Special double-flame-retardant power cable for fire fighting

Abstract

The utility model provides a fire-fighting dedicated double-flame-retardant power cable, and relates to the technical field of power cables. The fire-fighting special-purpose double-flame-retardant power cable comprises a cable body, the cable body comprises a cable wire, the outer surface of the cable wire is provided with a protection mechanism, the protection mechanism comprises an elastic support strip fixed on the outer surface of an inner flame-retardant sleeve, the periphery of the elastic support strip is provided with a flame-retardant mechanism, and the flame-retardant mechanism comprises a second flame-retardant layer. According to the device, through the protection mechanism and the flame-retardant mechanism, the protection effect and the flame-retardant effect of the cable body are improved, through the arranged elastic supporting strips, under the extrusion and collision effect of external force, the influence of collision on the cable body during use is reduced, and the service life of the cable is prolonged; the second flame-retardant layer and the first flame-retardant layer are arranged for good flame-retardant protection, combustion caused by too high internal temperature is avoided under the action of the internal flame-retardant sleeve, and the internal and external dual-flame-retardant effect is formed.

Description

Technical Field

[0001] The utility model relates to a power cable, in particular to a double flame-retardant power cable special for fire protection, belonging to the technical field of flame-retardant power cables. Background Art

[0002] Power cables are cables used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas. The proportion of cables in power lines is gradually increasing. Firefighting facilities are usually used in complex environments or high-temperature places at fire scenes to power firefighting equipment due to their special operating environments. Therefore, flame-retardant power cables are needed.

[0003] Chinese patent publication number CN216054008U discloses a double flame-retardant power cable for fire protection, comprising a first conductor, a second conductor evenly arranged around the center of the first conductor, a high-temperature resistant layer arranged around the first and second conductors, protective strips evenly arranged around the center of the high-temperature resistant layer, a flame-retardant layer arranged around the high-temperature resistant layer, an insulating sleeve arranged around the flame-retardant layer, and protective sleeves clamped on both sides of the insulating sleeve.

[0004] However, the inventor of the above device believes that there are certain defects. The flame retardant effect of the above device is poor, and there is a lack of a protective mechanism for the cable, which makes the cable easily damaged when it is hit or squeezed, reducing the service life of the cable. For this reason, the present utility model provides a double flame retardant power cable specially designed for fire fighting. Utility Model Content

[0005] The purpose of the present invention is to provide a double flame-retardant power cable for fire protection in order to solve the above problems, so as to solve the problem in the prior art that the cable is lacking a protective mechanism for the cable and is easily damaged when it is hit or squeezed.

[0006] The utility model is achieved through the following technical solutions: a double flame-retardant power cable specially used for fire fighting, comprising a cable body, the cable body comprising a cable, the outer surface of the cable is fixedly connected to an inner flame-retardant sleeve, the outer surface of the cable is provided with a protective mechanism, the protective mechanism comprises an elastic support strip fixed to the outer surface of the inner flame-retardant sleeve, the outer periphery of the elastic support strip is provided with a flame-retardant mechanism, the flame-retardant mechanism comprises a second flame-retardant layer, the inner wall of the second flame-retardant layer is wrapped with a first flame-retardant layer, and the elastic support strip is wrapped around the inner wall of the first flame-retardant layer.

[0007] Preferably, there are multiple elastic support strips, which are distributed on the outer surface of the cable in a circular array. The elastic support strips are semicircular in shape, and multiple elastic support strips provide all-round protection for the cable.

[0008] Preferably, the outer surface of the second fire-retardant layer is fixedly connected with an insulation layer, the outer surface of the insulation layer is fixedly connected with a wear-resistant layer, and the wear-resistant layer improves the wear resistance of the whole cable.

[0009] Preferably, the outer surface of the cable body is provided with a protection mechanism for protecting the cable, and the protection mechanism comprises two protection plates.

[0010] Preferably, the two ends of each protection plate are fixedly connected with connecting strips, and the two connecting strips are connected through a combination strip.

[0011] Preferably, the two ends of each protection plate are inlaid with anti-skid strips made of insulating material.

[0012] Preferably, the first fire-retardant layer and the inner fire-retardant sleeve form a filling cavity, and the filling cavity is filled with fire-retardant filler.

[0013] The utility model provides a double fire -retardant type electric power cable special for fire control, it has the beneficial effect as follows:

[0014] The device improves the protection effect and the fire -retardant effect of the cable body through the protection mechanism and the fire -retardant mechanism, and through the elastic supporting strip, the impact on the cable body in use is reduced under the extrusion and collision of external force, the service life of the cable is improved, the second fire -retardant layer and the first fire -retardant layer are arranged to improve the fire -retardant protection, and the internal temperature is prevented from being too high to cause combustion under the action of the inner fire -retardant sleeve, forming the effect of double fire -retardant.

[0015] The device protects the cable connection or the part needing protection through the two protection plates, further improves the protection effect of the cable, and improves the fire -retardant property through the filling cavity. DRAWINGS

[0016] Figure 1 It is the overall perspective view of the utility model;

[0017] Figure 2 It is the cable body structure schematic view of the utility model;

[0018] Figure 3 It is the protection mechanism perspective view of the utility model.

[0019]

MAIN COMPONENT SYMBOL EXPLANATION

[0020] 1. Cable; 2. Elastic support strip; 3. First flame retardant layer; 4. Second flame retardant layer; 5. Insulation layer; 6. Wear-resistant layer; 7. Inner flame retardant sleeve; 8. Filling cavity; 9. Protective plate; 91. Connecting strip; 92. Anti-slip strip; 10. Combination strip. DETAILED DESCRIPTION

[0021] The embodiment of the utility model provides a double flame-retardant power cable specially used for fire fighting.

[0022] See also Figure 1 、 Figure 2 and Figure 3 A double flame-retardant power cable specially designed for fire protection includes a cable body, the cable body includes a cable 1, the outer surface of the cable 1 is fixedly connected to an inner flame-retardant sleeve 7, the outer surface of the cable 1 is provided with a protective mechanism, the protective mechanism includes an elastic support strip 2 fixed to the outer surface of the inner flame-retardant sleeve 7, the elastic support strip 2 is made of flame-retardant elastic material, the number of elastic support strips 2 is multiple, and the multiple elastic support strips 2 are distributed on the outer surface of the cable 1 in a circular array. The elastic support strips 2 are semicircular arc-shaped. When the cable body is impacted or squeezed, the deformation of the elastic support strips 2 is used for buffering.

[0023] See also Figure 1 and Figure 2 A flame retardant mechanism is provided on the outer periphery of the elastic support strip 2, and the flame retardant mechanism includes a second flame retardant layer 4. The inner wall of the second flame retardant layer 4 is wrapped with a first flame retardant layer 3, and the elastic support strip 2 is wrapped around the inner wall of the first flame retardant layer 3. When combustion occurs, the cable 1 inside the cable body is protected by the flame retardant effect of the second flame retardant layer 4 and the first flame retardant layer 3.

[0024] See also Figure 1 and Figure 2 The outer surface of the second flame retardant layer 4 is fixedly connected with an insulating layer 5, which improves the insulation effect of the cable 1 from the outside world. The outer surface of the insulating layer 5 is fixedly connected with a wear-resistant layer 6, which improves the wear resistance of the cable body under the action of the wear-resistant layer 6.

[0025] See also Figure 1 and Figure 2 A filling cavity 8 is formed between the first flame retardant layer 3 and the inner flame retardant sleeve 7. The interior of the filling cavity 8 is filled with a flame retardant filler. The inner flame retardant sleeve 7 is made of flame retardant rubber, and the flame retardant filler is mineral wool. Under the action of the inner flame retardant sleeve 7, the filling cavity 8 and the flame retardant filler, the interior of the cable body has a flame retardant effect.

[0026] See also Figure 1 、 Figure 2 and Figure 3The outer surface of the cable body is provided with a protective mechanism for cable protection. The protective mechanism includes two protective plates 9. The protective plates 9 are semicircular. The two protective plates 9 are combined to wrap and protect the outer surface of the cable body. Both ends of each protective plate 9 are fixedly connected with a connecting strip 91. The two connecting strips 91 are connected by a combination strip 10. One end of the combination strip 10 is provided with a T-slot. The two connecting strips 91 are combined to form a T-block. The combination strip 10 is inserted into the outer surface of the T-block through the T-slot to combine the two protective plates 9 together. Both ends of each protective plate 9 are inlaid with anti-slip strips 92. The anti-slip strips 92 are made of insulating material. Under the action of the anti-slip strips 92, the protective plate 9 is prevented from sliding and shifting when installed on the outer surface of the cable body.

[0027] Working principle: The elastic support strip 2 is provided to resist the cable body from being hit and squeezed, thereby improving the protective effect of the cable 1. The flame retardant effect of the second flame retardant layer 4 and the first flame retardant layer 3 protects the cable 1 inside the cable body. The inner flame retardant sleeve 7, the filling cavity 8 and the flame retardant filler inside the filling cavity 8 have a flame retardant effect on the inside of the cable body, forming a double flame retardant effect inside and outside. The protective mechanism is installed at the cable connection or the part that needs to be protected, the two protective plates 9 are connected and combined, and the two combination strips 10 are respectively inserted into the two groups of connecting strips 91 to complete the rapid installation of the protective mechanism.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A double flame-retardant power cable for fire protection, comprising a cable body, characterized in that: The cable body comprises a cable (1), the outer surface of the cable (1) is fixedly connected to an inner flame-retardant sleeve (7), the outer surface of the cable (1) is provided with a protective mechanism, the protective mechanism comprises an elastic support strip (2) fixed to the outer surface of the inner flame-retardant sleeve (7), the outer periphery of the elastic support strip (2) is provided with a flame-retardant mechanism, the flame-retardant mechanism comprises a second flame-retardant layer (4), the inner wall of the second flame-retardant layer (4) is wrapped with a first flame-retardant layer (3), and the elastic support strip (2) is wrapped around the inner wall of the first flame-retardant layer (3).

2. A double flame-retardant power cable for fire protection according to claim 1, characterized in that: There are multiple elastic support strips (2), and the multiple elastic support strips (2) are distributed on the outer surface of the cable (1) in a circular array. The elastic support strips (2) are in a semicircular arc shape.

3. The double flame-retardant power cable for fire protection according to claim 1, characterized in that: The outer surface of the second flame retardant layer (4) is fixedly connected to an insulating layer (5), and the outer surface of the insulating layer (5) is fixedly connected to a wear-resistant layer (6).

4. The double flame-retardant power cable for fire protection according to claim 1, characterized in that: The outer surface of the cable body is sheathed with a protection mechanism for protecting the cable, and the protection mechanism comprises two protection plates (9).

5. The double flame-retardant power cable for fire protection according to claim 4, characterized in that: Both ends of each protection plate (9) are fixedly connected to a connecting bar (91), and the two connecting bars (91) are connected via a combination bar (10).

6. The double flame-retardant power cable for fire protection according to claim 5, characterized in that: Both ends of each protection plate (9) are inlaid with anti-slip strips (92), and the anti-slip strips (92) are made of insulating material.

7. The double flame-retardant power cable for fire protection according to claim 1, characterized in that: A filling cavity (8) is formed between the first flame-retardant layer (3) and the inner flame-retardant sleeve (7), and the interior of the filling cavity (8) is filled with a flame-retardant filler.

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