CN216697856U - Intrinsic safety instrument cable with polyethylene insulation and blue polyvinyl chloride sheath layer - Google Patents

Intrinsic safety instrument cable with polyethylene insulation and blue polyvinyl chloride sheath layer Download PDF

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Publication number
CN216697856U
CN216697856U CN202220087405.3U CN202220087405U CN216697856U CN 216697856 U CN216697856 U CN 216697856U CN 202220087405 U CN202220087405 U CN 202220087405U CN 216697856 U CN216697856 U CN 216697856U
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layer
cable
cable core
arranged outside
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CN202220087405.3U
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李银祥
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Guoyou Cable Group Co Ltd
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Guoyou Cable Group Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

The utility model discloses a polyethylene insulated intrinsic safety instrument cable with a blue polyvinyl chloride sheath layer, which comprises a cable core group, wherein the cable core group is formed by twisting seven cable cores, each cable core comprises a pair-twisting group guide core and an external sheath layer, the pair-twisting group guide core is formed by twisting two copper conductors which are respectively coated with insulating layers, a cable core supporting piece is arranged outside the cable core group and comprises a hexagonal buffering strip and elastic arc-shaped sheets, the hexagonal buffering strip is arranged outside the cable core group, the six outer walls of the hexagonal buffering strip are fixedly provided with the elastic arc-shaped sheets, and a cable outer protective layer is arranged outside the cable core supporting piece. The utility model aims at the problems that the compressive strength of the intrinsic safety instrument cable in the prior art is not enough, the cable is easy to be pressed to deform due to the pressure of an external object, the cable is broken, electric leakage exists and the like.

Description

Intrinsic safety instrument cable with polyethylene insulation and blue polyvinyl chloride sheath layer
Technical Field
The utility model relates to the technical field of instrument cables, in particular to a polyethylene insulated intrinsic safety instrument cable with a blue polyvinyl chloride sheath layer.
Background
In the petrochemical industry, most of the petrochemical industry is places such as combustible gas, steam, mist and fibers, so that the circuits applied to the places need intrinsic safety circuits, so that the safety is improved, and the intrinsic safety circuits need a large amount of cables for laying and connecting and need the cables to have higher strength and pressure resistance.
Among the prior art, this ampere of instrument cable's compressive strength is not enough, causes the cable to be pressed to the deformation easily because the pressure of external object to cause the cable to break, there is the condition of electric leakage, consequently makes the cable safe inadequately.
Aiming at the technical problems, the utility model discloses a polyethylene insulated intrinsic safety instrument cable with a blue polyvinyl chloride sheath layer.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, provides a polyethylene insulated intrinsic safety instrument cable with a blue polyvinyl chloride sheath layer, and aims to solve the technical problems that the intrinsic safety instrument cable in the prior art is insufficient in compressive strength, the cable is easy to be crushed to deform due to the pressure of an external object, the cable is broken, electric leakage exists, the cable is not safe enough and the like.
The utility model is realized by the following technical scheme: the utility model discloses a polyethylene insulated intrinsic safety instrument cable with a blue polyvinyl chloride sheath layer, which comprises a cable core group, wherein the cable core group is formed by twisting seven cable cores, each cable core comprises a pair-twisting group guide core and an external sheath layer, the pair-twisting group guide core is formed by twisting two copper conductors which are respectively coated with insulating layers, a cable core supporting piece is arranged outside the cable core group and comprises a hexagonal buffering strip and elastic arc-shaped sheets, the hexagonal buffering strip is arranged outside the cable core group, the six outer walls of the hexagonal buffering strip are fixedly provided with the elastic arc-shaped sheets, and a cable outer protective layer is arranged outside the cable core supporting piece.
Furthermore, an inner cavity is formed in the hexagonal buffer strip, the cable core group is arranged in the inner cavity, and a cable core filling layer is arranged between the cable core group and the inner wall of the inner cavity.
Further, the material of elasticity arc piece is the elastic metal material, and the outer wall that the elasticity arc piece was fixed at hexagon buffering strip forms the arch form attitude, and the arch cavity inside fixed enhancement buffering strip that is provided with between elasticity arc piece and the hexagon buffering strip outer wall, and the material of strengthening buffering strip and hexagon buffering strip is rubber.
Further, the restrictive coating includes that first double-deck polyester area, copper wire weave shielding layer and the double-deck polyester area of second, and first double-deck polyester area is fixed to be set up in the outside of the core is led to the pair twist group, and the copper wire weaves the fixed outside that sets up in first double-deck polyester area of shielding layer, and the double-deck polyester area of second is fixed to be set up in the outside that the shielding layer was woven to the copper wire.
Further, the outer cable protective layer comprises a third double-layer polyester belt, a copper wire woven total shielding layer, a non-woven fabric, a winding layer and a blue polyvinyl chloride sheath layer, the third double-layer polyester belt is arranged outside the cable core supporting piece, the copper wire woven total shielding layer is fixedly arranged outside the third double-layer polyester belt, the non-woven fabric is fixedly arranged outside the copper wire woven total shielding layer, and the blue polyvinyl chloride sheath layer is fixedly arranged outside the non-woven fabric winding layer.
Furthermore, an inner filling layer is arranged between the cable core supporting piece and the third double-layer polyester belt, and the inner filling layer and the cable core filling layer are both made of polypropylene tearing netted filling ropes.
The utility model has the following advantages:
(1) according to the cable core support piece, the cable core group can be buffered through the hexagonal buffering strips arranged outside the cable core group, when the cable is subjected to external pressure, the hexagonal buffering strips are made of rubber, so that a buffering effect can be achieved through the elasticity of the hexagonal buffering strips, the cable core group is prevented from being deformed and damaged due to the fact that the cable is subjected to pressure, the elastic arc-shaped pieces are arranged outside the hexagonal buffering strips in an arched state, buffering can be achieved through the elasticity of the elastic arc-shaped pieces, and therefore the double buffering effect is achieved inside the cable through the hexagonal buffering strips and the elastic arc-shaped pieces, the compression resistance performance of the cable is better, the compression strength of the cable is improved, and the cable is prevented from being pressed to deform to cause cable breakage.
(2) According to the utility model, the reinforcing buffer strip is arranged in the cavity of the elastic arc-shaped piece, so that the reinforcing buffer strip plays a role in reinforcing and buffering in the cavity of the elastic arc-shaped piece, and the buffering effect of the elastic arc-shaped piece is better.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
figure 2 is a schematic perspective view of a cable core support member and reinforcing buffer strips according to the present invention;
figure 3 is a schematic structural view of the cable core support member of the present invention.
In the figure: 1. a cable core group; 2. a cable core support member; 3. an outer cable jacket; 4. an inner cavity; 5. a cable core filling layer; 6. reinforcing the buffer strip; 7. an internal filling layer; 11. a wire core; 111. conducting cores of the pair twisting groups; 112. a sheath layer; 1111. a copper conductor; 1112. an insulating layer; 1121. a first double-layer polyester tape; 1122. weaving a shielding layer by using copper wires; 1123. a second double-layered polyester tape; 201. hexagonal buffer strips; 202. an elastic arc piece; 301. a third double-layer polyester tape; 302. weaving a total shielding layer by using copper wires; 303. a non-woven fabric wrapping layer; 304. a blue polyvinyl chloride sheath layer.
Detailed Description
In the description of the present invention, words like "front", "rear", "left", "back", etc. indicating directions or positional relationships are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.
Example 1
Embodiment 1 discloses a polyethylene insulated intrinsic safety instrument cable with a blue polyvinyl chloride sheath layer, as shown in fig. 1-3, which comprises a cable core group 1, wherein the cable core group 1 is formed by twisting seven cable cores 11, each cable core 11 comprises a pair-twisted group guide core 111 and an outer sheath layer 112, the pair-twisted group guide core 111 is formed by twisting two copper conductors 1111 respectively coated with an insulating layer 1112, specifically, the insulating layer 1112 is made of polyethylene insulation, a cable core support 2 is arranged outside the cable core group 1, the cable core support 2 comprises a hexagonal buffer strip 201 and elastic arc-shaped sheets 202, the hexagonal buffer strip 201 is arranged outside the cable core group 1, the six outer walls of the hexagonal buffer strip 201 are respectively and fixedly provided with the elastic arc-shaped sheets 202, the elastic arc-shaped sheets 202 are made of elastic metal, and the elastic arc-shaped sheets 202 are fixed on the outer walls of the hexagonal buffer strip 201 to form an arch shape, the reinforcing buffer strip 6 is fixedly arranged inside the arched cavity between the outer wall of the elastic arc-shaped piece 202 and the outer wall of the hexagonal buffer strip 201, the reinforcing buffer strip 6 and the hexagonal buffer strip 201 are made of rubber, the elastic arc-shaped piece 202 is arranged outside the hexagonal buffer strip 201 in an arched state, and therefore buffering can be achieved through the elastic force of the elastic arc-shaped piece 202, so that the hexagonal buffer strip 201 and the elastic arc-shaped piece 202 play a double buffering role inside a cable, the compression resistance of the cable is better, the compression strength of the cable is improved, the cable is prevented from being pressed to deform, cable breakage is caused, the reinforcing buffer strip 6 is arranged inside the cavity of the elastic arc-shaped piece 202, and the reinforcing buffer strip 6 plays a reinforcing buffering role inside the cavity of the elastic arc-shaped piece 202, therefore, the buffering effect of the elastic arc-shaped sheet 202 is better, and the outer part of the cable core supporting piece 2 is provided with the outer cable protection layer 3; an inner cavity 4 is formed inside the hexagonal buffer strip 201, the cable core group 1 is arranged inside the inner cavity 4, and the cable core group 1 is inserted into the inner cavity 4 by arranging the inner cavity 4, so that the cable core group 1 is positioned inside the hexagonal buffer strip 201 and is protected by buffering, and a cable core filling layer 5 is arranged between the cable core group 1 and the inner wall of the inner cavity 4; the sheath layer 112 comprises a first double-layer polyester tape 1121, a copper wire braided shielding layer 1122 and a second double-layer polyester tape 1123, the first double-layer polyester tape 1121 is fixedly arranged outside the pair-twisted group guide core 111, the copper wire braided shielding layer 1122 is fixedly arranged outside the first double-layer polyester tape 1121, specifically, the copper wire braided shielding layer 1122 is of a composite structure formed by copper wires and copper strips, a cable can be subjected to signal shielding through the copper wire braided shielding layer 1122, and the second double-layer polyester tape 1123 is fixedly arranged outside the copper wire braided shielding layer 1122; the cable outer protective layer 3 comprises a third double-layer polyester tape 301, a copper wire woven total shielding layer 302, a non-woven fabric wrapping layer 303 and a blue polyvinyl chloride sheath layer 304, the third double-layer polyester tape 301 is arranged outside the cable core supporting piece 2, the copper wire woven total shielding layer 302 is fixedly arranged outside the third double-layer polyester tape 301, specifically, the structure of the copper wire woven total shielding layer 302 is the same as that of the copper wire woven shielding layer 1122, the copper wire woven total shielding layer 302 is arranged, so that the double shielding effect can be achieved by the copper wire woven total shielding layer 302 and the copper wire woven shielding layer 1122, the non-woven fabric wrapping layer 303 is fixedly arranged outside the copper wire woven total shielding layer 302, and the blue polyvinyl chloride sheath layer 304 is fixedly arranged outside the non-woven fabric wrapping layer 303; be provided with inside filling layer 7 between cable core support piece 2 and the double-deck polyester of third area 301, the material of inside filling layer 7 and cable core filling layer 5 is polypropylene and tears netted filling rope, tears netted filling rope through all setting up the material of inside filling layer 7 and cable core filling layer 5 into polypropylene.
The principle of the utility model is as follows: when the cable is extruded by pressure outside, the hexagonal buffer strips 201 and the elastic arc-shaped sheets 202 are arranged outside the cable core group 1, and the hexagonal buffer strips 201 are made of rubber, so that the buffer effect can be achieved through the elasticity of the hexagonal buffer strips 201, the cable core group 1 is prevented from being deformed and damaged due to the pressure, meanwhile, the arched elastic arc-shaped sheets 202 arranged on six surfaces of the hexagonal buffer strips 201 can buffer through the elasticity, so that the outside of the cable core group 1 can be buffered through the cable core supporting piece 2 in all directions, and the double buffer effect is achieved inside the cable through the hexagonal buffer strips 201 and the elastic arc-shaped sheets 202, so that the compression resistance of the cable is better, and the reinforcing buffer strips 6 are arranged inside the cavity of the elastic arc-shaped sheets 202, so that the reinforcing buffer strips 6 play a reinforcing and buffering effect inside the cavity of the elastic arc-shaped sheets 202, thereby making the buffering effect of the elastic arc-shaped piece 202 better.

Claims (6)

1. A polyethylene insulated intrinsic safety instrument cable with a blue polyvinyl chloride sheath layer is characterized by comprising a cable core group (1), the cable core group (1) is formed by twisting seven cable cores (11), the cable cores (11) comprise a pair-twisted group guide core (111) and an external sheath layer (112), the pair-twisted group conducting core (111) is formed by twisting two copper conductors (1111) which are respectively coated with insulating layers (1112), a cable core supporting piece (2) is arranged outside the cable core group (1), the cable core supporting piece (2) comprises a hexagonal buffer strip (201) and an elastic arc-shaped piece (202), the hexagonal buffer strips (201) are arranged outside the cable core group (1), the elastic arc-shaped sheets (202) are fixedly arranged on the outer walls of six sides of the hexagonal buffer strips (201), and a cable outer protective layer (3) is arranged outside the cable core supporting piece (2).
2. The intrinsically safe instrument cable with the polyethylene insulation blue polyvinyl chloride sheath layer as claimed in claim 1, wherein an inner cavity (4) is formed inside the hexagonal buffer strip (201), the cable core group (1) is arranged inside the inner cavity (4), and a cable core filling layer (5) is arranged between the cable core group (1) and the inner wall of the inner cavity (4).
3. The intrinsically safe instrument cable with the polyethylene insulating blue polyvinyl chloride sheath layer as claimed in claim 1, wherein the elastic arc-shaped piece (202) is made of elastic metal, the elastic arc-shaped piece (202) is fixed on the outer wall of the hexagonal buffer strip (201) to form an arch shape, a reinforcing buffer strip (6) is fixedly arranged inside an arch-shaped cavity between the elastic arc-shaped piece (202) and the outer wall of the hexagonal buffer strip (201), and the reinforcing buffer strip (6) and the hexagonal buffer strip (201) are made of rubber.
4. The intrinsic safety instrument cable with the polyethylene-insulated blue polyvinyl chloride sheath layer as claimed in claim 1, wherein the sheath layer (112) comprises a first double-layer polyester tape (1121), a copper wire braided shielding layer (1122) and a second double-layer polyester tape (1123), the first double-layer polyester tape (1121) is fixedly arranged outside the twisted pair group guide core (111), the copper wire braided shielding layer (1122) is fixedly arranged outside the first double-layer polyester tape (1121), and the second double-layer polyester tape (1123) is fixedly arranged outside the copper wire braided shielding layer (1122).
5. The intrinsic safety instrument cable of the polyethylene-insulated blue polyvinyl chloride sheath layer of claim 1, wherein the outer cable sheath layer (3) comprises a third double-layer polyester tape (301), a copper wire-woven total shielding layer (302), a non-woven fabric-wrapped layer (303) and a blue polyvinyl chloride sheath layer (304), the third double-layer polyester tape (301) is arranged outside the cable core support (2), the copper wire-woven total shielding layer (302) is fixedly arranged outside the third double-layer polyester tape (301), the non-woven fabric-wrapped layer (303) is fixedly arranged outside the copper wire-woven total shielding layer (302), and the blue polyvinyl chloride sheath layer (304) is fixedly arranged outside the non-woven fabric-wrapped layer (303).
6. The intrinsic safety instrument cable with the polyethylene insulation blue polyvinyl chloride sheath layer as claimed in claim 5, wherein an internal filling layer (7) is arranged between the cable core support member (2) and the third double-layer polyester tape (301), and the internal filling layer (7) and the cable core filling layer (5) are both made of polypropylene tearing netted filling ropes.
CN202220087405.3U 2022-01-13 2022-01-13 Intrinsic safety instrument cable with polyethylene insulation and blue polyvinyl chloride sheath layer Active CN216697856U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220087405.3U CN216697856U (en) 2022-01-13 2022-01-13 Intrinsic safety instrument cable with polyethylene insulation and blue polyvinyl chloride sheath layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220087405.3U CN216697856U (en) 2022-01-13 2022-01-13 Intrinsic safety instrument cable with polyethylene insulation and blue polyvinyl chloride sheath layer

Publications (1)

Publication Number Publication Date
CN216697856U true CN216697856U (en) 2022-06-07

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ID=81826444

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220087405.3U Active CN216697856U (en) 2022-01-13 2022-01-13 Intrinsic safety instrument cable with polyethylene insulation and blue polyvinyl chloride sheath layer

Country Status (1)

Country Link
CN (1) CN216697856U (en)

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