CN219065650U - Sealing ground box for cable tunnel - Google Patents
Sealing ground box for cable tunnel Download PDFInfo
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- CN219065650U CN219065650U CN202223177101.5U CN202223177101U CN219065650U CN 219065650 U CN219065650 U CN 219065650U CN 202223177101 U CN202223177101 U CN 202223177101U CN 219065650 U CN219065650 U CN 219065650U
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- cable tunnel
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Abstract
The utility model relates to a cable tunnel sealing ground box, which comprises a sealing box body and an on-line monitoring device for ground wave signals; two waterproof through holes are formed in the sealing box body; the ground electric wave signal on-line monitoring device comprises a ground electric wave signal sensor, a main board, a battery, an antenna, a first data line, a second data line and an external power line, wherein the antenna is arranged outside the sealed box body and is communicated with a communication network inside the cable tunnel, the ground electric wave signal sensor, the main board, the battery and the first data line are arranged inside the sealed box body, two ends of the first data line are respectively connected with the ground electric wave signal sensor and the main board, the second data line is arranged in a waterproof through hole in a penetrating mode, two ends of the second data line are respectively connected with the antenna and the main board, the external power line is arranged in the waterproof through hole in a penetrating mode, and two ends of the external power line are respectively connected with the main board and a waterproof type power supply interface in the cable tunnel. The utility model can realize real-time on-line monitoring of the in-box ground wave signal, avoid the communication signal from being shielded and can be used for a long time.
Description
Technical Field
The utility model relates to the technical field of partial discharge detection of a power transmission cable grounding box and a cable tunnel grounding box sealing technology, in particular to a cable tunnel sealing box with an on-line monitoring function for ground electric wave signals.
Background
At present, a power transmission cable needs to be grounded in a cable grounding box in the process of laying the power transmission cable in a cable tunnel, and metal sheath connection or three-phase metal sheath cross interconnection is carried out in the cable grounding box. The cable grounding box main body is internally provided with a plurality of elements such as copper bars, coaxial cables, sheath protectors and the like which are connected with each other and are connected to the high-voltage cable joint through the coaxial cables. Under normal conditions, the discharge phenomenon does not occur in the cable grounding box, but when the cable joint or the internal element of the grounding box is defective, abnormal conditions such as partial discharge and the like may occur. The local discharge generates a ground wave signal, so that the detection of the ground wave signal in the cable grounding box main body is an effective means for diagnosing whether defects exist in the cable grounding box and the cable joints in the cable grounding box main body. The ground wave detection method is to decouple the electromagnetic wave generated by partial discharge by using a capacitive probe.
The tool which can be used for measuring the ground electric wave of the grounding box is a ground electric wave testing instrument. The cable operation and maintenance personnel enter the urban cable tunnel to find the grounding boxes one by one, then the box cover is opened, measurement is carried out after the electric wave tester is well regulated, and measurement data must be filled manually, so that the whole process is time-consuming and labor-consuming.
At present, the waterproof grade of the cable grounding box in the tunnel is very high, and the water accumulation can be dealt with to completely submerge the grounding box body, so that the sealing performance of the cable grounding box of the tunnel is very high, and the corrosion resistance is very high. So at present, the tunnel cable grounding box is mostly made of stainless steel, which also causes that the communication signals of the on-line monitoring equipment arranged in the grounding box are shielded by the box body and are difficult to send out. If the monitoring equipment is installed outside the grounding box, the monitoring signal will be greatly weakened and the monitoring equipment is easily corroded by the severe environment of the tunnel.
The online monitoring device has smaller volume, if no external power supply is provided, the battery is only used, and the battery needs to be replaced within half a year, so that the workload of operation and maintenance personnel is increased.
In summary, the current tunnel grounding box has no built-in ground wave on-line monitoring equipment, which causes difficulty in carrying out ground wave monitoring work of the tunnel grounding box. While not fully utilizing the tunnel communication network and the low voltage power supply.
Disclosure of Invention
The utility model aims to provide a cable tunnel sealing ground box which is provided with an on-line monitoring function of ground electromagnetic signals, avoids the problems of signal shielding and incapability of being used for a long time and is suitable for severe environments in a cable tunnel.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the cable tunnel sealing ground box is arranged in the cable tunnel and comprises a sealing box body and an on-line monitoring device for ground electric wave signals; the sealing box body is provided with a first waterproof through hole and a second waterproof through hole; the ground electric wave signal on-line monitoring device comprises a ground electric wave signal sensor, a main board, a battery, an antenna, a first data line, a second data line and an external power line, wherein the antenna is arranged outside the sealed box body and can be in communication with a communication network inside a cable tunnel, the ground electric wave signal sensor, the main board, the battery and the first data line are arranged inside the sealed box body, two ends of the first data line are respectively connected with the ground electric wave signal sensor and the main board, the second data line is arranged in the first waterproof through hole in a penetrating manner, two ends of the second data line are respectively arranged inside and outside the sealed box body, two ends of the second data line are respectively arranged in the second waterproof through hole in a penetrating manner, two ends of the external power line are respectively connected with waterproof type power interfaces inside and outside the sealed box body, and two ends of the external power line are respectively connected with the main board and a waterproof type power interface inside the cable tunnel, and the battery is connected with the main board.
The main board comprises a data processing module, a communication module, a first power interface and a second power interface, wherein the communication module is connected with the data processing module, the first power interface is respectively connected with the data processing module and the communication module, and the second power interface is respectively connected with the data processing module and the communication module; the first data line is connected with the data processing module, the second data line is connected with the communication module, the battery is connected with the first power interface, and the external power line is connected with the second power interface.
The cable tunnel sealing ground box further comprises a protection box arranged in the sealing box body, the main board and the battery are arranged in the protection box, and an opening for the first data line, the second data line and the external power line to pass through is formed in the protection box.
The protection box is fixedly arranged on the inner wall of the sealing box body.
The ground electric wave signal sensor is fixedly arranged on the inner wall of the sealed box body.
The sealed box body comprises a box body with an opening and a box door arranged at the opening, and a waterproof sealing adhesive tape is arranged at the edge of the box door.
The first waterproof through hole is formed in the top surface of the sealing box body, and the antenna is arranged outside the top of the sealing box body.
The second waterproof through hole is formed in the side face of the sealing box body.
Sealing mud is arranged in the first waterproof through hole and the second waterproof through hole.
The antenna is in communication connection with the monitoring background and/or the monitoring terminal via a communication network inside the cable tunnel.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model can realize real-time on-line monitoring of the in-box ground wave signal, avoid the communication signal from being shielded, and can be used for a long time, thereby reducing the workload of operation and maintenance personnel.
Drawings
Fig. 1 is a schematic side view of a cable tunnel seal closure of the present utility model.
Fig. 2 is a schematic front view of the cable tunnel seal box of the present utility model.
In the above figures: 1. an antenna; 2. a second data line; 3. a ground wave signal sensor; 4. a first data line; 5. a protection box; 6. a main board; 7. a battery; 8. an external power supply line; 9. sealing the box body.
Detailed Description
The utility model will be further described with reference to examples of embodiments shown in the drawings.
Embodiment one: as shown in fig. 1 and 2, a cable tunnel sealing ground box arranged in a cable tunnel comprises a sealing box body 1 and an on-line monitoring device for ground electric wave signals.
The sealing box body 9 made of stainless steel comprises a box body with an opening and a box door arranged at the opening, wherein a waterproof sealing adhesive tape is arranged at the edge of the box door, and the box door and the box body are fastened by screws. The bottom surface of the sealed housing 9 has a waterproof opening for introducing coaxial cables requiring cross-interconnection. In addition, the sealing case 9 is provided with a first waterproof type through hole and a second waterproof type through hole. The first waterproof through hole may be formed in the top surface of the sealing case 9, and the second waterproof through hole may be formed in the side surface of the sealing case 9.
The ground wave signal on-line monitoring device comprises a ground wave signal sensor 3, a main board 6, a battery 7, an antenna 1, a first data line 4, a second data line 2 and an external power line 8. The antenna 1 is disposed outside the sealed box 9 and needs to be waterproof, for example, disposed outside the top of the sealed box 9, where the antenna 1 can communicate with a communication network inside the cable tunnel and be communicatively connected with the monitoring background and/or the monitoring terminal via the communication network inside the cable tunnel. The ground wave signal sensor 3, the main board 6, the battery 7 and the first data line 4 are arranged inside the sealed box 9. The ground wave signal sensor 3 is fixedly mounted on the inner wall of the sealed box 9, for example, by gluing or adhesive tape, and is stuck on the inner wall of the sealed box 9, and directly faces the internal equipment of the sealed box 9 in a short distance, the detection range covers the internal equipment of the sealed box 9, and the detection range can cover the internal elements of the whole sealed box 9, so that operators can grasp the overall ground wave signal condition inside the sealed box 9. The ground electric wave signal sensor 3 is attached inside the sealed box 9, no other structure is used for blocking between the ground electric wave signal sensor 3 and equipment, all the elements inside the sealed box 9 are directly faced, the influence of other isolation objects is avoided, the monitoring range covers all the elements inside the box, the monitoring range is wider, and the monitoring data are more accurate. Both ends of the first data line 4 are respectively connected with the ground wave signal sensor 3 and the main board 6. The battery 7 is connected to the main board 6 by a cable. The second data line 2 is arranged in the first waterproof through hole in a penetrating way, two ends of the second data line 2 are respectively positioned inside and outside the sealed box body 9, and two ends of the second data line 2 are respectively connected with the antenna 1 and the main board 6. The external power line 8 is arranged in the second waterproof through hole in a penetrating way, two ends of the external power line 8 are respectively positioned inside and outside the sealed box body 9, and two ends of the external power line 8 are respectively connected with the main board 6 and the waterproof type power supply interface in the cable tunnel. Sealing mud is arranged in the first waterproof through hole and the second waterproof through hole after threading to seal. The first data line 4, the second data line 2 and the external power line 8 can be fixed on the inner wall of the sealed box 9 through wire buckles, and a certain distance is kept between other elements in the sealed box 9.
The main board 6 includes a data processing module, a communication module, a first power interface, and a second power interface. The communication module is connected with the data processing module, the first power interface is connected with the data processing module and the communication module respectively, and the second power interface is connected with the data processing module and the communication module respectively. The first data line 4 is connected with an interface of the data processing module, the second data line 2 is connected with an interface of the communication module, the battery 7 is connected with a first power interface, and the external power line 8 is connected with a second power interface. The data processing module is used for sending an acquisition instruction to the ground wave signal sensor 3, simply processing the acquired monitoring data, and uploading the data to the monitoring background and/or the monitoring terminal by connecting the communication module and the antenna 1 with a communication network in the cable tunnel.
The cable tunnel sealing ground box further comprises a protection box 5 arranged in the sealing box body 9, wherein the protection box 5 is fixedly arranged on the inner wall of the sealing box body 9, and is adhered to the inner wall of the sealing box body 9 through glue or adhesive tape. The main board 6 and the battery 7 are arranged in the protection box 5, and the protection box 5 is provided with an opening for the first data line 4, the second data line 2 and the external power line 8 to pass through.
Except for the antenna 1 and the external power line 8, other components are arranged on the inner wall of the sealed box body 9 and are not contacted with elements in the sealed box body 9, so that the operation of the components is not influenced, the components are not directly influenced by current and voltage in the sealed box body 9, the components are not influenced by severe tunnel environments, and the service life is long. Through the cooperation of antenna 1 and data processing module, fortune maintenance personnel can know the inside electric wave signal condition of sealed box 9 at any time at the monitor terminal, no longer need long-distance travel to carry out on-the-spot shooting work, also reduced the number of times that the chamber door opened and closed simultaneously, reduced the wearing and tearing of sealed box 9.
According to the scheme, the on-line monitoring device for the airtight protection ground electric wave signals of the sealed box body 9 is achieved through the waterproof opening on the sealed box body 9, the antenna 1 and the external power line 8 are led out, external communication and internal electrifying are achieved, the ground electric wave signals are collected by the ground electric wave signal sensor 3 and then transmitted to the main board 6 through the first data line 4, and the signals processed by the main board 6 are transmitted to the monitoring background and/or the monitoring terminal through the second data line 2 and the antenna 1. The operation and maintenance personnel can check the monitoring data on the monitoring background and/or the monitoring terminal. The ground electric wave signal condition inside the sealed box body 9 is monitored, the inspection density is increased, defects of the cable and accessories thereof can be found more quickly, the times of tunnel opening inspection by workers are reduced, and the burden and equipment loss of the workers are reduced.
The external power line 8 is connected with a waterproof type low-voltage power interface in the tunnel to provide electric energy for the whole device. The device can utilize the power supply in the tunnel, can operate for a long time, and does not need to replace the battery frequently. If the tunnel voltage power supply trips, the battery can supply power, and the monitoring equipment cannot be powered off.
The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.
Claims (10)
1. The utility model provides a cable tunnel seals ground box, sets up in cable tunnel, its characterized in that: the cable tunnel sealing ground box comprises a sealing box body and an on-line monitoring device for ground electric wave signals; the sealing box body is provided with a first waterproof through hole and a second waterproof through hole; the ground electric wave signal on-line monitoring device comprises a ground electric wave signal sensor, a main board, a battery, an antenna, a first data line, a second data line and an external power line, wherein the antenna is arranged outside the sealed box body and can be in communication with a communication network inside a cable tunnel, the ground electric wave signal sensor, the main board, the battery and the first data line are arranged inside the sealed box body, two ends of the first data line are respectively connected with the ground electric wave signal sensor and the main board, the second data line is arranged in the first waterproof through hole in a penetrating manner, two ends of the second data line are respectively arranged inside and outside the sealed box body, two ends of the second data line are respectively arranged in the second waterproof through hole in a penetrating manner, two ends of the external power line are respectively connected with waterproof type power interfaces inside and outside the sealed box body, and two ends of the external power line are respectively connected with the main board and a waterproof type power interface inside the cable tunnel, and the battery is connected with the main board.
2. The cable tunnel seal land enclosure of claim 1, wherein: the main board comprises a data processing module, a communication module, a first power interface and a second power interface, wherein the communication module is connected with the data processing module, the first power interface is respectively connected with the data processing module and the communication module, and the second power interface is respectively connected with the data processing module and the communication module; the first data line is connected with the data processing module, the second data line is connected with the communication module, the battery is connected with the first power interface, and the external power line is connected with the second power interface.
3. The cable tunnel seal land enclosure of claim 1, wherein: the cable tunnel sealing ground box further comprises a protection box arranged in the sealing box body, the main board and the battery are arranged in the protection box, and an opening for the first data line, the second data line and the external power line to pass through is formed in the protection box.
4. A cable tunnel seal land enclosure according to claim 3, wherein: the protection box is fixedly arranged on the inner wall of the sealing box body.
5. The cable tunnel seal land enclosure of claim 1, wherein: the ground electric wave signal sensor is fixedly arranged on the inner wall of the sealed box body.
6. The cable tunnel seal land enclosure of claim 1, wherein: the sealed box body comprises a box body with an opening and a box door arranged at the opening, and a waterproof sealing adhesive tape is arranged at the edge of the box door.
7. The cable tunnel seal land enclosure of claim 1, wherein: the first waterproof through hole is formed in the top surface of the sealing box body, and the antenna is arranged outside the top of the sealing box body.
8. The cable tunnel seal land enclosure of claim 1, wherein: the second waterproof through hole is formed in the side face of the sealing box body.
9. The cable tunnel seal land enclosure of claim 1, wherein: sealing mud is arranged in the first waterproof through hole and the second waterproof through hole.
10. The cable tunnel seal land enclosure of claim 1, wherein: the antenna is in communication connection with the monitoring background and/or the monitoring terminal via a communication network inside the cable tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223177101.5U CN219065650U (en) | 2022-11-29 | 2022-11-29 | Sealing ground box for cable tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223177101.5U CN219065650U (en) | 2022-11-29 | 2022-11-29 | Sealing ground box for cable tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219065650U true CN219065650U (en) | 2023-05-23 |
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ID=86375617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223177101.5U Active CN219065650U (en) | 2022-11-29 | 2022-11-29 | Sealing ground box for cable tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219065650U (en) |
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2022
- 2022-11-29 CN CN202223177101.5U patent/CN219065650U/en active Active
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