Bridge condensate water drainage device
The condensate drainage device for cable trays collects the condensate in the collection box and drains it through the drainage pipe, thus solving the safety hazards caused by the accumulation of condensate in the cable trays and improving the safety of cables and power distribution rooms.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-03-31
AI Technical Summary
In humid environments, condensation buildup in cable trays can lead to cable aging, reduced insulation performance, and even fires or short circuits in electrical equipment, posing safety hazards.
Design a condensate drainage device for cable trays, including a water collection box, a flow collection tank, a detachable filter screen, and a drainage pipe. The water collection box collects condensate and the drainage pipe discharges it, thus preventing condensate from accumulating.
This allows for the immediate production and discharge of condensate, preventing condensate from soaking cables and clogging holes, thus improving cable lifespan and the safety of the power distribution room.
Smart Images

Figure CN224068255U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable tray construction technology, and in particular to a cable tray condensate drainage device. Background Technology
[0002] Cable trays are widely used in power, telecommunications, and construction industries to support and protect cables, pipes, and other facilities. However, current cable tray construction presents several problems: In damp environments such as basements, the openings of vertical cable trays into distribution boxes are typically sealed with fireproof putty or fireproof cotton. However, during the rainy season in southern my country, the humidity in basement electrical rooms increases significantly, leading to a substantial rise in water vapor content in the air. The low temperature in basements further lowers the surface temperature of the cable trays. When near-saturated water vapor in the air encounters these low-temperature surfaces, it quickly condenses into condensate. This condensate accumulates around the cables, which can soak them, causing aging, reduced insulation performance, and even fires. Furthermore, it can soak the fireproof putty or fireproof cotton, creating gaps between them and the opening walls of the distribution box. This allows condensate to seep into the distribution box, causing short circuits in electrical equipment, potentially leading to electric shocks and fires, and in severe cases, personal injury or death. Utility Model Content
[0003] The purpose of this invention is to provide a condensate drainage device for cable trays, thereby addressing the shortcomings in the aforementioned background technology.
[0004] The technical solution of this utility model is: a cable tray condensate drainage device, which includes a water collection box, a flow-gathering trough, a detachable filter screen, and a drainage pipe. The top of the water collection box is open, and the side wall and bottom surface are respectively provided with cable tray mounting holes and cable mounting holes. The detachable filter screen is arranged in the flow-gathering trough. The flow-gathering trough is arranged in the water collection box, with its top flush with or lower than the inner bottom surface of the water collection box, and its bottom connected to the outside of the water collection box through the drainage pipe.
[0005] Furthermore, the flow-gathering channel is provided with a first slope, the top of the first slope facing the cable mounting hole and the bottom of the slope facing the flow-draining pipe.
[0006] Furthermore, the first slope is curved, with its concave side facing the top of the water collection box.
[0007] Furthermore, the water collection box has an annular wall, the cable mounting hole is located inside the annular wall, and the drainage channel is at least partially located inside the annular wall; the annular wall has a connecting hole, one end of which is connected to the drainage channel.
[0008] Furthermore, the water collection box is provided with an annular boss, which extends from the inner sidewall of the water collection box toward the annular wall, and there is a gap between the annular wall and the annular boss.
[0009] Furthermore, a positioning wall is provided on the top of the annular boss, and there is a gap between the positioning wall and the inner sidewall of the water collection box; the positioning wall extends along the axial direction of the annular boss and is evenly distributed in several places around the annular boss.
[0010] Furthermore, the water collection box and the annular boss are both rectangular in plan view; the positioning wall is L-shaped in plan view and is located at the corner of the annular boss.
[0011] Furthermore, a condensate support extending toward the annular boss is provided on the annular wall, the top surface of the condensate support is lower than the top surface of the annular wall, the side end of the flow collection groove is located below the condensate support, and the connecting hole is vertically arranged on the condensate support.
[0012] Furthermore, the side end of the flow collection tank is provided with a second slope, the top of the second slope facing the condensate support, the bottom of the slope facing the bottom of the flow collection tank, and the detachable filter screen is provided at the top of the second slope.
[0013] Furthermore, the second slope is curved, with its convex side facing the connecting hole.
[0014] The beneficial effects of this utility model are: by collecting the condensate generated on the cable tray through the water collection box and then draining it through the drainage pipe, the condensate is generated and discharged immediately, which avoids its accumulation and soaking of cables and fireproof mud sealing holes, and prevents it from seeping into the distribution box, thereby improving the service life of cables and the safety of the distribution room. Attached Figure Description
[0015] Figure 1 This is a structural diagram of the water collection box in Embodiment 1 of this utility model;
[0016] Figure 2 This is a structural diagram of the detachable filter screen in Embodiment 1 of this utility model;
[0017] Figure 3 This is a structural diagram of the water collection box in Embodiment 2 of this utility model;
[0018] Figure 4 This is a cross-sectional view of the water collection box in Embodiment 2 of this utility model;
[0019] Figure 5 This is an appendix to the embodiments of this utility model. Figure 4 Enlarged view of the structure at point A in the middle.
[0020] In the picture:
[0021] 1. Water collection box;
[0022] 2. Flow-gathering channel;
[0023] 3. Removable filter screen;
[0024] 4. Drainage tube;
[0025] 5. Annular wall;
[0026] 6. Annular boss;
[0027] 7. Positioning wall;
[0028] 8. Condensate drain platform;
[0029] 9. Cable tray mounting holes;
[0030] 10. Cable mounting holes;
[0031] 11. Connecting hole;
[0032] 12. First slope;
[0033] 13. Second slope. Detailed Implementation
[0034] The technical solutions of the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0035] In the description of the embodiments of this utility model, it should be understood that the terms "top," "bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise expressly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model through specific circumstances.
[0036] Example 1
[0037] Reference Appendix Figure 1-2This embodiment provides a cable tray condensate drainage device, which includes a water collection box 1, a flow-gathering trough 2, a detachable filter screen 3, and a drainage pipe 4. The top of the water collection box 1 is open, and the side wall and bottom surface are respectively provided with cable tray mounting holes 9 and cable mounting holes 10. The detachable filter screen 3 is placed inside the flow-gathering trough 2. The flow-gathering trough 2 is placed inside the water collection box 1, with its top flush with or lower than the inner bottom surface of the water collection box 1, and its bottom connected to the outside of the water collection box 1 through the drainage pipe 4.
[0038] During installation, insert the end cable tray into the water collection box 1 from the top. Align the bolt holes on the side wall of the end cable tray with the cable tray mounting holes 9 on the side wall of the water collection box 1, and install bolts to secure the end cable tray to the water collection box 1. Place the water collection box 1 at the inlet of the distribution box, ensuring the bottom surface of the water collection box 1 is flush against the top surface of the distribution box. After precisely aligning the cable mounting holes 10 with the inlet of the distribution box, use wire harnesses or other conventional methods (such as applying adhesive) to secure the end cable tray, water collection box 1, and distribution box. After passing the cable through the cable mounting holes 10 and the inlet on the distribution box, seal the gap between the outer wall of the cable and the inner wall of the cable mounting holes 10 with hot melt adhesive, and then seal with waterproof adhesive to intercept condensate in the water collection box 1. Connect the end of the drain pipe 4 outside the water collection box 1 to the sewer or other structures.
[0039] When water vapor in the air condenses on the cable tray, it flows downward into the water collection box 1, and is discharged into the sewer through the collection trough 2 and the drainage pipe 4. This ensures that condensate is produced and discharged immediately, preventing it from accumulating on the outside of the cables and soaking the cables, waterproofing adhesive, or seeping into the distribution box, thus ensuring power distribution safety. The installation method of the removable filter screen 3 can be selected by those skilled in the art, such as snap-on or socket type, etc., without specific limitations here. It can filter out debris and sand particles that flow down with the condensate, preventing the drainage pipe 4 from becoming clogged.
[0040] To ensure the sealing effect, the above-mentioned cable installation holes 10 are configured in multiple ways, with only one cable passing through each cable installation hole 10. This avoids the problem that the gaps between multiple cables cannot be effectively sealed with hot melt adhesive and waterproof adhesive, and can improve the seepage prevention effect.
[0041] During implementation, the water collection box 1 can be made of fireproof glass plate, and fireproof putty can be used to seal the gaps near the contact surface between the end cable tray and the water collection box 1. This ensures electrical safety and prevents the end cable tray from being immersed in condensate for a long time, thus preventing chemical corrosion and improving the service life of the cable tray.
[0042] Example 2
[0043] Reference Appendix Figure 3-5Compared with Example 1, the difference in this example is that, in order to improve drainage efficiency, a first slope 12 is provided in the collection tank 2. The top of the first slope 12 faces the cable mounting hole 10, and the bottom of the slope faces the drainage pipe 4. The first slope 12 is curved, and its concave side faces the top of the water collection box 1. The condensate is quickly introduced into the bottom of the collection tank 2 by the height difference, and then discharged by the drainage pipe 4.
[0044] The water collection box 1 has an annular wall 5 inside, the cable mounting hole 10 is located inside the annular wall 5, and the drainage channel is at least partially located inside the annular wall 5; the annular wall 5 has a connecting hole 11, one end of which is connected to the drainage channel 2.
[0045] During installation, the end cable tray is placed between the inner wall of the water collection box 1 and the annular wall 5, allowing condensate generated by the end cable tray to enter the collection tank 2 through the connecting hole 11, bypassing the cable area. This prevents condensate from soaking the cables and, due to the large number of cables, their presence would hinder the flow of condensate to the collection tank 2. Furthermore, the cables generate heat when powered, and their surface temperature is slightly higher than the cable tray. While some condensate may be generated, the amount is very small, and it will still flow into the collection tank 2 for drainage. This method of separating the condensate from the cables and the cable tray not only protects the cables but also improves drainage efficiency.
[0046] In addition, the water collection box 1 has an annular boss 6 inside, which extends from the inner side wall of the water collection box 1 to the annular wall 5, and there is a gap between the annular wall 5 and the annular boss 6; a positioning wall 7 is provided on the top of the annular boss 6, and there is a gap between the positioning wall 7 and the inner side wall of the water collection box 1; the positioning wall 7 extends along the axial direction of the annular boss 6, and several of them are evenly distributed around the annular boss 6.
[0047] During installation, the end cable tray is inserted into the gap between the inner wall of the water collection box 1 and the positioning wall 7, which facilitates quick and accurate positioning and ensures the stability of the end cable tray until all connecting bolts between the end cable tray and the water collection box 1 are installed.
[0048] Generally, the cross-section of a cable tray is rectangular. Therefore, in this embodiment, the water collection box 1 and the annular boss 6 are preferably rectangular when viewed from above; the positioning wall 7 is preferably L-shaped when viewed from above and is located at the corner of the annular boss 6.
[0049] In addition, a condensate support 8 extending toward the annular boss 6 is provided on the annular wall 5. The top surface of the condensate support 8 is lower than the top surface of the annular wall 5. The side end of the flow collection groove 2 is located below the condensate support 8. The connecting hole 11 is vertically provided on the condensate support 8.
[0050] By extending the side end of the condensate collection tank 2 into the lower part of the condensate support 8 and configuring the connecting hole 11 vertically, the condensate generated on the cable tray can fall vertically into the condensate collection tank 2, and the part that falls vertically into the condensate collection tank 2 is also far away from the cable mounting hole 10. Compared with configuring the connecting hole 11 horizontally through the annular wall 5, it is possible to prevent the connecting hole 11 from splashing into the area where the cable accumulates.
[0051] More preferably, the side end of the flow collection tank 2 is provided with a second slope 13, the top of the second slope 13 faces the condensate support 8, the bottom of the slope faces the bottom of the flow collection tank 2, and the detachable filter screen 3 is provided at the top of the second slope 13; the second slope 13 is curved, and its convex side faces the connecting hole 11.
[0052] Compared with the prior art, the beneficial effects of this utility model are as follows: by collecting the condensate generated on the cable tray through the water collection box 1 and then discharging it through the drainage pipe 4, the condensate is generated and discharged immediately, which avoids its accumulation and soaking of the cables and the fireproof mud sealing the holes, thus preventing it from seeping into the distribution box, improving the service life of the cables and the safety of the distribution room.
[0053] The above are preferred embodiments of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A bridge condensate water drainage device, characterized by, The water collecting box, the flow collecting groove, the detachable filter screen and the drainage pipe, the top of the water collecting box is open, the side wall and the bottom are respectively provided with bridge mounting hole and cable mounting hole; the detachable filter screen is arranged in the flow collecting groove; the flow collecting groove is arranged in the water collecting box, the top is flush with or lower than the inner bottom of the water collecting box, the bottom is communicated with the outside of the water collecting box through the drainage pipe.
2. The bridge condensate water drainage arrangement of claim 1, wherein, The first slope surface is arranged in the flow collecting groove, the top of the first slope surface is towards the cable mounting hole, and the bottom is towards the drainage pipe.
3. The bridge condensate water drainage arrangement of claim 2, wherein, The first slope surface is curved, and the concave side is towards the top of the water collecting box.
4. The bridge condensate drain of any of claims 1-3, wherein, The annular wall is arranged in the water collecting box, the cable mounting hole is located in the inner side of the annular wall, and the flow collecting groove is at least partially located in the inner side of the annular wall; the annular wall is provided with a communication hole, one end of the communication hole is communicated with the flow collecting groove.
5. The bridge condensate water drainage arrangement of claim 4, wherein, The annular boss is arranged in the water collecting box, the annular boss extends from the inner side wall of the water collecting box to the annular wall, and the annular wall and the annular boss have a gap therebetween.
6. The bridge condensate water drainage arrangement of claim 5, wherein, The top of the annular boss is provided with a positioning wall, the positioning wall and the inner side wall of the water collecting box have a gap therebetween; the positioning wall extends along the axial direction of the annular boss, and a plurality of positioning walls are uniformly distributed in the circumferential direction of the annular boss.
7. The bridge condensate water drainage arrangement of claim 6, wherein, The water collecting box and the annular boss are both rectangular in plan view; the positioning wall is L-shaped in plan view and is arranged at the corner of the annular boss.
8. A bridge condensate water drainage arrangement according to any of claims 5-7, characterized in that, The annular wall is provided with a condensate water platform extending towards the annular boss, the top surface of the condensate water platform is lower than the top surface of the annular wall, the side end of the flow collecting groove is located below the condensate water platform, and the communication hole is vertically arranged on the condensate water platform.
9. The bridge condensate water drainage arrangement of claim 8, wherein, The side end of the flow collecting groove is provided with a second slope surface, the top of the second slope surface is towards the condensate water platform, and the bottom is towards the bottom of the flow collecting groove; the detachable filter screen is arranged on the top of the second slope surface.
10. The bridge condensate water drainage arrangement of claim 9, wherein, The second slope surface is curved, and the convex side is towards the communication hole.