A drainage system for indoor cable trenches
By installing drainage pits and submersible pump systems in cable trenches, combined with level gauges and controllers, automatic drainage was achieved, solving the problem of water seepage in indoor cable trenches and improving waterproof performance and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- POWERCHINA HUADONG ENG CORP LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-26
AI Technical Summary
The existing indoor cable trenches lack drainage facilities, resulting in severe water seepage and posing a risk of power outages and personal safety hazards.
An indoor drainage pit is dug at one end of the cable trench, and the accumulated water is discharged to the outdoor drainage ditch through a submersible sewage pump and a drainage pipe. The start of the submersible sewage pump is automatically controlled by a level gauge and a controller, and a drainage interlock device is installed to prevent backflow.
It effectively reduces water accumulation in cable trenches, lowers the risk of power outages and personal safety hazards, and improves the waterproof performance of cable trenches.
Smart Images
Figure CN224281499U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of indoor cable trench laying technology, specifically to a drainage facility for indoor cable trenches. Background Technology
[0002] When indoor cable trenches are not connected to the outdoors, the conventional practice is to only design waterproofing facilities, applying a certain amount of waterproofing material to the side and bottom walls of the cable trench, without installing drainage facilities. Due to substandard construction quality or aging of the waterproofing material, the indoor cable trenches still suffer from severe water leakage. Utility Model Content
[0003] The purpose of this utility model is to provide a drainage facility for indoor cable trenches that greatly reduces the problem of water accumulation in cable trenches and lowers the risk of power outages or personal safety hazards caused by water accumulation in cable trenches.
[0004] To achieve the above objectives, this utility model employs the following technical solution:
[0005] A drainage facility for an indoor cable trench includes an indoor drainage pit dug at one end of the cable trench in the power distribution room, a submersible sewage pump installed in the indoor drainage pit, and the indoor drainage pit connected to an outdoor drainage ditch through a drainage pipe. Water accumulated in the indoor drainage pit is discharged to the outdoor drainage ditch through the submersible sewage pump and the drainage pipe.
[0006] Furthermore, a level gauge is installed in the indoor drainage pit to measure the amount of water accumulated in the indoor drainage pit.
[0007] Furthermore, it also includes a controller, and the submersible pump and the level gauge are respectively connected to the controller in communication; when the level gauge detects a high level signal, the submersible pump starts to run automatically.
[0008] Furthermore, the outlet of the drain pipe is equipped with a drain interlocking device, which is communicatively connected to the controller.
[0009] Compared with the prior art, this utility model has the following advantages:
[0010] This utility model provides a drainage facility for indoor cable trenches, which greatly reduces the problem of water accumulation in cable trenches and lowers the risk of power outages or personal safety hazards caused by water accumulation in cable trenches. Attached Figure Description
[0011] Figure 1 This is a top view of the present invention.
[0012] Figure 2 This is a longitudinal sectional view of the present invention.
[0013] Figure 3 This is a partially enlarged longitudinal sectional view of the present invention.
[0014] Reference numerals in the attached drawings: 1. External wall of the power distribution unit; 2. Internal cable trench of the power distribution unit; 3. Internal drainage pit; 4. Submersible sewage pump; 5. External drainage ditch; 6. Drainage interlocking device; 7. Drainage pipe; 8. Level gauge; 9. External ground. Detailed Implementation
[0015] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.
[0016] like Figure 1 , 2 As shown in Figure 3, a drainage facility for an indoor cable trench is provided. The exterior wall of the power distribution building 1 is connected to the outdoor ground level 9. An indoor cable trench 2 is excavated circumferentially inside the building. The bottom of the indoor cable trench 2 is lower than the horizontal plane of the outdoor ground level 9. An indoor drainage pit 3 is further excavated on the lower side of one end of the indoor cable trench 2. A submersible pump 4 is installed in the indoor drainage pit 3. The indoor drainage pit 3 is connected to the outdoor drainage ditch 5 through a drainage pipe 7. The water accumulated in the indoor drainage pit 3 is discharged to the outdoor drainage ditch 5 through the submersible pump 4 and the drainage pipe 7.
[0017] The indoor drainage pit 3 is equipped with a level gauge 8 to measure the amount of water accumulated in the indoor drainage pit 3. The drainage facility of this utility model also includes a controller, and the submersible pump 4 and the level gauge 8 are respectively connected to the controller for communication; when the level gauge 8 detects a high liquid level signal, the submersible pump 4 starts to run automatically.
[0018] The outlet of the drain pipe 7 is equipped with a drain interlock device 6, which is communicatively connected to the controller. The control principle of the drain interlock device 6 is as follows: when the water level of the outdoor drainage ditch 5 is higher than its outlet, the drain interlock device 6 automatically closes the outlet of the drain pipe 7 to prevent water in the outdoor drainage ditch 5 from flowing back into the cable trench 2 in the power distribution room; at other times, the drain interlock device 6 is open.
[0019] The above description is only a preferred embodiment 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 concept 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 drainage system for an indoor cable trench, characterized in that: An indoor drainage pit is dug on the lower side of one end of the cable trench in the power distribution room. A submersible sewage pump is installed in the indoor drainage pit. The indoor drainage pit is connected to the outdoor drainage ditch through a drainage pipe. The water accumulated in the indoor drainage pit is discharged to the outdoor drainage ditch through the submersible sewage pump and the drainage pipe.
2. The drainage facility for an indoor cable trench according to claim 1, characterized in that: The indoor drainage pit is equipped with a level gauge to measure the amount of water accumulated in the indoor drainage pit.
3. The drainage facility for an indoor cable trench according to claim 2, characterized in that: It also includes a controller, and the submersible pump and the level gauge are respectively connected to the controller in communication; when the level gauge detects a high level signal, the submersible pump starts to run automatically.
4. A drainage facility for an indoor cable trench according to claim 1 or 3, characterized in that: The outlet of the drain pipe is equipped with a drain interlock device, which is communicatively connected to the controller.