Safety interlock control device, system and method
A technology of safety interlocking and control device, applied in general control system, control/regulation system, program control, etc., can solve the problems of entering personnel safety threat, unable to reach safety protection personnel, warning sign pollution, damage or occlusion, etc.
Inactive Publication Date: 2020-07-14
PETROCHINA CO LTD
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Problems solved by technology
[0004] However, the inventors have found that the existing methods for controlling people's safe entry into these dangerous places have the following technical problems: because the warning signs may be polluted, damaged or blocked, causing the warning signs to fail, and the entrants directly enter the dangerous places; In order to omit the detection steps, the personnel enter directly because they think the place is safe based on experience; this will pose a serious threat to the safety of the personnel entering, and cannot achieve the purpose of protecting personnel safely.
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[0063] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0064] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0065] It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations...
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The invention provides a safety interlocking control device, system and method, and relates to the technical field of safety control, according to the invention, detection equipment collects the content of a preset number of harmful substances in a to-be-entered place, and transmits the content of the preset number of harmful substances to a controller; according to the content of the preset number of harmful substances, the average content of the harmful substances to enter the place is calculated; the controller judges whether the average content of the harmful substances exceeds a preset safety threshold value or not; if the average content of the harmful substances does not exceed the preset safety threshold value, a locking mechanism is controlled to be in a release state so as to enable the to-be-entered place to be in a normal in-out state, and if the average content of the harmful substances exceeds the preset safety threshold, the locking mechanism is controlled to close the entrance of the to-be-entered place, manual detection is not required and the safety of an entered person is fully protected.
Description
technical field [0001] The invention relates to the technical field of safety control, in particular to a safety interlock control device, system and method thereof. Background technique [0002] With the increase of population density, in some places where there are high concentrations of harmful substances and high-risk substances, collective accidents of mass casualties and casualties often occur. For example, in the process of drilling in oil fields, when drilling encounters sulfur dioxide formation, Leakage of poisonous sulfur dioxide gas will pose a serious threat to human life and health when the concentration of sulfur dioxide reaches 500ppm. For another example, during the cleaning and maintenance of reactors in chemical plants, people may need to enter the confined space. Because there may be harmful substances in the reactors, such as toxic gases, the inhalation of toxic gases can cause dizziness, nausea, vomiting, coma etc. Serious ones may be life-threatening, ...
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IPC IPC(8): G05B19/048
CPCG05B19/048
Inventor 张景山牛明勇梁林黄建敏袁川殷小勇孙凤枝
Owner PETROCHINA CO LTD