Environmentally friendly flame-retardant cable

Abstract

The invention relates to an environmentally friendly flame-retardant cable in the field of cables, comprising a wire core, an insulating protective layer, a shielding layer and an outer insulating layer. A reinforced wire row is arranged between the shielding layer and the outer insulating layer, and the wire row contains a plurality of detection wires. The detection wires consist of a plurality of segmented pipelines, which have thermistors inside and are connected in series. The segmented pipelines are connected by hollow rings, and an overheating fuse is built in the hollow rings. A plurality of insulating protection wires are arranged between the detection wires. A plurality of auxiliary rings are sleeved on the outer insulating layer. The auxiliary rings contain a main clamping ring and an inner ring body. An electric pole is arranged inside the inner ring body, and the electric pole matches a terminal head. An elastic wire is passed between the electric pole and a stud. By arranging a reinforced wire row in the cable and correspondingly installing a plurality of auxiliary rings, segmented monitoring, detection and maintenance of the cable are realized, which is convenient for quickly locating an overheating area when the cable is overheated, and the maintenance and repair are convenient and fast, and the maintenance cost is easy to reduce.

Description

Technical Field

[0001] The present invention relates to an environmentally friendly flame-retardant cable, in particular to an environmentally friendly flame-retardant cable applied in the field of cables. Background Art

[0002] Cable is an important carrier of power transmission and communication, and is widely used in various industries. It is made of high-quality materials and has excellent conductivity, insulation and mechanical strength. The cable has a compact structure, is easy to install, and is safe and reliable to use. It can meet the needs of different scenarios and provide solid power support for the development of modern society.

[0003] With the development of science and technology, people pay more and more attention to the safety and environmental protection of cables. When traditional cables burn, they will not only produce a lot of smoke and toxic gases, which will cause great trouble to the evacuation and fire fighting of personnel, but also the harmful substances produced by their combustion will cause long-term harm to the environment and human health.

[0004] In order to solve the problem of cable flame retardancy, a certain cable in the market adopts a flame retardant material protective layer design, which has a certain market share.

[0005] The specification of Chinese invention patent CN117335210B discloses a flame-retardant power cable, comprising a first cable assembly, a second cable assembly and a connector, wherein the first cable assembly is connected to the second cable assembly via the connector, a first fixing assembly is arranged on the circumferential surface of the first cable assembly, a second fixing assembly is arranged on the circumferential surface of the second cable assembly, reinforcing assemblies are arranged on the circumferential surfaces of the first fixing assembly and the second fixing assembly, and the first fixing assembly is connected to the second fixing assembly via the reinforcing assembly; further comprising a limiting assembly, a limiting assembly is arranged on the circumferential surface of the first fixing assembly, and the first fixing assembly is connected to the limiting assembly via the reinforcing assembly. The invention can reinforce the connection ends of the two cables, making the connection ends of the two cables more secure, so that when the cables are subjected to excessive tension, they are not easily disconnected from the docking position of the two cables, which is conducive to the stable transmission of electrical energy by the cables.

[0006] When the existing flame-retardant cable is accidentally damaged and the outer flame-retardant layer is damaged, its flame-retardant effect decreases, making it difficult to provide good protection for the cable. Adding a protective armor layer to the outside of the cable can easily affect the flexibility of the cable. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when the existing flame-retardant cable is accidentally damaged and the external flame-retardant layer is damaged, its flame-retardant effect is reduced, and it is not easy to provide good protection for the cable. Moreover, installing an armor layer with a protective effect on the outside of the cable can easily affect the flexibility of the cable.

[0008] In order to solve the above problems, the present invention provides an environmentally friendly flame-retardant cable, comprising a wire core, an insulating protective layer is fixedly connected to the outer side of the wire core, a shielding layer is coated on the outer side of the insulating protective layer, an outer insulating layer is arranged on the outer side of the shielding layer, a reinforcing wire row is passed between the shielding layer and the outer insulating layer, and the reinforcing wire row comprises a plurality of detection wires; the detection wire comprises a plurality of segmented pipelines, a thermistor is arranged in the segmented pipeline, the plurality of thermistors are connected in series through a wire, two adjacent segmented pipelines are connected through a hollow ring, and an overheating fuse connected to the wire is installed in the hollow ring;

[0009] A plurality of insulating protection lines parallel to the detection lines are arranged between two adjacent detection lines;

[0010] A plurality of evenly distributed auxiliary rings are sleeved on the outer insulating layer, and the auxiliary rings are embedded in the outer insulating layer and connected to the detection line. The auxiliary rings include a pair of main clamping rings inserted into the inner side of the outer insulating layer, and a plurality of pairs of evenly distributed inner ring bodies are installed at the inner ends of the main clamping rings. A terminal post for connecting the detection line is slidably connected inside the inner ring bodies, and a terminal head matching the terminal post is installed at the outer end of the main clamping ring. A stud is threadedly connected to the upper end of the terminal post, and the stud is rotatably connected to the main clamping ring. One end of the terminal head located in the main clamping ring is sleeved on the outside of the stud, and an elastic wire matching the terminal head is passed between the terminal post and the stud.

[0011] In the above-mentioned environmentally friendly flame-retardant cable, the outer layer of the cable is protected by strengthening the wire row, and the detection wire in the wire row is convenient to pass through.

[0012] As a further improvement of the present application, the insulating protection wire is made of a heat-insulating material, and a thermal conductive adhesive is filled between two adjacent insulating protection wires.

[0013] As a further improvement of the present application, a marking ring matching the position of the hollow ring is printed on the outer insulating layer, and the width of the marking ring is consistent with the length of the hollow ring.

[0014] As a further improvement of the present application, the detection line and the insulating protection line are respectively coated with identification coatings of different colors, and the coating colors at the segment pipeline and the hollow ring are different.

[0015] As another improvement of the present application, the shielding layer, the outer insulating layer and the insulating protection wire are all made of flame-retardant materials, the aperture of the wiring hole matches the outer diameter of the hollow ring, and the hollow ring is made of elastic flame-retardant material.

[0016] As another improved supplement of the present application, a nut rotatably connected to the main retaining ring is installed at the top of the stud, and a circular groove matching the nut is opened on the surface of the main retaining ring, and the depth of the circular groove is greater than the height of the nut.

[0017] As another improved supplement of the present application, the terminal head is arranged horizontally, a groove matching the terminal head is opened on the main clamping ring, a number is engraved at the opening of the groove, and a sealing cover is clamped on the groove.

[0018] As another improvement of the present application, one end of two adjacent wires close to the hollow ring is connected with a conductor sheet, and a pair of conductor sheets are inserted into the hollow ring and welded to the overheat fuse.

[0019] As another improvement of the present application, the connection heads of two adjacent main clamping rings are connected to an external power supply and a current monitor, and an ambient temperature monitor is installed on the main clamping ring.

[0020] A preparation method for an environmentally friendly flame-retardant cable includes the steps of installing an auxiliary ring, and the specific steps include:

[0021] A1, circumferentially cut and strip the outer insulation layer to expose the reinforced wire row;

[0022] A2, select the hollow ring at the appropriate position and cut it to expose the wire at the hollow ring. Then connect the exposed wire to the power pole;

[0023] A3, then a pair of auxiliary rings are clamped and fixed to the outer insulating layer, and the auxiliary ring 6 is sealed with the cut end of the outer insulating layer;

[0024] A4, after the initial installation of each pair of auxiliary rings, connect a pair of terminal blocks to electricity and detect and record the current value. The detected current value is written near the corresponding terminal block area.

[0025] In summary, this solution realizes segmented monitoring, detection and maintenance of the cable by setting a reinforced wire row in the cable and installing multiple auxiliary rings accordingly, which is convenient for quickly locating the overheating area when the cable overheats, and the inspection and maintenance are convenient and fast, which makes it easy to reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a stereogram of the first and second embodiments of the present application;

[0027] Figure 2 Partial exploded view of the first and second embodiments of the present application;

[0028] Figure 3 It is a cross-sectional view of the first and second embodiments of the present application;

[0029] Figure 4 This is a cross-sectional view of the auxiliary ring of the first and second embodiments of the present application;

[0030] Figure 5 for Figure 4 The structural diagram at A in the middle;

[0031] Figure 6 It is a cross-sectional view of the detection line of the first and second embodiments of the present application;

[0032] Figure 7 This is a schematic diagram of the installation of the auxiliary ring of the first embodiment of the present application;

[0033] Figure 8 This is a flow chart of the preparation method of the second embodiment of the present application.

[0034] Description of the numbers in the figure:

[0035] 1 wire core, 2 insulation protection layer, 3 shielding layer, 4 outer insulation layer, 5 detection line, 501 segment pipeline, 502 thermistor, 503 hollow ring, 504 conductor sheet, 51 insulation protection wire, 6 auxiliary ring, 601 main clamp ring, 602 inner ring body, 603 connection post, 604 terminal head, 605 stud. DETAILED DESCRIPTION

[0036] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0037] The first implementation method:

[0038] Figure 1-7 An environmentally friendly flame-retardant cable is shown, comprising a wire core 1, an insulating protective layer 2 is fixedly connected to the outer side of the wire core 1, a shielding layer 3 is coated on the outer side of the insulating protective layer 2, an outer insulating layer 4 is arranged on the outer side of the shielding layer 3, a reinforcing wire row is passed between the shielding layer 3 and the outer insulating layer 4, and the reinforcing wire row comprises a plurality of detection wires 5; the detection wire 5 comprises a plurality of segmented pipelines 501, a thermistor 502 is arranged in the segmented pipelines 501, a plurality of thermistors 502 are connected in series through a wire, two adjacent segmented pipelines 501 are connected through a hollow ring 503, an overheating fuse connected to the wire is installed in the hollow ring 503, the overheating fuse is a good conductor, when the temperature of the wire core 1 or the outside is too high, the overheating fuse is disconnected, and the detection wire 5 is powered off; a marking ring matching the position of the hollow ring 503 is printed on the outer insulating layer 4, and the width of the marking ring is consistent with the length of the hollow ring 503;

[0039] One end of two adjacent wires near the hollow ring 503 is connected with a conductor sheet 504. A pair of conductor sheets 504 are inserted into the hollow ring 503 and welded to the overheating fuse. The arrangement of the conductor sheet 504 is used to facilitate the connection post 603 to press the conductor sheet 504 tightly so that the connection between the connection post 603, the conductor sheet 504 and the wires is stable.

[0040] A plurality of insulating protection lines 51 parallel to the detection lines 5 are arranged between two adjacent detection lines 5;

[0041] A plurality of evenly distributed auxiliary rings 6 are sleeved on the outer insulating layer 4, and the auxiliary rings 6 are embedded in the outer insulating layer 4 and connected to the detection line 5. The auxiliary rings 6 include a pair of main clamping rings 601 inserted into the inner side of the outer insulating layer 4, and the inner ends of the main clamping rings 601 are equipped with a plurality of evenly distributed inner ring bodies 602. The inner ring bodies 602 are slidably connected with connecting posts 603 for connecting the detection line 5. The connecting posts 603 press the wires or conductor sheets 504 to achieve connection.

[0042] The outer end of the main clamp ring 601 is installed with a terminal head 604 matching the power post 603, the upper end of the power post 603 is threadedly connected with a stud 605, and the stud 605 is rotatably connected to the main clamp ring 601, and one end of the terminal head 604 located in the main clamp ring 601 is sleeved on the outside of the stud 605, and an elastic wire matching the terminal head 604 is passed between the power post 603 and the stud 605; the power post 603 is moved up and down by rotating the stud 605, and then the power post 603 is pressed against the wire or conductor sheet 504, so that the terminal head 604 is connected to the wire inside the detection line 5;

[0043] A nut rotatably connected to the main retaining ring 601 is installed at the top of the stud 605. A circular groove matching the nut is opened on the surface of the main retaining ring 601, and the depth of the circular groove is greater than the height of the nut.

[0044] The insulating protection wire 51 is made of heat-insulating material, and heat-conducting glue is filled between two adjacent insulating protection wires 51. The detection wire 5 and the insulating protection wire 51 are coated with identification coatings of different colors, and the coating colors at the segment pipeline 501 and the hollow ring 503 are different.

[0045] The shielding layer 3, the outer insulating layer 4 and the insulating protection wire 51 are all made of flame-retardant materials. The diameter of the wiring hole matches the outer diameter of the hollow ring 503, and the hollow ring 503 is made of elastic flame-retardant material.

[0046] The terminal head 604 is arranged horizontally, and a groove matching the terminal head 604 is provided on the main clamping ring 601, a number is engraved at the opening of the groove, and a sealing cover is clamped on the groove.

[0047] The connection heads 604 of two adjacent main clamp rings 601 are connected to an external power supply and a current monitor, and an ambient temperature monitor is installed on the main clamp ring 601 .

[0048] The cable of this solution is provided with multiple auxiliary rings 6, which divide the cable into multiple sections. Every two auxiliary rings 6 monitor or detect the cable of the section; the detection line 5 can be set to be connected to electricity or not connected to electricity.

[0049] The auxiliary ring 6 of this solution is embedded in the outer insulating layer 4 and connected to the detection line 5. During maintenance, the auxiliary ring 6 can be connected to electricity to detect the current size to detect whether the core temperature is overheated or whether it is too high.

[0050] This solution can facilitate temperature monitoring and overheating detection of the cable through the auxiliary ring 6, improving the safety performance and service life of the cable. At the same time, the cable also has excellent flame retardant properties, reducing the risk of fire.

[0051] In actual applications, the thermistor 502 in the detection line 5 can sense the temperature changes of the cable in real time. When the cable temperature rises abnormally, the resistance value of the thermistor 502 will change, thereby changing the resistance value of the entire detection line 5; by measuring the current value of the detection line 5, the temperature condition of the cable can be accurately judged; when the temperature is too high during the operation of the cable, the overheating fuse in the hollow ring 503 will melt, thereby cutting off the circuit of the detection line 5. If the auxiliary ring 6 is connected to the external monitoring system, when the detection system performs power-on detection on the detection line 5, it can quickly discover that the circuit of the detection line 5 is disconnected, thereby quickly triggering the alarm mechanism, so as to facilitate and promptly notify the staff to handle it.

[0052] In addition, the provision of the auxiliary ring 6 facilitates the inspection and maintenance of the cable, and the main clamp ring 601 can be removed from the outer insulating layer 4, thereby inspecting or replacing the detection line 5. At the same time, the provision of the terminal head 604 makes the connection between the external power supply and the current monitor more convenient, thereby improving the working efficiency.

[0053] The insulation protection wire 51 in the reinforced wire row is mainly used to protect against external damage. The thermal conductive glue filled in the insulation protection wire 51 can effectively improve the thermal conductivity of the cable, so that the heat inside the cable can be quickly dissipated to avoid overheating of the cable. The thermal insulation performance of the insulation protection wire 51 itself can protect the cable from the influence of external heat sources and ensure the normal operation of the cable.

[0054] The environmentally friendly flame-retardant cable provided in this embodiment not only has excellent safety performance and flame-retardant performance, but also facilitates the realization of cable temperature monitoring, early warning and rapid detection functions, thereby improving the reliability and service life of the cable; at the same time, the inspection and maintenance of the cable are also more convenient and quick, thereby reducing maintenance costs.

[0055] Second implementation method:

[0056] Figure 4-8 It is shown that a preparation method for environmentally friendly flame-retardant cables includes the steps of installing the auxiliary ring 6, and the specific steps include:

[0057] A1, circumferentially cut and peel the outer insulation layer 4 to expose the reinforced wire row;

[0058] A2, select the hollow ring 503 at the appropriate position and cut it to expose the wire at the hollow ring 503. At this time, connect the exposed wire to the power post 603; after any power post 603 is connected, the other power post 603 set in pair also needs to be connected;

[0059] A3, then a pair of auxiliary rings 6 are clamped and fixed to the outer insulating layer 4, and the auxiliary rings 6 and the cut ends of the outer insulating layer 4 are sealed;

[0060] A4, after each pair of auxiliary rings 6 is initially installed, a pair of wiring heads 604 are connected to electricity and the current value is detected and recorded, and the detected current value is written near the corresponding wiring head 604 area.

[0061] This second embodiment realizes the rapid installation and wiring of environmentally friendly flame-retardant cables, while ensuring the safety and flame-retardant properties of the cables. By circumferentially cutting and stripping the outer insulation layer 4, the reinforced wire row and the conductor can be easily exposed, which is convenient for wiring operations. When cutting the hollow ring 503, selecting a suitable position can ensure the exposure of the conductor, which is convenient for wiring with the power connection post 603. After the installation is completed, the connection of the terminal 604 is tested and the current value is recorded for numerical comparison and observation during subsequent testing, and it is also convenient for setting the threshold current reference when the external current monitoring device is connected.

[0062] In addition, the preparation method provided in this embodiment also takes into account the convenience of cable inspection and maintenance. The setting of the auxiliary ring 6 allows the cable to be divided into multiple sections, and every two auxiliary rings 6 monitor or detect the cable in the section, so as to facilitate the section inspection and maintenance of the cable; and there are no protrusions on the surface of the auxiliary ring 6, which is convenient for the installation of cable auxiliary installation equipment such as brackets and wire clamps, and is easy to adapt to different use environments;

[0063] At the same time, the arrangement of the terminal 604 makes it easier to connect the external power supply and the current monitor, thereby improving work efficiency. During the use of the cable, if a certain section of the cable has a problem, the corresponding auxiliary ring 6 can be removed for inspection or replacement without disassembling the entire cable, thereby reducing maintenance costs and time costs.

[0064] In summary, this solution realizes segmented monitoring, detection and maintenance of the cable by setting a reinforced wire row in the cable and installing multiple auxiliary rings accordingly, which is convenient for quickly locating the overheating area when the cable overheats, and the inspection and maintenance are convenient and fast, which makes it easy to reduce maintenance costs.

[0065] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An environmentally friendly flame-retardant cable, comprising a core (1), characterized in that: An insulating protective layer (2) is fixedly connected to the outer side of the wire core (1), a shielding layer (3) is coated on the outer side of the insulating protective layer (2), an outer insulating layer (4) is provided on the outer side of the shielding layer (3), a reinforcing wire row is passed between the shielding layer (3) and the outer insulating layer (4), the reinforcing wire row comprises a plurality of detection wires (5); the detection wires (5) comprise a plurality of segmented pipelines (501), a thermistor (502) is arranged in the segmented pipelines (501), a plurality of the thermistors (502) are connected in series via a wire, two adjacent segmented pipelines (501) are connected via a hollow ring (503), an overheat fuse connected to the wire is installed in the hollow ring (503); A plurality of insulating protection lines (51) parallel to the detection lines (5) are arranged between two adjacent detection lines (5); A plurality of evenly distributed auxiliary rings (6) are sleeved on the outer insulating layer (4), and the auxiliary rings (6) are embedded in the outer insulating layer (4) and connected to the detection line (5), the auxiliary rings (6) comprising a pair of main clamping rings (601) inserted into the inner side of the outer insulating layer (4), the inner ends of the main clamping rings (601) being provided with a plurality of evenly distributed inner ring bodies (602), the inner ends of the inner ring bodies (602) being slidably connected with electrical connection posts (603) for connecting the detection line (5), the main clamping rings (601) and the inner ends of the main clamping rings (601) being provided with electrical connection posts (603) for connecting the detection line (5). A connection head (604) matching the power connection post (603) is installed on the outer end of the clamping ring (601); a stud (605) is threadedly connected to the upper end of the power connection post (603); the stud (605) is rotatably connected to the main clamping ring (601); one end of the connection head (604) located inside the main clamping ring (601) is sleeved on the outside of the stud (605); and an elastic wire matching the connection head (604) is passed between the power connection post (603) and the stud (605).

2. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The insulating protection wires (51) are made of a heat-insulating material, and a heat-conducting adhesive is filled between two adjacent insulating protection wires (51).

3. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: A marking ring matching the position of the hollow ring (503) is printed on the outer insulating layer (4), and the width of the marking ring is consistent with the length of the hollow ring (503).

4. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The detection line (5) and the insulating protection line (51) are respectively coated with identification coatings of different colors, and the coating colors at the segment pipeline (501) and the hollow ring (503) are different.

5. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The shielding layer (3), the outer insulating layer (4) and the insulating protection wire (51) are all made of flame-retardant material; the diameter of the wiring hole matches the outer diameter of the hollow ring (503); and the hollow ring (503) is made of elastic flame-retardant material.

6. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: A nut rotatably connected to the main retaining ring (601) is mounted on the top of the stud (605); a circular groove matching the nut is formed on the surface of the main retaining ring (601); the depth of the circular groove is greater than the height of the nut.

7. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The terminal head (604) is arranged horizontally, and a groove matching the terminal head (604) is provided on the main clamping ring (601), a number is engraved at the opening of the groove, and a sealing cover is clamped on the groove.

8. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: One end of two adjacent wires close to the hollow ring (503) is connected to a conductor sheet (504), and a pair of conductor sheets (504) are both inserted into the hollow ring (503) and welded to the overheat fuse.

9. The environmentally friendly flame-retardant cable according to claim 1, characterized in that: The connection heads (604) of two adjacent main clamp rings (601) are both connected to an external power source and a current monitor, and an ambient temperature monitor is installed on the main clamp ring (601).

10. A method for preparing the environmentally friendly flame-retardant cable according to claim 9, characterized in that: The steps of installing the auxiliary ring (6) include: A1, circumferentially cut and strip the outer insulation layer (4) to expose the reinforcing wire row; A2, select the hollow ring (503) at the appropriate position and cut it to expose the wire at the hollow ring (503), and then connect the exposed wire to the power connection post (603); A3, a pair of auxiliary rings (6) are then clamped and fixed to the outer insulating layer (4), and the auxiliary rings 6 and the cut ends of the outer insulating layer (4) are sealed; A4, after each pair of auxiliary rings (6) are initially installed, a pair of wiring heads (604) are connected to electricity and the current value is detected and recorded, and the detected current value is written near the corresponding wiring head (604) area.

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