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Temperature sensing alarm device and cable joint

An alarm device and electrical connection technology, which is applied in the direction of measuring devices, electrical devices, thermometers, etc., can solve the problems of hard to find, timely maintenance, and real-time monitoring of cable interface heating, and achieve timely detection of heating problems. Effect

Pending Publication Date: 2021-04-13
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, it is difficult to monitor the temperature of the cable with a manual thermal imager, and it is not easy to find when the cable is just hot, especially when the interface of the cable is hot, it is more difficult to find, and it cannot be repaired in time

Method used

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  • Temperature sensing alarm device and cable joint
  • Temperature sensing alarm device and cable joint
  • Temperature sensing alarm device and cable joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] figure 1 It is a schematic structural diagram of a temperature-sensing alarm device provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of temperature-sensing alarms. See figure 1 , the temperature sensing alarm device includes: a thermistor 110 and an alarm module 120; the alarm module 120 includes an alarm unit 121 and a reset unit 122; , the resistance of the thermistor 110 is less than or equal to the preset resistance; the first end of the thermistor 110 is used to connect to the first power supply 310, and the second end of the thermistor 110 is electrically connected to the first end of the alarm unit 121 connection, the second end of the alarm unit 121 is used to input the second power supply 320, and the alarm unit 121 is used to send an alarm signal when the temperature of the tested object is equal to the preset temperature; the first end of the reset unit 122 is used to connect the first The power supply 310, th...

Embodiment 2

[0043] figure 2 It is a schematic structural diagram of a temperature-sensing alarm device provided in Embodiment 2 of the present invention. This embodiment is applicable to the situation of a temperature-sensing alarm. Optionally, see figure 2 , the thermistor 110 is a negative temperature coefficient thermistor.

[0044] Specifically, the resistance value of the thermistor 110 decreases as the temperature increases. When the temperature of the device under test is lower than the preset temperature, the temperature of the thermistor 110 is also lower than the preset temperature, and the resistance value of the thermistor 110 It is so large that the first power supply 310 cannot supply power to the alarm unit 121 through the thermistor 110, and the alarm unit 121 does not alarm. As the temperature of the tested object rises, the temperature of the thermistor 110 increases, and the resistance value of the thermistor 110 decreases. When the temperature of the tested object ris...

Embodiment 3

[0061] Image 6 For a structural sectional view of a cable joint provided in Embodiment 3 of the present invention, see Image 6 , the cable joint includes the temperature-sensing alarm device 10 of any of the above-mentioned embodiments, and further includes: a first tested part 210, a second tested part 220, and a wire lug 230; the temperature-sensing alarm device 10 is sleeved on the first end of the wire lug 230 ; The first DUT 210 is electrically connected to the first end of the wire ear 230 , and the second DUT 220 is electrically connected to the second end of the wire ear 230 .

[0062] Specifically, the first DUT 210 may be, for example, a cable, the cable is electrically connected to the first end of the wire lug 230 at the joint, the first end of the wire lug 230 is provided with a slot, and the first DUT 210 is set In the slot, so as to be electrically connected with the first end of the wire lug 230 . The second DUT 220 can be, for example, a cable, and the sec...

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PUM

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Abstract

The invention discloses a temperature sensing alarm device and a cable joint. The device comprises a thermistor and an alarm module, wherein the alarm module comprises an alarm unit and a reset unit; the thermistor is arranged on a measured piece in a sleeving manner, the temperature of the measured piece is equal to a preset temperature, and the resistance value of the thermistor is less than or equal to a preset resistance value; the first end of the thermistor is used for accessing a first power supply, the second end of the thermistor is electrically connected with the first end of the alarm unit, the second end of the alarm unit is used for inputting a second power supply, and the alarm unit is used for sending an alarm signal when the temperature of the measured piece is equal to the preset temperature; and the first end of the reset unit is used for accessing a first power supply, the second end of the reset unit is electrically connected with the second end of the alarm unit, and the reset unit is used for controlling the alarm unit to be in an open-circuit state when the alarm unit sends an alarm signal. The device achieves the effects of timely discovering a heating problem of the cable and timely maintaining the cable.

Description

technical field [0001] Embodiments of the present invention relate to high temperature alarm technology, in particular to a temperature sensing alarm device and a cable joint. Background technique [0002] With the continuous development of economy and society, people's demand for electricity is constantly increasing. When the cable cannot meet the demand for electricity, there will be an event of heating and burning out the equipment due to line overload. Therefore, it is necessary to monitor the temperature of the cable. [0003] The existing method for monitoring the temperature of cables is mainly to be monitored by staff through a thermal imager or a temperature sensor. [0004] However, it is difficult to monitor the temperature of the cable with a manual thermal imager, and it is not easy to detect when the cable is just hot, especially when the interface of the cable is hot, and it is difficult to achieve timely maintenance. Contents of the invention [0005] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K1/024G01K7/22
CPCG01K1/024G01K7/22
Inventor 卢沛忠王志伟吴旭辉叶沃力
Owner GUANGDONG POWER GRID CO LTD