Silicone rubber cable for high-temperature environment

Abstract

The utility model discloses a silicone rubber cable for a high-temperature environment, and the cable sequentially comprises a sheath layer, a flame-retardant belting layer and an inner protection layer from outside to inside, the inner protection layer is internally provided with three cable cores, the top and bottom of the inner protection layer are each provided with a protection plate unit, each protection plate unit comprises a substrate unit and two plugboard units, the inner protection layer is provided with a slot, and the two plugboard units are arranged in the slot. Two of the three cable cores are power cable cores, and the other one of the three cable cores is a control cable core. The cable is provided with the power cable core and the control cable core, so that power transmission and control signal transmission are achieved, the high-temperature-resistant effect is good due to the multi-layer silicone rubber structure, the tensile effect of the cable is good due to the multiple tensile ropes, and the cable can resist large tensile force; therefore, the connector is suitable for connection of circuits of various mobile electrical equipment with AC rated voltage of 450 / 750V and below in high-temperature environments of steel, smelting industry and the like. The two protection plate units enable the cable to have an armoring effect and an anti-torsion effect.

Description

Technical Field

[0001] The utility model relates to the field of cables, and more specifically to a silicone rubber cable for high temperature environments. Background Art

[0002] Power cables are used to transmit electrical energy from power plants, substations, etc. to various electrical equipment or buildings. Control cables are used to transmit various control signals and data signals, transmitting signals from control equipment to controlled equipment to achieve remote control or automatic control.

[0003] Existing cables may encounter the problem of insufficient high temperature resistance in high temperature environments such as the steel and smelting industries. In these environments, high temperatures can cause cable materials to fail, leading to electrical failures and even safety hazards. In addition, in these environments, cables often need to withstand frequent stretching, and ordinary cables may break or deform, resulting in unstable or interrupted circuit connections. In addition, some use cases require separate wiring for power transmission and control signal transmission, which increases wiring costs and complexity. Especially in some scenarios with limited space, separate wiring will take up more space. Some cables also integrate the power cable core and the control cable core together, but this combined cable has poor torsion resistance and lacks sufficient protective structure, which makes the cable susceptible to external physical damage, reduces its protection capabilities, and affects its service life. Summary of the invention

[0004] The utility model aims to overcome the defects of the prior art and provides a silicone rubber cable for high temperature environment.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cable, comprising a sheath layer, a flame-retardant tape layer and an inner sheath from the outside to the inside, wherein the inner sheath has three cable cores distributed in a row, and the top and bottom of the inner sheath are both installed with a protective plate unit, and the protective plate unit includes a base plate unit and two plug-in plate units fixedly connected to the base plate unit, the inner sheath has a slot that matches the plug-in plate unit, and two adjacent cable cores are each provided with two said plug-in plate units, and a tensile rope is installed in the slot, and the end of the plug-in plate unit has a structure capable of accommodating the tensile rope. The receiving groove comprises three cable cores, two of which are power cable cores and the other is a control cable core, the power cable core comprises a first flame retardant layer and a plurality of first core wires in the first flame retardant layer, the first core wire comprises a first conductor and a first insulating layer covering the first conductor, the control cable core comprises a second flame retardant layer, a shielding layer in the second flame retardant layer and a plurality of second core wires in the shielding layer, the second core wire comprises a second conductor and a second insulating layer covering the second conductor, the first and second insulating layers are both silicone rubber insulating layers, and the sheath layer and the inner protective layer are both made of silicone rubber material.

[0006] Furthermore, the two plug-in board units of one protection plate unit correspond one to one with the two plug-in board units of another protection plate unit, and the corresponding two plug-in board units are located on the same vertical line.

[0007] Thereby enhancing the structural stability of the cable.

[0008] Furthermore, the power cable core has three first core wires, and the control cable core has four second core wires.

[0009] Thereby, power transmission and control signal transmission are realized, which can meet the needs of power transmission and control transmission at the same time.

[0010] Furthermore, the shielding layer is a copper wire braided shielding layer.

[0011] This can effectively suppress external electromagnetic interference and protect the signal transmission inside the cable from interference.

[0012] Furthermore, the three cable cores are distributed in a row with equal intervals.

[0013] Thereby further enhancing the structural stability of the cable.

[0014] Furthermore, the base plate unit and the plug-in plate unit both extend along the length direction of the cable core.

[0015] Furthermore, the top and the bottom of the inner protective layer both have abutting surfaces capable of abutting against the substrate unit.

[0016] Thereby, the protective plate unit is more closely fitted to the inner sheath, achieving a stable connection, thereby well protecting the internal structure of the cable.

[0017] Furthermore, the cable has a square structure.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The cable of the present application has a power cable core and a control cable core, thereby realizing power transmission and control signal transmission, which can meet the needs of power transmission and control transmission at the same time. It is suitable for scenarios where power and control signals need to be transmitted simultaneously, and reduces wiring costs and complexity, saving installation space.

[0020] 2. The cable of the present application has a multi-layer silicone rubber structure, so it has good high temperature resistance, and is installed with multiple tensile ropes, so that the cable has good tensile resistance and can withstand large tensile forces, so it is suitable for connecting circuits of various mobile electrical equipment with an AC rated voltage of 450 / 750V and below in high temperature environments such as steel and smelting industries.

[0021] 3. The cable of the present application has a multi-layer flame retardant layer structure, thereby enhancing the fire resistance of the cable, slowing down the spread of flames, reducing the impact of fire on the cable, and improving safety.

[0022] 4. The cable of the present application has two protective plate units, thus having an armoring effect and an anti-torsion effect, thereby effectively preventing damage to the cable caused by external extrusion, impact or twisting, and extending the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first-person perspective diagram of the cable;

[0024] Figure 2 This is an enlarged view of area A;

[0025] Figure 3 This is a schematic diagram of the cable from the second perspective;

[0026] Figure 4 Schematic diagram of the separation of internal structural components of the flame-retardant tape layer.

[0027] Explanation of the reference numerals: 1.1 sheath layer; 1.2 flame retardant tape layer; 1.3 inner sheath; 1.3.1 slot; 2 power cable core; 2.1 first conductor; 2.2 first insulation layer; 2.3 first flame retardant layer; 3 control cable core; 3.1 second conductor; 3.2 second insulation layer; 3.3 shielding layer; 3.4 second flame retardant layer; 4 base plate unit; 5 plug-in board unit; 5.1 receiving groove; 6 tensile rope. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides Figure 1-4A silicone rubber cable for high temperature environment shown in the figure comprises, from outside to inside, a sheath layer 1.1, a flame retardant tape layer 1.2 and an inner sheath 1.3, wherein the inner sheath 1.3 has three cable cores arranged in a row, and a protective plate unit is installed at the top and bottom of the inner sheath 1.3, and the protective plate unit comprises a base plate unit 4 and two plug-in plate units 5 fixedly connected to the base plate unit 4, and the inner sheath 1.3 has a slot 1.3.1 matched with the plug-in plate unit 5, and two plug-in plate units 5 are arranged between two adjacent cable cores, and a tensile rope 6 is installed in the slot 1.3.1, and the end of the plug-in plate unit 5 has a receiving groove 5.1 capable of accommodating the tensile rope 6, and the three cable cores are provided with a plurality of slits 1.3.1, and the slits 1.3.1 ... Two of them are power cable cores 2, and the other one is a control cable core 3. The power cable core 2 includes a first flame retardant layer 2.3 and a plurality of first core wires located in the first flame retardant layer 2.3. The first core wire includes a first conductor 2.1 and a first insulating layer 2.2 covering the first conductor 2.1. The control cable core 3 includes a second flame retardant layer 3.4, a shielding layer 3.3 located in the second flame retardant layer 3.4, and a plurality of second core wires located in the shielding layer 3.3. The second core wire includes a second conductor 3.1 and a second insulating layer 3.2 covering the second conductor 3.1. The first and second insulating layers are both silicone rubber insulating layers. The sheath layer 1.1 and the inner sheath 1.3 are both made of silicone rubber material.

[0030] The two plug-in plate units of one protective plate unit correspond one to one with the two plug-in plate units of the other protective plate unit, and the corresponding two plug-in plate units are located on the same vertical line; the power cable core 2 has three first core wires, and the control cable core 3 has four second core wires; the shielding layer is a copper wire braided shielding layer; the three cable cores are distributed in a row with equal spacing; the substrate unit 4 and the plug-in plate unit 5 both extend along the length direction of the cable core; the top and bottom of the inner sheath 1.3 both have abutment surfaces that can abut the substrate unit 4.

[0031] Working principle: The cable of the present application has a power cable core and a control cable core, thereby realizing power transmission and control signal transmission, which can meet the needs of power transmission and control transmission at the same time, and the power cable core and the control cable core are integrated into the same cable, which can save installation space and simplify wiring, and is particularly suitable for limited space or scenarios where power and control signals need to be transmitted simultaneously. The multi-layer silicone rubber structure makes the cable resistant to high temperatures and can maintain stable electrical performance in high temperature environments. The continuous operating conductor temperature range of the cable is -60~+180℃, and a tensile rope is also installed in the slot of the inner sheath, so that the cable has good tensile resistance and can withstand large tensile forces, so it is suitable for the connection of various mobile electrical equipment circuits with an AC rated voltage of 450 / 750V and below in high temperature environments such as steel and smelting industries. The setting of the first and second flame retardant layers and the flame retardant tape layer enhances the fire resistance of the cable, can slow down the spread of flames, reduce the impact of fire on the cable, and improve safety. Protective plate units are installed on the top and bottom of the inner sheath to provide additional structural support and protection, thereby having an armored effect. The plug-in plate units make the cable torsion-resistant, so that the cable of the present application can prevent damage to the cable caused by external extrusion, impact or twisting, and the cable has a long service life.

[0032] Although the present invention has been illustrated and described with respect to preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A silicone rubber cable for high temperature environment, characterized in that: From the outside to the inside, it includes a sheath layer, a flame retardant tape layer and an inner sheath. The inner sheath has three cable cores distributed in a row. The top and bottom of the inner sheath are both installed with protective plate units. The protective plate unit includes a base plate unit and two plug-in plate units fixedly connected to the base plate unit. The inner sheath has a slot matched with the plug-in plate unit. There are two plug-in plate units between two adjacent cable cores. An anti-pull rope is installed in the slot. The end of the plug-in plate unit has an accommodating groove that can accommodate the anti-pull rope. Two of the three cable cores are power cable cores, and the other is a control cable core. The power cable core includes a first flame retardant layer and a plurality of first core wires located in the first flame retardant layer. The first core wire includes a first conductor and a first insulating layer covering the first conductor. The control cable core includes a second flame retardant layer, a shielding layer located in the second flame retardant layer, and a plurality of second core wires located in the shielding layer. The second core wire includes a second conductor and a second insulating layer covering the second conductor. The first and second insulating layers are both silicone rubber insulating layers. The sheath layer and the inner sheath are made of silicone rubber material.

2. The silicone rubber cable for high temperature environment according to claim 1, characterized in that: The two plug-in board units of one of the protection plate units correspond to the two plug-in board units of the other protection plate unit one by one, and the two corresponding plug-in board units are located on the same vertical line.

3. The silicone rubber cable for high temperature environment according to claim 1, characterized in that: The power cable core has three first core wires, and the control cable core has four second core wires.

4. The silicone rubber cable for high temperature environment according to claim 1, characterized in that: The shielding layer is a copper wire braided shielding layer.

5. The silicone rubber cable for high temperature environment according to claim 1, characterized in that: The three cable cores are arranged in a row with equal spacing.

6. The silicone rubber cable for high temperature environment according to claim 1, characterized in that: The base plate unit and the plug-in plate unit both extend along the length direction of the cable core.

7. The silicone rubber cable for high temperature environment according to claim 1, characterized in that: The top and the bottom of the inner protective layer both have abutting surfaces capable of abutting against the substrate unit.

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