CN210863893U - Cable terminal fault on-line monitoring device - Google Patents
Cable terminal fault on-line monitoring device Download PDFInfo
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- CN210863893U CN210863893U CN201921132128.8U CN201921132128U CN210863893U CN 210863893 U CN210863893 U CN 210863893U CN 201921132128 U CN201921132128 U CN 201921132128U CN 210863893 U CN210863893 U CN 210863893U
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Abstract
The utility model provides a cable termination trouble on-line monitoring device belongs to electrical safety technical field. The method comprises the following steps: the monitoring terminal is in communication connection with the output end of the programmable controller and is provided with a display module, a judgment module and an alarm module. The cable temperature sensor is arranged on the cable at the cable terminal, the temperature change of the cable terminal is detected in real time, the detected temperature is transmitted to the monitoring terminal, the temperature is displayed, an alarm is given when the temperature is obviously changed, a worker is prompted to overhaul and maintain, the operation intensity of the worker is reduced, and the potential safety hazard that the worker cannot accurately find the fault of the cable terminal in time is eliminated. The method and the device realize the prejudgment of the cable terminal fault, can find the hidden fault danger in advance, and can perform preventive treatment in advance.
Description
Technical Field
The utility model belongs to the technical field of electrical safety, concretely relates to cable termination trouble on-line monitoring device.
Background
The high-voltage cable is widely applied to various fields of electric power, petrochemical industry, metallurgy, railway ports, buildings and the like. However, due to manufacturing defects of the high-voltage cable terminal and the influence of environmental factors, part of the cable terminal is subjected to discharge bursting along with the time, the discharge cable terminal bursting is random, and when the load is possibly the maximum, and the humidity is possibly the maximum, the power cable terminal is cracked for enterprises, so that the production and operation of equipment are directly influenced, and the production of the enterprises is influenced. In order to reduce the loss of production enterprises caused by the burst of cable terminals and find out problematic cable terminals in time, the method is particularly important, and the problematic fault cable terminals are mainly found out by means of manual night patrol at present, but the problems cannot be found out accurately in real time by the manual night patrol, and potential safety hazards exist.
Disclosure of Invention
In view of this, the utility model provides a cable termination trouble on-line monitoring device to real-time on-line monitoring cable termination fault status, solve exist among the prior art because artifical night patrol can not in time, the accurate cable termination trouble of discovering, have the technical problem of potential safety hazard.
The utility model provides a technical scheme that its technical problem adopted is:
an on-line cable termination fault monitoring device comprising:
the cable temperature sensor is arranged on the cable near the cable terminal and used for detecting the operation temperature of the cable near the cable terminal;
the cable temperature sensor is electrically connected with the input end of the programmable controller; and
the monitoring terminal is in communication connection with the output end of the programmable controller and is provided with a display module for displaying a greenhouse value, a judgment module for judging whether a cable near the cable terminal is over-temperature or not and an alarm module for emitting a sound signal.
Preferably, the cable temperature sensor is an infrared temperature sensor.
Preferably, the number of the cable temperature sensors is at least two.
Preferably, the cable terminal fault online monitoring device further comprises a background temperature sensor for detecting the background temperature of the environment, wherein the background temperature sensor is arranged near the cable temperature sensor and keeps a distance of at least 30cm with the cable near the cable terminal; the background temperature sensor is electrically connected with the input end of the programmable controller.
Preferably, the cable termination fault online monitoring device further includes: the cable groove is arranged around a cable of the cable terminal and used for laying the cable, a strip-shaped temperature measuring hole is formed in the cable groove, and sliding grooves are symmetrically formed in two sides of the cable groove; the sliding seat is connected in the sliding groove in a sliding mode and provided with a driving mechanism, the cable temperature sensor is fixedly installed on the sliding seat, and the cable temperature sensor can detect the cable temperature of the cable terminal through the temperature measuring hole.
Preferably, the driving mechanism is provided with a relay switch, and the relay switch is electrically connected with the output end of the programmable controller.
Preferably, actuating mechanism includes drive wheel and drive controller, the drive wheel set up in the spout, and can roll in the spout, drive controller connects the drive wheel is used for control the drive wheel is forward or backward roll, drive controller electric connection relay switch.
Preferably, the programmable controller is one of Siemens S series programmable controllers.
According to the above technical scheme, the utility model provides a cable termination trouble on-line monitoring device, its beneficial effect is: through set up on cable terminal's cable temperature sensor, the temperature variation at real-time detection cable terminal to with the temperature transmission who detects extremely monitor terminal shows, and when obvious change appears in the temperature, sends out the police dispatch newspaper, the suggestion staff overhauls and maintains. On the one hand, the real-time monitoring of the fault state of the cable terminal is realized, the operation intensity of operators is reduced, and the potential safety hazard that the operators cannot accurately find the fault of the cable terminal in time is eliminated. On the other hand, the cable temperature sensor is used for monitoring cable faults for a long time, once the temperature is abnormal, the fact that the cable terminal is abnormal is proved, the method is a pre-judging mode for the cable terminal faults, potential fault hazards can be found in advance, prevention processing is carried out in advance, and the situation that the cable terminal bursts to cause safety accidents is avoided.
Drawings
Fig. 1 is a schematic circuit logic diagram of the cable termination fault online monitoring device.
Fig. 2 is a schematic structural diagram of the cable termination fault online monitoring device.
In the figure: the system comprises a cable terminal fault online monitoring device 10, a cable temperature sensor 100, a programmable controller 200, a monitoring terminal 300, a display module 310, a judgment module 320, an alarm module 330, a background temperature sensor 400, a cable groove 500, a temperature measuring hole 510, a sliding groove 520, a sliding seat 600 and a driving wheel 610.
Detailed Description
The following combines the drawings of the utility model to further elaborate the technical scheme and technical effect of the utility model.
Referring to fig. 1, in an embodiment, an online cable termination fault monitoring device 10 is used for monitoring a working state of a cable termination in real time and accurately finding a cable termination fault in time. The method comprises the following steps: cable temperature sensor 100, programmable controller 200, and monitoring terminal 300.
The cable temperature sensor 100 is disposed on a cable near a cable terminal to detect an operating temperature of the cable near the cable terminal. The programmable controller 200 has at least one input and at least one output, and the cable temperature sensor 100 is electrically connected to the input of the programmable controller 200. The monitoring terminal 300 is communicatively connected to the output end of the programmable controller 200, and the monitoring terminal 300 has a display module 310 for displaying a greenhouse value, a determination module 320 for determining whether a cable near the cable terminal is over-temperature, and an alarm module 330 for emitting a sound signal.
For example, the cable temperature sensor 100 is an infrared temperature sensor, and is disposed above the cable near the cable end, and an infrared detection light hole of the infrared temperature sensor faces the cable above, and sequentially detects the operating temperature of the cable. The infrared temperature sensor is convenient to detect and small in interference of environmental factors, and detection errors generated by the fact that the cable temperature sensor 100 is affected by the factors or the environmental factors can be reduced. The cable temperature sensor 100 is connected with an input end of the programmable controller 200 through a serial port line, the programmable controller 200 is in communication connection with the monitoring terminal 300 through a local area network or an ethernet, and a cable working temperature detected by the cable temperature sensor 100 is transmitted to the monitoring terminal 300 through the programmable controller 200 and is displayed by the display module 310 for reference of an operator. And simultaneously transmitted to the judging module 320, and compared with a preset highest temperature threshold in the judging module 320, when the working temperature of the cable detected by the cable temperature sensor 100 is greater than the preset highest temperature threshold, the alarm module 330 is triggered to send out an alarm to prompt an operator to perform inspection and maintenance.
It should be noted that, in the monitoring terminal 300, the display module 310, the judgment module 320 and the alarm module 330 are only related to the parallel connection or the serial connection of the hardware structure, wherein the computer program for comparing and judging the values adopted by the judgment module 320 is a computer program known by those skilled in the art, and the present invention does not relate to the improvement thereof.
The programmable controller 200 may be one of Siemens S series programmable controllers such as S7-200, S7-300, S7-400, S7-1200, etc.
Preferably, in order to further reduce the influence of environmental factors or self-faults on the cable temperature sensors 100 and the occurrence of inaccurate detection results, the number of the cable temperature sensors 100 is at least two, and preferably three, so that when the working temperature of the cable detected by two of the three cable temperature sensors 100 is greater than a preset maximum temperature threshold, it is determined that the cable terminal is over-temperature, and a fault of the cable terminal is prompted.
Furthermore, the cable termination failure on-line monitoring device 10 further includes a background temperature sensor 400 for detecting the background temperature of the environment, wherein the background temperature sensor 400 is disposed near the cable temperature sensor 100 and is spaced from the cable near the cable termination by at least 30 cm. The background temperature sensor 400 is electrically connected to an input terminal of the programmable controller 200. The background temperature sensor 400 detects an ambient temperature value of the cable terminal and transmits the ambient temperature value to the judging module 320, the judging module 320 obtains a net temperature rise of cable operation according to a difference between the received cable operating temperature value and the ambient temperature value, and judges and prompts whether a cable fault exists according to the net temperature rise so as to eliminate a deviation of cable operating temperature detection caused by ambient temperature change and enable a monitoring judgment result to have reliability.
It is to be noted that the result of judging something based on the temperature difference belongs to a computer program that is known to those skilled in the art or available without creative efforts, and does not relate to the improvement of the computer program itself. The above description of the determination process is only for the purpose of facilitating understanding of the technical solution of the present invention.
Referring to fig. 2, in a preferred embodiment, the cable termination failure on-line monitoring device 10 further includes a cable trough 500 and a sliding seat 600, wherein the cable trough 500 is disposed around the cable of the cable termination for laying the cable. The cable groove 500 is provided with a strip-shaped temperature measuring hole 510, sliding grooves 520 are symmetrically formed in two sides of the cable groove, the sliding seat 600 is connected to the sliding grooves 520 in a sliding mode and is provided with a driving mechanism, the cable temperature sensor 100 is fixedly installed on the sliding seat 600, and the cable temperature sensor 600 can detect the cable temperature of the cable terminal through the temperature measuring hole 510. Further, the driving mechanism has a relay switch electrically connected to the output end of the programmable controller 200.
The driving mechanism drives the sliding seat 600 to move forwards or backwards along the sliding groove 520 so as to move and monitor the temperature value of the cable terminal within a certain distance, realize the omnibearing detection of the temperature change of the cable terminal and improve the comprehensiveness and accuracy of the fault judgment of the cable terminal. And can realize the remote control to the sliding seat 600 through the monitoring terminal 300, realize the continuous inspection of timing or non-timing.
For example, the driving mechanism includes a driving wheel 610 and a driving controller, the driving wheel 610 is disposed in the sliding slot 520 and can roll in the sliding slot 520, the driving controller is connected to the driving wheel 610 for controlling the driving wheel 610 to roll forward or backward, and the driving controller is electrically connected to the relay switch. The reciprocating motion of the sliding seat 600 in the sliding groove 520 is realized by using the principle of driving a trolley, and the detection of the temperature of the cable terminal in the motion state is realized.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a cable termination trouble on-line monitoring device which characterized in that includes:
the cable temperature sensor is arranged on the cable near the cable terminal and used for detecting the operation temperature of the cable near the cable terminal;
the cable temperature sensor is electrically connected with the input end of the programmable controller; and
the monitoring terminal is in communication connection with the output end of the programmable controller and is provided with a display module for displaying a greenhouse value, a judgment module for judging whether a cable near the cable terminal is over-temperature or not and an alarm module for emitting a sound signal.
2. The cable termination fault on-line monitoring device of claim 1, wherein the cable temperature sensor is an infrared temperature sensor.
3. The cable termination fault on-line monitoring device of claim 1, wherein the number of the cable temperature sensors is at least two.
4. The cable termination fault on-line monitoring device of claim 1, further comprising a background temperature sensor for detecting an ambient background temperature, the background temperature sensor being disposed proximate the cable temperature sensor and spaced at least 30cm from the cable proximate the cable termination;
the background temperature sensor is electrically connected with the input end of the programmable controller.
5. The cable termination fault on-line monitoring device of claim 2, further comprising:
the cable groove is arranged around a cable of the cable terminal and used for laying the cable, a strip-shaped temperature measuring hole is formed in the cable groove, and sliding grooves are symmetrically formed in two sides of the cable groove; and
the sliding seat is connected in the sliding groove in a sliding mode and provided with a driving mechanism, the cable temperature sensor is fixedly installed on the sliding seat and can detect the cable temperature of the cable terminal through the temperature measuring hole.
6. The cable termination failure on-line monitoring device of claim 5, wherein the driving mechanism has a relay switch electrically connected to the output of the programmable controller.
7. The device for online monitoring of cable termination faults as claimed in claim 6, wherein the driving mechanism includes a driving wheel and a driving controller, the driving wheel is disposed in the chute and can roll in the chute, the driving controller is connected to the driving wheel for controlling the driving wheel to roll forward or backward, and the driving controller is electrically connected to the relay switch.
8. The cable termination fault on-line monitoring device of claim 1, wherein the programmable controller is one of Siemens S series programmable controllers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132128.8U CN210863893U (en) | 2019-07-18 | 2019-07-18 | Cable terminal fault on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132128.8U CN210863893U (en) | 2019-07-18 | 2019-07-18 | Cable terminal fault on-line monitoring device |
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| Publication Number | Publication Date |
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| CN210863893U true CN210863893U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921132128.8U Active CN210863893U (en) | 2019-07-18 | 2019-07-18 | Cable terminal fault on-line monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116067502A (en) * | 2023-03-06 | 2023-05-05 | 中建安装集团有限公司 | Single-core cable intermediate head temperature measurement analysis system and method based on PLC |
-
2019
- 2019-07-18 CN CN201921132128.8U patent/CN210863893U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116067502A (en) * | 2023-03-06 | 2023-05-05 | 中建安装集团有限公司 | Single-core cable intermediate head temperature measurement analysis system and method based on PLC |
| CN116067502B (en) * | 2023-03-06 | 2023-08-22 | 中建安装集团有限公司 | Single-core cable intermediate head temperature measurement analysis system and method based on PLC |
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