Mineral insulated flexible cable

Abstract

The utility model relates to the technical field of insulated cables, and discloses a mineral insulated flexible cable, which comprises a cable body and a bottom semi-environment-friendly protective cover, and a top semi-environment-friendly protective cover is rotatably mounted on the bottom semi-environment-friendly protective cover. The cross section of the bottom semi-environment-friendly shield and the cross section of the top semi-environment-friendly shield can be jointly spliced to form a ring body matched with the cross section of the cable body, fixing blocks are fixedly installed on the cable body, installation rings are installed in the fixing blocks in a sliding mode, the adjacent installation rings are oppositely arranged, and connecting blocks are fixedly installed on the installation rings. The inner circle of the mounting ring is matched with the cylindrical cross section formed by the bottom semi-environment-friendly protective cover and the top semi-environment-friendly protective cover, and a driving mechanism is arranged in the fixing block. According to the utility model, by enhancing mechanical protection, optimizing sealing performance, simplifying installation and maintenance, improving adaptability and reducing electromagnetic interference, the safety and reliability of the cable in a complex environment are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of insulated cable technology, specifically a mineral-insulated flexible cable. Background Technology

[0002] Mineral insulated cable (MICC) is a special type of cable consisting of a metal sheath encasing one or more metal conductors, with highly heat-resistant inorganic mineral powder (such as magnesium oxide powder) filling the spaces between them as insulation. These cables are known for their excellent fire resistance, long lifespan, and high current carrying capacity, and are widely used in power transmission, industrial facilities, building electrical installations, and other fields.

[0003] The patent currently published with the publication number CN220189264U discloses a mineral-insulated aluminum-sheathed flexible cable, which includes a flexible cable and a plurality of conductors. Each of the conductors has an inner layer on its outer peripheral wall and an outer layer on its outer peripheral wall to fix the conductors together. The inner layer includes an insulation layer fixed to the outer peripheral wall of the conductors. An inner protective layer is fixed to the outer peripheral wall of the insulation layer. A shielding layer is fixed to the outer peripheral wall of the inner protective layer. A reinforcing layer is fixed to the outer peripheral wall of the shielding layer.

[0004] However, the above-mentioned devices have the following problems when in use: In order to ensure the safe operation of cables under complex conditions (such as industrial environments, outdoor exposed areas, etc.), traditional protection measures mainly include the use of sheath materials and the addition of external protective devices. External protective devices usually require a complicated installation process, which increases construction time and cost, and is not easy to inspect and maintain later. Utility Model Content

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a mineral-insulated flexible cable that significantly improves the safety and reliability of the cable in complex environments by enhancing mechanical protection and simplifying installation and maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mineral-insulated flexible cable includes a cable body and a bottom semi-ring protective cover. A top semi-ring protective cover is rotatably mounted on the bottom semi-ring protective cover. The cross-sections of the bottom and top semi-ring protective covers can be spliced ​​together to form a ring that matches the cross-section of the cable body. A fixing block is fixedly mounted on the cable body. An installation ring is slidably mounted inside the fixing block. Adjacent installation rings are arranged opposite each other. A connecting block is fixedly mounted on the installation ring. The inner circle of the installation ring matches the cylindrical cross-section formed by the bottom and top semi-ring protective covers. A driving mechanism is provided inside the fixing block.

[0008] Preferably, the drive mechanism includes an internally threaded sleeve, which is fixedly installed inside the fixed block. A threaded rod is threadedly installed on the internally threaded sleeve, and a knob is fixedly installed on the side of the threaded rod away from the mounting ring. The other end of the threaded rod is rotatably connected to the connecting block.

[0009] Preferably, the fixing block has a limiting cavity and a receiving cavity that are adapted to the mounting ring and the connecting block, respectively.

[0010] Preferably, the mounting ring is slidably installed inside the limiting cavity, and the mounting ring can only be translated on the limiting cavity, and the mounting ring can be completely inside.

[0011] Preferably, the lengths of the bottom semi-ring protective cover and the top semi-ring protective cover are the same as the distance between adjacent fixing blocks.

[0012] Preferably, the cross-section of the fixing block is triangular.

[0013] Preferably, both the bottom and top semi-circular protective covers have flexible pads embedded in the portions that contact the cable body.

[0014] Preferably, a magnetic plate is fixedly installed on the contact surface between the bottom semi-ring protective cover and the top semi-ring protective cover, and a magnetic block is fixedly installed on the contact surface between the top semi-ring protective cover and the bottom semi-ring protective cover. The magnetic plate and the magnetic block can be magnetically attracted to each other.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) In this utility model, the cylindrical structure formed by the bottom semi-ring protective cover and the top semi-ring protective cover can wrap the cable body, provide effective mechanical protection, prevent external objects from damaging the cable, and push the installation ring along the limiting cavity through the drive mechanism (knob, threaded rod, internal threaded sleeve), so that the protective cover can be installed quickly to prevent it from being loosened accidentally. The installation is extremely simple and easy to use.

[0017] (2) In this utility model, the fixing block adopts a triangular cross-section design, which makes the movement of the cable more stable, and the fixing block can directly contact the ground, avoiding direct friction between the cable and the protective cover and the ground, protecting the cable from ground wear, extending the system life, and maintaining a clean appearance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a mineral-insulated flexible cable proposed in this utility model;

[0019] Figure 2 This is a front view of a mineral-insulated flexible cable fixing block proposed in this utility model;

[0020] Figure 3 This is a side view of a mineral-insulated flexible cable fixing block proposed in this utility model;

[0021] Figure 4 This is an internal cross-sectional view of a mineral-insulated flexible cable fixing block proposed in this utility model;

[0022] Figure 5 This utility model proposes a mineral-insulated flexible cable Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 This is a schematic diagram of a mineral-insulated flexible cable protective sleeve structure proposed in this utility model.

[0024] In the diagram: 1. Cable body; 2. Bottom semi-circular protective cover; 3. Top semi-circular protective cover; 4. Fixing block; 5. Mounting ring; 6. Connecting block; 7. Knob; 8. Threaded rod; 9. Receiving cavity; 10. Internal threaded sleeve; 11. Limiting cavity; 12. Flexible pad; 13. Magnetic plate; 14. Magnetic block. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please see Figures 1 to 6 A mineral-insulated flexible cable includes a cable body 1 and a bottom semi-circular protective cover 2. This design is suitable for applications requiring additional mechanical protection, such as industrial environments or outdoor exposed areas.

[0027] A top semi-ring protective cover 3 is rotatably mounted on the bottom semi-ring protective cover 2. The cross-sections of the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3 can be spliced ​​together to form a ring that matches the cross-section of the cable body 1. By rotating the top semi-ring protective cover 3, the user can easily open and close the protective cover, which facilitates the installation and inspection of the cable body 1. It is worth noting that the protective cover is suitable for straight cable bodies 1 that do not require bending.

[0028] When the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3 are spliced ​​into a cylinder, the corresponding part of the cable body 1 can be smoothly wrapped inside, thereby protecting the cable from mechanical damage and providing waterproof, moisture-proof, and corrosion-proof protection to ensure the long-term normal operation of the cable.

[0029] A fixing block 4 is fixedly installed on the cable body 1. An installation ring 5 is slidably installed inside the fixing block 4. Adjacent installation rings 5 ​​are arranged opposite each other. A connecting block 6 is fixedly installed on the installation ring 5. The inner circle of the installation ring 5 is adapted to the cylindrical cross-section formed by the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3. A driving mechanism is provided inside the fixing block 4.

[0030] The mounting ring 5 can be moved by the driving mechanism, and the mounting ring 5 can wrap around the two ends of the cylindrical whole formed by the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3, so that the top semi-ring protective cover 3 cannot rotate, thus completing the installation of the protective cover.

[0031] The drive mechanism includes an internal threaded sleeve 10, which is fixedly installed inside the fixed block 4. A threaded rod 8 is threadedly installed on the internal threaded sleeve 10. A knob 7 is fixedly installed on the side of the threaded rod 8 away from the mounting ring 5. The other end of the threaded rod 8 is rotatably connected to the connecting block 6.

[0032] By rotating knob 7, the user can precisely control the forward and backward movement of threaded rod 8, thereby pushing mounting ring 5 to move along limiting cavity 11, thus facilitating the placement of protective cover.

[0033] The fixed block 4 has a limiting cavity 11 and a receiving cavity 9 that are adapted to the mounting ring 5 and the connecting block 6, respectively.

[0034] The mounting ring 5 is slidably installed inside the limiting cavity 11, and the mounting ring 5 can only be translated on the limiting cavity 11. The mounting ring 5 can be completely inside, and the limiting cavity 11 provides a guiding function for the mounting ring 5, ensuring that it can only perform linear translational movement and will not rotate or other unnecessary displacement.

[0035] The lengths of the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3 are the same as the distance between the adjacent fixing blocks 4.

[0036] When the mounting ring 5 is completely inside the limiting cavity 11, it will not obstruct the placement of the bottom semi-ring protective cover 2.

[0037] The cross-section of the fixing block 4 is triangular. The triangular design enhances the structural stability and makes the cable body 1 more stable when it moves. The cable body 1 and the protective cover do not come into contact with the ground. Instead, the fixing block 4 comes into direct contact with the ground, which can avoid unnecessary wear. Preferably, the fixing block 4 should be made of wear-resistant material.

[0038] Both the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3 have flexible pads 12 embedded in the parts that contact the cable body 1. The flexible pads 12 not only protect the cable surface from wear, but also play a buffering role, reducing the impact of mechanical vibration on the cable performance.

[0039] A magnetic plate 13 is fixedly installed on the contact surface between the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3. A magnetic block 14 is fixedly installed on the contact surface between the top semi-ring protective cover 3 and the bottom semi-ring protective cover 2. The magnetic plate 13 and the magnetic block 14 can be magnetically attracted to each other.

[0040] The magnetic attraction between the magnetic plate 13 and the magnetic block 14 ensures a tight seal between the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3, preventing moisture, dust, etc. from entering and improving the safety and reliability of cable operation. In addition, it simplifies the installation process and makes the protective cover easy to open and close.

[0041] The cable itself should have good shielding measures (such as metal braided mesh, aluminum foil, etc.), which can effectively reduce the influence of external magnetic fields on internal signals. Shielding can not only prevent the intrusion of external magnetic fields, but also suppress the interference of the magnetic field generated by magnetic block 14 on the outside world (since it is existing technology, it is not described in detail).

[0042] The working process of this utility model is as follows: First, the bottom semi-ring protective cover 2 is placed under the cable body 1, ensuring a tight fit. Then, the top semi-ring protective cover 3 is rotated to cover the cable body 1 and close with the bottom semi-ring protective cover 2. At this time, the magnetic plate 13 on the bottom semi-ring protective cover 2 and the magnetic block 14 on the top semi-ring protective cover 3 attract each other to form a complete cylindrical protective structure.

[0043] When the bottom semi-ring protective cover 2 and the top semi-ring protective cover 3 are spliced ​​into a cylinder, they can completely wrap the corresponding part of the cable body 1 inside, providing effective mechanical protection and preventing external objects from damaging the cable. The closed design of the protective cover, together with the tight cooperation between the magnetic plate 13 and the magnetic block 14, can effectively prevent moisture, dust and other substances from entering the inside of the cable, improving the durability and reliability of the cable.

[0044] By rotating the knob 7, the threaded rod 8 is driven to move along the internal threaded sleeve 10, which in turn pushes the mounting ring 5 to move along the limiting cavity 11. When the mounting ring 5 moves outward, it presses against both sides of the cylindrical whole formed by the bottom half-ring protective cover 2 and the top half-ring protective cover 3, thereby fixing the position of the protective cover and preventing it from loosening accidentally.

[0045] Furthermore, the fixing block 4 adopts a triangular cross-section design, which enhances the structural stability. The fixing block 4 is in direct contact with the ground, which avoids direct friction between the cable and the protective cover and the ground, reducing unnecessary wear.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mineral-insulated flexible cable comprising a cable body (1) and a bottom half-ring protective cover (2), characterized in that, The bottom half ring protective cover (2) is rotatably installed with the top half ring protective cover (3), the cross sections of the bottom half ring protective cover (2) and the top half ring protective cover (3) can be jointly spliced to form a ring body matched with the cross section of the cable body (1), the cable body (1) is fixedly installed with the fixed block (4), the inside of the fixed block (4) is slidably installed with the mounting ring (5), adjacent mounting rings (5) are oppositely arranged, the mounting ring (5) is fixedly installed with the connecting block (6), the inner circle of the mounting ring (5) is matched with the cylindrical cross section formed by the bottom half ring protective cover (2) and the top half ring protective cover (3), and the inside of the fixed block (4) is provided with a driving mechanism.

2. A mineral-insulated flexible electrical cable according to claim 1, characterised in that, The driving mechanism comprises an internally-threaded sleeve (10) fixedly installed in the inside of the fixed block (4), a threaded rod (8) threadedly installed on the internally-threaded sleeve (10), a knob (7) fixedly installed on the side of the threaded rod (8) away from the mounting ring (5), and the other end of the threaded rod (8) in rotational connection with the connecting block (6).

3. A mineral-insulated flexible electrical cable according to claim 1, characterized in that, The inside of the fixed block (4) is provided with a limiting cavity (11) and a containing cavity (9) matched with the mounting ring (5) and the connecting block (6) respectively.

4. A mineral-insulated flexible electrical cable according to claim 1, characterized in that, The mounting ring (5) is slidably installed in the inside of the limiting cavity (11), and the mounting ring (5) can only translate on the limiting cavity (11), and the mounting ring (5) can be completely in the inside of the limiting cavity (11).

5. A mineral-insulated flexible electrical cable according to claim 1, characterized in that, The lengths of the bottom half ring protective cover (2) and the top half ring protective cover (3) are same as the distance between adjacent fixed blocks (4).

6. A mineral-insulated flexible electrical cable according to claim 1, characterized in that, The cross section of the fixed block (4) is triangular.

7. A mineral-insulated flexible electrical cable according to claim 1, characterized in that, The bottom half ring protective cover (2) and the top half ring protective cover (3) are both inlaid with flexible pads (12) on the parts in contact with the cable body (1).

8. A mineral-insulated flexible electrical cable according to claim 1, characterized in that, The bottom half ring protective cover (2) is fixedly installed with a magnetic absorption plate (13) on the contact surface with the top half ring protective cover (3), the top half ring protective cover (3) is fixedly installed with a magnetic block (14) on the contact surface with the bottom half ring protective cover (2), and the magnetic absorption plate (13) and the magnetic block (14) can be magnetically attracted and matched.

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