ends of the inner sleeve.
Further, the cardboard includes the mounting groove, and two mounting grooves have been seted up to the cardboard, and the arc shell fragment passes through the mounting groove and the cardboard looks joint.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. because insulating layer outside cover is equipped with alloy lead sleeve, and metal armour cover is the cylindricality that is kneaded through the extrusion by the steel wire and forms and leads to the chamber structure to increase the anti extrusion ability of cable, first draw-in groove is the annular groove structure simultaneously, and the snap ring passes through first draw-in groove and metal armour cover looks joint, and connect the cuff and pass through second draw-in groove and go-between looks joint, it is thus visible, metal armour cover and snap ring connection structure are simple, the manufacturing of being convenient for.
2. Because the inner sleeve is of a hexagonal-section through cavity structure and is formed by splicing PVC plates, the inner sleeve through cavity is internally provided with the inflatable bag, the inflatable bag is filled with the intumescent flame retardant, the connecting rod penetrates through the inner sleeve, and the compression spring is supported between the side walls of the two opposite ends of the inner sleeve, when a fire disaster happens, the intumescent flame retardant inside the inflatable bag is heated and rapidly expands, the inner sleeve is extruded outwards to be broken, the connecting rod is separated from the inner sleeve, the wall of the cable polyvinyl chloride pipe which is softened by heating is expanded outwards by utilizing the elastic action of the compression spring and the arc-shaped elastic sheet, the combustion path is cut off in a short time, and the flame spread is effectively prevented.
Drawings
Fig. 1 is a schematic axial view of the present invention.
Fig. 2 is a schematic view of the structure of fig. 1 with the outer sheath removed and a portion of the filler removed.
Fig. 3 is a schematic structural view of the metal armor and the snap ring in a separated state.
Fig. 4 is a schematic view of the structure of fig. 2 with the inner core and metal armor removed.
Fig. 5 is a schematic view of the structure of fig. 4 with the snap ring removed.
Fig. 6 is a schematic view of the exploded state shown in fig. 5.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. an inner core; 101. a copper core; 102. a conductor shield layer; 103. an insulating layer; 104. an alloy lead sleeve; 2. a filler; 3. an inner liner layer; 4. a metal armor; 401. a first card slot; 402. connecting a sleeve opening; 5. an outer sheath; 6. a snap ring; 601. a connecting ring; 602. a second card slot; 7. an arc-shaped elastic sheet; 701. a connecting rod; 702. a compression spring; 703. a baffle ring; 8. an inner sleeve; 801. an air-filled bag; 9. clamping a plate; 901. and (4) mounting the groove.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 6:
the utility model provides a new structure light flame-retardant copper core polyvinyl chloride insulated cable, which comprises an inner core 1;
the inner core 1 is distributed in three positions in an annular array mode, the inner core 1 comprises a copper core 101, a conductor shielding layer 102, an insulating layer 103 and an alloy lead sleeve 104, the conductor shielding layer 102 wraps the outer portion of the copper core 101, the insulating layer 103 is arranged on the outer portion of the conductor shielding layer 102, and the alloy lead sleeve 104 is sleeved on the outer portion of the insulating layer 103; fillers 2 are arranged among the three inner cores 1;
the filler 2 and the inner cores 1 at three positions are externally wrapped with an inner liner 3, the outer part of the inner liner 3 is sleeved with a metal armor 4, and the outer part of the metal armor 4 is wrapped with an outer sheath 5;
the filler 2 is internally provided with three arc-shaped elastic sheets 7 at intervals, the three arc-shaped elastic sheets 7 are distributed in an annular array mode, an inner sleeve 8 is arranged between the three arc-shaped elastic sheets 7, and the arc-shaped elastic sheets 7 are connected with the lining layer 3 through clamping plates 9; the clamping plate 9 comprises a mounting groove 901, the clamping plate 9 is provided with two mounting grooves 901, and the arc-shaped elastic sheet 7 is clamped with the clamping plate 9 through the mounting grooves 901;
the metal armor 4 is provided with a snap ring 6, and the snap ring 6 is matched with the arc-shaped elastic sheet 7 in position.
The metal armor 4 comprises a first clamping groove 401 and a connecting sleeve opening 402, the metal armor 4 is of a cylindrical through cavity structure formed by extruding and kneading steel wires, the connecting sleeve opening 402 is formed in the end portion of the metal armor 4, the first clamping groove 401 is formed in the outer peripheral surface of the metal armor 4, and the first clamping groove 401 is close to the connecting sleeve opening 402;
the clamping ring 6 comprises a connecting ring 601 and a second clamping groove 602, the clamping ring 6 is of a two-position annular structure, the two clamping rings 6 are symmetrically distributed, the two clamping rings 6 are connected through the connecting ring 601, and the second clamping groove 602 is formed in the inner peripheral surface of the connecting ring 601;
because the outside cover of insulating layer 103 is equipped with alloy lead cover 104, and metal armour cover 4 is the cylindricality that is kneaded to form through the extrusion by the steel wire and leads to the chamber structure to increase the anti extrusion ability of cable, first draw-in groove 401 is the annular groove structure simultaneously, and snap ring 6 is through first draw-in groove 401 and metal armour cover 4 looks joint, and connect the cuff 402 and pass through second draw-in groove 602 and go-between 601 looks joint, from this it can be seen that metal armour cover 4 is simple with snap ring 6 connection structure, be convenient for manufacturing.
The arc-shaped elastic sheet 7 comprises connecting rods 701, compression springs 702 and baffle rings 703, two connecting rods 701 are arranged on three arc-shaped elastic sheets 7, the two connecting rods 701 are distributed in a parallel mode, the arc-shaped elastic sheets 7 are connected with the inner sleeve 8 through the connecting rods 701, the compression springs 702 are sleeved on the connecting rods 701, the baffle rings 703 are arranged at the end parts of the connecting rods 701, and the baffle rings 703 are detachably connected with the connecting rods 701 in an embedded mode;
the inner sleeve 8 comprises an inflatable bag 801, the inner sleeve 8 is of a through cavity structure with a hexagonal cross section and is formed by splicing PVC plates, the inflatable bag 801 is arranged in the through cavity of the inner sleeve 8, an intumescent flame retardant is filled in the inflatable bag 801, a connecting rod 701 penetrates through the inner sleeve 8, and a compression spring 702 is supported between the side walls of the two opposite ends of the inner sleeve 8.
The specific use mode and function of the embodiment are as follows:
in the utility model, when in use, the external sleeve of the insulating layer 103 is provided with the alloy lead sleeve 104, and the metal armor 4 is a cylindrical through cavity structure formed by extruding and kneading steel wires, thereby increasing the anti-extrusion capability of the cable, meanwhile, the first clamping groove 401 is an annular groove structure, and the snap ring 6 is connected with the metal armor 4 through the first clamping groove 401, and the connecting sleeve port 402 is connected with the connecting ring 601 through the second clamping groove 602, therefore, the connecting structure of the metal armor 4 and the snap ring 6 is simple, and the production and the manufacture are convenient;
in addition, the inner sleeve 8 is of a cross-section hexagonal through cavity structure and is formed by splicing PVC plates, an inflatable bag 801 is arranged in the through cavity of the inner sleeve 8, an intumescent flame retardant is filled in the inflatable bag 801, a connecting rod 701 penetrates through the inner sleeve 8, and a compression spring 702 is supported between the side walls of the two opposite ends of the inner sleeve 8, when a fire disaster happens, the intumescent flame retardant in the inflatable bag 801 is heated to rapidly expand and outwards extrude the inner sleeve 8 to be broken, the connecting rod 701 is separated from the inner sleeve 8, the cable polyvinyl chloride pipe wall which is softened by heat is outwards expanded and broken by utilizing the elastic action of the compression spring 702 and an arc-shaped elastic sheet 7, a combustion path is cut off in a short time, and flame is effectively prevented from spreading along a hole.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. A new structure light flame-retardant copper core polyvinyl chloride insulated cable is characterized by comprising an inner core;
the inner cores are distributed in a ring array mode at three positions, and fillers are arranged among the three inner cores;
the filler and the outer parts of the three inner cores are wrapped with inner liners, metal armoring sleeves are sleeved outside the inner liners, and outer sheaths are wrapped outside the metal armoring sleeves;
the filler is internally provided with three arc-shaped elastic sheets at intervals, the three arc-shaped elastic sheets are distributed in an annular array mode, an inner sleeve is arranged between the three arc-shaped elastic sheets, and the arc-shaped elastic sheets are connected with the inner liner through clamping plates;
and a clamping ring is arranged on the metal armor and is matched with the arc-shaped elastic sheet in position.
2. The new structure light flame retardant copper core polyvinyl chloride insulated cable as claimed in claim 1, characterized in that: the inner core includes copper core, conductor shielding layer, insulating layer and alloy lead cover, and the outside parcel of copper core has the conductor shielding layer, and the conductor shielding layer outside is equipped with the insulating layer to the outside cover of insulating layer is equipped with the alloy lead cover.
3. The new structure light flame retardant copper core polyvinyl chloride insulated cable as claimed in claim 1, characterized in that: the metal armour cover includes first draw-in groove and connecting collar mouth, and the metal armour cover is the cylindricality that is kneaded through the extrusion by the steel wire and forms and leads to the chamber structure, and metal armour cover tip is equipped with the connecting collar mouth, and first draw-in groove has been seted up to metal armour cover outer peripheral face, and first draw-in groove is close to connecting collar mouth position.
4. The new structure light flame retardant copper core polyvinyl chloride insulated cable as claimed in claim 1, characterized in that: the snap ring comprises a connecting ring and a second clamping groove, the snap ring is of an annular structure at two positions, the two snap rings are distributed in a symmetrical mode, the two snap rings are connected through the connecting ring, and the second clamping groove is formed in the inner peripheral surface of the connecting ring.
5. The new structure light flame retardant copper core polyvinyl chloride insulated cable according to claim 3, characterized in that: the first clamping groove is of an annular groove structure, the clamping ring is clamped with the metal armor sleeve through the first clamping groove, and the connecting sleeve opening is clamped with the connecting ring through the second clamping groove.
6. The new structure light flame retardant copper core polyvinyl chloride insulated cable as claimed in claim 1, characterized in that: the arc-shaped elastic piece comprises a connecting rod, a compression spring and a baffle ring, wherein two connecting rods are arranged on three arc-shaped elastic pieces and distributed in a parallel mode, the arc-shaped elastic pieces are connected with the inner sleeve through the connecting rod, the compression spring is sleeved on the connecting rod, the baffle ring is arranged at the end part of the connecting rod, and the baffle ring is detachably connected with the connecting rod in an embedded mode.
7. The new structure light flame retardant copper core polyvinyl chloride insulated cable according to claim 6, characterized in that: the inner sleeve comprises an inflatable bag, the inner sleeve is of a through cavity structure with a hexagonal cross section and is formed by splicing PVC plates, the inflatable bag is arranged in the through cavity of the inner sleeve, an expansion type flame retardant is filled in the inflatable bag, the connecting rod penetrates through the inner sleeve, and the compression spring is supported between the side walls of the two opposite ends of the inner sleeve.
8. The new structure light flame retardant copper core polyvinyl chloride insulated cable as claimed in claim 1, characterized in that: the cardboard includes the mounting groove, and two mounting grooves have been seted up to the cardboard, and the arc shell fragment passes through mounting groove and cardboard looks joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337678.0U CN215183133U (en) | 2021-06-16 | 2021-06-16 | New construction light fire-retardant copper core polyvinyl chloride insulated cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121337678.0U CN215183133U (en) | 2021-06-16 | 2021-06-16 | New construction light fire-retardant copper core polyvinyl chloride insulated cable |
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| CN215183133U true CN215183133U (en) | 2021-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116230298A (en) * | 2023-04-04 | 2023-06-06 | 江苏奥尼特电缆有限公司 | Halogen-free flame-retardant light ship cable and low-smoke halogen-free sheath processing technology thereof |
-
2021
- 2021-06-16 CN CN202121337678.0U patent/CN215183133U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116230298A (en) * | 2023-04-04 | 2023-06-06 | 江苏奥尼特电缆有限公司 | Halogen-free flame-retardant light ship cable and low-smoke halogen-free sheath processing technology thereof |
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