CN218957422U

CN218957422U - Medium-voltage crosslinked high-temperature-resistant fire-resistant insulated cable

Info

Publication number: CN218957422U
Application number: CN202221779190.8U
Authority: CN
Inventors: 金霞; 王秀字; 徐忠甫
Original assignee: Shanghai Yeshen Technology Co ltd
Current assignee: Shanghai Yeshen Technology Co ltd
Priority date: 2022-07-11
Filing date: 2022-07-11
Publication date: 2023-05-02
Anticipated expiration: 2032-07-11

Abstract

The utility model belongs to the technical field of wires and cables, and particularly relates to a medium-voltage crosslinked high-temperature-resistant fire-resistant insulated cable, which comprises a heat insulation sleeve, wherein a plurality of conducting cores are uniformly arranged in an inner cavity of the heat insulation sleeve, the conducting cores comprise an inner shielding sleeve, a plurality of conducting wires are uniformly arranged in the inner cavity of the inner shielding sleeve, an inner insulating sleeve is sleeved on an outer ring of the inner shielding sleeve, an inner protective sleeve is sleeved on an outer ring of the inner insulating sleeve, an outer shielding sleeve is sleeved on an outer ring of the heat insulation sleeve, an outer protective sleeve is sleeved on an outer ring of the outer shielding sleeve, and when the medium-voltage crosslinked high-temperature-resistant fire-resistant insulated cable is used, the inner shielding sleeve can play a role of electromagnetic shielding on the conducting wires, the outer shielding sleeve can play a role of electromagnetic shielding on the conducting wires, and the outer shielding sleeve can play a role of insulating on the conducting wires on the outer side, so that compared with a single shielding and insulating mechanism, the shielding and insulating performances of the cable can be effectively improved.

Description

Medium-voltage crosslinked high-temperature-resistant fire-resistant insulated cable

Technical Field

The utility model belongs to the technical field of wires and cables, and particularly relates to a medium-voltage crosslinked high-temperature-resistant fire-resistant insulated cable.

Background

The cable is typically a rope-like cable stranded from several wires or groups of wires (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer face being covered with a highly insulating coating, the cable having the characteristics of inner energizing, outer insulation. The cables include power cables, control cables, compensation cables, shielding cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables and the like, which are all composed of single-strand or multi-strand wires and insulating layers and are used for connecting circuits, electric appliances and the like.

The existing cable only has a single shielding and insulating structure, the shielding and insulating properties of the cable are poor in use, meanwhile, the cable only has a protective sleeve on the outer surface, the wear resistance and the buffering property in extrusion are poor, and the cable is easy to damage in installation and use. The utility model provides a medium-voltage crosslinked high-temperature-resistant fire-resistant insulated cable which can solve the problems.

Disclosure of Invention

The utility model aims to provide a medium-voltage crosslinked high-temperature-resistant fire-resistant insulated cable, which has the advantages of effectively improving the shielding and insulating properties of the cable and effectively improving the strength of the cable so as to solve the problems of the prior cable.

The technical scheme adopted by the utility model is as follows:

the utility model provides a high temperature resistant fire-resistant insulated cable of middling pressure cross-linking, includes the insulating sheath, the inner chamber of insulating sheath is even to be provided with a plurality of guide cores, the outer lane cover of insulating sheath is equipped with outer shield cover, the outer lane cover of outer shield cover is equipped with outer insulating sheath, the outer lane cover of outer insulating sheath is equipped with fire-resistant cover, the outer lane cover of fire-resistant cover is equipped with outer protective sheath.

Preferably, the guide core comprises an inner shielding sleeve, a plurality of wires are uniformly arranged in the inner cavity of the inner shielding sleeve, an inner insulating sleeve is sleeved on the outer ring of the inner shielding sleeve, and an inner protective sleeve is sleeved on the outer ring of the inner insulating sleeve.

Preferably, a plurality of buffer grooves are uniformly formed in the outer protective sleeve, springs are arranged in the inner cavities of the buffer grooves, and a plurality of abrasive grains are uniformly arranged on the outer ring of the outer protective sleeve.

Preferably, the heat insulation sleeve is a polyurethane foam plastic sleeve, the fireproof sleeve is a mica sleeve, and the inner cavity of the heat insulation sleeve is filled with glass fibers.

Preferably, the inner shielding sleeve and the outer shielding sleeve are aluminum foil mailer sleeves, the inner insulating sleeve and the outer insulating sleeve are cross-linked polyethylene sleeves, and the lead is a copper wire.

Preferably, the inner protective sleeve and the outer protective sleeve are PTFE sleeves, and the abrasive grains are rubber grains.

The utility model has the technical effects that:

1. when the medium-voltage crosslinked high-temperature-resistant fire-resistant insulated cable is used, the inner shielding sleeve can play an electromagnetic shielding role on the lead wire, the outer shielding sleeve can play an electromagnetic shielding role on the lead core, the inner insulating sleeve can play an insulating role on the lead wire, and the outer insulating sleeve can play an insulating role on the lead core, so that the shielding and insulating properties of the cable can be effectively improved compared with a single shielding and insulating structure.

2. When the cable is extruded by external force, the spring can play a certain role in buffering and protecting to avoid damage to the inner structure, meanwhile, the inner protective sleeve can protect the lead from the inner, the outer protective sleeve can protect the lead core from the outer, and the wear-resisting particles can effectively improve the wear resistance of the outer protective sleeve to avoid abrasion during installation and use, so that the strength of the cable can be effectively improved to ensure that the cable is not easy to damage.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic plan view of the present utility model;

FIG. 3 is a schematic perspective view of a guide core according to the present utility model;

fig. 4 is an enlarged view of the utility model at a in fig. 2.

In the drawings, the list of components represented by the various numbers is as follows:

1. a heat insulating sleeve; 2. a guide core; 21. an inner shield; 22. a wire; 23. an inner insulating sleeve; 24. an inner protective sleeve; 3. an outer shield; 4. an outer insulating sleeve; 5. a refractory jacket; 6. an outer protective sleeve; 61. a buffer tank; 62. a spring; 7. abrasive resistance; 8. glass fibers.

Detailed Description

The present utility model will be specifically described with reference to examples below in order to make the objects and advantages of the present utility model more apparent. It should be understood that the following text is intended to describe only one or more specific embodiments of the utility model and does not limit the scope of the utility model strictly as claimed.

As shown in fig. 1-4, a medium-voltage crosslinked high-temperature resistant and fireproof insulated cable comprises a heat insulation sleeve 1, wherein a plurality of guide cores 2 are uniformly arranged in an inner cavity of the heat insulation sleeve 1, an outer ring sleeve of the heat insulation sleeve 1 is provided with an outer shielding sleeve 3, an outer ring sleeve of the outer shielding sleeve 3 is provided with an outer insulating sleeve 4, an outer ring sleeve of the outer insulating sleeve 4 is provided with a fireproof sleeve 5, and an outer ring sleeve of the fireproof sleeve 5 is provided with an outer protective sleeve 6.

Specifically, the guide core 2 comprises an inner shielding sleeve 21, a plurality of wires 22 are uniformly arranged in the inner cavity of the inner shielding sleeve 21, the wires 22 are made of copper materials, the wires 22 can be used for piezoelectricity in transmission, an inner insulating sleeve 23 is sleeved on the outer ring of the inner shielding sleeve 21, and an inner protective sleeve 24 is sleeved on the outer ring of the inner insulating sleeve 23.

Specifically, a plurality of buffer grooves 61 have evenly been seted up in the outer protective sheath 6, the inner chamber of buffer groove 61 is provided with spring 62, the outer lane of outer protective sheath 6 evenly is provided with a plurality of wear-resisting grain 7, interior protective sheath 24 and outer protective sheath 6 are the PTFE cover, be made by the PTFE material, wear-resisting grain 7 is the rubber cover, by rubber material, this cable is when receiving external force extrusion, spring 62 can play certain buffering guard action, avoid its inner structure damage, the PTFE material has good chemical stability, corrosion resistance, leakproofness and ageing resistance shape, interior protective sheath 24 can follow interior protection wire 22, outer protective sheath 6 can follow outer protection guide core 2, rubber material has good wear resistance, wear-resisting grain 7 can effectively improve the wear resistance of outer protective sheath 6, avoid it to produce wearing and tearing when installation and use.

Further, the heat insulation sleeve 1 is a polyurethane foam plastic sleeve and is made of polyurethane foam plastic, the fireproof sleeve 5 is a mica sleeve and is made of mica tape materials, the inner cavity of the heat insulation sleeve 1 is filled with glass fibers 8, the mica tape materials are high in fireproof performance, the fireproof sleeve 5 can effectively improve the fireproof performance of the cable, the polyurethane foam plastic and the glass fiber materials have good heat insulation performance, and the heat insulation sleeve 1 and the glass fibers 8 can effectively improve the high temperature resistance of the cable.

Further, the inner shielding sleeve 21 and the outer shielding sleeve 3 are aluminum foil maillard sleeves, and are made of aluminum foil maillard materials, the inner insulating sleeve 23 and the outer insulating sleeve 4 are cross-linked polyethylene sleeves, and are made of cross-linked polyethylene materials, the aluminum foil maillard materials have good electromagnetic wave shielding performance, the inner shielding sleeve 21 can play an electromagnetic shielding role on the lead 22, the outer shielding sleeve 3 can play an electromagnetic shielding role on the lead 2, so that the shielding performance of a cable can be effectively improved, the cross-linked polyethylene materials have good insulating performance, the inner insulating sleeve 23 can play an insulating role on the lead 22, and the outer insulating sleeve 4 can play an insulating role on the lead 2, so that the insulating performance of the cable can be effectively improved.

The working principle of the utility model is as follows: when the cable is used, the aluminum foil maillard material has good electromagnetic wave shielding performance, the inner shielding sleeve 21 can play an electromagnetic shielding role on the lead 22, can play an electromagnetic shielding role on the lead 2 outside, so that the shielding performance of the cable can be effectively improved, the crosslinked polyethylene material has good insulating performance, the inner insulating sleeve 23 can play an insulating role on the lead 22 inside, the outer insulating sleeve 4 can play an insulating role on the lead 2 outside, so that the insulating performance of the cable can be effectively improved, the spring 62 can play a certain buffering protection role when the cable is extruded by external force, the damage of the inner structure is avoided, the PTFE material has good chemical stability, corrosion resistance, sealing performance and ageing resistance, the inner protective sleeve 24 can protect the lead 22 from the inside, the outer protective sleeve 6 can protect the lead 2 from the outside, the rubber material has good wear resistance, the wear resistance of the outer protective sleeve 6 can be effectively improved, the wear resistance of the mica tape material is avoided, the fire resistance of the cable can be effectively improved by the fire resistance sleeve 5, the polyurethane foam and the glass fiber material both have good heat resistance, and the high temperature resistance of the cable can be effectively improved by the heat insulation sleeve 1 and the glass fiber 8.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims

1. The utility model provides a well pressure crosslinked high temperature resistant fire-resistant insulated cable, includes insulating sheath (1), its characterized in that: the inner cavity of the heat insulation sleeve (1) is uniformly provided with a plurality of guide cores (2), an outer ring sleeve of the heat insulation sleeve (1) is provided with an outer shielding sleeve (3), an outer ring sleeve of the outer shielding sleeve (3) is provided with an outer insulating sleeve (4), an outer ring sleeve of the outer insulating sleeve (4) is provided with a fireproof sleeve (5), and an outer ring sleeve of the fireproof sleeve (5) is provided with an outer protection sleeve (6).

2. The medium voltage crosslinked, high temperature resistant and fire resistant insulated cable of claim 1, wherein: the guide core (2) comprises an inner shielding sleeve (21), a plurality of wires (22) are uniformly arranged in the inner cavity of the inner shielding sleeve (21), an inner insulating sleeve (23) is sleeved on the outer ring of the inner shielding sleeve (21), and an inner protective sleeve (24) is sleeved on the outer ring of the inner insulating sleeve (23).

3. The medium voltage crosslinked, high temperature resistant and fire resistant insulated cable of claim 2, wherein: a plurality of buffer grooves (61) are uniformly formed in the outer protective sleeve (6), springs (62) are arranged in the inner cavity of the buffer grooves (61), and a plurality of abrasive particles (7) are uniformly arranged on the outer ring of the outer protective sleeve (6).

4. The medium voltage crosslinked, high temperature resistant and fire resistant insulated cable of claim 1, wherein: the heat insulation sleeve (1) is made of polyurethane foam plastic, the fire-resistant sleeve (5) is made of mica tape materials, and the inner cavity of the heat insulation sleeve (1) is filled with glass fibers (8).

5. The medium voltage crosslinked, high temperature resistant and fire resistant insulated cable of claim 2, wherein: the inner shielding sleeve (21) and the outer shielding sleeve (3) are made of aluminum foil Mylar materials, the inner insulating sleeve (23) and the outer insulating sleeve (4) are made of crosslinked polyethylene materials, and the lead (22) is made of copper materials.

6. A medium voltage crosslinked high temperature resistant and fire resistant insulated cable according to claim 3, characterized in that: the inner protective sleeve (24) and the outer protective sleeve (6) are made of PTFE materials, and the wear-resistant particles (7) are made of rubber materials.