A new fireproof fusion splice cable joint

Abstract

The utility model discloses a novel fire -proof welding type cable joint relates to fire -resistant material technical field. The utility model discloses a cable line, the circumference of cable line is provided with the composite joint structure. The utility model discloses the mutual cooperation between conductor connecting layer, semi -conductive buffer layer and insulating recovery layer etc. in the composite joint structure, realized the close combination and efficient cooperation between each layer of cable joint, significantly promoted the overall performance of cable joint. The conductor connecting layer adopts copper material, has guaranteed excellent electric conductivity, reduced the loss in the process of electric energy transmission. Semi -conductive buffer layer adopts carbon black composite material, effectively promoted the electric field uniformity of cable joint, prevented the occurrence of partial discharge phenomenon, and the insulating recovery layer used irradiation crosslinking polyethylene material, and the insulating strength and heat resistance were improved greatly. Solve the technical problem that the cable joint cannot be effectively protected from fire in the related art.

Description

Technical Field

[0001] This utility model belongs to the field of fireproof materials technology, and in particular relates to a novel fireproof fusion splice cable connector. Background Technology

[0002] Cable joints are often at risk of fire. In the event of a fire, cable joints often become a critical channel for the spread of fire, not only accelerating the spread of the fire but also potentially causing power outages, resulting in serious economic losses and safety hazards.

[0003] A novel cable fusion splice joint (publication number: CN218549483U) is disclosed, comprising a connecting mechanism, a clamping mechanism, and a protective mechanism. The connecting mechanism includes a first protective sleeve, a connecting ring screwed to one end of the first protective sleeve, and a second protective sleeve connected to the first protective sleeve via the connecting ring. The clamping mechanism includes a connector located at the connection between the first and second protective sleeves, two clamping plates slidably connected to the inner wall of the connector, and clamping bolts fixedly connected to the outer wall of the clamping plates on opposite sides. The protective mechanism includes, from top to bottom, an insulation layer, a fireproof layer, a sealant, and an inner lining mesh arranged inside the first and second protective sleeves. This utility model features a reasonable structural design, good fire resistance, ease of use, and excellent waterproof performance. Even after prolonged immersion in water, it is not prone to leakage, effectively alleviating external pressure on the cable joint and extending the cable's service life.

[0004] While the fire-resistant properties of the cable joints in the above applications have been improved to some extent through structures such as fireproof layers, sealants, and inner mesh, there are still some shortcomings in actual use. In the event of an accident, the high-temperature environment may cause the fireproof layer material to fail rapidly, and the structure is too complex. Therefore, we propose a new type of fire-resistant fusion splice cable joint. Utility Model Content

[0005] The purpose of this invention is to provide a novel fire-resistant fusion splice cable joint. By cooperating with the conductor connection layer, semi-conductive buffer layer, and insulation recovery layer in the composite joint structure, the problem of existing cable joints being unable to provide effective fire protection is solved.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a novel fireproof fusion splice cable joint, which includes a cable and a composite joint structure is provided on the circumferential surface of the cable.

[0007] The composite connector structure includes a conductor connection layer disposed on the circumferential surface of the cable, a semi-conductive buffer layer disposed on the circumferential surface of the conductor connection layer, an insulation recovery layer disposed on the circumferential surface of the semi-conductive buffer layer, a metal shielding layer disposed on the circumferential surface of the insulation recovery layer, a fireproof sealing layer disposed on the circumferential surface of the metal shielding layer, and a glue delivery tube that penetrates and is fixedly connected to the circumferential surface of the fireproof sealing layer.

[0008] Furthermore, the inner wall of the glue delivery tube is provided with a blocking block, and the interior of the glue delivery tube penetrates the interior of the conductor connection layer. Its function is to inject fire-retardant glue into the interior of the conductor connection layer through the glue delivery tube when a fire occurs at the cable joint. The fire-retardant glue can penetrate from the conductor connection layer to the spaces between the layers, making the layers tightly bonded and forming a fire-resistant sealing structure, effectively preventing the spread of fire and improving the fire resistance of the cable joint.

[0009] Furthermore, the conductor connection layer is made of copper, the semi-conductive buffer layer is made of carbon black composite material, and the insulation recovery layer is made of irradiated cross-linked polyethylene. Its function is to improve the conductivity and insulation performance of the cable joint and ensure the safe and reliable operation of the cable joint.

[0010] Furthermore, the metal shielding layer is made of polyolefin-based material, and the fireproof sealing layer is made of ceramicized silicone rubber. Their function is to improve the shielding effect and fireproof sealing performance of the cable joint, and effectively prevent the impact of external electromagnetic interference and fire on the cable joint.

[0011] Furthermore, a locking and waterproofing device is provided on the circumferential surface of the fireproof sealing layer. The locking and waterproofing device includes a locking sleeve, which is fixedly connected to the circumferential surface of the fireproof sealing layer. A locking hole is opened on the circumferential surface of the locking sleeve. A threaded sleeve is fixedly connected to the bottom of the locking hole. A pressing rod is threadedly connected to the inner wall of the threaded sleeve. A pressure plate is fixedly connected to one end of the pressing rod. A locking block is fixedly connected to the end of the pressing rod away from the pressure plate. A locking post is fixedly engaged on the top of the locking block. Its function is to lock and waterproof the cable joint, prevent water leakage from the cable joint in a long-term humid environment, and improve the waterproof performance and service life of the cable joint.

[0012] Furthermore, the side cross-section of the pressure plate is set to semi-circular, the side of the pressure plate is slidably connected to the inner wall of the threaded sleeve, and the side of the threaded sleeve penetrates the circumferential surface of the cable. This improves the convenience of cable joint installation and enhances the stability of the cable joint after installation.

[0013] Furthermore, the top of the locking block has several round holes and a cross hole, which facilitates the rotation of the locking block by external tools, thereby making it convenient to adjust the screw rod by thread lifting and lowering, and further to squeeze or loosen the pressure plate, thus improving the flexibility of cable connector installation and disassembly.

[0014] This utility model has the following beneficial effects: This invention achieves tight bonding and efficient collaboration among the various layers of the cable joint through the cooperation of the conductor connection layer, semi-conductive buffer layer, and insulation recovery layer in the composite joint structure. This significantly improves the overall performance of the cable joint. The conductor connection layer is made of copper, ensuring excellent conductivity and reducing losses during power transmission. The semi-conductive buffer layer is made of carbon black composite material, which effectively improves the electric field uniformity of the cable joint and prevents partial discharge. The insulation recovery layer uses irradiated cross-linked polyethylene material, which greatly improves insulation strength and heat resistance, ensuring the safety and reliability of the cable joint during long-term use.

[0015] This invention achieves effective locking and waterproof protection of cable joints through the cooperation of locking sleeve, locking hole, and threaded sleeve in the locking and waterproof device. The locking sleeve is fixedly connected to the fireproof sealing layer. Through the cooperation of locking hole and threaded sleeve, the pressing rod can easily adjust the pressure of the pressure plate on the cable, thereby ensuring the stability and waterproof performance of the cable joint after installation. The design of the locking block not only facilitates operation but also improves the flexibility of cable joint installation and disassembly, making maintenance work more convenient.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional structural schematic diagram of the present invention; Figure 3 This is a three-dimensional cross-sectional structural diagram of the locking and waterproofing device of this utility model; Figure 4 This is a three-dimensional enlarged structural diagram of the pressure plate of this utility model; Figure 5 This is a three-dimensional cross-sectional structural diagram of the composite connector structure of this utility model.

[0019] The attached diagram lists the components represented by each number as follows: 1. Cable; 2. Composite connector structure; 201. Conductor connection layer; 202. Semi-conductive buffer layer; 203. Insulation recovery layer; 204. Metal shielding layer; 205. Fireproof sealing layer; 206. Glue delivery tube; 3. Blocking block; 4. Locking and waterproof device; 401. Locking sleeve; 402. Locking hole; 403. Threaded sleeve; 404. Extrusion rod; 405. Wire clamping plate; 406. Locking block; 407. Locking post. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-5 This utility model is a new type of fireproof fusion splicing cable joint, including a cable 1, and a composite joint structure 2 is provided on the circumferential surface of the cable 1.

[0022] The composite connector structure 2 includes a conductor connection layer 201, which is disposed on the circumferential surface of the cable 1. A semi-conductive buffer layer 202 is disposed on the circumferential surface of the conductor connection layer 201. An insulation recovery layer 203 is disposed on the circumferential surface of the semi-conductive buffer layer 202. A metal shielding layer 204 is disposed on the circumferential surface of the insulation recovery layer 203. A fireproof sealing layer 205 is disposed on the circumferential surface of the metal shielding layer 204. A glue delivery tube 206 is connected through and fixedly connected to the circumferential surface of the fireproof sealing layer 205.

[0023] As shown in the figure, the inner wall of the glue delivery tube 206 is provided with a blocking block 3. The interior of the glue delivery tube 206 penetrates the interior of the conductor connection layer 201. Its function is to inject fire-retardant glue into the interior of the conductor connection layer 201 through the glue delivery tube 206 when a fire occurs at the cable joint. The fire-retardant glue can penetrate from the conductor connection layer 201 to the spaces between the layers, making the layers tightly bonded and forming a fire-resistant sealing structure, effectively preventing the spread of fire and improving the fire resistance of the cable joint.

[0024] As shown in the figure, the conductor connection layer 201 is made of copper, the semi-conductive buffer layer 202 is made of carbon black composite material, and the insulation recovery layer 203 is made of irradiated cross-linked polyethylene. Their function is to improve the conductivity and insulation performance of the cable joint and ensure the safe and reliable operation of the cable joint.

[0025] As shown in the figure, the metal shielding layer 204 is made of polyolefin-based material, and the fireproof sealing layer 205 is made of ceramicized silicone rubber. Their function is to improve the shielding effect and fireproof sealing performance of the cable joint, and effectively prevent the impact of external electromagnetic interference and fire on the cable joint.

[0026] As shown in the figure, a locking and waterproofing device 4 is provided on the circumferential surface of the fireproof sealing layer 205. The locking and waterproofing device 4 includes a locking sleeve 401, which is fixedly connected to the circumferential surface of the fireproof sealing layer 205. A locking hole 402 is opened on the circumferential surface of the locking sleeve 401. A threaded sleeve 403 is fixedly connected to the bottom of the locking hole 402. A pressing rod 404 is threadedly connected to the inner wall of the threaded sleeve 403. A pressure plate 405 is fixedly connected to one end of the pressing rod 404. A locking block 406 is fixedly connected to the end of the pressing rod 404 away from the pressure plate 405. A locking post 407 is inserted through the top of the locking block 406 and engaged with it. Its function is to lock and waterproof the cable joint, prevent water seepage from the cable joint in a long-term humid environment, and improve the waterproof performance and service life of the cable joint.

[0027] As shown in the figure, the side section of the pressure plate 405 is set as semi-circular. The side of the pressure plate 405 is slidably connected to the inner wall of the threaded sleeve 403. The side of the threaded sleeve 403 penetrates the circumferential surface of the cable 1. Its function is to improve the convenience of cable joint installation and enhance the stability of cable joint after installation.

[0028] As shown in the figure, the top of the locking block 406 has several round holes and a cross hole. The purpose of the locking block 406 is to facilitate the rotation of the locking block 406 by external tools, thereby facilitating the threaded adjustment of the pressing rod 404 and further pressing or loosening the pressure plate 405, thus improving the flexibility of cable connector installation and disassembly.

[0029] One specific application of this embodiment is as follows: the conductor connection layer 201 uses highly conductive copper as the main current channel to ensure that the connection resistance is close to zero; the carbon black composite material of its outer semiconductive buffer layer 202 can uniformly generate an electric field and suppress partial discharge; the irradiated cross-linked polyethylene of the insulation recovery layer 203 maintains high insulation strength after being heated or aged; the polyolefin-based material of the metal shielding layer 204 ensures stable transmission of signals or electrical energy; when an open flame or high-temperature fault occurs externally, the fireproof sealing layer 205 made of ceramicized silicone rubber quickly transforms from an elastomer into a dense ceramic shell, forming a fire barrier to block oxygen and flame from penetrating into the interior; during installation, the wires are first placed... At the appropriate position, by adjusting the pressing rod 404 and the pressure plate 405, the operator uses a special tool to rotate the locking block 406. At this time, the pressing rod 404 rotates and engages with the threaded sleeve 403, causing the pressing rod 404 to drive the pressure plate 405 to move towards the cable 1 until the pressure plate 405 tightly presses the cable 1. Then, the locking block 406 is fixed by the locking pin 407. When locking the cable 1, the locking pin 407 is engaged inside the locking hole 402, thereby further fixing the cable 1 and preventing the cable 1 from shaking or falling off during use, thus improving the stability and safety of the cable joint after installation.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel fire-resistant fusion splice cable joint, comprising a cable (1), characterized in that: The circumferential surface of the cable (1) is provided with a composite joint structure (2). The composite connector structure (2) includes a conductor connection layer (201), which is disposed on the circumferential surface of the cable (1). A semi-conductive buffer layer (202) is disposed on the circumferential surface of the conductor connection layer (201). An insulation recovery layer (203) is disposed on the circumferential surface of the semi-conductive buffer layer (202). A metal shielding layer (204) is disposed on the circumferential surface of the insulation recovery layer (203). A fireproof sealing layer (205) is disposed on the circumferential surface of the metal shielding layer (204). A glue delivery tube (206) is connected through and fixedly connected to the circumferential surface of the fireproof sealing layer (205).

2. The novel fire-resistant fusion splice cable joint according to claim 1, characterized in that, The inner wall of the glue delivery tube (206) is provided with a blocking block (3), and the interior of the glue delivery tube (206) penetrates the interior of the conductor connection layer (201).

3. A novel fire-resistant fusion splice cable connector according to claim 2, characterized in that, The conductor connection layer (201) is made of copper, the semiconductive buffer layer (202) is made of carbon black composite material, and the insulation recovery layer (203) is made of irradiated cross-linked polyethylene.

4. A novel fire-resistant fusion splice cable joint according to claim 3, characterized in that, The metal shielding layer (204) is made of polyolefin-based material, and the fireproof sealing layer (205) is made of ceramicized silicone rubber.

5. A novel fire-resistant fusion splice cable connector according to claim 4, characterized in that, The fireproof sealing layer (205) is provided with a locking and waterproof device (4) on its circumferential surface. The locking and waterproof device (4) includes a locking sleeve (401). The locking sleeve (401) is fixedly connected to the circumferential surface of the fireproof sealing layer (205). The circumferential surface of the locking sleeve (401) is provided with a locking hole (402). The bottom of the locking hole (402) is penetrated and fixedly connected with a threaded sleeve (403). The inner wall of the threaded sleeve (403) is threadedly connected with a pressing rod (404). One end of the pressing rod (404) is fixedly connected with a pressure plate (405). The end of the pressing rod (404) away from the pressure plate (405) is fixedly connected with a locking block (406). The top of the locking block (406) is penetrated and engaged with a locking pin (407).

6. A novel fire-resistant fusion splice cable joint according to claim 5, characterized in that, The side section of the pressure plate (405) is set to be semi-circular. The side of the pressure plate (405) is slidably connected to the inner wall of the threaded sleeve (403). The side of the threaded sleeve (403) penetrates the circumferential surface of the cable (1).

7. A novel fire-resistant fusion splice cable connector according to claim 6, characterized in that, The top of the locking block (406) has several round holes and a cross hole.

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