Explosion-proof box for intermediate joint of power transmission and transformation construction cable

Abstract

The utility model relates to a power transmission and transformation construction cable intermediate joint explosion-proof box, and belongs to the technical field of power transmission and transformation construction. The explosion-proof device mainly comprises an explosion-proof shell, a partition plate, a clamping piece, a guide pipe, a waterproof sealing ring and a cover plate. According to the utility model, the cavity interlayer arranged in the explosion-proof housing is filled with the fireproof material, so that flame and heat transmission can be effectively isolated, and the risk of electrical explosion of the cable joint can be reduced; the explosion-proof shell can effectively prevent high-pressure airflow, flames and fragments generated when the cable intermediate joint explodes from damaging the surrounding environment, the safety of the cable intermediate joint is improved, the waterproof sealing ring can effectively prevent water from entering the explosion-proof shell, the cable intermediate joint is prevented from being broken down due to damp, and the clamping piece and the guide pipe are arranged on the cable intermediate joint. The cable intermediate joint can be conveniently fixed in the explosion-proof shell, and laying and maintenance of the cable are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of power transmission and transformation construction technology, and specifically relates to an explosion-proof box for intermediate joints of power transmission and transformation construction cables. Background Technology

[0002] A cable joint, also known as a cable head, is a joint that connects the sections of a cable together after the cable has been laid to form a continuous line. The joints in the middle of a cable line are called intermediate joints.

[0003] Currently, there are many joints in the underground cables of large enterprises in my country's power, metallurgy, and petrochemical industries. These joints are prone to aging during long-term use, which can lead to sparking, short circuits, and even explosions. However, cable joints in cable trenches or direct burial environments are relatively concealed. When an electrical explosion occurs at a cable joint, it can generate high-pressure gas flow, flames, and fragments, which can easily cause electrical accidents. In addition, if the cable joint is not properly sealed, it will be soaked in water for a long time, which can easily allow moisture to seep in and even accumulate water. Weak points in the cable may not be able to withstand the harsh environment and are also prone to cable accidents. Utility Model Content

[0004] To overcome the problems of electrical accidents caused by aging of cable joints during long-term use, and the potential for moisture or even water to seep in if the cable joint is poorly sealed, which could lead to cable accidents due to weak points in the cable and its inability to withstand harsh environments, this utility model provides an explosion-proof box for intermediate joints of power transmission and transformation construction cables. The cavity interlayer inside the explosion-proof shell of this utility model is filled with fireproof material, which can effectively isolate the spread of flames and heat, reducing the risk of electrical explosion of the cable joint. The explosion-proof shell and partition can effectively prevent the high-pressure gas flow, flames and debris generated when the cable intermediate joint explodes from causing harm to the surrounding environment, thus improving the safety of the cable intermediate joint. The waterproof sealing ring can effectively prevent moisture from entering the explosion-proof shell, avoiding malfunctions of the cable intermediate joint due to moisture.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: An explosion-proof box for intermediate joints of power transmission and transformation construction cables mainly includes an explosion-proof shell, a partition, a clamping component, a guide tube, a waterproof sealing ring, and a cover plate. The explosion-proof shell has an internal cavity structure, and the partition is installed inside the cavity structure, forming a cavity interlayer between the explosion-proof shell and the partition. The cavity interlayer is filled with fireproof material. A boss is provided inside the explosion-proof shell, and the clamping component is detachably installed on the boss. The guide tube is installed at both ends of the explosion-proof shell and is connected to the explosion-proof shell. The waterproof sealing ring is installed inside the guide tube, and the cover plate is installed on the top of the explosion-proof shell by fastening bolts.

[0006] The waterproof sealing ring is a waterproof rubber sealing ring.

[0007] The fire-retardant material is fine sand or dry powder flame retardant.

[0008] A sealing strip is provided at the edge where the explosion-proof housing and the cover plate connect.

[0009] The clamping element is configured as an arc structure that matches the shape of the cable.

[0010] The beneficial effects of this utility model are:

[0011] The explosion-proof housing of this invention features an internal cavity filled with fire-retardant material, which effectively isolates the spread of flames and heat, reducing the risk of electrical explosions at cable joints. The explosion-proof housing and partitions effectively prevent the high-pressure gas flow, flames, and debris generated during an explosion of the cable joint from harming the surrounding environment, thus improving the safety of the cable joint. The waterproof sealing ring effectively prevents moisture from entering the explosion-proof housing, avoiding malfunctions of the cable joint due to moisture. The clamping parts and guide tubes facilitate the fixing of the cable joint inside the explosion-proof housing and make cable laying and maintenance easier. Attached Figure Description

[0012] Figure 1 This is an isometric schematic diagram of the present invention.

[0013] Figure 2 This is a three-dimensional schematic diagram of the present invention.

[0014] Figure 3 This is a partial cross-sectional view of the present invention.

[0015] Figure 4 This is another partial cross-sectional view of this utility model. Detailed Implementation

[0016] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0017] This utility model discloses an explosion-proof box for intermediate joints of power transmission and transformation construction cables. The explosion-proof box for intermediate joints of power transmission and transformation construction cables mainly includes an explosion-proof shell 1, a partition 2, a clamping component 3, a guide tube 4, a waterproof sealing ring 5, and a cover plate 6. The explosion-proof shell 1 has an internal cavity structure. The partition 2 is installed inside the cavity structure, forming a cavity interlayer between the explosion-proof shell 1 and the partition 2. The cavity interlayer is filled with fireproof material. The explosion-proof shell 1 has a boss 11 inside. The clamping component 3 is detachably installed on the boss 11. The guide tube 4 is installed at both ends of the explosion-proof shell 1 and is connected to the explosion-proof shell 1. The waterproof sealing ring 5 is installed inside the guide tube 4. The cover plate 6 is installed on the top of the explosion-proof shell 1 by fastening bolts.

[0018] The cable is passed through the guide tubes 4 at both ends of the explosion-proof housing 1. Waterproof sealing rings 5 ​​are installed inside the guide tubes 4 to ensure a tight seal with the cable, preventing moisture and humidity from entering the explosion-proof housing 1. After passing through the guide tubes 4, the cable is secured inside the explosion-proof housing 1 using clamping devices 3. The clamping devices 3 are designed with an arc shape that matches the cable's shape, ensuring stable cable fixation, facilitating cable installation and securing, and preventing shaking or displacement during use. A cavity is formed between the explosion-proof housing 1 and the partition 2, filled with fire-retardant material such as fine sand or dry... The powdered flame retardant effectively isolates the spread of flame and heat. In the event of an electrical explosion at the cable joint, the explosion-proof housing and the internal fireproof material can effectively suppress the spread of flame and heat, prevent the accident from escalating, and protect the cable joint and surrounding facilities. Subsequently, the cover plate 6 is installed on the top of the explosion-proof housing 1 with fastening bolts, ensuring that a sealing strip is provided at the edge where the explosion-proof housing 1 and the cover plate 6 connect, further enhancing the sealing performance. This explosion-proof box for intermediate joints of power transmission and transformation construction cables can effectively improve the safety and reliability of cable joints, prevent electrical accidents, and ensure the stable operation of the power system.

[0019] The waterproof sealing ring 5 is a waterproof rubber sealing ring; it improves the waterproof performance of the cable joint, prevents moisture and humidity from entering the explosion-proof housing 1, protects the cable joint from the influence of a humid environment, and extends its service life.

[0020] The fireproof material is fine sand or dry powder flame retardant; the cavity interlayer inside the explosion-proof housing 1 is filled with fireproof material, which can effectively isolate the spread of flame and heat and reduce the risk of electrical explosion of cable joints.

[0021] A sealing strip is provided at the edge where the explosion-proof housing 1 and the cover plate 6 connect; this further enhances the sealing performance of the explosion-proof box and prevents the external environment from affecting the cable joint.

[0022] like Figure 3 , Figure 4As shown, the clamping member 3 is configured with an arc structure that matches the shape of the cable; this facilitates the installation and fixing of the cable and improves installation efficiency.

[0023] Work process:

[0024] First, the cable is passed through the guide tubes 4 at both ends of the explosion-proof housing 1. Waterproof sealing rings 5 ​​are installed inside the guide tubes 4 to ensure a tight seal with the cable, preventing moisture and humidity from entering the explosion-proof housing 1. After the cable passes through the guide tubes 4, it is secured inside the explosion-proof housing 1 using clamping devices 3. The clamping devices 3 are designed with an arc shape that matches the cable's shape, ensuring stable cable fixation, facilitating cable installation and securing, and preventing shaking or displacement during use. A cavity is formed between the explosion-proof housing 1 and the partition 2, filled with fire-retardant material such as fine sand. Alternatively, dry powder flame retardants can be used to effectively isolate the spread of flames and heat. In the event of an electrical explosion at the cable joint, the explosion-proof housing and the internal fireproof material can effectively suppress the spread of flames and heat, prevent the accident from escalating, and protect the cable joint and surrounding facilities. Subsequently, the cover plate 6 is installed on the top of the explosion-proof housing 1 with fastening bolts, ensuring that a sealing strip is provided at the edge where the explosion-proof housing 1 and the cover plate 6 are connected, further enhancing the sealing performance. This explosion-proof box for intermediate joints of power transmission and transformation construction cables can effectively improve the safety and reliability of cable joints, prevent electrical accidents, and ensure the stable operation of the power system.

[0025] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. An explosion-proof box for intermediate joints of power transmission and transformation construction cables, characterized in that: The explosion-proof box for intermediate joints of power transmission and transformation construction cables includes an explosion-proof shell (1), a partition (2), a clamping component (3), a guide tube (4), a waterproof sealing ring (5), and a cover plate (6). The explosion-proof shell (1) is internally configured as a cavity structure. The partition (2) is installed inside the cavity structure, and a cavity interlayer is formed between the explosion-proof shell (1) and the partition (2). The cavity interlayer is filled with fireproof material. A boss (11) is provided inside the explosion-proof shell (1). The clamping component (3) is detachably installed on the boss (11). The guide tube (4) is installed at both ends of the explosion-proof shell (1) and is connected to the explosion-proof shell (1). The waterproof sealing ring (5) is installed inside the guide tube (4). The cover plate (6) is installed on the top of the explosion-proof shell (1) by fastening bolts.

2. The explosion-proof box for intermediate joints of power transmission and transformation construction cables as described in claim 1, characterized in that: The waterproof sealing ring (5) is a waterproof rubber sealing ring.

3. The explosion-proof box for intermediate joints of power transmission and transformation construction cables as described in claim 1 or 2, characterized in that: The fire-retardant material is fine sand or dry powder flame retardant.

4. An explosion-proof box for intermediate joints of power transmission and transformation construction cables as described in claim 1 or 2, characterized in that: A sealing strip is provided at the edge where the explosion-proof housing (1) and the cover plate (6) are connected.

5. An explosion-proof box for intermediate joints of power transmission and transformation construction cables as described in claim 1 or 2, characterized in that: The clamping element (3) is configured as an arc structure that matches the shape of the cable.

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