Stretch-resistant high-temperature-resistant cable

Abstract

The utility model discloses a tensile high temperature resistant cable. The cable comprises a protective layer, a heat-resistant layer arranged in the protective layer, an armor layer arranged in the heat-resistant layer, a filling layer arranged in the armor layer, a plurality of insulating sleeves inserted in the filling layer, and conductor wire harnesses installed in the insulating sleeves. According to the utility model, through the arrangement of the flame-retardant protrusions, non-combustible ash is generated after combustion and self-extinguishment is realized, the ash wraps the outer ring of the protective layer to carry out fireproof protection on the protective layer, the overall fireproof performance of the cable is improved, the protective layer is made of a cross-linked polyethylene material, and the heat-resistant layer is made of a polyphenylene sulfide material, so that the flame-retardant performance of the cable is improved. Through the combined action of the filling layer, the steel core and the armor layer, the structure is compact, the influence of external force can be effectively reduced, and the overall tensile property of the cable is improved.

Description

Technical Field

[0001] The utility model specifically relates to a tensile and high temperature resistant cable. Background Art

[0002] Cable is a general term for items such as optical cables and electrical cables. Cables have many uses, mainly used for control installation, connecting equipment, transmitting electricity and other multiple functions. They play an important role in daily life and industrial fields. From household appliances to large-scale industrial production, from communication networks to energy transmission, cables are indispensable infrastructure. In other words, cables are a common and indispensable thing in daily life.

[0003] At present, cables have poor fire resistance when in use, are not resistant to high temperatures, and are easily damaged. Moreover, when stretched, the cables are prone to breakage and have low tensile strength, which affects the transmission of electricity.

[0004] Therefore, it is necessary to invent a tensile and high temperature resistant cable to solve the above problems. Utility Model Content

[0005] (I) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a tensile and high-temperature resistant cable, which is provided with flame-retardant protrusions to generate non-combustible ashes after burning. While self-extinguishing, the ashes are wrapped in the outer circle of the protective layer to provide fire protection for the protective layer, thereby improving the overall fire resistance of the cable; further, the protective layer is made of cross-linked polyethylene material, and the heat-resistant layer is made of polyphenylene sulfide material, so that the protective layer and the heat-resistant layer have excellent high-temperature resistance; further, through the joint action of the filling layer, the steel core, and the armor layer, the structure is tight, which can effectively reduce the influence of external forces and improve the overall tensile resistance of the cable.

[0007] (II) Technical solution

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions: a tensile and high temperature resistant cable,

[0009] The cable includes a protective layer, a heat-resistant layer arranged inside the protective layer, an armor layer arranged inside the heat-resistant layer, a filling layer arranged inside the armor layer, a plurality of insulating sleeves inserted inside the filling layer, and a conductor harness installed in each of the insulating sleeves;

[0010] Wherein, the outer ring of the protective layer is connected with a plurality of flame retardant protrusions, and the flame retardant protrusions are set to ethylene propylene rubber, which is used to improve the fire resistance of the cable;

[0011] Among them, a number of steel cores are inserted into the filling layer to improve the tensile strength of the cable.

[0012] Preferably, the filling layer is configured as aramid yarn, and a positioning frame is inserted into the filling layer.

[0013] Preferably, the four sides of the positioning frame are all recessed inwards to form arc-shaped sides, the number of the insulating sleeves is set to four, and the four insulating sleeves are respectively in contact with the four sides of the positioning frame.

[0014] Preferably, a plurality of the flame-retardant protrusions are evenly spaced and distributed on the outer circle of the protective layer.

[0015] Preferably, a plurality of the steel cores are distributed in a circular array inside the filling layer.

[0016] Preferably, the protective layer is made of a cross-linked polyethylene material, and the heat-resistant layer is made of a polyphenylene sulfide material.

[0017] Preferably, the armor layer is woven from galvanized steel strips.

[0018] Preferably, the insulating sleeve is configured to be polyvinyl chloride.

[0019] Preferably, a shielding layer is further provided between the heat-resistant layer and the armor layer, and the shielding layer is woven from aluminum foil.

[0020] Compared with the prior art, the above technical solution of the utility model has the following beneficial effects:

[0021] 1. By connecting a number of flame-retardant protrusions made of EPDM rubber to the outside of the protective layer, the flame-retardant protrusions are not only resistant to high temperatures and difficult to burn, but also, if the fire is large, the flame-retardant protrusions will generate incombustible ashes after burning. While self-extinguishing, the ashes are wrapped in the outer circle of the protective layer to provide fire protection for the protective layer, reduce the scope of the flame, and improve the overall fire resistance of the cable;

[0022] 2. The protective layer is made of cross-linked polyethylene material, and the heat-resistant layer is made of polyphenylene sulfide material, so that the protective layer and the heat-resistant layer have excellent high-temperature resistance, so that the protective layer is not easily damaged when wrapped by ash, and the heat-resistant layer can further block the heat from being transmitted to the conductor harness, so that the high-temperature resistance of the cable is enhanced, and the influence of high temperature on the conductor harness can be reduced;

[0023] 3. By inserting several steel cores inside the filling layer made of aramid yarn and setting an armor layer woven from galvanized steel strips, the filling layer, steel core, and armor layer work together to create a tight structure, which can effectively reduce the impact of external forces, improve the overall tensile strength of the cable, and extend the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the connection structure between the insulating sleeve and the positioning frame of the utility model;

[0027] Figure 3 It is a front cross-sectional view of the utility model.

[0028] Description of reference numerals:

[0029] 1 protective layer, 2 heat-resistant layer, 3 armor layer, 4 filling layer, 5 insulating sleeve, 6 conductor harness, 7 flame-retardant protrusions, 8 steel core, 9 positioning frame, 10 shielding layer. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The utility model provides Figure 1-3 A tensile and high temperature resistant cable is shown, the cable comprising a protective layer 1, a heat resistant layer 2 arranged inside the protective layer 1, an armor layer 3 arranged inside the heat resistant layer 2, a filling layer 4 arranged inside the armor layer 3, a plurality of insulating sleeves 5 inserted inside the filling layer 4, and a conductor harness 6 installed in each of the insulating sleeves 5;

[0032] The outer ring of the protective layer 1 is connected with a plurality of flame retardant protrusions 7, and the flame retardant protrusions 7 are set to ethylene propylene rubber to improve the fire resistance of the cable;

[0033] Among them, a plurality of steel cores 8 are inserted into the filling layer 4 to improve the tensile strength of the cable;

[0034] Wherein, the protective layer 1 is made of cross-linked polyethylene material, the heat-resistant layer 2 is made of polyphenylene sulfide material, and the armor layer 3 is woven from galvanized steel strips.

[0035] In one embodiment, the filling layer 4 is configured to be aramid yarn, and a positioning frame 9 is inserted inside the filling layer 4. The four sides of the positioning frame 9 are all recessed inward to form arc-shaped sides. The number of the insulating sleeves 5 is set to four, and the four insulating sleeves 5 are respectively in contact with the four sides of the positioning frame 9. The filling of aramid yarn allows the four conductor harnesses 6 and the positioning frame 9 to be stably installed inside the armor layer 3. The aramid yarn has excellent compression and torsion resistance, and can provide tensile and compressive protection for the conductor harness 6. The positioning frame 9 can position the insertion position of the four conductor harnesses 6. At the same time, the positioning frame 9 can also provide certain tensile properties, further enhancing the tensile performance of the conductor harness 6, which is beneficial to the use of the cable.

[0036] In one embodiment, a plurality of the flame-retardant protrusions 7 are evenly spaced on the outer circle of the protective layer 1, and the protrusions can reduce the contact area between the protective layer 1 and the outside world, reduce the wear of the protective layer 1, and provide protection for the protective layer 1. A plurality of the steel cores 8 are distributed in a circular array inside the filling layer 4 to improve the overall tensile resistance of the cable.

[0037] In one embodiment, the insulating sleeve is configured to be polyvinyl chloride, which can provide long-term and stable insulation protection for the conductor harness 6, and is inexpensive and has a simple manufacturing process. A shielding layer 10 is also provided between the heat-resistant layer 2 and the armor layer 3, and the shielding layer 10 is woven from aluminum foil. The shielding layer 10 is woven from aluminum foil to prevent high-frequency electromagnetic waves from contacting the conductor harness 6 to generate induced current, reduce crosstalk, and ensure the normal use of the conductor harness 6.

[0038] The specific implementation mode is as follows: when the utility model is in use, a plurality of flame retardant protrusions 7 made of ethylene propylene rubber are arranged on the outer side of the protective layer 1. The ethylene propylene rubber is a commonly used low-smoke halogen-free material, which not only has excellent heat resistance, but also can generate incombustible ashes after burning. While self-extinguishing, the ashes are wrapped in the outer ring of the protective layer 1, thereby providing fire protection for the protective layer 1, so that the scope of the flame is limited, and the protective layer 1 is prevented from burning. That is, the cable can quickly self-extinguish after the fire source is removed, thereby improving the overall fire resistance of the cable;

[0039] At the same time, the flame retardant protrusion 7 made of EPDM rubber also has good elasticity and flexibility, so that the cable has good buffering performance when in use, and the flame retardant protrusion 7 can also reduce the contact area between the protective layer 1 and the outside world, reduce the wear of the protective layer 1, and provide protection for the protective layer 1;

[0040] The protective layer 1 is made of cross-linked polyethylene material, which has excellent high temperature resistance. It can not only provide high temperature protection for the conductor harness 6 inside it, but also reduce the influence of temperature difference on the conductor harness 6. When the ashes after the flame retardant protrusion 7 is burned are wrapped in the protective layer 1, the high temperature in the ashes can be prevented from affecting the conductor harness 6. The cross-linked structure makes the polyethylene have better tensile strength and impact resistance, which can preliminarily improve the tensile resistance of the cable. At the same time, the heat-resistant layer 2 made of polyphenylene sulfide material can be used together with the protective layer 1. The two work together to enhance the high temperature resistance of the cable and further reduce the influence of high temperature on the conductor harness 6.

[0041] The filling layer 4 made of aramid yarn can not only ensure that the conductor harness 6 has good stability after installation, but also the aramid yarn itself has excellent tensile and extrusion resistance, which can provide compression and tensile protection for the conductor harness 6. The steel cores 8 inserted in the filling layer 4 work together with the armor layer 3 woven from galvanized steel strips to form a tight structure, which can further effectively reduce the influence of external forces, improve the overall tensile resistance of the cable, and extend the service life of the cable.

[0042] This implementation specifically solves the problem in the prior art that the current cables have poor fire resistance, are not resistant to high temperatures, and are easily damaged when in use; and the cables are easily broken when stretched and have low tensile strength, which affects the transmission of electricity.

[0043] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tensile and high temperature resistant cable, characterized in that: The cable comprises a protective layer (1), a heat-resistant layer (2) arranged inside the protective layer (1), an armor layer (3) arranged inside the heat-resistant layer (2), a filling layer (4) arranged inside the armor layer (3), a plurality of insulating sleeves (5) inserted inside the filling layer (4), and a conductor harness (6) installed in each of the insulating sleeves (5); The outer ring of the protective layer (1) is connected to a plurality of flame retardant protrusions (7), and the flame retardant protrusions (7) are configured as ethylene propylene rubber, so as to improve the fire resistance of the cable; A plurality of steel cores (8) are inserted into the filling layer (4) to improve the tensile strength of the cable.

2. The tensile and high temperature resistant cable according to claim 1, characterized in that: The filling layer (4) is configured as aramid yarn, and a positioning frame (9) is inserted into the filling layer (4).

3. The tensile and high temperature resistant cable according to claim 2, characterized in that: The four sides of the positioning frame (9) are all recessed inwards to form arc-shaped sides, the number of the insulating sleeves (5) is set to four, and the four insulating sleeves (5) are respectively in contact with the four sides of the positioning frame (9).

4. The tensile and high temperature resistant cable according to claim 1, characterized in that: A plurality of the flame-retardant protrusions (7) are evenly spaced and distributed on the outer circle of the protective layer (1).

5. The tensile and high temperature resistant cable according to claim 1, characterized in that: A plurality of the steel cores (8) are distributed in a circular array inside the filling layer (4).

6. The tensile and high temperature resistant cable according to claim 1, characterized in that: The protective layer (1) is made of a cross-linked polyethylene material, and the heat-resistant layer (2) is made of a polyphenylene sulfide material.

7. The tensile and high temperature resistant cable according to claim 1, characterized in that: The armor layer (3) is woven from galvanized steel strips.

8. The tensile and high temperature resistant cable according to claim 1, characterized in that: The insulating sleeve is configured to be polyvinyl chloride.

9. The tensile and high temperature resistant cable according to claim 1, characterized in that: A shielding layer (10) is further provided between the heat-resistant layer (2) and the armor layer (3), and the shielding layer (10) is woven from aluminum foil.

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