Silicone rubber high-temperature-resistant control cable

Abstract

The utility model discloses a silicone rubber high-temperature-resistant control cable which comprises an outer protection layer, an outer wrapping layer, an inner protection layer, a shielding layer and an inner wrapping layer which are sequentially arranged from outside to inside, a plurality of cable cores and a plurality of first flame-retardant filling ropes are arranged in the inner wrapping layer, each cable core comprises a conductor and an insulating layer, a plurality of protruding parts are arranged on the outer surface of the inner protection layer, and the first flame-retardant filling ropes are arranged on the outer surface of the inner protection layer. The protruding parts are strip-shaped, and a plurality of second flame-retardant filling ropes are arranged in the outer wrapping layer. According to the control cable, the insulating layer, the inner protective layer and the wrapping layer have a good flame-retardant effect, the cable has a better flame-retardant effect due to the first flame-retardant filling rope and the second flame-retardant filling rope, and the insulating layer, the inner protective layer and the outer protective layer have good high-temperature resistance, so that the control cable can be used for control transmission in a high-temperature environment. The protruding parts enable the cable to have a certain pressure-bearing characteristic and a certain pressure-resistant characteristic, and facilitate the realization of better twisting cooperation between the inner protection layer and the second flame-retardant filling rope.

Description

Technical Field

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

[0002] Control cables are used to connect various control devices and control systems. They are used to transmit signals and power to control and monitor the equipment. Control cables are widely used in various fields and play an important role in helping to achieve automated, intelligent and efficient control and management.

[0003] Existing control cables are difficult to maintain a stable operating state, especially when used in high temperature environments for a long time. High temperature environments will accelerate the aging of control cable insulation materials, causing them to lose their insulation properties and even cause short circuits or fires. In addition, in high temperature environments, the outer sheath materials of control cables may become hard or brittle, making them susceptible to mechanical damage, reducing the service life of the cables. Some control cables have weak flame retardant properties. In the event of a fire, the fire is likely to spread to other areas through the cables, causing the fire to spread further, expanding the scope of influence and causing greater losses. Fires can also cause control cables to burn or be damaged, which in turn affects the normal operation of the system and causes equipment damage. In addition, the filling ropes in some control cables may not be twisted tightly enough when twisted, causing the twisted parts to become loose or have gaps, making the internal structure unstable, thereby affecting the performance and reliability of the cables. Utility Model Content

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

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silicone rubber high temperature resistant control cable, comprising an outer sheath, an outer wrapping layer, an inner sheath, a shielding layer and an inner wrapping layer which are arranged in sequence from the outside to the inside, wherein the inner wrapping layer has a plurality of cable cores and a plurality of first flame retardant filling ropes, the cable core comprises a conductor and an insulating layer wrapping the conductor, the insulating layer is made of silicone rubber material, the inner wrapping layer is a mica tape wrapping layer, the inner sheath is made of silicone rubber material, the outer surface of the inner sheath has a plurality of protrusions, the protrusions are strip-shaped, the outer wrapping layer is an aluminum foil wrapping layer, the outer wrapping layer has a plurality of second flame retardant filling ropes, the outer sheath is made of nitrile polyvinyl chloride material, and the cross-section of the control cable is circular.

[0006] Furthermore, the number of the cable cores is seven or nineteen.

[0007] Thereby, it is used to meet the needs of multiple signal transmission.

[0008] Furthermore, the shielding layer is a copper wire braided shielding layer.

[0009] This can provide better shielding performance and effectively reduce the impact of external electromagnetic interference on the internal signals of the cable.

[0010] Furthermore, a plurality of second flame-retardant filling ropes are distributed in a ring shape with equal intervals.

[0011] This helps to improve the overall structural stability and mechanical strength of the cable, while also providing better flame retardant properties and enhancing the safety performance of the cable.

[0012] Furthermore, the protrusion and the inner protective layer are extruded integrally, and the protrusion extends along the length direction of the cable core.

[0013] This makes the cable have certain pressure-bearing and pressure-resistant properties.

[0014] Furthermore, the plurality of protrusions are distributed in a ring shape with equal intervals.

[0015] This can evenly disperse the external force of the cable and improve the overall stability and compression resistance of the cable.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The control cable of the present application has good flame retardant effect in the insulation layer, inner sheath and winding layer. The first and second flame retardant filling ropes make the cable have better flame retardant effect. The insulation layer, inner sheath and outer sheath have good high temperature resistance, so it can be used for control transmission in high temperature environment.

[0018] 2. The control cable of the present application has a plurality of strip-shaped protrusions on the outer side of the inner sheath, which makes the cable have certain pressure-bearing and pressure-resistant properties, and helps to achieve better twisting and matching between the inner sheath and the second flame-retardant filling rope, thereby improving the stability of the cable structure and extending the service life of the cable.

[0019] 3. The control cable of the present application has multiple cable cores, so that it can transmit more data or signals to meet higher requirements. It can also support various types of signal transmission, so that the cable has more uses and application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of Example 1;

[0021] Figure 2 This is an enlarged schematic diagram of point A;

[0022] Figure 3 is a cross-sectional view of Example 1;

[0023] Figure 4 This is a cross-sectional view of Example 2.

[0024] Explanation of reference numerals: 1.1 outer sheath; 1.2 outer wrapping layer; 1.3 second flame retardant filling rope; 1.4 inner sheath; 1.4.1 raised portion; 1.5 shielding layer; 1.6 inner wrapping layer; 1.7 first flame retardant filling rope; 2 cable core; 2.1 conductor; 2.2 insulating layer. DETAILED DESCRIPTION

[0025] 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.

[0026] Example 1

[0027] This embodiment provides Figure 1-3 A silicone rubber high temperature resistant control cable is shown, comprising an outer sheath 1.1, an outer wrapping layer 1.2, an inner sheath 1.4, a shielding layer 1.5 and an inner wrapping layer 1.6 which are arranged in sequence from outside to inside, wherein the inner wrapping layer 1.6 has a plurality of cable cores 2 and a plurality of first flame retardant filling ropes 1.7, wherein the cable core 2 comprises a conductor 2.1 and an insulating layer 2.2 wrapping the conductor 2.1, wherein the insulating layer 2.2 is made of silicone rubber material, the inner wrapping layer 1.6 is a mica tape wrapping layer, the inner sheath 1.4 is made of silicone rubber material, the outer surface of the inner sheath 1.4 has a plurality of protrusions 1.4.1, and the protrusions 1.4.1 are strip-shaped, the outer wrapping layer 1.2 is an aluminum foil wrapping layer, wherein the outer wrapping layer 1.2 has a plurality of second flame retardant filling ropes 1.3, the outer sheath 1.1 is made of nitrile polyvinyl chloride material, and the cross-section of the control cable is circular.

[0028] The number of the cable cores 2 is seven, including a central cable core and six circumferential cable cores surrounding the central cable core; the shielding layer 1.5 is a copper wire braided shielding layer; a plurality of second flame-retardant filling ropes 1.3 are distributed in a ring-shaped and equidistant manner; the raised portion 1.4.1 and the inner protective layer 1.4 are extruded as one piece, and the raised portion 1.4.1 extends along the length direction of the cable core; a plurality of raised portions 1.4.1 are distributed in a ring-shaped and equidistant manner.

[0029] Working principle: The control cable of the present application has an insulation layer and an inner sheath made of silicone rubber material, so it has good high temperature resistance and flame retardant properties. The inner and outer winding layers have good flame retardant effects, and the first and second flame retardant filling ropes make the cable have better flame retardant effects, which can play a flame retardant role in the event of a fire, prevent the fire from spreading further, protect the conductor inside the cable from damage, reduce losses, and the shielding layer has a good shielding effect. The outer sheath is made of nitrile polyvinyl chloride material, so it has high temperature resistance and aging resistance. Therefore, the cable of the present application can be used for control transmission in high temperature environments.

[0030] The outer side of the inner sheath has a plurality of strip-shaped protrusions extending along the length direction of the cable core, so that the cable has certain pressure-bearing and pressure-resistant characteristics. When the cable is subjected to external extrusion or pressure, the protrusions can play a supporting and buffering role to prevent the internal conductor and insulating material from being damaged by excessive force. In addition, the protrusions also help to achieve better twisting and matching between the inner sheath and the second flame-retardant filling rope. Specifically, during the twisting process, the second flame-retardant filling rope can form a certain degree of pressure on the protrusion (having a certain resilience after pressing), so that the second flame-retardant filling rope and the protrusion are twisted more tightly, thereby preventing the cable from loosening or displacing during use, maintaining the stability of the cable structure, and extending the service life of the cable.

[0031] Example 2

[0032] like Figure 4 As shown, the difference between Example 2 and Example 1 is that the number of cable cores is nineteen, including a central cable core, six first circumferential cable cores surrounding the central cable core, and twelve second circumferential cable cores surrounding the first circumferential cable cores. As a result, due to the increase in the number of cable cores, the transmission capacity and bandwidth of the cable will also increase accordingly. Thus, more data or signals can be transmitted to meet higher requirements. In addition, by increasing the number of cable cores, various types of signal transmission can be supported, so that the cable has more uses and application scenarios.

[0033] 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 high temperature resistant control cable, characterized in that: The invention comprises an outer protective layer (1.1), an outer wrapping layer (1.2), an inner protective layer (1.4), a shielding layer (1.5) and an inner wrapping layer (1.6) which are arranged in sequence from the outside to the inside, wherein the inner wrapping layer (1.6) has a plurality of cable cores (2) and a plurality of first flame-retardant filling ropes (1.7), the cable core (2) comprises a conductor (2.1) and an insulating layer (2.2) wrapping the conductor (2.1), the insulating layer (2.2) is made of a silicone rubber material, and the inner wrapping layer (1.6) is provided with a plurality of first flame-retardant filling ropes (1.7). The layer (1.6) is a mica tape wrapping layer, the inner sheath (1.4) is made of silicone rubber material, the outer surface of the inner sheath (1.4) has a plurality of protrusions (1.4.1), the protrusions (1.4.1) are strip-shaped, the outer sheath (1.2) is an aluminum foil wrapping layer, the outer sheath (1.2) has a plurality of second flame-retardant filling ropes (1.3), the outer sheath (1.1) is made of nitrile polyvinyl chloride material, and the cross-section of the control cable is circular.

2. The silicone rubber high temperature resistant control cable according to claim 1, characterized in that: The number of the cable cores (2) is seven or nineteen.

3. The silicone rubber high temperature resistant control cable according to claim 1, characterized in that: The shielding layer (1.5) is a copper wire braided shielding layer.

4. The silicone rubber high temperature resistant control cable according to claim 1, characterized in that: A plurality of second flame-retardant filling ropes (1.3) are distributed in a ring-like shape at equal intervals.

5. The silicone rubber high temperature resistant control cable according to claim 1, characterized in that: The raised portion (1.4.1) and the inner protective layer (1.4) are integrally extruded, and the raised portion (1.4.1) extends along the length direction of the cable core.

6. The silicone rubber high temperature resistant control cable according to claim 1, characterized in that: The plurality of protrusions (1.4.1) are distributed in a ring shape with equal intervals.

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