CN212158869U - Cable temperature measurement on-line monitoring device based on fiber bragg grating - Google Patents
Cable temperature measurement on-line monitoring device based on fiber bragg grating Download PDFInfo
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- CN212158869U CN212158869U CN202021026553.1U CN202021026553U CN212158869U CN 212158869 U CN212158869 U CN 212158869U CN 202021026553 U CN202021026553 U CN 202021026553U CN 212158869 U CN212158869 U CN 212158869U
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Abstract
The utility model relates to a based on fiber grating cable temperature measurement on-line monitoring device, including waiting to detect indoor fiber cable, this indoor fiber cable has three-phase cable joint, its characterized in that: the system also comprises a fiber grating sensor, a fiber grating signal processor, a background computer and a monitor; the fiber grating sensor is arranged on the outer wall of each connector of the three-phase cable connector, and the fiber grating sensor is connected to the fiber grating signal processor after being welded with the indoor fiber cable, and is electrically connected with the background computer through a communication port RS232 of the fiber grating processor, and the background computer is electrically connected with the monitor. The utility model discloses the practicality is strong, easily promotes.
Description
Technical Field
The utility model belongs to the technical field of the technique and specifically relates to a based on fiber grating cable temperature measurement on-line monitoring device is related to.
Background
In the conventional power cable temperature monitoring system, common temperature sensors are mainly divided into a contact type and a non-contact type, the contact type mainly comprises a thermal resistor, a thermocouple and the like, and a better temperature detection effect can be obtained, but detection signals are transmitted through a metal wire when the thermal resistor and the thermocouple work, so that electromagnetic disturbance can be inevitably generated in space, and short circuit danger caused by a power transmission line can be caused under extreme conditions; meanwhile, the high-frequency alternating field can also influence the metal wire, so that the metal wire generates induction eddy current heating, monitoring data is interfered, the temperature detection effect precision is insufficient, and the contact type temperature sensor belongs to a consumption type sensor, so that the stability is very limited and the cost is high during long-term work.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a based on fiber grating cable temperature measurement on-line monitoring device.
The technical scheme of the utility model is realized like this: the utility model provides a based on fiber grating cable temperature measurement on-line monitoring device, is including waiting to detect indoor fiber cable, and this indoor fiber cable has three-phase cable joint, its characterized in that: the system also comprises a fiber grating sensor, a fiber grating signal processor, a background computer and a monitor; the fiber grating sensor is arranged on the outer wall of each connector of the three-phase cable connector, and the fiber grating sensor is connected to the fiber grating signal processor after being welded with the indoor fiber cable, and is electrically connected with the background computer through a communication port RS232 of the fiber grating processor, and the background computer is electrically connected with the monitor.
Preferably: the monitor includes a display screen, a database, and an alarm.
Preferably: the outer wall of the three-phase cable joint is provided with a sealing box, the fiber bragg grating sensor is arranged in the sealing box, and the connecting end of the fiber bragg grating sensor penetrates through the side wall of the sealing box and is connected with the sealing box through a sealing element.
Preferably: the air inlet has been seted up at the seal box top, installs one-way admission valve in the air inlet, and it is gaseous to fill SF6 in to the seal box through this one-way admission valve.
Preferably: the sealing element comprises a front rubber pad, a rear rubber pad and a middle rubber column; the front rubber pad and the rear rubber pad are both disc-shaped, and the diameter of the front rubber pad and the diameter of the rear rubber pad are larger than that of the middle rubber column; the front rubber pad and the rear rubber pad are connected through the middle rubber column; and a through hole is formed in the middle of the middle rubber column, and penetrates through the front rubber pad, the rear rubber pad and the middle rubber column in sequence, and the through hole is matched with the cable output end.
Compared with the prior art, the utility model discloses the beneficial effect who brings does:
1. by adopting the fiber bragg grating sensor to detect the real-time temperature of the cable during use, the mode can avoid potential safety hazards such as fire caused by the fact that a user does not monitor in real time during use of the cable.
In addition, the optical fiber sensor is a passive device, has small volume and good insulation, and has better sensitivity, higher measurement precision and faster response time. Therefore, the detection effect is good and the detection precision is high by adopting the optical fiber optical grating sensor for detection.
2. The sealed box is covered with SF6 gas, SF6 gas has good arc extinguishing performance, and fire hazard caused by external environment and temperature rise of three-phase cable connectors can be prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic structural view of an embodiment of the present invention;
FIG. 2 is a schematic structural view of example 2;
fig. 3 is a schematic structural view of the sealing member.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the utility model discloses an on-line monitoring device based on fiber grating cable temperature measurement, including detecting indoor fiber cable, this indoor fiber cable has three-phase cable joint 100, in the utility model discloses a concrete implementation, still include fiber grating sensor 1, fiber grating signal processor 2, backstage computer 3 and monitor 4; the fiber grating sensor 1 is installed on the outer wall of each connector of the three-phase cable connector, the fiber grating sensor 1 is connected to the fiber grating signal processor 2 after being welded with an indoor fiber cable, and is electrically connected with the background computer 3 through a communication port RS232 of the fiber grating processor 2, and the background computer 3 is electrically connected with the monitor 4.
In a specific embodiment of the present invention, the monitor 4 includes a display screen, a database and an alarm.
The cable joint surface temperature is measured by using the fiber grating sensor, the cable joint is divided into three phases, the fiber grating sensor is arranged on the surface of each phase joint, the fiber grating sensor is connected to a fiber grating signal processor after being welded with an indoor fiber cable, and is connected with a background computer through a communication port RS232, the background computer stores measured temperature data and displays the temperature data on a display screen of a monitor, so that the monitoring of the cable joint temperature is realized, if the cable joint has abnormal temperature, the system automatically alarms, an MIS (management information system) interface is reserved in the system, and the temperature data of the cable joint can be transmitted to a central monitoring station through the MIS.
Compared with the prior art, the utility model discloses the beneficial effect who brings does:
by adopting the fiber bragg grating sensor to detect the real-time temperature of the cable during use, the mode can avoid potential safety hazards such as fire caused by the fact that a user does not monitor in real time during use of the cable.
In addition, the optical fiber sensor is a passive device, has small volume and good insulation, and has better sensitivity, higher measurement precision and faster response time. Therefore, the detection effect is good and the detection precision is high by adopting the optical fiber optical grating sensor for detection.
Example 2 differs from example 1 in that
As shown in fig. 2-3, in the embodiment of the present invention, the sealing box 5 is disposed on the outer wall of the three-phase cable joint 100, the fiber grating sensor 1 is disposed in the sealing box 5, and the connecting end thereof penetrates through the side wall of the sealing box 5 and is connected thereto through the sealing member 6.
The utility model discloses in the concrete embodiment, air inlet 51 has been seted up at seal box 5 top, installs one-way admission valve in the air inlet 51, and it is gaseous to have SF6 to pack in the seal box through this one-way admission valve.
In the embodiment of the present invention, the sealing member 6 includes a front rubber pad 61, a rear rubber pad 62 and a middle rubber column 63; the front rubber pad 61 and the rear rubber pad 62 are both disc-shaped, and the diameter of the front rubber pad and the diameter of the rear rubber pad are larger than that of the middle rubber column 63; the front rubber pad 61 and the rear rubber pad 62 are connected through a middle rubber column 63; and a through hole 64 is formed to sequentially pass through the axes of the front rubber pad 61, the rear rubber pad 62 and the middle rubber column 63, and the through hole is adapted to the output end of the cable.
The utility model has the advantages that:
the sealed box is covered with SF6 gas, SF6 gas has good arc extinguishing performance, and fire hazard caused by external environment and temperature rise of three-phase cable connectors can be prevented.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a based on fiber grating cable temperature measurement on-line monitoring device, is including waiting to detect indoor fiber cable, and this indoor fiber cable has three-phase cable joint, its characterized in that: the system also comprises a fiber grating sensor, a fiber grating signal processor, a background computer and a monitor; the fiber grating sensor is arranged on the outer wall of each connector of the three-phase cable connector, and the fiber grating sensor is connected to the fiber grating signal processor after being welded with the indoor fiber cable, and is electrically connected with the background computer through a communication port RS232 of the fiber grating processor, and the background computer is electrically connected with the monitor.
2. The fiber grating-based cable temperature measurement online monitoring device of claim 1, wherein: the monitor includes a display screen, a database, and an alarm.
3. The fiber grating-based cable temperature measurement online monitoring device of claim 2, wherein: the outer wall of the three-phase cable joint is provided with a sealing box, the fiber bragg grating sensor is arranged in the sealing box, and the connecting end of the fiber bragg grating sensor penetrates through the side wall of the sealing box and is connected with the sealing box through a sealing element.
4. The fiber grating-based cable temperature measurement online monitoring device of claim 3, wherein: the air inlet has been seted up at the seal box top, installs one-way admission valve in the air inlet, and it is gaseous to fill SF6 in to the seal box through this one-way admission valve.
5. The fiber grating-based cable temperature measurement online monitoring device of claim 4, wherein: the sealing element comprises a front rubber pad, a rear rubber pad and a middle rubber column; the front rubber pad and the rear rubber pad are both disc-shaped, and the diameter of the front rubber pad and the diameter of the rear rubber pad are larger than that of the middle rubber column; the front rubber pad and the rear rubber pad are connected through the middle rubber column; and a through hole is formed in the middle of the middle rubber column, and penetrates through the front rubber pad, the rear rubber pad and the middle rubber column in sequence, and the through hole is matched with the cable output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021026553.1U CN212158869U (en) | 2020-06-05 | 2020-06-05 | Cable temperature measurement on-line monitoring device based on fiber bragg grating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021026553.1U CN212158869U (en) | 2020-06-05 | 2020-06-05 | Cable temperature measurement on-line monitoring device based on fiber bragg grating |
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| CN212158869U true CN212158869U (en) | 2020-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114129936A (en) * | 2021-12-07 | 2022-03-04 | 陕西开来机电设备制造有限公司 | Mining optical fiber temperature measurement and fire extinguishing control system |
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2020
- 2020-06-05 CN CN202021026553.1U patent/CN212158869U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114129936A (en) * | 2021-12-07 | 2022-03-04 | 陕西开来机电设备制造有限公司 | Mining optical fiber temperature measurement and fire extinguishing control system |
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