Metal sheath mineral insulation fireproof cable

By installing heat-insulating assembly blocks and sensors in fire-resistant cables, the problem of existing fire-resistant cables being unable to detect cable overheating or flames in a timely manner is solved, enabling real-time monitoring and flexible installation of cables and reducing fire risk.

CN224137918UActive Publication Date: 2026-04-17JIANGXI EVERGRANDE CABLE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGXI EVERGRANDE CABLE CO LTD
Filing Date
2025-05-19
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing fire-resistant cables cannot detect overheating or other potential risks during cable operation in a timely manner, making it difficult to detect fire hazards and causing inconvenience in use.

Method used

A metal-sheathed mineral-insulated fireproof cable was designed. By installing heat-insulating assembly blocks between wear-resistant blocks for limiting, and combining temperature sensors and flame sensors, the cable temperature and flame can be detected in real time, and a buzzer alarm and alarm light can be used to provide prompts.

Benefits of technology

It enables timely detection of cable temperature and flame, reduces fire risk, improves safety and flexibility of use, and facilitates the installation of sensors in different locations according to different situations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the cable field, and especially relates to a metal sheath mineral insulation fireproof cable. The utility model provides the mineral insulated fireproof cable with the metal sheath, which can clamp the heat insulation assembly block between the wear-resistant blocks for limiting, simultaneously install the sensor for detection, prevent the displacement of the sensor during monitoring, and be conveniently installed at different positions for use according to different conditions, and is flexible and convenient to use. A metal sheath mineral insulation fireproof cable comprises battery cells, a filling layer and the like, and the inner side of the filling layer is connected with a plurality of battery cells. According to actual conditions, the heat insulation assembly block is clamped between the wear-resisting blocks at the proper positions for installation, the wear-resisting blocks are used for limiting, and then the sensor is used for detecting temperature and flame, so that the heat insulation assembly block can be clamped between the wear-resisting blocks for limiting, and meanwhile, the sensor is installed for detection and use; the sensor is prevented from shifting during monitoring, can be conveniently installed at different positions for use according to different conditions, and is flexible and convenient to use.
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Description

Technical Field

[0001] This utility model relates to the field of cables, and in particular to a metal-sheathed mineral-insulated fireproof cable. Background Technology

[0002] Fire-resistant cables, also known as fire-resistant or flame-retardant cables, are special cables that can maintain normal operation for a certain period of time in the event of a fire. The main feature of these cables is their excellent fire resistance, which allows them to work continuously in flames for a period of time, ensuring that critical circuits such as alarm systems, emergency lighting, and smoke extraction systems can still operate normally during a fire, thus buying valuable time for personnel evacuation and fire fighting and rescue.

[0003] The current use of fire-resistant cables typically involves installing them inside building walls or other specific locations to improve building safety and circuit reliability. However, current fire-resistant cables lack detection capabilities and cannot be specifically tested. Overheating or other potential risks that may occur during cable operation are difficult to detect in a timely manner. Inadequate detection can easily lead to fires, making their use very inconvenient.

[0004] Therefore, it is necessary to design a metal-sheathed mineral-insulated fireproof cable that can simultaneously lock the heat insulation assembly block between the wear-resistant blocks for positioning and install sensors for detection, prevent sensor displacement during monitoring, facilitate installation in different positions according to different situations, and provide flexibility and convenience. Utility Model Content

[0005] To overcome the shortcomings of current fire-resistant cables, such as lack of detection capabilities, inability to perform targeted inspections, difficulty in timely detection of overheating or other potential risks during cable operation, and the potential for fires due to inadequate detection, this invention provides a metal-sheathed mineral-insulated fire-resistant cable that can simultaneously install sensors for detection while locking the insulation assembly block between the wear-resistant blocks for positioning. This prevents sensor displacement during monitoring, facilitates installation in different locations according to different situations, and offers flexibility and convenience in use.

[0006] The technical solution of this utility model is as follows: a metal-sheathed mineral-insulated fireproof cable, comprising a battery core, a metal sheath, wear-resistant blocks, a fireproof layer, a first mineral insulation layer, a shock-absorbing layer, a second mineral insulation layer, a filling layer, and a detection component. Multiple battery cores are connected to the inner side of the filling layer, the second mineral insulation layer is connected to the outer side of the filling layer, the shock-absorbing layer is connected to the outer side of the second mineral insulation layer, the first mineral insulation layer is connected to the outer side of the shock-absorbing layer, the fireproof layer is connected to the outer side of the first mineral insulation layer, the metal sheath is connected to the outer side of the fireproof layer, and multiple integrally formed wear-resistant blocks are connected to the outer side of the metal sheath. A detection component for detecting and indicating temperature and flame is provided on the left side of the metal sheath.

[0007] In a preferred embodiment of this invention, the wear-resistant blocks are evenly distributed along the metal sheath.

[0008] In a preferred embodiment of this invention, the diameter of the first mineral insulating layer is larger than the diameter of the second mineral insulating layer.

[0009] In a preferred embodiment of this utility model, the detection component includes an insulating assembly block, a buzzer alarm, a temperature sensor, a flame sensor, and an alarm light. The left side of the metal sheath is fitted with two insulating assembly blocks, which are interlocked with each other. Each insulating assembly block is in contact with an adjacent wear-resistant block. The lower front side of the front insulating assembly block is connected to a buzzer alarm, the upper front side of the front insulating assembly block is connected to a temperature sensor, the upper side of the front insulating assembly block is connected to a flame sensor, and the upper side of the rear insulating assembly block is connected to an alarm light.

[0010] In a preferred embodiment of this utility model, an assembly hole is provided at the upper front part of the rear heat insulation assembly block.

[0011] In a preferred embodiment of the present invention, a heat-conducting block is also included. The heat-conducting block is connected to the inner side of the front heat insulation assembly block, and the heat-conducting block is in contact with the metal sheath.

[0012] The present invention has the following advantages: 1. Based on the actual situation, the present invention installs the heat insulation assembly block between the wear-resistant blocks in a suitable position, limits the position of the wear-resistant blocks, and then detects the temperature and flame through the sensor. This allows the heat insulation assembly block to be limited between the wear-resistant blocks while the sensor is installed for detection, preventing the sensor from shifting during monitoring. It is also convenient to install the heat insulation assembly block in different positions according to different situations, making it flexible and convenient to use.

[0013] 2. This utility model uses a temperature sensor to detect the temperature of the metal sheath. When the temperature is high, a buzzer alarm sounds. At the same time, a flame sensor detects flame or light radiation. When detected, an alarm light illuminates. This allows for timely detection and alerts regarding the cable's temperature and flame, enabling operators to take timely measures to prevent fires, reduce the risk of injury, and improve safety during use. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the battery cell and filling layer components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the thermal insulation assembly block and heat-conducting block of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the flame sensor and other components of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the metal sheath and other components of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1_battery cell, 2_metal sheath, 3_wear-resistant block, 4_thermal insulation assembly block, 5_buzzer alarm, 6_temperature sensor, 7_flame sensor, 8_alarm light, 9_fireproof layer, 10_first mineral insulation layer, 11_shock-absorbing layer, 12_second mineral insulation layer, 13_heat-conducting block, 14_assembly hole, 15_filler layer. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "setting," "installing," "connecting," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0021] A metal-sheathed, mineral-insulated, fire-resistant cable, such as Figures 1-5As shown, the device includes a battery cell 1, a metal sheath 2, wear-resistant blocks 3, a fireproof layer 9, a first mineral insulation layer 10, a shock-absorbing layer 11, a second mineral insulation layer 12, a heat-conducting block 13, a filling layer 15, and a detection component. Four battery cells 1 are connected to the inner side of the filling layer 15. The second mineral insulation layer 12 is connected to the outer side of the filling layer 15. The shock-absorbing layer 11 is connected to the outer side of the second mineral insulation layer 12. The first mineral insulation layer 10 is connected to the outer side of the shock-absorbing layer 11. The diameter of the first mineral insulation layer 10 is larger than the diameter of the second mineral insulation layer 12. The fireproof layer 9 is connected to the outer side of the first mineral insulation layer 10. The metal sheath 2 is connected to the outer side of the fireproof layer 9. Thirty-two integrally formed wear-resistant blocks 3 are connected to the outer side of the metal sheath 2. The wear-resistant blocks 3 are evenly distributed along the metal sheath 2. The left side of the metal sheath 2 is provided with a device for... A detection component for detecting temperature and flame includes an insulating assembly block 4, a buzzer alarm 5, a temperature sensor 6, a flame sensor 7, and an alarm light 8. The metal sheath 2 has two insulating assembly blocks 4, one at the front and one at the back, fitted onto its left side. These insulating assembly blocks 4 interlock and contact adjacent wear-resistant blocks 3. The buzzer alarm 5 is connected to the lower front side of the front insulating assembly block 4, the temperature sensor 6 is connected to the upper front side of the front insulating assembly block 4, and the flame sensor 7 is connected to the upper side of the front insulating assembly block 4. The alarm light 8 is connected to the upper side of the rear insulating assembly block 4. A heat-conducting block 13 is connected to the inner side of the front insulating assembly block 4, and the heat-conducting block 13 contacts the metal sheath 2 for heat conduction detection. An assembly hole 14 is provided at the upper front of the rear insulating assembly block 4 for easy installation.

[0022] When the metal sheath 2 mineral-insulated fireproof cable needs to be used, this device can be used. During construction, the metal sheath 2 is lifted and installed, followed by the installation of the fireproof layer 9, the first mineral insulation layer 10, the shock-absorbing layer 11, the second mineral insulation layer 12, and the filling layer 15. The fireproof layer 9 provides fire protection, and the shock-absorbing layer 11 provides shock absorption. The diameter of the first mineral insulation layer 10 is larger than that of the second mineral insulation layer 12. After installation, depending on the actual situation, the heat-insulating assembly blocks 4 are clamped between the wear-resistant blocks 3, so that the heat-insulating assembly blocks 4 interlock with each other. Then, bolts are inserted into the assembly holes 14 for fixation, and the wear-resistant blocks 3 provide limiting. The wear-resistant blocks 3 are evenly distributed along the metal sheath 2. Then, heat is conducted through the heat-conducting blocks 13. The temperature of the metal sheath 2 is detected by the temperature sensor 6. When the temperature is high, the buzzer alarm 5 sounds to indicate that the cable is in danger. In the event of a fire, the flame sensor 7 detects the flame or light radiation. When a flame is detected, the alarm light 8 illuminates to provide a warning. This allows for timely detection and alerts regarding the cable's temperature and flame, facilitating prompt action by operators to prevent fires, reduce the risk of injury, and improve safety. When other locations on the cable need to be inspected, the bolts are removed, and the insulation assembly block 4 is removed, securing it between the two wear-resistant blocks 3 in other locations. This process is repeated for installation and inspection. This method allows the insulation assembly block 4 to be positioned between the wear-resistant blocks 3 while simultaneously installing the sensor for detection, preventing sensor displacement during monitoring. It allows for flexible and convenient installation in different locations depending on the situation. After use, the bolts are removed, the insulation assembly block 4 is removed, and then the temperature sensor 6, the flame sensor 7, the buzzer alarm 5, and the alarm light 8 are removed.

[0023] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. A metal-sheathed mineral-insulated fire-resistant cable, characterized by: It includes a battery cell (1), a metal sheath (2), a wear-resistant block (3), a fireproof layer (9), a first mineral insulation layer (10), a shock-absorbing layer (11), a second mineral insulation layer (12), a filling layer (15), and a detection component. Multiple battery cells (1) are connected to the inside of the filling layer (15), the second mineral insulation layer (12) is connected to the outside of the filling layer (15), the shock-absorbing layer (11) is connected to the outside of the second mineral insulation layer (12), the first mineral insulation layer (10) is connected to the outside of the shock-absorbing layer (11), the fireproof layer (9) is connected to the outside of the first mineral insulation layer (10), the metal sheath (2) is connected to the outside of the fireproof layer (9), and multiple integrally formed wear-resistant blocks (3) are connected to the outside of the metal sheath (2). A detection component for detecting and indicating temperature and flame is provided on the left side of the metal sheath (2).

2. A metal-sheathed mineral-insulated fire-resistant cable according to claim 1, characterised in that: The wear-resistant blocks (3) are evenly distributed along the metal sheath (2).

3. A metal-sheathed mineral-insulated fire-resistant cable according to claim 1, characterized in that: The diameter of the first mineral insulating layer (10) is larger than the diameter of the second mineral insulating layer (12).

4. The metal-sheathed mineral-insulated fire-resistant cable according to claim 1, characterized in that: The detection components include an insulating assembly block (4), a buzzer alarm (5), a temperature sensor (6), a flame sensor (7), and an alarm light (8). The metal sheath (2) has two insulating assembly blocks (4) on the left side, which are interlocked. Each insulating assembly block (4) is in contact with the adjacent wear-resistant block (3). The lower front side of the front insulating assembly block (4) is connected to a buzzer alarm (5), the upper front side of the front insulating assembly block (4) is connected to a temperature sensor (6), the upper side of the front insulating assembly block (4) is connected to a flame sensor (7), and the upper side of the rear insulating assembly block (4) is connected to an alarm light (8).

5. A metal-sheathed mineral-insulated fire-resistant cable according to claim 4, characterised in that: The rear heat insulation assembly block (4) has an assembly hole (14) at the upper front.

6. A metal-sheathed mineral-insulated fire-resistant cable according to claim 4, characterised in that: It also includes a heat-conducting block (13), and the heat-conducting block (13) is connected to the inner side of the front heat insulation assembly block (4), and the heat-conducting block (13) is in contact with the metal sheath (2).