Flame-retardant cable for control cabinet
By setting up the barrier layer and flame retardant layer in the cable, the multi -layer structural material is used to solve the problem of poor flame retardant effects and insufficient fire resistance of existing cables, which significantly improves the flame retardant effect and fire resistance of the cable, which improves Safety.
Patent Information
- Application Number
- CN202421117427.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The existing flame retardant cables have poor flame retardant effects during use, insufficient fire resistance, and are prone to damage in fire, resulting in low safety.
By setting up the barrier layer and flame retardant layer in the cable, the heating layer, supporting rack, flame retardant layer, and expansion flame retardant are used to form a multi -layer structure to effectively block the flames and high temperatures.
It significantly improves the flame retardant effect and fire resistance of the cable, prolongs the service life of cables in high temperature environments, improves the safety of cables, and avoids the problem of easily damaging cables in fire.
Smart Images
Figure CN222421434U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flame-retardant cables, in particular to a flame-retardant cable for a control cabinet. Background Art
[0002] The control cabinet is a combination of switchgear, measuring instruments, protective electrical appliances and auxiliary equipment assembled in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirements. Its layout should meet the requirements for normal operation of the power system, be easy to inspect and repair, and not endanger the safety of people and surrounding equipment. During normal operation, the circuit can be connected or disconnected with the help of manual or automatic switches. When the control cabinet is in use, it needs to be connected with flame-retardant cables to make it safer when in use;
[0003] Flame-retardant cables refer to cables that, under specified test conditions, can be burned by the sample. After the test fire source is removed, the spread of the flame is limited to a limited range, and the residual flame or residual burning can be extinguished within a limited time. The basic characteristics are: in the event of a fire, it may be burned and unable to operate, but the spread of the fire can be prevented. In layman's terms, if the wire catches fire, the burning can be limited to a local range, preventing it from spreading, thus saving various other equipment and avoiding greater losses.
[0004] Most of the existing flame-retardant cables use flame-retardant cloth and materials to achieve the flame-retardant effect. However, during use, the flame-retardant effect is poor. Although the spread of fire can be controlled, the fire resistance itself is poor. When encountering a fire, the cable will be damaged. Not only is the flame-retardant effect poor, but the safety is also low. Utility Model Content
[0005] The purpose of the utility model is to provide a flame-retardant cable for a control cabinet. Through the cooperation of the barrier layer and the flame-retardant layer, the flame can be effectively blocked, so that the cable can last longer in a high-temperature environment without being damaged, thereby protecting the battery core, which not only improves the flame-retardant effect of the cable, but also improves the fire resistance of the cable, and the safety is also effectively improved, solving the problem that the existing cables have poor flame-retardant effect and are prone to damage during use.
[0006] To achieve the above object, the utility model provides the following technical solution: a flame-retardant cable for a control cabinet, comprising a filling layer and a battery core installed therein, and also comprising:
[0007] A heat insulation layer is arranged on the surface of the filling layer, a support frame for improving the tensile resistance of the heat insulation layer is arranged inside the heat insulation layer, and a flame retardant layer is arranged on the surface of the heat insulation layer;
[0008] The barrier layer is arranged on the surface of the flame retardant layer, the surface of the flame retardant layer is fixedly connected with a positioning plate, and the inner wall of the barrier layer is provided with a connecting groove used in conjunction with the positioning plate.
[0009] Preferably, the inner wall of the heat insulation layer is fixedly connected to the surface of the filling layer, and the material of the heat insulation layer is glass fiber.
[0010] Preferably, the surface of the support frame is fixedly connected to the heat insulation layer, and the material of the support frame is carbon fiber.
[0011] Preferably, the inner wall of the flame retardant layer is fixedly connected to the surface of the heat insulation layer, and the flame retardant layer is made of magnesium hydroxide.
[0012] Preferably, the inner wall of the barrier layer is fixedly connected to the surface of the flame retardant layer, and the barrier layer is an intumescent flame retardant.
[0013] Preferably, the positioning plate is designed as a wedge-shaped structure, and the number of the positioning plates is several and they are all distributed in a circular array at the center of the flame retardant layer.
[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0015] The utility model can effectively block the flame through the cooperation of the barrier layer and the flame retardant layer, so that the cable can last longer in a high-temperature environment without being damaged, and the high temperature can be blocked under the action of the heat insulation layer, so as to protect the battery core, which not only improves the flame retardant effect of the cable, but also improves the fire resistance of the cable, and the safety is also effectively improved, thus solving the problem that the existing cables have poor flame retardant effect and are prone to damage when in use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0017] Figure 2 It is a schematic diagram of a partial three-dimensional unfolded structure in the utility model;
[0018] Figure 3 It is a schematic diagram of a partial three-dimensional cross-section structure of the present utility model;
[0019] Figure 4 It is a schematic diagram of a local three-dimensional cross-sectional structure in the utility model.
[0020] In the figure: 1. filling layer; 2. battery cell; 3. thermal insulation layer; 4. support frame; 5. flame retardant layer; 6. positioning plate; 7. barrier layer; 8. connection groove. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See also Figure 1-4As shown, a flame retardant cable for a control cabinet includes a filling layer 1, which is of flexible design. A battery core 2 is installed inside the filling layer 1. The battery core 2 can be separated by the filling layer 1, so that each battery core 2 will not contact each other, thereby avoiding the battery cores 2 from contacting each other and affecting the use of the cable. A heat insulation layer 3 is arranged on the surface of the filling layer 1, and the inner wall of the heat insulation layer 3 is fixedly connected to the surface of the filling layer 1. The material of the heat insulation layer 3 is glass fiber. Under the effect of the material of the heat insulation layer 3 itself, the cable has good heat resistance and corrosion resistance, so that when a fire occurs in the outside world during use, the heat insulation layer 3 can be exposed to the outside world. The high temperature of the interface is isolated to protect the filling layer 1 and the battery core 2 inside it, so as to prevent the battery core 2 from being easily exposed to the outside, thereby improving the safety of the cable when in use. A support frame 4 is arranged inside the thermal insulation layer 3, and the surface of the support frame 4 is fixedly connected to the thermal insulation layer 3. The material of the support frame 4 is carbon fiber. Under the action of the material of the support frame 4, the tensile strength of the thermal insulation layer 3 can be effectively improved to prevent the thermal insulation layer 3 from being easily damaged when the cable is in use, and the tensile strength of the thermal insulation layer 3 is effectively improved, thereby improving the flame retardant effect of the cable. The surface of the thermal insulation layer 3 is provided with a flame retardant layer 5, and the inner wall of the flame retardant layer 5 is fixed to the thermal insulation layer 3. The surface of the heat-insulating layer 3 is fixedly connected, and the flame-retardant layer 5 is made of magnesium hydroxide. Under the action of the material, water can be decomposed when heated, thereby absorbing a large amount of latent heat to reduce its own surface temperature in the flame, and has the function of inhibiting the decomposition of the polymer and cooling the generated combustible gas. The surface of the flame-retardant layer 5 is provided with a barrier layer 7, and the inner wall of the barrier layer 7 is fixedly connected to the surface of the flame-retardant layer 5. The barrier layer 7 is an intumescent flame retardant, which can foam and expand after being heated to form a porous foam coke layer, thereby isolating the temperature and effectively protecting the parts and materials inside the barrier layer 7, thereby improving the flame-retardant effect of the cable. A positioning plate 6 is fixedly connected to the surface of the flame retardant layer 5. The positioning plate 6 is a wedge-shaped structure. There are several positioning plates 6, which are distributed in a circular array at the center of the flame retardant layer 5. A connecting groove 8 is opened on the inner wall of the barrier layer 7. The inner wall of the connecting groove 8 is fixedly connected to the surface of the positioning plate 6. Under this action, the positioning plate 6 can be embedded in the interior of the connecting groove 8, thereby further fixing the barrier layer 7 so that it will not be easily separated from the surface of the flame retardant layer 5, effectively improving the stability of the barrier layer 7 during use, and with the cooperation of the positioning plate 6, it can also increase the tensile strength of the cable, thereby improving the applicability of the cable.
[0023] It is worth noting that the technical features such as the filling layer 1 and the battery cell 2 proposed in this technical solution should be regarded as the prior art. The specific structure, working principle, and possible control method and spatial arrangement method of these technical features can be selected according to the conventional methods in the field, and this technical solution will not be further elaborated.
[0024] Working principle: First, when the cable encounters a fire, the temperature of the flame will first be transmitted to the surface of the barrier layer 7, and under the action of the barrier layer 7, it can expand to form a protective layer, thereby blocking the high temperature and improving the flame retardant effect of the cable. At the same time, the flame retardant layer 5 will decompose water when subjected to high temperature, thereby improving the flame retardant effect of the cable and preventing the battery core 2 from being easily exposed to the outside. At the same time, with the cooperation of the thermal insulation layer 3, the temperature can be blocked to prevent the filling layer 1 from melting under high temperature conditions.
[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A flame-retardant cable for a control cabinet, comprising a filling layer (1) and a battery core (2) installed inside the filling layer, characterized in that: Also includes: A heat insulation layer (3) is arranged on the surface of the filling layer (1), a support frame (4) for improving the tensile resistance of the heat insulation layer (3) is arranged inside the heat insulation layer (3), and a flame retardant layer (5) is arranged on the surface of the heat insulation layer (3); A barrier layer (7) is arranged on the surface of the flame retardant layer (5), a positioning plate (6) is fixedly connected to the surface of the flame retardant layer (5), and a connection groove (8) for use with the positioning plate (6) is provided on the inner wall of the barrier layer (7).
2. A flame-retardant cable for a control cabinet according to claim 1, characterized in that: The inner wall of the heat insulation layer (3) is fixedly connected to the surface of the filling layer (1), and the material of the heat insulation layer (3) is glass fiber.
3. The flame-retardant cable for control cabinet according to claim 1, characterized in that: The surface of the support frame (4) is fixedly connected to the heat insulation layer (3), and the material of the support frame (4) is carbon fiber.
4. The flame-retardant cable for a control cabinet according to claim 1, characterized in that: The inner wall of the flame retardant layer (5) is fixedly connected to the surface of the heat insulation layer (3), and the flame retardant layer (5) is made of magnesium hydroxide.
5. The flame-retardant cable for a control cabinet according to claim 1, characterized in that: The inner wall of the barrier layer (7) is fixedly connected to the surface of the flame retardant layer (5), and the barrier layer (7) is an intumescent flame retardant.
6. The flame-retardant cable for a control cabinet according to claim 1, characterized in that: The positioning plate (6) is designed as a wedge-shaped structure. There are a plurality of positioning plates (6) which are distributed in a circular array at the center of the flame retardant layer (5).