Plug-in type multi-point power cable temperature-measuring device
A technology for power cables and temperature measuring devices, which is applied to measuring devices, thermometers using electrical devices, and thermometers with electrical/magnetic elements directly sensitive to heat, etc., to achieve the effects of reducing the number of use, simple structure and saving investment.
Inactive Publication Date: 2013-08-28
STATE GRID CORP OF CHINA +2
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Problems solved by technology
To use this method or device to detect the surface temperature of each power cable, a temperature sensor and a corresponding signal processing device must be installed on each cable, resulting in increased production costs. If there are several cables on a certain power line, several cables must be installed. sensors and signal transmission devices
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[0013] like figure 1 As shown, a plug-in multi-point power cable temperature measuring device has a temperature signal transmission line 6, one end of the temperature signal transmission line 6 is connected to the temperature measuring probe 7, and the other end is connected to the earphone plug; the temperature change signal on the temperature measuring probe 7 passes through the earphone plug Send it to the temperature measuring instrument 1. The temperature signal transmission line temperature measuring probe 7 is tightly attached to the power cable at one or more places of the power cable of the entire power transmission line by means of a snap ring or a binding method.
[0014] In the present embodiment, the temperature measuring probe 7 adopts a temperature sensor 18B20, and the earphone plug adopts a two-channel earphone plug structure, and the earphone plug is provided with a temperature sensor 18B20 power ground terminal 3, a temperature sensor 18B20 digital signal i...
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The invention discloses a plug-in type multi-point cable temperature-measuring device and relates to the technical field of cable temperature measurement. The device is provided with a temperature signal transmission line. A temperature-measuring probe is connected at one end of the temperature signal transmission line, and a headset plug is connected at the other end of the temperature signal transmission line. Temperature change signals on the temperature-measuring probe are transmitted to a temperature-measuring instrument through the headset plug. The plug-in type multi-point power cable temperature-measuring device has the advantages that only one temperature-measuring instrument needs to be installed, and a temperature sensor is installed at one position of parallel power cables through the temperature signal transmission line so that temperature changes of the power cables at the position can be convenient to measure; the structure is simple, the number of temperature-measuring instruments can be reduced, and investment is reduced.
Description
technical field [0001] The invention relates to the technical field of cable temperature measurement, in particular to a plug-in multi-point power cable temperature measurement device, which is used to detect the temperature change of the surface layer of a certain part of the power cable. Background technique [0002] The temperature measuring device usually used to detect the change of the surface temperature of a certain part of the power cable online is to install a temperature sensor on each power cable. The change is transmitted to the measuring instrument. To use this method or device to detect the surface temperature of each power cable, a temperature sensor and a corresponding signal processing device must be installed on each cable, resulting in increased production costs. If there are several cables on a certain power line, several cables must be installed. A sensor and a number of signal transmission devices. Contents of the invention [0003] In order to o...
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IPC IPC(8): G01K7/00
Inventor 周同梅范炜豪李颖陈烨刘波王巍张伟薛霜
Owner STATE GRID CORP OF CHINA