A lightweight control cable with good fire resistance and its usage method

Abstract

The present invention discloses a lightweight control cable with good fire resistance effect, which relates to the technical field of power cables. Two groups of control cable bodies are provided, and fire protection components are sleeved on the outer surfaces of the two groups of control cable bodies; the control cable body includes a cross-linked polyethylene insulating tube, and an anodized non-combustible core material composite sleeve is sleeved on the outer surface of the outer sheath. The anodized non-combustible core material composite sleeve is obtained by anodizing a thin aluminum tube. By selecting an insulating material with a lower dielectric constant to wrap the cable core, adding a braided copper shielding layer to reduce the capacitance distribution of the cable, and adjusting the arrangement of the cables during actual laying, such as reducing the capacitance distribution and increasing the reliability of the loop by increasing the interval between the cables or adopting a Z-shaped zigzag or S-shaped wiring method. Moreover, when laying the cable, an anodized non-combustible core material composite sleeve is sleeved on the outer surface of the cable in advance, which can improve the protection and fire resistance level of the cable.

Description

Technical Field

[0001] The present invention relates to the technical field of power cables, and particularly to a light control cable with good fire resistance effect. Background Art

[0002] Although the fire-resistant control cable has excellent fire resistance performance, it has many limitations in use, such as high price, limited adaptability to long-term high-temperature environment, high construction difficulty and complexity, relatively poor mechanical properties and corrosion resistance, and large weight and volume. Moreover, the existing control cable is also easily affected by the cable capacitance effect, and the loop reliability of signal transmission is poor, with certain defects.

[0003] The defects of the existing control cable are as follows:

[0004] 1. In the patent document CN219017290U, it mainly considers how to improve the anti-cut performance of the cable body, and does not consider that the existing control cable is also easily affected by the cable capacitance effect, and the loop reliability of signal transmission is poor;

[0005] 2. In the patent document CN211929127U, it mainly considers how to improve the heat conduction performance and shielding effect of the control cable, and does not consider the problem that the fire resistance and flame retardancy effect of the existing control cable still have limitations;

[0006] 3. In the patent document CN212874103U, it mainly considers how to improve the anti-interference protection of the cable core, and does not consider that the existing control cable does not protect the connection head, and the integrity of the line cannot be guaranteed in the case of flame combustion;

[0007] 4. In the patent document CN221040605U, it mainly provides protection for the cable by installing a polyethylene shell to increase the service life of the cable, and does not consider the problem that the existing control cable does not have a connection loosening monitoring structure during use, and the stability of signal transmission cannot be guaranteed. Summary of the Invention

[0008] The purpose of the present invention is to provide a light control cable with good fire resistance effect to solve the problems raised in the above background art.

[0009] To achieve the above purpose, the present invention provides the following technical solution: A light control cable with good fire resistance effect, including a control cable main body and a fire protection component. There are two groups of control cable main bodies, and fire protection components are sleeved on the outer surfaces of the two groups of control cable main bodies;

[0010] The control cable body includes a cross-linked polyethylene insulation tube. Uniformly arranged jacks are provided inside both groups of cross-linked polyethylene insulation tubes. A metal reinforcement and a cable core are fitted inside the jacks, and the cable cores and the metal reinforcements are distributed at intervals. A braided copper shielding layer is sleeved on the outer surface of the cross-linked polyethylene insulation tube. An outer sheath is sleeved on the outer surface of the braided copper shielding layer. An anodized non-combustible grade core material composite sleeve is sleeved on the outer surface of the outer sheath. The anodized non-combustible grade core material composite sleeve is obtained by anodizing a thin aluminum tube;

[0011] Connection protection components are installed on the surfaces of the two fire protection components close to each other, and the connection protection components are used to protect the connection part of the two control cable bodies.

[0012] Preferably, the fire protection component includes a fire-resistant protection sleeve sleeved on the surfaces of the two anodized non-combustible grade core material composite sleeves up and down. A limiting rod is installed at the bottom of the upper fire-resistant protection sleeve. A limiting hole is provided at the top of the lower fire-resistant protection sleeve, and the limiting hole is fitted with the limiting rod. Connection pieces are installed on the outer surfaces of the two fire-resistant protection sleeves, and the two connection pieces are connected by bolts. The two fire-resistant protection sleeves are of a cavity structure, and a flame retardant medium is filled in the cavities of the two fire-resistant protection sleeves.

[0013] Preferably, sockets and plug interfaces are respectively installed at one ends of the two control cable bodies close to each other. The plug interface and the socket are adapted to each other. An XPM fireproof expansion ring is sleeved on the outer surfaces of the plug interface and the socket. The connection protection component includes two joint protection sleeves sleeved on the outer surface of the XPM fireproof expansion ring.

[0014] Preferably, the connection protection component further includes clamping grooves provided on the surfaces of the two horizontal fire-resistant protection sleeves close to each other. Limiting grooves are provided on the rear walls of the two upper clamping grooves and the front walls of the two lower clamping grooves. Clamping blocks are installed inside the four clamping grooves. Limiting blocks are installed on the backs of the two upper clamping blocks and the fronts of the two lower clamping blocks, and the limiting blocks are fitted with the limiting grooves. The surfaces of the two clamping blocks close to each other are respectively connected to the surfaces of the two joint protection sleeves far from each other.

[0015] Preferably, the flame retardant medium includes dry powder one or flame retardant balls. The flame retardant balls are filled with a flame retardant, phenolic foam material or dry powder two.

[0016] Preferably, connection holes and connecting rods are respectively provided on the surfaces of the two joint protection sleeves close to each other. The connecting rod is fitted with the connection hole. A pressure sensor is embedded in one inner wall of the connection hole, and one outer wall of the pressure sensor is attached to one end of the connecting rod.

[0017] Preferably, the two joint protection sleeves are of a cavity structure, and phenolic foam filling blocks are filled in the cavities of the two joint protection sleeves.

[0018] Preferably, a fireproof coating is applied to the outer surface of the refractory protective sleeve, and waterproof adhesive tape is pasted at the connection of the two joint protective sleeves.

[0019] Preferably, the usage method of the light control cable is as follows:

[0020] S1. When laying the light control cable, first put the anodized non-combustible core material composite sleeve on the surface of the control cable main body, then put the refractory protective sleeve on the outer surface of the anodized non-combustible core material composite sleeve, and connect the connecting parts of the upper and lower refractory protective sleeves through bolts, so that the two refractory protective sleeves can wrap the anodized non-combustible core material composite sleeve;

[0021] S2. Then fix the joint protective sleeve on the socket and plug interfaces, insert the XPM fireproof expansion ring into the gap between the joint protective sleeve and the socket, and then push the two control cable main bodies closer to each other, so that the socket on one control cable main body can be connected to the plug interface on the other control cable main body;

[0022] S3. After connecting the two control cable main bodies, adjust the arrangement of the cables according to the construction requirements;

[0023] S4. During subsequent use, in case of a fire, if the refractory protective sleeve is burned through, the dry powder or flame retardant balls filled inside the refractory protective sleeve will be exposed at this time to delay the spread of the fire, and protect the control cable main body inside the anodized non-combustible core material composite sleeve, so that it can operate normally under the condition of flame combustion, thus ensuring the integrity of the line.

[0024] Preferably, in S2, it further includes:

[0025] S21. When connecting the socket and the plug interface, the connecting rod will be inserted into the inside of the connecting hole, and the connecting rod is fitted with the connecting hole. At the same time, the pressure sensor can detect the extrusion force from the connecting rod.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. By selecting an insulating material with a lower dielectric constant to wrap the cable core, and adding a braided copper shielding layer to reduce the capacitance distribution of the cable, and during actual laying, adjusting the arrangement of the cables according to actual needs, such as increasing the interval between cables or adopting a Z-shaped zigzag or S-shaped wiring method, thereby reducing the capacitance distribution and increasing the reliability of the loop, so as to reduce the capacitance effect of the cable. And when laying the cable, the anodized non-combustible core material composite sleeve is sleeved on the outer surface of the cable in advance, which can improve the protection of the control cable main body and improve the fire resistance level of the control cable main body.

[0028] 2. The present invention fixes two sets of connecting members together by bolts, enabling the fireproof protective sleeve to be fixed on the surface of the anodized non-combustible core material composite sleeve. During subsequent use, when the fireproof protective sleeve is burned through, the flame retardant medium arranged in its cavity will be exposed, playing a role in flame retardancy and fire extinguishing. The flame retardant medium is dry powder one or flame retardant balls. And through the design of the flame retardant balls, after the fireproof protective sleeve is burned out, the intact flame retardant balls can be reused, realizing the recycling of the flame retardant medium.

[0029] 3. After the present invention fixes the fireproof protective sleeve on the surface of the anodized non-combustible core material composite sleeve, then fixes the joint protective sleeve on the fireproof protective sleeve. Next, inserts the XPM fireproof expansion seal ring between the joint protective sleeve and the socket, and then fixes the joint protective sleeve on the socket and the plug interface through the engagement of the limiting block and the limiting groove, enabling the joint protective sleeve to protect the connection of the two sets of control cable bodies. And the XPM fireproof expansion seal ring is made of non-toxic fireproof expansion material, having good fireproof performance, heat insulation performance, weather resistance and moisture resistance, which can reduce the influence of the flame on the cable connection to a certain extent, thus ensuring the integrity of the line.

[0030] 4. The present invention monitors the connection looseness of the control cable through the setting of the pressure sensor, enabling it to receive the extrusion force from the connecting rod after connecting the two sets of control cable bodies, and sending a warning report to relevant staff when the pressure sensor cannot receive the pressure index, reminding that there is a connection looseness between the two sets of control cable bodies at this place, thereby improving the stability of cable signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the overall structural schematic diagram of the present invention;

[0032] Figure 2 is the planar assembly structural schematic diagram of the control cable body and the fireproof component of the present invention;

[0033] Figure 3 is the planar assembly structural schematic diagram of the flame retardant ball of the present invention;

[0034] Figure 4 is the connection assembly structural schematic diagram of the two sets of control cable bodies of the present invention;

[0035] Figure 5 is the longitudinal section assembly drawing of the XPM fireproof expansion seal ring and the joint protective sleeve of the present invention;

[0036] Figure 6 is the planar assembly structural schematic diagram of the two sets of fireproof protective sleeves of the present invention;

[0037] Figure 7Schematic diagram of the planar assembly structure of the connecting rod and the pressure sensor of the present invention;

[0038] Figure 8 Schematic diagram of the assembly structure of the fire prevention component and the connection protection component of the present invention;

[0039] Figure 9 Longitudinal sectional view of the joint protective sleeve of the present invention.

[0040] In the figure: 1, cross-linked polyethylene insulating tube; 2, metal reinforcement; 3, cable core; 4, braided copper shielding layer; 5, outer sheath; 6, anodized non-combustible grade core material composite sleeve; 7, fire-resistant protective sleeve; 8, limiting rod; 9, limiting hole; 10, connecting piece; 11, dry powder one; 12, flame retardant ball; 13, card slot; 14, limiting slot; 15, clamping block; 16, limiting block; 17, joint protective sleeve; 18, XPM fireproof expansion retaining ring; 19, connection hole; 20, connecting rod; 21, pressure sensor; 22, socket; 23, plug interface; 24, waterproof adhesive tape; 25, phenolic foam filling block; 26, fireproof coating. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Please refer to Figure 1 and Figure 2 For an embodiment provided by the present invention: a lightweight control cable with good fire resistance. There are two sets of control cable bodies, and fireproof components are sleeved on the outer surfaces of both sets of control cable bodies. The control cable body includes a cross-linked polyethylene insulation tube 1. Uniformly arranged jacks are provided inside both sets of cross-linked polyethylene insulation tubes 1. A metal reinforcement 2 and a cable core 3 are fitted and installed inside the jacks. The cable core 3 and the metal reinforcement 2 are distributed at intervals. A braided copper shielding layer 4 is sleeved on the outer surface of the cross-linked polyethylene insulation tube 1. An outer sheath 5 is sleeved on the outer surface of the braided copper shielding layer 4. An anodized non-combustible grade core material composite sleeve 6 is sleeved on the outer surface of the outer sheath 5. The anodized non-combustible grade core material composite sleeve 6 is obtained by anodizing a thin aluminum tube. Connection protection components are installed on the surfaces of the two fireproof components close to each other, and the connection protection components are used to protect the connection part of the two control cable bodies.

[0045] Furthermore, when manufacturing this lightweight control cable, an insulating material with a lower dielectric constant such as the cross-linked polyethylene insulation tube 1 is selected to wrap the cable core 3. Then, a braided copper shielding layer 4 is added to the outer surface of the cross-linked polyethylene insulation tube 1 to reduce the distribution of the capacitance of the control cable body and increase the reliability of the circuit. When laying the control cable body, the arrangement of the cables is adjusted according to construction needs, such as by increasing the spacing between the cables or adopting a Z-shaped zigzag or S-shaped wiring method, thereby reducing the capacitance distribution. After planning the cable arrangement method, an anodized non-combustible grade core material composite sleeve 6 is sleeved on the outer surface of the control cable body. The anodized non-combustible grade core material composite sleeve 6 is obtained by anodizing a thin aluminum tube, so that a high-hardness oxide film is formed on the surface of the thin aluminum tube, thereby making the thin aluminum tube have excellent wear resistance, durability and corrosion resistance, and the combustion performance reaches non-combustible grade A.

[0046] Please refer to Figure 2 、 Figure 3 and Figure 6 For an embodiment provided by the present invention: a lightweight control cable with good fire resistance. The fireproof component includes a fireproof protective sleeve 7 sleeved on the surfaces of the two anodized non-combustible grade core material composite sleeves 6 up and down. A limiting rod 8 is installed at the bottom of the upper fireproof protective sleeve 7. A limiting hole 9 is provided at the top of the lower fireproof protective sleeve 7, and the limiting hole 9 is fitted with the limiting rod 8. Connecting pieces 10 are installed on the outer surfaces of both sets of fireproof protective sleeves 7, and the two sets of connecting pieces 10 are connected by bolts. The two sets of fireproof protective sleeves 7 are of a cavity structure, and a flame retardant medium is filled in the cavities of the two sets of fireproof protective sleeves 7. The flame retardant medium includes dry powder one 11 or flame retardant balls 12. The inside of the flame retardant balls 12 is filled with a flame retardant, phenolic foam material or dry powder two.

[0047] Further, when laying this lightweight control cable, first, an anodized non-combustible core material composite sleeve 6 is sleeved on the surface of the control cable body. Then, a fire-resistant protective sleeve 7 is sleeved up and down on the surface of the anodized non-combustible core material composite sleeve 6. The connecting parts 10 on the two groups of fire-resistant protective sleeves 7 are aligned by the fitting of the limiting rod 8 and the limiting hole 9. Then, the two groups of connecting parts 10 are fixed together by bolts. Next, the fire-resistant protective sleeve 7 can be fixed on the surface of the anodized non-combustible core material composite sleeve 6. During subsequent use, when the fire-resistant protective sleeve 7 is burned through, the dry powder 11 or the flame retardant balls 12 arranged in its cavity will be exposed. When the flame retardant medium filled in the cavity of the fire-resistant protective sleeve 7 is dry powder 11, the dry powder 11 can leak out to extinguish the flame near the fire-resistant protective sleeve 7, thereby delaying the speed of flame combustion. When the flame retardant medium filled in the cavity of the fire-resistant protective sleeve 7 is flame retardant balls 12, the flame retardant balls 12 are burned through by fire, so that the flame retardant, phenolic foam material or dry powder 2 inside the flame retardant balls 12 flows out, playing a role in flame retardant and fire extinguishing. And through the design of the flame retardant balls 12, after the fire-resistant protective sleeve 7 is burned out, the intact flame retardant balls 12 can be reused to fill the cavity when producing the fire-resistant protective sleeve 7, achieving the effect of saving resources. And after the fire-resistant protective sleeve 7 is burned out, the bolts on the connecting part 10 can be unscrewed as needed, and the fire-resistant protective sleeve 7 on the burned-out circuit section can be replaced again. Through the design of the detachable fire protection component, the convenience of subsequent maintenance, disassembly and replacement can be improved to a certain extent.

[0048] Please refer to Figure 1 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8 For an embodiment provided by the present invention: a lightweight control cable with good fire resistance. Socket 22 and plug interface 23 are respectively installed at the ends of two groups of control cable bodies close to each other. The plug interface 23 and the socket 22 are adapted to each other. An XPM fireproof expansion retaining ring 18 is sleeved on the outer surfaces of the plug interface 23 and the socket 22. The connection protection component includes two groups of joint protection sleeves 17 sleeved on the outer surface of the XPM fireproof expansion retaining ring 18. A fireproof coating 26 is coated on the outer surface of the fire-resistant protective sleeve 7. Waterproof adhesive paper 24 is pasted at the connection of the two groups of joint protection sleeves 17. The connection protection component further includes a card slot 13 arranged on the mutually close surfaces of the two groups of horizontal fire-resistant protective sleeves 7. Limiting grooves 14 are arranged on the rear walls of the upper two groups of card slots 13 and the front walls of the lower two groups of card slots 13. Blocks 15 are installed inside the four groups of card slots 13. Limiting blocks 16 are installed on the backs of the upper two groups of blocks 15 and the fronts of the lower two groups of blocks 15. And the limiting blocks 16 are fitted with the limiting grooves 14. The mutually close surfaces of the two groups of blocks 15 are respectively connected with the mutually far surfaces of the two groups of joint protection sleeves 17.

[0049] Further, after fixing the fireproof protective sleeve 7 on the surface of the anodized non-combustible core material composite sleeve 6, then sleeving the joint protective sleeve 17 on the surfaces of the socket 22 and the plug interface 23, then inserting the XPM fireproof expansion ring 18 between the joint protective sleeve 17 and the socket 22, so that the XPM fireproof expansion ring 18 can be sleeved on the surface of the socket 22, and then pushing the latch 15 into the slot 13. At this time, the socket 22 on one set of control cable bodies can be plugged together with the plug interface 23 on the other set of control cable bodies. Then, rotate the joint protective sleeve 17 counterclockwise so that the limiting block 16 can be engaged with the limiting groove 14, and then the joint protective sleeve 17 can be fixed on the socket 22 and the plug interface 23. And a circle of waterproof tape 24 is pasted at the connection of the two sets of joint protective sleeves 17, so as to improve the sealing performance between the two sets of joint protective sleeves 17. Since the XPM fireproof expansion ring 18 is made of a non-toxic fireproof expansion material and has good fireproof performance, heat insulation performance, weather resistance and moisture resistance, it can improve the protection of the connection of the control cables to a certain extent.

[0050] Please refer to Figure 7 , an embodiment provided by the present invention: a light control cable with good fireproof effect. On the surfaces of the two sets of joint protective sleeves 17 close to each other, a connection hole 19 and a connecting rod 20 are respectively arranged. The connecting rod 20 is fitted with the connection hole 19. A pressure sensor 21 is embedded in the inner wall of one side of the connection hole 19, and the outer wall of one side of the pressure sensor 21 is in contact with one end of the connecting rod 20.

[0051] Further, after plugging the socket 22 on one set of control cable bodies together with the plug interface 23 on the other set of control cable bodies, the connecting rod 20 on one set of joint protective sleeves 17 can be inserted into the connection hole 19 on the other set of joint protective sleeves 17. At the same time, the pressure sensor 21 can receive the extrusion force from the connecting rod 20, and when the pressure sensor 21 cannot receive the pressure index, it will send a warning report to the relevant staff to remind that there is a loose connection between the two sets of control cable bodies at this place. By using the pressure sensor 21 to monitor the loosening of the control cable connection, the stability of the cable signal transmission is improved.

[0052] Please refer to Figure 9 , an embodiment provided by the present invention: a light control cable with good fireproof effect. The two sets of joint protective sleeves 17 are of a cavity structure, and phenolic foam filling blocks 25 are filled in the cavities of the two sets of joint protective sleeves 17.

[0053] Furthermore, the phenolic foam filling block 25 is prepared by using a fluorine-free foaming technology, which is light in weight, non-toxic and odorless, and has excellent flame retardancy, heat insulation, fire resistance and moisture resistance. By filling the phenolic foam filling block 25 inside the joint protective sleeve 17, it can avoid the influence of flames on the joint of the control cable main body and isolate the influence of part of the flame heat on the cable core 3 in the case of flame combustion, improving the stability of signal transmission of the control cable main body and the reliability of the circuit.

[0054] Working principle: When laying the light control cable, first put the anodized non-combustible core material composite sleeve 6 on the outer surface of the control cable main body, then put the fire-resistant protective sleeve 7 on the surface of the anodized non-combustible core material composite sleeve 6, and connect the connecting parts 10 of the upper and lower fire-resistant protective sleeves 7 through bolts. Then put the joint protective sleeve 17 on the surfaces of the socket 22 and the plug interface 23, and push the block 15 into the slot 13. Then rotate the joint protective sleeve 17 counterclockwise so that the limit block 16 can be engaged with the limit slot 14, and then the joint protective sleeve 17 can be fixed on the socket 22 and the plug interface 23. Then insert the XPM fireproof expansion ring 18 into the gap between the joint protective sleeve 17 and the socket 22, and push the two groups of control cable main bodies closer to each other so that the socket 22 on one group of control cable main bodies can be connected to the plug interface 23 on the other group of control cable main bodies. When connecting the socket 22 and the plug interface 23, the connecting rod 20 will be inserted into the inside of the connecting hole 19, and the connecting rod 20 is fitted with the connecting hole 19. At the same time, the pressure sensor 21 can detect the extrusion force from the connecting rod 20;

[0055] Finally, paste a circle of waterproof adhesive tape 24 on the surfaces of the two groups of joint protective sleeves 17, and adjust the arrangement of the cables according to the construction needs during the actual laying process. For example, by increasing the interval between the cables, the capacitive coupling effect between the cables can be reduced, or the Z-shaped zigzag or S-shaped wiring method can be adopted to reduce the parallel length between the cables, thereby reducing the capacitance distribution, and select an insulating material with a lower dielectric constant to wrap the cable core 3, and then add a braided copper shielding layer 4 to reduce the capacitance distribution of the control cable main body and increase the reliability of the circuit;

[0056] When using this light control cable, the sealing performance of the connection between the joint protective sleeves 17 is improved by the waterproof adhesive tape 24, and the connection condition between the socket 22 and the plug interface 23 can be monitored at all times through the setting of the pressure sensor 21, so as to ensure the stability of signal transmission. Moreover, in case of a fire, if the fire-resistant protective sleeve 7 is burned through, the dry powder 11 or the flame-retardant balls 12 filled inside the fire-resistant protective sleeve 7 will be exposed at this time to delay the spread of the fire and protect the control cable body inside the anodized non-combustible core material composite sleeve 6. At the same time, the cavity of the joint protective sleeve 17 is filled with phenolic foam filling blocks 25, which can also play a role in flame retardancy. Furthermore, it can protect the joint of the control cable body so that it can operate normally under the condition of flame combustion, thus ensuring the integrity of the line.

[0057] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A light control cable with good fire resistance, characterized by: It comprises a control cable body and a fireproof component, wherein the control cable body is provided with two groups, and the outer surfaces of the two groups of control cable bodies are both provided with a sleeve of the fireproof component; The control cable body comprises a cross-linked polyethylene insulating tube (1), the interiors of the two groups of cross-linked polyethylene insulating tubes (1) are both provided with evenly arranged jacks, the interiors of the jacks are fitted with metal reinforcements (2) and cable cores (3), the cable cores (3) and the metal reinforcements (2) are spaced apart, the outer surface of the cross-linked polyethylene insulating tube (1) is sleeved with a braided copper shielding layer (4), the outer surface of the braided copper shielding layer (4) is sleeved with an outer sheath (5), the outer surface of the outer sheath (5) is sleeved with an anodized non-combustible grade core material composite sleeve (6), the anodized non-combustible grade core material composite sleeve (6) being obtained by anodizing a thin aluminum tube; Connection protection components are installed on surfaces of the two groups of fire protection components that are close to each other, and the connection protection components are used to protect the connection between the two groups of control cable bodies.

2. A light control cable with good fire resistance according to claim 1, characterized in that: The fireproof assembly comprises fireproof protective sleeves (7) which are sleeved on the surfaces of two groups of anodized non-combustible grade core material composite sleeves (6) from top to bottom, a limiting rod (8) is installed at the bottom of the upper fireproof protective sleeve (7), a limiting hole (9) is arranged at the top of the lower fireproof protective sleeve (7), and the limiting hole (9) is engaged with the limiting rod (8), the outer surfaces of the two groups of fireproof protective sleeves (7) are installed with connecting pieces (10), and the two groups of connecting pieces (10) are connected by bolts, the two groups of fireproof protective sleeves (7) are hollow structures, and the cavities of the two groups of fireproof protective sleeves (7) are filled with flame retardant medium.

3. A light control cable with good fire resistance according to claim 2, characterized in that: A socket (22) and a plug interface (23) are respectively installed at one end of the two groups of control cable bodies that are close to each other. The plug interface (23) and the socket (22) are adapted to each other. The outer surfaces of the plug interface (23) and the socket (22) are sleeved with an XPM fireproof expansion retaining ring (18). The connection protection component includes two groups of joint protection sleeves (17) sleeved on the outer surface of the XPM fireproof expansion retaining ring (18).

4. A light control cable with good fire resistance according to claim 3, characterized in that: The connection protection assembly further comprises a card slot (13) arranged on the mutually adjacent surfaces of the two horizontal groups of fire-resistant protection sleeves (7); the rear walls of the two upper groups of card slots (13) and the front walls of the two lower groups of card slots (13) are both provided with a limiting slot (14); card blocks (15) are installed inside the four groups of card slots (13); the rear surfaces of the two upper groups of card blocks (15) and the front surfaces of the two lower groups of card blocks (15) are both provided with a limiting block (16); the limiting block (16) is engaged with the limiting slot (14); and the mutually adjacent surfaces of the two groups of card blocks (15) are respectively connected to the mutually distant surfaces of the two groups of joint protection sleeves (17).

5. A light control cable with good fire resistance according to claim 2, characterized in that: The flame retardant medium comprises dry powder 1 (11) or a flame retardant ball (12), and the interior of the flame retardant ball (12) is filled with a flame retardant or a phenolic foam material or dry powder 2.

6. A light control cable with good fire resistance according to claim 3, characterized in that: The surfaces of the two groups of joint protective sleeves (17) close to each other are respectively provided with a connecting hole (19) and a connecting rod (20), the connecting rod (20) is fitted with the connecting hole (19), a pressure sensor (21) is embedded in an inner wall of one side of the connecting hole (19), and an outer wall of one side of the pressure sensor (21) is fitted with one end of the connecting rod (20).

7. A light control cable with good fire resistance according to claim 3, characterized in that: The two groups of joint protection sleeves (17) are hollow structures, and the hollow spaces of the two groups of joint protection sleeves (17) are filled with phenolic foam filling blocks (25).

8. A light control cable with good fire resistance according to claim 3, characterized in that: The outer surface of the fire-resistant protective sleeve (7) is coated with a fire-resistant coating (26), and the joints of the two sets of joint protective sleeves (17) are pasted with waterproof adhesive tape (24).

9. The method for using a light-weight control cable with good fire resistance according to any one of claims 1 to 6, characterized in that: The use of light control cables is as follows: S1. When laying a light control cable, firstly, the anodized non-combustible grade core material composite casing (6) is sheathed on the surface of the control cable body, and then the fire-resistant protective casing (7) is sheathed on the outer surface of the anodized non-combustible grade core material composite casing (6), and the connecting pieces (10) of the upper and lower fire-resistant protective casings (7) are connected by bolts, so that the two sets of fire-resistant protective casings (7) can wrap the anodized non-combustible grade core material composite casing (6); S2, then fix the joint protective sleeve (17) on the socket (22) and the plug interface (23), and insert the XPM fireproof expansion retaining ring (18) into the gap between the joint protective sleeve (17) and the socket (22), and then push the two groups of control cable bodies closer to each other so that the socket (22) on one group of control cable bodies can be connected to the plug interface (23) on the other group of control cable bodies; S3. After connecting the two sets of control cable bodies, adjust the arrangement of the cables according to construction needs; S4. In the subsequent use process, when a fire occurs, if the fire-resistant protective sleeve (7) is burned through, the dry powder (11) or flame-retardant balls (12) filled inside the fire-resistant protective sleeve (7) will be exposed to slow down the spread of the fire and protect the control cable body in the anodized non-combustible grade core composite sleeve (6), so that it can maintain normal operation in the case of flame burning, thereby ensuring the integrity of the line.

10. The method for using a light-weight control cable with good fire resistance according to claim 9, characterized in that: In S2, it also includes: S21, when the socket (22) and the plug interface (23) are connected, the connecting rod (20) is inserted into the interior of the connecting hole (19), and the connecting rod (20) is engaged with the connecting hole (19), and at the same time, the pressure sensor (21) can detect the squeezing force from the connecting rod (20).

Images