Explosion-proof three-way junction box matched with electric tracing band
By installing a riot barrel and sealing buffer pad at the connection between the junction tube of the electric tropic explosion-proof tee junction box and the electric tropic belt, the problems of limited connection port length and impact force diffusion in high temperature and explosive environments are solved, and higher explosion-proof performance and safety are achieved.
Patent Information
- Application Number
- CN202421953088.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The existing electrically ducted explosion-proof tee junction boxes have the problem of limited length of the connection port and are directly exposed to the outside in high temperature and explosive environments, which leads to the explosion impact force spreading outward along the connection port, increasing safety risks.
An explosion-proof three-way junction box with electric ducts is designed. A conical structure-like anti-radical tube is provided on the outside of the connection between the terminal tube and the electrical ducts, and a sealing buffer pad is installed inside the anti-radical tube to improve the explosion-proof and impact-diffusion ability of the connection between the terminal tube and the electrical ducts.
By installing a riot-proof barrel and a sealing buffer pad at the connection between the terminal tube and the electrical heating belt, the impact force during explosion is effectively prevented, the explosion-proof performance of the junction box is improved, and safety risks are reduced.
Smart Images
Figure CN223024070U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of junction boxes, in particular to an explosion-proof three-way junction box for electric tracing belts. Background Technique
[0002] The explosion-proof three-way junction box for electric tracing belts is a special accessory for electric tracing systems, usually used in places with explosive hazardous environments such as petroleum, chemical industry, and metallurgy. Its main function is to connect the electric tracing belt with the power supply or other electric tracing belts, while ensuring safe operation in a potential explosive environment.
[0003] The three-way junction box usually has three connection ports, which can conveniently connect the electric tracing belt with the power supply or other devices to flexibly meet different installation requirements. When the three-way junction box is in use, due to being applied in a high-temperature environment, it needs to have high temperature resistance and corrosion resistance. At the same time, when connecting with the electric tracing belt, it needs to have good explosion-proof ability. Therefore, the three-way junction box generally adopts a manufacturing method of a cast aluminum alloy shell with surface plastic spraying. Once an explosion occurs, the impact resistance of the cast aluminum alloy is used to minimize the danger. However, when connecting with the electric tracing belt, part of the explosion impact force will spread outward along the connection port. The length of the existing connection port of the three-way junction box is limited and directly exposed to the outside. When multiple connection ports spread the impact force at the same time, it will still cause greater danger;
[0004] Therefore, in view of the above existing problems, this technical solution proposes an explosion-proof three-way junction box for electric tracing belts. Content of the Utility Model
[0005] The purpose of the utility model is to provide an explosion-proof three-way junction box for electric tracing belts to solve the problems raised in the above background technique.
[0006] To achieve the above object, the present utility model provides the following technical solution: an explosion-proof three-way wiring box for an electric tracing band, which includes a wiring box body. A set of box covers is detachably installed on the top of the wiring box body, and it is convenient to repair and replace the inside of the wiring box body by removing the box covers. A set of wiring pipes is installed on three side walls of the wiring box body respectively. The electric tracing band is connected to a power source or other devices through the wiring pipes. The structures of the three wiring pipes are the same. Taking one of the wiring pipes as an example, an electric tracing band terminal post is threadedly connected to the inner side of the end of the wiring pipe. A connection end is installed on one side of the electric tracing band terminal post facing the inside of the electric tracing band, and an electric tracing band is connected to the other side. The inner end of the connection end is connected to the internal wiring structure of the wiring pipe for connecting the electric tracing band. A set of explosion-proof cylinders with a conical structure is threadedly sleeved on the outer side of the end of the wiring pipe. At the same time, a sealing buffer pad is arranged inside one end of the explosion-proof cylinder far away from the wiring pipe. The cross-section of the sealing buffer pad is set as a right triangle structure. The electric tracing band passes through the inside of the explosion-proof cylinder, and under the gradual extrusion of the sealing buffer pad, its outer side is in full contact with the sealing buffer pad, so as to improve the explosion-proof, anti-impact and diffusion ability at the connection between the wiring pipe and the electric tracing band. At the same time, the structure is simple and the installation is convenient.
[0007] Compared with the prior art, the beneficial effect of the present utility model is that: by arranging a set of explosion-proof cylinders on the outer side of the connection between the wiring pipe and the electric tracing band, the explosion-proof cylinders wrap and cover the connection between the electric tracing band and the wiring pipe, so as to effectively prevent and protect the impact force from spreading along the wiring pipe when the wiring box body explodes. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 Schematic diagram of the three-dimensional structure of the explosion-proof three-way wiring box for an electric tracing band.
[0009] Figure 2 Schematic diagram of the front view structure of the explosion-proof three-way wiring box for an electric tracing band.
[0010] Figure 3 Schematic diagram of the top view structure of the explosion-proof three-way wiring box for an electric tracing band.
[0011] Figure 4 For Figure 2 The enlarged structure diagram of A in
[0012] Wherein: wiring box body 10, box cover 11, fixing bolt 12, wiring pipe 13, external thread I 14, internal thread I 15, electric tracing band terminal post 16, connection end 17, electric tracing band 18, internal thread II 19, explosion-proof cylinder 20, sealing buffer pad 21, external thread II 23. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.
[0014] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.
[0015] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.
[0016] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.
[0017] Please refer to Figures 1-4, the explosion-proof three-way junction box for the electric tracing band, including the junction box body 10, a set of box covers 11 are detachably installed on the top of the junction box body 10. By removing the box covers 11, it is convenient to repair and replace the inside of the junction box body 10. A set of wiring pipes 13 are installed on three side walls of the junction box body 10 respectively. The electric tracing band is connected to the power supply or other devices through the wiring pipes 13. The three sets of wiring pipes 13 have the same structure. Taking one set of wiring pipes 13 as an example, an electric tracing band terminal post 16 is threadedly connected to the inner side of the end of the wiring pipe 13. A connection end 17 is installed on one side of the electric tracing band terminal post 16 facing the inside of the electric tracing band 18, and the other side is connected to the electric tracing band 18. The inner end of the connection end 17 is connected to the internal wiring structure of the wiring pipe 13 for the connection of the electric tracing band. A set of explosion-proof cylinders 20 with a conical structure are threadedly sleeved on the outer side of the end of the wiring pipe 13. At the same time, a sealing buffer pad 21 is arranged inside one end of the explosion-proof cylinder 20 far away from the wiring pipe 13. The cross-section of the sealing buffer pad 21 is set as a right-angled triangle structure. The electric tracing band 18 passes through the inside of the explosion-proof cylinder 20, and under the gradual extrusion of the sealing buffer pad 21, its outer side is in full contact with the sealing buffer pad 21, so as to improve the explosion-proof and impact-resistant diffusion ability at the connection between the wiring pipe 13 and the electric tracing band 18. At the same time, the structure is simple and the installation is convenient.
[0018] In the embodiment of the present invention, both ends of the box cover 11 are symmetrically threadedly installed and removed with the junction box body 10 through two sets of fixing bolts 12. Inner threads Ⅰ15 and outer threads Ⅰ14 are respectively opened on the inner and outer sides of the end of the wiring pipe 13. Outer threads Ⅱ23 are opened on the outer side of the electric tracing band terminal post 16. Inner threads Ⅱ19 are opened on the inner side of the end of the explosion-proof cylinder 20 facing the wiring pipe 13. The outer threads Ⅱ23 are threadedly connected to the inner threads Ⅰ15, and the inner threads Ⅱ19 are threadedly connected to the outer threads Ⅰ14, so as to realize the threaded connection between the electric tracing band terminal post 16 and the wiring pipe 13, and between the explosion-proof cylinder 20 and the wiring pipe 13, that is, to effectively protect the electric tracing band 18 at the connection of the wiring pipe 13.
[0019] The material of the explosion-proof cylinder 20 is the same as that of the junction box body 10, and it has explosion-proof and impact-resistant capabilities. Generally, materials such as cast aluminum alloy are selected; while having buffering ability, it also has high-temperature resistance, so that it can effectively protect the electric tracing band 18 when encountering high temperature.
[0020] The working principle of the present utility model is as follows: At the idle part of the device, all the above-mentioned driving parts, which refer to power elements, electrical components and the adapted power supply, are connected by wires, and the electrical connection is completed in the order of the working sequence among the electrical components. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and will not explain the electrical control. When connecting and using, the electric heating tape terminal post 16 at the end of the electric heating tape 18 is threadedly connected into the wiring pipe 13, and then contacts the internal connection structure of the junction box body 10 through the connection end 17. Then, the internal thread II 19 is rotated to be threadedly connected with the external thread I 14, so that the explosion-proof cylinder 20 is wrapped outside the electric heating tape 18 and connected to the wiring pipe 13, thereby extending the explosion-proof range of the connection part of the electric heating tape 18 and the wiring pipe 13 backward, and increasing the overall explosion-proof range of the junction box body 10.
[0021] The above describes the preferred embodiments of the patent in detail, but the patent is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art, various changes can be made without departing from the purpose of the patent.
Claims
1. The electric heating cable is equipped with an explosion-proof three-way junction box, which is characterized by: The invention comprises a junction box body (10), wherein a group of box covers (11) are detachably mounted on the top of the junction box body (10), wherein a group of junction tubes (13) are mounted on three side walls of the junction box body (10), wherein the three groups of junction tubes (13) have the same structure, wherein an electric heating tape terminal post (16) is threadedly connected to the inner side of the end of the junction tube (13), wherein a connecting end (17) is mounted on the side of the electric heating tape terminal post (16) facing the inside of the electric heating tape (18), and the other side is connected to the electric heating tape (18), wherein the inner end of the connecting end (17) is connected to the internal wiring structure of the junction tube (13), wherein a group of explosion-proof tubes (20) of a cone-like structure are threadedly mounted on the outer side of the end of the junction tube (13), wherein a circle of sealing cushions (21) is arranged inside the end of the explosion-proof tube (20) away from the junction tube (13), and wherein the vertical section of the sealing cushions (21) is arranged in a right-angled triangle structure.
2. The explosion-proof three-way junction box for electric heating cable according to claim 1 is characterized in that: The two ends of the box cover (11) are symmetrically threadedly mounted and disassembled with the junction box body (10) through two sets of fixing bolts (12).
3. The explosion-proof three-way junction box for electric heating cable according to claim 2 is characterized in that: The inner and outer sides of the end of the wiring tube (13) are respectively provided with an internal thread I (15) and an external thread I (14); the outer side of the electric heating cable terminal (16) is provided with an external thread II (23); the inner side of the end of the explosion-proof tube (20) facing the wiring tube (13) is provided with an internal thread II (19); the external thread II (23) is threadedly connected to the internal thread I (15); and the internal thread II (19) is threadedly connected to the external thread I (14).
4. The explosion-proof three-way junction box for electric heating cable according to claim 3 is characterized in that: The material of the anti-riot tube (20) is the same as that of the junction box body (10).