Cable for electrical engineering construction

Abstract

The utility model discloses a cable for electrical engineering construction, which relates to the technical field of construction cables, and comprises a plurality of cable cores, the outer surfaces of the plurality of cable cores are jointly sleeved with an isolating layer, the outer surface of the isolating layer is fixedly connected with a second insulating layer, and the outer surface of the second insulating layer is provided with a plurality of uniformly distributed supporting ceramic layers. A filling layer is arranged between the supporting ceramic layer and the second insulating layer, the outer surfaces of the supporting ceramic layer and the filling layer are jointly and fixedly connected with a first insulating layer, and the outer surface of the first insulating layer is fixedly connected with an outer protective layer. According to the utility model, through the double-layer insulation structure of the first insulation layer and the second insulation layer, the electrical performance of the cable can be ensured, the requirement of high flame retardation performance can be satisfied, the cable cores can be wrapped and protected through the isolation layer, and the cable cores can be separated at the same time, thereby preventing the fire of one cable core from being transmitted to other cable cores, and improving the service life of the cable. Fire spreading is slowed down, and the safety of the cable is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to construction cable technical field, concretely is a cable for electrical engineering construction. BACKGROUND

[0002] The cable for electrical engineering construction is a kind of wire and cable for transmitting power, transmitting information and realizing electromagnetic energy conversion in electrical engineering, and one of the main tasks of electrical engineering is to deliver electric energy from power supply to various electric equipment, cable can carry larger current, efficiently transmit electric energy, ensure that electrical equipment operates normally.

[0003] The prior art has the following problems:

[0004] In electrical engineering construction, cable needs to work in complex environment at construction site, so cable needs to face high temperature, humidity and other complex environments, and various environmental changes can cause cable internal rupture, core fracture and other risks, cause core fire, and after fire, core can cause chain reaction and burn surrounding core, there is a security risk, and frequent handling is needed at construction site, and collision in handling process can affect core transmission efficiency and reduce service life of cable. UTILITY MODEL CONTENT

[0005] The utility model provides a cable for electrical engineering construction to solve the problems in the above background.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A cable for electrical engineering construction, comprising a plurality of cable cores, a plurality of cable core outer surfaces are collectively sleeved with an isolation layer, the isolation layer outer surface is fixedly connected with a second insulation layer, the second insulation layer outer surface is provided with a plurality of uniformly distributed support ceramic layers, the support ceramic layer and the second insulation layer are provided with a filling layer, the support ceramic layer and the filling layer outer surface are collectively fixedly connected with a first insulation layer, and the first insulation layer outer surface is fixedly connected with an outer protective layer.

[0008] The further improvement of the technical scheme of the utility model is that: the filling layer includes shock-absorbing edges, a plurality of buffer layers are fixedly connected to the outer surface of the support ceramic layer between every two adjacent buffer layers, the buffer layer and the shock-absorbing edge are both made of polypropylene reticular fiber, and the surface part of the buffer layer and the shock-absorbing edge is made of silica gel.

[0009] The further improvement of the technical scheme of the utility model is that: the isolation layer includes an isolation main body, a plurality of isolation grooves are formed in the middle of the isolation main body, the cable cores are arranged in the isolation grooves, and the isolation main body is made of polyimide.

[0010] The further improvement of the technical scheme of the utility model lies in that the outer protective layer material is polyvinyl chloride.

[0011] The further improvement of the technical scheme of the utility model lies in that the first insulating layer material is polypropylene.

[0012] The further improvement of the technical scheme of the utility model lies in that the second insulating layer material is cross-linked polyolefin insulating material.

[0013] The further improvement of the technical scheme of the utility model lies in that the supporting ceramic layer is soft ceramic material.

[0014] Due to the adoption of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0015] 1. The utility model provides a cable for electrical engineering construction, can pass through the double -layer insulating structure of first insulating layer and second insulating layer, can guarantee the electric performance of cable, can satisfy the requirement of high flame -retardant property, and can effectively absorb and buffer the vibration and impact force of outside through the filling layer, reduce the influence to cable core, improve the service life of cable, and can pass through the buffer layer and evenly spread transmission of impact force and vibration.

[0016] 2. The utility model provides a cable for electrical engineering construction, can pass through the isolation layer and wrap the cable core protection while separating each cable core, prevents the fire transmission of one cable core to other cable core, slows down the spread of fire, improves the safety of cable, and the material of polyimide can enhance the high temperature resistance and electrical performance of cable insulating wire core, can effectively protect the integrity of wire core under the high temperature and high pressure working condition of severe environment, prevents the wire core from melting under high temperature and high pressure. DRAWINGS

[0017] Figure 1 It is the structural schematic view of the utility model;

[0018] Figure 2 It is the outer side structure sectional view of the utility model;

[0019] Figure 3 It is the middle part structure sectional view of the utility model;

[0020] Figure 4 It is the structural schematic view of the isolation layer.

[0021] In the drawing: 1, outer protective layer; 2, first insulating layer; 3, supporting ceramic layer; 4, filling layer; 41, buffer layer; 42, shock absorption edge; 5, second insulating layer; 6, isolation layer; 61, isolation main body; 62, isolation groove; 7, cable core; DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments:

[0023] As shown in Figures 1-4 The utility model provides a cable for electrical engineering construction, including a plurality of cable core 7, a plurality of cable core 7 outer surface common sleeve is provided with isolation layer 6, the outer surface of isolation layer 6 is fixedly connected with second insulating layer 5, the outer surface of second insulating layer 5 is provided with a plurality of even distribution's support ceramic layer 3, and the support ceramic layer 3 is provided with filling layer 4 between second insulating layer 5, and the outer surface of support ceramic layer 3 and filling layer 4 is fixedly connected with first insulating layer 2, and the outer surface of first insulating layer 2 is fixedly connected with outer sheath 1.

[0024] Cable core 7 is the core part of cable, is responsible for transmission electric energy, and the outer surface of cable core 7 is sleeved with isolation layer 6, which is wrapped and protected on one hand, and separates each cable core 7 on the other hand, avoids the influence of one cable core 7 on other cable core 7 when fire, slows down the spread of fire, improves safety, and second insulating layer 5 plays an insulating role, support ceramic layer 3 provides support for cable, prevents cable structure from deforming, filling layer 4 between support ceramic layer 3 and second insulating layer 5 can play the role of buffering and shock absorption, first insulating layer 2 and outer sheath 1 further enhance the insulation performance and protection effect of cable, so that the cable can stably run in complex construction environment.

[0025] As shown in Figure 2 The utility model provides a cable for electrical engineering construction technical scheme: preferably, filling layer 4 includes shock-absorbing rib 42, a plurality of buffer layers 41 are fixedly connected to the outer surface of support ceramic layer 3 between every two adjacent buffer layers 41, and the internal material of buffer layer 41 and shock-absorbing rib 42 is polypropylene reticular fiber, and the surface part material of buffer layer 41 and shock-absorbing rib 42 is silica gel.

[0026] In electrical engineering construction, cable will be subjected to external vibration and impact force, and adjacent buffer layer 41 and support ceramic layer 3 can effectively disperse and absorb these external forces, and the silica gel on the surface of buffer layer 41 and shock-absorbing rib 42 has good elasticity and shock-absorbing performance, which can further enhance the shock-absorbing effect of filling layer 4, and the internal polypropylene reticular fiber can play a supporting role inside the cable, preventing the internal structure of the cable from deforming under bending, stretching and other conditions.

[0027] As shown in Figure 2As shown in the technical scheme of the cable for electrical engineering construction provided by the utility model, preferably, the outer sheath 1 is made of polyvinyl chloride, has good corrosion resistance, can resist the corrosion of various chemical substances such as acid, alkali and salt, is suitable for various different environmental conditions, has good flame retardance and can prevent the spread of fire to a certain extent, and improves the safety of the cable.

[0028] As Figure 2 shown, the utility model provides a kind of cable technical scheme for electrical engineering construction: preferably, the material of first insulating layer 2 is polypropylene, polypropylene has higher insulation resistance and dielectric strength, can effectively prevent current leakage, ensure the electrical performance of cable.

[0029] As Figure 2 shown, the utility model provides a kind of cable technical scheme for electrical engineering construction: preferably, support ceramic layer 3 is soft porcelain material, soft porcelain can absorb and buffer the vibration and impact force of outside, reduce the influence of these forces on the internal structure of cable, protect cable core 7 and insulating layer, prolong the service life of cable.

[0030] As Figures 3-4 shown, the utility model provides a kind of cable technical scheme for electrical engineering construction: preferably, the material of second insulating layer 5 is crosslinked polyolefin insulation material, cooperates with first insulating layer 2 to ensure the electrical performance of cable and meet the requirement of high flame retardance.

[0031] As Figure 4 shown, the utility model provides a kind of cable technical scheme for electrical engineering construction: preferably, isolation layer 6 includes isolation main body 61, and equal number of isolation grooves 62 as cable core 7 is passed through in the middle of isolation main body 61, and cable core 7 is arranged in isolation groove 62 respectively, and the material of isolation main body 61 is polyimide, can wrap and protect cable core 7 through isolation layer 6 while separating each cable core 7, prevent the fire of one cable core 7 from transmitting to other cable core 7, slow down the spread of fire, improve the safety of cable, and the material of polyimide can enhance the high temperature resistance and electrical performance of cable insulation wire core.

[0032] The working principle of the cable for electrical engineering construction will be described in detail below.

[0033] As Figures 1-4As shown, in the process of protecting the cable core 7, the isolation layer 6 separates each cable core 7 to avoid mutual interference between the cable cores 7, the isolation layer 6 can prevent one cable core 7 from transmitting to other cable cores 7 when it catches fire, the second insulation layer has good insulation performance and can prevent current leakage to protect the cable core 7 from external current interference, the support ceramic layer 3 provides support for the cable to maintain certain shape and structural stability, reduces the movement and extrusion of the cable core 7 inside, and the filling layer 4 can effectively absorb and buffer the force when the cable is subjected to external vibration and impact force, reducing the direct impact on the cable core 7, the first insulation layer 2 is made of polypropylene, and the second insulation layer forms a double-layer insulation structure, further enhancing the insulation performance of the cable to ensure the normal operation of the cable core 7, and the outer protective layer 1 can protect each layer inside the cable from erosion by the external environment.

[0034] The above has made a detailed description of the utility model in general, but on the basis of the utility model, some modifications or improvements can be made, which is obvious to those skilled in the art. Therefore, without departing from the modification or improvement of the spirit of the utility model, it is within the protection scope of the utility model.

Claims

1. A cable for electrical engineering construction, comprising a plurality of cable cores (7), characterized in that: An isolation layer (6) is provided on the outer surface of several cable cores (7). A second insulation layer (5) is fixedly connected to the outer surface of the isolation layer (6). Several uniformly distributed supporting ceramic layers (3) are provided on the outer surface of the second insulation layer (5). A filling layer (4) is provided between the supporting ceramic layer (3) and the second insulation layer (5). A first insulation layer (2) is fixedly connected to the outer surface of the supporting ceramic layer (3) and the filling layer (4). An outer sheath (1) is fixedly connected to the outer surface of the first insulation layer (2).

2. The electrical engineering construction cable according to claim 1, characterized in that: The filling layer (4) includes a damping ridge (42), and a plurality of buffer layers (41) are fixedly connected to the outer surface of the damping ridge (42). Each pair of adjacent buffer layers (41) is fixedly connected to the outer surface of the supporting ceramic layer (3). The internal material of the buffer layer (41) and the damping ridge (42) is polypropylene mesh fiber, and the surface material of the buffer layer (41) and the damping ridge (42) is silicone.

3. The electrical engineering construction cable according to claim 1, characterized in that: The isolation layer (6) includes an isolation body (61). An isolation groove (62) with the same number of cable cores (7) is opened through the middle of the isolation body (61). The cable cores (7) are respectively arranged in the isolation grooves (62). The material of the isolation body (61) is polyimide.

4. The electrical engineering construction cable according to claim 1, characterized in that: The outer protective layer (1) is made of polyvinyl chloride.

5. The electrical engineering construction cable according to claim 1, characterized in that: The first insulating layer (2) is made of polypropylene.

6. The electrical engineering construction cable according to claim 1, characterized in that: The second insulating layer (5) is made of cross-linked polyolefin insulating material.

7. The electrical engineering construction cable according to claim 1, characterized in that: The supporting ceramic layer (3) is made of soft ceramic material.

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