Polyethylene insulated power cable

Abstract

The utility model discloses a polyethylene insulated power cable, and relates to the technical field of power cables. The ventilation heat dissipation groove is formed in the inner side of the lining ring pipe, the outer side of the lining ring pipe is provided with a first flame-retardant filler, the inner side of the first flame-retardant filler is provided with a cable conductor, and the outer surface of the first flame-retardant filler is provided with an anti-puncture wire mesh; a second flame-retardant filler is arranged on the outer surface of the anti-puncture metal wire mesh, a protection assembly is arranged on the outer side of the second flame-retardant filler, four sets of limiting supporting frames are arranged at the inner end of the protection assembly, and reinforcing supporting steel bars are arranged on the inner sides of the limiting supporting frames. The technical problems that the interior of a cable is difficult to limit and support, the power cable is broken or worn in the long-time use process, the interior of the cable is not limited and supported, the power cable is easy to break, and meanwhile workers are injured during operation are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power cable technical field, concretely relates to a polyethylene insulated power cable. BACKGROUND

[0002] With the development of science and technology, the field of industry is also rapidly advancing, which brings the increase of cable consumption. Cables are usually composed of several or several groups of wires, each group has at least two twisted wires, each group of wires is insulated from each other, and is usually twisted around a center. The whole outside is covered with a highly insulated covering layer. There are many types of cables that can be applied in many fields. However, the use environment in different fields is different, so different power cables should be used according to different environments.

[0003] In China, the authorized announcement number is CN213459140U, which discloses a cross-linked polyethylene insulated power cable, including a wire, the outer surface of the wire is sleeved with a water barrier layer, the outer surface of the water barrier layer is wrapped with a filling layer, the outer surface of the filling layer is provided with an inner protective layer, and the outer surface of the inner protective layer is provided with a heat preservation layer. The problem of poor safety performance and poor stability is solved.

[0004] Compared with the above-mentioned insulated power cable, the following defects exist: it is difficult to support the cable inside, which will cause the power cable to break or wear out during long-term use. There is no limiting support effect inside, which is easy to break the power cable, and the operator is also injured during operation. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a polyethylene insulated power cable, which solves the following technical problems: it is difficult to support the cable inside, which will cause the power cable to break or wear out during long-term use. There is no limiting support effect inside, which is easy to break the power cable, and the operator is also injured during operation.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A polyethylene insulated power cable, an inner lining ring pipe;

[0008] A ventilation and heat dissipation groove is opened in the inner side of the inner lining ring pipe, the outer side of the inner lining ring pipe is provided with a first flame-retardant filling, the inner side of the first flame-retardant filling is provided with a cable conductor, and the outer surface of the first flame-retardant filling is provided with a puncture-resistant metal wire mesh;

[0009] The outer surface of the puncture-proof metal wire mesh is provided with a second fire-retardant filling, the outer side of the second fire-retardant filling is provided with a protection assembly, the inner end of the protection assembly is provided with four sets of limiting support frames, and the inner side of the limiting support frame is provided with a reinforced support steel bar.

[0010] As a further scheme of the utility model: the outer surface of the cable conductor is provided with a polyethylene insulation sleeve, and the polyethylene insulation sleeve and the inner lining ring pipe are both wrapped and attached to the first fire-retardant filling.

[0011] As a further scheme of the utility model: the longitudinal section shape of the puncture-proof metal wire mesh is a "cross" shape, and is used for angle limiting.

[0012] As a further scheme of the utility model: the puncture-proof metal wire mesh and the limiting support frame are both wrapped and attached to the second fire-retardant filling.

[0013] As a further scheme of the utility model: the protection assembly is composed of an insulation shielding layer, a steel wire shielding layer, an aluminum plastic tape sleeve layer and an outer protective sleeve wear-resistant layer.

[0014] The outer side of the insulation shielding layer is provided with the steel wire shielding layer, the outer side of the steel wire shielding layer is provided with the aluminum plastic tape sleeve layer, and the outer side of the aluminum plastic tape sleeve layer is provided with the outer protective sleeve wear-resistant layer.

[0015] As a further scheme of the utility model: the insulation shielding layer, the steel wire shielding layer, the aluminum plastic tape sleeve layer and the outer protective sleeve wear-resistant layer are wrapped and stacked with each other.

[0016] As a further scheme of the utility model: the inner end surface of the limiting support frame is attached to the outer surface recess of the puncture-proof metal wire mesh.

[0017] As a further scheme of the utility model: the reinforced support steel bar penetrates into the inside of the limiting support frame and extends to the front and rear ends.

[0018] The utility model discloses beneficial effects:

[0019] 1、 through the puncture-proof metal wire mesh and the limiting support frame are both wrapped and attached to the second fire-retardant filling, the gap is filled and handled, the longitudinal section shape of the puncture-proof metal wire mesh is a "cross" shape, the inner end of the limiting support frame is extruded to the outer surface recess of the puncture-proof metal wire mesh, so that the puncture-proof metal wire mesh is prevented from expanding and breaking open due to pressure, and the reinforced support steel bar penetrates into the inside of the limiting support frame and extends to the front and rear ends, the reinforcing support in the limiting support frame is handled, so that the bending resistance of the power cable is improved.

[0020] 2, through the mutual wrapping of the insulating shielding layer, the steel wire shielding layer, the aluminum plastic tape sleeve layer and the outer protective sleeve wear-resistant layer, the protection effect of the internal parts can be enhanced, and the insulation and wear resistance can be improved, since the power cable itself has a certain resistance, heat will be generated in a long time of use, and when the temperature is too high, the phenomenon of electric leakage or short circuit may occur, therefore, the ventilation and heat dissipation grooves are arranged on the inner side of the lining ring pipe, so that the heat is concentrated and dissipated, and the phenomenon of burning and fire is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be further described below in combination with the drawings.

[0022] Figure 1 It is the front view cross-section structure schematic diagram that the lining ring pipe of the utility model connects with the first flame-retardant filling.

[0023] Figure 2 It is the whole structure schematic diagram that the limiting support frame of the utility model connects with the reinforced support steel bar.

[0024] Figure 3 It is the side view cross-section structure schematic diagram that the lining ring pipe of the utility model connects with the ventilation and heat dissipation groove.

[0025] Figure 4 It is the connecting structure schematic diagram of the protection assembly of the utility model.

[0026] In the drawing: 1, lining ring pipe, 2, ventilation and heat dissipation groove, 3, first flame-retardant filling, 4, cable conductor, 5, polyethylene insulating sleeve, 6, puncture-resistant metal wire mesh, 7, second flame-retardant filling, 8, protection assembly, 801, insulating shielding layer, 802, steel wire shielding layer, 803, aluminum plastic tape sleeve layer, 804, outer protective sleeve wear-resistant layer, 9, limiting support frame, 10, reinforced support steel bar. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0028] Embodiment one

[0029] Please refer to Figure 1 , Figure 2 and Figure 3As shown, the utility model is a kind of polyethylene insulated power cable, specifically can be positioned to support inside cable, avoid in long time use process, lead to power cable fracture or wear and tear problem, inside limit support can enhance the compression resistance of power cable Bending effect, including the outer surface of puncture-proof wire mesh 6 is provided with second flame-retardant filling 7, the outside of second flame-retardant filling 7 is provided with protection assembly 8, the inner end of protection assembly 8 is provided with four groups of limit support frame 9, the inside of limit support frame 9 is provided with reinforced support steel bar 10, can be wrapped in each other Between the setting of adhesion, avoid long-term use causes the phenomenon such as leakage fracture.

[0030] In the embodiment, preferably, the longitudinal section shape of the puncture-proof wire mesh 6 is a "cross" shape, which is used for angle limiting and can wrap and adhere to the cable conductor 4.

[0031] In the embodiment, preferably, the puncture-proof wire mesh 6 and the limit support frame 9 are wrapped and adhered to the second flame-retardant filling 7, which can fill the gap and avoid easy bending inside.

[0032] In the embodiment, preferably, the inner end surface of the limit support frame 9 is in adhering setting with the outer surface recess of the puncture-proof wire mesh 6, which can limit and extrude the bending angle of the puncture-proof wire mesh 6, thereby improving the integrity of the puncture-proof wire mesh 6.

[0033] In the embodiment, preferably, the reinforced support steel bar 10 penetrates the inside of the limit support frame 9 and extends to the front and rear ends, which can reinforce the support inside the limit support frame 9 to improve the bending resistance effect of the power cable.

[0034] In summary, the puncture-proof wire mesh 6 and the limit support frame 9 are wrapped and adhered to the second flame-retardant filling 7, which fills the gap, the longitudinal section shape of the puncture-proof wire mesh 6 is a "cross" shape, the inner end of the limit support frame 9 extrudes and adheres to the outer surface recess of the puncture-proof wire mesh 6 to prevent the puncture-proof wire mesh 6 from expanding and breaking due to pressure, and the reinforced support steel bar 10 penetrates the inside of the limit support frame 9 and extends to the front and rear ends, which reinforces the support inside the limit support frame 9 to improve the bending resistance effect of the power cable.

[0035] Embodiment Two

[0036] Reference Figure 1 , Figure 3 and Figure 4As shown in the second embodiment of the utility model, the safety of the cable can be improved by insulation treatment, and the operator can be prevented from being injured during operation, comprising an inner lining ring pipe 1; a ventilation and heat dissipation groove 2 is formed in the inner side of the inner lining ring pipe 1, the outer side of the inner lining ring pipe 1 is provided with a first flame-retardant filling 3, the inner side of the first flame-retardant filling 3 is provided with a cable conductor 4, and the outer surface of the first flame-retardant filling 3 is provided with a puncture-resistant metal wire mesh 6.

[0037] In the embodiment, preferably, the outer surface of the cable conductor 4 is provided with a polyethylene insulation sleeve 5, and the polyethylene insulation sleeve 5 and the inner lining ring pipe 1 are both wrapped and attached to the first flame-retardant filling 3, so that the cable conductor 4 can be protected from the phenomenon of electric leakage or short circuit.

[0038] In the embodiment, preferably, the protection assembly 8 is composed of an insulation shielding layer 801, a steel wire shielding layer 802, an aluminum plastic tape sleeve layer 803 and an outer protective sleeve wear-resistant layer 804; the outer side of the insulation shielding layer 801 is provided with the steel wire shielding layer 802, the outer side of the steel wire shielding layer 802 is provided with the aluminum plastic tape sleeve layer 803, the outer side of the aluminum plastic tape sleeve layer 803 is provided with the outer protective sleeve wear-resistant layer 804, and the insulation shielding layer 801, the steel wire shielding layer 802, the aluminum plastic tape sleeve layer 803 and the outer protective sleeve wear-resistant layer 804 are wrapped and stacked with each other, so that the wear resistance and insulation effect of the outer surface can be enhanced under the action of the protection assembly 8, and the generated heat can be concentrated and dissipated in cooperation with the inner lining ring pipe 1.

[0039] In summary, the mutual wrapping and stacking of the insulation shielding layer 801, the steel wire shielding layer 802, the aluminum plastic tape sleeve layer 803 and the outer protective sleeve wear-resistant layer 804 can enhance the protection effect of the internal components and improve the insulation and wear resistance, since the power cable itself has a certain resistance, heat will be generated in a long time of use, and electric leakage or short circuit may occur when the temperature is too high, therefore, the ventilation and heat dissipation groove 2 formed in the inner side of the inner lining ring pipe 1 can concentrate and dissipate the heat, so as to avoid the phenomenon of burning.

[0040] Embodiment three

[0041] This embodiment is obtained by combining embodiment one and embodiment two.

[0042] The above can limit and support the internal power cable and perform overall insulation and heat dissipation treatment, which can not only prevent the power cable from being broken or fractured during use or transportation, but also prevent the heat from being generated due to insufficient insulation, so as to cause the phenomenon of electric leakage, short circuit or burning.

[0043] The above has carried out the detailed description to one embodiment of the utility model, but the content described is only the preferred embodiment of the utility model, cannot be considered for limiting the implementation scope of the utility model. All equal changes and improvements etc. that are made in the utility model application scope should still belong to the patent coverage scope of the utility model.

Claims

1. A polyethylene insulated power cable, characterized in that, include; Inner ring pipe (1); Ventilation and heat dissipation groove (2) is opened inside the inner lining ring tube (1). A first flame-retardant filler (3) is provided on the outer side of the inner lining ring tube (1). A cable conductor (4) is provided on the inner side of the first flame-retardant filler (3). A puncture-resistant metal wire mesh (6) is provided on the outer surface of the first flame-retardant filler (3). The outer surface of the puncture-resistant metal wire mesh (6) is provided with a second flame-retardant filler (7), and a protective component (8) is provided on the outer side of the second flame-retardant filler (7). The inner end of the protective component (8) is provided with four sets of limiting support frames (9), and the inner side of the limiting support frame (9) is provided with reinforcing support steel bars (10).

2. The polyethylene insulated power cable according to claim 1, characterized in that, The outer surface of the cable conductor (4) is provided with a polyethylene insulation sleeve (5), and the polyethylene insulation sleeve (5) and the inner lining ring tube (1) are both wrapped and fitted with the first flame retardant filler (3).

3. A polyethylene insulated power cable according to claim 1, characterized in that, The puncture-resistant metal wire mesh (6) has a cross-sectional shape of "+" for angle limiting.

4. A polyethylene insulated power cable according to claim 3, characterized in that, The puncture-resistant metal wire mesh (6) and the limiting support frame (9) are both wrapped and fitted together with the second flame-retardant filler (7).

5. A polyethylene insulated power cable according to claim 1, characterized in that, The protective component (8) consists of an insulating shielding layer (801), a steel wire shielding layer (802), an aluminum-plastic tape sheath layer (803), and an outer protective sheath wear-resistant layer (804); The outer side of the insulating shielding layer (801) is provided with a steel wire shielding layer (802), the outer side of the steel wire shielding layer (802) is provided with an aluminum-plastic tape sleeve layer (803), and the outer side of the aluminum-plastic tape sleeve layer (803) is provided with an outer protective sleeve wear-resistant layer (804).

6. A polyethylene insulated power cable according to claim 5, characterized in that, The insulating shielding layer (801), the steel wire shielding layer (802), the aluminum-plastic tape sheath layer (803), and the outer protective sheath wear-resistant layer (804) are wrapped and stacked together.

7. A polyethylene insulated power cable according to claim 1, characterized in that, The inner end surface of the limiting support frame (9) is fitted to the recessed part of the outer surface of the puncture-proof metal wire mesh (6).

8. A polyethylene insulated power cable according to claim 1, characterized in that, The reinforcing support steel bar (10) runs through the interior of the limiting support frame (9) and extends to both the front and rear ends.

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