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Intelligent detection method and device for safety protection device

A safety protection device and intelligent detection technology, applied in the field of safety, can solve problems such as electrical accidents, failure to detect non-human faults of safety protection devices in time, etc., and achieve the effect of preventing the expansion of accidents and reducing the scope of influence of accidents.

Pending Publication Date: 2021-02-26
SHANXI QUANAN NEW TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the solution provided according to the embodiment of the present invention is that the non-human failure of the safety protection device or the failure of "throwing protection" caused by human violations of regulations can not be found in time, resulting in electrical accidents

Method used

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  • Intelligent detection method and device for safety protection device
  • Intelligent detection method and device for safety protection device
  • Intelligent detection method and device for safety protection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Figure 4 It is the principle diagram of the leakage protection action failure alarm power-off blocking circuit provided by the embodiment of the present invention, as shown in Figure 4 As shown, when the AC 660V line fails, the insulation resistance RJ decreases. When it decreases to a certain value, the leakage protection relay LJ operates, LJ1 is disconnected, and the contactor C is powered off. The normally open contact C1 of C is not disconnected due to the fault. The faulty line is not powered off, and the feed or start-stop sensor (15) installed on it outputs an electrical signal, and outputs i1 after being processed by the protected line voltage signal processing circuit (13), at this time i1 is high level (+ ), input to an input terminal of the signal comparison intelligent processor (9); the leakage protection relay LJ action, LJ2 closure, i2 is input to the other input terminal of the signal comparison intelligent processor (9), at this moment it is a high l...

Embodiment 2

[0082] Figure 5 It is the principle diagram of the overload protection action failure alarm power-off blocking circuit provided by the embodiment of the present invention, as shown in Figure 5As shown, after an overload fault occurs on the AC 660V line, the output current of the current conversion processing circuit increases, the overload action relay DJ operates with a delay, the normally closed node DJ1 is disconnected with a delay, and the contactor C is powered off. C1 is not disconnected for some reason, and the faulty line is not powered off. The feed or start-stop sensor (15) installed on it outputs an electrical signal, and outputs i1 after being processed by the protected line voltage signal processing circuit (13). At this time i1 is a high level (+), which is input to an input terminal of the signal comparison intelligent processor (9); the leakage protection relay LJ acts, and LJ2 is closed, and i2 is input to another input terminal of the signal comparison inte...

Embodiment 3

[0084] Figure 6 It is the principle diagram of the protection grounding fault alarm power failure blocking circuit provided by the embodiment of the present invention, as shown in Figure 6 As shown, referring to the principle and method of measuring the grounding resistance with the grounding meter, a grounding monitoring relay Jd is installed between the "earth" and the grounding line d. When the ground resistance R D After reaching a certain value, Jd is disconnected, the normally open contact Jd1 is closed, and i2 becomes high level (+). When the 660V AC line is energized, i1 is also high level (+), and the high level is set to 1. At this time u=i1*i2=1, through intelligent processing, the monitoring center (11) and the mobile internet terminal (10) report to the police and display, and when necessary, order the power contactor C to be powered off and locked.

[0085] When the actual power supply voltage in Embodiments 1 to 3 is a DC voltage, the voltage and current are...

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Abstract

The invention discloses an intelligent detection method and device for a safety protection device, and the method comprises the steps that a detection device obtains a state signal of a protected facility through the real-time monitoring of the working state of the protected facility; the detection device acquires an action signal of a safety protection device used for executing safety protectionoperation of the protected facility according to the state signal of the protected facility; the detection device performs logic processing on the state signal of the protected facility and the actionsignal of the safety protection device to judge whether the safety protection device breaks down or not; and when the detection device judges that the safety protection device breaks down, a power-off protection signal is generated and sent to a superior control device of the protected facility.

Description

technical field [0001] The invention relates to the field of safety technology, in particular to an intelligent detection method and device for a safety protection device. Background technique [0002] Underground coal mines and other industrial and civil power places, short-circuit leakage, grounding and other safety protection devices often fail to operate. The so-called "failure" refers to short-circuit, leakage , grounding and other safety protection devices do not play a protective role. If the power supply is not cut off, or the staff cannot be notified, etc., the impact time of the fault will be greatly increased, which will easily lead to electrical accidents, and even serious accidents in severe cases. Contents of the invention [0003] The technical problem solved by the solution provided according to the embodiment of the present invention is that an electrical accident is caused because a non-man-made failure of the safety protection device or a man-made failur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H1/00H02H3/00H02H3/04H02H3/10H02H5/00
CPCH02H1/0007H02H3/042H02H3/00H02H3/10H02H5/00
Inventor 郭春平
Owner SHANXI QUANAN NEW TECH DEV CO LTD
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