Condensation-proof closed junction box

Abstract

The utility model provides a kind of anti-condensation sealed terminal box, it includes terminal box main body, the opening end of terminal box main body is equipped with terminal box end cover, the middle part of terminal box end cover end face is equipped with through-hole, and terminal box end cover is equipped with observation window at through-hole, the inner wall of terminal box end cover is equipped with installation pillar, and dry agent bag is detachably arranged on installation pillar, and dry agent sandbag is located at the visual place of observation window.The utility model has the beneficial effects that: the device is provided with visual observation window and modular dry agent sandbag on terminal box end cover, using the moisture absorption capacity of dry agent sandbag, fundamentally eliminates the problem of condensation in sealed terminal box due to temperature difference, effectively guarantees the insulation performance of equipment and the reliability of terminal post connection;The visual design of observation window enables operation and maintenance personnel to intuitively monitor the state of dry agent without opening the cover, and using installation pillar makes the replacement operation of dry agent more convenient, greatly reduces long-term operation and maintenance cost and workload.

Description

Technical Field

[0001] This utility model relates to a sealed junction box, specifically a sealed junction box that prevents condensation. Background Technology

[0002] Sealed junction boxes are fundamental components in electrical equipment and systems that enable wire connections, branching, transitions, and provide critical protection. They are widely used in numerous fields such as power, communications, transportation, and industrial automation. Internally, they typically contain multiple exposed metal terminals for reliably connecting single-core or multi-core wires. To ensure their protection level and prevent the intrusion of external contaminants such as dust and moisture, the junction box body and end caps are usually rigorously sealed using materials such as sealing rings and sealant, forming a relatively isolated, sealed space from the external environment.

[0003] Although this sealing structure effectively prevents the ingress of external liquid water, in actual operation, especially in environments with seasonal changes and significant day-night temperature differences (such as coastal areas, underground pipe networks, and outdoor cabinets), the junction box faces a severe condensation problem. This is because during the day, when temperatures are higher, the air temperature inside the box rises, and the moisture content in the air relatively increases. At night or when the ambient temperature drops sharply, the junction box casing and internal metal components (such as terminals) cool rapidly due to their superior heat capacity and thermal conductivity compared to air. When the temperature of these surfaces drops below the dew point temperature of the air inside the box, water vapor in the air condenses into liquid water droplets on their surfaces.

[0004] This condensation phenomenon can cause a series of serious equipment failures and safety hazards, such as insulation degradation, corrosion of terminals and wires, and high maintenance costs.

[0005] Currently, most traditional sealed junction boxes on the market are designed primarily for "physical sealing," relying solely on their structure to block external moisture, lacking mechanisms to actively intervene in or eliminate existing moisture or condensation caused by temperature differences inside the box.

[0006] Therefore, there is an urgent need for a sealed junction box that prevents condensation. Utility Model Content

[0007] The purpose of this invention is to address the shortcomings and defects of existing technologies by providing a condensation-proof sealed junction box. This device utilizes a visual observation window and modular desiccant sandbags on the junction box end cover. By leveraging the moisture-absorbing capacity of the desiccant sandbags, it fundamentally eliminates the problem of condensation caused by temperature differences inside the sealed junction box, effectively ensuring the insulation performance of the equipment and the reliability of the terminal connections. The visual design of the observation window allows maintenance personnel to directly monitor the desiccant status without opening the cover. At the same time, the use of mounting supports makes the desiccant replacement operation simpler, significantly reducing long-term maintenance costs and workload.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a sealed junction box for preventing condensation, comprising a junction box body, a junction box end cover at the open end of the junction box body, a through hole in the middle of the end face of the junction box end cover, and an observation window installed at the through hole of the junction box end cover, an installation support installed on the inner wall of the junction box end cover, and a desiccant bag detachably installed on the installation support, with the desiccant bag located in the visible position of the observation window.

[0009] Furthermore, the desiccant bag is provided with a mounting part for cooperating with the mounting support. The mounting part is an extension of the side edge at both ends of the desiccant bag, and the extension of the side edge is provided with a support through hole for the mounting support to pass through.

[0010] Furthermore, the mounting post is a threaded post, and the extended side of the mounting post is fixed by a nut.

[0011] Furthermore, the observation window and the junction box end cover are filled with sealant.

[0012] Furthermore, the junction box body is provided with terminals for connecting wires.

[0013] Furthermore, the desiccant sandbag is a color-changing silica gel desiccant.

[0014] Furthermore, the junction box end cover is threadedly connected to the junction box body, and a sealing ring is provided at the connection between the junction box body and the junction box end cover.

[0015] The beneficial effects of this utility model after adopting the above technical solution are as follows: This device, by setting a visual observation window and modular desiccant sandbags on the junction box end cover, utilizes the moisture absorption capacity of the desiccant sandbags to fundamentally eliminate the problem of condensation caused by temperature differences inside the sealed junction box, effectively ensuring the insulation performance of the equipment and the reliability of the terminal connection; the visual design of the observation window allows maintenance personnel to intuitively monitor the desiccant status without opening the cover. At the same time, the use of the mounting support makes the desiccant replacement operation more convenient, significantly reducing long-term maintenance costs and workload. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 yes Figure 1 The corresponding decomposition state diagram.

[0019] Figure 3 This utility model contains a schematic diagram of the junction box end cover.

[0020] Figure 4 yes Figure 3 The corresponding right-view structural diagram.

[0021] Figure 5 This is a schematic diagram of the desiccant sandbag in this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Junction box body; 2. Desiccant sandbag; 3. Junction box end cover; 4. Observation window; 5. Mounting support; 6. Side extension edge; 7. Support through hole; 8. Terminal post 1-1. Detailed Implementation

[0023] See Figures 1-5 As shown, the technical solution adopted in this specific embodiment is as follows: it includes a junction box body 1, a junction box end cover 3 is provided at the open end of the junction box body 1, a through hole is provided in the middle of the end face of the junction box end cover 3, and an observation window 4 is installed at the through hole of the junction box end cover 3. An installation support 5 is installed on the inner wall of the junction box end cover 3, and a desiccant bag 2 is detachably provided on the installation support 5, and the desiccant bag 2 is located in the visible position of the observation window 4.

[0024] More specifically, the desiccant bag 2 is provided with a mounting part for cooperating with the mounting support 5. The mounting part is a side extension 6 provided at both ends of the desiccant bag 2, and the side extension 6 is provided with a support through hole 7 for the mounting support 5 to pass through.

[0025] More specifically, the mounting post 5 is a threaded post, and the side extension 6 is fixed to the mounting post 5 by a nut. The desiccant sandbag 2 is installed and placed through the mounting post 5, which allows the staff to quickly replace the desiccant sandbag 2.

[0026] More specifically, sealant is used to fill the space between the observation window 4 and the junction box end cover 3. This ensures the airtightness of the junction box end cover 3 and prevents moisture from entering.

[0027] More specifically, the junction box body 1 is provided with terminals 1-1 for connecting wires.

[0028] More specifically, desiccant bag 2 is a color-changing silica gel desiccant. Color-changing silica gel is an indicator adsorbent with high added value and high technical content, made from fine porous silica gel, a highly active adsorbent material, through deep processing. It belongs to the high-end adsorbent desiccant category and has the characteristic of changing color.

[0029] More specifically, the junction box end cover 3 is threadedly connected to the junction box body 1, and a sealing ring is provided at the connection between the junction box body 1 and the junction box end cover 3. This ensures a certain degree of sealing between the junction box body 1 and the junction box end cover 3.

[0030] The working principle of this utility model is as follows: After completing the wiring operation, the worker can suspend the desiccant sandbag 2 from the side extension edges 6 on both sides to the mounting support 5, and install the nuts on the mounting support 5 so that the desiccant sandbag 2 is placed on the junction box end cover 3 and positioned in the observation window 4. Then, the worker can install the junction box end cover 3 on the junction box body 1. After a period of use, the worker can observe the desiccant sandbag 2 through the observation window 4. When the desiccant sandbag 2 is found to have changed color, the worker can remove the junction box end cover 3 and replace it with a new desiccant sandbag 2.

[0031] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A sealed junction box for preventing condensation, characterized in that: It includes a junction box body (1), a junction box end cover (3) is provided at the open end of the junction box body (1), a through hole is provided in the middle of the end face of the junction box end cover (3), and an observation window (4) is installed at the through hole of the junction box end cover (3). An installation support (5) is installed on the inner wall of the junction box end cover (3), and a desiccant sandbag (2) is detachably provided on the installation support (5), and the desiccant sandbag (2) is located in the visible position of the observation window (4).

2. The anti-condensation sealed junction box according to claim 1, characterized in that: The desiccant sandbag (2) is provided with an installation part for cooperating with the installation support (5). The installation part is a side extension (6) provided at both ends of the desiccant sandbag (2), and the side extension (6) is provided with a support through hole (7) for the installation support (5) to pass through.

3. The anti-condensation sealed junction box according to claim 1, characterized in that: The mounting post (5) is a threaded post, and the mounting post (5) fixes the side extension (6) with a nut.

4. The anti-condensation sealed junction box according to claim 1, characterized in that: The observation window (4) and the junction box end cover (3) are filled with sealant.

5. The anti-condensation sealed junction box according to claim 1, characterized in that: The junction box body (1) is provided with terminals (1-1) for connecting wires.

6. The anti-condensation sealed junction box according to claim 1, characterized in that: The desiccant sandbag (2) is a color-changing silica gel desiccant.

7. The anti-condensation sealed junction box according to claim 1, characterized in that: The junction box end cover (3) is threadedly connected to the junction box body (1), and a sealing ring is provided at the connection between the junction box body (1) and the junction box end cover (3).

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