House strong and weak electricity sharing well
By alternately setting up high-voltage and low-voltage electrical rooms in the shared shaft of high-rise residential buildings, and installing low-voltage cable tray inspection wells and fire doors in the high-voltage electrical rooms, the problems of construction and maintenance conflicts and signal interference in the shared high-voltage and low-voltage electrical shafts have been solved, achieving efficient space utilization and management.
Patent Information
- Application Number
- CN202520080827.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-14
AI Technical Summary
In existing high-rise residential buildings, where power and communication systems are shared in shafts, the power supply company's meter boxes and low-voltage equipment may not be available on every floor, resulting in empty shafts. This can lead to conflicts during construction and maintenance, severe signal interference, and unclear management.
Within the main body of the shared well, high-voltage and low-voltage rooms are alternately set up, with high-voltage and low-voltage cable trays installed respectively. A low-voltage cable tray inspection well is set up in the high-voltage room, and fire doors and protective doors are used for isolation to prevent the spread of fire. A firewall is set up in the low-voltage room to isolate signal interference.
This allows for the zoned layout of both high-voltage and low-voltage electrical equipment, reducing the shared area, avoiding conflicts between construction and maintenance, improving management efficiency, and isolating fire and signal interference.
Smart Images

Figure CN223893724U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building electrical engineering technology, specifically a combined strong and weak current well for residential buildings. Background Technology
[0002] A shared electrical shaft for residential buildings refers to a structure in which both high-voltage and low-voltage electrical lines are arranged in the same electrical shaft in a high-rise or multi-story residential building. This arrangement is primarily intended to save building space and facilitate management and maintenance.
[0003] For example, the Chinese authorized patent with announcement number CN104499689B (Power and Weak Current Shafts in High-Rise Residential Buildings) includes a power supply shaft and a weak current shaft, which are located in the same shaft and separated by partition walls. Vertically connected power supply and weak current vertical channels are respectively provided within the power supply shaft and weak current vertical channels. The partition walls are arranged horizontally in a staggered manner on each floor, thus forming a large power supply room and a small weak current room on some floors, and a small power supply room and a large weak current room on the remaining floors. The large power supply room contains a power metering box, and the large weak current room contains a weak current equipment box. This invention, by arranging the power and weak current shafts in one shaft and separating them with staggered partition walls, reduces the area of the power and weak current rooms on each floor, increases the usable floor area, ensures the necessary installation space for equipment, and increases the safety and operability of maintenance and management.
[0004] However, existing high-rise power supply shafts contain non-fire-fighting power cable trays, fire-fighting power cable trays, and power supply bureau meter boxes. Since not every floor has a power supply bureau meter box, the power supply shafts on floors without meter boxes are relatively empty. Similarly, high-rise low-voltage power supply shafts contain low-voltage cable trays and low-voltage equipment. Again, not every floor has low-voltage equipment, so the low-voltage power supply shafts on floors without low-voltage equipment are also relatively empty. While shared power and low-voltage power supply shafts in residential buildings have a smaller shared area, the mixing of power and low-voltage equipment in one shaft can easily lead to conflicts between the power supply bureau and low-voltage service providers during construction, signal interference, and disputes over maintenance and management, as well as unclear boundaries. Therefore, this does not meet current needs. To address this, we propose a shared power and low-voltage power supply shaft for residential buildings. Utility Model Content
[0005] The purpose of this utility model is to provide a shared strong and weak current manhole for residential buildings, in order to solve the problems mentioned in the background art. Existing high-rise strong current manholes contain non-fire-fighting strong current cable trays, fire-fighting strong current cable trays, and power supply bureau meter boxes. Power supply bureau meter boxes are not present on every floor, so the strong current manholes on floors without meter boxes are relatively empty. Similarly, high-rise weak current manholes contain weak current cable trays and weak current equipment. Weak current equipment is not present on every floor either, so the weak current manholes on floors without weak current equipment are also relatively empty. Although the shared area of a residential strong and weak current manhole is relatively small, the mixing of strong and weak current equipment in one manhole leads to potential conflicts between the power supply bureau and the weak current operator during construction, signal interference, disputes over later maintenance and management, and unclear boundaries.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined strong and weak current well for residential buildings, comprising: a main body of the combined well, the main body of the combined well including a strong current room and a weak current room, which are installed alternately; a strong current cable tray is provided on one side of both the strong current room and the weak current room, and a weak current cable tray is provided on the other side of both the strong current room and the weak current room; a power supply station meter box is installed inside the strong current room, and weak current equipment is installed inside the weak current room.
[0007] Preferably, a high-voltage non-fire-fighting cable tray is installed on one side of the power supply bureau meter box and the low-voltage equipment, and a high-voltage fire-fighting cable tray is installed on the other side of the power supply bureau meter box and the low-voltage equipment.
[0008] Preferably, a low-voltage cable tray inspection well is provided on one side of the high-voltage fire protection cable tray inside the high-voltage room, and a fire wall is provided between the low-voltage cable tray inspection well and the high-voltage fire protection cable tray. A fire wall is also provided between the high-voltage fire protection cable tray and the low-voltage cable tray inside the low-voltage room.
[0009] Preferably, a protective assembly is provided on one side of the low-voltage cable tray inspection well. The protective assembly includes a first fire door and a second protective door, with the second protective door abutting the top of the current floor and having a height of 400mm.
[0010] Preferably, the length and width of the inspection well for the low-voltage cable tray are the same as the length and width of the opening for the low-voltage cable tray, and the length and width of the opening for the low-voltage cable tray are 5cm outward from each side of the low-voltage cable tray.
[0011] Preferably, the weak current cable trays and strong current cable trays are fireproofed at each floor slab where they pass through.
[0012] Preferably, the fireproof sealing material is fireproof putty.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] (1) This utility model installs high-voltage cable trays and low-voltage cable trays in the main body of the shared shaft of a high-rise residential building, respectively set on both sides of the shaft, forming a vertical channel for high-voltage and low-voltage electricity. The floor shaft with the power supply bureau's meter box is the high-voltage room, and the floor shaft with low-voltage equipment is the low-voltage room. The high-voltage room and the low-voltage room appear alternately, which is convenient for different construction and maintenance units to carry out operations. The low-voltage cable tray inspection well is set in the high-voltage room to play a fireproof isolation role for the low-voltage cable tray. By setting the first fire door and the second protective door of the inspection well, it is convenient to inspect the cables of the low-voltage cable tray through the low-voltage cable tray inspection well. The project requires maintenance, minimizes the overall shared area, maximizes the usable floor area, and allows for separate installation of high-voltage and low-voltage equipment. This enables separate construction by the power supply company and low-voltage service providers, minimizing interference and accelerating project progress. Post-construction maintenance is also seamless, simplifying management. Furthermore, the firewalls in the inspection shafts provide fire protection and isolation against interference between high-voltage and low-voltage signals. This addresses the issues of existing high-voltage shafts in high-rise buildings containing non-fire-fighting high-voltage cable trays, fire-fighting high-voltage cable trays, and power supply company meter boxes (which are not present on every floor, leaving some floors with empty shafts). Similarly, high-rise low-voltage shafts contain low-voltage cable trays and equipment (also not present on every floor, leaving some floors with empty shafts). While shared high-voltage and low-voltage shafts in residential buildings also have a smaller shared area, the mixing of equipment in one shaft can lead to conflicts between the power supply company and low-voltage service providers during construction, signal interference, disputes over maintenance and management, and unclear boundaries. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall vertical structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the high-voltage room structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the low-voltage room structure of this utility model.
[0018] In the diagram: 1. Main body of the shared manhole; 2. High-voltage electrical room; 3. Low-voltage electrical room; 4. Low-voltage cable tray; 5. Fireproof sealing material; 6. First fire door of the manhole; 7. Second protective door of the manhole; 8. Power supply bureau meter box; 9. Low-voltage equipment; 10. Low-voltage cable tray manhole; 11. High-voltage cable tray; 12. Manhole protective components; 13. High-voltage fire-fighting cable tray; 14. Manhole firewall; 15. High-voltage non-fire-fighting cable tray. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] Please see Figure 1-3 This utility model provides an embodiment of a residential combined strong and weak current electrical well, comprising: a combined well body 1, the combined well body 1 including a strong current room 2 and a weak current room 3, which are installed alternately; a strong current cable tray 11 is provided on one side of both the strong current room 2 and the weak current room 3, and a weak current cable tray 4 is provided on the other side of both the strong current room 2 and the weak current room 3; a power supply bureau meter box 8 is installed inside the strong current room 2; a weak current device 9 is installed inside the weak current room 3; a inspection well protection component 12 is provided on one side of the weak current cable tray inspection well 10, the inspection well protection component 12 including a first fire door 6 and a second protective door 7; fireproof sealing material 5 is used to seal the weak current cable tray 4 and the strong current cable tray 11 where they pass through each floor slab; a strong current non-fire-fighting cable tray 15 is provided on one side of both the power supply bureau meter box 8 and the weak current device 9, and a strong current fire-fighting cable tray 13 is provided on the other side of both the power supply bureau meter box 8 and the weak current device 9;
[0021] In the main body 1 of the shared electrical shaft of the high-rise residential building, the high-voltage cable tray 11 and the low-voltage cable tray 4 are respectively set on both sides of the shaft, forming vertical channels for high-voltage and low-voltage electricity. The electrical shaft on the floor with the power supply bureau's meter box 8 is the high-voltage room 2, and the electrical shaft on the floor with low-voltage equipment 9 is the low-voltage room 3. The high-voltage and low-voltage rooms alternate to facilitate the work of different construction and maintenance units. Since the high-voltage equipment is more prone to failure and fire than the low-voltage equipment 9, a low-voltage cable tray inspection shaft 10 is set up in the high-voltage room 2 to provide fire isolation for the low-voltage cable tray 4. Because the low-voltage cable tray 4 requires construction and subsequent maintenance of the cables inside, the low-voltage cable tray inspection shaft 10 is equipped with a first fire door 6 and a second protective door 7. Both the first fire door 6 and the second protective door 7 have fire isolation functions to prevent fires caused by failures in the power supply bureau's meter box. Fire affects low-voltage cables. The purpose of setting up the first fire door 6 in the inspection well is to facilitate the early installation of low-voltage cables by the low-voltage construction unit, and also for later maintenance and repair. The second fire door 7 in the inspection well is attached to the current floor ceiling, with a door height of 400mm. The purpose of the second fire door 7 in the inspection well is to facilitate the construction unit to carry out fireproof sealing construction at the opening where the cable tray passes through the floor slab, and to remove the fireproof sealing material when replacing cables later. No fire door is set up in the low-voltage room 3 to facilitate the laying of horizontal cable trays between the vertical low-voltage cable tray 4 and the low-voltage equipment 9. The length and width of the low-voltage cable tray inspection well 10 are the same as the length and width of the opening of the low-voltage cable tray 4. The length and width of the opening of the low-voltage cable tray 4 are extended outward by 5cm on each side of the low-voltage cable tray 4, so as to minimize the overall size of the combined strong and weak current well. In this way, the area occupied by the combined strong and weak current well is minimized, and the usable floor area of the residential building is optimized.
[0022] Please see Figure 2 , 3A low-voltage cable tray inspection well 10 is installed on one side of the high-voltage fire-fighting cable tray 13 inside the high-voltage room 2. A fire wall 14 is installed between the low-voltage cable tray inspection well 10 and the high-voltage fire-fighting cable tray 13. A fire wall 14 is also installed between the high-voltage fire-fighting cable tray 13 and the low-voltage cable tray 4 inside the low-voltage room 3. The fire wall 14 serves as fireproof isolation and isolation between high-voltage and low-voltage signal interference.
[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A combined electrical and telecommunications manhole for residential buildings, comprising a main body (1), characterized in that: The main body (1) of the shared well includes a high-voltage room (2) and a low-voltage room (3). In the vertical direction, the high-voltage room (2) and the low-voltage room (3) are alternately arranged so that each floor is equipped with either the high-voltage room (2) or the low-voltage room (3). A high-voltage cable tray (11) is provided on one side of both the high-voltage room (2) and the low-voltage room (3), and a low-voltage cable tray (4) is provided on the other side of both the high-voltage room (2) and the low-voltage room (3). A power supply bureau meter box (8) is installed inside the high-voltage room (2), and low-voltage equipment (9) is installed inside the low-voltage room (3).
2. A residential combined power and communication well according to claim 1, characterized in that: A high-voltage non-fire-fighting cable tray (15) is provided on one side of the power supply bureau meter box (8) and the low-voltage equipment (9), and a high-voltage fire-fighting cable tray (13) is provided on the other side of the power supply bureau meter box (8) and the low-voltage equipment (9).
3. A residential combined power and communication well according to claim 2, characterized in that: A low-voltage cable tray inspection well (10) is provided on one side of the high-voltage fire-fighting cable tray (13) inside the high-voltage room (2). A fire wall (14) is provided between the low-voltage cable tray inspection well (10) and the high-voltage fire-fighting cable tray (13). A fire wall (14) is also provided between the high-voltage fire-fighting cable tray (13) and the low-voltage cable tray (4) inside the low-voltage room (3).
4. A residential combined power and communication well according to claim 3, characterized in that: A manhole protection component (12) is provided on one side of the low-voltage cable tray inspection well (10). The manhole protection component (12) includes a first fire door (6) and a second protective door (7). The second protective door (7) is installed on the top plate of the current floor and is 400mm high.
5. A residential combined power and communication shaft according to claim 4, characterized in that: The length and width of the inspection well (10) of the low-voltage cable tray are the same as the length and width of the opening of the low-voltage cable tray (4). The length and width of the opening of the low-voltage cable tray (4) are set by extending 5cm outward from each of the length and width sides of the low-voltage cable tray (4).
6. A residential combined power and communication shaft according to claim 1, characterized in that: The weak current cable tray (4) and the strong current cable tray (11) are all fireproofed at the points where they pass through each floor slab using fireproof sealing material (5).
7. A residential combined power and communication shaft according to claim 6, characterized in that: The fireproof sealing material (5) is fireproof putty.
Citation Information
Patent Citations
Strong and weak electrical shafts in high-rise residential buildings
CN104499689B