Control cable with good fireproof effect
Patent Information
- Application Number
- CN202323476235.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-19
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2033-12-19
Smart Images
Figure CN222126090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cables, and more specifically to a control cable with good fire resistance effect. Background Art
[0002] Cables that connect the control center to various systems to transmit signals or control operation functions are collectively referred to as control cables. The functions of control cables include indicator light display, instrument indication, operation of relays and switchgear, alarm interlocking system, etc. As the demand for use continues to increase, different cable cores will be set inside the control cable to achieve different functions.
[0003] The existing control cables are equipped with multiple different types of cable cores, so not only the external magnetic field will interfere with the signal transmission, but the magnetic field between the internal cable cores will also cause great interference to the signal transmission, resulting in unstable signal transmission of the cable and poor use effect. In addition, the fire resistance of ordinary control cables is poor. When a fire occurs, the cable will be burned in a short time and cannot continue to work for a period of time. It cannot withstand greater friction. When the cable needs to be frequently dragged and transferred during use, the cable is prone to wear. Over time, the internal structure will be damaged, affecting the service life of the cable. Utility Model Content
[0004] The utility model aims to overcome the defects of the prior art and provide a control cable with good fire resistance effect.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a control cable, comprising an outer sheath, a wear-resistant layer, a flame retardant layer, an outer fire-resistant layer, an outer shielding layer, a tape layer and an outer filling layer which are arranged in sequence from the outside to the inside, a plurality of cable cores are arranged in the outer filling layer, the plurality of cable cores are divided into a central cable core and a plurality of circumferential cable cores, the plurality of circumferential cable cores are divided into a plurality of turns, the plurality of circumferential cable cores in the same turn are distributed in a ring-shaped and equidistant manner, the circumferential cable core is a control cable core, the control cable core comprises a first inner sheath, a first inner shielding layer, a first inner fire-resistant layer and a first conductor which are arranged in sequence from the outside to the inside, the central cable core is a power cable core, the power cable core comprises a second inner sheath and an inner filling layer wrapped by the second inner sheath, a plurality of wire cores are arranged in the inner filling layer, the wire core comprises a second inner shielding layer, a second inner fire-resistant layer and a second conductor which are arranged in sequence from the outside to the inside.
[0006] Preferably, the control cable core has three circles, the first circle has 7 control cable cores and surrounds the power cable core, the second circle has 14 control cable cores and surrounds the first circle of control cable cores, and the third circle has 20 control cable cores and surrounds the second circle of control cable cores.
[0007] Therefore, the overall structure of the cable has good stability.
[0008] Preferably, the first inner shielding layer and the second inner shielding layer are both aluminum-plastic composite tape shielding layers.
[0009] This reduces the interference of the internal magnetic field on the signal.
[0010] Preferably, the outer shielding layer is a copper wire braided shielding layer.
[0011] This further improves the shielding performance of the cable and reduces the interference of external magnetic fields on the signal.
[0012] Preferably, the first inner refractory layer and the second inner refractory layer are both ceramic silicone rubber refractory layers.
[0013] Preferably, the outer refractory layer is a mica tape refractory layer.
[0014] The cable has a multi-layer fire-resistant structure, thereby improving the fire resistance of the cable.
[0015] Preferably, the wear-resistant layer is made of rubber.
[0016] Thereby enhancing the wear resistance of the cable.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] 1. The control cable of the present application is provided with a power cable core and a plurality of control cable cores arranged in a circular array around the power cable core, so that the power cable core is used for power supply and the control cable core is used for signal control.
[0019] 2. The control cable of the present application is provided with a multi-layer shielding layer structure, so that the overall shielding performance of the cable is better, which can prevent the internal and external magnetic fields from interfering with the signal transmission, and a multi-layer fire-resistant layer structure is provided, so that the overall fire-resistant effect of the cable is good.
[0020] 3. The control cable of the present application is provided with a flame retardant layer and a wear-resistant layer, thereby ensuring the flame retardant performance and wear-resistant effect of the entire cable, enhancing the comprehensive performance of the cable, protecting the internal structure of the cable, and thus extending the service life of the cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the structure of the utility model;
[0022] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;
[0023] Figure 3 It is a cross-sectional view of the structure of the utility model.
[0024] Explanation of the reference numerals: 1 outer sheath; 2 wear-resistant layer; 3 flame retardant layer; 4 outer fire-resistant layer; 5 outer shielding layer; 6 tape layer; 7 outer filling layer; 8 control cable core; 8.1 first inner sheath; 8.2 first inner shielding layer; 8.3 first inner fire-resistant layer; 8.4 first conductor; 9 power cable core; 9.1 second inner sheath; 9.2 inner filling layer; 9.3 second inner shielding layer; 9.4 second inner fire-resistant layer; 9.5 second conductor. 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] The utility model provides Figure 1-3 A control cable with good fire resistance is shown, comprising an outer sheath 1, a wear-resistant layer 2, a flame retardant layer 3, an outer fire-resistant layer 4, an outer shielding layer 5, a tape layer 6 and an outer filling layer 7, which are arranged in sequence from the outside to the inside. A plurality of cable cores are arranged in the outer filling layer 7. The plurality of cable cores are divided into a central cable core and a plurality of circumferential cable cores. The plurality of circumferential cable cores are divided into a plurality of turns. The plurality of circumferential cable cores in the same turn are distributed in a ring-shaped manner with equal spacing. The circumferential cable core is a control cable core 8. The control cable core 8 comprises a first inner sheath 8.1, a first inner shielding layer 8.2, a first inner fire-resistant layer 8.3 and a first conductor 8.4, which are arranged in sequence from the outside to the inside. The central cable core is a power cable core 9. The power cable core 9 comprises a second inner sheath 9.1 and an inner filling layer 9.2 wrapped by the second inner sheath 9.1. A plurality of wire cores are arranged in the inner filling layer 9.2. The wire cores comprise a second inner shielding layer 9.3, a second inner fire-resistant layer 9.4 and a second conductor 9.5, which are arranged in sequence from the outside to the inside.
[0027] The control cable core 8 has three circles, the first circle has 7 control cable cores 8 and surrounds the power cable core 9, the second circle has 14 control cable cores 8 and surrounds the first circle of control cable cores 8, and the third circle has 20 control cable cores 8 and surrounds the second circle of control cable cores 8; the first inner shielding layer 8.2 and the second inner shielding layer 9.3 are both aluminum-plastic composite tape shielding layers; the outer shielding layer 5 is a copper wire braided shielding layer; the first inner fire-resistant layer 8.3 and the second inner fire-resistant layer 9.4 are both ceramic silicone rubber fire-resistant layers; the outer fire-resistant layer 4 is a mica tape fire-resistant layer; the wear-resistant layer 2 is made of rubber material.
[0028] Working principle: The control cable of the present application is provided with a power cable core and a plurality of control cable cores arranged in a circular array around the power cable core, so that the power cable core is used for power supply, and the control cable core is used for signal control, and there are multiple control cable cores, which are more efficient and convenient to use. An outer shielding layer is provided, and the control cable core is provided with a first inner shielding layer, and the power cable core is provided with a second inner shielding layer, so that the overall shielding performance of the cable is good, and it can prevent the internal and external magnetic fields from interfering with the signal transmission. An outer fire-resistant layer is provided, and the control cable core is provided with a first inner fire-resistant layer, and the power cable core is provided with a second inner fire-resistant layer, so that the overall fire-resistant effect of the cable is good. A flame-retardant layer and a wear-resistant layer are provided to ensure the overall flame-retardant performance and wear-resistant effect of the cable, enhance the comprehensive performance of the cable, protect the internal structure of the cable, and thus extend the service life of the cable.
[0029] Although the present invention has been illustrated and described with respect to preferred embodiments, those skilled in the art will appreciate 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 control cable with good fire resistance, It is characterized in that The invention comprises an outer sheath (1), a wear-resistant layer (2), a flame-retardant layer (3), an outer fire-resistant layer (4), an outer shielding layer (5), a tape layer (6) and an outer filling layer (7) which are arranged in sequence from the outside to the inside. A plurality of cable cores are arranged in the outer filling layer (7). The plurality of cable cores are divided into a central cable core and a plurality of circumferential cable cores. The plurality of circumferential cable cores are divided into a plurality of circles. The plurality of circumferential cable cores in the same circle are distributed in a circular manner with equal spacing. The circumferential cable core is a control cable core (8). The control cable core (8) comprises a first inner sheath which is arranged in sequence from the outside to the inside. (8.1), a first inner shielding layer (8.2), a first inner fire-resistant layer (8.3) and a first conductor (8.4), the central cable core is a power cable core (9), the power cable core (9) comprises a second inner sheath (9.1) and an inner filling layer (9.2) wrapped by the second inner sheath (9.1), a plurality of wire cores are arranged in the inner filling layer (9.2), and the wire cores comprise a second inner shielding layer (9.3), a second inner fire-resistant layer (9.4) and a second conductor (9.5) which are arranged in sequence from the outside to the inside.
2. The control cable with good fire resistance according to claim 1, It is characterized in that The control cable core (8) has three turns, the first turn has 7 control cable cores (8) and surrounds the power cable core (9), the second turn has 14 control cable cores (8) and surrounds the first turn of control cable cores (8), and the third turn has 20 control cable cores (8) and surrounds the second turn of control cable cores (8).
3. The control cable with good fire resistance according to claim 1, It is characterized in that The first inner shielding layer (8.2) and the second inner shielding layer (9.3) are both aluminum-plastic composite tape shielding layers.
4. The control cable with good fire resistance according to claim 1, It is characterized in that The outer shielding layer (5) is a copper wire braided shielding layer.
5. The control cable with good fire resistance according to claim 1, It is characterized in that The first inner refractory layer (8.3) and the second inner refractory layer (9.4) are both ceramic silicone rubber refractory layers.
6. The control cable with good fire resistance according to claim 1, It is characterized in that The outer refractory layer (4) is a mica tape refractory layer.
7. The control cable with good fire resistance according to claim 1, It is characterized in that The wear-resistant layer (2) is made of rubber material.