Magnetic cable clamp

Abstract

The utility model provides a magnetic cable clamp. The magnetic cable clamp comprises a base, a magnet block and an end cover made of a magnetic conductive material, wherein the base comprises a cylindrical base body and a vertically symmetrical stepped axial through hole with thick holes at the upper end and the lower end and a thin hole in the middle, two through and parallel wire clamping grooves are formed in the surface of the same side of the base, and at least one temperature sensing cable is fixedly contained in the grooves; the end cover is a magnetic conductive circular plate of which the axis center is provided with a middle groove; the middle groove extends into the axial through hole from the upper end of the base body to the bottom end of the middle thin hole; the magnet block is embedded into the thick hole in the lower end of the base body from the lower end of the base body and is assembled with the base body through magnetic attraction between the magnet block and the end cover. According to the magnetic cable clamp, two selectable installation modes of close installation and overhead installation of the temperature sensing cable are provided through the double-face installation structure, temporary adjustment can be conveniently carried out according to site requirements, in addition, the temperature measuring module is arranged, and the problem that an existing magnetic cable clamp lacks visual display of the temperature of an installation position is solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of temperature sensing cable construction and installation, and relates to a magnetic cable clamp for temperature sensing cables, and particularly to a magnetic cable clamp for fixing temperature sensing cables to the surface of a transformer. Background Technology

[0002] According to GB50414-2018 "Fire Protection Design Standard for Iron and Steel Metallurgical Enterprises", iron and steel metallurgical enterprises should lay temperature-sensing cables close to the outer surface of transformers. However, since the surface of transformers is smooth, holes cannot be drilled, and welding is not possible, the existing technology is to use magnetic cable clamps to fix the temperature-sensing cables to the outer surface of the transformer by magnetic attraction.

[0003] Chinese patent CN211232142U discloses a magnetic cable clamp that uses two grooves machined on its bottom surface to press a temperature-sensing cable against the transformer surface when the clamp is attached to it. However, this magnetic cable clamp cannot be installed above the transformer surface.

[0004] Chinese patent CN202020913698 discloses a magnetic cable clamp, which uses screws and a cover plate to fix a temperature-sensing cable to the surface of the magnetic cable clamp, thereby allowing the cable to adhere to the surface of the transformer, forming a slightly overhead installation method. However, this magnetic cable clamp cannot be installed close to the transformer surface.

[0005] In summary, the specific type of magnetic clamp used for installing temperature-sensing cables depends on the cable specifications and the actual site conditions. This typically involves choosing between overhead or close-fitting magnetic cable clamps for the cable, increasing the complexity of the fire detection system's design and procurement. Utility Model Content

[0006] The purpose of this utility model is to provide a magnetic cable clamp that can both suspend and install temperature-sensing cables on the surface of a transformer, and also install temperature-sensing cables close to the surface of a transformer. It includes a base, a magnet, and an end cap made of magnetically conductive material. The base comprises a cylindrical base body and a symmetrical stepped axial through-hole with coarse holes at both ends and a fine hole in the middle. Two parallel, continuous grooves are provided on the same side surface of the base body, which securely accommodate at least one temperature-sensing cable. The end cap is a magnetically conductive circular plate with a central groove extending from the upper end of the base body into the axial through-hole to the bottom of the fine hole. The magnet is embedded in the lower coarse hole of the base body and is magnetically attracted to the end cap, assembling it together with the base body.

[0007] Preferably, the base body is made of a magnetically conductive material.

[0008] Preferably, the magnetic material is carbon steel.

[0009] Preferably, it also includes a temperature measuring module, which is embedded in the middle groove of the magnetic conductive circular plate.

[0010] Preferably, the measurement module is a wireless or wired temperature measurement module.

[0011] Preferably, the temperature measuring module is a miniature thermometer with a dial or a thermal temperature sticker.

[0012] This utility model provides a magnetic cable clamp that offers two optional installation methods for temperature sensing cables: close-fitting installation and overhead installation, through a double-sided installation structure. This can adapt to different customer installation requirements and can be easily adjusted temporarily according to on-site needs. In addition, it is equipped with a temperature measurement module, which overcomes the problems of commonly used magnetic cable clamps on the market, such as the single and unadjustable installation form and the lack of intuitive display of the temperature at the installation position. Attached Figure Description

[0013] Figure 1 This is an exploded axial cross-sectional view of a magnetic cable clamp provided by this utility model;

[0014] Figure 2 yes Figure 1 An exploded three-dimensional structural diagram of the magnetic cable clamp shown in the figure;

[0015] Figure 3 yes Figure 1 The diagram shows an axial cross-sectional view of the magnetic cable clamp used to mount the temperature sensing cable close to the transformer surface.

[0016] Figure 4 yes Figure 1 The diagram shows an axial cross-sectional view of the magnetic cable clamp for mounting temperature sensing cables on the surface of an overhead transformer.

[0017] Explanation of the labels in the attached drawings:

[0018] 1. Base; 11. Base body; 12. Stepped axial through hole; 13. Cable groove; 2. End cap made of magnetic material; 3. Temperature measuring module; 4. Magnet block; 5. Temperature sensing cable. Detailed Implementation

[0019] The magnetic cable clamp provided by this utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1As shown, the present invention proposes a magnetic cable clamp, comprising a base 1, a magnet 4, an end cap 2 made of magnetically conductive material, and a temperature measuring module 3; wherein the base 1 comprises a cylindrical base body 11 and a symmetrical stepped axial through hole 12 with coarse holes at the top and bottom ends and a fine hole in the middle, and two parallel and continuous wire-holding grooves 13 on the same side surface, the wire-holding grooves 13 can fix and accommodate at least one temperature-sensing cable therein; the end cap 2 is a magnetically conductive circular plate with a central groove, the central groove extending from the upper end of the base body 11 into the axial through hole 12 to the bottom end of the central fine hole; the magnet 4 is embedded in the lower coarse hole of the base body 11 from the lower end, and is assembled with the base body 11 by magnetic attraction with the end cap 2; the temperature measuring module 3 is embedded in the central groove of the magnetically conductive circular plate.

[0021] 1) Method of installing temperature sensing cables close to the transformer surface: such as Figure 3 As shown.

[0022] Figure 3 Is Figure 1 and 2 Based on the assembly diagram of the magnetic cable clamp, two temperature-sensing cables 5 are respectively embedded in two cable-clamping grooves 13. The entire magnetic cable clamp is magnetically attracted to the installation position on the transformer surface by the magnet 4. The base body 11 can be made of magnetically conductive materials such as carbon steel, which can effectively enhance the magnetic attraction force of the entire clamp, making it less likely for the temperature-sensing cables to fall off. At the same time, the magnet 4 will also be attracted to the step in the axial through hole 12 in the base body 11, making the magnet 4 more firmly installed. In addition, the inspection personnel can intuitively understand the current surface temperature level of the transformer through the temperature measuring module 3 (such as a thermal temperature sticker).

[0023] 2) Method of installing temperature sensing cables on the surface of overhead transformers: such as Figure 4 As shown.

[0024] Figure 4 yes Figure 1 and 2 Another assembly diagram of the magnetic cable clamp, which is related to the assembly Figure 3 The difference is: assembling Figure 3 The base body 11 is mounted in reverse; the magnetic conductive circular plate and magnet block 4 are assembled from its upper and lower ends respectively, and the temperature measuring module 3 is embedded in the middle groove of the magnetic conductive circular plate in the same way; similarly, the two temperature sensing cables 5 are embedded in the two wire clamping grooves 13 respectively.

[0025] The base body 11 can be made of magnetic materials such as carbon steel, which can effectively enhance the magnetic attraction of the entire clamp, making it less likely for the temperature sensing cable to fall off. At the same time, the magnet 4 will also attract the step in the axial through hole 12 in the base body 11, making the magnet 4 more firmly installed.

[0026] The temperature measuring module 3 described in the above embodiments can be a wireless communication temperature measuring module with a built-in battery, a miniature thermometer with a dial, or a temperature-sensing element that displays temperature levels by changing color, such as a thermal temperature sticker. When a wireless communication temperature measuring module is used, such as a temperature measuring module with near-field communication functions like NFC or Bluetooth, the inspection personnel can easily establish communication with the magnetic cable clamp temperature measuring module and activate the module by holding a handheld terminal device close to the transformer, thereby reading real-time temperature values ​​or even historical temperature records. When a miniature thermometer with a dial or a thermal temperature sticker is used, the surface temperature of the transformer can be determined directly by the thermometer reading or the color change of the thermal temperature sticker.

[0027] The invention of this utility model patent is: the base body 11 and its upper and lower symmetrical stepped axial through holes 12 with coarse holes at the upper and lower ends and a fine hole in the middle. The magnet block 4 and the end cap 2 are respectively assembled on the inner and outer sides of the base body 11 and are connected by magnetic force between them. As long as the base body 11 is installed upright or in reverse, the temperature sensing cable can be easily installed close to or overhead on site.

[0028] The embodiments described above are examples of preferred embodiments of this utility model and are not intended to limit the device. Without affecting the substance of this utility model, any changes, modifications, substitutions, combinations, or simplifications of the components in the above embodiments can be made according to actual needs. All such substitutions are equivalent and are included within the protection scope of this utility model. For example, fixing the magnet block 4 and end cap 2 to the base body 11 via interference fit, adhesive, or other methods can strengthen the magnetic cable clamp assembly and is a feasible and more effective assembly method; the wireless temperature measurement module can be replaced with a wired temperature measurement module; the shape of the base body 11, end cap 2, and magnet block 4 can be a cube, cuboid, etc.; the magnetic cable clamp of this utility model can also be used on any planar part similar to the outer surface of a transformer to suspend or closely mount the temperature sensing cable.

Claims

1. A magnetic cable clamp, characterized in that, The device includes a base, a magnet, and an end cap made of magnetically conductive material. The base comprises a cylindrical base body with a symmetrical stepped axial through-hole consisting of coarse holes at the top and bottom ends and a fine hole in the middle. Two parallel, continuous grooves are provided on the same side surface of the base body, which securely house at least one temperature-sensing cable. The end cap is a magnetically conductive circular plate with a central groove at its center. The central groove extends from the upper end of the base body into the axial through-hole to the bottom of the fine hole. The magnet is embedded in the coarse hole at the lower end of the base body and is assembled with the base body by magnetic attraction between the magnet and the end cap.

2. The magnetic cable clamp according to claim 1, characterized in that, The base body is made of magnetically conductive material.

3. The magnetic cable clamp according to claim 2, characterized in that, The magnetic material is carbon steel.

4. The magnetic cable clamp according to claim 1, 2, or 3, characterized in that, It also includes a temperature measuring module, which is embedded in the middle groove of the magnetically conductive circular plate.

5. The magnetic cable clamp according to claim 4, characterized in that, The temperature measurement module can be a wireless or wired temperature measurement module.

6. The magnetic cable clamp according to claim 4, characterized in that, The temperature measurement module is a miniature thermometer with a dial or a thermal temperature sticker.

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